1Config(3pm) Perl Programmers Reference Guide Config(3pm)
2
3
4
6 Config - access Perl configuration information
7
9 use Config;
10 if ($Config{usethreads}) {
11 print "has thread support\n"
12 }
13
14 use Config qw(myconfig config_sh config_vars config_re);
15
16 print myconfig();
17
18 print config_sh();
19
20 print config_re();
21
22 config_vars(qw(osname archname));
23
25 The Config module contains all the information that was available to
26 the Configure program at Perl build time (over 900 values).
27
28 Shell variables from the config.sh file (written by Configure) are
29 stored in the readonly-variable %Config, indexed by their names.
30
31 Values stored in config.sh as 'undef' are returned as undefined values.
32 The perl "exists" function can be used to check if a named variable
33 exists.
34
35 For a description of the variables, please have a look at the Glossary
36 file, as written in the Porting folder, or use the url:
37 https://github.com/Perl/perl5/blob/blead/Porting/Glossary
38
39 myconfig()
40 Returns a textual summary of the major perl configuration values.
41 See also "-V" in "Command Switches" in perlrun.
42
43 config_sh()
44 Returns the entire perl configuration information in the form of
45 the original config.sh shell variable assignment script.
46
47 config_re($regex)
48 Like config_sh() but returns, as a list, only the config entries
49 who's names match the $regex.
50
51 config_vars(@names)
52 Prints to STDOUT the values of the named configuration variable.
53 Each is printed on a separate line in the form:
54
55 name='value';
56
57 Names which are unknown are output as "name='UNKNOWN';". See also
58 "-V:name" in "Command Switches" in perlrun.
59
60 bincompat_options()
61 Returns a list of C pre-processor options used when compiling this
62 perl binary, which affect its binary compatibility with extensions.
63 bincompat_options() and non_bincompat_options() are shown together
64 in the output of "perl -V" as Compile-time options.
65
66 non_bincompat_options()
67 Returns a list of C pre-processor options used when compiling this
68 perl binary, which do not affect binary compatibility with
69 extensions.
70
71 compile_date()
72 Returns the compile date (as a string), equivalent to what is shown
73 by "perl -V"
74
75 local_patches()
76 Returns a list of the names of locally applied patches, equivalent
77 to what is shown by "perl -V".
78
79 header_files()
80 Returns a list of the header files that should be used as
81 dependencies for XS code, for this version of Perl on this
82 platform.
83
85 Here's a more sophisticated example of using %Config:
86
87 use Config;
88 use strict;
89
90 my %sig_num;
91 my @sig_name;
92 unless($Config{sig_name} && $Config{sig_num}) {
93 die "No sigs?";
94 } else {
95 my @names = split ' ', $Config{sig_name};
96 @sig_num{@names} = split ' ', $Config{sig_num};
97 foreach (@names) {
98 $sig_name[$sig_num{$_}] ||= $_;
99 }
100 }
101
102 print "signal #17 = $sig_name[17]\n";
103 if ($sig_num{ALRM}) {
104 print "SIGALRM is $sig_num{ALRM}\n";
105 }
106
108 Because this information is not stored within the perl executable
109 itself it is possible (but unlikely) that the information does not
110 relate to the actual perl binary which is being used to access it.
111
112 The Config module is installed into the architecture and version
113 specific library directory ($Config{installarchlib}) and it checks the
114 perl version number when loaded.
115
116 The values stored in config.sh may be either single-quoted or double-
117 quoted. Double-quoted strings are handy for those cases where you need
118 to include escape sequences in the strings. To avoid runtime variable
119 interpolation, any "$" and "@" characters are replaced by "\$" and
120 "\@", respectively. This isn't foolproof, of course, so don't embed
121 "\$" or "\@" in double-quoted strings unless you're willing to deal
122 with the consequences. (The slashes will end up escaped and the "$" or
123 "@" will trigger variable interpolation)
124
126 Most "Config" variables are determined by the "Configure" script on
127 platforms supported by it (which is most UNIX platforms). Some
128 platforms have custom-made "Config" variables, and may thus not have
129 some of the variables described below, or may have extraneous variables
130 specific to that particular port. See the port specific documentation
131 in such cases.
132
133 P
134 "PERL_API_REVISION"
135 From patchlevel.h:
136
137 This number describes the earliest compatible "PERL_REVISION" of
138 Perl ("compatibility" here being defined as sufficient binary/"API"
139 compatibility to run "XS" code built with the older version).
140 Normally this does not change across maintenance releases. Please
141 read the comment in patchlevel.h.
142
143 "PERL_API_SUBVERSION"
144 From patchlevel.h:
145
146 This number describes the earliest compatible "PERL_SUBVERSION" of
147 Perl ("compatibility" here being defined as sufficient binary/"API"
148 compatibility to run "XS" code built with the older version).
149 Normally this does not change across maintenance releases. Please
150 read the comment in patchlevel.h.
151
152 "PERL_API_VERSION"
153 From patchlevel.h:
154
155 This number describes the earliest compatible "PERL_VERSION" of
156 Perl ("compatibility" here being defined as sufficient binary/"API"
157 compatibility to run "XS" code built with the older version).
158 Normally this does not change across maintenance releases. Please
159 read the comment in patchlevel.h.
160
161 "PERL_CONFIG_SH"
162 From Oldsyms.U:
163
164 This is set to "true" in config.sh so that a shell script sourcing
165 config.sh can tell if it has been sourced already.
166
167 "PERL_PATCHLEVEL"
168 From Oldsyms.U:
169
170 This symbol reflects the patchlevel, if available. Will usually
171 come from the .patch file, which is available when the perl source
172 tree was fetched with rsync.
173
174 "PERL_REVISION"
175 From Oldsyms.U:
176
177 In a Perl version number such as 5.6.2, this is the 5. This value
178 is manually set in patchlevel.h
179
180 "PERL_SUBVERSION"
181 From Oldsyms.U:
182
183 In a Perl version number such as 5.6.2, this is the 2. Values
184 greater than 50 represent potentially unstable development
185 subversions. This value is manually set in patchlevel.h
186
187 "PERL_VERSION"
188 From Oldsyms.U:
189
190 In a Perl version number such as 5.6.2, this is the 6. This value
191 is manually set in patchlevel.h
192
193 _
194 "_a"
195 From Unix.U:
196
197 This variable defines the extension used for ordinary library
198 files. For unix, it is .a. The . is included. Other possible
199 values include .lib.
200
201 "_exe"
202 From Unix.U:
203
204 This variable defines the extension used for executable files.
205 "DJGPP", Cygwin and OS/2 use .exe. Stratus "VOS" uses .pm. On
206 operating systems which do not require a specific extension for
207 executable files, this variable is empty.
208
209 "_o"
210 From Unix.U:
211
212 This variable defines the extension used for object files. For
213 unix, it is .o. The . is included. Other possible values include
214 .obj.
215
216 a
217 "afs"
218 From afs.U:
219
220 This variable is set to "true" if "AFS" (Andrew File System) is
221 used on the system, "false" otherwise. It is possible to override
222 this with a hint value or command line option, but you'd better
223 know what you are doing.
224
225 "afsroot"
226 From afs.U:
227
228 This variable is by default set to /afs. In the unlikely case this
229 is not the correct root, it is possible to override this with a
230 hint value or command line option. This will be used in subsequent
231 tests for AFSness in the configure and test process.
232
233 "alignbytes"
234 From alignbytes.U:
235
236 This variable holds the number of bytes required to align a
237 double-- or a long double when applicable. Usual values are 2, 4
238 and 8. The default is eight, for safety.
239
240 "aphostname"
241 From d_gethname.U:
242
243 This variable contains the command which can be used to compute the
244 host name. The command is fully qualified by its absolute path, to
245 make it safe when used by a process with super-user privileges.
246
247 "api_revision"
248 From patchlevel.U:
249
250 The three variables, api_revision, api_version, and api_subversion,
251 specify the version of the oldest perl binary compatible with the
252 present perl. In a full version string such as 5.6.1, api_revision
253 is the 5. Prior to 5.5.640, the format was a floating point
254 number, like 5.00563.
255
256 perl.c:incpush() and lib/lib.pm will automatically search in
257 $sitelib/.. for older directories back to the limit specified by
258 these api_ variables. This is only useful if you have a perl
259 library directory tree structured like the default one. See
260 "INSTALL" for how this works. The versioned site_perl directory
261 was introduced in 5.005, so that is the lowest possible value. The
262 version list appropriate for the current system is determined in
263 inc_version_list.U.
264
265 "XXX" To do: Since compatibility can depend on compile time
266 options (such as bincompat, longlong, etc.) it should (perhaps) be
267 set by Configure, but currently it isn't. Currently, we read a
268 hard-wired value from patchlevel.h. Perhaps what we ought to do is
269 take the hard-wired value from patchlevel.h but then modify it if
270 the current Configure options warrant. patchlevel.h then would use
271 an #ifdef guard.
272
273 "api_subversion"
274 From patchlevel.U:
275
276 The three variables, api_revision, api_version, and api_subversion,
277 specify the version of the oldest perl binary compatible with the
278 present perl. In a full version string such as 5.6.1,
279 api_subversion is the 1. See api_revision for full details.
280
281 "api_version"
282 From patchlevel.U:
283
284 The three variables, api_revision, api_version, and api_subversion,
285 specify the version of the oldest perl binary compatible with the
286 present perl. In a full version string such as 5.6.1, api_version
287 is the 6. See api_revision for full details. As a special case,
288 5.5.0 is rendered in the old-style as 5.005. (In the 5.005_0x
289 maintenance series, this was the only versioned directory in
290 $sitelib.)
291
292 "api_versionstring"
293 From patchlevel.U:
294
295 This variable combines api_revision, api_version, and
296 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable for
297 use as a directory name. This is filesystem dependent.
298
299 "ar"
300 From Loc.U:
301
302 This variable is used internally by Configure to determine the full
303 pathname (if any) of the ar program. After Configure runs, the
304 value is reset to a plain "ar" and is not useful.
305
306 "archlib"
307 From archlib.U:
308
309 This variable holds the name of the directory in which the user
310 wants to put architecture-dependent public library files for
311 $package. It is most often a local directory such as
312 /usr/local/lib. Programs using this variable must be prepared to
313 deal with filename expansion.
314
315 "archlibexp"
316 From archlib.U:
317
318 This variable is the same as the archlib variable, but is filename
319 expanded at configuration time, for convenient use.
320
321 "archname"
322 From archname.U:
323
324 This variable is a short name to characterize the current
325 architecture. It is used mainly to construct the default archlib.
326
327 "archname64"
328 From use64bits.U:
329
330 This variable is used for the 64-bitness part of $archname.
331
332 "archobjs"
333 From Unix.U:
334
335 This variable defines any additional objects that must be linked in
336 with the program on this architecture. On unix, it is usually
337 empty. It is typically used to include emulations of unix calls or
338 other facilities. For perl on OS/2, for example, this would
339 include os2/os2.obj.
340
341 "asctime_r_proto"
342 From d_asctime_r.U:
343
344 This variable encodes the prototype of asctime_r. It is zero if
345 d_asctime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
346 of reentr.h if d_asctime_r is defined.
347
348 "awk"
349 From Loc.U:
350
351 This variable is used internally by Configure to determine the full
352 pathname (if any) of the awk program. After Configure runs, the
353 value is reset to a plain "awk" and is not useful.
354
355 b
356 "baserev"
357 From baserev.U:
358
359 The base revision level of this package, from the .package file.
360
361 "bash"
362 From Loc.U:
363
364 This variable is defined but not used by Configure. The value is
365 the empty string and is not useful.
366
367 "bin"
368 From bin.U:
369
370 This variable holds the name of the directory in which the user
371 wants to put publicly executable images for the package in
372 question. It is most often a local directory such as
373 /usr/local/bin. Programs using this variable must be prepared to
374 deal with ~name substitution.
375
376 "bin_ELF"
377 From dlsrc.U:
378
379 This variable saves the result from configure if generated binaries
380 are in "ELF" format. Only set to defined when the test has actually
381 been performed, and the result was positive.
382
383 "binexp"
384 From bin.U:
385
386 This is the same as the bin variable, but is filename expanded at
387 configuration time, for use in your makefiles.
388
389 "bison"
390 From Loc.U:
391
392 This variable is used internally by Configure to determine the full
393 pathname (if any) of the bison program. After Configure runs, the
394 value is reset to a plain "bison" and is not useful.
395
396 "byacc"
397 From Loc.U:
398
399 This variable is used internally by Configure to determine the full
400 pathname (if any) of the byacc program. After Configure runs, the
401 value is reset to a plain "byacc" and is not useful.
402
403 "byteorder"
404 From byteorder.U:
405
406 This variable holds the byte order in a "UV". In the following,
407 larger digits indicate more significance. The variable byteorder
408 is either 4321 on a big-endian machine, or 1234 on a little-endian,
409 or 87654321 on a Cray ... or 3412 with weird order !
410
411 c
412 "c" From n.U:
413
414 This variable contains the \c string if that is what causes the
415 echo command to suppress newline. Otherwise it is null. Correct
416 usage is $echo $n "prompt for a question: $c".
417
418 "castflags"
419 From d_castneg.U:
420
421 This variable contains a flag that precise difficulties the
422 compiler has casting odd floating values to unsigned long: 0 = ok 1
423 = couldn't cast < 0 2 = couldn't cast >= 0x80000000 4 = couldn't
424 cast in argument expression list
425
426 "cat"
427 From Loc.U:
428
429 This variable is used internally by Configure to determine the full
430 pathname (if any) of the cat program. After Configure runs, the
431 value is reset to a plain "cat" and is not useful.
432
433 "cc"
434 From cc.U:
435
436 This variable holds the name of a command to execute a C compiler
437 which can resolve multiple global references that happen to have
438 the same name. Usual values are "cc" and "gcc". Fervent "ANSI"
439 compilers may be called "c89". "AIX" has xlc.
440
441 "cccdlflags"
442 From dlsrc.U:
443
444 This variable contains any special flags that might need to be
445 passed with "cc -c" to compile modules to be used to create a
446 shared library that will be used for dynamic loading. For hpux,
447 this should be +z. It is up to the makefile to use it.
448
449 "ccdlflags"
450 From dlsrc.U:
451
452 This variable contains any special flags that might need to be
453 passed to cc to link with a shared library for dynamic loading. It
454 is up to the makefile to use it. For sunos 4.1, it should be
455 empty.
456
457 "ccflags"
458 From ccflags.U:
459
460 This variable contains any additional C compiler flags desired by
461 the user. It is up to the Makefile to use this.
462
463 "ccflags_uselargefiles"
464 From uselfs.U:
465
466 This variable contains the compiler flags needed by large file
467 builds and added to ccflags by hints files.
468
469 "ccname"
470 From Checkcc.U:
471
472 This can set either by hints files or by Configure. If using gcc,
473 this is gcc, and if not, usually equal to cc, unimpressive, no?
474 Some platforms, however, make good use of this by storing the
475 flavor of the C compiler being used here. For example if using the
476 Sun WorkShop suite, ccname will be "workshop".
477
478 "ccsymbols"
479 From Cppsym.U:
480
481 The variable contains the symbols defined by the C compiler alone.
482 The symbols defined by cpp or by cc when it calls cpp are not in
483 this list, see cppsymbols and cppccsymbols. The list is a space-
484 separated list of symbol=value tokens.
485
486 "ccversion"
487 From Checkcc.U:
488
489 This can set either by hints files or by Configure. If using a
490 (non-gcc) vendor cc, this variable may contain a version for the
491 compiler.
492
493 "cf_by"
494 From cf_who.U:
495
496 Login name of the person who ran the Configure script and answered
497 the questions. This is used to tag both config.sh and config_h.SH.
498
499 "cf_email"
500 From cf_email.U:
501
502 Electronic mail address of the person who ran Configure. This can
503 be used by units that require the user's e-mail, like MailList.U.
504
505 "cf_time"
506 From cf_who.U:
507
508 Holds the output of the "date" command when the configuration file
509 was produced. This is used to tag both config.sh and config_h.SH.
510
511 "charbits"
512 From charsize.U:
513
514 This variable contains the value of the "CHARBITS" symbol, which
515 indicates to the C program how many bits there are in a character.
516
517 "charsize"
518 From charsize.U:
519
520 This variable contains the value of the "CHARSIZE" symbol, which
521 indicates to the C program how many bytes there are in a character.
522
523 "chgrp"
524 From Loc.U:
525
526 This variable is defined but not used by Configure. The value is
527 the empty string and is not useful.
528
529 "chmod"
530 From Loc.U:
531
532 This variable is used internally by Configure to determine the full
533 pathname (if any) of the chmod program. After Configure runs, the
534 value is reset to a plain "chmod" and is not useful.
535
536 "chown"
537 From Loc.U:
538
539 This variable is defined but not used by Configure. The value is
540 the empty string and is not useful.
541
542 "clocktype"
543 From d_times.U:
544
545 This variable holds the type returned by times(). It can be long,
546 or clock_t on "BSD" sites (in which case <sys/types.h> should be
547 included).
548
549 "comm"
550 From Loc.U:
551
552 This variable is used internally by Configure to determine the full
553 pathname (if any) of the comm program. After Configure runs, the
554 value is reset to a plain "comm" and is not useful.
555
556 "compiler_warning"
557 From compiler_warning.U:
558
559 This variable holds the command to check if the file specified as a
560 parameter contains a compiler warning
561
562 "compress"
563 From Loc.U:
564
565 This variable is defined but not used by Configure. The value is
566 the empty string and is not useful.
567
568 "config_arg0"
569 From Options.U:
570
571 This variable contains the string used to invoke the Configure
572 command, as reported by the shell in the $0 variable.
573
574 "config_argc"
575 From Options.U:
576
577 This variable contains the number of command-line arguments passed
578 to Configure, as reported by the shell in the $# variable. The
579 individual arguments are stored as variables config_arg1,
580 config_arg2, etc.
581
582 "config_args"
583 From Options.U:
584
585 This variable contains a single string giving the command-line
586 arguments passed to Configure. Spaces within arguments, quotes, and
587 escaped characters are not correctly preserved. To reconstruct the
588 command line, you must assemble the individual command line pieces,
589 given in config_arg[0-9]*.
590
591 "contains"
592 From contains.U:
593
594 This variable holds the command to do a grep with a proper return
595 status. On most sane systems it is simply "grep". On insane
596 systems it is a grep followed by a cat followed by a test. This
597 variable is primarily for the use of other Configure units.
598
599 "cp"
600 From Loc.U:
601
602 This variable is used internally by Configure to determine the full
603 pathname (if any) of the cp program. After Configure runs, the
604 value is reset to a plain "cp" and is not useful.
605
606 "cpio"
607 From Loc.U:
608
609 This variable is defined but not used by Configure. The value is
610 the empty string and is not useful.
611
612 "cpp"
613 From Loc.U:
614
615 This variable is used internally by Configure to determine the full
616 pathname (if any) of the cpp program. After Configure runs, the
617 value is reset to a plain "cpp" and is not useful.
618
619 "cpp_stuff"
620 From cpp_stuff.U:
621
622 This variable contains an identification of the concatenation
623 mechanism used by the C preprocessor.
624
625 "cppccsymbols"
626 From Cppsym.U:
627
628 The variable contains the symbols defined by the C compiler when it
629 calls cpp. The symbols defined by the cc alone or cpp alone are
630 not in this list, see ccsymbols and cppsymbols. The list is a
631 space-separated list of symbol=value tokens.
632
633 "cppflags"
634 From ccflags.U:
635
636 This variable holds the flags that will be passed to the C pre-
637 processor. It is up to the Makefile to use it.
638
639 "cpplast"
640 From cppstdin.U:
641
642 This variable has the same functionality as cppminus, only it
643 applies to cpprun and not cppstdin.
644
645 "cppminus"
646 From cppstdin.U:
647
648 This variable contains the second part of the string which will
649 invoke the C preprocessor on the standard input and produce to
650 standard output. This variable will have the value "-" if cppstdin
651 needs a minus to specify standard input, otherwise the value is "".
652
653 "cpprun"
654 From cppstdin.U:
655
656 This variable contains the command which will invoke a C
657 preprocessor on standard input and put the output to stdout. It is
658 guaranteed not to be a wrapper and may be a null string if no
659 preprocessor can be made directly available. This preprocessor
660 might be different from the one used by the C compiler. Don't
661 forget to append cpplast after the preprocessor options.
662
663 "cppstdin"
664 From cppstdin.U:
665
666 This variable contains the command which will invoke the C
667 preprocessor on standard input and put the output to stdout. It is
668 primarily used by other Configure units that ask about preprocessor
669 symbols.
670
671 "cppsymbols"
672 From Cppsym.U:
673
674 The variable contains the symbols defined by the C preprocessor
675 alone. The symbols defined by cc or by cc when it calls cpp are
676 not in this list, see ccsymbols and cppccsymbols. The list is a
677 space-separated list of symbol=value tokens.
678
679 "crypt_r_proto"
680 From d_crypt_r.U:
681
682 This variable encodes the prototype of crypt_r. It is zero if
683 d_crypt_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
684 of reentr.h if d_crypt_r is defined.
685
686 "cryptlib"
687 From d_crypt.U:
688
689 This variable holds -lcrypt or the path to a libcrypt.a archive if
690 the crypt() function is not defined in the standard C library. It
691 is up to the Makefile to use this.
692
693 "csh"
694 From Loc.U:
695
696 This variable is used internally by Configure to determine the full
697 pathname (if any) of the csh program. After Configure runs, the
698 value is reset to a plain "csh" and is not useful.
699
700 "ctermid_r_proto"
701 From d_ctermid_r.U:
702
703 This variable encodes the prototype of ctermid_r. It is zero if
704 d_ctermid_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
705 of reentr.h if d_ctermid_r is defined.
706
707 "ctime_r_proto"
708 From d_ctime_r.U:
709
710 This variable encodes the prototype of ctime_r. It is zero if
711 d_ctime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
712 of reentr.h if d_ctime_r is defined.
713
714 d
715 "d_Gconvert"
716 From d_gconvert.U:
717
718 This variable holds what Gconvert is defined as to convert floating
719 point numbers into strings. By default, Configure sets "this"
720 macro to use the first of gconvert, gcvt, or sprintf that pass
721 sprintf-%g-like behavior tests. If perl is using long doubles, the
722 macro uses the first of the following functions that pass
723 Configure's tests: qgcvt, sprintf (if Configure knows how to make
724 sprintf format long doubles--see sPRIgldbl), gconvert, gcvt, and
725 sprintf (casting to double). The gconvert_preference and
726 gconvert_ld_preference variables can be used to alter Configure's
727 preferences, for doubles and long doubles, respectively. If
728 present, they contain a space-separated list of one or more of the
729 above function names in the order they should be tried.
730
731 d_Gconvert may be set to override Configure with a platform-
732 specific function. If this function expects a double, a different
733 value may need to be set by the uselongdouble.cbu call-back unit so
734 that long doubles can be formatted without loss of precision.
735
736 "d_PRIEUldbl"
737 From longdblfio.U:
738
739 This variable conditionally defines the PERL_PRIfldbl symbol, which
740 indicates that stdio has a symbol to print long doubles. The "U"
741 in the name is to separate this from d_PRIeldbl so that even case-
742 blind systems can see the difference.
743
744 "d_PRIFUldbl"
745 From longdblfio.U:
746
747 This variable conditionally defines the PERL_PRIfldbl symbol, which
748 indicates that stdio has a symbol to print long doubles. The "U"
749 in the name is to separate this from d_PRIfldbl so that even case-
750 blind systems can see the difference.
751
752 "d_PRIGUldbl"
753 From longdblfio.U:
754
755 This variable conditionally defines the PERL_PRIfldbl symbol, which
756 indicates that stdio has a symbol to print long doubles. The "U"
757 in the name is to separate this from d_PRIgldbl so that even case-
758 blind systems can see the difference.
759
760 "d_PRIXU64"
761 From quadfio.U:
762
763 This variable conditionally defines the PERL_PRIXU64 symbol, which
764 indicates that stdio has a symbol to print 64-bit hExADECimAl
765 numbers. The "U" in the name is to separate this from d_PRIx64 so
766 that even case-blind systems can see the difference.
767
768 "d_PRId64"
769 From quadfio.U:
770
771 This variable conditionally defines the PERL_PRId64 symbol, which
772 indicates that stdio has a symbol to print 64-bit decimal numbers.
773
774 "d_PRIeldbl"
775 From longdblfio.U:
776
777 This variable conditionally defines the PERL_PRIfldbl symbol, which
778 indicates that stdio has a symbol to print long doubles.
779
780 "d_PRIfldbl"
781 From longdblfio.U:
782
783 This variable conditionally defines the PERL_PRIfldbl symbol, which
784 indicates that stdio has a symbol to print long doubles.
785
786 "d_PRIgldbl"
787 From longdblfio.U:
788
789 This variable conditionally defines the PERL_PRIfldbl symbol, which
790 indicates that stdio has a symbol to print long doubles.
791
792 "d_PRIi64"
793 From quadfio.U:
794
795 This variable conditionally defines the PERL_PRIi64 symbol, which
796 indicates that stdio has a symbol to print 64-bit decimal numbers.
797
798 "d_PRIo64"
799 From quadfio.U:
800
801 This variable conditionally defines the PERL_PRIo64 symbol, which
802 indicates that stdio has a symbol to print 64-bit octal numbers.
803
804 "d_PRIu64"
805 From quadfio.U:
806
807 This variable conditionally defines the PERL_PRIu64 symbol, which
808 indicates that stdio has a symbol to print 64-bit unsigned decimal
809 numbers.
810
811 "d_PRIx64"
812 From quadfio.U:
813
814 This variable conditionally defines the PERL_PRIx64 symbol, which
815 indicates that stdio has a symbol to print 64-bit hexadecimal
816 numbers.
817
818 "d_SCNfldbl"
819 From longdblfio.U:
820
821 This variable conditionally defines the PERL_PRIfldbl symbol, which
822 indicates that stdio has a symbol to scan long doubles.
823
824 "d__fwalk"
825 From d__fwalk.U:
826
827 This variable conditionally defines "HAS__FWALK" if _fwalk() is
828 available to apply a function to all the file handles.
829
830 "d_accept4"
831 From d_accept4.U:
832
833 This variable conditionally defines HAS_ACCEPT4 if accept4() is
834 available to accept socket connections.
835
836 "d_access"
837 From d_access.U:
838
839 This variable conditionally defines "HAS_ACCESS" if the access()
840 system call is available to check for access permissions using real
841 IDs.
842
843 "d_accessx"
844 From d_accessx.U:
845
846 This variable conditionally defines the "HAS_ACCESSX" symbol, which
847 indicates to the C program that the accessx() routine is available.
848
849 "d_acosh"
850 From d_acosh.U:
851
852 This variable conditionally defines the "HAS_ACOSH" symbol, which
853 indicates to the C program that the acosh() routine is available.
854
855 "d_aintl"
856 From d_aintl.U:
857
858 This variable conditionally defines the "HAS_AINTL" symbol, which
859 indicates to the C program that the aintl() routine is available.
860 If copysignl is also present we can emulate modfl.
861
862 "d_alarm"
863 From d_alarm.U:
864
865 This variable conditionally defines the "HAS_ALARM" symbol, which
866 indicates to the C program that the alarm() routine is available.
867
868 "d_archlib"
869 From archlib.U:
870
871 This variable conditionally defines "ARCHLIB" to hold the pathname
872 of architecture-dependent library files for $package. If $archlib
873 is the same as $privlib, then this is set to undef.
874
875 "d_asctime64"
876 From d_timefuncs64.U:
877
878 This variable conditionally defines the HAS_ASCTIME64 symbol, which
879 indicates to the C program that the asctime64 () routine is
880 available.
881
882 "d_asctime_r"
883 From d_asctime_r.U:
884
885 This variable conditionally defines the "HAS_ASCTIME_R" symbol,
886 which indicates to the C program that the asctime_r() routine is
887 available.
888
889 "d_asinh"
890 From d_asinh.U:
891
892 This variable conditionally defines the "HAS_ASINH" symbol, which
893 indicates to the C program that the asinh() routine is available.
894
895 "d_atanh"
896 From d_atanh.U:
897
898 This variable conditionally defines the "HAS_ATANH" symbol, which
899 indicates to the C program that the atanh() routine is available.
900
901 "d_atolf"
902 From atolf.U:
903
904 This variable conditionally defines the "HAS_ATOLF" symbol, which
905 indicates to the C program that the atolf() routine is available.
906
907 "d_atoll"
908 From atoll.U:
909
910 This variable conditionally defines the "HAS_ATOLL" symbol, which
911 indicates to the C program that the atoll() routine is available.
912
913 "d_attribute_always_inline"
914 From d_attribut.U:
915
916 This variable conditionally defines "HASATTRIBUTE_ALWAYS_INLINE",
917 which indicates that the C compiler can know that certain functions
918 should always be inlined.
919
920 "d_attribute_deprecated"
921 From d_attribut.U:
922
923 This variable conditionally defines "HASATTRIBUTE_DEPRECATED",
924 which indicates that "GCC" can handle the attribute for marking
925 deprecated APIs
926
927 "d_attribute_format"
928 From d_attribut.U:
929
930 This variable conditionally defines "HASATTRIBUTE_FORMAT", which
931 indicates the C compiler can check for printf-like formats.
932
933 "d_attribute_malloc"
934 From d_attribut.U:
935
936 This variable conditionally defines "HASATTRIBUTE_MALLOC", which
937 indicates the C compiler can understand functions as having malloc-
938 like semantics.
939
940 "d_attribute_nonnull"
941 From d_attribut.U:
942
943 This variable conditionally defines "HASATTRIBUTE_NONNULL", which
944 indicates that the C compiler can know that certain arguments must
945 not be "NULL", and will check accordingly at compile time.
946
947 "d_attribute_noreturn"
948 From d_attribut.U:
949
950 This variable conditionally defines "HASATTRIBUTE_NORETURN", which
951 indicates that the C compiler can know that certain functions are
952 guaranteed never to return.
953
954 "d_attribute_pure"
955 From d_attribut.U:
956
957 This variable conditionally defines "HASATTRIBUTE_PURE", which
958 indicates that the C compiler can know that certain functions are
959 "pure" functions, meaning that they have no side effects, and only
960 rely on function input and/or global data for their results.
961
962 "d_attribute_unused"
963 From d_attribut.U:
964
965 This variable conditionally defines "HASATTRIBUTE_UNUSED", which
966 indicates that the C compiler can know that certain variables and
967 arguments may not always be used, and to not throw warnings if they
968 don't get used.
969
970 "d_attribute_visibility"
971 From d_attribut.U:
972
973 This variable conditionally defines the "HASATTRIBUTE_VISIBILITY"
974 symbol, and indicates different "GCC" attribute visibility
975
976 "d_attribute_warn_unused_result"
977 From d_attribut.U:
978
979 This variable conditionally defines
980 "HASATTRIBUTE_WARN_UNUSED_RESULT", which indicates that the C
981 compiler can know that certain functions have a return values that
982 must not be ignored, such as malloc() or open().
983
984 "d_backtrace"
985 From d_backtrace.U:
986
987 This variable conditionally defines the "HAS_BACKTRACE" symbol,
988 which indicates to the C program that the backtrace() routine is
989 available to get a stack trace.
990
991 "d_bsd"
992 From Guess.U:
993
994 This symbol conditionally defines the symbol "BSD" when running on
995 a "BSD" system.
996
997 "d_bsdgetpgrp"
998 From d_getpgrp.U:
999
1000 This variable conditionally defines "USE_BSD_GETPGRP" if getpgrp
1001 needs one arguments whereas "USG" one needs none.
1002
1003 "d_bsdsetpgrp"
1004 From d_setpgrp.U:
1005
1006 This variable conditionally defines "USE_BSD_SETPGRP" if setpgrp
1007 needs two arguments whereas "USG" one needs none. See also
1008 d_setpgid for a "POSIX" interface.
1009
1010 "d_builtin_add_overflow"
1011 From d_builtin_overflow.U:
1012
1013 This variable conditionally defines "HAS_BUILTIN_ADD_OVERFLOW",
1014 which indicates that the compiler supports
1015 __builtin_add_overflow(x,y,&z) for safely adding x and y into z
1016 while checking for overflow.
1017
1018 "d_builtin_choose_expr"
1019 From d_builtin.U:
1020
1021 This conditionally defines "HAS_BUILTIN_CHOOSE_EXPR", which
1022 indicates that the compiler supports __builtin_choose_expr(x,y,z).
1023 This built-in function is analogous to the "x?y:z" operator in C,
1024 except that the expression returned has its type unaltered by
1025 promotion rules. Also, the built-in function does not evaluate the
1026 expression that was not chosen.
1027
1028 "d_builtin_expect"
1029 From d_builtin.U:
1030
1031 This conditionally defines "HAS_BUILTIN_EXPECT", which indicates
1032 that the compiler supports __builtin_expect(exp,c). You may use
1033 __builtin_expect to provide the compiler with branch prediction
1034 information.
1035
1036 "d_builtin_mul_overflow"
1037 From d_builtin_overflow.U:
1038
1039 This variable conditionally defines "HAS_BUILTIN_MUL_OVERFLOW",
1040 which indicates that the compiler supports
1041 __builtin_mul_overflow(x,y,&z) for safely multiplying x and y into
1042 z while checking for overflow.
1043
1044 "d_builtin_sub_overflow"
1045 From d_builtin_overflow.U:
1046
1047 This variable conditionally defines "HAS_BUILTIN_SUB_OVERFLOW",
1048 which indicates that the compiler supports
1049 __builtin_sub_overflow(x,y,&z) for safely subtracting y from x into
1050 z while checking for overflow.
1051
1052 "d_c99_variadic_macros"
1053 From d_c99_variadic.U:
1054
1055 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
1056 symbol, which indicates to the C program that C99 variadic macros
1057 are available.
1058
1059 "d_casti32"
1060 From d_casti32.U:
1061
1062 This variable conditionally defines CASTI32, which indicates
1063 whether the C compiler can cast large floats to 32-bit ints.
1064
1065 "d_castneg"
1066 From d_castneg.U:
1067
1068 This variable conditionally defines "CASTNEG", which indicates
1069 whether the C compiler can cast negative float to unsigned.
1070
1071 "d_cbrt"
1072 From d_cbrt.U:
1073
1074 This variable conditionally defines the "HAS_CBRT" symbol, which
1075 indicates to the C program that the cbrt() (cube root) function is
1076 available.
1077
1078 "d_chown"
1079 From d_chown.U:
1080
1081 This variable conditionally defines the "HAS_CHOWN" symbol, which
1082 indicates to the C program that the chown() routine is available.
1083
1084 "d_chroot"
1085 From d_chroot.U:
1086
1087 This variable conditionally defines the "HAS_CHROOT" symbol, which
1088 indicates to the C program that the chroot() routine is available.
1089
1090 "d_chsize"
1091 From d_chsize.U:
1092
1093 This variable conditionally defines the "CHSIZE" symbol, which
1094 indicates to the C program that the chsize() routine is available
1095 to truncate files. You might need a -lx to get this routine.
1096
1097 "d_class"
1098 From d_class.U:
1099
1100 This variable conditionally defines the "HAS_CLASS" symbol, which
1101 indicates to the C program that the class() routine is available.
1102
1103 "d_clearenv"
1104 From d_clearenv.U:
1105
1106 This variable conditionally defines the "HAS_CLEARENV" symbol,
1107 which indicates to the C program that the clearenv () routine is
1108 available.
1109
1110 "d_closedir"
1111 From d_closedir.U:
1112
1113 This variable conditionally defines "HAS_CLOSEDIR" if closedir() is
1114 available.
1115
1116 "d_cmsghdr_s"
1117 From d_cmsghdr_s.U:
1118
1119 This variable conditionally defines the "HAS_STRUCT_CMSGHDR"
1120 symbol, which indicates that the struct cmsghdr is supported.
1121
1122 "d_copysign"
1123 From d_copysign.U:
1124
1125 This variable conditionally defines the "HAS_COPYSIGN" symbol,
1126 which indicates to the C program that the copysign() routine is
1127 available.
1128
1129 "d_copysignl"
1130 From d_copysignl.U:
1131
1132 This variable conditionally defines the "HAS_COPYSIGNL" symbol,
1133 which indicates to the C program that the copysignl() routine is
1134 available. If aintl is also present we can emulate modfl.
1135
1136 "d_cplusplus"
1137 From d_cplusplus.U:
1138
1139 This variable conditionally defines the "USE_CPLUSPLUS" symbol,
1140 which indicates that a C++ compiler was used to compiled Perl and
1141 will be used to compile extensions.
1142
1143 "d_crypt"
1144 From d_crypt.U:
1145
1146 This variable conditionally defines the "CRYPT" symbol, which
1147 indicates to the C program that the crypt() routine is available to
1148 encrypt passwords and the like.
1149
1150 "d_crypt_r"
1151 From d_crypt_r.U:
1152
1153 This variable conditionally defines the "HAS_CRYPT_R" symbol, which
1154 indicates to the C program that the crypt_r() routine is available.
1155
1156 "d_csh"
1157 From d_csh.U:
1158
1159 This variable conditionally defines the "CSH" symbol, which
1160 indicates to the C program that the C-shell exists.
1161
1162 "d_ctermid"
1163 From d_ctermid.U:
1164
1165 This variable conditionally defines "CTERMID" if ctermid() is
1166 available to generate filename for terminal.
1167
1168 "d_ctermid_r"
1169 From d_ctermid_r.U:
1170
1171 This variable conditionally defines the "HAS_CTERMID_R" symbol,
1172 which indicates to the C program that the ctermid_r() routine is
1173 available.
1174
1175 "d_ctime64"
1176 From d_timefuncs64.U:
1177
1178 This variable conditionally defines the HAS_CTIME64 symbol, which
1179 indicates to the C program that the ctime64 () routine is
1180 available.
1181
1182 "d_ctime_r"
1183 From d_ctime_r.U:
1184
1185 This variable conditionally defines the "HAS_CTIME_R" symbol, which
1186 indicates to the C program that the ctime_r() routine is available.
1187
1188 "d_cuserid"
1189 From d_cuserid.U:
1190
1191 This variable conditionally defines the "HAS_CUSERID" symbol, which
1192 indicates to the C program that the cuserid() routine is available
1193 to get character login names.
1194
1195 "d_dbminitproto"
1196 From d_dbminitproto.U:
1197
1198 This variable conditionally defines the "HAS_DBMINIT_PROTO" symbol,
1199 which indicates to the C program that the system provides a
1200 prototype for the dbminit() function. Otherwise, it is up to the
1201 program to supply one.
1202
1203 "d_difftime"
1204 From d_difftime.U:
1205
1206 This variable conditionally defines the "HAS_DIFFTIME" symbol,
1207 which indicates to the C program that the difftime() routine is
1208 available.
1209
1210 "d_difftime64"
1211 From d_timefuncs64.U:
1212
1213 This variable conditionally defines the HAS_DIFFTIME64 symbol,
1214 which indicates to the C program that the difftime64 () routine is
1215 available.
1216
1217 "d_dir_dd_fd"
1218 From d_dir_dd_fd.U:
1219
1220 This variable conditionally defines the "HAS_DIR_DD_FD" symbol,
1221 which indicates that the "DIR" directory stream type contains a
1222 member variable called dd_fd.
1223
1224 "d_dirfd"
1225 From d_dirfd.U:
1226
1227 This variable conditionally defines the "HAS_DIRFD" constant, which
1228 indicates to the C program that dirfd() is available to return the
1229 file descriptor of a directory stream.
1230
1231 "d_dirnamlen"
1232 From i_dirent.U:
1233
1234 This variable conditionally defines "DIRNAMLEN", which indicates to
1235 the C program that the length of directory entry names is provided
1236 by a d_namelen field.
1237
1238 "d_dladdr"
1239 From d_dladdr.U:
1240
1241 This variable conditionally defines the "HAS_DLADDR" symbol, which
1242 indicates to the C program that the dladdr() routine is available
1243 to get a stack trace.
1244
1245 "d_dlerror"
1246 From d_dlerror.U:
1247
1248 This variable conditionally defines the "HAS_DLERROR" symbol, which
1249 indicates to the C program that the dlerror() routine is available.
1250
1251 "d_dlopen"
1252 From d_dlopen.U:
1253
1254 This variable conditionally defines the "HAS_DLOPEN" symbol, which
1255 indicates to the C program that the dlopen() routine is available.
1256
1257 "d_dlsymun"
1258 From d_dlsymun.U:
1259
1260 This variable conditionally defines "DLSYM_NEEDS_UNDERSCORE", which
1261 indicates that we need to prepend an underscore to the symbol name
1262 before calling dlsym().
1263
1264 "d_dosuid"
1265 From d_dosuid.U:
1266
1267 This variable conditionally defines the symbol "DOSUID", which
1268 tells the C program that it should insert setuid emulation code on
1269 hosts which have setuid #! scripts disabled.
1270
1271 "d_double_has_inf"
1272 From longdblfio.U:
1273
1274 This variable conditionally defines the symbol "DOUBLE_HAS_INF"
1275 which indicates that the double type has an infinity.
1276
1277 "d_double_has_nan"
1278 From longdblfio.U:
1279
1280 This variable conditionally defines the symbol "DOUBLE_HAS_NAN"
1281 which indicates that the double type has a not-a-number.
1282
1283 "d_double_has_negative_zero"
1284 From longdblfio.U:
1285
1286 This variable conditionally defines the symbol
1287 "DOUBLE_HAS_NEGATIVE_ZERO" which indicates that the double type has
1288 a negative zero.
1289
1290 "d_double_has_subnormals"
1291 From longdblfio.U:
1292
1293 This variable conditionally defines the symbol
1294 "DOUBLE_HAS_SUBNORMALS" which indicates that the double type has
1295 subnormals (denormals).
1296
1297 "d_double_style_cray"
1298 From longdblfio.U:
1299
1300 This variable conditionally defines the symbol "DOUBLE_STYLE_CRAY"
1301 which indicates that the double is the 64-bit "CRAY" mainframe
1302 format.
1303
1304 "d_double_style_ibm"
1305 From longdblfio.U:
1306
1307 This variable conditionally defines the symbol "DOUBLE_STYLE_IBM",
1308 which indicates that the double is the 64-bit "IBM" mainframe
1309 format.
1310
1311 "d_double_style_ieee"
1312 From longdblfio.U:
1313
1314 This variable conditionally defines the symbol "DOUBLE_STYLE_IEEE",
1315 which indicates that the double is the 64-bit "IEEE" 754.
1316
1317 "d_double_style_vax"
1318 From longdblfio.U:
1319
1320 This variable conditionally defines the symbol "DOUBLE_STYLE_VAX",
1321 which indicates that the double is the 64-bit "VAX" format D or G.
1322
1323 "d_drand48_r"
1324 From d_drand48_r.U:
1325
1326 This variable conditionally defines the HAS_DRAND48_R symbol, which
1327 indicates to the C program that the drand48_r() routine is
1328 available.
1329
1330 "d_drand48proto"
1331 From d_drand48proto.U:
1332
1333 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
1334 which indicates to the C program that the system provides a
1335 prototype for the drand48() function. Otherwise, it is up to the
1336 program to supply one.
1337
1338 "d_dup2"
1339 From d_dup2.U:
1340
1341 This variable conditionally defines HAS_DUP2 if dup2() is available
1342 to duplicate file descriptors.
1343
1344 "d_dup3"
1345 From d_dup3.U:
1346
1347 This variable conditionally defines HAS_DUP3 if dup3() is available
1348 to duplicate file descriptors.
1349
1350 "d_duplocale"
1351 From d_newlocale.U:
1352
1353 This variable conditionally defines the "HAS_DUPLOCALE" symbol,
1354 which indicates to the C program that the duplocale() routine is
1355 available to duplicate a locale object.
1356
1357 "d_eaccess"
1358 From d_eaccess.U:
1359
1360 This variable conditionally defines the "HAS_EACCESS" symbol, which
1361 indicates to the C program that the eaccess() routine is available.
1362
1363 "d_endgrent"
1364 From d_endgrent.U:
1365
1366 This variable conditionally defines the "HAS_ENDGRENT" symbol,
1367 which indicates to the C program that the endgrent() routine is
1368 available for sequential access of the group database.
1369
1370 "d_endgrent_r"
1371 From d_endgrent_r.U:
1372
1373 This variable conditionally defines the "HAS_ENDGRENT_R" symbol,
1374 which indicates to the C program that the endgrent_r() routine is
1375 available.
1376
1377 "d_endhent"
1378 From d_endhent.U:
1379
1380 This variable conditionally defines "HAS_ENDHOSTENT" if
1381 endhostent() is available to close whatever was being used for host
1382 queries.
1383
1384 "d_endhostent_r"
1385 From d_endhostent_r.U:
1386
1387 This variable conditionally defines the "HAS_ENDHOSTENT_R" symbol,
1388 which indicates to the C program that the endhostent_r() routine is
1389 available.
1390
1391 "d_endnent"
1392 From d_endnent.U:
1393
1394 This variable conditionally defines "HAS_ENDNETENT" if endnetent()
1395 is available to close whatever was being used for network queries.
1396
1397 "d_endnetent_r"
1398 From d_endnetent_r.U:
1399
1400 This variable conditionally defines the "HAS_ENDNETENT_R" symbol,
1401 which indicates to the C program that the endnetent_r() routine is
1402 available.
1403
1404 "d_endpent"
1405 From d_endpent.U:
1406
1407 This variable conditionally defines "HAS_ENDPROTOENT" if
1408 endprotoent() is available to close whatever was being used for
1409 protocol queries.
1410
1411 "d_endprotoent_r"
1412 From d_endprotoent_r.U:
1413
1414 This variable conditionally defines the "HAS_ENDPROTOENT_R" symbol,
1415 which indicates to the C program that the endprotoent_r() routine
1416 is available.
1417
1418 "d_endpwent"
1419 From d_endpwent.U:
1420
1421 This variable conditionally defines the "HAS_ENDPWENT" symbol,
1422 which indicates to the C program that the endpwent() routine is
1423 available for sequential access of the passwd database.
1424
1425 "d_endpwent_r"
1426 From d_endpwent_r.U:
1427
1428 This variable conditionally defines the "HAS_ENDPWENT_R" symbol,
1429 which indicates to the C program that the endpwent_r() routine is
1430 available.
1431
1432 "d_endsent"
1433 From d_endsent.U:
1434
1435 This variable conditionally defines "HAS_ENDSERVENT" if
1436 endservent() is available to close whatever was being used for
1437 service queries.
1438
1439 "d_endservent_r"
1440 From d_endservent_r.U:
1441
1442 This variable conditionally defines the "HAS_ENDSERVENT_R" symbol,
1443 which indicates to the C program that the endservent_r() routine is
1444 available.
1445
1446 "d_eofnblk"
1447 From nblock_io.U:
1448
1449 This variable conditionally defines "EOF_NONBLOCK" if "EOF" can be
1450 seen when reading from a non-blocking I/O source.
1451
1452 "d_erf"
1453 From d_erf.U:
1454
1455 This variable conditionally defines the "HAS_ERF" symbol, which
1456 indicates to the C program that the erf() routine is available.
1457
1458 "d_erfc"
1459 From d_erfc.U:
1460
1461 This variable conditionally defines the "HAS_ERFC" symbol, which
1462 indicates to the C program that the erfc() routine is available.
1463
1464 "d_eunice"
1465 From Guess.U:
1466
1467 This variable conditionally defines the symbols "EUNICE" and "VAX",
1468 which alerts the C program that it must deal with idiosyncrasies of
1469 "VMS".
1470
1471 "d_exp2"
1472 From d_exp2.U:
1473
1474 This variable conditionally defines the HAS_EXP2 symbol, which
1475 indicates to the C program that the exp2() routine is available.
1476
1477 "d_expm1"
1478 From d_expm1.U:
1479
1480 This variable conditionally defines the HAS_EXPM1 symbol, which
1481 indicates to the C program that the expm1() routine is available.
1482
1483 "d_faststdio"
1484 From d_faststdio.U:
1485
1486 This variable conditionally defines the "HAS_FAST_STDIO" symbol,
1487 which indicates to the C program that the "fast stdio" is available
1488 to manipulate the stdio buffers directly.
1489
1490 "d_fchdir"
1491 From d_fchdir.U:
1492
1493 This variable conditionally defines the "HAS_FCHDIR" symbol, which
1494 indicates to the C program that the fchdir() routine is available.
1495
1496 "d_fchmod"
1497 From d_fchmod.U:
1498
1499 This variable conditionally defines the "HAS_FCHMOD" symbol, which
1500 indicates to the C program that the fchmod() routine is available
1501 to change mode of opened files.
1502
1503 "d_fchmodat"
1504 From d_fsat.U:
1505
1506 This variable conditionally defines the "HAS_FCHMODAT" symbol,
1507 which indicates the "POSIX" fchmodat() function is available.
1508
1509 "d_fchown"
1510 From d_fchown.U:
1511
1512 This variable conditionally defines the "HAS_FCHOWN" symbol, which
1513 indicates to the C program that the fchown() routine is available
1514 to change ownership of opened files.
1515
1516 "d_fcntl"
1517 From d_fcntl.U:
1518
1519 This variable conditionally defines the "HAS_FCNTL" symbol, and
1520 indicates whether the fcntl() function exists
1521
1522 "d_fcntl_can_lock"
1523 From d_fcntl_can_lock.U:
1524
1525 This variable conditionally defines the "FCNTL_CAN_LOCK" symbol and
1526 indicates whether file locking with fcntl() works.
1527
1528 "d_fd_macros"
1529 From d_fd_set.U:
1530
1531 This variable contains the eventual value of the "HAS_FD_MACROS"
1532 symbol, which indicates if your C compiler knows about the macros
1533 which manipulate an fd_set.
1534
1535 "d_fd_set"
1536 From d_fd_set.U:
1537
1538 This variable contains the eventual value of the "HAS_FD_SET"
1539 symbol, which indicates if your C compiler knows about the fd_set
1540 typedef.
1541
1542 "d_fdclose"
1543 From d_fdclose.U:
1544
1545 This variable conditionally defines the "HAS_FDCLOSE" symbol, which
1546 indicates to the C program that the fdclose() routine is available.
1547
1548 "d_fdim"
1549 From d_fdim.U:
1550
1551 This variable conditionally defines the "HAS_FDIM" symbol, which
1552 indicates to the C program that the fdim() routine is available.
1553
1554 "d_fds_bits"
1555 From d_fd_set.U:
1556
1557 This variable contains the eventual value of the "HAS_FDS_BITS"
1558 symbol, which indicates if your fd_set typedef contains the
1559 fds_bits member. If you have an fd_set typedef, but the dweebs who
1560 installed it did a half-fast job and neglected to provide the
1561 macros to manipulate an fd_set, "HAS_FDS_BITS" will let us know how
1562 to fix the gaffe.
1563
1564 "d_fegetround"
1565 From d_fegetround.U:
1566
1567 This variable conditionally defines "HAS_FEGETROUND" if
1568 fegetround() is available to get the floating point rounding mode.
1569
1570 "d_ffs"
1571 From d_ffs.U:
1572
1573 This variable conditionally defines the "HAS_FFS" symbol, which
1574 indicates to the C program that the ffs() routine is available to
1575 find the first bit which is set in its integer argument.
1576
1577 "d_ffsl"
1578 From d_ffs.U:
1579
1580 This variable conditionally defines the "HAS_FFSL" symbol, which
1581 indicates to the C program that the ffsl() routine is available to
1582 find the first bit which is set in its long integer argument.
1583
1584 "d_fgetpos"
1585 From d_fgetpos.U:
1586
1587 This variable conditionally defines "HAS_FGETPOS" if fgetpos() is
1588 available to get the file position indicator.
1589
1590 "d_finite"
1591 From d_finite.U:
1592
1593 This variable conditionally defines the "HAS_FINITE" symbol, which
1594 indicates to the C program that the finite() routine is available.
1595
1596 "d_finitel"
1597 From d_finitel.U:
1598
1599 This variable conditionally defines the "HAS_FINITEL" symbol, which
1600 indicates to the C program that the finitel() routine is available.
1601
1602 "d_flexfnam"
1603 From d_flexfnam.U:
1604
1605 This variable conditionally defines the "FLEXFILENAMES" symbol,
1606 which indicates that the system supports filenames longer than 14
1607 characters.
1608
1609 "d_flock"
1610 From d_flock.U:
1611
1612 This variable conditionally defines "HAS_FLOCK" if flock() is
1613 available to do file locking.
1614
1615 "d_flockproto"
1616 From d_flockproto.U:
1617
1618 This variable conditionally defines the "HAS_FLOCK_PROTO" symbol,
1619 which indicates to the C program that the system provides a
1620 prototype for the flock() function. Otherwise, it is up to the
1621 program to supply one.
1622
1623 "d_fma"
1624 From d_fma.U:
1625
1626 This variable conditionally defines the "HAS_FMA" symbol, which
1627 indicates to the C program that the fma() routine is available.
1628
1629 "d_fmax"
1630 From d_fmax.U:
1631
1632 This variable conditionally defines the "HAS_FMAX" symbol, which
1633 indicates to the C program that the fmax() routine is available.
1634
1635 "d_fmin"
1636 From d_fmin.U:
1637
1638 This variable conditionally defines the "HAS_FMIN" symbol, which
1639 indicates to the C program that the fmin() routine is available.
1640
1641 "d_fork"
1642 From d_fork.U:
1643
1644 This variable conditionally defines the "HAS_FORK" symbol, which
1645 indicates to the C program that the fork() routine is available.
1646
1647 "d_fp_class"
1648 From d_fp_class.U:
1649
1650 This variable conditionally defines the "HAS_FP_CLASS" symbol,
1651 which indicates to the C program that the fp_class() routine is
1652 available.
1653
1654 "d_fp_classify"
1655 From d_fpclassify.U:
1656
1657 This variable conditionally defines the "HAS_FP_CLASSIFY" symbol,
1658 which indicates to the C program that the fp_classify() routine is
1659 available.
1660
1661 "d_fp_classl"
1662 From d_fp_classl.U:
1663
1664 This variable conditionally defines the "HAS_FP_CLASSL" symbol,
1665 which indicates to the C program that the fp_classl() routine is
1666 available.
1667
1668 "d_fpathconf"
1669 From d_pathconf.U:
1670
1671 This variable conditionally defines the "HAS_FPATHCONF" symbol,
1672 which indicates to the C program that the pathconf() routine is
1673 available to determine file-system related limits and options
1674 associated with a given open file descriptor.
1675
1676 "d_fpclass"
1677 From d_fpclass.U:
1678
1679 This variable conditionally defines the "HAS_FPCLASS" symbol, which
1680 indicates to the C program that the fpclass() routine is available.
1681
1682 "d_fpclassify"
1683 From d_fpclassify.U:
1684
1685 This variable conditionally defines the "HAS_FPCLASSIFY" symbol,
1686 which indicates to the C program that the fpclassify() routine is
1687 available.
1688
1689 "d_fpclassl"
1690 From d_fpclassl.U:
1691
1692 This variable conditionally defines the "HAS_FPCLASSL" symbol,
1693 which indicates to the C program that the fpclassl() routine is
1694 available.
1695
1696 "d_fpgetround"
1697 From d_fpgetround.U:
1698
1699 This variable conditionally defines "HAS_FPGETROUND" if
1700 fpgetround() is available to get the floating point rounding mode.
1701
1702 "d_fpos64_t"
1703 From d_fpos64_t.U:
1704
1705 This symbol will be defined if the C compiler supports fpos64_t.
1706
1707 "d_freelocale"
1708 From d_newlocale.U:
1709
1710 This variable conditionally defines the "HAS_FREELOCALE" symbol,
1711 which indicates to the C program that the freelocale() routine is
1712 available to deallocates the resources associated with a locale
1713 object.
1714
1715 "d_frexpl"
1716 From d_frexpl.U:
1717
1718 This variable conditionally defines the "HAS_FREXPL" symbol, which
1719 indicates to the C program that the frexpl() routine is available.
1720
1721 "d_fs_data_s"
1722 From d_fs_data_s.U:
1723
1724 This variable conditionally defines the "HAS_STRUCT_FS_DATA"
1725 symbol, which indicates that the struct fs_data is supported.
1726
1727 "d_fseeko"
1728 From d_fseeko.U:
1729
1730 This variable conditionally defines the "HAS_FSEEKO" symbol, which
1731 indicates to the C program that the fseeko() routine is available.
1732
1733 "d_fsetpos"
1734 From d_fsetpos.U:
1735
1736 This variable conditionally defines "HAS_FSETPOS" if fsetpos() is
1737 available to set the file position indicator.
1738
1739 "d_fstatfs"
1740 From d_fstatfs.U:
1741
1742 This variable conditionally defines the "HAS_FSTATFS" symbol, which
1743 indicates to the C program that the fstatfs() routine is available.
1744
1745 "d_fstatvfs"
1746 From d_statvfs.U:
1747
1748 This variable conditionally defines the "HAS_FSTATVFS" symbol,
1749 which indicates to the C program that the fstatvfs() routine is
1750 available.
1751
1752 "d_fsync"
1753 From d_fsync.U:
1754
1755 This variable conditionally defines the "HAS_FSYNC" symbol, which
1756 indicates to the C program that the fsync() routine is available.
1757
1758 "d_ftello"
1759 From d_ftello.U:
1760
1761 This variable conditionally defines the "HAS_FTELLO" symbol, which
1762 indicates to the C program that the ftello() routine is available.
1763
1764 "d_ftime"
1765 From d_ftime.U:
1766
1767 This variable conditionally defines the "HAS_FTIME" symbol, which
1768 indicates that the ftime() routine exists. The ftime() routine is
1769 basically a sub-second accuracy clock.
1770
1771 "d_futimes"
1772 From d_futimes.U:
1773
1774 This variable conditionally defines the "HAS_FUTIMES" symbol, which
1775 indicates to the C program that the futimes() routine is available.
1776
1777 "d_gai_strerror"
1778 From d_gai_strerror.U:
1779
1780 This variable conditionally defines the "HAS_GAI_STRERROR" symbol
1781 if the gai_strerror() routine is available and can be used to
1782 translate error codes returned by getaddrinfo() into human readable
1783 strings.
1784
1785 "d_gdbm_ndbm_h_uses_prototypes"
1786 From i_ndbm.U:
1787
1788 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
1789 symbol, which indicates that the gdbm-ndbm.h include file uses real
1790 "ANSI" C prototypes instead of K&R style function declarations. K&R
1791 style declarations are unsupported in C++, so the include file
1792 requires special handling when using a C++ compiler and this
1793 variable is undefined. Consult the different
1794 d_*ndbm_h_uses_prototypes variables to get the same information for
1795 alternative ndbm.h include files.
1796
1797 "d_gdbmndbm_h_uses_prototypes"
1798 From i_ndbm.U:
1799
1800 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
1801 symbol, which indicates that the gdbm/ndbm.h include file uses real
1802 "ANSI" C prototypes instead of K&R style function declarations. K&R
1803 style declarations are unsupported in C++, so the include file
1804 requires special handling when using a C++ compiler and this
1805 variable is undefined. Consult the different
1806 d_*ndbm_h_uses_prototypes variables to get the same information for
1807 alternative ndbm.h include files.
1808
1809 "d_getaddrinfo"
1810 From d_getaddrinfo.U:
1811
1812 This variable conditionally defines the "HAS_GETADDRINFO" symbol,
1813 which indicates to the C program that the getaddrinfo() function is
1814 available.
1815
1816 "d_getcwd"
1817 From d_getcwd.U:
1818
1819 This variable conditionally defines the "HAS_GETCWD" symbol, which
1820 indicates to the C program that the getcwd() routine is available
1821 to get the current working directory.
1822
1823 "d_getenv_preserves_other_thread"
1824 From d_getenv_thread.U:
1825
1826 This variable conditionally defines the
1827 "GETENV_PRESERVES_OTHER_THREAD" symbol, which indicates to the C
1828 program that the getenv() system call does not zap the static
1829 buffer in a different thread.
1830
1831 "d_getespwnam"
1832 From d_getespwnam.U:
1833
1834 This variable conditionally defines "HAS_GETESPWNAM" if
1835 getespwnam() is available to retrieve enhanced (shadow) password
1836 entries by name.
1837
1838 "d_getfsstat"
1839 From d_getfsstat.U:
1840
1841 This variable conditionally defines the "HAS_GETFSSTAT" symbol,
1842 which indicates to the C program that the getfsstat() routine is
1843 available.
1844
1845 "d_getgrent"
1846 From d_getgrent.U:
1847
1848 This variable conditionally defines the "HAS_GETGRENT" symbol,
1849 which indicates to the C program that the getgrent() routine is
1850 available for sequential access of the group database.
1851
1852 "d_getgrent_r"
1853 From d_getgrent_r.U:
1854
1855 This variable conditionally defines the "HAS_GETGRENT_R" symbol,
1856 which indicates to the C program that the getgrent_r() routine is
1857 available.
1858
1859 "d_getgrgid_r"
1860 From d_getgrgid_r.U:
1861
1862 This variable conditionally defines the "HAS_GETGRGID_R" symbol,
1863 which indicates to the C program that the getgrgid_r() routine is
1864 available.
1865
1866 "d_getgrnam_r"
1867 From d_getgrnam_r.U:
1868
1869 This variable conditionally defines the "HAS_GETGRNAM_R" symbol,
1870 which indicates to the C program that the getgrnam_r() routine is
1871 available.
1872
1873 "d_getgrps"
1874 From d_getgrps.U:
1875
1876 This variable conditionally defines the "HAS_GETGROUPS" symbol,
1877 which indicates to the C program that the getgroups() routine is
1878 available to get the list of process groups.
1879
1880 "d_gethbyaddr"
1881 From d_gethbyad.U:
1882
1883 This variable conditionally defines the "HAS_GETHOSTBYADDR" symbol,
1884 which indicates to the C program that the gethostbyaddr() routine
1885 is available to look up hosts by their "IP" addresses.
1886
1887 "d_gethbyname"
1888 From d_gethbynm.U:
1889
1890 This variable conditionally defines the "HAS_GETHOSTBYNAME" symbol,
1891 which indicates to the C program that the gethostbyname() routine
1892 is available to look up host names in some data base or other.
1893
1894 "d_gethent"
1895 From d_gethent.U:
1896
1897 This variable conditionally defines "HAS_GETHOSTENT" if
1898 gethostent() is available to look up host names in some data base
1899 or another.
1900
1901 "d_gethname"
1902 From d_gethname.U:
1903
1904 This variable conditionally defines the "HAS_GETHOSTNAME" symbol,
1905 which indicates to the C program that the gethostname() routine may
1906 be used to derive the host name.
1907
1908 "d_gethostbyaddr_r"
1909 From d_gethostbyaddr_r.U:
1910
1911 This variable conditionally defines the "HAS_GETHOSTBYADDR_R"
1912 symbol, which indicates to the C program that the gethostbyaddr_r()
1913 routine is available.
1914
1915 "d_gethostbyname_r"
1916 From d_gethostbyname_r.U:
1917
1918 This variable conditionally defines the "HAS_GETHOSTBYNAME_R"
1919 symbol, which indicates to the C program that the gethostbyname_r()
1920 routine is available.
1921
1922 "d_gethostent_r"
1923 From d_gethostent_r.U:
1924
1925 This variable conditionally defines the "HAS_GETHOSTENT_R" symbol,
1926 which indicates to the C program that the gethostent_r() routine is
1927 available.
1928
1929 "d_gethostprotos"
1930 From d_gethostprotos.U:
1931
1932 This variable conditionally defines the "HAS_GETHOST_PROTOS"
1933 symbol, which indicates to the C program that <netdb.h> supplies
1934 prototypes for the various gethost*() functions. See also
1935 netdbtype.U for probing for various netdb types.
1936
1937 "d_getitimer"
1938 From d_getitimer.U:
1939
1940 This variable conditionally defines the "HAS_GETITIMER" symbol,
1941 which indicates to the C program that the getitimer() routine is
1942 available.
1943
1944 "d_getlogin"
1945 From d_getlogin.U:
1946
1947 This variable conditionally defines the "HAS_GETLOGIN" symbol,
1948 which indicates to the C program that the getlogin() routine is
1949 available to get the login name.
1950
1951 "d_getlogin_r"
1952 From d_getlogin_r.U:
1953
1954 This variable conditionally defines the "HAS_GETLOGIN_R" symbol,
1955 which indicates to the C program that the getlogin_r() routine is
1956 available.
1957
1958 "d_getmnt"
1959 From d_getmnt.U:
1960
1961 This variable conditionally defines the "HAS_GETMNT" symbol, which
1962 indicates to the C program that the getmnt() routine is available
1963 to retrieve one or more mount info blocks by filename.
1964
1965 "d_getmntent"
1966 From d_getmntent.U:
1967
1968 This variable conditionally defines the "HAS_GETMNTENT" symbol,
1969 which indicates to the C program that the getmntent() routine is
1970 available to iterate through mounted files to get their mount info.
1971
1972 "d_getnameinfo"
1973 From d_getnameinfo.U:
1974
1975 This variable conditionally defines the "HAS_GETNAMEINFO" symbol,
1976 which indicates to the C program that the getnameinfo() function is
1977 available.
1978
1979 "d_getnbyaddr"
1980 From d_getnbyad.U:
1981
1982 This variable conditionally defines the "HAS_GETNETBYADDR" symbol,
1983 which indicates to the C program that the getnetbyaddr() routine is
1984 available to look up networks by their "IP" addresses.
1985
1986 "d_getnbyname"
1987 From d_getnbynm.U:
1988
1989 This variable conditionally defines the "HAS_GETNETBYNAME" symbol,
1990 which indicates to the C program that the getnetbyname() routine is
1991 available to look up networks by their names.
1992
1993 "d_getnent"
1994 From d_getnent.U:
1995
1996 This variable conditionally defines "HAS_GETNETENT" if getnetent()
1997 is available to look up network names in some data base or another.
1998
1999 "d_getnetbyaddr_r"
2000 From d_getnetbyaddr_r.U:
2001
2002 This variable conditionally defines the "HAS_GETNETBYADDR_R"
2003 symbol, which indicates to the C program that the getnetbyaddr_r()
2004 routine is available.
2005
2006 "d_getnetbyname_r"
2007 From d_getnetbyname_r.U:
2008
2009 This variable conditionally defines the "HAS_GETNETBYNAME_R"
2010 symbol, which indicates to the C program that the getnetbyname_r()
2011 routine is available.
2012
2013 "d_getnetent_r"
2014 From d_getnetent_r.U:
2015
2016 This variable conditionally defines the "HAS_GETNETENT_R" symbol,
2017 which indicates to the C program that the getnetent_r() routine is
2018 available.
2019
2020 "d_getnetprotos"
2021 From d_getnetprotos.U:
2022
2023 This variable conditionally defines the "HAS_GETNET_PROTOS" symbol,
2024 which indicates to the C program that <netdb.h> supplies prototypes
2025 for the various getnet*() functions. See also netdbtype.U for
2026 probing for various netdb types.
2027
2028 "d_getpagsz"
2029 From d_getpagsz.U:
2030
2031 This variable conditionally defines "HAS_GETPAGESIZE" if
2032 getpagesize() is available to get the system page size.
2033
2034 "d_getpbyname"
2035 From d_getprotby.U:
2036
2037 This variable conditionally defines the "HAS_GETPROTOBYNAME"
2038 symbol, which indicates to the C program that the getprotobyname()
2039 routine is available to look up protocols by their name.
2040
2041 "d_getpbynumber"
2042 From d_getprotby.U:
2043
2044 This variable conditionally defines the "HAS_GETPROTOBYNUMBER"
2045 symbol, which indicates to the C program that the
2046 getprotobynumber() routine is available to look up protocols by
2047 their number.
2048
2049 "d_getpent"
2050 From d_getpent.U:
2051
2052 This variable conditionally defines "HAS_GETPROTOENT" if
2053 getprotoent() is available to look up protocols in some data base
2054 or another.
2055
2056 "d_getpgid"
2057 From d_getpgid.U:
2058
2059 This variable conditionally defines the "HAS_GETPGID" symbol, which
2060 indicates to the C program that the getpgid(pid) function is
2061 available to get the process group id.
2062
2063 "d_getpgrp"
2064 From d_getpgrp.U:
2065
2066 This variable conditionally defines "HAS_GETPGRP" if getpgrp() is
2067 available to get the current process group.
2068
2069 "d_getpgrp2"
2070 From d_getpgrp2.U:
2071
2072 This variable conditionally defines the HAS_GETPGRP2 symbol, which
2073 indicates to the C program that the getpgrp2() (as in DG/"UX")
2074 routine is available to get the current process group.
2075
2076 "d_getppid"
2077 From d_getppid.U:
2078
2079 This variable conditionally defines the "HAS_GETPPID" symbol, which
2080 indicates to the C program that the getppid() routine is available
2081 to get the parent process "ID".
2082
2083 "d_getprior"
2084 From d_getprior.U:
2085
2086 This variable conditionally defines "HAS_GETPRIORITY" if
2087 getpriority() is available to get a process's priority.
2088
2089 "d_getprotobyname_r"
2090 From d_getprotobyname_r.U:
2091
2092 This variable conditionally defines the "HAS_GETPROTOBYNAME_R"
2093 symbol, which indicates to the C program that the
2094 getprotobyname_r() routine is available.
2095
2096 "d_getprotobynumber_r"
2097 From d_getprotobynumber_r.U:
2098
2099 This variable conditionally defines the "HAS_GETPROTOBYNUMBER_R"
2100 symbol, which indicates to the C program that the
2101 getprotobynumber_r() routine is available.
2102
2103 "d_getprotoent_r"
2104 From d_getprotoent_r.U:
2105
2106 This variable conditionally defines the "HAS_GETPROTOENT_R" symbol,
2107 which indicates to the C program that the getprotoent_r() routine
2108 is available.
2109
2110 "d_getprotoprotos"
2111 From d_getprotoprotos.U:
2112
2113 This variable conditionally defines the "HAS_GETPROTO_PROTOS"
2114 symbol, which indicates to the C program that <netdb.h> supplies
2115 prototypes for the various getproto*() functions. See also
2116 netdbtype.U for probing for various netdb types.
2117
2118 "d_getprpwnam"
2119 From d_getprpwnam.U:
2120
2121 This variable conditionally defines "HAS_GETPRPWNAM" if
2122 getprpwnam() is available to retrieve protected (shadow) password
2123 entries by name.
2124
2125 "d_getpwent"
2126 From d_getpwent.U:
2127
2128 This variable conditionally defines the "HAS_GETPWENT" symbol,
2129 which indicates to the C program that the getpwent() routine is
2130 available for sequential access of the passwd database.
2131
2132 "d_getpwent_r"
2133 From d_getpwent_r.U:
2134
2135 This variable conditionally defines the "HAS_GETPWENT_R" symbol,
2136 which indicates to the C program that the getpwent_r() routine is
2137 available.
2138
2139 "d_getpwnam_r"
2140 From d_getpwnam_r.U:
2141
2142 This variable conditionally defines the "HAS_GETPWNAM_R" symbol,
2143 which indicates to the C program that the getpwnam_r() routine is
2144 available.
2145
2146 "d_getpwuid_r"
2147 From d_getpwuid_r.U:
2148
2149 This variable conditionally defines the "HAS_GETPWUID_R" symbol,
2150 which indicates to the C program that the getpwuid_r() routine is
2151 available.
2152
2153 "d_getsbyname"
2154 From d_getsrvby.U:
2155
2156 This variable conditionally defines the "HAS_GETSERVBYNAME" symbol,
2157 which indicates to the C program that the getservbyname() routine
2158 is available to look up services by their name.
2159
2160 "d_getsbyport"
2161 From d_getsrvby.U:
2162
2163 This variable conditionally defines the "HAS_GETSERVBYPORT" symbol,
2164 which indicates to the C program that the getservbyport() routine
2165 is available to look up services by their port.
2166
2167 "d_getsent"
2168 From d_getsent.U:
2169
2170 This variable conditionally defines "HAS_GETSERVENT" if
2171 getservent() is available to look up network services in some data
2172 base or another.
2173
2174 "d_getservbyname_r"
2175 From d_getservbyname_r.U:
2176
2177 This variable conditionally defines the "HAS_GETSERVBYNAME_R"
2178 symbol, which indicates to the C program that the getservbyname_r()
2179 routine is available.
2180
2181 "d_getservbyport_r"
2182 From d_getservbyport_r.U:
2183
2184 This variable conditionally defines the "HAS_GETSERVBYPORT_R"
2185 symbol, which indicates to the C program that the getservbyport_r()
2186 routine is available.
2187
2188 "d_getservent_r"
2189 From d_getservent_r.U:
2190
2191 This variable conditionally defines the "HAS_GETSERVENT_R" symbol,
2192 which indicates to the C program that the getservent_r() routine is
2193 available.
2194
2195 "d_getservprotos"
2196 From d_getservprotos.U:
2197
2198 This variable conditionally defines the "HAS_GETSERV_PROTOS"
2199 symbol, which indicates to the C program that <netdb.h> supplies
2200 prototypes for the various getserv*() functions. See also
2201 netdbtype.U for probing for various netdb types.
2202
2203 "d_getspnam"
2204 From d_getspnam.U:
2205
2206 This variable conditionally defines "HAS_GETSPNAM" if getspnam() is
2207 available to retrieve SysV shadow password entries by name.
2208
2209 "d_getspnam_r"
2210 From d_getspnam_r.U:
2211
2212 This variable conditionally defines the "HAS_GETSPNAM_R" symbol,
2213 which indicates to the C program that the getspnam_r() routine is
2214 available.
2215
2216 "d_gettimeod"
2217 From d_ftime.U:
2218
2219 This variable conditionally defines the "HAS_GETTIMEOFDAY" symbol,
2220 which indicates that the gettimeofday() system call exists (to
2221 obtain a sub-second accuracy clock). You should probably include
2222 <sys/resource.h>.
2223
2224 "d_gmtime64"
2225 From d_timefuncs64.U:
2226
2227 This variable conditionally defines the HAS_GMTIME64 symbol, which
2228 indicates to the C program that the gmtime64 () routine is
2229 available.
2230
2231 "d_gmtime_r"
2232 From d_gmtime_r.U:
2233
2234 This variable conditionally defines the "HAS_GMTIME_R" symbol,
2235 which indicates to the C program that the gmtime_r() routine is
2236 available.
2237
2238 "d_gnulibc"
2239 From d_gnulibc.U:
2240
2241 Defined if we're dealing with the "GNU" C Library.
2242
2243 "d_grpasswd"
2244 From i_grp.U:
2245
2246 This variable conditionally defines "GRPASSWD", which indicates
2247 that struct group in <grp.h> contains gr_passwd.
2248
2249 "d_has_C_UTF8"
2250 From d_setlocale.U:
2251
2252 This variable is set to either "true" or "false" depending on
2253 whether the compilation system supports the C.UTF-8 locale.
2254
2255 "d_hasmntopt"
2256 From d_hasmntopt.U:
2257
2258 This variable conditionally defines the "HAS_HASMNTOPT" symbol,
2259 which indicates to the C program that the hasmntopt() routine is
2260 available to query the mount options of file systems.
2261
2262 "d_htonl"
2263 From d_htonl.U:
2264
2265 This variable conditionally defines "HAS_HTONL" if htonl() and its
2266 friends are available to do network order byte swapping.
2267
2268 "d_hypot"
2269 From d_hypot.U:
2270
2271 This variable conditionally defines "HAS_HYPOT" if hypot is
2272 available for numerically stable hypotenuse function.
2273
2274 "d_ilogb"
2275 From d_ilogb.U:
2276
2277 This variable conditionally defines the "HAS_ILOGB" symbol, which
2278 indicates to the C program that the ilogb() routine is available
2279 for extracting the exponent of double x as a signed integer.
2280
2281 "d_ilogbl"
2282 From d_ilogbl.U:
2283
2284 This variable conditionally defines the "HAS_ILOGBL" symbol, which
2285 indicates to the C program that the ilogbl() routine is available
2286 for extracting the exponent of long double x as a signed integer.
2287 If scalbnl is also present we can emulate frexpl.
2288
2289 "d_inc_version_list"
2290 From inc_version_list.U:
2291
2292 This variable conditionally defines "PERL_INC_VERSION_LIST". It is
2293 set to undef when "PERL_INC_VERSION_LIST" is empty.
2294
2295 "d_inetaton"
2296 From d_inetaton.U:
2297
2298 This variable conditionally defines the "HAS_INET_ATON" symbol,
2299 which indicates to the C program that the inet_aton() function is
2300 available to parse "IP" address "dotted-quad" strings.
2301
2302 "d_inetntop"
2303 From d_inetntop.U:
2304
2305 This variable conditionally defines the "HAS_INETNTOP" symbol,
2306 which indicates to the C program that the inet_ntop() function is
2307 available.
2308
2309 "d_inetpton"
2310 From d_inetpton.U:
2311
2312 This variable conditionally defines the "HAS_INETPTON" symbol,
2313 which indicates to the C program that the inet_pton() function is
2314 available.
2315
2316 "d_int64_t"
2317 From d_int64_t.U:
2318
2319 This symbol will be defined if the C compiler supports int64_t.
2320
2321 "d_ip_mreq"
2322 From d_socket.U:
2323
2324 This variable conditionally defines the "HAS_IP_MREQ" symbol, which
2325 indicates the availability of a struct ip_mreq.
2326
2327 "d_ip_mreq_source"
2328 From d_socket.U:
2329
2330 This variable conditionally defines the "HAS_IP_MREQ_SOURCE"
2331 symbol, which indicates the availability of a struct
2332 ip_mreq_source.
2333
2334 "d_ipv6_mreq"
2335 From d_socket.U:
2336
2337 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
2338 indicates the availability of a struct ipv6_mreq.
2339
2340 "d_ipv6_mreq_source"
2341 From d_socket.U:
2342
2343 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE
2344 symbol, which indicates the availability of a struct
2345 ipv6_mreq_source.
2346
2347 "d_isascii"
2348 From d_isascii.U:
2349
2350 This variable conditionally defines the "HAS_ISASCII" constant,
2351 which indicates to the C program that isascii() is available.
2352
2353 "d_isblank"
2354 From d_isblank.U:
2355
2356 This variable conditionally defines the "HAS_ISBLANK" constant,
2357 which indicates to the C program that isblank() is available.
2358
2359 "d_isfinite"
2360 From d_isfinite.U:
2361
2362 This variable conditionally defines the "HAS_ISFINITE" symbol,
2363 which indicates to the C program that the isfinite() routine is
2364 available.
2365
2366 "d_isfinitel"
2367 From d_isfinitel.U:
2368
2369 This variable conditionally defines the "HAS_ISFINITEL" symbol,
2370 which indicates to the C program that the isfinitel() routine is
2371 available.
2372
2373 "d_isinf"
2374 From d_isinf.U:
2375
2376 This variable conditionally defines the "HAS_ISINF" symbol, which
2377 indicates to the C program that the isinf() routine is available.
2378
2379 "d_isinfl"
2380 From d_isinfl.U:
2381
2382 This variable conditionally defines the "HAS_ISINFL" symbol, which
2383 indicates to the C program that the isinfl() routine is available.
2384
2385 "d_isless"
2386 From d_isless.U:
2387
2388 This variable conditionally defines the "HAS_ISLESS" symbol, which
2389 indicates to the C program that the isless() routine is available.
2390
2391 "d_isnan"
2392 From d_isnan.U:
2393
2394 This variable conditionally defines the "HAS_ISNAN" symbol, which
2395 indicates to the C program that the isnan() routine is available.
2396
2397 "d_isnanl"
2398 From d_isnanl.U:
2399
2400 This variable conditionally defines the "HAS_ISNANL" symbol, which
2401 indicates to the C program that the isnanl() routine is available.
2402
2403 "d_isnormal"
2404 From d_isnormal.U:
2405
2406 This variable conditionally defines the "HAS_ISNORMAL" symbol,
2407 which indicates to the C program that the isnormal() routine is
2408 available.
2409
2410 "d_j0"
2411 From d_j0.U:
2412
2413 This variable conditionally defines the HAS_J0 symbol, which
2414 indicates to the C program that the j0() routine is available.
2415
2416 "d_j0l"
2417 From d_j0.U:
2418
2419 This variable conditionally defines the HAS_J0L symbol, which
2420 indicates to the C program that the j0l() routine is available.
2421
2422 "d_killpg"
2423 From d_killpg.U:
2424
2425 This variable conditionally defines the "HAS_KILLPG" symbol, which
2426 indicates to the C program that the killpg() routine is available
2427 to kill process groups.
2428
2429 "d_lc_monetary_2008"
2430 From d_lc_monetary_2008.U:
2431
2432 This variable conditionally defines HAS_LC_MONETARY_2008 if libc
2433 has the international currency locale rules from "POSIX"
2434 1003.1-2008.
2435
2436 "d_lchown"
2437 From d_lchown.U:
2438
2439 This variable conditionally defines the "HAS_LCHOWN" symbol, which
2440 indicates to the C program that the lchown() routine is available
2441 to operate on a symbolic link (instead of following the link).
2442
2443 "d_ldbl_dig"
2444 From d_ldbl_dig.U:
2445
2446 This variable conditionally defines d_ldbl_dig if this system's
2447 header files provide "LDBL_DIG", which is the number of significant
2448 digits in a long double precision number.
2449
2450 "d_ldexpl"
2451 From d_longdbl.U:
2452
2453 This variable conditionally defines the "HAS_LDEXPL" symbol, which
2454 indicates to the C program that the ldexpl() routine is available.
2455
2456 "d_lgamma"
2457 From d_lgamma.U:
2458
2459 This variable conditionally defines the "HAS_LGAMMA" symbol, which
2460 indicates to the C program that the lgamma() routine is available
2461 for the log gamma function. See also d_tgamma and d_lgamma_r.
2462
2463 "d_lgamma_r"
2464 From d_lgamma_r.U:
2465
2466 This variable conditionally defines the "HAS_LGAMMA_R" symbol,
2467 which indicates to the C program that the lgamma_r() routine is
2468 available for the log gamma function, without using the global
2469 signgam variable.
2470
2471 "d_libm_lib_version"
2472 From d_libm_lib_version.U:
2473
2474 This variable conditionally defines the "LIBM_LIB_VERSION" symbol,
2475 which indicates to the C program that math.h defines "_LIB_VERSION"
2476 being available in libm
2477
2478 "d_libname_unique"
2479 From so.U:
2480
2481 This variable is defined if the target system insists on unique
2482 basenames for shared library files. This is currently true on
2483 Android, false everywhere else we know of. Defaults to "undef".
2484
2485 "d_link"
2486 From d_link.U:
2487
2488 This variable conditionally defines "HAS_LINK" if link() is
2489 available to create hard links.
2490
2491 "d_linkat"
2492 From d_fsat.U:
2493
2494 This variable conditionally defines the "HAS_LINKAT" symbol, which
2495 indicates the "POSIX" linkat() function is available.
2496
2497 "d_llrint"
2498 From d_llrint.U:
2499
2500 This variable conditionally defines the "HAS_LLRINT" symbol, which
2501 indicates to the C program that the llrint() routine is available
2502 to return the long long value closest to a double (according to the
2503 current rounding mode).
2504
2505 "d_llrintl"
2506 From d_llrintl.U:
2507
2508 This variable conditionally defines the "HAS_LLRINTL" symbol, which
2509 indicates to the C program that the llrintl() routine is available
2510 to return the long long value closest to a long double (according
2511 to the current rounding mode).
2512
2513 "d_llround"
2514 From d_llround.U:
2515
2516 This variable conditionally defines the "HAS_LLROUND" symbol, which
2517 indicates to the C program that the llround() routine is available
2518 to return the long long value nearest to x.
2519
2520 "d_llroundl"
2521 From d_llroundl.U:
2522
2523 This variable conditionally defines the "HAS_LLROUNDL" symbol,
2524 which indicates to the C program that the llroundl() routine is
2525 available to return the long long value nearest to x away from
2526 zero.
2527
2528 "d_localeconv_l"
2529 From d_localeconv_l.U:
2530
2531 This variable conditionally defines the "HAS_LOCALECONV_L" symbol,
2532 which indicates to the C program that the localeconv_l() routine is
2533 available.
2534
2535 "d_localtime64"
2536 From d_timefuncs64.U:
2537
2538 This variable conditionally defines the HAS_LOCALTIME64 symbol,
2539 which indicates to the C program that the localtime64 () routine is
2540 available.
2541
2542 "d_localtime_r"
2543 From d_localtime_r.U:
2544
2545 This variable conditionally defines the "HAS_LOCALTIME_R" symbol,
2546 which indicates to the C program that the localtime_r() routine is
2547 available.
2548
2549 "d_localtime_r_needs_tzset"
2550 From d_localtime_r.U:
2551
2552 This variable conditionally defines the "LOCALTIME_R_NEEDS_TZSET"
2553 symbol, which makes us call tzset before localtime_r()
2554
2555 "d_locconv"
2556 From d_locconv.U:
2557
2558 This variable conditionally defines "HAS_LOCALECONV" if
2559 localeconv() is available for numeric and monetary formatting
2560 conventions.
2561
2562 "d_lockf"
2563 From d_lockf.U:
2564
2565 This variable conditionally defines "HAS_LOCKF" if lockf() is
2566 available to do file locking.
2567
2568 "d_log1p"
2569 From d_log1p.U:
2570
2571 This variable conditionally defines the HAS_LOG1P symbol, which
2572 indicates to the C program that the logp1() routine is available to
2573 compute log(1 + x) for values of x close to zero.
2574
2575 "d_log2"
2576 From d_log2.U:
2577
2578 This variable conditionally defines the HAS_LOG2 symbol, which
2579 indicates to the C program that the log2() routine is available to
2580 compute log base two.
2581
2582 "d_logb"
2583 From d_logb.U:
2584
2585 This variable conditionally defines the "HAS_LOGB" symbol, which
2586 indicates to the C program that the logb() routine is available to
2587 extract the exponent of x.
2588
2589 "d_long_double_style_ieee"
2590 From d_longdbl.U:
2591
2592 This variable conditionally defines "LONG_DOUBLE_STYLE_IEEE" if the
2593 long double is any of the "IEEE" 754 style long doubles:
2594 "LONG_DOUBLE_STYLE_IEEE_STD", "LONG_DOUBLE_STYLE_IEEE_EXTENDED",
2595 "LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE".
2596
2597 "d_long_double_style_ieee_doubledouble"
2598 From d_longdbl.U:
2599
2600 This variable conditionally defines
2601 "LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE" if the long double is the
2602 128-bit "IEEE" 754 double-double.
2603
2604 "d_long_double_style_ieee_extended"
2605 From d_longdbl.U:
2606
2607 This variable conditionally defines
2608 "LONG_DOUBLE_STYLE_IEEE_EXTENDED" if the long double is the 80-bit
2609 "IEEE" 754 extended precision. Note that despite the "extended"
2610 this is less than the "std", since this is an extension of the
2611 double precision.
2612
2613 "d_long_double_style_ieee_std"
2614 From d_longdbl.U:
2615
2616 This variable conditionally defines "LONG_DOUBLE_STYLE_IEEE_STD" if
2617 the long double is the 128-bit "IEEE" 754.
2618
2619 "d_long_double_style_vax"
2620 From d_longdbl.U:
2621
2622 This variable conditionally defines "LONG_DOUBLE_STYLE_VAX" if the
2623 long double is the 128-bit "VAX" format H.
2624
2625 "d_longdbl"
2626 From d_longdbl.U:
2627
2628 This variable conditionally defines "HAS_LONG_DOUBLE" if the long
2629 double type is supported.
2630
2631 "d_longlong"
2632 From d_longlong.U:
2633
2634 This variable conditionally defines "HAS_LONG_LONG" if the long
2635 long type is supported.
2636
2637 "d_lrint"
2638 From d_lrint.U:
2639
2640 This variable conditionally defines the "HAS_LRINT" symbol, which
2641 indicates to the C program that the lrint() routine is available to
2642 return the integral value closest to a double (according to the
2643 current rounding mode).
2644
2645 "d_lrintl"
2646 From d_lrintl.U:
2647
2648 This variable conditionally defines the "HAS_LRINTL" symbol, which
2649 indicates to the C program that the lrintl() routine is available
2650 to return the integral value closest to a long double (according to
2651 the current rounding mode).
2652
2653 "d_lround"
2654 From d_lround.U:
2655
2656 This variable conditionally defines the "HAS_LROUND" symbol, which
2657 indicates to the C program that the lround() routine is available
2658 to return the integral value nearest to x.
2659
2660 "d_lroundl"
2661 From d_lroundl.U:
2662
2663 This variable conditionally defines the "HAS_LROUNDL" symbol, which
2664 indicates to the C program that the lroundl() routine is available
2665 to return the integral value nearest to x away from zero.
2666
2667 "d_lseekproto"
2668 From d_lseekproto.U:
2669
2670 This variable conditionally defines the "HAS_LSEEK_PROTO" symbol,
2671 which indicates to the C program that the system provides a
2672 prototype for the lseek() function. Otherwise, it is up to the
2673 program to supply one.
2674
2675 "d_lstat"
2676 From d_lstat.U:
2677
2678 This variable conditionally defines "HAS_LSTAT" if lstat() is
2679 available to do file stats on symbolic links.
2680
2681 "d_madvise"
2682 From d_madvise.U:
2683
2684 This variable conditionally defines "HAS_MADVISE" if madvise() is
2685 available to map a file into memory.
2686
2687 "d_malloc_good_size"
2688 From d_malloc_size.U:
2689
2690 This symbol, if defined, indicates that the malloc_good_size
2691 routine is available for use.
2692
2693 "d_malloc_size"
2694 From d_malloc_size.U:
2695
2696 This symbol, if defined, indicates that the malloc_size routine is
2697 available for use.
2698
2699 "d_malloc_usable_size"
2700 From d_malloc_size.U:
2701
2702 This symbol, if defined, indicates that the malloc_usable_size
2703 routine is available for use.
2704
2705 "d_mblen"
2706 From d_mblen.U:
2707
2708 This variable conditionally defines the "HAS_MBLEN" symbol, which
2709 indicates to the C program that the mblen() routine is available to
2710 find the number of bytes in a multibyte character.
2711
2712 "d_mbrlen"
2713 From d_mbrlen.U:
2714
2715 This variable conditionally defines the "HAS_MBRLEN" symbol if the
2716 mbrlen() routine is available to be used to get the length of
2717 multi-byte character strings.
2718
2719 "d_mbrtowc"
2720 From d_mbrtowc.U:
2721
2722 This variable conditionally defines the "HAS_MBRTOWC" symbol if the
2723 mbrtowc() routine is available to be used to convert a multi-byte
2724 character into a wide character.
2725
2726 "d_mbstowcs"
2727 From d_mbstowcs.U:
2728
2729 This variable conditionally defines the "HAS_MBSTOWCS" symbol,
2730 which indicates to the C program that the mbstowcs() routine is
2731 available to convert a multibyte string into a wide character
2732 string.
2733
2734 "d_mbtowc"
2735 From d_mbtowc.U:
2736
2737 This variable conditionally defines the "HAS_MBTOWC" symbol, which
2738 indicates to the C program that the mbtowc() routine is available
2739 to convert multibyte to a wide character.
2740
2741 "d_memmem"
2742 From d_memmem.U:
2743
2744 This variable conditionally defines the "HAS_MEMMEM" symbol, which
2745 indicates to the C program that the memmem() routine is available
2746 to return a pointer to the start of the first occurrence of a
2747 substring in a memory area (or "NULL" if not found).
2748
2749 "d_memrchr"
2750 From d_memrchr.U:
2751
2752 This variable conditionally defines the "HAS_MEMRCHR" symbol, which
2753 indicates to the C program that the memrchr() routine is available
2754 to return a pointer to the last occurrence of a byte in a memory
2755 area (or "NULL" if not found).
2756
2757 "d_mkdir"
2758 From d_mkdir.U:
2759
2760 This variable conditionally defines the "HAS_MKDIR" symbol, which
2761 indicates to the C program that the mkdir() routine is available to
2762 create directories..
2763
2764 "d_mkdtemp"
2765 From d_mkdtemp.U:
2766
2767 This variable conditionally defines the "HAS_MKDTEMP" symbol, which
2768 indicates to the C program that the mkdtemp() routine is available
2769 to exclusively create a uniquely named temporary directory.
2770
2771 "d_mkfifo"
2772 From d_mkfifo.U:
2773
2774 This variable conditionally defines the "HAS_MKFIFO" symbol, which
2775 indicates to the C program that the mkfifo() routine is available.
2776
2777 "d_mkostemp"
2778 From d_mkostemp.U:
2779
2780 This variable conditionally defines "HAS_MKOSTEMP" if mkostemp() is
2781 available to exclusively create and open a uniquely named (with a
2782 suffix) temporary file.
2783
2784 "d_mkstemp"
2785 From d_mkstemp.U:
2786
2787 This variable conditionally defines the "HAS_MKSTEMP" symbol, which
2788 indicates to the C program that the mkstemp() routine is available
2789 to exclusively create and open a uniquely named temporary file.
2790
2791 "d_mkstemps"
2792 From d_mkstemps.U:
2793
2794 This variable conditionally defines the "HAS_MKSTEMPS" symbol,
2795 which indicates to the C program that the mkstemps() routine is
2796 available to exclusively create and open a uniquely named (with a
2797 suffix) temporary file.
2798
2799 "d_mktime"
2800 From d_mktime.U:
2801
2802 This variable conditionally defines the "HAS_MKTIME" symbol, which
2803 indicates to the C program that the mktime() routine is available.
2804
2805 "d_mktime64"
2806 From d_timefuncs64.U:
2807
2808 This variable conditionally defines the HAS_MKTIME64 symbol, which
2809 indicates to the C program that the mktime64 () routine is
2810 available.
2811
2812 "d_mmap"
2813 From d_mmap.U:
2814
2815 This variable conditionally defines "HAS_MMAP" if mmap() is
2816 available to map a file into memory.
2817
2818 "d_modfl"
2819 From d_modfl.U:
2820
2821 This variable conditionally defines the "HAS_MODFL" symbol, which
2822 indicates to the C program that the modfl() routine is available.
2823
2824 "d_modflproto"
2825 From d_modfl.U:
2826
2827 This symbol, if defined, indicates that the system provides a
2828 prototype for the modfl() function. Otherwise, it is up to the
2829 program to supply one. C99 says it should be long double
2830 modfl(long double, long double *);
2831
2832 "d_mprotect"
2833 From d_mprotect.U:
2834
2835 This variable conditionally defines "HAS_MPROTECT" if mprotect() is
2836 available to modify the access protection of a memory mapped file.
2837
2838 "d_msg"
2839 From d_msg.U:
2840
2841 This variable conditionally defines the "HAS_MSG" symbol, which
2842 indicates that the entire msg*(2) library is present.
2843
2844 "d_msg_ctrunc"
2845 From d_socket.U:
2846
2847 This variable conditionally defines the "HAS_MSG_CTRUNC" symbol,
2848 which indicates that the "MSG_CTRUNC" is available. #ifdef is not
2849 enough because it may be an enum, glibc has been known to do this.
2850
2851 "d_msg_dontroute"
2852 From d_socket.U:
2853
2854 This variable conditionally defines the "HAS_MSG_DONTROUTE" symbol,
2855 which indicates that the "MSG_DONTROUTE" is available. #ifdef is
2856 not enough because it may be an enum, glibc has been known to do
2857 this.
2858
2859 "d_msg_oob"
2860 From d_socket.U:
2861
2862 This variable conditionally defines the "HAS_MSG_OOB" symbol, which
2863 indicates that the "MSG_OOB" is available. #ifdef is not enough
2864 because it may be an enum, glibc has been known to do this.
2865
2866 "d_msg_peek"
2867 From d_socket.U:
2868
2869 This variable conditionally defines the "HAS_MSG_PEEK" symbol,
2870 which indicates that the "MSG_PEEK" is available. #ifdef is not
2871 enough because it may be an enum, glibc has been known to do this.
2872
2873 "d_msg_proxy"
2874 From d_socket.U:
2875
2876 This variable conditionally defines the "HAS_MSG_PROXY" symbol,
2877 which indicates that the "MSG_PROXY" is available. #ifdef is not
2878 enough because it may be an enum, glibc has been known to do this.
2879
2880 "d_msgctl"
2881 From d_msgctl.U:
2882
2883 This variable conditionally defines the "HAS_MSGCTL" symbol, which
2884 indicates to the C program that the msgctl() routine is available.
2885
2886 "d_msgget"
2887 From d_msgget.U:
2888
2889 This variable conditionally defines the "HAS_MSGGET" symbol, which
2890 indicates to the C program that the msgget() routine is available.
2891
2892 "d_msghdr_s"
2893 From d_msghdr_s.U:
2894
2895 This variable conditionally defines the "HAS_STRUCT_MSGHDR" symbol,
2896 which indicates that the struct msghdr is supported.
2897
2898 "d_msgrcv"
2899 From d_msgrcv.U:
2900
2901 This variable conditionally defines the "HAS_MSGRCV" symbol, which
2902 indicates to the C program that the msgrcv() routine is available.
2903
2904 "d_msgsnd"
2905 From d_msgsnd.U:
2906
2907 This variable conditionally defines the "HAS_MSGSND" symbol, which
2908 indicates to the C program that the msgsnd() routine is available.
2909
2910 "d_msync"
2911 From d_msync.U:
2912
2913 This variable conditionally defines "HAS_MSYNC" if msync() is
2914 available to synchronize a mapped file.
2915
2916 "d_munmap"
2917 From d_munmap.U:
2918
2919 This variable conditionally defines "HAS_MUNMAP" if munmap() is
2920 available to unmap a region mapped by mmap().
2921
2922 "d_mymalloc"
2923 From mallocsrc.U:
2924
2925 This variable conditionally defines "MYMALLOC" in case other parts
2926 of the source want to take special action if "MYMALLOC" is used.
2927 This may include different sorts of profiling or error detection.
2928
2929 "d_nan"
2930 From d_nan.U:
2931
2932 This variable conditionally defines "HAS_NAN" if nan() is available
2933 to generate NaN.
2934
2935 "d_nanosleep"
2936 From d_nanosleep.U:
2937
2938 This variable conditionally defines "HAS_NANOSLEEP" if nanosleep()
2939 is available to sleep with 1E-9 sec accuracy.
2940
2941 "d_ndbm"
2942 From i_ndbm.U:
2943
2944 This variable conditionally defines the "HAS_NDBM" symbol, which
2945 indicates that both the ndbm.h include file and an appropriate ndbm
2946 library exist. Consult the different i_*ndbm variables to find out
2947 the actual include location. Sometimes, a system has the header
2948 file but not the library. This variable will only be set if the
2949 system has both.
2950
2951 "d_ndbm_h_uses_prototypes"
2952 From i_ndbm.U:
2953
2954 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
2955 symbol, which indicates that the ndbm.h include file uses real
2956 "ANSI" C prototypes instead of K&R style function declarations. K&R
2957 style declarations are unsupported in C++, so the include file
2958 requires special handling when using a C++ compiler and this
2959 variable is undefined. Consult the different
2960 d_*ndbm_h_uses_prototypes variables to get the same information for
2961 alternative ndbm.h include files.
2962
2963 "d_nearbyint"
2964 From d_nearbyint.U:
2965
2966 This variable conditionally defines "HAS_NEARBYINT" if nearbyint()
2967 is available to return the integral value closest to (according to
2968 the current rounding mode) to x.
2969
2970 "d_newlocale"
2971 From d_newlocale.U:
2972
2973 This variable conditionally defines the "HAS_NEWLOCALE" symbol,
2974 which indicates to the C program that the newlocale() routine is
2975 available to return a new locale object or modify an existing
2976 locale object.
2977
2978 "d_nextafter"
2979 From d_nextafter.U:
2980
2981 This variable conditionally defines "HAS_NEXTAFTER" if nextafter()
2982 is available to return the next machine representable double from x
2983 in direction y.
2984
2985 "d_nexttoward"
2986 From d_nexttoward.U:
2987
2988 This variable conditionally defines "HAS_NEXTTOWARD" if
2989 nexttoward() is available to return the next machine representable
2990 long double from x in direction y.
2991
2992 "d_nice"
2993 From d_nice.U:
2994
2995 This variable conditionally defines the "HAS_NICE" symbol, which
2996 indicates to the C program that the nice() routine is available.
2997
2998 "d_nl_langinfo"
2999 From d_nl_langinfo.U:
3000
3001 This variable conditionally defines the "HAS_NL_LANGINFO" symbol,
3002 which indicates to the C program that the nl_langinfo() routine is
3003 available.
3004
3005 "d_nl_langinfo_l"
3006 From d_nl_langinfo_l.U:
3007
3008 This variable contains the eventual value of the
3009 "HAS_NL_LANGINFO_L" symbol, which indicates if the nl_langinfo_l()
3010 function exists.
3011
3012 "d_non_int_bitfields"
3013 From d_bitfield.U:
3014
3015 This variable conditionally defines "HAS_NON_INT_BITFIELDS" which
3016 indicates that the C compiler accepts struct bitfields of sizes
3017 that aren't "int" or "unsigned int"
3018
3019 "d_nv_preserves_uv"
3020 From perlxv.U:
3021
3022 This variable indicates whether a variable of type nvtype can
3023 preserve all the bits a variable of type uvtype.
3024
3025 "d_nv_zero_is_allbits_zero"
3026 From perlxv.U:
3027
3028 This variable indicates whether a variable of type nvtype stores
3029 0.0 in memory as all bits zero.
3030
3031 "d_off64_t"
3032 From d_off64_t.U:
3033
3034 This symbol will be defined if the C compiler supports off64_t.
3035
3036 "d_old_pthread_create_joinable"
3037 From d_pthrattrj.U:
3038
3039 This variable conditionally defines pthread_create_joinable. undef
3040 if pthread.h defines "PTHREAD_CREATE_JOINABLE".
3041
3042 "d_oldpthreads"
3043 From usethreads.U:
3044
3045 This variable conditionally defines the "OLD_PTHREADS_API" symbol,
3046 and indicates that Perl should be built to use the old draft
3047 "POSIX" threads "API". This is only potentially meaningful if
3048 usethreads is set.
3049
3050 "d_oldsock"
3051 From d_socket.U:
3052
3053 This variable conditionally defines the "OLDSOCKET" symbol, which
3054 indicates that the "BSD" socket interface is based on 4.1c and not
3055 4.2.
3056
3057 "d_open3"
3058 From d_open3.U:
3059
3060 This variable conditionally defines the HAS_OPEN3 manifest
3061 constant, which indicates to the C program that the 3 argument
3062 version of the open(2) function is available.
3063
3064 "d_openat"
3065 From d_fsat.U:
3066
3067 This variable conditionally defines the "HAS_OPENAT" symbol, which
3068 indicates the "POSIX" openat() function is available.
3069
3070 "d_pathconf"
3071 From d_pathconf.U:
3072
3073 This variable conditionally defines the "HAS_PATHCONF" symbol,
3074 which indicates to the C program that the pathconf() routine is
3075 available to determine file-system related limits and options
3076 associated with a given filename.
3077
3078 "d_pause"
3079 From d_pause.U:
3080
3081 This variable conditionally defines the "HAS_PAUSE" symbol, which
3082 indicates to the C program that the pause() routine is available to
3083 suspend a process until a signal is received.
3084
3085 "d_perl_otherlibdirs"
3086 From otherlibdirs.U:
3087
3088 This variable conditionally defines "PERL_OTHERLIBDIRS", which
3089 contains a colon-separated set of paths for the perl binary to
3090 include in @"INC". See also otherlibdirs.
3091
3092 "d_phostname"
3093 From d_gethname.U:
3094
3095 This variable conditionally defines the "HAS_PHOSTNAME" symbol,
3096 which contains the shell command which, when fed to popen(), may be
3097 used to derive the host name.
3098
3099 "d_pipe"
3100 From d_pipe.U:
3101
3102 This variable conditionally defines the "HAS_PIPE" symbol, which
3103 indicates to the C program that the pipe() routine is available to
3104 create an inter-process channel.
3105
3106 "d_pipe2"
3107 From d_pipe2.U:
3108
3109 This variable conditionally defines the HAS_PIPE2 symbol, which
3110 indicates to the C program that the pipe2() routine is available to
3111 create an inter-process channel.
3112
3113 "d_poll"
3114 From d_poll.U:
3115
3116 This variable conditionally defines the "HAS_POLL" symbol, which
3117 indicates to the C program that the poll() routine is available to
3118 poll active file descriptors.
3119
3120 "d_portable"
3121 From d_portable.U:
3122
3123 This variable conditionally defines the "PORTABLE" symbol, which
3124 indicates to the C program that it should not assume that it is
3125 running on the machine it was compiled on.
3126
3127 "d_prctl"
3128 From d_prctl.U:
3129
3130 This variable conditionally defines the "HAS_PRCTL" symbol, which
3131 indicates to the C program that the prctl() routine is available.
3132 Note that there are at least two prctl variants: Linux and Irix.
3133 While they are somewhat similar, they are incompatible.
3134
3135 "d_prctl_set_name"
3136 From d_prctl.U:
3137
3138 This variable conditionally defines the "HAS_PRCTL_SET_NAME"
3139 symbol, which indicates to the C program that the prctl() routine
3140 supports the "PR_SET_NAME" option.
3141
3142 "d_printf_format_null"
3143 From d_attribut.U:
3144
3145 This variable conditionally defines "PRINTF_FORMAT_NULL_OK", which
3146 indicates the C compiler allows printf-like formats to be null.
3147
3148 "d_procselfexe"
3149 From d_procselfexe.U:
3150
3151 Defined if $procselfexe is symlink to the absolute pathname of the
3152 executing program.
3153
3154 "d_pseudofork"
3155 From d_vfork.U:
3156
3157 This variable conditionally defines the "HAS_PSEUDOFORK" symbol,
3158 which indicates that an emulation of the fork routine is available.
3159
3160 "d_pthread_atfork"
3161 From d_pthread_atfork.U:
3162
3163 This variable conditionally defines the "HAS_PTHREAD_ATFORK"
3164 symbol, which indicates to the C program that the pthread_atfork()
3165 routine is available.
3166
3167 "d_pthread_attr_setscope"
3168 From d_pthread_attr_ss.U:
3169
3170 This variable conditionally defines "HAS_PTHREAD_ATTR_SETSCOPE" if
3171 pthread_attr_setscope() is available to set the contention scope
3172 attribute of a thread attribute object.
3173
3174 "d_pthread_yield"
3175 From d_pthread_y.U:
3176
3177 This variable conditionally defines the "HAS_PTHREAD_YIELD" symbol
3178 if the pthread_yield routine is available to yield the execution of
3179 the current thread.
3180
3181 "d_ptrdiff_t"
3182 From d_ptrdiff_t.U:
3183
3184 This symbol will be defined if the C compiler supports ptrdiff_t.
3185
3186 "d_pwage"
3187 From i_pwd.U:
3188
3189 This variable conditionally defines "PWAGE", which indicates that
3190 struct passwd contains pw_age.
3191
3192 "d_pwchange"
3193 From i_pwd.U:
3194
3195 This variable conditionally defines "PWCHANGE", which indicates
3196 that struct passwd contains pw_change.
3197
3198 "d_pwclass"
3199 From i_pwd.U:
3200
3201 This variable conditionally defines "PWCLASS", which indicates that
3202 struct passwd contains pw_class.
3203
3204 "d_pwcomment"
3205 From i_pwd.U:
3206
3207 This variable conditionally defines "PWCOMMENT", which indicates
3208 that struct passwd contains pw_comment.
3209
3210 "d_pwexpire"
3211 From i_pwd.U:
3212
3213 This variable conditionally defines "PWEXPIRE", which indicates
3214 that struct passwd contains pw_expire.
3215
3216 "d_pwgecos"
3217 From i_pwd.U:
3218
3219 This variable conditionally defines "PWGECOS", which indicates that
3220 struct passwd contains pw_gecos.
3221
3222 "d_pwpasswd"
3223 From i_pwd.U:
3224
3225 This variable conditionally defines "PWPASSWD", which indicates
3226 that struct passwd contains pw_passwd.
3227
3228 "d_pwquota"
3229 From i_pwd.U:
3230
3231 This variable conditionally defines "PWQUOTA", which indicates that
3232 struct passwd contains pw_quota.
3233
3234 "d_qgcvt"
3235 From d_qgcvt.U:
3236
3237 This variable conditionally defines the "HAS_QGCVT" symbol, which
3238 indicates to the C program that the qgcvt() routine is available.
3239
3240 "d_quad"
3241 From quadtype.U:
3242
3243 This variable, if defined, tells that there's a 64-bit integer
3244 type, quadtype.
3245
3246 "d_querylocale"
3247 From d_newlocale.U:
3248
3249 This variable conditionally defines the "HAS_QUERYLOCALE" symbol,
3250 which indicates to the C program that the querylocale() routine is
3251 available to return the name of the locale for a category mask.
3252
3253 "d_random_r"
3254 From d_random_r.U:
3255
3256 This variable conditionally defines the "HAS_RANDOM_R" symbol,
3257 which indicates to the C program that the random_r() routine is
3258 available.
3259
3260 "d_re_comp"
3261 From d_regcmp.U:
3262
3263 This variable conditionally defines the "HAS_RECOMP" symbol, which
3264 indicates to the C program that the re_comp() routine is available
3265 for regular pattern matching (usually on "BSD"). If so, it is
3266 likely that re_exec() exists.
3267
3268 "d_readdir"
3269 From d_readdir.U:
3270
3271 This variable conditionally defines "HAS_READDIR" if readdir() is
3272 available to read directory entries.
3273
3274 "d_readdir64_r"
3275 From d_readdir64_r.U:
3276
3277 This variable conditionally defines the HAS_READDIR64_R symbol,
3278 which indicates to the C program that the readdir64_r() routine is
3279 available.
3280
3281 "d_readdir_r"
3282 From d_readdir_r.U:
3283
3284 This variable conditionally defines the "HAS_READDIR_R" symbol,
3285 which indicates to the C program that the readdir_r() routine is
3286 available.
3287
3288 "d_readlink"
3289 From d_readlink.U:
3290
3291 This variable conditionally defines the "HAS_READLINK" symbol,
3292 which indicates to the C program that the readlink() routine is
3293 available to read the value of a symbolic link.
3294
3295 "d_readv"
3296 From d_readv.U:
3297
3298 This variable conditionally defines the "HAS_READV" symbol, which
3299 indicates to the C program that the readv() routine is available.
3300
3301 "d_recvmsg"
3302 From d_recvmsg.U:
3303
3304 This variable conditionally defines the "HAS_RECVMSG" symbol, which
3305 indicates to the C program that the recvmsg() routine is available.
3306
3307 "d_regcmp"
3308 From d_regcmp.U:
3309
3310 This variable conditionally defines the "HAS_REGCMP" symbol, which
3311 indicates to the C program that the regcmp() routine is available
3312 for regular pattern matching (usually on System V).
3313
3314 "d_regcomp"
3315 From d_regcmp.U:
3316
3317 This variable conditionally defines the "HAS_REGCOMP" symbol, which
3318 indicates to the C program that the regcomp() routine is available
3319 for regular pattern matching (usually on POSIX.2 conforming
3320 systems).
3321
3322 "d_remainder"
3323 From d_remainder.U:
3324
3325 This variable conditionally defines the "HAS_REMAINDER" symbol,
3326 which indicates to the C program that the remainder() routine is
3327 available.
3328
3329 "d_remquo"
3330 From d_remquo.U:
3331
3332 This variable conditionally defines the "HAS_REMQUO" symbol, which
3333 indicates to the C program that the remquo() routine is available.
3334
3335 "d_rename"
3336 From d_rename.U:
3337
3338 This variable conditionally defines the "HAS_RENAME" symbol, which
3339 indicates to the C program that the rename() routine is available
3340 to rename files.
3341
3342 "d_renameat"
3343 From d_fsat.U:
3344
3345 This variable conditionally defines the "HAS_RENAMEAT" symbol,
3346 which indicates the "POSIX" renameat() function is available.
3347
3348 "d_rewinddir"
3349 From d_readdir.U:
3350
3351 This variable conditionally defines "HAS_REWINDDIR" if rewinddir()
3352 is available.
3353
3354 "d_rint"
3355 From d_rint.U:
3356
3357 This variable conditionally defines the "HAS_RINT" symbol, which
3358 indicates to the C program that the rint() routine is available.
3359
3360 "d_rmdir"
3361 From d_rmdir.U:
3362
3363 This variable conditionally defines "HAS_RMDIR" if rmdir() is
3364 available to remove directories.
3365
3366 "d_round"
3367 From d_round.U:
3368
3369 This variable conditionally defines the "HAS_ROUND" symbol, which
3370 indicates to the C program that the round() routine is available.
3371
3372 "d_sbrkproto"
3373 From d_sbrkproto.U:
3374
3375 This variable conditionally defines the "HAS_SBRK_PROTO" symbol,
3376 which indicates to the C program that the system provides a
3377 prototype for the sbrk() function. Otherwise, it is up to the
3378 program to supply one.
3379
3380 "d_scalbn"
3381 From d_scalbn.U:
3382
3383 This variable conditionally defines the "HAS_SCALBN" symbol, which
3384 indicates to the C program that the scalbn() routine is available.
3385
3386 "d_scalbnl"
3387 From d_scalbnl.U:
3388
3389 This variable conditionally defines the "HAS_SCALBNL" symbol, which
3390 indicates to the C program that the scalbnl() routine is available.
3391 If ilogbl is also present we can emulate frexpl.
3392
3393 "d_sched_yield"
3394 From d_pthread_y.U:
3395
3396 This variable conditionally defines the "HAS_SCHED_YIELD" symbol if
3397 the sched_yield routine is available to yield the execution of the
3398 current thread.
3399
3400 "d_scm_rights"
3401 From d_socket.U:
3402
3403 This variable conditionally defines the "HAS_SCM_RIGHTS" symbol,
3404 which indicates that the "SCM_RIGHTS" is available. #ifdef is not
3405 enough because it may be an enum, glibc has been known to do this.
3406
3407 "d_seekdir"
3408 From d_readdir.U:
3409
3410 This variable conditionally defines "HAS_SEEKDIR" if seekdir() is
3411 available.
3412
3413 "d_select"
3414 From d_select.U:
3415
3416 This variable conditionally defines "HAS_SELECT" if select() is
3417 available to select active file descriptors. A <sys/time.h>
3418 inclusion may be necessary for the timeout field.
3419
3420 "d_sem"
3421 From d_sem.U:
3422
3423 This variable conditionally defines the "HAS_SEM" symbol, which
3424 indicates that the entire sem*(2) library is present.
3425
3426 "d_semctl"
3427 From d_semctl.U:
3428
3429 This variable conditionally defines the "HAS_SEMCTL" symbol, which
3430 indicates to the C program that the semctl() routine is available.
3431
3432 "d_semctl_semid_ds"
3433 From d_union_semun.U:
3434
3435 This variable conditionally defines "USE_SEMCTL_SEMID_DS", which
3436 indicates that struct semid_ds * is to be used for semctl
3437 "IPC_STAT".
3438
3439 "d_semctl_semun"
3440 From d_union_semun.U:
3441
3442 This variable conditionally defines "USE_SEMCTL_SEMUN", which
3443 indicates that union semun is to be used for semctl "IPC_STAT".
3444
3445 "d_semget"
3446 From d_semget.U:
3447
3448 This variable conditionally defines the "HAS_SEMGET" symbol, which
3449 indicates to the C program that the semget() routine is available.
3450
3451 "d_semop"
3452 From d_semop.U:
3453
3454 This variable conditionally defines the "HAS_SEMOP" symbol, which
3455 indicates to the C program that the semop() routine is available.
3456
3457 "d_sendmsg"
3458 From d_sendmsg.U:
3459
3460 This variable conditionally defines the "HAS_SENDMSG" symbol, which
3461 indicates to the C program that the sendmsg() routine is available.
3462
3463 "d_setegid"
3464 From d_setegid.U:
3465
3466 This variable conditionally defines the "HAS_SETEGID" symbol, which
3467 indicates to the C program that the setegid() routine is available
3468 to change the effective gid of the current program.
3469
3470 "d_setenv"
3471 From d_setenv.U:
3472
3473 This variable conditionally defines the "HAS_SETENV" symbol, which
3474 indicates to the C program that the setenv routine is available.
3475
3476 "d_seteuid"
3477 From d_seteuid.U:
3478
3479 This variable conditionally defines the "HAS_SETEUID" symbol, which
3480 indicates to the C program that the seteuid() routine is available
3481 to change the effective uid of the current program.
3482
3483 "d_setgrent"
3484 From d_setgrent.U:
3485
3486 This variable conditionally defines the "HAS_SETGRENT" symbol,
3487 which indicates to the C program that the setgrent() routine is
3488 available for initializing sequential access to the group database.
3489
3490 "d_setgrent_r"
3491 From d_setgrent_r.U:
3492
3493 This variable conditionally defines the "HAS_SETGRENT_R" symbol,
3494 which indicates to the C program that the setgrent_r() routine is
3495 available.
3496
3497 "d_setgrps"
3498 From d_setgrps.U:
3499
3500 This variable conditionally defines the "HAS_SETGROUPS" symbol,
3501 which indicates to the C program that the setgroups() routine is
3502 available to set the list of process groups.
3503
3504 "d_sethent"
3505 From d_sethent.U:
3506
3507 This variable conditionally defines "HAS_SETHOSTENT" if
3508 sethostent() is available.
3509
3510 "d_sethostent_r"
3511 From d_sethostent_r.U:
3512
3513 This variable conditionally defines the "HAS_SETHOSTENT_R" symbol,
3514 which indicates to the C program that the sethostent_r() routine is
3515 available.
3516
3517 "d_setitimer"
3518 From d_setitimer.U:
3519
3520 This variable conditionally defines the "HAS_SETITIMER" symbol,
3521 which indicates to the C program that the setitimer() routine is
3522 available.
3523
3524 "d_setlinebuf"
3525 From d_setlnbuf.U:
3526
3527 This variable conditionally defines the "HAS_SETLINEBUF" symbol,
3528 which indicates to the C program that the setlinebuf() routine is
3529 available to change stderr or stdout from block-buffered or
3530 unbuffered to a line-buffered mode.
3531
3532 "d_setlocale"
3533 From d_setlocale.U:
3534
3535 This variable conditionally defines "HAS_SETLOCALE" if setlocale()
3536 is available to handle locale-specific ctype implementations.
3537
3538 "d_setlocale_accepts_any_locale_name"
3539 From d_setlocale.U:
3540
3541 This variable conditionally defines
3542 "SETLOCALE_ACCEPTS_ANY_LOCALE_NAME" if setlocale() accepts any
3543 locale name.
3544
3545 "d_setlocale_r"
3546 From d_setlocale_r.U:
3547
3548 This variable conditionally defines the "HAS_SETLOCALE_R" symbol,
3549 which indicates to the C program that the setlocale_r() routine is
3550 available.
3551
3552 "d_setnent"
3553 From d_setnent.U:
3554
3555 This variable conditionally defines "HAS_SETNETENT" if setnetent()
3556 is available.
3557
3558 "d_setnetent_r"
3559 From d_setnetent_r.U:
3560
3561 This variable conditionally defines the "HAS_SETNETENT_R" symbol,
3562 which indicates to the C program that the setnetent_r() routine is
3563 available.
3564
3565 "d_setpent"
3566 From d_setpent.U:
3567
3568 This variable conditionally defines "HAS_SETPROTOENT" if
3569 setprotoent() is available.
3570
3571 "d_setpgid"
3572 From d_setpgid.U:
3573
3574 This variable conditionally defines the "HAS_SETPGID" symbol if the
3575 setpgid(pid, gpid) function is available to set process group "ID".
3576
3577 "d_setpgrp"
3578 From d_setpgrp.U:
3579
3580 This variable conditionally defines "HAS_SETPGRP" if setpgrp() is
3581 available to set the current process group.
3582
3583 "d_setpgrp2"
3584 From d_setpgrp2.U:
3585
3586 This variable conditionally defines the HAS_SETPGRP2 symbol, which
3587 indicates to the C program that the setpgrp2() (as in DG/"UX")
3588 routine is available to set the current process group.
3589
3590 "d_setprior"
3591 From d_setprior.U:
3592
3593 This variable conditionally defines "HAS_SETPRIORITY" if
3594 setpriority() is available to set a process's priority.
3595
3596 "d_setproctitle"
3597 From d_setproctitle.U:
3598
3599 This variable conditionally defines the "HAS_SETPROCTITLE" symbol,
3600 which indicates to the C program that the setproctitle() routine is
3601 available.
3602
3603 "d_setprotoent_r"
3604 From d_setprotoent_r.U:
3605
3606 This variable conditionally defines the "HAS_SETPROTOENT_R" symbol,
3607 which indicates to the C program that the setprotoent_r() routine
3608 is available.
3609
3610 "d_setpwent"
3611 From d_setpwent.U:
3612
3613 This variable conditionally defines the "HAS_SETPWENT" symbol,
3614 which indicates to the C program that the setpwent() routine is
3615 available for initializing sequential access to the passwd
3616 database.
3617
3618 "d_setpwent_r"
3619 From d_setpwent_r.U:
3620
3621 This variable conditionally defines the "HAS_SETPWENT_R" symbol,
3622 which indicates to the C program that the setpwent_r() routine is
3623 available.
3624
3625 "d_setregid"
3626 From d_setregid.U:
3627
3628 This variable conditionally defines "HAS_SETREGID" if setregid() is
3629 available to change the real and effective gid of the current
3630 process.
3631
3632 "d_setresgid"
3633 From d_setregid.U:
3634
3635 This variable conditionally defines "HAS_SETRESGID" if setresgid()
3636 is available to change the real, effective and saved gid of the
3637 current process.
3638
3639 "d_setresuid"
3640 From d_setreuid.U:
3641
3642 This variable conditionally defines "HAS_SETREUID" if setresuid()
3643 is available to change the real, effective and saved uid of the
3644 current process.
3645
3646 "d_setreuid"
3647 From d_setreuid.U:
3648
3649 This variable conditionally defines "HAS_SETREUID" if setreuid() is
3650 available to change the real and effective uid of the current
3651 process.
3652
3653 "d_setrgid"
3654 From d_setrgid.U:
3655
3656 This variable conditionally defines the "HAS_SETRGID" symbol, which
3657 indicates to the C program that the setrgid() routine is available
3658 to change the real gid of the current program.
3659
3660 "d_setruid"
3661 From d_setruid.U:
3662
3663 This variable conditionally defines the "HAS_SETRUID" symbol, which
3664 indicates to the C program that the setruid() routine is available
3665 to change the real uid of the current program.
3666
3667 "d_setsent"
3668 From d_setsent.U:
3669
3670 This variable conditionally defines "HAS_SETSERVENT" if
3671 setservent() is available.
3672
3673 "d_setservent_r"
3674 From d_setservent_r.U:
3675
3676 This variable conditionally defines the "HAS_SETSERVENT_R" symbol,
3677 which indicates to the C program that the setservent_r() routine is
3678 available.
3679
3680 "d_setsid"
3681 From d_setsid.U:
3682
3683 This variable conditionally defines "HAS_SETSID" if setsid() is
3684 available to set the process group "ID".
3685
3686 "d_setvbuf"
3687 From d_setvbuf.U:
3688
3689 This variable conditionally defines the "HAS_SETVBUF" symbol, which
3690 indicates to the C program that the setvbuf() routine is available
3691 to change buffering on an open stdio stream.
3692
3693 "d_shm"
3694 From d_shm.U:
3695
3696 This variable conditionally defines the "HAS_SHM" symbol, which
3697 indicates that the entire shm*(2) library is present.
3698
3699 "d_shmat"
3700 From d_shmat.U:
3701
3702 This variable conditionally defines the "HAS_SHMAT" symbol, which
3703 indicates to the C program that the shmat() routine is available.
3704
3705 "d_shmatprototype"
3706 From d_shmat.U:
3707
3708 This variable conditionally defines the "HAS_SHMAT_PROTOTYPE"
3709 symbol, which indicates that sys/shm.h has a prototype for shmat.
3710
3711 "d_shmctl"
3712 From d_shmctl.U:
3713
3714 This variable conditionally defines the "HAS_SHMCTL" symbol, which
3715 indicates to the C program that the shmctl() routine is available.
3716
3717 "d_shmdt"
3718 From d_shmdt.U:
3719
3720 This variable conditionally defines the "HAS_SHMDT" symbol, which
3721 indicates to the C program that the shmdt() routine is available.
3722
3723 "d_shmget"
3724 From d_shmget.U:
3725
3726 This variable conditionally defines the "HAS_SHMGET" symbol, which
3727 indicates to the C program that the shmget() routine is available.
3728
3729 "d_sigaction"
3730 From d_sigaction.U:
3731
3732 This variable conditionally defines the "HAS_SIGACTION" symbol,
3733 which indicates that the Vr4 sigaction() routine is available.
3734
3735 "d_siginfo_si_addr"
3736 From d_siginfo_si.U:
3737
3738 This variable conditionally defines the "HAS_SIGINFO_SI_ADDR"
3739 symbol, which indicates that the siginfo_t struct has the si_addr
3740 member.
3741
3742 "d_siginfo_si_band"
3743 From d_siginfo_si.U:
3744
3745 This variable conditionally defines the "HAS_SIGINFO_SI_BAND"
3746 symbol, which indicates that the siginfo_t struct has the si_band
3747 member.
3748
3749 "d_siginfo_si_errno"
3750 From d_siginfo_si.U:
3751
3752 This variable conditionally defines the "HAS_SIGINFO_SI_ERRNO"
3753 symbol, which indicates that the siginfo_t struct has the si_errno
3754 member.
3755
3756 "d_siginfo_si_fd"
3757 From d_siginfo_si.U:
3758
3759 This variable conditionally defines the "HAS_SIGINFO_SI_FD" symbol,
3760 which indicates that the siginfo_t struct has the si_fd member.
3761
3762 "d_siginfo_si_pid"
3763 From d_siginfo_si.U:
3764
3765 This variable conditionally defines the "HAS_SIGINFO_SI_PID"
3766 symbol, which indicates that the siginfo_t struct has the si_pid
3767 member.
3768
3769 "d_siginfo_si_status"
3770 From d_siginfo_si.U:
3771
3772 This variable conditionally defines the "HAS_SIGINFO_SI_STATUS"
3773 symbol, which indicates that the siginfo_t struct has the si_status
3774 member.
3775
3776 "d_siginfo_si_uid"
3777 From d_siginfo_si.U:
3778
3779 This variable conditionally defines the "HAS_SIGINFO_SI_UID"
3780 symbol, which indicates that the siginfo_t struct has the si_uid
3781 member.
3782
3783 "d_siginfo_si_value"
3784 From d_siginfo_si.U:
3785
3786 This variable conditionally defines the "HAS_SIGINFO_SI_VALUE"
3787 symbol, which indicates that the siginfo_t struct has the si_value
3788 member.
3789
3790 "d_signbit"
3791 From d_signbit.U:
3792
3793 This variable conditionally defines the "HAS_SIGNBIT" symbol, which
3794 indicates to the C program that the signbit() routine is available
3795 and safe to use with perl's intern "NV" type.
3796
3797 "d_sigprocmask"
3798 From d_sigprocmask.U:
3799
3800 This variable conditionally defines "HAS_SIGPROCMASK" if
3801 sigprocmask() is available to examine or change the signal mask of
3802 the calling process.
3803
3804 "d_sigsetjmp"
3805 From d_sigsetjmp.U:
3806
3807 This variable conditionally defines the "HAS_SIGSETJMP" symbol,
3808 which indicates that the sigsetjmp() routine is available to call
3809 setjmp() and optionally save the process's signal mask.
3810
3811 "d_sin6_scope_id"
3812 From d_socket.U:
3813
3814 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol,
3815 which indicates that a struct sockaddr_in6 structure has the
3816 sin6_scope_id member.
3817
3818 "d_sitearch"
3819 From sitearch.U:
3820
3821 This variable conditionally defines "SITEARCH" to hold the pathname
3822 of architecture-dependent library files for $package. If $sitearch
3823 is the same as $archlib, then this is set to undef.
3824
3825 "d_snprintf"
3826 From d_snprintf.U:
3827
3828 This variable conditionally defines the "HAS_SNPRINTF" symbol,
3829 which indicates to the C program that the snprintf () library
3830 function is available.
3831
3832 "d_sockaddr_in6"
3833 From d_socket.U:
3834
3835 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol,
3836 which indicates the availability of a struct sockaddr_in6.
3837
3838 "d_sockaddr_sa_len"
3839 From d_socket.U:
3840
3841 This variable conditionally defines the "HAS_SOCKADDR_SA_LEN"
3842 symbol, which indicates that a struct sockaddr structure has the
3843 sa_len member.
3844
3845 "d_sockaddr_storage"
3846 From d_socket.U:
3847
3848 This variable conditionally defines the "HAS_SOCKADDR_STORAGE"
3849 symbol, which indicates the availability of a struct
3850 sockaddr_storage.
3851
3852 "d_sockatmark"
3853 From d_sockatmark.U:
3854
3855 This variable conditionally defines the "HAS_SOCKATMARK" symbol,
3856 which indicates to the C program that the sockatmark() routine is
3857 available.
3858
3859 "d_sockatmarkproto"
3860 From d_sockatmarkproto.U:
3861
3862 This variable conditionally defines the "HAS_SOCKATMARK_PROTO"
3863 symbol, which indicates to the C program that the system provides a
3864 prototype for the sockatmark() function. Otherwise, it is up to
3865 the program to supply one.
3866
3867 "d_socket"
3868 From d_socket.U:
3869
3870 This variable conditionally defines "HAS_SOCKET", which indicates
3871 that the "BSD" socket interface is supported.
3872
3873 "d_socklen_t"
3874 From d_socklen_t.U:
3875
3876 This symbol will be defined if the C compiler supports socklen_t.
3877
3878 "d_sockpair"
3879 From d_socket.U:
3880
3881 This variable conditionally defines the "HAS_SOCKETPAIR" symbol,
3882 which indicates that the "BSD" socketpair() is supported.
3883
3884 "d_socks5_init"
3885 From d_socks5_init.U:
3886
3887 This variable conditionally defines the HAS_SOCKS5_INIT symbol,
3888 which indicates to the C program that the socks5_init() routine is
3889 available.
3890
3891 "d_sqrtl"
3892 From d_sqrtl.U:
3893
3894 This variable conditionally defines the "HAS_SQRTL" symbol, which
3895 indicates to the C program that the sqrtl() routine is available.
3896
3897 "d_srand48_r"
3898 From d_srand48_r.U:
3899
3900 This variable conditionally defines the HAS_SRAND48_R symbol, which
3901 indicates to the C program that the srand48_r() routine is
3902 available.
3903
3904 "d_srandom_r"
3905 From d_srandom_r.U:
3906
3907 This variable conditionally defines the "HAS_SRANDOM_R" symbol,
3908 which indicates to the C program that the srandom_r() routine is
3909 available.
3910
3911 "d_sresgproto"
3912 From d_sresgproto.U:
3913
3914 This variable conditionally defines the "HAS_SETRESGID_PROTO"
3915 symbol, which indicates to the C program that the system provides a
3916 prototype for the setresgid() function. Otherwise, it is up to the
3917 program to supply one.
3918
3919 "d_sresuproto"
3920 From d_sresuproto.U:
3921
3922 This variable conditionally defines the "HAS_SETRESUID_PROTO"
3923 symbol, which indicates to the C program that the system provides a
3924 prototype for the setresuid() function. Otherwise, it is up to the
3925 program to supply one.
3926
3927 "d_stat"
3928 From d_stat.U:
3929
3930 This variable conditionally defines "HAS_STAT" if stat() is
3931 available to get file status.
3932
3933 "d_statblks"
3934 From d_statblks.U:
3935
3936 This variable conditionally defines "USE_STAT_BLOCKS" if this
3937 system has a stat structure declaring st_blksize and st_blocks.
3938
3939 "d_statfs_f_flags"
3940 From d_statfs_f_flags.U:
3941
3942 This variable conditionally defines the "HAS_STRUCT_STATFS_F_FLAGS"
3943 symbol, which indicates to struct statfs from has f_flags member.
3944 This kind of struct statfs is coming from sys/mount.h ("BSD"), not
3945 from sys/statfs.h ("SYSV").
3946
3947 "d_statfs_s"
3948 From d_statfs_s.U:
3949
3950 This variable conditionally defines the "HAS_STRUCT_STATFS" symbol,
3951 which indicates that the struct statfs is supported.
3952
3953 "d_static_inline"
3954 From d_static_inline.U:
3955
3956 This variable conditionally defines the "HAS_STATIC_INLINE" symbol,
3957 which indicates that the C compiler supports C99-style static
3958 inline. That is, the function can't be called from another
3959 translation unit.
3960
3961 "d_statvfs"
3962 From d_statvfs.U:
3963
3964 This variable conditionally defines the "HAS_STATVFS" symbol, which
3965 indicates to the C program that the statvfs() routine is available.
3966
3967 "d_stdio_cnt_lval"
3968 From d_stdstdio.U:
3969
3970 This variable conditionally defines "STDIO_CNT_LVALUE" if the
3971 "FILE_cnt" macro can be used as an lvalue.
3972
3973 "d_stdio_ptr_lval"
3974 From d_stdstdio.U:
3975
3976 This variable conditionally defines "STDIO_PTR_LVALUE" if the
3977 "FILE_ptr" macro can be used as an lvalue.
3978
3979 "d_stdio_ptr_lval_nochange_cnt"
3980 From d_stdstdio.U:
3981
3982 This symbol is defined if using the "FILE_ptr" macro as an lvalue
3983 to increase the pointer by n leaves File_cnt(fp) unchanged.
3984
3985 "d_stdio_ptr_lval_sets_cnt"
3986 From d_stdstdio.U:
3987
3988 This symbol is defined if using the "FILE_ptr" macro as an lvalue
3989 to increase the pointer by n has the side effect of decreasing the
3990 value of File_cnt(fp) by n.
3991
3992 "d_stdio_stream_array"
3993 From stdio_streams.U:
3994
3995 This variable tells whether there is an array holding the stdio
3996 streams.
3997
3998 "d_stdiobase"
3999 From d_stdstdio.U:
4000
4001 This variable conditionally defines "USE_STDIO_BASE" if this system
4002 has a "FILE" structure declaring a usable _base field (or
4003 equivalent) in stdio.h.
4004
4005 "d_stdstdio"
4006 From d_stdstdio.U:
4007
4008 This variable conditionally defines "USE_STDIO_PTR" if this system
4009 has a "FILE" structure declaring usable _ptr and _cnt fields (or
4010 equivalent) in stdio.h.
4011
4012 "d_strcoll"
4013 From d_strcoll.U:
4014
4015 This variable conditionally defines "HAS_STRCOLL" if strcoll() is
4016 available to compare strings using collating information.
4017
4018 "d_strerror_l"
4019 From d_strerror_l.U:
4020
4021 This variable conditionally defines the "HAS_STRERROR_L" symbol,
4022 which indicates to the C program that the strerror_l() routine is
4023 available to return the error message for a given errno value in a
4024 particular locale (identified by a locale_t object).
4025
4026 "d_strerror_r"
4027 From d_strerror_r.U:
4028
4029 This variable conditionally defines the "HAS_STRERROR_R" symbol,
4030 which indicates to the C program that the strerror_r() routine is
4031 available.
4032
4033 "d_strftime"
4034 From d_strftime.U:
4035
4036 This variable conditionally defines the "HAS_STRFTIME" symbol,
4037 which indicates to the C program that the strftime() routine is
4038 available.
4039
4040 "d_strlcat"
4041 From d_strlcat.U:
4042
4043 This variable conditionally defines the "HAS_STRLCAT" symbol, which
4044 indicates to the C program that the strlcat () routine is
4045 available.
4046
4047 "d_strlcpy"
4048 From d_strlcpy.U:
4049
4050 This variable conditionally defines the "HAS_STRLCPY" symbol, which
4051 indicates to the C program that the strlcpy () routine is
4052 available.
4053
4054 "d_strnlen"
4055 From d_strnlen.U:
4056
4057 This variable conditionally defines the "HAS_STRNLEN" symbol, which
4058 indicates to the C program that the strnlen () routine is
4059 available.
4060
4061 "d_strtod"
4062 From d_strtod.U:
4063
4064 This variable conditionally defines the "HAS_STRTOD" symbol, which
4065 indicates to the C program that the strtod() routine is available
4066 to provide better numeric string conversion than atof().
4067
4068 "d_strtod_l"
4069 From d_strtod_l.U:
4070
4071 This variable conditionally defines the "HAS_STRTOD_L" symbol,
4072 which indicates to the C program that the strtod_l() routine is
4073 available.
4074
4075 "d_strtol"
4076 From d_strtol.U:
4077
4078 This variable conditionally defines the "HAS_STRTOL" symbol, which
4079 indicates to the C program that the strtol() routine is available
4080 to provide better numeric string conversion than atoi() and
4081 friends.
4082
4083 "d_strtold"
4084 From d_strtold.U:
4085
4086 This variable conditionally defines the "HAS_STRTOLD" symbol, which
4087 indicates to the C program that the strtold() routine is available.
4088
4089 "d_strtold_l"
4090 From d_strtold_l.U:
4091
4092 This variable conditionally defines the "HAS_STRTOLD_L" symbol,
4093 which indicates to the C program that the strtold_l() routine is
4094 available.
4095
4096 "d_strtoll"
4097 From d_strtoll.U:
4098
4099 This variable conditionally defines the "HAS_STRTOLL" symbol, which
4100 indicates to the C program that the strtoll() routine is available.
4101
4102 "d_strtoq"
4103 From d_strtoq.U:
4104
4105 This variable conditionally defines the "HAS_STRTOQ" symbol, which
4106 indicates to the C program that the strtoq() routine is available.
4107
4108 "d_strtoul"
4109 From d_strtoul.U:
4110
4111 This variable conditionally defines the "HAS_STRTOUL" symbol, which
4112 indicates to the C program that the strtoul() routine is available
4113 to provide conversion of strings to unsigned long.
4114
4115 "d_strtoull"
4116 From d_strtoull.U:
4117
4118 This variable conditionally defines the "HAS_STRTOULL" symbol,
4119 which indicates to the C program that the strtoull() routine is
4120 available.
4121
4122 "d_strtouq"
4123 From d_strtouq.U:
4124
4125 This variable conditionally defines the "HAS_STRTOUQ" symbol, which
4126 indicates to the C program that the strtouq() routine is available.
4127
4128 "d_strxfrm"
4129 From d_strxfrm.U:
4130
4131 This variable conditionally defines "HAS_STRXFRM" if strxfrm() is
4132 available to transform strings.
4133
4134 "d_strxfrm_l"
4135 From d_strxfrm_l.U:
4136
4137 This variable conditionally defines "HAS_STRXFRM_L" if strxfrm_l()
4138 is available to transform strings.
4139
4140 "d_suidsafe"
4141 From d_dosuid.U:
4142
4143 This variable conditionally defines "SETUID_SCRIPTS_ARE_SECURE_NOW"
4144 if setuid scripts can be secure. This test looks in /dev/fd/.
4145
4146 "d_symlink"
4147 From d_symlink.U:
4148
4149 This variable conditionally defines the "HAS_SYMLINK" symbol, which
4150 indicates to the C program that the symlink() routine is available
4151 to create symbolic links.
4152
4153 "d_syscall"
4154 From d_syscall.U:
4155
4156 This variable conditionally defines "HAS_SYSCALL" if syscall() is
4157 available call arbitrary system calls.
4158
4159 "d_syscallproto"
4160 From d_syscallproto.U:
4161
4162 This variable conditionally defines the "HAS_SYSCALL_PROTO" symbol,
4163 which indicates to the C program that the system provides a
4164 prototype for the syscall() function. Otherwise, it is up to the
4165 program to supply one.
4166
4167 "d_sysconf"
4168 From d_sysconf.U:
4169
4170 This variable conditionally defines the "HAS_SYSCONF" symbol, which
4171 indicates to the C program that the sysconf() routine is available
4172 to determine system related limits and options.
4173
4174 "d_sysernlst"
4175 From d_strerror.U:
4176
4177 This variable conditionally defines "HAS_SYS_ERRNOLIST" if
4178 sys_errnolist[] is available to translate error numbers to the
4179 symbolic name.
4180
4181 "d_syserrlst"
4182 From d_strerror.U:
4183
4184 This variable conditionally defines "HAS_SYS_ERRLIST" if
4185 sys_errlist[] is available to translate error numbers to strings.
4186
4187 "d_system"
4188 From d_system.U:
4189
4190 This variable conditionally defines "HAS_SYSTEM" if system() is
4191 available to issue a shell command.
4192
4193 "d_tcgetpgrp"
4194 From d_tcgtpgrp.U:
4195
4196 This variable conditionally defines the "HAS_TCGETPGRP" symbol,
4197 which indicates to the C program that the tcgetpgrp() routine is
4198 available. to get foreground process group "ID".
4199
4200 "d_tcsetpgrp"
4201 From d_tcstpgrp.U:
4202
4203 This variable conditionally defines the "HAS_TCSETPGRP" symbol,
4204 which indicates to the C program that the tcsetpgrp() routine is
4205 available to set foreground process group "ID".
4206
4207 "d_telldir"
4208 From d_readdir.U:
4209
4210 This variable conditionally defines "HAS_TELLDIR" if telldir() is
4211 available.
4212
4213 "d_telldirproto"
4214 From d_telldirproto.U:
4215
4216 This variable conditionally defines the "HAS_TELLDIR_PROTO" symbol,
4217 which indicates to the C program that the system provides a
4218 prototype for the telldir() function. Otherwise, it is up to the
4219 program to supply one.
4220
4221 "d_tgamma"
4222 From d_tgamma.U:
4223
4224 This variable conditionally defines the "HAS_TGAMMA" symbol, which
4225 indicates to the C program that the tgamma() routine is available
4226 for the gamma function. See also d_lgamma.
4227
4228 "d_thread_local"
4229 From d_thread_local.U:
4230
4231 This variable conditionally defines the "PERL_THREAD_LOCAL" symbol.
4232 In turn that gives a linkage specification for thread-local
4233 storage.
4234
4235 "d_thread_safe_nl_langinfo_l"
4236 From d_nl_langinfo_l.U:
4237
4238 This variable contains the eventual value of the
4239 "HAS_THREAD_SAFE_NL_LANGINFO_L" symbol, which indicates if the
4240 nl_langinfo_l() function exists and is thread-safe.
4241
4242 "d_time"
4243 From d_time.U:
4244
4245 This variable conditionally defines the "HAS_TIME" symbol, which
4246 indicates that the time() routine exists. The time() routine is
4247 normally provided on "UNIX" systems.
4248
4249 "d_timegm"
4250 From d_timegm.U:
4251
4252 This variable conditionally defines the "HAS_TIMEGM" symbol, which
4253 indicates to the C program that the timegm () routine is available.
4254
4255 "d_times"
4256 From d_times.U:
4257
4258 This variable conditionally defines the "HAS_TIMES" symbol, which
4259 indicates that the times() routine exists. The times() routine is
4260 normally provided on "UNIX" systems. You may have to include
4261 <sys/times.h>.
4262
4263 "d_tm_tm_gmtoff"
4264 From i_time.U:
4265
4266 This variable conditionally defines "HAS_TM_TM_GMTOFF", which
4267 indicates to the C program that the struct tm has the tm_gmtoff
4268 field.
4269
4270 "d_tm_tm_zone"
4271 From i_time.U:
4272
4273 This variable conditionally defines "HAS_TM_TM_ZONE", which
4274 indicates to the C program that the struct tm has the tm_zone
4275 field.
4276
4277 "d_tmpnam_r"
4278 From d_tmpnam_r.U:
4279
4280 This variable conditionally defines the "HAS_TMPNAM_R" symbol,
4281 which indicates to the C program that the tmpnam_r() routine is
4282 available.
4283
4284 "d_towlower"
4285 From d_towlower.U:
4286
4287 This variable conditionally defines the "HAS_TOWLOWER" symbol,
4288 which indicates to the C program that the towlower() routine is
4289 available.
4290
4291 "d_towupper"
4292 From d_towupper.U:
4293
4294 This variable conditionally defines the "HAS_TOWUPPER" symbol,
4295 which indicates to the C program that the towupper() routine is
4296 available.
4297
4298 "d_trunc"
4299 From d_trunc.U:
4300
4301 This variable conditionally defines the "HAS_TRUNC" symbol, which
4302 indicates to the C program that the trunc() routine is available to
4303 round doubles towards zero.
4304
4305 "d_truncate"
4306 From d_truncate.U:
4307
4308 This variable conditionally defines "HAS_TRUNCATE" if truncate() is
4309 available to truncate files.
4310
4311 "d_truncl"
4312 From d_truncl.U:
4313
4314 This variable conditionally defines the "HAS_TRUNCL" symbol, which
4315 indicates to the C program that the truncl() routine is available
4316 to round long doubles towards zero. If copysignl is also present,
4317 we can emulate modfl.
4318
4319 "d_ttyname_r"
4320 From d_ttyname_r.U:
4321
4322 This variable conditionally defines the "HAS_TTYNAME_R" symbol,
4323 which indicates to the C program that the ttyname_r() routine is
4324 available.
4325
4326 "d_tzname"
4327 From d_tzname.U:
4328
4329 This variable conditionally defines "HAS_TZNAME" if tzname[] is
4330 available to access timezone names.
4331
4332 "d_u32align"
4333 From d_u32align.U:
4334
4335 This variable tells whether you must access character data through
4336 U32-aligned pointers.
4337
4338 "d_ualarm"
4339 From d_ualarm.U:
4340
4341 This variable conditionally defines the "HAS_UALARM" symbol, which
4342 indicates to the C program that the ualarm() routine is available.
4343
4344 "d_umask"
4345 From d_umask.U:
4346
4347 This variable conditionally defines the "HAS_UMASK" symbol, which
4348 indicates to the C program that the umask() routine is available.
4349 to set and get the value of the file creation mask.
4350
4351 "d_uname"
4352 From d_gethname.U:
4353
4354 This variable conditionally defines the "HAS_UNAME" symbol, which
4355 indicates to the C program that the uname() routine may be used to
4356 derive the host name.
4357
4358 "d_union_semun"
4359 From d_union_semun.U:
4360
4361 This variable conditionally defines "HAS_UNION_SEMUN" if the union
4362 semun is defined by including <sys/sem.h>.
4363
4364 "d_unlinkat"
4365 From d_fsat.U:
4366
4367 This variable conditionally defines the "HAS_UNLINKAT" symbol,
4368 which indicates the "POSIX" unlinkat() function isavailable.
4369
4370 "d_unordered"
4371 From d_unordered.U:
4372
4373 This variable conditionally defines the "HAS_UNORDERED" symbol,
4374 which indicates to the C program that the unordered() routine is
4375 available.
4376
4377 "d_unsetenv"
4378 From d_unsetenv.U:
4379
4380 This variable conditionally defines the "HAS_UNSETENV" symbol,
4381 which indicates to the C program that the unsetenv () routine is
4382 available.
4383
4384 "d_uselocale"
4385 From d_newlocale.U:
4386
4387 This variable conditionally defines the "HAS_USELOCALE" symbol,
4388 which indicates to the C program that the uselocale() routine is
4389 available to set the current locale for the calling thread.
4390
4391 "d_usleep"
4392 From d_usleep.U:
4393
4394 This variable conditionally defines "HAS_USLEEP" if usleep() is
4395 available to do high granularity sleeps.
4396
4397 "d_usleepproto"
4398 From d_usleepproto.U:
4399
4400 This variable conditionally defines the "HAS_USLEEP_PROTO" symbol,
4401 which indicates to the C program that the system provides a
4402 prototype for the usleep() function. Otherwise, it is up to the
4403 program to supply one.
4404
4405 "d_ustat"
4406 From d_ustat.U:
4407
4408 This variable conditionally defines "HAS_USTAT" if ustat() is
4409 available to query file system statistics by dev_t.
4410
4411 "d_vendorarch"
4412 From vendorarch.U:
4413
4414 This variable conditionally defined "PERL_VENDORARCH".
4415
4416 "d_vendorbin"
4417 From vendorbin.U:
4418
4419 This variable conditionally defines "PERL_VENDORBIN".
4420
4421 "d_vendorlib"
4422 From vendorlib.U:
4423
4424 This variable conditionally defines "PERL_VENDORLIB".
4425
4426 "d_vendorscript"
4427 From vendorscript.U:
4428
4429 This variable conditionally defines "PERL_VENDORSCRIPT".
4430
4431 "d_vfork"
4432 From d_vfork.U:
4433
4434 This variable conditionally defines the "HAS_VFORK" symbol, which
4435 indicates the vfork() routine is available.
4436
4437 "d_void_closedir"
4438 From d_closedir.U:
4439
4440 This variable conditionally defines "VOID_CLOSEDIR" if closedir()
4441 does not return a value.
4442
4443 "d_voidsig"
4444 From d_voidsig.U:
4445
4446 This variable conditionally defines "VOIDSIG" if this system
4447 declares "void (*signal(...))()" in signal.h. The old way was to
4448 declare it as "int (*signal(...))()".
4449
4450 "d_voidtty"
4451 From i_sysioctl.U:
4452
4453 This variable conditionally defines "USE_IOCNOTTY" to indicate that
4454 the ioctl() call with "TIOCNOTTY" should be used to void tty
4455 association. Otherwise (on "USG" probably), it is enough to close
4456 the standard file descriptors and do a setpgrp().
4457
4458 "d_vsnprintf"
4459 From d_snprintf.U:
4460
4461 This variable conditionally defines the "HAS_VSNPRINTF" symbol,
4462 which indicates to the C program that the vsnprintf () library
4463 function is available.
4464
4465 "d_wait4"
4466 From d_wait4.U:
4467
4468 This variable conditionally defines the HAS_WAIT4 symbol, which
4469 indicates the wait4() routine is available.
4470
4471 "d_waitpid"
4472 From d_waitpid.U:
4473
4474 This variable conditionally defines "HAS_WAITPID" if waitpid() is
4475 available to wait for child process.
4476
4477 "d_wcrtomb"
4478 From d_wcrtomb.U:
4479
4480 This variable conditionally defines the "HAS_WCRTOMB" symbol if the
4481 wcrtomb() routine is available to be used to convert a wide
4482 character into a multi-byte character.
4483
4484 "d_wcscmp"
4485 From d_wcscmp.U:
4486
4487 This variable conditionally defines the "HAS_WCSCMP" symbol if the
4488 wcscmp() routine is available and can be used to compare wide
4489 character strings.
4490
4491 "d_wcstombs"
4492 From d_wcstombs.U:
4493
4494 This variable conditionally defines the "HAS_WCSTOMBS" symbol,
4495 which indicates to the C program that the wcstombs() routine is
4496 available to convert wide character strings to multibyte strings.
4497
4498 "d_wcsxfrm"
4499 From d_wcsxfrm.U:
4500
4501 This variable conditionally defines the "HAS_WCSXFRM" symbol if the
4502 wcsxfrm() routine is available and can be used to compare wide
4503 character strings.
4504
4505 "d_wctomb"
4506 From d_wctomb.U:
4507
4508 This variable conditionally defines the "HAS_WCTOMB" symbol, which
4509 indicates to the C program that the wctomb() routine is available
4510 to convert a wide character to a multibyte.
4511
4512 "d_writev"
4513 From d_writev.U:
4514
4515 This variable conditionally defines the "HAS_WRITEV" symbol, which
4516 indicates to the C program that the writev() routine is available.
4517
4518 "d_xenix"
4519 From Guess.U:
4520
4521 This variable conditionally defines the symbol "XENIX", which
4522 alerts the C program that it runs under Xenix.
4523
4524 "date"
4525 From Loc.U:
4526
4527 This variable is used internally by Configure to determine the full
4528 pathname (if any) of the date program. After Configure runs, the
4529 value is reset to a plain "date" and is not useful.
4530
4531 "db_hashtype"
4532 From i_db.U:
4533
4534 This variable contains the type of the hash structure element in
4535 the <db.h> header file. In older versions of "DB", it was int,
4536 while in newer ones it is u_int32_t.
4537
4538 "db_prefixtype"
4539 From i_db.U:
4540
4541 This variable contains the type of the prefix structure element in
4542 the <db.h> header file. In older versions of "DB", it was int,
4543 while in newer ones it is size_t.
4544
4545 "db_version_major"
4546 From i_db.U:
4547
4548 This variable contains the major version number of Berkeley "DB"
4549 found in the <db.h> header file.
4550
4551 "db_version_minor"
4552 From i_db.U:
4553
4554 This variable contains the minor version number of Berkeley "DB"
4555 found in the <db.h> header file. For "DB" version 1 this is always
4556 0.
4557
4558 "db_version_patch"
4559 From i_db.U:
4560
4561 This variable contains the patch version number of Berkeley "DB"
4562 found in the <db.h> header file. For "DB" version 1 this is always
4563 0.
4564
4565 "default_inc_excludes_dot"
4566 From defaultincdot.U:
4567
4568 When defined, remove the legacy . from @"INC"
4569
4570 "direntrytype"
4571 From i_dirent.U:
4572
4573 This symbol is set to "struct direct" or "struct dirent" depending
4574 on whether dirent is available or not. You should use this pseudo
4575 type to portably declare your directory entries.
4576
4577 "dlext"
4578 From dlext.U:
4579
4580 This variable contains the extension that is to be used for the
4581 dynamically loaded modules that perl generates.
4582
4583 "dlsrc"
4584 From dlsrc.U:
4585
4586 This variable contains the name of the dynamic loading file that
4587 will be used with the package.
4588
4589 "doubleinfbytes"
4590 From infnan.U:
4591
4592 This variable contains comma-separated list of hexadecimal bytes
4593 for the double precision infinity.
4594
4595 "doublekind"
4596 From longdblfio.U:
4597
4598 This variable, if defined, encodes the type of a double: 1 = "IEEE"
4599 754 32-bit little endian, 2 = "IEEE" 754 32-bit big endian, 3 =
4600 "IEEE" 754 64-bit little endian, 4 = "IEEE" 754 64-bit big endian,
4601 5 = "IEEE" 754 128-bit little endian, 6 = "IEEE" 754 128-bit big
4602 endian, 7 = "IEEE" 754 64-bit mixed endian le-be, 8 = "IEEE" 754
4603 64-bit mixed endian be-le, 9 = "VAX" 32bit little endian F float
4604 format 10 = "VAX" 64bit little endian D float format 11 = "VAX"
4605 64bit little endian G float format 12 = "IBM" 32bit format 13 =
4606 "IBM" 64bit format 14 = Cray 64bit format -1 = unknown format.
4607
4608 "doublemantbits"
4609 From mantbits.U:
4610
4611 This symbol, if defined, tells how many mantissa bits there are in
4612 double precision floating point format. Note that this is usually
4613 "DBL_MANT_DIG" minus one, since with the standard "IEEE" 754
4614 formats "DBL_MANT_DIG" includes the implicit bit which doesn't
4615 really exist.
4616
4617 "doublenanbytes"
4618 From infnan.U:
4619
4620 This variable contains comma-separated list of hexadecimal bytes
4621 for the double precision not-a-number.
4622
4623 "doublesize"
4624 From doublesize.U:
4625
4626 This variable contains the value of the "DOUBLESIZE" symbol, which
4627 indicates to the C program how many bytes there are in a double.
4628
4629 "drand01"
4630 From randfunc.U:
4631
4632 Indicates the macro to be used to generate normalized random
4633 numbers. Uses randfunc, often divided by (double) (((unsigned
4634 long) 1 << randbits)) in order to normalize the result. In C
4635 programs, the macro "Drand01" is mapped to drand01.
4636
4637 "drand48_r_proto"
4638 From d_drand48_r.U:
4639
4640 This variable encodes the prototype of drand48_r. It is zero if
4641 d_drand48_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
4642 of reentr.h if d_drand48_r is defined.
4643
4644 "dtrace"
4645 From usedtrace.U:
4646
4647 This variable holds the location of the dtrace executable.
4648
4649 "dtraceobject"
4650 From dtraceobject.U:
4651
4652 Whether we need to build an object file with the dtrace tool.
4653
4654 "dtracexnolibs"
4655 From dtraceobject.U:
4656
4657 Whether dtrace accepts -xnolibs. If available we call dtrace -h
4658 and dtrace -G with -xnolibs to allow dtrace to run in a jail on
4659 FreeBSD.
4660
4661 "dynamic_ext"
4662 From Extensions.U:
4663
4664 This variable holds a list of "XS" extension files we want to link
4665 dynamically into the package. It is used by Makefile.
4666
4667 e
4668 "eagain"
4669 From nblock_io.U:
4670
4671 This variable bears the symbolic errno code set by read() when no
4672 data is present on the file and non-blocking I/O was enabled
4673 (otherwise, read() blocks naturally).
4674
4675 "ebcdic"
4676 From ebcdic.U:
4677
4678 This variable conditionally defines "EBCDIC" if this system uses
4679 "EBCDIC" encoding.
4680
4681 "echo"
4682 From Loc.U:
4683
4684 This variable is used internally by Configure to determine the full
4685 pathname (if any) of the echo program. After Configure runs, the
4686 value is reset to a plain "echo" and is not useful.
4687
4688 "egrep"
4689 From Loc.U:
4690
4691 This variable is used internally by Configure to determine the full
4692 pathname (if any) of the egrep program. After Configure runs, the
4693 value is reset to a plain "egrep" and is not useful.
4694
4695 "emacs"
4696 From Loc.U:
4697
4698 This variable is defined but not used by Configure. The value is
4699 the empty string and is not useful.
4700
4701 "endgrent_r_proto"
4702 From d_endgrent_r.U:
4703
4704 This variable encodes the prototype of endgrent_r. It is zero if
4705 d_endgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4706 macros of reentr.h if d_endgrent_r is defined.
4707
4708 "endhostent_r_proto"
4709 From d_endhostent_r.U:
4710
4711 This variable encodes the prototype of endhostent_r. It is zero if
4712 d_endhostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4713 macros of reentr.h if d_endhostent_r is defined.
4714
4715 "endnetent_r_proto"
4716 From d_endnetent_r.U:
4717
4718 This variable encodes the prototype of endnetent_r. It is zero if
4719 d_endnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4720 macros of reentr.h if d_endnetent_r is defined.
4721
4722 "endprotoent_r_proto"
4723 From d_endprotoent_r.U:
4724
4725 This variable encodes the prototype of endprotoent_r. It is zero
4726 if d_endprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4727 macros of reentr.h if d_endprotoent_r is defined.
4728
4729 "endpwent_r_proto"
4730 From d_endpwent_r.U:
4731
4732 This variable encodes the prototype of endpwent_r. It is zero if
4733 d_endpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4734 macros of reentr.h if d_endpwent_r is defined.
4735
4736 "endservent_r_proto"
4737 From d_endservent_r.U:
4738
4739 This variable encodes the prototype of endservent_r. It is zero if
4740 d_endservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4741 macros of reentr.h if d_endservent_r is defined.
4742
4743 "eunicefix"
4744 From Init.U:
4745
4746 When running under Eunice this variable contains a command which
4747 will convert a shell script to the proper form of text file for it
4748 to be executable by the shell. On other systems it is a no-op.
4749
4750 "exe_ext"
4751 From Unix.U:
4752
4753 This is an old synonym for _exe.
4754
4755 "expr"
4756 From Loc.U:
4757
4758 This variable is used internally by Configure to determine the full
4759 pathname (if any) of the expr program. After Configure runs, the
4760 value is reset to a plain "expr" and is not useful.
4761
4762 "extensions"
4763 From Extensions.U:
4764
4765 This variable holds a list of all extension files (both "XS" and
4766 non-xs) installed with the package. It is propagated to Config.pm
4767 and is typically used to test whether a particular extension is
4768 available.
4769
4770 "extern_C"
4771 From Csym.U:
4772
4773 "ANSI" C requires "extern" where C++ requires 'extern "C"'. This
4774 variable can be used in Configure to do the right thing.
4775
4776 "extras"
4777 From Extras.U:
4778
4779 This variable holds a list of extra modules to install.
4780
4781 f
4782 "fflushNULL"
4783 From fflushall.U:
4784
4785 This symbol, if defined, tells that fflush("NULL") correctly
4786 flushes all pending stdio output without side effects. In
4787 particular, on some platforms calling fflush("NULL") *still*
4788 corrupts "STDIN" if it is a pipe.
4789
4790 "fflushall"
4791 From fflushall.U:
4792
4793 This symbol, if defined, tells that to flush all pending stdio
4794 output one must loop through all the stdio file handles stored in
4795 an array and fflush them. Note that if fflushNULL is defined,
4796 fflushall will not even be probed for and will be left undefined.
4797
4798 "find"
4799 From Loc.U:
4800
4801 This variable is defined but not used by Configure. The value is
4802 the empty string and is not useful.
4803
4804 "firstmakefile"
4805 From Unix.U:
4806
4807 This variable defines the first file searched by make. On unix, it
4808 is makefile (then Makefile). On case-insensitive systems, it might
4809 be something else. This is only used to deal with convoluted make
4810 depend tricks.
4811
4812 "flex"
4813 From Loc.U:
4814
4815 This variable is defined but not used by Configure. The value is
4816 the empty string and is not useful.
4817
4818 "fpossize"
4819 From fpossize.U:
4820
4821 This variable contains the size of a fpostype in bytes.
4822
4823 "fpostype"
4824 From fpostype.U:
4825
4826 This variable defines Fpos_t to be something like fpos_t, long,
4827 uint, or whatever type is used to declare file positions in libc.
4828
4829 "freetype"
4830 From mallocsrc.U:
4831
4832 This variable contains the return type of free(). It is usually
4833 void, but occasionally int.
4834
4835 "from"
4836 From Cross.U:
4837
4838 This variable contains the command used by Configure to copy files
4839 from the target host. Useful and available only during Perl build.
4840 The string ":" if not cross-compiling.
4841
4842 "full_ar"
4843 From Loc_ar.U:
4844
4845 This variable contains the full pathname to "ar", whether or not
4846 the user has specified "portability". This is only used in the
4847 Makefile.SH.
4848
4849 "full_csh"
4850 From d_csh.U:
4851
4852 This variable contains the full pathname to "csh", whether or not
4853 the user has specified "portability". This is only used in the
4854 compiled C program, and we assume that all systems which can share
4855 this executable will have the same full pathname to csh.
4856
4857 "full_sed"
4858 From Loc_sed.U:
4859
4860 This variable contains the full pathname to "sed", whether or not
4861 the user has specified "portability". This is only used in the
4862 compiled C program, and we assume that all systems which can share
4863 this executable will have the same full pathname to sed.
4864
4865 g
4866 "gccansipedantic"
4867 From gccvers.U:
4868
4869 If "GNU" cc (gcc) is used, this variable will enable (if set) the
4870 -ansi and -pedantic ccflags for building core files (through cflags
4871 script). (See Porting/pumpkin.pod for full description).
4872
4873 "gccosandvers"
4874 From gccvers.U:
4875
4876 If "GNU" cc (gcc) is used, this variable holds the operating system
4877 and version used to compile gcc. It is set to '' if not gcc, or if
4878 nothing useful can be parsed as the os version.
4879
4880 "gccversion"
4881 From gccvers.U:
4882
4883 If "GNU" cc (gcc) is used, this variable holds 1 or 2 to indicate
4884 whether the compiler is version 1 or 2. This is used in setting
4885 some of the default cflags. It is set to '' if not gcc.
4886
4887 "getgrent_r_proto"
4888 From d_getgrent_r.U:
4889
4890 This variable encodes the prototype of getgrent_r. It is zero if
4891 d_getgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4892 macros of reentr.h if d_getgrent_r is defined.
4893
4894 "getgrgid_r_proto"
4895 From d_getgrgid_r.U:
4896
4897 This variable encodes the prototype of getgrgid_r. It is zero if
4898 d_getgrgid_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4899 macros of reentr.h if d_getgrgid_r is defined.
4900
4901 "getgrnam_r_proto"
4902 From d_getgrnam_r.U:
4903
4904 This variable encodes the prototype of getgrnam_r. It is zero if
4905 d_getgrnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4906 macros of reentr.h if d_getgrnam_r is defined.
4907
4908 "gethostbyaddr_r_proto"
4909 From d_gethostbyaddr_r.U:
4910
4911 This variable encodes the prototype of gethostbyaddr_r. It is zero
4912 if d_gethostbyaddr_r is undef, and one of the
4913 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_gethostbyaddr_r is
4914 defined.
4915
4916 "gethostbyname_r_proto"
4917 From d_gethostbyname_r.U:
4918
4919 This variable encodes the prototype of gethostbyname_r. It is zero
4920 if d_gethostbyname_r is undef, and one of the
4921 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_gethostbyname_r is
4922 defined.
4923
4924 "gethostent_r_proto"
4925 From d_gethostent_r.U:
4926
4927 This variable encodes the prototype of gethostent_r. It is zero if
4928 d_gethostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4929 macros of reentr.h if d_gethostent_r is defined.
4930
4931 "getlogin_r_proto"
4932 From d_getlogin_r.U:
4933
4934 This variable encodes the prototype of getlogin_r. It is zero if
4935 d_getlogin_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4936 macros of reentr.h if d_getlogin_r is defined.
4937
4938 "getnetbyaddr_r_proto"
4939 From d_getnetbyaddr_r.U:
4940
4941 This variable encodes the prototype of getnetbyaddr_r. It is zero
4942 if d_getnetbyaddr_r is undef, and one of the
4943 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getnetbyaddr_r is
4944 defined.
4945
4946 "getnetbyname_r_proto"
4947 From d_getnetbyname_r.U:
4948
4949 This variable encodes the prototype of getnetbyname_r. It is zero
4950 if d_getnetbyname_r is undef, and one of the
4951 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getnetbyname_r is
4952 defined.
4953
4954 "getnetent_r_proto"
4955 From d_getnetent_r.U:
4956
4957 This variable encodes the prototype of getnetent_r. It is zero if
4958 d_getnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4959 macros of reentr.h if d_getnetent_r is defined.
4960
4961 "getprotobyname_r_proto"
4962 From d_getprotobyname_r.U:
4963
4964 This variable encodes the prototype of getprotobyname_r. It is
4965 zero if d_getprotobyname_r is undef, and one of the
4966 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getprotobyname_r is
4967 defined.
4968
4969 "getprotobynumber_r_proto"
4970 From d_getprotobynumber_r.U:
4971
4972 This variable encodes the prototype of getprotobynumber_r. It is
4973 zero if d_getprotobynumber_r is undef, and one of the
4974 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getprotobynumber_r
4975 is defined.
4976
4977 "getprotoent_r_proto"
4978 From d_getprotoent_r.U:
4979
4980 This variable encodes the prototype of getprotoent_r. It is zero
4981 if d_getprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4982 macros of reentr.h if d_getprotoent_r is defined.
4983
4984 "getpwent_r_proto"
4985 From d_getpwent_r.U:
4986
4987 This variable encodes the prototype of getpwent_r. It is zero if
4988 d_getpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4989 macros of reentr.h if d_getpwent_r is defined.
4990
4991 "getpwnam_r_proto"
4992 From d_getpwnam_r.U:
4993
4994 This variable encodes the prototype of getpwnam_r. It is zero if
4995 d_getpwnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4996 macros of reentr.h if d_getpwnam_r is defined.
4997
4998 "getpwuid_r_proto"
4999 From d_getpwuid_r.U:
5000
5001 This variable encodes the prototype of getpwuid_r. It is zero if
5002 d_getpwuid_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5003 macros of reentr.h if d_getpwuid_r is defined.
5004
5005 "getservbyname_r_proto"
5006 From d_getservbyname_r.U:
5007
5008 This variable encodes the prototype of getservbyname_r. It is zero
5009 if d_getservbyname_r is undef, and one of the
5010 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getservbyname_r is
5011 defined.
5012
5013 "getservbyport_r_proto"
5014 From d_getservbyport_r.U:
5015
5016 This variable encodes the prototype of getservbyport_r. It is zero
5017 if d_getservbyport_r is undef, and one of the
5018 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getservbyport_r is
5019 defined.
5020
5021 "getservent_r_proto"
5022 From d_getservent_r.U:
5023
5024 This variable encodes the prototype of getservent_r. It is zero if
5025 d_getservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5026 macros of reentr.h if d_getservent_r is defined.
5027
5028 "getspnam_r_proto"
5029 From d_getspnam_r.U:
5030
5031 This variable encodes the prototype of getspnam_r. It is zero if
5032 d_getspnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5033 macros of reentr.h if d_getspnam_r is defined.
5034
5035 "gidformat"
5036 From gidf.U:
5037
5038 This variable contains the format string used for printing a Gid_t.
5039
5040 "gidsign"
5041 From gidsign.U:
5042
5043 This variable contains the signedness of a gidtype. 1 for
5044 unsigned, -1 for signed.
5045
5046 "gidsize"
5047 From gidsize.U:
5048
5049 This variable contains the size of a gidtype in bytes.
5050
5051 "gidtype"
5052 From gidtype.U:
5053
5054 This variable defines Gid_t to be something like gid_t, int,
5055 ushort, or whatever type is used to declare the return type of
5056 getgid(). Typically, it is the type of group ids in the kernel.
5057
5058 "glibpth"
5059 From libpth.U:
5060
5061 This variable holds the general path (space-separated) used to find
5062 libraries. It may contain directories that do not exist on this
5063 platform, libpth is the cleaned-up version.
5064
5065 "gmake"
5066 From Loc.U:
5067
5068 This variable is used internally by Configure to determine the full
5069 pathname (if any) of the gmake program. After Configure runs, the
5070 value is reset to a plain "gmake" and is not useful.
5071
5072 "gmtime_r_proto"
5073 From d_gmtime_r.U:
5074
5075 This variable encodes the prototype of gmtime_r. It is zero if
5076 d_gmtime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
5077 of reentr.h if d_gmtime_r is defined.
5078
5079 "gnulibc_version"
5080 From d_gnulibc.U:
5081
5082 This variable contains the version number of the "GNU" C library.
5083 It is usually something like 2.2.5. It is a plain '' if this is
5084 not the "GNU" C library, or if the version is unknown.
5085
5086 "grep"
5087 From Loc.U:
5088
5089 This variable is used internally by Configure to determine the full
5090 pathname (if any) of the grep program. After Configure runs, the
5091 value is reset to a plain "grep" and is not useful.
5092
5093 "groupcat"
5094 From nis.U:
5095
5096 This variable contains a command that produces the text of the
5097 /etc/group file. This is normally "cat /etc/group", but can be
5098 "ypcat group" when "NIS" is used. On some systems, such as os390,
5099 there may be no equivalent command, in which case this variable is
5100 unset.
5101
5102 "groupstype"
5103 From groupstype.U:
5104
5105 This variable defines Groups_t to be something like gid_t, int,
5106 ushort, or whatever type is used for the second argument to
5107 getgroups() and setgroups(). Usually, this is the same as gidtype
5108 (gid_t), but sometimes it isn't.
5109
5110 "gzip"
5111 From Loc.U:
5112
5113 This variable is used internally by Configure to determine the full
5114 pathname (if any) of the gzip program. After Configure runs, the
5115 value is reset to a plain "gzip" and is not useful.
5116
5117 h
5118 "h_fcntl"
5119 From h_fcntl.U:
5120
5121 This is variable gets set in various places to tell i_fcntl that
5122 <fcntl.h> should be included.
5123
5124 "h_sysfile"
5125 From h_sysfile.U:
5126
5127 This is variable gets set in various places to tell i_sys_file that
5128 <sys/file.h> should be included.
5129
5130 "hint"
5131 From Oldconfig.U:
5132
5133 Gives the type of hints used for previous answers. May be one of
5134 "default", "recommended" or "previous".
5135
5136 "hostcat"
5137 From nis.U:
5138
5139 This variable contains a command that produces the text of the
5140 /etc/hosts file. This is normally "cat /etc/hosts", but can be
5141 "ypcat hosts" when "NIS" is used. On some systems, such as os390,
5142 there may be no equivalent command, in which case this variable is
5143 unset.
5144
5145 "hostgenerate"
5146 From Cross.U:
5147
5148 This variable contains the path to a generate_uudmap binary that
5149 can be run on the host "OS" when cross-compiling. Useful and
5150 available only during Perl build. Empty string '' if not cross-
5151 compiling.
5152
5153 "hostosname"
5154 From Cross.U:
5155
5156 This variable contains the original value of $^O for hostperl when
5157 cross-compiling. This is useful to pick the proper tools when
5158 running build code in the host. Empty string '' if not cross-
5159 compiling.
5160
5161 "hostperl"
5162 From Cross.U:
5163
5164 This variable contains the path to a miniperl binary that can be
5165 run on the host "OS" when cross-compiling. Useful and available
5166 only during Perl build. Empty string '' if not cross-compiling.
5167
5168 "html1dir"
5169 From html1dir.U:
5170
5171 This variable contains the name of the directory in which html
5172 source pages are to be put. This directory is for pages that
5173 describe whole programs, not libraries or modules. It is intended
5174 to correspond roughly to section 1 of the Unix manuals.
5175
5176 "html1direxp"
5177 From html1dir.U:
5178
5179 This variable is the same as the html1dir variable, but is filename
5180 expanded at configuration time, for convenient use in makefiles.
5181
5182 "html3dir"
5183 From html3dir.U:
5184
5185 This variable contains the name of the directory in which html
5186 source pages are to be put. This directory is for pages that
5187 describe libraries or modules. It is intended to correspond
5188 roughly to section 3 of the Unix manuals.
5189
5190 "html3direxp"
5191 From html3dir.U:
5192
5193 This variable is the same as the html3dir variable, but is filename
5194 expanded at configuration time, for convenient use in makefiles.
5195
5196 i
5197 "i16size"
5198 From perlxv.U:
5199
5200 This variable is the size of an I16 in bytes.
5201
5202 "i16type"
5203 From perlxv.U:
5204
5205 This variable contains the C type used for Perl's I16.
5206
5207 "i32dformat"
5208 From perlx32f.U:
5209
5210 This variable contains the format string used for printing a Perl
5211 I32 as a signed decimal integer.
5212
5213 "i32size"
5214 From perlxv.U:
5215
5216 This variable is the size of an I32 in bytes.
5217
5218 "i32type"
5219 From perlxv.U:
5220
5221 This variable contains the C type used for Perl's I32.
5222
5223 "i64size"
5224 From perlxv.U:
5225
5226 This variable is the size of an I64 in bytes.
5227
5228 "i64type"
5229 From perlxv.U:
5230
5231 This variable contains the C type used for Perl's I64.
5232
5233 "i8size"
5234 From perlxv.U:
5235
5236 This variable is the size of an I8 in bytes.
5237
5238 "i8type"
5239 From perlxv.U:
5240
5241 This variable contains the C type used for Perl's I8.
5242
5243 "i_arpainet"
5244 From i_arpainet.U:
5245
5246 This variable conditionally defines the "I_ARPA_INET" symbol, and
5247 indicates whether a C program should include <arpa/inet.h>.
5248
5249 "i_bfd"
5250 From i_bfd.U:
5251
5252 This variable conditionally defines the "I_BFD" symbol, and
5253 indicates whether a C program can include <bfd.h>.
5254
5255 "i_bsdioctl"
5256 From i_sysioctl.U:
5257
5258 This variable conditionally defines the "I_SYS_BSDIOCTL" symbol,
5259 which indicates to the C program that <sys/bsdioctl.h> exists and
5260 should be included.
5261
5262 "i_crypt"
5263 From i_crypt.U:
5264
5265 This variable conditionally defines the "I_CRYPT" symbol, and
5266 indicates whether a C program should include <crypt.h>.
5267
5268 "i_db"
5269 From i_db.U:
5270
5271 This variable conditionally defines the "I_DB" symbol, and
5272 indicates whether a C program may include Berkeley's "DB" include
5273 file <db.h>.
5274
5275 "i_dbm"
5276 From i_dbm.U:
5277
5278 This variable conditionally defines the "I_DBM" symbol, which
5279 indicates to the C program that <dbm.h> exists and should be
5280 included.
5281
5282 "i_dirent"
5283 From i_dirent.U:
5284
5285 This variable conditionally defines "I_DIRENT", which indicates to
5286 the C program that it should include <dirent.h>.
5287
5288 "i_dlfcn"
5289 From i_dlfcn.U:
5290
5291 This variable conditionally defines the "I_DLFCN" symbol, which
5292 indicates to the C program that <dlfcn.h> exists and should be
5293 included.
5294
5295 "i_execinfo"
5296 From i_execinfo.U:
5297
5298 This variable conditionally defines the "I_EXECINFO" symbol, and
5299 indicates whether a C program may include <execinfo.h>, for
5300 backtrace() support.
5301
5302 "i_fcntl"
5303 From i_fcntl.U:
5304
5305 This variable controls the value of "I_FCNTL" (which tells the C
5306 program to include <fcntl.h>).
5307
5308 "i_fenv"
5309 From i_fenv.U:
5310
5311 This variable conditionally defines the "I_FENV" symbol, which
5312 indicates to the C program that <fenv.h> exists and should be
5313 included.
5314
5315 "i_fp"
5316 From i_fp.U:
5317
5318 This variable conditionally defines the "I_FP" symbol, and
5319 indicates whether a C program should include <fp.h>.
5320
5321 "i_fp_class"
5322 From i_fp_class.U:
5323
5324 This variable conditionally defines the "I_FP_CLASS" symbol, and
5325 indicates whether a C program should include <fp_class.h>.
5326
5327 "i_gdbm"
5328 From i_gdbm.U:
5329
5330 This variable conditionally defines the "I_GDBM" symbol, which
5331 indicates to the C program that <gdbm.h> exists and should be
5332 included.
5333
5334 "i_gdbm_ndbm"
5335 From i_ndbm.U:
5336
5337 This variable conditionally defines the "I_GDBM_NDBM" symbol, which
5338 indicates to the C program that <gdbm-ndbm.h> exists and should be
5339 included. This is the location of the ndbm.h compatibility file in
5340 Debian 4.0.
5341
5342 "i_gdbmndbm"
5343 From i_ndbm.U:
5344
5345 This variable conditionally defines the "I_GDBMNDBM" symbol, which
5346 indicates to the C program that <gdbm/ndbm.h> exists and should be
5347 included. This was the location of the ndbm.h compatibility file
5348 in RedHat 7.1.
5349
5350 "i_grp"
5351 From i_grp.U:
5352
5353 This variable conditionally defines the "I_GRP" symbol, and
5354 indicates whether a C program should include <grp.h>.
5355
5356 "i_ieeefp"
5357 From i_ieeefp.U:
5358
5359 This variable conditionally defines the "I_IEEEFP" symbol, and
5360 indicates whether a C program should include <ieeefp.h>.
5361
5362 "i_inttypes"
5363 From i_inttypes.U:
5364
5365 This variable conditionally defines the "I_INTTYPES" symbol, and
5366 indicates whether a C program should include <inttypes.h>.
5367
5368 "i_langinfo"
5369 From i_langinfo.U:
5370
5371 This variable conditionally defines the "I_LANGINFO" symbol, and
5372 indicates whether a C program should include <langinfo.h>.
5373
5374 "i_libutil"
5375 From i_libutil.U:
5376
5377 This variable conditionally defines the "I_LIBUTIL" symbol, and
5378 indicates whether a C program should include <libutil.h>.
5379
5380 "i_locale"
5381 From i_locale.U:
5382
5383 This variable conditionally defines the "I_LOCALE" symbol, and
5384 indicates whether a C program should include <locale.h>.
5385
5386 "i_machcthr"
5387 From i_machcthr.U:
5388
5389 This variable conditionally defines the "I_MACH_CTHREADS" symbol,
5390 and indicates whether a C program should include <mach/cthreads.h>.
5391
5392 "i_malloc"
5393 From i_malloc.U:
5394
5395 This variable conditionally defines the "I_MALLOC" symbol, and
5396 indicates whether a C program should include <malloc.h>.
5397
5398 "i_mallocmalloc"
5399 From i_mallocmalloc.U:
5400
5401 This variable conditionally defines the "I_MALLOCMALLOC" symbol,
5402 and indicates whether a C program should include <malloc/malloc.h>.
5403
5404 "i_mntent"
5405 From i_mntent.U:
5406
5407 This variable conditionally defines the "I_MNTENT" symbol, and
5408 indicates whether a C program should include <mntent.h>.
5409
5410 "i_ndbm"
5411 From i_ndbm.U:
5412
5413 This variable conditionally defines the "I_NDBM" symbol, which
5414 indicates to the C program that <ndbm.h> exists and should be
5415 included.
5416
5417 "i_netdb"
5418 From i_netdb.U:
5419
5420 This variable conditionally defines the "I_NETDB" symbol, and
5421 indicates whether a C program should include <netdb.h>.
5422
5423 "i_neterrno"
5424 From i_neterrno.U:
5425
5426 This variable conditionally defines the "I_NET_ERRNO" symbol, which
5427 indicates to the C program that <net/errno.h> exists and should be
5428 included.
5429
5430 "i_netinettcp"
5431 From i_netinettcp.U:
5432
5433 This variable conditionally defines the "I_NETINET_TCP" symbol, and
5434 indicates whether a C program should include <netinet/tcp.h>.
5435
5436 "i_niin"
5437 From i_niin.U:
5438
5439 This variable conditionally defines "I_NETINET_IN", which indicates
5440 to the C program that it should include <netinet/in.h>. Otherwise,
5441 you may try <sys/in.h>.
5442
5443 "i_poll"
5444 From i_poll.U:
5445
5446 This variable conditionally defines the "I_POLL" symbol, and
5447 indicates whether a C program should include <poll.h>.
5448
5449 "i_prot"
5450 From i_prot.U:
5451
5452 This variable conditionally defines the "I_PROT" symbol, and
5453 indicates whether a C program should include <prot.h>.
5454
5455 "i_pthread"
5456 From i_pthread.U:
5457
5458 This variable conditionally defines the "I_PTHREAD" symbol, and
5459 indicates whether a C program should include <pthread.h>.
5460
5461 "i_pwd"
5462 From i_pwd.U:
5463
5464 This variable conditionally defines "I_PWD", which indicates to the
5465 C program that it should include <pwd.h>.
5466
5467 "i_quadmath"
5468 From i_quadmath.U:
5469
5470 This variable conditionally defines "I_QUADMATH", which indicates
5471 to the C program that it should include <quadmath.h>.
5472
5473 "i_rpcsvcdbm"
5474 From i_dbm.U:
5475
5476 This variable conditionally defines the "I_RPCSVC_DBM" symbol,
5477 which indicates to the C program that <rpcsvc/dbm.h> exists and
5478 should be included. Some System V systems might need this instead
5479 of <dbm.h>.
5480
5481 "i_sgtty"
5482 From i_termio.U:
5483
5484 This variable conditionally defines the "I_SGTTY" symbol, which
5485 indicates to the C program that it should include <sgtty.h> rather
5486 than <termio.h>.
5487
5488 "i_shadow"
5489 From i_shadow.U:
5490
5491 This variable conditionally defines the "I_SHADOW" symbol, and
5492 indicates whether a C program should include <shadow.h>.
5493
5494 "i_socks"
5495 From i_socks.U:
5496
5497 This variable conditionally defines the "I_SOCKS" symbol, and
5498 indicates whether a C program should include <socks.h>.
5499
5500 "i_stdbool"
5501 From i_stdbool.U:
5502
5503 This variable conditionally defines the "I_STDBOOL" symbol, which
5504 indicates to the C program that <stdbool.h> exists and should be
5505 included.
5506
5507 "i_stdint"
5508 From i_stdint.U:
5509
5510 This variable conditionally defines the "I_STDINT" symbol, which
5511 indicates to the C program that <stdint.h> exists and should be
5512 included.
5513
5514 "i_stdlib"
5515 From i_stdlib.U:
5516
5517 This variable unconditionally defines the "I_STDLIB" symbol.
5518
5519 "i_sunmath"
5520 From i_sunmath.U:
5521
5522 This variable conditionally defines the "I_SUNMATH" symbol, and
5523 indicates whether a C program should include <sunmath.h>.
5524
5525 "i_sysaccess"
5526 From i_sysaccess.U:
5527
5528 This variable conditionally defines the "I_SYS_ACCESS" symbol, and
5529 indicates whether a C program should include <sys/access.h>.
5530
5531 "i_sysdir"
5532 From i_sysdir.U:
5533
5534 This variable conditionally defines the "I_SYS_DIR" symbol, and
5535 indicates whether a C program should include <sys/dir.h>.
5536
5537 "i_sysfile"
5538 From i_sysfile.U:
5539
5540 This variable conditionally defines the "I_SYS_FILE" symbol, and
5541 indicates whether a C program should include <sys/file.h> to get
5542 "R_OK" and friends.
5543
5544 "i_sysfilio"
5545 From i_sysioctl.U:
5546
5547 This variable conditionally defines the "I_SYS_FILIO" symbol, which
5548 indicates to the C program that <sys/filio.h> exists and should be
5549 included in preference to <sys/ioctl.h>.
5550
5551 "i_sysin"
5552 From i_niin.U:
5553
5554 This variable conditionally defines "I_SYS_IN", which indicates to
5555 the C program that it should include <sys/in.h> instead of
5556 <netinet/in.h>.
5557
5558 "i_sysioctl"
5559 From i_sysioctl.U:
5560
5561 This variable conditionally defines the "I_SYS_IOCTL" symbol, which
5562 indicates to the C program that <sys/ioctl.h> exists and should be
5563 included.
5564
5565 "i_syslog"
5566 From i_syslog.U:
5567
5568 This variable conditionally defines the "I_SYSLOG" symbol, and
5569 indicates whether a C program should include <syslog.h>.
5570
5571 "i_sysmman"
5572 From i_sysmman.U:
5573
5574 This variable conditionally defines the "I_SYS_MMAN" symbol, and
5575 indicates whether a C program should include <sys/mman.h>.
5576
5577 "i_sysmode"
5578 From i_sysmode.U:
5579
5580 This variable conditionally defines the "I_SYSMODE" symbol, and
5581 indicates whether a C program should include <sys/mode.h>.
5582
5583 "i_sysmount"
5584 From i_sysmount.U:
5585
5586 This variable conditionally defines the "I_SYSMOUNT" symbol, and
5587 indicates whether a C program should include <sys/mount.h>.
5588
5589 "i_sysndir"
5590 From i_sysndir.U:
5591
5592 This variable conditionally defines the "I_SYS_NDIR" symbol, and
5593 indicates whether a C program should include <sys/ndir.h>.
5594
5595 "i_sysparam"
5596 From i_sysparam.U:
5597
5598 This variable conditionally defines the "I_SYS_PARAM" symbol, and
5599 indicates whether a C program should include <sys/param.h>.
5600
5601 "i_syspoll"
5602 From i_syspoll.U:
5603
5604 This variable conditionally defines the "I_SYS_POLL" symbol, which
5605 indicates to the C program that it should include <sys/poll.h>.
5606
5607 "i_sysresrc"
5608 From i_sysresrc.U:
5609
5610 This variable conditionally defines the "I_SYS_RESOURCE" symbol,
5611 and indicates whether a C program should include <sys/resource.h>.
5612
5613 "i_syssecrt"
5614 From i_syssecrt.U:
5615
5616 This variable conditionally defines the "I_SYS_SECURITY" symbol,
5617 and indicates whether a C program should include <sys/security.h>.
5618
5619 "i_sysselct"
5620 From i_sysselct.U:
5621
5622 This variable conditionally defines "I_SYS_SELECT", which indicates
5623 to the C program that it should include <sys/select.h> in order to
5624 get the definition of struct timeval.
5625
5626 "i_syssockio"
5627 From i_sysioctl.U:
5628
5629 This variable conditionally defines "I_SYS_SOCKIO" to indicate to
5630 the C program that socket ioctl codes may be found in
5631 <sys/sockio.h> instead of <sys/ioctl.h>.
5632
5633 "i_sysstat"
5634 From i_sysstat.U:
5635
5636 This variable conditionally defines the "I_SYS_STAT" symbol, and
5637 indicates whether a C program should include <sys/stat.h>.
5638
5639 "i_sysstatfs"
5640 From i_sysstatfs.U:
5641
5642 This variable conditionally defines the "I_SYSSTATFS" symbol, and
5643 indicates whether a C program should include <sys/statfs.h>.
5644
5645 "i_sysstatvfs"
5646 From i_sysstatvfs.U:
5647
5648 This variable conditionally defines the "I_SYSSTATVFS" symbol, and
5649 indicates whether a C program should include <sys/statvfs.h>.
5650
5651 "i_syssyscall"
5652 From i_syssyscall.U:
5653
5654 This variable conditionally defines the "I_SYS_SYSCALL" symbol, and
5655 indicates whether a C program should include <sys/syscall.h>.
5656
5657 "i_systime"
5658 From i_time.U:
5659
5660 This variable conditionally defines "I_SYS_TIME", which indicates
5661 to the C program that it should include <sys/time.h>.
5662
5663 "i_systimek"
5664 From i_time.U:
5665
5666 This variable conditionally defines "I_SYS_TIME_KERNEL", which
5667 indicates to the C program that it should include <sys/time.h> with
5668 "KERNEL" defined.
5669
5670 "i_systimes"
5671 From i_systimes.U:
5672
5673 This variable conditionally defines the "I_SYS_TIMES" symbol, and
5674 indicates whether a C program should include <sys/times.h>.
5675
5676 "i_systypes"
5677 From i_systypes.U:
5678
5679 This variable conditionally defines the "I_SYS_TYPES" symbol, and
5680 indicates whether a C program should include <sys/types.h>.
5681
5682 "i_sysuio"
5683 From i_sysuio.U:
5684
5685 This variable conditionally defines the "I_SYSUIO" symbol, and
5686 indicates whether a C program should include <sys/uio.h>.
5687
5688 "i_sysun"
5689 From i_sysun.U:
5690
5691 This variable conditionally defines "I_SYS_UN", which indicates to
5692 the C program that it should include <sys/un.h> to get "UNIX"
5693 domain socket definitions.
5694
5695 "i_sysutsname"
5696 From i_sysutsname.U:
5697
5698 This variable conditionally defines the "I_SYSUTSNAME" symbol, and
5699 indicates whether a C program should include <sys/utsname.h>.
5700
5701 "i_sysvfs"
5702 From i_sysvfs.U:
5703
5704 This variable conditionally defines the "I_SYSVFS" symbol, and
5705 indicates whether a C program should include <sys/vfs.h>.
5706
5707 "i_syswait"
5708 From i_syswait.U:
5709
5710 This variable conditionally defines "I_SYS_WAIT", which indicates
5711 to the C program that it should include <sys/wait.h>.
5712
5713 "i_termio"
5714 From i_termio.U:
5715
5716 This variable conditionally defines the "I_TERMIO" symbol, which
5717 indicates to the C program that it should include <termio.h> rather
5718 than <sgtty.h>.
5719
5720 "i_termios"
5721 From i_termio.U:
5722
5723 This variable conditionally defines the "I_TERMIOS" symbol, which
5724 indicates to the C program that the "POSIX" <termios.h> file is to
5725 be included.
5726
5727 "i_time"
5728 From i_time.U:
5729
5730 This variable unconditionally defines "I_TIME", which indicates to
5731 the C program that it should include <time.h>.
5732
5733 "i_unistd"
5734 From i_unistd.U:
5735
5736 This variable conditionally defines the "I_UNISTD" symbol, and
5737 indicates whether a C program should include <unistd.h>.
5738
5739 "i_ustat"
5740 From i_ustat.U:
5741
5742 This variable conditionally defines the "I_USTAT" symbol, and
5743 indicates whether a C program should include <ustat.h>.
5744
5745 "i_utime"
5746 From i_utime.U:
5747
5748 This variable conditionally defines the "I_UTIME" symbol, and
5749 indicates whether a C program should include <utime.h>.
5750
5751 "i_vfork"
5752 From i_vfork.U:
5753
5754 This variable conditionally defines the "I_VFORK" symbol, and
5755 indicates whether a C program should include vfork.h.
5756
5757 "i_wchar"
5758 From i_wchar.U:
5759
5760 This variable conditionally defines the "I_WCHAR" symbol, that
5761 indicates whether a C program may include <wchar.h>.
5762
5763 "i_wctype"
5764 From i_wctype.U:
5765
5766 This variable conditionally defines the "I_WCTYPE" symbol, that
5767 indicates whether a C program may include <wctype.h>.
5768
5769 "i_xlocale"
5770 From d_newlocale.U:
5771
5772 This symbol, if defined, indicates to the C program that the header
5773 xlocale.h is available. See also xlocale_needed.
5774
5775 "ignore_versioned_solibs"
5776 From libs.U:
5777
5778 This variable should be non-empty if non-versioned shared libraries
5779 (libfoo.so.x.y) are to be ignored (because they cannot be linked
5780 against).
5781
5782 "inc_version_list"
5783 From inc_version_list.U:
5784
5785 This variable specifies the list of subdirectories in over which
5786 perl.c:incpush() and lib/lib.pm will automatically search when
5787 adding directories to @"INC". The elements in the list are
5788 separated by spaces. This is only useful if you have a perl
5789 library directory tree structured like the default one. See
5790 "INSTALL" for how this works. The versioned site_perl directory
5791 was introduced in 5.005, so that is the lowest possible value.
5792
5793 This list includes architecture-dependent directories back to
5794 version $api_versionstring (e.g. 5.5.640) and architecture-
5795 independent directories all the way back to 5.005.
5796
5797 "inc_version_list_init"
5798 From inc_version_list.U:
5799
5800 This variable holds the same list as inc_version_list, but each
5801 item is enclosed in double quotes and separated by commas, suitable
5802 for use in the "PERL_INC_VERSION_LIST" initialization.
5803
5804 "incpath"
5805 From usrinc.U:
5806
5807 This variable must precede the normal include path to get the right
5808 one, as in $incpath/usr/include or $incpath/usr/lib. Value can be
5809 "" or /bsd43 on mips.
5810
5811 "incpth"
5812 From libpth.U:
5813
5814 This variable must precede the normal include path to get the right
5815 one, as in $incpath/usr/include or $incpath/usr/lib. Value can be
5816 "" or /bsd43 on mips.
5817
5818 "inews"
5819 From Loc.U:
5820
5821 This variable is defined but not used by Configure. The value is
5822 the empty string and is not useful.
5823
5824 "initialinstalllocation"
5825 From bin.U:
5826
5827 When userelocatableinc is true, this variable holds the location
5828 that make install should copy the perl binary to, with all the run-
5829 time relocatable paths calculated from this at install time. When
5830 used, it is initialized to the original value of binexp, and then
5831 binexp is set to .../, as the other binaries are found relative to
5832 the perl binary.
5833
5834 "installarchlib"
5835 From archlib.U:
5836
5837 This variable is really the same as archlibexp but may differ on
5838 those systems using "AFS". For extra portability, only this
5839 variable should be used in makefiles.
5840
5841 "installbin"
5842 From bin.U:
5843
5844 This variable is the same as binexp unless "AFS" is running in
5845 which case the user is explicitly prompted for it. This variable
5846 should always be used in your makefiles for maximum portability.
5847
5848 "installhtml1dir"
5849 From html1dir.U:
5850
5851 This variable is really the same as html1direxp, unless you are
5852 using a different installprefix. For extra portability, you should
5853 only use this variable within your makefiles.
5854
5855 "installhtml3dir"
5856 From html3dir.U:
5857
5858 This variable is really the same as html3direxp, unless you are
5859 using a different installprefix. For extra portability, you should
5860 only use this variable within your makefiles.
5861
5862 "installman1dir"
5863 From man1dir.U:
5864
5865 This variable is really the same as man1direxp, unless you are
5866 using "AFS" in which case it points to the read/write location
5867 whereas man1direxp only points to the read-only access location.
5868 For extra portability, you should only use this variable within
5869 your makefiles.
5870
5871 "installman3dir"
5872 From man3dir.U:
5873
5874 This variable is really the same as man3direxp, unless you are
5875 using "AFS" in which case it points to the read/write location
5876 whereas man3direxp only points to the read-only access location.
5877 For extra portability, you should only use this variable within
5878 your makefiles.
5879
5880 "installprefix"
5881 From installprefix.U:
5882
5883 This variable holds the name of the directory below which "make
5884 install" will install the package. For most users, this is the
5885 same as prefix. However, it is useful for installing the software
5886 into a different (usually temporary) location after which it can be
5887 bundled up and moved somehow to the final location specified by
5888 prefix.
5889
5890 "installprefixexp"
5891 From installprefix.U:
5892
5893 This variable holds the full absolute path of installprefix with
5894 all ~-expansion done.
5895
5896 "installprivlib"
5897 From privlib.U:
5898
5899 This variable is really the same as privlibexp but may differ on
5900 those systems using "AFS". For extra portability, only this
5901 variable should be used in makefiles.
5902
5903 "installscript"
5904 From scriptdir.U:
5905
5906 This variable is usually the same as scriptdirexp, unless you are
5907 on a system running "AFS", in which case they may differ slightly.
5908 You should always use this variable within your makefiles for
5909 portability.
5910
5911 "installsitearch"
5912 From sitearch.U:
5913
5914 This variable is really the same as sitearchexp but may differ on
5915 those systems using "AFS". For extra portability, only this
5916 variable should be used in makefiles.
5917
5918 "installsitebin"
5919 From sitebin.U:
5920
5921 This variable is usually the same as sitebinexp, unless you are on
5922 a system running "AFS", in which case they may differ slightly. You
5923 should always use this variable within your makefiles for
5924 portability.
5925
5926 "installsitehtml1dir"
5927 From sitehtml1dir.U:
5928
5929 This variable is really the same as sitehtml1direxp, unless you are
5930 using "AFS" in which case it points to the read/write location
5931 whereas html1direxp only points to the read-only access location.
5932 For extra portability, you should only use this variable within
5933 your makefiles.
5934
5935 "installsitehtml3dir"
5936 From sitehtml3dir.U:
5937
5938 This variable is really the same as sitehtml3direxp, unless you are
5939 using "AFS" in which case it points to the read/write location
5940 whereas html3direxp only points to the read-only access location.
5941 For extra portability, you should only use this variable within
5942 your makefiles.
5943
5944 "installsitelib"
5945 From sitelib.U:
5946
5947 This variable is really the same as sitelibexp but may differ on
5948 those systems using "AFS". For extra portability, only this
5949 variable should be used in makefiles.
5950
5951 "installsiteman1dir"
5952 From siteman1dir.U:
5953
5954 This variable is really the same as siteman1direxp, unless you are
5955 using "AFS" in which case it points to the read/write location
5956 whereas man1direxp only points to the read-only access location.
5957 For extra portability, you should only use this variable within
5958 your makefiles.
5959
5960 "installsiteman3dir"
5961 From siteman3dir.U:
5962
5963 This variable is really the same as siteman3direxp, unless you are
5964 using "AFS" in which case it points to the read/write location
5965 whereas man3direxp only points to the read-only access location.
5966 For extra portability, you should only use this variable within
5967 your makefiles.
5968
5969 "installsitescript"
5970 From sitescript.U:
5971
5972 This variable is usually the same as sitescriptexp, unless you are
5973 on a system running "AFS", in which case they may differ slightly.
5974 You should always use this variable within your makefiles for
5975 portability.
5976
5977 "installstyle"
5978 From installstyle.U:
5979
5980 This variable describes the "style" of the perl installation. This
5981 is intended to be useful for tools that need to manipulate entire
5982 perl distributions. Perl itself doesn't use this to find its
5983 libraries -- the library directories are stored directly in
5984 Config.pm. Currently, there are only two styles: "lib" and
5985 lib/perl5. The default library locations (e.g. privlib, sitelib)
5986 are either $prefix/lib or $prefix/lib/perl5. The former is useful
5987 if $prefix is a directory dedicated to perl (e.g. /opt/perl), while
5988 the latter is useful if $prefix is shared by many packages, e.g. if
5989 $prefix=/usr/local.
5990
5991 Unfortunately, while this "style" variable is used to set defaults
5992 for all three directory hierarchies (core, vendor, and site), there
5993 is no guarantee that the same style is actually appropriate for all
5994 those directories. For example, $prefix might be /opt/perl, but
5995 $siteprefix might be /usr/local. (Perhaps, in retrospect, the
5996 "lib" style should never have been supported, but it did seem like
5997 a nice idea at the time.)
5998
5999 The situation is even less clear for tools such as MakeMaker that
6000 can be used to install additional modules into non-standard places.
6001 For example, if a user intends to install a module into a private
6002 directory (perhaps by setting "PREFIX" on the Makefile.PL command
6003 line), then there is no reason to assume that the Configure-time
6004 $installstyle setting will be relevant for that "PREFIX".
6005
6006 This may later be extended to include other information, so be
6007 careful with pattern-matching on the results.
6008
6009 For compatibility with perl5.005 and earlier, the default setting
6010 is based on whether or not $prefix contains the string "perl".
6011
6012 "installusrbinperl"
6013 From instubperl.U:
6014
6015 This variable tells whether Perl should be installed also as
6016 /usr/bin/perl in addition to $installbin/perl
6017
6018 "installvendorarch"
6019 From vendorarch.U:
6020
6021 This variable is really the same as vendorarchexp but may differ on
6022 those systems using "AFS". For extra portability, only this
6023 variable should be used in makefiles.
6024
6025 "installvendorbin"
6026 From vendorbin.U:
6027
6028 This variable is really the same as vendorbinexp but may differ on
6029 those systems using "AFS". For extra portability, only this
6030 variable should be used in makefiles.
6031
6032 "installvendorhtml1dir"
6033 From vendorhtml1dir.U:
6034
6035 This variable is really the same as vendorhtml1direxp but may
6036 differ on those systems using "AFS". For extra portability, only
6037 this variable should be used in makefiles.
6038
6039 "installvendorhtml3dir"
6040 From vendorhtml3dir.U:
6041
6042 This variable is really the same as vendorhtml3direxp but may
6043 differ on those systems using "AFS". For extra portability, only
6044 this variable should be used in makefiles.
6045
6046 "installvendorlib"
6047 From vendorlib.U:
6048
6049 This variable is really the same as vendorlibexp but may differ on
6050 those systems using "AFS". For extra portability, only this
6051 variable should be used in makefiles.
6052
6053 "installvendorman1dir"
6054 From vendorman1dir.U:
6055
6056 This variable is really the same as vendorman1direxp but may differ
6057 on those systems using "AFS". For extra portability, only this
6058 variable should be used in makefiles.
6059
6060 "installvendorman3dir"
6061 From vendorman3dir.U:
6062
6063 This variable is really the same as vendorman3direxp but may differ
6064 on those systems using "AFS". For extra portability, only this
6065 variable should be used in makefiles.
6066
6067 "installvendorscript"
6068 From vendorscript.U:
6069
6070 This variable is really the same as vendorscriptexp but may differ
6071 on those systems using "AFS". For extra portability, only this
6072 variable should be used in makefiles.
6073
6074 "intsize"
6075 From intsize.U:
6076
6077 This variable contains the value of the "INTSIZE" symbol, which
6078 indicates to the C program how many bytes there are in an int.
6079
6080 "issymlink"
6081 From issymlink.U:
6082
6083 This variable holds the test command to test for a symbolic link
6084 (if they are supported). Typical values include "test -h" and
6085 "test -L".
6086
6087 "ivdformat"
6088 From perlxvf.U:
6089
6090 This variable contains the format string used for printing a Perl
6091 "IV" as a signed decimal integer.
6092
6093 "ivsize"
6094 From perlxv.U:
6095
6096 This variable is the size of an "IV" in bytes.
6097
6098 "ivtype"
6099 From perlxv.U:
6100
6101 This variable contains the C type used for Perl's "IV".
6102
6103 k
6104 "known_extensions"
6105 From Extensions.U:
6106
6107 This variable holds a list of all extensions (both "XS" and non-xs)
6108 included in the package source distribution. This information is
6109 only really of use during the Perl build, as the list makes no
6110 distinction between extensions which were build and installed, and
6111 those which where not. See "extensions" for the list of extensions
6112 actually built and available.
6113
6114 "ksh"
6115 From Loc.U:
6116
6117 This variable is defined but not used by Configure. The value is
6118 the empty string and is not useful.
6119
6120 l
6121 "ld"
6122 From dlsrc.U:
6123
6124 This variable indicates the program to be used to link libraries
6125 for dynamic loading. On some systems, it is "ld". On "ELF"
6126 systems, it should be $cc. Mostly, we'll try to respect the hint
6127 file setting.
6128
6129 "ld_can_script"
6130 From dlsrc.U:
6131
6132 This variable shows if the loader accepts scripts in the form of
6133 -Wl,--version-script=ld.script. This is currently only supported
6134 for "GNU" ld on "ELF" in dynamic loading builds.
6135
6136 "lddlflags"
6137 From dlsrc.U:
6138
6139 This variable contains any special flags that might need to be
6140 passed to $ld to create a shared library suitable for dynamic
6141 loading. It is up to the makefile to use it. For hpux, it should
6142 be "-b". For sunos 4.1, it is empty.
6143
6144 "ldflags"
6145 From ccflags.U:
6146
6147 This variable contains any additional C loader flags desired by the
6148 user. It is up to the Makefile to use this.
6149
6150 "ldflags_uselargefiles"
6151 From uselfs.U:
6152
6153 This variable contains the loader flags needed by large file builds
6154 and added to ldflags by hints files.
6155
6156 "ldlibpthname"
6157 From libperl.U:
6158
6159 This variable holds the name of the shared library search path,
6160 often "LD_LIBRARY_PATH". To get an empty string, the hints file
6161 must set this to "none".
6162
6163 "less"
6164 From Loc.U:
6165
6166 This variable is used internally by Configure to determine the full
6167 pathname (if any) of the less program. After Configure runs, the
6168 value is reset to a plain "less" and is not useful.
6169
6170 "lib_ext"
6171 From Unix.U:
6172
6173 This is an old synonym for _a.
6174
6175 "libc"
6176 From libc.U:
6177
6178 This variable contains the location of the C library.
6179
6180 "libperl"
6181 From libperl.U:
6182
6183 The perl executable is obtained by linking perlmain.c with libperl,
6184 any static extensions (usually just DynaLoader), and any other
6185 libraries needed on this system. libperl is usually libperl.a, but
6186 can also be libperl.so.xxx if the user wishes to build a perl
6187 executable with a shared library.
6188
6189 "libpth"
6190 From libpth.U:
6191
6192 This variable holds the general path (space-separated) used to find
6193 libraries. It is intended to be used by other units.
6194
6195 "libs"
6196 From libs.U:
6197
6198 This variable holds the additional libraries we want to use. It is
6199 up to the Makefile to deal with it. The list can be empty.
6200
6201 "libsdirs"
6202 From libs.U:
6203
6204 This variable holds the directory names aka dirnames of the
6205 libraries we found and accepted, duplicates are removed.
6206
6207 "libsfiles"
6208 From libs.U:
6209
6210 This variable holds the filenames aka basenames of the libraries we
6211 found and accepted.
6212
6213 "libsfound"
6214 From libs.U:
6215
6216 This variable holds the full pathnames of the libraries we found
6217 and accepted.
6218
6219 "libspath"
6220 From libs.U:
6221
6222 This variable holds the directory names probed for libraries.
6223
6224 "libswanted"
6225 From Myinit.U:
6226
6227 This variable holds a list of all the libraries we want to search.
6228 The order is chosen to pick up the c library ahead of ucb or bsd
6229 libraries for SVR4.
6230
6231 "libswanted_uselargefiles"
6232 From uselfs.U:
6233
6234 This variable contains the libraries needed by large file builds
6235 and added to ldflags by hints files. It is a space separated list
6236 of the library names without the "lib" prefix or any suffix, just
6237 like libswanted..
6238
6239 "line"
6240 From Loc.U:
6241
6242 This variable is defined but not used by Configure. The value is
6243 the empty string and is not useful.
6244
6245 "lint"
6246 From Loc.U:
6247
6248 This variable is defined but not used by Configure. The value is
6249 the empty string and is not useful.
6250
6251 "lkflags"
6252 From ccflags.U:
6253
6254 This variable contains any additional C partial linker flags
6255 desired by the user. It is up to the Makefile to use this.
6256
6257 "ln"
6258 From Loc.U:
6259
6260 This variable is used internally by Configure to determine the full
6261 pathname (if any) of the ln program. After Configure runs, the
6262 value is reset to a plain "ln" and is not useful.
6263
6264 "lns"
6265 From lns.U:
6266
6267 This variable holds the name of the command to make symbolic links
6268 (if they are supported). It can be used in the Makefile. It is
6269 either "ln -s" or "ln"
6270
6271 "localtime_r_proto"
6272 From d_localtime_r.U:
6273
6274 This variable encodes the prototype of localtime_r. It is zero if
6275 d_localtime_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6276 macros of reentr.h if d_localtime_r is defined.
6277
6278 "locincpth"
6279 From ccflags.U:
6280
6281 This variable contains a list of additional directories to be
6282 searched by the compiler. The appropriate "-I" directives will be
6283 added to ccflags. This is intended to simplify setting local
6284 directories from the Configure command line. It's not much, but it
6285 parallels the loclibpth stuff in libpth.U.
6286
6287 "loclibpth"
6288 From libpth.U:
6289
6290 This variable holds the paths (space-separated) used to find local
6291 libraries. It is prepended to libpth, and is intended to be easily
6292 set from the command line.
6293
6294 "longdblinfbytes"
6295 From infnan.U:
6296
6297 This variable contains comma-separated list of hexadecimal bytes
6298 for the long double precision infinity.
6299
6300 "longdblkind"
6301 From d_longdbl.U:
6302
6303 This variable, if defined, encodes the type of a long double: 0 =
6304 double, 1 = "IEEE" 754 128-bit little endian, 2 = "IEEE" 754
6305 128-bit big endian, 3 = x86 80-bit little endian, 4 = x86 80-bit
6306 big endian, 5 = double-double 128-bit little endian, 6 = double-
6307 double 128-bit big endian, 7 = 128-bit mixed-endian double-double
6308 (64-bit LEs in "BE"), 8 = 128-bit mixed-endian double-double
6309 (64-bit BEs in "LE"), 9 = 128-bit "PDP"-style mixed-endian long
6310 doubles, -1 = unknown format.
6311
6312 "longdblmantbits"
6313 From mantbits.U:
6314
6315 This symbol, if defined, tells how many mantissa bits there are in
6316 long double precision floating point format. Note that this can be
6317 "LDBL_MANT_DIG" minus one, since "LDBL_MANT_DIG" can include the
6318 "IEEE" 754 implicit bit. The common x86-style 80-bit long double
6319 does not have an implicit bit.
6320
6321 "longdblnanbytes"
6322 From infnan.U:
6323
6324 This variable contains comma-separated list of hexadecimal bytes
6325 for the long double precision not-a-number.
6326
6327 "longdblsize"
6328 From d_longdbl.U:
6329
6330 This variable contains the value of the "LONG_DOUBLESIZE" symbol,
6331 which indicates to the C program how many bytes there are in a long
6332 double, if this system supports long doubles. Note that this is
6333 sizeof(long double), which may include unused bytes.
6334
6335 "longlongsize"
6336 From d_longlong.U:
6337
6338 This variable contains the value of the "LONGLONGSIZE" symbol,
6339 which indicates to the C program how many bytes there are in a long
6340 long, if this system supports long long.
6341
6342 "longsize"
6343 From intsize.U:
6344
6345 This variable contains the value of the "LONGSIZE" symbol, which
6346 indicates to the C program how many bytes there are in a long.
6347
6348 "lp"
6349 From Loc.U:
6350
6351 This variable is defined but not used by Configure. The value is
6352 the empty string and is not useful.
6353
6354 "lpr"
6355 From Loc.U:
6356
6357 This variable is defined but not used by Configure. The value is
6358 the empty string and is not useful.
6359
6360 "ls"
6361 From Loc.U:
6362
6363 This variable is used internally by Configure to determine the full
6364 pathname (if any) of the ls program. After Configure runs, the
6365 value is reset to a plain "ls" and is not useful.
6366
6367 "lseeksize"
6368 From lseektype.U:
6369
6370 This variable defines lseektype to be something like off_t, long,
6371 or whatever type is used to declare lseek offset's type in the
6372 kernel (which also appears to be lseek's return type).
6373
6374 "lseektype"
6375 From lseektype.U:
6376
6377 This variable defines lseektype to be something like off_t, long,
6378 or whatever type is used to declare lseek offset's type in the
6379 kernel (which also appears to be lseek's return type).
6380
6381 m
6382 "mail"
6383 From Loc.U:
6384
6385 This variable is defined but not used by Configure. The value is
6386 the empty string and is not useful.
6387
6388 "mailx"
6389 From Loc.U:
6390
6391 This variable is defined but not used by Configure. The value is
6392 the empty string and is not useful.
6393
6394 "make"
6395 From Loc.U:
6396
6397 This variable is used internally by Configure to determine the full
6398 pathname (if any) of the make program. After Configure runs, the
6399 value is reset to a plain "make" and is not useful.
6400
6401 "make_set_make"
6402 From make.U:
6403
6404 Some versions of "make" set the variable "MAKE". Others do not.
6405 This variable contains the string to be included in Makefile.SH so
6406 that "MAKE" is set if needed, and not if not needed. Possible
6407 values are:
6408
6409 make_set_make="#" # If your make program handles this for
6410 you,
6411
6412 make_set_make="MAKE=$make" # if it doesn't.
6413
6414 This uses a comment character so that we can distinguish a "set"
6415 value (from a previous config.sh or Configure "-D" option) from an
6416 uncomputed value.
6417
6418 "mallocobj"
6419 From mallocsrc.U:
6420
6421 This variable contains the name of the malloc.o that this package
6422 generates, if that malloc.o is preferred over the system malloc.
6423 Otherwise the value is null. This variable is intended for
6424 generating Makefiles. See mallocsrc.
6425
6426 "mallocsrc"
6427 From mallocsrc.U:
6428
6429 This variable contains the name of the malloc.c that comes with the
6430 package, if that malloc.c is preferred over the system malloc.
6431 Otherwise the value is null. This variable is intended for
6432 generating Makefiles.
6433
6434 "malloctype"
6435 From mallocsrc.U:
6436
6437 This variable contains the kind of ptr returned by malloc and
6438 realloc.
6439
6440 "man1dir"
6441 From man1dir.U:
6442
6443 This variable contains the name of the directory in which manual
6444 source pages are to be put. It is the responsibility of the
6445 Makefile.SH to get the value of this into the proper command. You
6446 must be prepared to do the ~name expansion yourself.
6447
6448 "man1direxp"
6449 From man1dir.U:
6450
6451 This variable is the same as the man1dir variable, but is filename
6452 expanded at configuration time, for convenient use in makefiles.
6453
6454 "man1ext"
6455 From man1dir.U:
6456
6457 This variable contains the extension that the manual page should
6458 have: one of "n", "l", or 1. The Makefile must supply the .. See
6459 man1dir.
6460
6461 "man3dir"
6462 From man3dir.U:
6463
6464 This variable contains the name of the directory in which manual
6465 source pages are to be put. It is the responsibility of the
6466 Makefile.SH to get the value of this into the proper command. You
6467 must be prepared to do the ~name expansion yourself.
6468
6469 "man3direxp"
6470 From man3dir.U:
6471
6472 This variable is the same as the man3dir variable, but is filename
6473 expanded at configuration time, for convenient use in makefiles.
6474
6475 "man3ext"
6476 From man3dir.U:
6477
6478 This variable contains the extension that the manual page should
6479 have: one of "n", "l", or 3. The Makefile must supply the .. See
6480 man3dir.
6481
6482 "mips_type"
6483 From usrinc.U:
6484
6485 This variable holds the environment type for the mips system.
6486 Possible values are "BSD 4.3" and "System V".
6487
6488 "mistrustnm"
6489 From Csym.U:
6490
6491 This variable can be used to establish a fallthrough for the cases
6492 where nm fails to find a symbol. If usenm is false or usenm is
6493 true and mistrustnm is false, this variable has no effect. If
6494 usenm is true and mistrustnm is "compile", a test program will be
6495 compiled to try to find any symbol that can't be located via nm
6496 lookup. If mistrustnm is "run", the test program will be run as
6497 well as being compiled.
6498
6499 "mkdir"
6500 From Loc.U:
6501
6502 This variable is used internally by Configure to determine the full
6503 pathname (if any) of the mkdir program. After Configure runs, the
6504 value is reset to a plain "mkdir" and is not useful.
6505
6506 "mmaptype"
6507 From d_mmap.U:
6508
6509 This symbol contains the type of pointer returned by mmap() (and
6510 simultaneously the type of the first argument). It can be "void *"
6511 or "caddr_t".
6512
6513 "modetype"
6514 From modetype.U:
6515
6516 This variable defines modetype to be something like mode_t, int,
6517 unsigned short, or whatever type is used to declare file modes for
6518 system calls.
6519
6520 "more"
6521 From Loc.U:
6522
6523 This variable is used internally by Configure to determine the full
6524 pathname (if any) of the more program. After Configure runs, the
6525 value is reset to a plain "more" and is not useful.
6526
6527 "multiarch"
6528 From multiarch.U:
6529
6530 This variable conditionally defines the "MULTIARCH" symbol which
6531 signifies the presence of multiplatform files. This is normally
6532 set by hints files.
6533
6534 "mv"
6535 From Loc.U:
6536
6537 This variable is defined but not used by Configure. The value is
6538 the empty string and is not useful.
6539
6540 "myarchname"
6541 From archname.U:
6542
6543 This variable holds the architecture name computed by Configure in
6544 a previous run. It is not intended to be perused by any user and
6545 should never be set in a hint file.
6546
6547 "mydomain"
6548 From myhostname.U:
6549
6550 This variable contains the eventual value of the "MYDOMAIN" symbol,
6551 which is the domain of the host the program is going to run on.
6552 The domain must be appended to myhostname to form a complete host
6553 name. The dot comes with mydomain, and need not be supplied by the
6554 program.
6555
6556 "myhostname"
6557 From myhostname.U:
6558
6559 This variable contains the eventual value of the "MYHOSTNAME"
6560 symbol, which is the name of the host the program is going to run
6561 on. The domain is not kept with hostname, but must be gotten from
6562 mydomain. The dot comes with mydomain, and need not be supplied by
6563 the program.
6564
6565 "myuname"
6566 From Oldconfig.U:
6567
6568 The output of "uname -a" if available, otherwise the hostname. The
6569 whole thing is then lower-cased and slashes and single quotes are
6570 removed.
6571
6572 n
6573 "n" From n.U:
6574
6575 This variable contains the "-n" flag if that is what causes the
6576 echo command to suppress newline. Otherwise it is null. Correct
6577 usage is $echo $n "prompt for a question: $c".
6578
6579 "need_va_copy"
6580 From need_va_copy.U:
6581
6582 This symbol, if defined, indicates that the system stores the
6583 variable argument list datatype, va_list, in a format that cannot
6584 be copied by simple assignment, so that some other means must be
6585 used when copying is required. As such systems vary in their
6586 provision (or non-provision) of copying mechanisms, handy.h defines
6587 a platform- "independent" macro, Perl_va_copy(src, dst), to do the
6588 job.
6589
6590 "netdb_hlen_type"
6591 From netdbtype.U:
6592
6593 This variable holds the type used for the 2nd argument to
6594 gethostbyaddr(). Usually, this is int or size_t or unsigned. This
6595 is only useful if you have gethostbyaddr(), naturally.
6596
6597 "netdb_host_type"
6598 From netdbtype.U:
6599
6600 This variable holds the type used for the 1st argument to
6601 gethostbyaddr(). Usually, this is char * or void *, possibly with
6602 or without a const prefix. This is only useful if you have
6603 gethostbyaddr(), naturally.
6604
6605 "netdb_name_type"
6606 From netdbtype.U:
6607
6608 This variable holds the type used for the argument to
6609 gethostbyname(). Usually, this is char * or const char *. This is
6610 only useful if you have gethostbyname(), naturally.
6611
6612 "netdb_net_type"
6613 From netdbtype.U:
6614
6615 This variable holds the type used for the 1st argument to
6616 getnetbyaddr(). Usually, this is int or long. This is only useful
6617 if you have getnetbyaddr(), naturally.
6618
6619 "nm"
6620 From Loc.U:
6621
6622 This variable is used internally by Configure to determine the full
6623 pathname (if any) of the nm program. After Configure runs, the
6624 value is reset to a plain "nm" and is not useful.
6625
6626 "nm_opt"
6627 From usenm.U:
6628
6629 This variable holds the options that may be necessary for nm.
6630
6631 "nm_so_opt"
6632 From usenm.U:
6633
6634 This variable holds the options that may be necessary for nm to
6635 work on a shared library but that can not be used on an archive
6636 library. Currently, this is only used by Linux, where nm --dynamic
6637 is *required* to get symbols from an "ELF" library which has been
6638 stripped, but nm --dynamic is *fatal* on an archive library. Maybe
6639 Linux should just always set usenm=false.
6640
6641 "nonxs_ext"
6642 From Extensions.U:
6643
6644 This variable holds a list of all non-xs extensions built and
6645 installed by the package. By default, all non-xs extensions
6646 distributed will be built, with the exception of platform-specific
6647 extensions (currently only one "VMS" specific extension).
6648
6649 "nroff"
6650 From Loc.U:
6651
6652 This variable is used internally by Configure to determine the full
6653 pathname (if any) of the nroff program. After Configure runs, the
6654 value is reset to a plain "nroff" and is not useful.
6655
6656 "nvEUformat"
6657 From perlxvf.U:
6658
6659 This variable contains the format string used for printing a Perl
6660 "NV" using %E-ish floating point format.
6661
6662 "nvFUformat"
6663 From perlxvf.U:
6664
6665 This variable contains the format string used for printing a Perl
6666 "NV" using %F-ish floating point format.
6667
6668 "nvGUformat"
6669 From perlxvf.U:
6670
6671 This variable contains the format string used for printing a Perl
6672 "NV" using %G-ish floating point format.
6673
6674 "nv_overflows_integers_at"
6675 From perlxv.U:
6676
6677 This variable gives the largest integer value that NVs can hold as
6678 a constant floating point expression. If it could not be
6679 determined, it holds the value 0.
6680
6681 "nv_preserves_uv_bits"
6682 From perlxv.U:
6683
6684 This variable indicates how many of bits type uvtype a variable
6685 nvtype can preserve.
6686
6687 "nveformat"
6688 From perlxvf.U:
6689
6690 This variable contains the format string used for printing a Perl
6691 "NV" using %e-ish floating point format.
6692
6693 "nvfformat"
6694 From perlxvf.U:
6695
6696 This variable contains the format string used for printing a Perl
6697 "NV" using %f-ish floating point format.
6698
6699 "nvgformat"
6700 From perlxvf.U:
6701
6702 This variable contains the format string used for printing a Perl
6703 "NV" using %g-ish floating point format.
6704
6705 "nvmantbits"
6706 From mantbits.U:
6707
6708 This variable tells how many bits the mantissa of a Perl "NV" has,
6709 not including the possible implicit bit.
6710
6711 "nvsize"
6712 From perlxv.U:
6713
6714 This variable is the size of a Perl "NV" in bytes. Note that some
6715 floating point formats have unused bytes.
6716
6717 "nvtype"
6718 From perlxv.U:
6719
6720 This variable contains the C type used for Perl's "NV".
6721
6722 o
6723 "o_nonblock"
6724 From nblock_io.U:
6725
6726 This variable bears the symbol value to be used during open() or
6727 fcntl() to turn on non-blocking I/O for a file descriptor. If you
6728 wish to switch between blocking and non-blocking, you may try
6729 ioctl("FIOSNBIO") instead, but that is only supported by some
6730 devices.
6731
6732 "obj_ext"
6733 From Unix.U:
6734
6735 This is an old synonym for _o.
6736
6737 "old_pthread_create_joinable"
6738 From d_pthrattrj.U:
6739
6740 This variable defines the constant to use for creating joinable
6741 (aka undetached) pthreads. Unused if pthread.h defines
6742 "PTHREAD_CREATE_JOINABLE". If used, possible values are
6743 "PTHREAD_CREATE_UNDETACHED" and "__UNDETACHED".
6744
6745 "optimize"
6746 From ccflags.U:
6747
6748 This variable contains any optimizer/debugger flag that should be
6749 used. It is up to the Makefile to use it.
6750
6751 "orderlib"
6752 From orderlib.U:
6753
6754 This variable is "true" if the components of libraries must be
6755 ordered (with `lorder $* | tsort`) before placing them in an
6756 archive. Set to "false" if ranlib or ar can generate random
6757 libraries.
6758
6759 "osname"
6760 From Oldconfig.U:
6761
6762 This variable contains the operating system name (e.g. sunos,
6763 solaris, hpux, etc.). It can be useful later on for setting
6764 defaults. Any spaces are replaced with underscores. It is set to
6765 a null string if we can't figure it out.
6766
6767 "osvers"
6768 From Oldconfig.U:
6769
6770 This variable contains the operating system version (e.g. 4.1.3,
6771 5.2, etc.). It is primarily used for helping select an appropriate
6772 hints file, but might be useful elsewhere for setting defaults. It
6773 is set to '' if we can't figure it out. We try to be flexible
6774 about how much of the version number to keep, e.g. if 4.1.1, 4.1.2,
6775 and 4.1.3 are essentially the same for this package, hints files
6776 might just be os_4.0 or os_4.1, etc., not keeping separate files
6777 for each little release.
6778
6779 "otherlibdirs"
6780 From otherlibdirs.U:
6781
6782 This variable contains a colon-separated set of paths for the perl
6783 binary to search for additional library files or modules. These
6784 directories will be tacked to the end of @"INC". Perl will
6785 automatically search below each path for version- and architecture-
6786 specific directories. See inc_version_list for more details. A
6787 value of " " means "none" and is used to preserve this value for
6788 the next run through Configure.
6789
6790 p
6791 "package"
6792 From package.U:
6793
6794 This variable contains the name of the package being constructed.
6795 It is primarily intended for the use of later Configure units.
6796
6797 "pager"
6798 From pager.U:
6799
6800 This variable contains the name of the preferred pager on the
6801 system. Usual values are (the full pathnames of) more, less, pg,
6802 or cat.
6803
6804 "passcat"
6805 From nis.U:
6806
6807 This variable contains a command that produces the text of the
6808 /etc/passwd file. This is normally "cat /etc/passwd", but can be
6809 "ypcat passwd" when "NIS" is used. On some systems, such as os390,
6810 there may be no equivalent command, in which case this variable is
6811 unset.
6812
6813 "patchlevel"
6814 From patchlevel.U:
6815
6816 The patchlevel level of this package. The value of patchlevel
6817 comes from the patchlevel.h file. In a version number such as
6818 5.6.1, this is the 6. In patchlevel.h, this is referred to as
6819 "PERL_VERSION".
6820
6821 "path_sep"
6822 From Unix.U:
6823
6824 This is an old synonym for p_ in Head.U, the character used to
6825 separate elements in the command shell search "PATH".
6826
6827 "perl"
6828 From Loc.U:
6829
6830 This variable is used internally by Configure to determine the full
6831 pathname (if any) of the perl program. After Configure runs, the
6832 value is reset to a plain "perl" and is not useful.
6833
6834 "perl5"
6835 From perl5.U:
6836
6837 This variable contains the full path (if any) to a previously
6838 installed perl5.005 or later suitable for running the script to
6839 determine inc_version_list.
6840
6841 "perl_patchlevel"
6842 From patchlevel.U:
6843
6844 This is the Perl patch level, a numeric change identifier, as
6845 defined by whichever source code maintenance system is used to
6846 maintain the patches; currently Perforce. It does not correlate
6847 with the Perl version numbers or the maintenance versus development
6848 dichotomy except by also being increasing.
6849
6850 "perl_static_inline"
6851 From d_static_inline.U:
6852
6853 This variable defines the "PERL_STATIC_INLINE" symbol to the best-
6854 guess incantation to use for static inline functions.
6855 Possibilities include static inline (c99) static __inline__
6856 (gcc -ansi) static __inline ("MSVC") static _inline (older
6857 "MSVC") static (c89 compilers)
6858
6859 "perl_thread_local"
6860 From d_thread_local.U:
6861
6862 This variable gives the value for the "PERL_THREAD_LOCAL" symbol
6863 (when defined), which gives a linkage specification for thread-
6864 local storage.
6865
6866 "perladmin"
6867 From perladmin.U:
6868
6869 Electronic mail address of the perl5 administrator.
6870
6871 "perllibs"
6872 From End.U:
6873
6874 The list of libraries needed by Perl only (any libraries needed by
6875 extensions only will by dropped, if using dynamic loading).
6876
6877 "perlpath"
6878 From perlpath.U:
6879
6880 This variable contains the eventual value of the "PERLPATH" symbol,
6881 which contains the name of the perl interpreter to be used in shell
6882 scripts and in the "eval "exec"" idiom. This variable is not
6883 necessarily the pathname of the file containing the perl
6884 interpreter; you must append the executable extension (_exe) if it
6885 is not already present. Note that Perl code that runs during the
6886 Perl build process cannot reference this variable, as Perl may not
6887 have been installed, or even if installed, may be a different
6888 version of Perl.
6889
6890 "pg"
6891 From Loc.U:
6892
6893 This variable is used internally by Configure to determine the full
6894 pathname (if any) of the pg program. After Configure runs, the
6895 value is reset to a plain "pg" and is not useful.
6896
6897 "phostname"
6898 From myhostname.U:
6899
6900 This variable contains the eventual value of the "PHOSTNAME"
6901 symbol, which is a command that can be fed to popen() to get the
6902 host name. The program should probably not presume that the domain
6903 is or isn't there already.
6904
6905 "pidtype"
6906 From pidtype.U:
6907
6908 This variable defines "PIDTYPE" to be something like pid_t, int,
6909 ushort, or whatever type is used to declare process ids in the
6910 kernel.
6911
6912 "plibpth"
6913 From libpth.U:
6914
6915 Holds the private path used by Configure to find out the libraries.
6916 Its value is prepend to libpth. This variable takes care of special
6917 machines, like the mips. Usually, it should be empty.
6918
6919 "pmake"
6920 From Loc.U:
6921
6922 This variable is defined but not used by Configure. The value is
6923 the empty string and is not useful.
6924
6925 "pr"
6926 From Loc.U:
6927
6928 This variable is defined but not used by Configure. The value is
6929 the empty string and is not useful.
6930
6931 "prefix"
6932 From prefix.U:
6933
6934 This variable holds the name of the directory below which the user
6935 will install the package. Usually, this is /usr/local, and
6936 executables go in /usr/local/bin, library stuff in /usr/local/lib,
6937 man pages in /usr/local/man, etc. It is only used to set defaults
6938 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
6939
6940 "prefixexp"
6941 From prefix.U:
6942
6943 This variable holds the full absolute path of the directory below
6944 which the user will install the package. Derived from prefix.
6945
6946 "privlib"
6947 From privlib.U:
6948
6949 This variable contains the eventual value of the "PRIVLIB" symbol,
6950 which is the name of the private library for this package. It may
6951 have a ~ on the front. It is up to the makefile to eventually
6952 create this directory while performing installation (with ~
6953 substitution).
6954
6955 "privlibexp"
6956 From privlib.U:
6957
6958 This variable is the ~name expanded version of privlib, so that you
6959 may use it directly in Makefiles or shell scripts.
6960
6961 "procselfexe"
6962 From d_procselfexe.U:
6963
6964 If d_procselfexe is defined, $procselfexe is the filename of the
6965 symbolic link pointing to the absolute pathname of the executing
6966 program.
6967
6968 "ptrsize"
6969 From ptrsize.U:
6970
6971 This variable contains the value of the "PTRSIZE" symbol, which
6972 indicates to the C program how many bytes there are in a pointer.
6973
6974 q
6975 "quadkind"
6976 From quadtype.U:
6977
6978 This variable, if defined, encodes the type of a quad: 1 = int, 2 =
6979 long, 3 = long long, 4 = int64_t.
6980
6981 "quadtype"
6982 From quadtype.U:
6983
6984 This variable defines Quad_t to be something like long, int, long
6985 long, int64_t, or whatever type is used for 64-bit integers.
6986
6987 r
6988 "randbits"
6989 From randfunc.U:
6990
6991 Indicates how many bits are produced by the function used to
6992 generate normalized random numbers.
6993
6994 "randfunc"
6995 From randfunc.U:
6996
6997 Indicates the name of the random number function to use. Values
6998 include drand48, random, and rand. In C programs, the "Drand01"
6999 macro is defined to generate uniformly distributed random numbers
7000 over the range [0., 1.[ (see drand01 and nrand).
7001
7002 "random_r_proto"
7003 From d_random_r.U:
7004
7005 This variable encodes the prototype of random_r. It is zero if
7006 d_random_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7007 of reentr.h if d_random_r is defined.
7008
7009 "randseedtype"
7010 From randfunc.U:
7011
7012 Indicates the type of the argument of the seedfunc.
7013
7014 "ranlib"
7015 From orderlib.U:
7016
7017 This variable is set to the pathname of the ranlib program, if it
7018 is needed to generate random libraries. Set to ":" if ar can
7019 generate random libraries or if random libraries are not supported
7020
7021 "rd_nodata"
7022 From nblock_io.U:
7023
7024 This variable holds the return code from read() when no data is
7025 present. It should be -1, but some systems return 0 when "O_NDELAY"
7026 is used, which is a shame because you cannot make the difference
7027 between no data and an EOF.. Sigh!
7028
7029 "readdir64_r_proto"
7030 From d_readdir64_r.U:
7031
7032 This variable encodes the prototype of readdir64_r. It is zero if
7033 d_readdir64_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7034 macros of reentr.h if d_readdir64_r is defined.
7035
7036 "readdir_r_proto"
7037 From d_readdir_r.U:
7038
7039 This variable encodes the prototype of readdir_r. It is zero if
7040 d_readdir_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7041 of reentr.h if d_readdir_r is defined.
7042
7043 "revision"
7044 From patchlevel.U:
7045
7046 The value of revision comes from the patchlevel.h file. In a
7047 version number such as 5.6.1, this is the 5. In patchlevel.h, this
7048 is referred to as "PERL_REVISION".
7049
7050 "rm"
7051 From Loc.U:
7052
7053 This variable is used internally by Configure to determine the full
7054 pathname (if any) of the rm program. After Configure runs, the
7055 value is reset to a plain "rm" and is not useful.
7056
7057 "rm_try"
7058 From Unix.U:
7059
7060 This is a cleanup variable for try test programs. Internal
7061 Configure use only.
7062
7063 "rmail"
7064 From Loc.U:
7065
7066 This variable is defined but not used by Configure. The value is
7067 the empty string and is not useful.
7068
7069 "run"
7070 From Cross.U:
7071
7072 This variable contains the command used by Configure to copy and
7073 execute a cross-compiled executable in the target host. Useful and
7074 available only during Perl build. Empty string '' if not cross-
7075 compiling.
7076
7077 "runnm"
7078 From usenm.U:
7079
7080 This variable contains "true" or "false" depending whether the nm
7081 extraction should be performed or not, according to the value of
7082 usenm and the flags on the Configure command line.
7083
7084 s
7085 "sGMTIME_max"
7086 From time_size.U:
7087
7088 This variable defines the maximum value of the time_t offset that
7089 the system function gmtime () accepts
7090
7091 "sGMTIME_min"
7092 From time_size.U:
7093
7094 This variable defines the minimum value of the time_t offset that
7095 the system function gmtime () accepts
7096
7097 "sLOCALTIME_max"
7098 From time_size.U:
7099
7100 This variable defines the maximum value of the time_t offset that
7101 the system function localtime () accepts
7102
7103 "sLOCALTIME_min"
7104 From time_size.U:
7105
7106 This variable defines the minimum value of the time_t offset that
7107 the system function localtime () accepts
7108
7109 "sPRIEUldbl"
7110 From longdblfio.U:
7111
7112 This variable, if defined, contains the string used by stdio to
7113 format long doubles (format "E") for output. The "U" in the name
7114 is to separate this from sPRIeldbl so that even case-blind systems
7115 can see the difference.
7116
7117 "sPRIFUldbl"
7118 From longdblfio.U:
7119
7120 This variable, if defined, contains the string used by stdio to
7121 format long doubles (format "F") for output. The "U" in the name
7122 is to separate this from sPRIfldbl so that even case-blind systems
7123 can see the difference.
7124
7125 "sPRIGUldbl"
7126 From longdblfio.U:
7127
7128 This variable, if defined, contains the string used by stdio to
7129 format long doubles (format "G") for output. The "U" in the name
7130 is to separate this from sPRIgldbl so that even case-blind systems
7131 can see the difference.
7132
7133 "sPRIXU64"
7134 From quadfio.U:
7135
7136 This variable, if defined, contains the string used by stdio to
7137 format 64-bit hExADECimAl numbers (format "X") for output. The "U"
7138 in the name is to separate this from sPRIx64 so that even case-
7139 blind systems can see the difference.
7140
7141 "sPRId64"
7142 From quadfio.U:
7143
7144 This variable, if defined, contains the string used by stdio to
7145 format 64-bit decimal numbers (format "d") for output.
7146
7147 "sPRIeldbl"
7148 From longdblfio.U:
7149
7150 This variable, if defined, contains the string used by stdio to
7151 format long doubles (format "e") for output.
7152
7153 "sPRIfldbl"
7154 From longdblfio.U:
7155
7156 This variable, if defined, contains the string used by stdio to
7157 format long doubles (format "f") for output.
7158
7159 "sPRIgldbl"
7160 From longdblfio.U:
7161
7162 This variable, if defined, contains the string used by stdio to
7163 format long doubles (format "g") for output.
7164
7165 "sPRIi64"
7166 From quadfio.U:
7167
7168 This variable, if defined, contains the string used by stdio to
7169 format 64-bit decimal numbers (format "i") for output.
7170
7171 "sPRIo64"
7172 From quadfio.U:
7173
7174 This variable, if defined, contains the string used by stdio to
7175 format 64-bit octal numbers (format "o") for output.
7176
7177 "sPRIu64"
7178 From quadfio.U:
7179
7180 This variable, if defined, contains the string used by stdio to
7181 format 64-bit unsigned decimal numbers (format "u") for output.
7182
7183 "sPRIx64"
7184 From quadfio.U:
7185
7186 This variable, if defined, contains the string used by stdio to
7187 format 64-bit hexadecimal numbers (format "x") for output.
7188
7189 "sSCNfldbl"
7190 From longdblfio.U:
7191
7192 This variable, if defined, contains the string used by stdio to
7193 format long doubles (format "f") for input.
7194
7195 "sched_yield"
7196 From d_pthread_y.U:
7197
7198 This variable defines the way to yield the execution of the current
7199 thread.
7200
7201 "scriptdir"
7202 From scriptdir.U:
7203
7204 This variable holds the name of the directory in which the user
7205 wants to put publicly scripts for the package in question. It is
7206 either the same directory as for binaries, or a special one that
7207 can be mounted across different architectures, like /usr/share.
7208 Programs must be prepared to deal with ~name expansion.
7209
7210 "scriptdirexp"
7211 From scriptdir.U:
7212
7213 This variable is the same as scriptdir, but is filename expanded at
7214 configuration time, for programs not wanting to bother with it.
7215
7216 "sed"
7217 From Loc.U:
7218
7219 This variable is used internally by Configure to determine the full
7220 pathname (if any) of the sed program. After Configure runs, the
7221 value is reset to a plain "sed" and is not useful.
7222
7223 "seedfunc"
7224 From randfunc.U:
7225
7226 Indicates the random number generating seed function. Values
7227 include srand48, srandom, and srand.
7228
7229 "selectminbits"
7230 From selectminbits.U:
7231
7232 This variable holds the minimum number of bits operated by select.
7233 That is, if you do select(n, ...), how many bits at least will be
7234 cleared in the masks if some activity is detected. Usually this is
7235 either n or 32*ceil(n/32), especially many little-endians do the
7236 latter. This is only useful if you have select(), naturally.
7237
7238 "selecttype"
7239 From selecttype.U:
7240
7241 This variable holds the type used for the 2nd, 3rd, and 4th
7242 arguments to select. Usually, this is "fd_set *", if "HAS_FD_SET"
7243 is defined, and "int *" otherwise. This is only useful if you have
7244 select(), naturally.
7245
7246 "sendmail"
7247 From Loc.U:
7248
7249 This variable is defined but not used by Configure. The value is
7250 the empty string and is not useful.
7251
7252 "setgrent_r_proto"
7253 From d_setgrent_r.U:
7254
7255 This variable encodes the prototype of setgrent_r. It is zero if
7256 d_setgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7257 macros of reentr.h if d_setgrent_r is defined.
7258
7259 "sethostent_r_proto"
7260 From d_sethostent_r.U:
7261
7262 This variable encodes the prototype of sethostent_r. It is zero if
7263 d_sethostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7264 macros of reentr.h if d_sethostent_r is defined.
7265
7266 "setlocale_r_proto"
7267 From d_setlocale_r.U:
7268
7269 This variable encodes the prototype of setlocale_r. It is zero if
7270 d_setlocale_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7271 macros of reentr.h if d_setlocale_r is defined.
7272
7273 "setnetent_r_proto"
7274 From d_setnetent_r.U:
7275
7276 This variable encodes the prototype of setnetent_r. It is zero if
7277 d_setnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7278 macros of reentr.h if d_setnetent_r is defined.
7279
7280 "setprotoent_r_proto"
7281 From d_setprotoent_r.U:
7282
7283 This variable encodes the prototype of setprotoent_r. It is zero
7284 if d_setprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7285 macros of reentr.h if d_setprotoent_r is defined.
7286
7287 "setpwent_r_proto"
7288 From d_setpwent_r.U:
7289
7290 This variable encodes the prototype of setpwent_r. It is zero if
7291 d_setpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7292 macros of reentr.h if d_setpwent_r is defined.
7293
7294 "setservent_r_proto"
7295 From d_setservent_r.U:
7296
7297 This variable encodes the prototype of setservent_r. It is zero if
7298 d_setservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7299 macros of reentr.h if d_setservent_r is defined.
7300
7301 "sh"
7302 From sh.U:
7303
7304 This variable contains the full pathname of the shell used on this
7305 system to execute Bourne shell scripts. Usually, this will be
7306 /bin/sh, though it's possible that some systems will have /bin/ksh,
7307 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
7308 D:/bin/sh.exe. This unit comes before Options.U, so you can't set
7309 sh with a "-D" option, though you can override this (and startsh)
7310 with "-O -Dsh=/bin/whatever -Dstartsh=whatever"
7311
7312 "shar"
7313 From Loc.U:
7314
7315 This variable is defined but not used by Configure. The value is
7316 the empty string and is not useful.
7317
7318 "sharpbang"
7319 From spitshell.U:
7320
7321 This variable contains the string #! if this system supports that
7322 construct.
7323
7324 "shmattype"
7325 From d_shmat.U:
7326
7327 This symbol contains the type of pointer returned by shmat(). It
7328 can be "void *" or "char *".
7329
7330 "shortsize"
7331 From intsize.U:
7332
7333 This variable contains the value of the "SHORTSIZE" symbol which
7334 indicates to the C program how many bytes there are in a short.
7335
7336 "shrpenv"
7337 From libperl.U:
7338
7339 If the user builds a shared libperl.so, then we need to tell the
7340 "perl" executable where it will be able to find the installed
7341 libperl.so. One way to do this on some systems is to set the
7342 environment variable "LD_RUN_PATH" to the directory that will be
7343 the final location of the shared libperl.so. The makefile can use
7344 this with something like $shrpenv $("CC") -o perl perlmain.o
7345 $libperl $libs Typical values are shrpenv="env
7346 "LD_RUN_PATH"=$archlibexp/"CORE"" or shrpenv='' See the main perl
7347 Makefile.SH for actual working usage.
7348
7349 Alternatively, we might be able to use a command line option such
7350 as -R $archlibexp/"CORE" (Solaris) or -Wl,-rpath $archlibexp/"CORE"
7351 (Linux).
7352
7353 "shsharp"
7354 From spitshell.U:
7355
7356 This variable tells further Configure units whether your sh can
7357 handle # comments.
7358
7359 "sig_count"
7360 From sig_name.U:
7361
7362 This variable holds a number larger than the largest valid signal
7363 number. This is usually the same as the "NSIG" macro.
7364
7365 "sig_name"
7366 From sig_name.U:
7367
7368 This variable holds the signal names, space separated. The leading
7369 "SIG" in signal name is removed. A "ZERO" is prepended to the
7370 list. This is currently not used, sig_name_init is used instead.
7371
7372 "sig_name_init"
7373 From sig_name.U:
7374
7375 This variable holds the signal names, enclosed in double quotes and
7376 separated by commas, suitable for use in the "SIG_NAME" definition
7377 below. A "ZERO" is prepended to the list, and the list is
7378 terminated with a plain 0. The leading "SIG" in signal names is
7379 removed. See sig_num.
7380
7381 "sig_num"
7382 From sig_name.U:
7383
7384 This variable holds the signal numbers, space separated. A "ZERO"
7385 is prepended to the list (corresponding to the fake "SIGZERO").
7386 Those numbers correspond to the value of the signal listed in the
7387 same place within the sig_name list. This is currently not used,
7388 sig_num_init is used instead.
7389
7390 "sig_num_init"
7391 From sig_name.U:
7392
7393 This variable holds the signal numbers, enclosed in double quotes
7394 and separated by commas, suitable for use in the "SIG_NUM"
7395 definition below. A "ZERO" is prepended to the list, and the list
7396 is terminated with a plain 0.
7397
7398 "sig_size"
7399 From sig_name.U:
7400
7401 This variable contains the number of elements of the sig_name and
7402 sig_num arrays.
7403
7404 "signal_t"
7405 From d_voidsig.U:
7406
7407 This variable holds the type of the signal handler (void or int).
7408
7409 "sitearch"
7410 From sitearch.U:
7411
7412 This variable contains the eventual value of the "SITEARCH" symbol,
7413 which is the name of the private library for this package. It may
7414 have a ~ on the front. It is up to the makefile to eventually
7415 create this directory while performing installation (with ~
7416 substitution). The standard distribution will put nothing in this
7417 directory. After perl has been installed, users may install their
7418 own local architecture-dependent modules in this directory with
7419 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7420
7421 "sitearchexp"
7422 From sitearch.U:
7423
7424 This variable is the ~name expanded version of sitearch, so that
7425 you may use it directly in Makefiles or shell scripts.
7426
7427 "sitebin"
7428 From sitebin.U:
7429
7430 This variable holds the name of the directory in which the user
7431 wants to put add-on publicly executable files for the package in
7432 question. It is most often a local directory such as
7433 /usr/local/bin. Programs using this variable must be prepared to
7434 deal with ~name substitution. The standard distribution will put
7435 nothing in this directory. After perl has been installed, users
7436 may install their own local executables in this directory with
7437 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7438
7439 "sitebinexp"
7440 From sitebin.U:
7441
7442 This is the same as the sitebin variable, but is filename expanded
7443 at configuration time, for use in your makefiles.
7444
7445 "sitehtml1dir"
7446 From sitehtml1dir.U:
7447
7448 This variable contains the name of the directory in which site-
7449 specific html source pages are to be put. It is the responsibility
7450 of the Makefile.SH to get the value of this into the proper
7451 command. You must be prepared to do the ~name expansion yourself.
7452 The standard distribution will put nothing in this directory.
7453 After perl has been installed, users may install their own local
7454 html pages in this directory with MakeMaker Makefile.PL or
7455 equivalent. See "INSTALL" for details.
7456
7457 "sitehtml1direxp"
7458 From sitehtml1dir.U:
7459
7460 This variable is the same as the sitehtml1dir variable, but is
7461 filename expanded at configuration time, for convenient use in
7462 makefiles.
7463
7464 "sitehtml3dir"
7465 From sitehtml3dir.U:
7466
7467 This variable contains the name of the directory in which site-
7468 specific library html source pages are to be put. It is the
7469 responsibility of the Makefile.SH to get the value of this into the
7470 proper command. You must be prepared to do the ~name expansion
7471 yourself. The standard distribution will put nothing in this
7472 directory. After perl has been installed, users may install their
7473 own local library html pages in this directory with MakeMaker
7474 Makefile.PL or equivalent. See "INSTALL" for details.
7475
7476 "sitehtml3direxp"
7477 From sitehtml3dir.U:
7478
7479 This variable is the same as the sitehtml3dir variable, but is
7480 filename expanded at configuration time, for convenient use in
7481 makefiles.
7482
7483 "sitelib"
7484 From sitelib.U:
7485
7486 This variable contains the eventual value of the "SITELIB" symbol,
7487 which is the name of the private library for this package. It may
7488 have a ~ on the front. It is up to the makefile to eventually
7489 create this directory while performing installation (with ~
7490 substitution). The standard distribution will put nothing in this
7491 directory. After perl has been installed, users may install their
7492 own local architecture-independent modules in this directory with
7493 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7494
7495 "sitelib_stem"
7496 From sitelib.U:
7497
7498 This variable is $sitelibexp with any trailing version-specific
7499 component removed. The elements in inc_version_list
7500 (inc_version_list.U) can be tacked onto this variable to generate a
7501 list of directories to search.
7502
7503 "sitelibexp"
7504 From sitelib.U:
7505
7506 This variable is the ~name expanded version of sitelib, so that you
7507 may use it directly in Makefiles or shell scripts.
7508
7509 "siteman1dir"
7510 From siteman1dir.U:
7511
7512 This variable contains the name of the directory in which site-
7513 specific manual source pages are to be put. It is the
7514 responsibility of the Makefile.SH to get the value of this into the
7515 proper command. You must be prepared to do the ~name expansion
7516 yourself. The standard distribution will put nothing in this
7517 directory. After perl has been installed, users may install their
7518 own local man1 pages in this directory with MakeMaker Makefile.PL
7519 or equivalent. See "INSTALL" for details.
7520
7521 "siteman1direxp"
7522 From siteman1dir.U:
7523
7524 This variable is the same as the siteman1dir variable, but is
7525 filename expanded at configuration time, for convenient use in
7526 makefiles.
7527
7528 "siteman3dir"
7529 From siteman3dir.U:
7530
7531 This variable contains the name of the directory in which site-
7532 specific library man source pages are to be put. It is the
7533 responsibility of the Makefile.SH to get the value of this into the
7534 proper command. You must be prepared to do the ~name expansion
7535 yourself. The standard distribution will put nothing in this
7536 directory. After perl has been installed, users may install their
7537 own local man3 pages in this directory with MakeMaker Makefile.PL
7538 or equivalent. See "INSTALL" for details.
7539
7540 "siteman3direxp"
7541 From siteman3dir.U:
7542
7543 This variable is the same as the siteman3dir variable, but is
7544 filename expanded at configuration time, for convenient use in
7545 makefiles.
7546
7547 "siteprefix"
7548 From siteprefix.U:
7549
7550 This variable holds the full absolute path of the directory below
7551 which the user will install add-on packages. See "INSTALL" for
7552 usage and examples.
7553
7554 "siteprefixexp"
7555 From siteprefix.U:
7556
7557 This variable holds the full absolute path of the directory below
7558 which the user will install add-on packages. Derived from
7559 siteprefix.
7560
7561 "sitescript"
7562 From sitescript.U:
7563
7564 This variable holds the name of the directory in which the user
7565 wants to put add-on publicly executable files for the package in
7566 question. It is most often a local directory such as
7567 /usr/local/bin. Programs using this variable must be prepared to
7568 deal with ~name substitution. The standard distribution will put
7569 nothing in this directory. After perl has been installed, users
7570 may install their own local scripts in this directory with
7571 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7572
7573 "sitescriptexp"
7574 From sitescript.U:
7575
7576 This is the same as the sitescript variable, but is filename
7577 expanded at configuration time, for use in your makefiles.
7578
7579 "sizesize"
7580 From sizesize.U:
7581
7582 This variable contains the size of a sizetype in bytes.
7583
7584 "sizetype"
7585 From sizetype.U:
7586
7587 This variable defines sizetype to be something like size_t,
7588 unsigned long, or whatever type is used to declare length
7589 parameters for string functions.
7590
7591 "sleep"
7592 From Loc.U:
7593
7594 This variable is defined but not used by Configure. The value is
7595 the empty string and is not useful.
7596
7597 "smail"
7598 From Loc.U:
7599
7600 This variable is defined but not used by Configure. The value is
7601 the empty string and is not useful.
7602
7603 "so"
7604 From so.U:
7605
7606 This variable holds the extension used to identify shared libraries
7607 (also known as shared objects) on the system. Usually set to "so".
7608
7609 "sockethdr"
7610 From d_socket.U:
7611
7612 This variable has any cpp "-I" flags needed for socket support.
7613
7614 "socketlib"
7615 From d_socket.U:
7616
7617 This variable has the names of any libraries needed for socket
7618 support.
7619
7620 "socksizetype"
7621 From socksizetype.U:
7622
7623 This variable holds the type used for the size argument for various
7624 socket calls like accept. Usual values include socklen_t, size_t,
7625 and int.
7626
7627 "sort"
7628 From Loc.U:
7629
7630 This variable is used internally by Configure to determine the full
7631 pathname (if any) of the sort program. After Configure runs, the
7632 value is reset to a plain "sort" and is not useful.
7633
7634 "spackage"
7635 From package.U:
7636
7637 This variable contains the name of the package being constructed,
7638 with the first letter uppercased, i.e. suitable for starting
7639 sentences.
7640
7641 "spitshell"
7642 From spitshell.U:
7643
7644 This variable contains the command necessary to spit out a runnable
7645 shell on this system. It is either cat or a grep "-v" for #
7646 comments.
7647
7648 "srand48_r_proto"
7649 From d_srand48_r.U:
7650
7651 This variable encodes the prototype of srand48_r. It is zero if
7652 d_srand48_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7653 of reentr.h if d_srand48_r is defined.
7654
7655 "srandom_r_proto"
7656 From d_srandom_r.U:
7657
7658 This variable encodes the prototype of srandom_r. It is zero if
7659 d_srandom_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7660 of reentr.h if d_srandom_r is defined.
7661
7662 "src"
7663 From src.U:
7664
7665 This variable holds the (possibly relative) path of the package
7666 source. It is up to the Makefile to use this variable and set
7667 "VPATH" accordingly to find the sources remotely. Use $pkgsrc to
7668 have an absolute path.
7669
7670 "ssizetype"
7671 From ssizetype.U:
7672
7673 This variable defines ssizetype to be something like ssize_t, long
7674 or int. It is used by functions that return a count of bytes or an
7675 error condition. It must be a signed type. We will pick a type
7676 such that sizeof(SSize_t) == sizeof(Size_t).
7677
7678 "st_dev_sign"
7679 From st_dev_def.U:
7680
7681 This variable contains the signedness of struct stat's st_dev. 1
7682 for unsigned, -1 for signed.
7683
7684 "st_dev_size"
7685 From st_dev_def.U:
7686
7687 This variable contains the size of struct stat's st_dev in bytes.
7688
7689 "st_ino_sign"
7690 From st_ino_def.U:
7691
7692 This variable contains the signedness of struct stat's st_ino. 1
7693 for unsigned, -1 for signed.
7694
7695 "st_ino_size"
7696 From st_ino_def.U:
7697
7698 This variable contains the size of struct stat's st_ino in bytes.
7699
7700 "startperl"
7701 From startperl.U:
7702
7703 This variable contains the string to put on the front of a perl
7704 script to make sure (hopefully) that it runs with perl and not some
7705 shell. Of course, that leading line must be followed by the
7706 classical perl idiom: eval 'exec perl -S $0 ${1+$@}' if
7707 $running_under_some_shell; to guarantee perl startup should the
7708 shell execute the script. Note that this magic incantation is not
7709 understood by csh.
7710
7711 "startsh"
7712 From startsh.U:
7713
7714 This variable contains the string to put on the front of a shell
7715 script to make sure (hopefully) that it runs with sh and not some
7716 other shell.
7717
7718 "static_ext"
7719 From Extensions.U:
7720
7721 This variable holds a list of "XS" extension files we want to link
7722 statically into the package. It is used by Makefile.
7723
7724 "stdchar"
7725 From stdchar.U:
7726
7727 This variable conditionally defines "STDCHAR" to be the type of
7728 char used in stdio.h. It has the values "unsigned char" or "char".
7729
7730 "stdio_base"
7731 From d_stdstdio.U:
7732
7733 This variable defines how, given a "FILE" pointer, fp, to access
7734 the _base field (or equivalent) of stdio.h's "FILE" structure.
7735 This will be used to define the macro FILE_base(fp).
7736
7737 "stdio_bufsiz"
7738 From d_stdstdio.U:
7739
7740 This variable defines how, given a "FILE" pointer, fp, to determine
7741 the number of bytes store in the I/O buffer pointer to by the _base
7742 field (or equivalent) of stdio.h's "FILE" structure. This will be
7743 used to define the macro FILE_bufsiz(fp).
7744
7745 "stdio_cnt"
7746 From d_stdstdio.U:
7747
7748 This variable defines how, given a "FILE" pointer, fp, to access
7749 the _cnt field (or equivalent) of stdio.h's "FILE" structure. This
7750 will be used to define the macro FILE_cnt(fp).
7751
7752 "stdio_filbuf"
7753 From d_stdstdio.U:
7754
7755 This variable defines how, given a "FILE" pointer, fp, to tell
7756 stdio to refill its internal buffers (?). This will be used to
7757 define the macro FILE_filbuf(fp).
7758
7759 "stdio_ptr"
7760 From d_stdstdio.U:
7761
7762 This variable defines how, given a "FILE" pointer, fp, to access
7763 the _ptr field (or equivalent) of stdio.h's "FILE" structure. This
7764 will be used to define the macro FILE_ptr(fp).
7765
7766 "stdio_stream_array"
7767 From stdio_streams.U:
7768
7769 This variable tells the name of the array holding the stdio
7770 streams. Usual values include _iob, __iob, and __sF.
7771
7772 "strerror_r_proto"
7773 From d_strerror_r.U:
7774
7775 This variable encodes the prototype of strerror_r. It is zero if
7776 d_strerror_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7777 macros of reentr.h if d_strerror_r is defined.
7778
7779 "submit"
7780 From Loc.U:
7781
7782 This variable is defined but not used by Configure. The value is
7783 the empty string and is not useful.
7784
7785 "subversion"
7786 From patchlevel.U:
7787
7788 The subversion level of this package. The value of subversion
7789 comes from the patchlevel.h file. In a version number such as
7790 5.6.1, this is the 1. In patchlevel.h, this is referred to as
7791 "PERL_SUBVERSION". This is unique to perl.
7792
7793 "sysman"
7794 From sysman.U:
7795
7796 This variable holds the place where the manual is located on this
7797 system. It is not the place where the user wants to put his manual
7798 pages. Rather it is the place where Configure may look to find
7799 manual for unix commands (section 1 of the manual usually). See
7800 mansrc.
7801
7802 "sysroot"
7803 From Sysroot.U:
7804
7805 This variable is empty unless supplied by the Configure user. It
7806 can contain a path to an alternative root directory, under which
7807 headers and libraries for the compilation target can be found. This
7808 is generally used when cross-compiling using a gcc-like compiler.
7809
7810 t
7811 "tail"
7812 From Loc.U:
7813
7814 This variable is defined but not used by Configure. The value is
7815 the empty string and is not useful.
7816
7817 "taint_disabled"
7818 From define: "SILENT_NO_TAINT_SUPPORT" or "NO_TAINT_SUPPORT"
7819
7820 If this perl is compiled with support for taint mode this variable
7821 will be set to the empty string, if it was compiled with
7822 "SILENT_NO_TAINT_SUPPORT" defined then it will be set to be
7823 "silent", and if it was compiled with "NO_TAINT_SUPPORT" defined it
7824 will be 'define'. Either of the above defines will results in it
7825 being a true value. This property was added in 5.37.11. See also
7826 "taint_support".
7827
7828 "taint_support"
7829 From define: "SILENT_NO_TAINT_SUPPORT" or "NO_TAINT_SUPPORT"
7830
7831 If this perl is compiled with support for taint mode this variable
7832 will be set to 'define', if it is not it will be set to the empty
7833 string. Either of the above defines will result in it being empty.
7834 This property was added in version 5.37.11. See also
7835 "taint_disabled".
7836
7837 "tar"
7838 From Loc.U:
7839
7840 This variable is defined but not used by Configure. The value is
7841 the empty string and is not useful.
7842
7843 "targetarch"
7844 From Cross.U:
7845
7846 If cross-compiling, this variable contains the target architecture.
7847 If not, this will be empty.
7848
7849 "targetdir"
7850 From Cross.U:
7851
7852 This variable contains a path that will be created on the target
7853 host using targetmkdir, and then used to copy the cross-compiled
7854 executables to. Defaults to /tmp if not set.
7855
7856 "targetenv"
7857 From Cross.U:
7858
7859 If cross-compiling, this variable can be used to modify the
7860 environment on the target system. However, how and where it's
7861 used, and even if it's used at all, is entirely dependent on both
7862 the transport mechanism (targetrun) and what the target system is.
7863 Unless the relevant documentation says otherwise, it is genereally
7864 not useful.
7865
7866 "targethost"
7867 From Cross.U:
7868
7869 This variable contains the name of a separate host machine that can
7870 be used to run compiled test programs and perl tests on. Set to
7871 empty string if not in use.
7872
7873 "targetmkdir"
7874 From Cross.U:
7875
7876 This variable contains the command used by Configure to create a
7877 new directory on the target host.
7878
7879 "targetport"
7880 From Cross.U:
7881
7882 This variable contains the number of a network port to be used to
7883 connect to the host in targethost, if unset defaults to 22 for ssh.
7884
7885 "targetsh"
7886 From sh.U:
7887
7888 If cross-compiling, this variable contains the location of sh on
7889 the target system. If not, this will be the same as $sh.
7890
7891 "tbl"
7892 From Loc.U:
7893
7894 This variable is defined but not used by Configure. The value is
7895 the empty string and is not useful.
7896
7897 "tee"
7898 From Loc.U:
7899
7900 This variable is defined but not used by Configure. The value is
7901 the empty string and is not useful.
7902
7903 "test"
7904 From Loc.U:
7905
7906 This variable is used internally by Configure to determine the full
7907 pathname (if any) of the test program. After Configure runs, the
7908 value is reset to a plain "test" and is not useful.
7909
7910 "timeincl"
7911 From i_time.U:
7912
7913 This variable holds the full path of the included time header(s).
7914
7915 "timetype"
7916 From d_time.U:
7917
7918 This variable holds the type returned by time(). It can be long, or
7919 time_t on "BSD" sites (in which case <sys/types.h> should be
7920 included). Anyway, the type Time_t should be used.
7921
7922 "tmpnam_r_proto"
7923 From d_tmpnam_r.U:
7924
7925 This variable encodes the prototype of tmpnam_r. It is zero if
7926 d_tmpnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7927 of reentr.h if d_tmpnam_r is defined.
7928
7929 "to"
7930 From Cross.U:
7931
7932 This variable contains the command used by Configure to copy to
7933 from the target host. Useful and available only during Perl build.
7934 The string ":" if not cross-compiling.
7935
7936 "touch"
7937 From Loc.U:
7938
7939 This variable is used internally by Configure to determine the full
7940 pathname (if any) of the touch program. After Configure runs, the
7941 value is reset to a plain "touch" and is not useful.
7942
7943 "tr"
7944 From Loc.U:
7945
7946 This variable is used internally by Configure to determine the full
7947 pathname (if any) of the tr program. After Configure runs, the
7948 value is reset to a plain "tr" and is not useful.
7949
7950 "trnl"
7951 From trnl.U:
7952
7953 This variable contains the value to be passed to the tr(1) command
7954 to transliterate a newline. Typical values are "\012" and "\n".
7955 This is needed for "EBCDIC" systems where newline is not
7956 necessarily "\012".
7957
7958 "troff"
7959 From Loc.U:
7960
7961 This variable is defined but not used by Configure. The value is
7962 the empty string and is not useful.
7963
7964 "ttyname_r_proto"
7965 From d_ttyname_r.U:
7966
7967 This variable encodes the prototype of ttyname_r. It is zero if
7968 d_ttyname_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7969 of reentr.h if d_ttyname_r is defined.
7970
7971 u
7972 "u16size"
7973 From perlxv.U:
7974
7975 This variable is the size of an U16 in bytes.
7976
7977 "u16type"
7978 From perlxv.U:
7979
7980 This variable contains the C type used for Perl's U16.
7981
7982 "u32XUformat"
7983 From perlx32f.U:
7984
7985 This variable contains the format string used for printing a Perl
7986 U32 as an unsigned hexadecimal integer in uppercase "ABCDEF".
7987
7988 "u32oformat"
7989 From perlx32f.U:
7990
7991 This variable contains the format string used for printing a Perl
7992 U32 as an unsigned octal integer.
7993
7994 "u32size"
7995 From perlxv.U:
7996
7997 This variable is the size of an U32 in bytes.
7998
7999 "u32type"
8000 From perlxv.U:
8001
8002 This variable contains the C type used for Perl's U32.
8003
8004 "u32uformat"
8005 From perlx32f.U:
8006
8007 This variable contains the format string used for printing a Perl
8008 U32 as an unsigned decimal integer.
8009
8010 "u32xformat"
8011 From perlx32f.U:
8012
8013 This variable contains the format string used for printing a Perl
8014 U32 as an unsigned hexadecimal integer in lowercase abcdef.
8015
8016 "u64size"
8017 From perlxv.U:
8018
8019 This variable is the size of an U64 in bytes.
8020
8021 "u64type"
8022 From perlxv.U:
8023
8024 This variable contains the C type used for Perl's U64.
8025
8026 "u8size"
8027 From perlxv.U:
8028
8029 This variable is the size of an U8 in bytes.
8030
8031 "u8type"
8032 From perlxv.U:
8033
8034 This variable contains the C type used for Perl's U8.
8035
8036 "uidformat"
8037 From uidf.U:
8038
8039 This variable contains the format string used for printing a Uid_t.
8040
8041 "uidsign"
8042 From uidsign.U:
8043
8044 This variable contains the signedness of a uidtype. 1 for
8045 unsigned, -1 for signed.
8046
8047 "uidsize"
8048 From uidsize.U:
8049
8050 This variable contains the size of a uidtype in bytes.
8051
8052 "uidtype"
8053 From uidtype.U:
8054
8055 This variable defines Uid_t to be something like uid_t, int,
8056 ushort, or whatever type is used to declare user ids in the kernel.
8057
8058 "uname"
8059 From Loc.U:
8060
8061 This variable is used internally by Configure to determine the full
8062 pathname (if any) of the uname program. After Configure runs, the
8063 value is reset to a plain "uname" and is not useful.
8064
8065 "uniq"
8066 From Loc.U:
8067
8068 This variable is used internally by Configure to determine the full
8069 pathname (if any) of the uniq program. After Configure runs, the
8070 value is reset to a plain "uniq" and is not useful.
8071
8072 "uquadtype"
8073 From quadtype.U:
8074
8075 This variable defines Uquad_t to be something like unsigned long,
8076 unsigned int, unsigned long long, uint64_t, or whatever type is
8077 used for 64-bit integers.
8078
8079 "use64bitall"
8080 From use64bits.U:
8081
8082 This variable conditionally defines the USE_64_BIT_ALL symbol, and
8083 indicates that 64-bit integer types should be used when available.
8084 The maximal possible 64-bitness is employed: LP64 or ILP64, meaning
8085 that you will be able to use more than 2 gigabytes of memory. This
8086 mode is even more binary incompatible than USE_64_BIT_INT. You may
8087 not be able to run the resulting executable in a 32-bit "CPU" at
8088 all or you may need at least to reboot your "OS" to 64-bit mode.
8089
8090 "use64bitint"
8091 From use64bits.U:
8092
8093 This variable conditionally defines the USE_64_BIT_INT symbol, and
8094 indicates that 64-bit integer types should be used when available.
8095 The minimal possible 64-bitness is employed, just enough to get
8096 64-bit integers into Perl. This may mean using for example "long
8097 longs", while your memory may still be limited to 2 gigabytes.
8098
8099 "usecbacktrace"
8100 From usebacktrace.U:
8101
8102 This variable indicates whether we are compiling with backtrace
8103 support.
8104
8105 "usecrosscompile"
8106 From Cross.U:
8107
8108 This variable conditionally defines the "USE_CROSS_COMPILE" symbol,
8109 and indicates that Perl has been cross-compiled.
8110
8111 "usedefaultstrict"
8112 From usedefaultstrict.U:
8113
8114 This setting provides a mechanism for perl developers to enable
8115 strict by default. These defaults do not apply when perl is run via
8116 -e or -E.
8117
8118 "usedevel"
8119 From Devel.U:
8120
8121 This variable indicates that Perl was configured with development
8122 features enabled. This should not be done for production builds.
8123
8124 "usedl"
8125 From dlsrc.U:
8126
8127 This variable indicates if the system supports dynamic loading of
8128 some sort. See also dlsrc and dlobj.
8129
8130 "usedtrace"
8131 From usedtrace.U:
8132
8133 This variable indicates whether we are compiling with dtrace
8134 support. See also dtrace.
8135
8136 "usefaststdio"
8137 From usefaststdio.U:
8138
8139 This variable conditionally defines the "USE_FAST_STDIO" symbol,
8140 and indicates that Perl should be built to use "fast stdio".
8141 Defaults to define in Perls 5.8 and earlier, to undef later.
8142
8143 "useithreads"
8144 From usethreads.U:
8145
8146 This variable conditionally defines the "USE_ITHREADS" symbol, and
8147 indicates that Perl should be built to use the interpreter-based
8148 threading implementation.
8149
8150 "usekernprocpathname"
8151 From usekernprocpathname.U:
8152
8153 This variable, indicates that we can use sysctl with
8154 "KERN_PROC_PATHNAME" to get a full path for the executable, and
8155 hence convert $^X to an absolute path.
8156
8157 "uselanginfo"
8158 From Extensions.U:
8159
8160 This variable holds either "true" or "false" to indicate whether
8161 the I18N::Langinfo extension should be used. The sole use for this
8162 currently is to allow an easy mechanism for users to skip this
8163 extension from the Configure command line.
8164
8165 "uselargefiles"
8166 From uselfs.U:
8167
8168 This variable conditionally defines the "USE_LARGE_FILES" symbol,
8169 and indicates that large file interfaces should be used when
8170 available.
8171
8172 "uselongdouble"
8173 From uselongdbl.U:
8174
8175 This variable conditionally defines the "USE_LONG_DOUBLE" symbol,
8176 and indicates that long doubles should be used when available.
8177
8178 "usemallocwrap"
8179 From mallocsrc.U:
8180
8181 This variable contains y if we are wrapping malloc to prevent
8182 integer overflow during size calculations.
8183
8184 "usemorebits"
8185 From usemorebits.U:
8186
8187 This variable conditionally defines the "USE_MORE_BITS" symbol, and
8188 indicates that explicit 64-bit interfaces and long doubles should
8189 be used when available.
8190
8191 "usemultiplicity"
8192 From usemultiplicity.U:
8193
8194 This variable conditionally defines the "MULTIPLICITY" symbol, and
8195 indicates that Perl should be built to use multiplicity.
8196
8197 "usemymalloc"
8198 From mallocsrc.U:
8199
8200 This variable contains y if the malloc that comes with this package
8201 is desired over the system's version of malloc. People often
8202 include special versions of malloc for efficiency, but such
8203 versions are often less portable. See also mallocsrc and
8204 mallocobj. If this is "y", then -lmalloc is removed from $libs.
8205
8206 "usenm"
8207 From usenm.U:
8208
8209 This variable contains "true" or "false" depending whether the nm
8210 extraction is wanted or not.
8211
8212 "usensgetexecutablepath"
8213 From usensgetexecutablepath.U:
8214
8215 This symbol, if defined, indicates that we can use
8216 _NSGetExecutablePath and realpath to get a full path for the
8217 executable, and hence convert $^X to an absolute path.
8218
8219 "useopcode"
8220 From Extensions.U:
8221
8222 This variable holds either "true" or "false" to indicate whether
8223 the Opcode extension should be used. The sole use for this
8224 currently is to allow an easy mechanism for users to skip the
8225 Opcode extension from the Configure command line.
8226
8227 "useperlio"
8228 From useperlio.U:
8229
8230 This variable conditionally defines the "USE_PERLIO" symbol, and
8231 indicates that the PerlIO abstraction should be used throughout.
8232
8233 "useposix"
8234 From Extensions.U:
8235
8236 This variable holds either "true" or "false" to indicate whether
8237 the "POSIX" extension should be used. The sole use for this
8238 currently is to allow an easy mechanism for hints files to indicate
8239 that "POSIX" will not compile on a particular system.
8240
8241 "usequadmath"
8242 From usequadmath.U:
8243
8244 This variable conditionally defines the "USE_QUADMATH" symbol, and
8245 indicates that the quadmath library __float128 long doubles should
8246 be used when available.
8247
8248 "usereentrant"
8249 From usethreads.U:
8250
8251 This variable conditionally defines the "USE_REENTRANT_API" symbol,
8252 which indicates that the thread code may try to use the various _r
8253 versions of library functions. This is only potentially meaningful
8254 if usethreads is set and is very experimental, it is not even
8255 prompted for.
8256
8257 "userelocatableinc"
8258 From bin.U:
8259
8260 This variable is set to true to indicate that perl should relocate
8261 @"INC" entries at runtime based on the path to the perl binary.
8262 Any @"INC" paths starting .../ are relocated relative to the
8263 directory containing the perl binary, and a logical cleanup of the
8264 path is then made around the join point (removing dir/../ pairs)
8265
8266 "useshrplib"
8267 From libperl.U:
8268
8269 This variable is set to "true" if the user wishes to build a shared
8270 libperl, and "false" otherwise.
8271
8272 "usesitecustomize"
8273 From d_sitecustomize.U:
8274
8275 This variable is set to true when the user requires a mechanism
8276 that allows the sysadmin to add entries to @"INC" at runtime. This
8277 variable being set, makes perl run $sitelib/sitecustomize.pl at
8278 startup.
8279
8280 "usesocks"
8281 From usesocks.U:
8282
8283 This variable conditionally defines the "USE_SOCKS" symbol, and
8284 indicates that Perl should be built to use "SOCKS".
8285
8286 "usethreads"
8287 From usethreads.U:
8288
8289 This variable conditionally defines the "USE_THREADS" symbol, and
8290 indicates that Perl should be built to use threads.
8291
8292 "usevendorprefix"
8293 From vendorprefix.U:
8294
8295 This variable tells whether the vendorprefix and consequently other
8296 vendor* paths are in use.
8297
8298 "useversionedarchname"
8299 From archname.U:
8300
8301 This variable indicates whether to include the $api_versionstring
8302 as a component of the $archname.
8303
8304 "usevfork"
8305 From d_vfork.U:
8306
8307 This variable is set to true when the user accepts to use vfork.
8308 It is set to false when no vfork is available or when the user
8309 explicitly requests not to use vfork.
8310
8311 "usrinc"
8312 From usrinc.U:
8313
8314 This variable holds the path of the include files, which is usually
8315 /usr/include. It is mainly used by other Configure units.
8316
8317 "uuname"
8318 From Loc.U:
8319
8320 This variable is defined but not used by Configure. The value is
8321 the empty string and is not useful.
8322
8323 "uvXUformat"
8324 From perlxvf.U:
8325
8326 This variable contains the format string used for printing a Perl
8327 "UV" as an unsigned hexadecimal integer in uppercase "ABCDEF".
8328
8329 "uvoformat"
8330 From perlxvf.U:
8331
8332 This variable contains the format string used for printing a Perl
8333 "UV" as an unsigned octal integer.
8334
8335 "uvsize"
8336 From perlxv.U:
8337
8338 This variable is the size of a "UV" in bytes.
8339
8340 "uvtype"
8341 From perlxv.U:
8342
8343 This variable contains the C type used for Perl's "UV".
8344
8345 "uvuformat"
8346 From perlxvf.U:
8347
8348 This variable contains the format string used for printing a Perl
8349 "UV" as an unsigned decimal integer.
8350
8351 "uvxformat"
8352 From perlxvf.U:
8353
8354 This variable contains the format string used for printing a Perl
8355 "UV" as an unsigned hexadecimal integer in lowercase abcdef.
8356
8357 v
8358 "vendorarch"
8359 From vendorarch.U:
8360
8361 This variable contains the value of the "PERL_VENDORARCH" symbol.
8362 It may have a ~ on the front. The standard distribution will put
8363 nothing in this directory. Vendors who distribute perl may wish to
8364 place their own architecture-dependent modules and extensions in
8365 this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or
8366 equivalent. See "INSTALL" for details.
8367
8368 "vendorarchexp"
8369 From vendorarch.U:
8370
8371 This variable is the ~name expanded version of vendorarch, so that
8372 you may use it directly in Makefiles or shell scripts.
8373
8374 "vendorbin"
8375 From vendorbin.U:
8376
8377 This variable contains the eventual value of the "VENDORBIN"
8378 symbol. It may have a ~ on the front. The standard distribution
8379 will put nothing in this directory. Vendors who distribute perl
8380 may wish to place additional binaries in this directory with
8381 MakeMaker Makefile.PL "INSTALLDIRS"=vendor or equivalent. See
8382 "INSTALL" for details.
8383
8384 "vendorbinexp"
8385 From vendorbin.U:
8386
8387 This variable is the ~name expanded version of vendorbin, so that
8388 you may use it directly in Makefiles or shell scripts.
8389
8390 "vendorhtml1dir"
8391 From vendorhtml1dir.U:
8392
8393 This variable contains the name of the directory for html pages.
8394 It may have a ~ on the front. The standard distribution will put
8395 nothing in this directory. Vendors who distribute perl may wish to
8396 place their own html pages in this directory with MakeMaker
8397 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
8398 details.
8399
8400 "vendorhtml1direxp"
8401 From vendorhtml1dir.U:
8402
8403 This variable is the ~name expanded version of vendorhtml1dir, so
8404 that you may use it directly in Makefiles or shell scripts.
8405
8406 "vendorhtml3dir"
8407 From vendorhtml3dir.U:
8408
8409 This variable contains the name of the directory for html library
8410 pages. It may have a ~ on the front. The standard distribution
8411 will put nothing in this directory. Vendors who distribute perl
8412 may wish to place their own html pages for modules and extensions
8413 in this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor
8414 or equivalent. See "INSTALL" for details.
8415
8416 "vendorhtml3direxp"
8417 From vendorhtml3dir.U:
8418
8419 This variable is the ~name expanded version of vendorhtml3dir, so
8420 that you may use it directly in Makefiles or shell scripts.
8421
8422 "vendorlib"
8423 From vendorlib.U:
8424
8425 This variable contains the eventual value of the "VENDORLIB"
8426 symbol, which is the name of the private library for this package.
8427 The standard distribution will put nothing in this directory.
8428 Vendors who distribute perl may wish to place their own modules in
8429 this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or
8430 equivalent. See "INSTALL" for details.
8431
8432 "vendorlib_stem"
8433 From vendorlib.U:
8434
8435 This variable is $vendorlibexp with any trailing version-specific
8436 component removed. The elements in inc_version_list
8437 (inc_version_list.U) can be tacked onto this variable to generate a
8438 list of directories to search.
8439
8440 "vendorlibexp"
8441 From vendorlib.U:
8442
8443 This variable is the ~name expanded version of vendorlib, so that
8444 you may use it directly in Makefiles or shell scripts.
8445
8446 "vendorman1dir"
8447 From vendorman1dir.U:
8448
8449 This variable contains the name of the directory for man1 pages.
8450 It may have a ~ on the front. The standard distribution will put
8451 nothing in this directory. Vendors who distribute perl may wish to
8452 place their own man1 pages in this directory with MakeMaker
8453 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
8454 details.
8455
8456 "vendorman1direxp"
8457 From vendorman1dir.U:
8458
8459 This variable is the ~name expanded version of vendorman1dir, so
8460 that you may use it directly in Makefiles or shell scripts.
8461
8462 "vendorman3dir"
8463 From vendorman3dir.U:
8464
8465 This variable contains the name of the directory for man3 pages.
8466 It may have a ~ on the front. The standard distribution will put
8467 nothing in this directory. Vendors who distribute perl may wish to
8468 place their own man3 pages in this directory with MakeMaker
8469 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
8470 details.
8471
8472 "vendorman3direxp"
8473 From vendorman3dir.U:
8474
8475 This variable is the ~name expanded version of vendorman3dir, so
8476 that you may use it directly in Makefiles or shell scripts.
8477
8478 "vendorprefix"
8479 From vendorprefix.U:
8480
8481 This variable holds the full absolute path of the directory below
8482 which the vendor will install add-on packages. See "INSTALL" for
8483 usage and examples.
8484
8485 "vendorprefixexp"
8486 From vendorprefix.U:
8487
8488 This variable holds the full absolute path of the directory below
8489 which the vendor will install add-on packages. Derived from
8490 vendorprefix.
8491
8492 "vendorscript"
8493 From vendorscript.U:
8494
8495 This variable contains the eventual value of the "VENDORSCRIPT"
8496 symbol. It may have a ~ on the front. The standard distribution
8497 will put nothing in this directory. Vendors who distribute perl
8498 may wish to place additional executable scripts in this directory
8499 with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or equivalent. See
8500 "INSTALL" for details.
8501
8502 "vendorscriptexp"
8503 From vendorscript.U:
8504
8505 This variable is the ~name expanded version of vendorscript, so
8506 that you may use it directly in Makefiles or shell scripts.
8507
8508 "version"
8509 From patchlevel.U:
8510
8511 The full version number of this package, such as 5.6.1 (or 5_6_1).
8512 This combines revision, patchlevel, and subversion to get the full
8513 version number, including any possible subversions. This is
8514 suitable for use as a directory name, and hence is filesystem
8515 dependent.
8516
8517 "version_patchlevel_string"
8518 From patchlevel.U:
8519
8520 This is a string combining version, subversion and perl_patchlevel
8521 (if perl_patchlevel is non-zero). It is typically something like
8522 'version 7 subversion 1' or 'version 7 subversion 1 patchlevel
8523 11224' It is computed here to avoid duplication of code in
8524 myconfig.SH and lib/Config.pm.
8525
8526 "versiononly"
8527 From versiononly.U:
8528
8529 If set, this symbol indicates that only the version-specific
8530 components of a perl installation should be installed. This may be
8531 useful for making a test installation of a new version without
8532 disturbing the existing installation. Setting versiononly is
8533 equivalent to setting installperl's -v option. In particular, the
8534 non-versioned scripts and programs such as a2p, c2ph, h2xs, pod2*,
8535 and perldoc are not installed (see "INSTALL" for a more complete
8536 list). Nor are the man pages installed. Usually, this is undef.
8537
8538 "vi"
8539 From Loc.U:
8540
8541 This variable is defined but not used by Configure. The value is
8542 the empty string and is not useful.
8543
8544 x
8545 "xlibpth"
8546 From libpth.U:
8547
8548 This variable holds extra path (space-separated) used to find
8549 libraries on this platform, for example "CPU"-specific libraries
8550 (on multi-"CPU" platforms) may be listed here.
8551
8552 "xlocale_needed"
8553 From d_newlocale.U:
8554
8555 This symbol, if defined, indicates that the C program should
8556 include <xlocale.h> to get newlocale() and its friends.
8557
8558 y
8559 "yacc"
8560 From yacc.U:
8561
8562 This variable holds the name of the compiler compiler we want to
8563 use in the Makefile. It can be yacc, byacc, or bison -y.
8564
8565 "yaccflags"
8566 From yacc.U:
8567
8568 This variable contains any additional yacc flags desired by the
8569 user. It is up to the Makefile to use this.
8570
8571 z
8572 "zcat"
8573 From Loc.U:
8574
8575 This variable is defined but not used by Configure. The value is
8576 the empty string and is not useful.
8577
8578 "zip"
8579 From Loc.U:
8580
8581 This variable is used internally by Configure to determine the full
8582 pathname (if any) of the zip program. After Configure runs, the
8583 value is reset to a plain "zip" and is not useful.
8584
8586 Information on the git commit from which the current perl binary was
8587 compiled can be found in the variable $Config::Git_Data. The variable
8588 is a structured string that looks something like this:
8589
8590 git_commit_id='ea0c2dbd5f5ac6845ecc7ec6696415bf8e27bd52'
8591 git_describe='GitLive-blead-1076-gea0c2db'
8592 git_branch='smartmatch'
8593 git_uncommitted_changes=''
8594 git_commit_id_title='Commit id:'
8595 git_commit_date='2009-05-09 17:47:31 +0200'
8596
8597 Its format is not guaranteed not to change over time.
8598
8600 This module contains a good example of how to use tie to implement a
8601 cache and an example of how to make a tied variable readonly to those
8602 outside of it.
8603
8604
8605
8606perl v5.38.2 2023-11-30 Config(3pm)