1Config(3pm) Perl Programmers Reference Guide Config(3pm)
2
6 Config - access Perl configuration information
7
9 use Config;
10 if ($Config{usethreads}) {
11 print "has thread support\n"
12 }
13 use Config qw(myconfig config_sh config_vars config_re);
15 print myconfig();
17 print config_sh();
19 print config_re();
21 config_vars(qw(osname archname));
23
25 The Config module contains all the information that was available to
26 the Configure program at Perl build time (over 900 values).
27 Shell variables from the config.sh file (written by Configure) are
29 stored in the readonly-variable %Config, indexed by their names.
30 Values stored in config.sh as 'undef' are returned as undefined values.
32 The perl "exists" function can be used to check if a named variable
33 exists.
34 For a description of the variables, please have a look at the Glossary
36 file, as written in the Porting folder, or use the url:
37 https://github.com/Perl/perl5/blob/blead/Porting/Glossary
38 myconfig()
40 Returns a textual summary of the major perl configuration values.
41 See also "-V" in "Command Switches" in perlrun.
42 config_sh()
44 Returns the entire perl configuration information in the form of
45 the original config.sh shell variable assignment script.
46 config_re($regex)
48 Like config_sh() but returns, as a list, only the config entries
49 who's names match the $regex.
50 config_vars(@names)
52 Prints to STDOUT the values of the named configuration variable.
53 Each is printed on a separate line in the form:
54 name='value';
56 Names which are unknown are output as "name='UNKNOWN';". See also
58 "-V:name" in "Command Switches" in perlrun.
59 bincompat_options()
61 Returns a list of C pre-processor options used when compiling this
62 perl binary, which affect its binary compatibility with extensions.
63 bincompat_options() and non_bincompat_options() are shown together
64 in the output of "perl -V" as Compile-time options.
65 non_bincompat_options()
67 Returns a list of C pre-processor options used when compiling this
68 perl binary, which do not affect binary compatibility with
69 extensions.
70 compile_date()
72 Returns the compile date (as a string), equivalent to what is shown
73 by "perl -V"
74 local_patches()
76 Returns a list of the names of locally applied patches, equivalent
77 to what is shown by "perl -V".
78 header_files()
80 Returns a list of the header files that should be used as
81 dependencies for XS code, for this version of Perl on this
82 platform.
83
85 Here's a more sophisticated example of using %Config:
86 use Config;
88 use strict;
89 my %sig_num;
91 my @sig_name;
92 unless($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 print "signal #17 = $sig_name[17]\n";
103 if ($sig_num{ALRM}) {
104 print "SIGALRM is $sig_num{ALRM}\n";
105 }
106
108 Because this information is not stored within the perl executable
109 itself it is possible (but unlikely) that the information does not
110 relate to the actual perl binary which is being used to access it.
111 The Config module is installed into the architecture and version
113 specific library directory ($Config{installarchlib}) and it checks the
114 perl version number when loaded.
115 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 P
134 "PERL_API_REVISION"
135 From patchlevel.h:
136 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 "PERL_API_SUBVERSION"
144 From patchlevel.h:
145 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 "PERL_API_VERSION"
153 From patchlevel.h:
154 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 "PERL_CONFIG_SH"
162 From Oldsyms.U:
163 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 "PERL_PATCHLEVEL"
168 From Oldsyms.U:
169 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 "PERL_REVISION"
175 From Oldsyms.U:
176 In a Perl version number such as 5.6.2, this is the 5. This value
178 is manually set in patchlevel.h
179 "PERL_SUBVERSION"
181 From Oldsyms.U:
182 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 "PERL_VERSION"
188 From Oldsyms.U:
189 In a Perl version number such as 5.6.2, this is the 6. This value
191 is manually set in patchlevel.h
192 _
194 "_a"
195 From Unix.U:
196 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 "_exe"
202 From Unix.U:
203 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 "_o"
210 From Unix.U:
211 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 a
217 "afs"
218 From afs.U:
219 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 "afsroot"
226 From afs.U:
227 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 "alignbytes"
234 From alignbytes.U:
235 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 "aphostname"
241 From d_gethname.U:
242 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 "api_revision"
248 From patchlevel.U:
249 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 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 "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 "api_subversion"
274 From patchlevel.U:
275 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 "api_version"
282 From patchlevel.U:
283 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 "api_versionstring"
293 From patchlevel.U:
294 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 "ar"
300 From Loc.U:
301 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 "archlib"
307 From archlib.U:
308 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 "archlibexp"
316 From archlib.U:
317 This variable is the same as the archlib variable, but is filename
319 expanded at configuration time, for convenient use.
320 "archname"
322 From archname.U:
323 This variable is a short name to characterize the current
325 architecture. It is used mainly to construct the default archlib.
326 "archname64"
328 From use64bits.U:
329 This variable is used for the 64-bitness part of $archname.
331 "archobjs"
333 From Unix.U:
334 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 "asctime_r_proto"
342 From d_asctime_r.U:
343 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 "awk"
349 From Loc.U:
350 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 b
356 "baserev"
357 From baserev.U:
358 The base revision level of this package, from the .package file.
360 "bash"
362 From Loc.U:
363 This variable is defined but not used by Configure. The value is
365 the empty string and is not useful.
366 "bin"
368 From bin.U:
369 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 "bin_ELF"
377 From dlsrc.U:
378 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 "binexp"
384 From bin.U:
385 This is the same as the bin variable, but is filename expanded at
387 configuration time, for use in your makefiles.
388 "bison"
390 From Loc.U:
391 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 "byacc"
397 From Loc.U:
398 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 "byteorder"
404 From byteorder.U:
405 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 c
412 "c" From n.U:
413 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 "castflags"
419 From d_castneg.U:
420 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 "cat"
427 From Loc.U:
428 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 "cc"
434 From cc.U:
435 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 "cccdlflags"
442 From dlsrc.U:
443 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 "ccdlflags"
450 From dlsrc.U:
451 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 "ccflags"
458 From ccflags.U:
459 This variable contains any additional C compiler flags desired by
461 the user. It is up to the Makefile to use this.
462 "ccflags_uselargefiles"
464 From uselfs.U:
465 This variable contains the compiler flags needed by large file
467 builds and added to ccflags by hints files.
468 "ccname"
470 From Checkcc.U:
471 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 "ccsymbols"
479 From Cppsym.U:
480 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 "ccversion"
487 From Checkcc.U:
488 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 "cf_by"
494 From cf_who.U:
495 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 "cf_email"
500 From cf_email.U:
501 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 "cf_time"
506 From cf_who.U:
507 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 "charbits"
512 From charsize.U:
513 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 "charsize"
518 From charsize.U:
519 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 "chgrp"
524 From Loc.U:
525 This variable is defined but not used by Configure. The value is
527 the empty string and is not useful.
528 "chmod"
530 From Loc.U:
531 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 "chown"
537 From Loc.U:
538 This variable is defined but not used by Configure. The value is
540 the empty string and is not useful.
541 "clocktype"
543 From d_times.U:
544 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 "comm"
550 From Loc.U:
551 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 "compiler_warning"
557 From compiler_warning.U:
558 This variable holds the command to check if the file specified as a
560 parameter contains a compiler warning
561 "compress"
563 From Loc.U:
564 This variable is defined but not used by Configure. The value is
566 the empty string and is not useful.
567 "config_arg0"
569 From Options.U:
570 This variable contains the string used to invoke the Configure
572 command, as reported by the shell in the $0 variable.
573 "config_argc"
575 From Options.U:
576 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 "config_args"
583 From Options.U:
584 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 "contains"
592 From contains.U:
593 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 "cp"
600 From Loc.U:
601 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 "cpio"
607 From Loc.U:
608 This variable is defined but not used by Configure. The value is
610 the empty string and is not useful.
611 "cpp"
613 From Loc.U:
614 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 "cpp_stuff"
620 From cpp_stuff.U:
621 This variable contains an identification of the concatenation
623 mechanism used by the C preprocessor.
624 "cppccsymbols"
626 From Cppsym.U:
627 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 "cppflags"
634 From ccflags.U:
635 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 "cpplast"
640 From cppstdin.U:
641 This variable has the same functionality as cppminus, only it
643 applies to cpprun and not cppstdin.
644 "cppminus"
646 From cppstdin.U:
647 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 "cpprun"
654 From cppstdin.U:
655 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 "cppstdin"
664 From cppstdin.U:
665 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 "cppsymbols"
672 From Cppsym.U:
673 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 "crypt_r_proto"
680 From d_crypt_r.U:
681 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 "cryptlib"
687 From d_crypt.U:
688 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 "csh"
694 From Loc.U:
695 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 "ctermid_r_proto"
701 From d_ctermid_r.U:
702 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 "ctime_r_proto"
708 From d_ctime_r.U:
709 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 d
715 "d_Gconvert"
716 From d_gconvert.U:
717 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 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 "d_PRIEUldbl"
737 From longdblfio.U:
738 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 "d_PRIFUldbl"
745 From longdblfio.U:
746 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 "d_PRIGUldbl"
753 From longdblfio.U:
754 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 "d_PRIXU64"
761 From quadfio.U:
762 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 "d_PRId64"
769 From quadfio.U:
770 This variable conditionally defines the PERL_PRId64 symbol, which
772 indicates that stdio has a symbol to print 64-bit decimal numbers.
773 "d_PRIeldbl"
775 From longdblfio.U:
776 This variable conditionally defines the PERL_PRIfldbl symbol, which
778 indicates that stdio has a symbol to print long doubles.
779 "d_PRIfldbl"
781 From longdblfio.U:
782 This variable conditionally defines the PERL_PRIfldbl symbol, which
784 indicates that stdio has a symbol to print long doubles.
785 "d_PRIgldbl"
787 From longdblfio.U:
788 This variable conditionally defines the PERL_PRIfldbl symbol, which
790 indicates that stdio has a symbol to print long doubles.
791 "d_PRIi64"
793 From quadfio.U:
794 This variable conditionally defines the PERL_PRIi64 symbol, which
796 indicates that stdio has a symbol to print 64-bit decimal numbers.
797 "d_PRIo64"
799 From quadfio.U:
800 This variable conditionally defines the PERL_PRIo64 symbol, which
802 indicates that stdio has a symbol to print 64-bit octal numbers.
803 "d_PRIu64"
805 From quadfio.U:
806 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 "d_PRIx64"
812 From quadfio.U:
813 This variable conditionally defines the PERL_PRIx64 symbol, which
815 indicates that stdio has a symbol to print 64-bit hexadecimal
816 numbers.
817 "d_SCNfldbl"
819 From longdblfio.U:
820 This variable conditionally defines the PERL_PRIfldbl symbol, which
822 indicates that stdio has a symbol to scan long doubles.
823 "d__fwalk"
825 From d__fwalk.U:
826 This variable conditionally defines "HAS__FWALK" if _fwalk() is
828 available to apply a function to all the file handles.
829 "d_accept4"
831 From d_accept4.U:
832 This variable conditionally defines HAS_ACCEPT4 if accept4() is
834 available to accept socket connections.
835 "d_access"
837 From d_access.U:
838 This variable conditionally defines "HAS_ACCESS" if the access()
840 system call is available to check for access permissions using real
841 IDs.
842 "d_accessx"
844 From d_accessx.U:
845 This variable conditionally defines the "HAS_ACCESSX" symbol, which
847 indicates to the C program that the accessx() routine is available.
848 "d_acosh"
850 From d_acosh.U:
851 This variable conditionally defines the "HAS_ACOSH" symbol, which
853 indicates to the C program that the acosh() routine is available.
854 "d_aintl"
856 From d_aintl.U:
857 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 "d_alarm"
863 From d_alarm.U:
864 This variable conditionally defines the "HAS_ALARM" symbol, which
866 indicates to the C program that the alarm() routine is available.
867 "d_archlib"
869 From archlib.U:
870 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 "d_asctime64"
876 From d_timefuncs64.U:
877 This variable conditionally defines the HAS_ASCTIME64 symbol, which
879 indicates to the C program that the asctime64 () routine is
880 available.
881 "d_asctime_r"
883 From d_asctime_r.U:
884 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 "d_asinh"
890 From d_asinh.U:
891 This variable conditionally defines the "HAS_ASINH" symbol, which
893 indicates to the C program that the asinh() routine is available.
894 "d_atanh"
896 From d_atanh.U:
897 This variable conditionally defines the "HAS_ATANH" symbol, which
899 indicates to the C program that the atanh() routine is available.
900 "d_atolf"
902 From atolf.U:
903 This variable conditionally defines the "HAS_ATOLF" symbol, which
905 indicates to the C program that the atolf() routine is available.
906 "d_atoll"
908 From atoll.U:
909 This variable conditionally defines the "HAS_ATOLL" symbol, which
911 indicates to the C program that the atoll() routine is available.
912 "d_attribute_always_inline"
914 From d_attribut.U:
915 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 "d_attribute_deprecated"
921 From d_attribut.U:
922 This variable conditionally defines "HASATTRIBUTE_DEPRECATED",
924 which indicates that "GCC" can handle the attribute for marking
925 deprecated APIs
926 "d_attribute_format"
928 From d_attribut.U:
929 This variable conditionally defines "HASATTRIBUTE_FORMAT", which
931 indicates the C compiler can check for printf-like formats.
932 "d_attribute_malloc"
934 From d_attribut.U:
935 This variable conditionally defines "HASATTRIBUTE_MALLOC", which
937 indicates the C compiler can understand functions as having malloc-
938 like semantics.
939 "d_attribute_nonnull"
941 From d_attribut.U:
942 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 "d_attribute_noreturn"
948 From d_attribut.U:
949 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 "d_attribute_pure"
955 From d_attribut.U:
956 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 "d_attribute_unused"
963 From d_attribut.U:
964 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 "d_attribute_visibility"
971 From d_attribut.U:
972 This variable conditionally defines the "HASATTRIBUTE_VISIBILITY"
974 symbol, and indicates different "GCC" attribute visibility
975 "d_attribute_warn_unused_result"
977 From d_attribut.U:
978 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 "d_backtrace"
985 From d_backtrace.U:
986 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 "d_bsd"
992 From Guess.U:
993 This symbol conditionally defines the symbol "BSD" when running on
995 a "BSD" system.
996 "d_bsdgetpgrp"
998 From d_getpgrp.U:
999 This variable conditionally defines "USE_BSD_GETPGRP" if getpgrp
1001 needs one arguments whereas "USG" one needs none.
1002 "d_bsdsetpgrp"
1004 From d_setpgrp.U:
1005 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 "d_builtin_add_overflow"
1011 From d_builtin_overflow.U:
1012 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 "d_builtin_choose_expr"
1019 From d_builtin.U:
1020 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 "d_builtin_expect"
1029 From d_builtin.U:
1030 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 "d_builtin_mul_overflow"
1037 From d_builtin_overflow.U:
1038 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 "d_builtin_sub_overflow"
1045 From d_builtin_overflow.U:
1046 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 "d_c99_variadic_macros"
1053 From d_c99_variadic.U:
1054 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 "d_casti32"
1060 From d_casti32.U:
1061 This variable conditionally defines CASTI32, which indicates
1063 whether the C compiler can cast large floats to 32-bit ints.
1064 "d_castneg"
1066 From d_castneg.U:
1067 This variable conditionally defines "CASTNEG", which indicates
1069 whether the C compiler can cast negative float to unsigned.
1070 "d_cbrt"
1072 From d_cbrt.U:
1073 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 "d_chown"
1079 From d_chown.U:
1080 This variable conditionally defines the "HAS_CHOWN" symbol, which
1082 indicates to the C program that the chown() routine is available.
1083 "d_chroot"
1085 From d_chroot.U:
1086 This variable conditionally defines the "HAS_CHROOT" symbol, which
1088 indicates to the C program that the chroot() routine is available.
1089 "d_chsize"
1091 From d_chsize.U:
1092 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 "d_class"
1098 From d_class.U:
1099 This variable conditionally defines the "HAS_CLASS" symbol, which
1101 indicates to the C program that the class() routine is available.
1102 "d_clearenv"
1104 From d_clearenv.U:
1105 This variable conditionally defines the "HAS_CLEARENV" symbol,
1107 which indicates to the C program that the clearenv () routine is
1108 available.
1109 "d_closedir"
1111 From d_closedir.U:
1112 This variable conditionally defines "HAS_CLOSEDIR" if closedir() is
1114 available.
1115 "d_cmsghdr_s"
1117 From d_cmsghdr_s.U:
1118 This variable conditionally defines the "HAS_STRUCT_CMSGHDR"
1120 symbol, which indicates that the struct cmsghdr is supported.
1121 "d_copysign"
1123 From d_copysign.U:
1124 This variable conditionally defines the "HAS_COPYSIGN" symbol,
1126 which indicates to the C program that the copysign() routine is
1127 available.
1128 "d_copysignl"
1130 From d_copysignl.U:
1131 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 "d_cplusplus"
1137 From d_cplusplus.U:
1138 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 "d_crypt"
1144 From d_crypt.U:
1145 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 "d_crypt_r"
1151 From d_crypt_r.U:
1152 This variable conditionally defines the "HAS_CRYPT_R" symbol, which
1154 indicates to the C program that the crypt_r() routine is available.
1155 "d_csh"
1157 From d_csh.U:
1158 This variable conditionally defines the "CSH" symbol, which
1160 indicates to the C program that the C-shell exists.
1161 "d_ctermid"
1163 From d_ctermid.U:
1164 This variable conditionally defines "CTERMID" if ctermid() is
1166 available to generate filename for terminal.
1167 "d_ctermid_r"
1169 From d_ctermid_r.U:
1170 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 "d_ctime64"
1176 From d_timefuncs64.U:
1177 This variable conditionally defines the HAS_CTIME64 symbol, which
1179 indicates to the C program that the ctime64 () routine is
1180 available.
1181 "d_ctime_r"
1183 From d_ctime_r.U:
1184 This variable conditionally defines the "HAS_CTIME_R" symbol, which
1186 indicates to the C program that the ctime_r() routine is available.
1187 "d_cuserid"
1189 From d_cuserid.U:
1190 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 "d_dbminitproto"
1196 From d_dbminitproto.U:
1197 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 "d_difftime"
1204 From d_difftime.U:
1205 This variable conditionally defines the "HAS_DIFFTIME" symbol,
1207 which indicates to the C program that the difftime() routine is
1208 available.
1209 "d_difftime64"
1211 From d_timefuncs64.U:
1212 This variable conditionally defines the HAS_DIFFTIME64 symbol,
1214 which indicates to the C program that the difftime64 () routine is
1215 available.
1216 "d_dir_dd_fd"
1218 From d_dir_dd_fd.U:
1219 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 "d_dirfd"
1225 From d_dirfd.U:
1226 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 "d_dirnamlen"
1232 From i_dirent.U:
1233 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 "d_dladdr"
1239 From d_dladdr.U:
1240 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 "d_dlerror"
1246 From d_dlerror.U:
1247 This variable conditionally defines the "HAS_DLERROR" symbol, which
1249 indicates to the C program that the dlerror() routine is available.
1250 "d_dlopen"
1252 From d_dlopen.U:
1253 This variable conditionally defines the "HAS_DLOPEN" symbol, which
1255 indicates to the C program that the dlopen() routine is available.
1256 "d_dlsymun"
1258 From d_dlsymun.U:
1259 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 "d_dosuid"
1265 From d_dosuid.U:
1266 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 "d_double_has_inf"
1272 From longdblfio.U:
1273 This variable conditionally defines the symbol "DOUBLE_HAS_INF"
1275 which indicates that the double type has an infinity.
1276 "d_double_has_nan"
1278 From longdblfio.U:
1279 This variable conditionally defines the symbol "DOUBLE_HAS_NAN"
1281 which indicates that the double type has a not-a-number.
1282 "d_double_has_negative_zero"
1284 From longdblfio.U:
1285 This variable conditionally defines the symbol
1287 "DOUBLE_HAS_NEGATIVE_ZERO" which indicates that the double type has
1288 a negative zero.
1289 "d_double_has_subnormals"
1291 From longdblfio.U:
1292 This variable conditionally defines the symbol
1294 "DOUBLE_HAS_SUBNORMALS" which indicates that the double type has
1295 subnormals (denormals).
1296 "d_double_style_cray"
1298 From longdblfio.U:
1299 This variable conditionally defines the symbol "DOUBLE_STYLE_CRAY"
1301 which indicates that the double is the 64-bit "CRAY" mainframe
1302 format.
1303 "d_double_style_ibm"
1305 From longdblfio.U:
1306 This variable conditionally defines the symbol "DOUBLE_STYLE_IBM",
1308 which indicates that the double is the 64-bit "IBM" mainframe
1309 format.
1310 "d_double_style_ieee"
1312 From longdblfio.U:
1313 This variable conditionally defines the symbol "DOUBLE_STYLE_IEEE",
1315 which indicates that the double is the 64-bit "IEEE" 754.
1316 "d_double_style_vax"
1318 From longdblfio.U:
1319 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 "d_drand48_r"
1324 From d_drand48_r.U:
1325 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 "d_drand48proto"
1331 From d_drand48proto.U:
1332 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 "d_dup2"
1339 From d_dup2.U:
1340 This variable conditionally defines HAS_DUP2 if dup2() is available
1342 to duplicate file descriptors.
1343 "d_dup3"
1345 From d_dup3.U:
1346 This variable conditionally defines HAS_DUP3 if dup3() is available
1348 to duplicate file descriptors.
1349 "d_duplocale"
1351 From d_newlocale.U:
1352 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 "d_eaccess"
1358 From d_eaccess.U:
1359 This variable conditionally defines the "HAS_EACCESS" symbol, which
1361 indicates to the C program that the eaccess() routine is available.
1362 "d_endgrent"
1364 From d_endgrent.U:
1365 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 "d_endgrent_r"
1371 From d_endgrent_r.U:
1372 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 "d_endhent"
1378 From d_endhent.U:
1379 This variable conditionally defines "HAS_ENDHOSTENT" if
1381 endhostent() is available to close whatever was being used for host
1382 queries.
1383 "d_endhostent_r"
1385 From d_endhostent_r.U:
1386 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 "d_endnent"
1392 From d_endnent.U:
1393 This variable conditionally defines "HAS_ENDNETENT" if endnetent()
1395 is available to close whatever was being used for network queries.
1396 "d_endnetent_r"
1398 From d_endnetent_r.U:
1399 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 "d_endpent"
1405 From d_endpent.U:
1406 This variable conditionally defines "HAS_ENDPROTOENT" if
1408 endprotoent() is available to close whatever was being used for
1409 protocol queries.
1410 "d_endprotoent_r"
1412 From d_endprotoent_r.U:
1413 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 "d_endpwent"
1419 From d_endpwent.U:
1420 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 "d_endpwent_r"
1426 From d_endpwent_r.U:
1427 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 "d_endsent"
1433 From d_endsent.U:
1434 This variable conditionally defines "HAS_ENDSERVENT" if
1436 endservent() is available to close whatever was being used for
1437 service queries.
1438 "d_endservent_r"
1440 From d_endservent_r.U:
1441 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 "d_eofnblk"
1447 From nblock_io.U:
1448 This variable conditionally defines "EOF_NONBLOCK" if "EOF" can be
1450 seen when reading from a non-blocking I/O source.
1451 "d_erf"
1453 From d_erf.U:
1454 This variable conditionally defines the "HAS_ERF" symbol, which
1456 indicates to the C program that the erf() routine is available.
1457 "d_erfc"
1459 From d_erfc.U:
1460 This variable conditionally defines the "HAS_ERFC" symbol, which
1462 indicates to the C program that the erfc() routine is available.
1463 "d_eunice"
1465 From Guess.U:
1466 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 "d_exp2"
1472 From d_exp2.U:
1473 This variable conditionally defines the HAS_EXP2 symbol, which
1475 indicates to the C program that the exp2() routine is available.
1476 "d_expm1"
1478 From d_expm1.U:
1479 This variable conditionally defines the HAS_EXPM1 symbol, which
1481 indicates to the C program that the expm1() routine is available.
1482 "d_faststdio"
1484 From d_faststdio.U:
1485 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 "d_fchdir"
1491 From d_fchdir.U:
1492 This variable conditionally defines the "HAS_FCHDIR" symbol, which
1494 indicates to the C program that the fchdir() routine is available.
1495 "d_fchmod"
1497 From d_fchmod.U:
1498 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 "d_fchmodat"
1504 From d_fsat.U:
1505 This variable conditionally defines the "HAS_FCHMODAT" symbol,
1507 which indicates the "POSIX" fchmodat() function is available.
1508 "d_fchown"
1510 From d_fchown.U:
1511 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 "d_fcntl"
1517 From d_fcntl.U:
1518 This variable conditionally defines the "HAS_FCNTL" symbol, and
1520 indicates whether the fcntl() function exists
1521 "d_fcntl_can_lock"
1523 From d_fcntl_can_lock.U:
1524 This variable conditionally defines the "FCNTL_CAN_LOCK" symbol and
1526 indicates whether file locking with fcntl() works.
1527 "d_fd_macros"
1529 From d_fd_set.U:
1530 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 "d_fd_set"
1536 From d_fd_set.U:
1537 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 "d_fdclose"
1543 From d_fdclose.U:
1544 This variable conditionally defines the "HAS_FDCLOSE" symbol, which
1546 indicates to the C program that the fdclose() routine is available.
1547 "d_fdim"
1549 From d_fdim.U:
1550 This variable conditionally defines the "HAS_FDIM" symbol, which
1552 indicates to the C program that the fdim() routine is available.
1553 "d_fds_bits"
1555 From d_fd_set.U:
1556 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 "d_fegetround"
1565 From d_fegetround.U:
1566 This variable conditionally defines "HAS_FEGETROUND" if
1568 fegetround() is available to get the floating point rounding mode.
1569 "d_ffs"
1571 From d_ffs.U:
1572 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 "d_ffsl"
1578 From d_ffs.U:
1579 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 "d_fgetpos"
1585 From d_fgetpos.U:
1586 This variable conditionally defines "HAS_FGETPOS" if fgetpos() is
1588 available to get the file position indicator.
1589 "d_finite"
1591 From d_finite.U:
1592 This variable conditionally defines the "HAS_FINITE" symbol, which
1594 indicates to the C program that the finite() routine is available.
1595 "d_finitel"
1597 From d_finitel.U:
1598 This variable conditionally defines the "HAS_FINITEL" symbol, which
1600 indicates to the C program that the finitel() routine is available.
1601 "d_flexfnam"
1603 From d_flexfnam.U:
1604 This variable conditionally defines the "FLEXFILENAMES" symbol,
1606 which indicates that the system supports filenames longer than 14
1607 characters.
1608 "d_flock"
1610 From d_flock.U:
1611 This variable conditionally defines "HAS_FLOCK" if flock() is
1613 available to do file locking.
1614 "d_flockproto"
1616 From d_flockproto.U:
1617 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 "d_fma"
1624 From d_fma.U:
1625 This variable conditionally defines the "HAS_FMA" symbol, which
1627 indicates to the C program that the fma() routine is available.
1628 "d_fmax"
1630 From d_fmax.U:
1631 This variable conditionally defines the "HAS_FMAX" symbol, which
1633 indicates to the C program that the fmax() routine is available.
1634 "d_fmin"
1636 From d_fmin.U:
1637 This variable conditionally defines the "HAS_FMIN" symbol, which
1639 indicates to the C program that the fmin() routine is available.
1640 "d_fork"
1642 From d_fork.U:
1643 This variable conditionally defines the "HAS_FORK" symbol, which
1645 indicates to the C program that the fork() routine is available.
1646 "d_fp_class"
1648 From d_fp_class.U:
1649 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 "d_fp_classify"
1655 From d_fpclassify.U:
1656 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 "d_fp_classl"
1662 From d_fp_classl.U:
1663 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 "d_fpathconf"
1669 From d_pathconf.U:
1670 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 "d_fpclass"
1677 From d_fpclass.U:
1678 This variable conditionally defines the "HAS_FPCLASS" symbol, which
1680 indicates to the C program that the fpclass() routine is available.
1681 "d_fpclassify"
1683 From d_fpclassify.U:
1684 This variable conditionally defines the "HAS_FPCLASSIFY" symbol,
1686 which indicates to the C program that the fpclassify() routine is
1687 available.
1688 "d_fpclassl"
1690 From d_fpclassl.U:
1691 This variable conditionally defines the "HAS_FPCLASSL" symbol,
1693 which indicates to the C program that the fpclassl() routine is
1694 available.
1695 "d_fpgetround"
1697 From d_fpgetround.U:
1698 This variable conditionally defines "HAS_FPGETROUND" if
1700 fpgetround() is available to get the floating point rounding mode.
1701 "d_fpos64_t"
1703 From d_fpos64_t.U:
1704 This symbol will be defined if the C compiler supports fpos64_t.
1706 "d_freelocale"
1708 From d_newlocale.U:
1709 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 "d_frexpl"
1716 From d_frexpl.U:
1717 This variable conditionally defines the "HAS_FREXPL" symbol, which
1719 indicates to the C program that the frexpl() routine is available.
1720 "d_fs_data_s"
1722 From d_fs_data_s.U:
1723 This variable conditionally defines the "HAS_STRUCT_FS_DATA"
1725 symbol, which indicates that the struct fs_data is supported.
1726 "d_fseeko"
1728 From d_fseeko.U:
1729 This variable conditionally defines the "HAS_FSEEKO" symbol, which
1731 indicates to the C program that the fseeko() routine is available.
1732 "d_fsetpos"
1734 From d_fsetpos.U:
1735 This variable conditionally defines "HAS_FSETPOS" if fsetpos() is
1737 available to set the file position indicator.
1738 "d_fstatfs"
1740 From d_fstatfs.U:
1741 This variable conditionally defines the "HAS_FSTATFS" symbol, which
1743 indicates to the C program that the fstatfs() routine is available.
1744 "d_fstatvfs"
1746 From d_statvfs.U:
1747 This variable conditionally defines the "HAS_FSTATVFS" symbol,
1749 which indicates to the C program that the fstatvfs() routine is
1750 available.
1751 "d_fsync"
1753 From d_fsync.U:
1754 This variable conditionally defines the "HAS_FSYNC" symbol, which
1756 indicates to the C program that the fsync() routine is available.
1757 "d_ftello"
1759 From d_ftello.U:
1760 This variable conditionally defines the "HAS_FTELLO" symbol, which
1762 indicates to the C program that the ftello() routine is available.
1763 "d_ftime"
1765 From d_ftime.U:
1766 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 "d_futimes"
1772 From d_futimes.U:
1773 This variable conditionally defines the "HAS_FUTIMES" symbol, which
1775 indicates to the C program that the futimes() routine is available.
1776 "d_gai_strerror"
1778 From d_gai_strerror.U:
1779 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 "d_gdbm_ndbm_h_uses_prototypes"
1786 From i_ndbm.U:
1787 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 "d_gdbmndbm_h_uses_prototypes"
1798 From i_ndbm.U:
1799 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 "d_getaddrinfo"
1810 From d_getaddrinfo.U:
1811 This variable conditionally defines the "HAS_GETADDRINFO" symbol,
1813 which indicates to the C program that the getaddrinfo() function is
1814 available.
1815 "d_getcwd"
1817 From d_getcwd.U:
1818 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 "d_getenv_preserves_other_thread"
1824 From d_getenv_thread.U:
1825 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 "d_getespwnam"
1832 From d_getespwnam.U:
1833 This variable conditionally defines "HAS_GETESPWNAM" if
1835 getespwnam() is available to retrieve enhanced (shadow) password
1836 entries by name.
1837 "d_getfsstat"
1839 From d_getfsstat.U:
1840 This variable conditionally defines the "HAS_GETFSSTAT" symbol,
1842 which indicates to the C program that the getfsstat() routine is
1843 available.
1844 "d_getgrent"
1846 From d_getgrent.U:
1847 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 "d_getgrent_r"
1853 From d_getgrent_r.U:
1854 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 "d_getgrgid_r"
1860 From d_getgrgid_r.U:
1861 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 "d_getgrnam_r"
1867 From d_getgrnam_r.U:
1868 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 "d_getgrps"
1874 From d_getgrps.U:
1875 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 "d_gethbyaddr"
1881 From d_gethbyad.U:
1882 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 "d_gethbyname"
1888 From d_gethbynm.U:
1889 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 "d_gethent"
1895 From d_gethent.U:
1896 This variable conditionally defines "HAS_GETHOSTENT" if
1898 gethostent() is available to look up host names in some data base
1899 or another.
1900 "d_gethname"
1902 From d_gethname.U:
1903 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 "d_gethostbyaddr_r"
1909 From d_gethostbyaddr_r.U:
1910 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 "d_gethostbyname_r"
1916 From d_gethostbyname_r.U:
1917 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 "d_gethostent_r"
1923 From d_gethostent_r.U:
1924 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 "d_gethostprotos"
1930 From d_gethostprotos.U:
1931 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 "d_getitimer"
1938 From d_getitimer.U:
1939 This variable conditionally defines the "HAS_GETITIMER" symbol,
1941 which indicates to the C program that the getitimer() routine is
1942 available.
1943 "d_getlogin"
1945 From d_getlogin.U:
1946 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 "d_getlogin_r"
1952 From d_getlogin_r.U:
1953 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 "d_getmnt"
1959 From d_getmnt.U:
1960 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 "d_getmntent"
1966 From d_getmntent.U:
1967 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 "d_getnameinfo"
1973 From d_getnameinfo.U:
1974 This variable conditionally defines the "HAS_GETNAMEINFO" symbol,
1976 which indicates to the C program that the getnameinfo() function is
1977 available.
1978 "d_getnbyaddr"
1980 From d_getnbyad.U:
1981 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 "d_getnbyname"
1987 From d_getnbynm.U:
1988 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 "d_getnent"
1994 From d_getnent.U:
1995 This variable conditionally defines "HAS_GETNETENT" if getnetent()
1997 is available to look up network names in some data base or another.
1998 "d_getnetbyaddr_r"
2000 From d_getnetbyaddr_r.U:
2001 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 "d_getnetbyname_r"
2007 From d_getnetbyname_r.U:
2008 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 "d_getnetent_r"
2014 From d_getnetent_r.U:
2015 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 "d_getnetprotos"
2021 From d_getnetprotos.U:
2022 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 "d_getpagsz"
2029 From d_getpagsz.U:
2030 This variable conditionally defines "HAS_GETPAGESIZE" if
2032 getpagesize() is available to get the system page size.
2033 "d_getpbyname"
2035 From d_getprotby.U:
2036 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 "d_getpbynumber"
2042 From d_getprotby.U:
2043 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 "d_getpent"
2050 From d_getpent.U:
2051 This variable conditionally defines "HAS_GETPROTOENT" if
2053 getprotoent() is available to look up protocols in some data base
2054 or another.
2055 "d_getpgid"
2057 From d_getpgid.U:
2058 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 "d_getpgrp"
2064 From d_getpgrp.U:
2065 This variable conditionally defines "HAS_GETPGRP" if getpgrp() is
2067 available to get the current process group.
2068 "d_getpgrp2"
2070 From d_getpgrp2.U:
2071 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 "d_getppid"
2077 From d_getppid.U:
2078 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 "d_getprior"
2084 From d_getprior.U:
2085 This variable conditionally defines "HAS_GETPRIORITY" if
2087 getpriority() is available to get a process's priority.
2088 "d_getprotobyname_r"
2090 From d_getprotobyname_r.U:
2091 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 "d_getprotobynumber_r"
2097 From d_getprotobynumber_r.U:
2098 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 "d_getprotoent_r"
2104 From d_getprotoent_r.U:
2105 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 "d_getprotoprotos"
2111 From d_getprotoprotos.U:
2112 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 "d_getprpwnam"
2119 From d_getprpwnam.U:
2120 This variable conditionally defines "HAS_GETPRPWNAM" if
2122 getprpwnam() is available to retrieve protected (shadow) password
2123 entries by name.
2124 "d_getpwent"
2126 From d_getpwent.U:
2127 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 "d_getpwent_r"
2133 From d_getpwent_r.U:
2134 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 "d_getpwnam_r"
2140 From d_getpwnam_r.U:
2141 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 "d_getpwuid_r"
2147 From d_getpwuid_r.U:
2148 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 "d_getsbyname"
2154 From d_getsrvby.U:
2155 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 "d_getsbyport"
2161 From d_getsrvby.U:
2162 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 "d_getsent"
2168 From d_getsent.U:
2169 This variable conditionally defines "HAS_GETSERVENT" if
2171 getservent() is available to look up network services in some data
2172 base or another.
2173 "d_getservbyname_r"
2175 From d_getservbyname_r.U:
2176 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 "d_getservbyport_r"
2182 From d_getservbyport_r.U:
2183 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 "d_getservent_r"
2189 From d_getservent_r.U:
2190 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 "d_getservprotos"
2196 From d_getservprotos.U:
2197 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 "d_getspnam"
2204 From d_getspnam.U:
2205 This variable conditionally defines "HAS_GETSPNAM" if getspnam() is
2207 available to retrieve SysV shadow password entries by name.
2208 "d_getspnam_r"
2210 From d_getspnam_r.U:
2211 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 "d_gettimeod"
2217 From d_ftime.U:
2218 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 "d_gmtime64"
2225 From d_timefuncs64.U:
2226 This variable conditionally defines the HAS_GMTIME64 symbol, which
2228 indicates to the C program that the gmtime64 () routine is
2229 available.
2230 "d_gmtime_r"
2232 From d_gmtime_r.U:
2233 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 "d_gnulibc"
2239 From d_gnulibc.U:
2240 Defined if we're dealing with the "GNU" C Library.
2242 "d_grpasswd"
2244 From i_grp.U:
2245 This variable conditionally defines "GRPASSWD", which indicates
2247 that struct group in <grp.h> contains gr_passwd.
2248 "d_has_C_UTF8"
2250 From d_setlocale.U:
2251 This variable is set to either "true" or "false" depending on
2253 whether the compilation system supports the C.UTF-8 locale.
2254 "d_hasmntopt"
2256 From d_hasmntopt.U:
2257 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 "d_htonl"
2263 From d_htonl.U:
2264 This variable conditionally defines "HAS_HTONL" if htonl() and its
2266 friends are available to do network order byte swapping.
2267 "d_hypot"
2269 From d_hypot.U:
2270 This variable conditionally defines "HAS_HYPOT" if hypot is
2272 available for numerically stable hypotenuse function.
2273 "d_ilogb"
2275 From d_ilogb.U:
2276 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 "d_ilogbl"
2282 From d_ilogbl.U:
2283 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 "d_inc_version_list"
2290 From inc_version_list.U:
2291 This variable conditionally defines "PERL_INC_VERSION_LIST". It is
2293 set to undef when "PERL_INC_VERSION_LIST" is empty.
2294 "d_inetaton"
2296 From d_inetaton.U:
2297 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 "d_inetntop"
2303 From d_inetntop.U:
2304 This variable conditionally defines the "HAS_INETNTOP" symbol,
2306 which indicates to the C program that the inet_ntop() function is
2307 available.
2308 "d_inetpton"
2310 From d_inetpton.U:
2311 This variable conditionally defines the "HAS_INETPTON" symbol,
2313 which indicates to the C program that the inet_pton() function is
2314 available.
2315 "d_int64_t"
2317 From d_int64_t.U:
2318 This symbol will be defined if the C compiler supports int64_t.
2320 "d_ip_mreq"
2322 From d_socket.U:
2323 This variable conditionally defines the "HAS_IP_MREQ" symbol, which
2325 indicates the availability of a struct ip_mreq.
2326 "d_ip_mreq_source"
2328 From d_socket.U:
2329 This variable conditionally defines the "HAS_IP_MREQ_SOURCE"
2331 symbol, which indicates the availability of a struct
2332 ip_mreq_source.
2333 "d_ipv6_mreq"
2335 From d_socket.U:
2336 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
2338 indicates the availability of a struct ipv6_mreq.
2339 "d_ipv6_mreq_source"
2341 From d_socket.U:
2342 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE
2344 symbol, which indicates the availability of a struct
2345 ipv6_mreq_source.
2346 "d_isascii"
2348 From d_isascii.U:
2349 This variable conditionally defines the "HAS_ISASCII" constant,
2351 which indicates to the C program that isascii() is available.
2352 "d_isblank"
2354 From d_isblank.U:
2355 This variable conditionally defines the "HAS_ISBLANK" constant,
2357 which indicates to the C program that isblank() is available.
2358 "d_isfinite"
2360 From d_isfinite.U:
2361 This variable conditionally defines the "HAS_ISFINITE" symbol,
2363 which indicates to the C program that the isfinite() routine is
2364 available.
2365 "d_isfinitel"
2367 From d_isfinitel.U:
2368 This variable conditionally defines the "HAS_ISFINITEL" symbol,
2370 which indicates to the C program that the isfinitel() routine is
2371 available.
2372 "d_isinf"
2374 From d_isinf.U:
2375 This variable conditionally defines the "HAS_ISINF" symbol, which
2377 indicates to the C program that the isinf() routine is available.
2378 "d_isinfl"
2380 From d_isinfl.U:
2381 This variable conditionally defines the "HAS_ISINFL" symbol, which
2383 indicates to the C program that the isinfl() routine is available.
2384 "d_isless"
2386 From d_isless.U:
2387 This variable conditionally defines the "HAS_ISLESS" symbol, which
2389 indicates to the C program that the isless() routine is available.
2390 "d_isnan"
2392 From d_isnan.U:
2393 This variable conditionally defines the "HAS_ISNAN" symbol, which
2395 indicates to the C program that the isnan() routine is available.
2396 "d_isnanl"
2398 From d_isnanl.U:
2399 This variable conditionally defines the "HAS_ISNANL" symbol, which
2401 indicates to the C program that the isnanl() routine is available.
2402 "d_isnormal"
2404 From d_isnormal.U:
2405 This variable conditionally defines the "HAS_ISNORMAL" symbol,
2407 which indicates to the C program that the isnormal() routine is
2408 available.
2409 "d_j0"
2411 From d_j0.U:
2412 This variable conditionally defines the HAS_J0 symbol, which
2414 indicates to the C program that the j0() routine is available.
2415 "d_j0l"
2417 From d_j0.U:
2418 This variable conditionally defines the HAS_J0L symbol, which
2420 indicates to the C program that the j0l() routine is available.
2421 "d_killpg"
2423 From d_killpg.U:
2424 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 "d_lc_monetary_2008"
2430 From d_lc_monetary_2008.U:
2431 This variable conditionally defines HAS_LC_MONETARY_2008 if libc
2433 has the international currency locale rules from "POSIX"
2434 1003.1-2008.
2435 "d_lchown"
2437 From d_lchown.U:
2438 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 "d_ldbl_dig"
2444 From d_ldbl_dig.U:
2445 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 "d_ldexpl"
2451 From d_longdbl.U:
2452 This variable conditionally defines the "HAS_LDEXPL" symbol, which
2454 indicates to the C program that the ldexpl() routine is available.
2455 "d_lgamma"
2457 From d_lgamma.U:
2458 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 "d_lgamma_r"
2464 From d_lgamma_r.U:
2465 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 "d_libm_lib_version"
2472 From d_libm_lib_version.U:
2473 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 "d_libname_unique"
2479 From so.U:
2480 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 "d_link"
2486 From d_link.U:
2487 This variable conditionally defines "HAS_LINK" if link() is
2489 available to create hard links.
2490 "d_linkat"
2492 From d_fsat.U:
2493 This variable conditionally defines the "HAS_LINKAT" symbol, which
2495 indicates the "POSIX" linkat() function is available.
2496 "d_llrint"
2498 From d_llrint.U:
2499 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 "d_llrintl"
2506 From d_llrintl.U:
2507 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 "d_llround"
2514 From d_llround.U:
2515 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 "d_llroundl"
2521 From d_llroundl.U:
2522 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 "d_localeconv_l"
2529 From d_localeconv_l.U:
2530 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 "d_localtime64"
2536 From d_timefuncs64.U:
2537 This variable conditionally defines the HAS_LOCALTIME64 symbol,
2539 which indicates to the C program that the localtime64 () routine is
2540 available.
2541 "d_localtime_r"
2543 From d_localtime_r.U:
2544 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 "d_localtime_r_needs_tzset"
2550 From d_localtime_r.U:
2551 This variable conditionally defines the "LOCALTIME_R_NEEDS_TZSET"
2553 symbol, which makes us call tzset before localtime_r()
2554 "d_locconv"
2556 From d_locconv.U:
2557 This variable conditionally defines "HAS_LOCALECONV" if
2559 localeconv() is available for numeric and monetary formatting
2560 conventions.
2561 "d_lockf"
2563 From d_lockf.U:
2564 This variable conditionally defines "HAS_LOCKF" if lockf() is
2566 available to do file locking.
2567 "d_log1p"
2569 From d_log1p.U:
2570 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 "d_log2"
2576 From d_log2.U:
2577 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 "d_logb"
2583 From d_logb.U:
2584 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 "d_long_double_style_ieee"
2590 From d_longdbl.U:
2591 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 "d_long_double_style_ieee_doubledouble"
2598 From d_longdbl.U:
2599 This variable conditionally defines
2601 "LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE" if the long double is the
2602 128-bit "IEEE" 754 double-double.
2603 "d_long_double_style_ieee_extended"
2605 From d_longdbl.U:
2606 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 "d_long_double_style_ieee_std"
2614 From d_longdbl.U:
2615 This variable conditionally defines "LONG_DOUBLE_STYLE_IEEE_STD" if
2617 the long double is the 128-bit "IEEE" 754.
2618 "d_long_double_style_vax"
2620 From d_longdbl.U:
2621 This variable conditionally defines "LONG_DOUBLE_STYLE_VAX" if the
2623 long double is the 128-bit "VAX" format H.
2624 "d_longdbl"
2626 From d_longdbl.U:
2627 This variable conditionally defines "HAS_LONG_DOUBLE" if the long
2629 double type is supported.
2630 "d_longlong"
2632 From d_longlong.U:
2633 This variable conditionally defines "HAS_LONG_LONG" if the long
2635 long type is supported.
2636 "d_lrint"
2638 From d_lrint.U:
2639 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 "d_lrintl"
2646 From d_lrintl.U:
2647 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 "d_lround"
2654 From d_lround.U:
2655 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 "d_lroundl"
2661 From d_lroundl.U:
2662 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 "d_lseekproto"
2668 From d_lseekproto.U:
2669 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 "d_lstat"
2676 From d_lstat.U:
2677 This variable conditionally defines "HAS_LSTAT" if lstat() is
2679 available to do file stats on symbolic links.
2680 "d_madvise"
2682 From d_madvise.U:
2683 This variable conditionally defines "HAS_MADVISE" if madvise() is
2685 available to map a file into memory.
2686 "d_malloc_good_size"
2688 From d_malloc_size.U:
2689 This symbol, if defined, indicates that the malloc_good_size
2691 routine is available for use.
2692 "d_malloc_size"
2694 From d_malloc_size.U:
2695 This symbol, if defined, indicates that the malloc_size routine is
2697 available for use.
2698 "d_malloc_usable_size"
2700 From d_malloc_size.U:
2701 This symbol, if defined, indicates that the malloc_usable_size
2703 routine is available for use.
2704 "d_mblen"
2706 From d_mblen.U:
2707 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 "d_mbrlen"
2713 From d_mbrlen.U:
2714 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 "d_mbrtowc"
2720 From d_mbrtowc.U:
2721 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 "d_mbstowcs"
2727 From d_mbstowcs.U:
2728 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 "d_mbtowc"
2735 From d_mbtowc.U:
2736 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 "d_memmem"
2742 From d_memmem.U:
2743 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 "d_memrchr"
2750 From d_memrchr.U:
2751 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 "d_mkdir"
2758 From d_mkdir.U:
2759 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 "d_mkdtemp"
2765 From d_mkdtemp.U:
2766 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 "d_mkfifo"
2772 From d_mkfifo.U:
2773 This variable conditionally defines the "HAS_MKFIFO" symbol, which
2775 indicates to the C program that the mkfifo() routine is available.
2776 "d_mkostemp"
2778 From d_mkostemp.U:
2779 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 "d_mkstemp"
2785 From d_mkstemp.U:
2786 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 "d_mkstemps"
2792 From d_mkstemps.U:
2793 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 "d_mktime"
2800 From d_mktime.U:
2801 This variable conditionally defines the "HAS_MKTIME" symbol, which
2803 indicates to the C program that the mktime() routine is available.
2804 "d_mktime64"
2806 From d_timefuncs64.U:
2807 This variable conditionally defines the HAS_MKTIME64 symbol, which
2809 indicates to the C program that the mktime64 () routine is
2810 available.
2811 "d_mmap"
2813 From d_mmap.U:
2814 This variable conditionally defines "HAS_MMAP" if mmap() is
2816 available to map a file into memory.
2817 "d_modfl"
2819 From d_modfl.U:
2820 This variable conditionally defines the "HAS_MODFL" symbol, which
2822 indicates to the C program that the modfl() routine is available.
2823 "d_modflproto"
2825 From d_modfl.U:
2826 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 "d_mprotect"
2833 From d_mprotect.U:
2834 This variable conditionally defines "HAS_MPROTECT" if mprotect() is
2836 available to modify the access protection of a memory mapped file.
2837 "d_msg"
2839 From d_msg.U:
2840 This variable conditionally defines the "HAS_MSG" symbol, which
2842 indicates that the entire msg*(2) library is present.
2843 "d_msg_ctrunc"
2845 From d_socket.U:
2846 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 "d_msg_dontroute"
2852 From d_socket.U:
2853 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 "d_msg_oob"
2860 From d_socket.U:
2861 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 "d_msg_peek"
2867 From d_socket.U:
2868 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 "d_msg_proxy"
2874 From d_socket.U:
2875 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 "d_msgctl"
2881 From d_msgctl.U:
2882 This variable conditionally defines the "HAS_MSGCTL" symbol, which
2884 indicates to the C program that the msgctl() routine is available.
2885 "d_msgget"
2887 From d_msgget.U:
2888 This variable conditionally defines the "HAS_MSGGET" symbol, which
2890 indicates to the C program that the msgget() routine is available.
2891 "d_msghdr_s"
2893 From d_msghdr_s.U:
2894 This variable conditionally defines the "HAS_STRUCT_MSGHDR" symbol,
2896 which indicates that the struct msghdr is supported.
2897 "d_msgrcv"
2899 From d_msgrcv.U:
2900 This variable conditionally defines the "HAS_MSGRCV" symbol, which
2902 indicates to the C program that the msgrcv() routine is available.
2903 "d_msgsnd"
2905 From d_msgsnd.U:
2906 This variable conditionally defines the "HAS_MSGSND" symbol, which
2908 indicates to the C program that the msgsnd() routine is available.
2909 "d_msync"
2911 From d_msync.U:
2912 This variable conditionally defines "HAS_MSYNC" if msync() is
2914 available to synchronize a mapped file.
2915 "d_munmap"
2917 From d_munmap.U:
2918 This variable conditionally defines "HAS_MUNMAP" if munmap() is
2920 available to unmap a region mapped by mmap().
2921 "d_mymalloc"
2923 From mallocsrc.U:
2924 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 "d_nan"
2930 From d_nan.U:
2931 This variable conditionally defines "HAS_NAN" if nan() is available
2933 to generate NaN.
2934 "d_nanosleep"
2936 From d_nanosleep.U:
2937 This variable conditionally defines "HAS_NANOSLEEP" if nanosleep()
2939 is available to sleep with 1E-9 sec accuracy.
2940 "d_ndbm"
2942 From i_ndbm.U:
2943 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 "d_ndbm_h_uses_prototypes"
2952 From i_ndbm.U:
2953 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 "d_nearbyint"
2964 From d_nearbyint.U:
2965 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 "d_newlocale"
2971 From d_newlocale.U:
2972 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 "d_nextafter"
2979 From d_nextafter.U:
2980 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 "d_nexttoward"
2986 From d_nexttoward.U:
2987 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 "d_nice"
2993 From d_nice.U:
2994 This variable conditionally defines the "HAS_NICE" symbol, which
2996 indicates to the C program that the nice() routine is available.
2997 "d_nl_langinfo"
2999 From d_nl_langinfo.U:
3000 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 "d_nl_langinfo_l"
3006 From d_nl_langinfo_l.U:
3007 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 "d_non_int_bitfields"
3013 From d_bitfield.U:
3014 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 "d_nv_preserves_uv"
3020 From perlxv.U:
3021 This variable indicates whether a variable of type nvtype can
3023 preserve all the bits a variable of type uvtype.
3024 "d_nv_zero_is_allbits_zero"
3026 From perlxv.U:
3027 This variable indicates whether a variable of type nvtype stores
3029 0.0 in memory as all bits zero.
3030 "d_off64_t"
3032 From d_off64_t.U:
3033 This symbol will be defined if the C compiler supports off64_t.
3035 "d_old_pthread_create_joinable"
3037 From d_pthrattrj.U:
3038 This variable conditionally defines pthread_create_joinable. undef
3040 if pthread.h defines "PTHREAD_CREATE_JOINABLE".
3041 "d_oldpthreads"
3043 From usethreads.U:
3044 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 "d_oldsock"
3051 From d_socket.U:
3052 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 "d_open3"
3058 From d_open3.U:
3059 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 "d_openat"
3065 From d_fsat.U:
3066 This variable conditionally defines the "HAS_OPENAT" symbol, which
3068 indicates the "POSIX" openat() function is available.
3069 "d_pathconf"
3071 From d_pathconf.U:
3072 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 "d_pause"
3079 From d_pause.U:
3080 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 "d_perl_otherlibdirs"
3086 From otherlibdirs.U:
3087 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 "d_phostname"
3093 From d_gethname.U:
3094 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 "d_pipe"
3100 From d_pipe.U:
3101 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 "d_pipe2"
3107 From d_pipe2.U:
3108 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 "d_poll"
3114 From d_poll.U:
3115 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 "d_portable"
3121 From d_portable.U:
3122 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 "d_prctl"
3128 From d_prctl.U:
3129 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 "d_prctl_set_name"
3136 From d_prctl.U:
3137 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 "d_printf_format_null"
3143 From d_attribut.U:
3144 This variable conditionally defines "PRINTF_FORMAT_NULL_OK", which
3146 indicates the C compiler allows printf-like formats to be null.
3147 "d_procselfexe"
3149 From d_procselfexe.U:
3150 Defined if $procselfexe is symlink to the absolute pathname of the
3152 executing program.
3153 "d_pseudofork"
3155 From d_vfork.U:
3156 This variable conditionally defines the "HAS_PSEUDOFORK" symbol,
3158 which indicates that an emulation of the fork routine is available.
3159 "d_pthread_atfork"
3161 From d_pthread_atfork.U:
3162 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 "d_pthread_attr_setscope"
3168 From d_pthread_attr_ss.U:
3169 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 "d_pthread_yield"
3175 From d_pthread_y.U:
3176 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 "d_ptrdiff_t"
3182 From d_ptrdiff_t.U:
3183 This symbol will be defined if the C compiler supports ptrdiff_t.
3185 "d_pwage"
3187 From i_pwd.U:
3188 This variable conditionally defines "PWAGE", which indicates that
3190 struct passwd contains pw_age.
3191 "d_pwchange"
3193 From i_pwd.U:
3194 This variable conditionally defines "PWCHANGE", which indicates
3196 that struct passwd contains pw_change.
3197 "d_pwclass"
3199 From i_pwd.U:
3200 This variable conditionally defines "PWCLASS", which indicates that
3202 struct passwd contains pw_class.
3203 "d_pwcomment"
3205 From i_pwd.U:
3206 This variable conditionally defines "PWCOMMENT", which indicates
3208 that struct passwd contains pw_comment.
3209 "d_pwexpire"
3211 From i_pwd.U:
3212 This variable conditionally defines "PWEXPIRE", which indicates
3214 that struct passwd contains pw_expire.
3215 "d_pwgecos"
3217 From i_pwd.U:
3218 This variable conditionally defines "PWGECOS", which indicates that
3220 struct passwd contains pw_gecos.
3221 "d_pwpasswd"
3223 From i_pwd.U:
3224 This variable conditionally defines "PWPASSWD", which indicates
3226 that struct passwd contains pw_passwd.
3227 "d_pwquota"
3229 From i_pwd.U:
3230 This variable conditionally defines "PWQUOTA", which indicates that
3232 struct passwd contains pw_quota.
3233 "d_qgcvt"
3235 From d_qgcvt.U:
3236 This variable conditionally defines the "HAS_QGCVT" symbol, which
3238 indicates to the C program that the qgcvt() routine is available.
3239 "d_quad"
3241 From quadtype.U:
3242 This variable, if defined, tells that there's a 64-bit integer
3244 type, quadtype.
3245 "d_querylocale"
3247 From d_newlocale.U:
3248 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 "d_random_r"
3254 From d_random_r.U:
3255 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 "d_re_comp"
3261 From d_regcmp.U:
3262 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 "d_readdir"
3269 From d_readdir.U:
3270 This variable conditionally defines "HAS_READDIR" if readdir() is
3272 available to read directory entries.
3273 "d_readdir64_r"
3275 From d_readdir64_r.U:
3276 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 "d_readdir_r"
3282 From d_readdir_r.U:
3283 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 "d_readlink"
3289 From d_readlink.U:
3290 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 "d_readv"
3296 From d_readv.U:
3297 This variable conditionally defines the "HAS_READV" symbol, which
3299 indicates to the C program that the readv() routine is available.
3300 "d_recvmsg"
3302 From d_recvmsg.U:
3303 This variable conditionally defines the "HAS_RECVMSG" symbol, which
3305 indicates to the C program that the recvmsg() routine is available.
3306 "d_regcmp"
3308 From d_regcmp.U:
3309 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 "d_regcomp"
3315 From d_regcmp.U:
3316 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 "d_remainder"
3323 From d_remainder.U:
3324 This variable conditionally defines the "HAS_REMAINDER" symbol,
3326 which indicates to the C program that the remainder() routine is
3327 available.
3328 "d_remquo"
3330 From d_remquo.U:
3331 This variable conditionally defines the "HAS_REMQUO" symbol, which
3333 indicates to the C program that the remquo() routine is available.
3334 "d_rename"
3336 From d_rename.U:
3337 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 "d_renameat"
3343 From d_fsat.U:
3344 This variable conditionally defines the "HAS_RENAMEAT" symbol,
3346 which indicates the "POSIX" renameat() function is available.
3347 "d_rewinddir"
3349 From d_readdir.U:
3350 This variable conditionally defines "HAS_REWINDDIR" if rewinddir()
3352 is available.
3353 "d_rint"
3355 From d_rint.U:
3356 This variable conditionally defines the "HAS_RINT" symbol, which
3358 indicates to the C program that the rint() routine is available.
3359 "d_rmdir"
3361 From d_rmdir.U:
3362 This variable conditionally defines "HAS_RMDIR" if rmdir() is
3364 available to remove directories.
3365 "d_round"
3367 From d_round.U:
3368 This variable conditionally defines the "HAS_ROUND" symbol, which
3370 indicates to the C program that the round() routine is available.
3371 "d_sbrkproto"
3373 From d_sbrkproto.U:
3374 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 "d_scalbn"
3381 From d_scalbn.U:
3382 This variable conditionally defines the "HAS_SCALBN" symbol, which
3384 indicates to the C program that the scalbn() routine is available.
3385 "d_scalbnl"
3387 From d_scalbnl.U:
3388 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 "d_sched_yield"
3394 From d_pthread_y.U:
3395 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 "d_scm_rights"
3401 From d_socket.U:
3402 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 "d_seekdir"
3408 From d_readdir.U:
3409 This variable conditionally defines "HAS_SEEKDIR" if seekdir() is
3411 available.
3412 "d_select"
3414 From d_select.U:
3415 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 "d_sem"
3421 From d_sem.U:
3422 This variable conditionally defines the "HAS_SEM" symbol, which
3424 indicates that the entire sem*(2) library is present.
3425 "d_semctl"
3427 From d_semctl.U:
3428 This variable conditionally defines the "HAS_SEMCTL" symbol, which
3430 indicates to the C program that the semctl() routine is available.
3431 "d_semctl_semid_ds"
3433 From d_union_semun.U:
3434 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 "d_semctl_semun"
3440 From d_union_semun.U:
3441 This variable conditionally defines "USE_SEMCTL_SEMUN", which
3443 indicates that union semun is to be used for semctl "IPC_STAT".
3444 "d_semget"
3446 From d_semget.U:
3447 This variable conditionally defines the "HAS_SEMGET" symbol, which
3449 indicates to the C program that the semget() routine is available.
3450 "d_semop"
3452 From d_semop.U:
3453 This variable conditionally defines the "HAS_SEMOP" symbol, which
3455 indicates to the C program that the semop() routine is available.
3456 "d_sendmsg"
3458 From d_sendmsg.U:
3459 This variable conditionally defines the "HAS_SENDMSG" symbol, which
3461 indicates to the C program that the sendmsg() routine is available.
3462 "d_setegid"
3464 From d_setegid.U:
3465 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 "d_setenv"
3471 From d_setenv.U:
3472 This variable conditionally defines the "HAS_SETENV" symbol, which
3474 indicates to the C program that the setenv routine is available.
3475 "d_seteuid"
3477 From d_seteuid.U:
3478 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 "d_setgrent"
3484 From d_setgrent.U:
3485 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 "d_setgrent_r"
3491 From d_setgrent_r.U:
3492 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 "d_setgrps"
3498 From d_setgrps.U:
3499 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 "d_sethent"
3505 From d_sethent.U:
3506 This variable conditionally defines "HAS_SETHOSTENT" if
3508 sethostent() is available.
3509 "d_sethostent_r"
3511 From d_sethostent_r.U:
3512 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 "d_setitimer"
3518 From d_setitimer.U:
3519 This variable conditionally defines the "HAS_SETITIMER" symbol,
3521 which indicates to the C program that the setitimer() routine is
3522 available.
3523 "d_setlinebuf"
3525 From d_setlnbuf.U:
3526 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 "d_setlocale"
3533 From d_setlocale.U:
3534 This variable conditionally defines "HAS_SETLOCALE" if setlocale()
3536 is available to handle locale-specific ctype implementations.
3537 "d_setlocale_accepts_any_locale_name"
3539 From d_setlocale.U:
3540 This variable conditionally defines
3542 "SETLOCALE_ACCEPTS_ANY_LOCALE_NAME" if setlocale() accepts any
3543 locale name.
3544 "d_setlocale_r"
3546 From d_setlocale_r.U:
3547 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 "d_setnent"
3553 From d_setnent.U:
3554 This variable conditionally defines "HAS_SETNETENT" if setnetent()
3556 is available.
3557 "d_setnetent_r"
3559 From d_setnetent_r.U:
3560 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 "d_setpent"
3566 From d_setpent.U:
3567 This variable conditionally defines "HAS_SETPROTOENT" if
3569 setprotoent() is available.
3570 "d_setpgid"
3572 From d_setpgid.U:
3573 This variable conditionally defines the "HAS_SETPGID" symbol if the
3575 setpgid(pid, gpid) function is available to set process group "ID".
3576 "d_setpgrp"
3578 From d_setpgrp.U:
3579 This variable conditionally defines "HAS_SETPGRP" if setpgrp() is
3581 available to set the current process group.
3582 "d_setpgrp2"
3584 From d_setpgrp2.U:
3585 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 "d_setprior"
3591 From d_setprior.U:
3592 This variable conditionally defines "HAS_SETPRIORITY" if
3594 setpriority() is available to set a process's priority.
3595 "d_setproctitle"
3597 From d_setproctitle.U:
3598 This variable conditionally defines the "HAS_SETPROCTITLE" symbol,
3600 which indicates to the C program that the setproctitle() routine is
3601 available.
3602 "d_setprotoent_r"
3604 From d_setprotoent_r.U:
3605 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 "d_setpwent"
3611 From d_setpwent.U:
3612 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 "d_setpwent_r"
3619 From d_setpwent_r.U:
3620 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 "d_setregid"
3626 From d_setregid.U:
3627 This variable conditionally defines "HAS_SETREGID" if setregid() is
3629 available to change the real and effective gid of the current
3630 process.
3631 "d_setresgid"
3633 From d_setregid.U:
3634 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 "d_setresuid"
3640 From d_setreuid.U:
3641 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 "d_setreuid"
3647 From d_setreuid.U:
3648 This variable conditionally defines "HAS_SETREUID" if setreuid() is
3650 available to change the real and effective uid of the current
3651 process.
3652 "d_setrgid"
3654 From d_setrgid.U:
3655 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 "d_setruid"
3661 From d_setruid.U:
3662 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 "d_setsent"
3668 From d_setsent.U:
3669 This variable conditionally defines "HAS_SETSERVENT" if
3671 setservent() is available.
3672 "d_setservent_r"
3674 From d_setservent_r.U:
3675 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 "d_setsid"
3681 From d_setsid.U:
3682 This variable conditionally defines "HAS_SETSID" if setsid() is
3684 available to set the process group "ID".
3685 "d_setvbuf"
3687 From d_setvbuf.U:
3688 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 "d_shm"
3694 From d_shm.U:
3695 This variable conditionally defines the "HAS_SHM" symbol, which
3697 indicates that the entire shm*(2) library is present.
3698 "d_shmat"
3700 From d_shmat.U:
3701 This variable conditionally defines the "HAS_SHMAT" symbol, which
3703 indicates to the C program that the shmat() routine is available.
3704 "d_shmatprototype"
3706 From d_shmat.U:
3707 This variable conditionally defines the "HAS_SHMAT_PROTOTYPE"
3709 symbol, which indicates that sys/shm.h has a prototype for shmat.
3710 "d_shmctl"
3712 From d_shmctl.U:
3713 This variable conditionally defines the "HAS_SHMCTL" symbol, which
3715 indicates to the C program that the shmctl() routine is available.
3716 "d_shmdt"
3718 From d_shmdt.U:
3719 This variable conditionally defines the "HAS_SHMDT" symbol, which
3721 indicates to the C program that the shmdt() routine is available.
3722 "d_shmget"
3724 From d_shmget.U:
3725 This variable conditionally defines the "HAS_SHMGET" symbol, which
3727 indicates to the C program that the shmget() routine is available.
3728 "d_sigaction"
3730 From d_sigaction.U:
3731 This variable conditionally defines the "HAS_SIGACTION" symbol,
3733 which indicates that the Vr4 sigaction() routine is available.
3734 "d_siginfo_si_addr"
3736 From d_siginfo_si.U:
3737 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 "d_siginfo_si_band"
3743 From d_siginfo_si.U:
3744 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 "d_siginfo_si_errno"
3750 From d_siginfo_si.U:
3751 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 "d_siginfo_si_fd"
3757 From d_siginfo_si.U:
3758 This variable conditionally defines the "HAS_SIGINFO_SI_FD" symbol,
3760 which indicates that the siginfo_t struct has the si_fd member.
3761 "d_siginfo_si_pid"
3763 From d_siginfo_si.U:
3764 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 "d_siginfo_si_status"
3770 From d_siginfo_si.U:
3771 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 "d_siginfo_si_uid"
3777 From d_siginfo_si.U:
3778 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 "d_siginfo_si_value"
3784 From d_siginfo_si.U:
3785 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 "d_signbit"
3791 From d_signbit.U:
3792 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 "d_sigprocmask"
3798 From d_sigprocmask.U:
3799 This variable conditionally defines "HAS_SIGPROCMASK" if
3801 sigprocmask() is available to examine or change the signal mask of
3802 the calling process.
3803 "d_sigsetjmp"
3805 From d_sigsetjmp.U:
3806 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 "d_sin6_scope_id"
3812 From d_socket.U:
3813 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 "d_sitearch"
3819 From sitearch.U:
3820 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 "d_snprintf"
3826 From d_snprintf.U:
3827 This variable conditionally defines the "HAS_SNPRINTF" symbol,
3829 which indicates to the C program that the snprintf () library
3830 function is available.
3831 "d_sockaddr_in6"
3833 From d_socket.U:
3834 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol,
3836 which indicates the availability of a struct sockaddr_in6.
3837 "d_sockaddr_sa_len"
3839 From d_socket.U:
3840 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 "d_sockaddr_storage"
3846 From d_socket.U:
3847 This variable conditionally defines the "HAS_SOCKADDR_STORAGE"
3849 symbol, which indicates the availability of a struct
3850 sockaddr_storage.
3851 "d_sockatmark"
3853 From d_sockatmark.U:
3854 This variable conditionally defines the "HAS_SOCKATMARK" symbol,
3856 which indicates to the C program that the sockatmark() routine is
3857 available.
3858 "d_sockatmarkproto"
3860 From d_sockatmarkproto.U:
3861 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 "d_socket"
3868 From d_socket.U:
3869 This variable conditionally defines "HAS_SOCKET", which indicates
3871 that the "BSD" socket interface is supported.
3872 "d_socklen_t"
3874 From d_socklen_t.U:
3875 This symbol will be defined if the C compiler supports socklen_t.
3877 "d_sockpair"
3879 From d_socket.U:
3880 This variable conditionally defines the "HAS_SOCKETPAIR" symbol,
3882 which indicates that the "BSD" socketpair() is supported.
3883 "d_socks5_init"
3885 From d_socks5_init.U:
3886 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 "d_sqrtl"
3892 From d_sqrtl.U:
3893 This variable conditionally defines the "HAS_SQRTL" symbol, which
3895 indicates to the C program that the sqrtl() routine is available.
3896 "d_srand48_r"
3898 From d_srand48_r.U:
3899 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 "d_srandom_r"
3905 From d_srandom_r.U:
3906 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 "d_sresgproto"
3912 From d_sresgproto.U:
3913 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 "d_sresuproto"
3920 From d_sresuproto.U:
3921 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 "d_stat"
3928 From d_stat.U:
3929 This variable conditionally defines "HAS_STAT" if stat() is
3931 available to get file status.
3932 "d_statblks"
3934 From d_statblks.U:
3935 This variable conditionally defines "USE_STAT_BLOCKS" if this
3937 system has a stat structure declaring st_blksize and st_blocks.
3938 "d_statfs_f_flags"
3940 From d_statfs_f_flags.U:
3941 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 "d_statfs_s"
3948 From d_statfs_s.U:
3949 This variable conditionally defines the "HAS_STRUCT_STATFS" symbol,
3951 which indicates that the struct statfs is supported.
3952 "d_static_inline"
3954 From d_static_inline.U:
3955 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 "d_statvfs"
3962 From d_statvfs.U:
3963 This variable conditionally defines the "HAS_STATVFS" symbol, which
3965 indicates to the C program that the statvfs() routine is available.
3966 "d_stdio_cnt_lval"
3968 From d_stdstdio.U:
3969 This variable conditionally defines "STDIO_CNT_LVALUE" if the
3971 "FILE_cnt" macro can be used as an lvalue.
3972 "d_stdio_ptr_lval"
3974 From d_stdstdio.U:
3975 This variable conditionally defines "STDIO_PTR_LVALUE" if the
3977 "FILE_ptr" macro can be used as an lvalue.
3978 "d_stdio_ptr_lval_nochange_cnt"
3980 From d_stdstdio.U:
3981 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 "d_stdio_ptr_lval_sets_cnt"
3986 From d_stdstdio.U:
3987 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 "d_stdio_stream_array"
3993 From stdio_streams.U:
3994 This variable tells whether there is an array holding the stdio
3996 streams.
3997 "d_stdiobase"
3999 From d_stdstdio.U:
4000 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 "d_stdstdio"
4006 From d_stdstdio.U:
4007 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 "d_strcoll"
4013 From d_strcoll.U:
4014 This variable conditionally defines "HAS_STRCOLL" if strcoll() is
4016 available to compare strings using collating information.
4017 "d_strerror_l"
4019 From d_strerror_l.U:
4020 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 "d_strerror_r"
4027 From d_strerror_r.U:
4028 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 "d_strftime"
4034 From d_strftime.U:
4035 This variable conditionally defines the "HAS_STRFTIME" symbol,
4037 which indicates to the C program that the strftime() routine is
4038 available.
4039 "d_strlcat"
4041 From d_strlcat.U:
4042 This variable conditionally defines the "HAS_STRLCAT" symbol, which
4044 indicates to the C program that the strlcat () routine is
4045 available.
4046 "d_strlcpy"
4048 From d_strlcpy.U:
4049 This variable conditionally defines the "HAS_STRLCPY" symbol, which
4051 indicates to the C program that the strlcpy () routine is
4052 available.
4053 "d_strnlen"
4055 From d_strnlen.U:
4056 This variable conditionally defines the "HAS_STRNLEN" symbol, which
4058 indicates to the C program that the strnlen () routine is
4059 available.
4060 "d_strtod"
4062 From d_strtod.U:
4063 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 "d_strtod_l"
4069 From d_strtod_l.U:
4070 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 "d_strtol"
4076 From d_strtol.U:
4077 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 "d_strtold"
4084 From d_strtold.U:
4085 This variable conditionally defines the "HAS_STRTOLD" symbol, which
4087 indicates to the C program that the strtold() routine is available.
4088 "d_strtold_l"
4090 From d_strtold_l.U:
4091 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 "d_strtoll"
4097 From d_strtoll.U:
4098 This variable conditionally defines the "HAS_STRTOLL" symbol, which
4100 indicates to the C program that the strtoll() routine is available.
4101 "d_strtoq"
4103 From d_strtoq.U:
4104 This variable conditionally defines the "HAS_STRTOQ" symbol, which
4106 indicates to the C program that the strtoq() routine is available.
4107 "d_strtoul"
4109 From d_strtoul.U:
4110 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 "d_strtoull"
4116 From d_strtoull.U:
4117 This variable conditionally defines the "HAS_STRTOULL" symbol,
4119 which indicates to the C program that the strtoull() routine is
4120 available.
4121 "d_strtouq"
4123 From d_strtouq.U:
4124 This variable conditionally defines the "HAS_STRTOUQ" symbol, which
4126 indicates to the C program that the strtouq() routine is available.
4127 "d_strxfrm"
4129 From d_strxfrm.U:
4130 This variable conditionally defines "HAS_STRXFRM" if strxfrm() is
4132 available to transform strings.
4133 "d_strxfrm_l"
4135 From d_strxfrm_l.U:
4136 This variable conditionally defines "HAS_STRXFRM_L" if strxfrm_l()
4138 is available to transform strings.
4139 "d_suidsafe"
4141 From d_dosuid.U:
4142 This variable conditionally defines "SETUID_SCRIPTS_ARE_SECURE_NOW"
4144 if setuid scripts can be secure. This test looks in /dev/fd/.
4145 "d_symlink"
4147 From d_symlink.U:
4148 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 "d_syscall"
4154 From d_syscall.U:
4155 This variable conditionally defines "HAS_SYSCALL" if syscall() is
4157 available call arbitrary system calls.
4158 "d_syscallproto"
4160 From d_syscallproto.U:
4161 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 "d_sysconf"
4168 From d_sysconf.U:
4169 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 "d_sysernlst"
4175 From d_strerror.U:
4176 This variable conditionally defines "HAS_SYS_ERRNOLIST" if
4178 sys_errnolist[] is available to translate error numbers to the
4179 symbolic name.
4180 "d_syserrlst"
4182 From d_strerror.U:
4183 This variable conditionally defines "HAS_SYS_ERRLIST" if
4185 sys_errlist[] is available to translate error numbers to strings.
4186 "d_system"
4188 From d_system.U:
4189 This variable conditionally defines "HAS_SYSTEM" if system() is
4191 available to issue a shell command.
4192 "d_tcgetpgrp"
4194 From d_tcgtpgrp.U:
4195 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 "d_tcsetpgrp"
4201 From d_tcstpgrp.U:
4202 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 "d_telldir"
4208 From d_readdir.U:
4209 This variable conditionally defines "HAS_TELLDIR" if telldir() is
4211 available.
4212 "d_telldirproto"
4214 From d_telldirproto.U:
4215 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 "d_tgamma"
4222 From d_tgamma.U:
4223 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 "d_thread_local"
4229 From d_thread_local.U:
4230 This variable conditionally defines the "PERL_THREAD_LOCAL" symbol.
4232 In turn that gives a linkage specification for thread-local
4233 storage.
4234 "d_thread_safe_nl_langinfo_l"
4236 From d_nl_langinfo_l.U:
4237 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 "d_time"
4243 From d_time.U:
4244 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 "d_timegm"
4250 From d_timegm.U:
4251 This variable conditionally defines the "HAS_TIMEGM" symbol, which
4253 indicates to the C program that the timegm () routine is available.
4254 "d_times"
4256 From d_times.U:
4257 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 "d_tm_tm_gmtoff"
4264 From i_time.U:
4265 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 "d_tm_tm_zone"
4271 From i_time.U:
4272 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 "d_tmpnam_r"
4278 From d_tmpnam_r.U:
4279 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 "d_towlower"
4285 From d_towlower.U:
4286 This variable conditionally defines the "HAS_TOWLOWER" symbol,
4288 which indicates to the C program that the towlower() routine is
4289 available.
4290 "d_towupper"
4292 From d_towupper.U:
4293 This variable conditionally defines the "HAS_TOWUPPER" symbol,
4295 which indicates to the C program that the towupper() routine is
4296 available.
4297 "d_trunc"
4299 From d_trunc.U:
4300 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 "d_truncate"
4306 From d_truncate.U:
4307 This variable conditionally defines "HAS_TRUNCATE" if truncate() is
4309 available to truncate files.
4310 "d_truncl"
4312 From d_truncl.U:
4313 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 "d_ttyname_r"
4320 From d_ttyname_r.U:
4321 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 "d_tzname"
4327 From d_tzname.U:
4328 This variable conditionally defines "HAS_TZNAME" if tzname[] is
4330 available to access timezone names.
4331 "d_u32align"
4333 From d_u32align.U:
4334 This variable tells whether you must access character data through
4336 U32-aligned pointers.
4337 "d_ualarm"
4339 From d_ualarm.U:
4340 This variable conditionally defines the "HAS_UALARM" symbol, which
4342 indicates to the C program that the ualarm() routine is available.
4343 "d_umask"
4345 From d_umask.U:
4346 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 "d_uname"
4352 From d_gethname.U:
4353 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 "d_union_semun"
4359 From d_union_semun.U:
4360 This variable conditionally defines "HAS_UNION_SEMUN" if the union
4362 semun is defined by including <sys/sem.h>.
4363 "d_unlinkat"
4365 From d_fsat.U:
4366 This variable conditionally defines the "HAS_UNLINKAT" symbol,
4368 which indicates the "POSIX" unlinkat() function isavailable.
4369 "d_unordered"
4371 From d_unordered.U:
4372 This variable conditionally defines the "HAS_UNORDERED" symbol,
4374 which indicates to the C program that the unordered() routine is
4375 available.
4376 "d_unsetenv"
4378 From d_unsetenv.U:
4379 This variable conditionally defines the "HAS_UNSETENV" symbol,
4381 which indicates to the C program that the unsetenv () routine is
4382 available.
4383 "d_uselocale"
4385 From d_newlocale.U:
4386 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 "d_usleep"
4392 From d_usleep.U:
4393 This variable conditionally defines "HAS_USLEEP" if usleep() is
4395 available to do high granularity sleeps.
4396 "d_usleepproto"
4398 From d_usleepproto.U:
4399 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 "d_ustat"
4406 From d_ustat.U:
4407 This variable conditionally defines "HAS_USTAT" if ustat() is
4409 available to query file system statistics by dev_t.
4410 "d_vendorarch"
4412 From vendorarch.U:
4413 This variable conditionally defined "PERL_VENDORARCH".
4415 "d_vendorbin"
4417 From vendorbin.U:
4418 This variable conditionally defines "PERL_VENDORBIN".
4420 "d_vendorlib"
4422 From vendorlib.U:
4423 This variable conditionally defines "PERL_VENDORLIB".
4425 "d_vendorscript"
4427 From vendorscript.U:
4428 This variable conditionally defines "PERL_VENDORSCRIPT".
4430 "d_vfork"
4432 From d_vfork.U:
4433 This variable conditionally defines the "HAS_VFORK" symbol, which
4435 indicates the vfork() routine is available.
4436 "d_void_closedir"
4438 From d_closedir.U:
4439 This variable conditionally defines "VOID_CLOSEDIR" if closedir()
4441 does not return a value.
4442 "d_voidsig"
4444 From d_voidsig.U:
4445 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 "d_voidtty"
4451 From i_sysioctl.U:
4452 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 "d_vsnprintf"
4459 From d_snprintf.U:
4460 This variable conditionally defines the "HAS_VSNPRINTF" symbol,
4462 which indicates to the C program that the vsnprintf () library
4463 function is available.
4464 "d_wait4"
4466 From d_wait4.U:
4467 This variable conditionally defines the HAS_WAIT4 symbol, which
4469 indicates the wait4() routine is available.
4470 "d_waitpid"
4472 From d_waitpid.U:
4473 This variable conditionally defines "HAS_WAITPID" if waitpid() is
4475 available to wait for child process.
4476 "d_wcrtomb"
4478 From d_wcrtomb.U:
4479 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 "d_wcscmp"
4485 From d_wcscmp.U:
4486 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 "d_wcstombs"
4492 From d_wcstombs.U:
4493 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 "d_wcsxfrm"
4499 From d_wcsxfrm.U:
4500 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 "d_wctomb"
4506 From d_wctomb.U:
4507 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 "d_writev"
4513 From d_writev.U:
4514 This variable conditionally defines the "HAS_WRITEV" symbol, which
4516 indicates to the C program that the writev() routine is available.
4517 "d_xenix"
4519 From Guess.U:
4520 This variable conditionally defines the symbol "XENIX", which
4522 alerts the C program that it runs under Xenix.
4523 "date"
4525 From Loc.U:
4526 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 "db_hashtype"
4532 From i_db.U:
4533 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 "db_prefixtype"
4539 From i_db.U:
4540 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 "db_version_major"
4546 From i_db.U:
4547 This variable contains the major version number of Berkeley "DB"
4549 found in the <db.h> header file.
4550 "db_version_minor"
4552 From i_db.U:
4553 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 "db_version_patch"
4559 From i_db.U:
4560 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 "default_inc_excludes_dot"
4566 From defaultincdot.U:
4567 When defined, remove the legacy . from @"INC"
4569 "direntrytype"
4571 From i_dirent.U:
4572 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 "dlext"
4578 From dlext.U:
4579 This variable contains the extension that is to be used for the
4581 dynamically loaded modules that perl generates.
4582 "dlsrc"
4584 From dlsrc.U:
4585 This variable contains the name of the dynamic loading file that
4587 will be used with the package.
4588 "doubleinfbytes"
4590 From infnan.U:
4591 This variable contains comma-separated list of hexadecimal bytes
4593 for the double precision infinity.
4594 "doublekind"
4596 From longdblfio.U:
4597 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 "doublemantbits"
4609 From mantbits.U:
4610 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 "doublenanbytes"
4618 From infnan.U:
4619 This variable contains comma-separated list of hexadecimal bytes
4621 for the double precision not-a-number.
4622 "doublesize"
4624 From doublesize.U:
4625 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 "drand01"
4630 From randfunc.U:
4631 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 "drand48_r_proto"
4638 From d_drand48_r.U:
4639 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 "dtrace"
4645 From usedtrace.U:
4646 This variable holds the location of the dtrace executable.
4648 "dtraceobject"
4650 From dtraceobject.U:
4651 Whether we need to build an object file with the dtrace tool.
4653 "dtracexnolibs"
4655 From dtraceobject.U:
4656 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 "dynamic_ext"
4662 From Extensions.U:
4663 This variable holds a list of "XS" extension files we want to link
4665 dynamically into the package. It is used by Makefile.
4666 e
4668 "eagain"
4669 From nblock_io.U:
4670 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 "ebcdic"
4676 From ebcdic.U:
4677 This variable conditionally defines "EBCDIC" if this system uses
4679 "EBCDIC" encoding.
4680 "echo"
4682 From Loc.U:
4683 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 "egrep"
4689 From Loc.U:
4690 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 "emacs"
4696 From Loc.U:
4697 This variable is defined but not used by Configure. The value is
4699 the empty string and is not useful.
4700 "endgrent_r_proto"
4702 From d_endgrent_r.U:
4703 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 "endhostent_r_proto"
4709 From d_endhostent_r.U:
4710 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 "endnetent_r_proto"
4716 From d_endnetent_r.U:
4717 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 "endprotoent_r_proto"
4723 From d_endprotoent_r.U:
4724 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 "endpwent_r_proto"
4730 From d_endpwent_r.U:
4731 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 "endservent_r_proto"
4737 From d_endservent_r.U:
4738 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 "eunicefix"
4744 From Init.U:
4745 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 "exe_ext"
4751 From Unix.U:
4752 This is an old synonym for _exe.
4754 "expr"
4756 From Loc.U:
4757 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 "extensions"
4763 From Extensions.U:
4764 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 "extern_C"
4771 From Csym.U:
4772 "ANSI" C requires "extern" where C++ requires 'extern "C"'. This
4774 variable can be used in Configure to do the right thing.
4775 "extras"
4777 From Extras.U:
4778 This variable holds a list of extra modules to install.
4780 f
4782 "fflushNULL"
4783 From fflushall.U:
4784 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 "fflushall"
4791 From fflushall.U:
4792 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 "find"
4799 From Loc.U:
4800 This variable is defined but not used by Configure. The value is
4802 the empty string and is not useful.
4803 "firstmakefile"
4805 From Unix.U:
4806 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 "flex"
4813 From Loc.U:
4814 This variable is defined but not used by Configure. The value is
4816 the empty string and is not useful.
4817 "fpossize"
4819 From fpossize.U:
4820 This variable contains the size of a fpostype in bytes.
4822 "fpostype"
4824 From fpostype.U:
4825 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 "freetype"
4830 From mallocsrc.U:
4831 This variable contains the return type of free(). It is usually
4833 void, but occasionally int.
4834 "from"
4836 From Cross.U:
4837 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 "full_ar"
4843 From Loc_ar.U:
4844 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 "full_csh"
4850 From d_csh.U:
4851 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 "full_sed"
4858 From Loc_sed.U:
4859 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 g
4866 "gccansipedantic"
4867 From gccvers.U:
4868 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 "gccosandvers"
4874 From gccvers.U:
4875 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 "gccversion"
4881 From gccvers.U:
4882 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 "getgrent_r_proto"
4888 From d_getgrent_r.U:
4889 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 "getgrgid_r_proto"
4895 From d_getgrgid_r.U:
4896 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 "getgrnam_r_proto"
4902 From d_getgrnam_r.U:
4903 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 "gethostbyaddr_r_proto"
4909 From d_gethostbyaddr_r.U:
4910 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 "gethostbyname_r_proto"
4917 From d_gethostbyname_r.U:
4918 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 "gethostent_r_proto"
4925 From d_gethostent_r.U:
4926 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 "getlogin_r_proto"
4932 From d_getlogin_r.U:
4933 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 "getnetbyaddr_r_proto"
4939 From d_getnetbyaddr_r.U:
4940 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 "getnetbyname_r_proto"
4947 From d_getnetbyname_r.U:
4948 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 "getnetent_r_proto"
4955 From d_getnetent_r.U:
4956 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 "getprotobyname_r_proto"
4962 From d_getprotobyname_r.U:
4963 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 "getprotobynumber_r_proto"
4970 From d_getprotobynumber_r.U:
4971 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 "getprotoent_r_proto"
4978 From d_getprotoent_r.U:
4979 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 "getpwent_r_proto"
4985 From d_getpwent_r.U:
4986 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 "getpwnam_r_proto"
4992 From d_getpwnam_r.U:
4993 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 "getpwuid_r_proto"
4999 From d_getpwuid_r.U:
5000 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 "getservbyname_r_proto"
5006 From d_getservbyname_r.U:
5007 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 "getservbyport_r_proto"
5014 From d_getservbyport_r.U:
5015 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 "getservent_r_proto"
5022 From d_getservent_r.U:
5023 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 "getspnam_r_proto"
5029 From d_getspnam_r.U:
5030 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 "gidformat"
5036 From gidf.U:
5037 This variable contains the format string used for printing a Gid_t.
5039 "gidsign"
5041 From gidsign.U:
5042 This variable contains the signedness of a gidtype. 1 for
5044 unsigned, -1 for signed.
5045 "gidsize"
5047 From gidsize.U:
5048 This variable contains the size of a gidtype in bytes.
5050 "gidtype"
5052 From gidtype.U:
5053 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 "glibpth"
5059 From libpth.U:
5060 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 "gmake"
5066 From Loc.U:
5067 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 "gmtime_r_proto"
5073 From d_gmtime_r.U:
5074 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 "gnulibc_version"
5080 From d_gnulibc.U:
5081 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 "grep"
5087 From Loc.U:
5088 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 "groupcat"
5094 From nis.U:
5095 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 "groupstype"
5103 From groupstype.U:
5104 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 "gzip"
5111 From Loc.U:
5112 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 h
5118 "h_fcntl"
5119 From h_fcntl.U:
5120 This is variable gets set in various places to tell i_fcntl that
5122 <fcntl.h> should be included.
5123 "h_sysfile"
5125 From h_sysfile.U:
5126 This is variable gets set in various places to tell i_sys_file that
5128 <sys/file.h> should be included.
5129 "hint"
5131 From Oldconfig.U:
5132 Gives the type of hints used for previous answers. May be one of
5134 "default", "recommended" or "previous".
5135 "hostcat"
5137 From nis.U:
5138 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 "hostgenerate"
5146 From Cross.U:
5147 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 "hostosname"
5154 From Cross.U:
5155 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 "hostperl"
5162 From Cross.U:
5163 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 "html1dir"
5169 From html1dir.U:
5170 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 "html1direxp"
5177 From html1dir.U:
5178 This variable is the same as the html1dir variable, but is filename
5180 expanded at configuration time, for convenient use in makefiles.
5181 "html3dir"
5183 From html3dir.U:
5184 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 "html3direxp"
5191 From html3dir.U:
5192 This variable is the same as the html3dir variable, but is filename
5194 expanded at configuration time, for convenient use in makefiles.
5195 i
5197 "i16size"
5198 From perlxv.U:
5199 This variable is the size of an I16 in bytes.
5201 "i16type"
5203 From perlxv.U:
5204 This variable contains the C type used for Perl's I16.
5206 "i32dformat"
5208 From perlx32f.U:
5209 This variable contains the format string used for printing a Perl
5211 I32 as a signed decimal integer.
5212 "i32size"
5214 From perlxv.U:
5215 This variable is the size of an I32 in bytes.
5217 "i32type"
5219 From perlxv.U:
5220 This variable contains the C type used for Perl's I32.
5222 "i64size"
5224 From perlxv.U:
5225 This variable is the size of an I64 in bytes.
5227 "i64type"
5229 From perlxv.U:
5230 This variable contains the C type used for Perl's I64.
5232 "i8size"
5234 From perlxv.U:
5235 This variable is the size of an I8 in bytes.
5237 "i8type"
5239 From perlxv.U:
5240 This variable contains the C type used for Perl's I8.
5242 "i_arpainet"
5244 From i_arpainet.U:
5245 This variable conditionally defines the "I_ARPA_INET" symbol, and
5247 indicates whether a C program should include <arpa/inet.h>.
5248 "i_bfd"
5250 From i_bfd.U:
5251 This variable conditionally defines the "I_BFD" symbol, and
5253 indicates whether a C program can include <bfd.h>.
5254 "i_bsdioctl"
5256 From i_sysioctl.U:
5257 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 "i_crypt"
5263 From i_crypt.U:
5264 This variable conditionally defines the "I_CRYPT" symbol, and
5266 indicates whether a C program should include <crypt.h>.
5267 "i_db"
5269 From i_db.U:
5270 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 "i_dbm"
5276 From i_dbm.U:
5277 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 "i_dirent"
5283 From i_dirent.U:
5284 This variable conditionally defines "I_DIRENT", which indicates to
5286 the C program that it should include <dirent.h>.
5287 "i_dlfcn"
5289 From i_dlfcn.U:
5290 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 "i_execinfo"
5296 From i_execinfo.U:
5297 This variable conditionally defines the "I_EXECINFO" symbol, and
5299 indicates whether a C program may include <execinfo.h>, for
5300 backtrace() support.
5301 "i_fcntl"
5303 From i_fcntl.U:
5304 This variable controls the value of "I_FCNTL" (which tells the C
5306 program to include <fcntl.h>).
5307 "i_fenv"
5309 From i_fenv.U:
5310 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 "i_fp"
5316 From i_fp.U:
5317 This variable conditionally defines the "I_FP" symbol, and
5319 indicates whether a C program should include <fp.h>.
5320 "i_fp_class"
5322 From i_fp_class.U:
5323 This variable conditionally defines the "I_FP_CLASS" symbol, and
5325 indicates whether a C program should include <fp_class.h>.
5326 "i_gdbm"
5328 From i_gdbm.U:
5329 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 "i_gdbm_ndbm"
5335 From i_ndbm.U:
5336 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 "i_gdbmndbm"
5343 From i_ndbm.U:
5344 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 "i_grp"
5351 From i_grp.U:
5352 This variable conditionally defines the "I_GRP" symbol, and
5354 indicates whether a C program should include <grp.h>.
5355 "i_ieeefp"
5357 From i_ieeefp.U:
5358 This variable conditionally defines the "I_IEEEFP" symbol, and
5360 indicates whether a C program should include <ieeefp.h>.
5361 "i_inttypes"
5363 From i_inttypes.U:
5364 This variable conditionally defines the "I_INTTYPES" symbol, and
5366 indicates whether a C program should include <inttypes.h>.
5367 "i_langinfo"
5369 From i_langinfo.U:
5370 This variable conditionally defines the "I_LANGINFO" symbol, and
5372 indicates whether a C program should include <langinfo.h>.
5373 "i_libutil"
5375 From i_libutil.U:
5376 This variable conditionally defines the "I_LIBUTIL" symbol, and
5378 indicates whether a C program should include <libutil.h>.
5379 "i_locale"
5381 From i_locale.U:
5382 This variable conditionally defines the "I_LOCALE" symbol, and
5384 indicates whether a C program should include <locale.h>.
5385 "i_machcthr"
5387 From i_machcthr.U:
5388 This variable conditionally defines the "I_MACH_CTHREADS" symbol,
5390 and indicates whether a C program should include <mach/cthreads.h>.
5391 "i_malloc"
5393 From i_malloc.U:
5394 This variable conditionally defines the "I_MALLOC" symbol, and
5396 indicates whether a C program should include <malloc.h>.
5397 "i_mallocmalloc"
5399 From i_mallocmalloc.U:
5400 This variable conditionally defines the "I_MALLOCMALLOC" symbol,
5402 and indicates whether a C program should include <malloc/malloc.h>.
5403 "i_mntent"
5405 From i_mntent.U:
5406 This variable conditionally defines the "I_MNTENT" symbol, and
5408 indicates whether a C program should include <mntent.h>.
5409 "i_ndbm"
5411 From i_ndbm.U:
5412 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 "i_netdb"
5418 From i_netdb.U:
5419 This variable conditionally defines the "I_NETDB" symbol, and
5421 indicates whether a C program should include <netdb.h>.
5422 "i_neterrno"
5424 From i_neterrno.U:
5425 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 "i_netinettcp"
5431 From i_netinettcp.U:
5432 This variable conditionally defines the "I_NETINET_TCP" symbol, and
5434 indicates whether a C program should include <netinet/tcp.h>.
5435 "i_niin"
5437 From i_niin.U:
5438 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 "i_poll"
5444 From i_poll.U:
5445 This variable conditionally defines the "I_POLL" symbol, and
5447 indicates whether a C program should include <poll.h>.
5448 "i_prot"
5450 From i_prot.U:
5451 This variable conditionally defines the "I_PROT" symbol, and
5453 indicates whether a C program should include <prot.h>.
5454 "i_pthread"
5456 From i_pthread.U:
5457 This variable conditionally defines the "I_PTHREAD" symbol, and
5459 indicates whether a C program should include <pthread.h>.
5460 "i_pwd"
5462 From i_pwd.U:
5463 This variable conditionally defines "I_PWD", which indicates to the
5465 C program that it should include <pwd.h>.
5466 "i_quadmath"
5468 From i_quadmath.U:
5469 This variable conditionally defines "I_QUADMATH", which indicates
5471 to the C program that it should include <quadmath.h>.
5472 "i_rpcsvcdbm"
5474 From i_dbm.U:
5475 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 "i_sgtty"
5482 From i_termio.U:
5483 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 "i_shadow"
5489 From i_shadow.U:
5490 This variable conditionally defines the "I_SHADOW" symbol, and
5492 indicates whether a C program should include <shadow.h>.
5493 "i_socks"
5495 From i_socks.U:
5496 This variable conditionally defines the "I_SOCKS" symbol, and
5498 indicates whether a C program should include <socks.h>.
5499 "i_stdbool"
5501 From i_stdbool.U:
5502 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 "i_stdint"
5508 From i_stdint.U:
5509 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 "i_stdlib"
5515 From i_stdlib.U:
5516 This variable unconditionally defines the "I_STDLIB" symbol.
5518 "i_sunmath"
5520 From i_sunmath.U:
5521 This variable conditionally defines the "I_SUNMATH" symbol, and
5523 indicates whether a C program should include <sunmath.h>.
5524 "i_sysaccess"
5526 From i_sysaccess.U:
5527 This variable conditionally defines the "I_SYS_ACCESS" symbol, and
5529 indicates whether a C program should include <sys/access.h>.
5530 "i_sysdir"
5532 From i_sysdir.U:
5533 This variable conditionally defines the "I_SYS_DIR" symbol, and
5535 indicates whether a C program should include <sys/dir.h>.
5536 "i_sysfile"
5538 From i_sysfile.U:
5539 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 "i_sysfilio"
5545 From i_sysioctl.U:
5546 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 "i_sysin"
5552 From i_niin.U:
5553 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 "i_sysioctl"
5559 From i_sysioctl.U:
5560 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 "i_syslog"
5566 From i_syslog.U:
5567 This variable conditionally defines the "I_SYSLOG" symbol, and
5569 indicates whether a C program should include <syslog.h>.
5570 "i_sysmman"
5572 From i_sysmman.U:
5573 This variable conditionally defines the "I_SYS_MMAN" symbol, and
5575 indicates whether a C program should include <sys/mman.h>.
5576 "i_sysmode"
5578 From i_sysmode.U:
5579 This variable conditionally defines the "I_SYSMODE" symbol, and
5581 indicates whether a C program should include <sys/mode.h>.
5582 "i_sysmount"
5584 From i_sysmount.U:
5585 This variable conditionally defines the "I_SYSMOUNT" symbol, and
5587 indicates whether a C program should include <sys/mount.h>.
5588 "i_sysndir"
5590 From i_sysndir.U:
5591 This variable conditionally defines the "I_SYS_NDIR" symbol, and
5593 indicates whether a C program should include <sys/ndir.h>.
5594 "i_sysparam"
5596 From i_sysparam.U:
5597 This variable conditionally defines the "I_SYS_PARAM" symbol, and
5599 indicates whether a C program should include <sys/param.h>.
5600 "i_syspoll"
5602 From i_syspoll.U:
5603 This variable conditionally defines the "I_SYS_POLL" symbol, which
5605 indicates to the C program that it should include <sys/poll.h>.
5606 "i_sysresrc"
5608 From i_sysresrc.U:
5609 This variable conditionally defines the "I_SYS_RESOURCE" symbol,
5611 and indicates whether a C program should include <sys/resource.h>.
5612 "i_syssecrt"
5614 From i_syssecrt.U:
5615 This variable conditionally defines the "I_SYS_SECURITY" symbol,
5617 and indicates whether a C program should include <sys/security.h>.
5618 "i_sysselct"
5620 From i_sysselct.U:
5621 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 "i_syssockio"
5627 From i_sysioctl.U:
5628 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 "i_sysstat"
5634 From i_sysstat.U:
5635 This variable conditionally defines the "I_SYS_STAT" symbol, and
5637 indicates whether a C program should include <sys/stat.h>.
5638 "i_sysstatfs"
5640 From i_sysstatfs.U:
5641 This variable conditionally defines the "I_SYSSTATFS" symbol, and
5643 indicates whether a C program should include <sys/statfs.h>.
5644 "i_sysstatvfs"
5646 From i_sysstatvfs.U:
5647 This variable conditionally defines the "I_SYSSTATVFS" symbol, and
5649 indicates whether a C program should include <sys/statvfs.h>.
5650 "i_syssyscall"
5652 From i_syssyscall.U:
5653 This variable conditionally defines the "I_SYS_SYSCALL" symbol, and
5655 indicates whether a C program should include <sys/syscall.h>.
5656 "i_systime"
5658 From i_time.U:
5659 This variable conditionally defines "I_SYS_TIME", which indicates
5661 to the C program that it should include <sys/time.h>.
5662 "i_systimek"
5664 From i_time.U:
5665 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 "i_systimes"
5671 From i_systimes.U:
5672 This variable conditionally defines the "I_SYS_TIMES" symbol, and
5674 indicates whether a C program should include <sys/times.h>.
5675 "i_systypes"
5677 From i_systypes.U:
5678 This variable conditionally defines the "I_SYS_TYPES" symbol, and
5680 indicates whether a C program should include <sys/types.h>.
5681 "i_sysuio"
5683 From i_sysuio.U:
5684 This variable conditionally defines the "I_SYSUIO" symbol, and
5686 indicates whether a C program should include <sys/uio.h>.
5687 "i_sysun"
5689 From i_sysun.U:
5690 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 "i_sysutsname"
5696 From i_sysutsname.U:
5697 This variable conditionally defines the "I_SYSUTSNAME" symbol, and
5699 indicates whether a C program should include <sys/utsname.h>.
5700 "i_sysvfs"
5702 From i_sysvfs.U:
5703 This variable conditionally defines the "I_SYSVFS" symbol, and
5705 indicates whether a C program should include <sys/vfs.h>.
5706 "i_syswait"
5708 From i_syswait.U:
5709 This variable conditionally defines "I_SYS_WAIT", which indicates
5711 to the C program that it should include <sys/wait.h>.
5712 "i_termio"
5714 From i_termio.U:
5715 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 "i_termios"
5721 From i_termio.U:
5722 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 "i_time"
5728 From i_time.U:
5729 This variable unconditionally defines "I_TIME", which indicates to
5731 the C program that it should include <time.h>.
5732 "i_unistd"
5734 From i_unistd.U:
5735 This variable conditionally defines the "I_UNISTD" symbol, and
5737 indicates whether a C program should include <unistd.h>.
5738 "i_ustat"
5740 From i_ustat.U:
5741 This variable conditionally defines the "I_USTAT" symbol, and
5743 indicates whether a C program should include <ustat.h>.
5744 "i_utime"
5746 From i_utime.U:
5747 This variable conditionally defines the "I_UTIME" symbol, and
5749 indicates whether a C program should include <utime.h>.
5750 "i_vfork"
5752 From i_vfork.U:
5753 This variable conditionally defines the "I_VFORK" symbol, and
5755 indicates whether a C program should include vfork.h.
5756 "i_wchar"
5758 From i_wchar.U:
5759 This variable conditionally defines the "I_WCHAR" symbol, that
5761 indicates whether a C program may include <wchar.h>.
5762 "i_wctype"
5764 From i_wctype.U:
5765 This variable conditionally defines the "I_WCTYPE" symbol, that
5767 indicates whether a C program may include <wctype.h>.
5768 "i_xlocale"
5770 From d_newlocale.U:
5771 This symbol, if defined, indicates to the C program that the header
5773 xlocale.h is available. See also xlocale_needed.
5774 "ignore_versioned_solibs"
5776 From libs.U:
5777 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 "inc_version_list"
5783 From inc_version_list.U:
5784 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 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 "inc_version_list_init"
5798 From inc_version_list.U:
5799 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 "incpath"
5805 From usrinc.U:
5806 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 "incpth"
5812 From libpth.U:
5813 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 "inews"
5819 From Loc.U:
5820 This variable is defined but not used by Configure. The value is
5822 the empty string and is not useful.
5823 "initialinstalllocation"
5825 From bin.U:
5826 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 "installarchlib"
5835 From archlib.U:
5836 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 "installbin"
5842 From bin.U:
5843 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 "installhtml1dir"
5849 From html1dir.U:
5850 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 "installhtml3dir"
5856 From html3dir.U:
5857 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 "installman1dir"
5863 From man1dir.U:
5864 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 "installman3dir"
5872 From man3dir.U:
5873 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 "installprefix"
5881 From installprefix.U:
5882 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 "installprefixexp"
5891 From installprefix.U:
5892 This variable holds the full absolute path of installprefix with
5894 all ~-expansion done.
5895 "installprivlib"
5897 From privlib.U:
5898 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 "installscript"
5904 From scriptdir.U:
5905 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 "installsitearch"
5912 From sitearch.U:
5913 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 "installsitebin"
5919 From sitebin.U:
5920 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 "installsitehtml1dir"
5927 From sitehtml1dir.U:
5928 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 "installsitehtml3dir"
5936 From sitehtml3dir.U:
5937 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 "installsitelib"
5945 From sitelib.U:
5946 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 "installsiteman1dir"
5952 From siteman1dir.U:
5953 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 "installsiteman3dir"
5961 From siteman3dir.U:
5962 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 "installsitescript"
5970 From sitescript.U:
5971 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 "installstyle"
5978 From installstyle.U:
5979 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 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 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 This may later be extended to include other information, so be
6007 careful with pattern-matching on the results.
6008 For compatibility with perl5.005 and earlier, the default setting
6010 is based on whether or not $prefix contains the string "perl".
6011 "installusrbinperl"
6013 From instubperl.U:
6014 This variable tells whether Perl should be installed also as
6016 /usr/bin/perl in addition to $installbin/perl
6017 "installvendorarch"
6019 From vendorarch.U:
6020 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 "installvendorbin"
6026 From vendorbin.U:
6027 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 "installvendorhtml1dir"
6033 From vendorhtml1dir.U:
6034 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 "installvendorhtml3dir"
6040 From vendorhtml3dir.U:
6041 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 "installvendorlib"
6047 From vendorlib.U:
6048 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 "installvendorman1dir"
6054 From vendorman1dir.U:
6055 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 "installvendorman3dir"
6061 From vendorman3dir.U:
6062 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 "installvendorscript"
6068 From vendorscript.U:
6069 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 "intsize"
6075 From intsize.U:
6076 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 "issymlink"
6081 From issymlink.U:
6082 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 "ivdformat"
6088 From perlxvf.U:
6089 This variable contains the format string used for printing a Perl
6091 "IV" as a signed decimal integer.
6092 "ivsize"
6094 From perlxv.U:
6095 This variable is the size of an "IV" in bytes.
6097 "ivtype"
6099 From perlxv.U:
6100 This variable contains the C type used for Perl's "IV".
6102 k
6104 "known_extensions"
6105 From Extensions.U:
6106 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 "ksh"
6115 From Loc.U:
6116 This variable is defined but not used by Configure. The value is
6118 the empty string and is not useful.
6119 l
6121 "ld"
6122 From dlsrc.U:
6123 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 "ld_can_script"
6130 From dlsrc.U:
6131 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 "lddlflags"
6137 From dlsrc.U:
6138 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 "ldflags"
6145 From ccflags.U:
6146 This variable contains any additional C loader flags desired by the
6148 user. It is up to the Makefile to use this.
6149 "ldflags_uselargefiles"
6151 From uselfs.U:
6152 This variable contains the loader flags needed by large file builds
6154 and added to ldflags by hints files.
6155 "ldlibpthname"
6157 From libperl.U:
6158 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 "less"
6164 From Loc.U:
6165 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 "lib_ext"
6171 From Unix.U:
6172 This is an old synonym for _a.
6174 "libc"
6176 From libc.U:
6177 This variable contains the location of the C library.
6179 "libperl"
6181 From libperl.U:
6182 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 "libpth"
6190 From libpth.U:
6191 This variable holds the general path (space-separated) used to find
6193 libraries. It is intended to be used by other units.
6194 "libs"
6196 From libs.U:
6197 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 "libsdirs"
6202 From libs.U:
6203 This variable holds the directory names aka dirnames of the
6205 libraries we found and accepted, duplicates are removed.
6206 "libsfiles"
6208 From libs.U:
6209 This variable holds the filenames aka basenames of the libraries we
6211 found and accepted.
6212 "libsfound"
6214 From libs.U:
6215 This variable holds the full pathnames of the libraries we found
6217 and accepted.
6218 "libspath"
6220 From libs.U:
6221 This variable holds the directory names probed for libraries.
6223 "libswanted"
6225 From Myinit.U:
6226 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 "libswanted_uselargefiles"
6232 From uselfs.U:
6233 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 "line"
6240 From Loc.U:
6241 This variable is defined but not used by Configure. The value is
6243 the empty string and is not useful.
6244 "lint"
6246 From Loc.U:
6247 This variable is defined but not used by Configure. The value is
6249 the empty string and is not useful.
6250 "lkflags"
6252 From ccflags.U:
6253 This variable contains any additional C partial linker flags
6255 desired by the user. It is up to the Makefile to use this.
6256 "ln"
6258 From Loc.U:
6259 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 "lns"
6265 From lns.U:
6266 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 "localtime_r_proto"
6272 From d_localtime_r.U:
6273 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 "locincpth"
6279 From ccflags.U:
6280 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 "loclibpth"
6288 From libpth.U:
6289 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 "longdblinfbytes"
6295 From infnan.U:
6296 This variable contains comma-separated list of hexadecimal bytes
6298 for the long double precision infinity.
6299 "longdblkind"
6301 From d_longdbl.U:
6302 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 "longdblmantbits"
6313 From mantbits.U:
6314 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 "longdblnanbytes"
6322 From infnan.U:
6323 This variable contains comma-separated list of hexadecimal bytes
6325 for the long double precision not-a-number.
6326 "longdblsize"
6328 From d_longdbl.U:
6329 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 "longlongsize"
6336 From d_longlong.U:
6337 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 "longsize"
6343 From intsize.U:
6344 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 "lp"
6349 From Loc.U:
6350 This variable is defined but not used by Configure. The value is
6352 the empty string and is not useful.
6353 "lpr"
6355 From Loc.U:
6356 This variable is defined but not used by Configure. The value is
6358 the empty string and is not useful.
6359 "ls"
6361 From Loc.U:
6362 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 "lseeksize"
6368 From lseektype.U:
6369 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 "lseektype"
6375 From lseektype.U:
6376 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 m
6382 "mail"
6383 From Loc.U:
6384 This variable is defined but not used by Configure. The value is
6386 the empty string and is not useful.
6387 "mailx"
6389 From Loc.U:
6390 This variable is defined but not used by Configure. The value is
6392 the empty string and is not useful.
6393 "make"
6395 From Loc.U:
6396 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 "make_set_make"
6402 From make.U:
6403 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 make_set_make="#" # If your make program handles this for
6410 you,
6411 make_set_make="MAKE=$make" # if it doesn't.
6413 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 "mallocobj"
6419 From mallocsrc.U:
6420 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 "mallocsrc"
6427 From mallocsrc.U:
6428 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 "malloctype"
6435 From mallocsrc.U:
6436 This variable contains the kind of ptr returned by malloc and
6438 realloc.
6439 "man1dir"
6441 From man1dir.U:
6442 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 "man1direxp"
6449 From man1dir.U:
6450 This variable is the same as the man1dir variable, but is filename
6452 expanded at configuration time, for convenient use in makefiles.
6453 "man1ext"
6455 From man1dir.U:
6456 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 "man3dir"
6462 From man3dir.U:
6463 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 "man3direxp"
6470 From man3dir.U:
6471 This variable is the same as the man3dir variable, but is filename
6473 expanded at configuration time, for convenient use in makefiles.
6474 "man3ext"
6476 From man3dir.U:
6477 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 "mips_type"
6483 From usrinc.U:
6484 This variable holds the environment type for the mips system.
6486 Possible values are "BSD 4.3" and "System V".
6487 "mistrustnm"
6489 From Csym.U:
6490 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 "mkdir"
6500 From Loc.U:
6501 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 "mmaptype"
6507 From d_mmap.U:
6508 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 "modetype"
6514 From modetype.U:
6515 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 "more"
6521 From Loc.U:
6522 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 "multiarch"
6528 From multiarch.U:
6529 This variable conditionally defines the "MULTIARCH" symbol which
6531 signifies the presence of multiplatform files. This is normally
6532 set by hints files.
6533 "mv"
6535 From Loc.U:
6536 This variable is defined but not used by Configure. The value is
6538 the empty string and is not useful.
6539 "myarchname"
6541 From archname.U:
6542 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 "mydomain"
6548 From myhostname.U:
6549 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 "myhostname"
6557 From myhostname.U:
6558 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 "myuname"
6566 From Oldconfig.U:
6567 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 n
6573 "n" From n.U:
6574 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 "need_va_copy"
6580 From need_va_copy.U:
6581 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 "netdb_hlen_type"
6591 From netdbtype.U:
6592 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 "netdb_host_type"
6598 From netdbtype.U:
6599 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 "netdb_name_type"
6606 From netdbtype.U:
6607 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 "netdb_net_type"
6613 From netdbtype.U:
6614 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 "nm"
6620 From Loc.U:
6621 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 "nm_opt"
6627 From usenm.U:
6628 This variable holds the options that may be necessary for nm.
6630 "nm_so_opt"
6632 From usenm.U:
6633 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 "nonxs_ext"
6642 From Extensions.U:
6643 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 "nroff"
6650 From Loc.U:
6651 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 "nvEUformat"
6657 From perlxvf.U:
6658 This variable contains the format string used for printing a Perl
6660 "NV" using %E-ish floating point format.
6661 "nvFUformat"
6663 From perlxvf.U:
6664 This variable contains the format string used for printing a Perl
6666 "NV" using %F-ish floating point format.
6667 "nvGUformat"
6669 From perlxvf.U:
6670 This variable contains the format string used for printing a Perl
6672 "NV" using %G-ish floating point format.
6673 "nv_overflows_integers_at"
6675 From perlxv.U:
6676 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 "nv_preserves_uv_bits"
6682 From perlxv.U:
6683 This variable indicates how many of bits type uvtype a variable
6685 nvtype can preserve.
6686 "nveformat"
6688 From perlxvf.U:
6689 This variable contains the format string used for printing a Perl
6691 "NV" using %e-ish floating point format.
6692 "nvfformat"
6694 From perlxvf.U:
6695 This variable contains the format string used for printing a Perl
6697 "NV" using %f-ish floating point format.
6698 "nvgformat"
6700 From perlxvf.U:
6701 This variable contains the format string used for printing a Perl
6703 "NV" using %g-ish floating point format.
6704 "nvmantbits"
6706 From mantbits.U:
6707 This variable tells how many bits the mantissa of a Perl "NV" has,
6709 not including the possible implicit bit.
6710 "nvsize"
6712 From perlxv.U:
6713 This variable is the size of a Perl "NV" in bytes. Note that some
6715 floating point formats have unused bytes.
6716 "nvtype"
6718 From perlxv.U:
6719 This variable contains the C type used for Perl's "NV".
6721 o
6723 "o_nonblock"
6724 From nblock_io.U:
6725 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 "obj_ext"
6733 From Unix.U:
6734 This is an old synonym for _o.
6736 "old_pthread_create_joinable"
6738 From d_pthrattrj.U:
6739 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 "optimize"
6746 From ccflags.U:
6747 This variable contains any optimizer/debugger flag that should be
6749 used. It is up to the Makefile to use it.
6750 "orderlib"
6752 From orderlib.U:
6753 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 "osname"
6760 From Oldconfig.U:
6761 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 "osvers"
6768 From Oldconfig.U:
6769 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 "otherlibdirs"
6780 From otherlibdirs.U:
6781 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 p
6791 "package"
6792 From package.U:
6793 This variable contains the name of the package being constructed.
6795 It is primarily intended for the use of later Configure units.
6796 "pager"
6798 From pager.U:
6799 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 "passcat"
6805 From nis.U:
6806 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 "patchlevel"
6814 From patchlevel.U:
6815 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 "path_sep"
6822 From Unix.U:
6823 This is an old synonym for p_ in Head.U, the character used to
6825 separate elements in the command shell search "PATH".
6826 "perl"
6828 From Loc.U:
6829 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 "perl5"
6835 From perl5.U:
6836 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 "perl_patchlevel"
6842 From patchlevel.U:
6843 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 "perl_static_inline"
6851 From d_static_inline.U:
6852 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 "perl_thread_local"
6860 From d_thread_local.U:
6861 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 "perladmin"
6867 From perladmin.U:
6868 Electronic mail address of the perl5 administrator.
6870 "perllibs"
6872 From End.U:
6873 The list of libraries needed by Perl only (any libraries needed by
6875 extensions only will by dropped, if using dynamic loading).
6876 "perlpath"
6878 From perlpath.U:
6879 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 "pg"
6891 From Loc.U:
6892 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 "phostname"
6898 From myhostname.U:
6899 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 "pidtype"
6906 From pidtype.U:
6907 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 "plibpth"
6913 From libpth.U:
6914 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 "pmake"
6920 From Loc.U:
6921 This variable is defined but not used by Configure. The value is
6923 the empty string and is not useful.
6924 "pr"
6926 From Loc.U:
6927 This variable is defined but not used by Configure. The value is
6929 the empty string and is not useful.
6930 "prefix"
6932 From prefix.U:
6933 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 "prefixexp"
6941 From prefix.U:
6942 This variable holds the full absolute path of the directory below
6944 which the user will install the package. Derived from prefix.
6945 "privlib"
6947 From privlib.U:
6948 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 "privlibexp"
6956 From privlib.U:
6957 This variable is the ~name expanded version of privlib, so that you
6959 may use it directly in Makefiles or shell scripts.
6960 "procselfexe"
6962 From d_procselfexe.U:
6963 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 "ptrsize"
6969 From ptrsize.U:
6970 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 q
6975 "quadkind"
6976 From quadtype.U:
6977 This variable, if defined, encodes the type of a quad: 1 = int, 2 =
6979 long, 3 = long long, 4 = int64_t.
6980 "quadtype"
6982 From quadtype.U:
6983 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 r
6988 "randbits"
6989 From randfunc.U:
6990 Indicates how many bits are produced by the function used to
6992 generate normalized random numbers.
6993 "randfunc"
6995 From randfunc.U:
6996 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 "random_r_proto"
7003 From d_random_r.U:
7004 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 "randseedtype"
7010 From randfunc.U:
7011 Indicates the type of the argument of the seedfunc.
7013 "ranlib"
7015 From orderlib.U:
7016 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 "rd_nodata"
7022 From nblock_io.U:
7023 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 "readdir64_r_proto"
7030 From d_readdir64_r.U:
7031 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 "readdir_r_proto"
7037 From d_readdir_r.U:
7038 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 "revision"
7044 From patchlevel.U:
7045 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 "rm"
7051 From Loc.U:
7052 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 "rm_try"
7058 From Unix.U:
7059 This is a cleanup variable for try test programs. Internal
7061 Configure use only.
7062 "rmail"
7064 From Loc.U:
7065 This variable is defined but not used by Configure. The value is
7067 the empty string and is not useful.
7068 "run"
7070 From Cross.U:
7071 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 "runnm"
7078 From usenm.U:
7079 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 s
7085 "sGMTIME_max"
7086 From time_size.U:
7087 This variable defines the maximum value of the time_t offset that
7089 the system function gmtime () accepts
7090 "sGMTIME_min"
7092 From time_size.U:
7093 This variable defines the minimum value of the time_t offset that
7095 the system function gmtime () accepts
7096 "sLOCALTIME_max"
7098 From time_size.U:
7099 This variable defines the maximum value of the time_t offset that
7101 the system function localtime () accepts
7102 "sLOCALTIME_min"
7104 From time_size.U:
7105 This variable defines the minimum value of the time_t offset that
7107 the system function localtime () accepts
7108 "sPRIEUldbl"
7110 From longdblfio.U:
7111 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 "sPRIFUldbl"
7118 From longdblfio.U:
7119 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 "sPRIGUldbl"
7126 From longdblfio.U:
7127 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 "sPRIXU64"
7134 From quadfio.U:
7135 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 "sPRId64"
7142 From quadfio.U:
7143 This variable, if defined, contains the string used by stdio to
7145 format 64-bit decimal numbers (format "d") for output.
7146 "sPRIeldbl"
7148 From longdblfio.U:
7149 This variable, if defined, contains the string used by stdio to
7151 format long doubles (format "e") for output.
7152 "sPRIfldbl"
7154 From longdblfio.U:
7155 This variable, if defined, contains the string used by stdio to
7157 format long doubles (format "f") for output.
7158 "sPRIgldbl"
7160 From longdblfio.U:
7161 This variable, if defined, contains the string used by stdio to
7163 format long doubles (format "g") for output.
7164 "sPRIi64"
7166 From quadfio.U:
7167 This variable, if defined, contains the string used by stdio to
7169 format 64-bit decimal numbers (format "i") for output.
7170 "sPRIo64"
7172 From quadfio.U:
7173 This variable, if defined, contains the string used by stdio to
7175 format 64-bit octal numbers (format "o") for output.
7176 "sPRIu64"
7178 From quadfio.U:
7179 This variable, if defined, contains the string used by stdio to
7181 format 64-bit unsigned decimal numbers (format "u") for output.
7182 "sPRIx64"
7184 From quadfio.U:
7185 This variable, if defined, contains the string used by stdio to
7187 format 64-bit hexadecimal numbers (format "x") for output.
7188 "sSCNfldbl"
7190 From longdblfio.U:
7191 This variable, if defined, contains the string used by stdio to
7193 format long doubles (format "f") for input.
7194 "sched_yield"
7196 From d_pthread_y.U:
7197 This variable defines the way to yield the execution of the current
7199 thread.
7200 "scriptdir"
7202 From scriptdir.U:
7203 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 "scriptdirexp"
7211 From scriptdir.U:
7212 This variable is the same as scriptdir, but is filename expanded at
7214 configuration time, for programs not wanting to bother with it.
7215 "sed"
7217 From Loc.U:
7218 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 "seedfunc"
7224 From randfunc.U:
7225 Indicates the random number generating seed function. Values
7227 include srand48, srandom, and srand.
7228 "selectminbits"
7230 From selectminbits.U:
7231 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 "selecttype"
7239 From selecttype.U:
7240 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 "sendmail"
7247 From Loc.U:
7248 This variable is defined but not used by Configure. The value is
7250 the empty string and is not useful.
7251 "setgrent_r_proto"
7253 From d_setgrent_r.U:
7254 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 "sethostent_r_proto"
7260 From d_sethostent_r.U:
7261 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 "setlocale_r_proto"
7267 From d_setlocale_r.U:
7268 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 "setnetent_r_proto"
7274 From d_setnetent_r.U:
7275 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 "setprotoent_r_proto"
7281 From d_setprotoent_r.U:
7282 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 "setpwent_r_proto"
7288 From d_setpwent_r.U:
7289 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 "setservent_r_proto"
7295 From d_setservent_r.U:
7296 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 "sh"
7302 From sh.U:
7303 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 "shar"
7313 From Loc.U:
7314 This variable is defined but not used by Configure. The value is
7316 the empty string and is not useful.
7317 "sharpbang"
7319 From spitshell.U:
7320 This variable contains the string #! if this system supports that
7322 construct.
7323 "shmattype"
7325 From d_shmat.U:
7326 This symbol contains the type of pointer returned by shmat(). It
7328 can be "void *" or "char *".
7329 "shortsize"
7331 From intsize.U:
7332 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 "shrpenv"
7337 From libperl.U:
7338 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 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 "shsharp"
7354 From spitshell.U:
7355 This variable tells further Configure units whether your sh can
7357 handle # comments.
7358 "sig_count"
7360 From sig_name.U:
7361 This variable holds a number larger than the largest valid signal
7363 number. This is usually the same as the "NSIG" macro.
7364 "sig_name"
7366 From sig_name.U:
7367 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 "sig_name_init"
7373 From sig_name.U:
7374 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 "sig_num"
7382 From sig_name.U:
7383 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 "sig_num_init"
7391 From sig_name.U:
7392 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 "sig_size"
7399 From sig_name.U:
7400 This variable contains the number of elements of the sig_name and
7402 sig_num arrays.
7403 "signal_t"
7405 From d_voidsig.U:
7406 This variable holds the type of the signal handler (void or int).
7408 "sitearch"
7410 From sitearch.U:
7411 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 "sitearchexp"
7422 From sitearch.U:
7423 This variable is the ~name expanded version of sitearch, so that
7425 you may use it directly in Makefiles or shell scripts.
7426 "sitebin"
7428 From sitebin.U:
7429 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 "sitebinexp"
7440 From sitebin.U:
7441 This is the same as the sitebin variable, but is filename expanded
7443 at configuration time, for use in your makefiles.
7444 "sitehtml1dir"
7446 From sitehtml1dir.U:
7447 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 "sitehtml1direxp"
7458 From sitehtml1dir.U:
7459 This variable is the same as the sitehtml1dir variable, but is
7461 filename expanded at configuration time, for convenient use in
7462 makefiles.
7463 "sitehtml3dir"
7465 From sitehtml3dir.U:
7466 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 "sitehtml3direxp"
7477 From sitehtml3dir.U:
7478 This variable is the same as the sitehtml3dir variable, but is
7480 filename expanded at configuration time, for convenient use in
7481 makefiles.
7482 "sitelib"
7484 From sitelib.U:
7485 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 "sitelib_stem"
7496 From sitelib.U:
7497 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 "sitelibexp"
7504 From sitelib.U:
7505 This variable is the ~name expanded version of sitelib, so that you
7507 may use it directly in Makefiles or shell scripts.
7508 "siteman1dir"
7510 From siteman1dir.U:
7511 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 "siteman1direxp"
7522 From siteman1dir.U:
7523 This variable is the same as the siteman1dir variable, but is
7525 filename expanded at configuration time, for convenient use in
7526 makefiles.
7527 "siteman3dir"
7529 From siteman3dir.U:
7530 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 "siteman3direxp"
7541 From siteman3dir.U:
7542 This variable is the same as the siteman3dir variable, but is
7544 filename expanded at configuration time, for convenient use in
7545 makefiles.
7546 "siteprefix"
7548 From siteprefix.U:
7549 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 "siteprefixexp"
7555 From siteprefix.U:
7556 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 "sitescript"
7562 From sitescript.U:
7563 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 "sitescriptexp"
7574 From sitescript.U:
7575 This is the same as the sitescript variable, but is filename
7577 expanded at configuration time, for use in your makefiles.
7578 "sizesize"
7580 From sizesize.U:
7581 This variable contains the size of a sizetype in bytes.
7583 "sizetype"
7585 From sizetype.U:
7586 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 "sleep"
7592 From Loc.U:
7593 This variable is defined but not used by Configure. The value is
7595 the empty string and is not useful.
7596 "smail"
7598 From Loc.U:
7599 This variable is defined but not used by Configure. The value is
7601 the empty string and is not useful.
7602 "so"
7604 From so.U:
7605 This variable holds the extension used to identify shared libraries
7607 (also known as shared objects) on the system. Usually set to "so".
7608 "sockethdr"
7610 From d_socket.U:
7611 This variable has any cpp "-I" flags needed for socket support.
7613 "socketlib"
7615 From d_socket.U:
7616 This variable has the names of any libraries needed for socket
7618 support.
7619 "socksizetype"
7621 From socksizetype.U:
7622 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 "sort"
7628 From Loc.U:
7629 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 "spackage"
7635 From package.U:
7636 This variable contains the name of the package being constructed,
7638 with the first letter uppercased, i.e. suitable for starting
7639 sentences.
7640 "spitshell"
7642 From spitshell.U:
7643 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 "srand48_r_proto"
7649 From d_srand48_r.U:
7650 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 "srandom_r_proto"
7656 From d_srandom_r.U:
7657 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 "src"
7663 From src.U:
7664 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 "ssizetype"
7671 From ssizetype.U:
7672 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 "st_dev_sign"
7679 From st_dev_def.U:
7680 This variable contains the signedness of struct stat's st_dev. 1
7682 for unsigned, -1 for signed.
7683 "st_dev_size"
7685 From st_dev_def.U:
7686 This variable contains the size of struct stat's st_dev in bytes.
7688 "st_ino_sign"
7690 From st_ino_def.U:
7691 This variable contains the signedness of struct stat's st_ino. 1
7693 for unsigned, -1 for signed.
7694 "st_ino_size"
7696 From st_ino_def.U:
7697 This variable contains the size of struct stat's st_ino in bytes.
7699 "startperl"
7701 From startperl.U:
7702 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 "startsh"
7712 From startsh.U:
7713 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 "static_ext"
7719 From Extensions.U:
7720 This variable holds a list of "XS" extension files we want to link
7722 statically into the package. It is used by Makefile.
7723 "stdchar"
7725 From stdchar.U:
7726 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 "stdio_base"
7731 From d_stdstdio.U:
7732 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 "stdio_bufsiz"
7738 From d_stdstdio.U:
7739 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 "stdio_cnt"
7746 From d_stdstdio.U:
7747 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 "stdio_filbuf"
7753 From d_stdstdio.U:
7754 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 "stdio_ptr"
7760 From d_stdstdio.U:
7761 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 "stdio_stream_array"
7767 From stdio_streams.U:
7768 This variable tells the name of the array holding the stdio
7770 streams. Usual values include _iob, __iob, and __sF.
7771 "strerror_r_proto"
7773 From d_strerror_r.U:
7774 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 "submit"
7780 From Loc.U:
7781 This variable is defined but not used by Configure. The value is
7783 the empty string and is not useful.
7784 "subversion"
7786 From patchlevel.U:
7787 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 "sysman"
7794 From sysman.U:
7795 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 "sysroot"
7803 From Sysroot.U:
7804 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 t
7811 "tail"
7812 From Loc.U:
7813 This variable is defined but not used by Configure. The value is
7815 the empty string and is not useful.
7816 "taint_disabled"
7818 From define: "SILENT_NO_TAINT_SUPPORT" or "NO_TAINT_SUPPORT"
7819 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 "taint_support"
7829 From define: "SILENT_NO_TAINT_SUPPORT" or "NO_TAINT_SUPPORT"
7830 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 "tar"
7838 From Loc.U:
7839 This variable is defined but not used by Configure. The value is
7841 the empty string and is not useful.
7842 "targetarch"
7844 From Cross.U:
7845 If cross-compiling, this variable contains the target architecture.
7847 If not, this will be empty.
7848 "targetdir"
7850 From Cross.U:
7851 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 "targetenv"
7857 From Cross.U:
7858 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 "targethost"
7867 From Cross.U:
7868 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 "targetmkdir"
7874 From Cross.U:
7875 This variable contains the command used by Configure to create a
7877 new directory on the target host.
7878 "targetport"
7880 From Cross.U:
7881 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 "targetsh"
7886 From sh.U:
7887 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 "tbl"
7892 From Loc.U:
7893 This variable is defined but not used by Configure. The value is
7895 the empty string and is not useful.
7896 "tee"
7898 From Loc.U:
7899 This variable is defined but not used by Configure. The value is
7901 the empty string and is not useful.
7902 "test"
7904 From Loc.U:
7905 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 "timeincl"
7911 From i_time.U:
7912 This variable holds the full path of the included time header(s).
7914 "timetype"
7916 From d_time.U:
7917 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 "tmpnam_r_proto"
7923 From d_tmpnam_r.U:
7924 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 "to"
7930 From Cross.U:
7931 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 "touch"
7937 From Loc.U:
7938 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 "tr"
7944 From Loc.U:
7945 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 "trnl"
7951 From trnl.U:
7952 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 "troff"
7959 From Loc.U:
7960 This variable is defined but not used by Configure. The value is
7962 the empty string and is not useful.
7963 "ttyname_r_proto"
7965 From d_ttyname_r.U:
7966 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 u
7972 "u16size"
7973 From perlxv.U:
7974 This variable is the size of an U16 in bytes.
7976 "u16type"
7978 From perlxv.U:
7979 This variable contains the C type used for Perl's U16.
7981 "u32XUformat"
7983 From perlx32f.U:
7984 This variable contains the format string used for printing a Perl
7986 U32 as an unsigned hexadecimal integer in uppercase "ABCDEF".
7987 "u32oformat"
7989 From perlx32f.U:
7990 This variable contains the format string used for printing a Perl
7992 U32 as an unsigned octal integer.
7993 "u32size"
7995 From perlxv.U:
7996 This variable is the size of an U32 in bytes.
7998 "u32type"
8000 From perlxv.U:
8001 This variable contains the C type used for Perl's U32.
8003 "u32uformat"
8005 From perlx32f.U:
8006 This variable contains the format string used for printing a Perl
8008 U32 as an unsigned decimal integer.
8009 "u32xformat"
8011 From perlx32f.U:
8012 This variable contains the format string used for printing a Perl
8014 U32 as an unsigned hexadecimal integer in lowercase abcdef.
8015 "u64size"
8017 From perlxv.U:
8018 This variable is the size of an U64 in bytes.
8020 "u64type"
8022 From perlxv.U:
8023 This variable contains the C type used for Perl's U64.
8025 "u8size"
8027 From perlxv.U:
8028 This variable is the size of an U8 in bytes.
8030 "u8type"
8032 From perlxv.U:
8033 This variable contains the C type used for Perl's U8.
8035 "uidformat"
8037 From uidf.U:
8038 This variable contains the format string used for printing a Uid_t.
8040 "uidsign"
8042 From uidsign.U:
8043 This variable contains the signedness of a uidtype. 1 for
8045 unsigned, -1 for signed.
8046 "uidsize"
8048 From uidsize.U:
8049 This variable contains the size of a uidtype in bytes.
8051 "uidtype"
8053 From uidtype.U:
8054 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 "uname"
8059 From Loc.U:
8060 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 "uniq"
8066 From Loc.U:
8067 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 "uquadtype"
8073 From quadtype.U:
8074 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 "use64bitall"
8080 From use64bits.U:
8081 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 "use64bitint"
8091 From use64bits.U:
8092 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 "usecbacktrace"
8100 From usebacktrace.U:
8101 This variable indicates whether we are compiling with backtrace
8103 support.
8104 "usecrosscompile"
8106 From Cross.U:
8107 This variable conditionally defines the "USE_CROSS_COMPILE" symbol,
8109 and indicates that Perl has been cross-compiled.
8110 "usedefaultstrict"
8112 From usedefaultstrict.U:
8113 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 "usedevel"
8119 From Devel.U:
8120 This variable indicates that Perl was configured with development
8122 features enabled. This should not be done for production builds.
8123 "usedl"
8125 From dlsrc.U:
8126 This variable indicates if the system supports dynamic loading of
8128 some sort. See also dlsrc and dlobj.
8129 "usedtrace"
8131 From usedtrace.U:
8132 This variable indicates whether we are compiling with dtrace
8134 support. See also dtrace.
8135 "usefaststdio"
8137 From usefaststdio.U:
8138 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 "useithreads"
8144 From usethreads.U:
8145 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 "usekernprocpathname"
8151 From usekernprocpathname.U:
8152 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 "uselanginfo"
8158 From Extensions.U:
8159 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 "uselargefiles"
8166 From uselfs.U:
8167 This variable conditionally defines the "USE_LARGE_FILES" symbol,
8169 and indicates that large file interfaces should be used when
8170 available.
8171 "uselongdouble"
8173 From uselongdbl.U:
8174 This variable conditionally defines the "USE_LONG_DOUBLE" symbol,
8176 and indicates that long doubles should be used when available.
8177 "usemallocwrap"
8179 From mallocsrc.U:
8180 This variable contains y if we are wrapping malloc to prevent
8182 integer overflow during size calculations.
8183 "usemorebits"
8185 From usemorebits.U:
8186 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 "usemultiplicity"
8192 From usemultiplicity.U:
8193 This variable conditionally defines the "MULTIPLICITY" symbol, and
8195 indicates that Perl should be built to use multiplicity.
8196 "usemymalloc"
8198 From mallocsrc.U:
8199 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 "usenm"
8207 From usenm.U:
8208 This variable contains "true" or "false" depending whether the nm
8210 extraction is wanted or not.
8211 "usensgetexecutablepath"
8213 From usensgetexecutablepath.U:
8214 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 "useopcode"
8220 From Extensions.U:
8221 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 "useperlio"
8228 From useperlio.U:
8229 This variable conditionally defines the "USE_PERLIO" symbol, and
8231 indicates that the PerlIO abstraction should be used throughout.
8232 "useposix"
8234 From Extensions.U:
8235 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 "usequadmath"
8242 From usequadmath.U:
8243 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 "usereentrant"
8249 From usethreads.U:
8250 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 "userelocatableinc"
8258 From bin.U:
8259 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 "useshrplib"
8267 From libperl.U:
8268 This variable is set to "true" if the user wishes to build a shared
8270 libperl, and "false" otherwise.
8271 "usesitecustomize"
8273 From d_sitecustomize.U:
8274 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 "usesocks"
8281 From usesocks.U:
8282 This variable conditionally defines the "USE_SOCKS" symbol, and
8284 indicates that Perl should be built to use "SOCKS".
8285 "usethreads"
8287 From usethreads.U:
8288 This variable conditionally defines the "USE_THREADS" symbol, and
8290 indicates that Perl should be built to use threads.
8291 "usevendorprefix"
8293 From vendorprefix.U:
8294 This variable tells whether the vendorprefix and consequently other
8296 vendor* paths are in use.
8297 "useversionedarchname"
8299 From archname.U:
8300 This variable indicates whether to include the $api_versionstring
8302 as a component of the $archname.
8303 "usevfork"
8305 From d_vfork.U:
8306 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 "usrinc"
8312 From usrinc.U:
8313 This variable holds the path of the include files, which is usually
8315 /usr/include. It is mainly used by other Configure units.
8316 "uuname"
8318 From Loc.U:
8319 This variable is defined but not used by Configure. The value is
8321 the empty string and is not useful.
8322 "uvXUformat"
8324 From perlxvf.U:
8325 This variable contains the format string used for printing a Perl
8327 "UV" as an unsigned hexadecimal integer in uppercase "ABCDEF".
8328 "uvoformat"
8330 From perlxvf.U:
8331 This variable contains the format string used for printing a Perl
8333 "UV" as an unsigned octal integer.
8334 "uvsize"
8336 From perlxv.U:
8337 This variable is the size of a "UV" in bytes.
8339 "uvtype"
8341 From perlxv.U:
8342 This variable contains the C type used for Perl's "UV".
8344 "uvuformat"
8346 From perlxvf.U:
8347 This variable contains the format string used for printing a Perl
8349 "UV" as an unsigned decimal integer.
8350 "uvxformat"
8352 From perlxvf.U:
8353 This variable contains the format string used for printing a Perl
8355 "UV" as an unsigned hexadecimal integer in lowercase abcdef.
8356 v
8358 "vendorarch"
8359 From vendorarch.U:
8360 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 "vendorarchexp"
8369 From vendorarch.U:
8370 This variable is the ~name expanded version of vendorarch, so that
8372 you may use it directly in Makefiles or shell scripts.
8373 "vendorbin"
8375 From vendorbin.U:
8376 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 "vendorbinexp"
8385 From vendorbin.U:
8386 This variable is the ~name expanded version of vendorbin, so that
8388 you may use it directly in Makefiles or shell scripts.
8389 "vendorhtml1dir"
8391 From vendorhtml1dir.U:
8392 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 "vendorhtml1direxp"
8401 From vendorhtml1dir.U:
8402 This variable is the ~name expanded version of vendorhtml1dir, so
8404 that you may use it directly in Makefiles or shell scripts.
8405 "vendorhtml3dir"
8407 From vendorhtml3dir.U:
8408 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 "vendorhtml3direxp"
8417 From vendorhtml3dir.U:
8418 This variable is the ~name expanded version of vendorhtml3dir, so
8420 that you may use it directly in Makefiles or shell scripts.
8421 "vendorlib"
8423 From vendorlib.U:
8424 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 "vendorlib_stem"
8433 From vendorlib.U:
8434 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 "vendorlibexp"
8441 From vendorlib.U:
8442 This variable is the ~name expanded version of vendorlib, so that
8444 you may use it directly in Makefiles or shell scripts.
8445 "vendorman1dir"
8447 From vendorman1dir.U:
8448 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 "vendorman1direxp"
8457 From vendorman1dir.U:
8458 This variable is the ~name expanded version of vendorman1dir, so
8460 that you may use it directly in Makefiles or shell scripts.
8461 "vendorman3dir"
8463 From vendorman3dir.U:
8464 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 "vendorman3direxp"
8473 From vendorman3dir.U:
8474 This variable is the ~name expanded version of vendorman3dir, so
8476 that you may use it directly in Makefiles or shell scripts.
8477 "vendorprefix"
8479 From vendorprefix.U:
8480 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 "vendorprefixexp"
8486 From vendorprefix.U:
8487 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 "vendorscript"
8493 From vendorscript.U:
8494 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 "vendorscriptexp"
8503 From vendorscript.U:
8504 This variable is the ~name expanded version of vendorscript, so
8506 that you may use it directly in Makefiles or shell scripts.
8507 "version"
8509 From patchlevel.U:
8510 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 "version_patchlevel_string"
8518 From patchlevel.U:
8519 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 "versiononly"
8527 From versiononly.U:
8528 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 "vi"
8539 From Loc.U:
8540 This variable is defined but not used by Configure. The value is
8542 the empty string and is not useful.
8543 x
8545 "xlibpth"
8546 From libpth.U:
8547 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 "xlocale_needed"
8553 From d_newlocale.U:
8554 This symbol, if defined, indicates that the C program should
8556 include <xlocale.h> to get newlocale() and its friends.
8557 y
8559 "yacc"
8560 From yacc.U:
8561 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 "yaccflags"
8566 From yacc.U:
8567 This variable contains any additional yacc flags desired by the
8569 user. It is up to the Makefile to use this.
8570 z
8572 "zcat"
8573 From Loc.U:
8574 This variable is defined but not used by Configure. The value is
8576 the empty string and is not useful.
8577 "zip"
8579 From Loc.U:
8580 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 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 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.
8603perl v5.38.2 2023-11-30 Config(3pm)