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 $regex.
50 config_vars(@names)
52 Prints to STDOUT the values of the named configuration variable.
53 Each is printed on a separate line in the form:
54 name='value';
56 Names which are unknown are output as "name='UNKNOWN';". See also
58 "-V:name" in "Command Switches" in perlrun.
59 bincompat_options()
61 Returns a list of C pre-processor options used when compiling this
62 perl binary, which affect its binary compatibility with extensions.
63 "bincompat_options()" and "non_bincompat_options()" are shown
64 together in the output of "perl -V" as Compile-time options.
65 non_bincompat_options()
67 Returns a list of C pre-processor options used when compiling this
68 perl binary, which do not affect binary compatibility with
69 extensions.
70 compile_date()
72 Returns the compile date (as a string), equivalent to what is shown
73 by "perl -V"
74 local_patches()
76 Returns a list of the names of locally applied patches, equivalent
77 to what is shown by "perl -V".
78 header_files()
80 Returns a list of the header files that should be used as
81 dependencies for XS code, for this version of Perl on this
82 platform.
83
85 Here's a more sophisticated example of using %Config:
86 use Config;
88 use strict;
89 my %sig_num;
91 my @sig_name;
92 unless($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 _
134 "_a"
135 From Unix.U:
136 This variable defines the extension used for ordinary library
138 files. For unix, it is .a. The . is included. Other possible
139 values include .lib.
140 "_exe"
142 From Unix.U:
143 This variable defines the extension used for executable files.
145 "DJGPP", Cygwin and OS/2 use .exe. Stratus "VOS" uses .pm. On
146 operating systems which do not require a specific extension for
147 executable files, this variable is empty.
148 "_o"
150 From Unix.U:
151 This variable defines the extension used for object files. For
153 unix, it is .o. The . is included. Other possible values include
154 .obj.
155 a
157 "afs"
158 From afs.U:
159 This variable is set to "true" if "AFS" (Andrew File System) is
161 used on the system, "false" otherwise. It is possible to override
162 this with a hint value or command line option, but you'd better
163 know what you are doing.
164 "afsroot"
166 From afs.U:
167 This variable is by default set to /afs. In the unlikely case this
169 is not the correct root, it is possible to override this with a
170 hint value or command line option. This will be used in subsequent
171 tests for AFSness in the configure and test process.
172 "alignbytes"
174 From alignbytes.U:
175 This variable holds the number of bytes required to align a
177 double-- or a long double when applicable. Usual values are 2, 4
178 and 8. The default is eight, for safety.
179 "aphostname"
181 From d_gethname.U:
182 This variable contains the command which can be used to compute the
184 host name. The command is fully qualified by its absolute path, to
185 make it safe when used by a process with super-user privileges.
186 "api_revision"
188 From patchlevel.U:
189 The three variables, api_revision, api_version, and api_subversion,
191 specify the version of the oldest perl binary compatible with the
192 present perl. In a full version string such as 5.6.1, api_revision
193 is the 5. Prior to 5.5.640, the format was a floating point
194 number, like 5.00563.
195 perl.c:incpush() and lib/lib.pm will automatically search in
197 $sitelib/.. for older directories back to the limit specified by
198 these api_ variables. This is only useful if you have a perl
199 library directory tree structured like the default one. See
200 "INSTALL" for how this works. The versioned site_perl directory
201 was introduced in 5.005, so that is the lowest possible value. The
202 version list appropriate for the current system is determined in
203 inc_version_list.U.
204 "XXX" To do: Since compatibility can depend on compile time
206 options (such as bincompat, longlong, etc.) it should (perhaps) be
207 set by Configure, but currently it isn't. Currently, we read a
208 hard-wired value from patchlevel.h. Perhaps what we ought to do is
209 take the hard-wired value from patchlevel.h but then modify it if
210 the current Configure options warrant. patchlevel.h then would use
211 an #ifdef guard.
212 "api_subversion"
214 From patchlevel.U:
215 The three variables, api_revision, api_version, and api_subversion,
217 specify the version of the oldest perl binary compatible with the
218 present perl. In a full version string such as 5.6.1,
219 api_subversion is the 1. See api_revision for full details.
220 "api_version"
222 From patchlevel.U:
223 The three variables, api_revision, api_version, and api_subversion,
225 specify the version of the oldest perl binary compatible with the
226 present perl. In a full version string such as 5.6.1, api_version
227 is the 6. See api_revision for full details. As a special case,
228 5.5.0 is rendered in the old-style as 5.005. (In the 5.005_0x
229 maintenance series, this was the only versioned directory in
230 $sitelib.)
231 "api_versionstring"
233 From patchlevel.U:
234 This variable combines api_revision, api_version, and
236 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable for
237 use as a directory name. This is filesystem dependent.
238 "ar"
240 From Loc.U:
241 This variable is used internally by Configure to determine the full
243 pathname (if any) of the ar program. After Configure runs, the
244 value is reset to a plain "ar" and is not useful.
245 "archlib"
247 From archlib.U:
248 This variable holds the name of the directory in which the user
250 wants to put architecture-dependent public library files for
251 $package. It is most often a local directory such as
252 /usr/local/lib. Programs using this variable must be prepared to
253 deal with filename expansion.
254 "archlibexp"
256 From archlib.U:
257 This variable is the same as the archlib variable, but is filename
259 expanded at configuration time, for convenient use.
260 "archname"
262 From archname.U:
263 This variable is a short name to characterize the current
265 architecture. It is used mainly to construct the default archlib.
266 "archname64"
268 From use64bits.U:
269 This variable is used for the 64-bitness part of $archname.
271 "archobjs"
273 From Unix.U:
274 This variable defines any additional objects that must be linked in
276 with the program on this architecture. On unix, it is usually
277 empty. It is typically used to include emulations of unix calls or
278 other facilities. For perl on OS/2, for example, this would
279 include os2/os2.obj.
280 "asctime_r_proto"
282 From d_asctime_r.U:
283 This variable encodes the prototype of asctime_r. It is zero if
285 d_asctime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
286 of reentr.h if d_asctime_r is defined.
287 "awk"
289 From Loc.U:
290 This variable is used internally by Configure to determine the full
292 pathname (if any) of the awk program. After Configure runs, the
293 value is reset to a plain "awk" and is not useful.
294 b
296 "baserev"
297 From baserev.U:
298 The base revision level of this package, from the .package file.
300 "bash"
302 From Loc.U:
303 This variable is defined but not used by Configure. The value is
305 the empty string and is not useful.
306 "bin"
308 From bin.U:
309 This variable holds the name of the directory in which the user
311 wants to put publicly executable images for the package in
312 question. It is most often a local directory such as
313 /usr/local/bin. Programs using this variable must be prepared to
314 deal with ~name substitution.
315 "bin_ELF"
317 From dlsrc.U:
318 This variable saves the result from configure if generated binaries
320 are in "ELF" format. Only set to defined when the test has actually
321 been performed, and the result was positive.
322 "binexp"
324 From bin.U:
325 This is the same as the bin variable, but is filename expanded at
327 configuration time, for use in your makefiles.
328 "bison"
330 From Loc.U:
331 This variable is used internally by Configure to determine the full
333 pathname (if any) of the bison program. After Configure runs, the
334 value is reset to a plain "bison" and is not useful.
335 "byacc"
337 From Loc.U:
338 This variable is used internally by Configure to determine the full
340 pathname (if any) of the byacc program. After Configure runs, the
341 value is reset to a plain "byacc" and is not useful.
342 "byteorder"
344 From byteorder.U:
345 This variable holds the byte order in a "UV". In the following,
347 larger digits indicate more significance. The variable byteorder
348 is either 4321 on a big-endian machine, or 1234 on a little-endian,
349 or 87654321 on a Cray ... or 3412 with weird order !
350 c
352 "c" From n.U:
353 This variable contains the \c string if that is what causes the
355 echo command to suppress newline. Otherwise it is null. Correct
356 usage is $echo $n "prompt for a question: $c".
357 "castflags"
359 From d_castneg.U:
360 This variable contains a flag that precise difficulties the
362 compiler has casting odd floating values to unsigned long: 0 = ok 1
363 = couldn't cast < 0 2 = couldn't cast >= 0x80000000 4 = couldn't
364 cast in argument expression list
365 "cat"
367 From Loc.U:
368 This variable is used internally by Configure to determine the full
370 pathname (if any) of the cat program. After Configure runs, the
371 value is reset to a plain "cat" and is not useful.
372 "cc"
374 From cc.U:
375 This variable holds the name of a command to execute a C compiler
377 which can resolve multiple global references that happen to have
378 the same name. Usual values are "cc" and "gcc". Fervent "ANSI"
379 compilers may be called "c89". "AIX" has xlc.
380 "cccdlflags"
382 From dlsrc.U:
383 This variable contains any special flags that might need to be
385 passed with "cc -c" to compile modules to be used to create a
386 shared library that will be used for dynamic loading. For hpux,
387 this should be +z. It is up to the makefile to use it.
388 "ccdlflags"
390 From dlsrc.U:
391 This variable contains any special flags that might need to be
393 passed to cc to link with a shared library for dynamic loading. It
394 is up to the makefile to use it. For sunos 4.1, it should be
395 empty.
396 "ccflags"
398 From ccflags.U:
399 This variable contains any additional C compiler flags desired by
401 the user. It is up to the Makefile to use this.
402 "ccflags_uselargefiles"
404 From uselfs.U:
405 This variable contains the compiler flags needed by large file
407 builds and added to ccflags by hints files.
408 "ccname"
410 From Checkcc.U:
411 This can set either by hints files or by Configure. If using gcc,
413 this is gcc, and if not, usually equal to cc, unimpressive, no?
414 Some platforms, however, make good use of this by storing the
415 flavor of the C compiler being used here. For example if using the
416 Sun WorkShop suite, ccname will be "workshop".
417 "ccsymbols"
419 From Cppsym.U:
420 The variable contains the symbols defined by the C compiler alone.
422 The symbols defined by cpp or by cc when it calls cpp are not in
423 this list, see cppsymbols and cppccsymbols. The list is a space-
424 separated list of symbol=value tokens.
425 "ccversion"
427 From Checkcc.U:
428 This can set either by hints files or by Configure. If using a
430 (non-gcc) vendor cc, this variable may contain a version for the
431 compiler.
432 "cf_by"
434 From cf_who.U:
435 Login name of the person who ran the Configure script and answered
437 the questions. This is used to tag both config.sh and config_h.SH.
438 "cf_email"
440 From cf_email.U:
441 Electronic mail address of the person who ran Configure. This can
443 be used by units that require the user's e-mail, like MailList.U.
444 "cf_time"
446 From cf_who.U:
447 Holds the output of the "date" command when the configuration file
449 was produced. This is used to tag both config.sh and config_h.SH.
450 "charbits"
452 From charsize.U:
453 This variable contains the value of the "CHARBITS" symbol, which
455 indicates to the C program how many bits there are in a character.
456 "charsize"
458 From charsize.U:
459 This variable contains the value of the "CHARSIZE" symbol, which
461 indicates to the C program how many bytes there are in a character.
462 "chgrp"
464 From Loc.U:
465 This variable is defined but not used by Configure. The value is
467 the empty string and is not useful.
468 "chmod"
470 From Loc.U:
471 This variable is used internally by Configure to determine the full
473 pathname (if any) of the chmod program. After Configure runs, the
474 value is reset to a plain "chmod" and is not useful.
475 "chown"
477 From Loc.U:
478 This variable is defined but not used by Configure. The value is
480 the empty string and is not useful.
481 "clocktype"
483 From d_times.U:
484 This variable holds the type returned by times(). It can be long,
486 or clock_t on "BSD" sites (in which case <sys/types.h> should be
487 included).
488 "comm"
490 From Loc.U:
491 This variable is used internally by Configure to determine the full
493 pathname (if any) of the comm program. After Configure runs, the
494 value is reset to a plain "comm" and is not useful.
495 "compiler_warning"
497 From compiler_warning.U:
498 This variable holds the command to check if the file specified as a
500 parameter contains a compiler warning
501 "compress"
503 From Loc.U:
504 This variable is defined but not used by Configure. The value is
506 the empty string and is not useful.
507 "config_arg0"
509 From Options.U:
510 This variable contains the string used to invoke the Configure
512 command, as reported by the shell in the $0 variable.
513 "config_argc"
515 From Options.U:
516 This variable contains the number of command-line arguments passed
518 to Configure, as reported by the shell in the $# variable. The
519 individual arguments are stored as variables config_arg1,
520 config_arg2, etc.
521 "config_args"
523 From Options.U:
524 This variable contains a single string giving the command-line
526 arguments passed to Configure. Spaces within arguments, quotes, and
527 escaped characters are not correctly preserved. To reconstruct the
528 command line, you must assemble the individual command line pieces,
529 given in config_arg[0-9]*.
530 "contains"
532 From contains.U:
533 This variable holds the command to do a grep with a proper return
535 status. On most sane systems it is simply "grep". On insane
536 systems it is a grep followed by a cat followed by a test. This
537 variable is primarily for the use of other Configure units.
538 "cp"
540 From Loc.U:
541 This variable is used internally by Configure to determine the full
543 pathname (if any) of the cp program. After Configure runs, the
544 value is reset to a plain "cp" and is not useful.
545 "cpio"
547 From Loc.U:
548 This variable is defined but not used by Configure. The value is
550 the empty string and is not useful.
551 "cpp"
553 From Loc.U:
554 This variable is used internally by Configure to determine the full
556 pathname (if any) of the cpp program. After Configure runs, the
557 value is reset to a plain "cpp" and is not useful.
558 "cpp_stuff"
560 From cpp_stuff.U:
561 This variable contains an identification of the concatenation
563 mechanism used by the C preprocessor.
564 "cppccsymbols"
566 From Cppsym.U:
567 The variable contains the symbols defined by the C compiler when it
569 calls cpp. The symbols defined by the cc alone or cpp alone are
570 not in this list, see ccsymbols and cppsymbols. The list is a
571 space-separated list of symbol=value tokens.
572 "cppflags"
574 From ccflags.U:
575 This variable holds the flags that will be passed to the C pre-
577 processor. It is up to the Makefile to use it.
578 "cpplast"
580 From cppstdin.U:
581 This variable has the same functionality as cppminus, only it
583 applies to cpprun and not cppstdin.
584 "cppminus"
586 From cppstdin.U:
587 This variable contains the second part of the string which will
589 invoke the C preprocessor on the standard input and produce to
590 standard output. This variable will have the value "-" if cppstdin
591 needs a minus to specify standard input, otherwise the value is "".
592 "cpprun"
594 From cppstdin.U:
595 This variable contains the command which will invoke a C
597 preprocessor on standard input and put the output to stdout. It is
598 guaranteed not to be a wrapper and may be a null string if no
599 preprocessor can be made directly available. This preprocessor
600 might be different from the one used by the C compiler. Don't
601 forget to append cpplast after the preprocessor options.
602 "cppstdin"
604 From cppstdin.U:
605 This variable contains the command which will invoke the C
607 preprocessor on standard input and put the output to stdout. It is
608 primarily used by other Configure units that ask about preprocessor
609 symbols.
610 "cppsymbols"
612 From Cppsym.U:
613 The variable contains the symbols defined by the C preprocessor
615 alone. The symbols defined by cc or by cc when it calls cpp are
616 not in this list, see ccsymbols and cppccsymbols. The list is a
617 space-separated list of symbol=value tokens.
618 "crypt_r_proto"
620 From d_crypt_r.U:
621 This variable encodes the prototype of crypt_r. It is zero if
623 d_crypt_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
624 of reentr.h if d_crypt_r is defined.
625 "cryptlib"
627 From d_crypt.U:
628 This variable holds -lcrypt or the path to a libcrypt.a archive if
630 the crypt() function is not defined in the standard C library. It
631 is up to the Makefile to use this.
632 "csh"
634 From Loc.U:
635 This variable is used internally by Configure to determine the full
637 pathname (if any) of the csh program. After Configure runs, the
638 value is reset to a plain "csh" and is not useful.
639 "ctermid_r_proto"
641 From d_ctermid_r.U:
642 This variable encodes the prototype of ctermid_r. It is zero if
644 d_ctermid_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
645 of reentr.h if d_ctermid_r is defined.
646 "ctime_r_proto"
648 From d_ctime_r.U:
649 This variable encodes the prototype of ctime_r. It is zero if
651 d_ctime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
652 of reentr.h if d_ctime_r is defined.
653 d
655 "d__fwalk"
656 From d__fwalk.U:
657 This variable conditionally defines "HAS__FWALK" if _fwalk() is
659 available to apply a function to all the file handles.
660 "d_accept4"
662 From d_accept4.U:
663 This variable conditionally defines HAS_ACCEPT4 if accept4() is
665 available to accept socket connections.
666 "d_access"
668 From d_access.U:
669 This variable conditionally defines "HAS_ACCESS" if the access()
671 system call is available to check for access permissions using real
672 IDs.
673 "d_accessx"
675 From d_accessx.U:
676 This variable conditionally defines the "HAS_ACCESSX" symbol, which
678 indicates to the C program that the accessx() routine is available.
679 "d_acosh"
681 From d_acosh.U:
682 This variable conditionally defines the "HAS_ACOSH" symbol, which
684 indicates to the C program that the acosh() routine is available.
685 "d_aintl"
687 From d_aintl.U:
688 This variable conditionally defines the "HAS_AINTL" symbol, which
690 indicates to the C program that the aintl() routine is available.
691 If copysignl is also present we can emulate modfl.
692 "d_alarm"
694 From d_alarm.U:
695 This variable conditionally defines the "HAS_ALARM" symbol, which
697 indicates to the C program that the alarm() routine is available.
698 "d_archlib"
700 From archlib.U:
701 This variable conditionally defines "ARCHLIB" to hold the pathname
703 of architecture-dependent library files for $package. If $archlib
704 is the same as $privlib, then this is set to undef.
705 "d_asctime64"
707 From d_timefuncs64.U:
708 This variable conditionally defines the HAS_ASCTIME64 symbol, which
710 indicates to the C program that the asctime64 () routine is
711 available.
712 "d_asctime_r"
714 From d_asctime_r.U:
715 This variable conditionally defines the "HAS_ASCTIME_R" symbol,
717 which indicates to the C program that the asctime_r() routine is
718 available.
719 "d_asinh"
721 From d_asinh.U:
722 This variable conditionally defines the "HAS_ASINH" symbol, which
724 indicates to the C program that the asinh() routine is available.
725 "d_atanh"
727 From d_atanh.U:
728 This variable conditionally defines the "HAS_ATANH" symbol, which
730 indicates to the C program that the atanh() routine is available.
731 "d_atolf"
733 From atolf.U:
734 This variable conditionally defines the "HAS_ATOLF" symbol, which
736 indicates to the C program that the atolf() routine is available.
737 "d_atoll"
739 From atoll.U:
740 This variable conditionally defines the "HAS_ATOLL" symbol, which
742 indicates to the C program that the atoll() routine is available.
743 "d_attribute_always_inline"
745 From d_attribut.U:
746 This variable conditionally defines "HASATTRIBUTE_ALWAYS_INLINE",
748 which indicates that the C compiler can know that certain functions
749 should always be inlined.
750 "d_attribute_deprecated"
752 From d_attribut.U:
753 This variable conditionally defines "HASATTRIBUTE_DEPRECATED",
755 which indicates that "GCC" can handle the attribute for marking
756 deprecated APIs
757 "d_attribute_format"
759 From d_attribut.U:
760 This variable conditionally defines "HASATTRIBUTE_FORMAT", which
762 indicates the C compiler can check for printf-like formats.
763 "d_attribute_malloc"
765 From d_attribut.U:
766 This variable conditionally defines "HASATTRIBUTE_MALLOC", which
768 indicates the C compiler can understand functions as having malloc-
769 like semantics.
770 "d_attribute_nonnull"
772 From d_attribut.U:
773 This variable conditionally defines "HASATTRIBUTE_NONNULL", which
775 indicates that the C compiler can know that certain arguments must
776 not be "NULL", and will check accordingly at compile time.
777 "d_attribute_noreturn"
779 From d_attribut.U:
780 This variable conditionally defines "HASATTRIBUTE_NORETURN", which
782 indicates that the C compiler can know that certain functions are
783 guaranteed never to return.
784 "d_attribute_pure"
786 From d_attribut.U:
787 This variable conditionally defines "HASATTRIBUTE_PURE", which
789 indicates that the C compiler can know that certain functions are
790 "pure" functions, meaning that they have no side effects, and only
791 rely on function input and/or global data for their results.
792 "d_attribute_unused"
794 From d_attribut.U:
795 This variable conditionally defines "HASATTRIBUTE_UNUSED", which
797 indicates that the C compiler can know that certain variables and
798 arguments may not always be used, and to not throw warnings if they
799 don't get used.
800 "d_attribute_warn_unused_result"
802 From d_attribut.U:
803 This variable conditionally defines
805 "HASATTRIBUTE_WARN_UNUSED_RESULT", which indicates that the C
806 compiler can know that certain functions have a return values that
807 must not be ignored, such as malloc() or open().
808 "d_backtrace"
810 From d_backtrace.U:
811 This variable conditionally defines the "HAS_BACKTRACE" symbol,
813 which indicates to the C program that the backtrace() routine is
814 available to get a stack trace.
815 "d_bsd"
817 From Guess.U:
818 This symbol conditionally defines the symbol "BSD" when running on
820 a "BSD" system.
821 "d_bsdgetpgrp"
823 From d_getpgrp.U:
824 This variable conditionally defines "USE_BSD_GETPGRP" if getpgrp
826 needs one arguments whereas "USG" one needs none.
827 "d_bsdsetpgrp"
829 From d_setpgrp.U:
830 This variable conditionally defines "USE_BSD_SETPGRP" if setpgrp
832 needs two arguments whereas "USG" one needs none. See also
833 d_setpgid for a "POSIX" interface.
834 "d_builtin_add_overflow"
836 From d_builtin_overflow.U:
837 This variable conditionally defines "HAS_BUILTIN_ADD_OVERFLOW",
839 which indicates that the compiler supports
840 __builtin_add_overflow(x,y,&z) for safely adding x and y into z
841 while checking for overflow.
842 "d_builtin_choose_expr"
844 From d_builtin.U:
845 This conditionally defines "HAS_BUILTIN_CHOOSE_EXPR", which
847 indicates that the compiler supports __builtin_choose_expr(x,y,z).
848 This built-in function is analogous to the "x?y:z" operator in C,
849 except that the expression returned has its type unaltered by
850 promotion rules. Also, the built-in function does not evaluate the
851 expression that was not chosen.
852 "d_builtin_expect"
854 From d_builtin.U:
855 This conditionally defines "HAS_BUILTIN_EXPECT", which indicates
857 that the compiler supports __builtin_expect(exp,c). You may use
858 __builtin_expect to provide the compiler with branch prediction
859 information.
860 "d_builtin_mul_overflow"
862 From d_builtin_overflow.U:
863 This variable conditionally defines "HAS_BUILTIN_MUL_OVERFLOW",
865 which indicates that the compiler supports
866 __builtin_mul_overflow(x,y,&z) for safely multiplying x and y into
867 z while checking for overflow.
868 "d_builtin_sub_overflow"
870 From d_builtin_overflow.U:
871 This variable conditionally defines "HAS_BUILTIN_SUB_OVERFLOW",
873 which indicates that the compiler supports
874 __builtin_sub_overflow(x,y,&z) for safely subtracting y from x into
875 z while checking for overflow.
876 "d_c99_variadic_macros"
878 From d_c99_variadic.U:
879 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
881 symbol, which indicates to the C program that C99 variadic macros
882 are available.
883 "d_casti32"
885 From d_casti32.U:
886 This variable conditionally defines CASTI32, which indicates
888 whether the C compiler can cast large floats to 32-bit ints.
889 "d_castneg"
891 From d_castneg.U:
892 This variable conditionally defines "CASTNEG", which indicates
894 whether the C compiler can cast negative float to unsigned.
895 "d_cbrt"
897 From d_cbrt.U:
898 This variable conditionally defines the "HAS_CBRT" symbol, which
900 indicates to the C program that the cbrt() (cube root) function is
901 available.
902 "d_chown"
904 From d_chown.U:
905 This variable conditionally defines the "HAS_CHOWN" symbol, which
907 indicates to the C program that the chown() routine is available.
908 "d_chroot"
910 From d_chroot.U:
911 This variable conditionally defines the "HAS_CHROOT" symbol, which
913 indicates to the C program that the chroot() routine is available.
914 "d_chsize"
916 From d_chsize.U:
917 This variable conditionally defines the "CHSIZE" symbol, which
919 indicates to the C program that the chsize() routine is available
920 to truncate files. You might need a -lx to get this routine.
921 "d_class"
923 From d_class.U:
924 This variable conditionally defines the "HAS_CLASS" symbol, which
926 indicates to the C program that the class() routine is available.
927 "d_clearenv"
929 From d_clearenv.U:
930 This variable conditionally defines the "HAS_CLEARENV" symbol,
932 which indicates to the C program that the clearenv () routine is
933 available.
934 "d_closedir"
936 From d_closedir.U:
937 This variable conditionally defines "HAS_CLOSEDIR" if closedir() is
939 available.
940 "d_cmsghdr_s"
942 From d_cmsghdr_s.U:
943 This variable conditionally defines the "HAS_STRUCT_CMSGHDR"
945 symbol, which indicates that the struct cmsghdr is supported.
946 "d_copysign"
948 From d_copysign.U:
949 This variable conditionally defines the "HAS_COPYSIGN" symbol,
951 which indicates to the C program that the copysign() routine is
952 available.
953 "d_copysignl"
955 From d_copysignl.U:
956 This variable conditionally defines the "HAS_COPYSIGNL" symbol,
958 which indicates to the C program that the copysignl() routine is
959 available. If aintl is also present we can emulate modfl.
960 "d_cplusplus"
962 From d_cplusplus.U:
963 This variable conditionally defines the "USE_CPLUSPLUS" symbol,
965 which indicates that a C++ compiler was used to compiled Perl and
966 will be used to compile extensions.
967 "d_crypt"
969 From d_crypt.U:
970 This variable conditionally defines the "CRYPT" symbol, which
972 indicates to the C program that the crypt() routine is available to
973 encrypt passwords and the like.
974 "d_crypt_r"
976 From d_crypt_r.U:
977 This variable conditionally defines the "HAS_CRYPT_R" symbol, which
979 indicates to the C program that the crypt_r() routine is available.
980 "d_csh"
982 From d_csh.U:
983 This variable conditionally defines the "CSH" symbol, which
985 indicates to the C program that the C-shell exists.
986 "d_ctermid"
988 From d_ctermid.U:
989 This variable conditionally defines "CTERMID" if ctermid() is
991 available to generate filename for terminal.
992 "d_ctermid_r"
994 From d_ctermid_r.U:
995 This variable conditionally defines the "HAS_CTERMID_R" symbol,
997 which indicates to the C program that the ctermid_r() routine is
998 available.
999 "d_ctime64"
1001 From d_timefuncs64.U:
1002 This variable conditionally defines the HAS_CTIME64 symbol, which
1004 indicates to the C program that the ctime64 () routine is
1005 available.
1006 "d_ctime_r"
1008 From d_ctime_r.U:
1009 This variable conditionally defines the "HAS_CTIME_R" symbol, which
1011 indicates to the C program that the ctime_r() routine is available.
1012 "d_cuserid"
1014 From d_cuserid.U:
1015 This variable conditionally defines the "HAS_CUSERID" symbol, which
1017 indicates to the C program that the cuserid() routine is available
1018 to get character login names.
1019 "d_dbminitproto"
1021 From d_dbminitproto.U:
1022 This variable conditionally defines the "HAS_DBMINIT_PROTO" symbol,
1024 which indicates to the C program that the system provides a
1025 prototype for the dbminit() function. Otherwise, it is up to the
1026 program to supply one.
1027 "d_difftime"
1029 From d_difftime.U:
1030 This variable conditionally defines the "HAS_DIFFTIME" symbol,
1032 which indicates to the C program that the difftime() routine is
1033 available.
1034 "d_difftime64"
1036 From d_timefuncs64.U:
1037 This variable conditionally defines the HAS_DIFFTIME64 symbol,
1039 which indicates to the C program that the difftime64 () routine is
1040 available.
1041 "d_dir_dd_fd"
1043 From d_dir_dd_fd.U:
1044 This variable conditionally defines the "HAS_DIR_DD_FD" symbol,
1046 which indicates that the "DIR" directory stream type contains a
1047 member variable called dd_fd.
1048 "d_dirfd"
1050 From d_dirfd.U:
1051 This variable conditionally defines the "HAS_DIRFD" constant, which
1053 indicates to the C program that dirfd() is available to return the
1054 file descriptor of a directory stream.
1055 "d_dirnamlen"
1057 From i_dirent.U:
1058 This variable conditionally defines "DIRNAMLEN", which indicates to
1060 the C program that the length of directory entry names is provided
1061 by a d_namelen field.
1062 "d_dladdr"
1064 From d_dladdr.U:
1065 This variable conditionally defines the "HAS_DLADDR" symbol, which
1067 indicates to the C program that the dladdr() routine is available
1068 to get a stack trace.
1069 "d_dlerror"
1071 From d_dlerror.U:
1072 This variable conditionally defines the "HAS_DLERROR" symbol, which
1074 indicates to the C program that the dlerror() routine is available.
1075 "d_dlopen"
1077 From d_dlopen.U:
1078 This variable conditionally defines the "HAS_DLOPEN" symbol, which
1080 indicates to the C program that the dlopen() routine is available.
1081 "d_dlsymun"
1083 From d_dlsymun.U:
1084 This variable conditionally defines "DLSYM_NEEDS_UNDERSCORE", which
1086 indicates that we need to prepend an underscore to the symbol name
1087 before calling dlsym().
1088 "d_dosuid"
1090 From d_dosuid.U:
1091 This variable conditionally defines the symbol "DOSUID", which
1093 tells the C program that it should insert setuid emulation code on
1094 hosts which have setuid #! scripts disabled.
1095 "d_double_has_inf"
1097 From longdblfio.U:
1098 This variable conditionally defines the symbol "DOUBLE_HAS_INF"
1100 which indicates that the double type has an infinity.
1101 "d_double_has_nan"
1103 From longdblfio.U:
1104 This variable conditionally defines the symbol "DOUBLE_HAS_NAN"
1106 which indicates that the double type has a not-a-number.
1107 "d_double_has_negative_zero"
1109 From longdblfio.U:
1110 This variable conditionally defines the symbol
1112 "DOUBLE_HAS_NEGATIVE_ZERO" which indicates that the double type has
1113 a negative zero.
1114 "d_double_has_subnormals"
1116 From longdblfio.U:
1117 This variable conditionally defines the symbol
1119 "DOUBLE_HAS_SUBNORMALS" which indicates that the double type has
1120 subnormals (denormals).
1121 "d_double_style_cray"
1123 From longdblfio.U:
1124 This variable conditionally defines the symbol "DOUBLE_STYLE_CRAY"
1126 which indicates that the double is the 64-bit "CRAY" mainframe
1127 format.
1128 "d_double_style_ibm"
1130 From longdblfio.U:
1131 This variable conditionally defines the symbol "DOUBLE_STYLE_IBM",
1133 which indicates that the double is the 64-bit "IBM" mainframe
1134 format.
1135 "d_double_style_ieee"
1137 From longdblfio.U:
1138 This variable conditionally defines the symbol "DOUBLE_STYLE_IEEE",
1140 which indicates that the double is the 64-bit "IEEE" 754.
1141 "d_double_style_vax"
1143 From longdblfio.U:
1144 This variable conditionally defines the symbol "DOUBLE_STYLE_VAX",
1146 which indicates that the double is the 64-bit "VAX" format D or G.
1147 "d_drand48_r"
1149 From d_drand48_r.U:
1150 This variable conditionally defines the HAS_DRAND48_R symbol, which
1152 indicates to the C program that the drand48_r() routine is
1153 available.
1154 "d_drand48proto"
1156 From d_drand48proto.U:
1157 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
1159 which indicates to the C program that the system provides a
1160 prototype for the drand48() function. Otherwise, it is up to the
1161 program to supply one.
1162 "d_dup2"
1164 From d_dup2.U:
1165 This variable conditionally defines HAS_DUP2 if dup2() is available
1167 to duplicate file descriptors.
1168 "d_dup3"
1170 From d_dup3.U:
1171 This variable conditionally defines HAS_DUP3 if dup3() is available
1173 to duplicate file descriptors.
1174 "d_duplocale"
1176 From d_newlocale.U:
1177 This variable conditionally defines the "HAS_DUPLOCALE" symbol,
1179 which indicates to the C program that the duplocale() routine is
1180 available to duplicate a locale object.
1181 "d_eaccess"
1183 From d_eaccess.U:
1184 This variable conditionally defines the "HAS_EACCESS" symbol, which
1186 indicates to the C program that the eaccess() routine is available.
1187 "d_endgrent"
1189 From d_endgrent.U:
1190 This variable conditionally defines the "HAS_ENDGRENT" symbol,
1192 which indicates to the C program that the endgrent() routine is
1193 available for sequential access of the group database.
1194 "d_endgrent_r"
1196 From d_endgrent_r.U:
1197 This variable conditionally defines the "HAS_ENDGRENT_R" symbol,
1199 which indicates to the C program that the endgrent_r() routine is
1200 available.
1201 "d_endhent"
1203 From d_endhent.U:
1204 This variable conditionally defines "HAS_ENDHOSTENT" if
1206 endhostent() is available to close whatever was being used for host
1207 queries.
1208 "d_endhostent_r"
1210 From d_endhostent_r.U:
1211 This variable conditionally defines the "HAS_ENDHOSTENT_R" symbol,
1213 which indicates to the C program that the endhostent_r() routine is
1214 available.
1215 "d_endnent"
1217 From d_endnent.U:
1218 This variable conditionally defines "HAS_ENDNETENT" if endnetent()
1220 is available to close whatever was being used for network queries.
1221 "d_endnetent_r"
1223 From d_endnetent_r.U:
1224 This variable conditionally defines the "HAS_ENDNETENT_R" symbol,
1226 which indicates to the C program that the endnetent_r() routine is
1227 available.
1228 "d_endpent"
1230 From d_endpent.U:
1231 This variable conditionally defines "HAS_ENDPROTOENT" if
1233 endprotoent() is available to close whatever was being used for
1234 protocol queries.
1235 "d_endprotoent_r"
1237 From d_endprotoent_r.U:
1238 This variable conditionally defines the "HAS_ENDPROTOENT_R" symbol,
1240 which indicates to the C program that the endprotoent_r() routine
1241 is available.
1242 "d_endpwent"
1244 From d_endpwent.U:
1245 This variable conditionally defines the "HAS_ENDPWENT" symbol,
1247 which indicates to the C program that the endpwent() routine is
1248 available for sequential access of the passwd database.
1249 "d_endpwent_r"
1251 From d_endpwent_r.U:
1252 This variable conditionally defines the "HAS_ENDPWENT_R" symbol,
1254 which indicates to the C program that the endpwent_r() routine is
1255 available.
1256 "d_endsent"
1258 From d_endsent.U:
1259 This variable conditionally defines "HAS_ENDSERVENT" if
1261 endservent() is available to close whatever was being used for
1262 service queries.
1263 "d_endservent_r"
1265 From d_endservent_r.U:
1266 This variable conditionally defines the "HAS_ENDSERVENT_R" symbol,
1268 which indicates to the C program that the endservent_r() routine is
1269 available.
1270 "d_eofnblk"
1272 From nblock_io.U:
1273 This variable conditionally defines "EOF_NONBLOCK" if "EOF" can be
1275 seen when reading from a non-blocking I/O source.
1276 "d_erf"
1278 From d_erf.U:
1279 This variable conditionally defines the "HAS_ERF" symbol, which
1281 indicates to the C program that the erf() routine is available.
1282 "d_erfc"
1284 From d_erfc.U:
1285 This variable conditionally defines the "HAS_ERFC" symbol, which
1287 indicates to the C program that the erfc() routine is available.
1288 "d_eunice"
1290 From Guess.U:
1291 This variable conditionally defines the symbols "EUNICE" and "VAX",
1293 which alerts the C program that it must deal with idiosyncrasies of
1294 "VMS".
1295 "d_exp2"
1297 From d_exp2.U:
1298 This variable conditionally defines the HAS_EXP2 symbol, which
1300 indicates to the C program that the exp2() routine is available.
1301 "d_expm1"
1303 From d_expm1.U:
1304 This variable conditionally defines the HAS_EXPM1 symbol, which
1306 indicates to the C program that the expm1() routine is available.
1307 "d_faststdio"
1309 From d_faststdio.U:
1310 This variable conditionally defines the "HAS_FAST_STDIO" symbol,
1312 which indicates to the C program that the "fast stdio" is available
1313 to manipulate the stdio buffers directly.
1314 "d_fchdir"
1316 From d_fchdir.U:
1317 This variable conditionally defines the "HAS_FCHDIR" symbol, which
1319 indicates to the C program that the fchdir() routine is available.
1320 "d_fchmod"
1322 From d_fchmod.U:
1323 This variable conditionally defines the "HAS_FCHMOD" symbol, which
1325 indicates to the C program that the fchmod() routine is available
1326 to change mode of opened files.
1327 "d_fchmodat"
1329 From d_fsat.U:
1330 This variable conditionally defines the "HAS_FCHMODAT" symbol,
1332 which indicates the "POSIX" fchmodat() function is available.
1333 "d_fchown"
1335 From d_fchown.U:
1336 This variable conditionally defines the "HAS_FCHOWN" symbol, which
1338 indicates to the C program that the fchown() routine is available
1339 to change ownership of opened files.
1340 "d_fcntl"
1342 From d_fcntl.U:
1343 This variable conditionally defines the "HAS_FCNTL" symbol, and
1345 indicates whether the fcntl() function exists
1346 "d_fcntl_can_lock"
1348 From d_fcntl_can_lock.U:
1349 This variable conditionally defines the "FCNTL_CAN_LOCK" symbol and
1351 indicates whether file locking with fcntl() works.
1352 "d_fd_macros"
1354 From d_fd_set.U:
1355 This variable contains the eventual value of the "HAS_FD_MACROS"
1357 symbol, which indicates if your C compiler knows about the macros
1358 which manipulate an fd_set.
1359 "d_fd_set"
1361 From d_fd_set.U:
1362 This variable contains the eventual value of the "HAS_FD_SET"
1364 symbol, which indicates if your C compiler knows about the fd_set
1365 typedef.
1366 "d_fdclose"
1368 From d_fdclose.U:
1369 This variable conditionally defines the "HAS_FDCLOSE" symbol, which
1371 indicates to the C program that the fdclose() routine is available.
1372 "d_fdim"
1374 From d_fdim.U:
1375 This variable conditionally defines the "HAS_FDIM" symbol, which
1377 indicates to the C program that the fdim() routine is available.
1378 "d_fds_bits"
1380 From d_fd_set.U:
1381 This variable contains the eventual value of the "HAS_FDS_BITS"
1383 symbol, which indicates if your fd_set typedef contains the
1384 fds_bits member. If you have an fd_set typedef, but the dweebs who
1385 installed it did a half-fast job and neglected to provide the
1386 macros to manipulate an fd_set, "HAS_FDS_BITS" will let us know how
1387 to fix the gaffe.
1388 "d_fegetround"
1390 From d_fegetround.U:
1391 This variable conditionally defines "HAS_FEGETROUND" if
1393 fegetround() is available to get the floating point rounding mode.
1394 "d_fgetpos"
1396 From d_fgetpos.U:
1397 This variable conditionally defines "HAS_FGETPOS" if fgetpos() is
1399 available to get the file position indicator.
1400 "d_finite"
1402 From d_finite.U:
1403 This variable conditionally defines the "HAS_FINITE" symbol, which
1405 indicates to the C program that the finite() routine is available.
1406 "d_finitel"
1408 From d_finitel.U:
1409 This variable conditionally defines the "HAS_FINITEL" symbol, which
1411 indicates to the C program that the finitel() routine is available.
1412 "d_flexfnam"
1414 From d_flexfnam.U:
1415 This variable conditionally defines the "FLEXFILENAMES" symbol,
1417 which indicates that the system supports filenames longer than 14
1418 characters.
1419 "d_flock"
1421 From d_flock.U:
1422 This variable conditionally defines "HAS_FLOCK" if flock() is
1424 available to do file locking.
1425 "d_flockproto"
1427 From d_flockproto.U:
1428 This variable conditionally defines the "HAS_FLOCK_PROTO" symbol,
1430 which indicates to the C program that the system provides a
1431 prototype for the flock() function. Otherwise, it is up to the
1432 program to supply one.
1433 "d_fma"
1435 From d_fma.U:
1436 This variable conditionally defines the "HAS_FMA" symbol, which
1438 indicates to the C program that the fma() routine is available.
1439 "d_fmax"
1441 From d_fmax.U:
1442 This variable conditionally defines the "HAS_FMAX" symbol, which
1444 indicates to the C program that the fmax() routine is available.
1445 "d_fmin"
1447 From d_fmin.U:
1448 This variable conditionally defines the "HAS_FMIN" symbol, which
1450 indicates to the C program that the fmin() routine is available.
1451 "d_fork"
1453 From d_fork.U:
1454 This variable conditionally defines the "HAS_FORK" symbol, which
1456 indicates to the C program that the fork() routine is available.
1457 "d_fp_class"
1459 From d_fp_class.U:
1460 This variable conditionally defines the "HAS_FP_CLASS" symbol,
1462 which indicates to the C program that the fp_class() routine is
1463 available.
1464 "d_fp_classify"
1466 From d_fpclassify.U:
1467 This variable conditionally defines the "HAS_FP_CLASSIFY" symbol,
1469 which indicates to the C program that the fp_classify() routine is
1470 available.
1471 "d_fp_classl"
1473 From d_fp_classl.U:
1474 This variable conditionally defines the "HAS_FP_CLASSL" symbol,
1476 which indicates to the C program that the fp_classl() routine is
1477 available.
1478 "d_fpathconf"
1480 From d_pathconf.U:
1481 This variable conditionally defines the "HAS_FPATHCONF" symbol,
1483 which indicates to the C program that the pathconf() routine is
1484 available to determine file-system related limits and options
1485 associated with a given open file descriptor.
1486 "d_fpclass"
1488 From d_fpclass.U:
1489 This variable conditionally defines the "HAS_FPCLASS" symbol, which
1491 indicates to the C program that the fpclass() routine is available.
1492 "d_fpclassify"
1494 From d_fpclassify.U:
1495 This variable conditionally defines the "HAS_FPCLASSIFY" symbol,
1497 which indicates to the C program that the fpclassify() routine is
1498 available.
1499 "d_fpclassl"
1501 From d_fpclassl.U:
1502 This variable conditionally defines the "HAS_FPCLASSL" symbol,
1504 which indicates to the C program that the fpclassl() routine is
1505 available.
1506 "d_fpgetround"
1508 From d_fpgetround.U:
1509 This variable conditionally defines "HAS_FPGETROUND" if
1511 fpgetround() is available to get the floating point rounding mode.
1512 "d_fpos64_t"
1514 From d_fpos64_t.U:
1515 This symbol will be defined if the C compiler supports fpos64_t.
1517 "d_freelocale"
1519 From d_newlocale.U:
1520 This variable conditionally defines the "HAS_FREELOCALE" symbol,
1522 which indicates to the C program that the freelocale() routine is
1523 available to deallocates the resources associated with a locale
1524 object.
1525 "d_frexpl"
1527 From d_frexpl.U:
1528 This variable conditionally defines the "HAS_FREXPL" symbol, which
1530 indicates to the C program that the frexpl() routine is available.
1531 "d_fs_data_s"
1533 From d_fs_data_s.U:
1534 This variable conditionally defines the "HAS_STRUCT_FS_DATA"
1536 symbol, which indicates that the struct fs_data is supported.
1537 "d_fseeko"
1539 From d_fseeko.U:
1540 This variable conditionally defines the "HAS_FSEEKO" symbol, which
1542 indicates to the C program that the fseeko() routine is available.
1543 "d_fsetpos"
1545 From d_fsetpos.U:
1546 This variable conditionally defines "HAS_FSETPOS" if fsetpos() is
1548 available to set the file position indicator.
1549 "d_fstatfs"
1551 From d_fstatfs.U:
1552 This variable conditionally defines the "HAS_FSTATFS" symbol, which
1554 indicates to the C program that the fstatfs() routine is available.
1555 "d_fstatvfs"
1557 From d_statvfs.U:
1558 This variable conditionally defines the "HAS_FSTATVFS" symbol,
1560 which indicates to the C program that the fstatvfs() routine is
1561 available.
1562 "d_fsync"
1564 From d_fsync.U:
1565 This variable conditionally defines the "HAS_FSYNC" symbol, which
1567 indicates to the C program that the fsync() routine is available.
1568 "d_ftello"
1570 From d_ftello.U:
1571 This variable conditionally defines the "HAS_FTELLO" symbol, which
1573 indicates to the C program that the ftello() routine is available.
1574 "d_ftime"
1576 From d_ftime.U:
1577 This variable conditionally defines the "HAS_FTIME" symbol, which
1579 indicates that the ftime() routine exists. The ftime() routine is
1580 basically a sub-second accuracy clock.
1581 "d_futimes"
1583 From d_futimes.U:
1584 This variable conditionally defines the "HAS_FUTIMES" symbol, which
1586 indicates to the C program that the futimes() routine is available.
1587 "d_gai_strerror"
1589 From d_gai_strerror.U:
1590 This variable conditionally defines the "HAS_GAI_STRERROR" symbol
1592 if the gai_strerror() routine is available and can be used to
1593 translate error codes returned by getaddrinfo() into human readable
1594 strings.
1595 "d_Gconvert"
1597 From d_gconvert.U:
1598 This variable holds what Gconvert is defined as to convert floating
1600 point numbers into strings. By default, Configure sets "this"
1601 macro to use the first of gconvert, gcvt, or sprintf that pass
1602 sprintf-%g-like behavior tests. If perl is using long doubles, the
1603 macro uses the first of the following functions that pass
1604 Configure's tests: qgcvt, sprintf (if Configure knows how to make
1605 sprintf format long doubles--see sPRIgldbl), gconvert, gcvt, and
1606 sprintf (casting to double). The gconvert_preference and
1607 gconvert_ld_preference variables can be used to alter Configure's
1608 preferences, for doubles and long doubles, respectively. If
1609 present, they contain a space-separated list of one or more of the
1610 above function names in the order they should be tried.
1611 d_Gconvert may be set to override Configure with a platform-
1613 specific function. If this function expects a double, a different
1614 value may need to be set by the uselongdouble.cbu call-back unit so
1615 that long doubles can be formatted without loss of precision.
1616 "d_gdbm_ndbm_h_uses_prototypes"
1618 From i_ndbm.U:
1619 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
1621 symbol, which indicates that the gdbm-ndbm.h include file uses real
1622 "ANSI" C prototypes instead of K&R style function declarations. K&R
1623 style declarations are unsupported in C++, so the include file
1624 requires special handling when using a C++ compiler and this
1625 variable is undefined. Consult the different
1626 d_*ndbm_h_uses_prototypes variables to get the same information for
1627 alternative ndbm.h include files.
1628 "d_gdbmndbm_h_uses_prototypes"
1630 From i_ndbm.U:
1631 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
1633 symbol, which indicates that the gdbm/ndbm.h include file uses real
1634 "ANSI" C prototypes instead of K&R style function declarations. K&R
1635 style declarations are unsupported in C++, so the include file
1636 requires special handling when using a C++ compiler and this
1637 variable is undefined. Consult the different
1638 d_*ndbm_h_uses_prototypes variables to get the same information for
1639 alternative ndbm.h include files.
1640 "d_getaddrinfo"
1642 From d_getaddrinfo.U:
1643 This variable conditionally defines the "HAS_GETADDRINFO" symbol,
1645 which indicates to the C program that the getaddrinfo() function is
1646 available.
1647 "d_getcwd"
1649 From d_getcwd.U:
1650 This variable conditionally defines the "HAS_GETCWD" symbol, which
1652 indicates to the C program that the getcwd() routine is available
1653 to get the current working directory.
1654 "d_getenv_preserves_other_thread"
1656 From d_getenv_thread.U:
1657 This variable conditionally defines the
1659 "GETENV_PRESERVES_OTHER_THREAD" symbol, which indicates to the C
1660 program that the getenv() system call does not zap the static
1661 buffer in a different thread.
1662 "d_getespwnam"
1664 From d_getespwnam.U:
1665 This variable conditionally defines "HAS_GETESPWNAM" if
1667 getespwnam() is available to retrieve enhanced (shadow) password
1668 entries by name.
1669 "d_getfsstat"
1671 From d_getfsstat.U:
1672 This variable conditionally defines the "HAS_GETFSSTAT" symbol,
1674 which indicates to the C program that the getfsstat() routine is
1675 available.
1676 "d_getgrent"
1678 From d_getgrent.U:
1679 This variable conditionally defines the "HAS_GETGRENT" symbol,
1681 which indicates to the C program that the getgrent() routine is
1682 available for sequential access of the group database.
1683 "d_getgrent_r"
1685 From d_getgrent_r.U:
1686 This variable conditionally defines the "HAS_GETGRENT_R" symbol,
1688 which indicates to the C program that the getgrent_r() routine is
1689 available.
1690 "d_getgrgid_r"
1692 From d_getgrgid_r.U:
1693 This variable conditionally defines the "HAS_GETGRGID_R" symbol,
1695 which indicates to the C program that the getgrgid_r() routine is
1696 available.
1697 "d_getgrnam_r"
1699 From d_getgrnam_r.U:
1700 This variable conditionally defines the "HAS_GETGRNAM_R" symbol,
1702 which indicates to the C program that the getgrnam_r() routine is
1703 available.
1704 "d_getgrps"
1706 From d_getgrps.U:
1707 This variable conditionally defines the "HAS_GETGROUPS" symbol,
1709 which indicates to the C program that the getgroups() routine is
1710 available to get the list of process groups.
1711 "d_gethbyaddr"
1713 From d_gethbyad.U:
1714 This variable conditionally defines the "HAS_GETHOSTBYADDR" symbol,
1716 which indicates to the C program that the gethostbyaddr() routine
1717 is available to look up hosts by their "IP" addresses.
1718 "d_gethbyname"
1720 From d_gethbynm.U:
1721 This variable conditionally defines the "HAS_GETHOSTBYNAME" symbol,
1723 which indicates to the C program that the gethostbyname() routine
1724 is available to look up host names in some data base or other.
1725 "d_gethent"
1727 From d_gethent.U:
1728 This variable conditionally defines "HAS_GETHOSTENT" if
1730 gethostent() is available to look up host names in some data base
1731 or another.
1732 "d_gethname"
1734 From d_gethname.U:
1735 This variable conditionally defines the "HAS_GETHOSTNAME" symbol,
1737 which indicates to the C program that the gethostname() routine may
1738 be used to derive the host name.
1739 "d_gethostbyaddr_r"
1741 From d_gethostbyaddr_r.U:
1742 This variable conditionally defines the "HAS_GETHOSTBYADDR_R"
1744 symbol, which indicates to the C program that the gethostbyaddr_r()
1745 routine is available.
1746 "d_gethostbyname_r"
1748 From d_gethostbyname_r.U:
1749 This variable conditionally defines the "HAS_GETHOSTBYNAME_R"
1751 symbol, which indicates to the C program that the gethostbyname_r()
1752 routine is available.
1753 "d_gethostent_r"
1755 From d_gethostent_r.U:
1756 This variable conditionally defines the "HAS_GETHOSTENT_R" symbol,
1758 which indicates to the C program that the gethostent_r() routine is
1759 available.
1760 "d_gethostprotos"
1762 From d_gethostprotos.U:
1763 This variable conditionally defines the "HAS_GETHOST_PROTOS"
1765 symbol, which indicates to the C program that <netdb.h> supplies
1766 prototypes for the various gethost*() functions. See also
1767 netdbtype.U for probing for various netdb types.
1768 "d_getitimer"
1770 From d_getitimer.U:
1771 This variable conditionally defines the "HAS_GETITIMER" symbol,
1773 which indicates to the C program that the getitimer() routine is
1774 available.
1775 "d_getlogin"
1777 From d_getlogin.U:
1778 This variable conditionally defines the "HAS_GETLOGIN" symbol,
1780 which indicates to the C program that the getlogin() routine is
1781 available to get the login name.
1782 "d_getlogin_r"
1784 From d_getlogin_r.U:
1785 This variable conditionally defines the "HAS_GETLOGIN_R" symbol,
1787 which indicates to the C program that the getlogin_r() routine is
1788 available.
1789 "d_getmnt"
1791 From d_getmnt.U:
1792 This variable conditionally defines the "HAS_GETMNT" symbol, which
1794 indicates to the C program that the getmnt() routine is available
1795 to retrieve one or more mount info blocks by filename.
1796 "d_getmntent"
1798 From d_getmntent.U:
1799 This variable conditionally defines the "HAS_GETMNTENT" symbol,
1801 which indicates to the C program that the getmntent() routine is
1802 available to iterate through mounted files to get their mount info.
1803 "d_getnameinfo"
1805 From d_getnameinfo.U:
1806 This variable conditionally defines the "HAS_GETNAMEINFO" symbol,
1808 which indicates to the C program that the getnameinfo() function is
1809 available.
1810 "d_getnbyaddr"
1812 From d_getnbyad.U:
1813 This variable conditionally defines the "HAS_GETNETBYADDR" symbol,
1815 which indicates to the C program that the getnetbyaddr() routine is
1816 available to look up networks by their "IP" addresses.
1817 "d_getnbyname"
1819 From d_getnbynm.U:
1820 This variable conditionally defines the "HAS_GETNETBYNAME" symbol,
1822 which indicates to the C program that the getnetbyname() routine is
1823 available to look up networks by their names.
1824 "d_getnent"
1826 From d_getnent.U:
1827 This variable conditionally defines "HAS_GETNETENT" if getnetent()
1829 is available to look up network names in some data base or another.
1830 "d_getnetbyaddr_r"
1832 From d_getnetbyaddr_r.U:
1833 This variable conditionally defines the "HAS_GETNETBYADDR_R"
1835 symbol, which indicates to the C program that the getnetbyaddr_r()
1836 routine is available.
1837 "d_getnetbyname_r"
1839 From d_getnetbyname_r.U:
1840 This variable conditionally defines the "HAS_GETNETBYNAME_R"
1842 symbol, which indicates to the C program that the getnetbyname_r()
1843 routine is available.
1844 "d_getnetent_r"
1846 From d_getnetent_r.U:
1847 This variable conditionally defines the "HAS_GETNETENT_R" symbol,
1849 which indicates to the C program that the getnetent_r() routine is
1850 available.
1851 "d_getnetprotos"
1853 From d_getnetprotos.U:
1854 This variable conditionally defines the "HAS_GETNET_PROTOS" symbol,
1856 which indicates to the C program that <netdb.h> supplies prototypes
1857 for the various getnet*() functions. See also netdbtype.U for
1858 probing for various netdb types.
1859 "d_getpagsz"
1861 From d_getpagsz.U:
1862 This variable conditionally defines "HAS_GETPAGESIZE" if
1864 getpagesize() is available to get the system page size.
1865 "d_getpbyname"
1867 From d_getprotby.U:
1868 This variable conditionally defines the "HAS_GETPROTOBYNAME"
1870 symbol, which indicates to the C program that the getprotobyname()
1871 routine is available to look up protocols by their name.
1872 "d_getpbynumber"
1874 From d_getprotby.U:
1875 This variable conditionally defines the "HAS_GETPROTOBYNUMBER"
1877 symbol, which indicates to the C program that the
1878 getprotobynumber() routine is available to look up protocols by
1879 their number.
1880 "d_getpent"
1882 From d_getpent.U:
1883 This variable conditionally defines "HAS_GETPROTOENT" if
1885 getprotoent() is available to look up protocols in some data base
1886 or another.
1887 "d_getpgid"
1889 From d_getpgid.U:
1890 This variable conditionally defines the "HAS_GETPGID" symbol, which
1892 indicates to the C program that the getpgid(pid) function is
1893 available to get the process group id.
1894 "d_getpgrp"
1896 From d_getpgrp.U:
1897 This variable conditionally defines "HAS_GETPGRP" if getpgrp() is
1899 available to get the current process group.
1900 "d_getpgrp2"
1902 From d_getpgrp2.U:
1903 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1905 indicates to the C program that the getpgrp2() (as in DG/"UX")
1906 routine is available to get the current process group.
1907 "d_getppid"
1909 From d_getppid.U:
1910 This variable conditionally defines the "HAS_GETPPID" symbol, which
1912 indicates to the C program that the getppid() routine is available
1913 to get the parent process "ID".
1914 "d_getprior"
1916 From d_getprior.U:
1917 This variable conditionally defines "HAS_GETPRIORITY" if
1919 getpriority() is available to get a process's priority.
1920 "d_getprotobyname_r"
1922 From d_getprotobyname_r.U:
1923 This variable conditionally defines the "HAS_GETPROTOBYNAME_R"
1925 symbol, which indicates to the C program that the
1926 getprotobyname_r() routine is available.
1927 "d_getprotobynumber_r"
1929 From d_getprotobynumber_r.U:
1930 This variable conditionally defines the "HAS_GETPROTOBYNUMBER_R"
1932 symbol, which indicates to the C program that the
1933 getprotobynumber_r() routine is available.
1934 "d_getprotoent_r"
1936 From d_getprotoent_r.U:
1937 This variable conditionally defines the "HAS_GETPROTOENT_R" symbol,
1939 which indicates to the C program that the getprotoent_r() routine
1940 is available.
1941 "d_getprotoprotos"
1943 From d_getprotoprotos.U:
1944 This variable conditionally defines the "HAS_GETPROTO_PROTOS"
1946 symbol, which indicates to the C program that <netdb.h> supplies
1947 prototypes for the various getproto*() functions. See also
1948 netdbtype.U for probing for various netdb types.
1949 "d_getprpwnam"
1951 From d_getprpwnam.U:
1952 This variable conditionally defines "HAS_GETPRPWNAM" if
1954 getprpwnam() is available to retrieve protected (shadow) password
1955 entries by name.
1956 "d_getpwent"
1958 From d_getpwent.U:
1959 This variable conditionally defines the "HAS_GETPWENT" symbol,
1961 which indicates to the C program that the getpwent() routine is
1962 available for sequential access of the passwd database.
1963 "d_getpwent_r"
1965 From d_getpwent_r.U:
1966 This variable conditionally defines the "HAS_GETPWENT_R" symbol,
1968 which indicates to the C program that the getpwent_r() routine is
1969 available.
1970 "d_getpwnam_r"
1972 From d_getpwnam_r.U:
1973 This variable conditionally defines the "HAS_GETPWNAM_R" symbol,
1975 which indicates to the C program that the getpwnam_r() routine is
1976 available.
1977 "d_getpwuid_r"
1979 From d_getpwuid_r.U:
1980 This variable conditionally defines the "HAS_GETPWUID_R" symbol,
1982 which indicates to the C program that the getpwuid_r() routine is
1983 available.
1984 "d_getsbyname"
1986 From d_getsrvby.U:
1987 This variable conditionally defines the "HAS_GETSERVBYNAME" symbol,
1989 which indicates to the C program that the getservbyname() routine
1990 is available to look up services by their name.
1991 "d_getsbyport"
1993 From d_getsrvby.U:
1994 This variable conditionally defines the "HAS_GETSERVBYPORT" symbol,
1996 which indicates to the C program that the getservbyport() routine
1997 is available to look up services by their port.
1998 "d_getsent"
2000 From d_getsent.U:
2001 This variable conditionally defines "HAS_GETSERVENT" if
2003 getservent() is available to look up network services in some data
2004 base or another.
2005 "d_getservbyname_r"
2007 From d_getservbyname_r.U:
2008 This variable conditionally defines the "HAS_GETSERVBYNAME_R"
2010 symbol, which indicates to the C program that the getservbyname_r()
2011 routine is available.
2012 "d_getservbyport_r"
2014 From d_getservbyport_r.U:
2015 This variable conditionally defines the "HAS_GETSERVBYPORT_R"
2017 symbol, which indicates to the C program that the getservbyport_r()
2018 routine is available.
2019 "d_getservent_r"
2021 From d_getservent_r.U:
2022 This variable conditionally defines the "HAS_GETSERVENT_R" symbol,
2024 which indicates to the C program that the getservent_r() routine is
2025 available.
2026 "d_getservprotos"
2028 From d_getservprotos.U:
2029 This variable conditionally defines the "HAS_GETSERV_PROTOS"
2031 symbol, which indicates to the C program that <netdb.h> supplies
2032 prototypes for the various getserv*() functions. See also
2033 netdbtype.U for probing for various netdb types.
2034 "d_getspnam"
2036 From d_getspnam.U:
2037 This variable conditionally defines "HAS_GETSPNAM" if getspnam() is
2039 available to retrieve SysV shadow password entries by name.
2040 "d_getspnam_r"
2042 From d_getspnam_r.U:
2043 This variable conditionally defines the "HAS_GETSPNAM_R" symbol,
2045 which indicates to the C program that the getspnam_r() routine is
2046 available.
2047 "d_gettimeod"
2049 From d_ftime.U:
2050 This variable conditionally defines the "HAS_GETTIMEOFDAY" symbol,
2052 which indicates that the gettimeofday() system call exists (to
2053 obtain a sub-second accuracy clock). You should probably include
2054 <sys/resource.h>.
2055 "d_gmtime64"
2057 From d_timefuncs64.U:
2058 This variable conditionally defines the HAS_GMTIME64 symbol, which
2060 indicates to the C program that the gmtime64 () routine is
2061 available.
2062 "d_gmtime_r"
2064 From d_gmtime_r.U:
2065 This variable conditionally defines the "HAS_GMTIME_R" symbol,
2067 which indicates to the C program that the gmtime_r() routine is
2068 available.
2069 "d_gnulibc"
2071 From d_gnulibc.U:
2072 Defined if we're dealing with the "GNU" C Library.
2074 "d_grpasswd"
2076 From i_grp.U:
2077 This variable conditionally defines "GRPASSWD", which indicates
2079 that struct group in <grp.h> contains gr_passwd.
2080 "d_has_C_UTF8"
2082 From d_setlocale.U:
2083 This variable is set to either "true" or "false" depending on
2085 whether the compilation system supports the C.UTF-8 locale.
2086 "d_hasmntopt"
2088 From d_hasmntopt.U:
2089 This variable conditionally defines the "HAS_HASMNTOPT" symbol,
2091 which indicates to the C program that the hasmntopt() routine is
2092 available to query the mount options of file systems.
2093 "d_htonl"
2095 From d_htonl.U:
2096 This variable conditionally defines "HAS_HTONL" if htonl() and its
2098 friends are available to do network order byte swapping.
2099 "d_hypot"
2101 From d_hypot.U:
2102 This variable conditionally defines "HAS_HYPOT" if hypot is
2104 available for numerically stable hypotenuse function.
2105 "d_ilogb"
2107 From d_ilogb.U:
2108 This variable conditionally defines the "HAS_ILOGB" symbol, which
2110 indicates to the C program that the ilogb() routine is available
2111 for extracting the exponent of double x as a signed integer.
2112 "d_ilogbl"
2114 From d_ilogbl.U:
2115 This variable conditionally defines the "HAS_ILOGBL" symbol, which
2117 indicates to the C program that the ilogbl() routine is available
2118 for extracting the exponent of long double x as a signed integer.
2119 If scalbnl is also present we can emulate frexpl.
2120 "d_inc_version_list"
2122 From inc_version_list.U:
2123 This variable conditionally defines "PERL_INC_VERSION_LIST". It is
2125 set to undef when "PERL_INC_VERSION_LIST" is empty.
2126 "d_inetaton"
2128 From d_inetaton.U:
2129 This variable conditionally defines the "HAS_INET_ATON" symbol,
2131 which indicates to the C program that the inet_aton() function is
2132 available to parse "IP" address "dotted-quad" strings.
2133 "d_inetntop"
2135 From d_inetntop.U:
2136 This variable conditionally defines the "HAS_INETNTOP" symbol,
2138 which indicates to the C program that the inet_ntop() function is
2139 available.
2140 "d_inetpton"
2142 From d_inetpton.U:
2143 This variable conditionally defines the "HAS_INETPTON" symbol,
2145 which indicates to the C program that the inet_pton() function is
2146 available.
2147 "d_int64_t"
2149 From d_int64_t.U:
2150 This symbol will be defined if the C compiler supports int64_t.
2152 "d_ip_mreq"
2154 From d_socket.U:
2155 This variable conditionally defines the "HAS_IP_MREQ" symbol, which
2157 indicates the availability of a struct ip_mreq.
2158 "d_ip_mreq_source"
2160 From d_socket.U:
2161 This variable conditionally defines the "HAS_IP_MREQ_SOURCE"
2163 symbol, which indicates the availability of a struct
2164 ip_mreq_source.
2165 "d_ipv6_mreq"
2167 From d_socket.U:
2168 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
2170 indicates the availability of a struct ipv6_mreq.
2171 "d_ipv6_mreq_source"
2173 From d_socket.U:
2174 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE
2176 symbol, which indicates the availability of a struct
2177 ipv6_mreq_source.
2178 "d_isascii"
2180 From d_isascii.U:
2181 This variable conditionally defines the "HAS_ISASCII" constant,
2183 which indicates to the C program that isascii() is available.
2184 "d_isblank"
2186 From d_isblank.U:
2187 This variable conditionally defines the "HAS_ISBLANK" constant,
2189 which indicates to the C program that isblank() is available.
2190 "d_isfinite"
2192 From d_isfinite.U:
2193 This variable conditionally defines the "HAS_ISFINITE" symbol,
2195 which indicates to the C program that the isfinite() routine is
2196 available.
2197 "d_isfinitel"
2199 From d_isfinitel.U:
2200 This variable conditionally defines the "HAS_ISFINITEL" symbol,
2202 which indicates to the C program that the isfinitel() routine is
2203 available.
2204 "d_isinf"
2206 From d_isinf.U:
2207 This variable conditionally defines the "HAS_ISINF" symbol, which
2209 indicates to the C program that the isinf() routine is available.
2210 "d_isinfl"
2212 From d_isinfl.U:
2213 This variable conditionally defines the "HAS_ISINFL" symbol, which
2215 indicates to the C program that the isinfl() routine is available.
2216 "d_isless"
2218 From d_isless.U:
2219 This variable conditionally defines the "HAS_ISLESS" symbol, which
2221 indicates to the C program that the isless() routine is available.
2222 "d_isnan"
2224 From d_isnan.U:
2225 This variable conditionally defines the "HAS_ISNAN" symbol, which
2227 indicates to the C program that the isnan() routine is available.
2228 "d_isnanl"
2230 From d_isnanl.U:
2231 This variable conditionally defines the "HAS_ISNANL" symbol, which
2233 indicates to the C program that the isnanl() routine is available.
2234 "d_isnormal"
2236 From d_isnormal.U:
2237 This variable conditionally defines the "HAS_ISNORMAL" symbol,
2239 which indicates to the C program that the isnormal() routine is
2240 available.
2241 "d_j0"
2243 From d_j0.U:
2244 This variable conditionally defines the HAS_J0 symbol, which
2246 indicates to the C program that the j0() routine is available.
2247 "d_j0l"
2249 From d_j0.U:
2250 This variable conditionally defines the HAS_J0L symbol, which
2252 indicates to the C program that the j0l() routine is available.
2253 "d_killpg"
2255 From d_killpg.U:
2256 This variable conditionally defines the "HAS_KILLPG" symbol, which
2258 indicates to the C program that the killpg() routine is available
2259 to kill process groups.
2260 "d_lc_monetary_2008"
2262 From d_lc_monetary_2008.U:
2263 This variable conditionally defines HAS_LC_MONETARY_2008 if libc
2265 has the international currency locale rules from "POSIX"
2266 1003.1-2008.
2267 "d_lchown"
2269 From d_lchown.U:
2270 This variable conditionally defines the "HAS_LCHOWN" symbol, which
2272 indicates to the C program that the lchown() routine is available
2273 to operate on a symbolic link (instead of following the link).
2274 "d_ldbl_dig"
2276 From d_ldbl_dig.U:
2277 This variable conditionally defines d_ldbl_dig if this system's
2279 header files provide "LDBL_DIG", which is the number of significant
2280 digits in a long double precision number.
2281 "d_ldexpl"
2283 From d_longdbl.U:
2284 This variable conditionally defines the "HAS_LDEXPL" symbol, which
2286 indicates to the C program that the ldexpl() routine is available.
2287 "d_lgamma"
2289 From d_lgamma.U:
2290 This variable conditionally defines the "HAS_LGAMMA" symbol, which
2292 indicates to the C program that the lgamma() routine is available
2293 for the log gamma function. See also d_tgamma and d_lgamma_r.
2294 "d_lgamma_r"
2296 From d_lgamma_r.U:
2297 This variable conditionally defines the "HAS_LGAMMA_R" symbol,
2299 which indicates to the C program that the lgamma_r() routine is
2300 available for the log gamma function, without using the global
2301 signgam variable.
2302 "d_libm_lib_version"
2304 From d_libm_lib_version.U:
2305 This variable conditionally defines the "LIBM_LIB_VERSION" symbol,
2307 which indicates to the C program that math.h defines "_LIB_VERSION"
2308 being available in libm
2309 "d_libname_unique"
2311 From so.U:
2312 This variable is defined if the target system insists on unique
2314 basenames for shared library files. This is currently true on
2315 Android, false everywhere else we know of. Defaults to "undef".
2316 "d_link"
2318 From d_link.U:
2319 This variable conditionally defines "HAS_LINK" if link() is
2321 available to create hard links.
2322 "d_linkat"
2324 From d_fsat.U:
2325 This variable conditionally defines the "HAS_LINKAT" symbol, which
2327 indicates the "POSIX" linkat() function is available.
2328 "d_llrint"
2330 From d_llrint.U:
2331 This variable conditionally defines the "HAS_LLRINT" symbol, which
2333 indicates to the C program that the llrint() routine is available
2334 to return the long long value closest to a double (according to the
2335 current rounding mode).
2336 "d_llrintl"
2338 From d_llrintl.U:
2339 This variable conditionally defines the "HAS_LLRINTL" symbol, which
2341 indicates to the C program that the llrintl() routine is available
2342 to return the long long value closest to a long double (according
2343 to the current rounding mode).
2344 "d_llround"
2346 From d_llround.U:
2347 This variable conditionally defines the "HAS_LLROUND" symbol, which
2349 indicates to the C program that the llround() routine is available
2350 to return the long long value nearest to x.
2351 "d_llroundl"
2353 From d_llroundl.U:
2354 This variable conditionally defines the "HAS_LLROUNDL" symbol,
2356 which indicates to the C program that the llroundl() routine is
2357 available to return the long long value nearest to x away from
2358 zero.
2359 "d_localeconv_l"
2361 From d_localeconv_l.U:
2362 This variable conditionally defines the "HAS_LOCALECONV_L" symbol,
2364 which indicates to the C program that the localeconv_l() routine is
2365 available.
2366 "d_localtime64"
2368 From d_timefuncs64.U:
2369 This variable conditionally defines the HAS_LOCALTIME64 symbol,
2371 which indicates to the C program that the localtime64 () routine is
2372 available.
2373 "d_localtime_r"
2375 From d_localtime_r.U:
2376 This variable conditionally defines the "HAS_LOCALTIME_R" symbol,
2378 which indicates to the C program that the localtime_r() routine is
2379 available.
2380 "d_localtime_r_needs_tzset"
2382 From d_localtime_r.U:
2383 This variable conditionally defines the "LOCALTIME_R_NEEDS_TZSET"
2385 symbol, which makes us call tzset before localtime_r()
2386 "d_locconv"
2388 From d_locconv.U:
2389 This variable conditionally defines "HAS_LOCALECONV" if
2391 localeconv() is available for numeric and monetary formatting
2392 conventions.
2393 "d_lockf"
2395 From d_lockf.U:
2396 This variable conditionally defines "HAS_LOCKF" if lockf() is
2398 available to do file locking.
2399 "d_log1p"
2401 From d_log1p.U:
2402 This variable conditionally defines the HAS_LOG1P symbol, which
2404 indicates to the C program that the logp1() routine is available to
2405 compute log(1 + x) for values of x close to zero.
2406 "d_log2"
2408 From d_log2.U:
2409 This variable conditionally defines the HAS_LOG2 symbol, which
2411 indicates to the C program that the log2() routine is available to
2412 compute log base two.
2413 "d_logb"
2415 From d_logb.U:
2416 This variable conditionally defines the "HAS_LOGB" symbol, which
2418 indicates to the C program that the logb() routine is available to
2419 extract the exponent of x.
2420 "d_long_double_style_ieee"
2422 From d_longdbl.U:
2423 This variable conditionally defines "LONG_DOUBLE_STYLE_IEEE" if the
2425 long double is any of the "IEEE" 754 style long doubles:
2426 "LONG_DOUBLE_STYLE_IEEE_STD", "LONG_DOUBLE_STYLE_IEEE_EXTENDED",
2427 "LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE".
2428 "d_long_double_style_ieee_doubledouble"
2430 From d_longdbl.U:
2431 This variable conditionally defines
2433 "LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE" if the long double is the
2434 128-bit "IEEE" 754 double-double.
2435 "d_long_double_style_ieee_extended"
2437 From d_longdbl.U:
2438 This variable conditionally defines
2440 "LONG_DOUBLE_STYLE_IEEE_EXTENDED" if the long double is the 80-bit
2441 "IEEE" 754 extended precision. Note that despite the "extended"
2442 this is less than the "std", since this is an extension of the
2443 double precision.
2444 "d_long_double_style_ieee_std"
2446 From d_longdbl.U:
2447 This variable conditionally defines "LONG_DOUBLE_STYLE_IEEE_STD" if
2449 the long double is the 128-bit "IEEE" 754.
2450 "d_long_double_style_vax"
2452 From d_longdbl.U:
2453 This variable conditionally defines "LONG_DOUBLE_STYLE_VAX" if the
2455 long double is the 128-bit "VAX" format H.
2456 "d_longdbl"
2458 From d_longdbl.U:
2459 This variable conditionally defines "HAS_LONG_DOUBLE" if the long
2461 double type is supported.
2462 "d_longlong"
2464 From d_longlong.U:
2465 This variable conditionally defines "HAS_LONG_LONG" if the long
2467 long type is supported.
2468 "d_lrint"
2470 From d_lrint.U:
2471 This variable conditionally defines the "HAS_LRINT" symbol, which
2473 indicates to the C program that the lrint() routine is available to
2474 return the integral value closest to a double (according to the
2475 current rounding mode).
2476 "d_lrintl"
2478 From d_lrintl.U:
2479 This variable conditionally defines the "HAS_LRINTL" symbol, which
2481 indicates to the C program that the lrintl() routine is available
2482 to return the integral value closest to a long double (according to
2483 the current rounding mode).
2484 "d_lround"
2486 From d_lround.U:
2487 This variable conditionally defines the "HAS_LROUND" symbol, which
2489 indicates to the C program that the lround() routine is available
2490 to return the integral value nearest to x.
2491 "d_lroundl"
2493 From d_lroundl.U:
2494 This variable conditionally defines the "HAS_LROUNDL" symbol, which
2496 indicates to the C program that the lroundl() routine is available
2497 to return the integral value nearest to x away from zero.
2498 "d_lseekproto"
2500 From d_lseekproto.U:
2501 This variable conditionally defines the "HAS_LSEEK_PROTO" symbol,
2503 which indicates to the C program that the system provides a
2504 prototype for the lseek() function. Otherwise, it is up to the
2505 program to supply one.
2506 "d_lstat"
2508 From d_lstat.U:
2509 This variable conditionally defines "HAS_LSTAT" if lstat() is
2511 available to do file stats on symbolic links.
2512 "d_madvise"
2514 From d_madvise.U:
2515 This variable conditionally defines "HAS_MADVISE" if madvise() is
2517 available to map a file into memory.
2518 "d_malloc_good_size"
2520 From d_malloc_size.U:
2521 This symbol, if defined, indicates that the malloc_good_size
2523 routine is available for use.
2524 "d_malloc_size"
2526 From d_malloc_size.U:
2527 This symbol, if defined, indicates that the malloc_size routine is
2529 available for use.
2530 "d_malloc_usable_size"
2532 From d_malloc_size.U:
2533 This symbol, if defined, indicates that the malloc_usable_size
2535 routine is available for use.
2536 "d_mblen"
2538 From d_mblen.U:
2539 This variable conditionally defines the "HAS_MBLEN" symbol, which
2541 indicates to the C program that the mblen() routine is available to
2542 find the number of bytes in a multibyte character.
2543 "d_mbrlen"
2545 From d_mbrlen.U:
2546 This variable conditionally defines the "HAS_MBRLEN" symbol if the
2548 mbrlen() routine is available to be used to get the length of
2549 multi-byte character strings.
2550 "d_mbrtowc"
2552 From d_mbrtowc.U:
2553 This variable conditionally defines the "HAS_MBRTOWC" symbol if the
2555 mbrtowc() routine is available to be used to convert a multi-byte
2556 character into a wide character.
2557 "d_mbstowcs"
2559 From d_mbstowcs.U:
2560 This variable conditionally defines the "HAS_MBSTOWCS" symbol,
2562 which indicates to the C program that the mbstowcs() routine is
2563 available to convert a multibyte string into a wide character
2564 string.
2565 "d_mbtowc"
2567 From d_mbtowc.U:
2568 This variable conditionally defines the "HAS_MBTOWC" symbol, which
2570 indicates to the C program that the mbtowc() routine is available
2571 to convert multibyte to a wide character.
2572 "d_memmem"
2574 From d_memmem.U:
2575 This variable conditionally defines the "HAS_MEMMEM" symbol, which
2577 indicates to the C program that the memmem() routine is available
2578 to return a pointer to the start of the first occurrence of a
2579 substring in a memory area (or "NULL" if not found).
2580 "d_memrchr"
2582 From d_memrchr.U:
2583 This variable conditionally defines the "HAS_MEMRCHR" symbol, which
2585 indicates to the C program that the memrchr() routine is available
2586 to return a pointer to the last occurrence of a byte in a memory
2587 area (or "NULL" if not found).
2588 "d_mkdir"
2590 From d_mkdir.U:
2591 This variable conditionally defines the "HAS_MKDIR" symbol, which
2593 indicates to the C program that the mkdir() routine is available to
2594 create directories..
2595 "d_mkdtemp"
2597 From d_mkdtemp.U:
2598 This variable conditionally defines the "HAS_MKDTEMP" symbol, which
2600 indicates to the C program that the mkdtemp() routine is available
2601 to exclusively create a uniquely named temporary directory.
2602 "d_mkfifo"
2604 From d_mkfifo.U:
2605 This variable conditionally defines the "HAS_MKFIFO" symbol, which
2607 indicates to the C program that the mkfifo() routine is available.
2608 "d_mkostemp"
2610 From d_mkostemp.U:
2611 This variable conditionally defines "HAS_MKOSTEMP" if mkostemp() is
2613 available to exclusively create and open a uniquely named (with a
2614 suffix) temporary file.
2615 "d_mkstemp"
2617 From d_mkstemp.U:
2618 This variable conditionally defines the "HAS_MKSTEMP" symbol, which
2620 indicates to the C program that the mkstemp() routine is available
2621 to exclusively create and open a uniquely named temporary file.
2622 "d_mkstemps"
2624 From d_mkstemps.U:
2625 This variable conditionally defines the "HAS_MKSTEMPS" symbol,
2627 which indicates to the C program that the mkstemps() routine is
2628 available to exclusively create and open a uniquely named (with a
2629 suffix) temporary file.
2630 "d_mktime"
2632 From d_mktime.U:
2633 This variable conditionally defines the "HAS_MKTIME" symbol, which
2635 indicates to the C program that the mktime() routine is available.
2636 "d_mktime64"
2638 From d_timefuncs64.U:
2639 This variable conditionally defines the HAS_MKTIME64 symbol, which
2641 indicates to the C program that the mktime64 () routine is
2642 available.
2643 "d_mmap"
2645 From d_mmap.U:
2646 This variable conditionally defines "HAS_MMAP" if mmap() is
2648 available to map a file into memory.
2649 "d_modfl"
2651 From d_modfl.U:
2652 This variable conditionally defines the "HAS_MODFL" symbol, which
2654 indicates to the C program that the modfl() routine is available.
2655 "d_modflproto"
2657 From d_modfl.U:
2658 This symbol, if defined, indicates that the system provides a
2660 prototype for the modfl() function. Otherwise, it is up to the
2661 program to supply one. C99 says it should be long double
2662 modfl(long double, long double *);
2663 "d_mprotect"
2665 From d_mprotect.U:
2666 This variable conditionally defines "HAS_MPROTECT" if mprotect() is
2668 available to modify the access protection of a memory mapped file.
2669 "d_msg"
2671 From d_msg.U:
2672 This variable conditionally defines the "HAS_MSG" symbol, which
2674 indicates that the entire msg*(2) library is present.
2675 "d_msg_ctrunc"
2677 From d_socket.U:
2678 This variable conditionally defines the "HAS_MSG_CTRUNC" symbol,
2680 which indicates that the "MSG_CTRUNC" is available. #ifdef is not
2681 enough because it may be an enum, glibc has been known to do this.
2682 "d_msg_dontroute"
2684 From d_socket.U:
2685 This variable conditionally defines the "HAS_MSG_DONTROUTE" symbol,
2687 which indicates that the "MSG_DONTROUTE" is available. #ifdef is
2688 not enough because it may be an enum, glibc has been known to do
2689 this.
2690 "d_msg_oob"
2692 From d_socket.U:
2693 This variable conditionally defines the "HAS_MSG_OOB" symbol, which
2695 indicates that the "MSG_OOB" is available. #ifdef is not enough
2696 because it may be an enum, glibc has been known to do this.
2697 "d_msg_peek"
2699 From d_socket.U:
2700 This variable conditionally defines the "HAS_MSG_PEEK" symbol,
2702 which indicates that the "MSG_PEEK" is available. #ifdef is not
2703 enough because it may be an enum, glibc has been known to do this.
2704 "d_msg_proxy"
2706 From d_socket.U:
2707 This variable conditionally defines the "HAS_MSG_PROXY" symbol,
2709 which indicates that the "MSG_PROXY" is available. #ifdef is not
2710 enough because it may be an enum, glibc has been known to do this.
2711 "d_msgctl"
2713 From d_msgctl.U:
2714 This variable conditionally defines the "HAS_MSGCTL" symbol, which
2716 indicates to the C program that the msgctl() routine is available.
2717 "d_msgget"
2719 From d_msgget.U:
2720 This variable conditionally defines the "HAS_MSGGET" symbol, which
2722 indicates to the C program that the msgget() routine is available.
2723 "d_msghdr_s"
2725 From d_msghdr_s.U:
2726 This variable conditionally defines the "HAS_STRUCT_MSGHDR" symbol,
2728 which indicates that the struct msghdr is supported.
2729 "d_msgrcv"
2731 From d_msgrcv.U:
2732 This variable conditionally defines the "HAS_MSGRCV" symbol, which
2734 indicates to the C program that the msgrcv() routine is available.
2735 "d_msgsnd"
2737 From d_msgsnd.U:
2738 This variable conditionally defines the "HAS_MSGSND" symbol, which
2740 indicates to the C program that the msgsnd() routine is available.
2741 "d_msync"
2743 From d_msync.U:
2744 This variable conditionally defines "HAS_MSYNC" if msync() is
2746 available to synchronize a mapped file.
2747 "d_munmap"
2749 From d_munmap.U:
2750 This variable conditionally defines "HAS_MUNMAP" if munmap() is
2752 available to unmap a region mapped by mmap().
2753 "d_mymalloc"
2755 From mallocsrc.U:
2756 This variable conditionally defines "MYMALLOC" in case other parts
2758 of the source want to take special action if "MYMALLOC" is used.
2759 This may include different sorts of profiling or error detection.
2760 "d_nan"
2762 From d_nan.U:
2763 This variable conditionally defines "HAS_NAN" if nan() is available
2765 to generate NaN.
2766 "d_nanosleep"
2768 From d_nanosleep.U:
2769 This variable conditionally defines "HAS_NANOSLEEP" if nanosleep()
2771 is available to sleep with 1E-9 sec accuracy.
2772 "d_ndbm"
2774 From i_ndbm.U:
2775 This variable conditionally defines the "HAS_NDBM" symbol, which
2777 indicates that both the ndbm.h include file and an appropriate ndbm
2778 library exist. Consult the different i_*ndbm variables to find out
2779 the actual include location. Sometimes, a system has the header
2780 file but not the library. This variable will only be set if the
2781 system has both.
2782 "d_ndbm_h_uses_prototypes"
2784 From i_ndbm.U:
2785 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
2787 symbol, which indicates that the ndbm.h include file uses real
2788 "ANSI" C prototypes instead of K&R style function declarations. K&R
2789 style declarations are unsupported in C++, so the include file
2790 requires special handling when using a C++ compiler and this
2791 variable is undefined. Consult the different
2792 d_*ndbm_h_uses_prototypes variables to get the same information for
2793 alternative ndbm.h include files.
2794 "d_nearbyint"
2796 From d_nearbyint.U:
2797 This variable conditionally defines "HAS_NEARBYINT" if nearbyint()
2799 is available to return the integral value closest to (according to
2800 the current rounding mode) to x.
2801 "d_newlocale"
2803 From d_newlocale.U:
2804 This variable conditionally defines the "HAS_NEWLOCALE" symbol,
2806 which indicates to the C program that the newlocale() routine is
2807 available to return a new locale object or modify an existing
2808 locale object.
2809 "d_nextafter"
2811 From d_nextafter.U:
2812 This variable conditionally defines "HAS_NEXTAFTER" if nextafter()
2814 is available to return the next machine representable double from x
2815 in direction y.
2816 "d_nexttoward"
2818 From d_nexttoward.U:
2819 This variable conditionally defines "HAS_NEXTTOWARD" if
2821 nexttoward() is available to return the next machine representable
2822 long double from x in direction y.
2823 "d_nice"
2825 From d_nice.U:
2826 This variable conditionally defines the "HAS_NICE" symbol, which
2828 indicates to the C program that the nice() routine is available.
2829 "d_nl_langinfo"
2831 From d_nl_langinfo.U:
2832 This variable conditionally defines the "HAS_NL_LANGINFO" symbol,
2834 which indicates to the C program that the nl_langinfo() routine is
2835 available.
2836 "d_nv_preserves_uv"
2838 From perlxv.U:
2839 This variable indicates whether a variable of type nvtype can
2841 preserve all the bits a variable of type uvtype.
2842 "d_nv_zero_is_allbits_zero"
2844 From perlxv.U:
2845 This variable indicates whether a variable of type nvtype stores
2847 0.0 in memory as all bits zero.
2848 "d_off64_t"
2850 From d_off64_t.U:
2851 This symbol will be defined if the C compiler supports off64_t.
2853 "d_old_pthread_create_joinable"
2855 From d_pthrattrj.U:
2856 This variable conditionally defines pthread_create_joinable. undef
2858 if pthread.h defines "PTHREAD_CREATE_JOINABLE".
2859 "d_oldpthreads"
2861 From usethreads.U:
2862 This variable conditionally defines the "OLD_PTHREADS_API" symbol,
2864 and indicates that Perl should be built to use the old draft
2865 "POSIX" threads "API". This is only potentially meaningful if
2866 usethreads is set.
2867 "d_oldsock"
2869 From d_socket.U:
2870 This variable conditionally defines the "OLDSOCKET" symbol, which
2872 indicates that the "BSD" socket interface is based on 4.1c and not
2873 4.2.
2874 "d_open3"
2876 From d_open3.U:
2877 This variable conditionally defines the HAS_OPEN3 manifest
2879 constant, which indicates to the C program that the 3 argument
2880 version of the open(2) function is available.
2881 "d_openat"
2883 From d_fsat.U:
2884 This variable conditionally defines the "HAS_OPENAT" symbol, which
2886 indicates the "POSIX" openat() function is available.
2887 "d_pathconf"
2889 From d_pathconf.U:
2890 This variable conditionally defines the "HAS_PATHCONF" symbol,
2892 which indicates to the C program that the pathconf() routine is
2893 available to determine file-system related limits and options
2894 associated with a given filename.
2895 "d_pause"
2897 From d_pause.U:
2898 This variable conditionally defines the "HAS_PAUSE" symbol, which
2900 indicates to the C program that the pause() routine is available to
2901 suspend a process until a signal is received.
2902 "d_perl_otherlibdirs"
2904 From otherlibdirs.U:
2905 This variable conditionally defines "PERL_OTHERLIBDIRS", which
2907 contains a colon-separated set of paths for the perl binary to
2908 include in @"INC". See also otherlibdirs.
2909 "d_phostname"
2911 From d_gethname.U:
2912 This variable conditionally defines the "HAS_PHOSTNAME" symbol,
2914 which contains the shell command which, when fed to popen(), may be
2915 used to derive the host name.
2916 "d_pipe"
2918 From d_pipe.U:
2919 This variable conditionally defines the "HAS_PIPE" symbol, which
2921 indicates to the C program that the pipe() routine is available to
2922 create an inter-process channel.
2923 "d_pipe2"
2925 From d_pipe2.U:
2926 This variable conditionally defines the HAS_PIPE2 symbol, which
2928 indicates to the C program that the pipe2() routine is available to
2929 create an inter-process channel.
2930 "d_poll"
2932 From d_poll.U:
2933 This variable conditionally defines the "HAS_POLL" symbol, which
2935 indicates to the C program that the poll() routine is available to
2936 poll active file descriptors.
2937 "d_portable"
2939 From d_portable.U:
2940 This variable conditionally defines the "PORTABLE" symbol, which
2942 indicates to the C program that it should not assume that it is
2943 running on the machine it was compiled on.
2944 "d_prctl"
2946 From d_prctl.U:
2947 This variable conditionally defines the "HAS_PRCTL" symbol, which
2949 indicates to the C program that the prctl() routine is available.
2950 Note that there are at least two prctl variants: Linux and Irix.
2951 While they are somewhat similar, they are incompatible.
2952 "d_prctl_set_name"
2954 From d_prctl.U:
2955 This variable conditionally defines the "HAS_PRCTL_SET_NAME"
2957 symbol, which indicates to the C program that the prctl() routine
2958 supports the "PR_SET_NAME" option.
2959 "d_PRId64"
2961 From quadfio.U:
2962 This variable conditionally defines the PERL_PRId64 symbol, which
2964 indicates that stdio has a symbol to print 64-bit decimal numbers.
2965 "d_PRIeldbl"
2967 From longdblfio.U:
2968 This variable conditionally defines the PERL_PRIfldbl symbol, which
2970 indicates that stdio has a symbol to print long doubles.
2971 "d_PRIEUldbl"
2973 From longdblfio.U:
2974 This variable conditionally defines the PERL_PRIfldbl symbol, which
2976 indicates that stdio has a symbol to print long doubles. The "U"
2977 in the name is to separate this from d_PRIeldbl so that even case-
2978 blind systems can see the difference.
2979 "d_PRIfldbl"
2981 From longdblfio.U:
2982 This variable conditionally defines the PERL_PRIfldbl symbol, which
2984 indicates that stdio has a symbol to print long doubles.
2985 "d_PRIFUldbl"
2987 From longdblfio.U:
2988 This variable conditionally defines the PERL_PRIfldbl symbol, which
2990 indicates that stdio has a symbol to print long doubles. The "U"
2991 in the name is to separate this from d_PRIfldbl so that even case-
2992 blind systems can see the difference.
2993 "d_PRIgldbl"
2995 From longdblfio.U:
2996 This variable conditionally defines the PERL_PRIfldbl symbol, which
2998 indicates that stdio has a symbol to print long doubles.
2999 "d_PRIGUldbl"
3001 From longdblfio.U:
3002 This variable conditionally defines the PERL_PRIfldbl symbol, which
3004 indicates that stdio has a symbol to print long doubles. The "U"
3005 in the name is to separate this from d_PRIgldbl so that even case-
3006 blind systems can see the difference.
3007 "d_PRIi64"
3009 From quadfio.U:
3010 This variable conditionally defines the PERL_PRIi64 symbol, which
3012 indicates that stdio has a symbol to print 64-bit decimal numbers.
3013 "d_printf_format_null"
3015 From d_attribut.U:
3016 This variable conditionally defines "PRINTF_FORMAT_NULL_OK", which
3018 indicates the C compiler allows printf-like formats to be null.
3019 "d_PRIo64"
3021 From quadfio.U:
3022 This variable conditionally defines the PERL_PRIo64 symbol, which
3024 indicates that stdio has a symbol to print 64-bit octal numbers.
3025 "d_PRIu64"
3027 From quadfio.U:
3028 This variable conditionally defines the PERL_PRIu64 symbol, which
3030 indicates that stdio has a symbol to print 64-bit unsigned decimal
3031 numbers.
3032 "d_PRIx64"
3034 From quadfio.U:
3035 This variable conditionally defines the PERL_PRIx64 symbol, which
3037 indicates that stdio has a symbol to print 64-bit hexadecimal
3038 numbers.
3039 "d_PRIXU64"
3041 From quadfio.U:
3042 This variable conditionally defines the PERL_PRIXU64 symbol, which
3044 indicates that stdio has a symbol to print 64-bit hExADECimAl
3045 numbers. The "U" in the name is to separate this from d_PRIx64 so
3046 that even case-blind systems can see the difference.
3047 "d_procselfexe"
3049 From d_procselfexe.U:
3050 Defined if $procselfexe is symlink to the absolute pathname of the
3052 executing program.
3053 "d_pseudofork"
3055 From d_vfork.U:
3056 This variable conditionally defines the "HAS_PSEUDOFORK" symbol,
3058 which indicates that an emulation of the fork routine is available.
3059 "d_pthread_atfork"
3061 From d_pthread_atfork.U:
3062 This variable conditionally defines the "HAS_PTHREAD_ATFORK"
3064 symbol, which indicates to the C program that the pthread_atfork()
3065 routine is available.
3066 "d_pthread_attr_setscope"
3068 From d_pthread_attr_ss.U:
3069 This variable conditionally defines "HAS_PTHREAD_ATTR_SETSCOPE" if
3071 pthread_attr_setscope() is available to set the contention scope
3072 attribute of a thread attribute object.
3073 "d_pthread_yield"
3075 From d_pthread_y.U:
3076 This variable conditionally defines the "HAS_PTHREAD_YIELD" symbol
3078 if the pthread_yield routine is available to yield the execution of
3079 the current thread.
3080 "d_ptrdiff_t"
3082 From d_ptrdiff_t.U:
3083 This symbol will be defined if the C compiler supports ptrdiff_t.
3085 "d_pwage"
3087 From i_pwd.U:
3088 This variable conditionally defines "PWAGE", which indicates that
3090 struct passwd contains pw_age.
3091 "d_pwchange"
3093 From i_pwd.U:
3094 This variable conditionally defines "PWCHANGE", which indicates
3096 that struct passwd contains pw_change.
3097 "d_pwclass"
3099 From i_pwd.U:
3100 This variable conditionally defines "PWCLASS", which indicates that
3102 struct passwd contains pw_class.
3103 "d_pwcomment"
3105 From i_pwd.U:
3106 This variable conditionally defines "PWCOMMENT", which indicates
3108 that struct passwd contains pw_comment.
3109 "d_pwexpire"
3111 From i_pwd.U:
3112 This variable conditionally defines "PWEXPIRE", which indicates
3114 that struct passwd contains pw_expire.
3115 "d_pwgecos"
3117 From i_pwd.U:
3118 This variable conditionally defines "PWGECOS", which indicates that
3120 struct passwd contains pw_gecos.
3121 "d_pwpasswd"
3123 From i_pwd.U:
3124 This variable conditionally defines "PWPASSWD", which indicates
3126 that struct passwd contains pw_passwd.
3127 "d_pwquota"
3129 From i_pwd.U:
3130 This variable conditionally defines "PWQUOTA", which indicates that
3132 struct passwd contains pw_quota.
3133 "d_qgcvt"
3135 From d_qgcvt.U:
3136 This variable conditionally defines the "HAS_QGCVT" symbol, which
3138 indicates to the C program that the qgcvt() routine is available.
3139 "d_quad"
3141 From quadtype.U:
3142 This variable, if defined, tells that there's a 64-bit integer
3144 type, quadtype.
3145 "d_querylocale"
3147 From d_newlocale.U:
3148 This variable conditionally defines the "HAS_QUERYLOCALE" symbol,
3150 which indicates to the C program that the querylocale() routine is
3151 available to return the name of the locale for a category mask.
3152 "d_random_r"
3154 From d_random_r.U:
3155 This variable conditionally defines the "HAS_RANDOM_R" symbol,
3157 which indicates to the C program that the random_r() routine is
3158 available.
3159 "d_re_comp"
3161 From d_regcmp.U:
3162 This variable conditionally defines the "HAS_RECOMP" symbol, which
3164 indicates to the C program that the re_comp() routine is available
3165 for regular pattern matching (usually on "BSD"). If so, it is
3166 likely that re_exec() exists.
3167 "d_readdir"
3169 From d_readdir.U:
3170 This variable conditionally defines "HAS_READDIR" if readdir() is
3172 available to read directory entries.
3173 "d_readdir64_r"
3175 From d_readdir64_r.U:
3176 This variable conditionally defines the HAS_READDIR64_R symbol,
3178 which indicates to the C program that the readdir64_r() routine is
3179 available.
3180 "d_readdir_r"
3182 From d_readdir_r.U:
3183 This variable conditionally defines the "HAS_READDIR_R" symbol,
3185 which indicates to the C program that the readdir_r() routine is
3186 available.
3187 "d_readlink"
3189 From d_readlink.U:
3190 This variable conditionally defines the "HAS_READLINK" symbol,
3192 which indicates to the C program that the readlink() routine is
3193 available to read the value of a symbolic link.
3194 "d_readv"
3196 From d_readv.U:
3197 This variable conditionally defines the "HAS_READV" symbol, which
3199 indicates to the C program that the readv() routine is available.
3200 "d_recvmsg"
3202 From d_recvmsg.U:
3203 This variable conditionally defines the "HAS_RECVMSG" symbol, which
3205 indicates to the C program that the recvmsg() routine is available.
3206 "d_regcmp"
3208 From d_regcmp.U:
3209 This variable conditionally defines the "HAS_REGCMP" symbol, which
3211 indicates to the C program that the regcmp() routine is available
3212 for regular pattern matching (usually on System V).
3213 "d_regcomp"
3215 From d_regcmp.U:
3216 This variable conditionally defines the "HAS_REGCOMP" symbol, which
3218 indicates to the C program that the regcomp() routine is available
3219 for regular pattern matching (usually on POSIX.2 conforming
3220 systems).
3221 "d_remainder"
3223 From d_remainder.U:
3224 This variable conditionally defines the "HAS_REMAINDER" symbol,
3226 which indicates to the C program that the remainder() routine is
3227 available.
3228 "d_remquo"
3230 From d_remquo.U:
3231 This variable conditionally defines the "HAS_REMQUO" symbol, which
3233 indicates to the C program that the remquo() routine is available.
3234 "d_rename"
3236 From d_rename.U:
3237 This variable conditionally defines the "HAS_RENAME" symbol, which
3239 indicates to the C program that the rename() routine is available
3240 to rename files.
3241 "d_renameat"
3243 From d_fsat.U:
3244 This variable conditionally defines the "HAS_RENAMEAT" symbol,
3246 which indicates the "POSIX" renameat() function is available.
3247 "d_rewinddir"
3249 From d_readdir.U:
3250 This variable conditionally defines "HAS_REWINDDIR" if rewinddir()
3252 is available.
3253 "d_rint"
3255 From d_rint.U:
3256 This variable conditionally defines the "HAS_RINT" symbol, which
3258 indicates to the C program that the rint() routine is available.
3259 "d_rmdir"
3261 From d_rmdir.U:
3262 This variable conditionally defines "HAS_RMDIR" if rmdir() is
3264 available to remove directories.
3265 "d_round"
3267 From d_round.U:
3268 This variable conditionally defines the "HAS_ROUND" symbol, which
3270 indicates to the C program that the round() routine is available.
3271 "d_sbrkproto"
3273 From d_sbrkproto.U:
3274 This variable conditionally defines the "HAS_SBRK_PROTO" symbol,
3276 which indicates to the C program that the system provides a
3277 prototype for the sbrk() function. Otherwise, it is up to the
3278 program to supply one.
3279 "d_scalbn"
3281 From d_scalbn.U:
3282 This variable conditionally defines the "HAS_SCALBN" symbol, which
3284 indicates to the C program that the scalbn() routine is available.
3285 "d_scalbnl"
3287 From d_scalbnl.U:
3288 This variable conditionally defines the "HAS_SCALBNL" symbol, which
3290 indicates to the C program that the scalbnl() routine is available.
3291 If ilogbl is also present we can emulate frexpl.
3292 "d_sched_yield"
3294 From d_pthread_y.U:
3295 This variable conditionally defines the "HAS_SCHED_YIELD" symbol if
3297 the sched_yield routine is available to yield the execution of the
3298 current thread.
3299 "d_scm_rights"
3301 From d_socket.U:
3302 This variable conditionally defines the "HAS_SCM_RIGHTS" symbol,
3304 which indicates that the "SCM_RIGHTS" is available. #ifdef is not
3305 enough because it may be an enum, glibc has been known to do this.
3306 "d_SCNfldbl"
3308 From longdblfio.U:
3309 This variable conditionally defines the PERL_PRIfldbl symbol, which
3311 indicates that stdio has a symbol to scan long doubles.
3312 "d_seekdir"
3314 From d_readdir.U:
3315 This variable conditionally defines "HAS_SEEKDIR" if seekdir() is
3317 available.
3318 "d_select"
3320 From d_select.U:
3321 This variable conditionally defines "HAS_SELECT" if select() is
3323 available to select active file descriptors. A <sys/time.h>
3324 inclusion may be necessary for the timeout field.
3325 "d_sem"
3327 From d_sem.U:
3328 This variable conditionally defines the "HAS_SEM" symbol, which
3330 indicates that the entire sem*(2) library is present.
3331 "d_semctl"
3333 From d_semctl.U:
3334 This variable conditionally defines the "HAS_SEMCTL" symbol, which
3336 indicates to the C program that the semctl() routine is available.
3337 "d_semctl_semid_ds"
3339 From d_union_semun.U:
3340 This variable conditionally defines "USE_SEMCTL_SEMID_DS", which
3342 indicates that struct semid_ds * is to be used for semctl
3343 "IPC_STAT".
3344 "d_semctl_semun"
3346 From d_union_semun.U:
3347 This variable conditionally defines "USE_SEMCTL_SEMUN", which
3349 indicates that union semun is to be used for semctl "IPC_STAT".
3350 "d_semget"
3352 From d_semget.U:
3353 This variable conditionally defines the "HAS_SEMGET" symbol, which
3355 indicates to the C program that the semget() routine is available.
3356 "d_semop"
3358 From d_semop.U:
3359 This variable conditionally defines the "HAS_SEMOP" symbol, which
3361 indicates to the C program that the semop() routine is available.
3362 "d_sendmsg"
3364 From d_sendmsg.U:
3365 This variable conditionally defines the "HAS_SENDMSG" symbol, which
3367 indicates to the C program that the sendmsg() routine is available.
3368 "d_setegid"
3370 From d_setegid.U:
3371 This variable conditionally defines the "HAS_SETEGID" symbol, which
3373 indicates to the C program that the setegid() routine is available
3374 to change the effective gid of the current program.
3375 "d_seteuid"
3377 From d_seteuid.U:
3378 This variable conditionally defines the "HAS_SETEUID" symbol, which
3380 indicates to the C program that the seteuid() routine is available
3381 to change the effective uid of the current program.
3382 "d_setgrent"
3384 From d_setgrent.U:
3385 This variable conditionally defines the "HAS_SETGRENT" symbol,
3387 which indicates to the C program that the setgrent() routine is
3388 available for initializing sequential access to the group database.
3389 "d_setgrent_r"
3391 From d_setgrent_r.U:
3392 This variable conditionally defines the "HAS_SETGRENT_R" symbol,
3394 which indicates to the C program that the setgrent_r() routine is
3395 available.
3396 "d_setgrps"
3398 From d_setgrps.U:
3399 This variable conditionally defines the "HAS_SETGROUPS" symbol,
3401 which indicates to the C program that the setgroups() routine is
3402 available to set the list of process groups.
3403 "d_sethent"
3405 From d_sethent.U:
3406 This variable conditionally defines "HAS_SETHOSTENT" if
3408 sethostent() is available.
3409 "d_sethostent_r"
3411 From d_sethostent_r.U:
3412 This variable conditionally defines the "HAS_SETHOSTENT_R" symbol,
3414 which indicates to the C program that the sethostent_r() routine is
3415 available.
3416 "d_setitimer"
3418 From d_setitimer.U:
3419 This variable conditionally defines the "HAS_SETITIMER" symbol,
3421 which indicates to the C program that the setitimer() routine is
3422 available.
3423 "d_setlinebuf"
3425 From d_setlnbuf.U:
3426 This variable conditionally defines the "HAS_SETLINEBUF" symbol,
3428 which indicates to the C program that the setlinebuf() routine is
3429 available to change stderr or stdout from block-buffered or
3430 unbuffered to a line-buffered mode.
3431 "d_setlocale"
3433 From d_setlocale.U:
3434 This variable conditionally defines "HAS_SETLOCALE" if setlocale()
3436 is available to handle locale-specific ctype implementations.
3437 "d_setlocale_accepts_any_locale_name"
3439 From d_setlocale.U:
3440 This variable conditionally defines
3442 "SETLOCALE_ACCEPTS_ANY_LOCALE_NAME" if setlocale() accepts any
3443 locale name.
3444 "d_setlocale_r"
3446 From d_setlocale_r.U:
3447 This variable conditionally defines the "HAS_SETLOCALE_R" symbol,
3449 which indicates to the C program that the setlocale_r() routine is
3450 available.
3451 "d_setnent"
3453 From d_setnent.U:
3454 This variable conditionally defines "HAS_SETNETENT" if setnetent()
3456 is available.
3457 "d_setnetent_r"
3459 From d_setnetent_r.U:
3460 This variable conditionally defines the "HAS_SETNETENT_R" symbol,
3462 which indicates to the C program that the setnetent_r() routine is
3463 available.
3464 "d_setpent"
3466 From d_setpent.U:
3467 This variable conditionally defines "HAS_SETPROTOENT" if
3469 setprotoent() is available.
3470 "d_setpgid"
3472 From d_setpgid.U:
3473 This variable conditionally defines the "HAS_SETPGID" symbol if the
3475 setpgid(pid, gpid) function is available to set process group "ID".
3476 "d_setpgrp"
3478 From d_setpgrp.U:
3479 This variable conditionally defines "HAS_SETPGRP" if setpgrp() is
3481 available to set the current process group.
3482 "d_setpgrp2"
3484 From d_setpgrp2.U:
3485 This variable conditionally defines the HAS_SETPGRP2 symbol, which
3487 indicates to the C program that the setpgrp2() (as in DG/"UX")
3488 routine is available to set the current process group.
3489 "d_setprior"
3491 From d_setprior.U:
3492 This variable conditionally defines "HAS_SETPRIORITY" if
3494 setpriority() is available to set a process's priority.
3495 "d_setproctitle"
3497 From d_setproctitle.U:
3498 This variable conditionally defines the "HAS_SETPROCTITLE" symbol,
3500 which indicates to the C program that the setproctitle() routine is
3501 available.
3502 "d_setprotoent_r"
3504 From d_setprotoent_r.U:
3505 This variable conditionally defines the "HAS_SETPROTOENT_R" symbol,
3507 which indicates to the C program that the setprotoent_r() routine
3508 is available.
3509 "d_setpwent"
3511 From d_setpwent.U:
3512 This variable conditionally defines the "HAS_SETPWENT" symbol,
3514 which indicates to the C program that the setpwent() routine is
3515 available for initializing sequential access to the passwd
3516 database.
3517 "d_setpwent_r"
3519 From d_setpwent_r.U:
3520 This variable conditionally defines the "HAS_SETPWENT_R" symbol,
3522 which indicates to the C program that the setpwent_r() routine is
3523 available.
3524 "d_setregid"
3526 From d_setregid.U:
3527 This variable conditionally defines "HAS_SETREGID" if setregid() is
3529 available to change the real and effective gid of the current
3530 process.
3531 "d_setresgid"
3533 From d_setregid.U:
3534 This variable conditionally defines "HAS_SETRESGID" if setresgid()
3536 is available to change the real, effective and saved gid of the
3537 current process.
3538 "d_setresuid"
3540 From d_setreuid.U:
3541 This variable conditionally defines "HAS_SETREUID" if setresuid()
3543 is available to change the real, effective and saved uid of the
3544 current process.
3545 "d_setreuid"
3547 From d_setreuid.U:
3548 This variable conditionally defines "HAS_SETREUID" if setreuid() is
3550 available to change the real and effective uid of the current
3551 process.
3552 "d_setrgid"
3554 From d_setrgid.U:
3555 This variable conditionally defines the "HAS_SETRGID" symbol, which
3557 indicates to the C program that the setrgid() routine is available
3558 to change the real gid of the current program.
3559 "d_setruid"
3561 From d_setruid.U:
3562 This variable conditionally defines the "HAS_SETRUID" symbol, which
3564 indicates to the C program that the setruid() routine is available
3565 to change the real uid of the current program.
3566 "d_setsent"
3568 From d_setsent.U:
3569 This variable conditionally defines "HAS_SETSERVENT" if
3571 setservent() is available.
3572 "d_setservent_r"
3574 From d_setservent_r.U:
3575 This variable conditionally defines the "HAS_SETSERVENT_R" symbol,
3577 which indicates to the C program that the setservent_r() routine is
3578 available.
3579 "d_setsid"
3581 From d_setsid.U:
3582 This variable conditionally defines "HAS_SETSID" if setsid() is
3584 available to set the process group "ID".
3585 "d_setvbuf"
3587 From d_setvbuf.U:
3588 This variable conditionally defines the "HAS_SETVBUF" symbol, which
3590 indicates to the C program that the setvbuf() routine is available
3591 to change buffering on an open stdio stream.
3592 "d_shm"
3594 From d_shm.U:
3595 This variable conditionally defines the "HAS_SHM" symbol, which
3597 indicates that the entire shm*(2) library is present.
3598 "d_shmat"
3600 From d_shmat.U:
3601 This variable conditionally defines the "HAS_SHMAT" symbol, which
3603 indicates to the C program that the shmat() routine is available.
3604 "d_shmatprototype"
3606 From d_shmat.U:
3607 This variable conditionally defines the "HAS_SHMAT_PROTOTYPE"
3609 symbol, which indicates that sys/shm.h has a prototype for shmat.
3610 "d_shmctl"
3612 From d_shmctl.U:
3613 This variable conditionally defines the "HAS_SHMCTL" symbol, which
3615 indicates to the C program that the shmctl() routine is available.
3616 "d_shmdt"
3618 From d_shmdt.U:
3619 This variable conditionally defines the "HAS_SHMDT" symbol, which
3621 indicates to the C program that the shmdt() routine is available.
3622 "d_shmget"
3624 From d_shmget.U:
3625 This variable conditionally defines the "HAS_SHMGET" symbol, which
3627 indicates to the C program that the shmget() routine is available.
3628 "d_sigaction"
3630 From d_sigaction.U:
3631 This variable conditionally defines the "HAS_SIGACTION" symbol,
3633 which indicates that the Vr4 sigaction() routine is available.
3634 "d_siginfo_si_addr"
3636 From d_siginfo_si.U:
3637 This variable conditionally defines the "HAS_SIGINFO_SI_ADDR"
3639 symbol, which indicates that the siginfo_t struct has the si_addr
3640 member.
3641 "d_siginfo_si_band"
3643 From d_siginfo_si.U:
3644 This variable conditionally defines the "HAS_SIGINFO_SI_BAND"
3646 symbol, which indicates that the siginfo_t struct has the si_band
3647 member.
3648 "d_siginfo_si_errno"
3650 From d_siginfo_si.U:
3651 This variable conditionally defines the "HAS_SIGINFO_SI_ERRNO"
3653 symbol, which indicates that the siginfo_t struct has the si_errno
3654 member.
3655 "d_siginfo_si_fd"
3657 From d_siginfo_si.U:
3658 This variable conditionally defines the "HAS_SIGINFO_SI_FD" symbol,
3660 which indicates that the siginfo_t struct has the si_fd member.
3661 "d_siginfo_si_pid"
3663 From d_siginfo_si.U:
3664 This variable conditionally defines the "HAS_SIGINFO_SI_PID"
3666 symbol, which indicates that the siginfo_t struct has the si_pid
3667 member.
3668 "d_siginfo_si_status"
3670 From d_siginfo_si.U:
3671 This variable conditionally defines the "HAS_SIGINFO_SI_STATUS"
3673 symbol, which indicates that the siginfo_t struct has the si_status
3674 member.
3675 "d_siginfo_si_uid"
3677 From d_siginfo_si.U:
3678 This variable conditionally defines the "HAS_SIGINFO_SI_UID"
3680 symbol, which indicates that the siginfo_t struct has the si_uid
3681 member.
3682 "d_siginfo_si_value"
3684 From d_siginfo_si.U:
3685 This variable conditionally defines the "HAS_SIGINFO_SI_VALUE"
3687 symbol, which indicates that the siginfo_t struct has the si_value
3688 member.
3689 "d_signbit"
3691 From d_signbit.U:
3692 This variable conditionally defines the "HAS_SIGNBIT" symbol, which
3694 indicates to the C program that the signbit() routine is available
3695 and safe to use with perl's intern "NV" type.
3696 "d_sigprocmask"
3698 From d_sigprocmask.U:
3699 This variable conditionally defines "HAS_SIGPROCMASK" if
3701 sigprocmask() is available to examine or change the signal mask of
3702 the calling process.
3703 "d_sigsetjmp"
3705 From d_sigsetjmp.U:
3706 This variable conditionally defines the "HAS_SIGSETJMP" symbol,
3708 which indicates that the sigsetjmp() routine is available to call
3709 setjmp() and optionally save the process's signal mask.
3710 "d_sin6_scope_id"
3712 From d_socket.U:
3713 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol,
3715 which indicates that a struct sockaddr_in6 structure has the
3716 sin6_scope_id member.
3717 "d_sitearch"
3719 From sitearch.U:
3720 This variable conditionally defines "SITEARCH" to hold the pathname
3722 of architecture-dependent library files for $package. If $sitearch
3723 is the same as $archlib, then this is set to undef.
3724 "d_snprintf"
3726 From d_snprintf.U:
3727 This variable conditionally defines the "HAS_SNPRINTF" symbol,
3729 which indicates to the C program that the snprintf () library
3730 function is available.
3731 "d_sockaddr_in6"
3733 From d_socket.U:
3734 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol,
3736 which indicates the availability of a struct sockaddr_in6.
3737 "d_sockaddr_sa_len"
3739 From d_socket.U:
3740 This variable conditionally defines the "HAS_SOCKADDR_SA_LEN"
3742 symbol, which indicates that a struct sockaddr structure has the
3743 sa_len member.
3744 "d_sockaddr_storage"
3746 From d_socket.U:
3747 This variable conditionally defines the "HAS_SOCKADDR_STORAGE"
3749 symbol, which indicates the availability of a struct
3750 sockaddr_storage.
3751 "d_sockatmark"
3753 From d_sockatmark.U:
3754 This variable conditionally defines the "HAS_SOCKATMARK" symbol,
3756 which indicates to the C program that the sockatmark() routine is
3757 available.
3758 "d_sockatmarkproto"
3760 From d_sockatmarkproto.U:
3761 This variable conditionally defines the "HAS_SOCKATMARK_PROTO"
3763 symbol, which indicates to the C program that the system provides a
3764 prototype for the sockatmark() function. Otherwise, it is up to
3765 the program to supply one.
3766 "d_socket"
3768 From d_socket.U:
3769 This variable conditionally defines "HAS_SOCKET", which indicates
3771 that the "BSD" socket interface is supported.
3772 "d_socklen_t"
3774 From d_socklen_t.U:
3775 This symbol will be defined if the C compiler supports socklen_t.
3777 "d_sockpair"
3779 From d_socket.U:
3780 This variable conditionally defines the "HAS_SOCKETPAIR" symbol,
3782 which indicates that the "BSD" socketpair() is supported.
3783 "d_socks5_init"
3785 From d_socks5_init.U:
3786 This variable conditionally defines the HAS_SOCKS5_INIT symbol,
3788 which indicates to the C program that the socks5_init() routine is
3789 available.
3790 "d_sqrtl"
3792 From d_sqrtl.U:
3793 This variable conditionally defines the "HAS_SQRTL" symbol, which
3795 indicates to the C program that the sqrtl() routine is available.
3796 "d_srand48_r"
3798 From d_srand48_r.U:
3799 This variable conditionally defines the HAS_SRAND48_R symbol, which
3801 indicates to the C program that the srand48_r() routine is
3802 available.
3803 "d_srandom_r"
3805 From d_srandom_r.U:
3806 This variable conditionally defines the "HAS_SRANDOM_R" symbol,
3808 which indicates to the C program that the srandom_r() routine is
3809 available.
3810 "d_sresgproto"
3812 From d_sresgproto.U:
3813 This variable conditionally defines the "HAS_SETRESGID_PROTO"
3815 symbol, which indicates to the C program that the system provides a
3816 prototype for the setresgid() function. Otherwise, it is up to the
3817 program to supply one.
3818 "d_sresuproto"
3820 From d_sresuproto.U:
3821 This variable conditionally defines the "HAS_SETRESUID_PROTO"
3823 symbol, which indicates to the C program that the system provides a
3824 prototype for the setresuid() function. Otherwise, it is up to the
3825 program to supply one.
3826 "d_stat"
3828 From d_stat.U:
3829 This variable conditionally defines "HAS_STAT" if stat() is
3831 available to get file status.
3832 "d_statblks"
3834 From d_statblks.U:
3835 This variable conditionally defines "USE_STAT_BLOCKS" if this
3837 system has a stat structure declaring st_blksize and st_blocks.
3838 "d_statfs_f_flags"
3840 From d_statfs_f_flags.U:
3841 This variable conditionally defines the "HAS_STRUCT_STATFS_F_FLAGS"
3843 symbol, which indicates to struct statfs from has f_flags member.
3844 This kind of struct statfs is coming from sys/mount.h ("BSD"), not
3845 from sys/statfs.h ("SYSV").
3846 "d_statfs_s"
3848 From d_statfs_s.U:
3849 This variable conditionally defines the "HAS_STRUCT_STATFS" symbol,
3851 which indicates that the struct statfs is supported.
3852 "d_static_inline"
3854 From d_static_inline.U:
3855 This variable conditionally defines the "HAS_STATIC_INLINE" symbol,
3857 which indicates that the C compiler supports C99-style static
3858 inline. That is, the function can't be called from another
3859 translation unit.
3860 "d_statvfs"
3862 From d_statvfs.U:
3863 This variable conditionally defines the "HAS_STATVFS" symbol, which
3865 indicates to the C program that the statvfs() routine is available.
3866 "d_stdio_cnt_lval"
3868 From d_stdstdio.U:
3869 This variable conditionally defines "STDIO_CNT_LVALUE" if the
3871 "FILE_cnt" macro can be used as an lvalue.
3872 "d_stdio_ptr_lval"
3874 From d_stdstdio.U:
3875 This variable conditionally defines "STDIO_PTR_LVALUE" if the
3877 "FILE_ptr" macro can be used as an lvalue.
3878 "d_stdio_ptr_lval_nochange_cnt"
3880 From d_stdstdio.U:
3881 This symbol is defined if using the "FILE_ptr" macro as an lvalue
3883 to increase the pointer by n leaves File_cnt(fp) unchanged.
3884 "d_stdio_ptr_lval_sets_cnt"
3886 From d_stdstdio.U:
3887 This symbol is defined if using the "FILE_ptr" macro as an lvalue
3889 to increase the pointer by n has the side effect of decreasing the
3890 value of File_cnt(fp) by n.
3891 "d_stdio_stream_array"
3893 From stdio_streams.U:
3894 This variable tells whether there is an array holding the stdio
3896 streams.
3897 "d_stdiobase"
3899 From d_stdstdio.U:
3900 This variable conditionally defines "USE_STDIO_BASE" if this system
3902 has a "FILE" structure declaring a usable _base field (or
3903 equivalent) in stdio.h.
3904 "d_stdstdio"
3906 From d_stdstdio.U:
3907 This variable conditionally defines "USE_STDIO_PTR" if this system
3909 has a "FILE" structure declaring usable _ptr and _cnt fields (or
3910 equivalent) in stdio.h.
3911 "d_strcoll"
3913 From d_strcoll.U:
3914 This variable conditionally defines "HAS_STRCOLL" if strcoll() is
3916 available to compare strings using collating information.
3917 "d_strerror_l"
3919 From d_strerror_l.U:
3920 This variable conditionally defines the "HAS_STRERROR_L" symbol,
3922 which indicates to the C program that the strerror_l() routine is
3923 available to return the error message for a given errno value in a
3924 particular locale (identified by a locale_t object).
3925 "d_strerror_r"
3927 From d_strerror_r.U:
3928 This variable conditionally defines the "HAS_STRERROR_R" symbol,
3930 which indicates to the C program that the strerror_r() routine is
3931 available.
3932 "d_strftime"
3934 From d_strftime.U:
3935 This variable conditionally defines the "HAS_STRFTIME" symbol,
3937 which indicates to the C program that the strftime() routine is
3938 available.
3939 "d_strlcat"
3941 From d_strlcat.U:
3942 This variable conditionally defines the "HAS_STRLCAT" symbol, which
3944 indicates to the C program that the strlcat () routine is
3945 available.
3946 "d_strlcpy"
3948 From d_strlcpy.U:
3949 This variable conditionally defines the "HAS_STRLCPY" symbol, which
3951 indicates to the C program that the strlcpy () routine is
3952 available.
3953 "d_strnlen"
3955 From d_strnlen.U:
3956 This variable conditionally defines the "HAS_STRNLEN" symbol, which
3958 indicates to the C program that the strnlen () routine is
3959 available.
3960 "d_strtod"
3962 From d_strtod.U:
3963 This variable conditionally defines the "HAS_STRTOD" symbol, which
3965 indicates to the C program that the strtod() routine is available
3966 to provide better numeric string conversion than atof().
3967 "d_strtod_l"
3969 From d_strtod_l.U:
3970 This variable conditionally defines the "HAS_STRTOD_L" symbol,
3972 which indicates to the C program that the strtod_l() routine is
3973 available.
3974 "d_strtol"
3976 From d_strtol.U:
3977 This variable conditionally defines the "HAS_STRTOL" symbol, which
3979 indicates to the C program that the strtol() routine is available
3980 to provide better numeric string conversion than atoi() and
3981 friends.
3982 "d_strtold"
3984 From d_strtold.U:
3985 This variable conditionally defines the "HAS_STRTOLD" symbol, which
3987 indicates to the C program that the strtold() routine is available.
3988 "d_strtold_l"
3990 From d_strtold_l.U:
3991 This variable conditionally defines the "HAS_STRTOLD_L" symbol,
3993 which indicates to the C program that the strtold_l() routine is
3994 available.
3995 "d_strtoll"
3997 From d_strtoll.U:
3998 This variable conditionally defines the "HAS_STRTOLL" symbol, which
4000 indicates to the C program that the strtoll() routine is available.
4001 "d_strtoq"
4003 From d_strtoq.U:
4004 This variable conditionally defines the "HAS_STRTOQ" symbol, which
4006 indicates to the C program that the strtoq() routine is available.
4007 "d_strtoul"
4009 From d_strtoul.U:
4010 This variable conditionally defines the "HAS_STRTOUL" symbol, which
4012 indicates to the C program that the strtoul() routine is available
4013 to provide conversion of strings to unsigned long.
4014 "d_strtoull"
4016 From d_strtoull.U:
4017 This variable conditionally defines the "HAS_STRTOULL" symbol,
4019 which indicates to the C program that the strtoull() routine is
4020 available.
4021 "d_strtouq"
4023 From d_strtouq.U:
4024 This variable conditionally defines the "HAS_STRTOUQ" symbol, which
4026 indicates to the C program that the strtouq() routine is available.
4027 "d_strxfrm"
4029 From d_strxfrm.U:
4030 This variable conditionally defines "HAS_STRXFRM" if strxfrm() is
4032 available to transform strings.
4033 "d_suidsafe"
4035 From d_dosuid.U:
4036 This variable conditionally defines "SETUID_SCRIPTS_ARE_SECURE_NOW"
4038 if setuid scripts can be secure. This test looks in /dev/fd/.
4039 "d_symlink"
4041 From d_symlink.U:
4042 This variable conditionally defines the "HAS_SYMLINK" symbol, which
4044 indicates to the C program that the symlink() routine is available
4045 to create symbolic links.
4046 "d_syscall"
4048 From d_syscall.U:
4049 This variable conditionally defines "HAS_SYSCALL" if syscall() is
4051 available call arbitrary system calls.
4052 "d_syscallproto"
4054 From d_syscallproto.U:
4055 This variable conditionally defines the "HAS_SYSCALL_PROTO" symbol,
4057 which indicates to the C program that the system provides a
4058 prototype for the syscall() function. Otherwise, it is up to the
4059 program to supply one.
4060 "d_sysconf"
4062 From d_sysconf.U:
4063 This variable conditionally defines the "HAS_SYSCONF" symbol, which
4065 indicates to the C program that the sysconf() routine is available
4066 to determine system related limits and options.
4067 "d_sysernlst"
4069 From d_strerror.U:
4070 This variable conditionally defines "HAS_SYS_ERRNOLIST" if
4072 sys_errnolist[] is available to translate error numbers to the
4073 symbolic name.
4074 "d_syserrlst"
4076 From d_strerror.U:
4077 This variable conditionally defines "HAS_SYS_ERRLIST" if
4079 sys_errlist[] is available to translate error numbers to strings.
4080 "d_system"
4082 From d_system.U:
4083 This variable conditionally defines "HAS_SYSTEM" if system() is
4085 available to issue a shell command.
4086 "d_tcgetpgrp"
4088 From d_tcgtpgrp.U:
4089 This variable conditionally defines the "HAS_TCGETPGRP" symbol,
4091 which indicates to the C program that the tcgetpgrp() routine is
4092 available. to get foreground process group "ID".
4093 "d_tcsetpgrp"
4095 From d_tcstpgrp.U:
4096 This variable conditionally defines the "HAS_TCSETPGRP" symbol,
4098 which indicates to the C program that the tcsetpgrp() routine is
4099 available to set foreground process group "ID".
4100 "d_telldir"
4102 From d_readdir.U:
4103 This variable conditionally defines "HAS_TELLDIR" if telldir() is
4105 available.
4106 "d_telldirproto"
4108 From d_telldirproto.U:
4109 This variable conditionally defines the "HAS_TELLDIR_PROTO" symbol,
4111 which indicates to the C program that the system provides a
4112 prototype for the telldir() function. Otherwise, it is up to the
4113 program to supply one.
4114 "d_tgamma"
4116 From d_tgamma.U:
4117 This variable conditionally defines the "HAS_TGAMMA" symbol, which
4119 indicates to the C program that the tgamma() routine is available
4120 for the gamma function. See also d_lgamma.
4121 "d_thread_safe_nl_langinfo_l"
4123 From d_nl_langinfo_l.U:
4124 This variable contains the eventual value of the
4126 "HAS_THREAD_SAFE_NL_LANGINFO_L" symbol, which indicates if the
4127 nl_langinfo_l() function exists and is thread-safe.
4128 "d_time"
4130 From d_time.U:
4131 This variable conditionally defines the "HAS_TIME" symbol, which
4133 indicates that the time() routine exists. The time() routine is
4134 normally provided on "UNIX" systems.
4135 "d_timegm"
4137 From d_timegm.U:
4138 This variable conditionally defines the "HAS_TIMEGM" symbol, which
4140 indicates to the C program that the timegm () routine is available.
4141 "d_times"
4143 From d_times.U:
4144 This variable conditionally defines the "HAS_TIMES" symbol, which
4146 indicates that the times() routine exists. The times() routine is
4147 normally provided on "UNIX" systems. You may have to include
4148 <sys/times.h>.
4149 "d_tm_tm_gmtoff"
4151 From i_time.U:
4152 This variable conditionally defines "HAS_TM_TM_GMTOFF", which
4154 indicates to the C program that the struct tm has the tm_gmtoff
4155 field.
4156 "d_tm_tm_zone"
4158 From i_time.U:
4159 This variable conditionally defines "HAS_TM_TM_ZONE", which
4161 indicates to the C program that the struct tm has the tm_zone
4162 field.
4163 "d_tmpnam_r"
4165 From d_tmpnam_r.U:
4166 This variable conditionally defines the "HAS_TMPNAM_R" symbol,
4168 which indicates to the C program that the tmpnam_r() routine is
4169 available.
4170 "d_towlower"
4172 From d_towlower.U:
4173 This variable conditionally defines the "HAS_TOWLOWER" symbol,
4175 which indicates to the C program that the towlower() routine is
4176 available.
4177 "d_towupper"
4179 From d_towupper.U:
4180 This variable conditionally defines the "HAS_TOWUPPER" symbol,
4182 which indicates to the C program that the towupper() routine is
4183 available.
4184 "d_trunc"
4186 From d_trunc.U:
4187 This variable conditionally defines the "HAS_TRUNC" symbol, which
4189 indicates to the C program that the trunc() routine is available to
4190 round doubles towards zero.
4191 "d_truncate"
4193 From d_truncate.U:
4194 This variable conditionally defines "HAS_TRUNCATE" if truncate() is
4196 available to truncate files.
4197 "d_truncl"
4199 From d_truncl.U:
4200 This variable conditionally defines the "HAS_TRUNCL" symbol, which
4202 indicates to the C program that the truncl() routine is available
4203 to round long doubles towards zero. If copysignl is also present,
4204 we can emulate modfl.
4205 "d_ttyname_r"
4207 From d_ttyname_r.U:
4208 This variable conditionally defines the "HAS_TTYNAME_R" symbol,
4210 which indicates to the C program that the ttyname_r() routine is
4211 available.
4212 "d_tzname"
4214 From d_tzname.U:
4215 This variable conditionally defines "HAS_TZNAME" if tzname[] is
4217 available to access timezone names.
4218 "d_u32align"
4220 From d_u32align.U:
4221 This variable tells whether you must access character data through
4223 U32-aligned pointers.
4224 "d_ualarm"
4226 From d_ualarm.U:
4227 This variable conditionally defines the "HAS_UALARM" symbol, which
4229 indicates to the C program that the ualarm() routine is available.
4230 "d_umask"
4232 From d_umask.U:
4233 This variable conditionally defines the "HAS_UMASK" symbol, which
4235 indicates to the C program that the umask() routine is available.
4236 to set and get the value of the file creation mask.
4237 "d_uname"
4239 From d_gethname.U:
4240 This variable conditionally defines the "HAS_UNAME" symbol, which
4242 indicates to the C program that the uname() routine may be used to
4243 derive the host name.
4244 "d_union_semun"
4246 From d_union_semun.U:
4247 This variable conditionally defines "HAS_UNION_SEMUN" if the union
4249 semun is defined by including <sys/sem.h>.
4250 "d_unlinkat"
4252 From d_fsat.U:
4253 This variable conditionally defines the "HAS_UNLINKAT" symbol,
4255 which indicates the "POSIX" unlinkat() function isavailable.
4256 "d_unordered"
4258 From d_unordered.U:
4259 This variable conditionally defines the "HAS_UNORDERED" symbol,
4261 which indicates to the C program that the unordered() routine is
4262 available.
4263 "d_unsetenv"
4265 From d_unsetenv.U:
4266 This variable conditionally defines the "HAS_UNSETENV" symbol,
4268 which indicates to the C program that the unsetenv () routine is
4269 available.
4270 "d_uselocale"
4272 From d_newlocale.U:
4273 This variable conditionally defines the "HAS_USELOCALE" symbol,
4275 which indicates to the C program that the uselocale() routine is
4276 available to set the current locale for the calling thread.
4277 "d_usleep"
4279 From d_usleep.U:
4280 This variable conditionally defines "HAS_USLEEP" if usleep() is
4282 available to do high granularity sleeps.
4283 "d_usleepproto"
4285 From d_usleepproto.U:
4286 This variable conditionally defines the "HAS_USLEEP_PROTO" symbol,
4288 which indicates to the C program that the system provides a
4289 prototype for the usleep() function. Otherwise, it is up to the
4290 program to supply one.
4291 "d_ustat"
4293 From d_ustat.U:
4294 This variable conditionally defines "HAS_USTAT" if ustat() is
4296 available to query file system statistics by dev_t.
4297 "d_vendorarch"
4299 From vendorarch.U:
4300 This variable conditionally defined "PERL_VENDORARCH".
4302 "d_vendorbin"
4304 From vendorbin.U:
4305 This variable conditionally defines "PERL_VENDORBIN".
4307 "d_vendorlib"
4309 From vendorlib.U:
4310 This variable conditionally defines "PERL_VENDORLIB".
4312 "d_vendorscript"
4314 From vendorscript.U:
4315 This variable conditionally defines "PERL_VENDORSCRIPT".
4317 "d_vfork"
4319 From d_vfork.U:
4320 This variable conditionally defines the "HAS_VFORK" symbol, which
4322 indicates the vfork() routine is available.
4323 "d_void_closedir"
4325 From d_closedir.U:
4326 This variable conditionally defines "VOID_CLOSEDIR" if closedir()
4328 does not return a value.
4329 "d_voidsig"
4331 From d_voidsig.U:
4332 This variable conditionally defines "VOIDSIG" if this system
4334 declares "void (*signal(...))()" in signal.h. The old way was to
4335 declare it as "int (*signal(...))()".
4336 "d_voidtty"
4338 From i_sysioctl.U:
4339 This variable conditionally defines "USE_IOCNOTTY" to indicate that
4341 the ioctl() call with "TIOCNOTTY" should be used to void tty
4342 association. Otherwise (on "USG" probably), it is enough to close
4343 the standard file descriptors and do a setpgrp().
4344 "d_vsnprintf"
4346 From d_snprintf.U:
4347 This variable conditionally defines the "HAS_VSNPRINTF" symbol,
4349 which indicates to the C program that the vsnprintf () library
4350 function is available.
4351 "d_wait4"
4353 From d_wait4.U:
4354 This variable conditionally defines the HAS_WAIT4 symbol, which
4356 indicates the wait4() routine is available.
4357 "d_waitpid"
4359 From d_waitpid.U:
4360 This variable conditionally defines "HAS_WAITPID" if waitpid() is
4362 available to wait for child process.
4363 "d_wcrtomb"
4365 From d_wcrtomb.U:
4366 This variable conditionally defines the "HAS_WCRTOMB" symbol if the
4368 wcrtomb() routine is available to be used to convert a wide
4369 character into a multi-byte character.
4370 "d_wcscmp"
4372 From d_wcscmp.U:
4373 This variable conditionally defines the "HAS_WCSCMP" symbol if the
4375 wcscmp() routine is available and can be used to compare wide
4376 character strings.
4377 "d_wcstombs"
4379 From d_wcstombs.U:
4380 This variable conditionally defines the "HAS_WCSTOMBS" symbol,
4382 which indicates to the C program that the wcstombs() routine is
4383 available to convert wide character strings to multibyte strings.
4384 "d_wcsxfrm"
4386 From d_wcsxfrm.U:
4387 This variable conditionally defines the "HAS_WCSXFRM" symbol if the
4389 wcsxfrm() routine is available and can be used to compare wide
4390 character strings.
4391 "d_wctomb"
4393 From d_wctomb.U:
4394 This variable conditionally defines the "HAS_WCTOMB" symbol, which
4396 indicates to the C program that the wctomb() routine is available
4397 to convert a wide character to a multibyte.
4398 "d_writev"
4400 From d_writev.U:
4401 This variable conditionally defines the "HAS_WRITEV" symbol, which
4403 indicates to the C program that the writev() routine is available.
4404 "d_xenix"
4406 From Guess.U:
4407 This variable conditionally defines the symbol "XENIX", which
4409 alerts the C program that it runs under Xenix.
4410 "date"
4412 From Loc.U:
4413 This variable is used internally by Configure to determine the full
4415 pathname (if any) of the date program. After Configure runs, the
4416 value is reset to a plain "date" and is not useful.
4417 "db_hashtype"
4419 From i_db.U:
4420 This variable contains the type of the hash structure element in
4422 the <db.h> header file. In older versions of "DB", it was int,
4423 while in newer ones it is u_int32_t.
4424 "db_prefixtype"
4426 From i_db.U:
4427 This variable contains the type of the prefix structure element in
4429 the <db.h> header file. In older versions of "DB", it was int,
4430 while in newer ones it is size_t.
4431 "db_version_major"
4433 From i_db.U:
4434 This variable contains the major version number of Berkeley "DB"
4436 found in the <db.h> header file.
4437 "db_version_minor"
4439 From i_db.U:
4440 This variable contains the minor version number of Berkeley "DB"
4442 found in the <db.h> header file. For "DB" version 1 this is always
4443 0.
4444 "db_version_patch"
4446 From i_db.U:
4447 This variable contains the patch version number of Berkeley "DB"
4449 found in the <db.h> header file. For "DB" version 1 this is always
4450 0.
4451 "default_inc_excludes_dot"
4453 From defaultincdot.U:
4454 When defined, remove the legacy . from @"INC"
4456 "direntrytype"
4458 From i_dirent.U:
4459 This symbol is set to "struct direct" or "struct dirent" depending
4461 on whether dirent is available or not. You should use this pseudo
4462 type to portably declare your directory entries.
4463 "dlext"
4465 From dlext.U:
4466 This variable contains the extension that is to be used for the
4468 dynamically loaded modules that perl generates.
4469 "dlsrc"
4471 From dlsrc.U:
4472 This variable contains the name of the dynamic loading file that
4474 will be used with the package.
4475 "doubleinfbytes"
4477 From infnan.U:
4478 This variable contains comma-separated list of hexadecimal bytes
4480 for the double precision infinity.
4481 "doublekind"
4483 From longdblfio.U:
4484 This variable, if defined, encodes the type of a double: 1 = "IEEE"
4486 754 32-bit little endian, 2 = "IEEE" 754 32-bit big endian, 3 =
4487 "IEEE" 754 64-bit little endian, 4 = "IEEE" 754 64-bit big endian,
4488 5 = "IEEE" 754 128-bit little endian, 6 = "IEEE" 754 128-bit big
4489 endian, 7 = "IEEE" 754 64-bit mixed endian le-be, 8 = "IEEE" 754
4490 64-bit mixed endian be-le, 9 = "VAX" 32bit little endian F float
4491 format 10 = "VAX" 64bit little endian D float format 11 = "VAX"
4492 64bit little endian G float format 12 = "IBM" 32bit format 13 =
4493 "IBM" 64bit format 14 = Cray 64bit format -1 = unknown format.
4494 "doublemantbits"
4496 From mantbits.U:
4497 This symbol, if defined, tells how many mantissa bits there are in
4499 double precision floating point format. Note that this is usually
4500 "DBL_MANT_DIG" minus one, since with the standard "IEEE" 754
4501 formats "DBL_MANT_DIG" includes the implicit bit which doesn't
4502 really exist.
4503 "doublenanbytes"
4505 From infnan.U:
4506 This variable contains comma-separated list of hexadecimal bytes
4508 for the double precision not-a-number.
4509 "doublesize"
4511 From doublesize.U:
4512 This variable contains the value of the "DOUBLESIZE" symbol, which
4514 indicates to the C program how many bytes there are in a double.
4515 "drand01"
4517 From randfunc.U:
4518 Indicates the macro to be used to generate normalized random
4520 numbers. Uses randfunc, often divided by (double) (((unsigned
4521 long) 1 << randbits)) in order to normalize the result. In C
4522 programs, the macro "Drand01" is mapped to drand01.
4523 "drand48_r_proto"
4525 From d_drand48_r.U:
4526 This variable encodes the prototype of drand48_r. It is zero if
4528 d_drand48_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
4529 of reentr.h if d_drand48_r is defined.
4530 "dtrace"
4532 From usedtrace.U:
4533 This variable holds the location of the dtrace executable.
4535 "dtraceobject"
4537 From dtraceobject.U:
4538 Whether we need to build an object file with the dtrace tool.
4540 "dtracexnolibs"
4542 From dtraceobject.U:
4543 Whether dtrace accepts -xnolibs. If available we call dtrace -h
4545 and dtrace -G with -xnolibs to allow dtrace to run in a jail on
4546 FreeBSD.
4547 "dynamic_ext"
4549 From Extensions.U:
4550 This variable holds a list of "XS" extension files we want to link
4552 dynamically into the package. It is used by Makefile.
4553 e
4555 "eagain"
4556 From nblock_io.U:
4557 This variable bears the symbolic errno code set by read() when no
4559 data is present on the file and non-blocking I/O was enabled
4560 (otherwise, read() blocks naturally).
4561 "ebcdic"
4563 From ebcdic.U:
4564 This variable conditionally defines "EBCDIC" if this system uses
4566 "EBCDIC" encoding.
4567 "echo"
4569 From Loc.U:
4570 This variable is used internally by Configure to determine the full
4572 pathname (if any) of the echo program. After Configure runs, the
4573 value is reset to a plain "echo" and is not useful.
4574 "egrep"
4576 From Loc.U:
4577 This variable is used internally by Configure to determine the full
4579 pathname (if any) of the egrep program. After Configure runs, the
4580 value is reset to a plain "egrep" and is not useful.
4581 "emacs"
4583 From Loc.U:
4584 This variable is defined but not used by Configure. The value is
4586 the empty string and is not useful.
4587 "endgrent_r_proto"
4589 From d_endgrent_r.U:
4590 This variable encodes the prototype of endgrent_r. It is zero if
4592 d_endgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4593 macros of reentr.h if d_endgrent_r is defined.
4594 "endhostent_r_proto"
4596 From d_endhostent_r.U:
4597 This variable encodes the prototype of endhostent_r. It is zero if
4599 d_endhostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4600 macros of reentr.h if d_endhostent_r is defined.
4601 "endnetent_r_proto"
4603 From d_endnetent_r.U:
4604 This variable encodes the prototype of endnetent_r. It is zero if
4606 d_endnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4607 macros of reentr.h if d_endnetent_r is defined.
4608 "endprotoent_r_proto"
4610 From d_endprotoent_r.U:
4611 This variable encodes the prototype of endprotoent_r. It is zero
4613 if d_endprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4614 macros of reentr.h if d_endprotoent_r is defined.
4615 "endpwent_r_proto"
4617 From d_endpwent_r.U:
4618 This variable encodes the prototype of endpwent_r. It is zero if
4620 d_endpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4621 macros of reentr.h if d_endpwent_r is defined.
4622 "endservent_r_proto"
4624 From d_endservent_r.U:
4625 This variable encodes the prototype of endservent_r. It is zero if
4627 d_endservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4628 macros of reentr.h if d_endservent_r is defined.
4629 "eunicefix"
4631 From Init.U:
4632 When running under Eunice this variable contains a command which
4634 will convert a shell script to the proper form of text file for it
4635 to be executable by the shell. On other systems it is a no-op.
4636 "exe_ext"
4638 From Unix.U:
4639 This is an old synonym for _exe.
4641 "expr"
4643 From Loc.U:
4644 This variable is used internally by Configure to determine the full
4646 pathname (if any) of the expr program. After Configure runs, the
4647 value is reset to a plain "expr" and is not useful.
4648 "extensions"
4650 From Extensions.U:
4651 This variable holds a list of all extension files (both "XS" and
4653 non-xs) installed with the package. It is propagated to Config.pm
4654 and is typically used to test whether a particular extension is
4655 available.
4656 "extern_C"
4658 From Csym.U:
4659 "ANSI" C requires "extern" where C++ requires 'extern "C"'. This
4661 variable can be used in Configure to do the right thing.
4662 "extras"
4664 From Extras.U:
4665 This variable holds a list of extra modules to install.
4667 f
4669 "fflushall"
4670 From fflushall.U:
4671 This symbol, if defined, tells that to flush all pending stdio
4673 output one must loop through all the stdio file handles stored in
4674 an array and fflush them. Note that if fflushNULL is defined,
4675 fflushall will not even be probed for and will be left undefined.
4676 "fflushNULL"
4678 From fflushall.U:
4679 This symbol, if defined, tells that fflush("NULL") correctly
4681 flushes all pending stdio output without side effects. In
4682 particular, on some platforms calling fflush("NULL") *still*
4683 corrupts "STDIN" if it is a pipe.
4684 "find"
4686 From Loc.U:
4687 This variable is defined but not used by Configure. The value is
4689 the empty string and is not useful.
4690 "firstmakefile"
4692 From Unix.U:
4693 This variable defines the first file searched by make. On unix, it
4695 is makefile (then Makefile). On case-insensitive systems, it might
4696 be something else. This is only used to deal with convoluted make
4697 depend tricks.
4698 "flex"
4700 From Loc.U:
4701 This variable is defined but not used by Configure. The value is
4703 the empty string and is not useful.
4704 "fpossize"
4706 From fpossize.U:
4707 This variable contains the size of a fpostype in bytes.
4709 "fpostype"
4711 From fpostype.U:
4712 This variable defines Fpos_t to be something like fpos_t, long,
4714 uint, or whatever type is used to declare file positions in libc.
4715 "freetype"
4717 From mallocsrc.U:
4718 This variable contains the return type of free(). It is usually
4720 void, but occasionally int.
4721 "from"
4723 From Cross.U:
4724 This variable contains the command used by Configure to copy files
4726 from the target host. Useful and available only during Perl build.
4727 The string ":" if not cross-compiling.
4728 "full_ar"
4730 From Loc_ar.U:
4731 This variable contains the full pathname to "ar", whether or not
4733 the user has specified "portability". This is only used in the
4734 Makefile.SH.
4735 "full_csh"
4737 From d_csh.U:
4738 This variable contains the full pathname to "csh", whether or not
4740 the user has specified "portability". This is only used in the
4741 compiled C program, and we assume that all systems which can share
4742 this executable will have the same full pathname to csh.
4743 "full_sed"
4745 From Loc_sed.U:
4746 This variable contains the full pathname to "sed", whether or not
4748 the user has specified "portability". This is only used in the
4749 compiled C program, and we assume that all systems which can share
4750 this executable will have the same full pathname to sed.
4751 g
4753 "gccansipedantic"
4754 From gccvers.U:
4755 If "GNU" cc (gcc) is used, this variable will enable (if set) the
4757 -ansi and -pedantic ccflags for building core files (through cflags
4758 script). (See Porting/pumpkin.pod for full description).
4759 "gccosandvers"
4761 From gccvers.U:
4762 If "GNU" cc (gcc) is used, this variable holds the operating system
4764 and version used to compile gcc. It is set to '' if not gcc, or if
4765 nothing useful can be parsed as the os version.
4766 "gccversion"
4768 From gccvers.U:
4769 If "GNU" cc (gcc) is used, this variable holds 1 or 2 to indicate
4771 whether the compiler is version 1 or 2. This is used in setting
4772 some of the default cflags. It is set to '' if not gcc.
4773 "getgrent_r_proto"
4775 From d_getgrent_r.U:
4776 This variable encodes the prototype of getgrent_r. It is zero if
4778 d_getgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4779 macros of reentr.h if d_getgrent_r is defined.
4780 "getgrgid_r_proto"
4782 From d_getgrgid_r.U:
4783 This variable encodes the prototype of getgrgid_r. It is zero if
4785 d_getgrgid_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4786 macros of reentr.h if d_getgrgid_r is defined.
4787 "getgrnam_r_proto"
4789 From d_getgrnam_r.U:
4790 This variable encodes the prototype of getgrnam_r. It is zero if
4792 d_getgrnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4793 macros of reentr.h if d_getgrnam_r is defined.
4794 "gethostbyaddr_r_proto"
4796 From d_gethostbyaddr_r.U:
4797 This variable encodes the prototype of gethostbyaddr_r. It is zero
4799 if d_gethostbyaddr_r is undef, and one of the
4800 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_gethostbyaddr_r is
4801 defined.
4802 "gethostbyname_r_proto"
4804 From d_gethostbyname_r.U:
4805 This variable encodes the prototype of gethostbyname_r. It is zero
4807 if d_gethostbyname_r is undef, and one of the
4808 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_gethostbyname_r is
4809 defined.
4810 "gethostent_r_proto"
4812 From d_gethostent_r.U:
4813 This variable encodes the prototype of gethostent_r. It is zero if
4815 d_gethostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4816 macros of reentr.h if d_gethostent_r is defined.
4817 "getlogin_r_proto"
4819 From d_getlogin_r.U:
4820 This variable encodes the prototype of getlogin_r. It is zero if
4822 d_getlogin_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4823 macros of reentr.h if d_getlogin_r is defined.
4824 "getnetbyaddr_r_proto"
4826 From d_getnetbyaddr_r.U:
4827 This variable encodes the prototype of getnetbyaddr_r. It is zero
4829 if d_getnetbyaddr_r is undef, and one of the
4830 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getnetbyaddr_r is
4831 defined.
4832 "getnetbyname_r_proto"
4834 From d_getnetbyname_r.U:
4835 This variable encodes the prototype of getnetbyname_r. It is zero
4837 if d_getnetbyname_r is undef, and one of the
4838 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getnetbyname_r is
4839 defined.
4840 "getnetent_r_proto"
4842 From d_getnetent_r.U:
4843 This variable encodes the prototype of getnetent_r. It is zero if
4845 d_getnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4846 macros of reentr.h if d_getnetent_r is defined.
4847 "getprotobyname_r_proto"
4849 From d_getprotobyname_r.U:
4850 This variable encodes the prototype of getprotobyname_r. It is
4852 zero if d_getprotobyname_r is undef, and one of the
4853 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getprotobyname_r is
4854 defined.
4855 "getprotobynumber_r_proto"
4857 From d_getprotobynumber_r.U:
4858 This variable encodes the prototype of getprotobynumber_r. It is
4860 zero if d_getprotobynumber_r is undef, and one of the
4861 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getprotobynumber_r
4862 is defined.
4863 "getprotoent_r_proto"
4865 From d_getprotoent_r.U:
4866 This variable encodes the prototype of getprotoent_r. It is zero
4868 if d_getprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4869 macros of reentr.h if d_getprotoent_r is defined.
4870 "getpwent_r_proto"
4872 From d_getpwent_r.U:
4873 This variable encodes the prototype of getpwent_r. It is zero if
4875 d_getpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4876 macros of reentr.h if d_getpwent_r is defined.
4877 "getpwnam_r_proto"
4879 From d_getpwnam_r.U:
4880 This variable encodes the prototype of getpwnam_r. It is zero if
4882 d_getpwnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4883 macros of reentr.h if d_getpwnam_r is defined.
4884 "getpwuid_r_proto"
4886 From d_getpwuid_r.U:
4887 This variable encodes the prototype of getpwuid_r. It is zero if
4889 d_getpwuid_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4890 macros of reentr.h if d_getpwuid_r is defined.
4891 "getservbyname_r_proto"
4893 From d_getservbyname_r.U:
4894 This variable encodes the prototype of getservbyname_r. It is zero
4896 if d_getservbyname_r is undef, and one of the
4897 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getservbyname_r is
4898 defined.
4899 "getservbyport_r_proto"
4901 From d_getservbyport_r.U:
4902 This variable encodes the prototype of getservbyport_r. It is zero
4904 if d_getservbyport_r is undef, and one of the
4905 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getservbyport_r is
4906 defined.
4907 "getservent_r_proto"
4909 From d_getservent_r.U:
4910 This variable encodes the prototype of getservent_r. It is zero if
4912 d_getservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4913 macros of reentr.h if d_getservent_r is defined.
4914 "getspnam_r_proto"
4916 From d_getspnam_r.U:
4917 This variable encodes the prototype of getspnam_r. It is zero if
4919 d_getspnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4920 macros of reentr.h if d_getspnam_r is defined.
4921 "gidformat"
4923 From gidf.U:
4924 This variable contains the format string used for printing a Gid_t.
4926 "gidsign"
4928 From gidsign.U:
4929 This variable contains the signedness of a gidtype. 1 for
4931 unsigned, -1 for signed.
4932 "gidsize"
4934 From gidsize.U:
4935 This variable contains the size of a gidtype in bytes.
4937 "gidtype"
4939 From gidtype.U:
4940 This variable defines Gid_t to be something like gid_t, int,
4942 ushort, or whatever type is used to declare the return type of
4943 getgid(). Typically, it is the type of group ids in the kernel.
4944 "glibpth"
4946 From libpth.U:
4947 This variable holds the general path (space-separated) used to find
4949 libraries. It may contain directories that do not exist on this
4950 platform, libpth is the cleaned-up version.
4951 "gmake"
4953 From Loc.U:
4954 This variable is used internally by Configure to determine the full
4956 pathname (if any) of the gmake program. After Configure runs, the
4957 value is reset to a plain "gmake" and is not useful.
4958 "gmtime_r_proto"
4960 From d_gmtime_r.U:
4961 This variable encodes the prototype of gmtime_r. It is zero if
4963 d_gmtime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
4964 of reentr.h if d_gmtime_r is defined.
4965 "gnulibc_version"
4967 From d_gnulibc.U:
4968 This variable contains the version number of the "GNU" C library.
4970 It is usually something like 2.2.5. It is a plain '' if this is
4971 not the "GNU" C library, or if the version is unknown.
4972 "grep"
4974 From Loc.U:
4975 This variable is used internally by Configure to determine the full
4977 pathname (if any) of the grep program. After Configure runs, the
4978 value is reset to a plain "grep" and is not useful.
4979 "groupcat"
4981 From nis.U:
4982 This variable contains a command that produces the text of the
4984 /etc/group file. This is normally "cat /etc/group", but can be
4985 "ypcat group" when "NIS" is used. On some systems, such as os390,
4986 there may be no equivalent command, in which case this variable is
4987 unset.
4988 "groupstype"
4990 From groupstype.U:
4991 This variable defines Groups_t to be something like gid_t, int,
4993 ushort, or whatever type is used for the second argument to
4994 getgroups() and setgroups(). Usually, this is the same as gidtype
4995 (gid_t), but sometimes it isn't.
4996 "gzip"
4998 From Loc.U:
4999 This variable is used internally by Configure to determine the full
5001 pathname (if any) of the gzip program. After Configure runs, the
5002 value is reset to a plain "gzip" and is not useful.
5003 h
5005 "h_fcntl"
5006 From h_fcntl.U:
5007 This is variable gets set in various places to tell i_fcntl that
5009 <fcntl.h> should be included.
5010 "h_sysfile"
5012 From h_sysfile.U:
5013 This is variable gets set in various places to tell i_sys_file that
5015 <sys/file.h> should be included.
5016 "hint"
5018 From Oldconfig.U:
5019 Gives the type of hints used for previous answers. May be one of
5021 "default", "recommended" or "previous".
5022 "hostcat"
5024 From nis.U:
5025 This variable contains a command that produces the text of the
5027 /etc/hosts file. This is normally "cat /etc/hosts", but can be
5028 "ypcat hosts" when "NIS" is used. On some systems, such as os390,
5029 there may be no equivalent command, in which case this variable is
5030 unset.
5031 "hostgenerate"
5033 From Cross.U:
5034 This variable contains the path to a generate_uudmap binary that
5036 can be run on the host "OS" when cross-compiling. Useful and
5037 available only during Perl build. Empty string '' if not cross-
5038 compiling.
5039 "hostosname"
5041 From Cross.U:
5042 This variable contains the original value of $^O for hostperl when
5044 cross-compiling. This is useful to pick the proper tools when
5045 running build code in the host. Empty string '' if not cross-
5046 compiling.
5047 "hostperl"
5049 From Cross.U:
5050 This variable contains the path to a miniperl binary that can be
5052 run on the host "OS" when cross-compiling. Useful and available
5053 only during Perl build. Empty string '' if not cross-compiling.
5054 "html1dir"
5056 From html1dir.U:
5057 This variable contains the name of the directory in which html
5059 source pages are to be put. This directory is for pages that
5060 describe whole programs, not libraries or modules. It is intended
5061 to correspond roughly to section 1 of the Unix manuals.
5062 "html1direxp"
5064 From html1dir.U:
5065 This variable is the same as the html1dir variable, but is filename
5067 expanded at configuration time, for convenient use in makefiles.
5068 "html3dir"
5070 From html3dir.U:
5071 This variable contains the name of the directory in which html
5073 source pages are to be put. This directory is for pages that
5074 describe libraries or modules. It is intended to correspond
5075 roughly to section 3 of the Unix manuals.
5076 "html3direxp"
5078 From html3dir.U:
5079 This variable is the same as the html3dir variable, but is filename
5081 expanded at configuration time, for convenient use in makefiles.
5082 i
5084 "i16size"
5085 From perlxv.U:
5086 This variable is the size of an I16 in bytes.
5088 "i16type"
5090 From perlxv.U:
5091 This variable contains the C type used for Perl's I16.
5093 "i32size"
5095 From perlxv.U:
5096 This variable is the size of an I32 in bytes.
5098 "i32type"
5100 From perlxv.U:
5101 This variable contains the C type used for Perl's I32.
5103 "i64size"
5105 From perlxv.U:
5106 This variable is the size of an I64 in bytes.
5108 "i64type"
5110 From perlxv.U:
5111 This variable contains the C type used for Perl's I64.
5113 "i8size"
5115 From perlxv.U:
5116 This variable is the size of an I8 in bytes.
5118 "i8type"
5120 From perlxv.U:
5121 This variable contains the C type used for Perl's I8.
5123 "i_arpainet"
5125 From i_arpainet.U:
5126 This variable conditionally defines the "I_ARPA_INET" symbol, and
5128 indicates whether a C program should include <arpa/inet.h>.
5129 "i_bfd"
5131 From i_bfd.U:
5132 This variable conditionally defines the "I_BFD" symbol, and
5134 indicates whether a C program can include <bfd.h>.
5135 "i_bsdioctl"
5137 From i_sysioctl.U:
5138 This variable conditionally defines the "I_SYS_BSDIOCTL" symbol,
5140 which indicates to the C program that <sys/bsdioctl.h> exists and
5141 should be included.
5142 "i_crypt"
5144 From i_crypt.U:
5145 This variable conditionally defines the "I_CRYPT" symbol, and
5147 indicates whether a C program should include <crypt.h>.
5148 "i_db"
5150 From i_db.U:
5151 This variable conditionally defines the "I_DB" symbol, and
5153 indicates whether a C program may include Berkeley's "DB" include
5154 file <db.h>.
5155 "i_dbm"
5157 From i_dbm.U:
5158 This variable conditionally defines the "I_DBM" symbol, which
5160 indicates to the C program that <dbm.h> exists and should be
5161 included.
5162 "i_dirent"
5164 From i_dirent.U:
5165 This variable conditionally defines "I_DIRENT", which indicates to
5167 the C program that it should include <dirent.h>.
5168 "i_dlfcn"
5170 From i_dlfcn.U:
5171 This variable conditionally defines the "I_DLFCN" symbol, which
5173 indicates to the C program that <dlfcn.h> exists and should be
5174 included.
5175 "i_execinfo"
5177 From i_execinfo.U:
5178 This variable conditionally defines the "I_EXECINFO" symbol, and
5180 indicates whether a C program may include <execinfo.h>, for
5181 backtrace() support.
5182 "i_fcntl"
5184 From i_fcntl.U:
5185 This variable controls the value of "I_FCNTL" (which tells the C
5187 program to include <fcntl.h>).
5188 "i_fenv"
5190 From i_fenv.U:
5191 This variable conditionally defines the "I_FENV" symbol, which
5193 indicates to the C program that <fenv.h> exists and should be
5194 included.
5195 "i_fp"
5197 From i_fp.U:
5198 This variable conditionally defines the "I_FP" symbol, and
5200 indicates whether a C program should include <fp.h>.
5201 "i_fp_class"
5203 From i_fp_class.U:
5204 This variable conditionally defines the "I_FP_CLASS" symbol, and
5206 indicates whether a C program should include <fp_class.h>.
5207 "i_gdbm"
5209 From i_gdbm.U:
5210 This variable conditionally defines the "I_GDBM" symbol, which
5212 indicates to the C program that <gdbm.h> exists and should be
5213 included.
5214 "i_gdbm_ndbm"
5216 From i_ndbm.U:
5217 This variable conditionally defines the "I_GDBM_NDBM" symbol, which
5219 indicates to the C program that <gdbm-ndbm.h> exists and should be
5220 included. This is the location of the ndbm.h compatibility file in
5221 Debian 4.0.
5222 "i_gdbmndbm"
5224 From i_ndbm.U:
5225 This variable conditionally defines the "I_GDBMNDBM" symbol, which
5227 indicates to the C program that <gdbm/ndbm.h> exists and should be
5228 included. This was the location of the ndbm.h compatibility file
5229 in RedHat 7.1.
5230 "i_grp"
5232 From i_grp.U:
5233 This variable conditionally defines the "I_GRP" symbol, and
5235 indicates whether a C program should include <grp.h>.
5236 "i_ieeefp"
5238 From i_ieeefp.U:
5239 This variable conditionally defines the "I_IEEEFP" symbol, and
5241 indicates whether a C program should include <ieeefp.h>.
5242 "i_inttypes"
5244 From i_inttypes.U:
5245 This variable conditionally defines the "I_INTTYPES" symbol, and
5247 indicates whether a C program should include <inttypes.h>.
5248 "i_langinfo"
5250 From i_langinfo.U:
5251 This variable conditionally defines the "I_LANGINFO" symbol, and
5253 indicates whether a C program should include <langinfo.h>.
5254 "i_libutil"
5256 From i_libutil.U:
5257 This variable conditionally defines the "I_LIBUTIL" symbol, and
5259 indicates whether a C program should include <libutil.h>.
5260 "i_locale"
5262 From i_locale.U:
5263 This variable conditionally defines the "I_LOCALE" symbol, and
5265 indicates whether a C program should include <locale.h>.
5266 "i_machcthr"
5268 From i_machcthr.U:
5269 This variable conditionally defines the "I_MACH_CTHREADS" symbol,
5271 and indicates whether a C program should include <mach/cthreads.h>.
5272 "i_malloc"
5274 From i_malloc.U:
5275 This variable conditionally defines the "I_MALLOC" symbol, and
5277 indicates whether a C program should include <malloc.h>.
5278 "i_mallocmalloc"
5280 From i_mallocmalloc.U:
5281 This variable conditionally defines the "I_MALLOCMALLOC" symbol,
5283 and indicates whether a C program should include <malloc/malloc.h>.
5284 "i_mntent"
5286 From i_mntent.U:
5287 This variable conditionally defines the "I_MNTENT" symbol, and
5289 indicates whether a C program should include <mntent.h>.
5290 "i_ndbm"
5292 From i_ndbm.U:
5293 This variable conditionally defines the "I_NDBM" symbol, which
5295 indicates to the C program that <ndbm.h> exists and should be
5296 included.
5297 "i_netdb"
5299 From i_netdb.U:
5300 This variable conditionally defines the "I_NETDB" symbol, and
5302 indicates whether a C program should include <netdb.h>.
5303 "i_neterrno"
5305 From i_neterrno.U:
5306 This variable conditionally defines the "I_NET_ERRNO" symbol, which
5308 indicates to the C program that <net/errno.h> exists and should be
5309 included.
5310 "i_netinettcp"
5312 From i_netinettcp.U:
5313 This variable conditionally defines the "I_NETINET_TCP" symbol, and
5315 indicates whether a C program should include <netinet/tcp.h>.
5316 "i_niin"
5318 From i_niin.U:
5319 This variable conditionally defines "I_NETINET_IN", which indicates
5321 to the C program that it should include <netinet/in.h>. Otherwise,
5322 you may try <sys/in.h>.
5323 "i_poll"
5325 From i_poll.U:
5326 This variable conditionally defines the "I_POLL" symbol, and
5328 indicates whether a C program should include <poll.h>.
5329 "i_prot"
5331 From i_prot.U:
5332 This variable conditionally defines the "I_PROT" symbol, and
5334 indicates whether a C program should include <prot.h>.
5335 "i_pthread"
5337 From i_pthread.U:
5338 This variable conditionally defines the "I_PTHREAD" symbol, and
5340 indicates whether a C program should include <pthread.h>.
5341 "i_pwd"
5343 From i_pwd.U:
5344 This variable conditionally defines "I_PWD", which indicates to the
5346 C program that it should include <pwd.h>.
5347 "i_quadmath"
5349 From i_quadmath.U:
5350 This variable conditionally defines "I_QUADMATH", which indicates
5352 to the C program that it should include <quadmath.h>.
5353 "i_rpcsvcdbm"
5355 From i_dbm.U:
5356 This variable conditionally defines the "I_RPCSVC_DBM" symbol,
5358 which indicates to the C program that <rpcsvc/dbm.h> exists and
5359 should be included. Some System V systems might need this instead
5360 of <dbm.h>.
5361 "i_sgtty"
5363 From i_termio.U:
5364 This variable conditionally defines the "I_SGTTY" symbol, which
5366 indicates to the C program that it should include <sgtty.h> rather
5367 than <termio.h>.
5368 "i_shadow"
5370 From i_shadow.U:
5371 This variable conditionally defines the "I_SHADOW" symbol, and
5373 indicates whether a C program should include <shadow.h>.
5374 "i_socks"
5376 From i_socks.U:
5377 This variable conditionally defines the "I_SOCKS" symbol, and
5379 indicates whether a C program should include <socks.h>.
5380 "i_stdbool"
5382 From i_stdbool.U:
5383 This variable conditionally defines the "I_STDBOOL" symbol, which
5385 indicates to the C program that <stdbool.h> exists and should be
5386 included.
5387 "i_stdint"
5389 From i_stdint.U:
5390 This variable conditionally defines the "I_STDINT" symbol, which
5392 indicates to the C program that <stdint.h> exists and should be
5393 included.
5394 "i_stdlib"
5396 From i_stdlib.U:
5397 This variable unconditionally defines the "I_STDLIB" symbol.
5399 "i_sunmath"
5401 From i_sunmath.U:
5402 This variable conditionally defines the "I_SUNMATH" symbol, and
5404 indicates whether a C program should include <sunmath.h>.
5405 "i_sysaccess"
5407 From i_sysaccess.U:
5408 This variable conditionally defines the "I_SYS_ACCESS" symbol, and
5410 indicates whether a C program should include <sys/access.h>.
5411 "i_sysdir"
5413 From i_sysdir.U:
5414 This variable conditionally defines the "I_SYS_DIR" symbol, and
5416 indicates whether a C program should include <sys/dir.h>.
5417 "i_sysfile"
5419 From i_sysfile.U:
5420 This variable conditionally defines the "I_SYS_FILE" symbol, and
5422 indicates whether a C program should include <sys/file.h> to get
5423 "R_OK" and friends.
5424 "i_sysfilio"
5426 From i_sysioctl.U:
5427 This variable conditionally defines the "I_SYS_FILIO" symbol, which
5429 indicates to the C program that <sys/filio.h> exists and should be
5430 included in preference to <sys/ioctl.h>.
5431 "i_sysin"
5433 From i_niin.U:
5434 This variable conditionally defines "I_SYS_IN", which indicates to
5436 the C program that it should include <sys/in.h> instead of
5437 <netinet/in.h>.
5438 "i_sysioctl"
5440 From i_sysioctl.U:
5441 This variable conditionally defines the "I_SYS_IOCTL" symbol, which
5443 indicates to the C program that <sys/ioctl.h> exists and should be
5444 included.
5445 "i_syslog"
5447 From i_syslog.U:
5448 This variable conditionally defines the "I_SYSLOG" symbol, and
5450 indicates whether a C program should include <syslog.h>.
5451 "i_sysmman"
5453 From i_sysmman.U:
5454 This variable conditionally defines the "I_SYS_MMAN" symbol, and
5456 indicates whether a C program should include <sys/mman.h>.
5457 "i_sysmode"
5459 From i_sysmode.U:
5460 This variable conditionally defines the "I_SYSMODE" symbol, and
5462 indicates whether a C program should include <sys/mode.h>.
5463 "i_sysmount"
5465 From i_sysmount.U:
5466 This variable conditionally defines the "I_SYSMOUNT" symbol, and
5468 indicates whether a C program should include <sys/mount.h>.
5469 "i_sysndir"
5471 From i_sysndir.U:
5472 This variable conditionally defines the "I_SYS_NDIR" symbol, and
5474 indicates whether a C program should include <sys/ndir.h>.
5475 "i_sysparam"
5477 From i_sysparam.U:
5478 This variable conditionally defines the "I_SYS_PARAM" symbol, and
5480 indicates whether a C program should include <sys/param.h>.
5481 "i_syspoll"
5483 From i_syspoll.U:
5484 This variable conditionally defines the "I_SYS_POLL" symbol, which
5486 indicates to the C program that it should include <sys/poll.h>.
5487 "i_sysresrc"
5489 From i_sysresrc.U:
5490 This variable conditionally defines the "I_SYS_RESOURCE" symbol,
5492 and indicates whether a C program should include <sys/resource.h>.
5493 "i_syssecrt"
5495 From i_syssecrt.U:
5496 This variable conditionally defines the "I_SYS_SECURITY" symbol,
5498 and indicates whether a C program should include <sys/security.h>.
5499 "i_sysselct"
5501 From i_sysselct.U:
5502 This variable conditionally defines "I_SYS_SELECT", which indicates
5504 to the C program that it should include <sys/select.h> in order to
5505 get the definition of struct timeval.
5506 "i_syssockio"
5508 From i_sysioctl.U:
5509 This variable conditionally defines "I_SYS_SOCKIO" to indicate to
5511 the C program that socket ioctl codes may be found in
5512 <sys/sockio.h> instead of <sys/ioctl.h>.
5513 "i_sysstat"
5515 From i_sysstat.U:
5516 This variable conditionally defines the "I_SYS_STAT" symbol, and
5518 indicates whether a C program should include <sys/stat.h>.
5519 "i_sysstatfs"
5521 From i_sysstatfs.U:
5522 This variable conditionally defines the "I_SYSSTATFS" symbol, and
5524 indicates whether a C program should include <sys/statfs.h>.
5525 "i_sysstatvfs"
5527 From i_sysstatvfs.U:
5528 This variable conditionally defines the "I_SYSSTATVFS" symbol, and
5530 indicates whether a C program should include <sys/statvfs.h>.
5531 "i_systime"
5533 From i_time.U:
5534 This variable conditionally defines "I_SYS_TIME", which indicates
5536 to the C program that it should include <sys/time.h>.
5537 "i_systimek"
5539 From i_time.U:
5540 This variable conditionally defines "I_SYS_TIME_KERNEL", which
5542 indicates to the C program that it should include <sys/time.h> with
5543 "KERNEL" defined.
5544 "i_systimes"
5546 From i_systimes.U:
5547 This variable conditionally defines the "I_SYS_TIMES" symbol, and
5549 indicates whether a C program should include <sys/times.h>.
5550 "i_systypes"
5552 From i_systypes.U:
5553 This variable conditionally defines the "I_SYS_TYPES" symbol, and
5555 indicates whether a C program should include <sys/types.h>.
5556 "i_sysuio"
5558 From i_sysuio.U:
5559 This variable conditionally defines the "I_SYSUIO" symbol, and
5561 indicates whether a C program should include <sys/uio.h>.
5562 "i_sysun"
5564 From i_sysun.U:
5565 This variable conditionally defines "I_SYS_UN", which indicates to
5567 the C program that it should include <sys/un.h> to get "UNIX"
5568 domain socket definitions.
5569 "i_sysutsname"
5571 From i_sysutsname.U:
5572 This variable conditionally defines the "I_SYSUTSNAME" symbol, and
5574 indicates whether a C program should include <sys/utsname.h>.
5575 "i_sysvfs"
5577 From i_sysvfs.U:
5578 This variable conditionally defines the "I_SYSVFS" symbol, and
5580 indicates whether a C program should include <sys/vfs.h>.
5581 "i_syswait"
5583 From i_syswait.U:
5584 This variable conditionally defines "I_SYS_WAIT", which indicates
5586 to the C program that it should include <sys/wait.h>.
5587 "i_termio"
5589 From i_termio.U:
5590 This variable conditionally defines the "I_TERMIO" symbol, which
5592 indicates to the C program that it should include <termio.h> rather
5593 than <sgtty.h>.
5594 "i_termios"
5596 From i_termio.U:
5597 This variable conditionally defines the "I_TERMIOS" symbol, which
5599 indicates to the C program that the "POSIX" <termios.h> file is to
5600 be included.
5601 "i_time"
5603 From i_time.U:
5604 This variable unconditionally defines "I_TIME", which indicates to
5606 the C program that it should include <time.h>.
5607 "i_unistd"
5609 From i_unistd.U:
5610 This variable conditionally defines the "I_UNISTD" symbol, and
5612 indicates whether a C program should include <unistd.h>.
5613 "i_ustat"
5615 From i_ustat.U:
5616 This variable conditionally defines the "I_USTAT" symbol, and
5618 indicates whether a C program should include <ustat.h>.
5619 "i_utime"
5621 From i_utime.U:
5622 This variable conditionally defines the "I_UTIME" symbol, and
5624 indicates whether a C program should include <utime.h>.
5625 "i_vfork"
5627 From i_vfork.U:
5628 This variable conditionally defines the "I_VFORK" symbol, and
5630 indicates whether a C program should include vfork.h.
5631 "i_wchar"
5633 From i_wchar.U:
5634 This variable conditionally defines the "I_WCHAR" symbol, that
5636 indicates whether a C program may include <wchar.h>.
5637 "i_wctype"
5639 From i_wctype.U:
5640 This variable conditionally defines the "I_WCTYPE" symbol, that
5642 indicates whether a C program may include <wctype.h>.
5643 "i_xlocale"
5645 From d_newlocale.U:
5646 This symbol, if defined, indicates to the C program that it should
5648 include <xlocale.h> to get uselocale() and its friends
5649 "ignore_versioned_solibs"
5651 From libs.U:
5652 This variable should be non-empty if non-versioned shared libraries
5654 (libfoo.so.x.y) are to be ignored (because they cannot be linked
5655 against).
5656 "inc_version_list"
5658 From inc_version_list.U:
5659 This variable specifies the list of subdirectories in over which
5661 perl.c:incpush() and lib/lib.pm will automatically search when
5662 adding directories to @"INC". The elements in the list are
5663 separated by spaces. This is only useful if you have a perl
5664 library directory tree structured like the default one. See
5665 "INSTALL" for how this works. The versioned site_perl directory
5666 was introduced in 5.005, so that is the lowest possible value.
5667 This list includes architecture-dependent directories back to
5669 version $api_versionstring (e.g. 5.5.640) and architecture-
5670 independent directories all the way back to 5.005.
5671 "inc_version_list_init"
5673 From inc_version_list.U:
5674 This variable holds the same list as inc_version_list, but each
5676 item is enclosed in double quotes and separated by commas, suitable
5677 for use in the "PERL_INC_VERSION_LIST" initialization.
5678 "incpath"
5680 From usrinc.U:
5681 This variable must precede the normal include path to get the right
5683 one, as in $incpath/usr/include or $incpath/usr/lib. Value can be
5684 "" or /bsd43 on mips.
5685 "incpth"
5687 From libpth.U:
5688 This variable must precede the normal include path to get the right
5690 one, as in $incpath/usr/include or $incpath/usr/lib. Value can be
5691 "" or /bsd43 on mips.
5692 "inews"
5694 From Loc.U:
5695 This variable is defined but not used by Configure. The value is
5697 the empty string and is not useful.
5698 "initialinstalllocation"
5700 From bin.U:
5701 When userelocatableinc is true, this variable holds the location
5703 that make install should copy the perl binary to, with all the run-
5704 time relocatable paths calculated from this at install time. When
5705 used, it is initialized to the original value of binexp, and then
5706 binexp is set to .../, as the other binaries are found relative to
5707 the perl binary.
5708 "installarchlib"
5710 From archlib.U:
5711 This variable is really the same as archlibexp but may differ on
5713 those systems using "AFS". For extra portability, only this
5714 variable should be used in makefiles.
5715 "installbin"
5717 From bin.U:
5718 This variable is the same as binexp unless "AFS" is running in
5720 which case the user is explicitly prompted for it. This variable
5721 should always be used in your makefiles for maximum portability.
5722 "installhtml1dir"
5724 From html1dir.U:
5725 This variable is really the same as html1direxp, unless you are
5727 using a different installprefix. For extra portability, you should
5728 only use this variable within your makefiles.
5729 "installhtml3dir"
5731 From html3dir.U:
5732 This variable is really the same as html3direxp, unless you are
5734 using a different installprefix. For extra portability, you should
5735 only use this variable within your makefiles.
5736 "installman1dir"
5738 From man1dir.U:
5739 This variable is really the same as man1direxp, unless you are
5741 using "AFS" in which case it points to the read/write location
5742 whereas man1direxp only points to the read-only access location.
5743 For extra portability, you should only use this variable within
5744 your makefiles.
5745 "installman3dir"
5747 From man3dir.U:
5748 This variable is really the same as man3direxp, unless you are
5750 using "AFS" in which case it points to the read/write location
5751 whereas man3direxp only points to the read-only access location.
5752 For extra portability, you should only use this variable within
5753 your makefiles.
5754 "installprefix"
5756 From installprefix.U:
5757 This variable holds the name of the directory below which "make
5759 install" will install the package. For most users, this is the
5760 same as prefix. However, it is useful for installing the software
5761 into a different (usually temporary) location after which it can be
5762 bundled up and moved somehow to the final location specified by
5763 prefix.
5764 "installprefixexp"
5766 From installprefix.U:
5767 This variable holds the full absolute path of installprefix with
5769 all ~-expansion done.
5770 "installprivlib"
5772 From privlib.U:
5773 This variable is really the same as privlibexp but may differ on
5775 those systems using "AFS". For extra portability, only this
5776 variable should be used in makefiles.
5777 "installscript"
5779 From scriptdir.U:
5780 This variable is usually the same as scriptdirexp, unless you are
5782 on a system running "AFS", in which case they may differ slightly.
5783 You should always use this variable within your makefiles for
5784 portability.
5785 "installsitearch"
5787 From sitearch.U:
5788 This variable is really the same as sitearchexp but may differ on
5790 those systems using "AFS". For extra portability, only this
5791 variable should be used in makefiles.
5792 "installsitebin"
5794 From sitebin.U:
5795 This variable is usually the same as sitebinexp, unless you are on
5797 a system running "AFS", in which case they may differ slightly. You
5798 should always use this variable within your makefiles for
5799 portability.
5800 "installsitehtml1dir"
5802 From sitehtml1dir.U:
5803 This variable is really the same as sitehtml1direxp, unless you are
5805 using "AFS" in which case it points to the read/write location
5806 whereas html1direxp only points to the read-only access location.
5807 For extra portability, you should only use this variable within
5808 your makefiles.
5809 "installsitehtml3dir"
5811 From sitehtml3dir.U:
5812 This variable is really the same as sitehtml3direxp, unless you are
5814 using "AFS" in which case it points to the read/write location
5815 whereas html3direxp only points to the read-only access location.
5816 For extra portability, you should only use this variable within
5817 your makefiles.
5818 "installsitelib"
5820 From sitelib.U:
5821 This variable is really the same as sitelibexp but may differ on
5823 those systems using "AFS". For extra portability, only this
5824 variable should be used in makefiles.
5825 "installsiteman1dir"
5827 From siteman1dir.U:
5828 This variable is really the same as siteman1direxp, unless you are
5830 using "AFS" in which case it points to the read/write location
5831 whereas man1direxp only points to the read-only access location.
5832 For extra portability, you should only use this variable within
5833 your makefiles.
5834 "installsiteman3dir"
5836 From siteman3dir.U:
5837 This variable is really the same as siteman3direxp, unless you are
5839 using "AFS" in which case it points to the read/write location
5840 whereas man3direxp only points to the read-only access location.
5841 For extra portability, you should only use this variable within
5842 your makefiles.
5843 "installsitescript"
5845 From sitescript.U:
5846 This variable is usually the same as sitescriptexp, unless you are
5848 on a system running "AFS", in which case they may differ slightly.
5849 You should always use this variable within your makefiles for
5850 portability.
5851 "installstyle"
5853 From installstyle.U:
5854 This variable describes the "style" of the perl installation. This
5856 is intended to be useful for tools that need to manipulate entire
5857 perl distributions. Perl itself doesn't use this to find its
5858 libraries -- the library directories are stored directly in
5859 Config.pm. Currently, there are only two styles: "lib" and
5860 lib/perl5. The default library locations (e.g. privlib, sitelib)
5861 are either $prefix/lib or $prefix/lib/perl5. The former is useful
5862 if $prefix is a directory dedicated to perl (e.g. /opt/perl), while
5863 the latter is useful if $prefix is shared by many packages, e.g. if
5864 $prefix=/usr/local.
5865 Unfortunately, while this "style" variable is used to set defaults
5867 for all three directory hierarchies (core, vendor, and site), there
5868 is no guarantee that the same style is actually appropriate for all
5869 those directories. For example, $prefix might be /opt/perl, but
5870 $siteprefix might be /usr/local. (Perhaps, in retrospect, the
5871 "lib" style should never have been supported, but it did seem like
5872 a nice idea at the time.)
5873 The situation is even less clear for tools such as MakeMaker that
5875 can be used to install additional modules into non-standard places.
5876 For example, if a user intends to install a module into a private
5877 directory (perhaps by setting "PREFIX" on the Makefile.PL command
5878 line), then there is no reason to assume that the Configure-time
5879 $installstyle setting will be relevant for that "PREFIX".
5880 This may later be extended to include other information, so be
5882 careful with pattern-matching on the results.
5883 For compatibility with perl5.005 and earlier, the default setting
5885 is based on whether or not $prefix contains the string "perl".
5886 "installusrbinperl"
5888 From instubperl.U:
5889 This variable tells whether Perl should be installed also as
5891 /usr/bin/perl in addition to $installbin/perl
5892 "installvendorarch"
5894 From vendorarch.U:
5895 This variable is really the same as vendorarchexp but may differ on
5897 those systems using "AFS". For extra portability, only this
5898 variable should be used in makefiles.
5899 "installvendorbin"
5901 From vendorbin.U:
5902 This variable is really the same as vendorbinexp but may differ on
5904 those systems using "AFS". For extra portability, only this
5905 variable should be used in makefiles.
5906 "installvendorhtml1dir"
5908 From vendorhtml1dir.U:
5909 This variable is really the same as vendorhtml1direxp but may
5911 differ on those systems using "AFS". For extra portability, only
5912 this variable should be used in makefiles.
5913 "installvendorhtml3dir"
5915 From vendorhtml3dir.U:
5916 This variable is really the same as vendorhtml3direxp but may
5918 differ on those systems using "AFS". For extra portability, only
5919 this variable should be used in makefiles.
5920 "installvendorlib"
5922 From vendorlib.U:
5923 This variable is really the same as vendorlibexp but may differ on
5925 those systems using "AFS". For extra portability, only this
5926 variable should be used in makefiles.
5927 "installvendorman1dir"
5929 From vendorman1dir.U:
5930 This variable is really the same as vendorman1direxp but may differ
5932 on those systems using "AFS". For extra portability, only this
5933 variable should be used in makefiles.
5934 "installvendorman3dir"
5936 From vendorman3dir.U:
5937 This variable is really the same as vendorman3direxp but may differ
5939 on those systems using "AFS". For extra portability, only this
5940 variable should be used in makefiles.
5941 "installvendorscript"
5943 From vendorscript.U:
5944 This variable is really the same as vendorscriptexp but may differ
5946 on those systems using "AFS". For extra portability, only this
5947 variable should be used in makefiles.
5948 "intsize"
5950 From intsize.U:
5951 This variable contains the value of the "INTSIZE" symbol, which
5953 indicates to the C program how many bytes there are in an int.
5954 "issymlink"
5956 From issymlink.U:
5957 This variable holds the test command to test for a symbolic link
5959 (if they are supported). Typical values include "test -h" and
5960 "test -L".
5961 "ivdformat"
5963 From perlxvf.U:
5964 This variable contains the format string used for printing a Perl
5966 "IV" as a signed decimal integer.
5967 "ivsize"
5969 From perlxv.U:
5970 This variable is the size of an "IV" in bytes.
5972 "ivtype"
5974 From perlxv.U:
5975 This variable contains the C type used for Perl's "IV".
5977 k
5979 "known_extensions"
5980 From Extensions.U:
5981 This variable holds a list of all extensions (both "XS" and non-xs)
5983 included in the package source distribution. This information is
5984 only really of use during the Perl build, as the list makes no
5985 distinction between extensions which were build and installed, and
5986 those which where not. See "extensions" for the list of extensions
5987 actually built and available.
5988 "ksh"
5990 From Loc.U:
5991 This variable is defined but not used by Configure. The value is
5993 the empty string and is not useful.
5994 l
5996 "ld"
5997 From dlsrc.U:
5998 This variable indicates the program to be used to link libraries
6000 for dynamic loading. On some systems, it is "ld". On "ELF"
6001 systems, it should be $cc. Mostly, we'll try to respect the hint
6002 file setting.
6003 "ld_can_script"
6005 From dlsrc.U:
6006 This variable shows if the loader accepts scripts in the form of
6008 -Wl,--version-script=ld.script. This is currently only supported
6009 for "GNU" ld on "ELF" in dynamic loading builds.
6010 "lddlflags"
6012 From dlsrc.U:
6013 This variable contains any special flags that might need to be
6015 passed to $ld to create a shared library suitable for dynamic
6016 loading. It is up to the makefile to use it. For hpux, it should
6017 be "-b". For sunos 4.1, it is empty.
6018 "ldflags"
6020 From ccflags.U:
6021 This variable contains any additional C loader flags desired by the
6023 user. It is up to the Makefile to use this.
6024 "ldflags_uselargefiles"
6026 From uselfs.U:
6027 This variable contains the loader flags needed by large file builds
6029 and added to ldflags by hints files.
6030 "ldlibpthname"
6032 From libperl.U:
6033 This variable holds the name of the shared library search path,
6035 often "LD_LIBRARY_PATH". To get an empty string, the hints file
6036 must set this to "none".
6037 "less"
6039 From Loc.U:
6040 This variable is used internally by Configure to determine the full
6042 pathname (if any) of the less program. After Configure runs, the
6043 value is reset to a plain "less" and is not useful.
6044 "lib_ext"
6046 From Unix.U:
6047 This is an old synonym for _a.
6049 "libc"
6051 From libc.U:
6052 This variable contains the location of the C library.
6054 "libperl"
6056 From libperl.U:
6057 The perl executable is obtained by linking perlmain.c with libperl,
6059 any static extensions (usually just DynaLoader), and any other
6060 libraries needed on this system. libperl is usually libperl.a, but
6061 can also be libperl.so.xxx if the user wishes to build a perl
6062 executable with a shared library.
6063 "libpth"
6065 From libpth.U:
6066 This variable holds the general path (space-separated) used to find
6068 libraries. It is intended to be used by other units.
6069 "libs"
6071 From libs.U:
6072 This variable holds the additional libraries we want to use. It is
6074 up to the Makefile to deal with it. The list can be empty.
6075 "libsdirs"
6077 From libs.U:
6078 This variable holds the directory names aka dirnames of the
6080 libraries we found and accepted, duplicates are removed.
6081 "libsfiles"
6083 From libs.U:
6084 This variable holds the filenames aka basenames of the libraries we
6086 found and accepted.
6087 "libsfound"
6089 From libs.U:
6090 This variable holds the full pathnames of the libraries we found
6092 and accepted.
6093 "libspath"
6095 From libs.U:
6096 This variable holds the directory names probed for libraries.
6098 "libswanted"
6100 From Myinit.U:
6101 This variable holds a list of all the libraries we want to search.
6103 The order is chosen to pick up the c library ahead of ucb or bsd
6104 libraries for SVR4.
6105 "libswanted_uselargefiles"
6107 From uselfs.U:
6108 This variable contains the libraries needed by large file builds
6110 and added to ldflags by hints files. It is a space separated list
6111 of the library names without the "lib" prefix or any suffix, just
6112 like libswanted..
6113 "line"
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 "lint"
6121 From Loc.U:
6122 This variable is defined but not used by Configure. The value is
6124 the empty string and is not useful.
6125 "lkflags"
6127 From ccflags.U:
6128 This variable contains any additional C partial linker flags
6130 desired by the user. It is up to the Makefile to use this.
6131 "ln"
6133 From Loc.U:
6134 This variable is used internally by Configure to determine the full
6136 pathname (if any) of the ln program. After Configure runs, the
6137 value is reset to a plain "ln" and is not useful.
6138 "lns"
6140 From lns.U:
6141 This variable holds the name of the command to make symbolic links
6143 (if they are supported). It can be used in the Makefile. It is
6144 either "ln -s" or "ln"
6145 "localtime_r_proto"
6147 From d_localtime_r.U:
6148 This variable encodes the prototype of localtime_r. It is zero if
6150 d_localtime_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6151 macros of reentr.h if d_localtime_r is defined.
6152 "locincpth"
6154 From ccflags.U:
6155 This variable contains a list of additional directories to be
6157 searched by the compiler. The appropriate "-I" directives will be
6158 added to ccflags. This is intended to simplify setting local
6159 directories from the Configure command line. It's not much, but it
6160 parallels the loclibpth stuff in libpth.U.
6161 "loclibpth"
6163 From libpth.U:
6164 This variable holds the paths (space-separated) used to find local
6166 libraries. It is prepended to libpth, and is intended to be easily
6167 set from the command line.
6168 "longdblinfbytes"
6170 From infnan.U:
6171 This variable contains comma-separated list of hexadecimal bytes
6173 for the long double precision infinity.
6174 "longdblkind"
6176 From d_longdbl.U:
6177 This variable, if defined, encodes the type of a long double: 0 =
6179 double, 1 = "IEEE" 754 128-bit little endian, 2 = "IEEE" 754
6180 128-bit big endian, 3 = x86 80-bit little endian, 4 = x86 80-bit
6181 big endian, 5 = double-double 128-bit little endian, 6 = double-
6182 double 128-bit big endian, 7 = 128-bit mixed-endian double-double
6183 (64-bit LEs in "BE"), 8 = 128-bit mixed-endian double-double
6184 (64-bit BEs in "LE"), 9 = 128-bit "PDP"-style mixed-endian long
6185 doubles, -1 = unknown format.
6186 "longdblmantbits"
6188 From mantbits.U:
6189 This symbol, if defined, tells how many mantissa bits there are in
6191 long double precision floating point format. Note that this can be
6192 "LDBL_MANT_DIG" minus one, since "LDBL_MANT_DIG" can include the
6193 "IEEE" 754 implicit bit. The common x86-style 80-bit long double
6194 does not have an implicit bit.
6195 "longdblnanbytes"
6197 From infnan.U:
6198 This variable contains comma-separated list of hexadecimal bytes
6200 for the long double precision not-a-number.
6201 "longdblsize"
6203 From d_longdbl.U:
6204 This variable contains the value of the "LONG_DOUBLESIZE" symbol,
6206 which indicates to the C program how many bytes there are in a long
6207 double, if this system supports long doubles. Note that this is
6208 sizeof(long double), which may include unused bytes.
6209 "longlongsize"
6211 From d_longlong.U:
6212 This variable contains the value of the "LONGLONGSIZE" symbol,
6214 which indicates to the C program how many bytes there are in a long
6215 long, if this system supports long long.
6216 "longsize"
6218 From intsize.U:
6219 This variable contains the value of the "LONGSIZE" symbol, which
6221 indicates to the C program how many bytes there are in a long.
6222 "lp"
6224 From Loc.U:
6225 This variable is defined but not used by Configure. The value is
6227 the empty string and is not useful.
6228 "lpr"
6230 From Loc.U:
6231 This variable is defined but not used by Configure. The value is
6233 the empty string and is not useful.
6234 "ls"
6236 From Loc.U:
6237 This variable is used internally by Configure to determine the full
6239 pathname (if any) of the ls program. After Configure runs, the
6240 value is reset to a plain "ls" and is not useful.
6241 "lseeksize"
6243 From lseektype.U:
6244 This variable defines lseektype to be something like off_t, long,
6246 or whatever type is used to declare lseek offset's type in the
6247 kernel (which also appears to be lseek's return type).
6248 "lseektype"
6250 From lseektype.U:
6251 This variable defines lseektype to be something like off_t, long,
6253 or whatever type is used to declare lseek offset's type in the
6254 kernel (which also appears to be lseek's return type).
6255 m
6257 "mail"
6258 From Loc.U:
6259 This variable is defined but not used by Configure. The value is
6261 the empty string and is not useful.
6262 "mailx"
6264 From Loc.U:
6265 This variable is defined but not used by Configure. The value is
6267 the empty string and is not useful.
6268 "make"
6270 From Loc.U:
6271 This variable is used internally by Configure to determine the full
6273 pathname (if any) of the make program. After Configure runs, the
6274 value is reset to a plain "make" and is not useful.
6275 "make_set_make"
6277 From make.U:
6278 Some versions of "make" set the variable "MAKE". Others do not.
6280 This variable contains the string to be included in Makefile.SH so
6281 that "MAKE" is set if needed, and not if not needed. Possible
6282 values are:
6283 make_set_make="#" # If your make program handles this for
6285 you,
6286 make_set_make="MAKE=$make" # if it doesn't.
6288 This uses a comment character so that we can distinguish a "set"
6290 value (from a previous config.sh or Configure "-D" option) from an
6291 uncomputed value.
6292 "mallocobj"
6294 From mallocsrc.U:
6295 This variable contains the name of the malloc.o that this package
6297 generates, if that malloc.o is preferred over the system malloc.
6298 Otherwise the value is null. This variable is intended for
6299 generating Makefiles. See mallocsrc.
6300 "mallocsrc"
6302 From mallocsrc.U:
6303 This variable contains the name of the malloc.c that comes with the
6305 package, if that malloc.c is preferred over the system malloc.
6306 Otherwise the value is null. This variable is intended for
6307 generating Makefiles.
6308 "malloctype"
6310 From mallocsrc.U:
6311 This variable contains the kind of ptr returned by malloc and
6313 realloc.
6314 "man1dir"
6316 From man1dir.U:
6317 This variable contains the name of the directory in which manual
6319 source pages are to be put. It is the responsibility of the
6320 Makefile.SH to get the value of this into the proper command. You
6321 must be prepared to do the ~name expansion yourself.
6322 "man1direxp"
6324 From man1dir.U:
6325 This variable is the same as the man1dir variable, but is filename
6327 expanded at configuration time, for convenient use in makefiles.
6328 "man1ext"
6330 From man1dir.U:
6331 This variable contains the extension that the manual page should
6333 have: one of "n", "l", or 1. The Makefile must supply the .. See
6334 man1dir.
6335 "man3dir"
6337 From man3dir.U:
6338 This variable contains the name of the directory in which manual
6340 source pages are to be put. It is the responsibility of the
6341 Makefile.SH to get the value of this into the proper command. You
6342 must be prepared to do the ~name expansion yourself.
6343 "man3direxp"
6345 From man3dir.U:
6346 This variable is the same as the man3dir variable, but is filename
6348 expanded at configuration time, for convenient use in makefiles.
6349 "man3ext"
6351 From man3dir.U:
6352 This variable contains the extension that the manual page should
6354 have: one of "n", "l", or 3. The Makefile must supply the .. See
6355 man3dir.
6356 "mips_type"
6358 From usrinc.U:
6359 This variable holds the environment type for the mips system.
6361 Possible values are "BSD 4.3" and "System V".
6362 "mistrustnm"
6364 From Csym.U:
6365 This variable can be used to establish a fallthrough for the cases
6367 where nm fails to find a symbol. If usenm is false or usenm is
6368 true and mistrustnm is false, this variable has no effect. If
6369 usenm is true and mistrustnm is "compile", a test program will be
6370 compiled to try to find any symbol that can't be located via nm
6371 lookup. If mistrustnm is "run", the test program will be run as
6372 well as being compiled.
6373 "mkdir"
6375 From Loc.U:
6376 This variable is used internally by Configure to determine the full
6378 pathname (if any) of the mkdir program. After Configure runs, the
6379 value is reset to a plain "mkdir" and is not useful.
6380 "mmaptype"
6382 From d_mmap.U:
6383 This symbol contains the type of pointer returned by mmap() (and
6385 simultaneously the type of the first argument). It can be "void *"
6386 or "caddr_t".
6387 "modetype"
6389 From modetype.U:
6390 This variable defines modetype to be something like mode_t, int,
6392 unsigned short, or whatever type is used to declare file modes for
6393 system calls.
6394 "more"
6396 From Loc.U:
6397 This variable is used internally by Configure to determine the full
6399 pathname (if any) of the more program. After Configure runs, the
6400 value is reset to a plain "more" and is not useful.
6401 "multiarch"
6403 From multiarch.U:
6404 This variable conditionally defines the "MULTIARCH" symbol which
6406 signifies the presence of multiplatform files. This is normally
6407 set by hints files.
6408 "mv"
6410 From Loc.U:
6411 This variable is defined but not used by Configure. The value is
6413 the empty string and is not useful.
6414 "myarchname"
6416 From archname.U:
6417 This variable holds the architecture name computed by Configure in
6419 a previous run. It is not intended to be perused by any user and
6420 should never be set in a hint file.
6421 "mydomain"
6423 From myhostname.U:
6424 This variable contains the eventual value of the "MYDOMAIN" symbol,
6426 which is the domain of the host the program is going to run on.
6427 The domain must be appended to myhostname to form a complete host
6428 name. The dot comes with mydomain, and need not be supplied by the
6429 program.
6430 "myhostname"
6432 From myhostname.U:
6433 This variable contains the eventual value of the "MYHOSTNAME"
6435 symbol, which is the name of the host the program is going to run
6436 on. The domain is not kept with hostname, but must be gotten from
6437 mydomain. The dot comes with mydomain, and need not be supplied by
6438 the program.
6439 "myuname"
6441 From Oldconfig.U:
6442 The output of "uname -a" if available, otherwise the hostname. The
6444 whole thing is then lower-cased and slashes and single quotes are
6445 removed.
6446 n
6448 "n" From n.U:
6449 This variable contains the "-n" flag if that is what causes the
6451 echo command to suppress newline. Otherwise it is null. Correct
6452 usage is $echo $n "prompt for a question: $c".
6453 "need_va_copy"
6455 From need_va_copy.U:
6456 This symbol, if defined, indicates that the system stores the
6458 variable argument list datatype, va_list, in a format that cannot
6459 be copied by simple assignment, so that some other means must be
6460 used when copying is required. As such systems vary in their
6461 provision (or non-provision) of copying mechanisms, handy.h defines
6462 a platform- "independent" macro, Perl_va_copy(src, dst), to do the
6463 job.
6464 "netdb_hlen_type"
6466 From netdbtype.U:
6467 This variable holds the type used for the 2nd argument to
6469 gethostbyaddr(). Usually, this is int or size_t or unsigned. This
6470 is only useful if you have gethostbyaddr(), naturally.
6471 "netdb_host_type"
6473 From netdbtype.U:
6474 This variable holds the type used for the 1st argument to
6476 gethostbyaddr(). Usually, this is char * or void *, possibly with
6477 or without a const prefix. This is only useful if you have
6478 gethostbyaddr(), naturally.
6479 "netdb_name_type"
6481 From netdbtype.U:
6482 This variable holds the type used for the argument to
6484 gethostbyname(). Usually, this is char * or const char *. This is
6485 only useful if you have gethostbyname(), naturally.
6486 "netdb_net_type"
6488 From netdbtype.U:
6489 This variable holds the type used for the 1st argument to
6491 getnetbyaddr(). Usually, this is int or long. This is only useful
6492 if you have getnetbyaddr(), naturally.
6493 "nm"
6495 From Loc.U:
6496 This variable is used internally by Configure to determine the full
6498 pathname (if any) of the nm program. After Configure runs, the
6499 value is reset to a plain "nm" and is not useful.
6500 "nm_opt"
6502 From usenm.U:
6503 This variable holds the options that may be necessary for nm.
6505 "nm_so_opt"
6507 From usenm.U:
6508 This variable holds the options that may be necessary for nm to
6510 work on a shared library but that can not be used on an archive
6511 library. Currently, this is only used by Linux, where nm --dynamic
6512 is *required* to get symbols from an "ELF" library which has been
6513 stripped, but nm --dynamic is *fatal* on an archive library. Maybe
6514 Linux should just always set usenm=false.
6515 "nonxs_ext"
6517 From Extensions.U:
6518 This variable holds a list of all non-xs extensions built and
6520 installed by the package. By default, all non-xs extensions
6521 distributed will be built, with the exception of platform-specific
6522 extensions (currently only one "VMS" specific extension).
6523 "nroff"
6525 From Loc.U:
6526 This variable is used internally by Configure to determine the full
6528 pathname (if any) of the nroff program. After Configure runs, the
6529 value is reset to a plain "nroff" and is not useful.
6530 "nv_overflows_integers_at"
6532 From perlxv.U:
6533 This variable gives the largest integer value that NVs can hold as
6535 a constant floating point expression. If it could not be
6536 determined, it holds the value 0.
6537 "nv_preserves_uv_bits"
6539 From perlxv.U:
6540 This variable indicates how many of bits type uvtype a variable
6542 nvtype can preserve.
6543 "nveformat"
6545 From perlxvf.U:
6546 This variable contains the format string used for printing a Perl
6548 "NV" using %e-ish floating point format.
6549 "nvEUformat"
6551 From perlxvf.U:
6552 This variable contains the format string used for printing a Perl
6554 "NV" using %E-ish floating point format.
6555 "nvfformat"
6557 From perlxvf.U:
6558 This variable contains the format string used for printing a Perl
6560 "NV" using %f-ish floating point format.
6561 "nvFUformat"
6563 From perlxvf.U:
6564 This variable contains the format string used for printing a Perl
6566 "NV" using %F-ish floating point format.
6567 "nvgformat"
6569 From perlxvf.U:
6570 This variable contains the format string used for printing a Perl
6572 "NV" using %g-ish floating point format.
6573 "nvGUformat"
6575 From perlxvf.U:
6576 This variable contains the format string used for printing a Perl
6578 "NV" using %G-ish floating point format.
6579 "nvmantbits"
6581 From mantbits.U:
6582 This variable tells how many bits the mantissa of a Perl "NV" has,
6584 not including the possible implicit bit.
6585 "nvsize"
6587 From perlxv.U:
6588 This variable is the size of a Perl "NV" in bytes. Note that some
6590 floating point formats have unused bytes.
6591 "nvtype"
6593 From perlxv.U:
6594 This variable contains the C type used for Perl's "NV".
6596 o
6598 "o_nonblock"
6599 From nblock_io.U:
6600 This variable bears the symbol value to be used during open() or
6602 fcntl() to turn on non-blocking I/O for a file descriptor. If you
6603 wish to switch between blocking and non-blocking, you may try
6604 ioctl("FIOSNBIO") instead, but that is only supported by some
6605 devices.
6606 "obj_ext"
6608 From Unix.U:
6609 This is an old synonym for _o.
6611 "old_pthread_create_joinable"
6613 From d_pthrattrj.U:
6614 This variable defines the constant to use for creating joinable
6616 (aka undetached) pthreads. Unused if pthread.h defines
6617 "PTHREAD_CREATE_JOINABLE". If used, possible values are
6618 "PTHREAD_CREATE_UNDETACHED" and "__UNDETACHED".
6619 "optimize"
6621 From ccflags.U:
6622 This variable contains any optimizer/debugger flag that should be
6624 used. It is up to the Makefile to use it.
6625 "orderlib"
6627 From orderlib.U:
6628 This variable is "true" if the components of libraries must be
6630 ordered (with `lorder $* | tsort`) before placing them in an
6631 archive. Set to "false" if ranlib or ar can generate random
6632 libraries.
6633 "osname"
6635 From Oldconfig.U:
6636 This variable contains the operating system name (e.g. sunos,
6638 solaris, hpux, etc.). It can be useful later on for setting
6639 defaults. Any spaces are replaced with underscores. It is set to
6640 a null string if we can't figure it out.
6641 "osvers"
6643 From Oldconfig.U:
6644 This variable contains the operating system version (e.g. 4.1.3,
6646 5.2, etc.). It is primarily used for helping select an appropriate
6647 hints file, but might be useful elsewhere for setting defaults. It
6648 is set to '' if we can't figure it out. We try to be flexible
6649 about how much of the version number to keep, e.g. if 4.1.1, 4.1.2,
6650 and 4.1.3 are essentially the same for this package, hints files
6651 might just be os_4.0 or os_4.1, etc., not keeping separate files
6652 for each little release.
6653 "otherlibdirs"
6655 From otherlibdirs.U:
6656 This variable contains a colon-separated set of paths for the perl
6658 binary to search for additional library files or modules. These
6659 directories will be tacked to the end of @"INC". Perl will
6660 automatically search below each path for version- and architecture-
6661 specific directories. See inc_version_list for more details. A
6662 value of " " means "none" and is used to preserve this value for
6663 the next run through Configure.
6664 p
6666 "package"
6667 From package.U:
6668 This variable contains the name of the package being constructed.
6670 It is primarily intended for the use of later Configure units.
6671 "pager"
6673 From pager.U:
6674 This variable contains the name of the preferred pager on the
6676 system. Usual values are (the full pathnames of) more, less, pg,
6677 or cat.
6678 "passcat"
6680 From nis.U:
6681 This variable contains a command that produces the text of the
6683 /etc/passwd file. This is normally "cat /etc/passwd", but can be
6684 "ypcat passwd" when "NIS" is used. On some systems, such as os390,
6685 there may be no equivalent command, in which case this variable is
6686 unset.
6687 "patchlevel"
6689 From patchlevel.U:
6690 The patchlevel level of this package. The value of patchlevel
6692 comes from the patchlevel.h file. In a version number such as
6693 5.6.1, this is the 6. In patchlevel.h, this is referred to as
6694 "PERL_VERSION".
6695 "path_sep"
6697 From Unix.U:
6698 This is an old synonym for p_ in Head.U, the character used to
6700 separate elements in the command shell search "PATH".
6701 "perl"
6703 From Loc.U:
6704 This variable is used internally by Configure to determine the full
6706 pathname (if any) of the perl program. After Configure runs, the
6707 value is reset to a plain "perl" and is not useful.
6708 "perl5"
6710 From perl5.U:
6711 This variable contains the full path (if any) to a previously
6713 installed perl5.005 or later suitable for running the script to
6714 determine inc_version_list.
6715 P
6717 "PERL_API_REVISION"
6718 From patchlevel.h:
6719 This number describes the earliest compatible "PERL_REVISION" of
6721 Perl ("compatibility" here being defined as sufficient binary/"API"
6722 compatibility to run "XS" code built with the older version).
6723 Normally this does not change across maintenance releases. Please
6724 read the comment in patchlevel.h.
6725 "PERL_API_SUBVERSION"
6727 From patchlevel.h:
6728 This number describes the earliest compatible "PERL_SUBVERSION" of
6730 Perl ("compatibility" here being defined as sufficient binary/"API"
6731 compatibility to run "XS" code built with the older version).
6732 Normally this does not change across maintenance releases. Please
6733 read the comment in patchlevel.h.
6734 "PERL_API_VERSION"
6736 From patchlevel.h:
6737 This number describes the earliest compatible "PERL_VERSION" of
6739 Perl ("compatibility" here being defined as sufficient binary/"API"
6740 compatibility to run "XS" code built with the older version).
6741 Normally this does not change across maintenance releases. Please
6742 read the comment in patchlevel.h.
6743 "PERL_CONFIG_SH"
6745 From Oldsyms.U:
6746 This is set to "true" in config.sh so that a shell script sourcing
6748 config.sh can tell if it has been sourced already.
6749 "PERL_PATCHLEVEL"
6751 From Oldsyms.U:
6752 This symbol reflects the patchlevel, if available. Will usually
6754 come from the .patch file, which is available when the perl source
6755 tree was fetched with rsync.
6756 "perl_patchlevel"
6758 From patchlevel.U:
6759 This is the Perl patch level, a numeric change identifier, as
6761 defined by whichever source code maintenance system is used to
6762 maintain the patches; currently Perforce. It does not correlate
6763 with the Perl version numbers or the maintenance versus development
6764 dichotomy except by also being increasing.
6765 "PERL_REVISION"
6767 From Oldsyms.U:
6768 In a Perl version number such as 5.6.2, this is the 5. This value
6770 is manually set in patchlevel.h
6771 "perl_static_inline"
6773 From d_static_inline.U:
6774 This variable defines the "PERL_STATIC_INLINE" symbol to the best-
6776 guess incantation to use for static inline functions.
6777 Possibilities include static inline (c99) static __inline__
6778 (gcc -ansi) static __inline ("MSVC") static _inline (older
6779 "MSVC") static (c89 compilers)
6780 "PERL_SUBVERSION"
6782 From Oldsyms.U:
6783 In a Perl version number such as 5.6.2, this is the 2. Values
6785 greater than 50 represent potentially unstable development
6786 subversions. This value is manually set in patchlevel.h
6787 "PERL_VERSION"
6789 From Oldsyms.U:
6790 In a Perl version number such as 5.6.2, this is the 6. This value
6792 is manually set in patchlevel.h
6793 "perladmin"
6795 From perladmin.U:
6796 Electronic mail address of the perl5 administrator.
6798 "perllibs"
6800 From End.U:
6801 The list of libraries needed by Perl only (any libraries needed by
6803 extensions only will by dropped, if using dynamic loading).
6804 "perlpath"
6806 From perlpath.U:
6807 This variable contains the eventual value of the "PERLPATH" symbol,
6809 which contains the name of the perl interpreter to be used in shell
6810 scripts and in the "eval "exec"" idiom. This variable is not
6811 necessarily the pathname of the file containing the perl
6812 interpreter; you must append the executable extension (_exe) if it
6813 is not already present. Note that Perl code that runs during the
6814 Perl build process cannot reference this variable, as Perl may not
6815 have been installed, or even if installed, may be a different
6816 version of Perl.
6817 "pg"
6819 From Loc.U:
6820 This variable is used internally by Configure to determine the full
6822 pathname (if any) of the pg program. After Configure runs, the
6823 value is reset to a plain "pg" and is not useful.
6824 "phostname"
6826 From myhostname.U:
6827 This variable contains the eventual value of the "PHOSTNAME"
6829 symbol, which is a command that can be fed to popen() to get the
6830 host name. The program should probably not presume that the domain
6831 is or isn't there already.
6832 "pidtype"
6834 From pidtype.U:
6835 This variable defines "PIDTYPE" to be something like pid_t, int,
6837 ushort, or whatever type is used to declare process ids in the
6838 kernel.
6839 "plibpth"
6841 From libpth.U:
6842 Holds the private path used by Configure to find out the libraries.
6844 Its value is prepend to libpth. This variable takes care of special
6845 machines, like the mips. Usually, it should be empty.
6846 "pmake"
6848 From Loc.U:
6849 This variable is defined but not used by Configure. The value is
6851 the empty string and is not useful.
6852 "pr"
6854 From Loc.U:
6855 This variable is defined but not used by Configure. The value is
6857 the empty string and is not useful.
6858 "prefix"
6860 From prefix.U:
6861 This variable holds the name of the directory below which the user
6863 will install the package. Usually, this is /usr/local, and
6864 executables go in /usr/local/bin, library stuff in /usr/local/lib,
6865 man pages in /usr/local/man, etc. It is only used to set defaults
6866 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
6867 "prefixexp"
6869 From prefix.U:
6870 This variable holds the full absolute path of the directory below
6872 which the user will install the package. Derived from prefix.
6873 "privlib"
6875 From privlib.U:
6876 This variable contains the eventual value of the "PRIVLIB" symbol,
6878 which is the name of the private library for this package. It may
6879 have a ~ on the front. It is up to the makefile to eventually
6880 create this directory while performing installation (with ~
6881 substitution).
6882 "privlibexp"
6884 From privlib.U:
6885 This variable is the ~name expanded version of privlib, so that you
6887 may use it directly in Makefiles or shell scripts.
6888 "procselfexe"
6890 From d_procselfexe.U:
6891 If d_procselfexe is defined, $procselfexe is the filename of the
6893 symbolic link pointing to the absolute pathname of the executing
6894 program.
6895 "ptrsize"
6897 From ptrsize.U:
6898 This variable contains the value of the "PTRSIZE" symbol, which
6900 indicates to the C program how many bytes there are in a pointer.
6901 q
6903 "quadkind"
6904 From quadtype.U:
6905 This variable, if defined, encodes the type of a quad: 1 = int, 2 =
6907 long, 3 = long long, 4 = int64_t.
6908 "quadtype"
6910 From quadtype.U:
6911 This variable defines Quad_t to be something like long, int, long
6913 long, int64_t, or whatever type is used for 64-bit integers.
6914 r
6916 "randbits"
6917 From randfunc.U:
6918 Indicates how many bits are produced by the function used to
6920 generate normalized random numbers.
6921 "randfunc"
6923 From randfunc.U:
6924 Indicates the name of the random number function to use. Values
6926 include drand48, random, and rand. In C programs, the "Drand01"
6927 macro is defined to generate uniformly distributed random numbers
6928 over the range [0., 1.[ (see drand01 and nrand).
6929 "random_r_proto"
6931 From d_random_r.U:
6932 This variable encodes the prototype of random_r. It is zero if
6934 d_random_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6935 of reentr.h if d_random_r is defined.
6936 "randseedtype"
6938 From randfunc.U:
6939 Indicates the type of the argument of the seedfunc.
6941 "ranlib"
6943 From orderlib.U:
6944 This variable is set to the pathname of the ranlib program, if it
6946 is needed to generate random libraries. Set to ":" if ar can
6947 generate random libraries or if random libraries are not supported
6948 "rd_nodata"
6950 From nblock_io.U:
6951 This variable holds the return code from read() when no data is
6953 present. It should be -1, but some systems return 0 when "O_NDELAY"
6954 is used, which is a shame because you cannot make the difference
6955 between no data and an EOF.. Sigh!
6956 "readdir64_r_proto"
6958 From d_readdir64_r.U:
6959 This variable encodes the prototype of readdir64_r. It is zero if
6961 d_readdir64_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6962 macros of reentr.h if d_readdir64_r is defined.
6963 "readdir_r_proto"
6965 From d_readdir_r.U:
6966 This variable encodes the prototype of readdir_r. It is zero if
6968 d_readdir_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6969 of reentr.h if d_readdir_r is defined.
6970 "revision"
6972 From patchlevel.U:
6973 The value of revision comes from the patchlevel.h file. In a
6975 version number such as 5.6.1, this is the 5. In patchlevel.h, this
6976 is referred to as "PERL_REVISION".
6977 "rm"
6979 From Loc.U:
6980 This variable is used internally by Configure to determine the full
6982 pathname (if any) of the rm program. After Configure runs, the
6983 value is reset to a plain "rm" and is not useful.
6984 "rm_try"
6986 From Unix.U:
6987 This is a cleanup variable for try test programs. Internal
6989 Configure use only.
6990 "rmail"
6992 From Loc.U:
6993 This variable is defined but not used by Configure. The value is
6995 the empty string and is not useful.
6996 "run"
6998 From Cross.U:
6999 This variable contains the command used by Configure to copy and
7001 execute a cross-compiled executable in the target host. Useful and
7002 available only during Perl build. Empty string '' if not cross-
7003 compiling.
7004 "runnm"
7006 From usenm.U:
7007 This variable contains "true" or "false" depending whether the nm
7009 extraction should be performed or not, according to the value of
7010 usenm and the flags on the Configure command line.
7011 s
7013 "sched_yield"
7014 From d_pthread_y.U:
7015 This variable defines the way to yield the execution of the current
7017 thread.
7018 "scriptdir"
7020 From scriptdir.U:
7021 This variable holds the name of the directory in which the user
7023 wants to put publicly scripts for the package in question. It is
7024 either the same directory as for binaries, or a special one that
7025 can be mounted across different architectures, like /usr/share.
7026 Programs must be prepared to deal with ~name expansion.
7027 "scriptdirexp"
7029 From scriptdir.U:
7030 This variable is the same as scriptdir, but is filename expanded at
7032 configuration time, for programs not wanting to bother with it.
7033 "sed"
7035 From Loc.U:
7036 This variable is used internally by Configure to determine the full
7038 pathname (if any) of the sed program. After Configure runs, the
7039 value is reset to a plain "sed" and is not useful.
7040 "seedfunc"
7042 From randfunc.U:
7043 Indicates the random number generating seed function. Values
7045 include srand48, srandom, and srand.
7046 "selectminbits"
7048 From selectminbits.U:
7049 This variable holds the minimum number of bits operated by select.
7051 That is, if you do select(n, ...), how many bits at least will be
7052 cleared in the masks if some activity is detected. Usually this is
7053 either n or 32*ceil(n/32), especially many little-endians do the
7054 latter. This is only useful if you have select(), naturally.
7055 "selecttype"
7057 From selecttype.U:
7058 This variable holds the type used for the 2nd, 3rd, and 4th
7060 arguments to select. Usually, this is "fd_set *", if "HAS_FD_SET"
7061 is defined, and "int *" otherwise. This is only useful if you have
7062 select(), naturally.
7063 "sendmail"
7065 From Loc.U:
7066 This variable is defined but not used by Configure. The value is
7068 the empty string and is not useful.
7069 "setgrent_r_proto"
7071 From d_setgrent_r.U:
7072 This variable encodes the prototype of setgrent_r. It is zero if
7074 d_setgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7075 macros of reentr.h if d_setgrent_r is defined.
7076 "sethostent_r_proto"
7078 From d_sethostent_r.U:
7079 This variable encodes the prototype of sethostent_r. It is zero if
7081 d_sethostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7082 macros of reentr.h if d_sethostent_r is defined.
7083 "setlocale_r_proto"
7085 From d_setlocale_r.U:
7086 This variable encodes the prototype of setlocale_r. It is zero if
7088 d_setlocale_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7089 macros of reentr.h if d_setlocale_r is defined.
7090 "setnetent_r_proto"
7092 From d_setnetent_r.U:
7093 This variable encodes the prototype of setnetent_r. It is zero if
7095 d_setnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7096 macros of reentr.h if d_setnetent_r is defined.
7097 "setprotoent_r_proto"
7099 From d_setprotoent_r.U:
7100 This variable encodes the prototype of setprotoent_r. It is zero
7102 if d_setprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7103 macros of reentr.h if d_setprotoent_r is defined.
7104 "setpwent_r_proto"
7106 From d_setpwent_r.U:
7107 This variable encodes the prototype of setpwent_r. It is zero if
7109 d_setpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7110 macros of reentr.h if d_setpwent_r is defined.
7111 "setservent_r_proto"
7113 From d_setservent_r.U:
7114 This variable encodes the prototype of setservent_r. It is zero if
7116 d_setservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7117 macros of reentr.h if d_setservent_r is defined.
7118 "sGMTIME_max"
7120 From time_size.U:
7121 This variable defines the maximum value of the time_t offset that
7123 the system function gmtime () accepts
7124 "sGMTIME_min"
7126 From time_size.U:
7127 This variable defines the minimum value of the time_t offset that
7129 the system function gmtime () accepts
7130 "sh"
7132 From sh.U:
7133 This variable contains the full pathname of the shell used on this
7135 system to execute Bourne shell scripts. Usually, this will be
7136 /bin/sh, though it's possible that some systems will have /bin/ksh,
7137 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
7138 D:/bin/sh.exe. This unit comes before Options.U, so you can't set
7139 sh with a "-D" option, though you can override this (and startsh)
7140 with "-O -Dsh=/bin/whatever -Dstartsh=whatever"
7141 "shar"
7143 From Loc.U:
7144 This variable is defined but not used by Configure. The value is
7146 the empty string and is not useful.
7147 "sharpbang"
7149 From spitshell.U:
7150 This variable contains the string #! if this system supports that
7152 construct.
7153 "shmattype"
7155 From d_shmat.U:
7156 This symbol contains the type of pointer returned by shmat(). It
7158 can be "void *" or "char *".
7159 "shortsize"
7161 From intsize.U:
7162 This variable contains the value of the "SHORTSIZE" symbol which
7164 indicates to the C program how many bytes there are in a short.
7165 "shrpenv"
7167 From libperl.U:
7168 If the user builds a shared libperl.so, then we need to tell the
7170 "perl" executable where it will be able to find the installed
7171 libperl.so. One way to do this on some systems is to set the
7172 environment variable "LD_RUN_PATH" to the directory that will be
7173 the final location of the shared libperl.so. The makefile can use
7174 this with something like $shrpenv $("CC") -o perl perlmain.o
7175 $libperl $libs Typical values are shrpenv="env
7176 "LD_RUN_PATH"=$archlibexp/"CORE"" or shrpenv='' See the main perl
7177 Makefile.SH for actual working usage.
7178 Alternatively, we might be able to use a command line option such
7180 as -R $archlibexp/"CORE" (Solaris) or -Wl,-rpath $archlibexp/"CORE"
7181 (Linux).
7182 "shsharp"
7184 From spitshell.U:
7185 This variable tells further Configure units whether your sh can
7187 handle # comments.
7188 "sig_count"
7190 From sig_name.U:
7191 This variable holds a number larger than the largest valid signal
7193 number. This is usually the same as the "NSIG" macro.
7194 "sig_name"
7196 From sig_name.U:
7197 This variable holds the signal names, space separated. The leading
7199 "SIG" in signal name is removed. A "ZERO" is prepended to the
7200 list. This is currently not used, sig_name_init is used instead.
7201 "sig_name_init"
7203 From sig_name.U:
7204 This variable holds the signal names, enclosed in double quotes and
7206 separated by commas, suitable for use in the "SIG_NAME" definition
7207 below. A "ZERO" is prepended to the list, and the list is
7208 terminated with a plain 0. The leading "SIG" in signal names is
7209 removed. See sig_num.
7210 "sig_num"
7212 From sig_name.U:
7213 This variable holds the signal numbers, space separated. A "ZERO"
7215 is prepended to the list (corresponding to the fake "SIGZERO").
7216 Those numbers correspond to the value of the signal listed in the
7217 same place within the sig_name list. This is currently not used,
7218 sig_num_init is used instead.
7219 "sig_num_init"
7221 From sig_name.U:
7222 This variable holds the signal numbers, enclosed in double quotes
7224 and separated by commas, suitable for use in the "SIG_NUM"
7225 definition below. A "ZERO" is prepended to the list, and the list
7226 is terminated with a plain 0.
7227 "sig_size"
7229 From sig_name.U:
7230 This variable contains the number of elements of the sig_name and
7232 sig_num arrays.
7233 "signal_t"
7235 From d_voidsig.U:
7236 This variable holds the type of the signal handler (void or int).
7238 "sitearch"
7240 From sitearch.U:
7241 This variable contains the eventual value of the "SITEARCH" symbol,
7243 which is the name of the private library for this package. It may
7244 have a ~ on the front. It is up to the makefile to eventually
7245 create this directory while performing installation (with ~
7246 substitution). The standard distribution will put nothing in this
7247 directory. After perl has been installed, users may install their
7248 own local architecture-dependent modules in this directory with
7249 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7250 "sitearchexp"
7252 From sitearch.U:
7253 This variable is the ~name expanded version of sitearch, so that
7255 you may use it directly in Makefiles or shell scripts.
7256 "sitebin"
7258 From sitebin.U:
7259 This variable holds the name of the directory in which the user
7261 wants to put add-on publicly executable files for the package in
7262 question. It is most often a local directory such as
7263 /usr/local/bin. Programs using this variable must be prepared to
7264 deal with ~name substitution. The standard distribution will put
7265 nothing in this directory. After perl has been installed, users
7266 may install their own local executables in this directory with
7267 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7268 "sitebinexp"
7270 From sitebin.U:
7271 This is the same as the sitebin variable, but is filename expanded
7273 at configuration time, for use in your makefiles.
7274 "sitehtml1dir"
7276 From sitehtml1dir.U:
7277 This variable contains the name of the directory in which site-
7279 specific html source pages are to be put. It is the responsibility
7280 of the Makefile.SH to get the value of this into the proper
7281 command. You must be prepared to do the ~name expansion yourself.
7282 The standard distribution will put nothing in this directory.
7283 After perl has been installed, users may install their own local
7284 html pages in this directory with MakeMaker Makefile.PL or
7285 equivalent. See "INSTALL" for details.
7286 "sitehtml1direxp"
7288 From sitehtml1dir.U:
7289 This variable is the same as the sitehtml1dir variable, but is
7291 filename expanded at configuration time, for convenient use in
7292 makefiles.
7293 "sitehtml3dir"
7295 From sitehtml3dir.U:
7296 This variable contains the name of the directory in which site-
7298 specific library html source pages are to be put. It is the
7299 responsibility of the Makefile.SH to get the value of this into the
7300 proper command. You must be prepared to do the ~name expansion
7301 yourself. The standard distribution will put nothing in this
7302 directory. After perl has been installed, users may install their
7303 own local library html pages in this directory with MakeMaker
7304 Makefile.PL or equivalent. See "INSTALL" for details.
7305 "sitehtml3direxp"
7307 From sitehtml3dir.U:
7308 This variable is the same as the sitehtml3dir variable, but is
7310 filename expanded at configuration time, for convenient use in
7311 makefiles.
7312 "sitelib"
7314 From sitelib.U:
7315 This variable contains the eventual value of the "SITELIB" symbol,
7317 which is the name of the private library for this package. It may
7318 have a ~ on the front. It is up to the makefile to eventually
7319 create this directory while performing installation (with ~
7320 substitution). The standard distribution will put nothing in this
7321 directory. After perl has been installed, users may install their
7322 own local architecture-independent modules in this directory with
7323 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7324 "sitelib_stem"
7326 From sitelib.U:
7327 This variable is $sitelibexp with any trailing version-specific
7329 component removed. The elements in inc_version_list
7330 (inc_version_list.U) can be tacked onto this variable to generate a
7331 list of directories to search.
7332 "sitelibexp"
7334 From sitelib.U:
7335 This variable is the ~name expanded version of sitelib, so that you
7337 may use it directly in Makefiles or shell scripts.
7338 "siteman1dir"
7340 From siteman1dir.U:
7341 This variable contains the name of the directory in which site-
7343 specific manual source pages are to be put. It is the
7344 responsibility of the Makefile.SH to get the value of this into the
7345 proper command. You must be prepared to do the ~name expansion
7346 yourself. The standard distribution will put nothing in this
7347 directory. After perl has been installed, users may install their
7348 own local man1 pages in this directory with MakeMaker Makefile.PL
7349 or equivalent. See "INSTALL" for details.
7350 "siteman1direxp"
7352 From siteman1dir.U:
7353 This variable is the same as the siteman1dir variable, but is
7355 filename expanded at configuration time, for convenient use in
7356 makefiles.
7357 "siteman3dir"
7359 From siteman3dir.U:
7360 This variable contains the name of the directory in which site-
7362 specific library man source pages are to be put. It is the
7363 responsibility of the Makefile.SH to get the value of this into the
7364 proper command. You must be prepared to do the ~name expansion
7365 yourself. The standard distribution will put nothing in this
7366 directory. After perl has been installed, users may install their
7367 own local man3 pages in this directory with MakeMaker Makefile.PL
7368 or equivalent. See "INSTALL" for details.
7369 "siteman3direxp"
7371 From siteman3dir.U:
7372 This variable is the same as the siteman3dir variable, but is
7374 filename expanded at configuration time, for convenient use in
7375 makefiles.
7376 "siteprefix"
7378 From siteprefix.U:
7379 This variable holds the full absolute path of the directory below
7381 which the user will install add-on packages. See "INSTALL" for
7382 usage and examples.
7383 "siteprefixexp"
7385 From siteprefix.U:
7386 This variable holds the full absolute path of the directory below
7388 which the user will install add-on packages. Derived from
7389 siteprefix.
7390 "sitescript"
7392 From sitescript.U:
7393 This variable holds the name of the directory in which the user
7395 wants to put add-on publicly executable files for the package in
7396 question. It is most often a local directory such as
7397 /usr/local/bin. Programs using this variable must be prepared to
7398 deal with ~name substitution. The standard distribution will put
7399 nothing in this directory. After perl has been installed, users
7400 may install their own local scripts in this directory with
7401 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7402 "sitescriptexp"
7404 From sitescript.U:
7405 This is the same as the sitescript variable, but is filename
7407 expanded at configuration time, for use in your makefiles.
7408 "sizesize"
7410 From sizesize.U:
7411 This variable contains the size of a sizetype in bytes.
7413 "sizetype"
7415 From sizetype.U:
7416 This variable defines sizetype to be something like size_t,
7418 unsigned long, or whatever type is used to declare length
7419 parameters for string functions.
7420 "sleep"
7422 From Loc.U:
7423 This variable is defined but not used by Configure. The value is
7425 the empty string and is not useful.
7426 "sLOCALTIME_max"
7428 From time_size.U:
7429 This variable defines the maximum value of the time_t offset that
7431 the system function localtime () accepts
7432 "sLOCALTIME_min"
7434 From time_size.U:
7435 This variable defines the minimum value of the time_t offset that
7437 the system function localtime () accepts
7438 "smail"
7440 From Loc.U:
7441 This variable is defined but not used by Configure. The value is
7443 the empty string and is not useful.
7444 "so"
7446 From so.U:
7447 This variable holds the extension used to identify shared libraries
7449 (also known as shared objects) on the system. Usually set to "so".
7450 "sockethdr"
7452 From d_socket.U:
7453 This variable has any cpp "-I" flags needed for socket support.
7455 "socketlib"
7457 From d_socket.U:
7458 This variable has the names of any libraries needed for socket
7460 support.
7461 "socksizetype"
7463 From socksizetype.U:
7464 This variable holds the type used for the size argument for various
7466 socket calls like accept. Usual values include socklen_t, size_t,
7467 and int.
7468 "sort"
7470 From Loc.U:
7471 This variable is used internally by Configure to determine the full
7473 pathname (if any) of the sort program. After Configure runs, the
7474 value is reset to a plain "sort" and is not useful.
7475 "spackage"
7477 From package.U:
7478 This variable contains the name of the package being constructed,
7480 with the first letter uppercased, i.e. suitable for starting
7481 sentences.
7482 "spitshell"
7484 From spitshell.U:
7485 This variable contains the command necessary to spit out a runnable
7487 shell on this system. It is either cat or a grep "-v" for #
7488 comments.
7489 "sPRId64"
7491 From quadfio.U:
7492 This variable, if defined, contains the string used by stdio to
7494 format 64-bit decimal numbers (format "d") for output.
7495 "sPRIeldbl"
7497 From longdblfio.U:
7498 This variable, if defined, contains the string used by stdio to
7500 format long doubles (format "e") for output.
7501 "sPRIEUldbl"
7503 From longdblfio.U:
7504 This variable, if defined, contains the string used by stdio to
7506 format long doubles (format "E") for output. The "U" in the name
7507 is to separate this from sPRIeldbl so that even case-blind systems
7508 can see the difference.
7509 "sPRIfldbl"
7511 From longdblfio.U:
7512 This variable, if defined, contains the string used by stdio to
7514 format long doubles (format "f") for output.
7515 "sPRIFUldbl"
7517 From longdblfio.U:
7518 This variable, if defined, contains the string used by stdio to
7520 format long doubles (format "F") for output. The "U" in the name
7521 is to separate this from sPRIfldbl so that even case-blind systems
7522 can see the difference.
7523 "sPRIgldbl"
7525 From longdblfio.U:
7526 This variable, if defined, contains the string used by stdio to
7528 format long doubles (format "g") for output.
7529 "sPRIGUldbl"
7531 From longdblfio.U:
7532 This variable, if defined, contains the string used by stdio to
7534 format long doubles (format "G") for output. The "U" in the name
7535 is to separate this from sPRIgldbl so that even case-blind systems
7536 can see the difference.
7537 "sPRIi64"
7539 From quadfio.U:
7540 This variable, if defined, contains the string used by stdio to
7542 format 64-bit decimal numbers (format "i") for output.
7543 "sPRIo64"
7545 From quadfio.U:
7546 This variable, if defined, contains the string used by stdio to
7548 format 64-bit octal numbers (format "o") for output.
7549 "sPRIu64"
7551 From quadfio.U:
7552 This variable, if defined, contains the string used by stdio to
7554 format 64-bit unsigned decimal numbers (format "u") for output.
7555 "sPRIx64"
7557 From quadfio.U:
7558 This variable, if defined, contains the string used by stdio to
7560 format 64-bit hexadecimal numbers (format "x") for output.
7561 "sPRIXU64"
7563 From quadfio.U:
7564 This variable, if defined, contains the string used by stdio to
7566 format 64-bit hExADECimAl numbers (format "X") for output. The "U"
7567 in the name is to separate this from sPRIx64 so that even case-
7568 blind systems can see the difference.
7569 "srand48_r_proto"
7571 From d_srand48_r.U:
7572 This variable encodes the prototype of srand48_r. It is zero if
7574 d_srand48_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7575 of reentr.h if d_srand48_r is defined.
7576 "srandom_r_proto"
7578 From d_srandom_r.U:
7579 This variable encodes the prototype of srandom_r. It is zero if
7581 d_srandom_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7582 of reentr.h if d_srandom_r is defined.
7583 "src"
7585 From src.U:
7586 This variable holds the (possibly relative) path of the package
7588 source. It is up to the Makefile to use this variable and set
7589 "VPATH" accordingly to find the sources remotely. Use $pkgsrc to
7590 have an absolute path.
7591 "sSCNfldbl"
7593 From longdblfio.U:
7594 This variable, if defined, contains the string used by stdio to
7596 format long doubles (format "f") for input.
7597 "ssizetype"
7599 From ssizetype.U:
7600 This variable defines ssizetype to be something like ssize_t, long
7602 or int. It is used by functions that return a count of bytes or an
7603 error condition. It must be a signed type. We will pick a type
7604 such that sizeof(SSize_t) == sizeof(Size_t).
7605 "st_ino_sign"
7607 From st_ino_def.U:
7608 This variable contains the signedness of struct stat's st_ino. 1
7610 for unsigned, -1 for signed.
7611 "st_ino_size"
7613 From st_ino_def.U:
7614 This variable contains the size of struct stat's st_ino in bytes.
7616 "startperl"
7618 From startperl.U:
7619 This variable contains the string to put on the front of a perl
7621 script to make sure (hopefully) that it runs with perl and not some
7622 shell. Of course, that leading line must be followed by the
7623 classical perl idiom: eval 'exec perl -S $0 ${1+$@}' if
7624 $running_under_some_shell; to guarantee perl startup should the
7625 shell execute the script. Note that this magic incantation is not
7626 understood by csh.
7627 "startsh"
7629 From startsh.U:
7630 This variable contains the string to put on the front of a shell
7632 script to make sure (hopefully) that it runs with sh and not some
7633 other shell.
7634 "static_ext"
7636 From Extensions.U:
7637 This variable holds a list of "XS" extension files we want to link
7639 statically into the package. It is used by Makefile.
7640 "stdchar"
7642 From stdchar.U:
7643 This variable conditionally defines "STDCHAR" to be the type of
7645 char used in stdio.h. It has the values "unsigned char" or "char".
7646 "stdio_base"
7648 From d_stdstdio.U:
7649 This variable defines how, given a "FILE" pointer, fp, to access
7651 the _base field (or equivalent) of stdio.h's "FILE" structure.
7652 This will be used to define the macro FILE_base(fp).
7653 "stdio_bufsiz"
7655 From d_stdstdio.U:
7656 This variable defines how, given a "FILE" pointer, fp, to determine
7658 the number of bytes store in the I/O buffer pointer to by the _base
7659 field (or equivalent) of stdio.h's "FILE" structure. This will be
7660 used to define the macro FILE_bufsiz(fp).
7661 "stdio_cnt"
7663 From d_stdstdio.U:
7664 This variable defines how, given a "FILE" pointer, fp, to access
7666 the _cnt field (or equivalent) of stdio.h's "FILE" structure. This
7667 will be used to define the macro FILE_cnt(fp).
7668 "stdio_filbuf"
7670 From d_stdstdio.U:
7671 This variable defines how, given a "FILE" pointer, fp, to tell
7673 stdio to refill its internal buffers (?). This will be used to
7674 define the macro FILE_filbuf(fp).
7675 "stdio_ptr"
7677 From d_stdstdio.U:
7678 This variable defines how, given a "FILE" pointer, fp, to access
7680 the _ptr field (or equivalent) of stdio.h's "FILE" structure. This
7681 will be used to define the macro FILE_ptr(fp).
7682 "stdio_stream_array"
7684 From stdio_streams.U:
7685 This variable tells the name of the array holding the stdio
7687 streams. Usual values include _iob, __iob, and __sF.
7688 "strerror_r_proto"
7690 From d_strerror_r.U:
7691 This variable encodes the prototype of strerror_r. It is zero if
7693 d_strerror_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7694 macros of reentr.h if d_strerror_r is defined.
7695 "submit"
7697 From Loc.U:
7698 This variable is defined but not used by Configure. The value is
7700 the empty string and is not useful.
7701 "subversion"
7703 From patchlevel.U:
7704 The subversion level of this package. The value of subversion
7706 comes from the patchlevel.h file. In a version number such as
7707 5.6.1, this is the 1. In patchlevel.h, this is referred to as
7708 "PERL_SUBVERSION". This is unique to perl.
7709 "sysman"
7711 From sysman.U:
7712 This variable holds the place where the manual is located on this
7714 system. It is not the place where the user wants to put his manual
7715 pages. Rather it is the place where Configure may look to find
7716 manual for unix commands (section 1 of the manual usually). See
7717 mansrc.
7718 "sysroot"
7720 From Sysroot.U:
7721 This variable is empty unless supplied by the Configure user. It
7723 can contain a path to an alternative root directory, under which
7724 headers and libraries for the compilation target can be found. This
7725 is generally used when cross-compiling using a gcc-like compiler.
7726 t
7728 "tail"
7729 From Loc.U:
7730 This variable is defined but not used by Configure. The value is
7732 the empty string and is not useful.
7733 "tar"
7735 From Loc.U:
7736 This variable is defined but not used by Configure. The value is
7738 the empty string and is not useful.
7739 "targetarch"
7741 From Cross.U:
7742 If cross-compiling, this variable contains the target architecture.
7744 If not, this will be empty.
7745 "targetdir"
7747 From Cross.U:
7748 This variable contains a path that will be created on the target
7750 host using targetmkdir, and then used to copy the cross-compiled
7751 executables to. Defaults to /tmp if not set.
7752 "targetenv"
7754 From Cross.U:
7755 If cross-compiling, this variable can be used to modify the
7757 environment on the target system. However, how and where it's
7758 used, and even if it's used at all, is entirely dependent on both
7759 the transport mechanism (targetrun) and what the target system is.
7760 Unless the relevant documentation says otherwise, it is genereally
7761 not useful.
7762 "targethost"
7764 From Cross.U:
7765 This variable contains the name of a separate host machine that can
7767 be used to run compiled test programs and perl tests on. Set to
7768 empty string if not in use.
7769 "targetmkdir"
7771 From Cross.U:
7772 This variable contains the command used by Configure to create a
7774 new directory on the target host.
7775 "targetport"
7777 From Cross.U:
7778 This variable contains the number of a network port to be used to
7780 connect to the host in targethost, if unset defaults to 22 for ssh.
7781 "targetsh"
7783 From sh.U:
7784 If cross-compiling, this variable contains the location of sh on
7786 the target system. If not, this will be the same as $sh.
7787 "tbl"
7789 From Loc.U:
7790 This variable is defined but not used by Configure. The value is
7792 the empty string and is not useful.
7793 "tee"
7795 From Loc.U:
7796 This variable is defined but not used by Configure. The value is
7798 the empty string and is not useful.
7799 "test"
7801 From Loc.U:
7802 This variable is used internally by Configure to determine the full
7804 pathname (if any) of the test program. After Configure runs, the
7805 value is reset to a plain "test" and is not useful.
7806 "timeincl"
7808 From i_time.U:
7809 This variable holds the full path of the included time header(s).
7811 "timetype"
7813 From d_time.U:
7814 This variable holds the type returned by time(). It can be long, or
7816 time_t on "BSD" sites (in which case <sys/types.h> should be
7817 included). Anyway, the type Time_t should be used.
7818 "tmpnam_r_proto"
7820 From d_tmpnam_r.U:
7821 This variable encodes the prototype of tmpnam_r. It is zero if
7823 d_tmpnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7824 of reentr.h if d_tmpnam_r is defined.
7825 "to"
7827 From Cross.U:
7828 This variable contains the command used by Configure to copy to
7830 from the target host. Useful and available only during Perl build.
7831 The string ":" if not cross-compiling.
7832 "touch"
7834 From Loc.U:
7835 This variable is used internally by Configure to determine the full
7837 pathname (if any) of the touch program. After Configure runs, the
7838 value is reset to a plain "touch" and is not useful.
7839 "tr"
7841 From Loc.U:
7842 This variable is used internally by Configure to determine the full
7844 pathname (if any) of the tr program. After Configure runs, the
7845 value is reset to a plain "tr" and is not useful.
7846 "trnl"
7848 From trnl.U:
7849 This variable contains the value to be passed to the tr(1) command
7851 to transliterate a newline. Typical values are "\012" and "\n".
7852 This is needed for "EBCDIC" systems where newline is not
7853 necessarily "\012".
7854 "troff"
7856 From Loc.U:
7857 This variable is defined but not used by Configure. The value is
7859 the empty string and is not useful.
7860 "ttyname_r_proto"
7862 From d_ttyname_r.U:
7863 This variable encodes the prototype of ttyname_r. It is zero if
7865 d_ttyname_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7866 of reentr.h if d_ttyname_r is defined.
7867 u
7869 "u16size"
7870 From perlxv.U:
7871 This variable is the size of an U16 in bytes.
7873 "u16type"
7875 From perlxv.U:
7876 This variable contains the C type used for Perl's U16.
7878 "u32size"
7880 From perlxv.U:
7881 This variable is the size of an U32 in bytes.
7883 "u32type"
7885 From perlxv.U:
7886 This variable contains the C type used for Perl's U32.
7888 "u64size"
7890 From perlxv.U:
7891 This variable is the size of an U64 in bytes.
7893 "u64type"
7895 From perlxv.U:
7896 This variable contains the C type used for Perl's U64.
7898 "u8size"
7900 From perlxv.U:
7901 This variable is the size of an U8 in bytes.
7903 "u8type"
7905 From perlxv.U:
7906 This variable contains the C type used for Perl's U8.
7908 "uidformat"
7910 From uidf.U:
7911 This variable contains the format string used for printing a Uid_t.
7913 "uidsign"
7915 From uidsign.U:
7916 This variable contains the signedness of a uidtype. 1 for
7918 unsigned, -1 for signed.
7919 "uidsize"
7921 From uidsize.U:
7922 This variable contains the size of a uidtype in bytes.
7924 "uidtype"
7926 From uidtype.U:
7927 This variable defines Uid_t to be something like uid_t, int,
7929 ushort, or whatever type is used to declare user ids in the kernel.
7930 "uname"
7932 From Loc.U:
7933 This variable is used internally by Configure to determine the full
7935 pathname (if any) of the uname program. After Configure runs, the
7936 value is reset to a plain "uname" and is not useful.
7937 "uniq"
7939 From Loc.U:
7940 This variable is used internally by Configure to determine the full
7942 pathname (if any) of the uniq program. After Configure runs, the
7943 value is reset to a plain "uniq" and is not useful.
7944 "uquadtype"
7946 From quadtype.U:
7947 This variable defines Uquad_t to be something like unsigned long,
7949 unsigned int, unsigned long long, uint64_t, or whatever type is
7950 used for 64-bit integers.
7951 "use64bitall"
7953 From use64bits.U:
7954 This variable conditionally defines the USE_64_BIT_ALL symbol, and
7956 indicates that 64-bit integer types should be used when available.
7957 The maximal possible 64-bitness is employed: LP64 or ILP64, meaning
7958 that you will be able to use more than 2 gigabytes of memory. This
7959 mode is even more binary incompatible than USE_64_BIT_INT. You may
7960 not be able to run the resulting executable in a 32-bit "CPU" at
7961 all or you may need at least to reboot your "OS" to 64-bit mode.
7962 "use64bitint"
7964 From use64bits.U:
7965 This variable conditionally defines the USE_64_BIT_INT symbol, and
7967 indicates that 64-bit integer types should be used when available.
7968 The minimal possible 64-bitness is employed, just enough to get
7969 64-bit integers into Perl. This may mean using for example "long
7970 longs", while your memory may still be limited to 2 gigabytes.
7971 "usecbacktrace"
7973 From usebacktrace.U:
7974 This variable indicates whether we are compiling with backtrace
7976 support.
7977 "usecrosscompile"
7979 From Cross.U:
7980 This variable conditionally defines the "USE_CROSS_COMPILE" symbol,
7982 and indicates that Perl has been cross-compiled.
7983 "usedefaultstrict"
7985 From usedefaultstrict.U:
7986 This setting provides a mechanism for perl developers to enable
7988 strict by default. These defaults do not apply when perl is run via
7989 -e or -E.
7990 "usedevel"
7992 From Devel.U:
7993 This variable indicates that Perl was configured with development
7995 features enabled. This should not be done for production builds.
7996 "usedl"
7998 From dlsrc.U:
7999 This variable indicates if the system supports dynamic loading of
8001 some sort. See also dlsrc and dlobj.
8002 "usedtrace"
8004 From usedtrace.U:
8005 This variable indicates whether we are compiling with dtrace
8007 support. See also dtrace.
8008 "usefaststdio"
8010 From usefaststdio.U:
8011 This variable conditionally defines the "USE_FAST_STDIO" symbol,
8013 and indicates that Perl should be built to use "fast stdio".
8014 Defaults to define in Perls 5.8 and earlier, to undef later.
8015 "useithreads"
8017 From usethreads.U:
8018 This variable conditionally defines the "USE_ITHREADS" symbol, and
8020 indicates that Perl should be built to use the interpreter-based
8021 threading implementation.
8022 "usekernprocpathname"
8024 From usekernprocpathname.U:
8025 This variable, indicates that we can use sysctl with
8027 "KERN_PROC_PATHNAME" to get a full path for the executable, and
8028 hence convert $^X to an absolute path.
8029 "uselanginfo"
8031 From Extensions.U:
8032 This variable holds either "true" or "false" to indicate whether
8034 the I18N::Langinfo extension should be used. The sole use for this
8035 currently is to allow an easy mechanism for users to skip this
8036 extension from the Configure command line.
8037 "uselargefiles"
8039 From uselfs.U:
8040 This variable conditionally defines the "USE_LARGE_FILES" symbol,
8042 and indicates that large file interfaces should be used when
8043 available.
8044 "uselongdouble"
8046 From uselongdbl.U:
8047 This variable conditionally defines the "USE_LONG_DOUBLE" symbol,
8049 and indicates that long doubles should be used when available.
8050 "usemallocwrap"
8052 From mallocsrc.U:
8053 This variable contains y if we are wrapping malloc to prevent
8055 integer overflow during size calculations.
8056 "usemorebits"
8058 From usemorebits.U:
8059 This variable conditionally defines the "USE_MORE_BITS" symbol, and
8061 indicates that explicit 64-bit interfaces and long doubles should
8062 be used when available.
8063 "usemultiplicity"
8065 From usemultiplicity.U:
8066 This variable conditionally defines the "MULTIPLICITY" symbol, and
8068 indicates that Perl should be built to use multiplicity.
8069 "usemymalloc"
8071 From mallocsrc.U:
8072 This variable contains y if the malloc that comes with this package
8074 is desired over the system's version of malloc. People often
8075 include special versions of malloc for efficiency, but such
8076 versions are often less portable. See also mallocsrc and
8077 mallocobj. If this is "y", then -lmalloc is removed from $libs.
8078 "usenm"
8080 From usenm.U:
8081 This variable contains "true" or "false" depending whether the nm
8083 extraction is wanted or not.
8084 "usensgetexecutablepath"
8086 From usensgetexecutablepath.U:
8087 This symbol, if defined, indicates that we can use
8089 _NSGetExecutablePath and realpath to get a full path for the
8090 executable, and hence convert $^X to an absolute path.
8091 "useopcode"
8093 From Extensions.U:
8094 This variable holds either "true" or "false" to indicate whether
8096 the Opcode extension should be used. The sole use for this
8097 currently is to allow an easy mechanism for users to skip the
8098 Opcode extension from the Configure command line.
8099 "useperlio"
8101 From useperlio.U:
8102 This variable conditionally defines the "USE_PERLIO" symbol, and
8104 indicates that the PerlIO abstraction should be used throughout.
8105 "useposix"
8107 From Extensions.U:
8108 This variable holds either "true" or "false" to indicate whether
8110 the "POSIX" extension should be used. The sole use for this
8111 currently is to allow an easy mechanism for hints files to indicate
8112 that "POSIX" will not compile on a particular system.
8113 "usequadmath"
8115 From usequadmath.U:
8116 This variable conditionally defines the "USE_QUADMATH" symbol, and
8118 indicates that the quadmath library __float128 long doubles should
8119 be used when available.
8120 "usereentrant"
8122 From usethreads.U:
8123 This variable conditionally defines the "USE_REENTRANT_API" symbol,
8125 which indicates that the thread code may try to use the various _r
8126 versions of library functions. This is only potentially meaningful
8127 if usethreads is set and is very experimental, it is not even
8128 prompted for.
8129 "userelocatableinc"
8131 From bin.U:
8132 This variable is set to true to indicate that perl should relocate
8134 @"INC" entries at runtime based on the path to the perl binary.
8135 Any @"INC" paths starting .../ are relocated relative to the
8136 directory containing the perl binary, and a logical cleanup of the
8137 path is then made around the join point (removing dir/../ pairs)
8138 "useshrplib"
8140 From libperl.U:
8141 This variable is set to "true" if the user wishes to build a shared
8143 libperl, and "false" otherwise.
8144 "usesitecustomize"
8146 From d_sitecustomize.U:
8147 This variable is set to true when the user requires a mechanism
8149 that allows the sysadmin to add entries to @"INC" at runtime. This
8150 variable being set, makes perl run $sitelib/sitecustomize.pl at
8151 startup.
8152 "usesocks"
8154 From usesocks.U:
8155 This variable conditionally defines the "USE_SOCKS" symbol, and
8157 indicates that Perl should be built to use "SOCKS".
8158 "usethreads"
8160 From usethreads.U:
8161 This variable conditionally defines the "USE_THREADS" symbol, and
8163 indicates that Perl should be built to use threads.
8164 "usevendorprefix"
8166 From vendorprefix.U:
8167 This variable tells whether the vendorprefix and consequently other
8169 vendor* paths are in use.
8170 "useversionedarchname"
8172 From archname.U:
8173 This variable indicates whether to include the $api_versionstring
8175 as a component of the $archname.
8176 "usevfork"
8178 From d_vfork.U:
8179 This variable is set to true when the user accepts to use vfork.
8181 It is set to false when no vfork is available or when the user
8182 explicitly requests not to use vfork.
8183 "usrinc"
8185 From usrinc.U:
8186 This variable holds the path of the include files, which is usually
8188 /usr/include. It is mainly used by other Configure units.
8189 "uuname"
8191 From Loc.U:
8192 This variable is defined but not used by Configure. The value is
8194 the empty string and is not useful.
8195 "uvoformat"
8197 From perlxvf.U:
8198 This variable contains the format string used for printing a Perl
8200 "UV" as an unsigned octal integer.
8201 "uvsize"
8203 From perlxv.U:
8204 This variable is the size of a "UV" in bytes.
8206 "uvtype"
8208 From perlxv.U:
8209 This variable contains the C type used for Perl's "UV".
8211 "uvuformat"
8213 From perlxvf.U:
8214 This variable contains the format string used for printing a Perl
8216 "UV" as an unsigned decimal integer.
8217 "uvxformat"
8219 From perlxvf.U:
8220 This variable contains the format string used for printing a Perl
8222 "UV" as an unsigned hexadecimal integer in lowercase abcdef.
8223 "uvXUformat"
8225 From perlxvf.U:
8226 This variable contains the format string used for printing a Perl
8228 "UV" as an unsigned hexadecimal integer in uppercase "ABCDEF".
8229 v
8231 "vendorarch"
8232 From vendorarch.U:
8233 This variable contains the value of the "PERL_VENDORARCH" symbol.
8235 It may have a ~ on the front. The standard distribution will put
8236 nothing in this directory. Vendors who distribute perl may wish to
8237 place their own architecture-dependent modules and extensions in
8238 this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or
8239 equivalent. See "INSTALL" for details.
8240 "vendorarchexp"
8242 From vendorarch.U:
8243 This variable is the ~name expanded version of vendorarch, so that
8245 you may use it directly in Makefiles or shell scripts.
8246 "vendorbin"
8248 From vendorbin.U:
8249 This variable contains the eventual value of the "VENDORBIN"
8251 symbol. It may have a ~ on the front. The standard distribution
8252 will put nothing in this directory. Vendors who distribute perl
8253 may wish to place additional binaries in this directory with
8254 MakeMaker Makefile.PL "INSTALLDIRS"=vendor or equivalent. See
8255 "INSTALL" for details.
8256 "vendorbinexp"
8258 From vendorbin.U:
8259 This variable is the ~name expanded version of vendorbin, so that
8261 you may use it directly in Makefiles or shell scripts.
8262 "vendorhtml1dir"
8264 From vendorhtml1dir.U:
8265 This variable contains the name of the directory for html pages.
8267 It may have a ~ on the front. The standard distribution will put
8268 nothing in this directory. Vendors who distribute perl may wish to
8269 place their own html pages in this directory with MakeMaker
8270 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
8271 details.
8272 "vendorhtml1direxp"
8274 From vendorhtml1dir.U:
8275 This variable is the ~name expanded version of vendorhtml1dir, so
8277 that you may use it directly in Makefiles or shell scripts.
8278 "vendorhtml3dir"
8280 From vendorhtml3dir.U:
8281 This variable contains the name of the directory for html library
8283 pages. It may have a ~ on the front. The standard distribution
8284 will put nothing in this directory. Vendors who distribute perl
8285 may wish to place their own html pages for modules and extensions
8286 in this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor
8287 or equivalent. See "INSTALL" for details.
8288 "vendorhtml3direxp"
8290 From vendorhtml3dir.U:
8291 This variable is the ~name expanded version of vendorhtml3dir, so
8293 that you may use it directly in Makefiles or shell scripts.
8294 "vendorlib"
8296 From vendorlib.U:
8297 This variable contains the eventual value of the "VENDORLIB"
8299 symbol, which is the name of the private library for this package.
8300 The standard distribution will put nothing in this directory.
8301 Vendors who distribute perl may wish to place their own modules in
8302 this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or
8303 equivalent. See "INSTALL" for details.
8304 "vendorlib_stem"
8306 From vendorlib.U:
8307 This variable is $vendorlibexp with any trailing version-specific
8309 component removed. The elements in inc_version_list
8310 (inc_version_list.U) can be tacked onto this variable to generate a
8311 list of directories to search.
8312 "vendorlibexp"
8314 From vendorlib.U:
8315 This variable is the ~name expanded version of vendorlib, so that
8317 you may use it directly in Makefiles or shell scripts.
8318 "vendorman1dir"
8320 From vendorman1dir.U:
8321 This variable contains the name of the directory for man1 pages.
8323 It may have a ~ on the front. The standard distribution will put
8324 nothing in this directory. Vendors who distribute perl may wish to
8325 place their own man1 pages in this directory with MakeMaker
8326 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
8327 details.
8328 "vendorman1direxp"
8330 From vendorman1dir.U:
8331 This variable is the ~name expanded version of vendorman1dir, so
8333 that you may use it directly in Makefiles or shell scripts.
8334 "vendorman3dir"
8336 From vendorman3dir.U:
8337 This variable contains the name of the directory for man3 pages.
8339 It may have a ~ on the front. The standard distribution will put
8340 nothing in this directory. Vendors who distribute perl may wish to
8341 place their own man3 pages in this directory with MakeMaker
8342 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
8343 details.
8344 "vendorman3direxp"
8346 From vendorman3dir.U:
8347 This variable is the ~name expanded version of vendorman3dir, so
8349 that you may use it directly in Makefiles or shell scripts.
8350 "vendorprefix"
8352 From vendorprefix.U:
8353 This variable holds the full absolute path of the directory below
8355 which the vendor will install add-on packages. See "INSTALL" for
8356 usage and examples.
8357 "vendorprefixexp"
8359 From vendorprefix.U:
8360 This variable holds the full absolute path of the directory below
8362 which the vendor will install add-on packages. Derived from
8363 vendorprefix.
8364 "vendorscript"
8366 From vendorscript.U:
8367 This variable contains the eventual value of the "VENDORSCRIPT"
8369 symbol. It may have a ~ on the front. The standard distribution
8370 will put nothing in this directory. Vendors who distribute perl
8371 may wish to place additional executable scripts in this directory
8372 with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or equivalent. See
8373 "INSTALL" for details.
8374 "vendorscriptexp"
8376 From vendorscript.U:
8377 This variable is the ~name expanded version of vendorscript, so
8379 that you may use it directly in Makefiles or shell scripts.
8380 "version"
8382 From patchlevel.U:
8383 The full version number of this package, such as 5.6.1 (or 5_6_1).
8385 This combines revision, patchlevel, and subversion to get the full
8386 version number, including any possible subversions. This is
8387 suitable for use as a directory name, and hence is filesystem
8388 dependent.
8389 "version_patchlevel_string"
8391 From patchlevel.U:
8392 This is a string combining version, subversion and perl_patchlevel
8394 (if perl_patchlevel is non-zero). It is typically something like
8395 'version 7 subversion 1' or 'version 7 subversion 1 patchlevel
8396 11224' It is computed here to avoid duplication of code in
8397 myconfig.SH and lib/Config.pm.
8398 "versiononly"
8400 From versiononly.U:
8401 If set, this symbol indicates that only the version-specific
8403 components of a perl installation should be installed. This may be
8404 useful for making a test installation of a new version without
8405 disturbing the existing installation. Setting versiononly is
8406 equivalent to setting installperl's -v option. In particular, the
8407 non-versioned scripts and programs such as a2p, c2ph, h2xs, pod2*,
8408 and perldoc are not installed (see "INSTALL" for a more complete
8409 list). Nor are the man pages installed. Usually, this is undef.
8410 "vi"
8412 From Loc.U:
8413 This variable is defined but not used by Configure. The value is
8415 the empty string and is not useful.
8416 x
8418 "xlibpth"
8419 From libpth.U:
8420 This variable holds extra path (space-separated) used to find
8422 libraries on this platform, for example "CPU"-specific libraries
8423 (on multi-"CPU" platforms) may be listed here.
8424 y
8426 "yacc"
8427 From yacc.U:
8428 This variable holds the name of the compiler compiler we want to
8430 use in the Makefile. It can be yacc, byacc, or bison -y.
8431 "yaccflags"
8433 From yacc.U:
8434 This variable contains any additional yacc flags desired by the
8436 user. It is up to the Makefile to use this.
8437 z
8439 "zcat"
8440 From Loc.U:
8441 This variable is defined but not used by Configure. The value is
8443 the empty string and is not useful.
8444 "zip"
8446 From Loc.U:
8447 This variable is used internally by Configure to determine the full
8449 pathname (if any) of the zip program. After Configure runs, the
8450 value is reset to a plain "zip" and is not useful.
8451
8453 Information on the git commit from which the current perl binary was
8454 compiled can be found in the variable $Config::Git_Data. The variable
8455 is a structured string that looks something like this:
8456 git_commit_id='ea0c2dbd5f5ac6845ecc7ec6696415bf8e27bd52'
8458 git_describe='GitLive-blead-1076-gea0c2db'
8459 git_branch='smartmatch'
8460 git_uncommitted_changes=''
8461 git_commit_id_title='Commit id:'
8462 git_commit_date='2009-05-09 17:47:31 +0200'
8463 Its format is not guaranteed not to change over time.
8465
8467 This module contains a good example of how to use tie to implement a
8468 cache and an example of how to make a tied variable readonly to those
8469 outside of it.
8470perl v5.34.1 2022-03-15 Config(3pm)