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_ffs"
1396 From d_ffs.U:
1397 This variable conditionally defines the "HAS_FFS" symbol, which
1399 indicates to the C program that the ffs() routine is available to
1400 find the first bit which is set in its integer argument.
1401 "d_ffsl"
1403 From d_ffs.U:
1404 This variable conditionally defines the "HAS_FFSL" symbol, which
1406 indicates to the C program that the ffsl() routine is available to
1407 find the first bit which is set in its long integer argument.
1408 "d_fgetpos"
1410 From d_fgetpos.U:
1411 This variable conditionally defines "HAS_FGETPOS" if fgetpos() is
1413 available to get the file position indicator.
1414 "d_finite"
1416 From d_finite.U:
1417 This variable conditionally defines the "HAS_FINITE" symbol, which
1419 indicates to the C program that the finite() routine is available.
1420 "d_finitel"
1422 From d_finitel.U:
1423 This variable conditionally defines the "HAS_FINITEL" symbol, which
1425 indicates to the C program that the finitel() routine is available.
1426 "d_flexfnam"
1428 From d_flexfnam.U:
1429 This variable conditionally defines the "FLEXFILENAMES" symbol,
1431 which indicates that the system supports filenames longer than 14
1432 characters.
1433 "d_flock"
1435 From d_flock.U:
1436 This variable conditionally defines "HAS_FLOCK" if flock() is
1438 available to do file locking.
1439 "d_flockproto"
1441 From d_flockproto.U:
1442 This variable conditionally defines the "HAS_FLOCK_PROTO" symbol,
1444 which indicates to the C program that the system provides a
1445 prototype for the flock() function. Otherwise, it is up to the
1446 program to supply one.
1447 "d_fma"
1449 From d_fma.U:
1450 This variable conditionally defines the "HAS_FMA" symbol, which
1452 indicates to the C program that the fma() routine is available.
1453 "d_fmax"
1455 From d_fmax.U:
1456 This variable conditionally defines the "HAS_FMAX" symbol, which
1458 indicates to the C program that the fmax() routine is available.
1459 "d_fmin"
1461 From d_fmin.U:
1462 This variable conditionally defines the "HAS_FMIN" symbol, which
1464 indicates to the C program that the fmin() routine is available.
1465 "d_fork"
1467 From d_fork.U:
1468 This variable conditionally defines the "HAS_FORK" symbol, which
1470 indicates to the C program that the fork() routine is available.
1471 "d_fp_class"
1473 From d_fp_class.U:
1474 This variable conditionally defines the "HAS_FP_CLASS" symbol,
1476 which indicates to the C program that the fp_class() routine is
1477 available.
1478 "d_fp_classify"
1480 From d_fpclassify.U:
1481 This variable conditionally defines the "HAS_FP_CLASSIFY" symbol,
1483 which indicates to the C program that the fp_classify() routine is
1484 available.
1485 "d_fp_classl"
1487 From d_fp_classl.U:
1488 This variable conditionally defines the "HAS_FP_CLASSL" symbol,
1490 which indicates to the C program that the fp_classl() routine is
1491 available.
1492 "d_fpathconf"
1494 From d_pathconf.U:
1495 This variable conditionally defines the "HAS_FPATHCONF" symbol,
1497 which indicates to the C program that the pathconf() routine is
1498 available to determine file-system related limits and options
1499 associated with a given open file descriptor.
1500 "d_fpclass"
1502 From d_fpclass.U:
1503 This variable conditionally defines the "HAS_FPCLASS" symbol, which
1505 indicates to the C program that the fpclass() routine is available.
1506 "d_fpclassify"
1508 From d_fpclassify.U:
1509 This variable conditionally defines the "HAS_FPCLASSIFY" symbol,
1511 which indicates to the C program that the fpclassify() routine is
1512 available.
1513 "d_fpclassl"
1515 From d_fpclassl.U:
1516 This variable conditionally defines the "HAS_FPCLASSL" symbol,
1518 which indicates to the C program that the fpclassl() routine is
1519 available.
1520 "d_fpgetround"
1522 From d_fpgetround.U:
1523 This variable conditionally defines "HAS_FPGETROUND" if
1525 fpgetround() is available to get the floating point rounding mode.
1526 "d_fpos64_t"
1528 From d_fpos64_t.U:
1529 This symbol will be defined if the C compiler supports fpos64_t.
1531 "d_freelocale"
1533 From d_newlocale.U:
1534 This variable conditionally defines the "HAS_FREELOCALE" symbol,
1536 which indicates to the C program that the freelocale() routine is
1537 available to deallocates the resources associated with a locale
1538 object.
1539 "d_frexpl"
1541 From d_frexpl.U:
1542 This variable conditionally defines the "HAS_FREXPL" symbol, which
1544 indicates to the C program that the frexpl() routine is available.
1545 "d_fs_data_s"
1547 From d_fs_data_s.U:
1548 This variable conditionally defines the "HAS_STRUCT_FS_DATA"
1550 symbol, which indicates that the struct fs_data is supported.
1551 "d_fseeko"
1553 From d_fseeko.U:
1554 This variable conditionally defines the "HAS_FSEEKO" symbol, which
1556 indicates to the C program that the fseeko() routine is available.
1557 "d_fsetpos"
1559 From d_fsetpos.U:
1560 This variable conditionally defines "HAS_FSETPOS" if fsetpos() is
1562 available to set the file position indicator.
1563 "d_fstatfs"
1565 From d_fstatfs.U:
1566 This variable conditionally defines the "HAS_FSTATFS" symbol, which
1568 indicates to the C program that the fstatfs() routine is available.
1569 "d_fstatvfs"
1571 From d_statvfs.U:
1572 This variable conditionally defines the "HAS_FSTATVFS" symbol,
1574 which indicates to the C program that the fstatvfs() routine is
1575 available.
1576 "d_fsync"
1578 From d_fsync.U:
1579 This variable conditionally defines the "HAS_FSYNC" symbol, which
1581 indicates to the C program that the fsync() routine is available.
1582 "d_ftello"
1584 From d_ftello.U:
1585 This variable conditionally defines the "HAS_FTELLO" symbol, which
1587 indicates to the C program that the ftello() routine is available.
1588 "d_ftime"
1590 From d_ftime.U:
1591 This variable conditionally defines the "HAS_FTIME" symbol, which
1593 indicates that the ftime() routine exists. The ftime() routine is
1594 basically a sub-second accuracy clock.
1595 "d_futimes"
1597 From d_futimes.U:
1598 This variable conditionally defines the "HAS_FUTIMES" symbol, which
1600 indicates to the C program that the futimes() routine is available.
1601 "d_gai_strerror"
1603 From d_gai_strerror.U:
1604 This variable conditionally defines the "HAS_GAI_STRERROR" symbol
1606 if the gai_strerror() routine is available and can be used to
1607 translate error codes returned by getaddrinfo() into human readable
1608 strings.
1609 "d_Gconvert"
1611 From d_gconvert.U:
1612 This variable holds what Gconvert is defined as to convert floating
1614 point numbers into strings. By default, Configure sets "this"
1615 macro to use the first of gconvert, gcvt, or sprintf that pass
1616 sprintf-%g-like behavior tests. If perl is using long doubles, the
1617 macro uses the first of the following functions that pass
1618 Configure's tests: qgcvt, sprintf (if Configure knows how to make
1619 sprintf format long doubles--see sPRIgldbl), gconvert, gcvt, and
1620 sprintf (casting to double). The gconvert_preference and
1621 gconvert_ld_preference variables can be used to alter Configure's
1622 preferences, for doubles and long doubles, respectively. If
1623 present, they contain a space-separated list of one or more of the
1624 above function names in the order they should be tried.
1625 d_Gconvert may be set to override Configure with a platform-
1627 specific function. If this function expects a double, a different
1628 value may need to be set by the uselongdouble.cbu call-back unit so
1629 that long doubles can be formatted without loss of precision.
1630 "d_gdbm_ndbm_h_uses_prototypes"
1632 From i_ndbm.U:
1633 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
1635 symbol, which indicates that the gdbm-ndbm.h include file uses real
1636 "ANSI" C prototypes instead of K&R style function declarations. K&R
1637 style declarations are unsupported in C++, so the include file
1638 requires special handling when using a C++ compiler and this
1639 variable is undefined. Consult the different
1640 d_*ndbm_h_uses_prototypes variables to get the same information for
1641 alternative ndbm.h include files.
1642 "d_gdbmndbm_h_uses_prototypes"
1644 From i_ndbm.U:
1645 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
1647 symbol, which indicates that the gdbm/ndbm.h include file uses real
1648 "ANSI" C prototypes instead of K&R style function declarations. K&R
1649 style declarations are unsupported in C++, so the include file
1650 requires special handling when using a C++ compiler and this
1651 variable is undefined. Consult the different
1652 d_*ndbm_h_uses_prototypes variables to get the same information for
1653 alternative ndbm.h include files.
1654 "d_getaddrinfo"
1656 From d_getaddrinfo.U:
1657 This variable conditionally defines the "HAS_GETADDRINFO" symbol,
1659 which indicates to the C program that the getaddrinfo() function is
1660 available.
1661 "d_getcwd"
1663 From d_getcwd.U:
1664 This variable conditionally defines the "HAS_GETCWD" symbol, which
1666 indicates to the C program that the getcwd() routine is available
1667 to get the current working directory.
1668 "d_getenv_preserves_other_thread"
1670 From d_getenv_thread.U:
1671 This variable conditionally defines the
1673 "GETENV_PRESERVES_OTHER_THREAD" symbol, which indicates to the C
1674 program that the getenv() system call does not zap the static
1675 buffer in a different thread.
1676 "d_getespwnam"
1678 From d_getespwnam.U:
1679 This variable conditionally defines "HAS_GETESPWNAM" if
1681 getespwnam() is available to retrieve enhanced (shadow) password
1682 entries by name.
1683 "d_getfsstat"
1685 From d_getfsstat.U:
1686 This variable conditionally defines the "HAS_GETFSSTAT" symbol,
1688 which indicates to the C program that the getfsstat() routine is
1689 available.
1690 "d_getgrent"
1692 From d_getgrent.U:
1693 This variable conditionally defines the "HAS_GETGRENT" symbol,
1695 which indicates to the C program that the getgrent() routine is
1696 available for sequential access of the group database.
1697 "d_getgrent_r"
1699 From d_getgrent_r.U:
1700 This variable conditionally defines the "HAS_GETGRENT_R" symbol,
1702 which indicates to the C program that the getgrent_r() routine is
1703 available.
1704 "d_getgrgid_r"
1706 From d_getgrgid_r.U:
1707 This variable conditionally defines the "HAS_GETGRGID_R" symbol,
1709 which indicates to the C program that the getgrgid_r() routine is
1710 available.
1711 "d_getgrnam_r"
1713 From d_getgrnam_r.U:
1714 This variable conditionally defines the "HAS_GETGRNAM_R" symbol,
1716 which indicates to the C program that the getgrnam_r() routine is
1717 available.
1718 "d_getgrps"
1720 From d_getgrps.U:
1721 This variable conditionally defines the "HAS_GETGROUPS" symbol,
1723 which indicates to the C program that the getgroups() routine is
1724 available to get the list of process groups.
1725 "d_gethbyaddr"
1727 From d_gethbyad.U:
1728 This variable conditionally defines the "HAS_GETHOSTBYADDR" symbol,
1730 which indicates to the C program that the gethostbyaddr() routine
1731 is available to look up hosts by their "IP" addresses.
1732 "d_gethbyname"
1734 From d_gethbynm.U:
1735 This variable conditionally defines the "HAS_GETHOSTBYNAME" symbol,
1737 which indicates to the C program that the gethostbyname() routine
1738 is available to look up host names in some data base or other.
1739 "d_gethent"
1741 From d_gethent.U:
1742 This variable conditionally defines "HAS_GETHOSTENT" if
1744 gethostent() is available to look up host names in some data base
1745 or another.
1746 "d_gethname"
1748 From d_gethname.U:
1749 This variable conditionally defines the "HAS_GETHOSTNAME" symbol,
1751 which indicates to the C program that the gethostname() routine may
1752 be used to derive the host name.
1753 "d_gethostbyaddr_r"
1755 From d_gethostbyaddr_r.U:
1756 This variable conditionally defines the "HAS_GETHOSTBYADDR_R"
1758 symbol, which indicates to the C program that the gethostbyaddr_r()
1759 routine is available.
1760 "d_gethostbyname_r"
1762 From d_gethostbyname_r.U:
1763 This variable conditionally defines the "HAS_GETHOSTBYNAME_R"
1765 symbol, which indicates to the C program that the gethostbyname_r()
1766 routine is available.
1767 "d_gethostent_r"
1769 From d_gethostent_r.U:
1770 This variable conditionally defines the "HAS_GETHOSTENT_R" symbol,
1772 which indicates to the C program that the gethostent_r() routine is
1773 available.
1774 "d_gethostprotos"
1776 From d_gethostprotos.U:
1777 This variable conditionally defines the "HAS_GETHOST_PROTOS"
1779 symbol, which indicates to the C program that <netdb.h> supplies
1780 prototypes for the various gethost*() functions. See also
1781 netdbtype.U for probing for various netdb types.
1782 "d_getitimer"
1784 From d_getitimer.U:
1785 This variable conditionally defines the "HAS_GETITIMER" symbol,
1787 which indicates to the C program that the getitimer() routine is
1788 available.
1789 "d_getlogin"
1791 From d_getlogin.U:
1792 This variable conditionally defines the "HAS_GETLOGIN" symbol,
1794 which indicates to the C program that the getlogin() routine is
1795 available to get the login name.
1796 "d_getlogin_r"
1798 From d_getlogin_r.U:
1799 This variable conditionally defines the "HAS_GETLOGIN_R" symbol,
1801 which indicates to the C program that the getlogin_r() routine is
1802 available.
1803 "d_getmnt"
1805 From d_getmnt.U:
1806 This variable conditionally defines the "HAS_GETMNT" symbol, which
1808 indicates to the C program that the getmnt() routine is available
1809 to retrieve one or more mount info blocks by filename.
1810 "d_getmntent"
1812 From d_getmntent.U:
1813 This variable conditionally defines the "HAS_GETMNTENT" symbol,
1815 which indicates to the C program that the getmntent() routine is
1816 available to iterate through mounted files to get their mount info.
1817 "d_getnameinfo"
1819 From d_getnameinfo.U:
1820 This variable conditionally defines the "HAS_GETNAMEINFO" symbol,
1822 which indicates to the C program that the getnameinfo() function is
1823 available.
1824 "d_getnbyaddr"
1826 From d_getnbyad.U:
1827 This variable conditionally defines the "HAS_GETNETBYADDR" symbol,
1829 which indicates to the C program that the getnetbyaddr() routine is
1830 available to look up networks by their "IP" addresses.
1831 "d_getnbyname"
1833 From d_getnbynm.U:
1834 This variable conditionally defines the "HAS_GETNETBYNAME" symbol,
1836 which indicates to the C program that the getnetbyname() routine is
1837 available to look up networks by their names.
1838 "d_getnent"
1840 From d_getnent.U:
1841 This variable conditionally defines "HAS_GETNETENT" if getnetent()
1843 is available to look up network names in some data base or another.
1844 "d_getnetbyaddr_r"
1846 From d_getnetbyaddr_r.U:
1847 This variable conditionally defines the "HAS_GETNETBYADDR_R"
1849 symbol, which indicates to the C program that the getnetbyaddr_r()
1850 routine is available.
1851 "d_getnetbyname_r"
1853 From d_getnetbyname_r.U:
1854 This variable conditionally defines the "HAS_GETNETBYNAME_R"
1856 symbol, which indicates to the C program that the getnetbyname_r()
1857 routine is available.
1858 "d_getnetent_r"
1860 From d_getnetent_r.U:
1861 This variable conditionally defines the "HAS_GETNETENT_R" symbol,
1863 which indicates to the C program that the getnetent_r() routine is
1864 available.
1865 "d_getnetprotos"
1867 From d_getnetprotos.U:
1868 This variable conditionally defines the "HAS_GETNET_PROTOS" symbol,
1870 which indicates to the C program that <netdb.h> supplies prototypes
1871 for the various getnet*() functions. See also netdbtype.U for
1872 probing for various netdb types.
1873 "d_getpagsz"
1875 From d_getpagsz.U:
1876 This variable conditionally defines "HAS_GETPAGESIZE" if
1878 getpagesize() is available to get the system page size.
1879 "d_getpbyname"
1881 From d_getprotby.U:
1882 This variable conditionally defines the "HAS_GETPROTOBYNAME"
1884 symbol, which indicates to the C program that the getprotobyname()
1885 routine is available to look up protocols by their name.
1886 "d_getpbynumber"
1888 From d_getprotby.U:
1889 This variable conditionally defines the "HAS_GETPROTOBYNUMBER"
1891 symbol, which indicates to the C program that the
1892 getprotobynumber() routine is available to look up protocols by
1893 their number.
1894 "d_getpent"
1896 From d_getpent.U:
1897 This variable conditionally defines "HAS_GETPROTOENT" if
1899 getprotoent() is available to look up protocols in some data base
1900 or another.
1901 "d_getpgid"
1903 From d_getpgid.U:
1904 This variable conditionally defines the "HAS_GETPGID" symbol, which
1906 indicates to the C program that the getpgid(pid) function is
1907 available to get the process group id.
1908 "d_getpgrp"
1910 From d_getpgrp.U:
1911 This variable conditionally defines "HAS_GETPGRP" if getpgrp() is
1913 available to get the current process group.
1914 "d_getpgrp2"
1916 From d_getpgrp2.U:
1917 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1919 indicates to the C program that the getpgrp2() (as in DG/"UX")
1920 routine is available to get the current process group.
1921 "d_getppid"
1923 From d_getppid.U:
1924 This variable conditionally defines the "HAS_GETPPID" symbol, which
1926 indicates to the C program that the getppid() routine is available
1927 to get the parent process "ID".
1928 "d_getprior"
1930 From d_getprior.U:
1931 This variable conditionally defines "HAS_GETPRIORITY" if
1933 getpriority() is available to get a process's priority.
1934 "d_getprotobyname_r"
1936 From d_getprotobyname_r.U:
1937 This variable conditionally defines the "HAS_GETPROTOBYNAME_R"
1939 symbol, which indicates to the C program that the
1940 getprotobyname_r() routine is available.
1941 "d_getprotobynumber_r"
1943 From d_getprotobynumber_r.U:
1944 This variable conditionally defines the "HAS_GETPROTOBYNUMBER_R"
1946 symbol, which indicates to the C program that the
1947 getprotobynumber_r() routine is available.
1948 "d_getprotoent_r"
1950 From d_getprotoent_r.U:
1951 This variable conditionally defines the "HAS_GETPROTOENT_R" symbol,
1953 which indicates to the C program that the getprotoent_r() routine
1954 is available.
1955 "d_getprotoprotos"
1957 From d_getprotoprotos.U:
1958 This variable conditionally defines the "HAS_GETPROTO_PROTOS"
1960 symbol, which indicates to the C program that <netdb.h> supplies
1961 prototypes for the various getproto*() functions. See also
1962 netdbtype.U for probing for various netdb types.
1963 "d_getprpwnam"
1965 From d_getprpwnam.U:
1966 This variable conditionally defines "HAS_GETPRPWNAM" if
1968 getprpwnam() is available to retrieve protected (shadow) password
1969 entries by name.
1970 "d_getpwent"
1972 From d_getpwent.U:
1973 This variable conditionally defines the "HAS_GETPWENT" symbol,
1975 which indicates to the C program that the getpwent() routine is
1976 available for sequential access of the passwd database.
1977 "d_getpwent_r"
1979 From d_getpwent_r.U:
1980 This variable conditionally defines the "HAS_GETPWENT_R" symbol,
1982 which indicates to the C program that the getpwent_r() routine is
1983 available.
1984 "d_getpwnam_r"
1986 From d_getpwnam_r.U:
1987 This variable conditionally defines the "HAS_GETPWNAM_R" symbol,
1989 which indicates to the C program that the getpwnam_r() routine is
1990 available.
1991 "d_getpwuid_r"
1993 From d_getpwuid_r.U:
1994 This variable conditionally defines the "HAS_GETPWUID_R" symbol,
1996 which indicates to the C program that the getpwuid_r() routine is
1997 available.
1998 "d_getsbyname"
2000 From d_getsrvby.U:
2001 This variable conditionally defines the "HAS_GETSERVBYNAME" symbol,
2003 which indicates to the C program that the getservbyname() routine
2004 is available to look up services by their name.
2005 "d_getsbyport"
2007 From d_getsrvby.U:
2008 This variable conditionally defines the "HAS_GETSERVBYPORT" symbol,
2010 which indicates to the C program that the getservbyport() routine
2011 is available to look up services by their port.
2012 "d_getsent"
2014 From d_getsent.U:
2015 This variable conditionally defines "HAS_GETSERVENT" if
2017 getservent() is available to look up network services in some data
2018 base or another.
2019 "d_getservbyname_r"
2021 From d_getservbyname_r.U:
2022 This variable conditionally defines the "HAS_GETSERVBYNAME_R"
2024 symbol, which indicates to the C program that the getservbyname_r()
2025 routine is available.
2026 "d_getservbyport_r"
2028 From d_getservbyport_r.U:
2029 This variable conditionally defines the "HAS_GETSERVBYPORT_R"
2031 symbol, which indicates to the C program that the getservbyport_r()
2032 routine is available.
2033 "d_getservent_r"
2035 From d_getservent_r.U:
2036 This variable conditionally defines the "HAS_GETSERVENT_R" symbol,
2038 which indicates to the C program that the getservent_r() routine is
2039 available.
2040 "d_getservprotos"
2042 From d_getservprotos.U:
2043 This variable conditionally defines the "HAS_GETSERV_PROTOS"
2045 symbol, which indicates to the C program that <netdb.h> supplies
2046 prototypes for the various getserv*() functions. See also
2047 netdbtype.U for probing for various netdb types.
2048 "d_getspnam"
2050 From d_getspnam.U:
2051 This variable conditionally defines "HAS_GETSPNAM" if getspnam() is
2053 available to retrieve SysV shadow password entries by name.
2054 "d_getspnam_r"
2056 From d_getspnam_r.U:
2057 This variable conditionally defines the "HAS_GETSPNAM_R" symbol,
2059 which indicates to the C program that the getspnam_r() routine is
2060 available.
2061 "d_gettimeod"
2063 From d_ftime.U:
2064 This variable conditionally defines the "HAS_GETTIMEOFDAY" symbol,
2066 which indicates that the gettimeofday() system call exists (to
2067 obtain a sub-second accuracy clock). You should probably include
2068 <sys/resource.h>.
2069 "d_gmtime64"
2071 From d_timefuncs64.U:
2072 This variable conditionally defines the HAS_GMTIME64 symbol, which
2074 indicates to the C program that the gmtime64 () routine is
2075 available.
2076 "d_gmtime_r"
2078 From d_gmtime_r.U:
2079 This variable conditionally defines the "HAS_GMTIME_R" symbol,
2081 which indicates to the C program that the gmtime_r() routine is
2082 available.
2083 "d_gnulibc"
2085 From d_gnulibc.U:
2086 Defined if we're dealing with the "GNU" C Library.
2088 "d_grpasswd"
2090 From i_grp.U:
2091 This variable conditionally defines "GRPASSWD", which indicates
2093 that struct group in <grp.h> contains gr_passwd.
2094 "d_has_C_UTF8"
2096 From d_setlocale.U:
2097 This variable is set to either "true" or "false" depending on
2099 whether the compilation system supports the C.UTF-8 locale.
2100 "d_hasmntopt"
2102 From d_hasmntopt.U:
2103 This variable conditionally defines the "HAS_HASMNTOPT" symbol,
2105 which indicates to the C program that the hasmntopt() routine is
2106 available to query the mount options of file systems.
2107 "d_htonl"
2109 From d_htonl.U:
2110 This variable conditionally defines "HAS_HTONL" if htonl() and its
2112 friends are available to do network order byte swapping.
2113 "d_hypot"
2115 From d_hypot.U:
2116 This variable conditionally defines "HAS_HYPOT" if hypot is
2118 available for numerically stable hypotenuse function.
2119 "d_ilogb"
2121 From d_ilogb.U:
2122 This variable conditionally defines the "HAS_ILOGB" symbol, which
2124 indicates to the C program that the ilogb() routine is available
2125 for extracting the exponent of double x as a signed integer.
2126 "d_ilogbl"
2128 From d_ilogbl.U:
2129 This variable conditionally defines the "HAS_ILOGBL" symbol, which
2131 indicates to the C program that the ilogbl() routine is available
2132 for extracting the exponent of long double x as a signed integer.
2133 If scalbnl is also present we can emulate frexpl.
2134 "d_inc_version_list"
2136 From inc_version_list.U:
2137 This variable conditionally defines "PERL_INC_VERSION_LIST". It is
2139 set to undef when "PERL_INC_VERSION_LIST" is empty.
2140 "d_inetaton"
2142 From d_inetaton.U:
2143 This variable conditionally defines the "HAS_INET_ATON" symbol,
2145 which indicates to the C program that the inet_aton() function is
2146 available to parse "IP" address "dotted-quad" strings.
2147 "d_inetntop"
2149 From d_inetntop.U:
2150 This variable conditionally defines the "HAS_INETNTOP" symbol,
2152 which indicates to the C program that the inet_ntop() function is
2153 available.
2154 "d_inetpton"
2156 From d_inetpton.U:
2157 This variable conditionally defines the "HAS_INETPTON" symbol,
2159 which indicates to the C program that the inet_pton() function is
2160 available.
2161 "d_int64_t"
2163 From d_int64_t.U:
2164 This symbol will be defined if the C compiler supports int64_t.
2166 "d_ip_mreq"
2168 From d_socket.U:
2169 This variable conditionally defines the "HAS_IP_MREQ" symbol, which
2171 indicates the availability of a struct ip_mreq.
2172 "d_ip_mreq_source"
2174 From d_socket.U:
2175 This variable conditionally defines the "HAS_IP_MREQ_SOURCE"
2177 symbol, which indicates the availability of a struct
2178 ip_mreq_source.
2179 "d_ipv6_mreq"
2181 From d_socket.U:
2182 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
2184 indicates the availability of a struct ipv6_mreq.
2185 "d_ipv6_mreq_source"
2187 From d_socket.U:
2188 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE
2190 symbol, which indicates the availability of a struct
2191 ipv6_mreq_source.
2192 "d_isascii"
2194 From d_isascii.U:
2195 This variable conditionally defines the "HAS_ISASCII" constant,
2197 which indicates to the C program that isascii() is available.
2198 "d_isblank"
2200 From d_isblank.U:
2201 This variable conditionally defines the "HAS_ISBLANK" constant,
2203 which indicates to the C program that isblank() is available.
2204 "d_isfinite"
2206 From d_isfinite.U:
2207 This variable conditionally defines the "HAS_ISFINITE" symbol,
2209 which indicates to the C program that the isfinite() routine is
2210 available.
2211 "d_isfinitel"
2213 From d_isfinitel.U:
2214 This variable conditionally defines the "HAS_ISFINITEL" symbol,
2216 which indicates to the C program that the isfinitel() routine is
2217 available.
2218 "d_isinf"
2220 From d_isinf.U:
2221 This variable conditionally defines the "HAS_ISINF" symbol, which
2223 indicates to the C program that the isinf() routine is available.
2224 "d_isinfl"
2226 From d_isinfl.U:
2227 This variable conditionally defines the "HAS_ISINFL" symbol, which
2229 indicates to the C program that the isinfl() routine is available.
2230 "d_isless"
2232 From d_isless.U:
2233 This variable conditionally defines the "HAS_ISLESS" symbol, which
2235 indicates to the C program that the isless() routine is available.
2236 "d_isnan"
2238 From d_isnan.U:
2239 This variable conditionally defines the "HAS_ISNAN" symbol, which
2241 indicates to the C program that the isnan() routine is available.
2242 "d_isnanl"
2244 From d_isnanl.U:
2245 This variable conditionally defines the "HAS_ISNANL" symbol, which
2247 indicates to the C program that the isnanl() routine is available.
2248 "d_isnormal"
2250 From d_isnormal.U:
2251 This variable conditionally defines the "HAS_ISNORMAL" symbol,
2253 which indicates to the C program that the isnormal() routine is
2254 available.
2255 "d_j0"
2257 From d_j0.U:
2258 This variable conditionally defines the HAS_J0 symbol, which
2260 indicates to the C program that the j0() routine is available.
2261 "d_j0l"
2263 From d_j0.U:
2264 This variable conditionally defines the HAS_J0L symbol, which
2266 indicates to the C program that the j0l() routine is available.
2267 "d_killpg"
2269 From d_killpg.U:
2270 This variable conditionally defines the "HAS_KILLPG" symbol, which
2272 indicates to the C program that the killpg() routine is available
2273 to kill process groups.
2274 "d_lc_monetary_2008"
2276 From d_lc_monetary_2008.U:
2277 This variable conditionally defines HAS_LC_MONETARY_2008 if libc
2279 has the international currency locale rules from "POSIX"
2280 1003.1-2008.
2281 "d_lchown"
2283 From d_lchown.U:
2284 This variable conditionally defines the "HAS_LCHOWN" symbol, which
2286 indicates to the C program that the lchown() routine is available
2287 to operate on a symbolic link (instead of following the link).
2288 "d_ldbl_dig"
2290 From d_ldbl_dig.U:
2291 This variable conditionally defines d_ldbl_dig if this system's
2293 header files provide "LDBL_DIG", which is the number of significant
2294 digits in a long double precision number.
2295 "d_ldexpl"
2297 From d_longdbl.U:
2298 This variable conditionally defines the "HAS_LDEXPL" symbol, which
2300 indicates to the C program that the ldexpl() routine is available.
2301 "d_lgamma"
2303 From d_lgamma.U:
2304 This variable conditionally defines the "HAS_LGAMMA" symbol, which
2306 indicates to the C program that the lgamma() routine is available
2307 for the log gamma function. See also d_tgamma and d_lgamma_r.
2308 "d_lgamma_r"
2310 From d_lgamma_r.U:
2311 This variable conditionally defines the "HAS_LGAMMA_R" symbol,
2313 which indicates to the C program that the lgamma_r() routine is
2314 available for the log gamma function, without using the global
2315 signgam variable.
2316 "d_libm_lib_version"
2318 From d_libm_lib_version.U:
2319 This variable conditionally defines the "LIBM_LIB_VERSION" symbol,
2321 which indicates to the C program that math.h defines "_LIB_VERSION"
2322 being available in libm
2323 "d_libname_unique"
2325 From so.U:
2326 This variable is defined if the target system insists on unique
2328 basenames for shared library files. This is currently true on
2329 Android, false everywhere else we know of. Defaults to "undef".
2330 "d_link"
2332 From d_link.U:
2333 This variable conditionally defines "HAS_LINK" if link() is
2335 available to create hard links.
2336 "d_linkat"
2338 From d_fsat.U:
2339 This variable conditionally defines the "HAS_LINKAT" symbol, which
2341 indicates the "POSIX" linkat() function is available.
2342 "d_llrint"
2344 From d_llrint.U:
2345 This variable conditionally defines the "HAS_LLRINT" symbol, which
2347 indicates to the C program that the llrint() routine is available
2348 to return the long long value closest to a double (according to the
2349 current rounding mode).
2350 "d_llrintl"
2352 From d_llrintl.U:
2353 This variable conditionally defines the "HAS_LLRINTL" symbol, which
2355 indicates to the C program that the llrintl() routine is available
2356 to return the long long value closest to a long double (according
2357 to the current rounding mode).
2358 "d_llround"
2360 From d_llround.U:
2361 This variable conditionally defines the "HAS_LLROUND" symbol, which
2363 indicates to the C program that the llround() routine is available
2364 to return the long long value nearest to x.
2365 "d_llroundl"
2367 From d_llroundl.U:
2368 This variable conditionally defines the "HAS_LLROUNDL" symbol,
2370 which indicates to the C program that the llroundl() routine is
2371 available to return the long long value nearest to x away from
2372 zero.
2373 "d_localeconv_l"
2375 From d_localeconv_l.U:
2376 This variable conditionally defines the "HAS_LOCALECONV_L" symbol,
2378 which indicates to the C program that the localeconv_l() routine is
2379 available.
2380 "d_localtime64"
2382 From d_timefuncs64.U:
2383 This variable conditionally defines the HAS_LOCALTIME64 symbol,
2385 which indicates to the C program that the localtime64 () routine is
2386 available.
2387 "d_localtime_r"
2389 From d_localtime_r.U:
2390 This variable conditionally defines the "HAS_LOCALTIME_R" symbol,
2392 which indicates to the C program that the localtime_r() routine is
2393 available.
2394 "d_localtime_r_needs_tzset"
2396 From d_localtime_r.U:
2397 This variable conditionally defines the "LOCALTIME_R_NEEDS_TZSET"
2399 symbol, which makes us call tzset before localtime_r()
2400 "d_locconv"
2402 From d_locconv.U:
2403 This variable conditionally defines "HAS_LOCALECONV" if
2405 localeconv() is available for numeric and monetary formatting
2406 conventions.
2407 "d_lockf"
2409 From d_lockf.U:
2410 This variable conditionally defines "HAS_LOCKF" if lockf() is
2412 available to do file locking.
2413 "d_log1p"
2415 From d_log1p.U:
2416 This variable conditionally defines the HAS_LOG1P symbol, which
2418 indicates to the C program that the logp1() routine is available to
2419 compute log(1 + x) for values of x close to zero.
2420 "d_log2"
2422 From d_log2.U:
2423 This variable conditionally defines the HAS_LOG2 symbol, which
2425 indicates to the C program that the log2() routine is available to
2426 compute log base two.
2427 "d_logb"
2429 From d_logb.U:
2430 This variable conditionally defines the "HAS_LOGB" symbol, which
2432 indicates to the C program that the logb() routine is available to
2433 extract the exponent of x.
2434 "d_long_double_style_ieee"
2436 From d_longdbl.U:
2437 This variable conditionally defines "LONG_DOUBLE_STYLE_IEEE" if the
2439 long double is any of the "IEEE" 754 style long doubles:
2440 "LONG_DOUBLE_STYLE_IEEE_STD", "LONG_DOUBLE_STYLE_IEEE_EXTENDED",
2441 "LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE".
2442 "d_long_double_style_ieee_doubledouble"
2444 From d_longdbl.U:
2445 This variable conditionally defines
2447 "LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE" if the long double is the
2448 128-bit "IEEE" 754 double-double.
2449 "d_long_double_style_ieee_extended"
2451 From d_longdbl.U:
2452 This variable conditionally defines
2454 "LONG_DOUBLE_STYLE_IEEE_EXTENDED" if the long double is the 80-bit
2455 "IEEE" 754 extended precision. Note that despite the "extended"
2456 this is less than the "std", since this is an extension of the
2457 double precision.
2458 "d_long_double_style_ieee_std"
2460 From d_longdbl.U:
2461 This variable conditionally defines "LONG_DOUBLE_STYLE_IEEE_STD" if
2463 the long double is the 128-bit "IEEE" 754.
2464 "d_long_double_style_vax"
2466 From d_longdbl.U:
2467 This variable conditionally defines "LONG_DOUBLE_STYLE_VAX" if the
2469 long double is the 128-bit "VAX" format H.
2470 "d_longdbl"
2472 From d_longdbl.U:
2473 This variable conditionally defines "HAS_LONG_DOUBLE" if the long
2475 double type is supported.
2476 "d_longlong"
2478 From d_longlong.U:
2479 This variable conditionally defines "HAS_LONG_LONG" if the long
2481 long type is supported.
2482 "d_lrint"
2484 From d_lrint.U:
2485 This variable conditionally defines the "HAS_LRINT" symbol, which
2487 indicates to the C program that the lrint() routine is available to
2488 return the integral value closest to a double (according to the
2489 current rounding mode).
2490 "d_lrintl"
2492 From d_lrintl.U:
2493 This variable conditionally defines the "HAS_LRINTL" symbol, which
2495 indicates to the C program that the lrintl() routine is available
2496 to return the integral value closest to a long double (according to
2497 the current rounding mode).
2498 "d_lround"
2500 From d_lround.U:
2501 This variable conditionally defines the "HAS_LROUND" symbol, which
2503 indicates to the C program that the lround() routine is available
2504 to return the integral value nearest to x.
2505 "d_lroundl"
2507 From d_lroundl.U:
2508 This variable conditionally defines the "HAS_LROUNDL" symbol, which
2510 indicates to the C program that the lroundl() routine is available
2511 to return the integral value nearest to x away from zero.
2512 "d_lseekproto"
2514 From d_lseekproto.U:
2515 This variable conditionally defines the "HAS_LSEEK_PROTO" symbol,
2517 which indicates to the C program that the system provides a
2518 prototype for the lseek() function. Otherwise, it is up to the
2519 program to supply one.
2520 "d_lstat"
2522 From d_lstat.U:
2523 This variable conditionally defines "HAS_LSTAT" if lstat() is
2525 available to do file stats on symbolic links.
2526 "d_madvise"
2528 From d_madvise.U:
2529 This variable conditionally defines "HAS_MADVISE" if madvise() is
2531 available to map a file into memory.
2532 "d_malloc_good_size"
2534 From d_malloc_size.U:
2535 This symbol, if defined, indicates that the malloc_good_size
2537 routine is available for use.
2538 "d_malloc_size"
2540 From d_malloc_size.U:
2541 This symbol, if defined, indicates that the malloc_size routine is
2543 available for use.
2544 "d_malloc_usable_size"
2546 From d_malloc_size.U:
2547 This symbol, if defined, indicates that the malloc_usable_size
2549 routine is available for use.
2550 "d_mblen"
2552 From d_mblen.U:
2553 This variable conditionally defines the "HAS_MBLEN" symbol, which
2555 indicates to the C program that the mblen() routine is available to
2556 find the number of bytes in a multibyte character.
2557 "d_mbrlen"
2559 From d_mbrlen.U:
2560 This variable conditionally defines the "HAS_MBRLEN" symbol if the
2562 mbrlen() routine is available to be used to get the length of
2563 multi-byte character strings.
2564 "d_mbrtowc"
2566 From d_mbrtowc.U:
2567 This variable conditionally defines the "HAS_MBRTOWC" symbol if the
2569 mbrtowc() routine is available to be used to convert a multi-byte
2570 character into a wide character.
2571 "d_mbstowcs"
2573 From d_mbstowcs.U:
2574 This variable conditionally defines the "HAS_MBSTOWCS" symbol,
2576 which indicates to the C program that the mbstowcs() routine is
2577 available to convert a multibyte string into a wide character
2578 string.
2579 "d_mbtowc"
2581 From d_mbtowc.U:
2582 This variable conditionally defines the "HAS_MBTOWC" symbol, which
2584 indicates to the C program that the mbtowc() routine is available
2585 to convert multibyte to a wide character.
2586 "d_memmem"
2588 From d_memmem.U:
2589 This variable conditionally defines the "HAS_MEMMEM" symbol, which
2591 indicates to the C program that the memmem() routine is available
2592 to return a pointer to the start of the first occurrence of a
2593 substring in a memory area (or "NULL" if not found).
2594 "d_memrchr"
2596 From d_memrchr.U:
2597 This variable conditionally defines the "HAS_MEMRCHR" symbol, which
2599 indicates to the C program that the memrchr() routine is available
2600 to return a pointer to the last occurrence of a byte in a memory
2601 area (or "NULL" if not found).
2602 "d_mkdir"
2604 From d_mkdir.U:
2605 This variable conditionally defines the "HAS_MKDIR" symbol, which
2607 indicates to the C program that the mkdir() routine is available to
2608 create directories..
2609 "d_mkdtemp"
2611 From d_mkdtemp.U:
2612 This variable conditionally defines the "HAS_MKDTEMP" symbol, which
2614 indicates to the C program that the mkdtemp() routine is available
2615 to exclusively create a uniquely named temporary directory.
2616 "d_mkfifo"
2618 From d_mkfifo.U:
2619 This variable conditionally defines the "HAS_MKFIFO" symbol, which
2621 indicates to the C program that the mkfifo() routine is available.
2622 "d_mkostemp"
2624 From d_mkostemp.U:
2625 This variable conditionally defines "HAS_MKOSTEMP" if mkostemp() is
2627 available to exclusively create and open a uniquely named (with a
2628 suffix) temporary file.
2629 "d_mkstemp"
2631 From d_mkstemp.U:
2632 This variable conditionally defines the "HAS_MKSTEMP" symbol, which
2634 indicates to the C program that the mkstemp() routine is available
2635 to exclusively create and open a uniquely named temporary file.
2636 "d_mkstemps"
2638 From d_mkstemps.U:
2639 This variable conditionally defines the "HAS_MKSTEMPS" symbol,
2641 which indicates to the C program that the mkstemps() routine is
2642 available to exclusively create and open a uniquely named (with a
2643 suffix) temporary file.
2644 "d_mktime"
2646 From d_mktime.U:
2647 This variable conditionally defines the "HAS_MKTIME" symbol, which
2649 indicates to the C program that the mktime() routine is available.
2650 "d_mktime64"
2652 From d_timefuncs64.U:
2653 This variable conditionally defines the HAS_MKTIME64 symbol, which
2655 indicates to the C program that the mktime64 () routine is
2656 available.
2657 "d_mmap"
2659 From d_mmap.U:
2660 This variable conditionally defines "HAS_MMAP" if mmap() is
2662 available to map a file into memory.
2663 "d_modfl"
2665 From d_modfl.U:
2666 This variable conditionally defines the "HAS_MODFL" symbol, which
2668 indicates to the C program that the modfl() routine is available.
2669 "d_modflproto"
2671 From d_modfl.U:
2672 This symbol, if defined, indicates that the system provides a
2674 prototype for the modfl() function. Otherwise, it is up to the
2675 program to supply one. C99 says it should be long double
2676 modfl(long double, long double *);
2677 "d_mprotect"
2679 From d_mprotect.U:
2680 This variable conditionally defines "HAS_MPROTECT" if mprotect() is
2682 available to modify the access protection of a memory mapped file.
2683 "d_msg"
2685 From d_msg.U:
2686 This variable conditionally defines the "HAS_MSG" symbol, which
2688 indicates that the entire msg*(2) library is present.
2689 "d_msg_ctrunc"
2691 From d_socket.U:
2692 This variable conditionally defines the "HAS_MSG_CTRUNC" symbol,
2694 which indicates that the "MSG_CTRUNC" is available. #ifdef is not
2695 enough because it may be an enum, glibc has been known to do this.
2696 "d_msg_dontroute"
2698 From d_socket.U:
2699 This variable conditionally defines the "HAS_MSG_DONTROUTE" symbol,
2701 which indicates that the "MSG_DONTROUTE" is available. #ifdef is
2702 not enough because it may be an enum, glibc has been known to do
2703 this.
2704 "d_msg_oob"
2706 From d_socket.U:
2707 This variable conditionally defines the "HAS_MSG_OOB" symbol, which
2709 indicates that the "MSG_OOB" is available. #ifdef is not enough
2710 because it may be an enum, glibc has been known to do this.
2711 "d_msg_peek"
2713 From d_socket.U:
2714 This variable conditionally defines the "HAS_MSG_PEEK" symbol,
2716 which indicates that the "MSG_PEEK" is available. #ifdef is not
2717 enough because it may be an enum, glibc has been known to do this.
2718 "d_msg_proxy"
2720 From d_socket.U:
2721 This variable conditionally defines the "HAS_MSG_PROXY" symbol,
2723 which indicates that the "MSG_PROXY" is available. #ifdef is not
2724 enough because it may be an enum, glibc has been known to do this.
2725 "d_msgctl"
2727 From d_msgctl.U:
2728 This variable conditionally defines the "HAS_MSGCTL" symbol, which
2730 indicates to the C program that the msgctl() routine is available.
2731 "d_msgget"
2733 From d_msgget.U:
2734 This variable conditionally defines the "HAS_MSGGET" symbol, which
2736 indicates to the C program that the msgget() routine is available.
2737 "d_msghdr_s"
2739 From d_msghdr_s.U:
2740 This variable conditionally defines the "HAS_STRUCT_MSGHDR" symbol,
2742 which indicates that the struct msghdr is supported.
2743 "d_msgrcv"
2745 From d_msgrcv.U:
2746 This variable conditionally defines the "HAS_MSGRCV" symbol, which
2748 indicates to the C program that the msgrcv() routine is available.
2749 "d_msgsnd"
2751 From d_msgsnd.U:
2752 This variable conditionally defines the "HAS_MSGSND" symbol, which
2754 indicates to the C program that the msgsnd() routine is available.
2755 "d_msync"
2757 From d_msync.U:
2758 This variable conditionally defines "HAS_MSYNC" if msync() is
2760 available to synchronize a mapped file.
2761 "d_munmap"
2763 From d_munmap.U:
2764 This variable conditionally defines "HAS_MUNMAP" if munmap() is
2766 available to unmap a region mapped by mmap().
2767 "d_mymalloc"
2769 From mallocsrc.U:
2770 This variable conditionally defines "MYMALLOC" in case other parts
2772 of the source want to take special action if "MYMALLOC" is used.
2773 This may include different sorts of profiling or error detection.
2774 "d_nan"
2776 From d_nan.U:
2777 This variable conditionally defines "HAS_NAN" if nan() is available
2779 to generate NaN.
2780 "d_nanosleep"
2782 From d_nanosleep.U:
2783 This variable conditionally defines "HAS_NANOSLEEP" if nanosleep()
2785 is available to sleep with 1E-9 sec accuracy.
2786 "d_ndbm"
2788 From i_ndbm.U:
2789 This variable conditionally defines the "HAS_NDBM" symbol, which
2791 indicates that both the ndbm.h include file and an appropriate ndbm
2792 library exist. Consult the different i_*ndbm variables to find out
2793 the actual include location. Sometimes, a system has the header
2794 file but not the library. This variable will only be set if the
2795 system has both.
2796 "d_ndbm_h_uses_prototypes"
2798 From i_ndbm.U:
2799 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
2801 symbol, which indicates that the ndbm.h include file uses real
2802 "ANSI" C prototypes instead of K&R style function declarations. K&R
2803 style declarations are unsupported in C++, so the include file
2804 requires special handling when using a C++ compiler and this
2805 variable is undefined. Consult the different
2806 d_*ndbm_h_uses_prototypes variables to get the same information for
2807 alternative ndbm.h include files.
2808 "d_nearbyint"
2810 From d_nearbyint.U:
2811 This variable conditionally defines "HAS_NEARBYINT" if nearbyint()
2813 is available to return the integral value closest to (according to
2814 the current rounding mode) to x.
2815 "d_newlocale"
2817 From d_newlocale.U:
2818 This variable conditionally defines the "HAS_NEWLOCALE" symbol,
2820 which indicates to the C program that the newlocale() routine is
2821 available to return a new locale object or modify an existing
2822 locale object.
2823 "d_nextafter"
2825 From d_nextafter.U:
2826 This variable conditionally defines "HAS_NEXTAFTER" if nextafter()
2828 is available to return the next machine representable double from x
2829 in direction y.
2830 "d_nexttoward"
2832 From d_nexttoward.U:
2833 This variable conditionally defines "HAS_NEXTTOWARD" if
2835 nexttoward() is available to return the next machine representable
2836 long double from x in direction y.
2837 "d_nice"
2839 From d_nice.U:
2840 This variable conditionally defines the "HAS_NICE" symbol, which
2842 indicates to the C program that the nice() routine is available.
2843 "d_nl_langinfo"
2845 From d_nl_langinfo.U:
2846 This variable conditionally defines the "HAS_NL_LANGINFO" symbol,
2848 which indicates to the C program that the nl_langinfo() routine is
2849 available.
2850 "d_nl_langinfo_l"
2852 From d_nl_langinfo_l.U:
2853 This variable contains the eventual value of the
2855 "HAS_NL_LANGINFO_L" symbol, which indicates if the nl_langinfo_l()
2856 function exists.
2857 "d_non_int_bitfields"
2859 From d_bitfield.U:
2860 This variable conditionally defines "HAS_NON_INT_BITFIELDS" which
2862 indicates that the C compiler accepts struct bitfields of sizes
2863 that aren't "int" or "unsigned int"
2864 "d_nv_preserves_uv"
2866 From perlxv.U:
2867 This variable indicates whether a variable of type nvtype can
2869 preserve all the bits a variable of type uvtype.
2870 "d_nv_zero_is_allbits_zero"
2872 From perlxv.U:
2873 This variable indicates whether a variable of type nvtype stores
2875 0.0 in memory as all bits zero.
2876 "d_off64_t"
2878 From d_off64_t.U:
2879 This symbol will be defined if the C compiler supports off64_t.
2881 "d_old_pthread_create_joinable"
2883 From d_pthrattrj.U:
2884 This variable conditionally defines pthread_create_joinable. undef
2886 if pthread.h defines "PTHREAD_CREATE_JOINABLE".
2887 "d_oldpthreads"
2889 From usethreads.U:
2890 This variable conditionally defines the "OLD_PTHREADS_API" symbol,
2892 and indicates that Perl should be built to use the old draft
2893 "POSIX" threads "API". This is only potentially meaningful if
2894 usethreads is set.
2895 "d_oldsock"
2897 From d_socket.U:
2898 This variable conditionally defines the "OLDSOCKET" symbol, which
2900 indicates that the "BSD" socket interface is based on 4.1c and not
2901 4.2.
2902 "d_open3"
2904 From d_open3.U:
2905 This variable conditionally defines the HAS_OPEN3 manifest
2907 constant, which indicates to the C program that the 3 argument
2908 version of the open(2) function is available.
2909 "d_openat"
2911 From d_fsat.U:
2912 This variable conditionally defines the "HAS_OPENAT" symbol, which
2914 indicates the "POSIX" openat() function is available.
2915 "d_pathconf"
2917 From d_pathconf.U:
2918 This variable conditionally defines the "HAS_PATHCONF" symbol,
2920 which indicates to the C program that the pathconf() routine is
2921 available to determine file-system related limits and options
2922 associated with a given filename.
2923 "d_pause"
2925 From d_pause.U:
2926 This variable conditionally defines the "HAS_PAUSE" symbol, which
2928 indicates to the C program that the pause() routine is available to
2929 suspend a process until a signal is received.
2930 "d_perl_otherlibdirs"
2932 From otherlibdirs.U:
2933 This variable conditionally defines "PERL_OTHERLIBDIRS", which
2935 contains a colon-separated set of paths for the perl binary to
2936 include in @"INC". See also otherlibdirs.
2937 "d_phostname"
2939 From d_gethname.U:
2940 This variable conditionally defines the "HAS_PHOSTNAME" symbol,
2942 which contains the shell command which, when fed to popen(), may be
2943 used to derive the host name.
2944 "d_pipe"
2946 From d_pipe.U:
2947 This variable conditionally defines the "HAS_PIPE" symbol, which
2949 indicates to the C program that the pipe() routine is available to
2950 create an inter-process channel.
2951 "d_pipe2"
2953 From d_pipe2.U:
2954 This variable conditionally defines the HAS_PIPE2 symbol, which
2956 indicates to the C program that the pipe2() routine is available to
2957 create an inter-process channel.
2958 "d_poll"
2960 From d_poll.U:
2961 This variable conditionally defines the "HAS_POLL" symbol, which
2963 indicates to the C program that the poll() routine is available to
2964 poll active file descriptors.
2965 "d_portable"
2967 From d_portable.U:
2968 This variable conditionally defines the "PORTABLE" symbol, which
2970 indicates to the C program that it should not assume that it is
2971 running on the machine it was compiled on.
2972 "d_prctl"
2974 From d_prctl.U:
2975 This variable conditionally defines the "HAS_PRCTL" symbol, which
2977 indicates to the C program that the prctl() routine is available.
2978 Note that there are at least two prctl variants: Linux and Irix.
2979 While they are somewhat similar, they are incompatible.
2980 "d_prctl_set_name"
2982 From d_prctl.U:
2983 This variable conditionally defines the "HAS_PRCTL_SET_NAME"
2985 symbol, which indicates to the C program that the prctl() routine
2986 supports the "PR_SET_NAME" option.
2987 "d_PRId64"
2989 From quadfio.U:
2990 This variable conditionally defines the PERL_PRId64 symbol, which
2992 indicates that stdio has a symbol to print 64-bit decimal numbers.
2993 "d_PRIeldbl"
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_PRIEUldbl"
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_PRIeldbl so that even case-
3006 blind systems can see the difference.
3007 "d_PRIfldbl"
3009 From longdblfio.U:
3010 This variable conditionally defines the PERL_PRIfldbl symbol, which
3012 indicates that stdio has a symbol to print long doubles.
3013 "d_PRIFUldbl"
3015 From longdblfio.U:
3016 This variable conditionally defines the PERL_PRIfldbl symbol, which
3018 indicates that stdio has a symbol to print long doubles. The "U"
3019 in the name is to separate this from d_PRIfldbl so that even case-
3020 blind systems can see the difference.
3021 "d_PRIgldbl"
3023 From longdblfio.U:
3024 This variable conditionally defines the PERL_PRIfldbl symbol, which
3026 indicates that stdio has a symbol to print long doubles.
3027 "d_PRIGUldbl"
3029 From longdblfio.U:
3030 This variable conditionally defines the PERL_PRIfldbl symbol, which
3032 indicates that stdio has a symbol to print long doubles. The "U"
3033 in the name is to separate this from d_PRIgldbl so that even case-
3034 blind systems can see the difference.
3035 "d_PRIi64"
3037 From quadfio.U:
3038 This variable conditionally defines the PERL_PRIi64 symbol, which
3040 indicates that stdio has a symbol to print 64-bit decimal numbers.
3041 "d_printf_format_null"
3043 From d_attribut.U:
3044 This variable conditionally defines "PRINTF_FORMAT_NULL_OK", which
3046 indicates the C compiler allows printf-like formats to be null.
3047 "d_PRIo64"
3049 From quadfio.U:
3050 This variable conditionally defines the PERL_PRIo64 symbol, which
3052 indicates that stdio has a symbol to print 64-bit octal numbers.
3053 "d_PRIu64"
3055 From quadfio.U:
3056 This variable conditionally defines the PERL_PRIu64 symbol, which
3058 indicates that stdio has a symbol to print 64-bit unsigned decimal
3059 numbers.
3060 "d_PRIx64"
3062 From quadfio.U:
3063 This variable conditionally defines the PERL_PRIx64 symbol, which
3065 indicates that stdio has a symbol to print 64-bit hexadecimal
3066 numbers.
3067 "d_PRIXU64"
3069 From quadfio.U:
3070 This variable conditionally defines the PERL_PRIXU64 symbol, which
3072 indicates that stdio has a symbol to print 64-bit hExADECimAl
3073 numbers. The "U" in the name is to separate this from d_PRIx64 so
3074 that even case-blind systems can see the difference.
3075 "d_procselfexe"
3077 From d_procselfexe.U:
3078 Defined if $procselfexe is symlink to the absolute pathname of the
3080 executing program.
3081 "d_pseudofork"
3083 From d_vfork.U:
3084 This variable conditionally defines the "HAS_PSEUDOFORK" symbol,
3086 which indicates that an emulation of the fork routine is available.
3087 "d_pthread_atfork"
3089 From d_pthread_atfork.U:
3090 This variable conditionally defines the "HAS_PTHREAD_ATFORK"
3092 symbol, which indicates to the C program that the pthread_atfork()
3093 routine is available.
3094 "d_pthread_attr_setscope"
3096 From d_pthread_attr_ss.U:
3097 This variable conditionally defines "HAS_PTHREAD_ATTR_SETSCOPE" if
3099 pthread_attr_setscope() is available to set the contention scope
3100 attribute of a thread attribute object.
3101 "d_pthread_yield"
3103 From d_pthread_y.U:
3104 This variable conditionally defines the "HAS_PTHREAD_YIELD" symbol
3106 if the pthread_yield routine is available to yield the execution of
3107 the current thread.
3108 "d_ptrdiff_t"
3110 From d_ptrdiff_t.U:
3111 This symbol will be defined if the C compiler supports ptrdiff_t.
3113 "d_pwage"
3115 From i_pwd.U:
3116 This variable conditionally defines "PWAGE", which indicates that
3118 struct passwd contains pw_age.
3119 "d_pwchange"
3121 From i_pwd.U:
3122 This variable conditionally defines "PWCHANGE", which indicates
3124 that struct passwd contains pw_change.
3125 "d_pwclass"
3127 From i_pwd.U:
3128 This variable conditionally defines "PWCLASS", which indicates that
3130 struct passwd contains pw_class.
3131 "d_pwcomment"
3133 From i_pwd.U:
3134 This variable conditionally defines "PWCOMMENT", which indicates
3136 that struct passwd contains pw_comment.
3137 "d_pwexpire"
3139 From i_pwd.U:
3140 This variable conditionally defines "PWEXPIRE", which indicates
3142 that struct passwd contains pw_expire.
3143 "d_pwgecos"
3145 From i_pwd.U:
3146 This variable conditionally defines "PWGECOS", which indicates that
3148 struct passwd contains pw_gecos.
3149 "d_pwpasswd"
3151 From i_pwd.U:
3152 This variable conditionally defines "PWPASSWD", which indicates
3154 that struct passwd contains pw_passwd.
3155 "d_pwquota"
3157 From i_pwd.U:
3158 This variable conditionally defines "PWQUOTA", which indicates that
3160 struct passwd contains pw_quota.
3161 "d_qgcvt"
3163 From d_qgcvt.U:
3164 This variable conditionally defines the "HAS_QGCVT" symbol, which
3166 indicates to the C program that the qgcvt() routine is available.
3167 "d_quad"
3169 From quadtype.U:
3170 This variable, if defined, tells that there's a 64-bit integer
3172 type, quadtype.
3173 "d_querylocale"
3175 From d_newlocale.U:
3176 This variable conditionally defines the "HAS_QUERYLOCALE" symbol,
3178 which indicates to the C program that the querylocale() routine is
3179 available to return the name of the locale for a category mask.
3180 "d_random_r"
3182 From d_random_r.U:
3183 This variable conditionally defines the "HAS_RANDOM_R" symbol,
3185 which indicates to the C program that the random_r() routine is
3186 available.
3187 "d_re_comp"
3189 From d_regcmp.U:
3190 This variable conditionally defines the "HAS_RECOMP" symbol, which
3192 indicates to the C program that the re_comp() routine is available
3193 for regular pattern matching (usually on "BSD"). If so, it is
3194 likely that re_exec() exists.
3195 "d_readdir"
3197 From d_readdir.U:
3198 This variable conditionally defines "HAS_READDIR" if readdir() is
3200 available to read directory entries.
3201 "d_readdir64_r"
3203 From d_readdir64_r.U:
3204 This variable conditionally defines the HAS_READDIR64_R symbol,
3206 which indicates to the C program that the readdir64_r() routine is
3207 available.
3208 "d_readdir_r"
3210 From d_readdir_r.U:
3211 This variable conditionally defines the "HAS_READDIR_R" symbol,
3213 which indicates to the C program that the readdir_r() routine is
3214 available.
3215 "d_readlink"
3217 From d_readlink.U:
3218 This variable conditionally defines the "HAS_READLINK" symbol,
3220 which indicates to the C program that the readlink() routine is
3221 available to read the value of a symbolic link.
3222 "d_readv"
3224 From d_readv.U:
3225 This variable conditionally defines the "HAS_READV" symbol, which
3227 indicates to the C program that the readv() routine is available.
3228 "d_recvmsg"
3230 From d_recvmsg.U:
3231 This variable conditionally defines the "HAS_RECVMSG" symbol, which
3233 indicates to the C program that the recvmsg() routine is available.
3234 "d_regcmp"
3236 From d_regcmp.U:
3237 This variable conditionally defines the "HAS_REGCMP" symbol, which
3239 indicates to the C program that the regcmp() routine is available
3240 for regular pattern matching (usually on System V).
3241 "d_regcomp"
3243 From d_regcmp.U:
3244 This variable conditionally defines the "HAS_REGCOMP" symbol, which
3246 indicates to the C program that the regcomp() routine is available
3247 for regular pattern matching (usually on POSIX.2 conforming
3248 systems).
3249 "d_remainder"
3251 From d_remainder.U:
3252 This variable conditionally defines the "HAS_REMAINDER" symbol,
3254 which indicates to the C program that the remainder() routine is
3255 available.
3256 "d_remquo"
3258 From d_remquo.U:
3259 This variable conditionally defines the "HAS_REMQUO" symbol, which
3261 indicates to the C program that the remquo() routine is available.
3262 "d_rename"
3264 From d_rename.U:
3265 This variable conditionally defines the "HAS_RENAME" symbol, which
3267 indicates to the C program that the rename() routine is available
3268 to rename files.
3269 "d_renameat"
3271 From d_fsat.U:
3272 This variable conditionally defines the "HAS_RENAMEAT" symbol,
3274 which indicates the "POSIX" renameat() function is available.
3275 "d_rewinddir"
3277 From d_readdir.U:
3278 This variable conditionally defines "HAS_REWINDDIR" if rewinddir()
3280 is available.
3281 "d_rint"
3283 From d_rint.U:
3284 This variable conditionally defines the "HAS_RINT" symbol, which
3286 indicates to the C program that the rint() routine is available.
3287 "d_rmdir"
3289 From d_rmdir.U:
3290 This variable conditionally defines "HAS_RMDIR" if rmdir() is
3292 available to remove directories.
3293 "d_round"
3295 From d_round.U:
3296 This variable conditionally defines the "HAS_ROUND" symbol, which
3298 indicates to the C program that the round() routine is available.
3299 "d_sbrkproto"
3301 From d_sbrkproto.U:
3302 This variable conditionally defines the "HAS_SBRK_PROTO" symbol,
3304 which indicates to the C program that the system provides a
3305 prototype for the sbrk() function. Otherwise, it is up to the
3306 program to supply one.
3307 "d_scalbn"
3309 From d_scalbn.U:
3310 This variable conditionally defines the "HAS_SCALBN" symbol, which
3312 indicates to the C program that the scalbn() routine is available.
3313 "d_scalbnl"
3315 From d_scalbnl.U:
3316 This variable conditionally defines the "HAS_SCALBNL" symbol, which
3318 indicates to the C program that the scalbnl() routine is available.
3319 If ilogbl is also present we can emulate frexpl.
3320 "d_sched_yield"
3322 From d_pthread_y.U:
3323 This variable conditionally defines the "HAS_SCHED_YIELD" symbol if
3325 the sched_yield routine is available to yield the execution of the
3326 current thread.
3327 "d_scm_rights"
3329 From d_socket.U:
3330 This variable conditionally defines the "HAS_SCM_RIGHTS" symbol,
3332 which indicates that the "SCM_RIGHTS" is available. #ifdef is not
3333 enough because it may be an enum, glibc has been known to do this.
3334 "d_SCNfldbl"
3336 From longdblfio.U:
3337 This variable conditionally defines the PERL_PRIfldbl symbol, which
3339 indicates that stdio has a symbol to scan long doubles.
3340 "d_seekdir"
3342 From d_readdir.U:
3343 This variable conditionally defines "HAS_SEEKDIR" if seekdir() is
3345 available.
3346 "d_select"
3348 From d_select.U:
3349 This variable conditionally defines "HAS_SELECT" if select() is
3351 available to select active file descriptors. A <sys/time.h>
3352 inclusion may be necessary for the timeout field.
3353 "d_sem"
3355 From d_sem.U:
3356 This variable conditionally defines the "HAS_SEM" symbol, which
3358 indicates that the entire sem*(2) library is present.
3359 "d_semctl"
3361 From d_semctl.U:
3362 This variable conditionally defines the "HAS_SEMCTL" symbol, which
3364 indicates to the C program that the semctl() routine is available.
3365 "d_semctl_semid_ds"
3367 From d_union_semun.U:
3368 This variable conditionally defines "USE_SEMCTL_SEMID_DS", which
3370 indicates that struct semid_ds * is to be used for semctl
3371 "IPC_STAT".
3372 "d_semctl_semun"
3374 From d_union_semun.U:
3375 This variable conditionally defines "USE_SEMCTL_SEMUN", which
3377 indicates that union semun is to be used for semctl "IPC_STAT".
3378 "d_semget"
3380 From d_semget.U:
3381 This variable conditionally defines the "HAS_SEMGET" symbol, which
3383 indicates to the C program that the semget() routine is available.
3384 "d_semop"
3386 From d_semop.U:
3387 This variable conditionally defines the "HAS_SEMOP" symbol, which
3389 indicates to the C program that the semop() routine is available.
3390 "d_sendmsg"
3392 From d_sendmsg.U:
3393 This variable conditionally defines the "HAS_SENDMSG" symbol, which
3395 indicates to the C program that the sendmsg() routine is available.
3396 "d_setegid"
3398 From d_setegid.U:
3399 This variable conditionally defines the "HAS_SETEGID" symbol, which
3401 indicates to the C program that the setegid() routine is available
3402 to change the effective gid of the current program.
3403 "d_seteuid"
3405 From d_seteuid.U:
3406 This variable conditionally defines the "HAS_SETEUID" symbol, which
3408 indicates to the C program that the seteuid() routine is available
3409 to change the effective uid of the current program.
3410 "d_setgrent"
3412 From d_setgrent.U:
3413 This variable conditionally defines the "HAS_SETGRENT" symbol,
3415 which indicates to the C program that the setgrent() routine is
3416 available for initializing sequential access to the group database.
3417 "d_setgrent_r"
3419 From d_setgrent_r.U:
3420 This variable conditionally defines the "HAS_SETGRENT_R" symbol,
3422 which indicates to the C program that the setgrent_r() routine is
3423 available.
3424 "d_setgrps"
3426 From d_setgrps.U:
3427 This variable conditionally defines the "HAS_SETGROUPS" symbol,
3429 which indicates to the C program that the setgroups() routine is
3430 available to set the list of process groups.
3431 "d_sethent"
3433 From d_sethent.U:
3434 This variable conditionally defines "HAS_SETHOSTENT" if
3436 sethostent() is available.
3437 "d_sethostent_r"
3439 From d_sethostent_r.U:
3440 This variable conditionally defines the "HAS_SETHOSTENT_R" symbol,
3442 which indicates to the C program that the sethostent_r() routine is
3443 available.
3444 "d_setitimer"
3446 From d_setitimer.U:
3447 This variable conditionally defines the "HAS_SETITIMER" symbol,
3449 which indicates to the C program that the setitimer() routine is
3450 available.
3451 "d_setlinebuf"
3453 From d_setlnbuf.U:
3454 This variable conditionally defines the "HAS_SETLINEBUF" symbol,
3456 which indicates to the C program that the setlinebuf() routine is
3457 available to change stderr or stdout from block-buffered or
3458 unbuffered to a line-buffered mode.
3459 "d_setlocale"
3461 From d_setlocale.U:
3462 This variable conditionally defines "HAS_SETLOCALE" if setlocale()
3464 is available to handle locale-specific ctype implementations.
3465 "d_setlocale_accepts_any_locale_name"
3467 From d_setlocale.U:
3468 This variable conditionally defines
3470 "SETLOCALE_ACCEPTS_ANY_LOCALE_NAME" if setlocale() accepts any
3471 locale name.
3472 "d_setlocale_r"
3474 From d_setlocale_r.U:
3475 This variable conditionally defines the "HAS_SETLOCALE_R" symbol,
3477 which indicates to the C program that the setlocale_r() routine is
3478 available.
3479 "d_setnent"
3481 From d_setnent.U:
3482 This variable conditionally defines "HAS_SETNETENT" if setnetent()
3484 is available.
3485 "d_setnetent_r"
3487 From d_setnetent_r.U:
3488 This variable conditionally defines the "HAS_SETNETENT_R" symbol,
3490 which indicates to the C program that the setnetent_r() routine is
3491 available.
3492 "d_setpent"
3494 From d_setpent.U:
3495 This variable conditionally defines "HAS_SETPROTOENT" if
3497 setprotoent() is available.
3498 "d_setpgid"
3500 From d_setpgid.U:
3501 This variable conditionally defines the "HAS_SETPGID" symbol if the
3503 setpgid(pid, gpid) function is available to set process group "ID".
3504 "d_setpgrp"
3506 From d_setpgrp.U:
3507 This variable conditionally defines "HAS_SETPGRP" if setpgrp() is
3509 available to set the current process group.
3510 "d_setpgrp2"
3512 From d_setpgrp2.U:
3513 This variable conditionally defines the HAS_SETPGRP2 symbol, which
3515 indicates to the C program that the setpgrp2() (as in DG/"UX")
3516 routine is available to set the current process group.
3517 "d_setprior"
3519 From d_setprior.U:
3520 This variable conditionally defines "HAS_SETPRIORITY" if
3522 setpriority() is available to set a process's priority.
3523 "d_setproctitle"
3525 From d_setproctitle.U:
3526 This variable conditionally defines the "HAS_SETPROCTITLE" symbol,
3528 which indicates to the C program that the setproctitle() routine is
3529 available.
3530 "d_setprotoent_r"
3532 From d_setprotoent_r.U:
3533 This variable conditionally defines the "HAS_SETPROTOENT_R" symbol,
3535 which indicates to the C program that the setprotoent_r() routine
3536 is available.
3537 "d_setpwent"
3539 From d_setpwent.U:
3540 This variable conditionally defines the "HAS_SETPWENT" symbol,
3542 which indicates to the C program that the setpwent() routine is
3543 available for initializing sequential access to the passwd
3544 database.
3545 "d_setpwent_r"
3547 From d_setpwent_r.U:
3548 This variable conditionally defines the "HAS_SETPWENT_R" symbol,
3550 which indicates to the C program that the setpwent_r() routine is
3551 available.
3552 "d_setregid"
3554 From d_setregid.U:
3555 This variable conditionally defines "HAS_SETREGID" if setregid() is
3557 available to change the real and effective gid of the current
3558 process.
3559 "d_setresgid"
3561 From d_setregid.U:
3562 This variable conditionally defines "HAS_SETRESGID" if setresgid()
3564 is available to change the real, effective and saved gid of the
3565 current process.
3566 "d_setresuid"
3568 From d_setreuid.U:
3569 This variable conditionally defines "HAS_SETREUID" if setresuid()
3571 is available to change the real, effective and saved uid of the
3572 current process.
3573 "d_setreuid"
3575 From d_setreuid.U:
3576 This variable conditionally defines "HAS_SETREUID" if setreuid() is
3578 available to change the real and effective uid of the current
3579 process.
3580 "d_setrgid"
3582 From d_setrgid.U:
3583 This variable conditionally defines the "HAS_SETRGID" symbol, which
3585 indicates to the C program that the setrgid() routine is available
3586 to change the real gid of the current program.
3587 "d_setruid"
3589 From d_setruid.U:
3590 This variable conditionally defines the "HAS_SETRUID" symbol, which
3592 indicates to the C program that the setruid() routine is available
3593 to change the real uid of the current program.
3594 "d_setsent"
3596 From d_setsent.U:
3597 This variable conditionally defines "HAS_SETSERVENT" if
3599 setservent() is available.
3600 "d_setservent_r"
3602 From d_setservent_r.U:
3603 This variable conditionally defines the "HAS_SETSERVENT_R" symbol,
3605 which indicates to the C program that the setservent_r() routine is
3606 available.
3607 "d_setsid"
3609 From d_setsid.U:
3610 This variable conditionally defines "HAS_SETSID" if setsid() is
3612 available to set the process group "ID".
3613 "d_setvbuf"
3615 From d_setvbuf.U:
3616 This variable conditionally defines the "HAS_SETVBUF" symbol, which
3618 indicates to the C program that the setvbuf() routine is available
3619 to change buffering on an open stdio stream.
3620 "d_shm"
3622 From d_shm.U:
3623 This variable conditionally defines the "HAS_SHM" symbol, which
3625 indicates that the entire shm*(2) library is present.
3626 "d_shmat"
3628 From d_shmat.U:
3629 This variable conditionally defines the "HAS_SHMAT" symbol, which
3631 indicates to the C program that the shmat() routine is available.
3632 "d_shmatprototype"
3634 From d_shmat.U:
3635 This variable conditionally defines the "HAS_SHMAT_PROTOTYPE"
3637 symbol, which indicates that sys/shm.h has a prototype for shmat.
3638 "d_shmctl"
3640 From d_shmctl.U:
3641 This variable conditionally defines the "HAS_SHMCTL" symbol, which
3643 indicates to the C program that the shmctl() routine is available.
3644 "d_shmdt"
3646 From d_shmdt.U:
3647 This variable conditionally defines the "HAS_SHMDT" symbol, which
3649 indicates to the C program that the shmdt() routine is available.
3650 "d_shmget"
3652 From d_shmget.U:
3653 This variable conditionally defines the "HAS_SHMGET" symbol, which
3655 indicates to the C program that the shmget() routine is available.
3656 "d_sigaction"
3658 From d_sigaction.U:
3659 This variable conditionally defines the "HAS_SIGACTION" symbol,
3661 which indicates that the Vr4 sigaction() routine is available.
3662 "d_siginfo_si_addr"
3664 From d_siginfo_si.U:
3665 This variable conditionally defines the "HAS_SIGINFO_SI_ADDR"
3667 symbol, which indicates that the siginfo_t struct has the si_addr
3668 member.
3669 "d_siginfo_si_band"
3671 From d_siginfo_si.U:
3672 This variable conditionally defines the "HAS_SIGINFO_SI_BAND"
3674 symbol, which indicates that the siginfo_t struct has the si_band
3675 member.
3676 "d_siginfo_si_errno"
3678 From d_siginfo_si.U:
3679 This variable conditionally defines the "HAS_SIGINFO_SI_ERRNO"
3681 symbol, which indicates that the siginfo_t struct has the si_errno
3682 member.
3683 "d_siginfo_si_fd"
3685 From d_siginfo_si.U:
3686 This variable conditionally defines the "HAS_SIGINFO_SI_FD" symbol,
3688 which indicates that the siginfo_t struct has the si_fd member.
3689 "d_siginfo_si_pid"
3691 From d_siginfo_si.U:
3692 This variable conditionally defines the "HAS_SIGINFO_SI_PID"
3694 symbol, which indicates that the siginfo_t struct has the si_pid
3695 member.
3696 "d_siginfo_si_status"
3698 From d_siginfo_si.U:
3699 This variable conditionally defines the "HAS_SIGINFO_SI_STATUS"
3701 symbol, which indicates that the siginfo_t struct has the si_status
3702 member.
3703 "d_siginfo_si_uid"
3705 From d_siginfo_si.U:
3706 This variable conditionally defines the "HAS_SIGINFO_SI_UID"
3708 symbol, which indicates that the siginfo_t struct has the si_uid
3709 member.
3710 "d_siginfo_si_value"
3712 From d_siginfo_si.U:
3713 This variable conditionally defines the "HAS_SIGINFO_SI_VALUE"
3715 symbol, which indicates that the siginfo_t struct has the si_value
3716 member.
3717 "d_signbit"
3719 From d_signbit.U:
3720 This variable conditionally defines the "HAS_SIGNBIT" symbol, which
3722 indicates to the C program that the signbit() routine is available
3723 and safe to use with perl's intern "NV" type.
3724 "d_sigprocmask"
3726 From d_sigprocmask.U:
3727 This variable conditionally defines "HAS_SIGPROCMASK" if
3729 sigprocmask() is available to examine or change the signal mask of
3730 the calling process.
3731 "d_sigsetjmp"
3733 From d_sigsetjmp.U:
3734 This variable conditionally defines the "HAS_SIGSETJMP" symbol,
3736 which indicates that the sigsetjmp() routine is available to call
3737 setjmp() and optionally save the process's signal mask.
3738 "d_sin6_scope_id"
3740 From d_socket.U:
3741 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol,
3743 which indicates that a struct sockaddr_in6 structure has the
3744 sin6_scope_id member.
3745 "d_sitearch"
3747 From sitearch.U:
3748 This variable conditionally defines "SITEARCH" to hold the pathname
3750 of architecture-dependent library files for $package. If $sitearch
3751 is the same as $archlib, then this is set to undef.
3752 "d_snprintf"
3754 From d_snprintf.U:
3755 This variable conditionally defines the "HAS_SNPRINTF" symbol,
3757 which indicates to the C program that the snprintf () library
3758 function is available.
3759 "d_sockaddr_in6"
3761 From d_socket.U:
3762 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol,
3764 which indicates the availability of a struct sockaddr_in6.
3765 "d_sockaddr_sa_len"
3767 From d_socket.U:
3768 This variable conditionally defines the "HAS_SOCKADDR_SA_LEN"
3770 symbol, which indicates that a struct sockaddr structure has the
3771 sa_len member.
3772 "d_sockaddr_storage"
3774 From d_socket.U:
3775 This variable conditionally defines the "HAS_SOCKADDR_STORAGE"
3777 symbol, which indicates the availability of a struct
3778 sockaddr_storage.
3779 "d_sockatmark"
3781 From d_sockatmark.U:
3782 This variable conditionally defines the "HAS_SOCKATMARK" symbol,
3784 which indicates to the C program that the sockatmark() routine is
3785 available.
3786 "d_sockatmarkproto"
3788 From d_sockatmarkproto.U:
3789 This variable conditionally defines the "HAS_SOCKATMARK_PROTO"
3791 symbol, which indicates to the C program that the system provides a
3792 prototype for the sockatmark() function. Otherwise, it is up to
3793 the program to supply one.
3794 "d_socket"
3796 From d_socket.U:
3797 This variable conditionally defines "HAS_SOCKET", which indicates
3799 that the "BSD" socket interface is supported.
3800 "d_socklen_t"
3802 From d_socklen_t.U:
3803 This symbol will be defined if the C compiler supports socklen_t.
3805 "d_sockpair"
3807 From d_socket.U:
3808 This variable conditionally defines the "HAS_SOCKETPAIR" symbol,
3810 which indicates that the "BSD" socketpair() is supported.
3811 "d_socks5_init"
3813 From d_socks5_init.U:
3814 This variable conditionally defines the HAS_SOCKS5_INIT symbol,
3816 which indicates to the C program that the socks5_init() routine is
3817 available.
3818 "d_sqrtl"
3820 From d_sqrtl.U:
3821 This variable conditionally defines the "HAS_SQRTL" symbol, which
3823 indicates to the C program that the sqrtl() routine is available.
3824 "d_srand48_r"
3826 From d_srand48_r.U:
3827 This variable conditionally defines the HAS_SRAND48_R symbol, which
3829 indicates to the C program that the srand48_r() routine is
3830 available.
3831 "d_srandom_r"
3833 From d_srandom_r.U:
3834 This variable conditionally defines the "HAS_SRANDOM_R" symbol,
3836 which indicates to the C program that the srandom_r() routine is
3837 available.
3838 "d_sresgproto"
3840 From d_sresgproto.U:
3841 This variable conditionally defines the "HAS_SETRESGID_PROTO"
3843 symbol, which indicates to the C program that the system provides a
3844 prototype for the setresgid() function. Otherwise, it is up to the
3845 program to supply one.
3846 "d_sresuproto"
3848 From d_sresuproto.U:
3849 This variable conditionally defines the "HAS_SETRESUID_PROTO"
3851 symbol, which indicates to the C program that the system provides a
3852 prototype for the setresuid() function. Otherwise, it is up to the
3853 program to supply one.
3854 "d_stat"
3856 From d_stat.U:
3857 This variable conditionally defines "HAS_STAT" if stat() is
3859 available to get file status.
3860 "d_statblks"
3862 From d_statblks.U:
3863 This variable conditionally defines "USE_STAT_BLOCKS" if this
3865 system has a stat structure declaring st_blksize and st_blocks.
3866 "d_statfs_f_flags"
3868 From d_statfs_f_flags.U:
3869 This variable conditionally defines the "HAS_STRUCT_STATFS_F_FLAGS"
3871 symbol, which indicates to struct statfs from has f_flags member.
3872 This kind of struct statfs is coming from sys/mount.h ("BSD"), not
3873 from sys/statfs.h ("SYSV").
3874 "d_statfs_s"
3876 From d_statfs_s.U:
3877 This variable conditionally defines the "HAS_STRUCT_STATFS" symbol,
3879 which indicates that the struct statfs is supported.
3880 "d_static_inline"
3882 From d_static_inline.U:
3883 This variable conditionally defines the "HAS_STATIC_INLINE" symbol,
3885 which indicates that the C compiler supports C99-style static
3886 inline. That is, the function can't be called from another
3887 translation unit.
3888 "d_statvfs"
3890 From d_statvfs.U:
3891 This variable conditionally defines the "HAS_STATVFS" symbol, which
3893 indicates to the C program that the statvfs() routine is available.
3894 "d_stdio_cnt_lval"
3896 From d_stdstdio.U:
3897 This variable conditionally defines "STDIO_CNT_LVALUE" if the
3899 "FILE_cnt" macro can be used as an lvalue.
3900 "d_stdio_ptr_lval"
3902 From d_stdstdio.U:
3903 This variable conditionally defines "STDIO_PTR_LVALUE" if the
3905 "FILE_ptr" macro can be used as an lvalue.
3906 "d_stdio_ptr_lval_nochange_cnt"
3908 From d_stdstdio.U:
3909 This symbol is defined if using the "FILE_ptr" macro as an lvalue
3911 to increase the pointer by n leaves File_cnt(fp) unchanged.
3912 "d_stdio_ptr_lval_sets_cnt"
3914 From d_stdstdio.U:
3915 This symbol is defined if using the "FILE_ptr" macro as an lvalue
3917 to increase the pointer by n has the side effect of decreasing the
3918 value of File_cnt(fp) by n.
3919 "d_stdio_stream_array"
3921 From stdio_streams.U:
3922 This variable tells whether there is an array holding the stdio
3924 streams.
3925 "d_stdiobase"
3927 From d_stdstdio.U:
3928 This variable conditionally defines "USE_STDIO_BASE" if this system
3930 has a "FILE" structure declaring a usable _base field (or
3931 equivalent) in stdio.h.
3932 "d_stdstdio"
3934 From d_stdstdio.U:
3935 This variable conditionally defines "USE_STDIO_PTR" if this system
3937 has a "FILE" structure declaring usable _ptr and _cnt fields (or
3938 equivalent) in stdio.h.
3939 "d_strcoll"
3941 From d_strcoll.U:
3942 This variable conditionally defines "HAS_STRCOLL" if strcoll() is
3944 available to compare strings using collating information.
3945 "d_strerror_l"
3947 From d_strerror_l.U:
3948 This variable conditionally defines the "HAS_STRERROR_L" symbol,
3950 which indicates to the C program that the strerror_l() routine is
3951 available to return the error message for a given errno value in a
3952 particular locale (identified by a locale_t object).
3953 "d_strerror_r"
3955 From d_strerror_r.U:
3956 This variable conditionally defines the "HAS_STRERROR_R" symbol,
3958 which indicates to the C program that the strerror_r() routine is
3959 available.
3960 "d_strftime"
3962 From d_strftime.U:
3963 This variable conditionally defines the "HAS_STRFTIME" symbol,
3965 which indicates to the C program that the strftime() routine is
3966 available.
3967 "d_strlcat"
3969 From d_strlcat.U:
3970 This variable conditionally defines the "HAS_STRLCAT" symbol, which
3972 indicates to the C program that the strlcat () routine is
3973 available.
3974 "d_strlcpy"
3976 From d_strlcpy.U:
3977 This variable conditionally defines the "HAS_STRLCPY" symbol, which
3979 indicates to the C program that the strlcpy () routine is
3980 available.
3981 "d_strnlen"
3983 From d_strnlen.U:
3984 This variable conditionally defines the "HAS_STRNLEN" symbol, which
3986 indicates to the C program that the strnlen () routine is
3987 available.
3988 "d_strtod"
3990 From d_strtod.U:
3991 This variable conditionally defines the "HAS_STRTOD" symbol, which
3993 indicates to the C program that the strtod() routine is available
3994 to provide better numeric string conversion than atof().
3995 "d_strtod_l"
3997 From d_strtod_l.U:
3998 This variable conditionally defines the "HAS_STRTOD_L" symbol,
4000 which indicates to the C program that the strtod_l() routine is
4001 available.
4002 "d_strtol"
4004 From d_strtol.U:
4005 This variable conditionally defines the "HAS_STRTOL" symbol, which
4007 indicates to the C program that the strtol() routine is available
4008 to provide better numeric string conversion than atoi() and
4009 friends.
4010 "d_strtold"
4012 From d_strtold.U:
4013 This variable conditionally defines the "HAS_STRTOLD" symbol, which
4015 indicates to the C program that the strtold() routine is available.
4016 "d_strtold_l"
4018 From d_strtold_l.U:
4019 This variable conditionally defines the "HAS_STRTOLD_L" symbol,
4021 which indicates to the C program that the strtold_l() routine is
4022 available.
4023 "d_strtoll"
4025 From d_strtoll.U:
4026 This variable conditionally defines the "HAS_STRTOLL" symbol, which
4028 indicates to the C program that the strtoll() routine is available.
4029 "d_strtoq"
4031 From d_strtoq.U:
4032 This variable conditionally defines the "HAS_STRTOQ" symbol, which
4034 indicates to the C program that the strtoq() routine is available.
4035 "d_strtoul"
4037 From d_strtoul.U:
4038 This variable conditionally defines the "HAS_STRTOUL" symbol, which
4040 indicates to the C program that the strtoul() routine is available
4041 to provide conversion of strings to unsigned long.
4042 "d_strtoull"
4044 From d_strtoull.U:
4045 This variable conditionally defines the "HAS_STRTOULL" symbol,
4047 which indicates to the C program that the strtoull() routine is
4048 available.
4049 "d_strtouq"
4051 From d_strtouq.U:
4052 This variable conditionally defines the "HAS_STRTOUQ" symbol, which
4054 indicates to the C program that the strtouq() routine is available.
4055 "d_strxfrm"
4057 From d_strxfrm.U:
4058 This variable conditionally defines "HAS_STRXFRM" if strxfrm() is
4060 available to transform strings.
4061 "d_strxfrm_l"
4063 From d_strxfrm_l.U:
4064 This variable conditionally defines "HAS_STRXFRM_L" if strxfrm_l()
4066 is available to transform strings.
4067 "d_suidsafe"
4069 From d_dosuid.U:
4070 This variable conditionally defines "SETUID_SCRIPTS_ARE_SECURE_NOW"
4072 if setuid scripts can be secure. This test looks in /dev/fd/.
4073 "d_symlink"
4075 From d_symlink.U:
4076 This variable conditionally defines the "HAS_SYMLINK" symbol, which
4078 indicates to the C program that the symlink() routine is available
4079 to create symbolic links.
4080 "d_syscall"
4082 From d_syscall.U:
4083 This variable conditionally defines "HAS_SYSCALL" if syscall() is
4085 available call arbitrary system calls.
4086 "d_syscallproto"
4088 From d_syscallproto.U:
4089 This variable conditionally defines the "HAS_SYSCALL_PROTO" symbol,
4091 which indicates to the C program that the system provides a
4092 prototype for the syscall() function. Otherwise, it is up to the
4093 program to supply one.
4094 "d_sysconf"
4096 From d_sysconf.U:
4097 This variable conditionally defines the "HAS_SYSCONF" symbol, which
4099 indicates to the C program that the sysconf() routine is available
4100 to determine system related limits and options.
4101 "d_sysernlst"
4103 From d_strerror.U:
4104 This variable conditionally defines "HAS_SYS_ERRNOLIST" if
4106 sys_errnolist[] is available to translate error numbers to the
4107 symbolic name.
4108 "d_syserrlst"
4110 From d_strerror.U:
4111 This variable conditionally defines "HAS_SYS_ERRLIST" if
4113 sys_errlist[] is available to translate error numbers to strings.
4114 "d_system"
4116 From d_system.U:
4117 This variable conditionally defines "HAS_SYSTEM" if system() is
4119 available to issue a shell command.
4120 "d_tcgetpgrp"
4122 From d_tcgtpgrp.U:
4123 This variable conditionally defines the "HAS_TCGETPGRP" symbol,
4125 which indicates to the C program that the tcgetpgrp() routine is
4126 available. to get foreground process group "ID".
4127 "d_tcsetpgrp"
4129 From d_tcstpgrp.U:
4130 This variable conditionally defines the "HAS_TCSETPGRP" symbol,
4132 which indicates to the C program that the tcsetpgrp() routine is
4133 available to set foreground process group "ID".
4134 "d_telldir"
4136 From d_readdir.U:
4137 This variable conditionally defines "HAS_TELLDIR" if telldir() is
4139 available.
4140 "d_telldirproto"
4142 From d_telldirproto.U:
4143 This variable conditionally defines the "HAS_TELLDIR_PROTO" symbol,
4145 which indicates to the C program that the system provides a
4146 prototype for the telldir() function. Otherwise, it is up to the
4147 program to supply one.
4148 "d_tgamma"
4150 From d_tgamma.U:
4151 This variable conditionally defines the "HAS_TGAMMA" symbol, which
4153 indicates to the C program that the tgamma() routine is available
4154 for the gamma function. See also d_lgamma.
4155 "d_thread_local"
4157 From d_thread_local.U:
4158 This variable conditionally defines the "PERL_THREAD_LOCAL" symbol.
4160 In turn that gives a linkage specification for thread-local
4161 storage.
4162 "d_thread_safe_nl_langinfo_l"
4164 From d_nl_langinfo_l.U:
4165 This variable contains the eventual value of the
4167 "HAS_THREAD_SAFE_NL_LANGINFO_L" symbol, which indicates if the
4168 nl_langinfo_l() function exists and is thread-safe.
4169 "d_time"
4171 From d_time.U:
4172 This variable conditionally defines the "HAS_TIME" symbol, which
4174 indicates that the time() routine exists. The time() routine is
4175 normally provided on "UNIX" systems.
4176 "d_timegm"
4178 From d_timegm.U:
4179 This variable conditionally defines the "HAS_TIMEGM" symbol, which
4181 indicates to the C program that the timegm () routine is available.
4182 "d_times"
4184 From d_times.U:
4185 This variable conditionally defines the "HAS_TIMES" symbol, which
4187 indicates that the times() routine exists. The times() routine is
4188 normally provided on "UNIX" systems. You may have to include
4189 <sys/times.h>.
4190 "d_tm_tm_gmtoff"
4192 From i_time.U:
4193 This variable conditionally defines "HAS_TM_TM_GMTOFF", which
4195 indicates to the C program that the struct tm has the tm_gmtoff
4196 field.
4197 "d_tm_tm_zone"
4199 From i_time.U:
4200 This variable conditionally defines "HAS_TM_TM_ZONE", which
4202 indicates to the C program that the struct tm has the tm_zone
4203 field.
4204 "d_tmpnam_r"
4206 From d_tmpnam_r.U:
4207 This variable conditionally defines the "HAS_TMPNAM_R" symbol,
4209 which indicates to the C program that the tmpnam_r() routine is
4210 available.
4211 "d_towlower"
4213 From d_towlower.U:
4214 This variable conditionally defines the "HAS_TOWLOWER" symbol,
4216 which indicates to the C program that the towlower() routine is
4217 available.
4218 "d_towupper"
4220 From d_towupper.U:
4221 This variable conditionally defines the "HAS_TOWUPPER" symbol,
4223 which indicates to the C program that the towupper() routine is
4224 available.
4225 "d_trunc"
4227 From d_trunc.U:
4228 This variable conditionally defines the "HAS_TRUNC" symbol, which
4230 indicates to the C program that the trunc() routine is available to
4231 round doubles towards zero.
4232 "d_truncate"
4234 From d_truncate.U:
4235 This variable conditionally defines "HAS_TRUNCATE" if truncate() is
4237 available to truncate files.
4238 "d_truncl"
4240 From d_truncl.U:
4241 This variable conditionally defines the "HAS_TRUNCL" symbol, which
4243 indicates to the C program that the truncl() routine is available
4244 to round long doubles towards zero. If copysignl is also present,
4245 we can emulate modfl.
4246 "d_ttyname_r"
4248 From d_ttyname_r.U:
4249 This variable conditionally defines the "HAS_TTYNAME_R" symbol,
4251 which indicates to the C program that the ttyname_r() routine is
4252 available.
4253 "d_tzname"
4255 From d_tzname.U:
4256 This variable conditionally defines "HAS_TZNAME" if tzname[] is
4258 available to access timezone names.
4259 "d_u32align"
4261 From d_u32align.U:
4262 This variable tells whether you must access character data through
4264 U32-aligned pointers.
4265 "d_ualarm"
4267 From d_ualarm.U:
4268 This variable conditionally defines the "HAS_UALARM" symbol, which
4270 indicates to the C program that the ualarm() routine is available.
4271 "d_umask"
4273 From d_umask.U:
4274 This variable conditionally defines the "HAS_UMASK" symbol, which
4276 indicates to the C program that the umask() routine is available.
4277 to set and get the value of the file creation mask.
4278 "d_uname"
4280 From d_gethname.U:
4281 This variable conditionally defines the "HAS_UNAME" symbol, which
4283 indicates to the C program that the uname() routine may be used to
4284 derive the host name.
4285 "d_union_semun"
4287 From d_union_semun.U:
4288 This variable conditionally defines "HAS_UNION_SEMUN" if the union
4290 semun is defined by including <sys/sem.h>.
4291 "d_unlinkat"
4293 From d_fsat.U:
4294 This variable conditionally defines the "HAS_UNLINKAT" symbol,
4296 which indicates the "POSIX" unlinkat() function isavailable.
4297 "d_unordered"
4299 From d_unordered.U:
4300 This variable conditionally defines the "HAS_UNORDERED" symbol,
4302 which indicates to the C program that the unordered() routine is
4303 available.
4304 "d_unsetenv"
4306 From d_unsetenv.U:
4307 This variable conditionally defines the "HAS_UNSETENV" symbol,
4309 which indicates to the C program that the unsetenv () routine is
4310 available.
4311 "d_uselocale"
4313 From d_newlocale.U:
4314 This variable conditionally defines the "HAS_USELOCALE" symbol,
4316 which indicates to the C program that the uselocale() routine is
4317 available to set the current locale for the calling thread.
4318 "d_usleep"
4320 From d_usleep.U:
4321 This variable conditionally defines "HAS_USLEEP" if usleep() is
4323 available to do high granularity sleeps.
4324 "d_usleepproto"
4326 From d_usleepproto.U:
4327 This variable conditionally defines the "HAS_USLEEP_PROTO" symbol,
4329 which indicates to the C program that the system provides a
4330 prototype for the usleep() function. Otherwise, it is up to the
4331 program to supply one.
4332 "d_ustat"
4334 From d_ustat.U:
4335 This variable conditionally defines "HAS_USTAT" if ustat() is
4337 available to query file system statistics by dev_t.
4338 "d_vendorarch"
4340 From vendorarch.U:
4341 This variable conditionally defined "PERL_VENDORARCH".
4343 "d_vendorbin"
4345 From vendorbin.U:
4346 This variable conditionally defines "PERL_VENDORBIN".
4348 "d_vendorlib"
4350 From vendorlib.U:
4351 This variable conditionally defines "PERL_VENDORLIB".
4353 "d_vendorscript"
4355 From vendorscript.U:
4356 This variable conditionally defines "PERL_VENDORSCRIPT".
4358 "d_vfork"
4360 From d_vfork.U:
4361 This variable conditionally defines the "HAS_VFORK" symbol, which
4363 indicates the vfork() routine is available.
4364 "d_void_closedir"
4366 From d_closedir.U:
4367 This variable conditionally defines "VOID_CLOSEDIR" if closedir()
4369 does not return a value.
4370 "d_voidsig"
4372 From d_voidsig.U:
4373 This variable conditionally defines "VOIDSIG" if this system
4375 declares "void (*signal(...))()" in signal.h. The old way was to
4376 declare it as "int (*signal(...))()".
4377 "d_voidtty"
4379 From i_sysioctl.U:
4380 This variable conditionally defines "USE_IOCNOTTY" to indicate that
4382 the ioctl() call with "TIOCNOTTY" should be used to void tty
4383 association. Otherwise (on "USG" probably), it is enough to close
4384 the standard file descriptors and do a setpgrp().
4385 "d_vsnprintf"
4387 From d_snprintf.U:
4388 This variable conditionally defines the "HAS_VSNPRINTF" symbol,
4390 which indicates to the C program that the vsnprintf () library
4391 function is available.
4392 "d_wait4"
4394 From d_wait4.U:
4395 This variable conditionally defines the HAS_WAIT4 symbol, which
4397 indicates the wait4() routine is available.
4398 "d_waitpid"
4400 From d_waitpid.U:
4401 This variable conditionally defines "HAS_WAITPID" if waitpid() is
4403 available to wait for child process.
4404 "d_wcrtomb"
4406 From d_wcrtomb.U:
4407 This variable conditionally defines the "HAS_WCRTOMB" symbol if the
4409 wcrtomb() routine is available to be used to convert a wide
4410 character into a multi-byte character.
4411 "d_wcscmp"
4413 From d_wcscmp.U:
4414 This variable conditionally defines the "HAS_WCSCMP" symbol if the
4416 wcscmp() routine is available and can be used to compare wide
4417 character strings.
4418 "d_wcstombs"
4420 From d_wcstombs.U:
4421 This variable conditionally defines the "HAS_WCSTOMBS" symbol,
4423 which indicates to the C program that the wcstombs() routine is
4424 available to convert wide character strings to multibyte strings.
4425 "d_wcsxfrm"
4427 From d_wcsxfrm.U:
4428 This variable conditionally defines the "HAS_WCSXFRM" symbol if the
4430 wcsxfrm() routine is available and can be used to compare wide
4431 character strings.
4432 "d_wctomb"
4434 From d_wctomb.U:
4435 This variable conditionally defines the "HAS_WCTOMB" symbol, which
4437 indicates to the C program that the wctomb() routine is available
4438 to convert a wide character to a multibyte.
4439 "d_writev"
4441 From d_writev.U:
4442 This variable conditionally defines the "HAS_WRITEV" symbol, which
4444 indicates to the C program that the writev() routine is available.
4445 "d_xenix"
4447 From Guess.U:
4448 This variable conditionally defines the symbol "XENIX", which
4450 alerts the C program that it runs under Xenix.
4451 "date"
4453 From Loc.U:
4454 This variable is used internally by Configure to determine the full
4456 pathname (if any) of the date program. After Configure runs, the
4457 value is reset to a plain "date" and is not useful.
4458 "db_hashtype"
4460 From i_db.U:
4461 This variable contains the type of the hash structure element in
4463 the <db.h> header file. In older versions of "DB", it was int,
4464 while in newer ones it is u_int32_t.
4465 "db_prefixtype"
4467 From i_db.U:
4468 This variable contains the type of the prefix structure element in
4470 the <db.h> header file. In older versions of "DB", it was int,
4471 while in newer ones it is size_t.
4472 "db_version_major"
4474 From i_db.U:
4475 This variable contains the major version number of Berkeley "DB"
4477 found in the <db.h> header file.
4478 "db_version_minor"
4480 From i_db.U:
4481 This variable contains the minor version number of Berkeley "DB"
4483 found in the <db.h> header file. For "DB" version 1 this is always
4484 0.
4485 "db_version_patch"
4487 From i_db.U:
4488 This variable contains the patch version number of Berkeley "DB"
4490 found in the <db.h> header file. For "DB" version 1 this is always
4491 0.
4492 "default_inc_excludes_dot"
4494 From defaultincdot.U:
4495 When defined, remove the legacy . from @"INC"
4497 "direntrytype"
4499 From i_dirent.U:
4500 This symbol is set to "struct direct" or "struct dirent" depending
4502 on whether dirent is available or not. You should use this pseudo
4503 type to portably declare your directory entries.
4504 "dlext"
4506 From dlext.U:
4507 This variable contains the extension that is to be used for the
4509 dynamically loaded modules that perl generates.
4510 "dlsrc"
4512 From dlsrc.U:
4513 This variable contains the name of the dynamic loading file that
4515 will be used with the package.
4516 "doubleinfbytes"
4518 From infnan.U:
4519 This variable contains comma-separated list of hexadecimal bytes
4521 for the double precision infinity.
4522 "doublekind"
4524 From longdblfio.U:
4525 This variable, if defined, encodes the type of a double: 1 = "IEEE"
4527 754 32-bit little endian, 2 = "IEEE" 754 32-bit big endian, 3 =
4528 "IEEE" 754 64-bit little endian, 4 = "IEEE" 754 64-bit big endian,
4529 5 = "IEEE" 754 128-bit little endian, 6 = "IEEE" 754 128-bit big
4530 endian, 7 = "IEEE" 754 64-bit mixed endian le-be, 8 = "IEEE" 754
4531 64-bit mixed endian be-le, 9 = "VAX" 32bit little endian F float
4532 format 10 = "VAX" 64bit little endian D float format 11 = "VAX"
4533 64bit little endian G float format 12 = "IBM" 32bit format 13 =
4534 "IBM" 64bit format 14 = Cray 64bit format -1 = unknown format.
4535 "doublemantbits"
4537 From mantbits.U:
4538 This symbol, if defined, tells how many mantissa bits there are in
4540 double precision floating point format. Note that this is usually
4541 "DBL_MANT_DIG" minus one, since with the standard "IEEE" 754
4542 formats "DBL_MANT_DIG" includes the implicit bit which doesn't
4543 really exist.
4544 "doublenanbytes"
4546 From infnan.U:
4547 This variable contains comma-separated list of hexadecimal bytes
4549 for the double precision not-a-number.
4550 "doublesize"
4552 From doublesize.U:
4553 This variable contains the value of the "DOUBLESIZE" symbol, which
4555 indicates to the C program how many bytes there are in a double.
4556 "drand01"
4558 From randfunc.U:
4559 Indicates the macro to be used to generate normalized random
4561 numbers. Uses randfunc, often divided by (double) (((unsigned
4562 long) 1 << randbits)) in order to normalize the result. In C
4563 programs, the macro "Drand01" is mapped to drand01.
4564 "drand48_r_proto"
4566 From d_drand48_r.U:
4567 This variable encodes the prototype of drand48_r. It is zero if
4569 d_drand48_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
4570 of reentr.h if d_drand48_r is defined.
4571 "dtrace"
4573 From usedtrace.U:
4574 This variable holds the location of the dtrace executable.
4576 "dtraceobject"
4578 From dtraceobject.U:
4579 Whether we need to build an object file with the dtrace tool.
4581 "dtracexnolibs"
4583 From dtraceobject.U:
4584 Whether dtrace accepts -xnolibs. If available we call dtrace -h
4586 and dtrace -G with -xnolibs to allow dtrace to run in a jail on
4587 FreeBSD.
4588 "dynamic_ext"
4590 From Extensions.U:
4591 This variable holds a list of "XS" extension files we want to link
4593 dynamically into the package. It is used by Makefile.
4594 e
4596 "eagain"
4597 From nblock_io.U:
4598 This variable bears the symbolic errno code set by read() when no
4600 data is present on the file and non-blocking I/O was enabled
4601 (otherwise, read() blocks naturally).
4602 "ebcdic"
4604 From ebcdic.U:
4605 This variable conditionally defines "EBCDIC" if this system uses
4607 "EBCDIC" encoding.
4608 "echo"
4610 From Loc.U:
4611 This variable is used internally by Configure to determine the full
4613 pathname (if any) of the echo program. After Configure runs, the
4614 value is reset to a plain "echo" and is not useful.
4615 "egrep"
4617 From Loc.U:
4618 This variable is used internally by Configure to determine the full
4620 pathname (if any) of the egrep program. After Configure runs, the
4621 value is reset to a plain "egrep" and is not useful.
4622 "emacs"
4624 From Loc.U:
4625 This variable is defined but not used by Configure. The value is
4627 the empty string and is not useful.
4628 "endgrent_r_proto"
4630 From d_endgrent_r.U:
4631 This variable encodes the prototype of endgrent_r. It is zero if
4633 d_endgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4634 macros of reentr.h if d_endgrent_r is defined.
4635 "endhostent_r_proto"
4637 From d_endhostent_r.U:
4638 This variable encodes the prototype of endhostent_r. It is zero if
4640 d_endhostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4641 macros of reentr.h if d_endhostent_r is defined.
4642 "endnetent_r_proto"
4644 From d_endnetent_r.U:
4645 This variable encodes the prototype of endnetent_r. It is zero if
4647 d_endnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4648 macros of reentr.h if d_endnetent_r is defined.
4649 "endprotoent_r_proto"
4651 From d_endprotoent_r.U:
4652 This variable encodes the prototype of endprotoent_r. It is zero
4654 if d_endprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4655 macros of reentr.h if d_endprotoent_r is defined.
4656 "endpwent_r_proto"
4658 From d_endpwent_r.U:
4659 This variable encodes the prototype of endpwent_r. It is zero if
4661 d_endpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4662 macros of reentr.h if d_endpwent_r is defined.
4663 "endservent_r_proto"
4665 From d_endservent_r.U:
4666 This variable encodes the prototype of endservent_r. It is zero if
4668 d_endservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4669 macros of reentr.h if d_endservent_r is defined.
4670 "eunicefix"
4672 From Init.U:
4673 When running under Eunice this variable contains a command which
4675 will convert a shell script to the proper form of text file for it
4676 to be executable by the shell. On other systems it is a no-op.
4677 "exe_ext"
4679 From Unix.U:
4680 This is an old synonym for _exe.
4682 "expr"
4684 From Loc.U:
4685 This variable is used internally by Configure to determine the full
4687 pathname (if any) of the expr program. After Configure runs, the
4688 value is reset to a plain "expr" and is not useful.
4689 "extensions"
4691 From Extensions.U:
4692 This variable holds a list of all extension files (both "XS" and
4694 non-xs) installed with the package. It is propagated to Config.pm
4695 and is typically used to test whether a particular extension is
4696 available.
4697 "extern_C"
4699 From Csym.U:
4700 "ANSI" C requires "extern" where C++ requires 'extern "C"'. This
4702 variable can be used in Configure to do the right thing.
4703 "extras"
4705 From Extras.U:
4706 This variable holds a list of extra modules to install.
4708 f
4710 "fflushall"
4711 From fflushall.U:
4712 This symbol, if defined, tells that to flush all pending stdio
4714 output one must loop through all the stdio file handles stored in
4715 an array and fflush them. Note that if fflushNULL is defined,
4716 fflushall will not even be probed for and will be left undefined.
4717 "fflushNULL"
4719 From fflushall.U:
4720 This symbol, if defined, tells that fflush("NULL") correctly
4722 flushes all pending stdio output without side effects. In
4723 particular, on some platforms calling fflush("NULL") *still*
4724 corrupts "STDIN" if it is a pipe.
4725 "find"
4727 From Loc.U:
4728 This variable is defined but not used by Configure. The value is
4730 the empty string and is not useful.
4731 "firstmakefile"
4733 From Unix.U:
4734 This variable defines the first file searched by make. On unix, it
4736 is makefile (then Makefile). On case-insensitive systems, it might
4737 be something else. This is only used to deal with convoluted make
4738 depend tricks.
4739 "flex"
4741 From Loc.U:
4742 This variable is defined but not used by Configure. The value is
4744 the empty string and is not useful.
4745 "fpossize"
4747 From fpossize.U:
4748 This variable contains the size of a fpostype in bytes.
4750 "fpostype"
4752 From fpostype.U:
4753 This variable defines Fpos_t to be something like fpos_t, long,
4755 uint, or whatever type is used to declare file positions in libc.
4756 "freetype"
4758 From mallocsrc.U:
4759 This variable contains the return type of free(). It is usually
4761 void, but occasionally int.
4762 "from"
4764 From Cross.U:
4765 This variable contains the command used by Configure to copy files
4767 from the target host. Useful and available only during Perl build.
4768 The string ":" if not cross-compiling.
4769 "full_ar"
4771 From Loc_ar.U:
4772 This variable contains the full pathname to "ar", whether or not
4774 the user has specified "portability". This is only used in the
4775 Makefile.SH.
4776 "full_csh"
4778 From d_csh.U:
4779 This variable contains the full pathname to "csh", whether or not
4781 the user has specified "portability". This is only used in the
4782 compiled C program, and we assume that all systems which can share
4783 this executable will have the same full pathname to csh.
4784 "full_sed"
4786 From Loc_sed.U:
4787 This variable contains the full pathname to "sed", whether or not
4789 the user has specified "portability". This is only used in the
4790 compiled C program, and we assume that all systems which can share
4791 this executable will have the same full pathname to sed.
4792 g
4794 "gccansipedantic"
4795 From gccvers.U:
4796 If "GNU" cc (gcc) is used, this variable will enable (if set) the
4798 -ansi and -pedantic ccflags for building core files (through cflags
4799 script). (See Porting/pumpkin.pod for full description).
4800 "gccosandvers"
4802 From gccvers.U:
4803 If "GNU" cc (gcc) is used, this variable holds the operating system
4805 and version used to compile gcc. It is set to '' if not gcc, or if
4806 nothing useful can be parsed as the os version.
4807 "gccversion"
4809 From gccvers.U:
4810 If "GNU" cc (gcc) is used, this variable holds 1 or 2 to indicate
4812 whether the compiler is version 1 or 2. This is used in setting
4813 some of the default cflags. It is set to '' if not gcc.
4814 "getgrent_r_proto"
4816 From d_getgrent_r.U:
4817 This variable encodes the prototype of getgrent_r. It is zero if
4819 d_getgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4820 macros of reentr.h if d_getgrent_r is defined.
4821 "getgrgid_r_proto"
4823 From d_getgrgid_r.U:
4824 This variable encodes the prototype of getgrgid_r. It is zero if
4826 d_getgrgid_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4827 macros of reentr.h if d_getgrgid_r is defined.
4828 "getgrnam_r_proto"
4830 From d_getgrnam_r.U:
4831 This variable encodes the prototype of getgrnam_r. It is zero if
4833 d_getgrnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4834 macros of reentr.h if d_getgrnam_r is defined.
4835 "gethostbyaddr_r_proto"
4837 From d_gethostbyaddr_r.U:
4838 This variable encodes the prototype of gethostbyaddr_r. It is zero
4840 if d_gethostbyaddr_r is undef, and one of the
4841 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_gethostbyaddr_r is
4842 defined.
4843 "gethostbyname_r_proto"
4845 From d_gethostbyname_r.U:
4846 This variable encodes the prototype of gethostbyname_r. It is zero
4848 if d_gethostbyname_r is undef, and one of the
4849 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_gethostbyname_r is
4850 defined.
4851 "gethostent_r_proto"
4853 From d_gethostent_r.U:
4854 This variable encodes the prototype of gethostent_r. It is zero if
4856 d_gethostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4857 macros of reentr.h if d_gethostent_r is defined.
4858 "getlogin_r_proto"
4860 From d_getlogin_r.U:
4861 This variable encodes the prototype of getlogin_r. It is zero if
4863 d_getlogin_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4864 macros of reentr.h if d_getlogin_r is defined.
4865 "getnetbyaddr_r_proto"
4867 From d_getnetbyaddr_r.U:
4868 This variable encodes the prototype of getnetbyaddr_r. It is zero
4870 if d_getnetbyaddr_r is undef, and one of the
4871 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getnetbyaddr_r is
4872 defined.
4873 "getnetbyname_r_proto"
4875 From d_getnetbyname_r.U:
4876 This variable encodes the prototype of getnetbyname_r. It is zero
4878 if d_getnetbyname_r is undef, and one of the
4879 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getnetbyname_r is
4880 defined.
4881 "getnetent_r_proto"
4883 From d_getnetent_r.U:
4884 This variable encodes the prototype of getnetent_r. It is zero if
4886 d_getnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4887 macros of reentr.h if d_getnetent_r is defined.
4888 "getprotobyname_r_proto"
4890 From d_getprotobyname_r.U:
4891 This variable encodes the prototype of getprotobyname_r. It is
4893 zero if d_getprotobyname_r is undef, and one of the
4894 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getprotobyname_r is
4895 defined.
4896 "getprotobynumber_r_proto"
4898 From d_getprotobynumber_r.U:
4899 This variable encodes the prototype of getprotobynumber_r. It is
4901 zero if d_getprotobynumber_r is undef, and one of the
4902 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getprotobynumber_r
4903 is defined.
4904 "getprotoent_r_proto"
4906 From d_getprotoent_r.U:
4907 This variable encodes the prototype of getprotoent_r. It is zero
4909 if d_getprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4910 macros of reentr.h if d_getprotoent_r is defined.
4911 "getpwent_r_proto"
4913 From d_getpwent_r.U:
4914 This variable encodes the prototype of getpwent_r. It is zero if
4916 d_getpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4917 macros of reentr.h if d_getpwent_r is defined.
4918 "getpwnam_r_proto"
4920 From d_getpwnam_r.U:
4921 This variable encodes the prototype of getpwnam_r. It is zero if
4923 d_getpwnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4924 macros of reentr.h if d_getpwnam_r is defined.
4925 "getpwuid_r_proto"
4927 From d_getpwuid_r.U:
4928 This variable encodes the prototype of getpwuid_r. It is zero if
4930 d_getpwuid_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4931 macros of reentr.h if d_getpwuid_r is defined.
4932 "getservbyname_r_proto"
4934 From d_getservbyname_r.U:
4935 This variable encodes the prototype of getservbyname_r. It is zero
4937 if d_getservbyname_r is undef, and one of the
4938 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getservbyname_r is
4939 defined.
4940 "getservbyport_r_proto"
4942 From d_getservbyport_r.U:
4943 This variable encodes the prototype of getservbyport_r. It is zero
4945 if d_getservbyport_r is undef, and one of the
4946 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getservbyport_r is
4947 defined.
4948 "getservent_r_proto"
4950 From d_getservent_r.U:
4951 This variable encodes the prototype of getservent_r. It is zero if
4953 d_getservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4954 macros of reentr.h if d_getservent_r is defined.
4955 "getspnam_r_proto"
4957 From d_getspnam_r.U:
4958 This variable encodes the prototype of getspnam_r. It is zero if
4960 d_getspnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4961 macros of reentr.h if d_getspnam_r is defined.
4962 "gidformat"
4964 From gidf.U:
4965 This variable contains the format string used for printing a Gid_t.
4967 "gidsign"
4969 From gidsign.U:
4970 This variable contains the signedness of a gidtype. 1 for
4972 unsigned, -1 for signed.
4973 "gidsize"
4975 From gidsize.U:
4976 This variable contains the size of a gidtype in bytes.
4978 "gidtype"
4980 From gidtype.U:
4981 This variable defines Gid_t to be something like gid_t, int,
4983 ushort, or whatever type is used to declare the return type of
4984 getgid(). Typically, it is the type of group ids in the kernel.
4985 "glibpth"
4987 From libpth.U:
4988 This variable holds the general path (space-separated) used to find
4990 libraries. It may contain directories that do not exist on this
4991 platform, libpth is the cleaned-up version.
4992 "gmake"
4994 From Loc.U:
4995 This variable is used internally by Configure to determine the full
4997 pathname (if any) of the gmake program. After Configure runs, the
4998 value is reset to a plain "gmake" and is not useful.
4999 "gmtime_r_proto"
5001 From d_gmtime_r.U:
5002 This variable encodes the prototype of gmtime_r. It is zero if
5004 d_gmtime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
5005 of reentr.h if d_gmtime_r is defined.
5006 "gnulibc_version"
5008 From d_gnulibc.U:
5009 This variable contains the version number of the "GNU" C library.
5011 It is usually something like 2.2.5. It is a plain '' if this is
5012 not the "GNU" C library, or if the version is unknown.
5013 "grep"
5015 From Loc.U:
5016 This variable is used internally by Configure to determine the full
5018 pathname (if any) of the grep program. After Configure runs, the
5019 value is reset to a plain "grep" and is not useful.
5020 "groupcat"
5022 From nis.U:
5023 This variable contains a command that produces the text of the
5025 /etc/group file. This is normally "cat /etc/group", but can be
5026 "ypcat group" when "NIS" is used. On some systems, such as os390,
5027 there may be no equivalent command, in which case this variable is
5028 unset.
5029 "groupstype"
5031 From groupstype.U:
5032 This variable defines Groups_t to be something like gid_t, int,
5034 ushort, or whatever type is used for the second argument to
5035 getgroups() and setgroups(). Usually, this is the same as gidtype
5036 (gid_t), but sometimes it isn't.
5037 "gzip"
5039 From Loc.U:
5040 This variable is used internally by Configure to determine the full
5042 pathname (if any) of the gzip program. After Configure runs, the
5043 value is reset to a plain "gzip" and is not useful.
5044 h
5046 "h_fcntl"
5047 From h_fcntl.U:
5048 This is variable gets set in various places to tell i_fcntl that
5050 <fcntl.h> should be included.
5051 "h_sysfile"
5053 From h_sysfile.U:
5054 This is variable gets set in various places to tell i_sys_file that
5056 <sys/file.h> should be included.
5057 "hint"
5059 From Oldconfig.U:
5060 Gives the type of hints used for previous answers. May be one of
5062 "default", "recommended" or "previous".
5063 "hostcat"
5065 From nis.U:
5066 This variable contains a command that produces the text of the
5068 /etc/hosts file. This is normally "cat /etc/hosts", but can be
5069 "ypcat hosts" when "NIS" is used. On some systems, such as os390,
5070 there may be no equivalent command, in which case this variable is
5071 unset.
5072 "hostgenerate"
5074 From Cross.U:
5075 This variable contains the path to a generate_uudmap binary that
5077 can be run on the host "OS" when cross-compiling. Useful and
5078 available only during Perl build. Empty string '' if not cross-
5079 compiling.
5080 "hostosname"
5082 From Cross.U:
5083 This variable contains the original value of $^O for hostperl when
5085 cross-compiling. This is useful to pick the proper tools when
5086 running build code in the host. Empty string '' if not cross-
5087 compiling.
5088 "hostperl"
5090 From Cross.U:
5091 This variable contains the path to a miniperl binary that can be
5093 run on the host "OS" when cross-compiling. Useful and available
5094 only during Perl build. Empty string '' if not cross-compiling.
5095 "html1dir"
5097 From html1dir.U:
5098 This variable contains the name of the directory in which html
5100 source pages are to be put. This directory is for pages that
5101 describe whole programs, not libraries or modules. It is intended
5102 to correspond roughly to section 1 of the Unix manuals.
5103 "html1direxp"
5105 From html1dir.U:
5106 This variable is the same as the html1dir variable, but is filename
5108 expanded at configuration time, for convenient use in makefiles.
5109 "html3dir"
5111 From html3dir.U:
5112 This variable contains the name of the directory in which html
5114 source pages are to be put. This directory is for pages that
5115 describe libraries or modules. It is intended to correspond
5116 roughly to section 3 of the Unix manuals.
5117 "html3direxp"
5119 From html3dir.U:
5120 This variable is the same as the html3dir variable, but is filename
5122 expanded at configuration time, for convenient use in makefiles.
5123 i
5125 "i16size"
5126 From perlxv.U:
5127 This variable is the size of an I16 in bytes.
5129 "i16type"
5131 From perlxv.U:
5132 This variable contains the C type used for Perl's I16.
5134 "i32size"
5136 From perlxv.U:
5137 This variable is the size of an I32 in bytes.
5139 "i32type"
5141 From perlxv.U:
5142 This variable contains the C type used for Perl's I32.
5144 "i64size"
5146 From perlxv.U:
5147 This variable is the size of an I64 in bytes.
5149 "i64type"
5151 From perlxv.U:
5152 This variable contains the C type used for Perl's I64.
5154 "i8size"
5156 From perlxv.U:
5157 This variable is the size of an I8 in bytes.
5159 "i8type"
5161 From perlxv.U:
5162 This variable contains the C type used for Perl's I8.
5164 "i_arpainet"
5166 From i_arpainet.U:
5167 This variable conditionally defines the "I_ARPA_INET" symbol, and
5169 indicates whether a C program should include <arpa/inet.h>.
5170 "i_bfd"
5172 From i_bfd.U:
5173 This variable conditionally defines the "I_BFD" symbol, and
5175 indicates whether a C program can include <bfd.h>.
5176 "i_bsdioctl"
5178 From i_sysioctl.U:
5179 This variable conditionally defines the "I_SYS_BSDIOCTL" symbol,
5181 which indicates to the C program that <sys/bsdioctl.h> exists and
5182 should be included.
5183 "i_crypt"
5185 From i_crypt.U:
5186 This variable conditionally defines the "I_CRYPT" symbol, and
5188 indicates whether a C program should include <crypt.h>.
5189 "i_db"
5191 From i_db.U:
5192 This variable conditionally defines the "I_DB" symbol, and
5194 indicates whether a C program may include Berkeley's "DB" include
5195 file <db.h>.
5196 "i_dbm"
5198 From i_dbm.U:
5199 This variable conditionally defines the "I_DBM" symbol, which
5201 indicates to the C program that <dbm.h> exists and should be
5202 included.
5203 "i_dirent"
5205 From i_dirent.U:
5206 This variable conditionally defines "I_DIRENT", which indicates to
5208 the C program that it should include <dirent.h>.
5209 "i_dlfcn"
5211 From i_dlfcn.U:
5212 This variable conditionally defines the "I_DLFCN" symbol, which
5214 indicates to the C program that <dlfcn.h> exists and should be
5215 included.
5216 "i_execinfo"
5218 From i_execinfo.U:
5219 This variable conditionally defines the "I_EXECINFO" symbol, and
5221 indicates whether a C program may include <execinfo.h>, for
5222 backtrace() support.
5223 "i_fcntl"
5225 From i_fcntl.U:
5226 This variable controls the value of "I_FCNTL" (which tells the C
5228 program to include <fcntl.h>).
5229 "i_fenv"
5231 From i_fenv.U:
5232 This variable conditionally defines the "I_FENV" symbol, which
5234 indicates to the C program that <fenv.h> exists and should be
5235 included.
5236 "i_fp"
5238 From i_fp.U:
5239 This variable conditionally defines the "I_FP" symbol, and
5241 indicates whether a C program should include <fp.h>.
5242 "i_fp_class"
5244 From i_fp_class.U:
5245 This variable conditionally defines the "I_FP_CLASS" symbol, and
5247 indicates whether a C program should include <fp_class.h>.
5248 "i_gdbm"
5250 From i_gdbm.U:
5251 This variable conditionally defines the "I_GDBM" symbol, which
5253 indicates to the C program that <gdbm.h> exists and should be
5254 included.
5255 "i_gdbm_ndbm"
5257 From i_ndbm.U:
5258 This variable conditionally defines the "I_GDBM_NDBM" symbol, which
5260 indicates to the C program that <gdbm-ndbm.h> exists and should be
5261 included. This is the location of the ndbm.h compatibility file in
5262 Debian 4.0.
5263 "i_gdbmndbm"
5265 From i_ndbm.U:
5266 This variable conditionally defines the "I_GDBMNDBM" symbol, which
5268 indicates to the C program that <gdbm/ndbm.h> exists and should be
5269 included. This was the location of the ndbm.h compatibility file
5270 in RedHat 7.1.
5271 "i_grp"
5273 From i_grp.U:
5274 This variable conditionally defines the "I_GRP" symbol, and
5276 indicates whether a C program should include <grp.h>.
5277 "i_ieeefp"
5279 From i_ieeefp.U:
5280 This variable conditionally defines the "I_IEEEFP" symbol, and
5282 indicates whether a C program should include <ieeefp.h>.
5283 "i_inttypes"
5285 From i_inttypes.U:
5286 This variable conditionally defines the "I_INTTYPES" symbol, and
5288 indicates whether a C program should include <inttypes.h>.
5289 "i_langinfo"
5291 From i_langinfo.U:
5292 This variable conditionally defines the "I_LANGINFO" symbol, and
5294 indicates whether a C program should include <langinfo.h>.
5295 "i_libutil"
5297 From i_libutil.U:
5298 This variable conditionally defines the "I_LIBUTIL" symbol, and
5300 indicates whether a C program should include <libutil.h>.
5301 "i_locale"
5303 From i_locale.U:
5304 This variable conditionally defines the "I_LOCALE" symbol, and
5306 indicates whether a C program should include <locale.h>.
5307 "i_machcthr"
5309 From i_machcthr.U:
5310 This variable conditionally defines the "I_MACH_CTHREADS" symbol,
5312 and indicates whether a C program should include <mach/cthreads.h>.
5313 "i_malloc"
5315 From i_malloc.U:
5316 This variable conditionally defines the "I_MALLOC" symbol, and
5318 indicates whether a C program should include <malloc.h>.
5319 "i_mallocmalloc"
5321 From i_mallocmalloc.U:
5322 This variable conditionally defines the "I_MALLOCMALLOC" symbol,
5324 and indicates whether a C program should include <malloc/malloc.h>.
5325 "i_mntent"
5327 From i_mntent.U:
5328 This variable conditionally defines the "I_MNTENT" symbol, and
5330 indicates whether a C program should include <mntent.h>.
5331 "i_ndbm"
5333 From i_ndbm.U:
5334 This variable conditionally defines the "I_NDBM" symbol, which
5336 indicates to the C program that <ndbm.h> exists and should be
5337 included.
5338 "i_netdb"
5340 From i_netdb.U:
5341 This variable conditionally defines the "I_NETDB" symbol, and
5343 indicates whether a C program should include <netdb.h>.
5344 "i_neterrno"
5346 From i_neterrno.U:
5347 This variable conditionally defines the "I_NET_ERRNO" symbol, which
5349 indicates to the C program that <net/errno.h> exists and should be
5350 included.
5351 "i_netinettcp"
5353 From i_netinettcp.U:
5354 This variable conditionally defines the "I_NETINET_TCP" symbol, and
5356 indicates whether a C program should include <netinet/tcp.h>.
5357 "i_niin"
5359 From i_niin.U:
5360 This variable conditionally defines "I_NETINET_IN", which indicates
5362 to the C program that it should include <netinet/in.h>. Otherwise,
5363 you may try <sys/in.h>.
5364 "i_poll"
5366 From i_poll.U:
5367 This variable conditionally defines the "I_POLL" symbol, and
5369 indicates whether a C program should include <poll.h>.
5370 "i_prot"
5372 From i_prot.U:
5373 This variable conditionally defines the "I_PROT" symbol, and
5375 indicates whether a C program should include <prot.h>.
5376 "i_pthread"
5378 From i_pthread.U:
5379 This variable conditionally defines the "I_PTHREAD" symbol, and
5381 indicates whether a C program should include <pthread.h>.
5382 "i_pwd"
5384 From i_pwd.U:
5385 This variable conditionally defines "I_PWD", which indicates to the
5387 C program that it should include <pwd.h>.
5388 "i_quadmath"
5390 From i_quadmath.U:
5391 This variable conditionally defines "I_QUADMATH", which indicates
5393 to the C program that it should include <quadmath.h>.
5394 "i_rpcsvcdbm"
5396 From i_dbm.U:
5397 This variable conditionally defines the "I_RPCSVC_DBM" symbol,
5399 which indicates to the C program that <rpcsvc/dbm.h> exists and
5400 should be included. Some System V systems might need this instead
5401 of <dbm.h>.
5402 "i_sgtty"
5404 From i_termio.U:
5405 This variable conditionally defines the "I_SGTTY" symbol, which
5407 indicates to the C program that it should include <sgtty.h> rather
5408 than <termio.h>.
5409 "i_shadow"
5411 From i_shadow.U:
5412 This variable conditionally defines the "I_SHADOW" symbol, and
5414 indicates whether a C program should include <shadow.h>.
5415 "i_socks"
5417 From i_socks.U:
5418 This variable conditionally defines the "I_SOCKS" symbol, and
5420 indicates whether a C program should include <socks.h>.
5421 "i_stdbool"
5423 From i_stdbool.U:
5424 This variable conditionally defines the "I_STDBOOL" symbol, which
5426 indicates to the C program that <stdbool.h> exists and should be
5427 included.
5428 "i_stdint"
5430 From i_stdint.U:
5431 This variable conditionally defines the "I_STDINT" symbol, which
5433 indicates to the C program that <stdint.h> exists and should be
5434 included.
5435 "i_stdlib"
5437 From i_stdlib.U:
5438 This variable unconditionally defines the "I_STDLIB" symbol.
5440 "i_sunmath"
5442 From i_sunmath.U:
5443 This variable conditionally defines the "I_SUNMATH" symbol, and
5445 indicates whether a C program should include <sunmath.h>.
5446 "i_sysaccess"
5448 From i_sysaccess.U:
5449 This variable conditionally defines the "I_SYS_ACCESS" symbol, and
5451 indicates whether a C program should include <sys/access.h>.
5452 "i_sysdir"
5454 From i_sysdir.U:
5455 This variable conditionally defines the "I_SYS_DIR" symbol, and
5457 indicates whether a C program should include <sys/dir.h>.
5458 "i_sysfile"
5460 From i_sysfile.U:
5461 This variable conditionally defines the "I_SYS_FILE" symbol, and
5463 indicates whether a C program should include <sys/file.h> to get
5464 "R_OK" and friends.
5465 "i_sysfilio"
5467 From i_sysioctl.U:
5468 This variable conditionally defines the "I_SYS_FILIO" symbol, which
5470 indicates to the C program that <sys/filio.h> exists and should be
5471 included in preference to <sys/ioctl.h>.
5472 "i_sysin"
5474 From i_niin.U:
5475 This variable conditionally defines "I_SYS_IN", which indicates to
5477 the C program that it should include <sys/in.h> instead of
5478 <netinet/in.h>.
5479 "i_sysioctl"
5481 From i_sysioctl.U:
5482 This variable conditionally defines the "I_SYS_IOCTL" symbol, which
5484 indicates to the C program that <sys/ioctl.h> exists and should be
5485 included.
5486 "i_syslog"
5488 From i_syslog.U:
5489 This variable conditionally defines the "I_SYSLOG" symbol, and
5491 indicates whether a C program should include <syslog.h>.
5492 "i_sysmman"
5494 From i_sysmman.U:
5495 This variable conditionally defines the "I_SYS_MMAN" symbol, and
5497 indicates whether a C program should include <sys/mman.h>.
5498 "i_sysmode"
5500 From i_sysmode.U:
5501 This variable conditionally defines the "I_SYSMODE" symbol, and
5503 indicates whether a C program should include <sys/mode.h>.
5504 "i_sysmount"
5506 From i_sysmount.U:
5507 This variable conditionally defines the "I_SYSMOUNT" symbol, and
5509 indicates whether a C program should include <sys/mount.h>.
5510 "i_sysndir"
5512 From i_sysndir.U:
5513 This variable conditionally defines the "I_SYS_NDIR" symbol, and
5515 indicates whether a C program should include <sys/ndir.h>.
5516 "i_sysparam"
5518 From i_sysparam.U:
5519 This variable conditionally defines the "I_SYS_PARAM" symbol, and
5521 indicates whether a C program should include <sys/param.h>.
5522 "i_syspoll"
5524 From i_syspoll.U:
5525 This variable conditionally defines the "I_SYS_POLL" symbol, which
5527 indicates to the C program that it should include <sys/poll.h>.
5528 "i_sysresrc"
5530 From i_sysresrc.U:
5531 This variable conditionally defines the "I_SYS_RESOURCE" symbol,
5533 and indicates whether a C program should include <sys/resource.h>.
5534 "i_syssecrt"
5536 From i_syssecrt.U:
5537 This variable conditionally defines the "I_SYS_SECURITY" symbol,
5539 and indicates whether a C program should include <sys/security.h>.
5540 "i_sysselct"
5542 From i_sysselct.U:
5543 This variable conditionally defines "I_SYS_SELECT", which indicates
5545 to the C program that it should include <sys/select.h> in order to
5546 get the definition of struct timeval.
5547 "i_syssockio"
5549 From i_sysioctl.U:
5550 This variable conditionally defines "I_SYS_SOCKIO" to indicate to
5552 the C program that socket ioctl codes may be found in
5553 <sys/sockio.h> instead of <sys/ioctl.h>.
5554 "i_sysstat"
5556 From i_sysstat.U:
5557 This variable conditionally defines the "I_SYS_STAT" symbol, and
5559 indicates whether a C program should include <sys/stat.h>.
5560 "i_sysstatfs"
5562 From i_sysstatfs.U:
5563 This variable conditionally defines the "I_SYSSTATFS" symbol, and
5565 indicates whether a C program should include <sys/statfs.h>.
5566 "i_sysstatvfs"
5568 From i_sysstatvfs.U:
5569 This variable conditionally defines the "I_SYSSTATVFS" symbol, and
5571 indicates whether a C program should include <sys/statvfs.h>.
5572 "i_systime"
5574 From i_time.U:
5575 This variable conditionally defines "I_SYS_TIME", which indicates
5577 to the C program that it should include <sys/time.h>.
5578 "i_systimek"
5580 From i_time.U:
5581 This variable conditionally defines "I_SYS_TIME_KERNEL", which
5583 indicates to the C program that it should include <sys/time.h> with
5584 "KERNEL" defined.
5585 "i_systimes"
5587 From i_systimes.U:
5588 This variable conditionally defines the "I_SYS_TIMES" symbol, and
5590 indicates whether a C program should include <sys/times.h>.
5591 "i_systypes"
5593 From i_systypes.U:
5594 This variable conditionally defines the "I_SYS_TYPES" symbol, and
5596 indicates whether a C program should include <sys/types.h>.
5597 "i_sysuio"
5599 From i_sysuio.U:
5600 This variable conditionally defines the "I_SYSUIO" symbol, and
5602 indicates whether a C program should include <sys/uio.h>.
5603 "i_sysun"
5605 From i_sysun.U:
5606 This variable conditionally defines "I_SYS_UN", which indicates to
5608 the C program that it should include <sys/un.h> to get "UNIX"
5609 domain socket definitions.
5610 "i_sysutsname"
5612 From i_sysutsname.U:
5613 This variable conditionally defines the "I_SYSUTSNAME" symbol, and
5615 indicates whether a C program should include <sys/utsname.h>.
5616 "i_sysvfs"
5618 From i_sysvfs.U:
5619 This variable conditionally defines the "I_SYSVFS" symbol, and
5621 indicates whether a C program should include <sys/vfs.h>.
5622 "i_syswait"
5624 From i_syswait.U:
5625 This variable conditionally defines "I_SYS_WAIT", which indicates
5627 to the C program that it should include <sys/wait.h>.
5628 "i_termio"
5630 From i_termio.U:
5631 This variable conditionally defines the "I_TERMIO" symbol, which
5633 indicates to the C program that it should include <termio.h> rather
5634 than <sgtty.h>.
5635 "i_termios"
5637 From i_termio.U:
5638 This variable conditionally defines the "I_TERMIOS" symbol, which
5640 indicates to the C program that the "POSIX" <termios.h> file is to
5641 be included.
5642 "i_time"
5644 From i_time.U:
5645 This variable unconditionally defines "I_TIME", which indicates to
5647 the C program that it should include <time.h>.
5648 "i_unistd"
5650 From i_unistd.U:
5651 This variable conditionally defines the "I_UNISTD" symbol, and
5653 indicates whether a C program should include <unistd.h>.
5654 "i_ustat"
5656 From i_ustat.U:
5657 This variable conditionally defines the "I_USTAT" symbol, and
5659 indicates whether a C program should include <ustat.h>.
5660 "i_utime"
5662 From i_utime.U:
5663 This variable conditionally defines the "I_UTIME" symbol, and
5665 indicates whether a C program should include <utime.h>.
5666 "i_vfork"
5668 From i_vfork.U:
5669 This variable conditionally defines the "I_VFORK" symbol, and
5671 indicates whether a C program should include vfork.h.
5672 "i_wchar"
5674 From i_wchar.U:
5675 This variable conditionally defines the "I_WCHAR" symbol, that
5677 indicates whether a C program may include <wchar.h>.
5678 "i_wctype"
5680 From i_wctype.U:
5681 This variable conditionally defines the "I_WCTYPE" symbol, that
5683 indicates whether a C program may include <wctype.h>.
5684 "i_xlocale"
5686 From d_newlocale.U:
5687 This symbol, if defined, indicates to the C program that the header
5689 xlocale.h is available. See also xlocale_needed.
5690 "ignore_versioned_solibs"
5692 From libs.U:
5693 This variable should be non-empty if non-versioned shared libraries
5695 (libfoo.so.x.y) are to be ignored (because they cannot be linked
5696 against).
5697 "inc_version_list"
5699 From inc_version_list.U:
5700 This variable specifies the list of subdirectories in over which
5702 perl.c:incpush() and lib/lib.pm will automatically search when
5703 adding directories to @"INC". The elements in the list are
5704 separated by spaces. This is only useful if you have a perl
5705 library directory tree structured like the default one. See
5706 "INSTALL" for how this works. The versioned site_perl directory
5707 was introduced in 5.005, so that is the lowest possible value.
5708 This list includes architecture-dependent directories back to
5710 version $api_versionstring (e.g. 5.5.640) and architecture-
5711 independent directories all the way back to 5.005.
5712 "inc_version_list_init"
5714 From inc_version_list.U:
5715 This variable holds the same list as inc_version_list, but each
5717 item is enclosed in double quotes and separated by commas, suitable
5718 for use in the "PERL_INC_VERSION_LIST" initialization.
5719 "incpath"
5721 From usrinc.U:
5722 This variable must precede the normal include path to get the right
5724 one, as in $incpath/usr/include or $incpath/usr/lib. Value can be
5725 "" or /bsd43 on mips.
5726 "incpth"
5728 From libpth.U:
5729 This variable must precede the normal include path to get the right
5731 one, as in $incpath/usr/include or $incpath/usr/lib. Value can be
5732 "" or /bsd43 on mips.
5733 "inews"
5735 From Loc.U:
5736 This variable is defined but not used by Configure. The value is
5738 the empty string and is not useful.
5739 "initialinstalllocation"
5741 From bin.U:
5742 When userelocatableinc is true, this variable holds the location
5744 that make install should copy the perl binary to, with all the run-
5745 time relocatable paths calculated from this at install time. When
5746 used, it is initialized to the original value of binexp, and then
5747 binexp is set to .../, as the other binaries are found relative to
5748 the perl binary.
5749 "installarchlib"
5751 From archlib.U:
5752 This variable is really the same as archlibexp but may differ on
5754 those systems using "AFS". For extra portability, only this
5755 variable should be used in makefiles.
5756 "installbin"
5758 From bin.U:
5759 This variable is the same as binexp unless "AFS" is running in
5761 which case the user is explicitly prompted for it. This variable
5762 should always be used in your makefiles for maximum portability.
5763 "installhtml1dir"
5765 From html1dir.U:
5766 This variable is really the same as html1direxp, unless you are
5768 using a different installprefix. For extra portability, you should
5769 only use this variable within your makefiles.
5770 "installhtml3dir"
5772 From html3dir.U:
5773 This variable is really the same as html3direxp, unless you are
5775 using a different installprefix. For extra portability, you should
5776 only use this variable within your makefiles.
5777 "installman1dir"
5779 From man1dir.U:
5780 This variable is really the same as man1direxp, unless you are
5782 using "AFS" in which case it points to the read/write location
5783 whereas man1direxp only points to the read-only access location.
5784 For extra portability, you should only use this variable within
5785 your makefiles.
5786 "installman3dir"
5788 From man3dir.U:
5789 This variable is really the same as man3direxp, unless you are
5791 using "AFS" in which case it points to the read/write location
5792 whereas man3direxp only points to the read-only access location.
5793 For extra portability, you should only use this variable within
5794 your makefiles.
5795 "installprefix"
5797 From installprefix.U:
5798 This variable holds the name of the directory below which "make
5800 install" will install the package. For most users, this is the
5801 same as prefix. However, it is useful for installing the software
5802 into a different (usually temporary) location after which it can be
5803 bundled up and moved somehow to the final location specified by
5804 prefix.
5805 "installprefixexp"
5807 From installprefix.U:
5808 This variable holds the full absolute path of installprefix with
5810 all ~-expansion done.
5811 "installprivlib"
5813 From privlib.U:
5814 This variable is really the same as privlibexp but may differ on
5816 those systems using "AFS". For extra portability, only this
5817 variable should be used in makefiles.
5818 "installscript"
5820 From scriptdir.U:
5821 This variable is usually the same as scriptdirexp, unless you are
5823 on a system running "AFS", in which case they may differ slightly.
5824 You should always use this variable within your makefiles for
5825 portability.
5826 "installsitearch"
5828 From sitearch.U:
5829 This variable is really the same as sitearchexp but may differ on
5831 those systems using "AFS". For extra portability, only this
5832 variable should be used in makefiles.
5833 "installsitebin"
5835 From sitebin.U:
5836 This variable is usually the same as sitebinexp, unless you are on
5838 a system running "AFS", in which case they may differ slightly. You
5839 should always use this variable within your makefiles for
5840 portability.
5841 "installsitehtml1dir"
5843 From sitehtml1dir.U:
5844 This variable is really the same as sitehtml1direxp, unless you are
5846 using "AFS" in which case it points to the read/write location
5847 whereas html1direxp only points to the read-only access location.
5848 For extra portability, you should only use this variable within
5849 your makefiles.
5850 "installsitehtml3dir"
5852 From sitehtml3dir.U:
5853 This variable is really the same as sitehtml3direxp, unless you are
5855 using "AFS" in which case it points to the read/write location
5856 whereas html3direxp only points to the read-only access location.
5857 For extra portability, you should only use this variable within
5858 your makefiles.
5859 "installsitelib"
5861 From sitelib.U:
5862 This variable is really the same as sitelibexp but may differ on
5864 those systems using "AFS". For extra portability, only this
5865 variable should be used in makefiles.
5866 "installsiteman1dir"
5868 From siteman1dir.U:
5869 This variable is really the same as siteman1direxp, unless you are
5871 using "AFS" in which case it points to the read/write location
5872 whereas man1direxp only points to the read-only access location.
5873 For extra portability, you should only use this variable within
5874 your makefiles.
5875 "installsiteman3dir"
5877 From siteman3dir.U:
5878 This variable is really the same as siteman3direxp, unless you are
5880 using "AFS" in which case it points to the read/write location
5881 whereas man3direxp only points to the read-only access location.
5882 For extra portability, you should only use this variable within
5883 your makefiles.
5884 "installsitescript"
5886 From sitescript.U:
5887 This variable is usually the same as sitescriptexp, unless you are
5889 on a system running "AFS", in which case they may differ slightly.
5890 You should always use this variable within your makefiles for
5891 portability.
5892 "installstyle"
5894 From installstyle.U:
5895 This variable describes the "style" of the perl installation. This
5897 is intended to be useful for tools that need to manipulate entire
5898 perl distributions. Perl itself doesn't use this to find its
5899 libraries -- the library directories are stored directly in
5900 Config.pm. Currently, there are only two styles: "lib" and
5901 lib/perl5. The default library locations (e.g. privlib, sitelib)
5902 are either $prefix/lib or $prefix/lib/perl5. The former is useful
5903 if $prefix is a directory dedicated to perl (e.g. /opt/perl), while
5904 the latter is useful if $prefix is shared by many packages, e.g. if
5905 $prefix=/usr/local.
5906 Unfortunately, while this "style" variable is used to set defaults
5908 for all three directory hierarchies (core, vendor, and site), there
5909 is no guarantee that the same style is actually appropriate for all
5910 those directories. For example, $prefix might be /opt/perl, but
5911 $siteprefix might be /usr/local. (Perhaps, in retrospect, the
5912 "lib" style should never have been supported, but it did seem like
5913 a nice idea at the time.)
5914 The situation is even less clear for tools such as MakeMaker that
5916 can be used to install additional modules into non-standard places.
5917 For example, if a user intends to install a module into a private
5918 directory (perhaps by setting "PREFIX" on the Makefile.PL command
5919 line), then there is no reason to assume that the Configure-time
5920 $installstyle setting will be relevant for that "PREFIX".
5921 This may later be extended to include other information, so be
5923 careful with pattern-matching on the results.
5924 For compatibility with perl5.005 and earlier, the default setting
5926 is based on whether or not $prefix contains the string "perl".
5927 "installusrbinperl"
5929 From instubperl.U:
5930 This variable tells whether Perl should be installed also as
5932 /usr/bin/perl in addition to $installbin/perl
5933 "installvendorarch"
5935 From vendorarch.U:
5936 This variable is really the same as vendorarchexp but may differ on
5938 those systems using "AFS". For extra portability, only this
5939 variable should be used in makefiles.
5940 "installvendorbin"
5942 From vendorbin.U:
5943 This variable is really the same as vendorbinexp but may differ on
5945 those systems using "AFS". For extra portability, only this
5946 variable should be used in makefiles.
5947 "installvendorhtml1dir"
5949 From vendorhtml1dir.U:
5950 This variable is really the same as vendorhtml1direxp but may
5952 differ on those systems using "AFS". For extra portability, only
5953 this variable should be used in makefiles.
5954 "installvendorhtml3dir"
5956 From vendorhtml3dir.U:
5957 This variable is really the same as vendorhtml3direxp but may
5959 differ on those systems using "AFS". For extra portability, only
5960 this variable should be used in makefiles.
5961 "installvendorlib"
5963 From vendorlib.U:
5964 This variable is really the same as vendorlibexp but may differ on
5966 those systems using "AFS". For extra portability, only this
5967 variable should be used in makefiles.
5968 "installvendorman1dir"
5970 From vendorman1dir.U:
5971 This variable is really the same as vendorman1direxp but may differ
5973 on those systems using "AFS". For extra portability, only this
5974 variable should be used in makefiles.
5975 "installvendorman3dir"
5977 From vendorman3dir.U:
5978 This variable is really the same as vendorman3direxp but may differ
5980 on those systems using "AFS". For extra portability, only this
5981 variable should be used in makefiles.
5982 "installvendorscript"
5984 From vendorscript.U:
5985 This variable is really the same as vendorscriptexp but may differ
5987 on those systems using "AFS". For extra portability, only this
5988 variable should be used in makefiles.
5989 "intsize"
5991 From intsize.U:
5992 This variable contains the value of the "INTSIZE" symbol, which
5994 indicates to the C program how many bytes there are in an int.
5995 "issymlink"
5997 From issymlink.U:
5998 This variable holds the test command to test for a symbolic link
6000 (if they are supported). Typical values include "test -h" and
6001 "test -L".
6002 "ivdformat"
6004 From perlxvf.U:
6005 This variable contains the format string used for printing a Perl
6007 "IV" as a signed decimal integer.
6008 "ivsize"
6010 From perlxv.U:
6011 This variable is the size of an "IV" in bytes.
6013 "ivtype"
6015 From perlxv.U:
6016 This variable contains the C type used for Perl's "IV".
6018 k
6020 "known_extensions"
6021 From Extensions.U:
6022 This variable holds a list of all extensions (both "XS" and non-xs)
6024 included in the package source distribution. This information is
6025 only really of use during the Perl build, as the list makes no
6026 distinction between extensions which were build and installed, and
6027 those which where not. See "extensions" for the list of extensions
6028 actually built and available.
6029 "ksh"
6031 From Loc.U:
6032 This variable is defined but not used by Configure. The value is
6034 the empty string and is not useful.
6035 l
6037 "ld"
6038 From dlsrc.U:
6039 This variable indicates the program to be used to link libraries
6041 for dynamic loading. On some systems, it is "ld". On "ELF"
6042 systems, it should be $cc. Mostly, we'll try to respect the hint
6043 file setting.
6044 "ld_can_script"
6046 From dlsrc.U:
6047 This variable shows if the loader accepts scripts in the form of
6049 -Wl,--version-script=ld.script. This is currently only supported
6050 for "GNU" ld on "ELF" in dynamic loading builds.
6051 "lddlflags"
6053 From dlsrc.U:
6054 This variable contains any special flags that might need to be
6056 passed to $ld to create a shared library suitable for dynamic
6057 loading. It is up to the makefile to use it. For hpux, it should
6058 be "-b". For sunos 4.1, it is empty.
6059 "ldflags"
6061 From ccflags.U:
6062 This variable contains any additional C loader flags desired by the
6064 user. It is up to the Makefile to use this.
6065 "ldflags_uselargefiles"
6067 From uselfs.U:
6068 This variable contains the loader flags needed by large file builds
6070 and added to ldflags by hints files.
6071 "ldlibpthname"
6073 From libperl.U:
6074 This variable holds the name of the shared library search path,
6076 often "LD_LIBRARY_PATH". To get an empty string, the hints file
6077 must set this to "none".
6078 "less"
6080 From Loc.U:
6081 This variable is used internally by Configure to determine the full
6083 pathname (if any) of the less program. After Configure runs, the
6084 value is reset to a plain "less" and is not useful.
6085 "lib_ext"
6087 From Unix.U:
6088 This is an old synonym for _a.
6090 "libc"
6092 From libc.U:
6093 This variable contains the location of the C library.
6095 "libperl"
6097 From libperl.U:
6098 The perl executable is obtained by linking perlmain.c with libperl,
6100 any static extensions (usually just DynaLoader), and any other
6101 libraries needed on this system. libperl is usually libperl.a, but
6102 can also be libperl.so.xxx if the user wishes to build a perl
6103 executable with a shared library.
6104 "libpth"
6106 From libpth.U:
6107 This variable holds the general path (space-separated) used to find
6109 libraries. It is intended to be used by other units.
6110 "libs"
6112 From libs.U:
6113 This variable holds the additional libraries we want to use. It is
6115 up to the Makefile to deal with it. The list can be empty.
6116 "libsdirs"
6118 From libs.U:
6119 This variable holds the directory names aka dirnames of the
6121 libraries we found and accepted, duplicates are removed.
6122 "libsfiles"
6124 From libs.U:
6125 This variable holds the filenames aka basenames of the libraries we
6127 found and accepted.
6128 "libsfound"
6130 From libs.U:
6131 This variable holds the full pathnames of the libraries we found
6133 and accepted.
6134 "libspath"
6136 From libs.U:
6137 This variable holds the directory names probed for libraries.
6139 "libswanted"
6141 From Myinit.U:
6142 This variable holds a list of all the libraries we want to search.
6144 The order is chosen to pick up the c library ahead of ucb or bsd
6145 libraries for SVR4.
6146 "libswanted_uselargefiles"
6148 From uselfs.U:
6149 This variable contains the libraries needed by large file builds
6151 and added to ldflags by hints files. It is a space separated list
6152 of the library names without the "lib" prefix or any suffix, just
6153 like libswanted..
6154 "line"
6156 From Loc.U:
6157 This variable is defined but not used by Configure. The value is
6159 the empty string and is not useful.
6160 "lint"
6162 From Loc.U:
6163 This variable is defined but not used by Configure. The value is
6165 the empty string and is not useful.
6166 "lkflags"
6168 From ccflags.U:
6169 This variable contains any additional C partial linker flags
6171 desired by the user. It is up to the Makefile to use this.
6172 "ln"
6174 From Loc.U:
6175 This variable is used internally by Configure to determine the full
6177 pathname (if any) of the ln program. After Configure runs, the
6178 value is reset to a plain "ln" and is not useful.
6179 "lns"
6181 From lns.U:
6182 This variable holds the name of the command to make symbolic links
6184 (if they are supported). It can be used in the Makefile. It is
6185 either "ln -s" or "ln"
6186 "localtime_r_proto"
6188 From d_localtime_r.U:
6189 This variable encodes the prototype of localtime_r. It is zero if
6191 d_localtime_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6192 macros of reentr.h if d_localtime_r is defined.
6193 "locincpth"
6195 From ccflags.U:
6196 This variable contains a list of additional directories to be
6198 searched by the compiler. The appropriate "-I" directives will be
6199 added to ccflags. This is intended to simplify setting local
6200 directories from the Configure command line. It's not much, but it
6201 parallels the loclibpth stuff in libpth.U.
6202 "loclibpth"
6204 From libpth.U:
6205 This variable holds the paths (space-separated) used to find local
6207 libraries. It is prepended to libpth, and is intended to be easily
6208 set from the command line.
6209 "longdblinfbytes"
6211 From infnan.U:
6212 This variable contains comma-separated list of hexadecimal bytes
6214 for the long double precision infinity.
6215 "longdblkind"
6217 From d_longdbl.U:
6218 This variable, if defined, encodes the type of a long double: 0 =
6220 double, 1 = "IEEE" 754 128-bit little endian, 2 = "IEEE" 754
6221 128-bit big endian, 3 = x86 80-bit little endian, 4 = x86 80-bit
6222 big endian, 5 = double-double 128-bit little endian, 6 = double-
6223 double 128-bit big endian, 7 = 128-bit mixed-endian double-double
6224 (64-bit LEs in "BE"), 8 = 128-bit mixed-endian double-double
6225 (64-bit BEs in "LE"), 9 = 128-bit "PDP"-style mixed-endian long
6226 doubles, -1 = unknown format.
6227 "longdblmantbits"
6229 From mantbits.U:
6230 This symbol, if defined, tells how many mantissa bits there are in
6232 long double precision floating point format. Note that this can be
6233 "LDBL_MANT_DIG" minus one, since "LDBL_MANT_DIG" can include the
6234 "IEEE" 754 implicit bit. The common x86-style 80-bit long double
6235 does not have an implicit bit.
6236 "longdblnanbytes"
6238 From infnan.U:
6239 This variable contains comma-separated list of hexadecimal bytes
6241 for the long double precision not-a-number.
6242 "longdblsize"
6244 From d_longdbl.U:
6245 This variable contains the value of the "LONG_DOUBLESIZE" symbol,
6247 which indicates to the C program how many bytes there are in a long
6248 double, if this system supports long doubles. Note that this is
6249 sizeof(long double), which may include unused bytes.
6250 "longlongsize"
6252 From d_longlong.U:
6253 This variable contains the value of the "LONGLONGSIZE" symbol,
6255 which indicates to the C program how many bytes there are in a long
6256 long, if this system supports long long.
6257 "longsize"
6259 From intsize.U:
6260 This variable contains the value of the "LONGSIZE" symbol, which
6262 indicates to the C program how many bytes there are in a long.
6263 "lp"
6265 From Loc.U:
6266 This variable is defined but not used by Configure. The value is
6268 the empty string and is not useful.
6269 "lpr"
6271 From Loc.U:
6272 This variable is defined but not used by Configure. The value is
6274 the empty string and is not useful.
6275 "ls"
6277 From Loc.U:
6278 This variable is used internally by Configure to determine the full
6280 pathname (if any) of the ls program. After Configure runs, the
6281 value is reset to a plain "ls" and is not useful.
6282 "lseeksize"
6284 From lseektype.U:
6285 This variable defines lseektype to be something like off_t, long,
6287 or whatever type is used to declare lseek offset's type in the
6288 kernel (which also appears to be lseek's return type).
6289 "lseektype"
6291 From lseektype.U:
6292 This variable defines lseektype to be something like off_t, long,
6294 or whatever type is used to declare lseek offset's type in the
6295 kernel (which also appears to be lseek's return type).
6296 m
6298 "mail"
6299 From Loc.U:
6300 This variable is defined but not used by Configure. The value is
6302 the empty string and is not useful.
6303 "mailx"
6305 From Loc.U:
6306 This variable is defined but not used by Configure. The value is
6308 the empty string and is not useful.
6309 "make"
6311 From Loc.U:
6312 This variable is used internally by Configure to determine the full
6314 pathname (if any) of the make program. After Configure runs, the
6315 value is reset to a plain "make" and is not useful.
6316 "make_set_make"
6318 From make.U:
6319 Some versions of "make" set the variable "MAKE". Others do not.
6321 This variable contains the string to be included in Makefile.SH so
6322 that "MAKE" is set if needed, and not if not needed. Possible
6323 values are:
6324 make_set_make="#" # If your make program handles this for
6326 you,
6327 make_set_make="MAKE=$make" # if it doesn't.
6329 This uses a comment character so that we can distinguish a "set"
6331 value (from a previous config.sh or Configure "-D" option) from an
6332 uncomputed value.
6333 "mallocobj"
6335 From mallocsrc.U:
6336 This variable contains the name of the malloc.o that this package
6338 generates, if that malloc.o is preferred over the system malloc.
6339 Otherwise the value is null. This variable is intended for
6340 generating Makefiles. See mallocsrc.
6341 "mallocsrc"
6343 From mallocsrc.U:
6344 This variable contains the name of the malloc.c that comes with the
6346 package, if that malloc.c is preferred over the system malloc.
6347 Otherwise the value is null. This variable is intended for
6348 generating Makefiles.
6349 "malloctype"
6351 From mallocsrc.U:
6352 This variable contains the kind of ptr returned by malloc and
6354 realloc.
6355 "man1dir"
6357 From man1dir.U:
6358 This variable contains the name of the directory in which manual
6360 source pages are to be put. It is the responsibility of the
6361 Makefile.SH to get the value of this into the proper command. You
6362 must be prepared to do the ~name expansion yourself.
6363 "man1direxp"
6365 From man1dir.U:
6366 This variable is the same as the man1dir variable, but is filename
6368 expanded at configuration time, for convenient use in makefiles.
6369 "man1ext"
6371 From man1dir.U:
6372 This variable contains the extension that the manual page should
6374 have: one of "n", "l", or 1. The Makefile must supply the .. See
6375 man1dir.
6376 "man3dir"
6378 From man3dir.U:
6379 This variable contains the name of the directory in which manual
6381 source pages are to be put. It is the responsibility of the
6382 Makefile.SH to get the value of this into the proper command. You
6383 must be prepared to do the ~name expansion yourself.
6384 "man3direxp"
6386 From man3dir.U:
6387 This variable is the same as the man3dir variable, but is filename
6389 expanded at configuration time, for convenient use in makefiles.
6390 "man3ext"
6392 From man3dir.U:
6393 This variable contains the extension that the manual page should
6395 have: one of "n", "l", or 3. The Makefile must supply the .. See
6396 man3dir.
6397 "mips_type"
6399 From usrinc.U:
6400 This variable holds the environment type for the mips system.
6402 Possible values are "BSD 4.3" and "System V".
6403 "mistrustnm"
6405 From Csym.U:
6406 This variable can be used to establish a fallthrough for the cases
6408 where nm fails to find a symbol. If usenm is false or usenm is
6409 true and mistrustnm is false, this variable has no effect. If
6410 usenm is true and mistrustnm is "compile", a test program will be
6411 compiled to try to find any symbol that can't be located via nm
6412 lookup. If mistrustnm is "run", the test program will be run as
6413 well as being compiled.
6414 "mkdir"
6416 From Loc.U:
6417 This variable is used internally by Configure to determine the full
6419 pathname (if any) of the mkdir program. After Configure runs, the
6420 value is reset to a plain "mkdir" and is not useful.
6421 "mmaptype"
6423 From d_mmap.U:
6424 This symbol contains the type of pointer returned by mmap() (and
6426 simultaneously the type of the first argument). It can be "void *"
6427 or "caddr_t".
6428 "modetype"
6430 From modetype.U:
6431 This variable defines modetype to be something like mode_t, int,
6433 unsigned short, or whatever type is used to declare file modes for
6434 system calls.
6435 "more"
6437 From Loc.U:
6438 This variable is used internally by Configure to determine the full
6440 pathname (if any) of the more program. After Configure runs, the
6441 value is reset to a plain "more" and is not useful.
6442 "multiarch"
6444 From multiarch.U:
6445 This variable conditionally defines the "MULTIARCH" symbol which
6447 signifies the presence of multiplatform files. This is normally
6448 set by hints files.
6449 "mv"
6451 From Loc.U:
6452 This variable is defined but not used by Configure. The value is
6454 the empty string and is not useful.
6455 "myarchname"
6457 From archname.U:
6458 This variable holds the architecture name computed by Configure in
6460 a previous run. It is not intended to be perused by any user and
6461 should never be set in a hint file.
6462 "mydomain"
6464 From myhostname.U:
6465 This variable contains the eventual value of the "MYDOMAIN" symbol,
6467 which is the domain of the host the program is going to run on.
6468 The domain must be appended to myhostname to form a complete host
6469 name. The dot comes with mydomain, and need not be supplied by the
6470 program.
6471 "myhostname"
6473 From myhostname.U:
6474 This variable contains the eventual value of the "MYHOSTNAME"
6476 symbol, which is the name of the host the program is going to run
6477 on. The domain is not kept with hostname, but must be gotten from
6478 mydomain. The dot comes with mydomain, and need not be supplied by
6479 the program.
6480 "myuname"
6482 From Oldconfig.U:
6483 The output of "uname -a" if available, otherwise the hostname. The
6485 whole thing is then lower-cased and slashes and single quotes are
6486 removed.
6487 n
6489 "n" From n.U:
6490 This variable contains the "-n" flag if that is what causes the
6492 echo command to suppress newline. Otherwise it is null. Correct
6493 usage is $echo $n "prompt for a question: $c".
6494 "need_va_copy"
6496 From need_va_copy.U:
6497 This symbol, if defined, indicates that the system stores the
6499 variable argument list datatype, va_list, in a format that cannot
6500 be copied by simple assignment, so that some other means must be
6501 used when copying is required. As such systems vary in their
6502 provision (or non-provision) of copying mechanisms, handy.h defines
6503 a platform- "independent" macro, Perl_va_copy(src, dst), to do the
6504 job.
6505 "netdb_hlen_type"
6507 From netdbtype.U:
6508 This variable holds the type used for the 2nd argument to
6510 gethostbyaddr(). Usually, this is int or size_t or unsigned. This
6511 is only useful if you have gethostbyaddr(), naturally.
6512 "netdb_host_type"
6514 From netdbtype.U:
6515 This variable holds the type used for the 1st argument to
6517 gethostbyaddr(). Usually, this is char * or void *, possibly with
6518 or without a const prefix. This is only useful if you have
6519 gethostbyaddr(), naturally.
6520 "netdb_name_type"
6522 From netdbtype.U:
6523 This variable holds the type used for the argument to
6525 gethostbyname(). Usually, this is char * or const char *. This is
6526 only useful if you have gethostbyname(), naturally.
6527 "netdb_net_type"
6529 From netdbtype.U:
6530 This variable holds the type used for the 1st argument to
6532 getnetbyaddr(). Usually, this is int or long. This is only useful
6533 if you have getnetbyaddr(), naturally.
6534 "nm"
6536 From Loc.U:
6537 This variable is used internally by Configure to determine the full
6539 pathname (if any) of the nm program. After Configure runs, the
6540 value is reset to a plain "nm" and is not useful.
6541 "nm_opt"
6543 From usenm.U:
6544 This variable holds the options that may be necessary for nm.
6546 "nm_so_opt"
6548 From usenm.U:
6549 This variable holds the options that may be necessary for nm to
6551 work on a shared library but that can not be used on an archive
6552 library. Currently, this is only used by Linux, where nm --dynamic
6553 is *required* to get symbols from an "ELF" library which has been
6554 stripped, but nm --dynamic is *fatal* on an archive library. Maybe
6555 Linux should just always set usenm=false.
6556 "nonxs_ext"
6558 From Extensions.U:
6559 This variable holds a list of all non-xs extensions built and
6561 installed by the package. By default, all non-xs extensions
6562 distributed will be built, with the exception of platform-specific
6563 extensions (currently only one "VMS" specific extension).
6564 "nroff"
6566 From Loc.U:
6567 This variable is used internally by Configure to determine the full
6569 pathname (if any) of the nroff program. After Configure runs, the
6570 value is reset to a plain "nroff" and is not useful.
6571 "nv_overflows_integers_at"
6573 From perlxv.U:
6574 This variable gives the largest integer value that NVs can hold as
6576 a constant floating point expression. If it could not be
6577 determined, it holds the value 0.
6578 "nv_preserves_uv_bits"
6580 From perlxv.U:
6581 This variable indicates how many of bits type uvtype a variable
6583 nvtype can preserve.
6584 "nveformat"
6586 From perlxvf.U:
6587 This variable contains the format string used for printing a Perl
6589 "NV" using %e-ish floating point format.
6590 "nvEUformat"
6592 From perlxvf.U:
6593 This variable contains the format string used for printing a Perl
6595 "NV" using %E-ish floating point format.
6596 "nvfformat"
6598 From perlxvf.U:
6599 This variable contains the format string used for printing a Perl
6601 "NV" using %f-ish floating point format.
6602 "nvFUformat"
6604 From perlxvf.U:
6605 This variable contains the format string used for printing a Perl
6607 "NV" using %F-ish floating point format.
6608 "nvgformat"
6610 From perlxvf.U:
6611 This variable contains the format string used for printing a Perl
6613 "NV" using %g-ish floating point format.
6614 "nvGUformat"
6616 From perlxvf.U:
6617 This variable contains the format string used for printing a Perl
6619 "NV" using %G-ish floating point format.
6620 "nvmantbits"
6622 From mantbits.U:
6623 This variable tells how many bits the mantissa of a Perl "NV" has,
6625 not including the possible implicit bit.
6626 "nvsize"
6628 From perlxv.U:
6629 This variable is the size of a Perl "NV" in bytes. Note that some
6631 floating point formats have unused bytes.
6632 "nvtype"
6634 From perlxv.U:
6635 This variable contains the C type used for Perl's "NV".
6637 o
6639 "o_nonblock"
6640 From nblock_io.U:
6641 This variable bears the symbol value to be used during open() or
6643 fcntl() to turn on non-blocking I/O for a file descriptor. If you
6644 wish to switch between blocking and non-blocking, you may try
6645 ioctl("FIOSNBIO") instead, but that is only supported by some
6646 devices.
6647 "obj_ext"
6649 From Unix.U:
6650 This is an old synonym for _o.
6652 "old_pthread_create_joinable"
6654 From d_pthrattrj.U:
6655 This variable defines the constant to use for creating joinable
6657 (aka undetached) pthreads. Unused if pthread.h defines
6658 "PTHREAD_CREATE_JOINABLE". If used, possible values are
6659 "PTHREAD_CREATE_UNDETACHED" and "__UNDETACHED".
6660 "optimize"
6662 From ccflags.U:
6663 This variable contains any optimizer/debugger flag that should be
6665 used. It is up to the Makefile to use it.
6666 "orderlib"
6668 From orderlib.U:
6669 This variable is "true" if the components of libraries must be
6671 ordered (with `lorder $* | tsort`) before placing them in an
6672 archive. Set to "false" if ranlib or ar can generate random
6673 libraries.
6674 "osname"
6676 From Oldconfig.U:
6677 This variable contains the operating system name (e.g. sunos,
6679 solaris, hpux, etc.). It can be useful later on for setting
6680 defaults. Any spaces are replaced with underscores. It is set to
6681 a null string if we can't figure it out.
6682 "osvers"
6684 From Oldconfig.U:
6685 This variable contains the operating system version (e.g. 4.1.3,
6687 5.2, etc.). It is primarily used for helping select an appropriate
6688 hints file, but might be useful elsewhere for setting defaults. It
6689 is set to '' if we can't figure it out. We try to be flexible
6690 about how much of the version number to keep, e.g. if 4.1.1, 4.1.2,
6691 and 4.1.3 are essentially the same for this package, hints files
6692 might just be os_4.0 or os_4.1, etc., not keeping separate files
6693 for each little release.
6694 "otherlibdirs"
6696 From otherlibdirs.U:
6697 This variable contains a colon-separated set of paths for the perl
6699 binary to search for additional library files or modules. These
6700 directories will be tacked to the end of @"INC". Perl will
6701 automatically search below each path for version- and architecture-
6702 specific directories. See inc_version_list for more details. A
6703 value of " " means "none" and is used to preserve this value for
6704 the next run through Configure.
6705 p
6707 "package"
6708 From package.U:
6709 This variable contains the name of the package being constructed.
6711 It is primarily intended for the use of later Configure units.
6712 "pager"
6714 From pager.U:
6715 This variable contains the name of the preferred pager on the
6717 system. Usual values are (the full pathnames of) more, less, pg,
6718 or cat.
6719 "passcat"
6721 From nis.U:
6722 This variable contains a command that produces the text of the
6724 /etc/passwd file. This is normally "cat /etc/passwd", but can be
6725 "ypcat passwd" when "NIS" is used. On some systems, such as os390,
6726 there may be no equivalent command, in which case this variable is
6727 unset.
6728 "patchlevel"
6730 From patchlevel.U:
6731 The patchlevel level of this package. The value of patchlevel
6733 comes from the patchlevel.h file. In a version number such as
6734 5.6.1, this is the 6. In patchlevel.h, this is referred to as
6735 "PERL_VERSION".
6736 "path_sep"
6738 From Unix.U:
6739 This is an old synonym for p_ in Head.U, the character used to
6741 separate elements in the command shell search "PATH".
6742 "perl"
6744 From Loc.U:
6745 This variable is used internally by Configure to determine the full
6747 pathname (if any) of the perl program. After Configure runs, the
6748 value is reset to a plain "perl" and is not useful.
6749 "perl5"
6751 From perl5.U:
6752 This variable contains the full path (if any) to a previously
6754 installed perl5.005 or later suitable for running the script to
6755 determine inc_version_list.
6756 P
6758 "PERL_API_REVISION"
6759 From patchlevel.h:
6760 This number describes the earliest compatible "PERL_REVISION" of
6762 Perl ("compatibility" here being defined as sufficient binary/"API"
6763 compatibility to run "XS" code built with the older version).
6764 Normally this does not change across maintenance releases. Please
6765 read the comment in patchlevel.h.
6766 "PERL_API_SUBVERSION"
6768 From patchlevel.h:
6769 This number describes the earliest compatible "PERL_SUBVERSION" of
6771 Perl ("compatibility" here being defined as sufficient binary/"API"
6772 compatibility to run "XS" code built with the older version).
6773 Normally this does not change across maintenance releases. Please
6774 read the comment in patchlevel.h.
6775 "PERL_API_VERSION"
6777 From patchlevel.h:
6778 This number describes the earliest compatible "PERL_VERSION" of
6780 Perl ("compatibility" here being defined as sufficient binary/"API"
6781 compatibility to run "XS" code built with the older version).
6782 Normally this does not change across maintenance releases. Please
6783 read the comment in patchlevel.h.
6784 "PERL_CONFIG_SH"
6786 From Oldsyms.U:
6787 This is set to "true" in config.sh so that a shell script sourcing
6789 config.sh can tell if it has been sourced already.
6790 "PERL_PATCHLEVEL"
6792 From Oldsyms.U:
6793 This symbol reflects the patchlevel, if available. Will usually
6795 come from the .patch file, which is available when the perl source
6796 tree was fetched with rsync.
6797 "perl_patchlevel"
6799 From patchlevel.U:
6800 This is the Perl patch level, a numeric change identifier, as
6802 defined by whichever source code maintenance system is used to
6803 maintain the patches; currently Perforce. It does not correlate
6804 with the Perl version numbers or the maintenance versus development
6805 dichotomy except by also being increasing.
6806 "PERL_REVISION"
6808 From Oldsyms.U:
6809 In a Perl version number such as 5.6.2, this is the 5. This value
6811 is manually set in patchlevel.h
6812 "perl_static_inline"
6814 From d_static_inline.U:
6815 This variable defines the "PERL_STATIC_INLINE" symbol to the best-
6817 guess incantation to use for static inline functions.
6818 Possibilities include static inline (c99) static __inline__
6819 (gcc -ansi) static __inline ("MSVC") static _inline (older
6820 "MSVC") static (c89 compilers)
6821 "PERL_SUBVERSION"
6823 From Oldsyms.U:
6824 In a Perl version number such as 5.6.2, this is the 2. Values
6826 greater than 50 represent potentially unstable development
6827 subversions. This value is manually set in patchlevel.h
6828 "perl_thread_local"
6830 From d_thread_local.U:
6831 This variable gives the value for the "PERL_THREAD_LOCAL" symbol
6833 (when defined), which gives a linkage specification for thread-
6834 local storage.
6835 "PERL_VERSION"
6837 From Oldsyms.U:
6838 In a Perl version number such as 5.6.2, this is the 6. This value
6840 is manually set in patchlevel.h
6841 "perladmin"
6843 From perladmin.U:
6844 Electronic mail address of the perl5 administrator.
6846 "perllibs"
6848 From End.U:
6849 The list of libraries needed by Perl only (any libraries needed by
6851 extensions only will by dropped, if using dynamic loading).
6852 "perlpath"
6854 From perlpath.U:
6855 This variable contains the eventual value of the "PERLPATH" symbol,
6857 which contains the name of the perl interpreter to be used in shell
6858 scripts and in the "eval "exec"" idiom. This variable is not
6859 necessarily the pathname of the file containing the perl
6860 interpreter; you must append the executable extension (_exe) if it
6861 is not already present. Note that Perl code that runs during the
6862 Perl build process cannot reference this variable, as Perl may not
6863 have been installed, or even if installed, may be a different
6864 version of Perl.
6865 "pg"
6867 From Loc.U:
6868 This variable is used internally by Configure to determine the full
6870 pathname (if any) of the pg program. After Configure runs, the
6871 value is reset to a plain "pg" and is not useful.
6872 "phostname"
6874 From myhostname.U:
6875 This variable contains the eventual value of the "PHOSTNAME"
6877 symbol, which is a command that can be fed to popen() to get the
6878 host name. The program should probably not presume that the domain
6879 is or isn't there already.
6880 "pidtype"
6882 From pidtype.U:
6883 This variable defines "PIDTYPE" to be something like pid_t, int,
6885 ushort, or whatever type is used to declare process ids in the
6886 kernel.
6887 "plibpth"
6889 From libpth.U:
6890 Holds the private path used by Configure to find out the libraries.
6892 Its value is prepend to libpth. This variable takes care of special
6893 machines, like the mips. Usually, it should be empty.
6894 "pmake"
6896 From Loc.U:
6897 This variable is defined but not used by Configure. The value is
6899 the empty string and is not useful.
6900 "pr"
6902 From Loc.U:
6903 This variable is defined but not used by Configure. The value is
6905 the empty string and is not useful.
6906 "prefix"
6908 From prefix.U:
6909 This variable holds the name of the directory below which the user
6911 will install the package. Usually, this is /usr/local, and
6912 executables go in /usr/local/bin, library stuff in /usr/local/lib,
6913 man pages in /usr/local/man, etc. It is only used to set defaults
6914 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
6915 "prefixexp"
6917 From prefix.U:
6918 This variable holds the full absolute path of the directory below
6920 which the user will install the package. Derived from prefix.
6921 "privlib"
6923 From privlib.U:
6924 This variable contains the eventual value of the "PRIVLIB" symbol,
6926 which is the name of the private library for this package. It may
6927 have a ~ on the front. It is up to the makefile to eventually
6928 create this directory while performing installation (with ~
6929 substitution).
6930 "privlibexp"
6932 From privlib.U:
6933 This variable is the ~name expanded version of privlib, so that you
6935 may use it directly in Makefiles or shell scripts.
6936 "procselfexe"
6938 From d_procselfexe.U:
6939 If d_procselfexe is defined, $procselfexe is the filename of the
6941 symbolic link pointing to the absolute pathname of the executing
6942 program.
6943 "ptrsize"
6945 From ptrsize.U:
6946 This variable contains the value of the "PTRSIZE" symbol, which
6948 indicates to the C program how many bytes there are in a pointer.
6949 q
6951 "quadkind"
6952 From quadtype.U:
6953 This variable, if defined, encodes the type of a quad: 1 = int, 2 =
6955 long, 3 = long long, 4 = int64_t.
6956 "quadtype"
6958 From quadtype.U:
6959 This variable defines Quad_t to be something like long, int, long
6961 long, int64_t, or whatever type is used for 64-bit integers.
6962 r
6964 "randbits"
6965 From randfunc.U:
6966 Indicates how many bits are produced by the function used to
6968 generate normalized random numbers.
6969 "randfunc"
6971 From randfunc.U:
6972 Indicates the name of the random number function to use. Values
6974 include drand48, random, and rand. In C programs, the "Drand01"
6975 macro is defined to generate uniformly distributed random numbers
6976 over the range [0., 1.[ (see drand01 and nrand).
6977 "random_r_proto"
6979 From d_random_r.U:
6980 This variable encodes the prototype of random_r. It is zero if
6982 d_random_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6983 of reentr.h if d_random_r is defined.
6984 "randseedtype"
6986 From randfunc.U:
6987 Indicates the type of the argument of the seedfunc.
6989 "ranlib"
6991 From orderlib.U:
6992 This variable is set to the pathname of the ranlib program, if it
6994 is needed to generate random libraries. Set to ":" if ar can
6995 generate random libraries or if random libraries are not supported
6996 "rd_nodata"
6998 From nblock_io.U:
6999 This variable holds the return code from read() when no data is
7001 present. It should be -1, but some systems return 0 when "O_NDELAY"
7002 is used, which is a shame because you cannot make the difference
7003 between no data and an EOF.. Sigh!
7004 "readdir64_r_proto"
7006 From d_readdir64_r.U:
7007 This variable encodes the prototype of readdir64_r. It is zero if
7009 d_readdir64_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7010 macros of reentr.h if d_readdir64_r is defined.
7011 "readdir_r_proto"
7013 From d_readdir_r.U:
7014 This variable encodes the prototype of readdir_r. It is zero if
7016 d_readdir_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7017 of reentr.h if d_readdir_r is defined.
7018 "revision"
7020 From patchlevel.U:
7021 The value of revision comes from the patchlevel.h file. In a
7023 version number such as 5.6.1, this is the 5. In patchlevel.h, this
7024 is referred to as "PERL_REVISION".
7025 "rm"
7027 From Loc.U:
7028 This variable is used internally by Configure to determine the full
7030 pathname (if any) of the rm program. After Configure runs, the
7031 value is reset to a plain "rm" and is not useful.
7032 "rm_try"
7034 From Unix.U:
7035 This is a cleanup variable for try test programs. Internal
7037 Configure use only.
7038 "rmail"
7040 From Loc.U:
7041 This variable is defined but not used by Configure. The value is
7043 the empty string and is not useful.
7044 "run"
7046 From Cross.U:
7047 This variable contains the command used by Configure to copy and
7049 execute a cross-compiled executable in the target host. Useful and
7050 available only during Perl build. Empty string '' if not cross-
7051 compiling.
7052 "runnm"
7054 From usenm.U:
7055 This variable contains "true" or "false" depending whether the nm
7057 extraction should be performed or not, according to the value of
7058 usenm and the flags on the Configure command line.
7059 s
7061 "sched_yield"
7062 From d_pthread_y.U:
7063 This variable defines the way to yield the execution of the current
7065 thread.
7066 "scriptdir"
7068 From scriptdir.U:
7069 This variable holds the name of the directory in which the user
7071 wants to put publicly scripts for the package in question. It is
7072 either the same directory as for binaries, or a special one that
7073 can be mounted across different architectures, like /usr/share.
7074 Programs must be prepared to deal with ~name expansion.
7075 "scriptdirexp"
7077 From scriptdir.U:
7078 This variable is the same as scriptdir, but is filename expanded at
7080 configuration time, for programs not wanting to bother with it.
7081 "sed"
7083 From Loc.U:
7084 This variable is used internally by Configure to determine the full
7086 pathname (if any) of the sed program. After Configure runs, the
7087 value is reset to a plain "sed" and is not useful.
7088 "seedfunc"
7090 From randfunc.U:
7091 Indicates the random number generating seed function. Values
7093 include srand48, srandom, and srand.
7094 "selectminbits"
7096 From selectminbits.U:
7097 This variable holds the minimum number of bits operated by select.
7099 That is, if you do select(n, ...), how many bits at least will be
7100 cleared in the masks if some activity is detected. Usually this is
7101 either n or 32*ceil(n/32), especially many little-endians do the
7102 latter. This is only useful if you have select(), naturally.
7103 "selecttype"
7105 From selecttype.U:
7106 This variable holds the type used for the 2nd, 3rd, and 4th
7108 arguments to select. Usually, this is "fd_set *", if "HAS_FD_SET"
7109 is defined, and "int *" otherwise. This is only useful if you have
7110 select(), naturally.
7111 "sendmail"
7113 From Loc.U:
7114 This variable is defined but not used by Configure. The value is
7116 the empty string and is not useful.
7117 "setgrent_r_proto"
7119 From d_setgrent_r.U:
7120 This variable encodes the prototype of setgrent_r. It is zero if
7122 d_setgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7123 macros of reentr.h if d_setgrent_r is defined.
7124 "sethostent_r_proto"
7126 From d_sethostent_r.U:
7127 This variable encodes the prototype of sethostent_r. It is zero if
7129 d_sethostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7130 macros of reentr.h if d_sethostent_r is defined.
7131 "setlocale_r_proto"
7133 From d_setlocale_r.U:
7134 This variable encodes the prototype of setlocale_r. It is zero if
7136 d_setlocale_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7137 macros of reentr.h if d_setlocale_r is defined.
7138 "setnetent_r_proto"
7140 From d_setnetent_r.U:
7141 This variable encodes the prototype of setnetent_r. It is zero if
7143 d_setnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7144 macros of reentr.h if d_setnetent_r is defined.
7145 "setprotoent_r_proto"
7147 From d_setprotoent_r.U:
7148 This variable encodes the prototype of setprotoent_r. It is zero
7150 if d_setprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7151 macros of reentr.h if d_setprotoent_r is defined.
7152 "setpwent_r_proto"
7154 From d_setpwent_r.U:
7155 This variable encodes the prototype of setpwent_r. It is zero if
7157 d_setpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7158 macros of reentr.h if d_setpwent_r is defined.
7159 "setservent_r_proto"
7161 From d_setservent_r.U:
7162 This variable encodes the prototype of setservent_r. It is zero if
7164 d_setservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7165 macros of reentr.h if d_setservent_r is defined.
7166 "sGMTIME_max"
7168 From time_size.U:
7169 This variable defines the maximum value of the time_t offset that
7171 the system function gmtime () accepts
7172 "sGMTIME_min"
7174 From time_size.U:
7175 This variable defines the minimum value of the time_t offset that
7177 the system function gmtime () accepts
7178 "sh"
7180 From sh.U:
7181 This variable contains the full pathname of the shell used on this
7183 system to execute Bourne shell scripts. Usually, this will be
7184 /bin/sh, though it's possible that some systems will have /bin/ksh,
7185 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
7186 D:/bin/sh.exe. This unit comes before Options.U, so you can't set
7187 sh with a "-D" option, though you can override this (and startsh)
7188 with "-O -Dsh=/bin/whatever -Dstartsh=whatever"
7189 "shar"
7191 From Loc.U:
7192 This variable is defined but not used by Configure. The value is
7194 the empty string and is not useful.
7195 "sharpbang"
7197 From spitshell.U:
7198 This variable contains the string #! if this system supports that
7200 construct.
7201 "shmattype"
7203 From d_shmat.U:
7204 This symbol contains the type of pointer returned by shmat(). It
7206 can be "void *" or "char *".
7207 "shortsize"
7209 From intsize.U:
7210 This variable contains the value of the "SHORTSIZE" symbol which
7212 indicates to the C program how many bytes there are in a short.
7213 "shrpenv"
7215 From libperl.U:
7216 If the user builds a shared libperl.so, then we need to tell the
7218 "perl" executable where it will be able to find the installed
7219 libperl.so. One way to do this on some systems is to set the
7220 environment variable "LD_RUN_PATH" to the directory that will be
7221 the final location of the shared libperl.so. The makefile can use
7222 this with something like $shrpenv $("CC") -o perl perlmain.o
7223 $libperl $libs Typical values are shrpenv="env
7224 "LD_RUN_PATH"=$archlibexp/"CORE"" or shrpenv='' See the main perl
7225 Makefile.SH for actual working usage.
7226 Alternatively, we might be able to use a command line option such
7228 as -R $archlibexp/"CORE" (Solaris) or -Wl,-rpath $archlibexp/"CORE"
7229 (Linux).
7230 "shsharp"
7232 From spitshell.U:
7233 This variable tells further Configure units whether your sh can
7235 handle # comments.
7236 "sig_count"
7238 From sig_name.U:
7239 This variable holds a number larger than the largest valid signal
7241 number. This is usually the same as the "NSIG" macro.
7242 "sig_name"
7244 From sig_name.U:
7245 This variable holds the signal names, space separated. The leading
7247 "SIG" in signal name is removed. A "ZERO" is prepended to the
7248 list. This is currently not used, sig_name_init is used instead.
7249 "sig_name_init"
7251 From sig_name.U:
7252 This variable holds the signal names, enclosed in double quotes and
7254 separated by commas, suitable for use in the "SIG_NAME" definition
7255 below. A "ZERO" is prepended to the list, and the list is
7256 terminated with a plain 0. The leading "SIG" in signal names is
7257 removed. See sig_num.
7258 "sig_num"
7260 From sig_name.U:
7261 This variable holds the signal numbers, space separated. A "ZERO"
7263 is prepended to the list (corresponding to the fake "SIGZERO").
7264 Those numbers correspond to the value of the signal listed in the
7265 same place within the sig_name list. This is currently not used,
7266 sig_num_init is used instead.
7267 "sig_num_init"
7269 From sig_name.U:
7270 This variable holds the signal numbers, enclosed in double quotes
7272 and separated by commas, suitable for use in the "SIG_NUM"
7273 definition below. A "ZERO" is prepended to the list, and the list
7274 is terminated with a plain 0.
7275 "sig_size"
7277 From sig_name.U:
7278 This variable contains the number of elements of the sig_name and
7280 sig_num arrays.
7281 "signal_t"
7283 From d_voidsig.U:
7284 This variable holds the type of the signal handler (void or int).
7286 "sitearch"
7288 From sitearch.U:
7289 This variable contains the eventual value of the "SITEARCH" symbol,
7291 which is the name of the private library for this package. It may
7292 have a ~ on the front. It is up to the makefile to eventually
7293 create this directory while performing installation (with ~
7294 substitution). The standard distribution will put nothing in this
7295 directory. After perl has been installed, users may install their
7296 own local architecture-dependent modules in this directory with
7297 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7298 "sitearchexp"
7300 From sitearch.U:
7301 This variable is the ~name expanded version of sitearch, so that
7303 you may use it directly in Makefiles or shell scripts.
7304 "sitebin"
7306 From sitebin.U:
7307 This variable holds the name of the directory in which the user
7309 wants to put add-on publicly executable files for the package in
7310 question. It is most often a local directory such as
7311 /usr/local/bin. Programs using this variable must be prepared to
7312 deal with ~name substitution. The standard distribution will put
7313 nothing in this directory. After perl has been installed, users
7314 may install their own local executables in this directory with
7315 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7316 "sitebinexp"
7318 From sitebin.U:
7319 This is the same as the sitebin variable, but is filename expanded
7321 at configuration time, for use in your makefiles.
7322 "sitehtml1dir"
7324 From sitehtml1dir.U:
7325 This variable contains the name of the directory in which site-
7327 specific html source pages are to be put. It is the responsibility
7328 of the Makefile.SH to get the value of this into the proper
7329 command. You must be prepared to do the ~name expansion yourself.
7330 The standard distribution will put nothing in this directory.
7331 After perl has been installed, users may install their own local
7332 html pages in this directory with MakeMaker Makefile.PL or
7333 equivalent. See "INSTALL" for details.
7334 "sitehtml1direxp"
7336 From sitehtml1dir.U:
7337 This variable is the same as the sitehtml1dir variable, but is
7339 filename expanded at configuration time, for convenient use in
7340 makefiles.
7341 "sitehtml3dir"
7343 From sitehtml3dir.U:
7344 This variable contains the name of the directory in which site-
7346 specific library html source pages are to be put. It is the
7347 responsibility of the Makefile.SH to get the value of this into the
7348 proper command. You must be prepared to do the ~name expansion
7349 yourself. The standard distribution will put nothing in this
7350 directory. After perl has been installed, users may install their
7351 own local library html pages in this directory with MakeMaker
7352 Makefile.PL or equivalent. See "INSTALL" for details.
7353 "sitehtml3direxp"
7355 From sitehtml3dir.U:
7356 This variable is the same as the sitehtml3dir variable, but is
7358 filename expanded at configuration time, for convenient use in
7359 makefiles.
7360 "sitelib"
7362 From sitelib.U:
7363 This variable contains the eventual value of the "SITELIB" symbol,
7365 which is the name of the private library for this package. It may
7366 have a ~ on the front. It is up to the makefile to eventually
7367 create this directory while performing installation (with ~
7368 substitution). The standard distribution will put nothing in this
7369 directory. After perl has been installed, users may install their
7370 own local architecture-independent modules in this directory with
7371 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7372 "sitelib_stem"
7374 From sitelib.U:
7375 This variable is $sitelibexp with any trailing version-specific
7377 component removed. The elements in inc_version_list
7378 (inc_version_list.U) can be tacked onto this variable to generate a
7379 list of directories to search.
7380 "sitelibexp"
7382 From sitelib.U:
7383 This variable is the ~name expanded version of sitelib, so that you
7385 may use it directly in Makefiles or shell scripts.
7386 "siteman1dir"
7388 From siteman1dir.U:
7389 This variable contains the name of the directory in which site-
7391 specific manual source pages are to be put. It is the
7392 responsibility of the Makefile.SH to get the value of this into the
7393 proper command. You must be prepared to do the ~name expansion
7394 yourself. The standard distribution will put nothing in this
7395 directory. After perl has been installed, users may install their
7396 own local man1 pages in this directory with MakeMaker Makefile.PL
7397 or equivalent. See "INSTALL" for details.
7398 "siteman1direxp"
7400 From siteman1dir.U:
7401 This variable is the same as the siteman1dir variable, but is
7403 filename expanded at configuration time, for convenient use in
7404 makefiles.
7405 "siteman3dir"
7407 From siteman3dir.U:
7408 This variable contains the name of the directory in which site-
7410 specific library man source pages are to be put. It is the
7411 responsibility of the Makefile.SH to get the value of this into the
7412 proper command. You must be prepared to do the ~name expansion
7413 yourself. The standard distribution will put nothing in this
7414 directory. After perl has been installed, users may install their
7415 own local man3 pages in this directory with MakeMaker Makefile.PL
7416 or equivalent. See "INSTALL" for details.
7417 "siteman3direxp"
7419 From siteman3dir.U:
7420 This variable is the same as the siteman3dir variable, but is
7422 filename expanded at configuration time, for convenient use in
7423 makefiles.
7424 "siteprefix"
7426 From siteprefix.U:
7427 This variable holds the full absolute path of the directory below
7429 which the user will install add-on packages. See "INSTALL" for
7430 usage and examples.
7431 "siteprefixexp"
7433 From siteprefix.U:
7434 This variable holds the full absolute path of the directory below
7436 which the user will install add-on packages. Derived from
7437 siteprefix.
7438 "sitescript"
7440 From sitescript.U:
7441 This variable holds the name of the directory in which the user
7443 wants to put add-on publicly executable files for the package in
7444 question. It is most often a local directory such as
7445 /usr/local/bin. Programs using this variable must be prepared to
7446 deal with ~name substitution. The standard distribution will put
7447 nothing in this directory. After perl has been installed, users
7448 may install their own local scripts in this directory with
7449 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7450 "sitescriptexp"
7452 From sitescript.U:
7453 This is the same as the sitescript variable, but is filename
7455 expanded at configuration time, for use in your makefiles.
7456 "sizesize"
7458 From sizesize.U:
7459 This variable contains the size of a sizetype in bytes.
7461 "sizetype"
7463 From sizetype.U:
7464 This variable defines sizetype to be something like size_t,
7466 unsigned long, or whatever type is used to declare length
7467 parameters for string functions.
7468 "sleep"
7470 From Loc.U:
7471 This variable is defined but not used by Configure. The value is
7473 the empty string and is not useful.
7474 "sLOCALTIME_max"
7476 From time_size.U:
7477 This variable defines the maximum value of the time_t offset that
7479 the system function localtime () accepts
7480 "sLOCALTIME_min"
7482 From time_size.U:
7483 This variable defines the minimum value of the time_t offset that
7485 the system function localtime () accepts
7486 "smail"
7488 From Loc.U:
7489 This variable is defined but not used by Configure. The value is
7491 the empty string and is not useful.
7492 "so"
7494 From so.U:
7495 This variable holds the extension used to identify shared libraries
7497 (also known as shared objects) on the system. Usually set to "so".
7498 "sockethdr"
7500 From d_socket.U:
7501 This variable has any cpp "-I" flags needed for socket support.
7503 "socketlib"
7505 From d_socket.U:
7506 This variable has the names of any libraries needed for socket
7508 support.
7509 "socksizetype"
7511 From socksizetype.U:
7512 This variable holds the type used for the size argument for various
7514 socket calls like accept. Usual values include socklen_t, size_t,
7515 and int.
7516 "sort"
7518 From Loc.U:
7519 This variable is used internally by Configure to determine the full
7521 pathname (if any) of the sort program. After Configure runs, the
7522 value is reset to a plain "sort" and is not useful.
7523 "spackage"
7525 From package.U:
7526 This variable contains the name of the package being constructed,
7528 with the first letter uppercased, i.e. suitable for starting
7529 sentences.
7530 "spitshell"
7532 From spitshell.U:
7533 This variable contains the command necessary to spit out a runnable
7535 shell on this system. It is either cat or a grep "-v" for #
7536 comments.
7537 "sPRId64"
7539 From quadfio.U:
7540 This variable, if defined, contains the string used by stdio to
7542 format 64-bit decimal numbers (format "d") for output.
7543 "sPRIeldbl"
7545 From longdblfio.U:
7546 This variable, if defined, contains the string used by stdio to
7548 format long doubles (format "e") for output.
7549 "sPRIEUldbl"
7551 From longdblfio.U:
7552 This variable, if defined, contains the string used by stdio to
7554 format long doubles (format "E") for output. The "U" in the name
7555 is to separate this from sPRIeldbl so that even case-blind systems
7556 can see the difference.
7557 "sPRIfldbl"
7559 From longdblfio.U:
7560 This variable, if defined, contains the string used by stdio to
7562 format long doubles (format "f") for output.
7563 "sPRIFUldbl"
7565 From longdblfio.U:
7566 This variable, if defined, contains the string used by stdio to
7568 format long doubles (format "F") for output. The "U" in the name
7569 is to separate this from sPRIfldbl so that even case-blind systems
7570 can see the difference.
7571 "sPRIgldbl"
7573 From longdblfio.U:
7574 This variable, if defined, contains the string used by stdio to
7576 format long doubles (format "g") for output.
7577 "sPRIGUldbl"
7579 From longdblfio.U:
7580 This variable, if defined, contains the string used by stdio to
7582 format long doubles (format "G") for output. The "U" in the name
7583 is to separate this from sPRIgldbl so that even case-blind systems
7584 can see the difference.
7585 "sPRIi64"
7587 From quadfio.U:
7588 This variable, if defined, contains the string used by stdio to
7590 format 64-bit decimal numbers (format "i") for output.
7591 "sPRIo64"
7593 From quadfio.U:
7594 This variable, if defined, contains the string used by stdio to
7596 format 64-bit octal numbers (format "o") for output.
7597 "sPRIu64"
7599 From quadfio.U:
7600 This variable, if defined, contains the string used by stdio to
7602 format 64-bit unsigned decimal numbers (format "u") for output.
7603 "sPRIx64"
7605 From quadfio.U:
7606 This variable, if defined, contains the string used by stdio to
7608 format 64-bit hexadecimal numbers (format "x") for output.
7609 "sPRIXU64"
7611 From quadfio.U:
7612 This variable, if defined, contains the string used by stdio to
7614 format 64-bit hExADECimAl numbers (format "X") for output. The "U"
7615 in the name is to separate this from sPRIx64 so that even case-
7616 blind systems can see the difference.
7617 "srand48_r_proto"
7619 From d_srand48_r.U:
7620 This variable encodes the prototype of srand48_r. It is zero if
7622 d_srand48_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7623 of reentr.h if d_srand48_r is defined.
7624 "srandom_r_proto"
7626 From d_srandom_r.U:
7627 This variable encodes the prototype of srandom_r. It is zero if
7629 d_srandom_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7630 of reentr.h if d_srandom_r is defined.
7631 "src"
7633 From src.U:
7634 This variable holds the (possibly relative) path of the package
7636 source. It is up to the Makefile to use this variable and set
7637 "VPATH" accordingly to find the sources remotely. Use $pkgsrc to
7638 have an absolute path.
7639 "sSCNfldbl"
7641 From longdblfio.U:
7642 This variable, if defined, contains the string used by stdio to
7644 format long doubles (format "f") for input.
7645 "ssizetype"
7647 From ssizetype.U:
7648 This variable defines ssizetype to be something like ssize_t, long
7650 or int. It is used by functions that return a count of bytes or an
7651 error condition. It must be a signed type. We will pick a type
7652 such that sizeof(SSize_t) == sizeof(Size_t).
7653 "st_dev_sign"
7655 From st_dev_def.U:
7656 This variable contains the signedness of struct stat's st_dev. 1
7658 for unsigned, -1 for signed.
7659 "st_dev_size"
7661 From st_dev_def.U:
7662 This variable contains the size of struct stat's st_dev in bytes.
7664 "st_ino_sign"
7666 From st_ino_def.U:
7667 This variable contains the signedness of struct stat's st_ino. 1
7669 for unsigned, -1 for signed.
7670 "st_ino_size"
7672 From st_ino_def.U:
7673 This variable contains the size of struct stat's st_ino in bytes.
7675 "startperl"
7677 From startperl.U:
7678 This variable contains the string to put on the front of a perl
7680 script to make sure (hopefully) that it runs with perl and not some
7681 shell. Of course, that leading line must be followed by the
7682 classical perl idiom: eval 'exec perl -S $0 ${1+$@}' if
7683 $running_under_some_shell; to guarantee perl startup should the
7684 shell execute the script. Note that this magic incantation is not
7685 understood by csh.
7686 "startsh"
7688 From startsh.U:
7689 This variable contains the string to put on the front of a shell
7691 script to make sure (hopefully) that it runs with sh and not some
7692 other shell.
7693 "static_ext"
7695 From Extensions.U:
7696 This variable holds a list of "XS" extension files we want to link
7698 statically into the package. It is used by Makefile.
7699 "stdchar"
7701 From stdchar.U:
7702 This variable conditionally defines "STDCHAR" to be the type of
7704 char used in stdio.h. It has the values "unsigned char" or "char".
7705 "stdio_base"
7707 From d_stdstdio.U:
7708 This variable defines how, given a "FILE" pointer, fp, to access
7710 the _base field (or equivalent) of stdio.h's "FILE" structure.
7711 This will be used to define the macro FILE_base(fp).
7712 "stdio_bufsiz"
7714 From d_stdstdio.U:
7715 This variable defines how, given a "FILE" pointer, fp, to determine
7717 the number of bytes store in the I/O buffer pointer to by the _base
7718 field (or equivalent) of stdio.h's "FILE" structure. This will be
7719 used to define the macro FILE_bufsiz(fp).
7720 "stdio_cnt"
7722 From d_stdstdio.U:
7723 This variable defines how, given a "FILE" pointer, fp, to access
7725 the _cnt field (or equivalent) of stdio.h's "FILE" structure. This
7726 will be used to define the macro FILE_cnt(fp).
7727 "stdio_filbuf"
7729 From d_stdstdio.U:
7730 This variable defines how, given a "FILE" pointer, fp, to tell
7732 stdio to refill its internal buffers (?). This will be used to
7733 define the macro FILE_filbuf(fp).
7734 "stdio_ptr"
7736 From d_stdstdio.U:
7737 This variable defines how, given a "FILE" pointer, fp, to access
7739 the _ptr field (or equivalent) of stdio.h's "FILE" structure. This
7740 will be used to define the macro FILE_ptr(fp).
7741 "stdio_stream_array"
7743 From stdio_streams.U:
7744 This variable tells the name of the array holding the stdio
7746 streams. Usual values include _iob, __iob, and __sF.
7747 "strerror_r_proto"
7749 From d_strerror_r.U:
7750 This variable encodes the prototype of strerror_r. It is zero if
7752 d_strerror_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7753 macros of reentr.h if d_strerror_r is defined.
7754 "submit"
7756 From Loc.U:
7757 This variable is defined but not used by Configure. The value is
7759 the empty string and is not useful.
7760 "subversion"
7762 From patchlevel.U:
7763 The subversion level of this package. The value of subversion
7765 comes from the patchlevel.h file. In a version number such as
7766 5.6.1, this is the 1. In patchlevel.h, this is referred to as
7767 "PERL_SUBVERSION". This is unique to perl.
7768 "sysman"
7770 From sysman.U:
7771 This variable holds the place where the manual is located on this
7773 system. It is not the place where the user wants to put his manual
7774 pages. Rather it is the place where Configure may look to find
7775 manual for unix commands (section 1 of the manual usually). See
7776 mansrc.
7777 "sysroot"
7779 From Sysroot.U:
7780 This variable is empty unless supplied by the Configure user. It
7782 can contain a path to an alternative root directory, under which
7783 headers and libraries for the compilation target can be found. This
7784 is generally used when cross-compiling using a gcc-like compiler.
7785 t
7787 "tail"
7788 From Loc.U:
7789 This variable is defined but not used by Configure. The value is
7791 the empty string and is not useful.
7792 "tar"
7794 From Loc.U:
7795 This variable is defined but not used by Configure. The value is
7797 the empty string and is not useful.
7798 "targetarch"
7800 From Cross.U:
7801 If cross-compiling, this variable contains the target architecture.
7803 If not, this will be empty.
7804 "targetdir"
7806 From Cross.U:
7807 This variable contains a path that will be created on the target
7809 host using targetmkdir, and then used to copy the cross-compiled
7810 executables to. Defaults to /tmp if not set.
7811 "targetenv"
7813 From Cross.U:
7814 If cross-compiling, this variable can be used to modify the
7816 environment on the target system. However, how and where it's
7817 used, and even if it's used at all, is entirely dependent on both
7818 the transport mechanism (targetrun) and what the target system is.
7819 Unless the relevant documentation says otherwise, it is genereally
7820 not useful.
7821 "targethost"
7823 From Cross.U:
7824 This variable contains the name of a separate host machine that can
7826 be used to run compiled test programs and perl tests on. Set to
7827 empty string if not in use.
7828 "targetmkdir"
7830 From Cross.U:
7831 This variable contains the command used by Configure to create a
7833 new directory on the target host.
7834 "targetport"
7836 From Cross.U:
7837 This variable contains the number of a network port to be used to
7839 connect to the host in targethost, if unset defaults to 22 for ssh.
7840 "targetsh"
7842 From sh.U:
7843 If cross-compiling, this variable contains the location of sh on
7845 the target system. If not, this will be the same as $sh.
7846 "tbl"
7848 From Loc.U:
7849 This variable is defined but not used by Configure. The value is
7851 the empty string and is not useful.
7852 "tee"
7854 From Loc.U:
7855 This variable is defined but not used by Configure. The value is
7857 the empty string and is not useful.
7858 "test"
7860 From Loc.U:
7861 This variable is used internally by Configure to determine the full
7863 pathname (if any) of the test program. After Configure runs, the
7864 value is reset to a plain "test" and is not useful.
7865 "timeincl"
7867 From i_time.U:
7868 This variable holds the full path of the included time header(s).
7870 "timetype"
7872 From d_time.U:
7873 This variable holds the type returned by time(). It can be long, or
7875 time_t on "BSD" sites (in which case <sys/types.h> should be
7876 included). Anyway, the type Time_t should be used.
7877 "tmpnam_r_proto"
7879 From d_tmpnam_r.U:
7880 This variable encodes the prototype of tmpnam_r. It is zero if
7882 d_tmpnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7883 of reentr.h if d_tmpnam_r is defined.
7884 "to"
7886 From Cross.U:
7887 This variable contains the command used by Configure to copy to
7889 from the target host. Useful and available only during Perl build.
7890 The string ":" if not cross-compiling.
7891 "touch"
7893 From Loc.U:
7894 This variable is used internally by Configure to determine the full
7896 pathname (if any) of the touch program. After Configure runs, the
7897 value is reset to a plain "touch" and is not useful.
7898 "tr"
7900 From Loc.U:
7901 This variable is used internally by Configure to determine the full
7903 pathname (if any) of the tr program. After Configure runs, the
7904 value is reset to a plain "tr" and is not useful.
7905 "trnl"
7907 From trnl.U:
7908 This variable contains the value to be passed to the tr(1) command
7910 to transliterate a newline. Typical values are "\012" and "\n".
7911 This is needed for "EBCDIC" systems where newline is not
7912 necessarily "\012".
7913 "troff"
7915 From Loc.U:
7916 This variable is defined but not used by Configure. The value is
7918 the empty string and is not useful.
7919 "ttyname_r_proto"
7921 From d_ttyname_r.U:
7922 This variable encodes the prototype of ttyname_r. It is zero if
7924 d_ttyname_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7925 of reentr.h if d_ttyname_r is defined.
7926 u
7928 "u16size"
7929 From perlxv.U:
7930 This variable is the size of an U16 in bytes.
7932 "u16type"
7934 From perlxv.U:
7935 This variable contains the C type used for Perl's U16.
7937 "u32size"
7939 From perlxv.U:
7940 This variable is the size of an U32 in bytes.
7942 "u32type"
7944 From perlxv.U:
7945 This variable contains the C type used for Perl's U32.
7947 "u64size"
7949 From perlxv.U:
7950 This variable is the size of an U64 in bytes.
7952 "u64type"
7954 From perlxv.U:
7955 This variable contains the C type used for Perl's U64.
7957 "u8size"
7959 From perlxv.U:
7960 This variable is the size of an U8 in bytes.
7962 "u8type"
7964 From perlxv.U:
7965 This variable contains the C type used for Perl's U8.
7967 "uidformat"
7969 From uidf.U:
7970 This variable contains the format string used for printing a Uid_t.
7972 "uidsign"
7974 From uidsign.U:
7975 This variable contains the signedness of a uidtype. 1 for
7977 unsigned, -1 for signed.
7978 "uidsize"
7980 From uidsize.U:
7981 This variable contains the size of a uidtype in bytes.
7983 "uidtype"
7985 From uidtype.U:
7986 This variable defines Uid_t to be something like uid_t, int,
7988 ushort, or whatever type is used to declare user ids in the kernel.
7989 "uname"
7991 From Loc.U:
7992 This variable is used internally by Configure to determine the full
7994 pathname (if any) of the uname program. After Configure runs, the
7995 value is reset to a plain "uname" and is not useful.
7996 "uniq"
7998 From Loc.U:
7999 This variable is used internally by Configure to determine the full
8001 pathname (if any) of the uniq program. After Configure runs, the
8002 value is reset to a plain "uniq" and is not useful.
8003 "uquadtype"
8005 From quadtype.U:
8006 This variable defines Uquad_t to be something like unsigned long,
8008 unsigned int, unsigned long long, uint64_t, or whatever type is
8009 used for 64-bit integers.
8010 "use64bitall"
8012 From use64bits.U:
8013 This variable conditionally defines the USE_64_BIT_ALL symbol, and
8015 indicates that 64-bit integer types should be used when available.
8016 The maximal possible 64-bitness is employed: LP64 or ILP64, meaning
8017 that you will be able to use more than 2 gigabytes of memory. This
8018 mode is even more binary incompatible than USE_64_BIT_INT. You may
8019 not be able to run the resulting executable in a 32-bit "CPU" at
8020 all or you may need at least to reboot your "OS" to 64-bit mode.
8021 "use64bitint"
8023 From use64bits.U:
8024 This variable conditionally defines the USE_64_BIT_INT symbol, and
8026 indicates that 64-bit integer types should be used when available.
8027 The minimal possible 64-bitness is employed, just enough to get
8028 64-bit integers into Perl. This may mean using for example "long
8029 longs", while your memory may still be limited to 2 gigabytes.
8030 "usecbacktrace"
8032 From usebacktrace.U:
8033 This variable indicates whether we are compiling with backtrace
8035 support.
8036 "usecrosscompile"
8038 From Cross.U:
8039 This variable conditionally defines the "USE_CROSS_COMPILE" symbol,
8041 and indicates that Perl has been cross-compiled.
8042 "usedefaultstrict"
8044 From usedefaultstrict.U:
8045 This setting provides a mechanism for perl developers to enable
8047 strict by default. These defaults do not apply when perl is run via
8048 -e or -E.
8049 "usedevel"
8051 From Devel.U:
8052 This variable indicates that Perl was configured with development
8054 features enabled. This should not be done for production builds.
8055 "usedl"
8057 From dlsrc.U:
8058 This variable indicates if the system supports dynamic loading of
8060 some sort. See also dlsrc and dlobj.
8061 "usedtrace"
8063 From usedtrace.U:
8064 This variable indicates whether we are compiling with dtrace
8066 support. See also dtrace.
8067 "usefaststdio"
8069 From usefaststdio.U:
8070 This variable conditionally defines the "USE_FAST_STDIO" symbol,
8072 and indicates that Perl should be built to use "fast stdio".
8073 Defaults to define in Perls 5.8 and earlier, to undef later.
8074 "useithreads"
8076 From usethreads.U:
8077 This variable conditionally defines the "USE_ITHREADS" symbol, and
8079 indicates that Perl should be built to use the interpreter-based
8080 threading implementation.
8081 "usekernprocpathname"
8083 From usekernprocpathname.U:
8084 This variable, indicates that we can use sysctl with
8086 "KERN_PROC_PATHNAME" to get a full path for the executable, and
8087 hence convert $^X to an absolute path.
8088 "uselanginfo"
8090 From Extensions.U:
8091 This variable holds either "true" or "false" to indicate whether
8093 the I18N::Langinfo extension should be used. The sole use for this
8094 currently is to allow an easy mechanism for users to skip this
8095 extension from the Configure command line.
8096 "uselargefiles"
8098 From uselfs.U:
8099 This variable conditionally defines the "USE_LARGE_FILES" symbol,
8101 and indicates that large file interfaces should be used when
8102 available.
8103 "uselongdouble"
8105 From uselongdbl.U:
8106 This variable conditionally defines the "USE_LONG_DOUBLE" symbol,
8108 and indicates that long doubles should be used when available.
8109 "usemallocwrap"
8111 From mallocsrc.U:
8112 This variable contains y if we are wrapping malloc to prevent
8114 integer overflow during size calculations.
8115 "usemorebits"
8117 From usemorebits.U:
8118 This variable conditionally defines the "USE_MORE_BITS" symbol, and
8120 indicates that explicit 64-bit interfaces and long doubles should
8121 be used when available.
8122 "usemultiplicity"
8124 From usemultiplicity.U:
8125 This variable conditionally defines the "MULTIPLICITY" symbol, and
8127 indicates that Perl should be built to use multiplicity.
8128 "usemymalloc"
8130 From mallocsrc.U:
8131 This variable contains y if the malloc that comes with this package
8133 is desired over the system's version of malloc. People often
8134 include special versions of malloc for efficiency, but such
8135 versions are often less portable. See also mallocsrc and
8136 mallocobj. If this is "y", then -lmalloc is removed from $libs.
8137 "usenm"
8139 From usenm.U:
8140 This variable contains "true" or "false" depending whether the nm
8142 extraction is wanted or not.
8143 "usensgetexecutablepath"
8145 From usensgetexecutablepath.U:
8146 This symbol, if defined, indicates that we can use
8148 _NSGetExecutablePath and realpath to get a full path for the
8149 executable, and hence convert $^X to an absolute path.
8150 "useopcode"
8152 From Extensions.U:
8153 This variable holds either "true" or "false" to indicate whether
8155 the Opcode extension should be used. The sole use for this
8156 currently is to allow an easy mechanism for users to skip the
8157 Opcode extension from the Configure command line.
8158 "useperlio"
8160 From useperlio.U:
8161 This variable conditionally defines the "USE_PERLIO" symbol, and
8163 indicates that the PerlIO abstraction should be used throughout.
8164 "useposix"
8166 From Extensions.U:
8167 This variable holds either "true" or "false" to indicate whether
8169 the "POSIX" extension should be used. The sole use for this
8170 currently is to allow an easy mechanism for hints files to indicate
8171 that "POSIX" will not compile on a particular system.
8172 "usequadmath"
8174 From usequadmath.U:
8175 This variable conditionally defines the "USE_QUADMATH" symbol, and
8177 indicates that the quadmath library __float128 long doubles should
8178 be used when available.
8179 "usereentrant"
8181 From usethreads.U:
8182 This variable conditionally defines the "USE_REENTRANT_API" symbol,
8184 which indicates that the thread code may try to use the various _r
8185 versions of library functions. This is only potentially meaningful
8186 if usethreads is set and is very experimental, it is not even
8187 prompted for.
8188 "userelocatableinc"
8190 From bin.U:
8191 This variable is set to true to indicate that perl should relocate
8193 @"INC" entries at runtime based on the path to the perl binary.
8194 Any @"INC" paths starting .../ are relocated relative to the
8195 directory containing the perl binary, and a logical cleanup of the
8196 path is then made around the join point (removing dir/../ pairs)
8197 "useshrplib"
8199 From libperl.U:
8200 This variable is set to "true" if the user wishes to build a shared
8202 libperl, and "false" otherwise.
8203 "usesitecustomize"
8205 From d_sitecustomize.U:
8206 This variable is set to true when the user requires a mechanism
8208 that allows the sysadmin to add entries to @"INC" at runtime. This
8209 variable being set, makes perl run $sitelib/sitecustomize.pl at
8210 startup.
8211 "usesocks"
8213 From usesocks.U:
8214 This variable conditionally defines the "USE_SOCKS" symbol, and
8216 indicates that Perl should be built to use "SOCKS".
8217 "usethreads"
8219 From usethreads.U:
8220 This variable conditionally defines the "USE_THREADS" symbol, and
8222 indicates that Perl should be built to use threads.
8223 "usevendorprefix"
8225 From vendorprefix.U:
8226 This variable tells whether the vendorprefix and consequently other
8228 vendor* paths are in use.
8229 "useversionedarchname"
8231 From archname.U:
8232 This variable indicates whether to include the $api_versionstring
8234 as a component of the $archname.
8235 "usevfork"
8237 From d_vfork.U:
8238 This variable is set to true when the user accepts to use vfork.
8240 It is set to false when no vfork is available or when the user
8241 explicitly requests not to use vfork.
8242 "usrinc"
8244 From usrinc.U:
8245 This variable holds the path of the include files, which is usually
8247 /usr/include. It is mainly used by other Configure units.
8248 "uuname"
8250 From Loc.U:
8251 This variable is defined but not used by Configure. The value is
8253 the empty string and is not useful.
8254 "uvoformat"
8256 From perlxvf.U:
8257 This variable contains the format string used for printing a Perl
8259 "UV" as an unsigned octal integer.
8260 "uvsize"
8262 From perlxv.U:
8263 This variable is the size of a "UV" in bytes.
8265 "uvtype"
8267 From perlxv.U:
8268 This variable contains the C type used for Perl's "UV".
8270 "uvuformat"
8272 From perlxvf.U:
8273 This variable contains the format string used for printing a Perl
8275 "UV" as an unsigned decimal integer.
8276 "uvxformat"
8278 From perlxvf.U:
8279 This variable contains the format string used for printing a Perl
8281 "UV" as an unsigned hexadecimal integer in lowercase abcdef.
8282 "uvXUformat"
8284 From perlxvf.U:
8285 This variable contains the format string used for printing a Perl
8287 "UV" as an unsigned hexadecimal integer in uppercase "ABCDEF".
8288 v
8290 "vendorarch"
8291 From vendorarch.U:
8292 This variable contains the value of the "PERL_VENDORARCH" symbol.
8294 It may have a ~ on the front. The standard distribution will put
8295 nothing in this directory. Vendors who distribute perl may wish to
8296 place their own architecture-dependent modules and extensions in
8297 this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or
8298 equivalent. See "INSTALL" for details.
8299 "vendorarchexp"
8301 From vendorarch.U:
8302 This variable is the ~name expanded version of vendorarch, so that
8304 you may use it directly in Makefiles or shell scripts.
8305 "vendorbin"
8307 From vendorbin.U:
8308 This variable contains the eventual value of the "VENDORBIN"
8310 symbol. It may have a ~ on the front. The standard distribution
8311 will put nothing in this directory. Vendors who distribute perl
8312 may wish to place additional binaries in this directory with
8313 MakeMaker Makefile.PL "INSTALLDIRS"=vendor or equivalent. See
8314 "INSTALL" for details.
8315 "vendorbinexp"
8317 From vendorbin.U:
8318 This variable is the ~name expanded version of vendorbin, so that
8320 you may use it directly in Makefiles or shell scripts.
8321 "vendorhtml1dir"
8323 From vendorhtml1dir.U:
8324 This variable contains the name of the directory for html pages.
8326 It may have a ~ on the front. The standard distribution will put
8327 nothing in this directory. Vendors who distribute perl may wish to
8328 place their own html pages in this directory with MakeMaker
8329 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
8330 details.
8331 "vendorhtml1direxp"
8333 From vendorhtml1dir.U:
8334 This variable is the ~name expanded version of vendorhtml1dir, so
8336 that you may use it directly in Makefiles or shell scripts.
8337 "vendorhtml3dir"
8339 From vendorhtml3dir.U:
8340 This variable contains the name of the directory for html library
8342 pages. It may have a ~ on the front. The standard distribution
8343 will put nothing in this directory. Vendors who distribute perl
8344 may wish to place their own html pages for modules and extensions
8345 in this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor
8346 or equivalent. See "INSTALL" for details.
8347 "vendorhtml3direxp"
8349 From vendorhtml3dir.U:
8350 This variable is the ~name expanded version of vendorhtml3dir, so
8352 that you may use it directly in Makefiles or shell scripts.
8353 "vendorlib"
8355 From vendorlib.U:
8356 This variable contains the eventual value of the "VENDORLIB"
8358 symbol, which is the name of the private library for this package.
8359 The standard distribution will put nothing in this directory.
8360 Vendors who distribute perl may wish to place their own modules in
8361 this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or
8362 equivalent. See "INSTALL" for details.
8363 "vendorlib_stem"
8365 From vendorlib.U:
8366 This variable is $vendorlibexp with any trailing version-specific
8368 component removed. The elements in inc_version_list
8369 (inc_version_list.U) can be tacked onto this variable to generate a
8370 list of directories to search.
8371 "vendorlibexp"
8373 From vendorlib.U:
8374 This variable is the ~name expanded version of vendorlib, so that
8376 you may use it directly in Makefiles or shell scripts.
8377 "vendorman1dir"
8379 From vendorman1dir.U:
8380 This variable contains the name of the directory for man1 pages.
8382 It may have a ~ on the front. The standard distribution will put
8383 nothing in this directory. Vendors who distribute perl may wish to
8384 place their own man1 pages in this directory with MakeMaker
8385 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
8386 details.
8387 "vendorman1direxp"
8389 From vendorman1dir.U:
8390 This variable is the ~name expanded version of vendorman1dir, so
8392 that you may use it directly in Makefiles or shell scripts.
8393 "vendorman3dir"
8395 From vendorman3dir.U:
8396 This variable contains the name of the directory for man3 pages.
8398 It may have a ~ on the front. The standard distribution will put
8399 nothing in this directory. Vendors who distribute perl may wish to
8400 place their own man3 pages in this directory with MakeMaker
8401 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
8402 details.
8403 "vendorman3direxp"
8405 From vendorman3dir.U:
8406 This variable is the ~name expanded version of vendorman3dir, so
8408 that you may use it directly in Makefiles or shell scripts.
8409 "vendorprefix"
8411 From vendorprefix.U:
8412 This variable holds the full absolute path of the directory below
8414 which the vendor will install add-on packages. See "INSTALL" for
8415 usage and examples.
8416 "vendorprefixexp"
8418 From vendorprefix.U:
8419 This variable holds the full absolute path of the directory below
8421 which the vendor will install add-on packages. Derived from
8422 vendorprefix.
8423 "vendorscript"
8425 From vendorscript.U:
8426 This variable contains the eventual value of the "VENDORSCRIPT"
8428 symbol. It may have a ~ on the front. The standard distribution
8429 will put nothing in this directory. Vendors who distribute perl
8430 may wish to place additional executable scripts in this directory
8431 with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or equivalent. See
8432 "INSTALL" for details.
8433 "vendorscriptexp"
8435 From vendorscript.U:
8436 This variable is the ~name expanded version of vendorscript, so
8438 that you may use it directly in Makefiles or shell scripts.
8439 "version"
8441 From patchlevel.U:
8442 The full version number of this package, such as 5.6.1 (or 5_6_1).
8444 This combines revision, patchlevel, and subversion to get the full
8445 version number, including any possible subversions. This is
8446 suitable for use as a directory name, and hence is filesystem
8447 dependent.
8448 "version_patchlevel_string"
8450 From patchlevel.U:
8451 This is a string combining version, subversion and perl_patchlevel
8453 (if perl_patchlevel is non-zero). It is typically something like
8454 'version 7 subversion 1' or 'version 7 subversion 1 patchlevel
8455 11224' It is computed here to avoid duplication of code in
8456 myconfig.SH and lib/Config.pm.
8457 "versiononly"
8459 From versiononly.U:
8460 If set, this symbol indicates that only the version-specific
8462 components of a perl installation should be installed. This may be
8463 useful for making a test installation of a new version without
8464 disturbing the existing installation. Setting versiononly is
8465 equivalent to setting installperl's -v option. In particular, the
8466 non-versioned scripts and programs such as a2p, c2ph, h2xs, pod2*,
8467 and perldoc are not installed (see "INSTALL" for a more complete
8468 list). Nor are the man pages installed. Usually, this is undef.
8469 "vi"
8471 From Loc.U:
8472 This variable is defined but not used by Configure. The value is
8474 the empty string and is not useful.
8475 x
8477 "xlibpth"
8478 From libpth.U:
8479 This variable holds extra path (space-separated) used to find
8481 libraries on this platform, for example "CPU"-specific libraries
8482 (on multi-"CPU" platforms) may be listed here.
8483 "xlocale_needed"
8485 From d_newlocale.U:
8486 This symbol, if defined, indicates that the C program should
8488 include <xlocale.h> to get newlocale() and its friends.
8489 y
8491 "yacc"
8492 From yacc.U:
8493 This variable holds the name of the compiler compiler we want to
8495 use in the Makefile. It can be yacc, byacc, or bison -y.
8496 "yaccflags"
8498 From yacc.U:
8499 This variable contains any additional yacc flags desired by the
8501 user. It is up to the Makefile to use this.
8502 z
8504 "zcat"
8505 From Loc.U:
8506 This variable is defined but not used by Configure. The value is
8508 the empty string and is not useful.
8509 "zip"
8511 From Loc.U:
8512 This variable is used internally by Configure to determine the full
8514 pathname (if any) of the zip program. After Configure runs, the
8515 value is reset to a plain "zip" and is not useful.
8516
8518 Information on the git commit from which the current perl binary was
8519 compiled can be found in the variable $Config::Git_Data. The variable
8520 is a structured string that looks something like this:
8521 git_commit_id='ea0c2dbd5f5ac6845ecc7ec6696415bf8e27bd52'
8523 git_describe='GitLive-blead-1076-gea0c2db'
8524 git_branch='smartmatch'
8525 git_uncommitted_changes=''
8526 git_commit_id_title='Commit id:'
8527 git_commit_date='2009-05-09 17:47:31 +0200'
8528 Its format is not guaranteed not to change over time.
8530
8532 This module contains a good example of how to use tie to implement a
8533 cache and an example of how to make a tied variable readonly to those
8534 outside of it.
8535perl v5.36.0 2022-08-30 Config(3pm)