1Config(3pm) Perl Programmers Reference Guide Config(3pm)
2
6 Config - access Perl configuration information
7
9 use Config;
10 if ($Config{usethreads}) {
11 print "has thread support\n"
12 }
13 use Config qw(myconfig config_sh config_vars config_re);
15 print myconfig();
17 print config_sh();
19 print config_re();
21 config_vars(qw(osname archname));
23
25 The Config module contains all the information that was available to
26 the "Configure" program at Perl build time (over 900 values).
27 Shell variables from the config.sh file (written by Configure) are
29 stored in the readonly-variable %Config, indexed by their names.
30 Values stored in config.sh as 'undef' are returned as undefined values.
32 The perl "exists" function can be used to check if a named variable
33 exists.
34 For a description of the variables, please have a look at the Glossary
36 file, as written in the Porting folder, or use the url:
37 http://perl5.git.perl.org/perl.git/blob/HEAD:/Porting/Glossary
38 myconfig()
40 Returns a textual summary of the major perl configuration values.
41 See also "-V" in "Command Switches" in perlrun.
42 config_sh()
44 Returns the entire perl configuration information in the form of
45 the original config.sh shell variable assignment script.
46 config_re($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 "compress"
497 From Loc.U:
498 This variable is defined but not used by Configure. The value is
500 the empty string and is not useful.
501 "config_arg0"
503 From Options.U:
504 This variable contains the string used to invoke the Configure
506 command, as reported by the shell in the $0 variable.
507 "config_argc"
509 From Options.U:
510 This variable contains the number of command-line arguments passed
512 to Configure, as reported by the shell in the $# variable. The
513 individual arguments are stored as variables config_arg1,
514 config_arg2, etc.
515 "config_args"
517 From Options.U:
518 This variable contains a single string giving the command-line
520 arguments passed to Configure. Spaces within arguments, quotes, and
521 escaped characters are not correctly preserved. To reconstruct the
522 command line, you must assemble the individual command line pieces,
523 given in config_arg[0-9]*.
524 "contains"
526 From contains.U:
527 This variable holds the command to do a grep with a proper return
529 status. On most sane systems it is simply "grep". On insane
530 systems it is a grep followed by a cat followed by a test. This
531 variable is primarily for the use of other Configure units.
532 "cp"
534 From Loc.U:
535 This variable is used internally by Configure to determine the full
537 pathname (if any) of the cp program. After Configure runs, the
538 value is reset to a plain "cp" and is not useful.
539 "cpio"
541 From Loc.U:
542 This variable is defined but not used by Configure. The value is
544 the empty string and is not useful.
545 "cpp"
547 From Loc.U:
548 This variable is used internally by Configure to determine the full
550 pathname (if any) of the cpp program. After Configure runs, the
551 value is reset to a plain "cpp" and is not useful.
552 "cpp_stuff"
554 From cpp_stuff.U:
555 This variable contains an identification of the concatenation
557 mechanism used by the C preprocessor.
558 "cppccsymbols"
560 From Cppsym.U:
561 The variable contains the symbols defined by the C compiler when it
563 calls cpp. The symbols defined by the cc alone or cpp alone are
564 not in this list, see ccsymbols and cppsymbols. The list is a
565 space-separated list of symbol=value tokens.
566 "cppflags"
568 From ccflags.U:
569 This variable holds the flags that will be passed to the C pre-
571 processor. It is up to the Makefile to use it.
572 "cpplast"
574 From cppstdin.U:
575 This variable has the same functionality as cppminus, only it
577 applies to cpprun and not cppstdin.
578 "cppminus"
580 From cppstdin.U:
581 This variable contains the second part of the string which will
583 invoke the C preprocessor on the standard input and produce to
584 standard output. This variable will have the value "-" if cppstdin
585 needs a minus to specify standard input, otherwise the value is "".
586 "cpprun"
588 From cppstdin.U:
589 This variable contains the command which will invoke a C
591 preprocessor on standard input and put the output to stdout. It is
592 guaranteed not to be a wrapper and may be a null string if no
593 preprocessor can be made directly available. This preprocessor
594 might be different from the one used by the C compiler. Don't
595 forget to append cpplast after the preprocessor options.
596 "cppstdin"
598 From cppstdin.U:
599 This variable contains the command which will invoke the C
601 preprocessor on standard input and put the output to stdout. It is
602 primarily used by other Configure units that ask about preprocessor
603 symbols.
604 "cppsymbols"
606 From Cppsym.U:
607 The variable contains the symbols defined by the C preprocessor
609 alone. The symbols defined by cc or by cc when it calls cpp are
610 not in this list, see ccsymbols and cppccsymbols. The list is a
611 space-separated list of symbol=value tokens.
612 "crypt_r_proto"
614 From d_crypt_r.U:
615 This variable encodes the prototype of crypt_r. It is zero if
617 d_crypt_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
618 of reentr.h if d_crypt_r is defined.
619 "cryptlib"
621 From d_crypt.U:
622 This variable holds -lcrypt or the path to a libcrypt.a archive if
624 the crypt() function is not defined in the standard C library. It
625 is up to the Makefile to use this.
626 "csh"
628 From Loc.U:
629 This variable is used internally by Configure to determine the full
631 pathname (if any) of the csh program. After Configure runs, the
632 value is reset to a plain "csh" and is not useful.
633 "ctermid_r_proto"
635 From d_ctermid_r.U:
636 This variable encodes the prototype of ctermid_r. It is zero if
638 d_ctermid_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
639 of reentr.h if d_ctermid_r is defined.
640 "ctime_r_proto"
642 From d_ctime_r.U:
643 This variable encodes the prototype of ctime_r. It is zero if
645 d_ctime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
646 of reentr.h if d_ctime_r is defined.
647 d
649 "d__fwalk"
650 From d__fwalk.U:
651 This variable conditionally defines "HAS__FWALK" if _fwalk() is
653 available to apply a function to all the file handles.
654 "d_accept4"
656 From d_accept4.U:
657 This variable conditionally defines HAS_ACCEPT4 if accept4() is
659 available to accept socket connections.
660 "d_access"
662 From d_access.U:
663 This variable conditionally defines "HAS_ACCESS" if the access()
665 system call is available to check for access permissions using real
666 IDs.
667 "d_accessx"
669 From d_accessx.U:
670 This variable conditionally defines the "HAS_ACCESSX" symbol, which
672 indicates to the C program that the accessx() routine is available.
673 "d_acosh"
675 From d_acosh.U:
676 This variable conditionally defines the "HAS_ACOSH" symbol, which
678 indicates to the C program that the acosh() routine is available.
679 "d_aintl"
681 From d_aintl.U:
682 This variable conditionally defines the "HAS_AINTL" symbol, which
684 indicates to the C program that the aintl() routine is available.
685 If copysignl is also present we can emulate modfl.
686 "d_alarm"
688 From d_alarm.U:
689 This variable conditionally defines the "HAS_ALARM" symbol, which
691 indicates to the C program that the alarm() routine is available.
692 "d_archlib"
694 From archlib.U:
695 This variable conditionally defines "ARCHLIB" to hold the pathname
697 of architecture-dependent library files for $package. If $archlib
698 is the same as $privlib, then this is set to undef.
699 "d_asctime64"
701 From d_timefuncs64.U:
702 This variable conditionally defines the HAS_ASCTIME64 symbol, which
704 indicates to the C program that the asctime64 () routine is
705 available.
706 "d_asctime_r"
708 From d_asctime_r.U:
709 This variable conditionally defines the "HAS_ASCTIME_R" symbol,
711 which indicates to the C program that the asctime_r() routine is
712 available.
713 "d_asinh"
715 From d_asinh.U:
716 This variable conditionally defines the "HAS_ASINH" symbol, which
718 indicates to the C program that the asinh() routine is available.
719 "d_atanh"
721 From d_atanh.U:
722 This variable conditionally defines the "HAS_ATANH" symbol, which
724 indicates to the C program that the atanh() routine is available.
725 "d_atolf"
727 From atolf.U:
728 This variable conditionally defines the "HAS_ATOLF" symbol, which
730 indicates to the C program that the atolf() routine is available.
731 "d_atoll"
733 From atoll.U:
734 This variable conditionally defines the "HAS_ATOLL" symbol, which
736 indicates to the C program that the atoll() routine is available.
737 "d_attribute_deprecated"
739 From d_attribut.U:
740 This variable conditionally defines "HASATTRIBUTE_DEPRECATED",
742 which indicates that "GCC" can handle the attribute for marking
743 deprecated APIs
744 "d_attribute_format"
746 From d_attribut.U:
747 This variable conditionally defines "HASATTRIBUTE_FORMAT", which
749 indicates the C compiler can check for printf-like formats.
750 "d_attribute_malloc"
752 From d_attribut.U:
753 This variable conditionally defines "HASATTRIBUTE_MALLOC", which
755 indicates the C compiler can understand functions as having malloc-
756 like semantics.
757 "d_attribute_nonnull"
759 From d_attribut.U:
760 This variable conditionally defines "HASATTRIBUTE_NONNULL", which
762 indicates that the C compiler can know that certain arguments must
763 not be "NULL", and will check accordingly at compile time.
764 "d_attribute_noreturn"
766 From d_attribut.U:
767 This variable conditionally defines "HASATTRIBUTE_NORETURN", which
769 indicates that the C compiler can know that certain functions are
770 guaranteed never to return.
771 "d_attribute_pure"
773 From d_attribut.U:
774 This variable conditionally defines "HASATTRIBUTE_PURE", which
776 indicates that the C compiler can know that certain functions are
777 "pure" functions, meaning that they have no side effects, and only
778 rely on function input and/or global data for their results.
779 "d_attribute_unused"
781 From d_attribut.U:
782 This variable conditionally defines "HASATTRIBUTE_UNUSED", which
784 indicates that the C compiler can know that certain variables and
785 arguments may not always be used, and to not throw warnings if they
786 don't get used.
787 "d_attribute_warn_unused_result"
789 From d_attribut.U:
790 This variable conditionally defines
792 "HASATTRIBUTE_WARN_UNUSED_RESULT", which indicates that the C
793 compiler can know that certain functions have a return values that
794 must not be ignored, such as malloc() or open().
795 "d_backtrace"
797 From d_backtrace.U:
798 This variable conditionally defines the "HAS_BACKTRACE" symbol,
800 which indicates to the C program that the backtrace() routine is
801 available to get a stack trace.
802 "d_bsd"
804 From Guess.U:
805 This symbol conditionally defines the symbol "BSD" when running on
807 a "BSD" system.
808 "d_bsdgetpgrp"
810 From d_getpgrp.U:
811 This variable conditionally defines "USE_BSD_GETPGRP" if getpgrp
813 needs one arguments whereas "USG" one needs none.
814 "d_bsdsetpgrp"
816 From d_setpgrp.U:
817 This variable conditionally defines "USE_BSD_SETPGRP" if setpgrp
819 needs two arguments whereas "USG" one needs none. See also
820 d_setpgid for a "POSIX" interface.
821 "d_builtin_add_overflow"
823 From d_builtin_overflow.U:
824 This variable conditionally defines "HAS_BUILTIN_ADD_OVERFLOW",
826 which indicates that the compiler supports
827 __builtin_add_overflow(x,y,&z) for safely adding x and y into z
828 while checking for overflow.
829 "d_builtin_choose_expr"
831 From d_builtin.U:
832 This conditionally defines "HAS_BUILTIN_CHOOSE_EXPR", which
834 indicates that the compiler supports __builtin_choose_expr(x,y,z).
835 This built-in function is analogous to the "x?y:z" operator in C,
836 except that the expression returned has its type unaltered by
837 promotion rules. Also, the built-in function does not evaluate the
838 expression that was not chosen.
839 "d_builtin_expect"
841 From d_builtin.U:
842 This conditionally defines "HAS_BUILTIN_EXPECT", which indicates
844 that the compiler supports __builtin_expect(exp,c). You may use
845 __builtin_expect to provide the compiler with branch prediction
846 information.
847 "d_builtin_mul_overflow"
849 From d_builtin_overflow.U:
850 This variable conditionally defines "HAS_BUILTIN_MUL_OVERFLOW",
852 which indicates that the compiler supports
853 __builtin_mul_overflow(x,y,&z) for safely multiplying x and y into
854 z while checking for overflow.
855 "d_builtin_sub_overflow"
857 From d_builtin_overflow.U:
858 This variable conditionally defines "HAS_BUILTIN_SUB_OVERFLOW",
860 which indicates that the compiler supports
861 __builtin_sub_overflow(x,y,&z) for safely subtracting y from x into
862 z while checking for overflow.
863 "d_c99_variadic_macros"
865 From d_c99_variadic.U:
866 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
868 symbol, which indicates to the C program that C99 variadic macros
869 are available.
870 "d_casti32"
872 From d_casti32.U:
873 This variable conditionally defines CASTI32, which indicates
875 whether the C compiler can cast large floats to 32-bit ints.
876 "d_castneg"
878 From d_castneg.U:
879 This variable conditionally defines "CASTNEG", which indicates
881 whether the C compiler can cast negative float to unsigned.
882 "d_cbrt"
884 From d_cbrt.U:
885 This variable conditionally defines the "HAS_CBRT" symbol, which
887 indicates to the C program that the cbrt() (cube root) function is
888 available.
889 "d_chown"
891 From d_chown.U:
892 This variable conditionally defines the "HAS_CHOWN" symbol, which
894 indicates to the C program that the chown() routine is available.
895 "d_chroot"
897 From d_chroot.U:
898 This variable conditionally defines the "HAS_CHROOT" symbol, which
900 indicates to the C program that the chroot() routine is available.
901 "d_chsize"
903 From d_chsize.U:
904 This variable conditionally defines the "CHSIZE" symbol, which
906 indicates to the C program that the chsize() routine is available
907 to truncate files. You might need a -lx to get this routine.
908 "d_class"
910 From d_class.U:
911 This variable conditionally defines the "HAS_CLASS" symbol, which
913 indicates to the C program that the class() routine is available.
914 "d_clearenv"
916 From d_clearenv.U:
917 This variable conditionally defines the "HAS_CLEARENV" symbol,
919 which indicates to the C program that the clearenv () routine is
920 available.
921 "d_closedir"
923 From d_closedir.U:
924 This variable conditionally defines "HAS_CLOSEDIR" if closedir() is
926 available.
927 "d_cmsghdr_s"
929 From d_cmsghdr_s.U:
930 This variable conditionally defines the "HAS_STRUCT_CMSGHDR"
932 symbol, which indicates that the struct cmsghdr is supported.
933 "d_const"
935 From d_const.U:
936 This variable conditionally defines the "HASCONST" symbol, which
938 indicates to the C program that this C compiler knows about the
939 const type.
940 "d_copysign"
942 From d_copysign.U:
943 This variable conditionally defines the "HAS_COPYSIGN" symbol,
945 which indicates to the C program that the copysign() routine is
946 available.
947 "d_copysignl"
949 From d_copysignl.U:
950 This variable conditionally defines the "HAS_COPYSIGNL" symbol,
952 which indicates to the C program that the copysignl() routine is
953 available. If aintl is also present we can emulate modfl.
954 "d_cplusplus"
956 From d_cplusplus.U:
957 This variable conditionally defines the "USE_CPLUSPLUS" symbol,
959 which indicates that a C++ compiler was used to compiled Perl and
960 will be used to compile extensions.
961 "d_crypt"
963 From d_crypt.U:
964 This variable conditionally defines the "CRYPT" symbol, which
966 indicates to the C program that the crypt() routine is available to
967 encrypt passwords and the like.
968 "d_crypt_r"
970 From d_crypt_r.U:
971 This variable conditionally defines the "HAS_CRYPT_R" symbol, which
973 indicates to the C program that the crypt_r() routine is available.
974 "d_csh"
976 From d_csh.U:
977 This variable conditionally defines the "CSH" symbol, which
979 indicates to the C program that the C-shell exists.
980 "d_ctermid"
982 From d_ctermid.U:
983 This variable conditionally defines "CTERMID" if ctermid() is
985 available to generate filename for terminal.
986 "d_ctermid_r"
988 From d_ctermid_r.U:
989 This variable conditionally defines the "HAS_CTERMID_R" symbol,
991 which indicates to the C program that the ctermid_r() routine is
992 available.
993 "d_ctime64"
995 From d_timefuncs64.U:
996 This variable conditionally defines the HAS_CTIME64 symbol, which
998 indicates to the C program that the ctime64 () routine is
999 available.
1000 "d_ctime_r"
1002 From d_ctime_r.U:
1003 This variable conditionally defines the "HAS_CTIME_R" symbol, which
1005 indicates to the C program that the ctime_r() routine is available.
1006 "d_cuserid"
1008 From d_cuserid.U:
1009 This variable conditionally defines the "HAS_CUSERID" symbol, which
1011 indicates to the C program that the cuserid() routine is available
1012 to get character login names.
1013 "d_dbminitproto"
1015 From d_dbminitproto.U:
1016 This variable conditionally defines the "HAS_DBMINIT_PROTO" symbol,
1018 which indicates to the C program that the system provides a
1019 prototype for the dbminit() function. Otherwise, it is up to the
1020 program to supply one.
1021 "d_difftime"
1023 From d_difftime.U:
1024 This variable conditionally defines the "HAS_DIFFTIME" symbol,
1026 which indicates to the C program that the difftime() routine is
1027 available.
1028 "d_difftime64"
1030 From d_timefuncs64.U:
1031 This variable conditionally defines the HAS_DIFFTIME64 symbol,
1033 which indicates to the C program that the difftime64 () routine is
1034 available.
1035 "d_dir_dd_fd"
1037 From d_dir_dd_fd.U:
1038 This variable conditionally defines the "HAS_DIR_DD_FD" symbol,
1040 which indicates that the "DIR" directory stream type contains a
1041 member variable called dd_fd.
1042 "d_dirfd"
1044 From d_dirfd.U:
1045 This variable conditionally defines the "HAS_DIRFD" constant, which
1047 indicates to the C program that dirfd() is available to return the
1048 file descriptor of a directory stream.
1049 "d_dirnamlen"
1051 From i_dirent.U:
1052 This variable conditionally defines "DIRNAMLEN", which indicates to
1054 the C program that the length of directory entry names is provided
1055 by a d_namelen field.
1056 "d_dladdr"
1058 From d_dladdr.U:
1059 This variable conditionally defines the "HAS_DLADDR" symbol, which
1061 indicates to the C program that the dladdr() routine is available
1062 to get a stack trace.
1063 "d_dlerror"
1065 From d_dlerror.U:
1066 This variable conditionally defines the "HAS_DLERROR" symbol, which
1068 indicates to the C program that the dlerror() routine is available.
1069 "d_dlopen"
1071 From d_dlopen.U:
1072 This variable conditionally defines the "HAS_DLOPEN" symbol, which
1074 indicates to the C program that the dlopen() routine is available.
1075 "d_dlsymun"
1077 From d_dlsymun.U:
1078 This variable conditionally defines "DLSYM_NEEDS_UNDERSCORE", which
1080 indicates that we need to prepend an underscore to the symbol name
1081 before calling dlsym().
1082 "d_dosuid"
1084 From d_dosuid.U:
1085 This variable conditionally defines the symbol "DOSUID", which
1087 tells the C program that it should insert setuid emulation code on
1088 hosts which have setuid #! scripts disabled.
1089 "d_double_has_inf"
1091 From longdblfio.U:
1092 This variable conditionally defines the symbol "DOUBLE_HAS_INF"
1094 which indicates that the double type has an infinity.
1095 "d_double_has_nan"
1097 From longdblfio.U:
1098 This variable conditionally defines the symbol "DOUBLE_HAS_NAN"
1100 which indicates that the double type has a not-a-number.
1101 "d_double_has_negative_zero"
1103 From longdblfio.U:
1104 This variable conditionally defines the symbol
1106 "DOUBLE_HAS_NEGATIVE_ZERO" which indicates that the double type has
1107 a negative zero.
1108 "d_double_has_subnormals"
1110 From longdblfio.U:
1111 This variable conditionally defines the symbol
1113 "DOUBLE_HAS_SUBNORMALS" which indicates that the double type has
1114 subnormals (denormals).
1115 "d_double_style_cray"
1117 From longdblfio.U:
1118 This variable conditionally defines the symbol "DOUBLE_STYLE_CRAY"
1120 which indicates that the double is the 64-bit "CRAY" mainframe
1121 format.
1122 "d_double_style_ibm"
1124 From longdblfio.U:
1125 This variable conditionally defines the symbol "DOUBLE_STYLE_IBM",
1127 which indicates that the double is the 64-bit "IBM" mainframe
1128 format.
1129 "d_double_style_ieee"
1131 From longdblfio.U:
1132 This variable conditionally defines the symbol "DOUBLE_STYLE_IEEE",
1134 which indicates that the double is the 64-bit "IEEE" 754.
1135 "d_double_style_vax"
1137 From longdblfio.U:
1138 This variable conditionally defines the symbol "DOUBLE_STYLE_VAX",
1140 which indicates that the double is the 64-bit "VAX" format D or G.
1141 "d_drand48_r"
1143 From d_drand48_r.U:
1144 This variable conditionally defines the HAS_DRAND48_R symbol, which
1146 indicates to the C program that the drand48_r() routine is
1147 available.
1148 "d_drand48proto"
1150 From d_drand48proto.U:
1151 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
1153 which indicates to the C program that the system provides a
1154 prototype for the drand48() function. Otherwise, it is up to the
1155 program to supply one.
1156 "d_dup2"
1158 From d_dup2.U:
1159 This variable conditionally defines HAS_DUP2 if dup2() is available
1161 to duplicate file descriptors.
1162 "d_dup3"
1164 From d_dup3.U:
1165 This variable conditionally defines HAS_DUP3 if dup3() is available
1167 to duplicate file descriptors.
1168 "d_duplocale"
1170 From d_newlocale.U:
1171 This variable conditionally defines the "HAS_DUPLOCALE" symbol,
1173 which indicates to the C program that the duplocale() routine is
1174 available to duplicate a locale object.
1175 "d_eaccess"
1177 From d_eaccess.U:
1178 This variable conditionally defines the "HAS_EACCESS" symbol, which
1180 indicates to the C program that the eaccess() routine is available.
1181 "d_endgrent"
1183 From d_endgrent.U:
1184 This variable conditionally defines the "HAS_ENDGRENT" symbol,
1186 which indicates to the C program that the endgrent() routine is
1187 available for sequential access of the group database.
1188 "d_endgrent_r"
1190 From d_endgrent_r.U:
1191 This variable conditionally defines the "HAS_ENDGRENT_R" symbol,
1193 which indicates to the C program that the endgrent_r() routine is
1194 available.
1195 "d_endhent"
1197 From d_endhent.U:
1198 This variable conditionally defines "HAS_ENDHOSTENT" if
1200 endhostent() is available to close whatever was being used for host
1201 queries.
1202 "d_endhostent_r"
1204 From d_endhostent_r.U:
1205 This variable conditionally defines the "HAS_ENDHOSTENT_R" symbol,
1207 which indicates to the C program that the endhostent_r() routine is
1208 available.
1209 "d_endnent"
1211 From d_endnent.U:
1212 This variable conditionally defines "HAS_ENDNETENT" if endnetent()
1214 is available to close whatever was being used for network queries.
1215 "d_endnetent_r"
1217 From d_endnetent_r.U:
1218 This variable conditionally defines the "HAS_ENDNETENT_R" symbol,
1220 which indicates to the C program that the endnetent_r() routine is
1221 available.
1222 "d_endpent"
1224 From d_endpent.U:
1225 This variable conditionally defines "HAS_ENDPROTOENT" if
1227 endprotoent() is available to close whatever was being used for
1228 protocol queries.
1229 "d_endprotoent_r"
1231 From d_endprotoent_r.U:
1232 This variable conditionally defines the "HAS_ENDPROTOENT_R" symbol,
1234 which indicates to the C program that the endprotoent_r() routine
1235 is available.
1236 "d_endpwent"
1238 From d_endpwent.U:
1239 This variable conditionally defines the "HAS_ENDPWENT" symbol,
1241 which indicates to the C program that the endpwent() routine is
1242 available for sequential access of the passwd database.
1243 "d_endpwent_r"
1245 From d_endpwent_r.U:
1246 This variable conditionally defines the "HAS_ENDPWENT_R" symbol,
1248 which indicates to the C program that the endpwent_r() routine is
1249 available.
1250 "d_endsent"
1252 From d_endsent.U:
1253 This variable conditionally defines "HAS_ENDSERVENT" if
1255 endservent() is available to close whatever was being used for
1256 service queries.
1257 "d_endservent_r"
1259 From d_endservent_r.U:
1260 This variable conditionally defines the "HAS_ENDSERVENT_R" symbol,
1262 which indicates to the C program that the endservent_r() routine is
1263 available.
1264 "d_eofnblk"
1266 From nblock_io.U:
1267 This variable conditionally defines "EOF_NONBLOCK" if "EOF" can be
1269 seen when reading from a non-blocking I/O source.
1270 "d_erf"
1272 From d_erf.U:
1273 This variable conditionally defines the "HAS_ERF" symbol, which
1275 indicates to the C program that the erf() routine is available.
1276 "d_erfc"
1278 From d_erfc.U:
1279 This variable conditionally defines the "HAS_ERFC" symbol, which
1281 indicates to the C program that the erfc() routine is available.
1282 "d_eunice"
1284 From Guess.U:
1285 This variable conditionally defines the symbols "EUNICE" and "VAX",
1287 which alerts the C program that it must deal with idiosyncrasies of
1288 "VMS".
1289 "d_exp2"
1291 From d_exp2.U:
1292 This variable conditionally defines the HAS_EXP2 symbol, which
1294 indicates to the C program that the exp2() routine is available.
1295 "d_expm1"
1297 From d_expm1.U:
1298 This variable conditionally defines the HAS_EXPM1 symbol, which
1300 indicates to the C program that the expm1() routine is available.
1301 "d_faststdio"
1303 From d_faststdio.U:
1304 This variable conditionally defines the "HAS_FAST_STDIO" symbol,
1306 which indicates to the C program that the "fast stdio" is available
1307 to manipulate the stdio buffers directly.
1308 "d_fchdir"
1310 From d_fchdir.U:
1311 This variable conditionally defines the "HAS_FCHDIR" symbol, which
1313 indicates to the C program that the fchdir() routine is available.
1314 "d_fchmod"
1316 From d_fchmod.U:
1317 This variable conditionally defines the "HAS_FCHMOD" symbol, which
1319 indicates to the C program that the fchmod() routine is available
1320 to change mode of opened files.
1321 "d_fchmodat"
1323 From d_fsat.U:
1324 This variable conditionally defines the "HAS_FCHMODAT" symbol,
1326 which indicates the "POSIX" fchmodat() function is available.
1327 "d_fchown"
1329 From d_fchown.U:
1330 This variable conditionally defines the "HAS_FCHOWN" symbol, which
1332 indicates to the C program that the fchown() routine is available
1333 to change ownership of opened files.
1334 "d_fcntl"
1336 From d_fcntl.U:
1337 This variable conditionally defines the "HAS_FCNTL" symbol, and
1339 indicates whether the fcntl() function exists
1340 "d_fcntl_can_lock"
1342 From d_fcntl_can_lock.U:
1343 This variable conditionally defines the "FCNTL_CAN_LOCK" symbol and
1345 indicates whether file locking with fcntl() works.
1346 "d_fd_macros"
1348 From d_fd_set.U:
1349 This variable contains the eventual value of the "HAS_FD_MACROS"
1351 symbol, which indicates if your C compiler knows about the macros
1352 which manipulate an fd_set.
1353 "d_fd_set"
1355 From d_fd_set.U:
1356 This variable contains the eventual value of the "HAS_FD_SET"
1358 symbol, which indicates if your C compiler knows about the fd_set
1359 typedef.
1360 "d_fdclose"
1362 From d_fdclose.U:
1363 This variable conditionally defines the "HAS_FDCLOSE" symbol, which
1365 indicates to the C program that the fdclose() routine is available.
1366 "d_fdim"
1368 From d_fdim.U:
1369 This variable conditionally defines the "HAS_FDIM" symbol, which
1371 indicates to the C program that the fdim() routine is available.
1372 "d_fds_bits"
1374 From d_fd_set.U:
1375 This variable contains the eventual value of the "HAS_FDS_BITS"
1377 symbol, which indicates if your fd_set typedef contains the
1378 fds_bits member. If you have an fd_set typedef, but the dweebs who
1379 installed it did a half-fast job and neglected to provide the
1380 macros to manipulate an fd_set, "HAS_FDS_BITS" will let us know how
1381 to fix the gaffe.
1382 "d_fegetround"
1384 From d_fegetround.U:
1385 This variable conditionally defines "HAS_FEGETROUND" if
1387 fegetround() is available to get the floating point rounding mode.
1388 "d_fgetpos"
1390 From d_fgetpos.U:
1391 This variable conditionally defines "HAS_FGETPOS" if fgetpos() is
1393 available to get the file position indicator.
1394 "d_finite"
1396 From d_finite.U:
1397 This variable conditionally defines the "HAS_FINITE" symbol, which
1399 indicates to the C program that the finite() routine is available.
1400 "d_finitel"
1402 From d_finitel.U:
1403 This variable conditionally defines the "HAS_FINITEL" symbol, which
1405 indicates to the C program that the finitel() routine is available.
1406 "d_flexfnam"
1408 From d_flexfnam.U:
1409 This variable conditionally defines the "FLEXFILENAMES" symbol,
1411 which indicates that the system supports filenames longer than 14
1412 characters.
1413 "d_flock"
1415 From d_flock.U:
1416 This variable conditionally defines "HAS_FLOCK" if flock() is
1418 available to do file locking.
1419 "d_flockproto"
1421 From d_flockproto.U:
1422 This variable conditionally defines the "HAS_FLOCK_PROTO" symbol,
1424 which indicates to the C program that the system provides a
1425 prototype for the flock() function. Otherwise, it is up to the
1426 program to supply one.
1427 "d_fma"
1429 From d_fma.U:
1430 This variable conditionally defines the "HAS_FMA" symbol, which
1432 indicates to the C program that the fma() routine is available.
1433 "d_fmax"
1435 From d_fmax.U:
1436 This variable conditionally defines the "HAS_FMAX" symbol, which
1438 indicates to the C program that the fmax() routine is available.
1439 "d_fmin"
1441 From d_fmin.U:
1442 This variable conditionally defines the "HAS_FMIN" symbol, which
1444 indicates to the C program that the fmin() routine is available.
1445 "d_fork"
1447 From d_fork.U:
1448 This variable conditionally defines the "HAS_FORK" symbol, which
1450 indicates to the C program that the fork() routine is available.
1451 "d_fp_class"
1453 From d_fp_class.U:
1454 This variable conditionally defines the "HAS_FP_CLASS" symbol,
1456 which indicates to the C program that the fp_class() routine is
1457 available.
1458 "d_fp_classify"
1460 From d_fpclassify.U:
1461 This variable conditionally defines the "HAS_FP_CLASSIFY" symbol,
1463 which indicates to the C program that the fp_classify() routine is
1464 available.
1465 "d_fp_classl"
1467 From d_fp_classl.U:
1468 This variable conditionally defines the "HAS_FP_CLASSL" symbol,
1470 which indicates to the C program that the fp_classl() routine is
1471 available.
1472 "d_fpathconf"
1474 From d_pathconf.U:
1475 This variable conditionally defines the "HAS_FPATHCONF" symbol,
1477 which indicates to the C program that the pathconf() routine is
1478 available to determine file-system related limits and options
1479 associated with a given open file descriptor.
1480 "d_fpclass"
1482 From d_fpclass.U:
1483 This variable conditionally defines the "HAS_FPCLASS" symbol, which
1485 indicates to the C program that the fpclass() routine is available.
1486 "d_fpclassify"
1488 From d_fpclassify.U:
1489 This variable conditionally defines the "HAS_FPCLASSIFY" symbol,
1491 which indicates to the C program that the fpclassify() routine is
1492 available.
1493 "d_fpclassl"
1495 From d_fpclassl.U:
1496 This variable conditionally defines the "HAS_FPCLASSL" symbol,
1498 which indicates to the C program that the fpclassl() routine is
1499 available.
1500 "d_fpgetround"
1502 From d_fpgetround.U:
1503 This variable conditionally defines "HAS_FPGETROUND" if
1505 fpgetround() is available to get the floating point rounding mode.
1506 "d_fpos64_t"
1508 From d_fpos64_t.U:
1509 This symbol will be defined if the C compiler supports fpos64_t.
1511 "d_freelocale"
1513 From d_newlocale.U:
1514 This variable conditionally defines the "HAS_FREELOCALE" symbol,
1516 which indicates to the C program that the freelocale() routine is
1517 available to deallocates the resources associated with a locale
1518 object.
1519 "d_frexpl"
1521 From d_frexpl.U:
1522 This variable conditionally defines the "HAS_FREXPL" symbol, which
1524 indicates to the C program that the frexpl() routine is available.
1525 "d_fs_data_s"
1527 From d_fs_data_s.U:
1528 This variable conditionally defines the "HAS_STRUCT_FS_DATA"
1530 symbol, which indicates that the struct fs_data is supported.
1531 "d_fseeko"
1533 From d_fseeko.U:
1534 This variable conditionally defines the "HAS_FSEEKO" symbol, which
1536 indicates to the C program that the fseeko() routine is available.
1537 "d_fsetpos"
1539 From d_fsetpos.U:
1540 This variable conditionally defines "HAS_FSETPOS" if fsetpos() is
1542 available to set the file position indicator.
1543 "d_fstatfs"
1545 From d_fstatfs.U:
1546 This variable conditionally defines the "HAS_FSTATFS" symbol, which
1548 indicates to the C program that the fstatfs() routine is available.
1549 "d_fstatvfs"
1551 From d_statvfs.U:
1552 This variable conditionally defines the "HAS_FSTATVFS" symbol,
1554 which indicates to the C program that the fstatvfs() routine is
1555 available.
1556 "d_fsync"
1558 From d_fsync.U:
1559 This variable conditionally defines the "HAS_FSYNC" symbol, which
1561 indicates to the C program that the fsync() routine is available.
1562 "d_ftello"
1564 From d_ftello.U:
1565 This variable conditionally defines the "HAS_FTELLO" symbol, which
1567 indicates to the C program that the ftello() routine is available.
1568 "d_ftime"
1570 From d_ftime.U:
1571 This variable conditionally defines the "HAS_FTIME" symbol, which
1573 indicates that the ftime() routine exists. The ftime() routine is
1574 basically a sub-second accuracy clock.
1575 "d_futimes"
1577 From d_futimes.U:
1578 This variable conditionally defines the "HAS_FUTIMES" symbol, which
1580 indicates to the C program that the futimes() routine is available.
1581 "d_gai_strerror"
1583 From d_gai_strerror.U:
1584 This variable conditionally defines the "HAS_GAI_STRERROR" symbol
1586 if the gai_strerror() routine is available and can be used to
1587 translate error codes returned by getaddrinfo() into human readable
1588 strings.
1589 "d_Gconvert"
1591 From d_gconvert.U:
1592 This variable holds what Gconvert is defined as to convert floating
1594 point numbers into strings. By default, Configure sets "this"
1595 macro to use the first of gconvert, gcvt, or sprintf that pass
1596 sprintf-%g-like behavior tests. If perl is using long doubles, the
1597 macro uses the first of the following functions that pass
1598 Configure's tests: qgcvt, sprintf (if Configure knows how to make
1599 sprintf format long doubles--see sPRIgldbl), gconvert, gcvt, and
1600 sprintf (casting to double). The gconvert_preference and
1601 gconvert_ld_preference variables can be used to alter Configure's
1602 preferences, for doubles and long doubles, respectively. If
1603 present, they contain a space-separated list of one or more of the
1604 above function names in the order they should be tried.
1605 d_Gconvert may be set to override Configure with a platform-
1607 specific function. If this function expects a double, a different
1608 value may need to be set by the uselongdouble.cbu call-back unit so
1609 that long doubles can be formatted without loss of precision.
1610 "d_gdbm_ndbm_h_uses_prototypes"
1612 From i_ndbm.U:
1613 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
1615 symbol, which indicates that the gdbm-ndbm.h include file uses real
1616 "ANSI" C prototypes instead of K&R style function declarations. K&R
1617 style declarations are unsupported in C++, so the include file
1618 requires special handling when using a C++ compiler and this
1619 variable is undefined. Consult the different
1620 d_*ndbm_h_uses_prototypes variables to get the same information for
1621 alternative ndbm.h include files.
1622 "d_gdbmndbm_h_uses_prototypes"
1624 From i_ndbm.U:
1625 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
1627 symbol, which indicates that the gdbm/ndbm.h include file uses real
1628 "ANSI" C prototypes instead of K&R style function declarations. K&R
1629 style declarations are unsupported in C++, so the include file
1630 requires special handling when using a C++ compiler and this
1631 variable is undefined. Consult the different
1632 d_*ndbm_h_uses_prototypes variables to get the same information for
1633 alternative ndbm.h include files.
1634 "d_getaddrinfo"
1636 From d_getaddrinfo.U:
1637 This variable conditionally defines the "HAS_GETADDRINFO" symbol,
1639 which indicates to the C program that the getaddrinfo() function is
1640 available.
1641 "d_getcwd"
1643 From d_getcwd.U:
1644 This variable conditionally defines the "HAS_GETCWD" symbol, which
1646 indicates to the C program that the getcwd() routine is available
1647 to get the current working directory.
1648 "d_getespwnam"
1650 From d_getespwnam.U:
1651 This variable conditionally defines "HAS_GETESPWNAM" if
1653 getespwnam() is available to retrieve enhanced (shadow) password
1654 entries by name.
1655 "d_getfsstat"
1657 From d_getfsstat.U:
1658 This variable conditionally defines the "HAS_GETFSSTAT" symbol,
1660 which indicates to the C program that the getfsstat() routine is
1661 available.
1662 "d_getgrent"
1664 From d_getgrent.U:
1665 This variable conditionally defines the "HAS_GETGRENT" symbol,
1667 which indicates to the C program that the getgrent() routine is
1668 available for sequential access of the group database.
1669 "d_getgrent_r"
1671 From d_getgrent_r.U:
1672 This variable conditionally defines the "HAS_GETGRENT_R" symbol,
1674 which indicates to the C program that the getgrent_r() routine is
1675 available.
1676 "d_getgrgid_r"
1678 From d_getgrgid_r.U:
1679 This variable conditionally defines the "HAS_GETGRGID_R" symbol,
1681 which indicates to the C program that the getgrgid_r() routine is
1682 available.
1683 "d_getgrnam_r"
1685 From d_getgrnam_r.U:
1686 This variable conditionally defines the "HAS_GETGRNAM_R" symbol,
1688 which indicates to the C program that the getgrnam_r() routine is
1689 available.
1690 "d_getgrps"
1692 From d_getgrps.U:
1693 This variable conditionally defines the "HAS_GETGROUPS" symbol,
1695 which indicates to the C program that the getgroups() routine is
1696 available to get the list of process groups.
1697 "d_gethbyaddr"
1699 From d_gethbyad.U:
1700 This variable conditionally defines the "HAS_GETHOSTBYADDR" symbol,
1702 which indicates to the C program that the gethostbyaddr() routine
1703 is available to look up hosts by their "IP" addresses.
1704 "d_gethbyname"
1706 From d_gethbynm.U:
1707 This variable conditionally defines the "HAS_GETHOSTBYNAME" symbol,
1709 which indicates to the C program that the gethostbyname() routine
1710 is available to look up host names in some data base or other.
1711 "d_gethent"
1713 From d_gethent.U:
1714 This variable conditionally defines "HAS_GETHOSTENT" if
1716 gethostent() is available to look up host names in some data base
1717 or another.
1718 "d_gethname"
1720 From d_gethname.U:
1721 This variable conditionally defines the "HAS_GETHOSTNAME" symbol,
1723 which indicates to the C program that the gethostname() routine may
1724 be used to derive the host name.
1725 "d_gethostbyaddr_r"
1727 From d_gethostbyaddr_r.U:
1728 This variable conditionally defines the "HAS_GETHOSTBYADDR_R"
1730 symbol, which indicates to the C program that the gethostbyaddr_r()
1731 routine is available.
1732 "d_gethostbyname_r"
1734 From d_gethostbyname_r.U:
1735 This variable conditionally defines the "HAS_GETHOSTBYNAME_R"
1737 symbol, which indicates to the C program that the gethostbyname_r()
1738 routine is available.
1739 "d_gethostent_r"
1741 From d_gethostent_r.U:
1742 This variable conditionally defines the "HAS_GETHOSTENT_R" symbol,
1744 which indicates to the C program that the gethostent_r() routine is
1745 available.
1746 "d_gethostprotos"
1748 From d_gethostprotos.U:
1749 This variable conditionally defines the "HAS_GETHOST_PROTOS"
1751 symbol, which indicates to the C program that <netdb.h> supplies
1752 prototypes for the various gethost*() functions. See also
1753 netdbtype.U for probing for various netdb types.
1754 "d_getitimer"
1756 From d_getitimer.U:
1757 This variable conditionally defines the "HAS_GETITIMER" symbol,
1759 which indicates to the C program that the getitimer() routine is
1760 available.
1761 "d_getlogin"
1763 From d_getlogin.U:
1764 This variable conditionally defines the "HAS_GETLOGIN" symbol,
1766 which indicates to the C program that the getlogin() routine is
1767 available to get the login name.
1768 "d_getlogin_r"
1770 From d_getlogin_r.U:
1771 This variable conditionally defines the "HAS_GETLOGIN_R" symbol,
1773 which indicates to the C program that the getlogin_r() routine is
1774 available.
1775 "d_getmnt"
1777 From d_getmnt.U:
1778 This variable conditionally defines the "HAS_GETMNT" symbol, which
1780 indicates to the C program that the getmnt() routine is available
1781 to retrieve one or more mount info blocks by filename.
1782 "d_getmntent"
1784 From d_getmntent.U:
1785 This variable conditionally defines the "HAS_GETMNTENT" symbol,
1787 which indicates to the C program that the getmntent() routine is
1788 available to iterate through mounted files to get their mount info.
1789 "d_getnameinfo"
1791 From d_getnameinfo.U:
1792 This variable conditionally defines the "HAS_GETNAMEINFO" symbol,
1794 which indicates to the C program that the getnameinfo() function is
1795 available.
1796 "d_getnbyaddr"
1798 From d_getnbyad.U:
1799 This variable conditionally defines the "HAS_GETNETBYADDR" symbol,
1801 which indicates to the C program that the getnetbyaddr() routine is
1802 available to look up networks by their "IP" addresses.
1803 "d_getnbyname"
1805 From d_getnbynm.U:
1806 This variable conditionally defines the "HAS_GETNETBYNAME" symbol,
1808 which indicates to the C program that the getnetbyname() routine is
1809 available to look up networks by their names.
1810 "d_getnent"
1812 From d_getnent.U:
1813 This variable conditionally defines "HAS_GETNETENT" if getnetent()
1815 is available to look up network names in some data base or another.
1816 "d_getnetbyaddr_r"
1818 From d_getnetbyaddr_r.U:
1819 This variable conditionally defines the "HAS_GETNETBYADDR_R"
1821 symbol, which indicates to the C program that the getnetbyaddr_r()
1822 routine is available.
1823 "d_getnetbyname_r"
1825 From d_getnetbyname_r.U:
1826 This variable conditionally defines the "HAS_GETNETBYNAME_R"
1828 symbol, which indicates to the C program that the getnetbyname_r()
1829 routine is available.
1830 "d_getnetent_r"
1832 From d_getnetent_r.U:
1833 This variable conditionally defines the "HAS_GETNETENT_R" symbol,
1835 which indicates to the C program that the getnetent_r() routine is
1836 available.
1837 "d_getnetprotos"
1839 From d_getnetprotos.U:
1840 This variable conditionally defines the "HAS_GETNET_PROTOS" symbol,
1842 which indicates to the C program that <netdb.h> supplies prototypes
1843 for the various getnet*() functions. See also netdbtype.U for
1844 probing for various netdb types.
1845 "d_getpagsz"
1847 From d_getpagsz.U:
1848 This variable conditionally defines "HAS_GETPAGESIZE" if
1850 getpagesize() is available to get the system page size.
1851 "d_getpbyname"
1853 From d_getprotby.U:
1854 This variable conditionally defines the "HAS_GETPROTOBYNAME"
1856 symbol, which indicates to the C program that the getprotobyname()
1857 routine is available to look up protocols by their name.
1858 "d_getpbynumber"
1860 From d_getprotby.U:
1861 This variable conditionally defines the "HAS_GETPROTOBYNUMBER"
1863 symbol, which indicates to the C program that the
1864 getprotobynumber() routine is available to look up protocols by
1865 their number.
1866 "d_getpent"
1868 From d_getpent.U:
1869 This variable conditionally defines "HAS_GETPROTOENT" if
1871 getprotoent() is available to look up protocols in some data base
1872 or another.
1873 "d_getpgid"
1875 From d_getpgid.U:
1876 This variable conditionally defines the "HAS_GETPGID" symbol, which
1878 indicates to the C program that the getpgid(pid) function is
1879 available to get the process group id.
1880 "d_getpgrp"
1882 From d_getpgrp.U:
1883 This variable conditionally defines "HAS_GETPGRP" if getpgrp() is
1885 available to get the current process group.
1886 "d_getpgrp2"
1888 From d_getpgrp2.U:
1889 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1891 indicates to the C program that the getpgrp2() (as in DG/"UX")
1892 routine is available to get the current process group.
1893 "d_getppid"
1895 From d_getppid.U:
1896 This variable conditionally defines the "HAS_GETPPID" symbol, which
1898 indicates to the C program that the getppid() routine is available
1899 to get the parent process "ID".
1900 "d_getprior"
1902 From d_getprior.U:
1903 This variable conditionally defines "HAS_GETPRIORITY" if
1905 getpriority() is available to get a process's priority.
1906 "d_getprotobyname_r"
1908 From d_getprotobyname_r.U:
1909 This variable conditionally defines the "HAS_GETPROTOBYNAME_R"
1911 symbol, which indicates to the C program that the
1912 getprotobyname_r() routine is available.
1913 "d_getprotobynumber_r"
1915 From d_getprotobynumber_r.U:
1916 This variable conditionally defines the "HAS_GETPROTOBYNUMBER_R"
1918 symbol, which indicates to the C program that the
1919 getprotobynumber_r() routine is available.
1920 "d_getprotoent_r"
1922 From d_getprotoent_r.U:
1923 This variable conditionally defines the "HAS_GETPROTOENT_R" symbol,
1925 which indicates to the C program that the getprotoent_r() routine
1926 is available.
1927 "d_getprotoprotos"
1929 From d_getprotoprotos.U:
1930 This variable conditionally defines the "HAS_GETPROTO_PROTOS"
1932 symbol, which indicates to the C program that <netdb.h> supplies
1933 prototypes for the various getproto*() functions. See also
1934 netdbtype.U for probing for various netdb types.
1935 "d_getprpwnam"
1937 From d_getprpwnam.U:
1938 This variable conditionally defines "HAS_GETPRPWNAM" if
1940 getprpwnam() is available to retrieve protected (shadow) password
1941 entries by name.
1942 "d_getpwent"
1944 From d_getpwent.U:
1945 This variable conditionally defines the "HAS_GETPWENT" symbol,
1947 which indicates to the C program that the getpwent() routine is
1948 available for sequential access of the passwd database.
1949 "d_getpwent_r"
1951 From d_getpwent_r.U:
1952 This variable conditionally defines the "HAS_GETPWENT_R" symbol,
1954 which indicates to the C program that the getpwent_r() routine is
1955 available.
1956 "d_getpwnam_r"
1958 From d_getpwnam_r.U:
1959 This variable conditionally defines the "HAS_GETPWNAM_R" symbol,
1961 which indicates to the C program that the getpwnam_r() routine is
1962 available.
1963 "d_getpwuid_r"
1965 From d_getpwuid_r.U:
1966 This variable conditionally defines the "HAS_GETPWUID_R" symbol,
1968 which indicates to the C program that the getpwuid_r() routine is
1969 available.
1970 "d_getsbyname"
1972 From d_getsrvby.U:
1973 This variable conditionally defines the "HAS_GETSERVBYNAME" symbol,
1975 which indicates to the C program that the getservbyname() routine
1976 is available to look up services by their name.
1977 "d_getsbyport"
1979 From d_getsrvby.U:
1980 This variable conditionally defines the "HAS_GETSERVBYPORT" symbol,
1982 which indicates to the C program that the getservbyport() routine
1983 is available to look up services by their port.
1984 "d_getsent"
1986 From d_getsent.U:
1987 This variable conditionally defines "HAS_GETSERVENT" if
1989 getservent() is available to look up network services in some data
1990 base or another.
1991 "d_getservbyname_r"
1993 From d_getservbyname_r.U:
1994 This variable conditionally defines the "HAS_GETSERVBYNAME_R"
1996 symbol, which indicates to the C program that the getservbyname_r()
1997 routine is available.
1998 "d_getservbyport_r"
2000 From d_getservbyport_r.U:
2001 This variable conditionally defines the "HAS_GETSERVBYPORT_R"
2003 symbol, which indicates to the C program that the getservbyport_r()
2004 routine is available.
2005 "d_getservent_r"
2007 From d_getservent_r.U:
2008 This variable conditionally defines the "HAS_GETSERVENT_R" symbol,
2010 which indicates to the C program that the getservent_r() routine is
2011 available.
2012 "d_getservprotos"
2014 From d_getservprotos.U:
2015 This variable conditionally defines the "HAS_GETSERV_PROTOS"
2017 symbol, which indicates to the C program that <netdb.h> supplies
2018 prototypes for the various getserv*() functions. See also
2019 netdbtype.U for probing for various netdb types.
2020 "d_getspnam"
2022 From d_getspnam.U:
2023 This variable conditionally defines "HAS_GETSPNAM" if getspnam() is
2025 available to retrieve SysV shadow password entries by name.
2026 "d_getspnam_r"
2028 From d_getspnam_r.U:
2029 This variable conditionally defines the "HAS_GETSPNAM_R" symbol,
2031 which indicates to the C program that the getspnam_r() routine is
2032 available.
2033 "d_gettimeod"
2035 From d_ftime.U:
2036 This variable conditionally defines the "HAS_GETTIMEOFDAY" symbol,
2038 which indicates that the gettimeofday() system call exists (to
2039 obtain a sub-second accuracy clock). You should probably include
2040 <sys/resource.h>.
2041 "d_gmtime64"
2043 From d_timefuncs64.U:
2044 This variable conditionally defines the HAS_GMTIME64 symbol, which
2046 indicates to the C program that the gmtime64 () routine is
2047 available.
2048 "d_gmtime_r"
2050 From d_gmtime_r.U:
2051 This variable conditionally defines the "HAS_GMTIME_R" symbol,
2053 which indicates to the C program that the gmtime_r() routine is
2054 available.
2055 "d_gnulibc"
2057 From d_gnulibc.U:
2058 Defined if we're dealing with the "GNU" C Library.
2060 "d_grpasswd"
2062 From i_grp.U:
2063 This variable conditionally defines "GRPASSWD", which indicates
2065 that struct group in <grp.h> contains gr_passwd.
2066 "d_hasmntopt"
2068 From d_hasmntopt.U:
2069 This variable conditionally defines the "HAS_HASMNTOPT" symbol,
2071 which indicates to the C program that the hasmntopt() routine is
2072 available to query the mount options of file systems.
2073 "d_htonl"
2075 From d_htonl.U:
2076 This variable conditionally defines "HAS_HTONL" if htonl() and its
2078 friends are available to do network order byte swapping.
2079 "d_hypot"
2081 From d_hypot.U:
2082 This variable conditionally defines "HAS_HYPOT" if hypot is
2084 available for numerically stable hypotenuse function.
2085 "d_ilogb"
2087 From d_ilogb.U:
2088 This variable conditionally defines the "HAS_ILOGB" symbol, which
2090 indicates to the C program that the ilogb() routine is available
2091 for extracting the exponent of double x as a signed integer.
2092 "d_ilogbl"
2094 From d_ilogbl.U:
2095 This variable conditionally defines the "HAS_ILOGBL" symbol, which
2097 indicates to the C program that the ilogbl() routine is available
2098 for extracting the exponent of long double x as a signed integer.
2099 If scalbnl is also present we can emulate frexpl.
2100 "d_inc_version_list"
2102 From inc_version_list.U:
2103 This variable conditionally defines "PERL_INC_VERSION_LIST". It is
2105 set to undef when "PERL_INC_VERSION_LIST" is empty.
2106 "d_inetaton"
2108 From d_inetaton.U:
2109 This variable conditionally defines the "HAS_INET_ATON" symbol,
2111 which indicates to the C program that the inet_aton() function is
2112 available to parse "IP" address "dotted-quad" strings.
2113 "d_inetntop"
2115 From d_inetntop.U:
2116 This variable conditionally defines the "HAS_INETNTOP" symbol,
2118 which indicates to the C program that the inet_ntop() function is
2119 available.
2120 "d_inetpton"
2122 From d_inetpton.U:
2123 This variable conditionally defines the "HAS_INETPTON" symbol,
2125 which indicates to the C program that the inet_pton() function is
2126 available.
2127 "d_int64_t"
2129 From d_int64_t.U:
2130 This symbol will be defined if the C compiler supports int64_t.
2132 "d_ip_mreq"
2134 From d_socket.U:
2135 This variable conditionally defines the "HAS_IP_MREQ" symbol, which
2137 indicates the availability of a struct ip_mreq.
2138 "d_ip_mreq_source"
2140 From d_socket.U:
2141 This variable conditionally defines the "HAS_IP_MREQ_SOURCE"
2143 symbol, which indicates the availability of a struct
2144 ip_mreq_source.
2145 "d_ipv6_mreq"
2147 From d_socket.U:
2148 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
2150 indicates the availability of a struct ipv6_mreq.
2151 "d_ipv6_mreq_source"
2153 From d_socket.U:
2154 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE
2156 symbol, which indicates the availability of a struct
2157 ipv6_mreq_source.
2158 "d_isascii"
2160 From d_isascii.U:
2161 This variable conditionally defines the "HAS_ISASCII" constant,
2163 which indicates to the C program that isascii() is available.
2164 "d_isblank"
2166 From d_isblank.U:
2167 This variable conditionally defines the "HAS_ISBLANK" constant,
2169 which indicates to the C program that isblank() is available.
2170 "d_isfinite"
2172 From d_isfinite.U:
2173 This variable conditionally defines the "HAS_ISFINITE" symbol,
2175 which indicates to the C program that the isfinite() routine is
2176 available.
2177 "d_isfinitel"
2179 From d_isfinitel.U:
2180 This variable conditionally defines the "HAS_ISFINITEL" symbol,
2182 which indicates to the C program that the isfinitel() routine is
2183 available.
2184 "d_isinf"
2186 From d_isinf.U:
2187 This variable conditionally defines the "HAS_ISINF" symbol, which
2189 indicates to the C program that the isinf() routine is available.
2190 "d_isinfl"
2192 From d_isinfl.U:
2193 This variable conditionally defines the "HAS_ISINFL" symbol, which
2195 indicates to the C program that the isinfl() routine is available.
2196 "d_isless"
2198 From d_isless.U:
2199 This variable conditionally defines the "HAS_ISLESS" symbol, which
2201 indicates to the C program that the isless() routine is available.
2202 "d_isnan"
2204 From d_isnan.U:
2205 This variable conditionally defines the "HAS_ISNAN" symbol, which
2207 indicates to the C program that the isnan() routine is available.
2208 "d_isnanl"
2210 From d_isnanl.U:
2211 This variable conditionally defines the "HAS_ISNANL" symbol, which
2213 indicates to the C program that the isnanl() routine is available.
2214 "d_isnormal"
2216 From d_isnormal.U:
2217 This variable conditionally defines the "HAS_ISNORMAL" symbol,
2219 which indicates to the C program that the isnormal() routine is
2220 available.
2221 "d_j0"
2223 From d_j0.U:
2224 This variable conditionally defines the HAS_J0 symbol, which
2226 indicates to the C program that the j0() routine is available.
2227 "d_j0l"
2229 From d_j0.U:
2230 This variable conditionally defines the HAS_J0L symbol, which
2232 indicates to the C program that the j0l() routine is available.
2233 "d_killpg"
2235 From d_killpg.U:
2236 This variable conditionally defines the "HAS_KILLPG" symbol, which
2238 indicates to the C program that the killpg() routine is available
2239 to kill process groups.
2240 "d_lc_monetary_2008"
2242 From d_lc_monetary_2008.U:
2243 This variable conditionally defines HAS_LC_MONETARY_2008 if libc
2245 has the international currency locale rules from "POSIX"
2246 1003.1-2008.
2247 "d_lchown"
2249 From d_lchown.U:
2250 This variable conditionally defines the "HAS_LCHOWN" symbol, which
2252 indicates to the C program that the lchown() routine is available
2253 to operate on a symbolic link (instead of following the link).
2254 "d_ldbl_dig"
2256 From d_ldbl_dig.U:
2257 This variable conditionally defines d_ldbl_dig if this system's
2259 header files provide "LDBL_DIG", which is the number of significant
2260 digits in a long double precision number.
2261 "d_ldexpl"
2263 From d_longdbl.U:
2264 This variable conditionally defines the "HAS_LDEXPL" symbol, which
2266 indicates to the C program that the ldexpl() routine is available.
2267 "d_lgamma"
2269 From d_lgamma.U:
2270 This variable conditionally defines the "HAS_LGAMMA" symbol, which
2272 indicates to the C program that the lgamma() routine is available
2273 for the log gamma function. See also d_tgamma and d_lgamma_r.
2274 "d_lgamma_r"
2276 From d_lgamma_r.U:
2277 This variable conditionally defines the "HAS_LGAMMA_R" symbol,
2279 which indicates to the C program that the lgamma_r() routine is
2280 available for the log gamma function, without using the global
2281 signgam variable.
2282 "d_libm_lib_version"
2284 From d_libm_lib_version.U:
2285 This variable conditionally defines the "LIBM_LIB_VERSION" symbol,
2287 which indicates to the C program that math.h defines "_LIB_VERSION"
2288 being available in libm
2289 "d_libname_unique"
2291 From so.U:
2292 This variable is defined if the target system insists on unique
2294 basenames for shared library files. This is currently true on
2295 Android, false everywhere else we know of. Defaults to "undef".
2296 "d_link"
2298 From d_link.U:
2299 This variable conditionally defines "HAS_LINK" if link() is
2301 available to create hard links.
2302 "d_linkat"
2304 From d_fsat.U:
2305 This variable conditionally defines the "HAS_LINKAT" symbol, which
2307 indicates the "POSIX" linkat() function is available.
2308 "d_llrint"
2310 From d_llrint.U:
2311 This variable conditionally defines the "HAS_LLRINT" symbol, which
2313 indicates to the C program that the llrint() routine is available
2314 to return the long long value closest to a double (according to the
2315 current rounding mode).
2316 "d_llrintl"
2318 From d_llrintl.U:
2319 This variable conditionally defines the "HAS_LLRINTL" symbol, which
2321 indicates to the C program that the llrintl() routine is available
2322 to return the long long value closest to a long double (according
2323 to the current rounding mode).
2324 "d_llround"
2326 From d_llround.U:
2327 This variable conditionally defines the "HAS_LLROUND" symbol, which
2329 indicates to the C program that the llround() routine is available
2330 to return the long long value nearest to x.
2331 "d_llroundl"
2333 From d_llroundl.U:
2334 This variable conditionally defines the "HAS_LLROUNDL" symbol,
2336 which indicates to the C program that the llroundl() routine is
2337 available to return the long long value nearest to x away from
2338 zero.
2339 "d_localeconv_l"
2341 From d_localeconv_l.U:
2342 This variable conditionally defines the "HAS_LOCALECONV_L" symbol,
2344 which indicates to the C program that the localeconv_l() routine is
2345 available.
2346 "d_localtime64"
2348 From d_timefuncs64.U:
2349 This variable conditionally defines the HAS_LOCALTIME64 symbol,
2351 which indicates to the C program that the localtime64 () routine is
2352 available.
2353 "d_localtime_r"
2355 From d_localtime_r.U:
2356 This variable conditionally defines the "HAS_LOCALTIME_R" symbol,
2358 which indicates to the C program that the localtime_r() routine is
2359 available.
2360 "d_localtime_r_needs_tzset"
2362 From d_localtime_r.U:
2363 This variable conditionally defines the "LOCALTIME_R_NEEDS_TZSET"
2365 symbol, which makes us call tzset before localtime_r()
2366 "d_locconv"
2368 From d_locconv.U:
2369 This variable conditionally defines "HAS_LOCALECONV" if
2371 localeconv() is available for numeric and monetary formatting
2372 conventions.
2373 "d_lockf"
2375 From d_lockf.U:
2376 This variable conditionally defines "HAS_LOCKF" if lockf() is
2378 available to do file locking.
2379 "d_log1p"
2381 From d_log1p.U:
2382 This variable conditionally defines the HAS_LOG1P symbol, which
2384 indicates to the C program that the logp1() routine is available to
2385 compute log(1 + x) for values of x close to zero.
2386 "d_log2"
2388 From d_log2.U:
2389 This variable conditionally defines the HAS_LOG2 symbol, which
2391 indicates to the C program that the log2() routine is available to
2392 compute log base two.
2393 "d_logb"
2395 From d_logb.U:
2396 This variable conditionally defines the "HAS_LOGB" symbol, which
2398 indicates to the C program that the logb() routine is available to
2399 extract the exponent of x.
2400 "d_long_double_style_ieee"
2402 From d_longdbl.U:
2403 This variable conditionally defines "LONG_DOUBLE_STYLE_IEEE" if the
2405 long double is any of the "IEEE" 754 style long doubles:
2406 "LONG_DOUBLE_STYLE_IEEE_STD", "LONG_DOUBLE_STYLE_IEEE_EXTENDED",
2407 "LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE".
2408 "d_long_double_style_ieee_doubledouble"
2410 From d_longdbl.U:
2411 This variable conditionally defines
2413 "LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE" if the long double is the
2414 128-bit "IEEE" 754 double-double.
2415 "d_long_double_style_ieee_extended"
2417 From d_longdbl.U:
2418 This variable conditionally defines
2420 "LONG_DOUBLE_STYLE_IEEE_EXTENDED" if the long double is the 80-bit
2421 "IEEE" 754 extended precision. Note that despite the "extended"
2422 this is less than the "std", since thisis an extension of the
2423 double precision.
2424 "d_long_double_style_ieee_std"
2426 From d_longdbl.U:
2427 This variable conditionally defines "LONG_DOUBLE_STYLE_IEEE_STD" if
2429 the long double is the 128-bit "IEEE" 754.
2430 "d_long_double_style_vax"
2432 From d_longdbl.U:
2433 This variable conditionally defines "LONG_DOUBLE_STYLE_VAX" if the
2435 long double is the 128-bit "VAX" format H.
2436 "d_longdbl"
2438 From d_longdbl.U:
2439 This variable conditionally defines "HAS_LONG_DOUBLE" if the long
2441 double type is supported.
2442 "d_longlong"
2444 From d_longlong.U:
2445 This variable conditionally defines "HAS_LONG_LONG" if the long
2447 long type is supported.
2448 "d_lrint"
2450 From d_lrint.U:
2451 This variable conditionally defines the "HAS_LRINT" symbol, which
2453 indicates to the C program that the lrint() routine is available to
2454 return the integral value closest to a double (according to the
2455 current rounding mode).
2456 "d_lrintl"
2458 From d_lrintl.U:
2459 This variable conditionally defines the "HAS_LRINTL" symbol, which
2461 indicates to the C program that the lrintl() routine is available
2462 to return the integral value closest to a long double (according to
2463 the current rounding mode).
2464 "d_lround"
2466 From d_lround.U:
2467 This variable conditionally defines the "HAS_LROUND" symbol, which
2469 indicates to the C program that the lround() routine is available
2470 to return the integral value nearest to x.
2471 "d_lroundl"
2473 From d_lroundl.U:
2474 This variable conditionally defines the "HAS_LROUNDL" symbol, which
2476 indicates to the C program that the lroundl() routine is available
2477 to return the integral value nearest to x away from zero.
2478 "d_lseekproto"
2480 From d_lseekproto.U:
2481 This variable conditionally defines the "HAS_LSEEK_PROTO" symbol,
2483 which indicates to the C program that the system provides a
2484 prototype for the lseek() function. Otherwise, it is up to the
2485 program to supply one.
2486 "d_lstat"
2488 From d_lstat.U:
2489 This variable conditionally defines "HAS_LSTAT" if lstat() is
2491 available to do file stats on symbolic links.
2492 "d_madvise"
2494 From d_madvise.U:
2495 This variable conditionally defines "HAS_MADVISE" if madvise() is
2497 available to map a file into memory.
2498 "d_malloc_good_size"
2500 From d_malloc_size.U:
2501 This symbol, if defined, indicates that the malloc_good_size
2503 routine is available for use.
2504 "d_malloc_size"
2506 From d_malloc_size.U:
2507 This symbol, if defined, indicates that the malloc_size routine is
2509 available for use.
2510 "d_mblen"
2512 From d_mblen.U:
2513 This variable conditionally defines the "HAS_MBLEN" symbol, which
2515 indicates to the C program that the mblen() routine is available to
2516 find the number of bytes in a multibye character.
2517 "d_mbrlen"
2519 From d_mbrlen.U:
2520 This variable conditionally defines the "HAS_MBRLEN" symbol if the
2522 mbrlen() routine is available to be used to get the length of
2523 multi-byte character strings.
2524 "d_mbrtowc"
2526 From d_mbrtowc.U:
2527 This variable conditionally defines the "HAS_MBRTOWC" symbol if the
2529 mbrtowc() routine is available to be used to convert a multi-byte
2530 character into a wide character.
2531 "d_mbstowcs"
2533 From d_mbstowcs.U:
2534 This variable conditionally defines the "HAS_MBSTOWCS" symbol,
2536 which indicates to the C program that the mbstowcs() routine is
2537 available to convert a multibyte string into a wide character
2538 string.
2539 "d_mbtowc"
2541 From d_mbtowc.U:
2542 This variable conditionally defines the "HAS_MBTOWC" symbol, which
2544 indicates to the C program that the mbtowc() routine is available
2545 to convert multibyte to a wide character.
2546 "d_memmem"
2548 From d_memmem.U:
2549 This variable conditionally defines the "HAS_MEMMEM" symbol, which
2551 indicates to the C program that the memmem() routine is available
2552 to return a pointer to the start of the first occurance of a
2553 substring in a memory area (or "NULL" if not found).
2554 "d_memrchr"
2556 From d_memrchr.U:
2557 This variable conditionally defines the "HAS_MEMRCHR" symbol, which
2559 indicates to the C program that the memrchr() routine is available
2560 to return a pointer to the last occurrence of a byte in a memory
2561 area (or "NULL" if not found).
2562 "d_mkdir"
2564 From d_mkdir.U:
2565 This variable conditionally defines the "HAS_MKDIR" symbol, which
2567 indicates to the C program that the mkdir() routine is available to
2568 create directories..
2569 "d_mkdtemp"
2571 From d_mkdtemp.U:
2572 This variable conditionally defines the "HAS_MKDTEMP" symbol, which
2574 indicates to the C program that the mkdtemp() routine is available
2575 to exclusively create a uniquely named temporary directory.
2576 "d_mkfifo"
2578 From d_mkfifo.U:
2579 This variable conditionally defines the "HAS_MKFIFO" symbol, which
2581 indicates to the C program that the mkfifo() routine is available.
2582 "d_mkostemp"
2584 From d_mkostemp.U:
2585 This variable conditionally defines "HAS_MKOSTEMP" if mkostemp() is
2587 available to exclusively create and open a uniquely named (with a
2588 suffix) temporary file.
2589 "d_mkstemp"
2591 From d_mkstemp.U:
2592 This variable conditionally defines the "HAS_MKSTEMP" symbol, which
2594 indicates to the C program that the mkstemp() routine is available
2595 to exclusively create and open a uniquely named temporary file.
2596 "d_mkstemps"
2598 From d_mkstemps.U:
2599 This variable conditionally defines the "HAS_MKSTEMPS" symbol,
2601 which indicates to the C program that the mkstemps() routine is
2602 available to exclusively create and open a uniquely named (with a
2603 suffix) temporary file.
2604 "d_mktime"
2606 From d_mktime.U:
2607 This variable conditionally defines the "HAS_MKTIME" symbol, which
2609 indicates to the C program that the mktime() routine is available.
2610 "d_mktime64"
2612 From d_timefuncs64.U:
2613 This variable conditionally defines the HAS_MKTIME64 symbol, which
2615 indicates to the C program that the mktime64 () routine is
2616 available.
2617 "d_mmap"
2619 From d_mmap.U:
2620 This variable conditionally defines "HAS_MMAP" if mmap() is
2622 available to map a file into memory.
2623 "d_modfl"
2625 From d_modfl.U:
2626 This variable conditionally defines the "HAS_MODFL" symbol, which
2628 indicates to the C program that the modfl() routine is available.
2629 "d_modflproto"
2631 From d_modfl.U:
2632 This symbol, if defined, indicates that the system provides a
2634 prototype for the modfl() function. Otherwise, it is up to the
2635 program to supply one. C99 says it should be long double
2636 modfl(long double, long double *);
2637 "d_mprotect"
2639 From d_mprotect.U:
2640 This variable conditionally defines "HAS_MPROTECT" if mprotect() is
2642 available to modify the access protection of a memory mapped file.
2643 "d_msg"
2645 From d_msg.U:
2646 This variable conditionally defines the "HAS_MSG" symbol, which
2648 indicates that the entire msg*(2) library is present.
2649 "d_msg_ctrunc"
2651 From d_socket.U:
2652 This variable conditionally defines the "HAS_MSG_CTRUNC" symbol,
2654 which indicates that the "MSG_CTRUNC" is available. #ifdef is not
2655 enough because it may be an enum, glibc has been known to do this.
2656 "d_msg_dontroute"
2658 From d_socket.U:
2659 This variable conditionally defines the "HAS_MSG_DONTROUTE" symbol,
2661 which indicates that the "MSG_DONTROUTE" is available. #ifdef is
2662 not enough because it may be an enum, glibc has been known to do
2663 this.
2664 "d_msg_oob"
2666 From d_socket.U:
2667 This variable conditionally defines the "HAS_MSG_OOB" symbol, which
2669 indicates that the "MSG_OOB" is available. #ifdef is not enough
2670 because it may be an enum, glibc has been known to do this.
2671 "d_msg_peek"
2673 From d_socket.U:
2674 This variable conditionally defines the "HAS_MSG_PEEK" symbol,
2676 which indicates that the "MSG_PEEK" is available. #ifdef is not
2677 enough because it may be an enum, glibc has been known to do this.
2678 "d_msg_proxy"
2680 From d_socket.U:
2681 This variable conditionally defines the "HAS_MSG_PROXY" symbol,
2683 which indicates that the "MSG_PROXY" is available. #ifdef is not
2684 enough because it may be an enum, glibc has been known to do this.
2685 "d_msgctl"
2687 From d_msgctl.U:
2688 This variable conditionally defines the "HAS_MSGCTL" symbol, which
2690 indicates to the C program that the msgctl() routine is available.
2691 "d_msgget"
2693 From d_msgget.U:
2694 This variable conditionally defines the "HAS_MSGGET" symbol, which
2696 indicates to the C program that the msgget() routine is available.
2697 "d_msghdr_s"
2699 From d_msghdr_s.U:
2700 This variable conditionally defines the "HAS_STRUCT_MSGHDR" symbol,
2702 which indicates that the struct msghdr is supported.
2703 "d_msgrcv"
2705 From d_msgrcv.U:
2706 This variable conditionally defines the "HAS_MSGRCV" symbol, which
2708 indicates to the C program that the msgrcv() routine is available.
2709 "d_msgsnd"
2711 From d_msgsnd.U:
2712 This variable conditionally defines the "HAS_MSGSND" symbol, which
2714 indicates to the C program that the msgsnd() routine is available.
2715 "d_msync"
2717 From d_msync.U:
2718 This variable conditionally defines "HAS_MSYNC" if msync() is
2720 available to synchronize a mapped file.
2721 "d_munmap"
2723 From d_munmap.U:
2724 This variable conditionally defines "HAS_MUNMAP" if munmap() is
2726 available to unmap a region mapped by mmap().
2727 "d_mymalloc"
2729 From mallocsrc.U:
2730 This variable conditionally defines "MYMALLOC" in case other parts
2732 of the source want to take special action if "MYMALLOC" is used.
2733 This may include different sorts of profiling or error detection.
2734 "d_nan"
2736 From d_nan.U:
2737 This variable conditionally defines "HAS_NAN" if nan() is available
2739 to generate NaN.
2740 "d_nanosleep"
2742 From d_nanosleep.U:
2743 This variable conditionally defines "HAS_NANOSLEEP" if nanosleep()
2745 is available to sleep with 1E-9 sec accuracy.
2746 "d_ndbm"
2748 From i_ndbm.U:
2749 This variable conditionally defines the "HAS_NDBM" symbol, which
2751 indicates that both the ndbm.h include file and an appropriate ndbm
2752 library exist. Consult the different i_*ndbm variables to find out
2753 the actual include location. Sometimes, a system has the header
2754 file but not the library. This variable will only be set if the
2755 system has both.
2756 "d_ndbm_h_uses_prototypes"
2758 From i_ndbm.U:
2759 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
2761 symbol, which indicates that the ndbm.h include file uses real
2762 "ANSI" C prototypes instead of K&R style function declarations. K&R
2763 style declarations are unsupported in C++, so the include file
2764 requires special handling when using a C++ compiler and this
2765 variable is undefined. Consult the different
2766 d_*ndbm_h_uses_prototypes variables to get the same information for
2767 alternative ndbm.h include files.
2768 "d_nearbyint"
2770 From d_nearbyint.U:
2771 This variable conditionally defines "HAS_NEARBYINT" if nearbyint()
2773 is available to return the integral value closest to (according to
2774 the current rounding mode) to x.
2775 "d_newlocale"
2777 From d_newlocale.U:
2778 This variable conditionally defines the "HAS_NEWLOCALE" symbol,
2780 which indicates to the C program that the newlocale() routine is
2781 available to return a new locale object or modify an existing
2782 locale object.
2783 "d_nextafter"
2785 From d_nextafter.U:
2786 This variable conditionally defines "HAS_NEXTAFTER" if nextafter()
2788 is available to return the next machine representable double from x
2789 in direction y.
2790 "d_nexttoward"
2792 From d_nexttoward.U:
2793 This variable conditionally defines "HAS_NEXTTOWARD" if
2795 nexttoward() is available to return the next machine representable
2796 long double from x in direction y.
2797 "d_nice"
2799 From d_nice.U:
2800 This variable conditionally defines the "HAS_NICE" symbol, which
2802 indicates to the C program that the nice() routine is available.
2803 "d_nl_langinfo"
2805 From d_nl_langinfo.U:
2806 This variable conditionally defines the "HAS_NL_LANGINFO" symbol,
2808 which indicates to the C program that the nl_langinfo() routine is
2809 available.
2810 "d_nv_preserves_uv"
2812 From perlxv.U:
2813 This variable indicates whether a variable of type nvtype can
2815 preserve all the bits a variable of type uvtype.
2816 "d_nv_zero_is_allbits_zero"
2818 From perlxv.U:
2819 This variable indicates whether a variable of type nvtype stores
2821 0.0 in memory as all bits zero.
2822 "d_off64_t"
2824 From d_off64_t.U:
2825 This symbol will be defined if the C compiler supports off64_t.
2827 "d_old_pthread_create_joinable"
2829 From d_pthrattrj.U:
2830 This variable conditionally defines pthread_create_joinable. undef
2832 if pthread.h defines "PTHREAD_CREATE_JOINABLE".
2833 "d_oldpthreads"
2835 From usethreads.U:
2836 This variable conditionally defines the "OLD_PTHREADS_API" symbol,
2838 and indicates that Perl should be built to use the old draft
2839 "POSIX" threads "API". This is only potentially meaningful if
2840 usethreads is set.
2841 "d_oldsock"
2843 From d_socket.U:
2844 This variable conditionally defines the "OLDSOCKET" symbol, which
2846 indicates that the "BSD" socket interface is based on 4.1c and not
2847 4.2.
2848 "d_open3"
2850 From d_open3.U:
2851 This variable conditionally defines the HAS_OPEN3 manifest
2853 constant, which indicates to the C program that the 3 argument
2854 version of the open(2) function is available.
2855 "d_openat"
2857 From d_fsat.U:
2858 This variable conditionally defines the "HAS_OPENAT" symbol, which
2860 indicates the "POSIX" openat() function is available.
2861 "d_pathconf"
2863 From d_pathconf.U:
2864 This variable conditionally defines the "HAS_PATHCONF" symbol,
2866 which indicates to the C program that the pathconf() routine is
2867 available to determine file-system related limits and options
2868 associated with a given filename.
2869 "d_pause"
2871 From d_pause.U:
2872 This variable conditionally defines the "HAS_PAUSE" symbol, which
2874 indicates to the C program that the pause() routine is available to
2875 suspend a process until a signal is received.
2876 "d_perl_otherlibdirs"
2878 From otherlibdirs.U:
2879 This variable conditionally defines "PERL_OTHERLIBDIRS", which
2881 contains a colon-separated set of paths for the perl binary to
2882 include in @"INC". See also otherlibdirs.
2883 "d_phostname"
2885 From d_gethname.U:
2886 This variable conditionally defines the "HAS_PHOSTNAME" symbol,
2888 which contains the shell command which, when fed to popen(), may be
2889 used to derive the host name.
2890 "d_pipe"
2892 From d_pipe.U:
2893 This variable conditionally defines the "HAS_PIPE" symbol, which
2895 indicates to the C program that the pipe() routine is available to
2896 create an inter-process channel.
2897 "d_pipe2"
2899 From d_pipe2.U:
2900 This variable conditionally defines the HAS_PIPE2 symbol, which
2902 indicates to the C program that the pipe2() routine is available to
2903 create an inter-process channel.
2904 "d_poll"
2906 From d_poll.U:
2907 This variable conditionally defines the "HAS_POLL" symbol, which
2909 indicates to the C program that the poll() routine is available to
2910 poll active file descriptors.
2911 "d_portable"
2913 From d_portable.U:
2914 This variable conditionally defines the "PORTABLE" symbol, which
2916 indicates to the C program that it should not assume that it is
2917 running on the machine it was compiled on.
2918 "d_prctl"
2920 From d_prctl.U:
2921 This variable conditionally defines the "HAS_PRCTL" symbol, which
2923 indicates to the C program that the prctl() routine is available.
2924 Note that there are at least two prctl variants: Linux and Irix.
2925 While they are somewhat similar, they are incompatible.
2926 "d_prctl_set_name"
2928 From d_prctl.U:
2929 This variable conditionally defines the "HAS_PRCTL_SET_NAME"
2931 symbol, which indicates to the C program that the prctl() routine
2932 supports the "PR_SET_NAME" option.
2933 "d_PRId64"
2935 From quadfio.U:
2936 This variable conditionally defines the PERL_PRId64 symbol, which
2938 indicates that stdio has a symbol to print 64-bit decimal numbers.
2939 "d_PRIeldbl"
2941 From longdblfio.U:
2942 This variable conditionally defines the PERL_PRIfldbl symbol, which
2944 indicates that stdio has a symbol to print long doubles.
2945 "d_PRIEUldbl"
2947 From longdblfio.U:
2948 This variable conditionally defines the PERL_PRIfldbl symbol, which
2950 indicates that stdio has a symbol to print long doubles. The "U"
2951 in the name is to separate this from d_PRIeldbl so that even case-
2952 blind systems can see the difference.
2953 "d_PRIfldbl"
2955 From longdblfio.U:
2956 This variable conditionally defines the PERL_PRIfldbl symbol, which
2958 indicates that stdio has a symbol to print long doubles.
2959 "d_PRIFUldbl"
2961 From longdblfio.U:
2962 This variable conditionally defines the PERL_PRIfldbl symbol, which
2964 indicates that stdio has a symbol to print long doubles. The "U"
2965 in the name is to separate this from d_PRIfldbl so that even case-
2966 blind systems can see the difference.
2967 "d_PRIgldbl"
2969 From longdblfio.U:
2970 This variable conditionally defines the PERL_PRIfldbl symbol, which
2972 indicates that stdio has a symbol to print long doubles.
2973 "d_PRIGUldbl"
2975 From longdblfio.U:
2976 This variable conditionally defines the PERL_PRIfldbl symbol, which
2978 indicates that stdio has a symbol to print long doubles. The "U"
2979 in the name is to separate this from d_PRIgldbl so that even case-
2980 blind systems can see the difference.
2981 "d_PRIi64"
2983 From quadfio.U:
2984 This variable conditionally defines the PERL_PRIi64 symbol, which
2986 indicates that stdio has a symbol to print 64-bit decimal numbers.
2987 "d_printf_format_null"
2989 From d_attribut.U:
2990 This variable conditionally defines "PRINTF_FORMAT_NULL_OK", which
2992 indicates the C compiler allows printf-like formats to be null.
2993 "d_PRIo64"
2995 From quadfio.U:
2996 This variable conditionally defines the PERL_PRIo64 symbol, which
2998 indicates that stdio has a symbol to print 64-bit octal numbers.
2999 "d_PRIu64"
3001 From quadfio.U:
3002 This variable conditionally defines the PERL_PRIu64 symbol, which
3004 indicates that stdio has a symbol to print 64-bit unsigned decimal
3005 numbers.
3006 "d_PRIx64"
3008 From quadfio.U:
3009 This variable conditionally defines the PERL_PRIx64 symbol, which
3011 indicates that stdio has a symbol to print 64-bit hexadecimal
3012 numbers.
3013 "d_PRIXU64"
3015 From quadfio.U:
3016 This variable conditionally defines the PERL_PRIXU64 symbol, which
3018 indicates that stdio has a symbol to print 64-bit hExADECimAl
3019 numbers. The "U" in the name is to separate this from d_PRIx64 so
3020 that even case-blind systems can see the difference.
3021 "d_procselfexe"
3023 From d_procselfexe.U:
3024 Defined if $procselfexe is symlink to the absolute pathname of the
3026 executing program.
3027 "d_pseudofork"
3029 From d_vfork.U:
3030 This variable conditionally defines the "HAS_PSEUDOFORK" symbol,
3032 which indicates that an emulation of the fork routine is available.
3033 "d_pthread_atfork"
3035 From d_pthread_atfork.U:
3036 This variable conditionally defines the "HAS_PTHREAD_ATFORK"
3038 symbol, which indicates to the C program that the pthread_atfork()
3039 routine is available.
3040 "d_pthread_attr_setscope"
3042 From d_pthread_attr_ss.U:
3043 This variable conditionally defines "HAS_PTHREAD_ATTR_SETSCOPE" if
3045 pthread_attr_setscope() is available to set the contention scope
3046 attribute of a thread attribute object.
3047 "d_pthread_yield"
3049 From d_pthread_y.U:
3050 This variable conditionally defines the "HAS_PTHREAD_YIELD" symbol
3052 if the pthread_yield routine is available to yield the execution of
3053 the current thread.
3054 "d_ptrdiff_t"
3056 From d_ptrdiff_t.U:
3057 This symbol will be defined if the C compiler supports ptrdiff_t.
3059 "d_pwage"
3061 From i_pwd.U:
3062 This variable conditionally defines "PWAGE", which indicates that
3064 struct passwd contains pw_age.
3065 "d_pwchange"
3067 From i_pwd.U:
3068 This variable conditionally defines "PWCHANGE", which indicates
3070 that struct passwd contains pw_change.
3071 "d_pwclass"
3073 From i_pwd.U:
3074 This variable conditionally defines "PWCLASS", which indicates that
3076 struct passwd contains pw_class.
3077 "d_pwcomment"
3079 From i_pwd.U:
3080 This variable conditionally defines "PWCOMMENT", which indicates
3082 that struct passwd contains pw_comment.
3083 "d_pwexpire"
3085 From i_pwd.U:
3086 This variable conditionally defines "PWEXPIRE", which indicates
3088 that struct passwd contains pw_expire.
3089 "d_pwgecos"
3091 From i_pwd.U:
3092 This variable conditionally defines "PWGECOS", which indicates that
3094 struct passwd contains pw_gecos.
3095 "d_pwpasswd"
3097 From i_pwd.U:
3098 This variable conditionally defines "PWPASSWD", which indicates
3100 that struct passwd contains pw_passwd.
3101 "d_pwquota"
3103 From i_pwd.U:
3104 This variable conditionally defines "PWQUOTA", which indicates that
3106 struct passwd contains pw_quota.
3107 "d_qgcvt"
3109 From d_qgcvt.U:
3110 This variable conditionally defines the "HAS_QGCVT" symbol, which
3112 indicates to the C program that the qgcvt() routine is available.
3113 "d_quad"
3115 From quadtype.U:
3116 This variable, if defined, tells that there's a 64-bit integer
3118 type, quadtype.
3119 "d_querylocale"
3121 From d_newlocale.U:
3122 This variable conditionally defines the "HAS_QUERYLOCALE" symbol,
3124 which indicates to the C program that the querylocale() routine is
3125 available to return the name of the locale for a category mask.
3126 "d_random_r"
3128 From d_random_r.U:
3129 This variable conditionally defines the "HAS_RANDOM_R" symbol,
3131 which indicates to the C program that the random_r() routine is
3132 available.
3133 "d_re_comp"
3135 From d_regcmp.U:
3136 This variable conditionally defines the "HAS_RECOMP" symbol, which
3138 indicates to the C program that the re_comp() routine is available
3139 for regular patern matching (usally on "BSD"). If so, it is likely
3140 that re_exec() exists.
3141 "d_readdir"
3143 From d_readdir.U:
3144 This variable conditionally defines "HAS_READDIR" if readdir() is
3146 available to read directory entries.
3147 "d_readdir64_r"
3149 From d_readdir64_r.U:
3150 This variable conditionally defines the HAS_READDIR64_R symbol,
3152 which indicates to the C program that the readdir64_r() routine is
3153 available.
3154 "d_readdir_r"
3156 From d_readdir_r.U:
3157 This variable conditionally defines the "HAS_READDIR_R" symbol,
3159 which indicates to the C program that the readdir_r() routine is
3160 available.
3161 "d_readlink"
3163 From d_readlink.U:
3164 This variable conditionally defines the "HAS_READLINK" symbol,
3166 which indicates to the C program that the readlink() routine is
3167 available to read the value of a symbolic link.
3168 "d_readv"
3170 From d_readv.U:
3171 This variable conditionally defines the "HAS_READV" symbol, which
3173 indicates to the C program that the readv() routine is available.
3174 "d_recvmsg"
3176 From d_recvmsg.U:
3177 This variable conditionally defines the "HAS_RECVMSG" symbol, which
3179 indicates to the C program that the recvmsg() routine is available.
3180 "d_regcmp"
3182 From d_regcmp.U:
3183 This variable conditionally defines the "HAS_REGCMP" symbol, which
3185 indicates to the C program that the regcmp() routine is available
3186 for regular patern matching (usally on System V).
3187 "d_regcomp"
3189 From d_regcmp.U:
3190 This variable conditionally defines the "HAS_REGCOMP" symbol, which
3192 indicates to the C program that the regcomp() routine is available
3193 for regular patern matching (usally on POSIX.2 conforming systems).
3194 "d_remainder"
3196 From d_remainder.U:
3197 This variable conditionally defines the "HAS_REMAINDER" symbol,
3199 which indicates to the C program that the remainder() routine is
3200 available.
3201 "d_remquo"
3203 From d_remquo.U:
3204 This variable conditionally defines the "HAS_REMQUO" symbol, which
3206 indicates to the C program that the remquo() routine is available.
3207 "d_rename"
3209 From d_rename.U:
3210 This variable conditionally defines the "HAS_RENAME" symbol, which
3212 indicates to the C program that the rename() routine is available
3213 to rename files.
3214 "d_renameat"
3216 From d_fsat.U:
3217 This variable conditionally defines the "HAS_RENAMEAT" symbol,
3219 which indicates the "POSIX" renameat() function is available.
3220 "d_rewinddir"
3222 From d_readdir.U:
3223 This variable conditionally defines "HAS_REWINDDIR" if rewinddir()
3225 is available.
3226 "d_rint"
3228 From d_rint.U:
3229 This variable conditionally defines the "HAS_RINT" symbol, which
3231 indicates to the C program that the rint() routine is available.
3232 "d_rmdir"
3234 From d_rmdir.U:
3235 This variable conditionally defines "HAS_RMDIR" if rmdir() is
3237 available to remove directories.
3238 "d_round"
3240 From d_round.U:
3241 This variable conditionally defines the "HAS_ROUND" symbol, which
3243 indicates to the C program that the round() routine is available.
3244 "d_sbrkproto"
3246 From d_sbrkproto.U:
3247 This variable conditionally defines the "HAS_SBRK_PROTO" symbol,
3249 which indicates to the C program that the system provides a
3250 prototype for the sbrk() function. Otherwise, it is up to the
3251 program to supply one.
3252 "d_scalbn"
3254 From d_scalbn.U:
3255 This variable conditionally defines the "HAS_SCALBN" symbol, which
3257 indicates to the C program that the scalbn() routine is available.
3258 "d_scalbnl"
3260 From d_scalbnl.U:
3261 This variable conditionally defines the "HAS_SCALBNL" symbol, which
3263 indicates to the C program that the scalbnl() routine is available.
3264 If ilogbl is also present we can emulate frexpl.
3265 "d_sched_yield"
3267 From d_pthread_y.U:
3268 This variable conditionally defines the "HAS_SCHED_YIELD" symbol if
3270 the sched_yield routine is available to yield the execution of the
3271 current thread.
3272 "d_scm_rights"
3274 From d_socket.U:
3275 This variable conditionally defines the "HAS_SCM_RIGHTS" symbol,
3277 which indicates that the "SCM_RIGHTS" is available. #ifdef is not
3278 enough because it may be an enum, glibc has been known to do this.
3279 "d_SCNfldbl"
3281 From longdblfio.U:
3282 This variable conditionally defines the PERL_PRIfldbl symbol, which
3284 indicates that stdio has a symbol to scan long doubles.
3285 "d_seekdir"
3287 From d_readdir.U:
3288 This variable conditionally defines "HAS_SEEKDIR" if seekdir() is
3290 available.
3291 "d_select"
3293 From d_select.U:
3294 This variable conditionally defines "HAS_SELECT" if select() is
3296 available to select active file descriptors. A <sys/time.h>
3297 inclusion may be necessary for the timeout field.
3298 "d_sem"
3300 From d_sem.U:
3301 This variable conditionally defines the "HAS_SEM" symbol, which
3303 indicates that the entire sem*(2) library is present.
3304 "d_semctl"
3306 From d_semctl.U:
3307 This variable conditionally defines the "HAS_SEMCTL" symbol, which
3309 indicates to the C program that the semctl() routine is available.
3310 "d_semctl_semid_ds"
3312 From d_union_semun.U:
3313 This variable conditionally defines "USE_SEMCTL_SEMID_DS", which
3315 indicates that struct semid_ds * is to be used for semctl
3316 "IPC_STAT".
3317 "d_semctl_semun"
3319 From d_union_semun.U:
3320 This variable conditionally defines "USE_SEMCTL_SEMUN", which
3322 indicates that union semun is to be used for semctl "IPC_STAT".
3323 "d_semget"
3325 From d_semget.U:
3326 This variable conditionally defines the "HAS_SEMGET" symbol, which
3328 indicates to the C program that the semget() routine is available.
3329 "d_semop"
3331 From d_semop.U:
3332 This variable conditionally defines the "HAS_SEMOP" symbol, which
3334 indicates to the C program that the semop() routine is available.
3335 "d_sendmsg"
3337 From d_sendmsg.U:
3338 This variable conditionally defines the "HAS_SENDMSG" symbol, which
3340 indicates to the C program that the sendmsg() routine is available.
3341 "d_setegid"
3343 From d_setegid.U:
3344 This variable conditionally defines the "HAS_SETEGID" symbol, which
3346 indicates to the C program that the setegid() routine is available
3347 to change the effective gid of the current program.
3348 "d_seteuid"
3350 From d_seteuid.U:
3351 This variable conditionally defines the "HAS_SETEUID" symbol, which
3353 indicates to the C program that the seteuid() routine is available
3354 to change the effective uid of the current program.
3355 "d_setgrent"
3357 From d_setgrent.U:
3358 This variable conditionally defines the "HAS_SETGRENT" symbol,
3360 which indicates to the C program that the setgrent() routine is
3361 available for initializing sequential access to the group database.
3362 "d_setgrent_r"
3364 From d_setgrent_r.U:
3365 This variable conditionally defines the "HAS_SETGRENT_R" symbol,
3367 which indicates to the C program that the setgrent_r() routine is
3368 available.
3369 "d_setgrps"
3371 From d_setgrps.U:
3372 This variable conditionally defines the "HAS_SETGROUPS" symbol,
3374 which indicates to the C program that the setgroups() routine is
3375 available to set the list of process groups.
3376 "d_sethent"
3378 From d_sethent.U:
3379 This variable conditionally defines "HAS_SETHOSTENT" if
3381 sethostent() is available.
3382 "d_sethostent_r"
3384 From d_sethostent_r.U:
3385 This variable conditionally defines the "HAS_SETHOSTENT_R" symbol,
3387 which indicates to the C program that the sethostent_r() routine is
3388 available.
3389 "d_setitimer"
3391 From d_setitimer.U:
3392 This variable conditionally defines the "HAS_SETITIMER" symbol,
3394 which indicates to the C program that the setitimer() routine is
3395 available.
3396 "d_setlinebuf"
3398 From d_setlnbuf.U:
3399 This variable conditionally defines the "HAS_SETLINEBUF" symbol,
3401 which indicates to the C program that the setlinebuf() routine is
3402 available to change stderr or stdout from block-buffered or
3403 unbuffered to a line-buffered mode.
3404 "d_setlocale"
3406 From d_setlocale.U:
3407 This variable conditionally defines "HAS_SETLOCALE" if setlocale()
3409 is available to handle locale-specific ctype implementations.
3410 "d_setlocale_r"
3412 From d_setlocale_r.U:
3413 This variable conditionally defines the "HAS_SETLOCALE_R" symbol,
3415 which indicates to the C program that the setlocale_r() routine is
3416 available.
3417 "d_setnent"
3419 From d_setnent.U:
3420 This variable conditionally defines "HAS_SETNETENT" if setnetent()
3422 is available.
3423 "d_setnetent_r"
3425 From d_setnetent_r.U:
3426 This variable conditionally defines the "HAS_SETNETENT_R" symbol,
3428 which indicates to the C program that the setnetent_r() routine is
3429 available.
3430 "d_setpent"
3432 From d_setpent.U:
3433 This variable conditionally defines "HAS_SETPROTOENT" if
3435 setprotoent() is available.
3436 "d_setpgid"
3438 From d_setpgid.U:
3439 This variable conditionally defines the "HAS_SETPGID" symbol if the
3441 setpgid(pid, gpid) function is available to set process group "ID".
3442 "d_setpgrp"
3444 From d_setpgrp.U:
3445 This variable conditionally defines "HAS_SETPGRP" if setpgrp() is
3447 available to set the current process group.
3448 "d_setpgrp2"
3450 From d_setpgrp2.U:
3451 This variable conditionally defines the HAS_SETPGRP2 symbol, which
3453 indicates to the C program that the setpgrp2() (as in DG/"UX")
3454 routine is available to set the current process group.
3455 "d_setprior"
3457 From d_setprior.U:
3458 This variable conditionally defines "HAS_SETPRIORITY" if
3460 setpriority() is available to set a process's priority.
3461 "d_setproctitle"
3463 From d_setproctitle.U:
3464 This variable conditionally defines the "HAS_SETPROCTITLE" symbol,
3466 which indicates to the C program that the setproctitle() routine is
3467 available.
3468 "d_setprotoent_r"
3470 From d_setprotoent_r.U:
3471 This variable conditionally defines the "HAS_SETPROTOENT_R" symbol,
3473 which indicates to the C program that the setprotoent_r() routine
3474 is available.
3475 "d_setpwent"
3477 From d_setpwent.U:
3478 This variable conditionally defines the "HAS_SETPWENT" symbol,
3480 which indicates to the C program that the setpwent() routine is
3481 available for initializing sequential access to the passwd
3482 database.
3483 "d_setpwent_r"
3485 From d_setpwent_r.U:
3486 This variable conditionally defines the "HAS_SETPWENT_R" symbol,
3488 which indicates to the C program that the setpwent_r() routine is
3489 available.
3490 "d_setregid"
3492 From d_setregid.U:
3493 This variable conditionally defines "HAS_SETREGID" if setregid() is
3495 available to change the real and effective gid of the current
3496 process.
3497 "d_setresgid"
3499 From d_setregid.U:
3500 This variable conditionally defines "HAS_SETRESGID" if setresgid()
3502 is available to change the real, effective and saved gid of the
3503 current process.
3504 "d_setresuid"
3506 From d_setreuid.U:
3507 This variable conditionally defines "HAS_SETREUID" if setresuid()
3509 is available to change the real, effective and saved uid of the
3510 current process.
3511 "d_setreuid"
3513 From d_setreuid.U:
3514 This variable conditionally defines "HAS_SETREUID" if setreuid() is
3516 available to change the real and effective uid of the current
3517 process.
3518 "d_setrgid"
3520 From d_setrgid.U:
3521 This variable conditionally defines the "HAS_SETRGID" symbol, which
3523 indicates to the C program that the setrgid() routine is available
3524 to change the real gid of the current program.
3525 "d_setruid"
3527 From d_setruid.U:
3528 This variable conditionally defines the "HAS_SETRUID" symbol, which
3530 indicates to the C program that the setruid() routine is available
3531 to change the real uid of the current program.
3532 "d_setsent"
3534 From d_setsent.U:
3535 This variable conditionally defines "HAS_SETSERVENT" if
3537 setservent() is available.
3538 "d_setservent_r"
3540 From d_setservent_r.U:
3541 This variable conditionally defines the "HAS_SETSERVENT_R" symbol,
3543 which indicates to the C program that the setservent_r() routine is
3544 available.
3545 "d_setsid"
3547 From d_setsid.U:
3548 This variable conditionally defines "HAS_SETSID" if setsid() is
3550 available to set the process group "ID".
3551 "d_setvbuf"
3553 From d_setvbuf.U:
3554 This variable conditionally defines the "HAS_SETVBUF" symbol, which
3556 indicates to the C program that the setvbuf() routine is available
3557 to change buffering on an open stdio stream.
3558 "d_shm"
3560 From d_shm.U:
3561 This variable conditionally defines the "HAS_SHM" symbol, which
3563 indicates that the entire shm*(2) library is present.
3564 "d_shmat"
3566 From d_shmat.U:
3567 This variable conditionally defines the "HAS_SHMAT" symbol, which
3569 indicates to the C program that the shmat() routine is available.
3570 "d_shmatprototype"
3572 From d_shmat.U:
3573 This variable conditionally defines the "HAS_SHMAT_PROTOTYPE"
3575 symbol, which indicates that sys/shm.h has a prototype for shmat.
3576 "d_shmctl"
3578 From d_shmctl.U:
3579 This variable conditionally defines the "HAS_SHMCTL" symbol, which
3581 indicates to the C program that the shmctl() routine is available.
3582 "d_shmdt"
3584 From d_shmdt.U:
3585 This variable conditionally defines the "HAS_SHMDT" symbol, which
3587 indicates to the C program that the shmdt() routine is available.
3588 "d_shmget"
3590 From d_shmget.U:
3591 This variable conditionally defines the "HAS_SHMGET" symbol, which
3593 indicates to the C program that the shmget() routine is available.
3594 "d_sigaction"
3596 From d_sigaction.U:
3597 This variable conditionally defines the "HAS_SIGACTION" symbol,
3599 which indicates that the Vr4 sigaction() routine is available.
3600 "d_siginfo_si_addr"
3602 From d_siginfo_si.U:
3603 This variable conditionally defines the "HAS_SIGINFO_SI_ADDR"
3605 symbol, which indicates that the siginfo_t struct has the si_addr
3606 member.
3607 "d_siginfo_si_band"
3609 From d_siginfo_si.U:
3610 This variable conditionally defines the "HAS_SIGINFO_SI_BAND"
3612 symbol, which indicates that the siginfo_t struct has the si_band
3613 member.
3614 "d_siginfo_si_errno"
3616 From d_siginfo_si.U:
3617 This variable conditionally defines the "HAS_SIGINFO_SI_ERRNO"
3619 symbol, which indicates that the siginfo_t struct has the si_errno
3620 member.
3621 "d_siginfo_si_fd"
3623 From d_siginfo_si.U:
3624 This variable conditionally defines the "HAS_SIGINFO_SI_FD" symbol,
3626 which indicates that the siginfo_t struct has the si_fd member.
3627 "d_siginfo_si_pid"
3629 From d_siginfo_si.U:
3630 This variable conditionally defines the "HAS_SIGINFO_SI_PID"
3632 symbol, which indicates that the siginfo_t struct has the si_pid
3633 member.
3634 "d_siginfo_si_status"
3636 From d_siginfo_si.U:
3637 This variable conditionally defines the "HAS_SIGINFO_SI_STATUS"
3639 symbol, which indicates that the siginfo_t struct has the si_status
3640 member.
3641 "d_siginfo_si_uid"
3643 From d_siginfo_si.U:
3644 This variable conditionally defines the "HAS_SIGINFO_SI_UID"
3646 symbol, which indicates that the siginfo_t struct has the si_uid
3647 member.
3648 "d_siginfo_si_value"
3650 From d_siginfo_si.U:
3651 This variable conditionally defines the "HAS_SIGINFO_SI_VALUE"
3653 symbol, which indicates that the siginfo_t struct has the si_value
3654 member.
3655 "d_signbit"
3657 From d_signbit.U:
3658 This variable conditionally defines the "HAS_SIGNBIT" symbol, which
3660 indicates to the C program that the signbit() routine is available
3661 and safe to use with perl's intern "NV" type.
3662 "d_sigprocmask"
3664 From d_sigprocmask.U:
3665 This variable conditionally defines "HAS_SIGPROCMASK" if
3667 sigprocmask() is available to examine or change the signal mask of
3668 the calling process.
3669 "d_sigsetjmp"
3671 From d_sigsetjmp.U:
3672 This variable conditionally defines the "HAS_SIGSETJMP" symbol,
3674 which indicates that the sigsetjmp() routine is available to call
3675 setjmp() and optionally save the process's signal mask.
3676 "d_sin6_scope_id"
3678 From d_socket.U:
3679 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol,
3681 which indicates that a struct sockaddr_in6 structure has the
3682 sin6_scope_id member.
3683 "d_sitearch"
3685 From sitearch.U:
3686 This variable conditionally defines "SITEARCH" to hold the pathname
3688 of architecture-dependent library files for $package. If $sitearch
3689 is the same as $archlib, then this is set to undef.
3690 "d_snprintf"
3692 From d_snprintf.U:
3693 This variable conditionally defines the "HAS_SNPRINTF" symbol,
3695 which indicates to the C program that the snprintf () library
3696 function is available.
3697 "d_sockaddr_in6"
3699 From d_socket.U:
3700 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol,
3702 which indicates the availability of a struct sockaddr_in6.
3703 "d_sockaddr_sa_len"
3705 From d_socket.U:
3706 This variable conditionally defines the "HAS_SOCKADDR_SA_LEN"
3708 symbol, which indicates that a struct sockaddr structure has the
3709 sa_len member.
3710 "d_sockatmark"
3712 From d_sockatmark.U:
3713 This variable conditionally defines the "HAS_SOCKATMARK" symbol,
3715 which indicates to the C program that the sockatmark() routine is
3716 available.
3717 "d_sockatmarkproto"
3719 From d_sockatmarkproto.U:
3720 This variable conditionally defines the "HAS_SOCKATMARK_PROTO"
3722 symbol, which indicates to the C program that the system provides a
3723 prototype for the sockatmark() function. Otherwise, it is up to
3724 the program to supply one.
3725 "d_socket"
3727 From d_socket.U:
3728 This variable conditionally defines "HAS_SOCKET", which indicates
3730 that the "BSD" socket interface is supported.
3731 "d_socklen_t"
3733 From d_socklen_t.U:
3734 This symbol will be defined if the C compiler supports socklen_t.
3736 "d_sockpair"
3738 From d_socket.U:
3739 This variable conditionally defines the "HAS_SOCKETPAIR" symbol,
3741 which indicates that the "BSD" socketpair() is supported.
3742 "d_socks5_init"
3744 From d_socks5_init.U:
3745 This variable conditionally defines the HAS_SOCKS5_INIT symbol,
3747 which indicates to the C program that the socks5_init() routine is
3748 available.
3749 "d_sqrtl"
3751 From d_sqrtl.U:
3752 This variable conditionally defines the "HAS_SQRTL" symbol, which
3754 indicates to the C program that the sqrtl() routine is available.
3755 "d_srand48_r"
3757 From d_srand48_r.U:
3758 This variable conditionally defines the HAS_SRAND48_R symbol, which
3760 indicates to the C program that the srand48_r() routine is
3761 available.
3762 "d_srandom_r"
3764 From d_srandom_r.U:
3765 This variable conditionally defines the "HAS_SRANDOM_R" symbol,
3767 which indicates to the C program that the srandom_r() routine is
3768 available.
3769 "d_sresgproto"
3771 From d_sresgproto.U:
3772 This variable conditionally defines the "HAS_SETRESGID_PROTO"
3774 symbol, which indicates to the C program that the system provides a
3775 prototype for the setresgid() function. Otherwise, it is up to the
3776 program to supply one.
3777 "d_sresuproto"
3779 From d_sresuproto.U:
3780 This variable conditionally defines the "HAS_SETRESUID_PROTO"
3782 symbol, which indicates to the C program that the system provides a
3783 prototype for the setresuid() function. Otherwise, it is up to the
3784 program to supply one.
3785 "d_stat"
3787 From d_stat.U:
3788 This variable conditionally defines "HAS_STAT" if stat() is
3790 available to get file status.
3791 "d_statblks"
3793 From d_statblks.U:
3794 This variable conditionally defines "USE_STAT_BLOCKS" if this
3796 system has a stat structure declaring st_blksize and st_blocks.
3797 "d_statfs_f_flags"
3799 From d_statfs_f_flags.U:
3800 This variable conditionally defines the "HAS_STRUCT_STATFS_F_FLAGS"
3802 symbol, which indicates to struct statfs from has f_flags member.
3803 This kind of struct statfs is coming from sys/mount.h ("BSD"), not
3804 from sys/statfs.h ("SYSV").
3805 "d_statfs_s"
3807 From d_statfs_s.U:
3808 This variable conditionally defines the "HAS_STRUCT_STATFS" symbol,
3810 which indicates that the struct statfs is supported.
3811 "d_static_inline"
3813 From d_static_inline.U:
3814 This variable conditionally defines the "HAS_STATIC_INLINE" symbol,
3816 which indicates that the C compiler supports C99-style static
3817 inline. That is, the function can't be called from another
3818 translation unit.
3819 "d_statvfs"
3821 From d_statvfs.U:
3822 This variable conditionally defines the "HAS_STATVFS" symbol, which
3824 indicates to the C program that the statvfs() routine is available.
3825 "d_stdio_cnt_lval"
3827 From d_stdstdio.U:
3828 This variable conditionally defines "STDIO_CNT_LVALUE" if the
3830 "FILE_cnt" macro can be used as an lvalue.
3831 "d_stdio_ptr_lval"
3833 From d_stdstdio.U:
3834 This variable conditionally defines "STDIO_PTR_LVALUE" if the
3836 "FILE_ptr" macro can be used as an lvalue.
3837 "d_stdio_ptr_lval_nochange_cnt"
3839 From d_stdstdio.U:
3840 This symbol is defined if using the "FILE_ptr" macro as an lvalue
3842 to increase the pointer by n leaves File_cnt(fp) unchanged.
3843 "d_stdio_ptr_lval_sets_cnt"
3845 From d_stdstdio.U:
3846 This symbol is defined if using the "FILE_ptr" macro as an lvalue
3848 to increase the pointer by n has the side effect of decreasing the
3849 value of File_cnt(fp) by n.
3850 "d_stdio_stream_array"
3852 From stdio_streams.U:
3853 This variable tells whether there is an array holding the stdio
3855 streams.
3856 "d_stdiobase"
3858 From d_stdstdio.U:
3859 This variable conditionally defines "USE_STDIO_BASE" if this system
3861 has a "FILE" structure declaring a usable _base field (or
3862 equivalent) in stdio.h.
3863 "d_stdstdio"
3865 From d_stdstdio.U:
3866 This variable conditionally defines "USE_STDIO_PTR" if this system
3868 has a "FILE" structure declaring usable _ptr and _cnt fields (or
3869 equivalent) in stdio.h.
3870 "d_strcoll"
3872 From d_strcoll.U:
3873 This variable conditionally defines "HAS_STRCOLL" if strcoll() is
3875 available to compare strings using collating information.
3876 "d_strerror_l"
3878 From d_strerror_l.U:
3879 This variable conditionally defines the "HAS_STRERROR_L" symbol,
3881 which indicates to the C program that the strerror_l() routine is
3882 available to return the error message for a given errno value in a
3883 particular locale (identified by a locale_t object).
3884 "d_strerror_r"
3886 From d_strerror_r.U:
3887 This variable conditionally defines the "HAS_STRERROR_R" symbol,
3889 which indicates to the C program that the strerror_r() routine is
3890 available.
3891 "d_strftime"
3893 From d_strftime.U:
3894 This variable conditionally defines the "HAS_STRFTIME" symbol,
3896 which indicates to the C program that the strftime() routine is
3897 available.
3898 "d_strlcat"
3900 From d_strlcat.U:
3901 This variable conditionally defines the "HAS_STRLCAT" symbol, which
3903 indicates to the C program that the strlcat () routine is
3904 available.
3905 "d_strlcpy"
3907 From d_strlcpy.U:
3908 This variable conditionally defines the "HAS_STRLCPY" symbol, which
3910 indicates to the C program that the strlcpy () routine is
3911 available.
3912 "d_strnlen"
3914 From d_strnlen.U:
3915 This variable conditionally defines the "HAS_STRNLEN" symbol, which
3917 indicates to the C program that the strnlen () routine is
3918 available.
3919 "d_strtod"
3921 From d_strtod.U:
3922 This variable conditionally defines the "HAS_STRTOD" symbol, which
3924 indicates to the C program that the strtod() routine is available
3925 to provide better numeric string conversion than atof().
3926 "d_strtol"
3928 From d_strtol.U:
3929 This variable conditionally defines the "HAS_STRTOL" symbol, which
3931 indicates to the C program that the strtol() routine is available
3932 to provide better numeric string conversion than atoi() and
3933 friends.
3934 "d_strtold"
3936 From d_strtold.U:
3937 This variable conditionally defines the "HAS_STRTOLD" symbol, which
3939 indicates to the C program that the strtold() routine is available.
3940 "d_strtold_l"
3942 From d_strtold_l.U:
3943 This variable conditionally defines the "HAS_STRTOLD_L" symbol,
3945 which indicates to the C program that the strtold_l() routine is
3946 available.
3947 "d_strtoll"
3949 From d_strtoll.U:
3950 This variable conditionally defines the "HAS_STRTOLL" symbol, which
3952 indicates to the C program that the strtoll() routine is available.
3953 "d_strtoq"
3955 From d_strtoq.U:
3956 This variable conditionally defines the "HAS_STRTOQ" symbol, which
3958 indicates to the C program that the strtoq() routine is available.
3959 "d_strtoul"
3961 From d_strtoul.U:
3962 This variable conditionally defines the "HAS_STRTOUL" symbol, which
3964 indicates to the C program that the strtoul() routine is available
3965 to provide conversion of strings to unsigned long.
3966 "d_strtoull"
3968 From d_strtoull.U:
3969 This variable conditionally defines the "HAS_STRTOULL" symbol,
3971 which indicates to the C program that the strtoull() routine is
3972 available.
3973 "d_strtouq"
3975 From d_strtouq.U:
3976 This variable conditionally defines the "HAS_STRTOUQ" symbol, which
3978 indicates to the C program that the strtouq() routine is available.
3979 "d_strxfrm"
3981 From d_strxfrm.U:
3982 This variable conditionally defines "HAS_STRXFRM" if strxfrm() is
3984 available to transform strings.
3985 "d_suidsafe"
3987 From d_dosuid.U:
3988 This variable conditionally defines "SETUID_SCRIPTS_ARE_SECURE_NOW"
3990 if setuid scripts can be secure. This test looks in /dev/fd/.
3991 "d_symlink"
3993 From d_symlink.U:
3994 This variable conditionally defines the "HAS_SYMLINK" symbol, which
3996 indicates to the C program that the symlink() routine is available
3997 to create symbolic links.
3998 "d_syscall"
4000 From d_syscall.U:
4001 This variable conditionally defines "HAS_SYSCALL" if syscall() is
4003 available call arbitrary system calls.
4004 "d_syscallproto"
4006 From d_syscallproto.U:
4007 This variable conditionally defines the "HAS_SYSCALL_PROTO" symbol,
4009 which indicates to the C program that the system provides a
4010 prototype for the syscall() function. Otherwise, it is up to the
4011 program to supply one.
4012 "d_sysconf"
4014 From d_sysconf.U:
4015 This variable conditionally defines the "HAS_SYSCONF" symbol, which
4017 indicates to the C program that the sysconf() routine is available
4018 to determine system related limits and options.
4019 "d_sysernlst"
4021 From d_strerror.U:
4022 This variable conditionally defines "HAS_SYS_ERRNOLIST" if
4024 sys_errnolist[] is available to translate error numbers to the
4025 symbolic name.
4026 "d_syserrlst"
4028 From d_strerror.U:
4029 This variable conditionally defines "HAS_SYS_ERRLIST" if
4031 sys_errlist[] is available to translate error numbers to strings.
4032 "d_system"
4034 From d_system.U:
4035 This variable conditionally defines "HAS_SYSTEM" if system() is
4037 available to issue a shell command.
4038 "d_tcgetpgrp"
4040 From d_tcgtpgrp.U:
4041 This variable conditionally defines the "HAS_TCGETPGRP" symbol,
4043 which indicates to the C program that the tcgetpgrp() routine is
4044 available. to get foreground process group "ID".
4045 "d_tcsetpgrp"
4047 From d_tcstpgrp.U:
4048 This variable conditionally defines the "HAS_TCSETPGRP" symbol,
4050 which indicates to the C program that the tcsetpgrp() routine is
4051 available to set foreground process group "ID".
4052 "d_telldir"
4054 From d_readdir.U:
4055 This variable conditionally defines "HAS_TELLDIR" if telldir() is
4057 available.
4058 "d_telldirproto"
4060 From d_telldirproto.U:
4061 This variable conditionally defines the "HAS_TELLDIR_PROTO" symbol,
4063 which indicates to the C program that the system provides a
4064 prototype for the telldir() function. Otherwise, it is up to the
4065 program to supply one.
4066 "d_tgamma"
4068 From d_tgamma.U:
4069 This variable conditionally defines the "HAS_TGAMMA" symbol, which
4071 indicates to the C program that the tgamma() routine is available
4072 for the gamma function. See also d_lgamma.
4073 "d_thread_safe_nl_langinfo_l"
4075 From d_nl_langinfo_l.U:
4076 This variable contains the eventual value of the
4078 "HAS_THREAD_SAFE_NL_LANGINFO_L" symbol, which indicates if the
4079 nl_langinfo_l() function exists and is thread-safe.
4080 "d_time"
4082 From d_time.U:
4083 This variable conditionally defines the "HAS_TIME" symbol, which
4085 indicates that the time() routine exists. The time() routine is
4086 normally provided on "UNIX" systems.
4087 "d_timegm"
4089 From d_timegm.U:
4090 This variable conditionally defines the "HAS_TIMEGM" symbol, which
4092 indicates to the C program that the timegm () routine is available.
4093 "d_times"
4095 From d_times.U:
4096 This variable conditionally defines the "HAS_TIMES" symbol, which
4098 indicates that the times() routine exists. The times() routine is
4099 normally provided on "UNIX" systems. You may have to include
4100 <sys/times.h>.
4101 "d_tm_tm_gmtoff"
4103 From i_time.U:
4104 This variable conditionally defines "HAS_TM_TM_GMTOFF", which
4106 indicates indicates to the C program that the struct tm has the
4107 tm_gmtoff field.
4108 "d_tm_tm_zone"
4110 From i_time.U:
4111 This variable conditionally defines "HAS_TM_TM_ZONE", which
4113 indicates indicates to the C program that the struct tm has the
4114 tm_zone field.
4115 "d_tmpnam_r"
4117 From d_tmpnam_r.U:
4118 This variable conditionally defines the "HAS_TMPNAM_R" symbol,
4120 which indicates to the C program that the tmpnam_r() routine is
4121 available.
4122 "d_trunc"
4124 From d_trunc.U:
4125 This variable conditionally defines the "HAS_TRUNC" symbol, which
4127 indicates to the C program that the trunc() routine is available to
4128 round doubles towards zero.
4129 "d_truncate"
4131 From d_truncate.U:
4132 This variable conditionally defines "HAS_TRUNCATE" if truncate() is
4134 available to truncate files.
4135 "d_truncl"
4137 From d_truncl.U:
4138 This variable conditionally defines the "HAS_TRUNCL" symbol, which
4140 indicates to the C program that the truncl() routine is available
4141 to round long doubles towards zero. If copysignl is also present,
4142 we can emulate modfl.
4143 "d_ttyname_r"
4145 From d_ttyname_r.U:
4146 This variable conditionally defines the "HAS_TTYNAME_R" symbol,
4148 which indicates to the C program that the ttyname_r() routine is
4149 available.
4150 "d_tzname"
4152 From d_tzname.U:
4153 This variable conditionally defines "HAS_TZNAME" if tzname[] is
4155 available to access timezone names.
4156 "d_u32align"
4158 From d_u32align.U:
4159 This variable tells whether you must access character data through
4161 U32-aligned pointers.
4162 "d_ualarm"
4164 From d_ualarm.U:
4165 This variable conditionally defines the "HAS_UALARM" symbol, which
4167 indicates to the C program that the ualarm() routine is available.
4168 "d_umask"
4170 From d_umask.U:
4171 This variable conditionally defines the "HAS_UMASK" symbol, which
4173 indicates to the C program that the umask() routine is available.
4174 to set and get the value of the file creation mask.
4175 "d_uname"
4177 From d_gethname.U:
4178 This variable conditionally defines the "HAS_UNAME" symbol, which
4180 indicates to the C program that the uname() routine may be used to
4181 derive the host name.
4182 "d_union_semun"
4184 From d_union_semun.U:
4185 This variable conditionally defines "HAS_UNION_SEMUN" if the union
4187 semun is defined by including <sys/sem.h>.
4188 "d_unlinkat"
4190 From d_fsat.U:
4191 This variable conditionally defines the "HAS_UNLINKAT" symbol,
4193 which indicates the "POSIX" unlinkat() function isavailable.
4194 "d_unordered"
4196 From d_unordered.U:
4197 This variable conditionally defines the "HAS_UNORDERED" symbol,
4199 which indicates to the C program that the unordered() routine is
4200 available.
4201 "d_unsetenv"
4203 From d_unsetenv.U:
4204 This variable conditionally defines the "HAS_UNSETENV" symbol,
4206 which indicates to the C program that the unsetenv () routine is
4207 available.
4208 "d_uselocale"
4210 From d_newlocale.U:
4211 This variable conditionally defines the "HAS_USELOCALE" symbol,
4213 which indicates to the C program that the uselocale() routine is
4214 available to set the current locale for the calling thread.
4215 "d_usleep"
4217 From d_usleep.U:
4218 This variable conditionally defines "HAS_USLEEP" if usleep() is
4220 available to do high granularity sleeps.
4221 "d_usleepproto"
4223 From d_usleepproto.U:
4224 This variable conditionally defines the "HAS_USLEEP_PROTO" symbol,
4226 which indicates to the C program that the system provides a
4227 prototype for the usleep() function. Otherwise, it is up to the
4228 program to supply one.
4229 "d_ustat"
4231 From d_ustat.U:
4232 This variable conditionally defines "HAS_USTAT" if ustat() is
4234 available to query file system statistics by dev_t.
4235 "d_vendorarch"
4237 From vendorarch.U:
4238 This variable conditionally defined "PERL_VENDORARCH".
4240 "d_vendorbin"
4242 From vendorbin.U:
4243 This variable conditionally defines "PERL_VENDORBIN".
4245 "d_vendorlib"
4247 From vendorlib.U:
4248 This variable conditionally defines "PERL_VENDORLIB".
4250 "d_vendorscript"
4252 From vendorscript.U:
4253 This variable conditionally defines "PERL_VENDORSCRIPT".
4255 "d_vfork"
4257 From d_vfork.U:
4258 This variable conditionally defines the "HAS_VFORK" symbol, which
4260 indicates the vfork() routine is available.
4261 "d_void_closedir"
4263 From d_closedir.U:
4264 This variable conditionally defines "VOID_CLOSEDIR" if closedir()
4266 does not return a value.
4267 "d_voidsig"
4269 From d_voidsig.U:
4270 This variable conditionally defines "VOIDSIG" if this system
4272 declares "void (*signal(...))()" in signal.h. The old way was to
4273 declare it as "int (*signal(...))()".
4274 "d_voidtty"
4276 From i_sysioctl.U:
4277 This variable conditionally defines "USE_IOCNOTTY" to indicate that
4279 the ioctl() call with "TIOCNOTTY" should be used to void tty
4280 association. Otherwise (on "USG" probably), it is enough to close
4281 the standard file descriptors and do a setpgrp().
4282 "d_vsnprintf"
4284 From d_snprintf.U:
4285 This variable conditionally defines the "HAS_VSNPRINTF" symbol,
4287 which indicates to the C program that the vsnprintf () library
4288 function is available.
4289 "d_wait4"
4291 From d_wait4.U:
4292 This variable conditionally defines the HAS_WAIT4 symbol, which
4294 indicates the wait4() routine is available.
4295 "d_waitpid"
4297 From d_waitpid.U:
4298 This variable conditionally defines "HAS_WAITPID" if waitpid() is
4300 available to wait for child process.
4301 "d_wcscmp"
4303 From d_wcscmp.U:
4304 This variable conditionally defines the "HAS_WCSCMP" symbol if the
4306 wcscmp() routine is available and can be used to compare wide
4307 character strings.
4308 "d_wcstombs"
4310 From d_wcstombs.U:
4311 This variable conditionally defines the "HAS_WCSTOMBS" symbol,
4313 which indicates to the C program that the wcstombs() routine is
4314 available to convert wide character strings to multibyte strings.
4315 "d_wcsxfrm"
4317 From d_wcsxfrm.U:
4318 This variable conditionally defines the "HAS_WCSXFRM" symbol if the
4320 wcsxfrm() routine is available and can be used to compare wide
4321 character strings.
4322 "d_wctomb"
4324 From d_wctomb.U:
4325 This variable conditionally defines the "HAS_WCTOMB" symbol, which
4327 indicates to the C program that the wctomb() routine is available
4328 to convert a wide character to a multibyte.
4329 "d_writev"
4331 From d_writev.U:
4332 This variable conditionally defines the "HAS_WRITEV" symbol, which
4334 indicates to the C program that the writev() routine is available.
4335 "d_xenix"
4337 From Guess.U:
4338 This variable conditionally defines the symbol "XENIX", which
4340 alerts the C program that it runs under Xenix.
4341 "date"
4343 From Loc.U:
4344 This variable is used internally by Configure to determine the full
4346 pathname (if any) of the date program. After Configure runs, the
4347 value is reset to a plain "date" and is not useful.
4348 "db_hashtype"
4350 From i_db.U:
4351 This variable contains the type of the hash structure element in
4353 the <db.h> header file. In older versions of "DB", it was int,
4354 while in newer ones it is u_int32_t.
4355 "db_prefixtype"
4357 From i_db.U:
4358 This variable contains the type of the prefix structure element in
4360 the <db.h> header file. In older versions of "DB", it was int,
4361 while in newer ones it is size_t.
4362 "db_version_major"
4364 From i_db.U:
4365 This variable contains the major version number of Berkeley "DB"
4367 found in the <db.h> header file.
4368 "db_version_minor"
4370 From i_db.U:
4371 This variable contains the minor version number of Berkeley "DB"
4373 found in the <db.h> header file. For "DB" version 1 this is always
4374 0.
4375 "db_version_patch"
4377 From i_db.U:
4378 This variable contains the patch version number of Berkeley "DB"
4380 found in the <db.h> header file. For "DB" version 1 this is always
4381 0.
4382 "default_inc_excludes_dot"
4384 From defaultincdot.U:
4385 When defined, remove the legacy . from @"INC"
4387 "direntrytype"
4389 From i_dirent.U:
4390 This symbol is set to "struct direct" or "struct dirent" depending
4392 on whether dirent is available or not. You should use this pseudo
4393 type to portably declare your directory entries.
4394 "dlext"
4396 From dlext.U:
4397 This variable contains the extension that is to be used for the
4399 dynamically loaded modules that perl generates.
4400 "dlsrc"
4402 From dlsrc.U:
4403 This variable contains the name of the dynamic loading file that
4405 will be used with the package.
4406 "doubleinfbytes"
4408 From infnan.U:
4409 This variable contains comma-separated list of hexadecimal bytes
4411 for the double precision infinity.
4412 "doublekind"
4414 From longdblfio.U:
4415 This variable, if defined, encodes the type of a double: 1 = "IEEE"
4417 754 32-bit little endian, 2 = "IEEE" 754 32-bit big endian, 3 =
4418 "IEEE" 754 64-bit little endian, 4 = "IEEE" 754 64-bit big endian,
4419 5 = "IEEE" 754 128-bit little endian, 6 = "IEEE" 754 128-bit big
4420 endian, 7 = "IEEE" 754 64-bit mixed endian le-be, 8 = "IEEE" 754
4421 64-bit mixed endian be-le, 9 = "VAX" 32bit little endian F float
4422 format 10 = "VAX" 64bit little endian D float format 11 = "VAX"
4423 64bit little endian G float format 12 = "IBM" 32bit format 13 =
4424 "IBM" 64bit format 14 = Cray 64bit format -1 = unknown format.
4425 "doublemantbits"
4427 From mantbits.U:
4428 This symbol, if defined, tells how many mantissa bits there are in
4430 double precision floating point format. Note that this is usually
4431 "DBL_MANT_DIG" minus one, since with the standard "IEEE" 754
4432 formats "DBL_MANT_DIG" includes the implicit bit which doesn't
4433 really exist.
4434 "doublenanbytes"
4436 From infnan.U:
4437 This variable contains comma-separated list of hexadecimal bytes
4439 for the double precision not-a-number.
4440 "doublesize"
4442 From doublesize.U:
4443 This variable contains the value of the "DOUBLESIZE" symbol, which
4445 indicates to the C program how many bytes there are in a double.
4446 "drand01"
4448 From randfunc.U:
4449 Indicates the macro to be used to generate normalized random
4451 numbers. Uses randfunc, often divided by (double) (((unsigned
4452 long) 1 << randbits)) in order to normalize the result. In C
4453 programs, the macro "Drand01" is mapped to drand01.
4454 "drand48_r_proto"
4456 From d_drand48_r.U:
4457 This variable encodes the prototype of drand48_r. It is zero if
4459 d_drand48_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
4460 of reentr.h if d_drand48_r is defined.
4461 "dtrace"
4463 From usedtrace.U:
4464 This variable holds the location of the dtrace executable.
4466 "dtraceobject"
4468 From dtraceobject.U:
4469 Whether we need to build an object file with the dtrace tool.
4471 "dtracexnolibs"
4473 From dtraceobject.U:
4474 Whether dtrace accepts -xnolibs. If available we call dtrace -h
4476 and dtrace -G with -xnolibs to allow dtrace to run in a jail on
4477 FreeBSD.
4478 "dynamic_ext"
4480 From Extensions.U:
4481 This variable holds a list of "XS" extension files we want to link
4483 dynamically into the package. It is used by Makefile.
4484 e
4486 "eagain"
4487 From nblock_io.U:
4488 This variable bears the symbolic errno code set by read() when no
4490 data is present on the file and non-blocking I/O was enabled
4491 (otherwise, read() blocks naturally).
4492 "ebcdic"
4494 From ebcdic.U:
4495 This variable conditionally defines "EBCDIC" if this system uses
4497 "EBCDIC" encoding.
4498 "echo"
4500 From Loc.U:
4501 This variable is used internally by Configure to determine the full
4503 pathname (if any) of the echo program. After Configure runs, the
4504 value is reset to a plain "echo" and is not useful.
4505 "egrep"
4507 From Loc.U:
4508 This variable is used internally by Configure to determine the full
4510 pathname (if any) of the egrep program. After Configure runs, the
4511 value is reset to a plain "egrep" and is not useful.
4512 "emacs"
4514 From Loc.U:
4515 This variable is defined but not used by Configure. The value is
4517 the empty string and is not useful.
4518 "endgrent_r_proto"
4520 From d_endgrent_r.U:
4521 This variable encodes the prototype of endgrent_r. It is zero if
4523 d_endgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4524 macros of reentr.h if d_endgrent_r is defined.
4525 "endhostent_r_proto"
4527 From d_endhostent_r.U:
4528 This variable encodes the prototype of endhostent_r. It is zero if
4530 d_endhostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4531 macros of reentr.h if d_endhostent_r is defined.
4532 "endnetent_r_proto"
4534 From d_endnetent_r.U:
4535 This variable encodes the prototype of endnetent_r. It is zero if
4537 d_endnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4538 macros of reentr.h if d_endnetent_r is defined.
4539 "endprotoent_r_proto"
4541 From d_endprotoent_r.U:
4542 This variable encodes the prototype of endprotoent_r. It is zero
4544 if d_endprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4545 macros of reentr.h if d_endprotoent_r is defined.
4546 "endpwent_r_proto"
4548 From d_endpwent_r.U:
4549 This variable encodes the prototype of endpwent_r. It is zero if
4551 d_endpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4552 macros of reentr.h if d_endpwent_r is defined.
4553 "endservent_r_proto"
4555 From d_endservent_r.U:
4556 This variable encodes the prototype of endservent_r. It is zero if
4558 d_endservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4559 macros of reentr.h if d_endservent_r is defined.
4560 "eunicefix"
4562 From Init.U:
4563 When running under Eunice this variable contains a command which
4565 will convert a shell script to the proper form of text file for it
4566 to be executable by the shell. On other systems it is a no-op.
4567 "exe_ext"
4569 From Unix.U:
4570 This is an old synonym for _exe.
4572 "expr"
4574 From Loc.U:
4575 This variable is used internally by Configure to determine the full
4577 pathname (if any) of the expr program. After Configure runs, the
4578 value is reset to a plain "expr" and is not useful.
4579 "extensions"
4581 From Extensions.U:
4582 This variable holds a list of all extension files (both "XS" and
4584 non-xs) installed with the package. It is propagated to Config.pm
4585 and is typically used to test whether a particular extension is
4586 available.
4587 "extern_C"
4589 From Csym.U:
4590 "ANSI" C requires "extern" where C++ requires 'extern "C"'. This
4592 variable can be used in Configure to do the right thing.
4593 "extras"
4595 From Extras.U:
4596 This variable holds a list of extra modules to install.
4598 f
4600 "fflushall"
4601 From fflushall.U:
4602 This symbol, if defined, tells that to flush all pending stdio
4604 output one must loop through all the stdio file handles stored in
4605 an array and fflush them. Note that if fflushNULL is defined,
4606 fflushall will not even be probed for and will be left undefined.
4607 "fflushNULL"
4609 From fflushall.U:
4610 This symbol, if defined, tells that fflush("NULL") correctly
4612 flushes all pending stdio output without side effects. In
4613 particular, on some platforms calling fflush("NULL") *still*
4614 corrupts "STDIN" if it is a pipe.
4615 "find"
4617 From Loc.U:
4618 This variable is defined but not used by Configure. The value is
4620 the empty string and is not useful.
4621 "firstmakefile"
4623 From Unix.U:
4624 This variable defines the first file searched by make. On unix, it
4626 is makefile (then Makefile). On case-insensitive systems, it might
4627 be something else. This is only used to deal with convoluted make
4628 depend tricks.
4629 "flex"
4631 From Loc.U:
4632 This variable is defined but not used by Configure. The value is
4634 the empty string and is not useful.
4635 "fpossize"
4637 From fpossize.U:
4638 This variable contains the size of a fpostype in bytes.
4640 "fpostype"
4642 From fpostype.U:
4643 This variable defines Fpos_t to be something like fpos_t, long,
4645 uint, or whatever type is used to declare file positions in libc.
4646 "freetype"
4648 From mallocsrc.U:
4649 This variable contains the return type of free(). It is usually
4651 void, but occasionally int.
4652 "from"
4654 From Cross.U:
4655 This variable contains the command used by Configure to copy files
4657 from the target host. Useful and available only during Perl build.
4658 The string ":" if not cross-compiling.
4659 "full_ar"
4661 From Loc_ar.U:
4662 This variable contains the full pathname to "ar", whether or not
4664 the user has specified "portability". This is only used in the
4665 Makefile.SH.
4666 "full_csh"
4668 From d_csh.U:
4669 This variable contains the full pathname to "csh", whether or not
4671 the user has specified "portability". This is only used in the
4672 compiled C program, and we assume that all systems which can share
4673 this executable will have the same full pathname to csh.
4674 "full_sed"
4676 From Loc_sed.U:
4677 This variable contains the full pathname to "sed", whether or not
4679 the user has specified "portability". This is only used in the
4680 compiled C program, and we assume that all systems which can share
4681 this executable will have the same full pathname to sed.
4682 g
4684 "gccansipedantic"
4685 From gccvers.U:
4686 If "GNU" cc (gcc) is used, this variable will enable (if set) the
4688 -ansi and -pedantic ccflags for building core files (through cflags
4689 script). (See Porting/pumpkin.pod for full description).
4690 "gccosandvers"
4692 From gccvers.U:
4693 If "GNU" cc (gcc) is used, this variable holds the operating system
4695 and version used to compile gcc. It is set to '' if not gcc, or if
4696 nothing useful can be parsed as the os version.
4697 "gccversion"
4699 From gccvers.U:
4700 If "GNU" cc (gcc) is used, this variable holds 1 or 2 to indicate
4702 whether the compiler is version 1 or 2. This is used in setting
4703 some of the default cflags. It is set to '' if not gcc.
4704 "getgrent_r_proto"
4706 From d_getgrent_r.U:
4707 This variable encodes the prototype of getgrent_r. It is zero if
4709 d_getgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4710 macros of reentr.h if d_getgrent_r is defined.
4711 "getgrgid_r_proto"
4713 From d_getgrgid_r.U:
4714 This variable encodes the prototype of getgrgid_r. It is zero if
4716 d_getgrgid_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4717 macros of reentr.h if d_getgrgid_r is defined.
4718 "getgrnam_r_proto"
4720 From d_getgrnam_r.U:
4721 This variable encodes the prototype of getgrnam_r. It is zero if
4723 d_getgrnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4724 macros of reentr.h if d_getgrnam_r is defined.
4725 "gethostbyaddr_r_proto"
4727 From d_gethostbyaddr_r.U:
4728 This variable encodes the prototype of gethostbyaddr_r. It is zero
4730 if d_gethostbyaddr_r is undef, and one of the
4731 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_gethostbyaddr_r is
4732 defined.
4733 "gethostbyname_r_proto"
4735 From d_gethostbyname_r.U:
4736 This variable encodes the prototype of gethostbyname_r. It is zero
4738 if d_gethostbyname_r is undef, and one of the
4739 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_gethostbyname_r is
4740 defined.
4741 "gethostent_r_proto"
4743 From d_gethostent_r.U:
4744 This variable encodes the prototype of gethostent_r. It is zero if
4746 d_gethostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4747 macros of reentr.h if d_gethostent_r is defined.
4748 "getlogin_r_proto"
4750 From d_getlogin_r.U:
4751 This variable encodes the prototype of getlogin_r. It is zero if
4753 d_getlogin_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4754 macros of reentr.h if d_getlogin_r is defined.
4755 "getnetbyaddr_r_proto"
4757 From d_getnetbyaddr_r.U:
4758 This variable encodes the prototype of getnetbyaddr_r. It is zero
4760 if d_getnetbyaddr_r is undef, and one of the
4761 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getnetbyaddr_r is
4762 defined.
4763 "getnetbyname_r_proto"
4765 From d_getnetbyname_r.U:
4766 This variable encodes the prototype of getnetbyname_r. It is zero
4768 if d_getnetbyname_r is undef, and one of the
4769 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getnetbyname_r is
4770 defined.
4771 "getnetent_r_proto"
4773 From d_getnetent_r.U:
4774 This variable encodes the prototype of getnetent_r. It is zero if
4776 d_getnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4777 macros of reentr.h if d_getnetent_r is defined.
4778 "getprotobyname_r_proto"
4780 From d_getprotobyname_r.U:
4781 This variable encodes the prototype of getprotobyname_r. It is
4783 zero if d_getprotobyname_r is undef, and one of the
4784 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getprotobyname_r is
4785 defined.
4786 "getprotobynumber_r_proto"
4788 From d_getprotobynumber_r.U:
4789 This variable encodes the prototype of getprotobynumber_r. It is
4791 zero if d_getprotobynumber_r is undef, and one of the
4792 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getprotobynumber_r
4793 is defined.
4794 "getprotoent_r_proto"
4796 From d_getprotoent_r.U:
4797 This variable encodes the prototype of getprotoent_r. It is zero
4799 if d_getprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4800 macros of reentr.h if d_getprotoent_r is defined.
4801 "getpwent_r_proto"
4803 From d_getpwent_r.U:
4804 This variable encodes the prototype of getpwent_r. It is zero if
4806 d_getpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4807 macros of reentr.h if d_getpwent_r is defined.
4808 "getpwnam_r_proto"
4810 From d_getpwnam_r.U:
4811 This variable encodes the prototype of getpwnam_r. It is zero if
4813 d_getpwnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4814 macros of reentr.h if d_getpwnam_r is defined.
4815 "getpwuid_r_proto"
4817 From d_getpwuid_r.U:
4818 This variable encodes the prototype of getpwuid_r. It is zero if
4820 d_getpwuid_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4821 macros of reentr.h if d_getpwuid_r is defined.
4822 "getservbyname_r_proto"
4824 From d_getservbyname_r.U:
4825 This variable encodes the prototype of getservbyname_r. It is zero
4827 if d_getservbyname_r is undef, and one of the
4828 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getservbyname_r is
4829 defined.
4830 "getservbyport_r_proto"
4832 From d_getservbyport_r.U:
4833 This variable encodes the prototype of getservbyport_r. It is zero
4835 if d_getservbyport_r is undef, and one of the
4836 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getservbyport_r is
4837 defined.
4838 "getservent_r_proto"
4840 From d_getservent_r.U:
4841 This variable encodes the prototype of getservent_r. It is zero if
4843 d_getservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4844 macros of reentr.h if d_getservent_r is defined.
4845 "getspnam_r_proto"
4847 From d_getspnam_r.U:
4848 This variable encodes the prototype of getspnam_r. It is zero if
4850 d_getspnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4851 macros of reentr.h if d_getspnam_r is defined.
4852 "gidformat"
4854 From gidf.U:
4855 This variable contains the format string used for printing a Gid_t.
4857 "gidsign"
4859 From gidsign.U:
4860 This variable contains the signedness of a gidtype. 1 for
4862 unsigned, -1 for signed.
4863 "gidsize"
4865 From gidsize.U:
4866 This variable contains the size of a gidtype in bytes.
4868 "gidtype"
4870 From gidtype.U:
4871 This variable defines Gid_t to be something like gid_t, int,
4873 ushort, or whatever type is used to declare the return type of
4874 getgid(). Typically, it is the type of group ids in the kernel.
4875 "glibpth"
4877 From libpth.U:
4878 This variable holds the general path (space-separated) used to find
4880 libraries. It may contain directories that do not exist on this
4881 platform, libpth is the cleaned-up version.
4882 "gmake"
4884 From Loc.U:
4885 This variable is used internally by Configure to determine the full
4887 pathname (if any) of the gmake program. After Configure runs, the
4888 value is reset to a plain "gmake" and is not useful.
4889 "gmtime_r_proto"
4891 From d_gmtime_r.U:
4892 This variable encodes the prototype of gmtime_r. It is zero if
4894 d_gmtime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
4895 of reentr.h if d_gmtime_r is defined.
4896 "gnulibc_version"
4898 From d_gnulibc.U:
4899 This variable contains the version number of the "GNU" C library.
4901 It is usually something like 2.2.5. It is a plain '' if this is
4902 not the "GNU" C library, or if the version is unknown.
4903 "grep"
4905 From Loc.U:
4906 This variable is used internally by Configure to determine the full
4908 pathname (if any) of the grep program. After Configure runs, the
4909 value is reset to a plain "grep" and is not useful.
4910 "groupcat"
4912 From nis.U:
4913 This variable contains a command that produces the text of the
4915 /etc/group file. This is normally "cat /etc/group", but can be
4916 "ypcat group" when "NIS" is used. On some systems, such as os390,
4917 there may be no equivalent command, in which case this variable is
4918 unset.
4919 "groupstype"
4921 From groupstype.U:
4922 This variable defines Groups_t to be something like gid_t, int,
4924 ushort, or whatever type is used for the second argument to
4925 getgroups() and setgroups(). Usually, this is the same as gidtype
4926 (gid_t), but sometimes it isn't.
4927 "gzip"
4929 From Loc.U:
4930 This variable is used internally by Configure to determine the full
4932 pathname (if any) of the gzip program. After Configure runs, the
4933 value is reset to a plain "gzip" and is not useful.
4934 h
4936 "h_fcntl"
4937 From h_fcntl.U:
4938 This is variable gets set in various places to tell i_fcntl that
4940 <fcntl.h> should be included.
4941 "h_sysfile"
4943 From h_sysfile.U:
4944 This is variable gets set in various places to tell i_sys_file that
4946 <sys/file.h> should be included.
4947 "hint"
4949 From Oldconfig.U:
4950 Gives the type of hints used for previous answers. May be one of
4952 "default", "recommended" or "previous".
4953 "hostcat"
4955 From nis.U:
4956 This variable contains a command that produces the text of the
4958 /etc/hosts file. This is normally "cat /etc/hosts", but can be
4959 "ypcat hosts" when "NIS" is used. On some systems, such as os390,
4960 there may be no equivalent command, in which case this variable is
4961 unset.
4962 "hostgenerate"
4964 From Cross.U:
4965 This variable contains the path to a generate_uudmap binary that
4967 can be run on the host "OS" when cross-compiling. Useful and
4968 available only during Perl build. Empty string '' if not cross-
4969 compiling.
4970 "hostosname"
4972 From Cross.U:
4973 This variable contains the original value of $^O for hostperl when
4975 cross-compiling. This is useful to pick the proper tools when
4976 running build code in the host. Empty string '' if not cross-
4977 compiling.
4978 "hostperl"
4980 From Cross.U:
4981 This variable contains the path to a miniperl binary that can be
4983 run on the host "OS" when cross-compiling. Useful and available
4984 only during Perl build. Empty string '' if not cross-compiling.
4985 "html1dir"
4987 From html1dir.U:
4988 This variable contains the name of the directory in which html
4990 source pages are to be put. This directory is for pages that
4991 describe whole programs, not libraries or modules. It is intended
4992 to correspond roughly to section 1 of the Unix manuals.
4993 "html1direxp"
4995 From html1dir.U:
4996 This variable is the same as the html1dir variable, but is filename
4998 expanded at configuration time, for convenient use in makefiles.
4999 "html3dir"
5001 From html3dir.U:
5002 This variable contains the name of the directory in which html
5004 source pages are to be put. This directory is for pages that
5005 describe libraries or modules. It is intended to correspond
5006 roughly to section 3 of the Unix manuals.
5007 "html3direxp"
5009 From html3dir.U:
5010 This variable is the same as the html3dir variable, but is filename
5012 expanded at configuration time, for convenient use in makefiles.
5013 i
5015 "i16size"
5016 From perlxv.U:
5017 This variable is the size of an I16 in bytes.
5019 "i16type"
5021 From perlxv.U:
5022 This variable contains the C type used for Perl's I16.
5024 "i32size"
5026 From perlxv.U:
5027 This variable is the size of an I32 in bytes.
5029 "i32type"
5031 From perlxv.U:
5032 This variable contains the C type used for Perl's I32.
5034 "i64size"
5036 From perlxv.U:
5037 This variable is the size of an I64 in bytes.
5039 "i64type"
5041 From perlxv.U:
5042 This variable contains the C type used for Perl's I64.
5044 "i8size"
5046 From perlxv.U:
5047 This variable is the size of an I8 in bytes.
5049 "i8type"
5051 From perlxv.U:
5052 This variable contains the C type used for Perl's I8.
5054 "i_arpainet"
5056 From i_arpainet.U:
5057 This variable conditionally defines the "I_ARPA_INET" symbol, and
5059 indicates whether a C program should include <arpa/inet.h>.
5060 "i_bfd"
5062 From i_bfd.U:
5063 This variable conditionally defines the "I_BFD" symbol, and
5065 indicates whether a C program can include <bfd.h>.
5066 "i_bsdioctl"
5068 From i_sysioctl.U:
5069 This variable conditionally defines the "I_SYS_BSDIOCTL" symbol,
5071 which indicates to the C program that <sys/bsdioctl.h> exists and
5072 should be included.
5073 "i_crypt"
5075 From i_crypt.U:
5076 This variable conditionally defines the "I_CRYPT" symbol, and
5078 indicates whether a C program should include <crypt.h>.
5079 "i_db"
5081 From i_db.U:
5082 This variable conditionally defines the "I_DB" symbol, and
5084 indicates whether a C program may include Berkeley's "DB" include
5085 file <db.h>.
5086 "i_dbm"
5088 From i_dbm.U:
5089 This variable conditionally defines the "I_DBM" symbol, which
5091 indicates to the C program that <dbm.h> exists and should be
5092 included.
5093 "i_dirent"
5095 From i_dirent.U:
5096 This variable conditionally defines "I_DIRENT", which indicates to
5098 the C program that it should include <dirent.h>.
5099 "i_dlfcn"
5101 From i_dlfcn.U:
5102 This variable conditionally defines the "I_DLFCN" symbol, which
5104 indicates to the C program that <dlfcn.h> exists and should be
5105 included.
5106 "i_execinfo"
5108 From i_execinfo.U:
5109 This variable conditionally defines the "I_EXECINFO" symbol, and
5111 indicates whether a C program may include <execinfo.h>, for
5112 backtrace() support.
5113 "i_fcntl"
5115 From i_fcntl.U:
5116 This variable controls the value of "I_FCNTL" (which tells the C
5118 program to include <fcntl.h>).
5119 "i_fenv"
5121 From i_fenv.U:
5122 This variable conditionally defines the "I_FENV" symbol, which
5124 indicates to the C program that <fenv.h> exists and should be
5125 included.
5126 "i_fp"
5128 From i_fp.U:
5129 This variable conditionally defines the "I_FP" symbol, and
5131 indicates whether a C program should include <fp.h>.
5132 "i_fp_class"
5134 From i_fp_class.U:
5135 This variable conditionally defines the "I_FP_CLASS" symbol, and
5137 indicates whether a C program should include <fp_class.h>.
5138 "i_gdbm"
5140 From i_gdbm.U:
5141 This variable conditionally defines the "I_GDBM" symbol, which
5143 indicates to the C program that <gdbm.h> exists and should be
5144 included.
5145 "i_gdbm_ndbm"
5147 From i_ndbm.U:
5148 This variable conditionally defines the "I_GDBM_NDBM" symbol, which
5150 indicates to the C program that <gdbm-ndbm.h> exists and should be
5151 included. This is the location of the ndbm.h compatibility file in
5152 Debian 4.0.
5153 "i_gdbmndbm"
5155 From i_ndbm.U:
5156 This variable conditionally defines the "I_GDBMNDBM" symbol, which
5158 indicates to the C program that <gdbm/ndbm.h> exists and should be
5159 included. This was the location of the ndbm.h compatibility file
5160 in RedHat 7.1.
5161 "i_grp"
5163 From i_grp.U:
5164 This variable conditionally defines the "I_GRP" symbol, and
5166 indicates whether a C program should include <grp.h>.
5167 "i_ieeefp"
5169 From i_ieeefp.U:
5170 This variable conditionally defines the "I_IEEEFP" symbol, and
5172 indicates whether a C program should include <ieeefp.h>.
5173 "i_inttypes"
5175 From i_inttypes.U:
5176 This variable conditionally defines the "I_INTTYPES" symbol, and
5178 indicates whether a C program should include <inttypes.h>.
5179 "i_langinfo"
5181 From i_langinfo.U:
5182 This variable conditionally defines the "I_LANGINFO" symbol, and
5184 indicates whether a C program should include <langinfo.h>.
5185 "i_libutil"
5187 From i_libutil.U:
5188 This variable conditionally defines the "I_LIBUTIL" symbol, and
5190 indicates whether a C program should include <libutil.h>.
5191 "i_locale"
5193 From i_locale.U:
5194 This variable conditionally defines the "I_LOCALE" symbol, and
5196 indicates whether a C program should include <locale.h>.
5197 "i_machcthr"
5199 From i_machcthr.U:
5200 This variable conditionally defines the "I_MACH_CTHREADS" symbol,
5202 and indicates whether a C program should include <mach/cthreads.h>.
5203 "i_malloc"
5205 From i_malloc.U:
5206 This variable conditionally defines the "I_MALLOC" symbol, and
5208 indicates whether a C program should include <malloc.h>.
5209 "i_mallocmalloc"
5211 From i_mallocmalloc.U:
5212 This variable conditionally defines the "I_MALLOCMALLOC" symbol,
5214 and indicates whether a C program should include <malloc/malloc.h>.
5215 "i_mntent"
5217 From i_mntent.U:
5218 This variable conditionally defines the "I_MNTENT" symbol, and
5220 indicates whether a C program should include <mntent.h>.
5221 "i_ndbm"
5223 From i_ndbm.U:
5224 This variable conditionally defines the "I_NDBM" symbol, which
5226 indicates to the C program that <ndbm.h> exists and should be
5227 included.
5228 "i_netdb"
5230 From i_netdb.U:
5231 This variable conditionally defines the "I_NETDB" symbol, and
5233 indicates whether a C program should include <netdb.h>.
5234 "i_neterrno"
5236 From i_neterrno.U:
5237 This variable conditionally defines the "I_NET_ERRNO" symbol, which
5239 indicates to the C program that <net/errno.h> exists and should be
5240 included.
5241 "i_netinettcp"
5243 From i_netinettcp.U:
5244 This variable conditionally defines the "I_NETINET_TCP" symbol, and
5246 indicates whether a C program should include <netinet/tcp.h>.
5247 "i_niin"
5249 From i_niin.U:
5250 This variable conditionally defines "I_NETINET_IN", which indicates
5252 to the C program that it should include <netinet/in.h>. Otherwise,
5253 you may try <sys/in.h>.
5254 "i_poll"
5256 From i_poll.U:
5257 This variable conditionally defines the "I_POLL" symbol, and
5259 indicates whether a C program should include <poll.h>.
5260 "i_prot"
5262 From i_prot.U:
5263 This variable conditionally defines the "I_PROT" symbol, and
5265 indicates whether a C program should include <prot.h>.
5266 "i_pthread"
5268 From i_pthread.U:
5269 This variable conditionally defines the "I_PTHREAD" symbol, and
5271 indicates whether a C program should include <pthread.h>.
5272 "i_pwd"
5274 From i_pwd.U:
5275 This variable conditionally defines "I_PWD", which indicates to the
5277 C program that it should include <pwd.h>.
5278 "i_quadmath"
5280 From i_quadmath.U:
5281 This variable conditionally defines "I_QUADMATH", which indicates
5283 to the C program that it should include <quadmath.h>.
5284 "i_rpcsvcdbm"
5286 From i_dbm.U:
5287 This variable conditionally defines the "I_RPCSVC_DBM" symbol,
5289 which indicates to the C program that <rpcsvc/dbm.h> exists and
5290 should be included. Some System V systems might need this instead
5291 of <dbm.h>.
5292 "i_sgtty"
5294 From i_termio.U:
5295 This variable conditionally defines the "I_SGTTY" symbol, which
5297 indicates to the C program that it should include <sgtty.h> rather
5298 than <termio.h>.
5299 "i_shadow"
5301 From i_shadow.U:
5302 This variable conditionally defines the "I_SHADOW" symbol, and
5304 indicates whether a C program should include <shadow.h>.
5305 "i_socks"
5307 From i_socks.U:
5308 This variable conditionally defines the "I_SOCKS" symbol, and
5310 indicates whether a C program should include <socks.h>.
5311 "i_stdbool"
5313 From i_stdbool.U:
5314 This variable conditionally defines the "I_STDBOOL" symbol, which
5316 indicates to the C program that <stdbool.h> exists and should be
5317 included.
5318 "i_stdint"
5320 From i_stdint.U:
5321 This variable conditionally defines the "I_STDINT" symbol, which
5323 indicates to the C program that <stdint.h> exists and should be
5324 included.
5325 "i_stdlib"
5327 From i_stdlib.U:
5328 This variable unconditionally defines the "I_STDLIB" symbol.
5330 "i_sunmath"
5332 From i_sunmath.U:
5333 This variable conditionally defines the "I_SUNMATH" symbol, and
5335 indicates whether a C program should include <sunmath.h>.
5336 "i_sysaccess"
5338 From i_sysaccess.U:
5339 This variable conditionally defines the "I_SYS_ACCESS" symbol, and
5341 indicates whether a C program should include <sys/access.h>.
5342 "i_sysdir"
5344 From i_sysdir.U:
5345 This variable conditionally defines the "I_SYS_DIR" symbol, and
5347 indicates whether a C program should include <sys/dir.h>.
5348 "i_sysfile"
5350 From i_sysfile.U:
5351 This variable conditionally defines the "I_SYS_FILE" symbol, and
5353 indicates whether a C program should include <sys/file.h> to get
5354 "R_OK" and friends.
5355 "i_sysfilio"
5357 From i_sysioctl.U:
5358 This variable conditionally defines the "I_SYS_FILIO" symbol, which
5360 indicates to the C program that <sys/filio.h> exists and should be
5361 included in preference to <sys/ioctl.h>.
5362 "i_sysin"
5364 From i_niin.U:
5365 This variable conditionally defines "I_SYS_IN", which indicates to
5367 the C program that it should include <sys/in.h> instead of
5368 <netinet/in.h>.
5369 "i_sysioctl"
5371 From i_sysioctl.U:
5372 This variable conditionally defines the "I_SYS_IOCTL" symbol, which
5374 indicates to the C program that <sys/ioctl.h> exists and should be
5375 included.
5376 "i_syslog"
5378 From i_syslog.U:
5379 This variable conditionally defines the "I_SYSLOG" symbol, and
5381 indicates whether a C program should include <syslog.h>.
5382 "i_sysmman"
5384 From i_sysmman.U:
5385 This variable conditionally defines the "I_SYS_MMAN" symbol, and
5387 indicates whether a C program should include <sys/mman.h>.
5388 "i_sysmode"
5390 From i_sysmode.U:
5391 This variable conditionally defines the "I_SYSMODE" symbol, and
5393 indicates whether a C program should include <sys/mode.h>.
5394 "i_sysmount"
5396 From i_sysmount.U:
5397 This variable conditionally defines the "I_SYSMOUNT" symbol, and
5399 indicates whether a C program should include <sys/mount.h>.
5400 "i_sysndir"
5402 From i_sysndir.U:
5403 This variable conditionally defines the "I_SYS_NDIR" symbol, and
5405 indicates whether a C program should include <sys/ndir.h>.
5406 "i_sysparam"
5408 From i_sysparam.U:
5409 This variable conditionally defines the "I_SYS_PARAM" symbol, and
5411 indicates whether a C program should include <sys/param.h>.
5412 "i_syspoll"
5414 From i_syspoll.U:
5415 This variable conditionally defines the "I_SYS_POLL" symbol, which
5417 indicates to the C program that it should include <sys/poll.h>.
5418 "i_sysresrc"
5420 From i_sysresrc.U:
5421 This variable conditionally defines the "I_SYS_RESOURCE" symbol,
5423 and indicates whether a C program should include <sys/resource.h>.
5424 "i_syssecrt"
5426 From i_syssecrt.U:
5427 This variable conditionally defines the "I_SYS_SECURITY" symbol,
5429 and indicates whether a C program should include <sys/security.h>.
5430 "i_sysselct"
5432 From i_sysselct.U:
5433 This variable conditionally defines "I_SYS_SELECT", which indicates
5435 to the C program that it should include <sys/select.h> in order to
5436 get the definition of struct timeval.
5437 "i_syssockio"
5439 From i_sysioctl.U:
5440 This variable conditionally defines "I_SYS_SOCKIO" to indicate to
5442 the C program that socket ioctl codes may be found in
5443 <sys/sockio.h> instead of <sys/ioctl.h>.
5444 "i_sysstat"
5446 From i_sysstat.U:
5447 This variable conditionally defines the "I_SYS_STAT" symbol, and
5449 indicates whether a C program should include <sys/stat.h>.
5450 "i_sysstatfs"
5452 From i_sysstatfs.U:
5453 This variable conditionally defines the "I_SYSSTATFS" symbol, and
5455 indicates whether a C program should include <sys/statfs.h>.
5456 "i_sysstatvfs"
5458 From i_sysstatvfs.U:
5459 This variable conditionally defines the "I_SYSSTATVFS" symbol, and
5461 indicates whether a C program should include <sys/statvfs.h>.
5462 "i_systime"
5464 From i_time.U:
5465 This variable conditionally defines "I_SYS_TIME", which indicates
5467 to the C program that it should include <sys/time.h>.
5468 "i_systimek"
5470 From i_time.U:
5471 This variable conditionally defines "I_SYS_TIME_KERNEL", which
5473 indicates to the C program that it should include <sys/time.h> with
5474 "KERNEL" defined.
5475 "i_systimes"
5477 From i_systimes.U:
5478 This variable conditionally defines the "I_SYS_TIMES" symbol, and
5480 indicates whether a C program should include <sys/times.h>.
5481 "i_systypes"
5483 From i_systypes.U:
5484 This variable conditionally defines the "I_SYS_TYPES" symbol, and
5486 indicates whether a C program should include <sys/types.h>.
5487 "i_sysuio"
5489 From i_sysuio.U:
5490 This variable conditionally defines the "I_SYSUIO" symbol, and
5492 indicates whether a C program should include <sys/uio.h>.
5493 "i_sysun"
5495 From i_sysun.U:
5496 This variable conditionally defines "I_SYS_UN", which indicates to
5498 the C program that it should include <sys/un.h> to get "UNIX"
5499 domain socket definitions.
5500 "i_sysutsname"
5502 From i_sysutsname.U:
5503 This variable conditionally defines the "I_SYSUTSNAME" symbol, and
5505 indicates whether a C program should include <sys/utsname.h>.
5506 "i_sysvfs"
5508 From i_sysvfs.U:
5509 This variable conditionally defines the "I_SYSVFS" symbol, and
5511 indicates whether a C program should include <sys/vfs.h>.
5512 "i_syswait"
5514 From i_syswait.U:
5515 This variable conditionally defines "I_SYS_WAIT", which indicates
5517 to the C program that it should include <sys/wait.h>.
5518 "i_termio"
5520 From i_termio.U:
5521 This variable conditionally defines the "I_TERMIO" symbol, which
5523 indicates to the C program that it should include <termio.h> rather
5524 than <sgtty.h>.
5525 "i_termios"
5527 From i_termio.U:
5528 This variable conditionally defines the "I_TERMIOS" symbol, which
5530 indicates to the C program that the "POSIX" <termios.h> file is to
5531 be included.
5532 "i_time"
5534 From i_time.U:
5535 This variable unconditionally defines "I_TIME", which indicates to
5537 the C program that it should include <time.h>.
5538 "i_unistd"
5540 From i_unistd.U:
5541 This variable conditionally defines the "I_UNISTD" symbol, and
5543 indicates whether a C program should include <unistd.h>.
5544 "i_ustat"
5546 From i_ustat.U:
5547 This variable conditionally defines the "I_USTAT" symbol, and
5549 indicates whether a C program should include <ustat.h>.
5550 "i_utime"
5552 From i_utime.U:
5553 This variable conditionally defines the "I_UTIME" symbol, and
5555 indicates whether a C program should include <utime.h>.
5556 "i_vfork"
5558 From i_vfork.U:
5559 This variable conditionally defines the "I_VFORK" symbol, and
5561 indicates whether a C program should include vfork.h.
5562 "i_wchar"
5564 From i_wchar.U:
5565 This variable conditionally defines the "I_WCHAR" symbol, that
5567 indicates whether a C program may include <wchar.h>.
5568 "i_xlocale"
5570 From d_newlocale.U:
5571 This symbol, if defined, indicates to the C program that it should
5573 include <xlocale.h> to get uselocale() and its friends
5574 "ignore_versioned_solibs"
5576 From libs.U:
5577 This variable should be non-empty if non-versioned shared libraries
5579 (libfoo.so.x.y) are to be ignored (because they cannot be linked
5580 against).
5581 "inc_version_list"
5583 From inc_version_list.U:
5584 This variable specifies the list of subdirectories in over which
5586 perl.c:incpush() and lib/lib.pm will automatically search when
5587 adding directories to @"INC". The elements in the list are
5588 separated by spaces. This is only useful if you have a perl
5589 library directory tree structured like the default one. See
5590 "INSTALL" for how this works. The versioned site_perl directory
5591 was introduced in 5.005, so that is the lowest possible value.
5592 This list includes architecture-dependent directories back to
5594 version $api_versionstring (e.g. 5.5.640) and architecture-
5595 independent directories all the way back to 5.005.
5596 "inc_version_list_init"
5598 From inc_version_list.U:
5599 This variable holds the same list as inc_version_list, but each
5601 item is enclosed in double quotes and separated by commas, suitable
5602 for use in the "PERL_INC_VERSION_LIST" initialization.
5603 "incpath"
5605 From usrinc.U:
5606 This variable must precede the normal include path to get the right
5608 one, as in $incpath/usr/include or $incpath/usr/lib. Value can be
5609 "" or /bsd43 on mips.
5610 "incpth"
5612 From libpth.U:
5613 This variable must precede the normal include path to get the right
5615 one, as in $incpath/usr/include or $incpath/usr/lib. Value can be
5616 "" or /bsd43 on mips.
5617 "inews"
5619 From Loc.U:
5620 This variable is defined but not used by Configure. The value is
5622 the empty string and is not useful.
5623 "initialinstalllocation"
5625 From bin.U:
5626 When userelocatableinc is true, this variable holds the location
5628 that make install should copy the perl binary to, with all the run-
5629 time relocatable paths calculated from this at install time. When
5630 used, it is initialized to the original value of binexp, and then
5631 binexp is set to .../, as the other binaries are found relative to
5632 the perl binary.
5633 "installarchlib"
5635 From archlib.U:
5636 This variable is really the same as archlibexp but may differ on
5638 those systems using "AFS". For extra portability, only this
5639 variable should be used in makefiles.
5640 "installbin"
5642 From bin.U:
5643 This variable is the same as binexp unless "AFS" is running in
5645 which case the user is explicitly prompted for it. This variable
5646 should always be used in your makefiles for maximum portability.
5647 "installhtml1dir"
5649 From html1dir.U:
5650 This variable is really the same as html1direxp, unless you are
5652 using a different installprefix. For extra portability, you should
5653 only use this variable within your makefiles.
5654 "installhtml3dir"
5656 From html3dir.U:
5657 This variable is really the same as html3direxp, unless you are
5659 using a different installprefix. For extra portability, you should
5660 only use this variable within your makefiles.
5661 "installman1dir"
5663 From man1dir.U:
5664 This variable is really the same as man1direxp, unless you are
5666 using "AFS" in which case it points to the read/write location
5667 whereas man1direxp only points to the read-only access location.
5668 For extra portability, you should only use this variable within
5669 your makefiles.
5670 "installman3dir"
5672 From man3dir.U:
5673 This variable is really the same as man3direxp, unless you are
5675 using "AFS" in which case it points to the read/write location
5676 whereas man3direxp only points to the read-only access location.
5677 For extra portability, you should only use this variable within
5678 your makefiles.
5679 "installprefix"
5681 From installprefix.U:
5682 This variable holds the name of the directory below which "make
5684 install" will install the package. For most users, this is the
5685 same as prefix. However, it is useful for installing the software
5686 into a different (usually temporary) location after which it can be
5687 bundled up and moved somehow to the final location specified by
5688 prefix.
5689 "installprefixexp"
5691 From installprefix.U:
5692 This variable holds the full absolute path of installprefix with
5694 all ~-expansion done.
5695 "installprivlib"
5697 From privlib.U:
5698 This variable is really the same as privlibexp but may differ on
5700 those systems using "AFS". For extra portability, only this
5701 variable should be used in makefiles.
5702 "installscript"
5704 From scriptdir.U:
5705 This variable is usually the same as scriptdirexp, unless you are
5707 on a system running "AFS", in which case they may differ slightly.
5708 You should always use this variable within your makefiles for
5709 portability.
5710 "installsitearch"
5712 From sitearch.U:
5713 This variable is really the same as sitearchexp but may differ on
5715 those systems using "AFS". For extra portability, only this
5716 variable should be used in makefiles.
5717 "installsitebin"
5719 From sitebin.U:
5720 This variable is usually the same as sitebinexp, unless you are on
5722 a system running "AFS", in which case they may differ slightly. You
5723 should always use this variable within your makefiles for
5724 portability.
5725 "installsitehtml1dir"
5727 From sitehtml1dir.U:
5728 This variable is really the same as sitehtml1direxp, unless you are
5730 using "AFS" in which case it points to the read/write location
5731 whereas html1direxp only points to the read-only access location.
5732 For extra portability, you should only use this variable within
5733 your makefiles.
5734 "installsitehtml3dir"
5736 From sitehtml3dir.U:
5737 This variable is really the same as sitehtml3direxp, unless you are
5739 using "AFS" in which case it points to the read/write location
5740 whereas html3direxp only points to the read-only access location.
5741 For extra portability, you should only use this variable within
5742 your makefiles.
5743 "installsitelib"
5745 From sitelib.U:
5746 This variable is really the same as sitelibexp but may differ on
5748 those systems using "AFS". For extra portability, only this
5749 variable should be used in makefiles.
5750 "installsiteman1dir"
5752 From siteman1dir.U:
5753 This variable is really the same as siteman1direxp, unless you are
5755 using "AFS" in which case it points to the read/write location
5756 whereas man1direxp only points to the read-only access location.
5757 For extra portability, you should only use this variable within
5758 your makefiles.
5759 "installsiteman3dir"
5761 From siteman3dir.U:
5762 This variable is really the same as siteman3direxp, unless you are
5764 using "AFS" in which case it points to the read/write location
5765 whereas man3direxp only points to the read-only access location.
5766 For extra portability, you should only use this variable within
5767 your makefiles.
5768 "installsitescript"
5770 From sitescript.U:
5771 This variable is usually the same as sitescriptexp, unless you are
5773 on a system running "AFS", in which case they may differ slightly.
5774 You should always use this variable within your makefiles for
5775 portability.
5776 "installstyle"
5778 From installstyle.U:
5779 This variable describes the "style" of the perl installation. This
5781 is intended to be useful for tools that need to manipulate entire
5782 perl distributions. Perl itself doesn't use this to find its
5783 libraries -- the library directories are stored directly in
5784 Config.pm. Currently, there are only two styles: "lib" and
5785 lib/perl5. The default library locations (e.g. privlib, sitelib)
5786 are either $prefix/lib or $prefix/lib/perl5. The former is useful
5787 if $prefix is a directory dedicated to perl (e.g. /opt/perl), while
5788 the latter is useful if $prefix is shared by many packages, e.g. if
5789 $prefix=/usr/local.
5790 Unfortunately, while this "style" variable is used to set defaults
5792 for all three directory hierarchies (core, vendor, and site), there
5793 is no guarantee that the same style is actually appropriate for all
5794 those directories. For example, $prefix might be /opt/perl, but
5795 $siteprefix might be /usr/local. (Perhaps, in retrospect, the
5796 "lib" style should never have been supported, but it did seem like
5797 a nice idea at the time.)
5798 The situation is even less clear for tools such as MakeMaker that
5800 can be used to install additional modules into non-standard places.
5801 For example, if a user intends to install a module into a private
5802 directory (perhaps by setting "PREFIX" on the Makefile.PL command
5803 line), then there is no reason to assume that the Configure-time
5804 $installstyle setting will be relevant for that "PREFIX".
5805 This may later be extended to include other information, so be
5807 careful with pattern-matching on the results.
5808 For compatibility with perl5.005 and earlier, the default setting
5810 is based on whether or not $prefix contains the string "perl".
5811 "installusrbinperl"
5813 From instubperl.U:
5814 This variable tells whether Perl should be installed also as
5816 /usr/bin/perl in addition to $installbin/perl
5817 "installvendorarch"
5819 From vendorarch.U:
5820 This variable is really the same as vendorarchexp but may differ on
5822 those systems using "AFS". For extra portability, only this
5823 variable should be used in makefiles.
5824 "installvendorbin"
5826 From vendorbin.U:
5827 This variable is really the same as vendorbinexp but may differ on
5829 those systems using "AFS". For extra portability, only this
5830 variable should be used in makefiles.
5831 "installvendorhtml1dir"
5833 From vendorhtml1dir.U:
5834 This variable is really the same as vendorhtml1direxp but may
5836 differ on those systems using "AFS". For extra portability, only
5837 this variable should be used in makefiles.
5838 "installvendorhtml3dir"
5840 From vendorhtml3dir.U:
5841 This variable is really the same as vendorhtml3direxp but may
5843 differ on those systems using "AFS". For extra portability, only
5844 this variable should be used in makefiles.
5845 "installvendorlib"
5847 From vendorlib.U:
5848 This variable is really the same as vendorlibexp but may differ on
5850 those systems using "AFS". For extra portability, only this
5851 variable should be used in makefiles.
5852 "installvendorman1dir"
5854 From vendorman1dir.U:
5855 This variable is really the same as vendorman1direxp but may differ
5857 on those systems using "AFS". For extra portability, only this
5858 variable should be used in makefiles.
5859 "installvendorman3dir"
5861 From vendorman3dir.U:
5862 This variable is really the same as vendorman3direxp but may differ
5864 on those systems using "AFS". For extra portability, only this
5865 variable should be used in makefiles.
5866 "installvendorscript"
5868 From vendorscript.U:
5869 This variable is really the same as vendorscriptexp but may differ
5871 on those systems using "AFS". For extra portability, only this
5872 variable should be used in makefiles.
5873 "intsize"
5875 From intsize.U:
5876 This variable contains the value of the "INTSIZE" symbol, which
5878 indicates to the C program how many bytes there are in an int.
5879 "issymlink"
5881 From issymlink.U:
5882 This variable holds the test command to test for a symbolic link
5884 (if they are supported). Typical values include "test -h" and
5885 "test -L".
5886 "ivdformat"
5888 From perlxvf.U:
5889 This variable contains the format string used for printing a Perl
5891 "IV" as a signed decimal integer.
5892 "ivsize"
5894 From perlxv.U:
5895 This variable is the size of an "IV" in bytes.
5897 "ivtype"
5899 From perlxv.U:
5900 This variable contains the C type used for Perl's "IV".
5902 k
5904 "known_extensions"
5905 From Extensions.U:
5906 This variable holds a list of all extensions (both "XS" and non-xs)
5908 included in the package source distribution. This information is
5909 only really of use during the Perl build, as the list makes no
5910 distinction between extensions which were build and installed, and
5911 those which where not. See "extensions" for the list of extensions
5912 actually built and available.
5913 "ksh"
5915 From Loc.U:
5916 This variable is defined but not used by Configure. The value is
5918 the empty string and is not useful.
5919 l
5921 "ld"
5922 From dlsrc.U:
5923 This variable indicates the program to be used to link libraries
5925 for dynamic loading. On some systems, it is "ld". On "ELF"
5926 systems, it should be $cc. Mostly, we'll try to respect the hint
5927 file setting.
5928 "ld_can_script"
5930 From dlsrc.U:
5931 This variable shows if the loader accepts scripts in the form of
5933 -Wl,--version-script=ld.script. This is currently only supported
5934 for "GNU" ld on "ELF" in dynamic loading builds.
5935 "lddlflags"
5937 From dlsrc.U:
5938 This variable contains any special flags that might need to be
5940 passed to $ld to create a shared library suitable for dynamic
5941 loading. It is up to the makefile to use it. For hpux, it should
5942 be "-b". For sunos 4.1, it is empty.
5943 "ldflags"
5945 From ccflags.U:
5946 This variable contains any additional C loader flags desired by the
5948 user. It is up to the Makefile to use this.
5949 "ldflags_uselargefiles"
5951 From uselfs.U:
5952 This variable contains the loader flags needed by large file builds
5954 and added to ldflags by hints files.
5955 "ldlibpthname"
5957 From libperl.U:
5958 This variable holds the name of the shared library search path,
5960 often "LD_LIBRARY_PATH". To get an empty string, the hints file
5961 must set this to "none".
5962 "less"
5964 From Loc.U:
5965 This variable is used internally by Configure to determine the full
5967 pathname (if any) of the less program. After Configure runs, the
5968 value is reset to a plain "less" and is not useful.
5969 "lib_ext"
5971 From Unix.U:
5972 This is an old synonym for _a.
5974 "libc"
5976 From libc.U:
5977 This variable contains the location of the C library.
5979 "libperl"
5981 From libperl.U:
5982 The perl executable is obtained by linking perlmain.c with libperl,
5984 any static extensions (usually just DynaLoader), and any other
5985 libraries needed on this system. libperl is usually libperl.a, but
5986 can also be libperl.so.xxx if the user wishes to build a perl
5987 executable with a shared library.
5988 "libpth"
5990 From libpth.U:
5991 This variable holds the general path (space-separated) used to find
5993 libraries. It is intended to be used by other units.
5994 "libs"
5996 From libs.U:
5997 This variable holds the additional libraries we want to use. It is
5999 up to the Makefile to deal with it. The list can be empty.
6000 "libsdirs"
6002 From libs.U:
6003 This variable holds the directory names aka dirnames of the
6005 libraries we found and accepted, duplicates are removed.
6006 "libsfiles"
6008 From libs.U:
6009 This variable holds the filenames aka basenames of the libraries we
6011 found and accepted.
6012 "libsfound"
6014 From libs.U:
6015 This variable holds the full pathnames of the libraries we found
6017 and accepted.
6018 "libspath"
6020 From libs.U:
6021 This variable holds the directory names probed for libraries.
6023 "libswanted"
6025 From Myinit.U:
6026 This variable holds a list of all the libraries we want to search.
6028 The order is chosen to pick up the c library ahead of ucb or bsd
6029 libraries for SVR4.
6030 "libswanted_uselargefiles"
6032 From uselfs.U:
6033 This variable contains the libraries needed by large file builds
6035 and added to ldflags by hints files. It is a space separated list
6036 of the library names without the "lib" prefix or any suffix, just
6037 like libswanted..
6038 "line"
6040 From Loc.U:
6041 This variable is defined but not used by Configure. The value is
6043 the empty string and is not useful.
6044 "lint"
6046 From Loc.U:
6047 This variable is defined but not used by Configure. The value is
6049 the empty string and is not useful.
6050 "lkflags"
6052 From ccflags.U:
6053 This variable contains any additional C partial linker flags
6055 desired by the user. It is up to the Makefile to use this.
6056 "ln"
6058 From Loc.U:
6059 This variable is used internally by Configure to determine the full
6061 pathname (if any) of the ln program. After Configure runs, the
6062 value is reset to a plain "ln" and is not useful.
6063 "lns"
6065 From lns.U:
6066 This variable holds the name of the command to make symbolic links
6068 (if they are supported). It can be used in the Makefile. It is
6069 either "ln -s" or "ln"
6070 "localtime_r_proto"
6072 From d_localtime_r.U:
6073 This variable encodes the prototype of localtime_r. It is zero if
6075 d_localtime_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6076 macros of reentr.h if d_localtime_r is defined.
6077 "locincpth"
6079 From ccflags.U:
6080 This variable contains a list of additional directories to be
6082 searched by the compiler. The appropriate "-I" directives will be
6083 added to ccflags. This is intended to simplify setting local
6084 directories from the Configure command line. It's not much, but it
6085 parallels the loclibpth stuff in libpth.U.
6086 "loclibpth"
6088 From libpth.U:
6089 This variable holds the paths (space-separated) used to find local
6091 libraries. It is prepended to libpth, and is intended to be easily
6092 set from the command line.
6093 "longdblinfbytes"
6095 From infnan.U:
6096 This variable contains comma-separated list of hexadecimal bytes
6098 for the long double precision infinity.
6099 "longdblkind"
6101 From d_longdbl.U:
6102 This variable, if defined, encodes the type of a long double: 0 =
6104 double, 1 = "IEEE" 754 128-bit little endian, 2 = "IEEE" 754
6105 128-bit big endian, 3 = x86 80-bit little endian, 4 = x86 80-bit
6106 big endian, 5 = double-double 128-bit little endian, 6 = double-
6107 double 128-bit big endian, 7 = 128-bit mixed-endian double-double
6108 (64-bit LEs in "BE"), 8 = 128-bit mixed-endian double-double
6109 (64-bit BEs in "LE"), 9 = 128-bit "PDP"-style mixed-endian long
6110 doubles, -1 = unknown format.
6111 "longdblmantbits"
6113 From mantbits.U:
6114 This symbol, if defined, tells how many mantissa bits there are in
6116 long double precision floating point format. Note that this can be
6117 "LDBL_MANT_DIG" minus one, since "LDBL_MANT_DIG" can include the
6118 "IEEE" 754 implicit bit. The common x86-style 80-bit long double
6119 does not have an implicit bit.
6120 "longdblnanbytes"
6122 From infnan.U:
6123 This variable contains comma-separated list of hexadecimal bytes
6125 for the long double precision not-a-number.
6126 "longdblsize"
6128 From d_longdbl.U:
6129 This variable contains the value of the "LONG_DOUBLESIZE" symbol,
6131 which indicates to the C program how many bytes there are in a long
6132 double, if this system supports long doubles. Note that this is
6133 sizeof(long double), which may include unused bytes.
6134 "longlongsize"
6136 From d_longlong.U:
6137 This variable contains the value of the "LONGLONGSIZE" symbol,
6139 which indicates to the C program how many bytes there are in a long
6140 long, if this system supports long long.
6141 "longsize"
6143 From intsize.U:
6144 This variable contains the value of the "LONGSIZE" symbol, which
6146 indicates to the C program how many bytes there are in a long.
6147 "lp"
6149 From Loc.U:
6150 This variable is defined but not used by Configure. The value is
6152 the empty string and is not useful.
6153 "lpr"
6155 From Loc.U:
6156 This variable is defined but not used by Configure. The value is
6158 the empty string and is not useful.
6159 "ls"
6161 From Loc.U:
6162 This variable is used internally by Configure to determine the full
6164 pathname (if any) of the ls program. After Configure runs, the
6165 value is reset to a plain "ls" and is not useful.
6166 "lseeksize"
6168 From lseektype.U:
6169 This variable defines lseektype to be something like off_t, long,
6171 or whatever type is used to declare lseek offset's type in the
6172 kernel (which also appears to be lseek's return type).
6173 "lseektype"
6175 From lseektype.U:
6176 This variable defines lseektype to be something like off_t, long,
6178 or whatever type is used to declare lseek offset's type in the
6179 kernel (which also appears to be lseek's return type).
6180 m
6182 "mail"
6183 From Loc.U:
6184 This variable is defined but not used by Configure. The value is
6186 the empty string and is not useful.
6187 "mailx"
6189 From Loc.U:
6190 This variable is defined but not used by Configure. The value is
6192 the empty string and is not useful.
6193 "make"
6195 From Loc.U:
6196 This variable is used internally by Configure to determine the full
6198 pathname (if any) of the make program. After Configure runs, the
6199 value is reset to a plain "make" and is not useful.
6200 "make_set_make"
6202 From make.U:
6203 Some versions of "make" set the variable "MAKE". Others do not.
6205 This variable contains the string to be included in Makefile.SH so
6206 that "MAKE" is set if needed, and not if not needed. Possible
6207 values are:
6208 make_set_make="#" # If your make program handles this for
6210 you,
6211 make_set_make="MAKE=$make" # if it doesn't.
6213 This uses a comment character so that we can distinguish a "set"
6215 value (from a previous config.sh or Configure "-D" option) from an
6216 uncomputed value.
6217 "mallocobj"
6219 From mallocsrc.U:
6220 This variable contains the name of the malloc.o that this package
6222 generates, if that malloc.o is preferred over the system malloc.
6223 Otherwise the value is null. This variable is intended for
6224 generating Makefiles. See mallocsrc.
6225 "mallocsrc"
6227 From mallocsrc.U:
6228 This variable contains the name of the malloc.c that comes with the
6230 package, if that malloc.c is preferred over the system malloc.
6231 Otherwise the value is null. This variable is intended for
6232 generating Makefiles.
6233 "malloctype"
6235 From mallocsrc.U:
6236 This variable contains the kind of ptr returned by malloc and
6238 realloc.
6239 "man1dir"
6241 From man1dir.U:
6242 This variable contains the name of the directory in which manual
6244 source pages are to be put. It is the responsibility of the
6245 Makefile.SH to get the value of this into the proper command. You
6246 must be prepared to do the ~name expansion yourself.
6247 "man1direxp"
6249 From man1dir.U:
6250 This variable is the same as the man1dir variable, but is filename
6252 expanded at configuration time, for convenient use in makefiles.
6253 "man1ext"
6255 From man1dir.U:
6256 This variable contains the extension that the manual page should
6258 have: one of "n", "l", or 1. The Makefile must supply the .. See
6259 man1dir.
6260 "man3dir"
6262 From man3dir.U:
6263 This variable contains the name of the directory in which manual
6265 source pages are to be put. It is the responsibility of the
6266 Makefile.SH to get the value of this into the proper command. You
6267 must be prepared to do the ~name expansion yourself.
6268 "man3direxp"
6270 From man3dir.U:
6271 This variable is the same as the man3dir variable, but is filename
6273 expanded at configuration time, for convenient use in makefiles.
6274 "man3ext"
6276 From man3dir.U:
6277 This variable contains the extension that the manual page should
6279 have: one of "n", "l", or 3. The Makefile must supply the .. See
6280 man3dir.
6281 "mips_type"
6283 From usrinc.U:
6284 This variable holds the environment type for the mips system.
6286 Possible values are "BSD 4.3" and "System V".
6287 "mistrustnm"
6289 From Csym.U:
6290 This variable can be used to establish a fallthrough for the cases
6292 where nm fails to find a symbol. If usenm is false or usenm is
6293 true and mistrustnm is false, this variable has no effect. If
6294 usenm is true and mistrustnm is "compile", a test program will be
6295 compiled to try to find any symbol that can't be located via nm
6296 lookup. If mistrustnm is "run", the test program will be run as
6297 well as being compiled.
6298 "mkdir"
6300 From Loc.U:
6301 This variable is used internally by Configure to determine the full
6303 pathname (if any) of the mkdir program. After Configure runs, the
6304 value is reset to a plain "mkdir" and is not useful.
6305 "mmaptype"
6307 From d_mmap.U:
6308 This symbol contains the type of pointer returned by mmap() (and
6310 simultaneously the type of the first argument). It can be "void *"
6311 or "caddr_t".
6312 "modetype"
6314 From modetype.U:
6315 This variable defines modetype to be something like mode_t, int,
6317 unsigned short, or whatever type is used to declare file modes for
6318 system calls.
6319 "more"
6321 From Loc.U:
6322 This variable is used internally by Configure to determine the full
6324 pathname (if any) of the more program. After Configure runs, the
6325 value is reset to a plain "more" and is not useful.
6326 "multiarch"
6328 From multiarch.U:
6329 This variable conditionally defines the "MULTIARCH" symbol which
6331 signifies the presence of multiplatform files. This is normally
6332 set by hints files.
6333 "mv"
6335 From Loc.U:
6336 This variable is defined but not used by Configure. The value is
6338 the empty string and is not useful.
6339 "myarchname"
6341 From archname.U:
6342 This variable holds the architecture name computed by Configure in
6344 a previous run. It is not intended to be perused by any user and
6345 should never be set in a hint file.
6346 "mydomain"
6348 From myhostname.U:
6349 This variable contains the eventual value of the "MYDOMAIN" symbol,
6351 which is the domain of the host the program is going to run on.
6352 The domain must be appended to myhostname to form a complete host
6353 name. The dot comes with mydomain, and need not be supplied by the
6354 program.
6355 "myhostname"
6357 From myhostname.U:
6358 This variable contains the eventual value of the "MYHOSTNAME"
6360 symbol, which is the name of the host the program is going to run
6361 on. The domain is not kept with hostname, but must be gotten from
6362 mydomain. The dot comes with mydomain, and need not be supplied by
6363 the program.
6364 "myuname"
6366 From Oldconfig.U:
6367 The output of "uname -a" if available, otherwise the hostname. The
6369 whole thing is then lower-cased and slashes and single quotes are
6370 removed.
6371 n
6373 "n" From n.U:
6374 This variable contains the "-n" flag if that is what causes the
6376 echo command to suppress newline. Otherwise it is null. Correct
6377 usage is $echo $n "prompt for a question: $c".
6378 "need_va_copy"
6380 From need_va_copy.U:
6381 This symbol, if defined, indicates that the system stores the
6383 variable argument list datatype, va_list, in a format that cannot
6384 be copied by simple assignment, so that some other means must be
6385 used when copying is required. As such systems vary in their
6386 provision (or non-provision) of copying mechanisms, handy.h defines
6387 a platform- "independent" macro, Perl_va_copy(src, dst), to do the
6388 job.
6389 "netdb_hlen_type"
6391 From netdbtype.U:
6392 This variable holds the type used for the 2nd argument to
6394 gethostbyaddr(). Usually, this is int or size_t or unsigned. This
6395 is only useful if you have gethostbyaddr(), naturally.
6396 "netdb_host_type"
6398 From netdbtype.U:
6399 This variable holds the type used for the 1st argument to
6401 gethostbyaddr(). Usually, this is char * or void *, possibly with
6402 or without a const prefix. This is only useful if you have
6403 gethostbyaddr(), naturally.
6404 "netdb_name_type"
6406 From netdbtype.U:
6407 This variable holds the type used for the argument to
6409 gethostbyname(). Usually, this is char * or const char *. This is
6410 only useful if you have gethostbyname(), naturally.
6411 "netdb_net_type"
6413 From netdbtype.U:
6414 This variable holds the type used for the 1st argument to
6416 getnetbyaddr(). Usually, this is int or long. This is only useful
6417 if you have getnetbyaddr(), naturally.
6418 "nm"
6420 From Loc.U:
6421 This variable is used internally by Configure to determine the full
6423 pathname (if any) of the nm program. After Configure runs, the
6424 value is reset to a plain "nm" and is not useful.
6425 "nm_opt"
6427 From usenm.U:
6428 This variable holds the options that may be necessary for nm.
6430 "nm_so_opt"
6432 From usenm.U:
6433 This variable holds the options that may be necessary for nm to
6435 work on a shared library but that can not be used on an archive
6436 library. Currently, this is only used by Linux, where nm --dynamic
6437 is *required* to get symbols from an "ELF" library which has been
6438 stripped, but nm --dynamic is *fatal* on an archive library. Maybe
6439 Linux should just always set usenm=false.
6440 "nonxs_ext"
6442 From Extensions.U:
6443 This variable holds a list of all non-xs extensions built and
6445 installed by the package. By default, all non-xs extensions
6446 distributed will be built, with the exception of platform-specific
6447 extensions (currently only one "VMS" specific extension).
6448 "nroff"
6450 From Loc.U:
6451 This variable is used internally by Configure to determine the full
6453 pathname (if any) of the nroff program. After Configure runs, the
6454 value is reset to a plain "nroff" and is not useful.
6455 "nv_overflows_integers_at"
6457 From perlxv.U:
6458 This variable gives the largest integer value that NVs can hold as
6460 a constant floating point expression. If it could not be
6461 determined, it holds the value 0.
6462 "nv_preserves_uv_bits"
6464 From perlxv.U:
6465 This variable indicates how many of bits type uvtype a variable
6467 nvtype can preserve.
6468 "nveformat"
6470 From perlxvf.U:
6471 This variable contains the format string used for printing a Perl
6473 "NV" using %e-ish floating point format.
6474 "nvEUformat"
6476 From perlxvf.U:
6477 This variable contains the format string used for printing a Perl
6479 "NV" using %E-ish floating point format.
6480 "nvfformat"
6482 From perlxvf.U:
6483 This variable contains the format string used for printing a Perl
6485 "NV" using %f-ish floating point format.
6486 "nvFUformat"
6488 From perlxvf.U:
6489 This variable contains the format string used for printing a Perl
6491 "NV" using %F-ish floating point format.
6492 "nvgformat"
6494 From perlxvf.U:
6495 This variable contains the format string used for printing a Perl
6497 "NV" using %g-ish floating point format.
6498 "nvGUformat"
6500 From perlxvf.U:
6501 This variable contains the format string used for printing a Perl
6503 "NV" using %G-ish floating point format.
6504 "nvmantbits"
6506 From mantbits.U:
6507 This variable tells how many bits the mantissa of a Perl "NV" has,
6509 not including the possible implicit bit.
6510 "nvsize"
6512 From perlxv.U:
6513 This variable is the size of a Perl "NV" in bytes. Note that some
6515 floating point formats have unused bytes.
6516 "nvtype"
6518 From perlxv.U:
6519 This variable contains the C type used for Perl's "NV".
6521 o
6523 "o_nonblock"
6524 From nblock_io.U:
6525 This variable bears the symbol value to be used during open() or
6527 fcntl() to turn on non-blocking I/O for a file descriptor. If you
6528 wish to switch between blocking and non-blocking, you may try
6529 ioctl("FIOSNBIO") instead, but that is only supported by some
6530 devices.
6531 "obj_ext"
6533 From Unix.U:
6534 This is an old synonym for _o.
6536 "old_pthread_create_joinable"
6538 From d_pthrattrj.U:
6539 This variable defines the constant to use for creating joinable
6541 (aka undetached) pthreads. Unused if pthread.h defines
6542 "PTHREAD_CREATE_JOINABLE". If used, possible values are
6543 "PTHREAD_CREATE_UNDETACHED" and "__UNDETACHED".
6544 "optimize"
6546 From ccflags.U:
6547 This variable contains any optimizer/debugger flag that should be
6549 used. It is up to the Makefile to use it.
6550 "orderlib"
6552 From orderlib.U:
6553 This variable is "true" if the components of libraries must be
6555 ordered (with `lorder $* | tsort`) before placing them in an
6556 archive. Set to "false" if ranlib or ar can generate random
6557 libraries.
6558 "osname"
6560 From Oldconfig.U:
6561 This variable contains the operating system name (e.g. sunos,
6563 solaris, hpux, etc.). It can be useful later on for setting
6564 defaults. Any spaces are replaced with underscores. It is set to
6565 a null string if we can't figure it out.
6566 "osvers"
6568 From Oldconfig.U:
6569 This variable contains the operating system version (e.g. 4.1.3,
6571 5.2, etc.). It is primarily used for helping select an appropriate
6572 hints file, but might be useful elsewhere for setting defaults. It
6573 is set to '' if we can't figure it out. We try to be flexible
6574 about how much of the version number to keep, e.g. if 4.1.1, 4.1.2,
6575 and 4.1.3 are essentially the same for this package, hints files
6576 might just be os_4.0 or os_4.1, etc., not keeping separate files
6577 for each little release.
6578 "otherlibdirs"
6580 From otherlibdirs.U:
6581 This variable contains a colon-separated set of paths for the perl
6583 binary to search for additional library files or modules. These
6584 directories will be tacked to the end of @"INC". Perl will
6585 automatically search below each path for version- and architecture-
6586 specific directories. See inc_version_list for more details. A
6587 value of " " means "none" and is used to preserve this value for
6588 the next run through Configure.
6589 p
6591 "package"
6592 From package.U:
6593 This variable contains the name of the package being constructed.
6595 It is primarily intended for the use of later Configure units.
6596 "pager"
6598 From pager.U:
6599 This variable contains the name of the preferred pager on the
6601 system. Usual values are (the full pathnames of) more, less, pg,
6602 or cat.
6603 "passcat"
6605 From nis.U:
6606 This variable contains a command that produces the text of the
6608 /etc/passwd file. This is normally "cat /etc/passwd", but can be
6609 "ypcat passwd" when "NIS" is used. On some systems, such as os390,
6610 there may be no equivalent command, in which case this variable is
6611 unset.
6612 "patchlevel"
6614 From patchlevel.U:
6615 The patchlevel level of this package. The value of patchlevel
6617 comes from the patchlevel.h file. In a version number such as
6618 5.6.1, this is the 6. In patchlevel.h, this is referred to as
6619 "PERL_VERSION".
6620 "path_sep"
6622 From Unix.U:
6623 This is an old synonym for p_ in Head.U, the character used to
6625 separate elements in the command shell search "PATH".
6626 "perl"
6628 From Loc.U:
6629 This variable is used internally by Configure to determine the full
6631 pathname (if any) of the perl program. After Configure runs, the
6632 value is reset to a plain "perl" and is not useful.
6633 "perl5"
6635 From perl5.U:
6636 This variable contains the full path (if any) to a previously
6638 installed perl5.005 or later suitable for running the script to
6639 determine inc_version_list.
6640 P
6642 "PERL_API_REVISION"
6643 From patchlevel.h:
6644 This number describes the earliest compatible "PERL_REVISION" of
6646 Perl ("compatibility" here being defined as sufficient binary/"API"
6647 compatibility to run "XS" code built with the older version).
6648 Normally this does not change across maintenance releases. Please
6649 read the comment in patchlevel.h.
6650 "PERL_API_SUBVERSION"
6652 From patchlevel.h:
6653 This number describes the earliest compatible "PERL_SUBVERSION" of
6655 Perl ("compatibility" here being defined as sufficient binary/"API"
6656 compatibility to run "XS" code built with the older version).
6657 Normally this does not change across maintenance releases. Please
6658 read the comment in patchlevel.h.
6659 "PERL_API_VERSION"
6661 From patchlevel.h:
6662 This number describes the earliest compatible "PERL_VERSION" of
6664 Perl ("compatibility" here being defined as sufficient binary/"API"
6665 compatibility to run "XS" code built with the older version).
6666 Normally this does not change across maintenance releases. Please
6667 read the comment in patchlevel.h.
6668 "PERL_CONFIG_SH"
6670 From Oldsyms.U:
6671 This is set to "true" in config.sh so that a shell script sourcing
6673 config.sh can tell if it has been sourced already.
6674 "PERL_PATCHLEVEL"
6676 From Oldsyms.U:
6677 This symbol reflects the patchlevel, if available. Will usually
6679 come from the .patch file, which is available when the perl source
6680 tree was fetched with rsync.
6681 "perl_patchlevel"
6683 From patchlevel.U:
6684 This is the Perl patch level, a numeric change identifier, as
6686 defined by whichever source code maintenance system is used to
6687 maintain the patches; currently Perforce. It does not correlate
6688 with the Perl version numbers or the maintenance versus development
6689 dichotomy except by also being increasing.
6690 "PERL_REVISION"
6692 From Oldsyms.U:
6693 In a Perl version number such as 5.6.2, this is the 5. This value
6695 is manually set in patchlevel.h
6696 "perl_static_inline"
6698 From d_static_inline.U:
6699 This variable defines the "PERL_STATIC_INLINE" symbol to the best-
6701 guess incantation to use for static inline functions.
6702 Possibilities include static inline (c99) static __inline__
6703 (gcc -ansi) static __inline ("MSVC") static _inline (older
6704 "MSVC") static (c89 compilers)
6705 "PERL_SUBVERSION"
6707 From Oldsyms.U:
6708 In a Perl version number such as 5.6.2, this is the 2. Values
6710 greater than 50 represent potentially unstable development
6711 subversions. This value is manually set in patchlevel.h
6712 "PERL_VERSION"
6714 From Oldsyms.U:
6715 In a Perl version number such as 5.6.2, this is the 6. This value
6717 is manually set in patchlevel.h
6718 "perladmin"
6720 From perladmin.U:
6721 Electronic mail address of the perl5 administrator.
6723 "perllibs"
6725 From End.U:
6726 The list of libraries needed by Perl only (any libraries needed by
6728 extensions only will by dropped, if using dynamic loading).
6729 "perlpath"
6731 From perlpath.U:
6732 This variable contains the eventual value of the "PERLPATH" symbol,
6734 which contains the name of the perl interpreter to be used in shell
6735 scripts and in the "eval "exec"" idiom. This variable is not
6736 necessarily the pathname of the file containing the perl
6737 interpreter; you must append the executable extension (_exe) if it
6738 is not already present. Note that Perl code that runs during the
6739 Perl build process cannot reference this variable, as Perl may not
6740 have been installed, or even if installed, may be a different
6741 version of Perl.
6742 "pg"
6744 From Loc.U:
6745 This variable is used internally by Configure to determine the full
6747 pathname (if any) of the pg program. After Configure runs, the
6748 value is reset to a plain "pg" and is not useful.
6749 "phostname"
6751 From myhostname.U:
6752 This variable contains the eventual value of the "PHOSTNAME"
6754 symbol, which is a command that can be fed to popen() to get the
6755 host name. The program should probably not presume that the domain
6756 is or isn't there already.
6757 "pidtype"
6759 From pidtype.U:
6760 This variable defines "PIDTYPE" to be something like pid_t, int,
6762 ushort, or whatever type is used to declare process ids in the
6763 kernel.
6764 "plibpth"
6766 From libpth.U:
6767 Holds the private path used by Configure to find out the libraries.
6769 Its value is prepend to libpth. This variable takes care of special
6770 machines, like the mips. Usually, it should be empty.
6771 "pmake"
6773 From Loc.U:
6774 This variable is defined but not used by Configure. The value is
6776 the empty string and is not useful.
6777 "pr"
6779 From Loc.U:
6780 This variable is defined but not used by Configure. The value is
6782 the empty string and is not useful.
6783 "prefix"
6785 From prefix.U:
6786 This variable holds the name of the directory below which the user
6788 will install the package. Usually, this is /usr/local, and
6789 executables go in /usr/local/bin, library stuff in /usr/local/lib,
6790 man pages in /usr/local/man, etc. It is only used to set defaults
6791 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
6792 "prefixexp"
6794 From prefix.U:
6795 This variable holds the full absolute path of the directory below
6797 which the user will install the package. Derived from prefix.
6798 "privlib"
6800 From privlib.U:
6801 This variable contains the eventual value of the "PRIVLIB" symbol,
6803 which is the name of the private library for this package. It may
6804 have a ~ on the front. It is up to the makefile to eventually
6805 create this directory while performing installation (with ~
6806 substitution).
6807 "privlibexp"
6809 From privlib.U:
6810 This variable is the ~name expanded version of privlib, so that you
6812 may use it directly in Makefiles or shell scripts.
6813 "procselfexe"
6815 From d_procselfexe.U:
6816 If d_procselfexe is defined, $procselfexe is the filename of the
6818 symbolic link pointing to the absolute pathname of the executing
6819 program.
6820 "ptrsize"
6822 From ptrsize.U:
6823 This variable contains the value of the "PTRSIZE" symbol, which
6825 indicates to the C program how many bytes there are in a pointer.
6826 q
6828 "quadkind"
6829 From quadtype.U:
6830 This variable, if defined, encodes the type of a quad: 1 = int, 2 =
6832 long, 3 = long long, 4 = int64_t.
6833 "quadtype"
6835 From quadtype.U:
6836 This variable defines Quad_t to be something like long, int, long
6838 long, int64_t, or whatever type is used for 64-bit integers.
6839 r
6841 "randbits"
6842 From randfunc.U:
6843 Indicates how many bits are produced by the function used to
6845 generate normalized random numbers.
6846 "randfunc"
6848 From randfunc.U:
6849 Indicates the name of the random number function to use. Values
6851 include drand48, random, and rand. In C programs, the "Drand01"
6852 macro is defined to generate uniformly distributed random numbers
6853 over the range [0., 1.[ (see drand01 and nrand).
6854 "random_r_proto"
6856 From d_random_r.U:
6857 This variable encodes the prototype of random_r. It is zero if
6859 d_random_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6860 of reentr.h if d_random_r is defined.
6861 "randseedtype"
6863 From randfunc.U:
6864 Indicates the type of the argument of the seedfunc.
6866 "ranlib"
6868 From orderlib.U:
6869 This variable is set to the pathname of the ranlib program, if it
6871 is needed to generate random libraries. Set to ":" if ar can
6872 generate random libraries or if random libraries are not supported
6873 "rd_nodata"
6875 From nblock_io.U:
6876 This variable holds the return code from read() when no data is
6878 present. It should be -1, but some systems return 0 when "O_NDELAY"
6879 is used, which is a shame because you cannot make the difference
6880 between no data and an EOF.. Sigh!
6881 "readdir64_r_proto"
6883 From d_readdir64_r.U:
6884 This variable encodes the prototype of readdir64_r. It is zero if
6886 d_readdir64_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6887 macros of reentr.h if d_readdir64_r is defined.
6888 "readdir_r_proto"
6890 From d_readdir_r.U:
6891 This variable encodes the prototype of readdir_r. It is zero if
6893 d_readdir_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6894 of reentr.h if d_readdir_r is defined.
6895 "revision"
6897 From patchlevel.U:
6898 The value of revision comes from the patchlevel.h file. In a
6900 version number such as 5.6.1, this is the 5. In patchlevel.h, this
6901 is referred to as "PERL_REVISION".
6902 "rm"
6904 From Loc.U:
6905 This variable is used internally by Configure to determine the full
6907 pathname (if any) of the rm program. After Configure runs, the
6908 value is reset to a plain "rm" and is not useful.
6909 "rm_try"
6911 From Unix.U:
6912 This is a cleanup variable for try test programs. Internal
6914 Configure use only.
6915 "rmail"
6917 From Loc.U:
6918 This variable is defined but not used by Configure. The value is
6920 the empty string and is not useful.
6921 "run"
6923 From Cross.U:
6924 This variable contains the command used by Configure to copy and
6926 execute a cross-compiled executable in the target host. Useful and
6927 available only during Perl build. Empty string '' if not cross-
6928 compiling.
6929 "runnm"
6931 From usenm.U:
6932 This variable contains "true" or "false" depending whether the nm
6934 extraction should be performed or not, according to the value of
6935 usenm and the flags on the Configure command line.
6936 s
6938 "sched_yield"
6939 From d_pthread_y.U:
6940 This variable defines the way to yield the execution of the current
6942 thread.
6943 "scriptdir"
6945 From scriptdir.U:
6946 This variable holds the name of the directory in which the user
6948 wants to put publicly scripts for the package in question. It is
6949 either the same directory as for binaries, or a special one that
6950 can be mounted across different architectures, like /usr/share.
6951 Programs must be prepared to deal with ~name expansion.
6952 "scriptdirexp"
6954 From scriptdir.U:
6955 This variable is the same as scriptdir, but is filename expanded at
6957 configuration time, for programs not wanting to bother with it.
6958 "sed"
6960 From Loc.U:
6961 This variable is used internally by Configure to determine the full
6963 pathname (if any) of the sed program. After Configure runs, the
6964 value is reset to a plain "sed" and is not useful.
6965 "seedfunc"
6967 From randfunc.U:
6968 Indicates the random number generating seed function. Values
6970 include srand48, srandom, and srand.
6971 "selectminbits"
6973 From selectminbits.U:
6974 This variable holds the minimum number of bits operated by select.
6976 That is, if you do select(n, ...), how many bits at least will be
6977 cleared in the masks if some activity is detected. Usually this is
6978 either n or 32*ceil(n/32), especially many little-endians do the
6979 latter. This is only useful if you have select(), naturally.
6980 "selecttype"
6982 From selecttype.U:
6983 This variable holds the type used for the 2nd, 3rd, and 4th
6985 arguments to select. Usually, this is "fd_set *", if "HAS_FD_SET"
6986 is defined, and "int *" otherwise. This is only useful if you have
6987 select(), naturally.
6988 "sendmail"
6990 From Loc.U:
6991 This variable is defined but not used by Configure. The value is
6993 the empty string and is not useful.
6994 "setgrent_r_proto"
6996 From d_setgrent_r.U:
6997 This variable encodes the prototype of setgrent_r. It is zero if
6999 d_setgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7000 macros of reentr.h if d_setgrent_r is defined.
7001 "sethostent_r_proto"
7003 From d_sethostent_r.U:
7004 This variable encodes the prototype of sethostent_r. It is zero if
7006 d_sethostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7007 macros of reentr.h if d_sethostent_r is defined.
7008 "setlocale_r_proto"
7010 From d_setlocale_r.U:
7011 This variable encodes the prototype of setlocale_r. It is zero if
7013 d_setlocale_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7014 macros of reentr.h if d_setlocale_r is defined.
7015 "setnetent_r_proto"
7017 From d_setnetent_r.U:
7018 This variable encodes the prototype of setnetent_r. It is zero if
7020 d_setnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7021 macros of reentr.h if d_setnetent_r is defined.
7022 "setprotoent_r_proto"
7024 From d_setprotoent_r.U:
7025 This variable encodes the prototype of setprotoent_r. It is zero
7027 if d_setprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7028 macros of reentr.h if d_setprotoent_r is defined.
7029 "setpwent_r_proto"
7031 From d_setpwent_r.U:
7032 This variable encodes the prototype of setpwent_r. It is zero if
7034 d_setpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7035 macros of reentr.h if d_setpwent_r is defined.
7036 "setservent_r_proto"
7038 From d_setservent_r.U:
7039 This variable encodes the prototype of setservent_r. It is zero if
7041 d_setservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7042 macros of reentr.h if d_setservent_r is defined.
7043 "sGMTIME_max"
7045 From time_size.U:
7046 This variable defines the maximum value of the time_t offset that
7048 the system function gmtime () accepts
7049 "sGMTIME_min"
7051 From time_size.U:
7052 This variable defines the minimum value of the time_t offset that
7054 the system function gmtime () accepts
7055 "sh"
7057 From sh.U:
7058 This variable contains the full pathname of the shell used on this
7060 system to execute Bourne shell scripts. Usually, this will be
7061 /bin/sh, though it's possible that some systems will have /bin/ksh,
7062 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
7063 D:/bin/sh.exe. This unit comes before Options.U, so you can't set
7064 sh with a "-D" option, though you can override this (and startsh)
7065 with "-O -Dsh=/bin/whatever -Dstartsh=whatever"
7066 "shar"
7068 From Loc.U:
7069 This variable is defined but not used by Configure. The value is
7071 the empty string and is not useful.
7072 "sharpbang"
7074 From spitshell.U:
7075 This variable contains the string #! if this system supports that
7077 construct.
7078 "shmattype"
7080 From d_shmat.U:
7081 This symbol contains the type of pointer returned by shmat(). It
7083 can be "void *" or "char *".
7084 "shortsize"
7086 From intsize.U:
7087 This variable contains the value of the "SHORTSIZE" symbol which
7089 indicates to the C program how many bytes there are in a short.
7090 "shrpenv"
7092 From libperl.U:
7093 If the user builds a shared libperl.so, then we need to tell the
7095 "perl" executable where it will be able to find the installed
7096 libperl.so. One way to do this on some systems is to set the
7097 environment variable "LD_RUN_PATH" to the directory that will be
7098 the final location of the shared libperl.so. The makefile can use
7099 this with something like $shrpenv $("CC") -o perl perlmain.o
7100 $libperl $libs Typical values are shrpenv="env
7101 "LD_RUN_PATH"=$archlibexp/"CORE"" or shrpenv='' See the main perl
7102 Makefile.SH for actual working usage.
7103 Alternatively, we might be able to use a command line option such
7105 as -R $archlibexp/"CORE" (Solaris) or -Wl,-rpath $archlibexp/"CORE"
7106 (Linux).
7107 "shsharp"
7109 From spitshell.U:
7110 This variable tells further Configure units whether your sh can
7112 handle # comments.
7113 "sig_count"
7115 From sig_name.U:
7116 This variable holds a number larger than the largest valid signal
7118 number. This is usually the same as the "NSIG" macro.
7119 "sig_name"
7121 From sig_name.U:
7122 This variable holds the signal names, space separated. The leading
7124 "SIG" in signal name is removed. A "ZERO" is prepended to the
7125 list. This is currently not used, sig_name_init is used instead.
7126 "sig_name_init"
7128 From sig_name.U:
7129 This variable holds the signal names, enclosed in double quotes and
7131 separated by commas, suitable for use in the "SIG_NAME" definition
7132 below. A "ZERO" is prepended to the list, and the list is
7133 terminated with a plain 0. The leading "SIG" in signal names is
7134 removed. See sig_num.
7135 "sig_num"
7137 From sig_name.U:
7138 This variable holds the signal numbers, space separated. A "ZERO"
7140 is prepended to the list (corresponding to the fake "SIGZERO").
7141 Those numbers correspond to the value of the signal listed in the
7142 same place within the sig_name list. This is currently not used,
7143 sig_num_init is used instead.
7144 "sig_num_init"
7146 From sig_name.U:
7147 This variable holds the signal numbers, enclosed in double quotes
7149 and separated by commas, suitable for use in the "SIG_NUM"
7150 definition below. A "ZERO" is prepended to the list, and the list
7151 is terminated with a plain 0.
7152 "sig_size"
7154 From sig_name.U:
7155 This variable contains the number of elements of the sig_name and
7157 sig_num arrays.
7158 "signal_t"
7160 From d_voidsig.U:
7161 This variable holds the type of the signal handler (void or int).
7163 "sitearch"
7165 From sitearch.U:
7166 This variable contains the eventual value of the "SITEARCH" symbol,
7168 which is the name of the private library for this package. It may
7169 have a ~ on the front. It is up to the makefile to eventually
7170 create this directory while performing installation (with ~
7171 substitution). The standard distribution will put nothing in this
7172 directory. After perl has been installed, users may install their
7173 own local architecture-dependent modules in this directory with
7174 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7175 "sitearchexp"
7177 From sitearch.U:
7178 This variable is the ~name expanded version of sitearch, so that
7180 you may use it directly in Makefiles or shell scripts.
7181 "sitebin"
7183 From sitebin.U:
7184 This variable holds the name of the directory in which the user
7186 wants to put add-on publicly executable files for the package in
7187 question. It is most often a local directory such as
7188 /usr/local/bin. Programs using this variable must be prepared to
7189 deal with ~name substitution. The standard distribution will put
7190 nothing in this directory. After perl has been installed, users
7191 may install their own local executables in this directory with
7192 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7193 "sitebinexp"
7195 From sitebin.U:
7196 This is the same as the sitebin variable, but is filename expanded
7198 at configuration time, for use in your makefiles.
7199 "sitehtml1dir"
7201 From sitehtml1dir.U:
7202 This variable contains the name of the directory in which site-
7204 specific html source pages are to be put. It is the responsibility
7205 of the Makefile.SH to get the value of this into the proper
7206 command. You must be prepared to do the ~name expansion yourself.
7207 The standard distribution will put nothing in this directory.
7208 After perl has been installed, users may install their own local
7209 html pages in this directory with MakeMaker Makefile.PL or
7210 equivalent. See "INSTALL" for details.
7211 "sitehtml1direxp"
7213 From sitehtml1dir.U:
7214 This variable is the same as the sitehtml1dir variable, but is
7216 filename expanded at configuration time, for convenient use in
7217 makefiles.
7218 "sitehtml3dir"
7220 From sitehtml3dir.U:
7221 This variable contains the name of the directory in which site-
7223 specific library html source pages are to be put. It is the
7224 responsibility of the Makefile.SH to get the value of this into the
7225 proper command. You must be prepared to do the ~name expansion
7226 yourself. The standard distribution will put nothing in this
7227 directory. After perl has been installed, users may install their
7228 own local library html pages in this directory with MakeMaker
7229 Makefile.PL or equivalent. See "INSTALL" for details.
7230 "sitehtml3direxp"
7232 From sitehtml3dir.U:
7233 This variable is the same as the sitehtml3dir variable, but is
7235 filename expanded at configuration time, for convenient use in
7236 makefiles.
7237 "sitelib"
7239 From sitelib.U:
7240 This variable contains the eventual value of the "SITELIB" symbol,
7242 which is the name of the private library for this package. It may
7243 have a ~ on the front. It is up to the makefile to eventually
7244 create this directory while performing installation (with ~
7245 substitution). The standard distribution will put nothing in this
7246 directory. After perl has been installed, users may install their
7247 own local architecture-independent modules in this directory with
7248 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7249 "sitelib_stem"
7251 From sitelib.U:
7252 This variable is $sitelibexp with any trailing version-specific
7254 component removed. The elements in inc_version_list
7255 (inc_version_list.U) can be tacked onto this variable to generate a
7256 list of directories to search.
7257 "sitelibexp"
7259 From sitelib.U:
7260 This variable is the ~name expanded version of sitelib, so that you
7262 may use it directly in Makefiles or shell scripts.
7263 "siteman1dir"
7265 From siteman1dir.U:
7266 This variable contains the name of the directory in which site-
7268 specific manual source pages are to be put. It is the
7269 responsibility of the Makefile.SH to get the value of this into the
7270 proper command. You must be prepared to do the ~name expansion
7271 yourself. The standard distribution will put nothing in this
7272 directory. After perl has been installed, users may install their
7273 own local man1 pages in this directory with MakeMaker Makefile.PL
7274 or equivalent. See "INSTALL" for details.
7275 "siteman1direxp"
7277 From siteman1dir.U:
7278 This variable is the same as the siteman1dir variable, but is
7280 filename expanded at configuration time, for convenient use in
7281 makefiles.
7282 "siteman3dir"
7284 From siteman3dir.U:
7285 This variable contains the name of the directory in which site-
7287 specific library man source pages are to be put. It is the
7288 responsibility of the Makefile.SH to get the value of this into the
7289 proper command. You must be prepared to do the ~name expansion
7290 yourself. The standard distribution will put nothing in this
7291 directory. After perl has been installed, users may install their
7292 own local man3 pages in this directory with MakeMaker Makefile.PL
7293 or equivalent. See "INSTALL" for details.
7294 "siteman3direxp"
7296 From siteman3dir.U:
7297 This variable is the same as the siteman3dir variable, but is
7299 filename expanded at configuration time, for convenient use in
7300 makefiles.
7301 "siteprefix"
7303 From siteprefix.U:
7304 This variable holds the full absolute path of the directory below
7306 which the user will install add-on packages. See "INSTALL" for
7307 usage and examples.
7308 "siteprefixexp"
7310 From siteprefix.U:
7311 This variable holds the full absolute path of the directory below
7313 which the user will install add-on packages. Derived from
7314 siteprefix.
7315 "sitescript"
7317 From sitescript.U:
7318 This variable holds the name of the directory in which the user
7320 wants to put add-on publicly executable files for the package in
7321 question. It is most often a local directory such as
7322 /usr/local/bin. Programs using this variable must be prepared to
7323 deal with ~name substitution. The standard distribution will put
7324 nothing in this directory. After perl has been installed, users
7325 may install their own local scripts in this directory with
7326 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
7327 "sitescriptexp"
7329 From sitescript.U:
7330 This is the same as the sitescript variable, but is filename
7332 expanded at configuration time, for use in your makefiles.
7333 "sizesize"
7335 From sizesize.U:
7336 This variable contains the size of a sizetype in bytes.
7338 "sizetype"
7340 From sizetype.U:
7341 This variable defines sizetype to be something like size_t,
7343 unsigned long, or whatever type is used to declare length
7344 parameters for string functions.
7345 "sleep"
7347 From Loc.U:
7348 This variable is defined but not used by Configure. The value is
7350 the empty string and is not useful.
7351 "sLOCALTIME_max"
7353 From time_size.U:
7354 This variable defines the maximum value of the time_t offset that
7356 the system function localtime () accepts
7357 "sLOCALTIME_min"
7359 From time_size.U:
7360 This variable defines the minimum value of the time_t offset that
7362 the system function localtime () accepts
7363 "smail"
7365 From Loc.U:
7366 This variable is defined but not used by Configure. The value is
7368 the empty string and is not useful.
7369 "so"
7371 From so.U:
7372 This variable holds the extension used to identify shared libraries
7374 (also known as shared objects) on the system. Usually set to "so".
7375 "sockethdr"
7377 From d_socket.U:
7378 This variable has any cpp "-I" flags needed for socket support.
7380 "socketlib"
7382 From d_socket.U:
7383 This variable has the names of any libraries needed for socket
7385 support.
7386 "socksizetype"
7388 From socksizetype.U:
7389 This variable holds the type used for the size argument for various
7391 socket calls like accept. Usual values include socklen_t, size_t,
7392 and int.
7393 "sort"
7395 From Loc.U:
7396 This variable is used internally by Configure to determine the full
7398 pathname (if any) of the sort program. After Configure runs, the
7399 value is reset to a plain "sort" and is not useful.
7400 "spackage"
7402 From package.U:
7403 This variable contains the name of the package being constructed,
7405 with the first letter uppercased, i.e. suitable for starting
7406 sentences.
7407 "spitshell"
7409 From spitshell.U:
7410 This variable contains the command necessary to spit out a runnable
7412 shell on this system. It is either cat or a grep "-v" for #
7413 comments.
7414 "sPRId64"
7416 From quadfio.U:
7417 This variable, if defined, contains the string used by stdio to
7419 format 64-bit decimal numbers (format "d") for output.
7420 "sPRIeldbl"
7422 From longdblfio.U:
7423 This variable, if defined, contains the string used by stdio to
7425 format long doubles (format "e") for output.
7426 "sPRIEUldbl"
7428 From longdblfio.U:
7429 This variable, if defined, contains the string used by stdio to
7431 format long doubles (format "E") for output. The "U" in the name
7432 is to separate this from sPRIeldbl so that even case-blind systems
7433 can see the difference.
7434 "sPRIfldbl"
7436 From longdblfio.U:
7437 This variable, if defined, contains the string used by stdio to
7439 format long doubles (format "f") for output.
7440 "sPRIFUldbl"
7442 From longdblfio.U:
7443 This variable, if defined, contains the string used by stdio to
7445 format long doubles (format "F") for output. The "U" in the name
7446 is to separate this from sPRIfldbl so that even case-blind systems
7447 can see the difference.
7448 "sPRIgldbl"
7450 From longdblfio.U:
7451 This variable, if defined, contains the string used by stdio to
7453 format long doubles (format "g") for output.
7454 "sPRIGUldbl"
7456 From longdblfio.U:
7457 This variable, if defined, contains the string used by stdio to
7459 format long doubles (format "G") for output. The "U" in the name
7460 is to separate this from sPRIgldbl so that even case-blind systems
7461 can see the difference.
7462 "sPRIi64"
7464 From quadfio.U:
7465 This variable, if defined, contains the string used by stdio to
7467 format 64-bit decimal numbers (format "i") for output.
7468 "sPRIo64"
7470 From quadfio.U:
7471 This variable, if defined, contains the string used by stdio to
7473 format 64-bit octal numbers (format "o") for output.
7474 "sPRIu64"
7476 From quadfio.U:
7477 This variable, if defined, contains the string used by stdio to
7479 format 64-bit unsigned decimal numbers (format "u") for output.
7480 "sPRIx64"
7482 From quadfio.U:
7483 This variable, if defined, contains the string used by stdio to
7485 format 64-bit hexadecimal numbers (format "x") for output.
7486 "sPRIXU64"
7488 From quadfio.U:
7489 This variable, if defined, contains the string used by stdio to
7491 format 64-bit hExADECimAl numbers (format "X") for output. The "U"
7492 in the name is to separate this from sPRIx64 so that even case-
7493 blind systems can see the difference.
7494 "srand48_r_proto"
7496 From d_srand48_r.U:
7497 This variable encodes the prototype of srand48_r. It is zero if
7499 d_srand48_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7500 of reentr.h if d_srand48_r is defined.
7501 "srandom_r_proto"
7503 From d_srandom_r.U:
7504 This variable encodes the prototype of srandom_r. It is zero if
7506 d_srandom_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7507 of reentr.h if d_srandom_r is defined.
7508 "src"
7510 From src.U:
7511 This variable holds the (possibly relative) path of the package
7513 source. It is up to the Makefile to use this variable and set
7514 "VPATH" accordingly to find the sources remotely. Use $pkgsrc to
7515 have an absolute path.
7516 "sSCNfldbl"
7518 From longdblfio.U:
7519 This variable, if defined, contains the string used by stdio to
7521 format long doubles (format "f") for input.
7522 "ssizetype"
7524 From ssizetype.U:
7525 This variable defines ssizetype to be something like ssize_t, long
7527 or int. It is used by functions that return a count of bytes or an
7528 error condition. It must be a signed type. We will pick a type
7529 such that sizeof(SSize_t) == sizeof(Size_t).
7530 "st_ino_sign"
7532 From st_ino_def.U:
7533 This variable contains the signedness of struct stat's st_ino. 1
7535 for unsigned, -1 for signed.
7536 "st_ino_size"
7538 From st_ino_def.U:
7539 This variable contains the size of struct stat's st_ino in bytes.
7541 "startperl"
7543 From startperl.U:
7544 This variable contains the string to put on the front of a perl
7546 script to make sure (hopefully) that it runs with perl and not some
7547 shell. Of course, that leading line must be followed by the
7548 classical perl idiom: eval 'exec perl -S $0 ${1+$@}' if
7549 $running_under_some_shell; to guarantee perl startup should the
7550 shell execute the script. Note that this magic incantation is not
7551 understood by csh.
7552 "startsh"
7554 From startsh.U:
7555 This variable contains the string to put on the front of a shell
7557 script to make sure (hopefully) that it runs with sh and not some
7558 other shell.
7559 "static_ext"
7561 From Extensions.U:
7562 This variable holds a list of "XS" extension files we want to link
7564 statically into the package. It is used by Makefile.
7565 "stdchar"
7567 From stdchar.U:
7568 This variable conditionally defines "STDCHAR" to be the type of
7570 char used in stdio.h. It has the values "unsigned char" or "char".
7571 "stdio_base"
7573 From d_stdstdio.U:
7574 This variable defines how, given a "FILE" pointer, fp, to access
7576 the _base field (or equivalent) of stdio.h's "FILE" structure.
7577 This will be used to define the macro FILE_base(fp).
7578 "stdio_bufsiz"
7580 From d_stdstdio.U:
7581 This variable defines how, given a "FILE" pointer, fp, to determine
7583 the number of bytes store in the I/O buffer pointer to by the _base
7584 field (or equivalent) of stdio.h's "FILE" structure. This will be
7585 used to define the macro FILE_bufsiz(fp).
7586 "stdio_cnt"
7588 From d_stdstdio.U:
7589 This variable defines how, given a "FILE" pointer, fp, to access
7591 the _cnt field (or equivalent) of stdio.h's "FILE" structure. This
7592 will be used to define the macro FILE_cnt(fp).
7593 "stdio_filbuf"
7595 From d_stdstdio.U:
7596 This variable defines how, given a "FILE" pointer, fp, to tell
7598 stdio to refill its internal buffers (?). This will be used to
7599 define the macro FILE_filbuf(fp).
7600 "stdio_ptr"
7602 From d_stdstdio.U:
7603 This variable defines how, given a "FILE" pointer, fp, to access
7605 the _ptr field (or equivalent) of stdio.h's "FILE" structure. This
7606 will be used to define the macro FILE_ptr(fp).
7607 "stdio_stream_array"
7609 From stdio_streams.U:
7610 This variable tells the name of the array holding the stdio
7612 streams. Usual values include _iob, __iob, and __sF.
7613 "strerror_r_proto"
7615 From d_strerror_r.U:
7616 This variable encodes the prototype of strerror_r. It is zero if
7618 d_strerror_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
7619 macros of reentr.h if d_strerror_r is defined.
7620 "submit"
7622 From Loc.U:
7623 This variable is defined but not used by Configure. The value is
7625 the empty string and is not useful.
7626 "subversion"
7628 From patchlevel.U:
7629 The subversion level of this package. The value of subversion
7631 comes from the patchlevel.h file. In a version number such as
7632 5.6.1, this is the 1. In patchlevel.h, this is referred to as
7633 "PERL_SUBVERSION". This is unique to perl.
7634 "sysman"
7636 From sysman.U:
7637 This variable holds the place where the manual is located on this
7639 system. It is not the place where the user wants to put his manual
7640 pages. Rather it is the place where Configure may look to find
7641 manual for unix commands (section 1 of the manual usually). See
7642 mansrc.
7643 "sysroot"
7645 From Sysroot.U:
7646 This variable is empty unless supplied by the Configure user. It
7648 can contain a path to an alternative root directory, under which
7649 headers and libraries for the compilation target can be found. This
7650 is generally used when cross-compiling using a gcc-like compiler.
7651 t
7653 "tail"
7654 From Loc.U:
7655 This variable is defined but not used by Configure. The value is
7657 the empty string and is not useful.
7658 "tar"
7660 From Loc.U:
7661 This variable is defined but not used by Configure. The value is
7663 the empty string and is not useful.
7664 "targetarch"
7666 From Cross.U:
7667 If cross-compiling, this variable contains the target architecture.
7669 If not, this will be empty.
7670 "targetdir"
7672 From Cross.U:
7673 This variable contains a path that will be created on the target
7675 host using targetmkdir, and then used to copy the cross-compiled
7676 executables to. Defaults to /tmp if not set.
7677 "targetenv"
7679 From Cross.U:
7680 If cross-compiling, this variable can be used to modify the
7682 environment on the target system. However, how and where it's
7683 used, and even if it's used at all, is entirely dependent on both
7684 the transport mechanism (targetrun) and what the target system is.
7685 Unless the relevant documentation says otherwise, it is genereally
7686 not useful.
7687 "targethost"
7689 From Cross.U:
7690 This variable contains the name of a separate host machine that can
7692 be used to run compiled test programs and perl tests on. Set to
7693 empty string if not in use.
7694 "targetmkdir"
7696 From Cross.U:
7697 This variable contains the command used by Configure to create a
7699 new directory on the target host.
7700 "targetport"
7702 From Cross.U:
7703 This variable contains the number of a network port to be used to
7705 connect to the host in targethost, if unset defaults to 22 for ssh.
7706 "targetsh"
7708 From sh.U:
7709 If cross-compiling, this variable contains the location of sh on
7711 the target system. If not, this will be the same as $sh.
7712 "tbl"
7714 From Loc.U:
7715 This variable is defined but not used by Configure. The value is
7717 the empty string and is not useful.
7718 "tee"
7720 From Loc.U:
7721 This variable is defined but not used by Configure. The value is
7723 the empty string and is not useful.
7724 "test"
7726 From Loc.U:
7727 This variable is used internally by Configure to determine the full
7729 pathname (if any) of the test program. After Configure runs, the
7730 value is reset to a plain "test" and is not useful.
7731 "timeincl"
7733 From i_time.U:
7734 This variable holds the full path of the included time header(s).
7736 "timetype"
7738 From d_time.U:
7739 This variable holds the type returned by time(). It can be long, or
7741 time_t on "BSD" sites (in which case <sys/types.h> should be
7742 included). Anyway, the type Time_t should be used.
7743 "tmpnam_r_proto"
7745 From d_tmpnam_r.U:
7746 This variable encodes the prototype of tmpnam_r. It is zero if
7748 d_tmpnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7749 of reentr.h if d_tmpnam_r is defined.
7750 "to"
7752 From Cross.U:
7753 This variable contains the command used by Configure to copy to
7755 from the target host. Useful and available only during Perl build.
7756 The string ":" if not cross-compiling.
7757 "touch"
7759 From Loc.U:
7760 This variable is used internally by Configure to determine the full
7762 pathname (if any) of the touch program. After Configure runs, the
7763 value is reset to a plain "touch" and is not useful.
7764 "tr"
7766 From Loc.U:
7767 This variable is used internally by Configure to determine the full
7769 pathname (if any) of the tr program. After Configure runs, the
7770 value is reset to a plain "tr" and is not useful.
7771 "trnl"
7773 From trnl.U:
7774 This variable contains the value to be passed to the tr(1) command
7776 to transliterate a newline. Typical values are "\012" and "\n".
7777 This is needed for "EBCDIC" systems where newline is not
7778 necessarily "\012".
7779 "troff"
7781 From Loc.U:
7782 This variable is defined but not used by Configure. The value is
7784 the empty string and is not useful.
7785 "ttyname_r_proto"
7787 From d_ttyname_r.U:
7788 This variable encodes the prototype of ttyname_r. It is zero if
7790 d_ttyname_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7791 of reentr.h if d_ttyname_r is defined.
7792 u
7794 "u16size"
7795 From perlxv.U:
7796 This variable is the size of an U16 in bytes.
7798 "u16type"
7800 From perlxv.U:
7801 This variable contains the C type used for Perl's U16.
7803 "u32size"
7805 From perlxv.U:
7806 This variable is the size of an U32 in bytes.
7808 "u32type"
7810 From perlxv.U:
7811 This variable contains the C type used for Perl's U32.
7813 "u64size"
7815 From perlxv.U:
7816 This variable is the size of an U64 in bytes.
7818 "u64type"
7820 From perlxv.U:
7821 This variable contains the C type used for Perl's U64.
7823 "u8size"
7825 From perlxv.U:
7826 This variable is the size of an U8 in bytes.
7828 "u8type"
7830 From perlxv.U:
7831 This variable contains the C type used for Perl's U8.
7833 "uidformat"
7835 From uidf.U:
7836 This variable contains the format string used for printing a Uid_t.
7838 "uidsign"
7840 From uidsign.U:
7841 This variable contains the signedness of a uidtype. 1 for
7843 unsigned, -1 for signed.
7844 "uidsize"
7846 From uidsize.U:
7847 This variable contains the size of a uidtype in bytes.
7849 "uidtype"
7851 From uidtype.U:
7852 This variable defines Uid_t to be something like uid_t, int,
7854 ushort, or whatever type is used to declare user ids in the kernel.
7855 "uname"
7857 From Loc.U:
7858 This variable is used internally by Configure to determine the full
7860 pathname (if any) of the uname program. After Configure runs, the
7861 value is reset to a plain "uname" and is not useful.
7862 "uniq"
7864 From Loc.U:
7865 This variable is used internally by Configure to determine the full
7867 pathname (if any) of the uniq program. After Configure runs, the
7868 value is reset to a plain "uniq" and is not useful.
7869 "uquadtype"
7871 From quadtype.U:
7872 This variable defines Uquad_t to be something like unsigned long,
7874 unsigned int, unsigned long long, uint64_t, or whatever type is
7875 used for 64-bit integers.
7876 "use5005threads"
7878 From usethreads.U:
7879 This variable conditionally defines the USE_5005THREADS symbol, and
7881 indicates that Perl should be built to use the 5.005-based
7882 threading implementation. Only valid up to 5.8.x.
7883 "use64bitall"
7885 From use64bits.U:
7886 This variable conditionally defines the USE_64_BIT_ALL symbol, and
7888 indicates that 64-bit integer types should be used when available.
7889 The maximal possible 64-bitness is employed: LP64 or ILP64, meaning
7890 that you will be able to use more than 2 gigabytes of memory. This
7891 mode is even more binary incompatible than USE_64_BIT_INT. You may
7892 not be able to run the resulting executable in a 32-bit "CPU" at
7893 all or you may need at least to reboot your "OS" to 64-bit mode.
7894 "use64bitint"
7896 From use64bits.U:
7897 This variable conditionally defines the USE_64_BIT_INT symbol, and
7899 indicates that 64-bit integer types should be used when available.
7900 The minimal possible 64-bitness is employed, just enough to get
7901 64-bit integers into Perl. This may mean using for example "long
7902 longs", while your memory may still be limited to 2 gigabytes.
7903 "usecbacktrace"
7905 From usebacktrace.U:
7906 This variable indicates whether we are compiling with backtrace
7908 support.
7909 "usecrosscompile"
7911 From Cross.U:
7912 This variable conditionally defines the "USE_CROSS_COMPILE" symbol,
7914 and indicates that Perl has been cross-compiled.
7915 "usedevel"
7917 From Devel.U:
7918 This variable indicates that Perl was configured with development
7920 features enabled. This should not be done for production builds.
7921 "usedl"
7923 From dlsrc.U:
7924 This variable indicates if the system supports dynamic loading of
7926 some sort. See also dlsrc and dlobj.
7927 "usedtrace"
7929 From usedtrace.U:
7930 This variable indicates whether we are compiling with dtrace
7932 support. See also dtrace.
7933 "usefaststdio"
7935 From usefaststdio.U:
7936 This variable conditionally defines the "USE_FAST_STDIO" symbol,
7938 and indicates that Perl should be built to use "fast stdio".
7939 Defaults to define in Perls 5.8 and earlier, to undef later.
7940 "useithreads"
7942 From usethreads.U:
7943 This variable conditionally defines the "USE_ITHREADS" symbol, and
7945 indicates that Perl should be built to use the interpreter-based
7946 threading implementation.
7947 "usekernprocpathname"
7949 From usekernprocpathname.U:
7950 This variable, indicates that we can use sysctl with
7952 "KERN_PROC_PATHNAME" to get a full path for the executable, and
7953 hence convert $^X to an absolute path.
7954 "uselargefiles"
7956 From uselfs.U:
7957 This variable conditionally defines the "USE_LARGE_FILES" symbol,
7959 and indicates that large file interfaces should be used when
7960 available.
7961 "uselongdouble"
7963 From uselongdbl.U:
7964 This variable conditionally defines the "USE_LONG_DOUBLE" symbol,
7966 and indicates that long doubles should be used when available.
7967 "usemallocwrap"
7969 From mallocsrc.U:
7970 This variable contains y if we are wrapping malloc to prevent
7972 integer overflow during size calculations.
7973 "usemorebits"
7975 From usemorebits.U:
7976 This variable conditionally defines the "USE_MORE_BITS" symbol, and
7978 indicates that explicit 64-bit interfaces and long doubles should
7979 be used when available.
7980 "usemultiplicity"
7982 From usemultiplicity.U:
7983 This variable conditionally defines the "MULTIPLICITY" symbol, and
7985 indicates that Perl should be built to use multiplicity.
7986 "usemymalloc"
7988 From mallocsrc.U:
7989 This variable contains y if the malloc that comes with this package
7991 is desired over the system's version of malloc. People often
7992 include special versions of malloc for efficiency, but such
7993 versions are often less portable. See also mallocsrc and
7994 mallocobj. If this is "y", then -lmalloc is removed from $libs.
7995 "usenm"
7997 From usenm.U:
7998 This variable contains "true" or "false" depending whether the nm
8000 extraction is wanted or not.
8001 "usensgetexecutablepath"
8003 From usensgetexecutablepath.U:
8004 This symbol, if defined, indicates that we can use
8006 _NSGetExecutablePath and realpath to get a full path for the
8007 executable, and hence convert $^X to an absolute path.
8008 "useopcode"
8010 From Extensions.U:
8011 This variable holds either "true" or "false" to indicate whether
8013 the Opcode extension should be used. The sole use for this
8014 currently is to allow an easy mechanism for users to skip the
8015 Opcode extension from the Configure command line.
8016 "useperlio"
8018 From useperlio.U:
8019 This variable conditionally defines the "USE_PERLIO" symbol, and
8021 indicates that the PerlIO abstraction should be used throughout.
8022 "useposix"
8024 From Extensions.U:
8025 This variable holds either "true" or "false" to indicate whether
8027 the "POSIX" extension should be used. The sole use for this
8028 currently is to allow an easy mechanism for hints files to indicate
8029 that "POSIX" will not compile on a particular system.
8030 "usequadmath"
8032 From usequadmath.U:
8033 This variable conditionally defines the "USE_QUADMATH" symbol, and
8035 indicates that the quadmath library __float128 long doubles should
8036 be used when available.
8037 "usereentrant"
8039 From usethreads.U:
8040 This variable conditionally defines the "USE_REENTRANT_API" symbol,
8042 which indicates that the thread code may try to use the various _r
8043 versions of library functions. This is only potentially meaningful
8044 if usethreads is set and is very experimental, it is not even
8045 prompted for.
8046 "userelocatableinc"
8048 From bin.U:
8049 This variable is set to true to indicate that perl should relocate
8051 @"INC" entries at runtime based on the path to the perl binary.
8052 Any @"INC" paths starting .../ are relocated relative to the
8053 directory containing the perl binary, and a logical cleanup of the
8054 path is then made around the join point (removing dir/../ pairs)
8055 "useshrplib"
8057 From libperl.U:
8058 This variable is set to "true" if the user wishes to build a shared
8060 libperl, and "false" otherwise.
8061 "usesitecustomize"
8063 From d_sitecustomize.U:
8064 This variable is set to true when the user requires a mechanism
8066 that allows the sysadmin to add entries to @"INC" at runtime. This
8067 variable being set, makes perl run $sitelib/sitecustomize.pl at
8068 startup.
8069 "usesocks"
8071 From usesocks.U:
8072 This variable conditionally defines the "USE_SOCKS" symbol, and
8074 indicates that Perl should be built to use "SOCKS".
8075 "usethreads"
8077 From usethreads.U:
8078 This variable conditionally defines the "USE_THREADS" symbol, and
8080 indicates that Perl should be built to use threads.
8081 "usevendorprefix"
8083 From vendorprefix.U:
8084 This variable tells whether the vendorprefix and consequently other
8086 vendor* paths are in use.
8087 "useversionedarchname"
8089 From archname.U:
8090 This variable indicates whether to include the $api_versionstring
8092 as a component of the $archname.
8093 "usevfork"
8095 From d_vfork.U:
8096 This variable is set to true when the user accepts to use vfork.
8098 It is set to false when no vfork is available or when the user
8099 explicitly requests not to use vfork.
8100 "usrinc"
8102 From usrinc.U:
8103 This variable holds the path of the include files, which is usually
8105 /usr/include. It is mainly used by other Configure units.
8106 "uuname"
8108 From Loc.U:
8109 This variable is defined but not used by Configure. The value is
8111 the empty string and is not useful.
8112 "uvoformat"
8114 From perlxvf.U:
8115 This variable contains the format string used for printing a Perl
8117 "UV" as an unsigned octal integer.
8118 "uvsize"
8120 From perlxv.U:
8121 This variable is the size of a "UV" in bytes.
8123 "uvtype"
8125 From perlxv.U:
8126 This variable contains the C type used for Perl's "UV".
8128 "uvuformat"
8130 From perlxvf.U:
8131 This variable contains the format string used for printing a Perl
8133 "UV" as an unsigned decimal integer.
8134 "uvxformat"
8136 From perlxvf.U:
8137 This variable contains the format string used for printing a Perl
8139 "UV" as an unsigned hexadecimal integer in lowercase abcdef.
8140 "uvXUformat"
8142 From perlxvf.U:
8143 This variable contains the format string used for printing a Perl
8145 "UV" as an unsigned hexadecimal integer in uppercase "ABCDEF".
8146 v
8148 "vendorarch"
8149 From vendorarch.U:
8150 This variable contains the value of the "PERL_VENDORARCH" symbol.
8152 It may have a ~ on the front. The standard distribution will put
8153 nothing in this directory. Vendors who distribute perl may wish to
8154 place their own architecture-dependent modules and extensions in
8155 this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or
8156 equivalent. See "INSTALL" for details.
8157 "vendorarchexp"
8159 From vendorarch.U:
8160 This variable is the ~name expanded version of vendorarch, so that
8162 you may use it directly in Makefiles or shell scripts.
8163 "vendorbin"
8165 From vendorbin.U:
8166 This variable contains the eventual value of the "VENDORBIN"
8168 symbol. It may have a ~ on the front. The standard distribution
8169 will put nothing in this directory. Vendors who distribute perl
8170 may wish to place additional binaries in this directory with
8171 MakeMaker Makefile.PL "INSTALLDIRS"=vendor or equivalent. See
8172 "INSTALL" for details.
8173 "vendorbinexp"
8175 From vendorbin.U:
8176 This variable is the ~name expanded version of vendorbin, so that
8178 you may use it directly in Makefiles or shell scripts.
8179 "vendorhtml1dir"
8181 From vendorhtml1dir.U:
8182 This variable contains the name of the directory for html pages.
8184 It may have a ~ on the front. The standard distribution will put
8185 nothing in this directory. Vendors who distribute perl may wish to
8186 place their own html pages in this directory with MakeMaker
8187 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
8188 details.
8189 "vendorhtml1direxp"
8191 From vendorhtml1dir.U:
8192 This variable is the ~name expanded version of vendorhtml1dir, so
8194 that you may use it directly in Makefiles or shell scripts.
8195 "vendorhtml3dir"
8197 From vendorhtml3dir.U:
8198 This variable contains the name of the directory for html library
8200 pages. It may have a ~ on the front. The standard distribution
8201 will put nothing in this directory. Vendors who distribute perl
8202 may wish to place their own html pages for modules and extensions
8203 in this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor
8204 or equivalent. See "INSTALL" for details.
8205 "vendorhtml3direxp"
8207 From vendorhtml3dir.U:
8208 This variable is the ~name expanded version of vendorhtml3dir, so
8210 that you may use it directly in Makefiles or shell scripts.
8211 "vendorlib"
8213 From vendorlib.U:
8214 This variable contains the eventual value of the "VENDORLIB"
8216 symbol, which is the name of the private library for this package.
8217 The standard distribution will put nothing in this directory.
8218 Vendors who distribute perl may wish to place their own modules in
8219 this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or
8220 equivalent. See "INSTALL" for details.
8221 "vendorlib_stem"
8223 From vendorlib.U:
8224 This variable is $vendorlibexp with any trailing version-specific
8226 component removed. The elements in inc_version_list
8227 (inc_version_list.U) can be tacked onto this variable to generate a
8228 list of directories to search.
8229 "vendorlibexp"
8231 From vendorlib.U:
8232 This variable is the ~name expanded version of vendorlib, so that
8234 you may use it directly in Makefiles or shell scripts.
8235 "vendorman1dir"
8237 From vendorman1dir.U:
8238 This variable contains the name of the directory for man1 pages.
8240 It may have a ~ on the front. The standard distribution will put
8241 nothing in this directory. Vendors who distribute perl may wish to
8242 place their own man1 pages in this directory with MakeMaker
8243 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
8244 details.
8245 "vendorman1direxp"
8247 From vendorman1dir.U:
8248 This variable is the ~name expanded version of vendorman1dir, so
8250 that you may use it directly in Makefiles or shell scripts.
8251 "vendorman3dir"
8253 From vendorman3dir.U:
8254 This variable contains the name of the directory for man3 pages.
8256 It may have a ~ on the front. The standard distribution will put
8257 nothing in this directory. Vendors who distribute perl may wish to
8258 place their own man3 pages in this directory with MakeMaker
8259 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
8260 details.
8261 "vendorman3direxp"
8263 From vendorman3dir.U:
8264 This variable is the ~name expanded version of vendorman3dir, so
8266 that you may use it directly in Makefiles or shell scripts.
8267 "vendorprefix"
8269 From vendorprefix.U:
8270 This variable holds the full absolute path of the directory below
8272 which the vendor will install add-on packages. See "INSTALL" for
8273 usage and examples.
8274 "vendorprefixexp"
8276 From vendorprefix.U:
8277 This variable holds the full absolute path of the directory below
8279 which the vendor will install add-on packages. Derived from
8280 vendorprefix.
8281 "vendorscript"
8283 From vendorscript.U:
8284 This variable contains the eventual value of the "VENDORSCRIPT"
8286 symbol. It may have a ~ on the front. The standard distribution
8287 will put nothing in this directory. Vendors who distribute perl
8288 may wish to place additional executable scripts in this directory
8289 with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or equivalent. See
8290 "INSTALL" for details.
8291 "vendorscriptexp"
8293 From vendorscript.U:
8294 This variable is the ~name expanded version of vendorscript, so
8296 that you may use it directly in Makefiles or shell scripts.
8297 "version"
8299 From patchlevel.U:
8300 The full version number of this package, such as 5.6.1 (or 5_6_1).
8302 This combines revision, patchlevel, and subversion to get the full
8303 version number, including any possible subversions. This is
8304 suitable for use as a directory name, and hence is filesystem
8305 dependent.
8306 "version_patchlevel_string"
8308 From patchlevel.U:
8309 This is a string combining version, subversion and perl_patchlevel
8311 (if perl_patchlevel is non-zero). It is typically something like
8312 'version 7 subversion 1' or 'version 7 subversion 1 patchlevel
8313 11224' It is computed here to avoid duplication of code in
8314 myconfig.SH and lib/Config.pm.
8315 "versiononly"
8317 From versiononly.U:
8318 If set, this symbol indicates that only the version-specific
8320 components of a perl installation should be installed. This may be
8321 useful for making a test installation of a new version without
8322 disturbing the existing installation. Setting versiononly is
8323 equivalent to setting installperl's -v option. In particular, the
8324 non-versioned scripts and programs such as a2p, c2ph, h2xs, pod2*,
8325 and perldoc are not installed (see "INSTALL" for a more complete
8326 list). Nor are the man pages installed. Usually, this is undef.
8327 "vi"
8329 From Loc.U:
8330 This variable is defined but not used by Configure. The value is
8332 the empty string and is not useful.
8333 x
8335 "xlibpth"
8336 From libpth.U:
8337 This variable holds extra path (space-separated) used to find
8339 libraries on this platform, for example "CPU"-specific libraries
8340 (on multi-"CPU" platforms) may be listed here.
8341 y
8343 "yacc"
8344 From yacc.U:
8345 This variable holds the name of the compiler compiler we want to
8347 use in the Makefile. It can be yacc, byacc, or bison -y.
8348 "yaccflags"
8350 From yacc.U:
8351 This variable contains any additional yacc flags desired by the
8353 user. It is up to the Makefile to use this.
8354 z
8356 "zcat"
8357 From Loc.U:
8358 This variable is defined but not used by Configure. The value is
8360 the empty string and is not useful.
8361 "zip"
8363 From Loc.U:
8364 This variable is used internally by Configure to determine the full
8366 pathname (if any) of the zip program. After Configure runs, the
8367 value is reset to a plain "zip" and is not useful.
8368
8370 Information on the git commit from which the current perl binary was
8371 compiled can be found in the variable $Config::Git_Data. The variable
8372 is a structured string that looks something like this:
8373 git_commit_id='ea0c2dbd5f5ac6845ecc7ec6696415bf8e27bd52'
8375 git_describe='GitLive-blead-1076-gea0c2db'
8376 git_branch='smartmatch'
8377 git_uncommitted_changes=''
8378 git_commit_id_title='Commit id:'
8379 git_commit_date='2009-05-09 17:47:31 +0200'
8380 Its format is not guaranteed not to change over time.
8382
8384 This module contains a good example of how to use tie to implement a
8385 cache and an example of how to make a tied variable readonly to those
8386 outside of it.
8387perl v5.28.2 2019-04-23 Config(3pm)