1Config(3pm) Perl Programmers Reference Guide Config(3pm)
2
6 Config - access Perl configuration information
7
9 use Config;
10 if ($Config{usethreads}) {
11 print "has thread support\n"
12 }
13 use Config qw(myconfig config_sh config_vars config_re);
15 print myconfig();
17 print config_sh();
19 print config_re();
21 config_vars(qw(osname archname));
23
25 The Config module contains all the information that was available to
26 the "Configure" program at Perl build time (over 900 values).
27 Shell variables from the config.sh file (written by Configure) are
29 stored in the readonly-variable %Config, indexed by their names.
30 Values stored in config.sh as 'undef' are returned as undefined values.
32 The perl "exists" function can be used to check if a named variable
33 exists.
34 myconfig()
36 Returns a textual summary of the major perl configuration values.
37 See also "-V" in "Switches" in perlrun.
38 config_sh()
40 Returns the entire perl configuration information in the form of
41 the original config.sh shell variable assignment script.
42 config_re($regex)
44 Like config_sh() but returns, as a list, only the config entries
45 who's names match the $regex.
46 config_vars(@names)
48 Prints to STDOUT the values of the named configuration variable.
49 Each is printed on a separate line in the form:
50 name='value';
52 Names which are unknown are output as "name='UNKNOWN';". See also
54 "-V:name" in "Switches" in perlrun.
55
57 Here's a more sophisticated example of using %Config:
58 use Config;
60 use strict;
61 my %sig_num;
63 my @sig_name;
64 unless($Config{sig_name} && $Config{sig_num}) {
65 die "No sigs?";
66 } else {
67 my @names = split ' ', $Config{sig_name};
68 @sig_num{@names} = split ' ', $Config{sig_num};
69 foreach (@names) {
70 $sig_name[$sig_num{$_}] ⎪⎪= $_;
71 }
72 }
73 print "signal #17 = $sig_name[17]\n";
75 if ($sig_num{ALRM}) {
76 print "SIGALRM is $sig_num{ALRM}\n";
77 }
78
80 Because this information is not stored within the perl executable
81 itself it is possible (but unlikely) that the information does not
82 relate to the actual perl binary which is being used to access it.
83 The Config module is installed into the architecture and version spe‐
85 cific library directory ($Config{installarchlib}) and it checks the
86 perl version number when loaded.
87 The values stored in config.sh may be either single-quoted or dou‐
89 ble-quoted. Double-quoted strings are handy for those cases where you
90 need to include escape sequences in the strings. To avoid runtime vari‐
91 able interpolation, any "$" and "@" characters are replaced by "\$" and
92 "\@", respectively. This isn't foolproof, of course, so don't embed
93 "\$" or "\@" in double-quoted strings unless you're willing to deal
94 with the consequences. (The slashes will end up escaped and the "$" or
95 "@" will trigger variable interpolation)
96
98 Most "Config" variables are determined by the "Configure" script on
99 platforms supported by it (which is most UNIX platforms). Some plat‐
100 forms have custom-made "Config" variables, and may thus not have some
101 of the variables described below, or may have extraneous variables spe‐
102 cific to that particular port. See the port specific documentation in
103 such cases.
104 _
106 "_a"
108 From Unix.U:
109 This variable defines the extension used for ordinary library
111 files. For unix, it is .a. The . is included. Other possible
112 values include .lib.
113 "_exe"
115 From Unix.U:
116 This variable defines the extension used for executable files.
118 "DJGPP", Cygwin and OS/2 use .exe. Stratus "VOS" uses .pm. On
119 operating systems which do not require a specific extension for
120 executable files, this variable is empty.
121 "_o"
123 From Unix.U:
124 This variable defines the extension used for object files. For
126 unix, it is .o. The . is included. Other possible values include
127 .obj.
128 a
130 "afs"
132 From afs.U:
133 This variable is set to "true" if "AFS" (Andrew File System) is
135 used on the system, "false" otherwise. It is possible to override
136 this with a hint value or command line option, but you'd better
137 know what you are doing.
138 "afsroot"
140 From afs.U:
141 This variable is by default set to /afs. In the unlikely case this
143 is not the correct root, it is possible to override this with a
144 hint value or command line option. This will be used in subsequent
145 tests for AFSness in the Perl configure and test process.
146 "alignbytes"
148 From alignbytes.U:
149 This variable holds the number of bytes required to align a dou‐
151 ble-- or a long double when applicable. Usual values are 2, 4 and
152 8. The default is eight, for safety.
153 "ansi2knr"
155 From ansi2knr.U:
156 This variable is set if the user needs to run ansi2knr. Currently,
158 this is not supported, so we just abort.
159 "aphostname"
161 From d_gethname.U:
162 This variable contains the command which can be used to compute the
164 host name. The command is fully qualified by its absolute path, to
165 make it safe when used by a process with super-user privileges.
166 "api_revision"
168 From patchlevel.U:
169 The three variables, api_revision, api_version, and api_subversion,
171 specify the version of the oldest perl binary compatible with the
172 present perl. In a full version string such as 5.6.1, api_revision
173 is the 5. Prior to 5.5.640, the format was a floating point num‐
174 ber, like 5.00563.
175 perl.c:incpush() and lib/lib.pm will automatically search in
177 $sitelib/.. for older directories back to the limit specified by
178 these api_ variables. This is only useful if you have a perl
179 library directory tree structured like the default one. See
180 "INSTALL" for how this works. The versioned site_perl directory
181 was introduced in 5.005, so that is the lowest possible value. The
182 version list appropriate for the current system is determined in
183 inc_version_list.U.
184 "XXX" To do: Since compatibility can depend on compile time
186 options (such as bincompat, longlong, etc.) it should (perhaps) be
187 set by Configure, but currently it isn't. Currently, we read a
188 hard-wired value from patchlevel.h. Perhaps what we ought to do is
189 take the hard-wired value from patchlevel.h but then modify it if
190 the current Configure options warrant. patchlevel.h then would use
191 an #ifdef guard.
192 "api_subversion"
194 From patchlevel.U:
195 The three variables, api_revision, api_version, and api_subversion,
197 specify the version of the oldest perl binary compatible with the
198 present perl. In a full version string such as 5.6.1, api_subver‐
199 sion is the 1. See api_revision for full details.
200 "api_version"
202 From patchlevel.U:
203 The three variables, api_revision, api_version, and api_subversion,
205 specify the version of the oldest perl binary compatible with the
206 present perl. In a full version string such as 5.6.1, api_version
207 is the 6. See api_revision for full details. As a special case,
208 5.5.0 is rendered in the old-style as 5.005. (In the 5.005_0x
209 maintenance series, this was the only versioned directory in
210 $sitelib.)
211 "api_versionstring"
213 From patchlevel.U:
214 This variable combines api_revision, api_version, and api_subver‐
216 sion in a format such as 5.6.1 (or 5_6_1) suitable for use as a
217 directory name. This is filesystem dependent.
218 "ar"
220 From Loc.U:
221 This variable is used internally by Configure to determine the full
223 pathname (if any) of the ar program. After Configure runs, the
224 value is reset to a plain "ar" and is not useful.
225 "archlib"
227 From archlib.U:
228 This variable holds the name of the directory in which the user
230 wants to put architecture-dependent public library files for $pack‐
231 age. It is most often a local directory such as /usr/local/lib.
232 Programs using this variable must be prepared to deal with filename
233 expansion.
234 "archlibexp"
236 From archlib.U:
237 This variable is the same as the archlib variable, but is filename
239 expanded at configuration time, for convenient use.
240 "archname64"
242 From use64bits.U:
243 This variable is used for the 64-bitness part of $archname.
245 "archname"
247 From archname.U:
248 This variable is a short name to characterize the current architec‐
250 ture. It is used mainly to construct the default archlib.
251 "archobjs"
253 From Unix.U:
254 This variable defines any additional objects that must be linked in
256 with the program on this architecture. On unix, it is usually
257 empty. It is typically used to include emulations of unix calls or
258 other facilities. For perl on OS/2, for example, this would
259 include os2/os2.obj.
260 "asctime_r_proto"
262 From d_asctime_r.U:
263 This variable encodes the prototype of asctime_r. It is zero if
265 d_asctime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
266 of reentr.h if d_asctime_r is defined.
267 "awk"
269 From Loc.U:
270 This variable is used internally by Configure to determine the full
272 pathname (if any) of the awk program. After Configure runs, the
273 value is reset to a plain "awk" and is not useful.
274 b
276 "baserev"
278 From baserev.U:
279 The base revision level of this package, from the .package file.
281 "bash"
283 From Loc.U:
284 This variable is defined but not used by Configure. The value is a
286 plain '' and is not useful.
287 "bin"
289 From bin.U:
290 This variable holds the name of the directory in which the user
292 wants to put publicly executable images for the package in ques‐
293 tion. It is most often a local directory such as /usr/local/bin.
294 Programs using this variable must be prepared to deal with ~name
295 substitution.
296 "binexp"
298 From bin.U:
299 This is the same as the bin variable, but is filename expanded at
301 configuration time, for use in your makefiles.
302 "bison"
304 From Loc.U:
305 This variable is used internally by Configure to determine the full
307 pathname (if any) of the bison program. After Configure runs, the
308 value is reset to a plain "bison" and is not useful.
309 "byacc"
311 From Loc.U:
312 This variable is used internally by Configure to determine the full
314 pathname (if any) of the byacc program. After Configure runs, the
315 value is reset to a plain "byacc" and is not useful.
316 "byteorder"
318 From byteorder.U:
319 This variable holds the byte order in a "UV". In the following,
321 larger digits indicate more significance. The variable byteorder
322 is either 4321 on a big-endian machine, or 1234 on a little-endian,
323 or 87654321 on a Cray ... or 3412 with weird order !
324 c
326 "c" From n.U:
328 This variable contains the \c string if that is what causes the
330 echo command to suppress newline. Otherwise it is null. Correct
331 usage is $echo $n "prompt for a question: $c".
332 "castflags"
334 From d_castneg.U:
335 This variable contains a flag that precise difficulties the com‐
337 piler has casting odd floating values to unsigned long: 0 = ok 1 =
338 couldn't cast < 0 2 = couldn't cast >= 0x80000000 4 = couldn't cast
339 in argument expression list
340 "cat"
342 From Loc.U:
343 This variable is used internally by Configure to determine the full
345 pathname (if any) of the cat program. After Configure runs, the
346 value is reset to a plain "cat" and is not useful.
347 "cc"
349 From cc.U:
350 This variable holds the name of a command to execute a C compiler
352 which can resolve multiple global references that happen to have
353 the same name. Usual values are "cc" and "gcc". Fervent "ANSI"
354 compilers may be called "c89". "AIX" has xlc.
355 "cccdlflags"
357 From dlsrc.U:
358 This variable contains any special flags that might need to be
360 passed with "cc -c" to compile modules to be used to create a
361 shared library that will be used for dynamic loading. For hpux,
362 this should be +z. It is up to the makefile to use it.
363 "ccdlflags"
365 From dlsrc.U:
366 This variable contains any special flags that might need to be
368 passed to cc to link with a shared library for dynamic loading. It
369 is up to the makefile to use it. For sunos 4.1, it should be
370 empty.
371 "ccflags"
373 From ccflags.U:
374 This variable contains any additional C compiler flags desired by
376 the user. It is up to the Makefile to use this.
377 "ccflags_uselargefiles"
379 From uselfs.U:
380 This variable contains the compiler flags needed by large file
382 builds and added to ccflags by hints files.
383 "ccname"
385 From Checkcc.U:
386 This can set either by hints files or by Configure. If using gcc,
388 this is gcc, and if not, usually equal to cc, unimpressive, no?
389 Some platforms, however, make good use of this by storing the fla‐
390 vor of the C compiler being used here. For example if using the
391 Sun WorkShop suite, ccname will be "workshop".
392 "ccsymbols"
394 From Cppsym.U:
395 The variable contains the symbols defined by the C compiler alone.
397 The symbols defined by cpp or by cc when it calls cpp are not in
398 this list, see cppsymbols and cppccsymbols. The list is a space-
399 separated list of symbol=value tokens.
400 "ccversion"
402 From Checkcc.U:
403 This can set either by hints files or by Configure. If using a
405 (non-gcc) vendor cc, this variable may contain a version for the
406 compiler.
407 "cf_by"
409 From cf_who.U:
410 Login name of the person who ran the Configure script and answered
412 the questions. This is used to tag both config.sh and config_h.SH.
413 "cf_email"
415 From cf_email.U:
416 Electronic mail address of the person who ran Configure. This can
418 be used by units that require the user's e-mail, like MailList.U.
419 "cf_time"
421 From cf_who.U:
422 Holds the output of the "date" command when the configuration file
424 was produced. This is used to tag both config.sh and config_h.SH.
425 "charsize"
427 From charsize.U:
428 This variable contains the value of the "CHARSIZE" symbol, which
430 indicates to the C program how many bytes there are in a character.
431 "chgrp"
433 From Loc.U:
434 This variable is defined but not used by Configure. The value is a
436 plain '' and is not useful.
437 "chmod"
439 From Loc.U:
440 This variable is used internally by Configure to determine the full
442 pathname (if any) of the chmod program. After Configure runs, the
443 value is reset to a plain "chmod" and is not useful.
444 "chown"
446 From Loc.U:
447 This variable is defined but not used by Configure. The value is a
449 plain '' and is not useful.
450 "clocktype"
452 From d_times.U:
453 This variable holds the type returned by times(). It can be long,
455 or clock_t on "BSD" sites (in which case <sys/types.h> should be
456 included).
457 "comm"
459 From Loc.U:
460 This variable is used internally by Configure to determine the full
462 pathname (if any) of the comm program. After Configure runs, the
463 value is reset to a plain "comm" and is not useful.
464 "compress"
466 From Loc.U:
467 This variable is defined but not used by Configure. The value is a
469 plain '' and is not useful.
470 "contains"
472 From contains.U:
473 This variable holds the command to do a grep with a proper return
475 status. On most sane systems it is simply "grep". On insane sys‐
476 tems it is a grep followed by a cat followed by a test. This vari‐
477 able is primarily for the use of other Configure units.
478 "cp"
480 From Loc.U:
481 This variable is used internally by Configure to determine the full
483 pathname (if any) of the cp program. After Configure runs, the
484 value is reset to a plain "cp" and is not useful.
485 "cpio"
487 From Loc.U:
488 This variable is defined but not used by Configure. The value is a
490 plain '' and is not useful.
491 "cpp"
493 From Loc.U:
494 This variable is used internally by Configure to determine the full
496 pathname (if any) of the cpp program. After Configure runs, the
497 value is reset to a plain "cpp" and is not useful.
498 "cpp_stuff"
500 From cpp_stuff.U:
501 This variable contains an identification of the concatenation mech‐
503 anism used by the C preprocessor.
504 "cppccsymbols"
506 From Cppsym.U:
507 The variable contains the symbols defined by the C compiler when it
509 calls cpp. The symbols defined by the cc alone or cpp alone are
510 not in this list, see ccsymbols and cppsymbols. The list is a
511 space-separated list of symbol=value tokens.
512 "cppflags"
514 From ccflags.U:
515 This variable holds the flags that will be passed to the C pre-
517 processor. It is up to the Makefile to use it.
518 "cpplast"
520 From cppstdin.U:
521 This variable has the same functionality as cppminus, only it
523 applies to cpprun and not cppstdin.
524 "cppminus"
526 From cppstdin.U:
527 This variable contains the second part of the string which will
529 invoke the C preprocessor on the standard input and produce to
530 standard output. This variable will have the value "-" if cppstdin
531 needs a minus to specify standard input, otherwise the value is "".
532 "cpprun"
534 From cppstdin.U:
535 This variable contains the command which will invoke a C preproces‐
537 sor on standard input and put the output to stdout. It is guaran‐
538 teed not to be a wrapper and may be a null string if no preproces‐
539 sor can be made directly available. This preprocessor might be dif‐
540 ferent from the one used by the C compiler. Don't forget to append
541 cpplast after the preprocessor options.
542 "cppstdin"
544 From cppstdin.U:
545 This variable contains the command which will invoke the C pre‐
547 processor on standard input and put the output to stdout. It is
548 primarily used by other Configure units that ask about preprocessor
549 symbols.
550 "cppsymbols"
552 From Cppsym.U:
553 The variable contains the symbols defined by the C preprocessor
555 alone. The symbols defined by cc or by cc when it calls cpp are
556 not in this list, see ccsymbols and cppccsymbols. The list is a
557 space-separated list of symbol=value tokens.
558 "crypt_r_proto"
560 From d_crypt_r.U:
561 This variable encodes the prototype of crypt_r. It is zero if
563 d_crypt_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
564 of reentr.h if d_crypt_r is defined.
565 "cryptlib"
567 From d_crypt.U:
568 This variable holds -lcrypt or the path to a libcrypt.a archive if
570 the crypt() function is not defined in the standard C library. It
571 is up to the Makefile to use this.
572 "csh"
574 From Loc.U:
575 This variable is used internally by Configure to determine the full
577 pathname (if any) of the csh program. After Configure runs, the
578 value is reset to a plain "csh" and is not useful.
579 "ctermid_r_proto"
581 From d_ctermid_r.U:
582 This variable encodes the prototype of ctermid_r. It is zero if
584 d_ctermid_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
585 of reentr.h if d_ctermid_r is defined.
586 "ctime_r_proto"
588 From d_ctime_r.U:
589 This variable encodes the prototype of ctime_r. It is zero if
591 d_ctime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
592 of reentr.h if d_ctime_r is defined.
593 d
595 "d__fwalk"
597 From d__fwalk.U:
598 This variable conditionally defines "HAS__FWALK" if _fwalk() is
600 available to apply a function to all the file handles.
601 "d_access"
603 From d_access.U:
604 This variable conditionally defines "HAS_ACCESS" if the access()
606 system call is available to check for access permissions using real
607 IDs.
608 "d_accessx"
610 From d_accessx.U:
611 This variable conditionally defines the "HAS_ACCESSX" symbol, which
613 indicates to the C program that the accessx() routine is available.
614 "d_aintl"
616 From d_aintl.U:
617 This variable conditionally defines the "HAS_AINTL" symbol, which
619 indicates to the C program that the aintl() routine is available.
620 If copysignl is also present we can emulate modfl.
621 "d_alarm"
623 From d_alarm.U:
624 This variable conditionally defines the "HAS_ALARM" symbol, which
626 indicates to the C program that the alarm() routine is available.
627 "d_archlib"
629 From archlib.U:
630 This variable conditionally defines "ARCHLIB" to hold the pathname
632 of architecture-dependent library files for $package. If $archlib
633 is the same as $privlib, then this is set to undef.
634 "d_asctime_r"
636 From d_asctime_r.U:
637 This variable conditionally defines the "HAS_ASCTIME_R" symbol,
639 which indicates to the C program that the asctime_r() routine is
640 available.
641 "d_atolf"
643 From atolf.U:
644 This variable conditionally defines the "HAS_ATOLF" symbol, which
646 indicates to the C program that the atolf() routine is available.
647 "d_atoll"
649 From atoll.U:
650 This variable conditionally defines the "HAS_ATOLL" symbol, which
652 indicates to the C program that the atoll() routine is available.
653 "d_attribute_format"
655 From d_attribut_format.U:
656 This variable conditionally defines "HASATTRIBUTE_FORMAT", which
658 indicates the C compiler can check for printf-like formats.
659 "d_attribute_malloc"
661 From d_attribute_malloc.U:
662 This variable conditionally defines "HASATTRIBUTE_MALLOC", which
664 indicates the C compiler can understand functions as having malloc-
665 like semantics.
666 "d_attribute_nonnull"
668 From d_attribute_nonnull.U:
669 This variable conditionally defines "HASATTRIBUTE_NONNULL", which
671 indicates that the C compiler can know that certain arguments must
672 not be "NULL", and will check accordingly at compile time.
673 "d_attribute_noreturn"
675 From d_attribute_noreturn.U:
676 This variable conditionally defines "HASATTRIBUTE_NORETURN", which
678 indicates that the C compiler can know that certain functions are
679 guaranteed never to return.
680 "d_attribute_pure"
682 From d_attribute_pure.U:
683 This variable conditionally defines "HASATTRIBUTE_PURE", which
685 indicates that the C compiler can know that certain functions are
686 "pure" functions, meaning that they have no side effects, and only
687 rely on function input and/or global data for their results.
688 "d_attribute_unused"
690 From d_attribute_unused.U:
691 This variable conditionally defines "HASATTRIBUTE_UNUSED", which
693 indicates that the C compiler can know that certain variables and
694 arguments may not always be used, and to not throw warnings if they
695 don't get used.
696 "d_attribute_warn_unused_result"
698 From d_attribute_warn_unused_result.U:
699 This variable conditionally defines "HASAT‐
701 TRIBUTE_WARN_UNUSED_RESULT", which indicates that the C compiler
702 can know that certain functions have a return values that must not
703 be ignored, such as malloc() or open().
704 "d_bcmp"
706 From d_bcmp.U:
707 This variable conditionally defines the "HAS_BCMP" symbol if the
709 bcmp() routine is available to compare strings.
710 "d_bcopy"
712 From d_bcopy.U:
713 This variable conditionally defines the "HAS_BCOPY" symbol if the
715 bcopy() routine is available to copy strings.
716 "d_bsd"
718 From Guess.U:
719 This symbol conditionally defines the symbol "BSD" when running on
721 a "BSD" system.
722 "d_bsdgetpgrp"
724 From d_getpgrp.U:
725 This variable conditionally defines "USE_BSD_GETPGRP" if getpgrp
727 needs one arguments whereas "USG" one needs none.
728 "d_bsdsetpgrp"
730 From d_setpgrp.U:
731 This variable conditionally defines "USE_BSD_SETPGRP" if setpgrp
733 needs two arguments whereas "USG" one needs none. See also
734 d_setpgid for a "POSIX" interface.
735 "d_bzero"
737 From d_bzero.U:
738 This variable conditionally defines the "HAS_BZERO" symbol if the
740 bzero() routine is available to set memory to 0.
741 "d_casti32"
743 From d_casti32.U:
744 This variable conditionally defines CASTI32, which indicates
746 whether the C compiler can cast large floats to 32-bit ints.
747 "d_castneg"
749 From d_castneg.U:
750 This variable conditionally defines "CASTNEG", which indicates
752 wether the C compiler can cast negative float to unsigned.
753 "d_charvspr"
755 From d_vprintf.U:
756 This variable conditionally defines "CHARVSPRINTF" if this system
758 has vsprintf returning type (char*). The trend seems to be to
759 declare it as "int vsprintf()".
760 "d_chown"
762 From d_chown.U:
763 This variable conditionally defines the "HAS_CHOWN" symbol, which
765 indicates to the C program that the chown() routine is available.
766 "d_chroot"
768 From d_chroot.U:
769 This variable conditionally defines the "HAS_CHROOT" symbol, which
771 indicates to the C program that the chroot() routine is available.
772 "d_chsize"
774 From d_chsize.U:
775 This variable conditionally defines the "CHSIZE" symbol, which
777 indicates to the C program that the chsize() routine is available
778 to truncate files. You might need a -lx to get this routine.
779 "d_class"
781 From d_class.U:
782 This variable conditionally defines the "HAS_CLASS" symbol, which
784 indicates to the C program that the class() routine is available.
785 "d_clearenv"
787 From d_clearenv.U:
788 This variable conditionally defines the "HAS_CLEARENV" symbol,
790 which indicates to the C program that the clearenv () routine is
791 available.
792 "d_closedir"
794 From d_closedir.U:
795 This variable conditionally defines "HAS_CLOSEDIR" if closedir() is
797 available.
798 "d_cmsghdr_s"
800 From d_cmsghdr_s.U:
801 This variable conditionally defines the "HAS_STRUCT_CMSGHDR" sym‐
803 bol, which indicates that the struct cmsghdr is supported.
804 "d_const"
806 From d_const.U:
807 This variable conditionally defines the "HASCONST" symbol, which
809 indicates to the C program that this C compiler knows about the
810 const type.
811 "d_copysignl"
813 From d_copysignl.U:
814 This variable conditionally defines the "HAS_COPYSIGNL" symbol,
816 which indicates to the C program that the copysignl() routine is
817 available. If aintl is also present we can emulate modfl.
818 "d_crypt"
820 From d_crypt.U:
821 This variable conditionally defines the "CRYPT" symbol, which indi‐
823 cates to the C program that the crypt() routine is available to
824 encrypt passwords and the like.
825 "d_crypt_r"
827 From d_crypt_r.U:
828 This variable conditionally defines the "HAS_CRYPT_R" symbol, which
830 indicates to the C program that the crypt_r() routine is available.
831 "d_csh"
833 From d_csh.U:
834 This variable conditionally defines the "CSH" symbol, which indi‐
836 cates to the C program that the C-shell exists.
837 "d_ctermid_r"
839 From d_ctermid_r.U:
840 This variable conditionally defines the "HAS_CTERMID_R" symbol,
842 which indicates to the C program that the ctermid_r() routine is
843 available.
844 "d_ctime_r"
846 From d_ctime_r.U:
847 This variable conditionally defines the "HAS_CTIME_R" symbol, which
849 indicates to the C program that the ctime_r() routine is available.
850 "d_cuserid"
852 From d_cuserid.U:
853 This variable conditionally defines the "HAS_CUSERID" symbol, which
855 indicates to the C program that the cuserid() routine is available
856 to get character login names.
857 "d_dbl_dig"
859 From d_dbl_dig.U:
860 This variable conditionally defines d_dbl_dig if this system's
862 header files provide "DBL_DIG", which is the number of significant
863 digits in a double precision number.
864 "d_dbminitproto"
866 From d_dbminitproto.U:
867 This variable conditionally defines the "HAS_DBMINIT_PROTO" symbol,
869 which indicates to the C program that the system provides a proto‐
870 type for the dbminit() function. Otherwise, it is up to the pro‐
871 gram to supply one.
872 "d_difftime"
874 From d_difftime.U:
875 This variable conditionally defines the "HAS_DIFFTIME" symbol,
877 which indicates to the C program that the difftime() routine is
878 available.
879 "d_dirfd"
881 From d_dirfd.U:
882 This variable conditionally defines the "HAS_DIRFD" constant, which
884 indicates to the C program that dirfd() is available to return the
885 file descriptor of a directory stream.
886 "d_dirnamlen"
888 From i_dirent.U:
889 This variable conditionally defines "DIRNAMLEN", which indicates to
891 the C program that the length of directory entry names is provided
892 by a d_namelen field.
893 "d_dlerror"
895 From d_dlerror.U:
896 This variable conditionally defines the "HAS_DLERROR" symbol, which
898 indicates to the C program that the dlerror() routine is available.
899 "d_dlopen"
901 From d_dlopen.U:
902 This variable conditionally defines the "HAS_DLOPEN" symbol, which
904 indicates to the C program that the dlopen() routine is available.
905 "d_dlsymun"
907 From d_dlsymun.U:
908 This variable conditionally defines "DLSYM_NEEDS_UNDERSCORE", which
910 indicates that we need to prepend an underscore to the symbol name
911 before calling dlsym().
912 "d_dosuid"
914 From d_dosuid.U:
915 This variable conditionally defines the symbol "DOSUID", which
917 tells the C program that it should insert setuid emulation code on
918 hosts which have setuid #! scripts disabled.
919 "d_drand48_r"
921 From d_drand48_r.U:
922 This variable conditionally defines the HAS_DRAND48_R symbol, which
924 indicates to the C program that the drand48_r() routine is avail‐
925 able.
926 "d_drand48proto"
928 From d_drand48proto.U:
929 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
931 which indicates to the C program that the system provides a proto‐
932 type for the drand48() function. Otherwise, it is up to the pro‐
933 gram to supply one.
934 "d_dup2"
936 From d_dup2.U:
937 This variable conditionally defines HAS_DUP2 if dup2() is available
939 to duplicate file descriptors.
940 "d_eaccess"
942 From d_eaccess.U:
943 This variable conditionally defines the "HAS_EACCESS" symbol, which
945 indicates to the C program that the eaccess() routine is available.
946 "d_endgrent"
948 From d_endgrent.U:
949 This variable conditionally defines the "HAS_ENDGRENT" symbol,
951 which indicates to the C program that the endgrent() routine is
952 available for sequential access of the group database.
953 "d_endgrent_r"
955 From d_endgrent_r.U:
956 This variable conditionally defines the "HAS_ENDGRENT_R" symbol,
958 which indicates to the C program that the endgrent_r() routine is
959 available.
960 "d_endhent"
962 From d_endhent.U:
963 This variable conditionally defines "HAS_ENDHOSTENT" if endhos‐
965 tent() is available to close whatever was being used for host
966 queries.
967 "d_endhostent_r"
969 From d_endhostent_r.U:
970 This variable conditionally defines the "HAS_ENDHOSTENT_R" symbol,
972 which indicates to the C program that the endhostent_r() routine is
973 available.
974 "d_endnent"
976 From d_endnent.U:
977 This variable conditionally defines "HAS_ENDNETENT" if endnetent()
979 is available to close whatever was being used for network queries.
980 "d_endnetent_r"
982 From d_endnetent_r.U:
983 This variable conditionally defines the "HAS_ENDNETENT_R" symbol,
985 which indicates to the C program that the endnetent_r() routine is
986 available.
987 "d_endpent"
989 From d_endpent.U:
990 This variable conditionally defines "HAS_ENDPROTOENT" if endpro‐
992 toent() is available to close whatever was being used for protocol
993 queries.
994 "d_endprotoent_r"
996 From d_endprotoent_r.U:
997 This variable conditionally defines the "HAS_ENDPROTOENT_R" symbol,
999 which indicates to the C program that the endprotoent_r() routine
1000 is available.
1001 "d_endpwent"
1003 From d_endpwent.U:
1004 This variable conditionally defines the "HAS_ENDPWENT" symbol,
1006 which indicates to the C program that the endpwent() routine is
1007 available for sequential access of the passwd database.
1008 "d_endpwent_r"
1010 From d_endpwent_r.U:
1011 This variable conditionally defines the "HAS_ENDPWENT_R" symbol,
1013 which indicates to the C program that the endpwent_r() routine is
1014 available.
1015 "d_endsent"
1017 From d_endsent.U:
1018 This variable conditionally defines "HAS_ENDSERVENT" if endser‐
1020 vent() is available to close whatever was being used for service
1021 queries.
1022 "d_endservent_r"
1024 From d_endservent_r.U:
1025 This variable conditionally defines the "HAS_ENDSERVENT_R" symbol,
1027 which indicates to the C program that the endservent_r() routine is
1028 available.
1029 "d_eofnblk"
1031 From nblock_io.U:
1032 This variable conditionally defines "EOF_NONBLOCK" if "EOF" can be
1034 seen when reading from a non-blocking I/O source.
1035 "d_eunice"
1037 From Guess.U:
1038 This variable conditionally defines the symbols "EUNICE" and "VAX",
1040 which alerts the C program that it must deal with ideosyncracies of
1041 "VMS".
1042 "d_faststdio"
1044 From d_faststdio.U:
1045 This variable conditionally defines the "HAS_FAST_STDIO" symbol,
1047 which indicates to the C program that the "fast stdio" is available
1048 to manipulate the stdio buffers directly.
1049 "d_fchdir"
1051 From d_fchdir.U:
1052 This variable conditionally defines the "HAS_FCHDIR" symbol, which
1054 indicates to the C program that the fchdir() routine is available.
1055 "d_fchmod"
1057 From d_fchmod.U:
1058 This variable conditionally defines the "HAS_FCHMOD" symbol, which
1060 indicates to the C program that the fchmod() routine is available
1061 to change mode of opened files.
1062 "d_fchown"
1064 From d_fchown.U:
1065 This variable conditionally defines the "HAS_FCHOWN" symbol, which
1067 indicates to the C program that the fchown() routine is available
1068 to change ownership of opened files.
1069 "d_fcntl"
1071 From d_fcntl.U:
1072 This variable conditionally defines the "HAS_FCNTL" symbol, and
1074 indicates whether the fcntl() function exists
1075 "d_fcntl_can_lock"
1077 From d_fcntl_can_lock.U:
1078 This variable conditionally defines the "FCNTL_CAN_LOCK" symbol and
1080 indicates whether file locking with fcntl() works.
1081 "d_fd_macros"
1083 From d_fd_set.U:
1084 This variable contains the eventual value of the "HAS_FD_MACROS"
1086 symbol, which indicates if your C compiler knows about the macros
1087 which manipulate an fd_set.
1088 "d_fd_set"
1090 From d_fd_set.U:
1091 This variable contains the eventual value of the "HAS_FD_SET" sym‐
1093 bol, which indicates if your C compiler knows about the fd_set
1094 typedef.
1095 "d_fds_bits"
1097 From d_fd_set.U:
1098 This variable contains the eventual value of the "HAS_FDS_BITS"
1100 symbol, which indicates if your fd_set typedef contains the
1101 fds_bits member. If you have an fd_set typedef, but the dweebs who
1102 installed it did a half-fast job and neglected to provide the
1103 macros to manipulate an fd_set, "HAS_FDS_BITS" will let us know how
1104 to fix the gaffe.
1105 "d_fgetpos"
1107 From d_fgetpos.U:
1108 This variable conditionally defines "HAS_FGETPOS" if fgetpos() is
1110 available to get the file position indicator.
1111 "d_finite"
1113 From d_finite.U:
1114 This variable conditionally defines the "HAS_FINITE" symbol, which
1116 indicates to the C program that the finite() routine is available.
1117 "d_finitel"
1119 From d_finitel.U:
1120 This variable conditionally defines the "HAS_FINITEL" symbol, which
1122 indicates to the C program that the finitel() routine is available.
1123 "d_flexfnam"
1125 From d_flexfnam.U:
1126 This variable conditionally defines the "FLEXFILENAMES" symbol,
1128 which indicates that the system supports filenames longer than 14
1129 characters.
1130 "d_flock"
1132 From d_flock.U:
1133 This variable conditionally defines "HAS_FLOCK" if flock() is
1135 available to do file locking.
1136 "d_flockproto"
1138 From d_flockproto.U:
1139 This variable conditionally defines the "HAS_FLOCK_PROTO" symbol,
1141 which indicates to the C program that the system provides a proto‐
1142 type for the flock() function. Otherwise, it is up to the program
1143 to supply one.
1144 "d_fork"
1146 From d_fork.U:
1147 This variable conditionally defines the "HAS_FORK" symbol, which
1149 indicates to the C program that the fork() routine is available.
1150 "d_fp_class"
1152 From d_fp_class.U:
1153 This variable conditionally defines the "HAS_FP_CLASS" symbol,
1155 which indicates to the C program that the fp_class() routine is
1156 available.
1157 "d_fpathconf"
1159 From d_pathconf.U:
1160 This variable conditionally defines the "HAS_FPATHCONF" symbol,
1162 which indicates to the C program that the pathconf() routine is
1163 available to determine file-system related limits and options asso‐
1164 ciated with a given open file descriptor.
1165 "d_fpclass"
1167 From d_fpclass.U:
1168 This variable conditionally defines the "HAS_FPCLASS" symbol, which
1170 indicates to the C program that the fpclass() routine is available.
1171 "d_fpclassify"
1173 From d_fpclassify.U:
1174 This variable conditionally defines the "HAS_FPCLASSIFY" symbol,
1176 which indicates to the C program that the fpclassify() routine is
1177 available.
1178 "d_fpclassl"
1180 From d_fpclassl.U:
1181 This variable conditionally defines the "HAS_FPCLASSL" symbol,
1183 which indicates to the C program that the fpclassl() routine is
1184 available.
1185 "d_fpos64_t"
1187 From d_fpos64_t.U:
1188 This symbol will be defined if the C compiler supports fpos64_t.
1190 "d_frexpl"
1192 From d_frexpl.U:
1193 This variable conditionally defines the "HAS_FREXPL" symbol, which
1195 indicates to the C program that the frexpl() routine is available.
1196 "d_fs_data_s"
1198 From d_fs_data_s.U:
1199 This variable conditionally defines the "HAS_STRUCT_FS_DATA" sym‐
1201 bol, which indicates that the struct fs_data is supported.
1202 "d_fseeko"
1204 From d_fseeko.U:
1205 This variable conditionally defines the "HAS_FSEEKO" symbol, which
1207 indicates to the C program that the fseeko() routine is available.
1208 "d_fsetpos"
1210 From d_fsetpos.U:
1211 This variable conditionally defines "HAS_FSETPOS" if fsetpos() is
1213 available to set the file position indicator.
1214 "d_fstatfs"
1216 From d_fstatfs.U:
1217 This variable conditionally defines the "HAS_FSTATFS" symbol, which
1219 indicates to the C program that the fstatfs() routine is available.
1220 "d_fstatvfs"
1222 From d_statvfs.U:
1223 This variable conditionally defines the "HAS_FSTATVFS" symbol,
1225 which indicates to the C program that the fstatvfs() routine is
1226 available.
1227 "d_fsync"
1229 From d_fsync.U:
1230 This variable conditionally defines the "HAS_FSYNC" symbol, which
1232 indicates to the C program that the fsync() routine is available.
1233 "d_ftello"
1235 From d_ftello.U:
1236 This variable conditionally defines the "HAS_FTELLO" symbol, which
1238 indicates to the C program that the ftello() routine is available.
1239 "d_ftime"
1241 From d_ftime.U:
1242 This variable conditionally defines the "HAS_FTIME" symbol, which
1244 indicates that the ftime() routine exists. The ftime() routine is
1245 basically a sub-second accuracy clock.
1246 "d_futimes"
1248 From f_futimes.U:
1249 This variable conditionally defines the "HAS_FUTIMES" symbol, which
1251 indicates to the C program that the futimes() routine is available.
1252 "d_Gconvert"
1254 From d_gconvert.U:
1255 This variable holds what Gconvert is defined as to convert floating
1257 point numbers into strings. By default, Configure sets "this"
1258 macro to use the first of gconvert, gcvt, or sprintf that pass
1259 sprintf-%g-like behaviour tests. If perl is using long doubles,
1260 the macro uses the first of the following functions that pass Con‐
1261 figure's tests: qgcvt, sprintf (if Configure knows how to make
1262 sprintf format long doubles--see sPRIgldbl), gconvert, gcvt, and
1263 sprintf (casting to double). The gconvert_preference and gcon‐
1264 vert_ld_preference variables can be used to alter Configure's pref‐
1265 erences, for doubles and long doubles, respectively. If present,
1266 they contain a space-separated list of one or more of the above
1267 function names in the order they should be tried.
1268 d_Gconvert may be set to override Configure with a platform- spe‐
1270 cific function. If this function expects a double, a different
1271 value may need to be set by the uselongdouble.cbu call-back unit so
1272 that long doubles can be formatted without loss of precision.
1273 "d_getcwd"
1275 From d_getcwd.U:
1276 This variable conditionally defines the "HAS_GETCWD" symbol, which
1278 indicates to the C program that the getcwd() routine is available
1279 to get the current working directory.
1280 "d_getespwnam"
1282 From d_getespwnam.U:
1283 This variable conditionally defines "HAS_GETESPWNAM" if getespw‐
1285 nam() is available to retrieve enchanced (shadow) password entries
1286 by name.
1287 "d_getfsstat"
1289 From d_getfsstat.U:
1290 This variable conditionally defines the "HAS_GETFSSTAT" symbol,
1292 which indicates to the C program that the getfsstat() routine is
1293 available.
1294 "d_getgrent"
1296 From d_getgrent.U:
1297 This variable conditionally defines the "HAS_GETGRENT" symbol,
1299 which indicates to the C program that the getgrent() routine is
1300 available for sequential access of the group database.
1301 "d_getgrent_r"
1303 From d_getgrent_r.U:
1304 This variable conditionally defines the "HAS_GETGRENT_R" symbol,
1306 which indicates to the C program that the getgrent_r() routine is
1307 available.
1308 "d_getgrgid_r"
1310 From d_getgrgid_r.U:
1311 This variable conditionally defines the "HAS_GETGRGID_R" symbol,
1313 which indicates to the C program that the getgrgid_r() routine is
1314 available.
1315 "d_getgrnam_r"
1317 From d_getgrnam_r.U:
1318 This variable conditionally defines the "HAS_GETGRNAM_R" symbol,
1320 which indicates to the C program that the getgrnam_r() routine is
1321 available.
1322 "d_getgrps"
1324 From d_getgrps.U:
1325 This variable conditionally defines the "HAS_GETGROUPS" symbol,
1327 which indicates to the C program that the getgroups() routine is
1328 available to get the list of process groups.
1329 "d_gethbyaddr"
1331 From d_gethbyad.U:
1332 This variable conditionally defines the "HAS_GETHOSTBYADDR" symbol,
1334 which indicates to the C program that the gethostbyaddr() routine
1335 is available to look up hosts by their "IP" addresses.
1336 "d_gethbyname"
1338 From d_gethbynm.U:
1339 This variable conditionally defines the "HAS_GETHOSTBYNAME" symbol,
1341 which indicates to the C program that the gethostbyname() routine
1342 is available to look up host names in some data base or other.
1343 "d_gethent"
1345 From d_gethent.U:
1346 This variable conditionally defines "HAS_GETHOSTENT" if gethos‐
1348 tent() is available to look up host names in some data base or
1349 another.
1350 "d_gethname"
1352 From d_gethname.U:
1353 This variable conditionally defines the "HAS_GETHOSTNAME" symbol,
1355 which indicates to the C program that the gethostname() routine may
1356 be used to derive the host name.
1357 "d_gethostbyaddr_r"
1359 From d_gethostbyaddr_r.U:
1360 This variable conditionally defines the "HAS_GETHOSTBYADDR_R" sym‐
1362 bol, which indicates to the C program that the gethostbyaddr_r()
1363 routine is available.
1364 "d_gethostbyname_r"
1366 From d_gethostbyname_r.U:
1367 This variable conditionally defines the "HAS_GETHOSTBYNAME_R" sym‐
1369 bol, which indicates to the C program that the gethostbyname_r()
1370 routine is available.
1371 "d_gethostent_r"
1373 From d_gethostent_r.U:
1374 This variable conditionally defines the "HAS_GETHOSTENT_R" symbol,
1376 which indicates to the C program that the gethostent_r() routine is
1377 available.
1378 "d_gethostprotos"
1380 From d_gethostprotos.U:
1381 This variable conditionally defines the "HAS_GETHOST_PROTOS" sym‐
1383 bol, which indicates to the C program that <netdb.h> supplies pro‐
1384 totypes for the various gethost*() functions. See also netdbtype.U
1385 for probing for various netdb types.
1386 "d_getitimer"
1388 From d_getitimer.U:
1389 This variable conditionally defines the "HAS_GETITIMER" symbol,
1391 which indicates to the C program that the getitimer() routine is
1392 available.
1393 "d_getlogin"
1395 From d_getlogin.U:
1396 This variable conditionally defines the "HAS_GETLOGIN" symbol,
1398 which indicates to the C program that the getlogin() routine is
1399 available to get the login name.
1400 "d_getlogin_r"
1402 From d_getlogin_r.U:
1403 This variable conditionally defines the "HAS_GETLOGIN_R" symbol,
1405 which indicates to the C program that the getlogin_r() routine is
1406 available.
1407 "d_getmnt"
1409 From d_getmnt.U:
1410 This variable conditionally defines the "HAS_GETMNT" symbol, which
1412 indicates to the C program that the getmnt() routine is available
1413 to retrieve one or more mount info blocks by filename.
1414 "d_getmntent"
1416 From d_getmntent.U:
1417 This variable conditionally defines the "HAS_GETMNTENT" symbol,
1419 which indicates to the C program that the getmntent() routine is
1420 available to iterate through mounted files to get their mount info.
1421 "d_getnbyaddr"
1423 From d_getnbyad.U:
1424 This variable conditionally defines the "HAS_GETNETBYADDR" symbol,
1426 which indicates to the C program that the getnetbyaddr() routine is
1427 available to look up networks by their "IP" addresses.
1428 "d_getnbyname"
1430 From d_getnbynm.U:
1431 This variable conditionally defines the "HAS_GETNETBYNAME" symbol,
1433 which indicates to the C program that the getnetbyname() routine is
1434 available to look up networks by their names.
1435 "d_getnent"
1437 From d_getnent.U:
1438 This variable conditionally defines "HAS_GETNETENT" if getnetent()
1440 is available to look up network names in some data base or another.
1441 "d_getnetbyaddr_r"
1443 From d_getnetbyaddr_r.U:
1444 This variable conditionally defines the "HAS_GETNETBYADDR_R" sym‐
1446 bol, which indicates to the C program that the getnetbyaddr_r()
1447 routine is available.
1448 "d_getnetbyname_r"
1450 From d_getnetbyname_r.U:
1451 This variable conditionally defines the "HAS_GETNETBYNAME_R" sym‐
1453 bol, which indicates to the C program that the getnetbyname_r()
1454 routine is available.
1455 "d_getnetent_r"
1457 From d_getnetent_r.U:
1458 This variable conditionally defines the "HAS_GETNETENT_R" symbol,
1460 which indicates to the C program that the getnetent_r() routine is
1461 available.
1462 "d_getnetprotos"
1464 From d_getnetprotos.U:
1465 This variable conditionally defines the "HAS_GETNET_PROTOS" symbol,
1467 which indicates to the C program that <netdb.h> supplies prototypes
1468 for the various getnet*() functions. See also netdbtype.U for
1469 probing for various netdb types.
1470 "d_getpagsz"
1472 From d_getpagsz.U:
1473 This variable conditionally defines "HAS_GETPAGESIZE" if getpage‐
1475 size() is available to get the system page size.
1476 "d_getpbyname"
1478 From d_getprotby.U:
1479 This variable conditionally defines the "HAS_GETPROTOBYNAME" sym‐
1481 bol, which indicates to the C program that the getprotobyname()
1482 routine is available to look up protocols by their name.
1483 "d_getpbynumber"
1485 From d_getprotby.U:
1486 This variable conditionally defines the "HAS_GETPROTOBYNUMBER" sym‐
1488 bol, which indicates to the C program that the getprotobynumber()
1489 routine is available to look up protocols by their number.
1490 "d_getpent"
1492 From d_getpent.U:
1493 This variable conditionally defines "HAS_GETPROTOENT" if getpro‐
1495 toent() is available to look up protocols in some data base or
1496 another.
1497 "d_getpgid"
1499 From d_getpgid.U:
1500 This variable conditionally defines the "HAS_GETPGID" symbol, which
1502 indicates to the C program that the getpgid(pid) function is avail‐
1503 able to get the process group id.
1504 "d_getpgrp2"
1506 From d_getpgrp2.U:
1507 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1509 indicates to the C program that the getpgrp2() (as in DG/"UX") rou‐
1510 tine is available to get the current process group.
1511 "d_getpgrp"
1513 From d_getpgrp.U:
1514 This variable conditionally defines "HAS_GETPGRP" if getpgrp() is
1516 available to get the current process group.
1517 "d_getppid"
1519 From d_getppid.U:
1520 This variable conditionally defines the "HAS_GETPPID" symbol, which
1522 indicates to the C program that the getppid() routine is available
1523 to get the parent process "ID".
1524 "d_getprior"
1526 From d_getprior.U:
1527 This variable conditionally defines "HAS_GETPRIORITY" if getprior‐
1529 ity() is available to get a process's priority.
1530 "d_getprotobyname_r"
1532 From d_getprotobyname_r.U:
1533 This variable conditionally defines the "HAS_GETPROTOBYNAME_R" sym‐
1535 bol, which indicates to the C program that the getprotobyname_r()
1536 routine is available.
1537 "d_getprotobynumber_r"
1539 From d_getprotobynumber_r.U:
1540 This variable conditionally defines the "HAS_GETPROTOBYNUMBER_R"
1542 symbol, which indicates to the C program that the getprotobynum‐
1543 ber_r() routine is available.
1544 "d_getprotoent_r"
1546 From d_getprotoent_r.U:
1547 This variable conditionally defines the "HAS_GETPROTOENT_R" symbol,
1549 which indicates to the C program that the getprotoent_r() routine
1550 is available.
1551 "d_getprotoprotos"
1553 From d_getprotoprotos.U:
1554 This variable conditionally defines the "HAS_GETPROTO_PROTOS" sym‐
1556 bol, which indicates to the C program that <netdb.h> supplies pro‐
1557 totypes for the various getproto*() functions. See also netdb‐
1558 type.U for probing for various netdb types.
1559 "d_getprpwnam"
1561 From d_getprpwnam.U:
1562 This variable conditionally defines "HAS_GETPRPWNAM" if getprpw‐
1564 nam() is available to retrieve protected (shadow) password entries
1565 by name.
1566 "d_getpwent"
1568 From d_getpwent.U:
1569 This variable conditionally defines the "HAS_GETPWENT" symbol,
1571 which indicates to the C program that the getpwent() routine is
1572 available for sequential access of the passwd database.
1573 "d_getpwent_r"
1575 From d_getpwent_r.U:
1576 This variable conditionally defines the "HAS_GETPWENT_R" symbol,
1578 which indicates to the C program that the getpwent_r() routine is
1579 available.
1580 "d_getpwnam_r"
1582 From d_getpwnam_r.U:
1583 This variable conditionally defines the "HAS_GETPWNAM_R" symbol,
1585 which indicates to the C program that the getpwnam_r() routine is
1586 available.
1587 "d_getpwuid_r"
1589 From d_getpwuid_r.U:
1590 This variable conditionally defines the "HAS_GETPWUID_R" symbol,
1592 which indicates to the C program that the getpwuid_r() routine is
1593 available.
1594 "d_getsbyname"
1596 From d_getsrvby.U:
1597 This variable conditionally defines the "HAS_GETSERVBYNAME" symbol,
1599 which indicates to the C program that the getservbyname() routine
1600 is available to look up services by their name.
1601 "d_getsbyport"
1603 From d_getsrvby.U:
1604 This variable conditionally defines the "HAS_GETSERVBYPORT" symbol,
1606 which indicates to the C program that the getservbyport() routine
1607 is available to look up services by their port.
1608 "d_getsent"
1610 From d_getsent.U:
1611 This variable conditionally defines "HAS_GETSERVENT" if getser‐
1613 vent() is available to look up network services in some data base
1614 or another.
1615 "d_getservbyname_r"
1617 From d_getservbyname_r.U:
1618 This variable conditionally defines the "HAS_GETSERVBYNAME_R" sym‐
1620 bol, which indicates to the C program that the getservbyname_r()
1621 routine is available.
1622 "d_getservbyport_r"
1624 From d_getservbyport_r.U:
1625 This variable conditionally defines the "HAS_GETSERVBYPORT_R" sym‐
1627 bol, which indicates to the C program that the getservbyport_r()
1628 routine is available.
1629 "d_getservent_r"
1631 From d_getservent_r.U:
1632 This variable conditionally defines the "HAS_GETSERVENT_R" symbol,
1634 which indicates to the C program that the getservent_r() routine is
1635 available.
1636 "d_getservprotos"
1638 From d_getservprotos.U:
1639 This variable conditionally defines the "HAS_GETSERV_PROTOS" sym‐
1641 bol, which indicates to the C program that <netdb.h> supplies pro‐
1642 totypes for the various getserv*() functions. See also netdbtype.U
1643 for probing for various netdb types.
1644 "d_getspnam"
1646 From d_getspnam.U:
1647 This variable conditionally defines "HAS_GETSPNAM" if getspnam() is
1649 available to retrieve SysV shadow password entries by name.
1650 "d_getspnam_r"
1652 From d_getspnam_r.U:
1653 This variable conditionally defines the "HAS_GETSPNAM_R" symbol,
1655 which indicates to the C program that the getspnam_r() routine is
1656 available.
1657 "d_gettimeod"
1659 From d_ftime.U:
1660 This variable conditionally defines the "HAS_GETTIMEOFDAY" symbol,
1662 which indicates that the gettimeofday() system call exists (to
1663 obtain a sub-second accuracy clock). You should probably include
1664 <sys/resource.h>.
1665 "d_gmtime_r"
1667 From d_gmtime_r.U:
1668 This variable conditionally defines the "HAS_GMTIME_R" symbol,
1670 which indicates to the C program that the gmtime_r() routine is
1671 available.
1672 "d_gnulibc"
1674 From d_gnulibc.U:
1675 Defined if we're dealing with the "GNU" C Library.
1677 "d_grpasswd"
1679 From i_grp.U:
1680 This variable conditionally defines "GRPASSWD", which indicates
1682 that struct group in <grp.h> contains gr_passwd.
1683 "d_hasmntopt"
1685 From d_hasmntopt.U:
1686 This variable conditionally defines the "HAS_HASMNTOPT" symbol,
1688 which indicates to the C program that the hasmntopt() routine is
1689 available to query the mount options of file systems.
1690 "d_htonl"
1692 From d_htonl.U:
1693 This variable conditionally defines "HAS_HTONL" if htonl() and its
1695 friends are available to do network order byte swapping.
1696 "d_ilogbl"
1698 From d_ilogbl.U:
1699 This variable conditionally defines the "HAS_ILOGBL" symbol, which
1701 indicates to the C program that the ilogbl() routine is available.
1702 If scalbnl is also present we can emulate frexpl.
1703 "d_index"
1705 From d_strchr.U:
1706 This variable conditionally defines "HAS_INDEX" if index() and
1708 rindex() are available for string searching.
1709 "d_inetaton"
1711 From d_inetaton.U:
1712 This variable conditionally defines the "HAS_INET_ATON" symbol,
1714 which indicates to the C program that the inet_aton() function is
1715 available to parse "IP" address "dotted-quad" strings.
1716 "d_int64_t"
1718 From d_int64_t.U:
1719 This symbol will be defined if the C compiler supports int64_t.
1721 "d_isascii"
1723 From d_isascii.U:
1724 This variable conditionally defines the "HAS_ISASCII" constant,
1726 which indicates to the C program that isascii() is available.
1727 "d_isfinite"
1729 From d_isfinite.U:
1730 This variable conditionally defines the "HAS_ISFINITE" symbol,
1732 which indicates to the C program that the isfinite() routine is
1733 available.
1734 "d_isinf"
1736 From d_isinf.U:
1737 This variable conditionally defines the "HAS_ISINF" symbol, which
1739 indicates to the C program that the isinf() routine is available.
1740 "d_isnan"
1742 From d_isnan.U:
1743 This variable conditionally defines the "HAS_ISNAN" symbol, which
1745 indicates to the C program that the isnan() routine is available.
1746 "d_isnanl"
1748 From d_isnanl.U:
1749 This variable conditionally defines the "HAS_ISNANL" symbol, which
1751 indicates to the C program that the isnanl() routine is available.
1752 "d_killpg"
1754 From d_killpg.U:
1755 This variable conditionally defines the "HAS_KILLPG" symbol, which
1757 indicates to the C program that the killpg() routine is available
1758 to kill process groups.
1759 "d_lchown"
1761 From d_lchown.U:
1762 This variable conditionally defines the "HAS_LCHOWN" symbol, which
1764 indicates to the C program that the lchown() routine is available
1765 to operate on a symbolic link (instead of following the link).
1766 "d_ldbl_dig"
1768 From d_ldbl_dig.U:
1769 This variable conditionally defines d_ldbl_dig if this system's
1771 header files provide "LDBL_DIG", which is the number of significant
1772 digits in a long double precision number.
1773 "d_link"
1775 From d_link.U:
1776 This variable conditionally defines "HAS_LINK" if link() is avail‐
1778 able to create hard links.
1779 "d_localtime_r"
1781 From d_localtime_r.U:
1782 This variable conditionally defines the "HAS_LOCALTIME_R" symbol,
1784 which indicates to the C program that the localtime_r() routine is
1785 available.
1786 "d_locconv"
1788 From d_locconv.U:
1789 This variable conditionally defines "HAS_LOCALECONV" if locale‐
1791 conv() is available for numeric and monetary formatting conven‐
1792 tions.
1793 "d_lockf"
1795 From d_lockf.U:
1796 This variable conditionally defines "HAS_LOCKF" if lockf() is
1798 available to do file locking.
1799 "d_longdbl"
1801 From d_longdbl.U:
1802 This variable conditionally defines "HAS_LONG_DOUBLE" if the long
1804 double type is supported.
1805 "d_longlong"
1807 From d_longlong.U:
1808 This variable conditionally defines "HAS_LONG_LONG" if the long
1810 long type is supported.
1811 "d_lseekproto"
1813 From d_lseekproto.U:
1814 This variable conditionally defines the "HAS_LSEEK_PROTO" symbol,
1816 which indicates to the C program that the system provides a proto‐
1817 type for the lseek() function. Otherwise, it is up to the program
1818 to supply one.
1819 "d_lstat"
1821 From d_lstat.U:
1822 This variable conditionally defines "HAS_LSTAT" if lstat() is
1824 available to do file stats on symbolic links.
1825 "d_madvise"
1827 From d_madvise.U:
1828 This variable conditionally defines "HAS_MADVISE" if madvise() is
1830 available to map a file into memory.
1831 "d_malloc_size"
1833 From d_malloc_size.U:
1834 This symbol, if defined, indicates that the malloc_size routine is
1836 available for use.
1837 "d_malloc_good_size"
1839 From d_malloc_good_size.U:
1840 This symbol, if defined, indicates that the malloc_good_size rou‐
1842 tine is available for use.
1843 "d_mblen"
1845 From d_mblen.U:
1846 This variable conditionally defines the "HAS_MBLEN" symbol, which
1848 indicates to the C program that the mblen() routine is available to
1849 find the number of bytes in a multibye character.
1850 "d_mbstowcs"
1852 From d_mbstowcs.U:
1853 This variable conditionally defines the "HAS_MBSTOWCS" symbol,
1855 which indicates to the C program that the mbstowcs() routine is
1856 available to convert a multibyte string into a wide character
1857 string.
1858 "d_mbtowc"
1860 From d_mbtowc.U:
1861 This variable conditionally defines the "HAS_MBTOWC" symbol, which
1863 indicates to the C program that the mbtowc() routine is available
1864 to convert multibyte to a wide character.
1865 "d_memchr"
1867 From d_memchr.U:
1868 This variable conditionally defines the "HAS_MEMCHR" symbol, which
1870 indicates to the C program that the memchr() routine is available
1871 to locate characters within a C string.
1872 "d_memcmp"
1874 From d_memcmp.U:
1875 This variable conditionally defines the "HAS_MEMCMP" symbol, which
1877 indicates to the C program that the memcmp() routine is available
1878 to compare blocks of memory.
1879 "d_memcpy"
1881 From d_memcpy.U:
1882 This variable conditionally defines the "HAS_MEMCPY" symbol, which
1884 indicates to the C program that the memcpy() routine is available
1885 to copy blocks of memory.
1886 "d_memmove"
1888 From d_memmove.U:
1889 This variable conditionally defines the "HAS_MEMMOVE" symbol, which
1891 indicates to the C program that the memmove() routine is available
1892 to copy potentatially overlapping blocks of memory.
1893 "d_memset"
1895 From d_memset.U:
1896 This variable conditionally defines the "HAS_MEMSET" symbol, which
1898 indicates to the C program that the memset() routine is available
1899 to set blocks of memory.
1900 "d_mkdir"
1902 From d_mkdir.U:
1903 This variable conditionally defines the "HAS_MKDIR" symbol, which
1905 indicates to the C program that the mkdir() routine is available to
1906 create directories..
1907 "d_mkdtemp"
1909 From d_mkdtemp.U:
1910 This variable conditionally defines the "HAS_MKDTEMP" symbol, which
1912 indicates to the C program that the mkdtemp() routine is available
1913 to exclusively create a uniquely named temporary directory.
1914 "d_mkfifo"
1916 From d_mkfifo.U:
1917 This variable conditionally defines the "HAS_MKFIFO" symbol, which
1919 indicates to the C program that the mkfifo() routine is available.
1920 "d_mkstemp"
1922 From d_mkstemp.U:
1923 This variable conditionally defines the "HAS_MKSTEMP" symbol, which
1925 indicates to the C program that the mkstemp() routine is available
1926 to exclusively create and open a uniquely named temporary file.
1927 "d_mkstemps"
1929 From d_mkstemps.U:
1930 This variable conditionally defines the "HAS_MKSTEMPS" symbol,
1932 which indicates to the C program that the mkstemps() routine is
1933 available to exclusively create and open a uniquely named (with a
1934 suffix) temporary file.
1935 "d_mktime"
1937 From d_mktime.U:
1938 This variable conditionally defines the "HAS_MKTIME" symbol, which
1940 indicates to the C program that the mktime() routine is available.
1941 "d_mmap"
1943 From d_mmap.U:
1944 This variable conditionally defines "HAS_MMAP" if mmap() is avail‐
1946 able to map a file into memory.
1947 "d_modfl"
1949 From d_modfl.U:
1950 This variable conditionally defines the "HAS_MODFL" symbol, which
1952 indicates to the C program that the modfl() routine is available.
1953 "d_modfl_pow32_bug"
1955 From d_modfl.U:
1956 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1958 which indicates that modfl() is broken for long doubles >= pow(2,
1959 32). For example from 4294967303.150000 one would get
1960 4294967302.000000 and 1.150000. The bug has been seen in certain
1961 versions of glibc, release 2.2.2 is known to be okay.
1962 "d_modflproto"
1964 From d_modfl.U:
1965 This symbol, if defined, indicates that the system provides a pro‐
1967 totype for the modfl() function. Otherwise, it is up to the pro‐
1968 gram to supply one. C99 says it should be long double modfl(long
1969 double, long double *);
1970 "d_mprotect"
1972 From d_mprotect.U:
1973 This variable conditionally defines "HAS_MPROTECT" if mprotect() is
1975 available to modify the access protection of a memory mapped file.
1976 "d_msg"
1978 From d_msg.U:
1979 This variable conditionally defines the "HAS_MSG" symbol, which
1981 indicates that the entire msg*(2) library is present.
1982 "d_msg_ctrunc"
1984 From d_socket.U:
1985 This variable conditionally defines the "HAS_MSG_CTRUNC" symbol,
1987 which indicates that the "MSG_CTRUNC" is available. #ifdef is not
1988 enough because it may be an enum, glibc has been known to do this.
1989 "d_msg_dontroute"
1991 From d_socket.U:
1992 This variable conditionally defines the "HAS_MSG_DONTROUTE" symbol,
1994 which indicates that the "MSG_DONTROUTE" is available. #ifdef is
1995 not enough because it may be an enum, glibc has been known to do
1996 this.
1997 "d_msg_oob"
1999 From d_socket.U:
2000 This variable conditionally defines the "HAS_MSG_OOB" symbol, which
2002 indicates that the "MSG_OOB" is available. #ifdef is not enough
2003 because it may be an enum, glibc has been known to do this.
2004 "d_msg_peek"
2006 From d_socket.U:
2007 This variable conditionally defines the "HAS_MSG_PEEK" symbol,
2009 which indicates that the "MSG_PEEK" is available. #ifdef is not
2010 enough because it may be an enum, glibc has been known to do this.
2011 "d_msg_proxy"
2013 From d_socket.U:
2014 This variable conditionally defines the "HAS_MSG_PROXY" symbol,
2016 which indicates that the "MSG_PROXY" is available. #ifdef is not
2017 enough because it may be an enum, glibc has been known to do this.
2018 "d_msgctl"
2020 From d_msgctl.U:
2021 This variable conditionally defines the "HAS_MSGCTL" symbol, which
2023 indicates to the C program that the msgctl() routine is available.
2024 "d_msgget"
2026 From d_msgget.U:
2027 This variable conditionally defines the "HAS_MSGGET" symbol, which
2029 indicates to the C program that the msgget() routine is available.
2030 "d_msghdr_s"
2032 From d_msghdr_s.U:
2033 This variable conditionally defines the "HAS_STRUCT_MSGHDR" symbol,
2035 which indicates that the struct msghdr is supported.
2036 "d_msgrcv"
2038 From d_msgrcv.U:
2039 This variable conditionally defines the "HAS_MSGRCV" symbol, which
2041 indicates to the C program that the msgrcv() routine is available.
2042 "d_msgsnd"
2044 From d_msgsnd.U:
2045 This variable conditionally defines the "HAS_MSGSND" symbol, which
2047 indicates to the C program that the msgsnd() routine is available.
2048 "d_msync"
2050 From d_msync.U:
2051 This variable conditionally defines "HAS_MSYNC" if msync() is
2053 available to synchronize a mapped file.
2054 "d_munmap"
2056 From d_munmap.U:
2057 This variable conditionally defines "HAS_MUNMAP" if munmap() is
2059 available to unmap a region mapped by mmap().
2060 "d_mymalloc"
2062 From mallocsrc.U:
2063 This variable conditionally defines "MYMALLOC" in case other parts
2065 of the source want to take special action if "MYMALLOC" is used.
2066 This may include different sorts of profiling or error detection.
2067 "d_nanosleep"
2069 From d_nanosleep.U:
2070 This variable conditionally defines "HAS_NANOSLEEP" if nanosleep()
2072 is available to sleep with 1E-9 sec accuracy.
2073 "d_nice"
2075 From d_nice.U:
2076 This variable conditionally defines the "HAS_NICE" symbol, which
2078 indicates to the C program that the nice() routine is available.
2079 "d_nl_langinfo"
2081 From d_nl_langinfo.U:
2082 This variable conditionally defines the "HAS_NL_LANGINFO" symbol,
2084 which indicates to the C program that the nl_langinfo() routine is
2085 available.
2086 "d_nv_preserves_uv"
2088 From perlxv.U:
2089 This variable indicates whether a variable of type nvtype can pre‐
2091 serve all the bits a variable of type uvtype.
2092 "d_nv_zero_is_allbits_zero"
2094 From perlxv.U:
2095 This variable indicates whether a variable of type nvtype stores
2097 0.0 in memory as all bits zero.
2098 "d_off64_t"
2100 From d_off64_t.U:
2101 This symbol will be defined if the C compiler supports off64_t.
2103 "d_old_pthread_create_joinable"
2105 From d_pthrattrj.U:
2106 This variable conditionally defines pthread_create_joinable. undef
2108 if pthread.h defines "PTHREAD_CREATE_JOINABLE".
2109 "d_oldpthreads"
2111 From usethreads.U:
2112 This variable conditionally defines the "OLD_PTHREADS_API" symbol,
2114 and indicates that Perl should be built to use the old draft
2115 "POSIX" threads "API". This is only potentially meaningful if
2116 usethreads is set.
2117 "d_oldsock"
2119 From d_socket.U:
2120 This variable conditionally defines the "OLDSOCKET" symbol, which
2122 indicates that the "BSD" socket interface is based on 4.1c and not
2123 4.2.
2124 "d_open3"
2126 From d_open3.U:
2127 This variable conditionally defines the HAS_OPEN3 manifest con‐
2129 stant, which indicates to the C program that the 3 argument version
2130 of the open(2) function is available.
2131 "d_pathconf"
2133 From d_pathconf.U:
2134 This variable conditionally defines the "HAS_PATHCONF" symbol,
2136 which indicates to the C program that the pathconf() routine is
2137 available to determine file-system related limits and options asso‐
2138 ciated with a given filename.
2139 "d_pause"
2141 From d_pause.U:
2142 This variable conditionally defines the "HAS_PAUSE" symbol, which
2144 indicates to the C program that the pause() routine is available to
2145 suspend a process until a signal is received.
2146 "d_perl_otherlibdirs"
2148 From otherlibdirs.U:
2149 This variable conditionally defines "PERL_OTHERLIBDIRS", which con‐
2151 tains a colon-separated set of paths for the perl binary to include
2152 in @"INC". See also otherlibdirs.
2153 "d_phostname"
2155 From d_gethname.U:
2156 This variable conditionally defines the "HAS_PHOSTNAME" symbol,
2158 which contains the shell command which, when fed to popen(), may be
2159 used to derive the host name.
2160 "d_pipe"
2162 From d_pipe.U:
2163 This variable conditionally defines the "HAS_PIPE" symbol, which
2165 indicates to the C program that the pipe() routine is available to
2166 create an inter-process channel.
2167 "d_poll"
2169 From d_poll.U:
2170 This variable conditionally defines the "HAS_POLL" symbol, which
2172 indicates to the C program that the poll() routine is available to
2173 poll active file descriptors.
2174 "d_portable"
2176 From d_portable.U:
2177 This variable conditionally defines the "PORTABLE" symbol, which
2179 indicates to the C program that it should not assume that it is
2180 running on the machine it was compiled on.
2181 "d_PRId64"
2183 From quadfio.U:
2184 This variable conditionally defines the PERL_PRId64 symbol, which
2186 indiciates that stdio has a symbol to print 64-bit decimal numbers.
2187 "d_PRIeldbl"
2189 From longdblfio.U:
2190 This variable conditionally defines the PERL_PRIfldbl symbol, which
2192 indiciates that stdio has a symbol to print long doubles.
2193 "d_PRIEUldbl"
2195 From longdblfio.U:
2196 This variable conditionally defines the PERL_PRIfldbl symbol, which
2198 indiciates that stdio has a symbol to print long doubles. The "U"
2199 in the name is to separate this from d_PRIeldbl so that even case-
2200 blind systems can see the difference.
2201 "d_PRIfldbl"
2203 From longdblfio.U:
2204 This variable conditionally defines the PERL_PRIfldbl symbol, which
2206 indiciates that stdio has a symbol to print long doubles.
2207 "d_PRIFUldbl"
2209 From longdblfio.U:
2210 This variable conditionally defines the PERL_PRIfldbl symbol, which
2212 indiciates that stdio has a symbol to print long doubles. The "U"
2213 in the name is to separate this from d_PRIfldbl so that even case-
2214 blind systems can see the difference.
2215 "d_PRIgldbl"
2217 From longdblfio.U:
2218 This variable conditionally defines the PERL_PRIfldbl symbol, which
2220 indiciates that stdio has a symbol to print long doubles.
2221 "d_PRIGUldbl"
2223 From longdblfio.U:
2224 This variable conditionally defines the PERL_PRIfldbl symbol, which
2226 indiciates that stdio has a symbol to print long doubles. The "U"
2227 in the name is to separate this from d_PRIgldbl so that even case-
2228 blind systems can see the difference.
2229 "d_PRIi64"
2231 From quadfio.U:
2232 This variable conditionally defines the PERL_PRIi64 symbol, which
2234 indiciates that stdio has a symbol to print 64-bit decimal numbers.
2235 "d_PRIo64"
2237 From quadfio.U:
2238 This variable conditionally defines the PERL_PRIo64 symbol, which
2240 indiciates that stdio has a symbol to print 64-bit octal numbers.
2241 "d_PRIu64"
2243 From quadfio.U:
2244 This variable conditionally defines the PERL_PRIu64 symbol, which
2246 indiciates that stdio has a symbol to print 64-bit unsigned decimal
2247 numbers.
2248 "d_PRIx64"
2250 From quadfio.U:
2251 This variable conditionally defines the PERL_PRIx64 symbol, which
2253 indiciates that stdio has a symbol to print 64-bit hexadecimal num‐
2254 bers.
2255 "d_PRIXU64"
2257 From quadfio.U:
2258 This variable conditionally defines the PERL_PRIXU64 symbol, which
2260 indiciates that stdio has a symbol to print 64-bit hExADECimAl num‐
2261 bers. The "U" in the name is to separate this from d_PRIx64 so
2262 that even case-blind systems can see the difference.
2263 "d_procselfexe"
2265 From d_procselfexe.U:
2266 Defined if $procselfexe is symlink to the absolute pathname of the
2268 executing program.
2269 "d_pthread_atfork"
2271 From d_pthread_atfork.U:
2272 This variable conditionally defines the "HAS_PTHREAD_ATFORK" sym‐
2274 bol, which indicates to the C program that the pthread_atfork()
2275 routine is available.
2276 "d_pthread_attr_setscope"
2278 From d_pthread_attr_ss.U:
2279 This variable conditionally defines "HAS_PTHREAD_ATTR_SETSCOPE" if
2281 pthread_attr_setscope() is available to set the contention scope
2282 attribute of a thread attribute object.
2283 "d_pthread_yield"
2285 From d_pthread_y.U:
2286 This variable conditionally defines the "HAS_PTHREAD_YIELD" symbol
2288 if the pthread_yield routine is available to yield the execution of
2289 the current thread.
2290 "d_pwage"
2292 From i_pwd.U:
2293 This variable conditionally defines "PWAGE", which indicates that
2295 struct passwd contains pw_age.
2296 "d_pwchange"
2298 From i_pwd.U:
2299 This variable conditionally defines "PWCHANGE", which indicates
2301 that struct passwd contains pw_change.
2302 "d_pwclass"
2304 From i_pwd.U:
2305 This variable conditionally defines "PWCLASS", which indicates that
2307 struct passwd contains pw_class.
2308 "d_pwcomment"
2310 From i_pwd.U:
2311 This variable conditionally defines "PWCOMMENT", which indicates
2313 that struct passwd contains pw_comment.
2314 "d_pwexpire"
2316 From i_pwd.U:
2317 This variable conditionally defines "PWEXPIRE", which indicates
2319 that struct passwd contains pw_expire.
2320 "d_pwgecos"
2322 From i_pwd.U:
2323 This variable conditionally defines "PWGECOS", which indicates that
2325 struct passwd contains pw_gecos.
2326 "d_pwpasswd"
2328 From i_pwd.U:
2329 This variable conditionally defines "PWPASSWD", which indicates
2331 that struct passwd contains pw_passwd.
2332 "d_pwquota"
2334 From i_pwd.U:
2335 This variable conditionally defines "PWQUOTA", which indicates that
2337 struct passwd contains pw_quota.
2338 "d_qgcvt"
2340 From d_qgcvt.U:
2341 This variable conditionally defines the "HAS_QGCVT" symbol, which
2343 indicates to the C program that the qgcvt() routine is available.
2344 "d_quad"
2346 From quadtype.U:
2347 This variable, if defined, tells that there's a 64-bit integer
2349 type, quadtype.
2350 "d_random_r"
2352 From d_random_r.U:
2353 This variable conditionally defines the "HAS_RANDOM_R" symbol,
2355 which indicates to the C program that the random_r() routine is
2356 available.
2357 "d_readdir64_r"
2359 From d_readdir64_r.U:
2360 This variable conditionally defines the HAS_READDIR64_R symbol,
2362 which indicates to the C program that the readdir64_r() routine is
2363 available.
2364 "d_readdir"
2366 From d_readdir.U:
2367 This variable conditionally defines "HAS_READDIR" if readdir() is
2369 available to read directory entries.
2370 "d_readdir_r"
2372 From d_readdir_r.U:
2373 This variable conditionally defines the "HAS_READDIR_R" symbol,
2375 which indicates to the C program that the readdir_r() routine is
2376 available.
2377 "d_readlink"
2379 From d_readlink.U:
2380 This variable conditionally defines the "HAS_READLINK" symbol,
2382 which indicates to the C program that the readlink() routine is
2383 available to read the value of a symbolic link.
2384 "d_readv"
2386 From d_readv.U:
2387 This variable conditionally defines the "HAS_READV" symbol, which
2389 indicates to the C program that the readv() routine is available.
2390 "d_recvmsg"
2392 From d_recvmsg.U:
2393 This variable conditionally defines the "HAS_RECVMSG" symbol, which
2395 indicates to the C program that the recvmsg() routine is available.
2396 "d_rename"
2398 From d_rename.U:
2399 This variable conditionally defines the "HAS_RENAME" symbol, which
2401 indicates to the C program that the rename() routine is available
2402 to rename files.
2403 "d_rewinddir"
2405 From d_readdir.U:
2406 This variable conditionally defines "HAS_REWINDDIR" if rewinddir()
2408 is available.
2409 "d_rmdir"
2411 From d_rmdir.U:
2412 This variable conditionally defines "HAS_RMDIR" if rmdir() is
2414 available to remove directories.
2415 "d_safebcpy"
2417 From d_safebcpy.U:
2418 This variable conditionally defines the "HAS_SAFE_BCOPY" symbol if
2420 the bcopy() routine can do overlapping copies. Normally, you
2421 should probably use memmove().
2422 "d_safemcpy"
2424 From d_safemcpy.U:
2425 This variable conditionally defines the "HAS_SAFE_MEMCPY" symbol if
2427 the memcpy() routine can do overlapping copies. For overlapping
2428 copies, memmove() should be used, if available.
2429 "d_sanemcmp"
2431 From d_sanemcmp.U:
2432 This variable conditionally defines the "HAS_SANE_MEMCMP" symbol if
2434 the memcpy() routine is available and can be used to compare rela‐
2435 tive magnitudes of chars with their high bits set.
2436 "d_sbrkproto"
2438 From d_sbrkproto.U:
2439 This variable conditionally defines the "HAS_SBRK_PROTO" symbol,
2441 which indicates to the C program that the system provides a proto‐
2442 type for the sbrk() function. Otherwise, it is up to the program
2443 to supply one.
2444 "d_scalbnl"
2446 From d_scalbnl.U:
2447 This variable conditionally defines the "HAS_SCALBNL" symbol, which
2449 indicates to the C program that the scalbnl() routine is available.
2450 If ilogbl is also present we can emulate frexpl.
2451 "d_sched_yield"
2453 From d_pthread_y.U:
2454 This variable conditionally defines the "HAS_SCHED_YIELD" symbol if
2456 the sched_yield routine is available to yield the execution of the
2457 current thread.
2458 "d_scm_rights"
2460 From d_socket.U:
2461 This variable conditionally defines the "HAS_SCM_RIGHTS" symbol,
2463 which indicates that the "SCM_RIGHTS" is available. #ifdef is not
2464 enough because it may be an enum, glibc has been known to do this.
2465 "d_SCNfldbl"
2467 From longdblfio.U:
2468 This variable conditionally defines the PERL_PRIfldbl symbol, which
2470 indiciates that stdio has a symbol to scan long doubles.
2471 "d_seekdir"
2473 From d_readdir.U:
2474 This variable conditionally defines "HAS_SEEKDIR" if seekdir() is
2476 available.
2477 "d_select"
2479 From d_select.U:
2480 This variable conditionally defines "HAS_SELECT" if select() is
2482 available to select active file descriptors. A <sys/time.h> inclu‐
2483 sion may be necessary for the timeout field.
2484 "d_sem"
2486 From d_sem.U:
2487 This variable conditionally defines the "HAS_SEM" symbol, which
2489 indicates that the entire sem*(2) library is present.
2490 "d_semctl"
2492 From d_semctl.U:
2493 This variable conditionally defines the "HAS_SEMCTL" symbol, which
2495 indicates to the C program that the semctl() routine is available.
2496 "d_semctl_semid_ds"
2498 From d_union_semun.U:
2499 This variable conditionally defines "USE_SEMCTL_SEMID_DS", which
2501 indicates that struct semid_ds * is to be used for semctl
2502 "IPC_STAT".
2503 "d_semctl_semun"
2505 From d_union_semun.U:
2506 This variable conditionally defines "USE_SEMCTL_SEMUN", which indi‐
2508 cates that union semun is to be used for semctl "IPC_STAT".
2509 "d_semget"
2511 From d_semget.U:
2512 This variable conditionally defines the "HAS_SEMGET" symbol, which
2514 indicates to the C program that the semget() routine is available.
2515 "d_semop"
2517 From d_semop.U:
2518 This variable conditionally defines the "HAS_SEMOP" symbol, which
2520 indicates to the C program that the semop() routine is available.
2521 "d_sendmsg"
2523 From d_sendmsg.U:
2524 This variable conditionally defines the "HAS_SENDMSG" symbol, which
2526 indicates to the C program that the sendmsg() routine is available.
2527 "d_setegid"
2529 From d_setegid.U:
2530 This variable conditionally defines the "HAS_SETEGID" symbol, which
2532 indicates to the C program that the setegid() routine is available
2533 to change the effective gid of the current program.
2534 "d_seteuid"
2536 From d_seteuid.U:
2537 This variable conditionally defines the "HAS_SETEUID" symbol, which
2539 indicates to the C program that the seteuid() routine is available
2540 to change the effective uid of the current program.
2541 "d_setgrent"
2543 From d_setgrent.U:
2544 This variable conditionally defines the "HAS_SETGRENT" symbol,
2546 which indicates to the C program that the setgrent() routine is
2547 available for initializing sequential access to the group database.
2548 "d_setgrent_r"
2550 From d_setgrent_r.U:
2551 This variable conditionally defines the "HAS_SETGRENT_R" symbol,
2553 which indicates to the C program that the setgrent_r() routine is
2554 available.
2555 "d_setgrps"
2557 From d_setgrps.U:
2558 This variable conditionally defines the "HAS_SETGROUPS" symbol,
2560 which indicates to the C program that the setgroups() routine is
2561 available to set the list of process groups.
2562 "d_sethent"
2564 From d_sethent.U:
2565 This variable conditionally defines "HAS_SETHOSTENT" if sethos‐
2567 tent() is available.
2568 "d_sethostent_r"
2570 From d_sethostent_r.U:
2571 This variable conditionally defines the "HAS_SETHOSTENT_R" symbol,
2573 which indicates to the C program that the sethostent_r() routine is
2574 available.
2575 "d_setitimer"
2577 From d_setitimer.U:
2578 This variable conditionally defines the "HAS_SETITIMER" symbol,
2580 which indicates to the C program that the setitimer() routine is
2581 available.
2582 "d_setlinebuf"
2584 From d_setlnbuf.U:
2585 This variable conditionally defines the "HAS_SETLINEBUF" symbol,
2587 which indicates to the C program that the setlinebuf() routine is
2588 available to change stderr or stdout from block-buffered or
2589 unbuffered to a line-buffered mode.
2590 "d_setlocale"
2592 From d_setlocale.U:
2593 This variable conditionally defines "HAS_SETLOCALE" if setlocale()
2595 is available to handle locale-specific ctype implementations.
2596 "d_setlocale_r"
2598 From d_setlocale_r.U:
2599 This variable conditionally defines the "HAS_SETLOCALE_R" symbol,
2601 which indicates to the C program that the setlocale_r() routine is
2602 available.
2603 "d_setnent"
2605 From d_setnent.U:
2606 This variable conditionally defines "HAS_SETNETENT" if setnetent()
2608 is available.
2609 "d_setnetent_r"
2611 From d_setnetent_r.U:
2612 This variable conditionally defines the "HAS_SETNETENT_R" symbol,
2614 which indicates to the C program that the setnetent_r() routine is
2615 available.
2616 "d_setpent"
2618 From d_setpent.U:
2619 This variable conditionally defines "HAS_SETPROTOENT" if setpro‐
2621 toent() is available.
2622 "d_setpgid"
2624 From d_setpgid.U:
2625 This variable conditionally defines the "HAS_SETPGID" symbol if the
2627 setpgid(pid, gpid) function is available to set process group "ID".
2628 "d_setpgrp2"
2630 From d_setpgrp2.U:
2631 This variable conditionally defines the HAS_SETPGRP2 symbol, which
2633 indicates to the C program that the setpgrp2() (as in DG/"UX") rou‐
2634 tine is available to set the current process group.
2635 "d_setpgrp"
2637 From d_setpgrp.U:
2638 This variable conditionally defines "HAS_SETPGRP" if setpgrp() is
2640 available to set the current process group.
2641 "d_setprior"
2643 From d_setprior.U:
2644 This variable conditionally defines "HAS_SETPRIORITY" if setprior‐
2646 ity() is available to set a process's priority.
2647 "d_setproctitle"
2649 From d_setproctitle.U:
2650 This variable conditionally defines the "HAS_SETPROCTITLE" symbol,
2652 which indicates to the C program that the setproctitle() routine is
2653 available.
2654 "d_setprotoent_r"
2656 From d_setprotoent_r.U:
2657 This variable conditionally defines the "HAS_SETPROTOENT_R" symbol,
2659 which indicates to the C program that the setprotoent_r() routine
2660 is available.
2661 "d_setpwent"
2663 From d_setpwent.U:
2664 This variable conditionally defines the "HAS_SETPWENT" symbol,
2666 which indicates to the C program that the setpwent() routine is
2667 available for initializing sequential access to the passwd data‐
2668 base.
2669 "d_setpwent_r"
2671 From d_setpwent_r.U:
2672 This variable conditionally defines the "HAS_SETPWENT_R" symbol,
2674 which indicates to the C program that the setpwent_r() routine is
2675 available.
2676 "d_setregid"
2678 From d_setregid.U:
2679 This variable conditionally defines "HAS_SETREGID" if setregid() is
2681 available to change the real and effective gid of the current
2682 process.
2683 "d_setresgid"
2685 From d_setregid.U:
2686 This variable conditionally defines "HAS_SETRESGID" if setresgid()
2688 is available to change the real, effective and saved gid of the
2689 current process.
2690 "d_setresuid"
2692 From d_setreuid.U:
2693 This variable conditionally defines "HAS_SETREUID" if setresuid()
2695 is available to change the real, effective and saved uid of the
2696 current process.
2697 "d_setreuid"
2699 From d_setreuid.U:
2700 This variable conditionally defines "HAS_SETREUID" if setreuid() is
2702 available to change the real and effective uid of the current
2703 process.
2704 "d_setrgid"
2706 From d_setrgid.U:
2707 This variable conditionally defines the "HAS_SETRGID" symbol, which
2709 indicates to the C program that the setrgid() routine is available
2710 to change the real gid of the current program.
2711 "d_setruid"
2713 From d_setruid.U:
2714 This variable conditionally defines the "HAS_SETRUID" symbol, which
2716 indicates to the C program that the setruid() routine is available
2717 to change the real uid of the current program.
2718 "d_setsent"
2720 From d_setsent.U:
2721 This variable conditionally defines "HAS_SETSERVENT" if setser‐
2723 vent() is available.
2724 "d_setservent_r"
2726 From d_setservent_r.U:
2727 This variable conditionally defines the "HAS_SETSERVENT_R" symbol,
2729 which indicates to the C program that the setservent_r() routine is
2730 available.
2731 "d_setsid"
2733 From d_setsid.U:
2734 This variable conditionally defines "HAS_SETSID" if setsid() is
2736 available to set the process group "ID".
2737 "d_setvbuf"
2739 From d_setvbuf.U:
2740 This variable conditionally defines the "HAS_SETVBUF" symbol, which
2742 indicates to the C program that the setvbuf() routine is available
2743 to change buffering on an open stdio stream.
2744 "d_sfio"
2746 From d_sfio.U:
2747 This variable conditionally defines the "USE_SFIO" symbol, and
2749 indicates whether sfio is available (and should be used).
2750 "d_shm"
2752 From d_shm.U:
2753 This variable conditionally defines the "HAS_SHM" symbol, which
2755 indicates that the entire shm*(2) library is present.
2756 "d_shmat"
2758 From d_shmat.U:
2759 This variable conditionally defines the "HAS_SHMAT" symbol, which
2761 indicates to the C program that the shmat() routine is available.
2762 "d_shmatprototype"
2764 From d_shmat.U:
2765 This variable conditionally defines the "HAS_SHMAT_PROTOTYPE" sym‐
2767 bol, which indicates that sys/shm.h has a prototype for shmat.
2768 "d_shmctl"
2770 From d_shmctl.U:
2771 This variable conditionally defines the "HAS_SHMCTL" symbol, which
2773 indicates to the C program that the shmctl() routine is available.
2774 "d_shmdt"
2776 From d_shmdt.U:
2777 This variable conditionally defines the "HAS_SHMDT" symbol, which
2779 indicates to the C program that the shmdt() routine is available.
2780 "d_shmget"
2782 From d_shmget.U:
2783 This variable conditionally defines the "HAS_SHMGET" symbol, which
2785 indicates to the C program that the shmget() routine is available.
2786 "d_sigaction"
2788 From d_sigaction.U:
2789 This variable conditionally defines the "HAS_SIGACTION" symbol,
2791 which indicates that the Vr4 sigaction() routine is available.
2792 "d_sigprocmask"
2794 From d_sigprocmask.U:
2795 This variable conditionally defines "HAS_SIGPROCMASK" if sigproc‐
2797 mask() is available to examine or change the signal mask of the
2798 calling process.
2799 "d_sigsetjmp"
2801 From d_sigsetjmp.U:
2802 This variable conditionally defines the "HAS_SIGSETJMP" symbol,
2804 which indicates that the sigsetjmp() routine is available to call
2805 setjmp() and optionally save the process's signal mask.
2806 "d_sockatmark"
2808 From d_sockatmark.U:
2809 This variable conditionally defines the "HAS_SOCKATMARK" symbol,
2811 which indicates to the C program that the sockatmark() routine is
2812 available.
2813 "d_sockatmarkproto"
2815 From d_sockatmarkproto.U:
2816 This variable conditionally defines the "HAS_SOCKATMARK_PROTO" sym‐
2818 bol, which indicates to the C program that the system provides a
2819 prototype for the sockatmark() function. Otherwise, it is up to
2820 the program to supply one.
2821 "d_socket"
2823 From d_socket.U:
2824 This variable conditionally defines "HAS_SOCKET", which indicates
2826 that the "BSD" socket interface is supported.
2827 "d_socklen_t"
2829 From d_socklen_t.U:
2830 This symbol will be defined if the C compiler supports socklen_t.
2832 "d_sockpair"
2834 From d_socket.U:
2835 This variable conditionally defines the "HAS_SOCKETPAIR" symbol,
2837 which indicates that the "BSD" socketpair() is supported.
2838 "d_socks5_init"
2840 From d_socks5_init.U:
2841 This variable conditionally defines the HAS_SOCKS5_INIT symbol,
2843 which indicates to the C program that the socks5_init() routine is
2844 available.
2845 "d_sprintf_returns_strlen"
2847 From d_sprintf_returns_strlen.U:
2848 This variable defines whether sprintf returns the length of the
2850 string (as per the "ANSI" spec). Some C libraries retain compati‐
2851 bility with pre-"ANSI" C and return a pointer to the passed in buf‐
2852 fer; for these this variable will be undef.
2853 "d_sqrtl"
2855 From d_sqrtl.U:
2856 This variable conditionally defines the "HAS_SQRTL" symbol, which
2858 indicates to the C program that the sqrtl() routine is available.
2859 "d_srand48_r"
2861 From d_srand48_r.U:
2862 This variable conditionally defines the HAS_SRAND48_R symbol, which
2864 indicates to the C program that the srand48_r() routine is avail‐
2865 able.
2866 "d_srandom_r"
2868 From d_srandom_r.U:
2869 This variable conditionally defines the "HAS_SRANDOM_R" symbol,
2871 which indicates to the C program that the srandom_r() routine is
2872 available.
2873 "d_sresgproto"
2875 From d_sresgproto.U:
2876 This variable conditionally defines the "HAS_SETRESGID_PROTO" sym‐
2878 bol, which indicates to the C program that the system provides a
2879 prototype for the setresgid() function. Otherwise, it is up to the
2880 program to supply one.
2881 "d_sresuproto"
2883 From d_sresuproto.U:
2884 This variable conditionally defines the "HAS_SETRESUID_PROTO" sym‐
2886 bol, which indicates to the C program that the system provides a
2887 prototype for the setresuid() function. Otherwise, it is up to the
2888 program to supply one.
2889 "d_statblks"
2891 From d_statblks.U:
2892 This variable conditionally defines "USE_STAT_BLOCKS" if this sys‐
2894 tem has a stat structure declaring st_blksize and st_blocks.
2895 "d_statfs_f_flags"
2897 From d_statfs_f_flags.U:
2898 This variable conditionally defines the "HAS_STRUCT_STATFS_F_FLAGS"
2900 symbol, which indicates to struct statfs from has f_flags member.
2901 This kind of struct statfs is coming from sys/mount.h ("BSD"), not
2902 from sys/statfs.h ("SYSV").
2903 "d_statfs_s"
2905 From d_statfs_s.U:
2906 This variable conditionally defines the "HAS_STRUCT_STATFS" symbol,
2908 which indicates that the struct statfs is supported.
2909 "d_statvfs"
2911 From d_statvfs.U:
2912 This variable conditionally defines the "HAS_STATVFS" symbol, which
2914 indicates to the C program that the statvfs() routine is available.
2915 "d_stdio_cnt_lval"
2917 From d_stdstdio.U:
2918 This variable conditionally defines "STDIO_CNT_LVALUE" if the
2920 "FILE_cnt" macro can be used as an lvalue.
2921 "d_stdio_ptr_lval"
2923 From d_stdstdio.U:
2924 This variable conditionally defines "STDIO_PTR_LVALUE" if the
2926 "FILE_ptr" macro can be used as an lvalue.
2927 "d_stdio_ptr_lval_nochange_cnt"
2929 From d_stdstdio.U:
2930 This symbol is defined if using the "FILE_ptr" macro as an lvalue
2932 to increase the pointer by n leaves File_cnt(fp) unchanged.
2933 "d_stdio_ptr_lval_sets_cnt"
2935 From d_stdstdio.U:
2936 This symbol is defined if using the "FILE_ptr" macro as an lvalue
2938 to increase the pointer by n has the side effect of decreasing the
2939 value of File_cnt(fp) by n.
2940 "d_stdio_stream_array"
2942 From stdio_streams.U:
2943 This variable tells whether there is an array holding the stdio
2945 streams.
2946 "d_stdiobase"
2948 From d_stdstdio.U:
2949 This variable conditionally defines "USE_STDIO_BASE" if this system
2951 has a "FILE" structure declaring a usable _base field (or equiva‐
2952 lent) in stdio.h.
2953 "d_stdstdio"
2955 From d_stdstdio.U:
2956 This variable conditionally defines "USE_STDIO_PTR" if this system
2958 has a "FILE" structure declaring usable _ptr and _cnt fields (or
2959 equivalent) in stdio.h.
2960 "d_strchr"
2962 From d_strchr.U:
2963 This variable conditionally defines "HAS_STRCHR" if strchr() and
2965 strrchr() are available for string searching.
2966 "d_strcoll"
2968 From d_strcoll.U:
2969 This variable conditionally defines "HAS_STRCOLL" if strcoll() is
2971 available to compare strings using collating information.
2972 "d_strctcpy"
2974 From d_strctcpy.U:
2975 This variable conditionally defines the "USE_STRUCT_COPY" symbol,
2977 which indicates to the C program that this C compiler knows how to
2978 copy structures.
2979 "d_strerrm"
2981 From d_strerror.U:
2982 This variable holds what Strerrr is defined as to translate an
2984 error code condition into an error message string. It could be
2985 "strerror" or a more "complex" macro emulating strrror with
2986 sys_errlist[], or the "unknown" string when both strerror and
2987 sys_errlist are missing.
2988 "d_strerror"
2990 From d_strerror.U:
2991 This variable conditionally defines "HAS_STRERROR" if strerror() is
2993 available to translate error numbers to strings.
2994 "d_strerror_r"
2996 From d_strerror_r.U:
2997 This variable conditionally defines the "HAS_STRERROR_R" symbol,
2999 which indicates to the C program that the strerror_r() routine is
3000 available.
3001 "d_strftime"
3003 From d_strftime.U:
3004 This variable conditionally defines the "HAS_STRFTIME" symbol,
3006 which indicates to the C program that the strftime() routine is
3007 available.
3008 "d_strlcat"
3010 From d_strlcat.U:
3011 This variable conditionally defines the "HAS_STRLCAT" symbol, which
3013 indicates to the C program that the strlcat () routine is avail‐
3014 able.
3015 "d_strlcpy"
3017 From d_strlcpy.U:
3018 This variable conditionally defines the "HAS_STRLCPY" symbol, which
3020 indicates to the C program that the strlcpy () routine is avail‐
3021 able.
3022 "d_strtod"
3024 From d_strtod.U:
3025 This variable conditionally defines the "HAS_STRTOD" symbol, which
3027 indicates to the C program that the strtod() routine is available
3028 to provide better numeric string conversion than atof().
3029 "d_strtol"
3031 From d_strtol.U:
3032 This variable conditionally defines the "HAS_STRTOL" symbol, which
3034 indicates to the C program that the strtol() routine is available
3035 to provide better numeric string conversion than atoi() and
3036 friends.
3037 "d_strtold"
3039 From d_strtold.U:
3040 This variable conditionally defines the "HAS_STRTOLD" symbol, which
3042 indicates to the C program that the strtold() routine is available.
3043 "d_strtoll"
3045 From d_strtoll.U:
3046 This variable conditionally defines the "HAS_STRTOLL" symbol, which
3048 indicates to the C program that the strtoll() routine is available.
3049 "d_strtoq"
3051 From d_strtoq.U:
3052 This variable conditionally defines the "HAS_STRTOQ" symbol, which
3054 indicates to the C program that the strtoq() routine is available.
3055 "d_strtoul"
3057 From d_strtoul.U:
3058 This variable conditionally defines the "HAS_STRTOUL" symbol, which
3060 indicates to the C program that the strtoul() routine is available
3061 to provide conversion of strings to unsigned long.
3062 "d_strtoull"
3064 From d_strtoull.U:
3065 This variable conditionally defines the "HAS_STRTOULL" symbol,
3067 which indicates to the C program that the strtoull() routine is
3068 available.
3069 "d_strtouq"
3071 From d_strtouq.U:
3072 This variable conditionally defines the "HAS_STRTOUQ" symbol, which
3074 indicates to the C program that the strtouq() routine is available.
3075 "d_strxfrm"
3077 From d_strxfrm.U:
3078 This variable conditionally defines "HAS_STRXFRM" if strxfrm() is
3080 available to transform strings.
3081 "d_suidsafe"
3083 From d_dosuid.U:
3084 This variable conditionally defines "SETUID_SCRIPTS_ARE_SECURE_NOW"
3086 if setuid scripts can be secure. This test looks in /dev/fd/.
3087 "d_symlink"
3089 From d_symlink.U:
3090 This variable conditionally defines the "HAS_SYMLINK" symbol, which
3092 indicates to the C program that the symlink() routine is available
3093 to create symbolic links.
3094 "d_syscall"
3096 From d_syscall.U:
3097 This variable conditionally defines "HAS_SYSCALL" if syscall() is
3099 available call arbitrary system calls.
3100 "d_syscallproto"
3102 From d_syscallproto.U:
3103 This variable conditionally defines the "HAS_SYSCALL_PROTO" symbol,
3105 which indicates to the C program that the system provides a proto‐
3106 type for the syscall() function. Otherwise, it is up to the pro‐
3107 gram to supply one.
3108 "d_sysconf"
3110 From d_sysconf.U:
3111 This variable conditionally defines the "HAS_SYSCONF" symbol, which
3113 indicates to the C program that the sysconf() routine is available
3114 to determine system related limits and options.
3115 "d_sysernlst"
3117 From d_strerror.U:
3118 This variable conditionally defines "HAS_SYS_ERRNOLIST" if
3120 sys_errnolist[] is available to translate error numbers to the sym‐
3121 bolic name.
3122 "d_syserrlst"
3124 From d_strerror.U:
3125 This variable conditionally defines "HAS_SYS_ERRLIST" if
3127 sys_errlist[] is available to translate error numbers to strings.
3128 "d_system"
3130 From d_system.U:
3131 This variable conditionally defines "HAS_SYSTEM" if system() is
3133 available to issue a shell command.
3134 "d_tcgetpgrp"
3136 From d_tcgtpgrp.U:
3137 This variable conditionally defines the "HAS_TCGETPGRP" symbol,
3139 which indicates to the C program that the tcgetpgrp() routine is
3140 available. to get foreground process group "ID".
3141 "d_tcsetpgrp"
3143 From d_tcstpgrp.U:
3144 This variable conditionally defines the "HAS_TCSETPGRP" symbol,
3146 which indicates to the C program that the tcsetpgrp() routine is
3147 available to set foreground process group "ID".
3148 "d_telldir"
3150 From d_readdir.U:
3151 This variable conditionally defines "HAS_TELLDIR" if telldir() is
3153 available.
3154 "d_telldirproto"
3156 From d_telldirproto.U:
3157 This variable conditionally defines the "HAS_TELLDIR_PROTO" symbol,
3159 which indicates to the C program that the system provides a proto‐
3160 type for the telldir() function. Otherwise, it is up to the pro‐
3161 gram to supply one.
3162 "d_time"
3164 From d_time.U:
3165 This variable conditionally defines the "HAS_TIME" symbol, which
3167 indicates that the time() routine exists. The time() routine is
3168 normaly provided on "UNIX" systems.
3169 "d_times"
3171 From d_times.U:
3172 This variable conditionally defines the "HAS_TIMES" symbol, which
3174 indicates that the times() routine exists. The times() routine is
3175 normaly provided on "UNIX" systems. You may have to include
3176 <sys/times.h>.
3177 "d_tm_tm_gmtoff"
3179 From i_time.U:
3180 This variable conditionally defines "HAS_TM_TM_GMTOFF", which indi‐
3182 cates indicates to the C program that the struct tm has the
3183 tm_gmtoff field.
3184 "d_tm_tm_zone"
3186 From i_time.U:
3187 This variable conditionally defines "HAS_TM_TM_ZONE", which indi‐
3189 cates indicates to the C program that the struct tm has the tm_zone
3190 field.
3191 "d_tmpnam_r"
3193 From d_tmpnam_r.U:
3194 This variable conditionally defines the "HAS_TMPNAM_R" symbol,
3196 which indicates to the C program that the tmpnam_r() routine is
3197 available.
3198 "d_truncate"
3200 From d_truncate.U:
3201 This variable conditionally defines "HAS_TRUNCATE" if truncate() is
3203 available to truncate files.
3204 "d_ttyname_r"
3206 From d_ttyname_r.U:
3207 This variable conditionally defines the "HAS_TTYNAME_R" symbol,
3209 which indicates to the C program that the ttyname_r() routine is
3210 available.
3211 "d_tzname"
3213 From d_tzname.U:
3214 This variable conditionally defines "HAS_TZNAME" if tzname[] is
3216 available to access timezone names.
3217 "d_u32align"
3219 From d_u32align.U:
3220 This variable tells whether you must access character data through
3222 U32-aligned pointers.
3223 "d_ualarm"
3225 From d_ualarm.U:
3226 This variable conditionally defines the "HAS_UALARM" symbol, which
3228 indicates to the C program that the ualarm() routine is available.
3229 "d_umask"
3231 From d_umask.U:
3232 This variable conditionally defines the "HAS_UMASK" symbol, which
3234 indicates to the C program that the umask() routine is available.
3235 to set and get the value of the file creation mask.
3236 "d_uname"
3238 From d_gethname.U:
3239 This variable conditionally defines the "HAS_UNAME" symbol, which
3241 indicates to the C program that the uname() routine may be used to
3242 derive the host name.
3243 "d_union_semun"
3245 From d_union_semun.U:
3246 This variable conditionally defines "HAS_UNION_SEMUN" if the union
3248 semun is defined by including <sys/sem.h>.
3249 "d_unordered"
3251 From d_unordered.U:
3252 This variable conditionally defines the "HAS_UNORDERED" symbol,
3254 which indicates to the C program that the unordered() routine is
3255 available.
3256 "d_unsetenv"
3258 From d_unsetenv.U:
3259 This variable conditionally defines the "HAS_UNSETENV" symbol,
3261 which indicates to the C program that the unsetenv () routine is
3262 available.
3263 "d_usleep"
3265 From d_usleep.U:
3266 This variable conditionally defines "HAS_USLEEP" if usleep() is
3268 available to do high granularity sleeps.
3269 "d_usleepproto"
3271 From d_usleepproto.U:
3272 This variable conditionally defines the "HAS_USLEEP_PROTO" symbol,
3274 which indicates to the C program that the system provides a proto‐
3275 type for the usleep() function. Otherwise, it is up to the program
3276 to supply one.
3277 "d_ustat"
3279 From d_ustat.U:
3280 This variable conditionally defines "HAS_USTAT" if ustat() is
3282 available to query file system statistics by dev_t.
3283 "d_vendorarch"
3285 From vendorarch.U:
3286 This variable conditionally defined "PERL_VENDORARCH".
3288 "d_vendorbin"
3290 From vendorbin.U:
3291 This variable conditionally defines "PERL_VENDORBIN".
3293 "d_vendorlib"
3295 From vendorlib.U:
3296 This variable conditionally defines "PERL_VENDORLIB".
3298 "d_vendorscript"
3300 From vendorscript.U:
3301 This variable conditionally defines "PERL_VENDORSCRIPT".
3303 "d_vfork"
3305 From d_vfork.U:
3306 This variable conditionally defines the "HAS_VFORK" symbol, which
3308 indicates the vfork() routine is available.
3309 "d_void_closedir"
3311 From d_closedir.U:
3312 This variable conditionally defines "VOID_CLOSEDIR" if closedir()
3314 does not return a value.
3315 "d_voidsig"
3317 From d_voidsig.U:
3318 This variable conditionally defines "VOIDSIG" if this system
3320 declares "void (*signal(...))()" in signal.h. The old way was to
3321 declare it as "int (*signal(...))()".
3322 "d_voidtty"
3324 From i_sysioctl.U:
3325 This variable conditionally defines "USE_IOCNOTTY" to indicate that
3327 the ioctl() call with "TIOCNOTTY" should be used to void tty asso‐
3328 ciation. Otherwise (on "USG" probably), it is enough to close the
3329 standard file decriptors and do a setpgrp().
3330 "d_volatile"
3332 From d_volatile.U:
3333 This variable conditionally defines the "HASVOLATILE" symbol, which
3335 indicates to the C program that this C compiler knows about the
3336 volatile declaration.
3337 "d_vprintf"
3339 From d_vprintf.U:
3340 This variable conditionally defines the "HAS_VPRINTF" symbol, which
3342 indicates to the C program that the vprintf() routine is available
3343 to printf with a pointer to an argument list.
3344 "d_wait4"
3346 From d_wait4.U:
3347 This variable conditionally defines the HAS_WAIT4 symbol, which
3349 indicates the wait4() routine is available.
3350 "d_waitpid"
3352 From d_waitpid.U:
3353 This variable conditionally defines "HAS_WAITPID" if waitpid() is
3355 available to wait for child process.
3356 "d_wcstombs"
3358 From d_wcstombs.U:
3359 This variable conditionally defines the "HAS_WCSTOMBS" symbol,
3361 which indicates to the C program that the wcstombs() routine is
3362 available to convert wide character strings to multibyte strings.
3363 "d_wctomb"
3365 From d_wctomb.U:
3366 This variable conditionally defines the "HAS_WCTOMB" symbol, which
3368 indicates to the C program that the wctomb() routine is available
3369 to convert a wide character to a multibyte.
3370 "d_writev"
3372 From d_writev.U:
3373 This variable conditionally defines the "HAS_WRITEV" symbol, which
3375 indicates to the C program that the writev() routine is available.
3376 "d_xenix"
3378 From Guess.U:
3379 This variable conditionally defines the symbol "XENIX", which
3381 alerts the C program that it runs under Xenix.
3382 "date"
3384 From Loc.U:
3385 This variable is used internally by Configure to determine the full
3387 pathname (if any) of the date program. After Configure runs, the
3388 value is reset to a plain "date" and is not useful.
3389 "db_hashtype"
3391 From i_db.U:
3392 This variable contains the type of the hash structure element in
3394 the <db.h> header file. In older versions of "DB", it was int,
3395 while in newer ones it is u_int32_t.
3396 "db_prefixtype"
3398 From i_db.U:
3399 This variable contains the type of the prefix structure element in
3401 the <db.h> header file. In older versions of "DB", it was int,
3402 while in newer ones it is size_t.
3403 "db_version_major"
3405 From i_db.U:
3406 This variable contains the major version number of Berkeley "DB"
3408 found in the <db.h> header file.
3409 "db_version_minor"
3411 From i_db.U:
3412 This variable contains the minor version number of Berkeley "DB"
3414 found in the <db.h> header file. For "DB" version 1 this is always
3415 0.
3416 "db_version_patch"
3418 From i_db.U:
3419 This variable contains the patch version number of Berkeley "DB"
3421 found in the <db.h> header file. For "DB" version 1 this is always
3422 0.
3423 "defvoidused"
3425 From voidflags.U:
3426 This variable contains the default value of the "VOIDUSED" symbol
3428 (15).
3429 "direntrytype"
3431 From i_dirent.U:
3432 This symbol is set to "struct direct" or "struct dirent" depending
3434 on whether dirent is available or not. You should use this pseudo
3435 type to portably declare your directory entries.
3436 "dlext"
3438 From dlext.U:
3439 This variable contains the extension that is to be used for the
3441 dynamically loaded modules that perl generaties.
3442 "dlsrc"
3444 From dlsrc.U:
3445 This variable contains the name of the dynamic loading file that
3447 will be used with the package.
3448 "doublesize"
3450 From doublesize.U:
3451 This variable contains the value of the "DOUBLESIZE" symbol, which
3453 indicates to the C program how many bytes there are in a double.
3454 "drand01"
3456 From randfunc.U:
3457 Indicates the macro to be used to generate normalized random num‐
3459 bers. Uses randfunc, often divided by (double) (((unsigned long) 1
3460 << randbits)) in order to normalize the result. In C programs, the
3461 macro "Drand01" is mapped to drand01.
3462 "drand48_r_proto"
3464 From d_drand48_r.U:
3465 This variable encodes the prototype of drand48_r. It is zero if
3467 d_drand48_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
3468 of reentr.h if d_drand48_r is defined.
3469 "dynamic_ext"
3471 From Extensions.U:
3472 This variable holds a list of "XS" extension files we want to link
3474 dynamically into the package. It is used by Makefile.
3475 e
3477 "eagain"
3479 From nblock_io.U:
3480 This variable bears the symbolic errno code set by read() when no
3482 data is present on the file and non-blocking I/O was enabled (oth‐
3483 erwise, read() blocks naturally).
3484 "ebcdic"
3486 From ebcdic.U:
3487 This variable conditionally defines "EBCDIC" if this system uses
3489 "EBCDIC" encoding. Among other things, this means that the charac‐
3490 ter ranges are not contiguous. See trnl.U
3491 "echo"
3493 From Loc.U:
3494 This variable is used internally by Configure to determine the full
3496 pathname (if any) of the echo program. After Configure runs, the
3497 value is reset to a plain "echo" and is not useful.
3498 "egrep"
3500 From Loc.U:
3501 This variable is used internally by Configure to determine the full
3503 pathname (if any) of the egrep program. After Configure runs, the
3504 value is reset to a plain "egrep" and is not useful.
3505 "emacs"
3507 From Loc.U:
3508 This variable is defined but not used by Configure. The value is a
3510 plain '' and is not useful.
3511 "endgrent_r_proto"
3513 From d_endgrent_r.U:
3514 This variable encodes the prototype of endgrent_r. It is zero if
3516 d_endgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3517 macros of reentr.h if d_endgrent_r is defined.
3518 "endhostent_r_proto"
3520 From d_endhostent_r.U:
3521 This variable encodes the prototype of endhostent_r. It is zero if
3523 d_endhostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3524 macros of reentr.h if d_endhostent_r is defined.
3525 "endnetent_r_proto"
3527 From d_endnetent_r.U:
3528 This variable encodes the prototype of endnetent_r. It is zero if
3530 d_endnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3531 macros of reentr.h if d_endnetent_r is defined.
3532 "endprotoent_r_proto"
3534 From d_endprotoent_r.U:
3535 This variable encodes the prototype of endprotoent_r. It is zero
3537 if d_endprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3538 macros of reentr.h if d_endprotoent_r is defined.
3539 "endpwent_r_proto"
3541 From d_endpwent_r.U:
3542 This variable encodes the prototype of endpwent_r. It is zero if
3544 d_endpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3545 macros of reentr.h if d_endpwent_r is defined.
3546 "endservent_r_proto"
3548 From d_endservent_r.U:
3549 This variable encodes the prototype of endservent_r. It is zero if
3551 d_endservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3552 macros of reentr.h if d_endservent_r is defined.
3553 "eunicefix"
3555 From Init.U:
3556 When running under Eunice this variable contains a command which
3558 will convert a shell script to the proper form of text file for it
3559 to be executable by the shell. On other systems it is a no-op.
3560 "exe_ext"
3562 From Unix.U:
3563 This is an old synonym for _exe.
3565 "expr"
3567 From Loc.U:
3568 This variable is used internally by Configure to determine the full
3570 pathname (if any) of the expr program. After Configure runs, the
3571 value is reset to a plain "expr" and is not useful.
3572 "extensions"
3574 From Extensions.U:
3575 This variable holds a list of all extension files (both "XS" and
3577 non-xs linked into the package. It is propagated to Config.pm and
3578 is typically used to test whether a particular extesion is avail‐
3579 able.
3580 "extras"
3582 From Extras.U:
3583 This variable holds a list of extra modules to install.
3585 f
3587 "fflushall"
3589 From fflushall.U:
3590 This symbol, if defined, tells that to flush all pending stdio out‐
3592 put one must loop through all the stdio file handles stored in an
3593 array and fflush them. Note that if fflushNULL is defined,
3594 fflushall will not even be probed for and will be left undefined.
3595 "fflushNULL"
3597 From fflushall.U:
3598 This symbol, if defined, tells that fflush("NULL") does flush all
3600 pending stdio output.
3601 "find"
3603 From Loc.U:
3604 This variable is defined but not used by Configure. The value is a
3606 plain '' and is not useful.
3607 "firstmakefile"
3609 From Unix.U:
3610 This variable defines the first file searched by make. On unix, it
3612 is makefile (then Makefile). On case-insensitive systems, it might
3613 be something else. This is only used to deal with convoluted make
3614 depend tricks.
3615 "flex"
3617 From Loc.U:
3618 This variable is defined but not used by Configure. The value is a
3620 plain '' and is not useful.
3621 "fpossize"
3623 From fpossize.U:
3624 This variable contains the size of a fpostype in bytes.
3626 "fpostype"
3628 From fpostype.U:
3629 This variable defines Fpos_t to be something like fpos_t, long,
3631 uint, or whatever type is used to declare file positions in libc.
3632 "freetype"
3634 From mallocsrc.U:
3635 This variable contains the return type of free(). It is usually
3637 void, but occasionally int.
3638 "from"
3640 From Cross.U:
3641 This variable contains the command used by Configure to copy files
3643 from the target host. Useful and available only during Perl build.
3644 The string ":" if not cross-compiling.
3645 "full_ar"
3647 From Loc_ar.U:
3648 This variable contains the full pathname to "ar", whether or not
3650 the user has specified "portability". This is only used in the
3651 Makefile.SH.
3652 "full_csh"
3654 From d_csh.U:
3655 This variable contains the full pathname to "csh", whether or not
3657 the user has specified "portability". This is only used in the
3658 compiled C program, and we assume that all systems which can share
3659 this executable will have the same full pathname to csh.
3660 "full_sed"
3662 From Loc_sed.U:
3663 This variable contains the full pathname to "sed", whether or not
3665 the user has specified "portability". This is only used in the
3666 compiled C program, and we assume that all systems which can share
3667 this executable will have the same full pathname to sed.
3668 g
3670 "gccansipedantic"
3672 From gccvers.U:
3673 If "GNU" cc (gcc) is used, this variable will enable (if set) the
3675 -ansi and -pedantic ccflags for building core files (through cflags
3676 script). (See Porting/pumpkin.pod for full description).
3677 "gccosandvers"
3679 From gccvers.U:
3680 If "GNU" cc (gcc) is used, this variable holds the operating system
3682 and version used to compile gcc. It is set to '' if not gcc, or if
3683 nothing useful can be parsed as the os version.
3684 "gccversion"
3686 From gccvers.U:
3687 If "GNU" cc (gcc) is used, this variable holds 1 or 2 to indicate
3689 whether the compiler is version 1 or 2. This is used in setting
3690 some of the default cflags. It is set to '' if not gcc.
3691 "getgrent_r_proto"
3693 From d_getgrent_r.U:
3694 This variable encodes the prototype of getgrent_r. It is zero if
3696 d_getgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3697 macros of reentr.h if d_getgrent_r is defined.
3698 "getgrgid_r_proto"
3700 From d_getgrgid_r.U:
3701 This variable encodes the prototype of getgrgid_r. It is zero if
3703 d_getgrgid_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3704 macros of reentr.h if d_getgrgid_r is defined.
3705 "getgrnam_r_proto"
3707 From d_getgrnam_r.U:
3708 This variable encodes the prototype of getgrnam_r. It is zero if
3710 d_getgrnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3711 macros of reentr.h if d_getgrnam_r is defined.
3712 "gethostbyaddr_r_proto"
3714 From d_gethostbyaddr_r.U:
3715 This variable encodes the prototype of gethostbyaddr_r. It is zero
3717 if d_gethostbyaddr_r is undef, and one of the "REEN‐
3718 TRANT_PROTO_T_ABC" macros of reentr.h if d_gethostbyaddr_r is
3719 defined.
3720 "gethostbyname_r_proto"
3722 From d_gethostbyname_r.U:
3723 This variable encodes the prototype of gethostbyname_r. It is zero
3725 if d_gethostbyname_r is undef, and one of the "REEN‐
3726 TRANT_PROTO_T_ABC" macros of reentr.h if d_gethostbyname_r is
3727 defined.
3728 "gethostent_r_proto"
3730 From d_gethostent_r.U:
3731 This variable encodes the prototype of gethostent_r. It is zero if
3733 d_gethostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3734 macros of reentr.h if d_gethostent_r is defined.
3735 "getlogin_r_proto"
3737 From d_getlogin_r.U:
3738 This variable encodes the prototype of getlogin_r. It is zero if
3740 d_getlogin_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3741 macros of reentr.h if d_getlogin_r is defined.
3742 "getnetbyaddr_r_proto"
3744 From d_getnetbyaddr_r.U:
3745 This variable encodes the prototype of getnetbyaddr_r. It is zero
3747 if d_getnetbyaddr_r is undef, and one of the "REEN‐
3748 TRANT_PROTO_T_ABC" macros of reentr.h if d_getnetbyaddr_r is
3749 defined.
3750 "getnetbyname_r_proto"
3752 From d_getnetbyname_r.U:
3753 This variable encodes the prototype of getnetbyname_r. It is zero
3755 if d_getnetbyname_r is undef, and one of the "REEN‐
3756 TRANT_PROTO_T_ABC" macros of reentr.h if d_getnetbyname_r is
3757 defined.
3758 "getnetent_r_proto"
3760 From d_getnetent_r.U:
3761 This variable encodes the prototype of getnetent_r. It is zero if
3763 d_getnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3764 macros of reentr.h if d_getnetent_r is defined.
3765 "getprotobyname_r_proto"
3767 From d_getprotobyname_r.U:
3768 This variable encodes the prototype of getprotobyname_r. It is
3770 zero if d_getprotobyname_r is undef, and one of the "REEN‐
3771 TRANT_PROTO_T_ABC" macros of reentr.h if d_getprotobyname_r is
3772 defined.
3773 "getprotobynumber_r_proto"
3775 From d_getprotobynumber_r.U:
3776 This variable encodes the prototype of getprotobynumber_r. It is
3778 zero if d_getprotobynumber_r is undef, and one of the "REEN‐
3779 TRANT_PROTO_T_ABC" macros of reentr.h if d_getprotobynumber_r is
3780 defined.
3781 "getprotoent_r_proto"
3783 From d_getprotoent_r.U:
3784 This variable encodes the prototype of getprotoent_r. It is zero
3786 if d_getprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3787 macros of reentr.h if d_getprotoent_r is defined.
3788 "getpwent_r_proto"
3790 From d_getpwent_r.U:
3791 This variable encodes the prototype of getpwent_r. It is zero if
3793 d_getpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3794 macros of reentr.h if d_getpwent_r is defined.
3795 "getpwnam_r_proto"
3797 From d_getpwnam_r.U:
3798 This variable encodes the prototype of getpwnam_r. It is zero if
3800 d_getpwnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3801 macros of reentr.h if d_getpwnam_r is defined.
3802 "getpwuid_r_proto"
3804 From d_getpwuid_r.U:
3805 This variable encodes the prototype of getpwuid_r. It is zero if
3807 d_getpwuid_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3808 macros of reentr.h if d_getpwuid_r is defined.
3809 "getservbyname_r_proto"
3811 From d_getservbyname_r.U:
3812 This variable encodes the prototype of getservbyname_r. It is zero
3814 if d_getservbyname_r is undef, and one of the "REEN‐
3815 TRANT_PROTO_T_ABC" macros of reentr.h if d_getservbyname_r is
3816 defined.
3817 "getservbyport_r_proto"
3819 From d_getservbyport_r.U:
3820 This variable encodes the prototype of getservbyport_r. It is zero
3822 if d_getservbyport_r is undef, and one of the "REEN‐
3823 TRANT_PROTO_T_ABC" macros of reentr.h if d_getservbyport_r is
3824 defined.
3825 "getservent_r_proto"
3827 From d_getservent_r.U:
3828 This variable encodes the prototype of getservent_r. It is zero if
3830 d_getservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3831 macros of reentr.h if d_getservent_r is defined.
3832 "getspnam_r_proto"
3834 From d_getspnam_r.U:
3835 This variable encodes the prototype of getspnam_r. It is zero if
3837 d_getspnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3838 macros of reentr.h if d_getspnam_r is defined.
3839 "gidformat"
3841 From gidf.U:
3842 This variable contains the format string used for printing a Gid_t.
3844 "gidsign"
3846 From gidsign.U:
3847 This variable contains the signedness of a gidtype. 1 for
3849 unsigned, -1 for signed.
3850 "gidsize"
3852 From gidsize.U:
3853 This variable contains the size of a gidtype in bytes.
3855 "gidtype"
3857 From gidtype.U:
3858 This variable defines Gid_t to be something like gid_t, int,
3860 ushort, or whatever type is used to declare the return type of get‐
3861 gid(). Typically, it is the type of group ids in the kernel.
3862 "glibpth"
3864 From libpth.U:
3865 This variable holds the general path (space-separated) used to find
3867 libraries. It may contain directories that do not exist on this
3868 platform, libpth is the cleaned-up version.
3869 "gmake"
3871 From Loc.U:
3872 This variable is used internally by Configure to determine the full
3874 pathname (if any) of the gmake program. After Configure runs, the
3875 value is reset to a plain "gmake" and is not useful.
3876 "gmtime_r_proto"
3878 From d_gmtime_r.U:
3879 This variable encodes the prototype of gmtime_r. It is zero if
3881 d_gmtime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
3882 of reentr.h if d_gmtime_r is defined.
3883 "gnulibc_version"
3885 From d_gnulibc.U:
3886 This variable contains the version number of the "GNU" C library.
3888 It is usually something like 2.2.5. It is a plain '' if this is
3889 not the "GNU" C library, or if the version is unknown.
3890 "grep"
3892 From Loc.U:
3893 This variable is used internally by Configure to determine the full
3895 pathname (if any) of the grep program. After Configure runs, the
3896 value is reset to a plain "grep" and is not useful.
3897 "groupcat"
3899 From nis.U:
3900 This variable contains a command that produces the text of the
3902 /etc/group file. This is normally "cat /etc/group", but can be
3903 "ypcat group" when "NIS" is used. On some systems, such as os390,
3904 there may be no equivalent command, in which case this variable is
3905 unset.
3906 "groupstype"
3908 From groupstype.U:
3909 This variable defines Groups_t to be something like gid_t, int,
3911 ushort, or whatever type is used for the second argument to get‐
3912 groups() and setgroups(). Usually, this is the same as gidtype
3913 (gid_t), but sometimes it isn't.
3914 "gzip"
3916 From Loc.U:
3917 This variable is used internally by Configure to determine the full
3919 pathname (if any) of the gzip program. After Configure runs, the
3920 value is reset to a plain "gzip" and is not useful.
3921 h
3923 "h_fcntl"
3925 From h_fcntl.U:
3926 This is variable gets set in various places to tell i_fcntl that
3928 <fcntl.h> should be included.
3929 "h_sysfile"
3931 From h_sysfile.U:
3932 This is variable gets set in various places to tell i_sys_file that
3934 <sys/file.h> should be included.
3935 "hint"
3937 From Oldconfig.U:
3938 Gives the type of hints used for previous answers. May be one of
3940 "default", "recommended" or "previous".
3941 "hostcat"
3943 From nis.U:
3944 This variable contains a command that produces the text of the
3946 /etc/hosts file. This is normally "cat /etc/hosts", but can be
3947 "ypcat hosts" when "NIS" is used. On some systems, such as os390,
3948 there may be no equivalent command, in which case this variable is
3949 unset.
3950 "html1dir"
3952 From html1dir.U:
3953 This variable contains the name of the directory in which html
3955 source pages are to be put. This directory is for pages that
3956 describe whole programs, not libraries or modules. It is intended
3957 to correspond roughly to section 1 of the Unix manuals.
3958 "html1direxp"
3960 From html1dir.U:
3961 This variable is the same as the html1dir variable, but is filename
3963 expanded at configuration time, for convenient use in makefiles.
3964 "html3dir"
3966 From html3dir.U:
3967 This variable contains the name of the directory in which html
3969 source pages are to be put. This directory is for pages that
3970 describe libraries or modules. It is intended to correspond
3971 roughly to section 3 of the Unix manuals.
3972 "html3direxp"
3974 From html3dir.U:
3975 This variable is the same as the html3dir variable, but is filename
3977 expanded at configuration time, for convenient use in makefiles.
3978 i
3980 "i16size"
3982 From perlxv.U:
3983 This variable is the size of an I16 in bytes.
3985 "i16type"
3987 From perlxv.U:
3988 This variable contains the C type used for Perl's I16.
3990 "i32size"
3992 From perlxv.U:
3993 This variable is the size of an I32 in bytes.
3995 "i32type"
3997 From perlxv.U:
3998 This variable contains the C type used for Perl's I32.
4000 "i64size"
4002 From perlxv.U:
4003 This variable is the size of an I64 in bytes.
4005 "i64type"
4007 From perlxv.U:
4008 This variable contains the C type used for Perl's I64.
4010 "i8size"
4012 From perlxv.U:
4013 This variable is the size of an I8 in bytes.
4015 "i8type"
4017 From perlxv.U:
4018 This variable contains the C type used for Perl's I8.
4020 "i_arpainet"
4022 From i_arpainet.U:
4023 This variable conditionally defines the "I_ARPA_INET" symbol, and
4025 indicates whether a C program should include <arpa/inet.h>.
4026 "i_bsdioctl"
4028 From i_sysioctl.U:
4029 This variable conditionally defines the "I_SYS_BSDIOCTL" symbol,
4031 which indicates to the C program that <sys/bsdioctl.h> exists and
4032 should be included.
4033 "i_crypt"
4035 From i_crypt.U:
4036 This variable conditionally defines the "I_CRYPT" symbol, and indi‐
4038 cates whether a C program should include <crypt.h>.
4039 "i_db"
4041 From i_db.U:
4042 This variable conditionally defines the "I_DB" symbol, and indi‐
4044 cates whether a C program may include Berkeley's "DB" include file
4045 <db.h>.
4046 "i_dbm"
4048 From i_dbm.U:
4049 This variable conditionally defines the "I_DBM" symbol, which indi‐
4051 cates to the C program that <dbm.h> exists and should be included.
4052 "i_dirent"
4054 From i_dirent.U:
4055 This variable conditionally defines "I_DIRENT", which indicates to
4057 the C program that it should include <dirent.h>.
4058 "i_dld"
4060 From i_dld.U:
4061 This variable conditionally defines the "I_DLD" symbol, which indi‐
4063 cates to the C program that <dld.h> ("GNU" dynamic loading) exists
4064 and should be included.
4065 "i_dlfcn"
4067 From i_dlfcn.U:
4068 This variable conditionally defines the "I_DLFCN" symbol, which
4070 indicates to the C program that <dlfcn.h> exists and should be
4071 included.
4072 "i_fcntl"
4074 From i_fcntl.U:
4075 This variable controls the value of "I_FCNTL" (which tells the C
4077 program to include <fcntl.h>).
4078 "i_float"
4080 From i_float.U:
4081 This variable conditionally defines the "I_FLOAT" symbol, and indi‐
4083 cates whether a C program may include <float.h> to get symbols like
4084 "DBL_MAX" or "DBL_MIN", i.e. machine dependent floating point val‐
4085 ues.
4086 "i_fp"
4088 From i_fp.U:
4089 This variable conditionally defines the "I_FP" symbol, and indi‐
4091 cates whether a C program should include <fp.h>.
4092 "i_fp_class"
4094 From i_fp_class.U:
4095 This variable conditionally defines the "I_FP_CLASS" symbol, and
4097 indicates whether a C program should include <fp_class.h>.
4098 "i_gdbm"
4100 From i_gdbm.U:
4101 This variable conditionally defines the "I_GDBM" symbol, which
4103 indicates to the C program that <gdbm.h> exists and should be
4104 included.
4105 "i_grp"
4107 From i_grp.U:
4108 This variable conditionally defines the "I_GRP" symbol, and indi‐
4110 cates whether a C program should include <grp.h>.
4111 "i_ieeefp"
4113 From i_ieeefp.U:
4114 This variable conditionally defines the "I_IEEEFP" symbol, and
4116 indicates whether a C program should include <ieeefp.h>.
4117 "i_inttypes"
4119 From i_inttypes.U:
4120 This variable conditionally defines the "I_INTTYPES" symbol, and
4122 indicates whether a C program should include <inttypes.h>.
4123 "i_langinfo"
4125 From i_langinfo.U:
4126 This variable conditionally defines the "I_LANGINFO" symbol, and
4128 indicates whether a C program should include <langinfo.h>.
4129 "i_libutil"
4131 From i_libutil.U:
4132 This variable conditionally defines the "I_LIBUTIL" symbol, and
4134 indicates whether a C program should include <libutil.h>.
4135 "i_limits"
4137 From i_limits.U:
4138 This variable conditionally defines the "I_LIMITS" symbol, and
4140 indicates whether a C program may include <limits.h> to get symbols
4141 like "WORD_BIT" and friends.
4142 "i_locale"
4144 From i_locale.U:
4145 This variable conditionally defines the "I_LOCALE" symbol, and
4147 indicates whether a C program should include <locale.h>.
4148 "i_machcthr"
4150 From i_machcthr.U:
4151 This variable conditionally defines the "I_MACH_CTHREADS" symbol,
4153 and indicates whether a C program should include <mach/cthreads.h>.
4154 "i_malloc"
4156 From i_malloc.U:
4157 This variable conditionally defines the "I_MALLOC" symbol, and
4159 indicates whether a C program should include <malloc.h>.
4160 "i_math"
4162 From i_math.U:
4163 This variable conditionally defines the "I_MATH" symbol, and indi‐
4165 cates whether a C program may include <math.h>.
4166 "i_memory"
4168 From i_memory.U:
4169 This variable conditionally defines the "I_MEMORY" symbol, and
4171 indicates whether a C program should include <memory.h>.
4172 "i_mntent"
4174 From i_mntent.U:
4175 This variable conditionally defines the "I_MNTENT" symbol, and
4177 indicates whether a C program should include <mntent.h>.
4178 "i_ndbm"
4180 From i_ndbm.U:
4181 This variable conditionally defines the "I_NDBM" symbol, which
4183 indicates to the C program that <ndbm.h> exists and should be
4184 included.
4185 "i_netdb"
4187 From i_netdb.U:
4188 This variable conditionally defines the "I_NETDB" symbol, and indi‐
4190 cates whether a C program should include <netdb.h>.
4191 "i_neterrno"
4193 From i_neterrno.U:
4194 This variable conditionally defines the "I_NET_ERRNO" symbol, which
4196 indicates to the C program that <net/errno.h> exists and should be
4197 included.
4198 "i_netinettcp"
4200 From i_netinettcp.U:
4201 This variable conditionally defines the "I_NETINET_TCP" symbol, and
4203 indicates whether a C program should include <netinet/tcp.h>.
4204 "i_niin"
4206 From i_niin.U:
4207 This variable conditionally defines "I_NETINET_IN", which indicates
4209 to the C program that it should include <netinet/in.h>. Otherwise,
4210 you may try <sys/in.h>.
4211 "i_poll"
4213 From i_poll.U:
4214 This variable conditionally defines the "I_POLL" symbol, and indi‐
4216 cates whether a C program should include <poll.h>.
4217 "i_prot"
4219 From i_prot.U:
4220 This variable conditionally defines the "I_PROT" symbol, and indi‐
4222 cates whether a C program should include <prot.h>.
4223 "i_pthread"
4225 From i_pthread.U:
4226 This variable conditionally defines the "I_PTHREAD" symbol, and
4228 indicates whether a C program should include <pthread.h>.
4229 "i_pwd"
4231 From i_pwd.U:
4232 This variable conditionally defines "I_PWD", which indicates to the
4234 C program that it should include <pwd.h>.
4235 "i_rpcsvcdbm"
4237 From i_dbm.U:
4238 This variable conditionally defines the "I_RPCSVC_DBM" symbol,
4240 which indicates to the C program that <rpcsvc/dbm.h> exists and
4241 should be included. Some System V systems might need this instead
4242 of <dbm.h>.
4243 "i_sfio"
4245 From i_sfio.U:
4246 This variable conditionally defines the "I_SFIO" symbol, and indi‐
4248 cates whether a C program should include <sfio.h>.
4249 "i_sgtty"
4251 From i_termio.U:
4252 This variable conditionally defines the "I_SGTTY" symbol, which
4254 indicates to the C program that it should include <sgtty.h> rather
4255 than <termio.h>.
4256 "i_shadow"
4258 From i_shadow.U:
4259 This variable conditionally defines the "I_SHADOW" symbol, and
4261 indicates whether a C program should include <shadow.h>.
4262 "i_socks"
4264 From i_socks.U:
4265 This variable conditionally defines the "I_SOCKS" symbol, and indi‐
4267 cates whether a C program should include <socks.h>.
4268 "i_stdarg"
4270 From i_varhdr.U:
4271 This variable conditionally defines the "I_STDARG" symbol, which
4273 indicates to the C program that <stdarg.h> exists and should be
4274 included.
4275 "i_stddef"
4277 From i_stddef.U:
4278 This variable conditionally defines the "I_STDDEF" symbol, which
4280 indicates to the C program that <stddef.h> exists and should be
4281 included.
4282 "i_stdlib"
4284 From i_stdlib.U:
4285 This variable conditionally defines the "I_STDLIB" symbol, which
4287 indicates to the C program that <stdlib.h> exists and should be
4288 included.
4289 "i_string"
4291 From i_string.U:
4292 This variable conditionally defines the "I_STRING" symbol, which
4294 indicates that <string.h> should be included rather than
4295 <strings.h>.
4296 "i_sunmath"
4298 From i_sunmath.U:
4299 This variable conditionally defines the "I_SUNMATH" symbol, and
4301 indicates whether a C program should include <sunmath.h>.
4302 "i_sysaccess"
4304 From i_sysaccess.U:
4305 This variable conditionally defines the "I_SYS_ACCESS" symbol, and
4307 indicates whether a C program should include <sys/access.h>.
4308 "i_sysdir"
4310 From i_sysdir.U:
4311 This variable conditionally defines the "I_SYS_DIR" symbol, and
4313 indicates whether a C program should include <sys/dir.h>.
4314 "i_sysfile"
4316 From i_sysfile.U:
4317 This variable conditionally defines the "I_SYS_FILE" symbol, and
4319 indicates whether a C program should include <sys/file.h> to get
4320 "R_OK" and friends.
4321 "i_sysfilio"
4323 From i_sysioctl.U:
4324 This variable conditionally defines the "I_SYS_FILIO" symbol, which
4326 indicates to the C program that <sys/filio.h> exists and should be
4327 included in preference to <sys/ioctl.h>.
4328 "i_sysin"
4330 From i_niin.U:
4331 This variable conditionally defines "I_SYS_IN", which indicates to
4333 the C program that it should include <sys/in.h> instead of
4334 <netinet/in.h>.
4335 "i_sysioctl"
4337 From i_sysioctl.U:
4338 This variable conditionally defines the "I_SYS_IOCTL" symbol, which
4340 indicates to the C program that <sys/ioctl.h> exists and should be
4341 included.
4342 "i_syslog"
4344 From i_syslog.U:
4345 This variable conditionally defines the "I_SYSLOG" symbol, and
4347 indicates whether a C program should include <syslog.h>.
4348 "i_sysmman"
4350 From i_sysmman.U:
4351 This variable conditionally defines the "I_SYS_MMAN" symbol, and
4353 indicates whether a C program should include <sys/mman.h>.
4354 "i_sysmode"
4356 From i_sysmode.U:
4357 This variable conditionally defines the "I_SYSMODE" symbol, and
4359 indicates whether a C program should include <sys/mode.h>.
4360 "i_sysmount"
4362 From i_sysmount.U:
4363 This variable conditionally defines the "I_SYSMOUNT" symbol, and
4365 indicates whether a C program should include <sys/mount.h>.
4366 "i_sysndir"
4368 From i_sysndir.U:
4369 This variable conditionally defines the "I_SYS_NDIR" symbol, and
4371 indicates whether a C program should include <sys/ndir.h>.
4372 "i_sysparam"
4374 From i_sysparam.U:
4375 This variable conditionally defines the "I_SYS_PARAM" symbol, and
4377 indicates whether a C program should include <sys/param.h>.
4378 "i_sysresrc"
4380 From i_sysresrc.U:
4381 This variable conditionally defines the "I_SYS_RESOURCE" symbol,
4383 and indicates whether a C program should include <sys/resource.h>.
4384 "i_syssecrt"
4386 From i_syssecrt.U:
4387 This variable conditionally defines the "I_SYS_SECURITY" symbol,
4389 and indicates whether a C program should include <sys/security.h>.
4390 "i_sysselct"
4392 From i_sysselct.U:
4393 This variable conditionally defines "I_SYS_SELECT", which indicates
4395 to the C program that it should include <sys/select.h> in order to
4396 get the definition of struct timeval.
4397 "i_syssockio"
4399 From i_sysioctl.U:
4400 This variable conditionally defines "I_SYS_SOCKIO" to indicate to
4402 the C program that socket ioctl codes may be found in
4403 <sys/sockio.h> instead of <sys/ioctl.h>.
4404 "i_sysstat"
4406 From i_sysstat.U:
4407 This variable conditionally defines the "I_SYS_STAT" symbol, and
4409 indicates whether a C program should include <sys/stat.h>.
4410 "i_sysstatfs"
4412 From i_sysstatfs.U:
4413 This variable conditionally defines the "I_SYSSTATFS" symbol, and
4415 indicates whether a C program should include <sys/statfs.h>.
4416 "i_sysstatvfs"
4418 From i_sysstatvfs.U:
4419 This variable conditionally defines the "I_SYSSTATVFS" symbol, and
4421 indicates whether a C program should include <sys/statvfs.h>.
4422 "i_systime"
4424 From i_time.U:
4425 This variable conditionally defines "I_SYS_TIME", which indicates
4427 to the C program that it should include <sys/time.h>.
4428 "i_systimek"
4430 From i_time.U:
4431 This variable conditionally defines "I_SYS_TIME_KERNEL", which
4433 indicates to the C program that it should include <sys/time.h> with
4434 "KERNEL" defined.
4435 "i_systimes"
4437 From i_systimes.U:
4438 This variable conditionally defines the "I_SYS_TIMES" symbol, and
4440 indicates whether a C program should include <sys/times.h>.
4441 "i_systypes"
4443 From i_systypes.U:
4444 This variable conditionally defines the "I_SYS_TYPES" symbol, and
4446 indicates whether a C program should include <sys/types.h>.
4447 "i_sysuio"
4449 From i_sysuio.U:
4450 This variable conditionally defines the "I_SYSUIO" symbol, and
4452 indicates whether a C program should include <sys/uio.h>.
4453 "i_sysun"
4455 From i_sysun.U:
4456 This variable conditionally defines "I_SYS_UN", which indicates to
4458 the C program that it should include <sys/un.h> to get "UNIX"
4459 domain socket definitions.
4460 "i_sysutsname"
4462 From i_sysutsname.U:
4463 This variable conditionally defines the "I_SYSUTSNAME" symbol, and
4465 indicates whether a C program should include <sys/utsname.h>.
4466 "i_sysvfs"
4468 From i_sysvfs.U:
4469 This variable conditionally defines the "I_SYSVFS" symbol, and
4471 indicates whether a C program should include <sys/vfs.h>.
4472 "i_syswait"
4474 From i_syswait.U:
4475 This variable conditionally defines "I_SYS_WAIT", which indicates
4477 to the C program that it should include <sys/wait.h>.
4478 "i_termio"
4480 From i_termio.U:
4481 This variable conditionally defines the "I_TERMIO" symbol, which
4483 indicates to the C program that it should include <termio.h> rather
4484 than <sgtty.h>.
4485 "i_termios"
4487 From i_termio.U:
4488 This variable conditionally defines the "I_TERMIOS" symbol, which
4490 indicates to the C program that the "POSIX" <termios.h> file is to
4491 be included.
4492 "i_time"
4494 From i_time.U:
4495 This variable conditionally defines "I_TIME", which indicates to
4497 the C program that it should include <time.h>.
4498 "i_unistd"
4500 From i_unistd.U:
4501 This variable conditionally defines the "I_UNISTD" symbol, and
4503 indicates whether a C program should include <unistd.h>.
4504 "i_ustat"
4506 From i_ustat.U:
4507 This variable conditionally defines the "I_USTAT" symbol, and indi‐
4509 cates whether a C program should include <ustat.h>.
4510 "i_utime"
4512 From i_utime.U:
4513 This variable conditionally defines the "I_UTIME" symbol, and indi‐
4515 cates whether a C program should include <utime.h>.
4516 "i_values"
4518 From i_values.U:
4519 This variable conditionally defines the "I_VALUES" symbol, and
4521 indicates whether a C program may include <values.h> to get symbols
4522 like "MAXLONG" and friends.
4523 "i_varargs"
4525 From i_varhdr.U:
4526 This variable conditionally defines "I_VARARGS", which indicates to
4528 the C program that it should include <varargs.h>.
4529 "i_varhdr"
4531 From i_varhdr.U:
4532 Contains the name of the header to be included to get va_dcl defi‐
4534 nition. Typically one of varargs.h or stdarg.h.
4535 "i_vfork"
4537 From i_vfork.U:
4538 This variable conditionally defines the "I_VFORK" symbol, and indi‐
4540 cates whether a C program should include vfork.h.
4541 "ignore_versioned_solibs"
4543 From libs.U:
4544 This variable should be non-empty if non-versioned shared libraries
4546 (libfoo.so.x.y) are to be ignored (because they cannot be linked
4547 against).
4548 "inc_version_list"
4550 From inc_version_list.U:
4551 This variable specifies the list of subdirectories in over which
4553 perl.c:incpush() and lib/lib.pm will automatically search when
4554 adding directories to @"INC". The elements in the list are sepa‐
4555 rated by spaces. This is only useful if you have a perl library
4556 directory tree structured like the default one. See "INSTALL" for
4557 how this works. The versioned site_perl directory was introduced
4558 in 5.005, so that is the lowest possible value.
4559 "inc_version_list_init"
4561 From inc_version_list.U:
4562 This variable holds the same list as inc_version_list, but each
4564 item is enclosed in double quotes and separated by commas, suitable
4565 for use in the "PERL_INC_VERSION_LIST" initialization.
4566 "incpath"
4568 From usrinc.U:
4569 This variable must preceed the normal include path to get hte right
4571 one, as in $incpath/usr/include or $incpath/usr/lib. Value can be
4572 "" or /bsd43 on mips.
4573 "inews"
4575 From Loc.U:
4576 This variable is defined but not used by Configure. The value is a
4578 plain '' and is not useful.
4579 "installarchlib"
4581 From archlib.U:
4582 This variable is really the same as archlibexp but may differ on
4584 those systems using "AFS". For extra portability, only this vari‐
4585 able should be used in makefiles.
4586 "installbin"
4588 From bin.U:
4589 This variable is the same as binexp unless "AFS" is running in
4591 which case the user is explicitely prompted for it. This variable
4592 should always be used in your makefiles for maximum portability.
4593 "installhtml1dir"
4595 From html1dir.U:
4596 This variable is really the same as html1direxp, unless you are
4598 using a different installprefix. For extra portability, you should
4599 only use this variable within your makefiles.
4600 "installhtml3dir"
4602 From html3dir.U:
4603 This variable is really the same as html3direxp, unless you are
4605 using a different installprefix. For extra portability, you should
4606 only use this variable within your makefiles.
4607 "installman1dir"
4609 From man1dir.U:
4610 This variable is really the same as man1direxp, unless you are
4612 using "AFS" in which case it points to the read/write location
4613 whereas man1direxp only points to the read-only access location.
4614 For extra portability, you should only use this variable within
4615 your makefiles.
4616 "installman3dir"
4618 From man3dir.U:
4619 This variable is really the same as man3direxp, unless you are
4621 using "AFS" in which case it points to the read/write location
4622 whereas man3direxp only points to the read-only access location.
4623 For extra portability, you should only use this variable within
4624 your makefiles.
4625 "installprefix"
4627 From installprefix.U:
4628 This variable holds the name of the directory below which "make
4630 install" will install the package. For most users, this is the
4631 same as prefix. However, it is useful for installing the software
4632 into a different (usually temporary) location after which it can be
4633 bundled up and moved somehow to the final location specified by
4634 prefix.
4635 "installprefixexp"
4637 From installprefix.U:
4638 This variable holds the full absolute path of installprefix with
4640 all ~-expansion done.
4641 "installprivlib"
4643 From privlib.U:
4644 This variable is really the same as privlibexp but may differ on
4646 those systems using "AFS". For extra portability, only this vari‐
4647 able should be used in makefiles.
4648 "installscript"
4650 From scriptdir.U:
4651 This variable is usually the same as scriptdirexp, unless you are
4653 on a system running "AFS", in which case they may differ slightly.
4654 You should always use this variable within your makefiles for
4655 portability.
4656 "installsitearch"
4658 From sitearch.U:
4659 This variable is really the same as sitearchexp but may differ on
4661 those systems using "AFS". For extra portability, only this vari‐
4662 able should be used in makefiles.
4663 "installsitebin"
4665 From sitebin.U:
4666 This variable is usually the same as sitebinexp, unless you are on
4668 a system running "AFS", in which case they may differ slightly. You
4669 should always use this variable within your makefiles for portabil‐
4670 ity.
4671 "installsitehtml1dir"
4673 From sitehtml1dir.U:
4674 This variable is really the same as sitehtml1direxp, unless you are
4676 using "AFS" in which case it points to the read/write location
4677 whereas html1direxp only points to the read-only access location.
4678 For extra portability, you should only use this variable within
4679 your makefiles.
4680 "installsitehtml3dir"
4682 From sitehtml3dir.U:
4683 This variable is really the same as sitehtml3direxp, unless you are
4685 using "AFS" in which case it points to the read/write location
4686 whereas html3direxp only points to the read-only access location.
4687 For extra portability, you should only use this variable within
4688 your makefiles.
4689 "installsitelib"
4691 From sitelib.U:
4692 This variable is really the same as sitelibexp but may differ on
4694 those systems using "AFS". For extra portability, only this vari‐
4695 able should be used in makefiles.
4696 "installsiteman1dir"
4698 From siteman1dir.U:
4699 This variable is really the same as siteman1direxp, unless you are
4701 using "AFS" in which case it points to the read/write location
4702 whereas man1direxp only points to the read-only access location.
4703 For extra portability, you should only use this variable within
4704 your makefiles.
4705 "installsiteman3dir"
4707 From siteman3dir.U:
4708 This variable is really the same as siteman3direxp, unless you are
4710 using "AFS" in which case it points to the read/write location
4711 whereas man3direxp only points to the read-only access location.
4712 For extra portability, you should only use this variable within
4713 your makefiles.
4714 "installsitescript"
4716 From sitescript.U:
4717 This variable is usually the same as sitescriptexp, unless you are
4719 on a system running "AFS", in which case they may differ slightly.
4720 You should always use this variable within your makefiles for
4721 portability.
4722 "installstyle"
4724 From installstyle.U:
4725 This variable describes the "style" of the perl installation. This
4727 is intended to be useful for tools that need to manipulate entire
4728 perl distributions. Perl itself doesn't use this to find its
4729 libraries -- the library directories are stored directly in Con‐
4730 fig.pm. Currently, there are only two styles: "lib" and
4731 lib/perl5. The default library locations (e.g. privlib, sitelib)
4732 are either $prefix/lib or $prefix/lib/perl5. The former is useful
4733 if $prefix is a directory dedicated to perl (e.g. /opt/perl), while
4734 the latter is useful if $prefix is shared by many packages, e.g. if
4735 $prefix=/usr/local.
4736 Unfortunately, while this "style" variable is used to set defaults
4738 for all three directory hierarchies (core, vendor, and site), there
4739 is no guarantee that the same style is actually appropriate for all
4740 those directories. For example, $prefix might be /opt/perl, but
4741 $siteprefix might be /usr/local. (Perhaps, in retrospect, the
4742 "lib" style should never have been supported, but it did seem like
4743 a nice idea at the time.)
4744 The situation is even less clear for tools such as MakeMaker that
4746 can be used to install additional modules into non-standard places.
4747 For example, if a user intends to install a module into a private
4748 directory (perhaps by setting "PREFIX" on the Makefile.PL command
4749 line), then there is no reason to assume that the Configure-time
4750 $installstyle setting will be relevant for that "PREFIX".
4751 This may later be extended to include other information, so be
4753 careful with pattern-matching on the results.
4754 For compatibility with perl5.005 and earlier, the default setting
4756 is based on whether or not $prefix contains the string "perl".
4757 "installusrbinperl"
4759 From instubperl.U:
4760 This variable tells whether Perl should be installed also as
4762 /usr/bin/perl in addition to $installbin/perl
4763 "installvendorarch"
4765 From vendorarch.U:
4766 This variable is really the same as vendorarchexp but may differ on
4768 those systems using "AFS". For extra portability, only this vari‐
4769 able should be used in makefiles.
4770 "installvendorbin"
4772 From vendorbin.U:
4773 This variable is really the same as vendorbinexp but may differ on
4775 those systems using "AFS". For extra portability, only this vari‐
4776 able should be used in makefiles.
4777 "installvendorhtml1dir"
4779 From vendorhtml1dir.U:
4780 This variable is really the same as vendorhtml1direxp but may dif‐
4782 fer on those systems using "AFS". For extra portability, only this
4783 variable should be used in makefiles.
4784 "installvendorhtml3dir"
4786 From vendorhtml3dir.U:
4787 This variable is really the same as vendorhtml3direxp but may dif‐
4789 fer on those systems using "AFS". For extra portability, only this
4790 variable should be used in makefiles.
4791 "installvendorlib"
4793 From vendorlib.U:
4794 This variable is really the same as vendorlibexp but may differ on
4796 those systems using "AFS". For extra portability, only this vari‐
4797 able should be used in makefiles.
4798 "installvendorman1dir"
4800 From vendorman1dir.U:
4801 This variable is really the same as vendorman1direxp but may differ
4803 on those systems using "AFS". For extra portability, only this
4804 variable should be used in makefiles.
4805 "installvendorman3dir"
4807 From vendorman3dir.U:
4808 This variable is really the same as vendorman3direxp but may differ
4810 on those systems using "AFS". For extra portability, only this
4811 variable should be used in makefiles.
4812 "installvendorscript"
4814 From vendorscript.U:
4815 This variable is really the same as vendorscriptexp but may differ
4817 on those systems using "AFS". For extra portability, only this
4818 variable should be used in makefiles.
4819 "intsize"
4821 From intsize.U:
4822 This variable contains the value of the "INTSIZE" symbol, which
4824 indicates to the C program how many bytes there are in an int.
4825 "issymlink"
4827 From issymlink.U:
4828 This variable holds the test command to test for a symbolic link
4830 (if they are supported). Typical values include "test -h" and
4831 "test -L".
4832 "ivdformat"
4834 From perlxvf.U:
4835 This variable contains the format string used for printing a Perl
4837 "IV" as a signed decimal integer.
4838 "ivsize"
4840 From perlxv.U:
4841 This variable is the size of an "IV" in bytes.
4843 "ivtype"
4845 From perlxv.U:
4846 This variable contains the C type used for Perl's "IV".
4848 k
4850 "known_extensions"
4852 From Extensions.U:
4853 This variable holds a list of all "XS" extensions included in the
4855 package.
4856 "ksh"
4858 From Loc.U:
4859 This variable is defined but not used by Configure. The value is a
4861 plain '' and is not useful.
4862 l
4864 "ld"
4866 From dlsrc.U:
4867 This variable indicates the program to be used to link libraries
4869 for dynamic loading. On some systems, it is "ld". On "ELF" sys‐
4870 tems, it should be $cc. Mostly, we'll try to respect the hint file
4871 setting.
4872 "lddlflags"
4874 From dlsrc.U:
4875 This variable contains any special flags that might need to be
4877 passed to $ld to create a shared library suitable for dynamic load‐
4878 ing. It is up to the makefile to use it. For hpux, it should be
4879 "-b". For sunos 4.1, it is empty.
4880 "ldflags"
4882 From ccflags.U:
4883 This variable contains any additional C loader flags desired by the
4885 user. It is up to the Makefile to use this.
4886 "ldflags_uselargefiles"
4888 From uselfs.U:
4889 This variable contains the loader flags needed by large file builds
4891 and added to ldflags by hints files.
4892 "ldlibpthname"
4894 From libperl.U:
4895 This variable holds the name of the shared library search path,
4897 often "LD_LIBRARY_PATH". To get an empty string, the hints file
4898 must set this to "none".
4899 "less"
4901 From Loc.U:
4902 This variable is used internally by Configure to determine the full
4904 pathname (if any) of the less program. After Configure runs, the
4905 value is reset to a plain "less" and is not useful.
4906 "lib_ext"
4908 From Unix.U:
4909 This is an old synonym for _a.
4911 "libc"
4913 From libc.U:
4914 This variable contains the location of the C library.
4916 "libperl"
4918 From libperl.U:
4919 The perl executable is obtained by linking perlmain.c with libperl,
4921 any static extensions (usually just DynaLoader), and any other
4922 libraries needed on this system. libperl is usually libperl.a, but
4923 can also be libperl.so.xxx if the user wishes to build a perl exe‐
4924 cutable with a shared library.
4925 "libpth"
4927 From libpth.U:
4928 This variable holds the general path (space-separated) used to find
4930 libraries. It is intended to be used by other units.
4931 "libs"
4933 From libs.U:
4934 This variable holds the additional libraries we want to use. It is
4936 up to the Makefile to deal with it. The list can be empty.
4937 "libsdirs"
4939 From libs.U:
4940 This variable holds the directory names aka dirnames of the
4942 libraries we found and accepted, duplicates are removed.
4943 "libsfiles"
4945 From libs.U:
4946 This variable holds the filenames aka basenames of the libraries we
4948 found and accepted.
4949 "libsfound"
4951 From libs.U:
4952 This variable holds the full pathnames of the libraries we found
4954 and accepted.
4955 "libspath"
4957 From libs.U:
4958 This variable holds the directory names probed for libraries.
4960 "libswanted"
4962 From Myinit.U:
4963 This variable holds a list of all the libraries we want to search.
4965 The order is chosen to pick up the c library ahead of ucb or bsd
4966 libraries for SVR4.
4967 "libswanted_uselargefiles"
4969 From uselfs.U:
4970 This variable contains the libraries needed by large file builds
4972 and added to ldflags by hints files. It is a space separated list
4973 of the library names without the "lib" prefix or any suffix, just
4974 like libswanted..
4975 "line"
4977 From Loc.U:
4978 This variable is defined but not used by Configure. The value is a
4980 plain '' and is not useful.
4981 "lint"
4983 From Loc.U:
4984 This variable is defined but not used by Configure. The value is a
4986 plain '' and is not useful.
4987 "lkflags"
4989 From ccflags.U:
4990 This variable contains any additional C partial linker flags
4992 desired by the user. It is up to the Makefile to use this.
4993 "ln"
4995 From Loc.U:
4996 This variable is used internally by Configure to determine the full
4998 pathname (if any) of the ln program. After Configure runs, the
4999 value is reset to a plain "ln" and is not useful.
5000 "lns"
5002 From lns.U:
5003 This variable holds the name of the command to make symbolic links
5005 (if they are supported). It can be used in the Makefile. It is
5006 either "ln -s" or "ln"
5007 "localtime_r_proto"
5009 From d_localtime_r.U:
5010 This variable encodes the prototype of localtime_r. It is zero if
5012 d_localtime_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5013 macros of reentr.h if d_localtime_r is defined.
5014 "locincpth"
5016 From ccflags.U:
5017 This variable contains a list of additional directories to be
5019 searched by the compiler. The appropriate "-I" directives will be
5020 added to ccflags. This is intended to simplify setting local
5021 directories from the Configure command line. It's not much, but it
5022 parallels the loclibpth stuff in libpth.U.
5023 "loclibpth"
5025 From libpth.U:
5026 This variable holds the paths (space-separated) used to find local
5028 libraries. It is prepended to libpth, and is intended to be easily
5029 set from the command line.
5030 "longdblsize"
5032 From d_longdbl.U:
5033 This variable contains the value of the "LONG_DOUBLESIZE" symbol,
5035 which indicates to the C program how many bytes there are in a long
5036 double, if this system supports long doubles.
5037 "longlongsize"
5039 From d_longlong.U:
5040 This variable contains the value of the "LONGLONGSIZE" symbol,
5042 which indicates to the C program how many bytes there are in a long
5043 long, if this system supports long long.
5044 "longsize"
5046 From intsize.U:
5047 This variable contains the value of the "LONGSIZE" symbol, which
5049 indicates to the C program how many bytes there are in a long.
5050 "lp"
5052 From Loc.U:
5053 This variable is defined but not used by Configure. The value is a
5055 plain '' and is not useful.
5056 "lpr"
5058 From Loc.U:
5059 This variable is defined but not used by Configure. The value is a
5061 plain '' and is not useful.
5062 "ls"
5064 From Loc.U:
5065 This variable is used internally by Configure to determine the full
5067 pathname (if any) of the ls program. After Configure runs, the
5068 value is reset to a plain "ls" and is not useful.
5069 "lseeksize"
5071 From lseektype.U:
5072 This variable defines lseektype to be something like off_t, long,
5074 or whatever type is used to declare lseek offset's type in the ker‐
5075 nel (which also appears to be lseek's return type).
5076 "lseektype"
5078 From lseektype.U:
5079 This variable defines lseektype to be something like off_t, long,
5081 or whatever type is used to declare lseek offset's type in the ker‐
5082 nel (which also appears to be lseek's return type).
5083 m
5085 "mail"
5087 From Loc.U:
5088 This variable is defined but not used by Configure. The value is a
5090 plain '' and is not useful.
5091 "mailx"
5093 From Loc.U:
5094 This variable is defined but not used by Configure. The value is a
5096 plain '' and is not useful.
5097 "make"
5099 From Loc.U:
5100 This variable is used internally by Configure to determine the full
5102 pathname (if any) of the make program. After Configure runs, the
5103 value is reset to a plain "make" and is not useful.
5104 "make_set_make"
5106 From make.U:
5107 Some versions of "make" set the variable "MAKE". Others do not.
5109 This variable contains the string to be included in Makefile.SH so
5110 that "MAKE" is set if needed, and not if not needed. Possible val‐
5111 ues are:
5112 make_set_make="#" # If your make program handles this for
5114 you,
5115 make_set_make="MAKE=$make" # if it doesn't.
5117 This uses a comment character to distinguish a "set" value (from a
5119 previous config.sh or Configure "-D" option) from an uncomputed
5120 value.
5121 "mallocobj"
5123 From mallocsrc.U:
5124 This variable contains the name of the malloc.o that this package
5126 generates, if that malloc.o is preferred over the system malloc.
5127 Otherwise the value is null. This variable is intended for gener‐
5128 ating Makefiles. See mallocsrc.
5129 "mallocsrc"
5131 From mallocsrc.U:
5132 This variable contains the name of the malloc.c that comes with the
5134 package, if that malloc.c is preferred over the system malloc.
5135 Otherwise the value is null. This variable is intended for gener‐
5136 ating Makefiles.
5137 "malloctype"
5139 From mallocsrc.U:
5140 This variable contains the kind of ptr returned by malloc and real‐
5142 loc.
5143 "man1dir"
5145 From man1dir.U:
5146 This variable contains the name of the directory in which manual
5148 source pages are to be put. It is the responsibility of the Make‐
5149 file.SH to get the value of this into the proper command. You must
5150 be prepared to do the ~name expansion yourself.
5151 "man1direxp"
5153 From man1dir.U:
5154 This variable is the same as the man1dir variable, but is filename
5156 expanded at configuration time, for convenient use in makefiles.
5157 "man1ext"
5159 From man1dir.U:
5160 This variable contains the extension that the manual page should
5162 have: one of "n", "l", or 1. The Makefile must supply the .. See
5163 man1dir.
5164 "man3dir"
5166 From man3dir.U:
5167 This variable contains the name of the directory in which manual
5169 source pages are to be put. It is the responsibility of the Make‐
5170 file.SH to get the value of this into the proper command. You must
5171 be prepared to do the ~name expansion yourself.
5172 "man3direxp"
5174 From man3dir.U:
5175 This variable is the same as the man3dir variable, but is filename
5177 expanded at configuration time, for convenient use in makefiles.
5178 "man3ext"
5180 From man3dir.U:
5181 This variable contains the extension that the manual page should
5183 have: one of "n", "l", or 3. The Makefile must supply the .. See
5184 man3dir.
5185 M
5187 "Mcc"
5189 From Loc.U:
5190 This variable is used internally by Configure to determine the full
5192 pathname (if any) of the Mcc program. After Configure runs, the
5193 value is reset to a plain "Mcc" and is not useful.
5194 "mips_type"
5196 From usrinc.U:
5197 This variable holds the environment type for the mips system. Pos‐
5199 sible values are "BSD 4.3" and "System V".
5200 "mistrustnm"
5202 From Csym.U:
5203 This variable can be used to establish a fallthrough for the cases
5205 where nm fails to find a symbol. If usenm is false or usenm is
5206 true and mistrustnm is false, this variable has no effect. If
5207 usenm is true and mistrustnm is "compile", a test program will be
5208 compiled to try to find any symbol that can't be located via nm
5209 lookup. If mistrustnm is "run", the test program will be run as
5210 well as being compiled.
5211 "mkdir"
5213 From Loc.U:
5214 This variable is used internally by Configure to determine the full
5216 pathname (if any) of the mkdir program. After Configure runs, the
5217 value is reset to a plain "mkdir" and is not useful.
5218 "mmaptype"
5220 From d_mmap.U:
5221 This symbol contains the type of pointer returned by mmap() (and
5223 simultaneously the type of the first argument). It can be "void *"
5224 or "caddr_t".
5225 "modetype"
5227 From modetype.U:
5228 This variable defines modetype to be something like mode_t, int,
5230 unsigned short, or whatever type is used to declare file modes for
5231 system calls.
5232 "more"
5234 From Loc.U:
5235 This variable is used internally by Configure to determine the full
5237 pathname (if any) of the more program. After Configure runs, the
5238 value is reset to a plain "more" and is not useful.
5239 "multiarch"
5241 From multiarch.U:
5242 This variable conditionally defines the "MULTIARCH" symbol which
5244 signifies the presence of multiplatform files. This is normally
5245 set by hints files.
5246 "mv"
5248 From Loc.U:
5249 This variable is defined but not used by Configure. The value is a
5251 plain '' and is not useful.
5252 "myarchname"
5254 From archname.U:
5255 This variable holds the architecture name computed by Configure in
5257 a previous run. It is not intended to be perused by any user and
5258 should never be set in a hint file.
5259 "mydomain"
5261 From myhostname.U:
5262 This variable contains the eventual value of the "MYDOMAIN" symbol,
5264 which is the domain of the host the program is going to run on.
5265 The domain must be appended to myhostname to form a complete host
5266 name. The dot comes with mydomain, and need not be supplied by the
5267 program.
5268 "myhostname"
5270 From myhostname.U:
5271 This variable contains the eventual value of the "MYHOSTNAME" sym‐
5273 bol, which is the name of the host the program is going to run on.
5274 The domain is not kept with hostname, but must be gotten from mydo‐
5275 main. The dot comes with mydomain, and need not be supplied by the
5276 program.
5277 "myuname"
5279 From Oldconfig.U:
5280 The output of "uname -a" if available, otherwise the hostname. On
5282 Xenix, pseudo variables assignments in the output are stripped,
5283 thank you. The whole thing is then lower-cased.
5284 n
5286 "n" From n.U:
5288 This variable contains the "-n" flag if that is what causes the
5290 echo command to suppress newline. Otherwise it is null. Correct
5291 usage is $echo $n "prompt for a question: $c".
5292 "need_va_copy"
5294 From need_va_copy.U:
5295 This symbol, if defined, indicates that the system stores the vari‐
5297 able argument list datatype, va_list, in a format that cannot be
5298 copied by simple assignment, so that some other means must be used
5299 when copying is required. As such systems vary in their provision
5300 (or non-provision) of copying mechanisms, handy.h defines a plat‐
5301 form- "independent" macro, Perl_va_copy(src, dst), to do the job.
5302 "netdb_hlen_type"
5304 From netdbtype.U:
5305 This variable holds the type used for the 2nd argument to gethost‐
5307 byaddr(). Usually, this is int or size_t or unsigned. This is
5308 only useful if you have gethostbyaddr(), naturally.
5309 "netdb_host_type"
5311 From netdbtype.U:
5312 This variable holds the type used for the 1st argument to gethost‐
5314 byaddr(). Usually, this is char * or void *, possibly with or
5315 without a const prefix. This is only useful if you have gethost‐
5316 byaddr(), naturally.
5317 "netdb_name_type"
5319 From netdbtype.U:
5320 This variable holds the type used for the argument to gethostby‐
5322 name(). Usually, this is char * or const char *. This is only
5323 useful if you have gethostbyname(), naturally.
5324 "netdb_net_type"
5326 From netdbtype.U:
5327 This variable holds the type used for the 1st argument to getnet‐
5329 byaddr(). Usually, this is int or long. This is only useful if
5330 you have getnetbyaddr(), naturally.
5331 "nm"
5333 From Loc.U:
5334 This variable is used internally by Configure to determine the full
5336 pathname (if any) of the nm program. After Configure runs, the
5337 value is reset to a plain "nm" and is not useful.
5338 "nm_opt"
5340 From usenm.U:
5341 This variable holds the options that may be necessary for nm.
5343 "nm_so_opt"
5345 From usenm.U:
5346 This variable holds the options that may be necessary for nm to
5348 work on a shared library but that can not be used on an archive
5349 library. Currently, this is only used by Linux, where nm --dynamic
5350 is *required* to get symbols from an "ELF" library which has been
5351 stripped, but nm --dynamic is *fatal* on an archive library. Maybe
5352 Linux should just always set usenm=false.
5353 "nonxs_ext"
5355 From Extensions.U:
5356 This variable holds a list of all non-xs extensions included in the
5358 package. All of them will be built.
5359 "nroff"
5361 From Loc.U:
5362 This variable is used internally by Configure to determine the full
5364 pathname (if any) of the nroff program. After Configure runs, the
5365 value is reset to a plain "nroff" and is not useful.
5366 "nv_preserves_uv_bits"
5368 From perlxv.U:
5369 This variable indicates how many of bits type uvtype a variable
5371 nvtype can preserve.
5372 "nveformat"
5374 From perlxvf.U:
5375 This variable contains the format string used for printing a Perl
5377 "NV" using %e-ish floating point format.
5378 "nvEUformat"
5380 From perlxvf.U:
5381 This variable contains the format string used for printing a Perl
5383 "NV" using %E-ish floating point format.
5384 "nvfformat"
5386 From perlxvf.U:
5387 This variable confains the format string used for printing a Perl
5389 "NV" using %f-ish floating point format.
5390 "nvFUformat"
5392 From perlxvf.U:
5393 This variable confains the format string used for printing a Perl
5395 "NV" using %F-ish floating point format.
5396 "nvgformat"
5398 From perlxvf.U:
5399 This variable contains the format string used for printing a Perl
5401 "NV" using %g-ish floating point format.
5402 "nvGUformat"
5404 From perlxvf.U:
5405 This variable contains the format string used for printing a Perl
5407 "NV" using %G-ish floating point format.
5408 "nvsize"
5410 From perlxv.U:
5411 This variable is the size of an "NV" in bytes.
5413 "nvtype"
5415 From perlxv.U:
5416 This variable contains the C type used for Perl's "NV".
5418 o
5420 "o_nonblock"
5422 From nblock_io.U:
5423 This variable bears the symbol value to be used during open() or
5425 fcntl() to turn on non-blocking I/O for a file descriptor. If you
5426 wish to switch between blocking and non-blocking, you may try
5427 ioctl("FIOSNBIO") instead, but that is only supported by some
5428 devices.
5429 "obj_ext"
5431 From Unix.U:
5432 This is an old synonym for _o.
5434 "old_pthread_create_joinable"
5436 From d_pthrattrj.U:
5437 This variable defines the constant to use for creating joinable
5439 (aka undetached) pthreads. Unused if pthread.h defines
5440 "PTHREAD_CREATE_JOINABLE". If used, possible values are
5441 "PTHREAD_CREATE_UNDETACHED" and "__UNDETACHED".
5442 "optimize"
5444 From ccflags.U:
5445 This variable contains any optimizer/debugger flag that should be
5447 used. It is up to the Makefile to use it.
5448 "orderlib"
5450 From orderlib.U:
5451 This variable is "true" if the components of libraries must be
5453 ordered (with `lorder $* ⎪ tsort`) before placing them in an ar‐
5454 chive. Set to "false" if ranlib or ar can generate random
5455 libraries.
5456 "osname"
5458 From Oldconfig.U:
5459 This variable contains the operating system name (e.g. sunos,
5461 solaris, hpux, etc.). It can be useful later on for setting
5462 defaults. Any spaces are replaced with underscores. It is set to
5463 a null string if we can't figure it out.
5464 "osvers"
5466 From Oldconfig.U:
5467 This variable contains the operating system version (e.g. 4.1.3,
5469 5.2, etc.). It is primarily used for helping select an appropriate
5470 hints file, but might be useful elsewhere for setting defaults. It
5471 is set to '' if we can't figure it out. We try to be flexible
5472 about how much of the version number to keep, e.g. if 4.1.1, 4.1.2,
5473 and 4.1.3 are essentially the same for this package, hints files
5474 might just be os_4.0 or os_4.1, etc., not keeping separate files
5475 for each little release.
5476 "otherlibdirs"
5478 From otherlibdirs.U:
5479 This variable contains a colon-separated set of paths for the perl
5481 binary to search for additional library files or modules. These
5482 directories will be tacked to the end of @"INC". Perl will auto‐
5483 matically search below each path for version- and architecture-spe‐
5484 cific directories. See inc_version_list for more details. A value
5485 of " " means "none" and is used to preserve this value for the next
5486 run through Configure.
5487 p
5489 "package"
5491 From package.U:
5492 This variable contains the name of the package being constructed.
5494 It is primarily intended for the use of later Configure units.
5495 "pager"
5497 From pager.U:
5498 This variable contains the name of the preferred pager on the sys‐
5500 tem. Usual values are (the full pathnames of) more, less, pg, or
5501 cat.
5502 "passcat"
5504 From nis.U:
5505 This variable contains a command that produces the text of the
5507 /etc/passwd file. This is normally "cat /etc/passwd", but can be
5508 "ypcat passwd" when "NIS" is used. On some systems, such as os390,
5509 there may be no equivalent command, in which case this variable is
5510 unset.
5511 "patchlevel"
5513 From patchlevel.U:
5514 The patchlevel level of this package. The value of patchlevel
5516 comes from the patchlevel.h file. In a version number such as
5517 5.6.1, this is the 6. In patchlevel.h, this is referred to as
5518 "PERL_VERSION".
5519 "path_sep"
5521 From Unix.U:
5522 This is an old synonym for p_ in Head.U, the character used to sep‐
5524 arate elements in the command shell search "PATH".
5525 "perl5"
5527 From perl5.U:
5528 This variable contains the full path (if any) to a previously
5530 installed perl5.005 or later suitable for running the script to
5531 determine inc_version_list.
5532 "perl"
5534 From Loc.U:
5535 This variable is defined but not used by Configure. The value is a
5537 plain '' and is not useful.
5538 "perl_patchlevel"
5540 From patchlevel.U:
5541 This is the Perl patch level, a numeric change identifier, as
5543 defined by whichever source code maintenance system is used to
5544 maintain the patches; currently Perforce. It does not correlate
5545 with the Perl version numbers or the maintenance versus development
5546 dichotomy except by also being increasing.
5547 P
5549 "PERL_REVISION"
5551 From Oldsyms.U:
5552 In a Perl version number such as 5.6.2, this is the 5. This value
5554 is manually set in patchlevel.h
5555 "PERL_SUBVERSION"
5557 From Oldsyms.U:
5558 In a Perl version number such as 5.6.2, this is the 2. Values
5560 greater than 50 represent potentially unstable development subver‐
5561 sions. This value is manually set in patchlevel.h
5562 "PERL_VERSION"
5564 From Oldsyms.U:
5565 In a Perl version number such as 5.6.2, this is the 6. This value
5567 is manually set in patchlevel.h
5568 "perladmin"
5570 From perladmin.U:
5571 Electronic mail address of the perl5 administrator.
5573 "perllibs"
5575 From End.U:
5576 The list of libraries needed by Perl only (any libraries needed by
5578 extensions only will by dropped, if using dynamic loading).
5579 "perlpath"
5581 From perlpath.U:
5582 This variable contains the eventual value of the "PERLPATH" symbol,
5584 which contains the name of the perl interpreter to be used in shell
5585 scripts and in the "eval "exec"" idiom. This variable is not nec‐
5586 essarily the pathname of the file containing the perl interpreter;
5587 you must append the executable extension (_exe) if it is not
5588 already present. Note that Perl code that runs during the Perl
5589 build process cannot reference this variable, as Perl may not have
5590 been installed, or even if installed, may be a different version of
5591 Perl.
5592 "pg"
5594 From Loc.U:
5595 This variable is used internally by Configure to determine the full
5597 pathname (if any) of the pg program. After Configure runs, the
5598 value is reset to a plain "pg" and is not useful.
5599 "phostname"
5601 From myhostname.U:
5602 This variable contains the eventual value of the "PHOSTNAME" sym‐
5604 bol, which is a command that can be fed to popen() to get the host
5605 name. The program should probably not presume that the domain is
5606 or isn't there already.
5607 "pidtype"
5609 From pidtype.U:
5610 This variable defines "PIDTYPE" to be something like pid_t, int,
5612 ushort, or whatever type is used to declare process ids in the ker‐
5613 nel.
5614 "plibpth"
5616 From libpth.U:
5617 Holds the private path used by Configure to find out the libraries.
5619 Its value is prepend to libpth. This variable takes care of special
5620 machines, like the mips. Usually, it should be empty.
5621 "pmake"
5623 From Loc.U:
5624 This variable is defined but not used by Configure. The value is a
5626 plain '' and is not useful.
5627 "pr"
5629 From Loc.U:
5630 This variable is defined but not used by Configure. The value is a
5632 plain '' and is not useful.
5633 "prefix"
5635 From prefix.U:
5636 This variable holds the name of the directory below which the user
5638 will install the package. Usually, this is /usr/local, and exe‐
5639 cutables go in /usr/local/bin, library stuff in /usr/local/lib, man
5640 pages in /usr/local/man, etc. It is only used to set defaults for
5641 things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
5642 "prefixexp"
5644 From prefix.U:
5645 This variable holds the full absolute path of the directory below
5647 which the user will install the package. Derived from prefix.
5648 "privlib"
5650 From privlib.U:
5651 This variable contains the eventual value of the "PRIVLIB" symbol,
5653 which is the name of the private library for this package. It may
5654 have a ~ on the front. It is up to the makefile to eventually cre‐
5655 ate this directory while performing installation (with ~ substitu‐
5656 tion).
5657 "privlibexp"
5659 From privlib.U:
5660 This variable is the ~name expanded version of privlib, so that you
5662 may use it directly in Makefiles or shell scripts.
5663 "procselfexe"
5665 From d_procselfexe.U:
5666 If d_procselfexe is defined, $procselfexe is the filename of the
5668 symbolic link pointing to the absolute pathname of the executing
5669 program.
5670 "prototype"
5672 From prototype.U:
5673 This variable holds the eventual value of "CAN_PROTOTYPE", which
5675 indicates the C compiler can handle funciton prototypes.
5676 "ptrsize"
5678 From ptrsize.U:
5679 This variable contains the value of the "PTRSIZE" symbol, which
5681 indicates to the C program how many bytes there are in a pointer.
5682 q
5684 "quadkind"
5686 From quadtype.U:
5687 This variable, if defined, encodes the type of a quad: 1 = int, 2 =
5689 long, 3 = long long, 4 = int64_t.
5690 "quadtype"
5692 From quadtype.U:
5693 This variable defines Quad_t to be something like long, int, long
5695 long, int64_t, or whatever type is used for 64-bit integers.
5696 r
5698 "randbits"
5700 From randfunc.U:
5701 Indicates how many bits are produced by the function used to gener‐
5703 ate normalized random numbers.
5704 "randfunc"
5706 From randfunc.U:
5707 Indicates the name of the random number function to use. Values
5709 include drand48, random, and rand. In C programs, the "Drand01"
5710 macro is defined to generate uniformly distributed random numbers
5711 over the range [0., 1.[ (see drand01 and nrand).
5712 "random_r_proto"
5714 From d_random_r.U:
5715 This variable encodes the prototype of random_r. It is zero if
5717 d_random_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
5718 of reentr.h if d_random_r is defined.
5719 "randseedtype"
5721 From randfunc.U:
5722 Indicates the type of the argument of the seedfunc.
5724 "ranlib"
5726 From orderlib.U:
5727 This variable is set to the pathname of the ranlib program, if it
5729 is needed to generate random libraries. Set to ":" if ar can gen‐
5730 erate random libraries or if random libraries are not supported
5731 "rd_nodata"
5733 From nblock_io.U:
5734 This variable holds the return code from read() when no data is
5736 present. It should be -1, but some systems return 0 when "O_NDELAY"
5737 is used, which is a shame because you cannot make the difference
5738 between no data and an EOF.. Sigh!
5739 "readdir64_r_proto"
5741 From d_readdir64_r.U:
5742 This variable encodes the prototype of readdir64_r. It is zero if
5744 d_readdir64_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5745 macros of reentr.h if d_readdir64_r is defined.
5746 "readdir_r_proto"
5748 From d_readdir_r.U:
5749 This variable encodes the prototype of readdir_r. It is zero if
5751 d_readdir_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
5752 of reentr.h if d_readdir_r is defined.
5753 "revision"
5755 From patchlevel.U:
5756 The value of revision comes from the patchlevel.h file. In a ver‐
5758 sion number such as 5.6.1, this is the 5. In patchlevel.h, this is
5759 referred to as "PERL_REVISION".
5760 "rm"
5762 From Loc.U:
5763 This variable is used internally by Configure to determine the full
5765 pathname (if any) of the rm program. After Configure runs, the
5766 value is reset to a plain "rm" and is not useful.
5767 "rmail"
5769 From Loc.U:
5770 This variable is defined but not used by Configure. The value is a
5772 plain '' and is not useful.
5773 "run"
5775 From Cross.U:
5776 This variable contains the command used by Configure to copy and
5778 execute a cross-compiled executable in the target host. Useful and
5779 available only during Perl build. Empty string '' if not
5780 cross-compiling.
5781 "runnm"
5783 From usenm.U:
5784 This variable contains "true" or "false" depending whether the nm
5786 extraction should be performed or not, according to the value of
5787 usenm and the flags on the Configure command line.
5788 s
5790 "sched_yield"
5792 From d_pthread_y.U:
5793 This variable defines the way to yield the execution of the current
5795 thread.
5796 "scriptdir"
5798 From scriptdir.U:
5799 This variable holds the name of the directory in which the user
5801 wants to put publicly scripts for the package in question. It is
5802 either the same directory as for binaries, or a special one that
5803 can be mounted across different architectures, like /usr/share.
5804 Programs must be prepared to deal with ~name expansion.
5805 "scriptdirexp"
5807 From scriptdir.U:
5808 This variable is the same as scriptdir, but is filename expanded at
5810 configuration time, for programs not wanting to bother with it.
5811 "sed"
5813 From Loc.U:
5814 This variable is used internally by Configure to determine the full
5816 pathname (if any) of the sed program. After Configure runs, the
5817 value is reset to a plain "sed" and is not useful.
5818 "seedfunc"
5820 From randfunc.U:
5821 Indicates the random number generating seed function. Values
5823 include srand48, srandom, and srand.
5824 "selectminbits"
5826 From selectminbits.U:
5827 This variable holds the minimum number of bits operated by select.
5829 That is, if you do select(n, ...), how many bits at least will be
5830 cleared in the masks if some activity is detected. Usually this is
5831 either n or 32*ceil(n/32), especially many little-endians do the
5832 latter. This is only useful if you have select(), naturally.
5833 "selecttype"
5835 From selecttype.U:
5836 This variable holds the type used for the 2nd, 3rd, and 4th argu‐
5838 ments to select. Usually, this is "fd_set *", if "HAS_FD_SET" is
5839 defined, and "int *" otherwise. This is only useful if you have
5840 select(), naturally.
5841 "sendmail"
5843 From Loc.U:
5844 This variable is defined but not used by Configure. The value is a
5846 plain '' and is not useful.
5847 "setgrent_r_proto"
5849 From d_setgrent_r.U:
5850 This variable encodes the prototype of setgrent_r. It is zero if
5852 d_setgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5853 macros of reentr.h if d_setgrent_r is defined.
5854 "sethostent_r_proto"
5856 From d_sethostent_r.U:
5857 This variable encodes the prototype of sethostent_r. It is zero if
5859 d_sethostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5860 macros of reentr.h if d_sethostent_r is defined.
5861 "setlocale_r_proto"
5863 From d_setlocale_r.U:
5864 This variable encodes the prototype of setlocale_r. It is zero if
5866 d_setlocale_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5867 macros of reentr.h if d_setlocale_r is defined.
5868 "setnetent_r_proto"
5870 From d_setnetent_r.U:
5871 This variable encodes the prototype of setnetent_r. It is zero if
5873 d_setnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5874 macros of reentr.h if d_setnetent_r is defined.
5875 "setprotoent_r_proto"
5877 From d_setprotoent_r.U:
5878 This variable encodes the prototype of setprotoent_r. It is zero
5880 if d_setprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5881 macros of reentr.h if d_setprotoent_r is defined.
5882 "setpwent_r_proto"
5884 From d_setpwent_r.U:
5885 This variable encodes the prototype of setpwent_r. It is zero if
5887 d_setpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5888 macros of reentr.h if d_setpwent_r is defined.
5889 "setservent_r_proto"
5891 From d_setservent_r.U:
5892 This variable encodes the prototype of setservent_r. It is zero if
5894 d_setservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5895 macros of reentr.h if d_setservent_r is defined.
5896 "sh"
5898 From sh.U:
5899 This variable contains the full pathname of the shell used on this
5901 system to execute Bourne shell scripts. Usually, this will be
5902 /bin/sh, though it's possible that some systems will have /bin/ksh,
5903 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
5904 D:/bin/sh.exe. This unit comes before Options.U, so you can't set
5905 sh with a "-D" option, though you can override this (and startsh)
5906 with "-O -Dsh=/bin/whatever -Dstartsh=whatever"
5907 "shar"
5909 From Loc.U:
5910 This variable is defined but not used by Configure. The value is a
5912 plain '' and is not useful.
5913 "sharpbang"
5915 From spitshell.U:
5916 This variable contains the string #! if this system supports that
5918 construct.
5919 "shmattype"
5921 From d_shmat.U:
5922 This symbol contains the type of pointer returned by shmat(). It
5924 can be "void *" or "char *".
5925 "shortsize"
5927 From intsize.U:
5928 This variable contains the value of the "SHORTSIZE" symbol which
5930 indicates to the C program how many bytes there are in a short.
5931 "shrpenv"
5933 From libperl.U:
5934 If the user builds a shared libperl.so, then we need to tell the
5936 "perl" executable where it will be able to find the installed
5937 libperl.so. One way to do this on some systems is to set the envi‐
5938 ronment variable "LD_RUN_PATH" to the directory that will be the
5939 final location of the shared libperl.so. The makefile can use this
5940 with something like $shrpenv $("CC") -o perl perlmain.o $libperl
5941 $libs Typical values are shrpenv="env "LD_RUN_PATH"=$archlib‐
5942 exp/"CORE"" or shrpenv='' See the main perl Makefile.SH for actual
5943 working usage. Alternatively, we might be able to use a command
5944 line option such as -R $archlibexp/"CORE" (Solaris) or -Wl,-rpath
5945 $archlibexp/"CORE" (Linux).
5946 "shsharp"
5948 From spitshell.U:
5949 This variable tells further Configure units whether your sh can
5951 handle # comments.
5952 "sig_count"
5954 From sig_name.U:
5955 This variable holds a number larger than the largest valid signal
5957 number. This is usually the same as the "NSIG" macro.
5958 "sig_name"
5960 From sig_name.U:
5961 This variable holds the signal names, space separated. The leading
5963 "SIG" in signal name is removed. A "ZERO" is prepended to the
5964 list. This is currently not used, sig_name_init is used instead.
5965 "sig_name_init"
5967 From sig_name.U:
5968 This variable holds the signal names, enclosed in double quotes and
5970 separated by commas, suitable for use in the "SIG_NAME" definition
5971 below. A "ZERO" is prepended to the list, and the list is termi‐
5972 nated with a plain 0. The leading "SIG" in signal names is
5973 removed. See sig_num.
5974 "sig_num"
5976 From sig_name.U:
5977 This variable holds the signal numbers, space separated. A "ZERO"
5979 is prepended to the list (corresponding to the fake "SIGZERO").
5980 Those numbers correspond to the value of the signal listed in the
5981 same place within the sig_name list. This is currently not used,
5982 sig_num_init is used instead.
5983 "sig_num_init"
5985 From sig_name.U:
5986 This variable holds the signal numbers, enclosed in double quotes
5988 and separated by commas, suitable for use in the "SIG_NUM" defini‐
5989 tion below. A "ZERO" is prepended to the list, and the list is
5990 terminated with a plain 0.
5991 "sig_size"
5993 From sig_name.U:
5994 This variable contains the number of elements of the sig_name and
5996 sig_num arrays.
5997 "signal_t"
5999 From d_voidsig.U:
6000 This variable holds the type of the signal handler (void or int).
6002 "sitearch"
6004 From sitearch.U:
6005 This variable contains the eventual value of the "SITEARCH" symbol,
6007 which is the name of the private library for this package. It may
6008 have a ~ on the front. It is up to the makefile to eventually cre‐
6009 ate this directory while performing installation (with ~ substitu‐
6010 tion). The standard distribution will put nothing in this direc‐
6011 tory. After perl has been installed, users may install their own
6012 local architecture-dependent modules in this directory with Make‐
6013 Maker Makefile.PL or equivalent. See "INSTALL" for details.
6014 "sitearchexp"
6016 From sitearch.U:
6017 This variable is the ~name expanded version of sitearch, so that
6019 you may use it directly in Makefiles or shell scripts.
6020 "sitebin"
6022 From sitebin.U:
6023 This variable holds the name of the directory in which the user
6025 wants to put add-on publicly executable files for the package in
6026 question. It is most often a local directory such as
6027 /usr/local/bin. Programs using this variable must be prepared to
6028 deal with ~name substitution. The standard distribution will put
6029 nothing in this directory. After perl has been installed, users
6030 may install their own local executables in this directory with
6031 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
6032 "sitebinexp"
6034 From sitebin.U:
6035 This is the same as the sitebin variable, but is filename expanded
6037 at configuration time, for use in your makefiles.
6038 "sitehtml1dir"
6040 From sitehtml1dir.U:
6041 This variable contains the name of the directory in which site-spe‐
6043 cific html source pages are to be put. It is the responsibility of
6044 the Makefile.SH to get the value of this into the proper command.
6045 You must be prepared to do the ~name expansion yourself. The stan‐
6046 dard distribution will put nothing in this directory. After perl
6047 has been installed, users may install their own local html pages in
6048 this directory with MakeMaker Makefile.PL or equivalent. See
6049 "INSTALL" for details.
6050 "sitehtml1direxp"
6052 From sitehtml1dir.U:
6053 This variable is the same as the sitehtml1dir variable, but is
6055 filename expanded at configuration time, for convenient use in
6056 makefiles.
6057 "sitehtml3dir"
6059 From sitehtml3dir.U:
6060 This variable contains the name of the directory in which site-spe‐
6062 cific library html source pages are to be put. It is the responsi‐
6063 bility of the Makefile.SH to get the value of this into the proper
6064 command. You must be prepared to do the ~name expansion yourself.
6065 The standard distribution will put nothing in this directory.
6066 After perl has been installed, users may install their own local
6067 library html pages in this directory with MakeMaker Makefile.PL or
6068 equivalent. See "INSTALL" for details.
6069 "sitehtml3direxp"
6071 From sitehtml3dir.U:
6072 This variable is the same as the sitehtml3dir variable, but is
6074 filename expanded at configuration time, for convenient use in
6075 makefiles.
6076 "sitelib"
6078 From sitelib.U:
6079 This variable contains the eventual value of the "SITELIB" symbol,
6081 which is the name of the private library for this package. It may
6082 have a ~ on the front. It is up to the makefile to eventually cre‐
6083 ate this directory while performing installation (with ~ substitu‐
6084 tion). The standard distribution will put nothing in this direc‐
6085 tory. After perl has been installed, users may install their own
6086 local architecture-independent modules in this directory with Make‐
6087 Maker Makefile.PL or equivalent. See "INSTALL" for details.
6088 "sitelib_stem"
6090 From sitelib.U:
6091 This variable is $sitelibexp with any trailing version-specific
6093 component removed. The elements in inc_version_list (inc_ver‐
6094 sion_list.U) can be tacked onto this variable to generate a list of
6095 directories to search.
6096 "sitelibexp"
6098 From sitelib.U:
6099 This variable is the ~name expanded version of sitelib, so that you
6101 may use it directly in Makefiles or shell scripts.
6102 "siteman1dir"
6104 From siteman1dir.U:
6105 This variable contains the name of the directory in which site-spe‐
6107 cific manual source pages are to be put. It is the responsibility
6108 of the Makefile.SH to get the value of this into the proper com‐
6109 mand. You must be prepared to do the ~name expansion yourself.
6110 The standard distribution will put nothing in this directory.
6111 After perl has been installed, users may install their own local
6112 man1 pages in this directory with MakeMaker Makefile.PL or equiva‐
6113 lent. See "INSTALL" for details.
6114 "siteman1direxp"
6116 From siteman1dir.U:
6117 This variable is the same as the siteman1dir variable, but is file‐
6119 name expanded at configuration time, for convenient use in make‐
6120 files.
6121 "siteman3dir"
6123 From siteman3dir.U:
6124 This variable contains the name of the directory in which site-spe‐
6126 cific library man source pages are to be put. It is the responsi‐
6127 bility of the Makefile.SH to get the value of this into the proper
6128 command. You must be prepared to do the ~name expansion yourself.
6129 The standard distribution will put nothing in this directory.
6130 After perl has been installed, users may install their own local
6131 man3 pages in this directory with MakeMaker Makefile.PL or equiva‐
6132 lent. See "INSTALL" for details.
6133 "siteman3direxp"
6135 From siteman3dir.U:
6136 This variable is the same as the siteman3dir variable, but is file‐
6138 name expanded at configuration time, for convenient use in make‐
6139 files.
6140 "siteprefix"
6142 From siteprefix.U:
6143 This variable holds the full absolute path of the directory below
6145 which the user will install add-on packages. See "INSTALL" for
6146 usage and examples.
6147 "siteprefixexp"
6149 From siteprefix.U:
6150 This variable holds the full absolute path of the directory below
6152 which the user will install add-on packages. Derived from sitepre‐
6153 fix.
6154 "sitescript"
6156 From sitescript.U:
6157 This variable holds the name of the directory in which the user
6159 wants to put add-on publicly executable files for the package in
6160 question. It is most often a local directory such as
6161 /usr/local/bin. Programs using this variable must be prepared to
6162 deal with ~name substitution. The standard distribution will put
6163 nothing in this directory. After perl has been installed, users
6164 may install their own local scripts in this directory with Make‐
6165 Maker Makefile.PL or equivalent. See "INSTALL" for details.
6166 "sitescriptexp"
6168 From sitescript.U:
6169 This is the same as the sitescript variable, but is filename
6171 expanded at configuration time, for use in your makefiles.
6172 "sizesize"
6174 From sizesize.U:
6175 This variable contains the size of a sizetype in bytes.
6177 "sizetype"
6179 From sizetype.U:
6180 This variable defines sizetype to be something like size_t,
6182 unsigned long, or whatever type is used to declare length parame‐
6183 ters for string functions.
6184 "sleep"
6186 From Loc.U:
6187 This variable is defined but not used by Configure. The value is a
6189 plain '' and is not useful.
6190 "smail"
6192 From Loc.U:
6193 This variable is defined but not used by Configure. The value is a
6195 plain '' and is not useful.
6196 "so"
6198 From so.U:
6199 This variable holds the extension used to identify shared libraries
6201 (also known as shared objects) on the system. Usually set to "so".
6202 "sockethdr"
6204 From d_socket.U:
6205 This variable has any cpp "-I" flags needed for socket support.
6207 "socketlib"
6209 From d_socket.U:
6210 This variable has the names of any libraries needed for socket sup‐
6212 port.
6213 "socksizetype"
6215 From socksizetype.U:
6216 This variable holds the type used for the size argument for various
6218 socket calls like accept. Usual values include socklen_t, size_t,
6219 and int.
6220 "sort"
6222 From Loc.U:
6223 This variable is used internally by Configure to determine the full
6225 pathname (if any) of the sort program. After Configure runs, the
6226 value is reset to a plain "sort" and is not useful.
6227 "spackage"
6229 From package.U:
6230 This variable contains the name of the package being constructed,
6232 with the first letter uppercased, i.e. suitable for starting sen‐
6233 tences.
6234 "spitshell"
6236 From spitshell.U:
6237 This variable contains the command necessary to spit out a runnable
6239 shell on this system. It is either cat or a grep "-v" for # com‐
6240 ments.
6241 "sPRId64"
6243 From quadfio.U:
6244 This variable, if defined, contains the string used by stdio to
6246 format 64-bit decimal numbers (format "d") for output.
6247 "sPRIeldbl"
6249 From longdblfio.U:
6250 This variable, if defined, contains the string used by stdio to
6252 format long doubles (format "e") for output.
6253 "sPRIEUldbl"
6255 From longdblfio.U:
6256 This variable, if defined, contains the string used by stdio to
6258 format long doubles (format "E") for output. The "U" in the name
6259 is to separate this from sPRIeldbl so that even case-blind systems
6260 can see the difference.
6261 "sPRIfldbl"
6263 From longdblfio.U:
6264 This variable, if defined, contains the string used by stdio to
6266 format long doubles (format "f") for output.
6267 "sPRIFUldbl"
6269 From longdblfio.U:
6270 This variable, if defined, contains the string used by stdio to
6272 format long doubles (format "F") for output. The "U" in the name
6273 is to separate this from sPRIfldbl so that even case-blind systems
6274 can see the difference.
6275 "sPRIgldbl"
6277 From longdblfio.U:
6278 This variable, if defined, contains the string used by stdio to
6280 format long doubles (format "g") for output.
6281 "sPRIGUldbl"
6283 From longdblfio.U:
6284 This variable, if defined, contains the string used by stdio to
6286 format long doubles (format "G") for output. The "U" in the name
6287 is to separate this from sPRIgldbl so that even case-blind systems
6288 can see the difference.
6289 "sPRIi64"
6291 From quadfio.U:
6292 This variable, if defined, contains the string used by stdio to
6294 format 64-bit decimal numbers (format "i") for output.
6295 "sPRIo64"
6297 From quadfio.U:
6298 This variable, if defined, contains the string used by stdio to
6300 format 64-bit octal numbers (format "o") for output.
6301 "sPRIu64"
6303 From quadfio.U:
6304 This variable, if defined, contains the string used by stdio to
6306 format 64-bit unsigned decimal numbers (format "u") for output.
6307 "sPRIx64"
6309 From quadfio.U:
6310 This variable, if defined, contains the string used by stdio to
6312 format 64-bit hexadecimal numbers (format "x") for output.
6313 "sPRIXU64"
6315 From quadfio.U:
6316 This variable, if defined, contains the string used by stdio to
6318 format 64-bit hExADECimAl numbers (format "X") for output. The "U"
6319 in the name is to separate this from sPRIx64 so that even case-
6320 blind systems can see the difference.
6321 "srand48_r_proto"
6323 From d_srand48_r.U:
6324 This variable encodes the prototype of srand48_r. It is zero if
6326 d_srand48_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6327 of reentr.h if d_srand48_r is defined.
6328 "srandom_r_proto"
6330 From d_srandom_r.U:
6331 This variable encodes the prototype of srandom_r. It is zero if
6333 d_srandom_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6334 of reentr.h if d_srandom_r is defined.
6335 "src"
6337 From src.U:
6338 This variable holds the path to the package source. It is up to the
6340 Makefile to use this variable and set "VPATH" accordingly to find
6341 the sources remotely.
6342 "sSCNfldbl"
6344 From longdblfio.U:
6345 This variable, if defined, contains the string used by stdio to
6347 format long doubles (format "f") for input.
6348 "ssizetype"
6350 From ssizetype.U:
6351 This variable defines ssizetype to be something like ssize_t, long
6353 or int. It is used by functions that return a count of bytes or an
6354 error condition. It must be a signed type. We will pick a type
6355 such that sizeof(SSize_t) == sizeof(Size_t).
6356 "startperl"
6358 From startperl.U:
6359 This variable contains the string to put on the front of a perl
6361 script to make sure (hopefully) that it runs with perl and not some
6362 shell. Of course, that leading line must be followed by the classi‐
6363 cal perl idiom: eval 'exec perl -S $0 ${1+$@}' if $run‐
6364 ning_under_some_shell; to guarantee perl startup should the shell
6365 execute the script. Note that this magic incatation is not under‐
6366 stood by csh.
6367 "startsh"
6369 From startsh.U:
6370 This variable contains the string to put on the front of a shell
6372 script to make sure (hopefully) that it runs with sh and not some
6373 other shell.
6374 "static_ext"
6376 From Extensions.U:
6377 This variable holds a list of "XS" extension files we want to link
6379 statically into the package. It is used by Makefile.
6380 "stdchar"
6382 From stdchar.U:
6383 This variable conditionally defines "STDCHAR" to be the type of
6385 char used in stdio.h. It has the values "unsigned char" or "char".
6386 "stdio_base"
6388 From d_stdstdio.U:
6389 This variable defines how, given a "FILE" pointer, fp, to access
6391 the _base field (or equivalent) of stdio.h's "FILE" structure.
6392 This will be used to define the macro FILE_base(fp).
6393 "stdio_bufsiz"
6395 From d_stdstdio.U:
6396 This variable defines how, given a "FILE" pointer, fp, to determine
6398 the number of bytes store in the I/O buffer pointer to by the _base
6399 field (or equivalent) of stdio.h's "FILE" structure. This will be
6400 used to define the macro FILE_bufsiz(fp).
6401 "stdio_cnt"
6403 From d_stdstdio.U:
6404 This variable defines how, given a "FILE" pointer, fp, to access
6406 the _cnt field (or equivalent) of stdio.h's "FILE" structure. This
6407 will be used to define the macro FILE_cnt(fp).
6408 "stdio_filbuf"
6410 From d_stdstdio.U:
6411 This variable defines how, given a "FILE" pointer, fp, to tell
6413 stdio to refill its internal buffers (?). This will be used to
6414 define the macro FILE_filbuf(fp).
6415 "stdio_ptr"
6417 From d_stdstdio.U:
6418 This variable defines how, given a "FILE" pointer, fp, to access
6420 the _ptr field (or equivalent) of stdio.h's "FILE" structure. This
6421 will be used to define the macro FILE_ptr(fp).
6422 "stdio_stream_array"
6424 From stdio_streams.U:
6425 This variable tells the name of the array holding the stdio
6427 streams. Usual values include _iob, __iob, and __sF.
6428 "strerror_r_proto"
6430 From d_strerror_r.U:
6431 This variable encodes the prototype of strerror_r. It is zero if
6433 d_strerror_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6434 macros of reentr.h if d_strerror_r is defined.
6435 "strings"
6437 From i_string.U:
6438 This variable holds the full path of the string header that will be
6440 used. Typically /usr/include/string.h or /usr/include/strings.h.
6441 "submit"
6443 From Loc.U:
6444 This variable is defined but not used by Configure. The value is a
6446 plain '' and is not useful.
6447 "subversion"
6449 From patchlevel.U:
6450 The subversion level of this package. The value of subversion
6452 comes from the patchlevel.h file. In a version number such as
6453 5.6.1, this is the 1. In patchlevel.h, this is referred to as
6454 "PERL_SUBVERSION". This is unique to perl.
6455 "sysman"
6457 From sysman.U:
6458 This variable holds the place where the manual is located on this
6460 system. It is not the place where the user wants to put his manual
6461 pages. Rather it is the place where Configure may look to find man‐
6462 ual for unix commands (section 1 of the manual usually). See man‐
6463 src.
6464 t
6466 "tail"
6468 From Loc.U:
6469 This variable is defined but not used by Configure. The value is a
6471 plain '' and is not useful.
6472 "tar"
6474 From Loc.U:
6475 This variable is defined but not used by Configure. The value is a
6477 plain '' and is not useful.
6478 "targetarch"
6480 From Cross.U:
6481 If cross-compiling, this variable contains the target architecture.
6483 If not, this will be empty.
6484 "tbl"
6486 From Loc.U:
6487 This variable is defined but not used by Configure. The value is a
6489 plain '' and is not useful.
6490 "tee"
6492 From Loc.U:
6493 This variable is defined but not used by Configure. The value is a
6495 plain '' and is not useful.
6496 "test"
6498 From Loc.U:
6499 This variable is used internally by Configure to determine the full
6501 pathname (if any) of the test program. After Configure runs, the
6502 value is reset to a plain "test" and is not useful.
6503 "timeincl"
6505 From i_time.U:
6506 This variable holds the full path of the included time header(s).
6508 "timetype"
6510 From d_time.U:
6511 This variable holds the type returned by time(). It can be long, or
6513 time_t on "BSD" sites (in which case <sys/types.h> should be
6514 included). Anyway, the type Time_t should be used.
6515 "tmpnam_r_proto"
6517 From d_tmpnam_r.U:
6518 This variable encodes the prototype of tmpnam_r. It is zero if
6520 d_tmpnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6521 of reentr.h if d_tmpnam_r is defined.
6522 "to"
6524 From Cross.U:
6525 This variable contains the command used by Configure to copy to
6527 from the target host. Useful and available only during Perl build.
6528 The string ":" if not cross-compiling.
6529 "touch"
6531 From Loc.U:
6532 This variable is used internally by Configure to determine the full
6534 pathname (if any) of the touch program. After Configure runs, the
6535 value is reset to a plain "touch" and is not useful.
6536 "tr"
6538 From Loc.U:
6539 This variable is used internally by Configure to determine the full
6541 pathname (if any) of the tr program. After Configure runs, the
6542 value is reset to a plain "tr" and is not useful.
6543 "trnl"
6545 From trnl.U:
6546 This variable contains the value to be passed to the tr(1) command
6548 to transliterate a newline. Typical values are "\012" and "\n".
6549 This is needed for "EBCDIC" systems where newline is not necessar‐
6550 ily "\012".
6551 "troff"
6553 From Loc.U:
6554 This variable is defined but not used by Configure. The value is a
6556 plain '' and is not useful.
6557 "ttyname_r_proto"
6559 From d_ttyname_r.U:
6560 This variable encodes the prototype of ttyname_r. It is zero if
6562 d_ttyname_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6563 of reentr.h if d_ttyname_r is defined.
6564 u
6566 "u16size"
6568 From perlxv.U:
6569 This variable is the size of an U16 in bytes.
6571 "u16type"
6573 From perlxv.U:
6574 This variable contains the C type used for Perl's U16.
6576 "u32size"
6578 From perlxv.U:
6579 This variable is the size of an U32 in bytes.
6581 "u32type"
6583 From perlxv.U:
6584 This variable contains the C type used for Perl's U32.
6586 "u64size"
6588 From perlxv.U:
6589 This variable is the size of an U64 in bytes.
6591 "u64type"
6593 From perlxv.U:
6594 This variable contains the C type used for Perl's U64.
6596 "u8size"
6598 From perlxv.U:
6599 This variable is the size of an U8 in bytes.
6601 "u8type"
6603 From perlxv.U:
6604 This variable contains the C type used for Perl's U8.
6606 "uidformat"
6608 From uidf.U:
6609 This variable contains the format string used for printing a Uid_t.
6611 "uidsign"
6613 From uidsign.U:
6614 This variable contains the signedness of a uidtype. 1 for
6616 unsigned, -1 for signed.
6617 "uidsize"
6619 From uidsize.U:
6620 This variable contains the size of a uidtype in bytes.
6622 "uidtype"
6624 From uidtype.U:
6625 This variable defines Uid_t to be something like uid_t, int,
6627 ushort, or whatever type is used to declare user ids in the kernel.
6628 "uname"
6630 From Loc.U:
6631 This variable is used internally by Configure to determine the full
6633 pathname (if any) of the uname program. After Configure runs, the
6634 value is reset to a plain "uname" and is not useful.
6635 "uniq"
6637 From Loc.U:
6638 This variable is used internally by Configure to determine the full
6640 pathname (if any) of the uniq program. After Configure runs, the
6641 value is reset to a plain "uniq" and is not useful.
6642 "uquadtype"
6644 From quadtype.U:
6645 This variable defines Uquad_t to be something like unsigned long,
6647 unsigned int, unsigned long long, uint64_t, or whatever type is
6648 used for 64-bit integers.
6649 "use5005threads"
6651 From usethreads.U:
6652 This variable conditionally defines the USE_5005THREADS symbol, and
6654 indicates that Perl should be built to use the 5.005-based thread‐
6655 ing implementation.
6656 "use64bitall"
6658 From use64bits.U:
6659 This variable conditionally defines the USE_64_BIT_ALL symbol, and
6661 indicates that 64-bit integer types should be used when available.
6662 The maximal possible 64-bitness is employed: LP64 or ILP64, meaning
6663 that you will be able to use more than 2 gigabytes of memory. This
6664 mode is even more binary incompatible than USE_64_BIT_INT. You may
6665 not be able to run the resulting executable in a 32-bit "CPU" at
6666 all or you may need at least to reboot your "OS" to 64-bit mode.
6667 "use64bitint"
6669 From use64bits.U:
6670 This variable conditionally defines the USE_64_BIT_INT symbol, and
6672 indicates that 64-bit integer types should be used when available.
6673 The minimal possible 64-bitness is employed, just enough to get
6674 64-bit integers into Perl. This may mean using for example "long
6675 longs", while your memory may still be limited to 2 gigabytes.
6676 "usecrosscompile"
6678 From Cross.U:
6679 This variable conditionally defines the "USE_CROSS_COMPILE" symbol,
6681 and indicates that Perl has been cross-compiled.
6682 "usedl"
6684 From dlsrc.U:
6685 This variable indicates if the system supports dynamic loading of
6687 some sort. See also dlsrc and dlobj.
6688 "usefaststdio"
6690 From usefaststdio.U:
6691 This variable conditionally defines the "USE_FAST_STDIO" symbol,
6693 and indicates that Perl should be built to use "fast stdio".
6694 Defaults to define in Perls 5.8 and earlier, to undef later.
6695 "useithreads"
6697 From usethreads.U:
6698 This variable conditionally defines the "USE_ITHREADS" symbol, and
6700 indicates that Perl should be built to use the interpreter-based
6701 threading implementation.
6702 "uselargefiles"
6704 From uselfs.U:
6705 This variable conditionally defines the "USE_LARGE_FILES" symbol,
6707 and indicates that large file interfaces should be used when avail‐
6708 able.
6709 "uselongdouble"
6711 From uselongdbl.U:
6712 This variable conditionally defines the "USE_LONG_DOUBLE" symbol,
6714 and indicates that long doubles should be used when available.
6715 "usemallocwrap"
6717 From mallocsrc.U:
6718 This variable contains y if we are wrapping malloc to prevent inte‐
6720 ger overflow during size calculations.
6721 "usemorebits"
6723 From usemorebits.U:
6724 This variable conditionally defines the "USE_MORE_BITS" symbol, and
6726 indicates that explicit 64-bit interfaces and long doubles should
6727 be used when available.
6728 "usemultiplicity"
6730 From usemultiplicity.U:
6731 This variable conditionally defines the "MULTIPLICITY" symbol, and
6733 indicates that Perl should be built to use multiplicity.
6734 "usemymalloc"
6736 From mallocsrc.U:
6737 This variable contains y if the malloc that comes with this package
6739 is desired over the system's version of malloc. People often
6740 include special versions of malloc for effiency, but such versions
6741 are often less portable. See also mallocsrc and mallocobj. If
6742 this is "y", then -lmalloc is removed from $libs.
6743 "usenm"
6745 From usenm.U:
6746 This variable contains "true" or "false" depending whether the nm
6748 extraction is wanted or not.
6749 "useopcode"
6751 From Extensions.U:
6752 This variable holds either "true" or "false" to indicate whether
6754 the Opcode extension should be used. The sole use for this cur‐
6755 rently is to allow an easy mechanism for users to skip the Opcode
6756 extension from the Configure command line.
6757 "useperlio"
6759 From useperlio.U:
6760 This variable conditionally defines the "USE_PERLIO" symbol, and
6762 indicates that the PerlIO abstraction should be used throughout.
6763 "useposix"
6765 From Extensions.U:
6766 This variable holds either "true" or "false" to indicate whether
6768 the "POSIX" extension should be used. The sole use for this cur‐
6769 rently is to allow an easy mechanism for hints files to indicate
6770 that "POSIX" will not compile on a particular system.
6771 "usereentrant"
6773 From usethreads.U:
6774 This variable conditionally defines the "USE_REENTRANT_API" symbol,
6776 which indicates that the thread code may try to use the various _r
6777 versions of library functions. This is only potentially meaningful
6778 if usethreads is set and is very experimental, it is not even
6779 prompted for.
6780 "usesfio"
6782 From d_sfio.U:
6783 This variable is set to true when the user agrees to use sfio. It
6785 is set to false when sfio is not available or when the user
6786 explicitely requests not to use sfio. It is here primarily so that
6787 command-line settings can override the auto-detection of d_sfio
6788 without running into a "WHOA THERE".
6789 "useshrplib"
6791 From libperl.U:
6792 This variable is set to "true" if the user wishes to build a shared
6794 libperl, and "false" otherwise.
6795 "usesocks"
6797 From usesocks.U:
6798 This variable conditionally defines the "USE_SOCKS" symbol, and
6800 indicates that Perl should be built to use "SOCKS".
6801 "usethreads"
6803 From usethreads.U:
6804 This variable conditionally defines the "USE_THREADS" symbol, and
6806 indicates that Perl should be built to use threads.
6807 "usevendorprefix"
6809 From vendorprefix.U:
6810 This variable tells whether the vendorprefix and consequently other
6812 vendor* paths are in use.
6813 "usevfork"
6815 From d_vfork.U:
6816 This variable is set to true when the user accepts to use vfork.
6818 It is set to false when no vfork is available or when the user
6819 explicitely requests not to use vfork.
6820 "usrinc"
6822 From usrinc.U:
6823 This variable holds the path of the include files, which is usually
6825 /usr/include. It is mainly used by other Configure units.
6826 "uuname"
6828 From Loc.U:
6829 This variable is defined but not used by Configure. The value is a
6831 plain '' and is not useful.
6832 "uvoformat"
6834 From perlxvf.U:
6835 This variable contains the format string used for printing a Perl
6837 "UV" as an unsigned octal integer.
6838 "uvsize"
6840 From perlxv.U:
6841 This variable is the size of a "UV" in bytes.
6843 "uvtype"
6845 From perlxv.U:
6846 This variable contains the C type used for Perl's "UV".
6848 "uvuformat"
6850 From perlxvf.U:
6851 This variable contains the format string used for printing a Perl
6853 "UV" as an unsigned decimal integer.
6854 "uvxformat"
6856 From perlxvf.U:
6857 This variable contains the format string used for printing a Perl
6859 "UV" as an unsigned hexadecimal integer in lowercase abcdef.
6860 "uvXUformat"
6862 From perlxvf.U:
6863 This variable contains the format string used for printing a Perl
6865 "UV" as an unsigned hexadecimal integer in uppercase "ABCDEF".
6866 v
6868 "vendorarch"
6870 From vendorarch.U:
6871 This variable contains the value of the "PERL_VENDORARCH" symbol.
6873 It may have a ~ on the front. The standard distribution will put
6874 nothing in this directory. Vendors who distribute perl may wish to
6875 place their own architecture-dependent modules and extensions in
6876 this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or
6877 equivalent. See "INSTALL" for details.
6878 "vendorarchexp"
6880 From vendorarch.U:
6881 This variable is the ~name expanded version of vendorarch, so that
6883 you may use it directly in Makefiles or shell scripts.
6884 "vendorbin"
6886 From vendorbin.U:
6887 This variable contains the eventual value of the "VENDORBIN" sym‐
6889 bol. It may have a ~ on the front. The standard distribution will
6890 put nothing in this directory. Vendors who distribute perl may
6891 wish to place additional binaries in this directory with MakeMaker
6892 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
6893 details.
6894 "vendorbinexp"
6896 From vendorbin.U:
6897 This variable is the ~name expanded version of vendorbin, so that
6899 you may use it directly in Makefiles or shell scripts.
6900 "vendorhtml1dir"
6902 From vendorhtml1dir.U:
6903 This variable contains the name of the directory for html pages.
6905 It may have a ~ on the front. The standard distribution will put
6906 nothing in this directory. Vendors who distribute perl may wish to
6907 place their own html pages in this directory with MakeMaker Make‐
6908 file.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
6909 details.
6910 "vendorhtml1direxp"
6912 From vendorhtml1dir.U:
6913 This variable is the ~name expanded version of vendorhtml1dir, so
6915 that you may use it directly in Makefiles or shell scripts.
6916 "vendorhtml3dir"
6918 From vendorhtml3dir.U:
6919 This variable contains the name of the directory for html library
6921 pages. It may have a ~ on the front. The standard distribution
6922 will put nothing in this directory. Vendors who distribute perl
6923 may wish to place their own html pages for modules and extensions
6924 in this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor
6925 or equivalent. See "INSTALL" for details.
6926 "vendorhtml3direxp"
6928 From vendorhtml3dir.U:
6929 This variable is the ~name expanded version of vendorhtml3dir, so
6931 that you may use it directly in Makefiles or shell scripts.
6932 "vendorlib"
6934 From vendorlib.U:
6935 This variable contains the eventual value of the "VENDORLIB" sym‐
6937 bol, which is the name of the private library for this package.
6938 The standard distribution will put nothing in this directory. Ven‐
6939 dors who distribute perl may wish to place their own modules in
6940 this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or
6941 equivalent. See "INSTALL" for details.
6942 "vendorlib_stem"
6944 From vendorlib.U:
6945 This variable is $vendorlibexp with any trailing version-specific
6947 component removed. The elements in inc_version_list (inc_ver‐
6948 sion_list.U) can be tacked onto this variable to generate a list of
6949 directories to search.
6950 "vendorlibexp"
6952 From vendorlib.U:
6953 This variable is the ~name expanded version of vendorlib, so that
6955 you may use it directly in Makefiles or shell scripts.
6956 "vendorman1dir"
6958 From vendorman1dir.U:
6959 This variable contains the name of the directory for man1 pages.
6961 It may have a ~ on the front. The standard distribution will put
6962 nothing in this directory. Vendors who distribute perl may wish to
6963 place their own man1 pages in this directory with MakeMaker Make‐
6964 file.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
6965 details.
6966 "vendorman1direxp"
6968 From vendorman1dir.U:
6969 This variable is the ~name expanded version of vendorman1dir, so
6971 that you may use it directly in Makefiles or shell scripts.
6972 "vendorman3dir"
6974 From vendorman3dir.U:
6975 This variable contains the name of the directory for man3 pages.
6977 It may have a ~ on the front. The standard distribution will put
6978 nothing in this directory. Vendors who distribute perl may wish to
6979 place their own man3 pages in this directory with MakeMaker Make‐
6980 file.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
6981 details.
6982 "vendorman3direxp"
6984 From vendorman3dir.U:
6985 This variable is the ~name expanded version of vendorman3dir, so
6987 that you may use it directly in Makefiles or shell scripts.
6988 "vendorprefix"
6990 From vendorprefix.U:
6991 This variable holds the full absolute path of the directory below
6993 which the vendor will install add-on packages. See "INSTALL" for
6994 usage and examples.
6995 "vendorprefixexp"
6997 From vendorprefix.U:
6998 This variable holds the full absolute path of the directory below
7000 which the vendor will install add-on packages. Derived from ven‐
7001 dorprefix.
7002 "vendorscript"
7004 From vendorscript.U:
7005 This variable contains the eventual value of the "VENDORSCRIPT"
7007 symbol. It may have a ~ on the front. The standard distribution
7008 will put nothing in this directory. Vendors who distribute perl
7009 may wish to place additional executable scripts in this directory
7010 with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or equivalent. See
7011 "INSTALL" for details.
7012 "vendorscriptexp"
7014 From vendorscript.U:
7015 This variable is the ~name expanded version of vendorscript, so
7017 that you may use it directly in Makefiles or shell scripts.
7018 "version"
7020 From patchlevel.U:
7021 The full version number of this package, such as 5.6.1 (or 5_6_1).
7023 This combines revision, patchlevel, and subversion to get the full
7024 version number, including any possible subversions. This is suit‐
7025 able for use as a directory name, and hence is filesystem depen‐
7026 dent.
7027 "version_patchlevel_string"
7029 From patchlevel.U:
7030 This is a string combining version, subversion and perl_patchlevel
7032 (if perl_patchlevel is non-zero). It is typically something like
7033 'version 7 subversion 1' or 'version 7 subversion 1 patchlevel
7034 11224' It is computed here to avoid duplication of code in mycon‐
7035 fig.SH and lib/Config.pm.
7036 "versiononly"
7038 From versiononly.U:
7039 If set, this symbol indicates that only the version-specific compo‐
7041 nents of a perl installation should be installed. This may be use‐
7042 ful for making a test installation of a new version without dis‐
7043 turbing the existing installation. Setting versiononly is equiva‐
7044 lent to setting installperl's -v option. In particular, the non-
7045 versioned scripts and programs such as a2p, c2ph, h2xs, pod2*, and
7046 perldoc are not installed (see "INSTALL" for a more complete list).
7047 Nor are the man pages installed. Usually, this is undef.
7048 "vi"
7050 From Loc.U:
7051 This variable is defined but not used by Configure. The value is a
7053 plain '' and is not useful.
7054 "voidflags"
7056 From voidflags.U:
7057 This variable contains the eventual value of the "VOIDFLAGS" sym‐
7059 bol, which indicates how much support of the void type is given by
7060 this compiler. See "VOIDFLAGS" for more info.
7061 x
7063 "xlibpth"
7065 From libpth.U:
7066 This variable holds extra path (space-separated) used to find
7068 libraries on this platform, for example "CPU"-specific libraries
7069 (on multi-"CPU" platforms) may be listed here.
7070 y
7072 "yacc"
7074 From yacc.U:
7075 This variable holds the name of the compiler compiler we want to
7077 use in the Makefile. It can be yacc, byacc, or bison -y.
7078 "yaccflags"
7080 From yacc.U:
7081 This variable contains any additional yacc flags desired by the
7083 user. It is up to the Makefile to use this.
7084 z
7086 "zcat"
7088 From Loc.U:
7089 This variable is defined but not used by Configure. The value is a
7091 plain '' and is not useful.
7092 "zip"
7094 From Loc.U:
7095 This variable is used internally by Configure to determine the full
7097 pathname (if any) of the zip program. After Configure runs, the
7098 value is reset to a plain "zip" and is not useful.
7099
7101 This module contains a good example of how to use tie to implement a
7102 cache and an example of how to make a tied variable readonly to those
7103 outside of it.
7104perl v5.8.8 2001-09-21 Config(3pm)