1Config(3pm) Perl Programmers Reference Guide Config(3pm)
2
6 Config - access Perl configuration information
7
9 use Config;
10 if ($Config{usethreads}) {
11 print "has thread support\n"
12 }
13 use Config qw(myconfig config_sh config_vars config_re);
15 print myconfig();
17 print config_sh();
19 print config_re();
21 config_vars(qw(osname archname));
23
25 The Config module contains all the information that was available to
26 the "Configure" program at Perl build time (over 900 values).
27 Shell variables from the config.sh file (written by Configure) are
29 stored in the readonly-variable %Config, indexed by their names.
30 Values stored in config.sh as 'undef' are returned as undefined values.
32 The perl "exists" function can be used to check if a named variable
33 exists.
34 For a description of the variables, please have a look at the Glossary
36 file, as written in the Porting folder, or use the url:
37 http://perl5.git.perl.org/perl.git/blob/HEAD:/Porting/Glossary
38 myconfig()
40 Returns a textual summary of the major perl configuration values.
41 See also "-V" in "Command Switches" in perlrun.
42 config_sh()
44 Returns the entire perl configuration information in the form of
45 the original config.sh shell variable assignment script.
46 config_re($regex)
48 Like config_sh() but returns, as a list, only the config entries
49 who's names match the $regex.
50 config_vars(@names)
52 Prints to STDOUT the values of the named configuration variable.
53 Each is printed on a separate line in the form:
54 name='value';
56 Names which are unknown are output as "name='UNKNOWN';". See also
58 "-V:name" in "Command Switches" in perlrun.
59 bincompat_options()
61 Returns a list of C pre-processor options used when compiling this
62 perl binary, which affect its binary compatibility with extensions.
63 "bincompat_options()" and "non_bincompat_options()" are shown
64 together in the output of "perl -V" as Compile-time options.
65 non_bincompat_options()
67 Returns a list of C pre-processor options used when compiling this
68 perl binary, which do not affect binary compatibility with
69 extensions.
70 compile_date()
72 Returns the compile date (as a string), equivalent to what is shown
73 by "perl -V"
74 local_patches()
76 Returns a list of the names of locally applied patches, equivalent
77 to what is shown by "perl -V".
78 header_files()
80 Returns a list of the header files that should be used as
81 dependencies for XS code, for this version of Perl on this
82 platform.
83
85 Here's a more sophisticated example of using %Config:
86 use Config;
88 use strict;
89 my %sig_num;
91 my @sig_name;
92 unless($Config{sig_name} && $Config{sig_num}) {
93 die "No sigs?";
94 } else {
95 my @names = split ' ', $Config{sig_name};
96 @sig_num{@names} = split ' ', $Config{sig_num};
97 foreach (@names) {
98 $sig_name[$sig_num{$_}] ||= $_;
99 }
100 }
101 print "signal #17 = $sig_name[17]\n";
103 if ($sig_num{ALRM}) {
104 print "SIGALRM is $sig_num{ALRM}\n";
105 }
106
108 Because this information is not stored within the perl executable
109 itself it is possible (but unlikely) that the information does not
110 relate to the actual perl binary which is being used to access it.
111 The Config module is installed into the architecture and version
113 specific library directory ($Config{installarchlib}) and it checks the
114 perl version number when loaded.
115 The values stored in config.sh may be either single-quoted or double-
117 quoted. Double-quoted strings are handy for those cases where you need
118 to include escape sequences in the strings. To avoid runtime variable
119 interpolation, any "$" and "@" characters are replaced by "\$" and
120 "\@", respectively. This isn't foolproof, of course, so don't embed
121 "\$" or "\@" in double-quoted strings unless you're willing to deal
122 with the consequences. (The slashes will end up escaped and the "$" or
123 "@" will trigger variable interpolation)
124
126 Most "Config" variables are determined by the "Configure" script on
127 platforms supported by it (which is most UNIX platforms). Some
128 platforms have custom-made "Config" variables, and may thus not have
129 some of the variables described below, or may have extraneous variables
130 specific to that particular port. See the port specific documentation
131 in such cases.
132 _
134 "_a"
135 From Unix.U:
136 This variable defines the extension used for ordinary library
138 files. For unix, it is .a. The . is included. Other possible
139 values include .lib.
140 "_exe"
142 From Unix.U:
143 This variable defines the extension used for executable files.
145 "DJGPP", Cygwin and OS/2 use .exe. Stratus "VOS" uses .pm. On
146 operating systems which do not require a specific extension for
147 executable files, this variable is empty.
148 "_o"
150 From Unix.U:
151 This variable defines the extension used for object files. For
153 unix, it is .o. The . is included. Other possible values include
154 .obj.
155 a
157 "afs"
158 From afs.U:
159 This variable is set to "true" if "AFS" (Andrew File System) is
161 used on the system, "false" otherwise. It is possible to override
162 this with a hint value or command line option, but you'd better
163 know what you are doing.
164 "afsroot"
166 From afs.U:
167 This variable is by default set to /afs. In the unlikely case this
169 is not the correct root, it is possible to override this with a
170 hint value or command line option. This will be used in subsequent
171 tests for AFSness in the configure and test process.
172 "alignbytes"
174 From alignbytes.U:
175 This variable holds the number of bytes required to align a
177 double-- or a long double when applicable. Usual values are 2, 4
178 and 8. The default is eight, for safety.
179 "ansi2knr"
181 From ansi2knr.U:
182 This variable is set if the user needs to run ansi2knr. Currently,
184 this is not supported, so we just abort.
185 "aphostname"
187 From d_gethname.U:
188 This variable contains the command which can be used to compute the
190 host name. The command is fully qualified by its absolute path, to
191 make it safe when used by a process with super-user privileges.
192 "api_revision"
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_revision
199 is the 5. Prior to 5.5.640, the format was a floating point
200 number, like 5.00563.
201 perl.c:incpush() and lib/lib.pm will automatically search in
203 $sitelib/.. for older directories back to the limit specified by
204 these api_ variables. This is only useful if you have a perl
205 library directory tree structured like the default one. See
206 "INSTALL" for how this works. The versioned site_perl directory
207 was introduced in 5.005, so that is the lowest possible value. The
208 version list appropriate for the current system is determined in
209 inc_version_list.U.
210 "XXX" To do: Since compatibility can depend on compile time
212 options (such as bincompat, longlong, etc.) it should (perhaps) be
213 set by Configure, but currently it isn't. Currently, we read a
214 hard-wired value from patchlevel.h. Perhaps what we ought to do is
215 take the hard-wired value from patchlevel.h but then modify it if
216 the current Configure options warrant. patchlevel.h then would use
217 an #ifdef guard.
218 "api_subversion"
220 From patchlevel.U:
221 The three variables, api_revision, api_version, and api_subversion,
223 specify the version of the oldest perl binary compatible with the
224 present perl. In a full version string such as 5.6.1,
225 api_subversion is the 1. See api_revision for full details.
226 "api_version"
228 From patchlevel.U:
229 The three variables, api_revision, api_version, and api_subversion,
231 specify the version of the oldest perl binary compatible with the
232 present perl. In a full version string such as 5.6.1, api_version
233 is the 6. See api_revision for full details. As a special case,
234 5.5.0 is rendered in the old-style as 5.005. (In the 5.005_0x
235 maintenance series, this was the only versioned directory in
236 $sitelib.)
237 "api_versionstring"
239 From patchlevel.U:
240 This variable combines api_revision, api_version, and
242 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable for
243 use as a directory name. This is filesystem dependent.
244 "ar"
246 From Loc.U:
247 This variable is used internally by Configure to determine the full
249 pathname (if any) of the ar program. After Configure runs, the
250 value is reset to a plain "ar" and is not useful.
251 "archlib"
253 From archlib.U:
254 This variable holds the name of the directory in which the user
256 wants to put architecture-dependent public library files for
257 $package. It is most often a local directory such as
258 /usr/local/lib. Programs using this variable must be prepared to
259 deal with filename expansion.
260 "archlibexp"
262 From archlib.U:
263 This variable is the same as the archlib variable, but is filename
265 expanded at configuration time, for convenient use.
266 "archname"
268 From archname.U:
269 This variable is a short name to characterize the current
271 architecture. It is used mainly to construct the default archlib.
272 "archname64"
274 From use64bits.U:
275 This variable is used for the 64-bitness part of $archname.
277 "archobjs"
279 From Unix.U:
280 This variable defines any additional objects that must be linked in
282 with the program on this architecture. On unix, it is usually
283 empty. It is typically used to include emulations of unix calls or
284 other facilities. For perl on OS/2, for example, this would
285 include os2/os2.obj.
286 "asctime_r_proto"
288 From d_asctime_r.U:
289 This variable encodes the prototype of asctime_r. It is zero if
291 d_asctime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
292 of reentr.h if d_asctime_r is defined.
293 "awk"
295 From Loc.U:
296 This variable is used internally by Configure to determine the full
298 pathname (if any) of the awk program. After Configure runs, the
299 value is reset to a plain "awk" and is not useful.
300 b
302 "baserev"
303 From baserev.U:
304 The base revision level of this package, from the .package file.
306 "bash"
308 From Loc.U:
309 This variable is defined but not used by Configure. The value is
311 the empty string and is not useful.
312 "bin"
314 From bin.U:
315 This variable holds the name of the directory in which the user
317 wants to put publicly executable images for the package in
318 question. It is most often a local directory such as
319 /usr/local/bin. Programs using this variable must be prepared to
320 deal with ~name substitution.
321 "bin_ELF"
323 From dlsrc.U:
324 This variable saves the result from configure if generated binaries
326 are in "ELF" format. Only set to defined when the test has actually
327 been performed, and the result was positive.
328 "binexp"
330 From bin.U:
331 This is the same as the bin variable, but is filename expanded at
333 configuration time, for use in your makefiles.
334 "bison"
336 From Loc.U:
337 This variable is used internally by Configure to determine the full
339 pathname (if any) of the bison program. After Configure runs, the
340 value is reset to a plain "bison" and is not useful.
341 "byacc"
343 From Loc.U:
344 This variable is used internally by Configure to determine the full
346 pathname (if any) of the byacc program. After Configure runs, the
347 value is reset to a plain "byacc" and is not useful.
348 "byteorder"
350 From byteorder.U:
351 This variable holds the byte order in a "UV". In the following,
353 larger digits indicate more significance. The variable byteorder
354 is either 4321 on a big-endian machine, or 1234 on a little-endian,
355 or 87654321 on a Cray ... or 3412 with weird order !
356 c
358 "c" From n.U:
359 This variable contains the \c string if that is what causes the
361 echo command to suppress newline. Otherwise it is null. Correct
362 usage is $echo $n "prompt for a question: $c".
363 "castflags"
365 From d_castneg.U:
366 This variable contains a flag that precise difficulties the
368 compiler has casting odd floating values to unsigned long: 0 = ok 1
369 = couldn't cast < 0 2 = couldn't cast >= 0x80000000 4 = couldn't
370 cast in argument expression list
371 "cat"
373 From Loc.U:
374 This variable is used internally by Configure to determine the full
376 pathname (if any) of the cat program. After Configure runs, the
377 value is reset to a plain "cat" and is not useful.
378 "cc"
380 From cc.U:
381 This variable holds the name of a command to execute a C compiler
383 which can resolve multiple global references that happen to have
384 the same name. Usual values are "cc" and "gcc". Fervent "ANSI"
385 compilers may be called "c89". "AIX" has xlc.
386 "cccdlflags"
388 From dlsrc.U:
389 This variable contains any special flags that might need to be
391 passed with "cc -c" to compile modules to be used to create a
392 shared library that will be used for dynamic loading. For hpux,
393 this should be +z. It is up to the makefile to use it.
394 "ccdlflags"
396 From dlsrc.U:
397 This variable contains any special flags that might need to be
399 passed to cc to link with a shared library for dynamic loading. It
400 is up to the makefile to use it. For sunos 4.1, it should be
401 empty.
402 "ccflags"
404 From ccflags.U:
405 This variable contains any additional C compiler flags desired by
407 the user. It is up to the Makefile to use this.
408 "ccflags_uselargefiles"
410 From uselfs.U:
411 This variable contains the compiler flags needed by large file
413 builds and added to ccflags by hints files.
414 "ccname"
416 From Checkcc.U:
417 This can set either by hints files or by Configure. If using gcc,
419 this is gcc, and if not, usually equal to cc, unimpressive, no?
420 Some platforms, however, make good use of this by storing the
421 flavor of the C compiler being used here. For example if using the
422 Sun WorkShop suite, ccname will be "workshop".
423 "ccsymbols"
425 From Cppsym.U:
426 The variable contains the symbols defined by the C compiler alone.
428 The symbols defined by cpp or by cc when it calls cpp are not in
429 this list, see cppsymbols and cppccsymbols. The list is a space-
430 separated list of symbol=value tokens.
431 "ccversion"
433 From Checkcc.U:
434 This can set either by hints files or by Configure. If using a
436 (non-gcc) vendor cc, this variable may contain a version for the
437 compiler.
438 "cf_by"
440 From cf_who.U:
441 Login name of the person who ran the Configure script and answered
443 the questions. This is used to tag both config.sh and config_h.SH.
444 "cf_email"
446 From cf_email.U:
447 Electronic mail address of the person who ran Configure. This can
449 be used by units that require the user's e-mail, like MailList.U.
450 "cf_time"
452 From cf_who.U:
453 Holds the output of the "date" command when the configuration file
455 was produced. This is used to tag both config.sh and config_h.SH.
456 "charbits"
458 From charsize.U:
459 This variable contains the value of the "CHARBITS" symbol, which
461 indicates to the C program how many bits there are in a character.
462 "charsize"
464 From charsize.U:
465 This variable contains the value of the "CHARSIZE" symbol, which
467 indicates to the C program how many bytes there are in a character.
468 "chgrp"
470 From Loc.U:
471 This variable is defined but not used by Configure. The value is
473 the empty string and is not useful.
474 "chmod"
476 From Loc.U:
477 This variable is used internally by Configure to determine the full
479 pathname (if any) of the chmod program. After Configure runs, the
480 value is reset to a plain "chmod" and is not useful.
481 "chown"
483 From Loc.U:
484 This variable is defined but not used by Configure. The value is
486 the empty string and is not useful.
487 "clocktype"
489 From d_times.U:
490 This variable holds the type returned by times(). It can be long,
492 or clock_t on "BSD" sites (in which case <sys/types.h> should be
493 included).
494 "comm"
496 From Loc.U:
497 This variable is used internally by Configure to determine the full
499 pathname (if any) of the comm program. After Configure runs, the
500 value is reset to a plain "comm" and is not useful.
501 "compress"
503 From Loc.U:
504 This variable is defined but not used by Configure. The value is
506 the empty string and is not useful.
507 "config_arg0"
509 From Options.U:
510 This variable contains the string used to invoke the Configure
512 command, as reported by the shell in the $0 variable.
513 "config_argc"
515 From Options.U:
516 This variable contains the number of command-line arguments passed
518 to Configure, as reported by the shell in the $# variable. The
519 individual arguments are stored as variables config_arg1,
520 config_arg2, etc.
521 "config_args"
523 From Options.U:
524 This variable contains a single string giving the command-line
526 arguments passed to Configure. Spaces within arguments, quotes, and
527 escaped characters are not correctly preserved. To reconstruct the
528 command line, you must assemble the individual command line pieces,
529 given in config_arg[0-9]*.
530 "contains"
532 From contains.U:
533 This variable holds the command to do a grep with a proper return
535 status. On most sane systems it is simply "grep". On insane
536 systems it is a grep followed by a cat followed by a test. This
537 variable is primarily for the use of other Configure units.
538 "cp"
540 From Loc.U:
541 This variable is used internally by Configure to determine the full
543 pathname (if any) of the cp program. After Configure runs, the
544 value is reset to a plain "cp" and is not useful.
545 "cpio"
547 From Loc.U:
548 This variable is defined but not used by Configure. The value is
550 the empty string and is not useful.
551 "cpp"
553 From Loc.U:
554 This variable is used internally by Configure to determine the full
556 pathname (if any) of the cpp program. After Configure runs, the
557 value is reset to a plain "cpp" and is not useful.
558 "cpp_stuff"
560 From cpp_stuff.U:
561 This variable contains an identification of the concatenation
563 mechanism used by the C preprocessor.
564 "cppccsymbols"
566 From Cppsym.U:
567 The variable contains the symbols defined by the C compiler when it
569 calls cpp. The symbols defined by the cc alone or cpp alone are
570 not in this list, see ccsymbols and cppsymbols. The list is a
571 space-separated list of symbol=value tokens.
572 "cppflags"
574 From ccflags.U:
575 This variable holds the flags that will be passed to the C pre-
577 processor. It is up to the Makefile to use it.
578 "cpplast"
580 From cppstdin.U:
581 This variable has the same functionality as cppminus, only it
583 applies to cpprun and not cppstdin.
584 "cppminus"
586 From cppstdin.U:
587 This variable contains the second part of the string which will
589 invoke the C preprocessor on the standard input and produce to
590 standard output. This variable will have the value "-" if cppstdin
591 needs a minus to specify standard input, otherwise the value is "".
592 "cpprun"
594 From cppstdin.U:
595 This variable contains the command which will invoke a C
597 preprocessor on standard input and put the output to stdout. It is
598 guaranteed not to be a wrapper and may be a null string if no
599 preprocessor can be made directly available. This preprocessor
600 might be different from the one used by the C compiler. Don't
601 forget to append cpplast after the preprocessor options.
602 "cppstdin"
604 From cppstdin.U:
605 This variable contains the command which will invoke the C
607 preprocessor on standard input and put the output to stdout. It is
608 primarily used by other Configure units that ask about preprocessor
609 symbols.
610 "cppsymbols"
612 From Cppsym.U:
613 The variable contains the symbols defined by the C preprocessor
615 alone. The symbols defined by cc or by cc when it calls cpp are
616 not in this list, see ccsymbols and cppccsymbols. The list is a
617 space-separated list of symbol=value tokens.
618 "crypt_r_proto"
620 From d_crypt_r.U:
621 This variable encodes the prototype of crypt_r. It is zero if
623 d_crypt_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
624 of reentr.h if d_crypt_r is defined.
625 "cryptlib"
627 From d_crypt.U:
628 This variable holds -lcrypt or the path to a libcrypt.a archive if
630 the crypt() function is not defined in the standard C library. It
631 is up to the Makefile to use this.
632 "csh"
634 From Loc.U:
635 This variable is used internally by Configure to determine the full
637 pathname (if any) of the csh program. After Configure runs, the
638 value is reset to a plain "csh" and is not useful.
639 "ctermid_r_proto"
641 From d_ctermid_r.U:
642 This variable encodes the prototype of ctermid_r. It is zero if
644 d_ctermid_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
645 of reentr.h if d_ctermid_r is defined.
646 "ctime_r_proto"
648 From d_ctime_r.U:
649 This variable encodes the prototype of ctime_r. It is zero if
651 d_ctime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
652 of reentr.h if d_ctime_r is defined.
653 d
655 "d__fwalk"
656 From d__fwalk.U:
657 This variable conditionally defines "HAS__FWALK" if _fwalk() is
659 available to apply a function to all the file handles.
660 "d_access"
662 From d_access.U:
663 This variable conditionally defines "HAS_ACCESS" if the access()
665 system call is available to check for access permissions using real
666 IDs.
667 "d_accessx"
669 From d_accessx.U:
670 This variable conditionally defines the "HAS_ACCESSX" symbol, which
672 indicates to the C program that the accessx() routine is available.
673 "d_aintl"
675 From d_aintl.U:
676 This variable conditionally defines the "HAS_AINTL" symbol, which
678 indicates to the C program that the aintl() routine is available.
679 If copysignl is also present we can emulate modfl.
680 "d_alarm"
682 From d_alarm.U:
683 This variable conditionally defines the "HAS_ALARM" symbol, which
685 indicates to the C program that the alarm() routine is available.
686 "d_archlib"
688 From archlib.U:
689 This variable conditionally defines "ARCHLIB" to hold the pathname
691 of architecture-dependent library files for $package. If $archlib
692 is the same as $privlib, then this is set to undef.
693 "d_asctime64"
695 From d_timefuncs64.U:
696 This variable conditionally defines the HAS_ASCTIME64 symbol, which
698 indicates to the C program that the asctime64 () routine is
699 available.
700 "d_asctime_r"
702 From d_asctime_r.U:
703 This variable conditionally defines the "HAS_ASCTIME_R" symbol,
705 which indicates to the C program that the asctime_r() routine is
706 available.
707 "d_atolf"
709 From atolf.U:
710 This variable conditionally defines the "HAS_ATOLF" symbol, which
712 indicates to the C program that the atolf() routine is available.
713 "d_atoll"
715 From atoll.U:
716 This variable conditionally defines the "HAS_ATOLL" symbol, which
718 indicates to the C program that the atoll() routine is available.
719 "d_attribute_deprecated"
721 From d_attribut.U:
722 This variable conditionally defines "HASATTRIBUTE_DEPRECATED",
724 which indicates that "GCC" can handle the attribute for marking
725 deprecated APIs
726 "d_attribute_format"
728 From d_attribut.U:
729 This variable conditionally defines "HASATTRIBUTE_FORMAT", which
731 indicates the C compiler can check for printf-like formats.
732 "d_attribute_malloc"
734 From d_attribut.U:
735 This variable conditionally defines "HASATTRIBUTE_MALLOC", which
737 indicates the C compiler can understand functions as having malloc-
738 like semantics.
739 "d_attribute_nonnull"
741 From d_attribut.U:
742 This variable conditionally defines "HASATTRIBUTE_NONNULL", which
744 indicates that the C compiler can know that certain arguments must
745 not be "NULL", and will check accordingly at compile time.
746 "d_attribute_noreturn"
748 From d_attribut.U:
749 This variable conditionally defines "HASATTRIBUTE_NORETURN", which
751 indicates that the C compiler can know that certain functions are
752 guaranteed never to return.
753 "d_attribute_pure"
755 From d_attribut.U:
756 This variable conditionally defines "HASATTRIBUTE_PURE", which
758 indicates that the C compiler can know that certain functions are
759 "pure" functions, meaning that they have no side effects, and only
760 rely on function input and/or global data for their results.
761 "d_attribute_unused"
763 From d_attribut.U:
764 This variable conditionally defines "HASATTRIBUTE_UNUSED", which
766 indicates that the C compiler can know that certain variables and
767 arguments may not always be used, and to not throw warnings if they
768 don't get used.
769 "d_attribute_warn_unused_result"
771 From d_attribut.U:
772 This variable conditionally defines
774 "HASATTRIBUTE_WARN_UNUSED_RESULT", which indicates that the C
775 compiler can know that certain functions have a return values that
776 must not be ignored, such as malloc() or open().
777 "d_bcmp"
779 From d_bcmp.U:
780 This variable conditionally defines the "HAS_BCMP" symbol if the
782 bcmp() routine is available to compare strings.
783 "d_bcopy"
785 From d_bcopy.U:
786 This variable conditionally defines the "HAS_BCOPY" symbol if the
788 bcopy() routine is available to copy strings.
789 "d_bsd"
791 From Guess.U:
792 This symbol conditionally defines the symbol "BSD" when running on
794 a "BSD" system.
795 "d_bsdgetpgrp"
797 From d_getpgrp.U:
798 This variable conditionally defines "USE_BSD_GETPGRP" if getpgrp
800 needs one arguments whereas "USG" one needs none.
801 "d_bsdsetpgrp"
803 From d_setpgrp.U:
804 This variable conditionally defines "USE_BSD_SETPGRP" if setpgrp
806 needs two arguments whereas "USG" one needs none. See also
807 d_setpgid for a "POSIX" interface.
808 "d_builtin_choose_expr"
810 From d_builtin.U:
811 This conditionally defines "HAS_BUILTIN_CHOOSE_EXPR", which
813 indicates that the compiler supports __builtin_choose_expr(x,y,z).
814 This built-in function is analogous to the "x?y:z" operator in C,
815 except that the expression returned has its type unaltered by
816 promotion rules. Also, the built-in function does not evaluate the
817 expression that was not chosen.
818 "d_builtin_expect"
820 From d_builtin.U:
821 This conditionally defines "HAS_BUILTIN_EXPECT", which indicates
823 that the compiler supports __builtin_expect(exp,c). You may use
824 __builtin_expect to provide the compiler with branch prediction
825 information.
826 "d_bzero"
828 From d_bzero.U:
829 This variable conditionally defines the "HAS_BZERO" symbol if the
831 bzero() routine is available to set memory to 0.
832 "d_c99_variadic_macros"
834 From d_c99_variadic.U:
835 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
837 symbol, which indicates to the C program that C99 variadic macros
838 are available.
839 "d_casti32"
841 From d_casti32.U:
842 This variable conditionally defines CASTI32, which indicates
844 whether the C compiler can cast large floats to 32-bit ints.
845 "d_castneg"
847 From d_castneg.U:
848 This variable conditionally defines "CASTNEG", which indicates
850 whether the C compiler can cast negative float to unsigned.
851 "d_charvspr"
853 From d_vprintf.U:
854 This variable conditionally defines "CHARVSPRINTF" if this system
856 has vsprintf returning type (char*). The trend seems to be to
857 declare it as "int vsprintf()".
858 "d_chown"
860 From d_chown.U:
861 This variable conditionally defines the "HAS_CHOWN" symbol, which
863 indicates to the C program that the chown() routine is available.
864 "d_chroot"
866 From d_chroot.U:
867 This variable conditionally defines the "HAS_CHROOT" symbol, which
869 indicates to the C program that the chroot() routine is available.
870 "d_chsize"
872 From d_chsize.U:
873 This variable conditionally defines the "CHSIZE" symbol, which
875 indicates to the C program that the chsize() routine is available
876 to truncate files. You might need a -lx to get this routine.
877 "d_class"
879 From d_class.U:
880 This variable conditionally defines the "HAS_CLASS" symbol, which
882 indicates to the C program that the class() routine is available.
883 "d_clearenv"
885 From d_clearenv.U:
886 This variable conditionally defines the "HAS_CLEARENV" symbol,
888 which indicates to the C program that the clearenv () routine is
889 available.
890 "d_closedir"
892 From d_closedir.U:
893 This variable conditionally defines "HAS_CLOSEDIR" if closedir() is
895 available.
896 "d_cmsghdr_s"
898 From d_cmsghdr_s.U:
899 This variable conditionally defines the "HAS_STRUCT_CMSGHDR"
901 symbol, which indicates that the struct cmsghdr is supported.
902 "d_const"
904 From d_const.U:
905 This variable conditionally defines the "HASCONST" symbol, which
907 indicates to the C program that this C compiler knows about the
908 const type.
909 "d_copysignl"
911 From d_copysignl.U:
912 This variable conditionally defines the "HAS_COPYSIGNL" symbol,
914 which indicates to the C program that the copysignl() routine is
915 available. If aintl is also present we can emulate modfl.
916 "d_cplusplus"
918 From d_cplusplus.U:
919 This variable conditionally defines the "USE_CPLUSPLUS" symbol,
921 which indicates that a C++ compiler was used to compiled Perl and
922 will be used to compile extensions.
923 "d_crypt"
925 From d_crypt.U:
926 This variable conditionally defines the "CRYPT" symbol, which
928 indicates to the C program that the crypt() routine is available to
929 encrypt passwords and the like.
930 "d_crypt_r"
932 From d_crypt_r.U:
933 This variable conditionally defines the "HAS_CRYPT_R" symbol, which
935 indicates to the C program that the crypt_r() routine is available.
936 "d_csh"
938 From d_csh.U:
939 This variable conditionally defines the "CSH" symbol, which
941 indicates to the C program that the C-shell exists.
942 "d_ctermid"
944 From d_ctermid.U:
945 This variable conditionally defines "CTERMID" if ctermid() is
947 available to generate filename for terminal.
948 "d_ctermid_r"
950 From d_ctermid_r.U:
951 This variable conditionally defines the "HAS_CTERMID_R" symbol,
953 which indicates to the C program that the ctermid_r() routine is
954 available.
955 "d_ctime64"
957 From d_timefuncs64.U:
958 This variable conditionally defines the HAS_CTIME64 symbol, which
960 indicates to the C program that the ctime64 () routine is
961 available.
962 "d_ctime_r"
964 From d_ctime_r.U:
965 This variable conditionally defines the "HAS_CTIME_R" symbol, which
967 indicates to the C program that the ctime_r() routine is available.
968 "d_cuserid"
970 From d_cuserid.U:
971 This variable conditionally defines the "HAS_CUSERID" symbol, which
973 indicates to the C program that the cuserid() routine is available
974 to get character login names.
975 "d_dbl_dig"
977 From d_dbl_dig.U:
978 This variable conditionally defines d_dbl_dig if this system's
980 header files provide "DBL_DIG", which is the number of significant
981 digits in a double precision number.
982 "d_dbminitproto"
984 From d_dbminitproto.U:
985 This variable conditionally defines the "HAS_DBMINIT_PROTO" symbol,
987 which indicates to the C program that the system provides a
988 prototype for the dbminit() function. Otherwise, it is up to the
989 program to supply one.
990 "d_difftime"
992 From d_difftime.U:
993 This variable conditionally defines the "HAS_DIFFTIME" symbol,
995 which indicates to the C program that the difftime() routine is
996 available.
997 "d_difftime64"
999 From d_timefuncs64.U:
1000 This variable conditionally defines the HAS_DIFFTIME64 symbol,
1002 which indicates to the C program that the difftime64 () routine is
1003 available.
1004 "d_dir_dd_fd"
1006 From d_dir_dd_fd.U:
1007 This variable conditionally defines the "HAS_DIR_DD_FD" symbol,
1009 which indicates that the "DIR" directory stream type contains a
1010 member variable called dd_fd.
1011 "d_dirfd"
1013 From d_dirfd.U:
1014 This variable conditionally defines the "HAS_DIRFD" constant, which
1016 indicates to the C program that dirfd() is available to return the
1017 file descriptor of a directory stream.
1018 "d_dirnamlen"
1020 From i_dirent.U:
1021 This variable conditionally defines "DIRNAMLEN", which indicates to
1023 the C program that the length of directory entry names is provided
1024 by a d_namelen field.
1025 "d_dlerror"
1027 From d_dlerror.U:
1028 This variable conditionally defines the "HAS_DLERROR" symbol, which
1030 indicates to the C program that the dlerror() routine is available.
1031 "d_dlopen"
1033 From d_dlopen.U:
1034 This variable conditionally defines the "HAS_DLOPEN" symbol, which
1036 indicates to the C program that the dlopen() routine is available.
1037 "d_dlsymun"
1039 From d_dlsymun.U:
1040 This variable conditionally defines "DLSYM_NEEDS_UNDERSCORE", which
1042 indicates that we need to prepend an underscore to the symbol name
1043 before calling dlsym().
1044 "d_dosuid"
1046 From d_dosuid.U:
1047 This variable conditionally defines the symbol "DOSUID", which
1049 tells the C program that it should insert setuid emulation code on
1050 hosts which have setuid #! scripts disabled.
1051 "d_drand48_r"
1053 From d_drand48_r.U:
1054 This variable conditionally defines the HAS_DRAND48_R symbol, which
1056 indicates to the C program that the drand48_r() routine is
1057 available.
1058 "d_drand48proto"
1060 From d_drand48proto.U:
1061 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
1063 which indicates to the C program that the system provides a
1064 prototype for the drand48() function. Otherwise, it is up to the
1065 program to supply one.
1066 "d_dup2"
1068 From d_dup2.U:
1069 This variable conditionally defines HAS_DUP2 if dup2() is available
1071 to duplicate file descriptors.
1072 "d_eaccess"
1074 From d_eaccess.U:
1075 This variable conditionally defines the "HAS_EACCESS" symbol, which
1077 indicates to the C program that the eaccess() routine is available.
1078 "d_endgrent"
1080 From d_endgrent.U:
1081 This variable conditionally defines the "HAS_ENDGRENT" symbol,
1083 which indicates to the C program that the endgrent() routine is
1084 available for sequential access of the group database.
1085 "d_endgrent_r"
1087 From d_endgrent_r.U:
1088 This variable conditionally defines the "HAS_ENDGRENT_R" symbol,
1090 which indicates to the C program that the endgrent_r() routine is
1091 available.
1092 "d_endhent"
1094 From d_endhent.U:
1095 This variable conditionally defines "HAS_ENDHOSTENT" if
1097 endhostent() is available to close whatever was being used for host
1098 queries.
1099 "d_endhostent_r"
1101 From d_endhostent_r.U:
1102 This variable conditionally defines the "HAS_ENDHOSTENT_R" symbol,
1104 which indicates to the C program that the endhostent_r() routine is
1105 available.
1106 "d_endnent"
1108 From d_endnent.U:
1109 This variable conditionally defines "HAS_ENDNETENT" if endnetent()
1111 is available to close whatever was being used for network queries.
1112 "d_endnetent_r"
1114 From d_endnetent_r.U:
1115 This variable conditionally defines the "HAS_ENDNETENT_R" symbol,
1117 which indicates to the C program that the endnetent_r() routine is
1118 available.
1119 "d_endpent"
1121 From d_endpent.U:
1122 This variable conditionally defines "HAS_ENDPROTOENT" if
1124 endprotoent() is available to close whatever was being used for
1125 protocol queries.
1126 "d_endprotoent_r"
1128 From d_endprotoent_r.U:
1129 This variable conditionally defines the "HAS_ENDPROTOENT_R" symbol,
1131 which indicates to the C program that the endprotoent_r() routine
1132 is available.
1133 "d_endpwent"
1135 From d_endpwent.U:
1136 This variable conditionally defines the "HAS_ENDPWENT" symbol,
1138 which indicates to the C program that the endpwent() routine is
1139 available for sequential access of the passwd database.
1140 "d_endpwent_r"
1142 From d_endpwent_r.U:
1143 This variable conditionally defines the "HAS_ENDPWENT_R" symbol,
1145 which indicates to the C program that the endpwent_r() routine is
1146 available.
1147 "d_endsent"
1149 From d_endsent.U:
1150 This variable conditionally defines "HAS_ENDSERVENT" if
1152 endservent() is available to close whatever was being used for
1153 service queries.
1154 "d_endservent_r"
1156 From d_endservent_r.U:
1157 This variable conditionally defines the "HAS_ENDSERVENT_R" symbol,
1159 which indicates to the C program that the endservent_r() routine is
1160 available.
1161 "d_eofnblk"
1163 From nblock_io.U:
1164 This variable conditionally defines "EOF_NONBLOCK" if "EOF" can be
1166 seen when reading from a non-blocking I/O source.
1167 "d_eunice"
1169 From Guess.U:
1170 This variable conditionally defines the symbols "EUNICE" and "VAX",
1172 which alerts the C program that it must deal with idiosyncrasies of
1173 "VMS".
1174 "d_faststdio"
1176 From d_faststdio.U:
1177 This variable conditionally defines the "HAS_FAST_STDIO" symbol,
1179 which indicates to the C program that the "fast stdio" is available
1180 to manipulate the stdio buffers directly.
1181 "d_fchdir"
1183 From d_fchdir.U:
1184 This variable conditionally defines the "HAS_FCHDIR" symbol, which
1186 indicates to the C program that the fchdir() routine is available.
1187 "d_fchmod"
1189 From d_fchmod.U:
1190 This variable conditionally defines the "HAS_FCHMOD" symbol, which
1192 indicates to the C program that the fchmod() routine is available
1193 to change mode of opened files.
1194 "d_fchown"
1196 From d_fchown.U:
1197 This variable conditionally defines the "HAS_FCHOWN" symbol, which
1199 indicates to the C program that the fchown() routine is available
1200 to change ownership of opened files.
1201 "d_fcntl"
1203 From d_fcntl.U:
1204 This variable conditionally defines the "HAS_FCNTL" symbol, and
1206 indicates whether the fcntl() function exists
1207 "d_fcntl_can_lock"
1209 From d_fcntl_can_lock.U:
1210 This variable conditionally defines the "FCNTL_CAN_LOCK" symbol and
1212 indicates whether file locking with fcntl() works.
1213 "d_fd_macros"
1215 From d_fd_set.U:
1216 This variable contains the eventual value of the "HAS_FD_MACROS"
1218 symbol, which indicates if your C compiler knows about the macros
1219 which manipulate an fd_set.
1220 "d_fd_set"
1222 From d_fd_set.U:
1223 This variable contains the eventual value of the "HAS_FD_SET"
1225 symbol, which indicates if your C compiler knows about the fd_set
1226 typedef.
1227 "d_fds_bits"
1229 From d_fd_set.U:
1230 This variable contains the eventual value of the "HAS_FDS_BITS"
1232 symbol, which indicates if your fd_set typedef contains the
1233 fds_bits member. If you have an fd_set typedef, but the dweebs who
1234 installed it did a half-fast job and neglected to provide the
1235 macros to manipulate an fd_set, "HAS_FDS_BITS" will let us know how
1236 to fix the gaffe.
1237 "d_fgetpos"
1239 From d_fgetpos.U:
1240 This variable conditionally defines "HAS_FGETPOS" if fgetpos() is
1242 available to get the file position indicator.
1243 "d_finite"
1245 From d_finite.U:
1246 This variable conditionally defines the "HAS_FINITE" symbol, which
1248 indicates to the C program that the finite() routine is available.
1249 "d_finitel"
1251 From d_finitel.U:
1252 This variable conditionally defines the "HAS_FINITEL" symbol, which
1254 indicates to the C program that the finitel() routine is available.
1255 "d_flexfnam"
1257 From d_flexfnam.U:
1258 This variable conditionally defines the "FLEXFILENAMES" symbol,
1260 which indicates that the system supports filenames longer than 14
1261 characters.
1262 "d_flock"
1264 From d_flock.U:
1265 This variable conditionally defines "HAS_FLOCK" if flock() is
1267 available to do file locking.
1268 "d_flockproto"
1270 From d_flockproto.U:
1271 This variable conditionally defines the "HAS_FLOCK_PROTO" symbol,
1273 which indicates to the C program that the system provides a
1274 prototype for the flock() function. Otherwise, it is up to the
1275 program to supply one.
1276 "d_fork"
1278 From d_fork.U:
1279 This variable conditionally defines the "HAS_FORK" symbol, which
1281 indicates to the C program that the fork() routine is available.
1282 "d_fp_class"
1284 From d_fp_class.U:
1285 This variable conditionally defines the "HAS_FP_CLASS" symbol,
1287 which indicates to the C program that the fp_class() routine is
1288 available.
1289 "d_fpathconf"
1291 From d_pathconf.U:
1292 This variable conditionally defines the "HAS_FPATHCONF" symbol,
1294 which indicates to the C program that the pathconf() routine is
1295 available to determine file-system related limits and options
1296 associated with a given open file descriptor.
1297 "d_fpclass"
1299 From d_fpclass.U:
1300 This variable conditionally defines the "HAS_FPCLASS" symbol, which
1302 indicates to the C program that the fpclass() routine is available.
1303 "d_fpclassify"
1305 From d_fpclassify.U:
1306 This variable conditionally defines the "HAS_FPCLASSIFY" symbol,
1308 which indicates to the C program that the fpclassify() routine is
1309 available.
1310 "d_fpclassl"
1312 From d_fpclassl.U:
1313 This variable conditionally defines the "HAS_FPCLASSL" symbol,
1315 which indicates to the C program that the fpclassl() routine is
1316 available.
1317 "d_fpos64_t"
1319 From d_fpos64_t.U:
1320 This symbol will be defined if the C compiler supports fpos64_t.
1322 "d_frexpl"
1324 From d_frexpl.U:
1325 This variable conditionally defines the "HAS_FREXPL" symbol, which
1327 indicates to the C program that the frexpl() routine is available.
1328 "d_fs_data_s"
1330 From d_fs_data_s.U:
1331 This variable conditionally defines the "HAS_STRUCT_FS_DATA"
1333 symbol, which indicates that the struct fs_data is supported.
1334 "d_fseeko"
1336 From d_fseeko.U:
1337 This variable conditionally defines the "HAS_FSEEKO" symbol, which
1339 indicates to the C program that the fseeko() routine is available.
1340 "d_fsetpos"
1342 From d_fsetpos.U:
1343 This variable conditionally defines "HAS_FSETPOS" if fsetpos() is
1345 available to set the file position indicator.
1346 "d_fstatfs"
1348 From d_fstatfs.U:
1349 This variable conditionally defines the "HAS_FSTATFS" symbol, which
1351 indicates to the C program that the fstatfs() routine is available.
1352 "d_fstatvfs"
1354 From d_statvfs.U:
1355 This variable conditionally defines the "HAS_FSTATVFS" symbol,
1357 which indicates to the C program that the fstatvfs() routine is
1358 available.
1359 "d_fsync"
1361 From d_fsync.U:
1362 This variable conditionally defines the "HAS_FSYNC" symbol, which
1364 indicates to the C program that the fsync() routine is available.
1365 "d_ftello"
1367 From d_ftello.U:
1368 This variable conditionally defines the "HAS_FTELLO" symbol, which
1370 indicates to the C program that the ftello() routine is available.
1371 "d_ftime"
1373 From d_ftime.U:
1374 This variable conditionally defines the "HAS_FTIME" symbol, which
1376 indicates that the ftime() routine exists. The ftime() routine is
1377 basically a sub-second accuracy clock.
1378 "d_futimes"
1380 From d_futimes.U:
1381 This variable conditionally defines the "HAS_FUTIMES" symbol, which
1383 indicates to the C program that the futimes() routine is available.
1384 "d_Gconvert"
1386 From d_gconvert.U:
1387 This variable holds what Gconvert is defined as to convert floating
1389 point numbers into strings. By default, Configure sets "this"
1390 macro to use the first of gconvert, gcvt, or sprintf that pass
1391 sprintf-%g-like behaviour tests. If perl is using long doubles,
1392 the macro uses the first of the following functions that pass
1393 Configure's tests: qgcvt, sprintf (if Configure knows how to make
1394 sprintf format long doubles--see sPRIgldbl), gconvert, gcvt, and
1395 sprintf (casting to double). The gconvert_preference and
1396 gconvert_ld_preference variables can be used to alter Configure's
1397 preferences, for doubles and long doubles, respectively. If
1398 present, they contain a space-separated list of one or more of the
1399 above function names in the order they should be tried.
1400 d_Gconvert may be set to override Configure with a platform-
1402 specific function. If this function expects a double, a different
1403 value may need to be set by the uselongdouble.cbu call-back unit so
1404 that long doubles can be formatted without loss of precision.
1405 "d_gdbm_ndbm_h_uses_prototypes"
1407 From i_ndbm.U:
1408 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
1410 symbol, which indicates that the gdbm-ndbm.h include file uses real
1411 "ANSI" C prototypes instead of K&R style function declarations. K&R
1412 style declarations are unsupported in C++, so the include file
1413 requires special handling when using a C++ compiler and this
1414 variable is undefined. Consult the different
1415 d_*ndbm_h_uses_prototypes variables to get the same information for
1416 alternative ndbm.h include files.
1417 "d_gdbmndbm_h_uses_prototypes"
1419 From i_ndbm.U:
1420 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
1422 symbol, which indicates that the gdbm/ndbm.h include file uses real
1423 "ANSI" C prototypes instead of K&R style function declarations. K&R
1424 style declarations are unsupported in C++, so the include file
1425 requires special handling when using a C++ compiler and this
1426 variable is undefined. Consult the different
1427 d_*ndbm_h_uses_prototypes variables to get the same information for
1428 alternative ndbm.h include files.
1429 "d_getaddrinfo"
1431 From d_getaddrinfo.U:
1432 This variable conditionally defines the "HAS_GETADDRINFO" symbol,
1434 which indicates to the C program that the getaddrinfo() function is
1435 available.
1436 "d_getcwd"
1438 From d_getcwd.U:
1439 This variable conditionally defines the "HAS_GETCWD" symbol, which
1441 indicates to the C program that the getcwd() routine is available
1442 to get the current working directory.
1443 "d_getespwnam"
1445 From d_getespwnam.U:
1446 This variable conditionally defines "HAS_GETESPWNAM" if
1448 getespwnam() is available to retrieve enhanced (shadow) password
1449 entries by name.
1450 "d_getfsstat"
1452 From d_getfsstat.U:
1453 This variable conditionally defines the "HAS_GETFSSTAT" symbol,
1455 which indicates to the C program that the getfsstat() routine is
1456 available.
1457 "d_getgrent"
1459 From d_getgrent.U:
1460 This variable conditionally defines the "HAS_GETGRENT" symbol,
1462 which indicates to the C program that the getgrent() routine is
1463 available for sequential access of the group database.
1464 "d_getgrent_r"
1466 From d_getgrent_r.U:
1467 This variable conditionally defines the "HAS_GETGRENT_R" symbol,
1469 which indicates to the C program that the getgrent_r() routine is
1470 available.
1471 "d_getgrgid_r"
1473 From d_getgrgid_r.U:
1474 This variable conditionally defines the "HAS_GETGRGID_R" symbol,
1476 which indicates to the C program that the getgrgid_r() routine is
1477 available.
1478 "d_getgrnam_r"
1480 From d_getgrnam_r.U:
1481 This variable conditionally defines the "HAS_GETGRNAM_R" symbol,
1483 which indicates to the C program that the getgrnam_r() routine is
1484 available.
1485 "d_getgrps"
1487 From d_getgrps.U:
1488 This variable conditionally defines the "HAS_GETGROUPS" symbol,
1490 which indicates to the C program that the getgroups() routine is
1491 available to get the list of process groups.
1492 "d_gethbyaddr"
1494 From d_gethbyad.U:
1495 This variable conditionally defines the "HAS_GETHOSTBYADDR" symbol,
1497 which indicates to the C program that the gethostbyaddr() routine
1498 is available to look up hosts by their "IP" addresses.
1499 "d_gethbyname"
1501 From d_gethbynm.U:
1502 This variable conditionally defines the "HAS_GETHOSTBYNAME" symbol,
1504 which indicates to the C program that the gethostbyname() routine
1505 is available to look up host names in some data base or other.
1506 "d_gethent"
1508 From d_gethent.U:
1509 This variable conditionally defines "HAS_GETHOSTENT" if
1511 gethostent() is available to look up host names in some data base
1512 or another.
1513 "d_gethname"
1515 From d_gethname.U:
1516 This variable conditionally defines the "HAS_GETHOSTNAME" symbol,
1518 which indicates to the C program that the gethostname() routine may
1519 be used to derive the host name.
1520 "d_gethostbyaddr_r"
1522 From d_gethostbyaddr_r.U:
1523 This variable conditionally defines the "HAS_GETHOSTBYADDR_R"
1525 symbol, which indicates to the C program that the gethostbyaddr_r()
1526 routine is available.
1527 "d_gethostbyname_r"
1529 From d_gethostbyname_r.U:
1530 This variable conditionally defines the "HAS_GETHOSTBYNAME_R"
1532 symbol, which indicates to the C program that the gethostbyname_r()
1533 routine is available.
1534 "d_gethostent_r"
1536 From d_gethostent_r.U:
1537 This variable conditionally defines the "HAS_GETHOSTENT_R" symbol,
1539 which indicates to the C program that the gethostent_r() routine is
1540 available.
1541 "d_gethostprotos"
1543 From d_gethostprotos.U:
1544 This variable conditionally defines the "HAS_GETHOST_PROTOS"
1546 symbol, which indicates to the C program that <netdb.h> supplies
1547 prototypes for the various gethost*() functions. See also
1548 netdbtype.U for probing for various netdb types.
1549 "d_getitimer"
1551 From d_getitimer.U:
1552 This variable conditionally defines the "HAS_GETITIMER" symbol,
1554 which indicates to the C program that the getitimer() routine is
1555 available.
1556 "d_getlogin"
1558 From d_getlogin.U:
1559 This variable conditionally defines the "HAS_GETLOGIN" symbol,
1561 which indicates to the C program that the getlogin() routine is
1562 available to get the login name.
1563 "d_getlogin_r"
1565 From d_getlogin_r.U:
1566 This variable conditionally defines the "HAS_GETLOGIN_R" symbol,
1568 which indicates to the C program that the getlogin_r() routine is
1569 available.
1570 "d_getmnt"
1572 From d_getmnt.U:
1573 This variable conditionally defines the "HAS_GETMNT" symbol, which
1575 indicates to the C program that the getmnt() routine is available
1576 to retrieve one or more mount info blocks by filename.
1577 "d_getmntent"
1579 From d_getmntent.U:
1580 This variable conditionally defines the "HAS_GETMNTENT" symbol,
1582 which indicates to the C program that the getmntent() routine is
1583 available to iterate through mounted files to get their mount info.
1584 "d_getnameinfo"
1586 From d_getnameinfo.U:
1587 This variable conditionally defines the "HAS_GETNAMEINFO" symbol,
1589 which indicates to the C program that the getnameinfo() function is
1590 available.
1591 "d_getnbyaddr"
1593 From d_getnbyad.U:
1594 This variable conditionally defines the "HAS_GETNETBYADDR" symbol,
1596 which indicates to the C program that the getnetbyaddr() routine is
1597 available to look up networks by their "IP" addresses.
1598 "d_getnbyname"
1600 From d_getnbynm.U:
1601 This variable conditionally defines the "HAS_GETNETBYNAME" symbol,
1603 which indicates to the C program that the getnetbyname() routine is
1604 available to look up networks by their names.
1605 "d_getnent"
1607 From d_getnent.U:
1608 This variable conditionally defines "HAS_GETNETENT" if getnetent()
1610 is available to look up network names in some data base or another.
1611 "d_getnetbyaddr_r"
1613 From d_getnetbyaddr_r.U:
1614 This variable conditionally defines the "HAS_GETNETBYADDR_R"
1616 symbol, which indicates to the C program that the getnetbyaddr_r()
1617 routine is available.
1618 "d_getnetbyname_r"
1620 From d_getnetbyname_r.U:
1621 This variable conditionally defines the "HAS_GETNETBYNAME_R"
1623 symbol, which indicates to the C program that the getnetbyname_r()
1624 routine is available.
1625 "d_getnetent_r"
1627 From d_getnetent_r.U:
1628 This variable conditionally defines the "HAS_GETNETENT_R" symbol,
1630 which indicates to the C program that the getnetent_r() routine is
1631 available.
1632 "d_getnetprotos"
1634 From d_getnetprotos.U:
1635 This variable conditionally defines the "HAS_GETNET_PROTOS" symbol,
1637 which indicates to the C program that <netdb.h> supplies prototypes
1638 for the various getnet*() functions. See also netdbtype.U for
1639 probing for various netdb types.
1640 "d_getpagsz"
1642 From d_getpagsz.U:
1643 This variable conditionally defines "HAS_GETPAGESIZE" if
1645 getpagesize() is available to get the system page size.
1646 "d_getpbyname"
1648 From d_getprotby.U:
1649 This variable conditionally defines the "HAS_GETPROTOBYNAME"
1651 symbol, which indicates to the C program that the getprotobyname()
1652 routine is available to look up protocols by their name.
1653 "d_getpbynumber"
1655 From d_getprotby.U:
1656 This variable conditionally defines the "HAS_GETPROTOBYNUMBER"
1658 symbol, which indicates to the C program that the
1659 getprotobynumber() routine is available to look up protocols by
1660 their number.
1661 "d_getpent"
1663 From d_getpent.U:
1664 This variable conditionally defines "HAS_GETPROTOENT" if
1666 getprotoent() is available to look up protocols in some data base
1667 or another.
1668 "d_getpgid"
1670 From d_getpgid.U:
1671 This variable conditionally defines the "HAS_GETPGID" symbol, which
1673 indicates to the C program that the getpgid(pid) function is
1674 available to get the process group id.
1675 "d_getpgrp"
1677 From d_getpgrp.U:
1678 This variable conditionally defines "HAS_GETPGRP" if getpgrp() is
1680 available to get the current process group.
1681 "d_getpgrp2"
1683 From d_getpgrp2.U:
1684 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1686 indicates to the C program that the getpgrp2() (as in DG/"UX")
1687 routine is available to get the current process group.
1688 "d_getppid"
1690 From d_getppid.U:
1691 This variable conditionally defines the "HAS_GETPPID" symbol, which
1693 indicates to the C program that the getppid() routine is available
1694 to get the parent process "ID".
1695 "d_getprior"
1697 From d_getprior.U:
1698 This variable conditionally defines "HAS_GETPRIORITY" if
1700 getpriority() is available to get a process's priority.
1701 "d_getprotobyname_r"
1703 From d_getprotobyname_r.U:
1704 This variable conditionally defines the "HAS_GETPROTOBYNAME_R"
1706 symbol, which indicates to the C program that the
1707 getprotobyname_r() routine is available.
1708 "d_getprotobynumber_r"
1710 From d_getprotobynumber_r.U:
1711 This variable conditionally defines the "HAS_GETPROTOBYNUMBER_R"
1713 symbol, which indicates to the C program that the
1714 getprotobynumber_r() routine is available.
1715 "d_getprotoent_r"
1717 From d_getprotoent_r.U:
1718 This variable conditionally defines the "HAS_GETPROTOENT_R" symbol,
1720 which indicates to the C program that the getprotoent_r() routine
1721 is available.
1722 "d_getprotoprotos"
1724 From d_getprotoprotos.U:
1725 This variable conditionally defines the "HAS_GETPROTO_PROTOS"
1727 symbol, which indicates to the C program that <netdb.h> supplies
1728 prototypes for the various getproto*() functions. See also
1729 netdbtype.U for probing for various netdb types.
1730 "d_getprpwnam"
1732 From d_getprpwnam.U:
1733 This variable conditionally defines "HAS_GETPRPWNAM" if
1735 getprpwnam() is available to retrieve protected (shadow) password
1736 entries by name.
1737 "d_getpwent"
1739 From d_getpwent.U:
1740 This variable conditionally defines the "HAS_GETPWENT" symbol,
1742 which indicates to the C program that the getpwent() routine is
1743 available for sequential access of the passwd database.
1744 "d_getpwent_r"
1746 From d_getpwent_r.U:
1747 This variable conditionally defines the "HAS_GETPWENT_R" symbol,
1749 which indicates to the C program that the getpwent_r() routine is
1750 available.
1751 "d_getpwnam_r"
1753 From d_getpwnam_r.U:
1754 This variable conditionally defines the "HAS_GETPWNAM_R" symbol,
1756 which indicates to the C program that the getpwnam_r() routine is
1757 available.
1758 "d_getpwuid_r"
1760 From d_getpwuid_r.U:
1761 This variable conditionally defines the "HAS_GETPWUID_R" symbol,
1763 which indicates to the C program that the getpwuid_r() routine is
1764 available.
1765 "d_getsbyname"
1767 From d_getsrvby.U:
1768 This variable conditionally defines the "HAS_GETSERVBYNAME" symbol,
1770 which indicates to the C program that the getservbyname() routine
1771 is available to look up services by their name.
1772 "d_getsbyport"
1774 From d_getsrvby.U:
1775 This variable conditionally defines the "HAS_GETSERVBYPORT" symbol,
1777 which indicates to the C program that the getservbyport() routine
1778 is available to look up services by their port.
1779 "d_getsent"
1781 From d_getsent.U:
1782 This variable conditionally defines "HAS_GETSERVENT" if
1784 getservent() is available to look up network services in some data
1785 base or another.
1786 "d_getservbyname_r"
1788 From d_getservbyname_r.U:
1789 This variable conditionally defines the "HAS_GETSERVBYNAME_R"
1791 symbol, which indicates to the C program that the getservbyname_r()
1792 routine is available.
1793 "d_getservbyport_r"
1795 From d_getservbyport_r.U:
1796 This variable conditionally defines the "HAS_GETSERVBYPORT_R"
1798 symbol, which indicates to the C program that the getservbyport_r()
1799 routine is available.
1800 "d_getservent_r"
1802 From d_getservent_r.U:
1803 This variable conditionally defines the "HAS_GETSERVENT_R" symbol,
1805 which indicates to the C program that the getservent_r() routine is
1806 available.
1807 "d_getservprotos"
1809 From d_getservprotos.U:
1810 This variable conditionally defines the "HAS_GETSERV_PROTOS"
1812 symbol, which indicates to the C program that <netdb.h> supplies
1813 prototypes for the various getserv*() functions. See also
1814 netdbtype.U for probing for various netdb types.
1815 "d_getspnam"
1817 From d_getspnam.U:
1818 This variable conditionally defines "HAS_GETSPNAM" if getspnam() is
1820 available to retrieve SysV shadow password entries by name.
1821 "d_getspnam_r"
1823 From d_getspnam_r.U:
1824 This variable conditionally defines the "HAS_GETSPNAM_R" symbol,
1826 which indicates to the C program that the getspnam_r() routine is
1827 available.
1828 "d_gettimeod"
1830 From d_ftime.U:
1831 This variable conditionally defines the "HAS_GETTIMEOFDAY" symbol,
1833 which indicates that the gettimeofday() system call exists (to
1834 obtain a sub-second accuracy clock). You should probably include
1835 <sys/resource.h>.
1836 "d_gmtime64"
1838 From d_timefuncs64.U:
1839 This variable conditionally defines the HAS_GMTIME64 symbol, which
1841 indicates to the C program that the gmtime64 () routine is
1842 available.
1843 "d_gmtime_r"
1845 From d_gmtime_r.U:
1846 This variable conditionally defines the "HAS_GMTIME_R" symbol,
1848 which indicates to the C program that the gmtime_r() routine is
1849 available.
1850 "d_gnulibc"
1852 From d_gnulibc.U:
1853 Defined if we're dealing with the "GNU" C Library.
1855 "d_grpasswd"
1857 From i_grp.U:
1858 This variable conditionally defines "GRPASSWD", which indicates
1860 that struct group in <grp.h> contains gr_passwd.
1861 "d_hasmntopt"
1863 From d_hasmntopt.U:
1864 This variable conditionally defines the "HAS_HASMNTOPT" symbol,
1866 which indicates to the C program that the hasmntopt() routine is
1867 available to query the mount options of file systems.
1868 "d_htonl"
1870 From d_htonl.U:
1871 This variable conditionally defines "HAS_HTONL" if htonl() and its
1873 friends are available to do network order byte swapping.
1874 "d_ilogbl"
1876 From d_ilogbl.U:
1877 This variable conditionally defines the "HAS_ILOGBL" symbol, which
1879 indicates to the C program that the ilogbl() routine is available.
1880 If scalbnl is also present we can emulate frexpl.
1881 "d_inc_version_list"
1883 From inc_version_list.U:
1884 This variable conditionally defines "PERL_INC_VERSION_LIST". It is
1886 set to undef when "PERL_INC_VERSION_LIST" is empty.
1887 "d_index"
1889 From d_strchr.U:
1890 This variable conditionally defines "HAS_INDEX" if index() and
1892 rindex() are available for string searching.
1893 "d_inetaton"
1895 From d_inetaton.U:
1896 This variable conditionally defines the "HAS_INET_ATON" symbol,
1898 which indicates to the C program that the inet_aton() function is
1899 available to parse "IP" address "dotted-quad" strings.
1900 "d_inetntop"
1902 From d_inetntop.U:
1903 This variable conditionally defines the "HAS_INETNTOP" symbol,
1905 which indicates to the C program that the inet_ntop() function is
1906 available.
1907 "d_inetpton"
1909 From d_inetpton.U:
1910 This variable conditionally defines the "HAS_INETPTON" symbol,
1912 which indicates to the C program that the inet_pton() function is
1913 available.
1914 "d_int64_t"
1916 From d_int64_t.U:
1917 This symbol will be defined if the C compiler supports int64_t.
1919 "d_ipv6_mreq"
1921 From d_socket.U:
1922 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
1924 indicates the availability of a struct ipv6_mreq.
1925 "d_isascii"
1927 From d_isascii.U:
1928 This variable conditionally defines the "HAS_ISASCII" constant,
1930 which indicates to the C program that isascii() is available.
1931 "d_isblank"
1933 From d_isblank.U:
1934 This variable conditionally defines the "HAS_ISBLANK" constant,
1936 which indicates to the C program that isblank() is available.
1937 "d_isfinite"
1939 From d_isfinite.U:
1940 This variable conditionally defines the "HAS_ISFINITE" symbol,
1942 which indicates to the C program that the isfinite() routine is
1943 available.
1944 "d_isinf"
1946 From d_isinf.U:
1947 This variable conditionally defines the "HAS_ISINF" symbol, which
1949 indicates to the C program that the isinf() routine is available.
1950 "d_isnan"
1952 From d_isnan.U:
1953 This variable conditionally defines the "HAS_ISNAN" symbol, which
1955 indicates to the C program that the isnan() routine is available.
1956 "d_isnanl"
1958 From d_isnanl.U:
1959 This variable conditionally defines the "HAS_ISNANL" symbol, which
1961 indicates to the C program that the isnanl() routine is available.
1962 "d_killpg"
1964 From d_killpg.U:
1965 This variable conditionally defines the "HAS_KILLPG" symbol, which
1967 indicates to the C program that the killpg() routine is available
1968 to kill process groups.
1969 "d_lchown"
1971 From d_lchown.U:
1972 This variable conditionally defines the "HAS_LCHOWN" symbol, which
1974 indicates to the C program that the lchown() routine is available
1975 to operate on a symbolic link (instead of following the link).
1976 "d_ldbl_dig"
1978 From d_ldbl_dig.U:
1979 This variable conditionally defines d_ldbl_dig if this system's
1981 header files provide "LDBL_DIG", which is the number of significant
1982 digits in a long double precision number.
1983 "d_libm_lib_version"
1985 From d_libm_lib_version.U:
1986 This variable conditionally defines the "LIBM_LIB_VERSION" symbol,
1988 which indicates to the C program that math.h defines "_LIB_VERSION"
1989 being available in libm
1990 "d_link"
1992 From d_link.U:
1993 This variable conditionally defines "HAS_LINK" if link() is
1995 available to create hard links.
1996 "d_localtime64"
1998 From d_timefuncs64.U:
1999 This variable conditionally defines the HAS_LOCALTIME64 symbol,
2001 which indicates to the C program that the localtime64 () routine is
2002 available.
2003 "d_localtime_r"
2005 From d_localtime_r.U:
2006 This variable conditionally defines the "HAS_LOCALTIME_R" symbol,
2008 which indicates to the C program that the localtime_r() routine is
2009 available.
2010 "d_localtime_r_needs_tzset"
2012 From d_localtime_r.U:
2013 This variable conditionally defines the "LOCALTIME_R_NEEDS_TZSET"
2015 symbol, which makes us call tzset before localtime_r()
2016 "d_locconv"
2018 From d_locconv.U:
2019 This variable conditionally defines "HAS_LOCALECONV" if
2021 localeconv() is available for numeric and monetary formatting
2022 conventions.
2023 "d_lockf"
2025 From d_lockf.U:
2026 This variable conditionally defines "HAS_LOCKF" if lockf() is
2028 available to do file locking.
2029 "d_longdbl"
2031 From d_longdbl.U:
2032 This variable conditionally defines "HAS_LONG_DOUBLE" if the long
2034 double type is supported.
2035 "d_longlong"
2037 From d_longlong.U:
2038 This variable conditionally defines "HAS_LONG_LONG" if the long
2040 long type is supported.
2041 "d_lseekproto"
2043 From d_lseekproto.U:
2044 This variable conditionally defines the "HAS_LSEEK_PROTO" symbol,
2046 which indicates to the C program that the system provides a
2047 prototype for the lseek() function. Otherwise, it is up to the
2048 program to supply one.
2049 "d_lstat"
2051 From d_lstat.U:
2052 This variable conditionally defines "HAS_LSTAT" if lstat() is
2054 available to do file stats on symbolic links.
2055 "d_madvise"
2057 From d_madvise.U:
2058 This variable conditionally defines "HAS_MADVISE" if madvise() is
2060 available to map a file into memory.
2061 "d_malloc_good_size"
2063 From d_malloc_size.U:
2064 This symbol, if defined, indicates that the malloc_good_size
2066 routine is available for use.
2067 "d_malloc_size"
2069 From d_malloc_size.U:
2070 This symbol, if defined, indicates that the malloc_size routine is
2072 available for use.
2073 "d_mblen"
2075 From d_mblen.U:
2076 This variable conditionally defines the "HAS_MBLEN" symbol, which
2078 indicates to the C program that the mblen() routine is available to
2079 find the number of bytes in a multibye character.
2080 "d_mbstowcs"
2082 From d_mbstowcs.U:
2083 This variable conditionally defines the "HAS_MBSTOWCS" symbol,
2085 which indicates to the C program that the mbstowcs() routine is
2086 available to convert a multibyte string into a wide character
2087 string.
2088 "d_mbtowc"
2090 From d_mbtowc.U:
2091 This variable conditionally defines the "HAS_MBTOWC" symbol, which
2093 indicates to the C program that the mbtowc() routine is available
2094 to convert multibyte to a wide character.
2095 "d_memchr"
2097 From d_memchr.U:
2098 This variable conditionally defines the "HAS_MEMCHR" symbol, which
2100 indicates to the C program that the memchr() routine is available
2101 to locate characters within a C string.
2102 "d_memcmp"
2104 From d_memcmp.U:
2105 This variable conditionally defines the "HAS_MEMCMP" symbol, which
2107 indicates to the C program that the memcmp() routine is available
2108 to compare blocks of memory.
2109 "d_memcpy"
2111 From d_memcpy.U:
2112 This variable conditionally defines the "HAS_MEMCPY" symbol, which
2114 indicates to the C program that the memcpy() routine is available
2115 to copy blocks of memory.
2116 "d_memmove"
2118 From d_memmove.U:
2119 This variable conditionally defines the "HAS_MEMMOVE" symbol, which
2121 indicates to the C program that the memmove() routine is available
2122 to copy potentially overlapping blocks of memory.
2123 "d_memset"
2125 From d_memset.U:
2126 This variable conditionally defines the "HAS_MEMSET" symbol, which
2128 indicates to the C program that the memset() routine is available
2129 to set blocks of memory.
2130 "d_mkdir"
2132 From d_mkdir.U:
2133 This variable conditionally defines the "HAS_MKDIR" symbol, which
2135 indicates to the C program that the mkdir() routine is available to
2136 create directories..
2137 "d_mkdtemp"
2139 From d_mkdtemp.U:
2140 This variable conditionally defines the "HAS_MKDTEMP" symbol, which
2142 indicates to the C program that the mkdtemp() routine is available
2143 to exclusively create a uniquely named temporary directory.
2144 "d_mkfifo"
2146 From d_mkfifo.U:
2147 This variable conditionally defines the "HAS_MKFIFO" symbol, which
2149 indicates to the C program that the mkfifo() routine is available.
2150 "d_mkstemp"
2152 From d_mkstemp.U:
2153 This variable conditionally defines the "HAS_MKSTEMP" symbol, which
2155 indicates to the C program that the mkstemp() routine is available
2156 to exclusively create and open a uniquely named temporary file.
2157 "d_mkstemps"
2159 From d_mkstemps.U:
2160 This variable conditionally defines the "HAS_MKSTEMPS" symbol,
2162 which indicates to the C program that the mkstemps() routine is
2163 available to exclusively create and open a uniquely named (with a
2164 suffix) temporary file.
2165 "d_mktime"
2167 From d_mktime.U:
2168 This variable conditionally defines the "HAS_MKTIME" symbol, which
2170 indicates to the C program that the mktime() routine is available.
2171 "d_mktime64"
2173 From d_timefuncs64.U:
2174 This variable conditionally defines the HAS_MKTIME64 symbol, which
2176 indicates to the C program that the mktime64 () routine is
2177 available.
2178 "d_mmap"
2180 From d_mmap.U:
2181 This variable conditionally defines "HAS_MMAP" if mmap() is
2183 available to map a file into memory.
2184 "d_modfl"
2186 From d_modfl.U:
2187 This variable conditionally defines the "HAS_MODFL" symbol, which
2189 indicates to the C program that the modfl() routine is available.
2190 "d_modfl_pow32_bug"
2192 From d_modfl.U:
2193 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
2195 which indicates that modfl() is broken for long doubles >= pow(2,
2196 32). For example from 4294967303.150000 one would get
2197 4294967302.000000 and 1.150000. The bug has been seen in certain
2198 versions of glibc, release 2.2.2 is known to be okay.
2199 "d_modflproto"
2201 From d_modfl.U:
2202 This symbol, if defined, indicates that the system provides a
2204 prototype for the modfl() function. Otherwise, it is up to the
2205 program to supply one. C99 says it should be long double
2206 modfl(long double, long double *);
2207 "d_mprotect"
2209 From d_mprotect.U:
2210 This variable conditionally defines "HAS_MPROTECT" if mprotect() is
2212 available to modify the access protection of a memory mapped file.
2213 "d_msg"
2215 From d_msg.U:
2216 This variable conditionally defines the "HAS_MSG" symbol, which
2218 indicates that the entire msg*(2) library is present.
2219 "d_msg_ctrunc"
2221 From d_socket.U:
2222 This variable conditionally defines the "HAS_MSG_CTRUNC" symbol,
2224 which indicates that the "MSG_CTRUNC" is available. #ifdef is not
2225 enough because it may be an enum, glibc has been known to do this.
2226 "d_msg_dontroute"
2228 From d_socket.U:
2229 This variable conditionally defines the "HAS_MSG_DONTROUTE" symbol,
2231 which indicates that the "MSG_DONTROUTE" is available. #ifdef is
2232 not enough because it may be an enum, glibc has been known to do
2233 this.
2234 "d_msg_oob"
2236 From d_socket.U:
2237 This variable conditionally defines the "HAS_MSG_OOB" symbol, which
2239 indicates that the "MSG_OOB" is available. #ifdef is not enough
2240 because it may be an enum, glibc has been known to do this.
2241 "d_msg_peek"
2243 From d_socket.U:
2244 This variable conditionally defines the "HAS_MSG_PEEK" symbol,
2246 which indicates that the "MSG_PEEK" is available. #ifdef is not
2247 enough because it may be an enum, glibc has been known to do this.
2248 "d_msg_proxy"
2250 From d_socket.U:
2251 This variable conditionally defines the "HAS_MSG_PROXY" symbol,
2253 which indicates that the "MSG_PROXY" is available. #ifdef is not
2254 enough because it may be an enum, glibc has been known to do this.
2255 "d_msgctl"
2257 From d_msgctl.U:
2258 This variable conditionally defines the "HAS_MSGCTL" symbol, which
2260 indicates to the C program that the msgctl() routine is available.
2261 "d_msgget"
2263 From d_msgget.U:
2264 This variable conditionally defines the "HAS_MSGGET" symbol, which
2266 indicates to the C program that the msgget() routine is available.
2267 "d_msghdr_s"
2269 From d_msghdr_s.U:
2270 This variable conditionally defines the "HAS_STRUCT_MSGHDR" symbol,
2272 which indicates that the struct msghdr is supported.
2273 "d_msgrcv"
2275 From d_msgrcv.U:
2276 This variable conditionally defines the "HAS_MSGRCV" symbol, which
2278 indicates to the C program that the msgrcv() routine is available.
2279 "d_msgsnd"
2281 From d_msgsnd.U:
2282 This variable conditionally defines the "HAS_MSGSND" symbol, which
2284 indicates to the C program that the msgsnd() routine is available.
2285 "d_msync"
2287 From d_msync.U:
2288 This variable conditionally defines "HAS_MSYNC" if msync() is
2290 available to synchronize a mapped file.
2291 "d_munmap"
2293 From d_munmap.U:
2294 This variable conditionally defines "HAS_MUNMAP" if munmap() is
2296 available to unmap a region mapped by mmap().
2297 "d_mymalloc"
2299 From mallocsrc.U:
2300 This variable conditionally defines "MYMALLOC" in case other parts
2302 of the source want to take special action if "MYMALLOC" is used.
2303 This may include different sorts of profiling or error detection.
2304 "d_ndbm"
2306 From i_ndbm.U:
2307 This variable conditionally defines the "HAS_NDBM" symbol, which
2309 indicates that both the ndbm.h include file and an appropriate ndbm
2310 library exist. Consult the different i_*ndbm variables to find out
2311 the actual include location. Sometimes, a system has the header
2312 file but not the library. This variable will only be set if the
2313 system has both.
2314 "d_ndbm_h_uses_prototypes"
2316 From i_ndbm.U:
2317 This variable conditionally defines the "NDBM_H_USES_PROTOTYPES"
2319 symbol, which indicates that the ndbm.h include file uses real
2320 "ANSI" C prototypes instead of K&R style function declarations. K&R
2321 style declarations are unsupported in C++, so the include file
2322 requires special handling when using a C++ compiler and this
2323 variable is undefined. Consult the different
2324 d_*ndbm_h_uses_prototypes variables to get the same information for
2325 alternative ndbm.h include files.
2326 "d_nice"
2328 From d_nice.U:
2329 This variable conditionally defines the "HAS_NICE" symbol, which
2331 indicates to the C program that the nice() routine is available.
2332 "d_nl_langinfo"
2334 From d_nl_langinfo.U:
2335 This variable conditionally defines the "HAS_NL_LANGINFO" symbol,
2337 which indicates to the C program that the nl_langinfo() routine is
2338 available.
2339 "d_nv_preserves_uv"
2341 From perlxv.U:
2342 This variable indicates whether a variable of type nvtype can
2344 preserve all the bits a variable of type uvtype.
2345 "d_nv_zero_is_allbits_zero"
2347 From perlxv.U:
2348 This variable indicates whether a variable of type nvtype stores
2350 0.0 in memory as all bits zero.
2351 "d_off64_t"
2353 From d_off64_t.U:
2354 This symbol will be defined if the C compiler supports off64_t.
2356 "d_old_pthread_create_joinable"
2358 From d_pthrattrj.U:
2359 This variable conditionally defines pthread_create_joinable. undef
2361 if pthread.h defines "PTHREAD_CREATE_JOINABLE".
2362 "d_oldpthreads"
2364 From usethreads.U:
2365 This variable conditionally defines the "OLD_PTHREADS_API" symbol,
2367 and indicates that Perl should be built to use the old draft
2368 "POSIX" threads "API". This is only potentially meaningful if
2369 usethreads is set.
2370 "d_oldsock"
2372 From d_socket.U:
2373 This variable conditionally defines the "OLDSOCKET" symbol, which
2375 indicates that the "BSD" socket interface is based on 4.1c and not
2376 4.2.
2377 "d_open3"
2379 From d_open3.U:
2380 This variable conditionally defines the HAS_OPEN3 manifest
2382 constant, which indicates to the C program that the 3 argument
2383 version of the open(2) function is available.
2384 "d_pathconf"
2386 From d_pathconf.U:
2387 This variable conditionally defines the "HAS_PATHCONF" symbol,
2389 which indicates to the C program that the pathconf() routine is
2390 available to determine file-system related limits and options
2391 associated with a given filename.
2392 "d_pause"
2394 From d_pause.U:
2395 This variable conditionally defines the "HAS_PAUSE" symbol, which
2397 indicates to the C program that the pause() routine is available to
2398 suspend a process until a signal is received.
2399 "d_perl_otherlibdirs"
2401 From otherlibdirs.U:
2402 This variable conditionally defines "PERL_OTHERLIBDIRS", which
2404 contains a colon-separated set of paths for the perl binary to
2405 include in @"INC". See also otherlibdirs.
2406 "d_phostname"
2408 From d_gethname.U:
2409 This variable conditionally defines the "HAS_PHOSTNAME" symbol,
2411 which contains the shell command which, when fed to popen(), may be
2412 used to derive the host name.
2413 "d_pipe"
2415 From d_pipe.U:
2416 This variable conditionally defines the "HAS_PIPE" symbol, which
2418 indicates to the C program that the pipe() routine is available to
2419 create an inter-process channel.
2420 "d_poll"
2422 From d_poll.U:
2423 This variable conditionally defines the "HAS_POLL" symbol, which
2425 indicates to the C program that the poll() routine is available to
2426 poll active file descriptors.
2427 "d_portable"
2429 From d_portable.U:
2430 This variable conditionally defines the "PORTABLE" symbol, which
2432 indicates to the C program that it should not assume that it is
2433 running on the machine it was compiled on.
2434 "d_prctl"
2436 From d_prctl.U:
2437 This variable conditionally defines the "HAS_PRCTL" symbol, which
2439 indicates to the C program that the prctl() routine is available.
2440 "d_prctl_set_name"
2442 From d_prctl.U:
2443 This variable conditionally defines the "HAS_PRCTL_SET_NAME"
2445 symbol, which indicates to the C program that the prctl() routine
2446 supports the "PR_SET_NAME" option.
2447 "d_PRId64"
2449 From quadfio.U:
2450 This variable conditionally defines the PERL_PRId64 symbol, which
2452 indicates that stdio has a symbol to print 64-bit decimal numbers.
2453 "d_PRIeldbl"
2455 From longdblfio.U:
2456 This variable conditionally defines the PERL_PRIfldbl symbol, which
2458 indicates that stdio has a symbol to print long doubles.
2459 "d_PRIEUldbl"
2461 From longdblfio.U:
2462 This variable conditionally defines the PERL_PRIfldbl symbol, which
2464 indicates that stdio has a symbol to print long doubles. The "U"
2465 in the name is to separate this from d_PRIeldbl so that even case-
2466 blind systems can see the difference.
2467 "d_PRIfldbl"
2469 From longdblfio.U:
2470 This variable conditionally defines the PERL_PRIfldbl symbol, which
2472 indicates that stdio has a symbol to print long doubles.
2473 "d_PRIFUldbl"
2475 From longdblfio.U:
2476 This variable conditionally defines the PERL_PRIfldbl symbol, which
2478 indicates that stdio has a symbol to print long doubles. The "U"
2479 in the name is to separate this from d_PRIfldbl so that even case-
2480 blind systems can see the difference.
2481 "d_PRIgldbl"
2483 From longdblfio.U:
2484 This variable conditionally defines the PERL_PRIfldbl symbol, which
2486 indicates that stdio has a symbol to print long doubles.
2487 "d_PRIGUldbl"
2489 From longdblfio.U:
2490 This variable conditionally defines the PERL_PRIfldbl symbol, which
2492 indicates that stdio has a symbol to print long doubles. The "U"
2493 in the name is to separate this from d_PRIgldbl so that even case-
2494 blind systems can see the difference.
2495 "d_PRIi64"
2497 From quadfio.U:
2498 This variable conditionally defines the PERL_PRIi64 symbol, which
2500 indicates that stdio has a symbol to print 64-bit decimal numbers.
2501 "d_printf_format_null"
2503 From d_attribut.U:
2504 This variable conditionally defines "PRINTF_FORMAT_NULL_OK", which
2506 indicates the C compiler allows printf-like formats to be null.
2507 "d_PRIo64"
2509 From quadfio.U:
2510 This variable conditionally defines the PERL_PRIo64 symbol, which
2512 indicates that stdio has a symbol to print 64-bit octal numbers.
2513 "d_PRIu64"
2515 From quadfio.U:
2516 This variable conditionally defines the PERL_PRIu64 symbol, which
2518 indicates that stdio has a symbol to print 64-bit unsigned decimal
2519 numbers.
2520 "d_PRIx64"
2522 From quadfio.U:
2523 This variable conditionally defines the PERL_PRIx64 symbol, which
2525 indicates that stdio has a symbol to print 64-bit hexadecimal
2526 numbers.
2527 "d_PRIXU64"
2529 From quadfio.U:
2530 This variable conditionally defines the PERL_PRIXU64 symbol, which
2532 indicates that stdio has a symbol to print 64-bit hExADECimAl
2533 numbers. The "U" in the name is to separate this from d_PRIx64 so
2534 that even case-blind systems can see the difference.
2535 "d_procselfexe"
2537 From d_procselfexe.U:
2538 Defined if $procselfexe is symlink to the absolute pathname of the
2540 executing program.
2541 "d_pseudofork"
2543 From d_vfork.U:
2544 This variable conditionally defines the "HAS_PSEUDOFORK" symbol,
2546 which indicates that an emulation of the fork routine is available.
2547 "d_pthread_atfork"
2549 From d_pthread_atfork.U:
2550 This variable conditionally defines the "HAS_PTHREAD_ATFORK"
2552 symbol, which indicates to the C program that the pthread_atfork()
2553 routine is available.
2554 "d_pthread_attr_setscope"
2556 From d_pthread_attr_ss.U:
2557 This variable conditionally defines "HAS_PTHREAD_ATTR_SETSCOPE" if
2559 pthread_attr_setscope() is available to set the contention scope
2560 attribute of a thread attribute object.
2561 "d_pthread_yield"
2563 From d_pthread_y.U:
2564 This variable conditionally defines the "HAS_PTHREAD_YIELD" symbol
2566 if the pthread_yield routine is available to yield the execution of
2567 the current thread.
2568 "d_pwage"
2570 From i_pwd.U:
2571 This variable conditionally defines "PWAGE", which indicates that
2573 struct passwd contains pw_age.
2574 "d_pwchange"
2576 From i_pwd.U:
2577 This variable conditionally defines "PWCHANGE", which indicates
2579 that struct passwd contains pw_change.
2580 "d_pwclass"
2582 From i_pwd.U:
2583 This variable conditionally defines "PWCLASS", which indicates that
2585 struct passwd contains pw_class.
2586 "d_pwcomment"
2588 From i_pwd.U:
2589 This variable conditionally defines "PWCOMMENT", which indicates
2591 that struct passwd contains pw_comment.
2592 "d_pwexpire"
2594 From i_pwd.U:
2595 This variable conditionally defines "PWEXPIRE", which indicates
2597 that struct passwd contains pw_expire.
2598 "d_pwgecos"
2600 From i_pwd.U:
2601 This variable conditionally defines "PWGECOS", which indicates that
2603 struct passwd contains pw_gecos.
2604 "d_pwpasswd"
2606 From i_pwd.U:
2607 This variable conditionally defines "PWPASSWD", which indicates
2609 that struct passwd contains pw_passwd.
2610 "d_pwquota"
2612 From i_pwd.U:
2613 This variable conditionally defines "PWQUOTA", which indicates that
2615 struct passwd contains pw_quota.
2616 "d_qgcvt"
2618 From d_qgcvt.U:
2619 This variable conditionally defines the "HAS_QGCVT" symbol, which
2621 indicates to the C program that the qgcvt() routine is available.
2622 "d_quad"
2624 From quadtype.U:
2625 This variable, if defined, tells that there's a 64-bit integer
2627 type, quadtype.
2628 "d_random_r"
2630 From d_random_r.U:
2631 This variable conditionally defines the "HAS_RANDOM_R" symbol,
2633 which indicates to the C program that the random_r() routine is
2634 available.
2635 "d_readdir"
2637 From d_readdir.U:
2638 This variable conditionally defines "HAS_READDIR" if readdir() is
2640 available to read directory entries.
2641 "d_readdir64_r"
2643 From d_readdir64_r.U:
2644 This variable conditionally defines the HAS_READDIR64_R symbol,
2646 which indicates to the C program that the readdir64_r() routine is
2647 available.
2648 "d_readdir_r"
2650 From d_readdir_r.U:
2651 This variable conditionally defines the "HAS_READDIR_R" symbol,
2653 which indicates to the C program that the readdir_r() routine is
2654 available.
2655 "d_readlink"
2657 From d_readlink.U:
2658 This variable conditionally defines the "HAS_READLINK" symbol,
2660 which indicates to the C program that the readlink() routine is
2661 available to read the value of a symbolic link.
2662 "d_readv"
2664 From d_readv.U:
2665 This variable conditionally defines the "HAS_READV" symbol, which
2667 indicates to the C program that the readv() routine is available.
2668 "d_recvmsg"
2670 From d_recvmsg.U:
2671 This variable conditionally defines the "HAS_RECVMSG" symbol, which
2673 indicates to the C program that the recvmsg() routine is available.
2674 "d_rename"
2676 From d_rename.U:
2677 This variable conditionally defines the "HAS_RENAME" symbol, which
2679 indicates to the C program that the rename() routine is available
2680 to rename files.
2681 "d_rewinddir"
2683 From d_readdir.U:
2684 This variable conditionally defines "HAS_REWINDDIR" if rewinddir()
2686 is available.
2687 "d_rmdir"
2689 From d_rmdir.U:
2690 This variable conditionally defines "HAS_RMDIR" if rmdir() is
2692 available to remove directories.
2693 "d_safebcpy"
2695 From d_safebcpy.U:
2696 This variable conditionally defines the "HAS_SAFE_BCOPY" symbol if
2698 the bcopy() routine can do overlapping copies. Normally, you
2699 should probably use memmove().
2700 "d_safemcpy"
2702 From d_safemcpy.U:
2703 This variable conditionally defines the "HAS_SAFE_MEMCPY" symbol if
2705 the memcpy() routine can do overlapping copies. For overlapping
2706 copies, memmove() should be used, if available.
2707 "d_sanemcmp"
2709 From d_sanemcmp.U:
2710 This variable conditionally defines the "HAS_SANE_MEMCMP" symbol if
2712 the memcpy() routine is available and can be used to compare
2713 relative magnitudes of chars with their high bits set.
2714 "d_sbrkproto"
2716 From d_sbrkproto.U:
2717 This variable conditionally defines the "HAS_SBRK_PROTO" symbol,
2719 which indicates to the C program that the system provides a
2720 prototype for the sbrk() function. Otherwise, it is up to the
2721 program to supply one.
2722 "d_scalbnl"
2724 From d_scalbnl.U:
2725 This variable conditionally defines the "HAS_SCALBNL" symbol, which
2727 indicates to the C program that the scalbnl() routine is available.
2728 If ilogbl is also present we can emulate frexpl.
2729 "d_sched_yield"
2731 From d_pthread_y.U:
2732 This variable conditionally defines the "HAS_SCHED_YIELD" symbol if
2734 the sched_yield routine is available to yield the execution of the
2735 current thread.
2736 "d_scm_rights"
2738 From d_socket.U:
2739 This variable conditionally defines the "HAS_SCM_RIGHTS" symbol,
2741 which indicates that the "SCM_RIGHTS" is available. #ifdef is not
2742 enough because it may be an enum, glibc has been known to do this.
2743 "d_SCNfldbl"
2745 From longdblfio.U:
2746 This variable conditionally defines the PERL_PRIfldbl symbol, which
2748 indicates that stdio has a symbol to scan long doubles.
2749 "d_seekdir"
2751 From d_readdir.U:
2752 This variable conditionally defines "HAS_SEEKDIR" if seekdir() is
2754 available.
2755 "d_select"
2757 From d_select.U:
2758 This variable conditionally defines "HAS_SELECT" if select() is
2760 available to select active file descriptors. A <sys/time.h>
2761 inclusion may be necessary for the timeout field.
2762 "d_sem"
2764 From d_sem.U:
2765 This variable conditionally defines the "HAS_SEM" symbol, which
2767 indicates that the entire sem*(2) library is present.
2768 "d_semctl"
2770 From d_semctl.U:
2771 This variable conditionally defines the "HAS_SEMCTL" symbol, which
2773 indicates to the C program that the semctl() routine is available.
2774 "d_semctl_semid_ds"
2776 From d_union_semun.U:
2777 This variable conditionally defines "USE_SEMCTL_SEMID_DS", which
2779 indicates that struct semid_ds * is to be used for semctl
2780 "IPC_STAT".
2781 "d_semctl_semun"
2783 From d_union_semun.U:
2784 This variable conditionally defines "USE_SEMCTL_SEMUN", which
2786 indicates that union semun is to be used for semctl "IPC_STAT".
2787 "d_semget"
2789 From d_semget.U:
2790 This variable conditionally defines the "HAS_SEMGET" symbol, which
2792 indicates to the C program that the semget() routine is available.
2793 "d_semop"
2795 From d_semop.U:
2796 This variable conditionally defines the "HAS_SEMOP" symbol, which
2798 indicates to the C program that the semop() routine is available.
2799 "d_sendmsg"
2801 From d_sendmsg.U:
2802 This variable conditionally defines the "HAS_SENDMSG" symbol, which
2804 indicates to the C program that the sendmsg() routine is available.
2805 "d_setegid"
2807 From d_setegid.U:
2808 This variable conditionally defines the "HAS_SETEGID" symbol, which
2810 indicates to the C program that the setegid() routine is available
2811 to change the effective gid of the current program.
2812 "d_seteuid"
2814 From d_seteuid.U:
2815 This variable conditionally defines the "HAS_SETEUID" symbol, which
2817 indicates to the C program that the seteuid() routine is available
2818 to change the effective uid of the current program.
2819 "d_setgrent"
2821 From d_setgrent.U:
2822 This variable conditionally defines the "HAS_SETGRENT" symbol,
2824 which indicates to the C program that the setgrent() routine is
2825 available for initializing sequential access to the group database.
2826 "d_setgrent_r"
2828 From d_setgrent_r.U:
2829 This variable conditionally defines the "HAS_SETGRENT_R" symbol,
2831 which indicates to the C program that the setgrent_r() routine is
2832 available.
2833 "d_setgrps"
2835 From d_setgrps.U:
2836 This variable conditionally defines the "HAS_SETGROUPS" symbol,
2838 which indicates to the C program that the setgroups() routine is
2839 available to set the list of process groups.
2840 "d_sethent"
2842 From d_sethent.U:
2843 This variable conditionally defines "HAS_SETHOSTENT" if
2845 sethostent() is available.
2846 "d_sethostent_r"
2848 From d_sethostent_r.U:
2849 This variable conditionally defines the "HAS_SETHOSTENT_R" symbol,
2851 which indicates to the C program that the sethostent_r() routine is
2852 available.
2853 "d_setitimer"
2855 From d_setitimer.U:
2856 This variable conditionally defines the "HAS_SETITIMER" symbol,
2858 which indicates to the C program that the setitimer() routine is
2859 available.
2860 "d_setlinebuf"
2862 From d_setlnbuf.U:
2863 This variable conditionally defines the "HAS_SETLINEBUF" symbol,
2865 which indicates to the C program that the setlinebuf() routine is
2866 available to change stderr or stdout from block-buffered or
2867 unbuffered to a line-buffered mode.
2868 "d_setlocale"
2870 From d_setlocale.U:
2871 This variable conditionally defines "HAS_SETLOCALE" if setlocale()
2873 is available to handle locale-specific ctype implementations.
2874 "d_setlocale_r"
2876 From d_setlocale_r.U:
2877 This variable conditionally defines the "HAS_SETLOCALE_R" symbol,
2879 which indicates to the C program that the setlocale_r() routine is
2880 available.
2881 "d_setnent"
2883 From d_setnent.U:
2884 This variable conditionally defines "HAS_SETNETENT" if setnetent()
2886 is available.
2887 "d_setnetent_r"
2889 From d_setnetent_r.U:
2890 This variable conditionally defines the "HAS_SETNETENT_R" symbol,
2892 which indicates to the C program that the setnetent_r() routine is
2893 available.
2894 "d_setpent"
2896 From d_setpent.U:
2897 This variable conditionally defines "HAS_SETPROTOENT" if
2899 setprotoent() is available.
2900 "d_setpgid"
2902 From d_setpgid.U:
2903 This variable conditionally defines the "HAS_SETPGID" symbol if the
2905 setpgid(pid, gpid) function is available to set process group "ID".
2906 "d_setpgrp"
2908 From d_setpgrp.U:
2909 This variable conditionally defines "HAS_SETPGRP" if setpgrp() is
2911 available to set the current process group.
2912 "d_setpgrp2"
2914 From d_setpgrp2.U:
2915 This variable conditionally defines the HAS_SETPGRP2 symbol, which
2917 indicates to the C program that the setpgrp2() (as in DG/"UX")
2918 routine is available to set the current process group.
2919 "d_setprior"
2921 From d_setprior.U:
2922 This variable conditionally defines "HAS_SETPRIORITY" if
2924 setpriority() is available to set a process's priority.
2925 "d_setproctitle"
2927 From d_setproctitle.U:
2928 This variable conditionally defines the "HAS_SETPROCTITLE" symbol,
2930 which indicates to the C program that the setproctitle() routine is
2931 available.
2932 "d_setprotoent_r"
2934 From d_setprotoent_r.U:
2935 This variable conditionally defines the "HAS_SETPROTOENT_R" symbol,
2937 which indicates to the C program that the setprotoent_r() routine
2938 is available.
2939 "d_setpwent"
2941 From d_setpwent.U:
2942 This variable conditionally defines the "HAS_SETPWENT" symbol,
2944 which indicates to the C program that the setpwent() routine is
2945 available for initializing sequential access to the passwd
2946 database.
2947 "d_setpwent_r"
2949 From d_setpwent_r.U:
2950 This variable conditionally defines the "HAS_SETPWENT_R" symbol,
2952 which indicates to the C program that the setpwent_r() routine is
2953 available.
2954 "d_setregid"
2956 From d_setregid.U:
2957 This variable conditionally defines "HAS_SETREGID" if setregid() is
2959 available to change the real and effective gid of the current
2960 process.
2961 "d_setresgid"
2963 From d_setregid.U:
2964 This variable conditionally defines "HAS_SETRESGID" if setresgid()
2966 is available to change the real, effective and saved gid of the
2967 current process.
2968 "d_setresuid"
2970 From d_setreuid.U:
2971 This variable conditionally defines "HAS_SETREUID" if setresuid()
2973 is available to change the real, effective and saved uid of the
2974 current process.
2975 "d_setreuid"
2977 From d_setreuid.U:
2978 This variable conditionally defines "HAS_SETREUID" if setreuid() is
2980 available to change the real and effective uid of the current
2981 process.
2982 "d_setrgid"
2984 From d_setrgid.U:
2985 This variable conditionally defines the "HAS_SETRGID" symbol, which
2987 indicates to the C program that the setrgid() routine is available
2988 to change the real gid of the current program.
2989 "d_setruid"
2991 From d_setruid.U:
2992 This variable conditionally defines the "HAS_SETRUID" symbol, which
2994 indicates to the C program that the setruid() routine is available
2995 to change the real uid of the current program.
2996 "d_setsent"
2998 From d_setsent.U:
2999 This variable conditionally defines "HAS_SETSERVENT" if
3001 setservent() is available.
3002 "d_setservent_r"
3004 From d_setservent_r.U:
3005 This variable conditionally defines the "HAS_SETSERVENT_R" symbol,
3007 which indicates to the C program that the setservent_r() routine is
3008 available.
3009 "d_setsid"
3011 From d_setsid.U:
3012 This variable conditionally defines "HAS_SETSID" if setsid() is
3014 available to set the process group "ID".
3015 "d_setvbuf"
3017 From d_setvbuf.U:
3018 This variable conditionally defines the "HAS_SETVBUF" symbol, which
3020 indicates to the C program that the setvbuf() routine is available
3021 to change buffering on an open stdio stream.
3022 "d_sfio"
3024 From d_sfio.U:
3025 This variable conditionally defines the "USE_SFIO" symbol, and
3027 indicates whether sfio is available (and should be used).
3028 "d_shm"
3030 From d_shm.U:
3031 This variable conditionally defines the "HAS_SHM" symbol, which
3033 indicates that the entire shm*(2) library is present.
3034 "d_shmat"
3036 From d_shmat.U:
3037 This variable conditionally defines the "HAS_SHMAT" symbol, which
3039 indicates to the C program that the shmat() routine is available.
3040 "d_shmatprototype"
3042 From d_shmat.U:
3043 This variable conditionally defines the "HAS_SHMAT_PROTOTYPE"
3045 symbol, which indicates that sys/shm.h has a prototype for shmat.
3046 "d_shmctl"
3048 From d_shmctl.U:
3049 This variable conditionally defines the "HAS_SHMCTL" symbol, which
3051 indicates to the C program that the shmctl() routine is available.
3052 "d_shmdt"
3054 From d_shmdt.U:
3055 This variable conditionally defines the "HAS_SHMDT" symbol, which
3057 indicates to the C program that the shmdt() routine is available.
3058 "d_shmget"
3060 From d_shmget.U:
3061 This variable conditionally defines the "HAS_SHMGET" symbol, which
3063 indicates to the C program that the shmget() routine is available.
3064 "d_sigaction"
3066 From d_sigaction.U:
3067 This variable conditionally defines the "HAS_SIGACTION" symbol,
3069 which indicates that the Vr4 sigaction() routine is available.
3070 "d_signbit"
3072 From d_signbit.U:
3073 This variable conditionally defines the "HAS_SIGNBIT" symbol, which
3075 indicates to the C program that the signbit() routine is available
3076 and safe to use with perl's intern "NV" type.
3077 "d_sigprocmask"
3079 From d_sigprocmask.U:
3080 This variable conditionally defines "HAS_SIGPROCMASK" if
3082 sigprocmask() is available to examine or change the signal mask of
3083 the calling process.
3084 "d_sigsetjmp"
3086 From d_sigsetjmp.U:
3087 This variable conditionally defines the "HAS_SIGSETJMP" symbol,
3089 which indicates that the sigsetjmp() routine is available to call
3090 setjmp() and optionally save the process's signal mask.
3091 "d_sin6_scope_id"
3093 From d_socket.U:
3094 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol,
3096 which indicates that a struct sockaddr_in6 structure has the
3097 sin6_scope_id member.
3098 "d_sitearch"
3100 From sitearch.U:
3101 This variable conditionally defines "SITEARCH" to hold the pathname
3103 of architecture-dependent library files for $package. If $sitearch
3104 is the same as $archlib, then this is set to undef.
3105 "d_snprintf"
3107 From d_snprintf.U:
3108 This variable conditionally defines the "HAS_SNPRINTF" symbol,
3110 which indicates to the C program that the snprintf () library
3111 function is available.
3112 "d_sockaddr_in6"
3114 From d_socket.U:
3115 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol,
3117 which indicates the availability of a struct sockaddr_in6.
3118 "d_sockaddr_sa_len"
3120 From d_socket.U:
3121 This variable conditionally defines the "HAS_SOCKADDR_SA_LEN"
3123 symbol, which indicates that a struct sockaddr structure has the
3124 sa_len member.
3125 "d_sockatmark"
3127 From d_sockatmark.U:
3128 This variable conditionally defines the "HAS_SOCKATMARK" symbol,
3130 which indicates to the C program that the sockatmark() routine is
3131 available.
3132 "d_sockatmarkproto"
3134 From d_sockatmarkproto.U:
3135 This variable conditionally defines the "HAS_SOCKATMARK_PROTO"
3137 symbol, which indicates to the C program that the system provides a
3138 prototype for the sockatmark() function. Otherwise, it is up to
3139 the program to supply one.
3140 "d_socket"
3142 From d_socket.U:
3143 This variable conditionally defines "HAS_SOCKET", which indicates
3145 that the "BSD" socket interface is supported.
3146 "d_socklen_t"
3148 From d_socklen_t.U:
3149 This symbol will be defined if the C compiler supports socklen_t.
3151 "d_sockpair"
3153 From d_socket.U:
3154 This variable conditionally defines the "HAS_SOCKETPAIR" symbol,
3156 which indicates that the "BSD" socketpair() is supported.
3157 "d_socks5_init"
3159 From d_socks5_init.U:
3160 This variable conditionally defines the HAS_SOCKS5_INIT symbol,
3162 which indicates to the C program that the socks5_init() routine is
3163 available.
3164 "d_sprintf_returns_strlen"
3166 From d_sprintf_len.U:
3167 This variable defines whether sprintf returns the length of the
3169 string (as per the "ANSI" spec). Some C libraries retain
3170 compatibility with pre-"ANSI" C and return a pointer to the passed
3171 in buffer; for these this variable will be undef.
3172 "d_sqrtl"
3174 From d_sqrtl.U:
3175 This variable conditionally defines the "HAS_SQRTL" symbol, which
3177 indicates to the C program that the sqrtl() routine is available.
3178 "d_srand48_r"
3180 From d_srand48_r.U:
3181 This variable conditionally defines the HAS_SRAND48_R symbol, which
3183 indicates to the C program that the srand48_r() routine is
3184 available.
3185 "d_srandom_r"
3187 From d_srandom_r.U:
3188 This variable conditionally defines the "HAS_SRANDOM_R" symbol,
3190 which indicates to the C program that the srandom_r() routine is
3191 available.
3192 "d_sresgproto"
3194 From d_sresgproto.U:
3195 This variable conditionally defines the "HAS_SETRESGID_PROTO"
3197 symbol, which indicates to the C program that the system provides a
3198 prototype for the setresgid() function. Otherwise, it is up to the
3199 program to supply one.
3200 "d_sresuproto"
3202 From d_sresuproto.U:
3203 This variable conditionally defines the "HAS_SETRESUID_PROTO"
3205 symbol, which indicates to the C program that the system provides a
3206 prototype for the setresuid() function. Otherwise, it is up to the
3207 program to supply one.
3208 "d_statblks"
3210 From d_statblks.U:
3211 This variable conditionally defines "USE_STAT_BLOCKS" if this
3213 system has a stat structure declaring st_blksize and st_blocks.
3214 "d_statfs_f_flags"
3216 From d_statfs_f_flags.U:
3217 This variable conditionally defines the "HAS_STRUCT_STATFS_F_FLAGS"
3219 symbol, which indicates to struct statfs from has f_flags member.
3220 This kind of struct statfs is coming from sys/mount.h ("BSD"), not
3221 from sys/statfs.h ("SYSV").
3222 "d_statfs_s"
3224 From d_statfs_s.U:
3225 This variable conditionally defines the "HAS_STRUCT_STATFS" symbol,
3227 which indicates that the struct statfs is supported.
3228 "d_static_inline"
3230 From d_static_inline.U:
3231 This variable conditionally defines the "HAS_STATIC_INLINE" symbol,
3233 which indicates that the C compiler supports C99-style static
3234 inline. That is, the function can't be called from another
3235 translation unit.
3236 "d_statvfs"
3238 From d_statvfs.U:
3239 This variable conditionally defines the "HAS_STATVFS" symbol, which
3241 indicates to the C program that the statvfs() routine is available.
3242 "d_stdio_cnt_lval"
3244 From d_stdstdio.U:
3245 This variable conditionally defines "STDIO_CNT_LVALUE" if the
3247 "FILE_cnt" macro can be used as an lvalue.
3248 "d_stdio_ptr_lval"
3250 From d_stdstdio.U:
3251 This variable conditionally defines "STDIO_PTR_LVALUE" if the
3253 "FILE_ptr" macro can be used as an lvalue.
3254 "d_stdio_ptr_lval_nochange_cnt"
3256 From d_stdstdio.U:
3257 This symbol is defined if using the "FILE_ptr" macro as an lvalue
3259 to increase the pointer by n leaves File_cnt(fp) unchanged.
3260 "d_stdio_ptr_lval_sets_cnt"
3262 From d_stdstdio.U:
3263 This symbol is defined if using the "FILE_ptr" macro as an lvalue
3265 to increase the pointer by n has the side effect of decreasing the
3266 value of File_cnt(fp) by n.
3267 "d_stdio_stream_array"
3269 From stdio_streams.U:
3270 This variable tells whether there is an array holding the stdio
3272 streams.
3273 "d_stdiobase"
3275 From d_stdstdio.U:
3276 This variable conditionally defines "USE_STDIO_BASE" if this system
3278 has a "FILE" structure declaring a usable _base field (or
3279 equivalent) in stdio.h.
3280 "d_stdstdio"
3282 From d_stdstdio.U:
3283 This variable conditionally defines "USE_STDIO_PTR" if this system
3285 has a "FILE" structure declaring usable _ptr and _cnt fields (or
3286 equivalent) in stdio.h.
3287 "d_strchr"
3289 From d_strchr.U:
3290 This variable conditionally defines "HAS_STRCHR" if strchr() and
3292 strrchr() are available for string searching.
3293 "d_strcoll"
3295 From d_strcoll.U:
3296 This variable conditionally defines "HAS_STRCOLL" if strcoll() is
3298 available to compare strings using collating information.
3299 "d_strctcpy"
3301 From d_strctcpy.U:
3302 This variable conditionally defines the "USE_STRUCT_COPY" symbol,
3304 which indicates to the C program that this C compiler knows how to
3305 copy structures.
3306 "d_strerrm"
3308 From d_strerror.U:
3309 This variable holds what Strerrr is defined as to translate an
3311 error code condition into an error message string. It could be
3312 "strerror" or a more "complex" macro emulating strrror with
3313 sys_errlist[], or the "unknown" string when both strerror and
3314 sys_errlist are missing.
3315 "d_strerror"
3317 From d_strerror.U:
3318 This variable conditionally defines "HAS_STRERROR" if strerror() is
3320 available to translate error numbers to strings.
3321 "d_strerror_r"
3323 From d_strerror_r.U:
3324 This variable conditionally defines the "HAS_STRERROR_R" symbol,
3326 which indicates to the C program that the strerror_r() routine is
3327 available.
3328 "d_strftime"
3330 From d_strftime.U:
3331 This variable conditionally defines the "HAS_STRFTIME" symbol,
3333 which indicates to the C program that the strftime() routine is
3334 available.
3335 "d_strlcat"
3337 From d_strlcat.U:
3338 This variable conditionally defines the "HAS_STRLCAT" symbol, which
3340 indicates to the C program that the strlcat () routine is
3341 available.
3342 "d_strlcpy"
3344 From d_strlcpy.U:
3345 This variable conditionally defines the "HAS_STRLCPY" symbol, which
3347 indicates to the C program that the strlcpy () routine is
3348 available.
3349 "d_strtod"
3351 From d_strtod.U:
3352 This variable conditionally defines the "HAS_STRTOD" symbol, which
3354 indicates to the C program that the strtod() routine is available
3355 to provide better numeric string conversion than atof().
3356 "d_strtol"
3358 From d_strtol.U:
3359 This variable conditionally defines the "HAS_STRTOL" symbol, which
3361 indicates to the C program that the strtol() routine is available
3362 to provide better numeric string conversion than atoi() and
3363 friends.
3364 "d_strtold"
3366 From d_strtold.U:
3367 This variable conditionally defines the "HAS_STRTOLD" symbol, which
3369 indicates to the C program that the strtold() routine is available.
3370 "d_strtoll"
3372 From d_strtoll.U:
3373 This variable conditionally defines the "HAS_STRTOLL" symbol, which
3375 indicates to the C program that the strtoll() routine is available.
3376 "d_strtoq"
3378 From d_strtoq.U:
3379 This variable conditionally defines the "HAS_STRTOQ" symbol, which
3381 indicates to the C program that the strtoq() routine is available.
3382 "d_strtoul"
3384 From d_strtoul.U:
3385 This variable conditionally defines the "HAS_STRTOUL" symbol, which
3387 indicates to the C program that the strtoul() routine is available
3388 to provide conversion of strings to unsigned long.
3389 "d_strtoull"
3391 From d_strtoull.U:
3392 This variable conditionally defines the "HAS_STRTOULL" symbol,
3394 which indicates to the C program that the strtoull() routine is
3395 available.
3396 "d_strtouq"
3398 From d_strtouq.U:
3399 This variable conditionally defines the "HAS_STRTOUQ" symbol, which
3401 indicates to the C program that the strtouq() routine is available.
3402 "d_strxfrm"
3404 From d_strxfrm.U:
3405 This variable conditionally defines "HAS_STRXFRM" if strxfrm() is
3407 available to transform strings.
3408 "d_suidsafe"
3410 From d_dosuid.U:
3411 This variable conditionally defines "SETUID_SCRIPTS_ARE_SECURE_NOW"
3413 if setuid scripts can be secure. This test looks in /dev/fd/.
3414 "d_symlink"
3416 From d_symlink.U:
3417 This variable conditionally defines the "HAS_SYMLINK" symbol, which
3419 indicates to the C program that the symlink() routine is available
3420 to create symbolic links.
3421 "d_syscall"
3423 From d_syscall.U:
3424 This variable conditionally defines "HAS_SYSCALL" if syscall() is
3426 available call arbitrary system calls.
3427 "d_syscallproto"
3429 From d_syscallproto.U:
3430 This variable conditionally defines the "HAS_SYSCALL_PROTO" symbol,
3432 which indicates to the C program that the system provides a
3433 prototype for the syscall() function. Otherwise, it is up to the
3434 program to supply one.
3435 "d_sysconf"
3437 From d_sysconf.U:
3438 This variable conditionally defines the "HAS_SYSCONF" symbol, which
3440 indicates to the C program that the sysconf() routine is available
3441 to determine system related limits and options.
3442 "d_sysernlst"
3444 From d_strerror.U:
3445 This variable conditionally defines "HAS_SYS_ERRNOLIST" if
3447 sys_errnolist[] is available to translate error numbers to the
3448 symbolic name.
3449 "d_syserrlst"
3451 From d_strerror.U:
3452 This variable conditionally defines "HAS_SYS_ERRLIST" if
3454 sys_errlist[] is available to translate error numbers to strings.
3455 "d_system"
3457 From d_system.U:
3458 This variable conditionally defines "HAS_SYSTEM" if system() is
3460 available to issue a shell command.
3461 "d_tcgetpgrp"
3463 From d_tcgtpgrp.U:
3464 This variable conditionally defines the "HAS_TCGETPGRP" symbol,
3466 which indicates to the C program that the tcgetpgrp() routine is
3467 available. to get foreground process group "ID".
3468 "d_tcsetpgrp"
3470 From d_tcstpgrp.U:
3471 This variable conditionally defines the "HAS_TCSETPGRP" symbol,
3473 which indicates to the C program that the tcsetpgrp() routine is
3474 available to set foreground process group "ID".
3475 "d_telldir"
3477 From d_readdir.U:
3478 This variable conditionally defines "HAS_TELLDIR" if telldir() is
3480 available.
3481 "d_telldirproto"
3483 From d_telldirproto.U:
3484 This variable conditionally defines the "HAS_TELLDIR_PROTO" symbol,
3486 which indicates to the C program that the system provides a
3487 prototype for the telldir() function. Otherwise, it is up to the
3488 program to supply one.
3489 "d_time"
3491 From d_time.U:
3492 This variable conditionally defines the "HAS_TIME" symbol, which
3494 indicates that the time() routine exists. The time() routine is
3495 normally provided on "UNIX" systems.
3496 "d_timegm"
3498 From d_timegm.U:
3499 This variable conditionally defines the "HAS_TIMEGM" symbol, which
3501 indicates to the C program that the timegm () routine is available.
3502 "d_times"
3504 From d_times.U:
3505 This variable conditionally defines the "HAS_TIMES" symbol, which
3507 indicates that the times() routine exists. The times() routine is
3508 normally provided on "UNIX" systems. You may have to include
3509 <sys/times.h>.
3510 "d_tm_tm_gmtoff"
3512 From i_time.U:
3513 This variable conditionally defines "HAS_TM_TM_GMTOFF", which
3515 indicates indicates to the C program that the struct tm has the
3516 tm_gmtoff field.
3517 "d_tm_tm_zone"
3519 From i_time.U:
3520 This variable conditionally defines "HAS_TM_TM_ZONE", which
3522 indicates indicates to the C program that the struct tm has the
3523 tm_zone field.
3524 "d_tmpnam_r"
3526 From d_tmpnam_r.U:
3527 This variable conditionally defines the "HAS_TMPNAM_R" symbol,
3529 which indicates to the C program that the tmpnam_r() routine is
3530 available.
3531 "d_truncate"
3533 From d_truncate.U:
3534 This variable conditionally defines "HAS_TRUNCATE" if truncate() is
3536 available to truncate files.
3537 "d_ttyname_r"
3539 From d_ttyname_r.U:
3540 This variable conditionally defines the "HAS_TTYNAME_R" symbol,
3542 which indicates to the C program that the ttyname_r() routine is
3543 available.
3544 "d_tzname"
3546 From d_tzname.U:
3547 This variable conditionally defines "HAS_TZNAME" if tzname[] is
3549 available to access timezone names.
3550 "d_u32align"
3552 From d_u32align.U:
3553 This variable tells whether you must access character data through
3555 U32-aligned pointers.
3556 "d_ualarm"
3558 From d_ualarm.U:
3559 This variable conditionally defines the "HAS_UALARM" symbol, which
3561 indicates to the C program that the ualarm() routine is available.
3562 "d_umask"
3564 From d_umask.U:
3565 This variable conditionally defines the "HAS_UMASK" symbol, which
3567 indicates to the C program that the umask() routine is available.
3568 to set and get the value of the file creation mask.
3569 "d_uname"
3571 From d_gethname.U:
3572 This variable conditionally defines the "HAS_UNAME" symbol, which
3574 indicates to the C program that the uname() routine may be used to
3575 derive the host name.
3576 "d_union_semun"
3578 From d_union_semun.U:
3579 This variable conditionally defines "HAS_UNION_SEMUN" if the union
3581 semun is defined by including <sys/sem.h>.
3582 "d_unordered"
3584 From d_unordered.U:
3585 This variable conditionally defines the "HAS_UNORDERED" symbol,
3587 which indicates to the C program that the unordered() routine is
3588 available.
3589 "d_unsetenv"
3591 From d_unsetenv.U:
3592 This variable conditionally defines the "HAS_UNSETENV" symbol,
3594 which indicates to the C program that the unsetenv () routine is
3595 available.
3596 "d_usleep"
3598 From d_usleep.U:
3599 This variable conditionally defines "HAS_USLEEP" if usleep() is
3601 available to do high granularity sleeps.
3602 "d_usleepproto"
3604 From d_usleepproto.U:
3605 This variable conditionally defines the "HAS_USLEEP_PROTO" symbol,
3607 which indicates to the C program that the system provides a
3608 prototype for the usleep() function. Otherwise, it is up to the
3609 program to supply one.
3610 "d_ustat"
3612 From d_ustat.U:
3613 This variable conditionally defines "HAS_USTAT" if ustat() is
3615 available to query file system statistics by dev_t.
3616 "d_vendorarch"
3618 From vendorarch.U:
3619 This variable conditionally defined "PERL_VENDORARCH".
3621 "d_vendorbin"
3623 From vendorbin.U:
3624 This variable conditionally defines "PERL_VENDORBIN".
3626 "d_vendorlib"
3628 From vendorlib.U:
3629 This variable conditionally defines "PERL_VENDORLIB".
3631 "d_vendorscript"
3633 From vendorscript.U:
3634 This variable conditionally defines "PERL_VENDORSCRIPT".
3636 "d_vfork"
3638 From d_vfork.U:
3639 This variable conditionally defines the "HAS_VFORK" symbol, which
3641 indicates the vfork() routine is available.
3642 "d_void_closedir"
3644 From d_closedir.U:
3645 This variable conditionally defines "VOID_CLOSEDIR" if closedir()
3647 does not return a value.
3648 "d_voidsig"
3650 From d_voidsig.U:
3651 This variable conditionally defines "VOIDSIG" if this system
3653 declares "void (*signal(...))()" in signal.h. The old way was to
3654 declare it as "int (*signal(...))()".
3655 "d_voidtty"
3657 From i_sysioctl.U:
3658 This variable conditionally defines "USE_IOCNOTTY" to indicate that
3660 the ioctl() call with "TIOCNOTTY" should be used to void tty
3661 association. Otherwise (on "USG" probably), it is enough to close
3662 the standard file descriptors and do a setpgrp().
3663 "d_volatile"
3665 From d_volatile.U:
3666 This variable conditionally defines the "HASVOLATILE" symbol, which
3668 indicates to the C program that this C compiler knows about the
3669 volatile declaration.
3670 "d_vprintf"
3672 From d_vprintf.U:
3673 This variable conditionally defines the "HAS_VPRINTF" symbol, which
3675 indicates to the C program that the vprintf() routine is available
3676 to printf with a pointer to an argument list.
3677 "d_vsnprintf"
3679 From d_snprintf.U:
3680 This variable conditionally defines the "HAS_VSNPRINTF" symbol,
3682 which indicates to the C program that the vsnprintf () library
3683 function is available.
3684 "d_wait4"
3686 From d_wait4.U:
3687 This variable conditionally defines the HAS_WAIT4 symbol, which
3689 indicates the wait4() routine is available.
3690 "d_waitpid"
3692 From d_waitpid.U:
3693 This variable conditionally defines "HAS_WAITPID" if waitpid() is
3695 available to wait for child process.
3696 "d_wcstombs"
3698 From d_wcstombs.U:
3699 This variable conditionally defines the "HAS_WCSTOMBS" symbol,
3701 which indicates to the C program that the wcstombs() routine is
3702 available to convert wide character strings to multibyte strings.
3703 "d_wctomb"
3705 From d_wctomb.U:
3706 This variable conditionally defines the "HAS_WCTOMB" symbol, which
3708 indicates to the C program that the wctomb() routine is available
3709 to convert a wide character to a multibyte.
3710 "d_writev"
3712 From d_writev.U:
3713 This variable conditionally defines the "HAS_WRITEV" symbol, which
3715 indicates to the C program that the writev() routine is available.
3716 "d_xenix"
3718 From Guess.U:
3719 This variable conditionally defines the symbol "XENIX", which
3721 alerts the C program that it runs under Xenix.
3722 "date"
3724 From Loc.U:
3725 This variable is used internally by Configure to determine the full
3727 pathname (if any) of the date program. After Configure runs, the
3728 value is reset to a plain "date" and is not useful.
3729 "db_hashtype"
3731 From i_db.U:
3732 This variable contains the type of the hash structure element in
3734 the <db.h> header file. In older versions of "DB", it was int,
3735 while in newer ones it is u_int32_t.
3736 "db_prefixtype"
3738 From i_db.U:
3739 This variable contains the type of the prefix structure element in
3741 the <db.h> header file. In older versions of "DB", it was int,
3742 while in newer ones it is size_t.
3743 "db_version_major"
3745 From i_db.U:
3746 This variable contains the major version number of Berkeley "DB"
3748 found in the <db.h> header file.
3749 "db_version_minor"
3751 From i_db.U:
3752 This variable contains the minor version number of Berkeley "DB"
3754 found in the <db.h> header file. For "DB" version 1 this is always
3755 0.
3756 "db_version_patch"
3758 From i_db.U:
3759 This variable contains the patch version number of Berkeley "DB"
3761 found in the <db.h> header file. For "DB" version 1 this is always
3762 0.
3763 "defvoidused"
3765 From voidflags.U:
3766 This variable contains the default value of the "VOIDUSED" symbol
3768 (15).
3769 "direntrytype"
3771 From i_dirent.U:
3772 This symbol is set to "struct direct" or "struct dirent" depending
3774 on whether dirent is available or not. You should use this pseudo
3775 type to portably declare your directory entries.
3776 "dlext"
3778 From dlext.U:
3779 This variable contains the extension that is to be used for the
3781 dynamically loaded modules that perl generaties.
3782 "dlsrc"
3784 From dlsrc.U:
3785 This variable contains the name of the dynamic loading file that
3787 will be used with the package.
3788 "doublesize"
3790 From doublesize.U:
3791 This variable contains the value of the "DOUBLESIZE" symbol, which
3793 indicates to the C program how many bytes there are in a double.
3794 "drand01"
3796 From randfunc.U:
3797 Indicates the macro to be used to generate normalized random
3799 numbers. Uses randfunc, often divided by (double) (((unsigned
3800 long) 1 << randbits)) in order to normalize the result. In C
3801 programs, the macro "Drand01" is mapped to drand01.
3802 "drand48_r_proto"
3804 From d_drand48_r.U:
3805 This variable encodes the prototype of drand48_r. It is zero if
3807 d_drand48_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
3808 of reentr.h if d_drand48_r is defined.
3809 "dtrace"
3811 From usedtrace.U:
3812 This variable holds the location of the dtrace executable.
3814 "dynamic_ext"
3816 From Extensions.U:
3817 This variable holds a list of "XS" extension files we want to link
3819 dynamically into the package. It is used by Makefile.
3820 e
3822 "eagain"
3823 From nblock_io.U:
3824 This variable bears the symbolic errno code set by read() when no
3826 data is present on the file and non-blocking I/O was enabled
3827 (otherwise, read() blocks naturally).
3828 "ebcdic"
3830 From ebcdic.U:
3831 This variable conditionally defines "EBCDIC" if this system uses
3833 "EBCDIC" encoding. Among other things, this means that the
3834 character ranges are not contiguous. See trnl.U
3835 "echo"
3837 From Loc.U:
3838 This variable is used internally by Configure to determine the full
3840 pathname (if any) of the echo program. After Configure runs, the
3841 value is reset to a plain "echo" and is not useful.
3842 "egrep"
3844 From Loc.U:
3845 This variable is used internally by Configure to determine the full
3847 pathname (if any) of the egrep program. After Configure runs, the
3848 value is reset to a plain "egrep" and is not useful.
3849 "emacs"
3851 From Loc.U:
3852 This variable is defined but not used by Configure. The value is
3854 the empty string and is not useful.
3855 "endgrent_r_proto"
3857 From d_endgrent_r.U:
3858 This variable encodes the prototype of endgrent_r. It is zero if
3860 d_endgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3861 macros of reentr.h if d_endgrent_r is defined.
3862 "endhostent_r_proto"
3864 From d_endhostent_r.U:
3865 This variable encodes the prototype of endhostent_r. It is zero if
3867 d_endhostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3868 macros of reentr.h if d_endhostent_r is defined.
3869 "endnetent_r_proto"
3871 From d_endnetent_r.U:
3872 This variable encodes the prototype of endnetent_r. It is zero if
3874 d_endnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3875 macros of reentr.h if d_endnetent_r is defined.
3876 "endprotoent_r_proto"
3878 From d_endprotoent_r.U:
3879 This variable encodes the prototype of endprotoent_r. It is zero
3881 if d_endprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3882 macros of reentr.h if d_endprotoent_r is defined.
3883 "endpwent_r_proto"
3885 From d_endpwent_r.U:
3886 This variable encodes the prototype of endpwent_r. It is zero if
3888 d_endpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3889 macros of reentr.h if d_endpwent_r is defined.
3890 "endservent_r_proto"
3892 From d_endservent_r.U:
3893 This variable encodes the prototype of endservent_r. It is zero if
3895 d_endservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
3896 macros of reentr.h if d_endservent_r is defined.
3897 "eunicefix"
3899 From Init.U:
3900 When running under Eunice this variable contains a command which
3902 will convert a shell script to the proper form of text file for it
3903 to be executable by the shell. On other systems it is a no-op.
3904 "exe_ext"
3906 From Unix.U:
3907 This is an old synonym for _exe.
3909 "expr"
3911 From Loc.U:
3912 This variable is used internally by Configure to determine the full
3914 pathname (if any) of the expr program. After Configure runs, the
3915 value is reset to a plain "expr" and is not useful.
3916 "extensions"
3918 From Extensions.U:
3919 This variable holds a list of all extension files (both "XS" and
3921 non-xs linked into the package. It is propagated to Config.pm and
3922 is typically used to test whether a particular extension is
3923 available.
3924 "extern_C"
3926 From Csym.U:
3927 "ANSI" C requires "extern" where C++ requires 'extern "C"'. This
3929 variable can be used in Configure to do the right thing.
3930 "extras"
3932 From Extras.U:
3933 This variable holds a list of extra modules to install.
3935 f
3937 "fflushall"
3938 From fflushall.U:
3939 This symbol, if defined, tells that to flush all pending stdio
3941 output one must loop through all the stdio file handles stored in
3942 an array and fflush them. Note that if fflushNULL is defined,
3943 fflushall will not even be probed for and will be left undefined.
3944 "fflushNULL"
3946 From fflushall.U:
3947 This symbol, if defined, tells that fflush("NULL") does flush all
3949 pending stdio output.
3950 "find"
3952 From Loc.U:
3953 This variable is defined but not used by Configure. The value is
3955 the empty string and is not useful.
3956 "firstmakefile"
3958 From Unix.U:
3959 This variable defines the first file searched by make. On unix, it
3961 is makefile (then Makefile). On case-insensitive systems, it might
3962 be something else. This is only used to deal with convoluted make
3963 depend tricks.
3964 "flex"
3966 From Loc.U:
3967 This variable is defined but not used by Configure. The value is
3969 the empty string and is not useful.
3970 "fpossize"
3972 From fpossize.U:
3973 This variable contains the size of a fpostype in bytes.
3975 "fpostype"
3977 From fpostype.U:
3978 This variable defines Fpos_t to be something like fpos_t, long,
3980 uint, or whatever type is used to declare file positions in libc.
3981 "freetype"
3983 From mallocsrc.U:
3984 This variable contains the return type of free(). It is usually
3986 void, but occasionally int.
3987 "from"
3989 From Cross.U:
3990 This variable contains the command used by Configure to copy files
3992 from the target host. Useful and available only during Perl build.
3993 The string ":" if not cross-compiling.
3994 "full_ar"
3996 From Loc_ar.U:
3997 This variable contains the full pathname to "ar", whether or not
3999 the user has specified "portability". This is only used in the
4000 Makefile.SH.
4001 "full_csh"
4003 From d_csh.U:
4004 This variable contains the full pathname to "csh", whether or not
4006 the user has specified "portability". This is only used in the
4007 compiled C program, and we assume that all systems which can share
4008 this executable will have the same full pathname to csh.
4009 "full_sed"
4011 From Loc_sed.U:
4012 This variable contains the full pathname to "sed", whether or not
4014 the user has specified "portability". This is only used in the
4015 compiled C program, and we assume that all systems which can share
4016 this executable will have the same full pathname to sed.
4017 g
4019 "gccansipedantic"
4020 From gccvers.U:
4021 If "GNU" cc (gcc) is used, this variable will enable (if set) the
4023 -ansi and -pedantic ccflags for building core files (through cflags
4024 script). (See Porting/pumpkin.pod for full description).
4025 "gccosandvers"
4027 From gccvers.U:
4028 If "GNU" cc (gcc) is used, this variable holds the operating system
4030 and version used to compile gcc. It is set to '' if not gcc, or if
4031 nothing useful can be parsed as the os version.
4032 "gccversion"
4034 From gccvers.U:
4035 If "GNU" cc (gcc) is used, this variable holds 1 or 2 to indicate
4037 whether the compiler is version 1 or 2. This is used in setting
4038 some of the default cflags. It is set to '' if not gcc.
4039 "getgrent_r_proto"
4041 From d_getgrent_r.U:
4042 This variable encodes the prototype of getgrent_r. It is zero if
4044 d_getgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4045 macros of reentr.h if d_getgrent_r is defined.
4046 "getgrgid_r_proto"
4048 From d_getgrgid_r.U:
4049 This variable encodes the prototype of getgrgid_r. It is zero if
4051 d_getgrgid_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4052 macros of reentr.h if d_getgrgid_r is defined.
4053 "getgrnam_r_proto"
4055 From d_getgrnam_r.U:
4056 This variable encodes the prototype of getgrnam_r. It is zero if
4058 d_getgrnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4059 macros of reentr.h if d_getgrnam_r is defined.
4060 "gethostbyaddr_r_proto"
4062 From d_gethostbyaddr_r.U:
4063 This variable encodes the prototype of gethostbyaddr_r. It is zero
4065 if d_gethostbyaddr_r is undef, and one of the
4066 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_gethostbyaddr_r is
4067 defined.
4068 "gethostbyname_r_proto"
4070 From d_gethostbyname_r.U:
4071 This variable encodes the prototype of gethostbyname_r. It is zero
4073 if d_gethostbyname_r is undef, and one of the
4074 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_gethostbyname_r is
4075 defined.
4076 "gethostent_r_proto"
4078 From d_gethostent_r.U:
4079 This variable encodes the prototype of gethostent_r. It is zero if
4081 d_gethostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4082 macros of reentr.h if d_gethostent_r is defined.
4083 "getlogin_r_proto"
4085 From d_getlogin_r.U:
4086 This variable encodes the prototype of getlogin_r. It is zero if
4088 d_getlogin_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4089 macros of reentr.h if d_getlogin_r is defined.
4090 "getnetbyaddr_r_proto"
4092 From d_getnetbyaddr_r.U:
4093 This variable encodes the prototype of getnetbyaddr_r. It is zero
4095 if d_getnetbyaddr_r is undef, and one of the
4096 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getnetbyaddr_r is
4097 defined.
4098 "getnetbyname_r_proto"
4100 From d_getnetbyname_r.U:
4101 This variable encodes the prototype of getnetbyname_r. It is zero
4103 if d_getnetbyname_r is undef, and one of the
4104 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getnetbyname_r is
4105 defined.
4106 "getnetent_r_proto"
4108 From d_getnetent_r.U:
4109 This variable encodes the prototype of getnetent_r. It is zero if
4111 d_getnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4112 macros of reentr.h if d_getnetent_r is defined.
4113 "getprotobyname_r_proto"
4115 From d_getprotobyname_r.U:
4116 This variable encodes the prototype of getprotobyname_r. It is
4118 zero if d_getprotobyname_r is undef, and one of the
4119 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getprotobyname_r is
4120 defined.
4121 "getprotobynumber_r_proto"
4123 From d_getprotobynumber_r.U:
4124 This variable encodes the prototype of getprotobynumber_r. It is
4126 zero if d_getprotobynumber_r is undef, and one of the
4127 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getprotobynumber_r
4128 is defined.
4129 "getprotoent_r_proto"
4131 From d_getprotoent_r.U:
4132 This variable encodes the prototype of getprotoent_r. It is zero
4134 if d_getprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4135 macros of reentr.h if d_getprotoent_r is defined.
4136 "getpwent_r_proto"
4138 From d_getpwent_r.U:
4139 This variable encodes the prototype of getpwent_r. It is zero if
4141 d_getpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4142 macros of reentr.h if d_getpwent_r is defined.
4143 "getpwnam_r_proto"
4145 From d_getpwnam_r.U:
4146 This variable encodes the prototype of getpwnam_r. It is zero if
4148 d_getpwnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4149 macros of reentr.h if d_getpwnam_r is defined.
4150 "getpwuid_r_proto"
4152 From d_getpwuid_r.U:
4153 This variable encodes the prototype of getpwuid_r. It is zero if
4155 d_getpwuid_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4156 macros of reentr.h if d_getpwuid_r is defined.
4157 "getservbyname_r_proto"
4159 From d_getservbyname_r.U:
4160 This variable encodes the prototype of getservbyname_r. It is zero
4162 if d_getservbyname_r is undef, and one of the
4163 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getservbyname_r is
4164 defined.
4165 "getservbyport_r_proto"
4167 From d_getservbyport_r.U:
4168 This variable encodes the prototype of getservbyport_r. It is zero
4170 if d_getservbyport_r is undef, and one of the
4171 "REENTRANT_PROTO_T_ABC" macros of reentr.h if d_getservbyport_r is
4172 defined.
4173 "getservent_r_proto"
4175 From d_getservent_r.U:
4176 This variable encodes the prototype of getservent_r. It is zero if
4178 d_getservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4179 macros of reentr.h if d_getservent_r is defined.
4180 "getspnam_r_proto"
4182 From d_getspnam_r.U:
4183 This variable encodes the prototype of getspnam_r. It is zero if
4185 d_getspnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
4186 macros of reentr.h if d_getspnam_r is defined.
4187 "gidformat"
4189 From gidf.U:
4190 This variable contains the format string used for printing a Gid_t.
4192 "gidsign"
4194 From gidsign.U:
4195 This variable contains the signedness of a gidtype. 1 for
4197 unsigned, -1 for signed.
4198 "gidsize"
4200 From gidsize.U:
4201 This variable contains the size of a gidtype in bytes.
4203 "gidtype"
4205 From gidtype.U:
4206 This variable defines Gid_t to be something like gid_t, int,
4208 ushort, or whatever type is used to declare the return type of
4209 getgid(). Typically, it is the type of group ids in the kernel.
4210 "glibpth"
4212 From libpth.U:
4213 This variable holds the general path (space-separated) used to find
4215 libraries. It may contain directories that do not exist on this
4216 platform, libpth is the cleaned-up version.
4217 "gmake"
4219 From Loc.U:
4220 This variable is used internally by Configure to determine the full
4222 pathname (if any) of the gmake program. After Configure runs, the
4223 value is reset to a plain "gmake" and is not useful.
4224 "gmtime_r_proto"
4226 From d_gmtime_r.U:
4227 This variable encodes the prototype of gmtime_r. It is zero if
4229 d_gmtime_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
4230 of reentr.h if d_gmtime_r is defined.
4231 "gnulibc_version"
4233 From d_gnulibc.U:
4234 This variable contains the version number of the "GNU" C library.
4236 It is usually something like 2.2.5. It is a plain '' if this is
4237 not the "GNU" C library, or if the version is unknown.
4238 "grep"
4240 From Loc.U:
4241 This variable is used internally by Configure to determine the full
4243 pathname (if any) of the grep program. After Configure runs, the
4244 value is reset to a plain "grep" and is not useful.
4245 "groupcat"
4247 From nis.U:
4248 This variable contains a command that produces the text of the
4250 /etc/group file. This is normally "cat /etc/group", but can be
4251 "ypcat group" when "NIS" is used. On some systems, such as os390,
4252 there may be no equivalent command, in which case this variable is
4253 unset.
4254 "groupstype"
4256 From groupstype.U:
4257 This variable defines Groups_t to be something like gid_t, int,
4259 ushort, or whatever type is used for the second argument to
4260 getgroups() and setgroups(). Usually, this is the same as gidtype
4261 (gid_t), but sometimes it isn't.
4262 "gzip"
4264 From Loc.U:
4265 This variable is used internally by Configure to determine the full
4267 pathname (if any) of the gzip program. After Configure runs, the
4268 value is reset to a plain "gzip" and is not useful.
4269 h
4271 "h_fcntl"
4272 From h_fcntl.U:
4273 This is variable gets set in various places to tell i_fcntl that
4275 <fcntl.h> should be included.
4276 "h_sysfile"
4278 From h_sysfile.U:
4279 This is variable gets set in various places to tell i_sys_file that
4281 <sys/file.h> should be included.
4282 "hint"
4284 From Oldconfig.U:
4285 Gives the type of hints used for previous answers. May be one of
4287 "default", "recommended" or "previous".
4288 "hostcat"
4290 From nis.U:
4291 This variable contains a command that produces the text of the
4293 /etc/hosts file. This is normally "cat /etc/hosts", but can be
4294 "ypcat hosts" when "NIS" is used. On some systems, such as os390,
4295 there may be no equivalent command, in which case this variable is
4296 unset.
4297 "html1dir"
4299 From html1dir.U:
4300 This variable contains the name of the directory in which html
4302 source pages are to be put. This directory is for pages that
4303 describe whole programs, not libraries or modules. It is intended
4304 to correspond roughly to section 1 of the Unix manuals.
4305 "html1direxp"
4307 From html1dir.U:
4308 This variable is the same as the html1dir variable, but is filename
4310 expanded at configuration time, for convenient use in makefiles.
4311 "html3dir"
4313 From html3dir.U:
4314 This variable contains the name of the directory in which html
4316 source pages are to be put. This directory is for pages that
4317 describe libraries or modules. It is intended to correspond
4318 roughly to section 3 of the Unix manuals.
4319 "html3direxp"
4321 From html3dir.U:
4322 This variable is the same as the html3dir variable, but is filename
4324 expanded at configuration time, for convenient use in makefiles.
4325 i
4327 "i16size"
4328 From perlxv.U:
4329 This variable is the size of an I16 in bytes.
4331 "i16type"
4333 From perlxv.U:
4334 This variable contains the C type used for Perl's I16.
4336 "i32size"
4338 From perlxv.U:
4339 This variable is the size of an I32 in bytes.
4341 "i32type"
4343 From perlxv.U:
4344 This variable contains the C type used for Perl's I32.
4346 "i64size"
4348 From perlxv.U:
4349 This variable is the size of an I64 in bytes.
4351 "i64type"
4353 From perlxv.U:
4354 This variable contains the C type used for Perl's I64.
4356 "i8size"
4358 From perlxv.U:
4359 This variable is the size of an I8 in bytes.
4361 "i8type"
4363 From perlxv.U:
4364 This variable contains the C type used for Perl's I8.
4366 "i_arpainet"
4368 From i_arpainet.U:
4369 This variable conditionally defines the "I_ARPA_INET" symbol, and
4371 indicates whether a C program should include <arpa/inet.h>.
4372 "i_assert"
4374 From i_assert.U:
4375 This variable conditionally defines the "I_ASSERT" symbol, which
4377 indicates to the C program that <assert.h> exists and could be
4378 included.
4379 "i_bsdioctl"
4381 From i_sysioctl.U:
4382 This variable conditionally defines the "I_SYS_BSDIOCTL" symbol,
4384 which indicates to the C program that <sys/bsdioctl.h> exists and
4385 should be included.
4386 "i_crypt"
4388 From i_crypt.U:
4389 This variable conditionally defines the "I_CRYPT" symbol, and
4391 indicates whether a C program should include <crypt.h>.
4392 "i_db"
4394 From i_db.U:
4395 This variable conditionally defines the "I_DB" symbol, and
4397 indicates whether a C program may include Berkeley's "DB" include
4398 file <db.h>.
4399 "i_dbm"
4401 From i_dbm.U:
4402 This variable conditionally defines the "I_DBM" symbol, which
4404 indicates to the C program that <dbm.h> exists and should be
4405 included.
4406 "i_dirent"
4408 From i_dirent.U:
4409 This variable conditionally defines "I_DIRENT", which indicates to
4411 the C program that it should include <dirent.h>.
4412 "i_dld"
4414 From i_dld.U:
4415 This variable conditionally defines the "I_DLD" symbol, which
4417 indicates to the C program that <dld.h> ("GNU" dynamic loading)
4418 exists and should be included.
4419 "i_dlfcn"
4421 From i_dlfcn.U:
4422 This variable conditionally defines the "I_DLFCN" symbol, which
4424 indicates to the C program that <dlfcn.h> exists and should be
4425 included.
4426 "i_fcntl"
4428 From i_fcntl.U:
4429 This variable controls the value of "I_FCNTL" (which tells the C
4431 program to include <fcntl.h>).
4432 "i_float"
4434 From i_float.U:
4435 This variable conditionally defines the "I_FLOAT" symbol, and
4437 indicates whether a C program may include <float.h> to get symbols
4438 like "DBL_MAX" or "DBL_MIN", i.e. machine dependent floating point
4439 values.
4440 "i_fp"
4442 From i_fp.U:
4443 This variable conditionally defines the "I_FP" symbol, and
4445 indicates whether a C program should include <fp.h>.
4446 "i_fp_class"
4448 From i_fp_class.U:
4449 This variable conditionally defines the "I_FP_CLASS" symbol, and
4451 indicates whether a C program should include <fp_class.h>.
4452 "i_gdbm"
4454 From i_gdbm.U:
4455 This variable conditionally defines the "I_GDBM" symbol, which
4457 indicates to the C program that <gdbm.h> exists and should be
4458 included.
4459 "i_gdbm_ndbm"
4461 From i_ndbm.U:
4462 This variable conditionally defines the "I_GDBM_NDBM" symbol, which
4464 indicates to the C program that <gdbm-ndbm.h> exists and should be
4465 included. This is the location of the ndbm.h compatibility file in
4466 Debian 4.0.
4467 "i_gdbmndbm"
4469 From i_ndbm.U:
4470 This variable conditionally defines the "I_GDBMNDBM" symbol, which
4472 indicates to the C program that <gdbm/ndbm.h> exists and should be
4473 included. This was the location of the ndbm.h compatibility file
4474 in RedHat 7.1.
4475 "i_grp"
4477 From i_grp.U:
4478 This variable conditionally defines the "I_GRP" symbol, and
4480 indicates whether a C program should include <grp.h>.
4481 "i_ieeefp"
4483 From i_ieeefp.U:
4484 This variable conditionally defines the "I_IEEEFP" symbol, and
4486 indicates whether a C program should include <ieeefp.h>.
4487 "i_inttypes"
4489 From i_inttypes.U:
4490 This variable conditionally defines the "I_INTTYPES" symbol, and
4492 indicates whether a C program should include <inttypes.h>.
4493 "i_langinfo"
4495 From i_langinfo.U:
4496 This variable conditionally defines the "I_LANGINFO" symbol, and
4498 indicates whether a C program should include <langinfo.h>.
4499 "i_libutil"
4501 From i_libutil.U:
4502 This variable conditionally defines the "I_LIBUTIL" symbol, and
4504 indicates whether a C program should include <libutil.h>.
4505 "i_limits"
4507 From i_limits.U:
4508 This variable conditionally defines the "I_LIMITS" symbol, and
4510 indicates whether a C program may include <limits.h> to get symbols
4511 like "WORD_BIT" and friends.
4512 "i_locale"
4514 From i_locale.U:
4515 This variable conditionally defines the "I_LOCALE" symbol, and
4517 indicates whether a C program should include <locale.h>.
4518 "i_machcthr"
4520 From i_machcthr.U:
4521 This variable conditionally defines the "I_MACH_CTHREADS" symbol,
4523 and indicates whether a C program should include <mach/cthreads.h>.
4524 "i_malloc"
4526 From i_malloc.U:
4527 This variable conditionally defines the "I_MALLOC" symbol, and
4529 indicates whether a C program should include <malloc.h>.
4530 "i_mallocmalloc"
4532 From i_mallocmalloc.U:
4533 This variable conditionally defines the "I_MALLOCMALLOC" symbol,
4535 and indicates whether a C program should include <malloc/malloc.h>.
4536 "i_math"
4538 From i_math.U:
4539 This variable conditionally defines the "I_MATH" symbol, and
4541 indicates whether a C program may include <math.h>.
4542 "i_memory"
4544 From i_memory.U:
4545 This variable conditionally defines the "I_MEMORY" symbol, and
4547 indicates whether a C program should include <memory.h>.
4548 "i_mntent"
4550 From i_mntent.U:
4551 This variable conditionally defines the "I_MNTENT" symbol, and
4553 indicates whether a C program should include <mntent.h>.
4554 "i_ndbm"
4556 From i_ndbm.U:
4557 This variable conditionally defines the "I_NDBM" symbol, which
4559 indicates to the C program that <ndbm.h> exists and should be
4560 included.
4561 "i_netdb"
4563 From i_netdb.U:
4564 This variable conditionally defines the "I_NETDB" symbol, and
4566 indicates whether a C program should include <netdb.h>.
4567 "i_neterrno"
4569 From i_neterrno.U:
4570 This variable conditionally defines the "I_NET_ERRNO" symbol, which
4572 indicates to the C program that <net/errno.h> exists and should be
4573 included.
4574 "i_netinettcp"
4576 From i_netinettcp.U:
4577 This variable conditionally defines the "I_NETINET_TCP" symbol, and
4579 indicates whether a C program should include <netinet/tcp.h>.
4580 "i_niin"
4582 From i_niin.U:
4583 This variable conditionally defines "I_NETINET_IN", which indicates
4585 to the C program that it should include <netinet/in.h>. Otherwise,
4586 you may try <sys/in.h>.
4587 "i_poll"
4589 From i_poll.U:
4590 This variable conditionally defines the "I_POLL" symbol, and
4592 indicates whether a C program should include <poll.h>.
4593 "i_prot"
4595 From i_prot.U:
4596 This variable conditionally defines the "I_PROT" symbol, and
4598 indicates whether a C program should include <prot.h>.
4599 "i_pthread"
4601 From i_pthread.U:
4602 This variable conditionally defines the "I_PTHREAD" symbol, and
4604 indicates whether a C program should include <pthread.h>.
4605 "i_pwd"
4607 From i_pwd.U:
4608 This variable conditionally defines "I_PWD", which indicates to the
4610 C program that it should include <pwd.h>.
4611 "i_rpcsvcdbm"
4613 From i_dbm.U:
4614 This variable conditionally defines the "I_RPCSVC_DBM" symbol,
4616 which indicates to the C program that <rpcsvc/dbm.h> exists and
4617 should be included. Some System V systems might need this instead
4618 of <dbm.h>.
4619 "i_sfio"
4621 From i_sfio.U:
4622 This variable conditionally defines the "I_SFIO" symbol, and
4624 indicates whether a C program should include <sfio.h>.
4625 "i_sgtty"
4627 From i_termio.U:
4628 This variable conditionally defines the "I_SGTTY" symbol, which
4630 indicates to the C program that it should include <sgtty.h> rather
4631 than <termio.h>.
4632 "i_shadow"
4634 From i_shadow.U:
4635 This variable conditionally defines the "I_SHADOW" symbol, and
4637 indicates whether a C program should include <shadow.h>.
4638 "i_socks"
4640 From i_socks.U:
4641 This variable conditionally defines the "I_SOCKS" symbol, and
4643 indicates whether a C program should include <socks.h>.
4644 "i_stdarg"
4646 From i_varhdr.U:
4647 This variable conditionally defines the "I_STDARG" symbol, which
4649 indicates to the C program that <stdarg.h> exists and should be
4650 included.
4651 "i_stdbool"
4653 From i_stdbool.U:
4654 This variable conditionally defines the "I_STDBOOL" symbol, which
4656 indicates to the C program that <stdbool.h> exists and should be
4657 included.
4658 "i_stddef"
4660 From i_stddef.U:
4661 This variable conditionally defines the "I_STDDEF" symbol, which
4663 indicates to the C program that <stddef.h> exists and should be
4664 included.
4665 "i_stdlib"
4667 From i_stdlib.U:
4668 This variable conditionally defines the "I_STDLIB" symbol, which
4670 indicates to the C program that <stdlib.h> exists and should be
4671 included.
4672 "i_string"
4674 From i_string.U:
4675 This variable conditionally defines the "I_STRING" symbol, which
4677 indicates that <string.h> should be included rather than
4678 <strings.h>.
4679 "i_sunmath"
4681 From i_sunmath.U:
4682 This variable conditionally defines the "I_SUNMATH" symbol, and
4684 indicates whether a C program should include <sunmath.h>.
4685 "i_sysaccess"
4687 From i_sysaccess.U:
4688 This variable conditionally defines the "I_SYS_ACCESS" symbol, and
4690 indicates whether a C program should include <sys/access.h>.
4691 "i_sysdir"
4693 From i_sysdir.U:
4694 This variable conditionally defines the "I_SYS_DIR" symbol, and
4696 indicates whether a C program should include <sys/dir.h>.
4697 "i_sysfile"
4699 From i_sysfile.U:
4700 This variable conditionally defines the "I_SYS_FILE" symbol, and
4702 indicates whether a C program should include <sys/file.h> to get
4703 "R_OK" and friends.
4704 "i_sysfilio"
4706 From i_sysioctl.U:
4707 This variable conditionally defines the "I_SYS_FILIO" symbol, which
4709 indicates to the C program that <sys/filio.h> exists and should be
4710 included in preference to <sys/ioctl.h>.
4711 "i_sysin"
4713 From i_niin.U:
4714 This variable conditionally defines "I_SYS_IN", which indicates to
4716 the C program that it should include <sys/in.h> instead of
4717 <netinet/in.h>.
4718 "i_sysioctl"
4720 From i_sysioctl.U:
4721 This variable conditionally defines the "I_SYS_IOCTL" symbol, which
4723 indicates to the C program that <sys/ioctl.h> exists and should be
4724 included.
4725 "i_syslog"
4727 From i_syslog.U:
4728 This variable conditionally defines the "I_SYSLOG" symbol, and
4730 indicates whether a C program should include <syslog.h>.
4731 "i_sysmman"
4733 From i_sysmman.U:
4734 This variable conditionally defines the "I_SYS_MMAN" symbol, and
4736 indicates whether a C program should include <sys/mman.h>.
4737 "i_sysmode"
4739 From i_sysmode.U:
4740 This variable conditionally defines the "I_SYSMODE" symbol, and
4742 indicates whether a C program should include <sys/mode.h>.
4743 "i_sysmount"
4745 From i_sysmount.U:
4746 This variable conditionally defines the "I_SYSMOUNT" symbol, and
4748 indicates whether a C program should include <sys/mount.h>.
4749 "i_sysndir"
4751 From i_sysndir.U:
4752 This variable conditionally defines the "I_SYS_NDIR" symbol, and
4754 indicates whether a C program should include <sys/ndir.h>.
4755 "i_sysparam"
4757 From i_sysparam.U:
4758 This variable conditionally defines the "I_SYS_PARAM" symbol, and
4760 indicates whether a C program should include <sys/param.h>.
4761 "i_syspoll"
4763 From i_syspoll.U:
4764 This variable conditionally defines the "I_SYS_POLL" symbol, which
4766 indicates to the C program that it should include <sys/poll.h>.
4767 "i_sysresrc"
4769 From i_sysresrc.U:
4770 This variable conditionally defines the "I_SYS_RESOURCE" symbol,
4772 and indicates whether a C program should include <sys/resource.h>.
4773 "i_syssecrt"
4775 From i_syssecrt.U:
4776 This variable conditionally defines the "I_SYS_SECURITY" symbol,
4778 and indicates whether a C program should include <sys/security.h>.
4779 "i_sysselct"
4781 From i_sysselct.U:
4782 This variable conditionally defines "I_SYS_SELECT", which indicates
4784 to the C program that it should include <sys/select.h> in order to
4785 get the definition of struct timeval.
4786 "i_syssockio"
4788 From i_sysioctl.U:
4789 This variable conditionally defines "I_SYS_SOCKIO" to indicate to
4791 the C program that socket ioctl codes may be found in
4792 <sys/sockio.h> instead of <sys/ioctl.h>.
4793 "i_sysstat"
4795 From i_sysstat.U:
4796 This variable conditionally defines the "I_SYS_STAT" symbol, and
4798 indicates whether a C program should include <sys/stat.h>.
4799 "i_sysstatfs"
4801 From i_sysstatfs.U:
4802 This variable conditionally defines the "I_SYSSTATFS" symbol, and
4804 indicates whether a C program should include <sys/statfs.h>.
4805 "i_sysstatvfs"
4807 From i_sysstatvfs.U:
4808 This variable conditionally defines the "I_SYSSTATVFS" symbol, and
4810 indicates whether a C program should include <sys/statvfs.h>.
4811 "i_systime"
4813 From i_time.U:
4814 This variable conditionally defines "I_SYS_TIME", which indicates
4816 to the C program that it should include <sys/time.h>.
4817 "i_systimek"
4819 From i_time.U:
4820 This variable conditionally defines "I_SYS_TIME_KERNEL", which
4822 indicates to the C program that it should include <sys/time.h> with
4823 "KERNEL" defined.
4824 "i_systimes"
4826 From i_systimes.U:
4827 This variable conditionally defines the "I_SYS_TIMES" symbol, and
4829 indicates whether a C program should include <sys/times.h>.
4830 "i_systypes"
4832 From i_systypes.U:
4833 This variable conditionally defines the "I_SYS_TYPES" symbol, and
4835 indicates whether a C program should include <sys/types.h>.
4836 "i_sysuio"
4838 From i_sysuio.U:
4839 This variable conditionally defines the "I_SYSUIO" symbol, and
4841 indicates whether a C program should include <sys/uio.h>.
4842 "i_sysun"
4844 From i_sysun.U:
4845 This variable conditionally defines "I_SYS_UN", which indicates to
4847 the C program that it should include <sys/un.h> to get "UNIX"
4848 domain socket definitions.
4849 "i_sysutsname"
4851 From i_sysutsname.U:
4852 This variable conditionally defines the "I_SYSUTSNAME" symbol, and
4854 indicates whether a C program should include <sys/utsname.h>.
4855 "i_sysvfs"
4857 From i_sysvfs.U:
4858 This variable conditionally defines the "I_SYSVFS" symbol, and
4860 indicates whether a C program should include <sys/vfs.h>.
4861 "i_syswait"
4863 From i_syswait.U:
4864 This variable conditionally defines "I_SYS_WAIT", which indicates
4866 to the C program that it should include <sys/wait.h>.
4867 "i_termio"
4869 From i_termio.U:
4870 This variable conditionally defines the "I_TERMIO" symbol, which
4872 indicates to the C program that it should include <termio.h> rather
4873 than <sgtty.h>.
4874 "i_termios"
4876 From i_termio.U:
4877 This variable conditionally defines the "I_TERMIOS" symbol, which
4879 indicates to the C program that the "POSIX" <termios.h> file is to
4880 be included.
4881 "i_time"
4883 From i_time.U:
4884 This variable conditionally defines "I_TIME", which indicates to
4886 the C program that it should include <time.h>.
4887 "i_unistd"
4889 From i_unistd.U:
4890 This variable conditionally defines the "I_UNISTD" symbol, and
4892 indicates whether a C program should include <unistd.h>.
4893 "i_ustat"
4895 From i_ustat.U:
4896 This variable conditionally defines the "I_USTAT" symbol, and
4898 indicates whether a C program should include <ustat.h>.
4899 "i_utime"
4901 From i_utime.U:
4902 This variable conditionally defines the "I_UTIME" symbol, and
4904 indicates whether a C program should include <utime.h>.
4905 "i_values"
4907 From i_values.U:
4908 This variable conditionally defines the "I_VALUES" symbol, and
4910 indicates whether a C program may include <values.h> to get symbols
4911 like "MAXLONG" and friends.
4912 "i_varargs"
4914 From i_varhdr.U:
4915 This variable conditionally defines "I_VARARGS", which indicates to
4917 the C program that it should include <varargs.h>.
4918 "i_varhdr"
4920 From i_varhdr.U:
4921 Contains the name of the header to be included to get va_dcl
4923 definition. Typically one of varargs.h or stdarg.h.
4924 "i_vfork"
4926 From i_vfork.U:
4927 This variable conditionally defines the "I_VFORK" symbol, and
4929 indicates whether a C program should include vfork.h.
4930 "ignore_versioned_solibs"
4932 From libs.U:
4933 This variable should be non-empty if non-versioned shared libraries
4935 (libfoo.so.x.y) are to be ignored (because they cannot be linked
4936 against).
4937 "inc_version_list"
4939 From inc_version_list.U:
4940 This variable specifies the list of subdirectories in over which
4942 perl.c:incpush() and lib/lib.pm will automatically search when
4943 adding directories to @"INC". The elements in the list are
4944 separated by spaces. This is only useful if you have a perl
4945 library directory tree structured like the default one. See
4946 "INSTALL" for how this works. The versioned site_perl directory
4947 was introduced in 5.005, so that is the lowest possible value.
4948 This list includes architecture-dependent directories back to
4950 version $api_versionstring (e.g. 5.5.640) and architecture-
4951 independent directories all the way back to 5.005.
4952 "inc_version_list_init"
4954 From inc_version_list.U:
4955 This variable holds the same list as inc_version_list, but each
4957 item is enclosed in double quotes and separated by commas, suitable
4958 for use in the "PERL_INC_VERSION_LIST" initialization.
4959 "incpath"
4961 From usrinc.U:
4962 This variable must precede the normal include path to get the right
4964 one, as in $incpath/usr/include or $incpath/usr/lib. Value can be
4965 "" or /bsd43 on mips.
4966 "inews"
4968 From Loc.U:
4969 This variable is defined but not used by Configure. The value is
4971 the empty string and is not useful.
4972 "initialinstalllocation"
4974 From bin.U:
4975 When userelocatableinc is true, this variable holds the location
4977 that make install should copy the perl binary to, with all the run-
4978 time relocatable paths calculated from this at install time. When
4979 used, it is initialised to the original value of binexp, and then
4980 binexp is set to .../, as the other binaries are found relative to
4981 the perl binary.
4982 "installarchlib"
4984 From archlib.U:
4985 This variable is really the same as archlibexp but may differ on
4987 those systems using "AFS". For extra portability, only this
4988 variable should be used in makefiles.
4989 "installbin"
4991 From bin.U:
4992 This variable is the same as binexp unless "AFS" is running in
4994 which case the user is explicitly prompted for it. This variable
4995 should always be used in your makefiles for maximum portability.
4996 "installhtml1dir"
4998 From html1dir.U:
4999 This variable is really the same as html1direxp, unless you are
5001 using a different installprefix. For extra portability, you should
5002 only use this variable within your makefiles.
5003 "installhtml3dir"
5005 From html3dir.U:
5006 This variable is really the same as html3direxp, unless you are
5008 using a different installprefix. For extra portability, you should
5009 only use this variable within your makefiles.
5010 "installman1dir"
5012 From man1dir.U:
5013 This variable is really the same as man1direxp, unless you are
5015 using "AFS" in which case it points to the read/write location
5016 whereas man1direxp only points to the read-only access location.
5017 For extra portability, you should only use this variable within
5018 your makefiles.
5019 "installman3dir"
5021 From man3dir.U:
5022 This variable is really the same as man3direxp, unless you are
5024 using "AFS" in which case it points to the read/write location
5025 whereas man3direxp only points to the read-only access location.
5026 For extra portability, you should only use this variable within
5027 your makefiles.
5028 "installprefix"
5030 From installprefix.U:
5031 This variable holds the name of the directory below which "make
5033 install" will install the package. For most users, this is the
5034 same as prefix. However, it is useful for installing the software
5035 into a different (usually temporary) location after which it can be
5036 bundled up and moved somehow to the final location specified by
5037 prefix.
5038 "installprefixexp"
5040 From installprefix.U:
5041 This variable holds the full absolute path of installprefix with
5043 all ~-expansion done.
5044 "installprivlib"
5046 From privlib.U:
5047 This variable is really the same as privlibexp but may differ on
5049 those systems using "AFS". For extra portability, only this
5050 variable should be used in makefiles.
5051 "installscript"
5053 From scriptdir.U:
5054 This variable is usually the same as scriptdirexp, unless you are
5056 on a system running "AFS", in which case they may differ slightly.
5057 You should always use this variable within your makefiles for
5058 portability.
5059 "installsitearch"
5061 From sitearch.U:
5062 This variable is really the same as sitearchexp but may differ on
5064 those systems using "AFS". For extra portability, only this
5065 variable should be used in makefiles.
5066 "installsitebin"
5068 From sitebin.U:
5069 This variable is usually the same as sitebinexp, unless you are on
5071 a system running "AFS", in which case they may differ slightly. You
5072 should always use this variable within your makefiles for
5073 portability.
5074 "installsitehtml1dir"
5076 From sitehtml1dir.U:
5077 This variable is really the same as sitehtml1direxp, unless you are
5079 using "AFS" in which case it points to the read/write location
5080 whereas html1direxp only points to the read-only access location.
5081 For extra portability, you should only use this variable within
5082 your makefiles.
5083 "installsitehtml3dir"
5085 From sitehtml3dir.U:
5086 This variable is really the same as sitehtml3direxp, unless you are
5088 using "AFS" in which case it points to the read/write location
5089 whereas html3direxp only points to the read-only access location.
5090 For extra portability, you should only use this variable within
5091 your makefiles.
5092 "installsitelib"
5094 From sitelib.U:
5095 This variable is really the same as sitelibexp but may differ on
5097 those systems using "AFS". For extra portability, only this
5098 variable should be used in makefiles.
5099 "installsiteman1dir"
5101 From siteman1dir.U:
5102 This variable is really the same as siteman1direxp, unless you are
5104 using "AFS" in which case it points to the read/write location
5105 whereas man1direxp only points to the read-only access location.
5106 For extra portability, you should only use this variable within
5107 your makefiles.
5108 "installsiteman3dir"
5110 From siteman3dir.U:
5111 This variable is really the same as siteman3direxp, unless you are
5113 using "AFS" in which case it points to the read/write location
5114 whereas man3direxp only points to the read-only access location.
5115 For extra portability, you should only use this variable within
5116 your makefiles.
5117 "installsitescript"
5119 From sitescript.U:
5120 This variable is usually the same as sitescriptexp, unless you are
5122 on a system running "AFS", in which case they may differ slightly.
5123 You should always use this variable within your makefiles for
5124 portability.
5125 "installstyle"
5127 From installstyle.U:
5128 This variable describes the "style" of the perl installation. This
5130 is intended to be useful for tools that need to manipulate entire
5131 perl distributions. Perl itself doesn't use this to find its
5132 libraries -- the library directories are stored directly in
5133 Config.pm. Currently, there are only two styles: "lib" and
5134 lib/perl5. The default library locations (e.g. privlib, sitelib)
5135 are either $prefix/lib or $prefix/lib/perl5. The former is useful
5136 if $prefix is a directory dedicated to perl (e.g. /opt/perl), while
5137 the latter is useful if $prefix is shared by many packages, e.g. if
5138 $prefix=/usr/local.
5139 Unfortunately, while this "style" variable is used to set defaults
5141 for all three directory hierarchies (core, vendor, and site), there
5142 is no guarantee that the same style is actually appropriate for all
5143 those directories. For example, $prefix might be /opt/perl, but
5144 $siteprefix might be /usr/local. (Perhaps, in retrospect, the
5145 "lib" style should never have been supported, but it did seem like
5146 a nice idea at the time.)
5147 The situation is even less clear for tools such as MakeMaker that
5149 can be used to install additional modules into non-standard places.
5150 For example, if a user intends to install a module into a private
5151 directory (perhaps by setting "PREFIX" on the Makefile.PL command
5152 line), then there is no reason to assume that the Configure-time
5153 $installstyle setting will be relevant for that "PREFIX".
5154 This may later be extended to include other information, so be
5156 careful with pattern-matching on the results.
5157 For compatibility with perl5.005 and earlier, the default setting
5159 is based on whether or not $prefix contains the string "perl".
5160 "installusrbinperl"
5162 From instubperl.U:
5163 This variable tells whether Perl should be installed also as
5165 /usr/bin/perl in addition to $installbin/perl
5166 "installvendorarch"
5168 From vendorarch.U:
5169 This variable is really the same as vendorarchexp but may differ on
5171 those systems using "AFS". For extra portability, only this
5172 variable should be used in makefiles.
5173 "installvendorbin"
5175 From vendorbin.U:
5176 This variable is really the same as vendorbinexp but may differ on
5178 those systems using "AFS". For extra portability, only this
5179 variable should be used in makefiles.
5180 "installvendorhtml1dir"
5182 From vendorhtml1dir.U:
5183 This variable is really the same as vendorhtml1direxp but may
5185 differ on those systems using "AFS". For extra portability, only
5186 this variable should be used in makefiles.
5187 "installvendorhtml3dir"
5189 From vendorhtml3dir.U:
5190 This variable is really the same as vendorhtml3direxp but may
5192 differ on those systems using "AFS". For extra portability, only
5193 this variable should be used in makefiles.
5194 "installvendorlib"
5196 From vendorlib.U:
5197 This variable is really the same as vendorlibexp but may differ on
5199 those systems using "AFS". For extra portability, only this
5200 variable should be used in makefiles.
5201 "installvendorman1dir"
5203 From vendorman1dir.U:
5204 This variable is really the same as vendorman1direxp but may differ
5206 on those systems using "AFS". For extra portability, only this
5207 variable should be used in makefiles.
5208 "installvendorman3dir"
5210 From vendorman3dir.U:
5211 This variable is really the same as vendorman3direxp but may differ
5213 on those systems using "AFS". For extra portability, only this
5214 variable should be used in makefiles.
5215 "installvendorscript"
5217 From vendorscript.U:
5218 This variable is really the same as vendorscriptexp but may differ
5220 on those systems using "AFS". For extra portability, only this
5221 variable should be used in makefiles.
5222 "intsize"
5224 From intsize.U:
5225 This variable contains the value of the "INTSIZE" symbol, which
5227 indicates to the C program how many bytes there are in an int.
5228 "issymlink"
5230 From issymlink.U:
5231 This variable holds the test command to test for a symbolic link
5233 (if they are supported). Typical values include "test -h" and
5234 "test -L".
5235 "ivdformat"
5237 From perlxvf.U:
5238 This variable contains the format string used for printing a Perl
5240 "IV" as a signed decimal integer.
5241 "ivsize"
5243 From perlxv.U:
5244 This variable is the size of an "IV" in bytes.
5246 "ivtype"
5248 From perlxv.U:
5249 This variable contains the C type used for Perl's "IV".
5251 k
5253 "known_extensions"
5254 From Extensions.U:
5255 This variable holds a list of all "XS" extensions included in the
5257 package.
5258 "ksh"
5260 From Loc.U:
5261 This variable is defined but not used by Configure. The value is
5263 the empty string and is not useful.
5264 l
5266 "ld"
5267 From dlsrc.U:
5268 This variable indicates the program to be used to link libraries
5270 for dynamic loading. On some systems, it is "ld". On "ELF"
5271 systems, it should be $cc. Mostly, we'll try to respect the hint
5272 file setting.
5273 "ld_can_script"
5275 From dlsrc.U:
5276 This variable shows if the loader accepts scripts in the form of
5278 -Wl,--version-script=ld.script. This is currently only supported
5279 for "GNU" ld on "ELF" in dynamic loading builds.
5280 "lddlflags"
5282 From dlsrc.U:
5283 This variable contains any special flags that might need to be
5285 passed to $ld to create a shared library suitable for dynamic
5286 loading. It is up to the makefile to use it. For hpux, it should
5287 be "-b". For sunos 4.1, it is empty.
5288 "ldflags"
5290 From ccflags.U:
5291 This variable contains any additional C loader flags desired by the
5293 user. It is up to the Makefile to use this.
5294 "ldflags_uselargefiles"
5296 From uselfs.U:
5297 This variable contains the loader flags needed by large file builds
5299 and added to ldflags by hints files.
5300 "ldlibpthname"
5302 From libperl.U:
5303 This variable holds the name of the shared library search path,
5305 often "LD_LIBRARY_PATH". To get an empty string, the hints file
5306 must set this to "none".
5307 "less"
5309 From Loc.U:
5310 This variable is used internally by Configure to determine the full
5312 pathname (if any) of the less program. After Configure runs, the
5313 value is reset to a plain "less" and is not useful.
5314 "lib_ext"
5316 From Unix.U:
5317 This is an old synonym for _a.
5319 "libc"
5321 From libc.U:
5322 This variable contains the location of the C library.
5324 "libperl"
5326 From libperl.U:
5327 The perl executable is obtained by linking perlmain.c with libperl,
5329 any static extensions (usually just DynaLoader), and any other
5330 libraries needed on this system. libperl is usually libperl.a, but
5331 can also be libperl.so.xxx if the user wishes to build a perl
5332 executable with a shared library.
5333 "libpth"
5335 From libpth.U:
5336 This variable holds the general path (space-separated) used to find
5338 libraries. It is intended to be used by other units.
5339 "libs"
5341 From libs.U:
5342 This variable holds the additional libraries we want to use. It is
5344 up to the Makefile to deal with it. The list can be empty.
5345 "libsdirs"
5347 From libs.U:
5348 This variable holds the directory names aka dirnames of the
5350 libraries we found and accepted, duplicates are removed.
5351 "libsfiles"
5353 From libs.U:
5354 This variable holds the filenames aka basenames of the libraries we
5356 found and accepted.
5357 "libsfound"
5359 From libs.U:
5360 This variable holds the full pathnames of the libraries we found
5362 and accepted.
5363 "libspath"
5365 From libs.U:
5366 This variable holds the directory names probed for libraries.
5368 "libswanted"
5370 From Myinit.U:
5371 This variable holds a list of all the libraries we want to search.
5373 The order is chosen to pick up the c library ahead of ucb or bsd
5374 libraries for SVR4.
5375 "libswanted_uselargefiles"
5377 From uselfs.U:
5378 This variable contains the libraries needed by large file builds
5380 and added to ldflags by hints files. It is a space separated list
5381 of the library names without the "lib" prefix or any suffix, just
5382 like libswanted..
5383 "line"
5385 From Loc.U:
5386 This variable is defined but not used by Configure. The value is
5388 the empty string and is not useful.
5389 "lint"
5391 From Loc.U:
5392 This variable is defined but not used by Configure. The value is
5394 the empty string and is not useful.
5395 "lkflags"
5397 From ccflags.U:
5398 This variable contains any additional C partial linker flags
5400 desired by the user. It is up to the Makefile to use this.
5401 "ln"
5403 From Loc.U:
5404 This variable is used internally by Configure to determine the full
5406 pathname (if any) of the ln program. After Configure runs, the
5407 value is reset to a plain "ln" and is not useful.
5408 "lns"
5410 From lns.U:
5411 This variable holds the name of the command to make symbolic links
5413 (if they are supported). It can be used in the Makefile. It is
5414 either "ln -s" or "ln"
5415 "localtime_r_proto"
5417 From d_localtime_r.U:
5418 This variable encodes the prototype of localtime_r. It is zero if
5420 d_localtime_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
5421 macros of reentr.h if d_localtime_r is defined.
5422 "locincpth"
5424 From ccflags.U:
5425 This variable contains a list of additional directories to be
5427 searched by the compiler. The appropriate "-I" directives will be
5428 added to ccflags. This is intended to simplify setting local
5429 directories from the Configure command line. It's not much, but it
5430 parallels the loclibpth stuff in libpth.U.
5431 "loclibpth"
5433 From libpth.U:
5434 This variable holds the paths (space-separated) used to find local
5436 libraries. It is prepended to libpth, and is intended to be easily
5437 set from the command line.
5438 "longdblsize"
5440 From d_longdbl.U:
5441 This variable contains the value of the "LONG_DOUBLESIZE" symbol,
5443 which indicates to the C program how many bytes there are in a long
5444 double, if this system supports long doubles.
5445 "longlongsize"
5447 From d_longlong.U:
5448 This variable contains the value of the "LONGLONGSIZE" symbol,
5450 which indicates to the C program how many bytes there are in a long
5451 long, if this system supports long long.
5452 "longsize"
5454 From intsize.U:
5455 This variable contains the value of the "LONGSIZE" symbol, which
5457 indicates to the C program how many bytes there are in a long.
5458 "lp"
5460 From Loc.U:
5461 This variable is defined but not used by Configure. The value is
5463 the empty string and is not useful.
5464 "lpr"
5466 From Loc.U:
5467 This variable is defined but not used by Configure. The value is
5469 the empty string and is not useful.
5470 "ls"
5472 From Loc.U:
5473 This variable is used internally by Configure to determine the full
5475 pathname (if any) of the ls program. After Configure runs, the
5476 value is reset to a plain "ls" and is not useful.
5477 "lseeksize"
5479 From lseektype.U:
5480 This variable defines lseektype to be something like off_t, long,
5482 or whatever type is used to declare lseek offset's type in the
5483 kernel (which also appears to be lseek's return type).
5484 "lseektype"
5486 From lseektype.U:
5487 This variable defines lseektype to be something like off_t, long,
5489 or whatever type is used to declare lseek offset's type in the
5490 kernel (which also appears to be lseek's return type).
5491 m
5493 "mad"
5494 From mad.U:
5495 This variable indicates that the Misc Attribute Definition code is
5497 to be compiled.
5498 "madlyh"
5500 From mad.U:
5501 If the Misc Attribute Decoration is to be compiled, this variable
5503 is set to the name of the extra header files to be used, else it is
5504 ''
5505 "madlyobj"
5507 From mad.U:
5508 If the Misc Attribute Decoration is to be compiled, this variable
5510 is set to the name of the extra object files to be used, else it is
5511 ''
5512 "madlysrc"
5514 From mad.U:
5515 If the Misc Attribute Decoration is to be compiled, this variable
5517 is set to the name of the extra C source files to be used, else it
5518 is ''
5519 "mail"
5521 From Loc.U:
5522 This variable is defined but not used by Configure. The value is
5524 the empty string and is not useful.
5525 "mailx"
5527 From Loc.U:
5528 This variable is defined but not used by Configure. The value is
5530 the empty string and is not useful.
5531 "make"
5533 From Loc.U:
5534 This variable is used internally by Configure to determine the full
5536 pathname (if any) of the make program. After Configure runs, the
5537 value is reset to a plain "make" and is not useful.
5538 "make_set_make"
5540 From make.U:
5541 Some versions of "make" set the variable "MAKE". Others do not.
5543 This variable contains the string to be included in Makefile.SH so
5544 that "MAKE" is set if needed, and not if not needed. Possible
5545 values are:
5546 make_set_make="#" # If your make program handles this for
5548 you,
5549 make_set_make="MAKE=$make" # if it doesn't.
5551 This uses a comment character so that we can distinguish a "set"
5553 value (from a previous config.sh or Configure "-D" option) from an
5554 uncomputed value.
5555 "mallocobj"
5557 From mallocsrc.U:
5558 This variable contains the name of the malloc.o that this package
5560 generates, if that malloc.o is preferred over the system malloc.
5561 Otherwise the value is null. This variable is intended for
5562 generating Makefiles. See mallocsrc.
5563 "mallocsrc"
5565 From mallocsrc.U:
5566 This variable contains the name of the malloc.c that comes with the
5568 package, if that malloc.c is preferred over the system malloc.
5569 Otherwise the value is null. This variable is intended for
5570 generating Makefiles.
5571 "malloctype"
5573 From mallocsrc.U:
5574 This variable contains the kind of ptr returned by malloc and
5576 realloc.
5577 "man1dir"
5579 From man1dir.U:
5580 This variable contains the name of the directory in which manual
5582 source pages are to be put. It is the responsibility of the
5583 Makefile.SH to get the value of this into the proper command. You
5584 must be prepared to do the ~name expansion yourself.
5585 "man1direxp"
5587 From man1dir.U:
5588 This variable is the same as the man1dir variable, but is filename
5590 expanded at configuration time, for convenient use in makefiles.
5591 "man1ext"
5593 From man1dir.U:
5594 This variable contains the extension that the manual page should
5596 have: one of "n", "l", or 1. The Makefile must supply the .. See
5597 man1dir.
5598 "man3dir"
5600 From man3dir.U:
5601 This variable contains the name of the directory in which manual
5603 source pages are to be put. It is the responsibility of the
5604 Makefile.SH to get the value of this into the proper command. You
5605 must be prepared to do the ~name expansion yourself.
5606 "man3direxp"
5608 From man3dir.U:
5609 This variable is the same as the man3dir variable, but is filename
5611 expanded at configuration time, for convenient use in makefiles.
5612 "man3ext"
5614 From man3dir.U:
5615 This variable contains the extension that the manual page should
5617 have: one of "n", "l", or 3. The Makefile must supply the .. See
5618 man3dir.
5619 "mips_type"
5621 From usrinc.U:
5622 This variable holds the environment type for the mips system.
5624 Possible values are "BSD 4.3" and "System V".
5625 "mistrustnm"
5627 From Csym.U:
5628 This variable can be used to establish a fallthrough for the cases
5630 where nm fails to find a symbol. If usenm is false or usenm is
5631 true and mistrustnm is false, this variable has no effect. If
5632 usenm is true and mistrustnm is "compile", a test program will be
5633 compiled to try to find any symbol that can't be located via nm
5634 lookup. If mistrustnm is "run", the test program will be run as
5635 well as being compiled.
5636 "mkdir"
5638 From Loc.U:
5639 This variable is used internally by Configure to determine the full
5641 pathname (if any) of the mkdir program. After Configure runs, the
5642 value is reset to a plain "mkdir" and is not useful.
5643 "mmaptype"
5645 From d_mmap.U:
5646 This symbol contains the type of pointer returned by mmap() (and
5648 simultaneously the type of the first argument). It can be "void *"
5649 or "caddr_t".
5650 "modetype"
5652 From modetype.U:
5653 This variable defines modetype to be something like mode_t, int,
5655 unsigned short, or whatever type is used to declare file modes for
5656 system calls.
5657 "more"
5659 From Loc.U:
5660 This variable is used internally by Configure to determine the full
5662 pathname (if any) of the more program. After Configure runs, the
5663 value is reset to a plain "more" and is not useful.
5664 "multiarch"
5666 From multiarch.U:
5667 This variable conditionally defines the "MULTIARCH" symbol which
5669 signifies the presence of multiplatform files. This is normally
5670 set by hints files.
5671 "mv"
5673 From Loc.U:
5674 This variable is defined but not used by Configure. The value is
5676 the empty string and is not useful.
5677 "myarchname"
5679 From archname.U:
5680 This variable holds the architecture name computed by Configure in
5682 a previous run. It is not intended to be perused by any user and
5683 should never be set in a hint file.
5684 "mydomain"
5686 From myhostname.U:
5687 This variable contains the eventual value of the "MYDOMAIN" symbol,
5689 which is the domain of the host the program is going to run on.
5690 The domain must be appended to myhostname to form a complete host
5691 name. The dot comes with mydomain, and need not be supplied by the
5692 program.
5693 "myhostname"
5695 From myhostname.U:
5696 This variable contains the eventual value of the "MYHOSTNAME"
5698 symbol, which is the name of the host the program is going to run
5699 on. The domain is not kept with hostname, but must be gotten from
5700 mydomain. The dot comes with mydomain, and need not be supplied by
5701 the program.
5702 "myuname"
5704 From Oldconfig.U:
5705 The output of "uname -a" if available, otherwise the hostname. On
5707 Xenix, pseudo variables assignments in the output are stripped,
5708 thank you. The whole thing is then lower-cased.
5709 n
5711 "n" From n.U:
5712 This variable contains the "-n" flag if that is what causes the
5714 echo command to suppress newline. Otherwise it is null. Correct
5715 usage is $echo $n "prompt for a question: $c".
5716 "need_va_copy"
5718 From need_va_copy.U:
5719 This symbol, if defined, indicates that the system stores the
5721 variable argument list datatype, va_list, in a format that cannot
5722 be copied by simple assignment, so that some other means must be
5723 used when copying is required. As such systems vary in their
5724 provision (or non-provision) of copying mechanisms, handy.h defines
5725 a platform- "independent" macro, Perl_va_copy(src, dst), to do the
5726 job.
5727 "netdb_hlen_type"
5729 From netdbtype.U:
5730 This variable holds the type used for the 2nd argument to
5732 gethostbyaddr(). Usually, this is int or size_t or unsigned. This
5733 is only useful if you have gethostbyaddr(), naturally.
5734 "netdb_host_type"
5736 From netdbtype.U:
5737 This variable holds the type used for the 1st argument to
5739 gethostbyaddr(). Usually, this is char * or void *, possibly with
5740 or without a const prefix. This is only useful if you have
5741 gethostbyaddr(), naturally.
5742 "netdb_name_type"
5744 From netdbtype.U:
5745 This variable holds the type used for the argument to
5747 gethostbyname(). Usually, this is char * or const char *. This is
5748 only useful if you have gethostbyname(), naturally.
5749 "netdb_net_type"
5751 From netdbtype.U:
5752 This variable holds the type used for the 1st argument to
5754 getnetbyaddr(). Usually, this is int or long. This is only useful
5755 if you have getnetbyaddr(), naturally.
5756 "nm"
5758 From Loc.U:
5759 This variable is used internally by Configure to determine the full
5761 pathname (if any) of the nm program. After Configure runs, the
5762 value is reset to a plain "nm" and is not useful.
5763 "nm_opt"
5765 From usenm.U:
5766 This variable holds the options that may be necessary for nm.
5768 "nm_so_opt"
5770 From usenm.U:
5771 This variable holds the options that may be necessary for nm to
5773 work on a shared library but that can not be used on an archive
5774 library. Currently, this is only used by Linux, where nm --dynamic
5775 is *required* to get symbols from an "ELF" library which has been
5776 stripped, but nm --dynamic is *fatal* on an archive library. Maybe
5777 Linux should just always set usenm=false.
5778 "nonxs_ext"
5780 From Extensions.U:
5781 This variable holds a list of all non-xs extensions included in the
5783 package. All of them will be built.
5784 "nroff"
5786 From Loc.U:
5787 This variable is used internally by Configure to determine the full
5789 pathname (if any) of the nroff program. After Configure runs, the
5790 value is reset to a plain "nroff" and is not useful.
5791 "nv_overflows_integers_at"
5793 From perlxv.U:
5794 This variable gives the largest integer value that NVs can hold as
5796 a constant floating point expression. If it could not be
5797 determined, it holds the value 0.
5798 "nv_preserves_uv_bits"
5800 From perlxv.U:
5801 This variable indicates how many of bits type uvtype a variable
5803 nvtype can preserve.
5804 "nveformat"
5806 From perlxvf.U:
5807 This variable contains the format string used for printing a Perl
5809 "NV" using %e-ish floating point format.
5810 "nvEUformat"
5812 From perlxvf.U:
5813 This variable contains the format string used for printing a Perl
5815 "NV" using %E-ish floating point format.
5816 "nvfformat"
5818 From perlxvf.U:
5819 This variable confains the format string used for printing a Perl
5821 "NV" using %f-ish floating point format.
5822 "nvFUformat"
5824 From perlxvf.U:
5825 This variable confains the format string used for printing a Perl
5827 "NV" using %F-ish floating point format.
5828 "nvgformat"
5830 From perlxvf.U:
5831 This variable contains the format string used for printing a Perl
5833 "NV" using %g-ish floating point format.
5834 "nvGUformat"
5836 From perlxvf.U:
5837 This variable contains the format string used for printing a Perl
5839 "NV" using %G-ish floating point format.
5840 "nvsize"
5842 From perlxv.U:
5843 This variable is the size of an "NV" in bytes.
5845 "nvtype"
5847 From perlxv.U:
5848 This variable contains the C type used for Perl's "NV".
5850 o
5852 "o_nonblock"
5853 From nblock_io.U:
5854 This variable bears the symbol value to be used during open() or
5856 fcntl() to turn on non-blocking I/O for a file descriptor. If you
5857 wish to switch between blocking and non-blocking, you may try
5858 ioctl("FIOSNBIO") instead, but that is only supported by some
5859 devices.
5860 "obj_ext"
5862 From Unix.U:
5863 This is an old synonym for _o.
5865 "old_pthread_create_joinable"
5867 From d_pthrattrj.U:
5868 This variable defines the constant to use for creating joinable
5870 (aka undetached) pthreads. Unused if pthread.h defines
5871 "PTHREAD_CREATE_JOINABLE". If used, possible values are
5872 "PTHREAD_CREATE_UNDETACHED" and "__UNDETACHED".
5873 "optimize"
5875 From ccflags.U:
5876 This variable contains any optimizer/debugger flag that should be
5878 used. It is up to the Makefile to use it.
5879 "orderlib"
5881 From orderlib.U:
5882 This variable is "true" if the components of libraries must be
5884 ordered (with `lorder $* | tsort`) before placing them in an
5885 archive. Set to "false" if ranlib or ar can generate random
5886 libraries.
5887 "osname"
5889 From Oldconfig.U:
5890 This variable contains the operating system name (e.g. sunos,
5892 solaris, hpux, etc.). It can be useful later on for setting
5893 defaults. Any spaces are replaced with underscores. It is set to
5894 a null string if we can't figure it out.
5895 "osvers"
5897 From Oldconfig.U:
5898 This variable contains the operating system version (e.g. 4.1.3,
5900 5.2, etc.). It is primarily used for helping select an appropriate
5901 hints file, but might be useful elsewhere for setting defaults. It
5902 is set to '' if we can't figure it out. We try to be flexible
5903 about how much of the version number to keep, e.g. if 4.1.1, 4.1.2,
5904 and 4.1.3 are essentially the same for this package, hints files
5905 might just be os_4.0 or os_4.1, etc., not keeping separate files
5906 for each little release.
5907 "otherlibdirs"
5909 From otherlibdirs.U:
5910 This variable contains a colon-separated set of paths for the perl
5912 binary to search for additional library files or modules. These
5913 directories will be tacked to the end of @"INC". Perl will
5914 automatically search below each path for version- and architecture-
5915 specific directories. See inc_version_list for more details. A
5916 value of " " means "none" and is used to preserve this value for
5917 the next run through Configure.
5918 p
5920 "package"
5921 From package.U:
5922 This variable contains the name of the package being constructed.
5924 It is primarily intended for the use of later Configure units.
5925 "pager"
5927 From pager.U:
5928 This variable contains the name of the preferred pager on the
5930 system. Usual values are (the full pathnames of) more, less, pg,
5931 or cat.
5932 "passcat"
5934 From nis.U:
5935 This variable contains a command that produces the text of the
5937 /etc/passwd file. This is normally "cat /etc/passwd", but can be
5938 "ypcat passwd" when "NIS" is used. On some systems, such as os390,
5939 there may be no equivalent command, in which case this variable is
5940 unset.
5941 "patchlevel"
5943 From patchlevel.U:
5944 The patchlevel level of this package. The value of patchlevel
5946 comes from the patchlevel.h file. In a version number such as
5947 5.6.1, this is the 6. In patchlevel.h, this is referred to as
5948 "PERL_VERSION".
5949 "path_sep"
5951 From Unix.U:
5952 This is an old synonym for p_ in Head.U, the character used to
5954 separate elements in the command shell search "PATH".
5955 "perl"
5957 From Loc.U:
5958 This variable is used internally by Configure to determine the full
5960 pathname (if any) of the perl program. After Configure runs, the
5961 value is reset to a plain "perl" and is not useful.
5962 "perl5"
5964 From perl5.U:
5965 This variable contains the full path (if any) to a previously
5967 installed perl5.005 or later suitable for running the script to
5968 determine inc_version_list.
5969 P
5971 "PERL_API_REVISION"
5972 From patchlevel.h:
5973 This number describes the earliest compatible "PERL_REVISION" of
5975 Perl ("compatibility" here being defined as sufficient binary/"API"
5976 compatibility to run "XS" code built with the older version).
5977 Normally this does not change across maintenance releases. Please
5978 read the comment in patchlevel.h.
5979 "PERL_API_SUBVERSION"
5981 From patchlevel.h:
5982 This number describes the earliest compatible "PERL_SUBVERSION" of
5984 Perl ("compatibility" here being defined as sufficient binary/"API"
5985 compatibility to run "XS" code built with the older version).
5986 Normally this does not change across maintenance releases. Please
5987 read the comment in patchlevel.h.
5988 "PERL_API_VERSION"
5990 From patchlevel.h:
5991 This number describes the earliest compatible "PERL_VERSION" of
5993 Perl ("compatibility" here being defined as sufficient binary/"API"
5994 compatibility to run "XS" code built with the older version).
5995 Normally this does not change across maintenance releases. Please
5996 read the comment in patchlevel.h.
5997 "PERL_CONFIG_SH"
5999 From Oldsyms.U:
6000 This is set to "true" in config.sh so that a shell script sourcing
6002 config.sh can tell if it has been sourced already.
6003 "PERL_PATCHLEVEL"
6005 From Oldsyms.U:
6006 This symbol reflects the patchlevel, if available. Will usually
6008 come from the .patch file, which is available when the perl source
6009 tree was fetched with rsync.
6010 "perl_patchlevel"
6012 From patchlevel.U:
6013 This is the Perl patch level, a numeric change identifier, as
6015 defined by whichever source code maintenance system is used to
6016 maintain the patches; currently Perforce. It does not correlate
6017 with the Perl version numbers or the maintenance versus development
6018 dichotomy except by also being increasing.
6019 "PERL_REVISION"
6021 From Oldsyms.U:
6022 In a Perl version number such as 5.6.2, this is the 5. This value
6024 is manually set in patchlevel.h
6025 "perl_static_inline"
6027 From d_static_inline.U:
6028 This variable defines the "PERL_STATIC_INLINE" symbol to the best-
6030 guess incantation to use for static inline functions.
6031 Possibilities include static inline (c99) static __inline__
6032 (gcc -ansi) static __inline ("MSVC") static _inline (older
6033 "MSVC") static (c89 compilers)
6034 "PERL_SUBVERSION"
6036 From Oldsyms.U:
6037 In a Perl version number such as 5.6.2, this is the 2. Values
6039 greater than 50 represent potentially unstable development
6040 subversions. This value is manually set in patchlevel.h
6041 "PERL_VERSION"
6043 From Oldsyms.U:
6044 In a Perl version number such as 5.6.2, this is the 6. This value
6046 is manually set in patchlevel.h
6047 "perladmin"
6049 From perladmin.U:
6050 Electronic mail address of the perl5 administrator.
6052 "perllibs"
6054 From End.U:
6055 The list of libraries needed by Perl only (any libraries needed by
6057 extensions only will by dropped, if using dynamic loading).
6058 "perlpath"
6060 From perlpath.U:
6061 This variable contains the eventual value of the "PERLPATH" symbol,
6063 which contains the name of the perl interpreter to be used in shell
6064 scripts and in the "eval "exec"" idiom. This variable is not
6065 necessarily the pathname of the file containing the perl
6066 interpreter; you must append the executable extension (_exe) if it
6067 is not already present. Note that Perl code that runs during the
6068 Perl build process cannot reference this variable, as Perl may not
6069 have been installed, or even if installed, may be a different
6070 version of Perl.
6071 "pg"
6073 From Loc.U:
6074 This variable is used internally by Configure to determine the full
6076 pathname (if any) of the pg program. After Configure runs, the
6077 value is reset to a plain "pg" and is not useful.
6078 "phostname"
6080 From myhostname.U:
6081 This variable contains the eventual value of the "PHOSTNAME"
6083 symbol, which is a command that can be fed to popen() to get the
6084 host name. The program should probably not presume that the domain
6085 is or isn't there already.
6086 "pidtype"
6088 From pidtype.U:
6089 This variable defines "PIDTYPE" to be something like pid_t, int,
6091 ushort, or whatever type is used to declare process ids in the
6092 kernel.
6093 "plibpth"
6095 From libpth.U:
6096 Holds the private path used by Configure to find out the libraries.
6098 Its value is prepend to libpth. This variable takes care of special
6099 machines, like the mips. Usually, it should be empty.
6100 "pmake"
6102 From Loc.U:
6103 This variable is defined but not used by Configure. The value is
6105 the empty string and is not useful.
6106 "pr"
6108 From Loc.U:
6109 This variable is defined but not used by Configure. The value is
6111 the empty string and is not useful.
6112 "prefix"
6114 From prefix.U:
6115 This variable holds the name of the directory below which the user
6117 will install the package. Usually, this is /usr/local, and
6118 executables go in /usr/local/bin, library stuff in /usr/local/lib,
6119 man pages in /usr/local/man, etc. It is only used to set defaults
6120 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
6121 "prefixexp"
6123 From prefix.U:
6124 This variable holds the full absolute path of the directory below
6126 which the user will install the package. Derived from prefix.
6127 "privlib"
6129 From privlib.U:
6130 This variable contains the eventual value of the "PRIVLIB" symbol,
6132 which is the name of the private library for this package. It may
6133 have a ~ on the front. It is up to the makefile to eventually
6134 create this directory while performing installation (with ~
6135 substitution).
6136 "privlibexp"
6138 From privlib.U:
6139 This variable is the ~name expanded version of privlib, so that you
6141 may use it directly in Makefiles or shell scripts.
6142 "procselfexe"
6144 From d_procselfexe.U:
6145 If d_procselfexe is defined, $procselfexe is the filename of the
6147 symbolic link pointing to the absolute pathname of the executing
6148 program.
6149 "prototype"
6151 From prototype.U:
6152 This variable holds the eventual value of "CAN_PROTOTYPE", which
6154 indicates the C compiler can handle funciton prototypes.
6155 "ptrsize"
6157 From ptrsize.U:
6158 This variable contains the value of the "PTRSIZE" symbol, which
6160 indicates to the C program how many bytes there are in a pointer.
6161 q
6163 "quadkind"
6164 From quadtype.U:
6165 This variable, if defined, encodes the type of a quad: 1 = int, 2 =
6167 long, 3 = long long, 4 = int64_t.
6168 "quadtype"
6170 From quadtype.U:
6171 This variable defines Quad_t to be something like long, int, long
6173 long, int64_t, or whatever type is used for 64-bit integers.
6174 r
6176 "randbits"
6177 From randfunc.U:
6178 Indicates how many bits are produced by the function used to
6180 generate normalized random numbers.
6181 "randfunc"
6183 From randfunc.U:
6184 Indicates the name of the random number function to use. Values
6186 include drand48, random, and rand. In C programs, the "Drand01"
6187 macro is defined to generate uniformly distributed random numbers
6188 over the range [0., 1.[ (see drand01 and nrand).
6189 "random_r_proto"
6191 From d_random_r.U:
6192 This variable encodes the prototype of random_r. It is zero if
6194 d_random_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6195 of reentr.h if d_random_r is defined.
6196 "randseedtype"
6198 From randfunc.U:
6199 Indicates the type of the argument of the seedfunc.
6201 "ranlib"
6203 From orderlib.U:
6204 This variable is set to the pathname of the ranlib program, if it
6206 is needed to generate random libraries. Set to ":" if ar can
6207 generate random libraries or if random libraries are not supported
6208 "rd_nodata"
6210 From nblock_io.U:
6211 This variable holds the return code from read() when no data is
6213 present. It should be -1, but some systems return 0 when "O_NDELAY"
6214 is used, which is a shame because you cannot make the difference
6215 between no data and an EOF.. Sigh!
6216 "readdir64_r_proto"
6218 From d_readdir64_r.U:
6219 This variable encodes the prototype of readdir64_r. It is zero if
6221 d_readdir64_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6222 macros of reentr.h if d_readdir64_r is defined.
6223 "readdir_r_proto"
6225 From d_readdir_r.U:
6226 This variable encodes the prototype of readdir_r. It is zero if
6228 d_readdir_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6229 of reentr.h if d_readdir_r is defined.
6230 "revision"
6232 From patchlevel.U:
6233 The value of revision comes from the patchlevel.h file. In a
6235 version number such as 5.6.1, this is the 5. In patchlevel.h, this
6236 is referred to as "PERL_REVISION".
6237 "rm"
6239 From Loc.U:
6240 This variable is used internally by Configure to determine the full
6242 pathname (if any) of the rm program. After Configure runs, the
6243 value is reset to a plain "rm" and is not useful.
6244 "rm_try"
6246 From Unix.U:
6247 This is a cleanup variable for try test programs. Internal
6249 Configure use only.
6250 "rmail"
6252 From Loc.U:
6253 This variable is defined but not used by Configure. The value is
6255 the empty string and is not useful.
6256 "run"
6258 From Cross.U:
6259 This variable contains the command used by Configure to copy and
6261 execute a cross-compiled executable in the target host. Useful and
6262 available only during Perl build. Empty string '' if not cross-
6263 compiling.
6264 "runnm"
6266 From usenm.U:
6267 This variable contains "true" or "false" depending whether the nm
6269 extraction should be performed or not, according to the value of
6270 usenm and the flags on the Configure command line.
6271 s
6273 "sched_yield"
6274 From d_pthread_y.U:
6275 This variable defines the way to yield the execution of the current
6277 thread.
6278 "scriptdir"
6280 From scriptdir.U:
6281 This variable holds the name of the directory in which the user
6283 wants to put publicly scripts for the package in question. It is
6284 either the same directory as for binaries, or a special one that
6285 can be mounted across different architectures, like /usr/share.
6286 Programs must be prepared to deal with ~name expansion.
6287 "scriptdirexp"
6289 From scriptdir.U:
6290 This variable is the same as scriptdir, but is filename expanded at
6292 configuration time, for programs not wanting to bother with it.
6293 "sed"
6295 From Loc.U:
6296 This variable is used internally by Configure to determine the full
6298 pathname (if any) of the sed program. After Configure runs, the
6299 value is reset to a plain "sed" and is not useful.
6300 "seedfunc"
6302 From randfunc.U:
6303 Indicates the random number generating seed function. Values
6305 include srand48, srandom, and srand.
6306 "selectminbits"
6308 From selectminbits.U:
6309 This variable holds the minimum number of bits operated by select.
6311 That is, if you do select(n, ...), how many bits at least will be
6312 cleared in the masks if some activity is detected. Usually this is
6313 either n or 32*ceil(n/32), especially many little-endians do the
6314 latter. This is only useful if you have select(), naturally.
6315 "selecttype"
6317 From selecttype.U:
6318 This variable holds the type used for the 2nd, 3rd, and 4th
6320 arguments to select. Usually, this is "fd_set *", if "HAS_FD_SET"
6321 is defined, and "int *" otherwise. This is only useful if you have
6322 select(), naturally.
6323 "sendmail"
6325 From Loc.U:
6326 This variable is defined but not used by Configure. The value is
6328 the empty string and is not useful.
6329 "setgrent_r_proto"
6331 From d_setgrent_r.U:
6332 This variable encodes the prototype of setgrent_r. It is zero if
6334 d_setgrent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6335 macros of reentr.h if d_setgrent_r is defined.
6336 "sethostent_r_proto"
6338 From d_sethostent_r.U:
6339 This variable encodes the prototype of sethostent_r. It is zero if
6341 d_sethostent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6342 macros of reentr.h if d_sethostent_r is defined.
6343 "setlocale_r_proto"
6345 From d_setlocale_r.U:
6346 This variable encodes the prototype of setlocale_r. It is zero if
6348 d_setlocale_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6349 macros of reentr.h if d_setlocale_r is defined.
6350 "setnetent_r_proto"
6352 From d_setnetent_r.U:
6353 This variable encodes the prototype of setnetent_r. It is zero if
6355 d_setnetent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6356 macros of reentr.h if d_setnetent_r is defined.
6357 "setprotoent_r_proto"
6359 From d_setprotoent_r.U:
6360 This variable encodes the prototype of setprotoent_r. It is zero
6362 if d_setprotoent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6363 macros of reentr.h if d_setprotoent_r is defined.
6364 "setpwent_r_proto"
6366 From d_setpwent_r.U:
6367 This variable encodes the prototype of setpwent_r. It is zero if
6369 d_setpwent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6370 macros of reentr.h if d_setpwent_r is defined.
6371 "setservent_r_proto"
6373 From d_setservent_r.U:
6374 This variable encodes the prototype of setservent_r. It is zero if
6376 d_setservent_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6377 macros of reentr.h if d_setservent_r is defined.
6378 "sGMTIME_max"
6380 From time_size.U:
6381 This variable defines the maximum value of the time_t offset that
6383 the system function gmtime () accepts
6384 "sGMTIME_min"
6386 From time_size.U:
6387 This variable defines the minimum value of the time_t offset that
6389 the system function gmtime () accepts
6390 "sh"
6392 From sh.U:
6393 This variable contains the full pathname of the shell used on this
6395 system to execute Bourne shell scripts. Usually, this will be
6396 /bin/sh, though it's possible that some systems will have /bin/ksh,
6397 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
6398 D:/bin/sh.exe. This unit comes before Options.U, so you can't set
6399 sh with a "-D" option, though you can override this (and startsh)
6400 with "-O -Dsh=/bin/whatever -Dstartsh=whatever"
6401 "shar"
6403 From Loc.U:
6404 This variable is defined but not used by Configure. The value is
6406 the empty string and is not useful.
6407 "sharpbang"
6409 From spitshell.U:
6410 This variable contains the string #! if this system supports that
6412 construct.
6413 "shmattype"
6415 From d_shmat.U:
6416 This symbol contains the type of pointer returned by shmat(). It
6418 can be "void *" or "char *".
6419 "shortsize"
6421 From intsize.U:
6422 This variable contains the value of the "SHORTSIZE" symbol which
6424 indicates to the C program how many bytes there are in a short.
6425 "shrpenv"
6427 From libperl.U:
6428 If the user builds a shared libperl.so, then we need to tell the
6430 "perl" executable where it will be able to find the installed
6431 libperl.so. One way to do this on some systems is to set the
6432 environment variable "LD_RUN_PATH" to the directory that will be
6433 the final location of the shared libperl.so. The makefile can use
6434 this with something like $shrpenv $("CC") -o perl perlmain.o
6435 $libperl $libs Typical values are shrpenv="env
6436 "LD_RUN_PATH"=$archlibexp/"CORE"" or shrpenv='' See the main perl
6437 Makefile.SH for actual working usage. Alternatively, we might be
6438 able to use a command line option such as -R $archlibexp/"CORE"
6439 (Solaris) or -Wl,-rpath $archlibexp/"CORE" (Linux).
6440 "shsharp"
6442 From spitshell.U:
6443 This variable tells further Configure units whether your sh can
6445 handle # comments.
6446 "sig_count"
6448 From sig_name.U:
6449 This variable holds a number larger than the largest valid signal
6451 number. This is usually the same as the "NSIG" macro.
6452 "sig_name"
6454 From sig_name.U:
6455 This variable holds the signal names, space separated. The leading
6457 "SIG" in signal name is removed. A "ZERO" is prepended to the
6458 list. This is currently not used, sig_name_init is used instead.
6459 "sig_name_init"
6461 From sig_name.U:
6462 This variable holds the signal names, enclosed in double quotes and
6464 separated by commas, suitable for use in the "SIG_NAME" definition
6465 below. A "ZERO" is prepended to the list, and the list is
6466 terminated with a plain 0. The leading "SIG" in signal names is
6467 removed. See sig_num.
6468 "sig_num"
6470 From sig_name.U:
6471 This variable holds the signal numbers, space separated. A "ZERO"
6473 is prepended to the list (corresponding to the fake "SIGZERO").
6474 Those numbers correspond to the value of the signal listed in the
6475 same place within the sig_name list. This is currently not used,
6476 sig_num_init is used instead.
6477 "sig_num_init"
6479 From sig_name.U:
6480 This variable holds the signal numbers, enclosed in double quotes
6482 and separated by commas, suitable for use in the "SIG_NUM"
6483 definition below. A "ZERO" is prepended to the list, and the list
6484 is terminated with a plain 0.
6485 "sig_size"
6487 From sig_name.U:
6488 This variable contains the number of elements of the sig_name and
6490 sig_num arrays.
6491 "signal_t"
6493 From d_voidsig.U:
6494 This variable holds the type of the signal handler (void or int).
6496 "sitearch"
6498 From sitearch.U:
6499 This variable contains the eventual value of the "SITEARCH" symbol,
6501 which is the name of the private library for this package. It may
6502 have a ~ on the front. It is up to the makefile to eventually
6503 create this directory while performing installation (with ~
6504 substitution). The standard distribution will put nothing in this
6505 directory. After perl has been installed, users may install their
6506 own local architecture-dependent modules in this directory with
6507 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
6508 "sitearchexp"
6510 From sitearch.U:
6511 This variable is the ~name expanded version of sitearch, so that
6513 you may use it directly in Makefiles or shell scripts.
6514 "sitebin"
6516 From sitebin.U:
6517 This variable holds the name of the directory in which the user
6519 wants to put add-on publicly executable files for the package in
6520 question. It is most often a local directory such as
6521 /usr/local/bin. Programs using this variable must be prepared to
6522 deal with ~name substitution. The standard distribution will put
6523 nothing in this directory. After perl has been installed, users
6524 may install their own local executables in this directory with
6525 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
6526 "sitebinexp"
6528 From sitebin.U:
6529 This is the same as the sitebin variable, but is filename expanded
6531 at configuration time, for use in your makefiles.
6532 "sitehtml1dir"
6534 From sitehtml1dir.U:
6535 This variable contains the name of the directory in which site-
6537 specific html source pages are to be put. It is the responsibility
6538 of the Makefile.SH to get the value of this into the proper
6539 command. You must be prepared to do the ~name expansion yourself.
6540 The standard distribution will put nothing in this directory.
6541 After perl has been installed, users may install their own local
6542 html pages in this directory with MakeMaker Makefile.PL or
6543 equivalent. See "INSTALL" for details.
6544 "sitehtml1direxp"
6546 From sitehtml1dir.U:
6547 This variable is the same as the sitehtml1dir variable, but is
6549 filename expanded at configuration time, for convenient use in
6550 makefiles.
6551 "sitehtml3dir"
6553 From sitehtml3dir.U:
6554 This variable contains the name of the directory in which site-
6556 specific library html source pages are to be put. It is the
6557 responsibility of the Makefile.SH to get the value of this into the
6558 proper command. You must be prepared to do the ~name expansion
6559 yourself. The standard distribution will put nothing in this
6560 directory. After perl has been installed, users may install their
6561 own local library html pages in this directory with MakeMaker
6562 Makefile.PL or equivalent. See "INSTALL" for details.
6563 "sitehtml3direxp"
6565 From sitehtml3dir.U:
6566 This variable is the same as the sitehtml3dir variable, but is
6568 filename expanded at configuration time, for convenient use in
6569 makefiles.
6570 "sitelib"
6572 From sitelib.U:
6573 This variable contains the eventual value of the "SITELIB" symbol,
6575 which is the name of the private library for this package. It may
6576 have a ~ on the front. It is up to the makefile to eventually
6577 create this directory while performing installation (with ~
6578 substitution). The standard distribution will put nothing in this
6579 directory. After perl has been installed, users may install their
6580 own local architecture-independent modules in this directory with
6581 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
6582 "sitelib_stem"
6584 From sitelib.U:
6585 This variable is $sitelibexp with any trailing version-specific
6587 component removed. The elements in inc_version_list
6588 (inc_version_list.U) can be tacked onto this variable to generate a
6589 list of directories to search.
6590 "sitelibexp"
6592 From sitelib.U:
6593 This variable is the ~name expanded version of sitelib, so that you
6595 may use it directly in Makefiles or shell scripts.
6596 "siteman1dir"
6598 From siteman1dir.U:
6599 This variable contains the name of the directory in which site-
6601 specific manual source pages are to be put. It is the
6602 responsibility of the Makefile.SH to get the value of this into the
6603 proper command. You must be prepared to do the ~name expansion
6604 yourself. The standard distribution will put nothing in this
6605 directory. After perl has been installed, users may install their
6606 own local man1 pages in this directory with MakeMaker Makefile.PL
6607 or equivalent. See "INSTALL" for details.
6608 "siteman1direxp"
6610 From siteman1dir.U:
6611 This variable is the same as the siteman1dir variable, but is
6613 filename expanded at configuration time, for convenient use in
6614 makefiles.
6615 "siteman3dir"
6617 From siteman3dir.U:
6618 This variable contains the name of the directory in which site-
6620 specific library man source pages are to be put. It is the
6621 responsibility of the Makefile.SH to get the value of this into the
6622 proper command. You must be prepared to do the ~name expansion
6623 yourself. The standard distribution will put nothing in this
6624 directory. After perl has been installed, users may install their
6625 own local man3 pages in this directory with MakeMaker Makefile.PL
6626 or equivalent. See "INSTALL" for details.
6627 "siteman3direxp"
6629 From siteman3dir.U:
6630 This variable is the same as the siteman3dir variable, but is
6632 filename expanded at configuration time, for convenient use in
6633 makefiles.
6634 "siteprefix"
6636 From siteprefix.U:
6637 This variable holds the full absolute path of the directory below
6639 which the user will install add-on packages. See "INSTALL" for
6640 usage and examples.
6641 "siteprefixexp"
6643 From siteprefix.U:
6644 This variable holds the full absolute path of the directory below
6646 which the user will install add-on packages. Derived from
6647 siteprefix.
6648 "sitescript"
6650 From sitescript.U:
6651 This variable holds the name of the directory in which the user
6653 wants to put add-on publicly executable files for the package in
6654 question. It is most often a local directory such as
6655 /usr/local/bin. Programs using this variable must be prepared to
6656 deal with ~name substitution. The standard distribution will put
6657 nothing in this directory. After perl has been installed, users
6658 may install their own local scripts in this directory with
6659 MakeMaker Makefile.PL or equivalent. See "INSTALL" for details.
6660 "sitescriptexp"
6662 From sitescript.U:
6663 This is the same as the sitescript variable, but is filename
6665 expanded at configuration time, for use in your makefiles.
6666 "sizesize"
6668 From sizesize.U:
6669 This variable contains the size of a sizetype in bytes.
6671 "sizetype"
6673 From sizetype.U:
6674 This variable defines sizetype to be something like size_t,
6676 unsigned long, or whatever type is used to declare length
6677 parameters for string functions.
6678 "sleep"
6680 From Loc.U:
6681 This variable is defined but not used by Configure. The value is
6683 the empty string and is not useful.
6684 "sLOCALTIME_max"
6686 From time_size.U:
6687 This variable defines the maximum value of the time_t offset that
6689 the system function localtime () accepts
6690 "sLOCALTIME_min"
6692 From time_size.U:
6693 This variable defines the minimum value of the time_t offset that
6695 the system function localtime () accepts
6696 "smail"
6698 From Loc.U:
6699 This variable is defined but not used by Configure. The value is
6701 the empty string and is not useful.
6702 "so"
6704 From so.U:
6705 This variable holds the extension used to identify shared libraries
6707 (also known as shared objects) on the system. Usually set to "so".
6708 "sockethdr"
6710 From d_socket.U:
6711 This variable has any cpp "-I" flags needed for socket support.
6713 "socketlib"
6715 From d_socket.U:
6716 This variable has the names of any libraries needed for socket
6718 support.
6719 "socksizetype"
6721 From socksizetype.U:
6722 This variable holds the type used for the size argument for various
6724 socket calls like accept. Usual values include socklen_t, size_t,
6725 and int.
6726 "sort"
6728 From Loc.U:
6729 This variable is used internally by Configure to determine the full
6731 pathname (if any) of the sort program. After Configure runs, the
6732 value is reset to a plain "sort" and is not useful.
6733 "spackage"
6735 From package.U:
6736 This variable contains the name of the package being constructed,
6738 with the first letter uppercased, i.e. suitable for starting
6739 sentences.
6740 "spitshell"
6742 From spitshell.U:
6743 This variable contains the command necessary to spit out a runnable
6745 shell on this system. It is either cat or a grep "-v" for #
6746 comments.
6747 "sPRId64"
6749 From quadfio.U:
6750 This variable, if defined, contains the string used by stdio to
6752 format 64-bit decimal numbers (format "d") for output.
6753 "sPRIeldbl"
6755 From longdblfio.U:
6756 This variable, if defined, contains the string used by stdio to
6758 format long doubles (format "e") for output.
6759 "sPRIEUldbl"
6761 From longdblfio.U:
6762 This variable, if defined, contains the string used by stdio to
6764 format long doubles (format "E") for output. The "U" in the name
6765 is to separate this from sPRIeldbl so that even case-blind systems
6766 can see the difference.
6767 "sPRIfldbl"
6769 From longdblfio.U:
6770 This variable, if defined, contains the string used by stdio to
6772 format long doubles (format "f") for output.
6773 "sPRIFUldbl"
6775 From longdblfio.U:
6776 This variable, if defined, contains the string used by stdio to
6778 format long doubles (format "F") for output. The "U" in the name
6779 is to separate this from sPRIfldbl so that even case-blind systems
6780 can see the difference.
6781 "sPRIgldbl"
6783 From longdblfio.U:
6784 This variable, if defined, contains the string used by stdio to
6786 format long doubles (format "g") for output.
6787 "sPRIGUldbl"
6789 From longdblfio.U:
6790 This variable, if defined, contains the string used by stdio to
6792 format long doubles (format "G") for output. The "U" in the name
6793 is to separate this from sPRIgldbl so that even case-blind systems
6794 can see the difference.
6795 "sPRIi64"
6797 From quadfio.U:
6798 This variable, if defined, contains the string used by stdio to
6800 format 64-bit decimal numbers (format "i") for output.
6801 "sPRIo64"
6803 From quadfio.U:
6804 This variable, if defined, contains the string used by stdio to
6806 format 64-bit octal numbers (format "o") for output.
6807 "sPRIu64"
6809 From quadfio.U:
6810 This variable, if defined, contains the string used by stdio to
6812 format 64-bit unsigned decimal numbers (format "u") for output.
6813 "sPRIx64"
6815 From quadfio.U:
6816 This variable, if defined, contains the string used by stdio to
6818 format 64-bit hexadecimal numbers (format "x") for output.
6819 "sPRIXU64"
6821 From quadfio.U:
6822 This variable, if defined, contains the string used by stdio to
6824 format 64-bit hExADECimAl numbers (format "X") for output. The "U"
6825 in the name is to separate this from sPRIx64 so that even case-
6826 blind systems can see the difference.
6827 "srand48_r_proto"
6829 From d_srand48_r.U:
6830 This variable encodes the prototype of srand48_r. It is zero if
6832 d_srand48_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6833 of reentr.h if d_srand48_r is defined.
6834 "srandom_r_proto"
6836 From d_srandom_r.U:
6837 This variable encodes the prototype of srandom_r. It is zero if
6839 d_srandom_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
6840 of reentr.h if d_srandom_r is defined.
6841 "src"
6843 From src.U:
6844 This variable holds the (possibly relative) path of the package
6846 source. It is up to the Makefile to use this variable and set
6847 "VPATH" accordingly to find the sources remotely. Use $pkgsrc to
6848 have an absolute path.
6849 "sSCNfldbl"
6851 From longdblfio.U:
6852 This variable, if defined, contains the string used by stdio to
6854 format long doubles (format "f") for input.
6855 "ssizetype"
6857 From ssizetype.U:
6858 This variable defines ssizetype to be something like ssize_t, long
6860 or int. It is used by functions that return a count of bytes or an
6861 error condition. It must be a signed type. We will pick a type
6862 such that sizeof(SSize_t) == sizeof(Size_t).
6863 "st_ino_sign"
6865 From st_ino_def.U:
6866 This variable contains the signedness of struct stat's st_ino. 1
6868 for unsigned, -1 for signed.
6869 "st_ino_size"
6871 From st_ino_def.U:
6872 This variable contains the size of struct stat's st_ino in bytes.
6874 "startperl"
6876 From startperl.U:
6877 This variable contains the string to put on the front of a perl
6879 script to make sure (hopefully) that it runs with perl and not some
6880 shell. Of course, that leading line must be followed by the
6881 classical perl idiom: eval 'exec perl -S $0 ${1+$@}' if
6882 $running_under_some_shell; to guarantee perl startup should the
6883 shell execute the script. Note that this magic incantation is not
6884 understood by csh.
6885 "startsh"
6887 From startsh.U:
6888 This variable contains the string to put on the front of a shell
6890 script to make sure (hopefully) that it runs with sh and not some
6891 other shell.
6892 "static_ext"
6894 From Extensions.U:
6895 This variable holds a list of "XS" extension files we want to link
6897 statically into the package. It is used by Makefile.
6898 "stdchar"
6900 From stdchar.U:
6901 This variable conditionally defines "STDCHAR" to be the type of
6903 char used in stdio.h. It has the values "unsigned char" or "char".
6904 "stdio_base"
6906 From d_stdstdio.U:
6907 This variable defines how, given a "FILE" pointer, fp, to access
6909 the _base field (or equivalent) of stdio.h's "FILE" structure.
6910 This will be used to define the macro FILE_base(fp).
6911 "stdio_bufsiz"
6913 From d_stdstdio.U:
6914 This variable defines how, given a "FILE" pointer, fp, to determine
6916 the number of bytes store in the I/O buffer pointer to by the _base
6917 field (or equivalent) of stdio.h's "FILE" structure. This will be
6918 used to define the macro FILE_bufsiz(fp).
6919 "stdio_cnt"
6921 From d_stdstdio.U:
6922 This variable defines how, given a "FILE" pointer, fp, to access
6924 the _cnt field (or equivalent) of stdio.h's "FILE" structure. This
6925 will be used to define the macro FILE_cnt(fp).
6926 "stdio_filbuf"
6928 From d_stdstdio.U:
6929 This variable defines how, given a "FILE" pointer, fp, to tell
6931 stdio to refill its internal buffers (?). This will be used to
6932 define the macro FILE_filbuf(fp).
6933 "stdio_ptr"
6935 From d_stdstdio.U:
6936 This variable defines how, given a "FILE" pointer, fp, to access
6938 the _ptr field (or equivalent) of stdio.h's "FILE" structure. This
6939 will be used to define the macro FILE_ptr(fp).
6940 "stdio_stream_array"
6942 From stdio_streams.U:
6943 This variable tells the name of the array holding the stdio
6945 streams. Usual values include _iob, __iob, and __sF.
6946 "strerror_r_proto"
6948 From d_strerror_r.U:
6949 This variable encodes the prototype of strerror_r. It is zero if
6951 d_strerror_r is undef, and one of the "REENTRANT_PROTO_T_ABC"
6952 macros of reentr.h if d_strerror_r is defined.
6953 "strings"
6955 From i_string.U:
6956 This variable holds the full path of the string header that will be
6958 used. Typically /usr/include/string.h or /usr/include/strings.h.
6959 "submit"
6961 From Loc.U:
6962 This variable is defined but not used by Configure. The value is
6964 the empty string and is not useful.
6965 "subversion"
6967 From patchlevel.U:
6968 The subversion level of this package. The value of subversion
6970 comes from the patchlevel.h file. In a version number such as
6971 5.6.1, this is the 1. In patchlevel.h, this is referred to as
6972 "PERL_SUBVERSION". This is unique to perl.
6973 "sysman"
6975 From sysman.U:
6976 This variable holds the place where the manual is located on this
6978 system. It is not the place where the user wants to put his manual
6979 pages. Rather it is the place where Configure may look to find
6980 manual for unix commands (section 1 of the manual usually). See
6981 mansrc.
6982 t
6984 "tail"
6985 From Loc.U:
6986 This variable is defined but not used by Configure. The value is
6988 the empty string and is not useful.
6989 "tar"
6991 From Loc.U:
6992 This variable is defined but not used by Configure. The value is
6994 the empty string and is not useful.
6995 "targetarch"
6997 From Cross.U:
6998 If cross-compiling, this variable contains the target architecture.
7000 If not, this will be empty.
7001 "tbl"
7003 From Loc.U:
7004 This variable is defined but not used by Configure. The value is
7006 the empty string and is not useful.
7007 "tee"
7009 From Loc.U:
7010 This variable is defined but not used by Configure. The value is
7012 the empty string and is not useful.
7013 "test"
7015 From Loc.U:
7016 This variable is used internally by Configure to determine the full
7018 pathname (if any) of the test program. After Configure runs, the
7019 value is reset to a plain "test" and is not useful.
7020 "timeincl"
7022 From i_time.U:
7023 This variable holds the full path of the included time header(s).
7025 "timetype"
7027 From d_time.U:
7028 This variable holds the type returned by time(). It can be long, or
7030 time_t on "BSD" sites (in which case <sys/types.h> should be
7031 included). Anyway, the type Time_t should be used.
7032 "tmpnam_r_proto"
7034 From d_tmpnam_r.U:
7035 This variable encodes the prototype of tmpnam_r. It is zero if
7037 d_tmpnam_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7038 of reentr.h if d_tmpnam_r is defined.
7039 "to"
7041 From Cross.U:
7042 This variable contains the command used by Configure to copy to
7044 from the target host. Useful and available only during Perl build.
7045 The string ":" if not cross-compiling.
7046 "touch"
7048 From Loc.U:
7049 This variable is used internally by Configure to determine the full
7051 pathname (if any) of the touch program. After Configure runs, the
7052 value is reset to a plain "touch" and is not useful.
7053 "tr"
7055 From Loc.U:
7056 This variable is used internally by Configure to determine the full
7058 pathname (if any) of the tr program. After Configure runs, the
7059 value is reset to a plain "tr" and is not useful.
7060 "trnl"
7062 From trnl.U:
7063 This variable contains the value to be passed to the tr(1) command
7065 to transliterate a newline. Typical values are "\012" and "\n".
7066 This is needed for "EBCDIC" systems where newline is not
7067 necessarily "\012".
7068 "troff"
7070 From Loc.U:
7071 This variable is defined but not used by Configure. The value is
7073 the empty string and is not useful.
7074 "ttyname_r_proto"
7076 From d_ttyname_r.U:
7077 This variable encodes the prototype of ttyname_r. It is zero if
7079 d_ttyname_r is undef, and one of the "REENTRANT_PROTO_T_ABC" macros
7080 of reentr.h if d_ttyname_r is defined.
7081 u
7083 "u16size"
7084 From perlxv.U:
7085 This variable is the size of an U16 in bytes.
7087 "u16type"
7089 From perlxv.U:
7090 This variable contains the C type used for Perl's U16.
7092 "u32size"
7094 From perlxv.U:
7095 This variable is the size of an U32 in bytes.
7097 "u32type"
7099 From perlxv.U:
7100 This variable contains the C type used for Perl's U32.
7102 "u64size"
7104 From perlxv.U:
7105 This variable is the size of an U64 in bytes.
7107 "u64type"
7109 From perlxv.U:
7110 This variable contains the C type used for Perl's U64.
7112 "u8size"
7114 From perlxv.U:
7115 This variable is the size of an U8 in bytes.
7117 "u8type"
7119 From perlxv.U:
7120 This variable contains the C type used for Perl's U8.
7122 "uidformat"
7124 From uidf.U:
7125 This variable contains the format string used for printing a Uid_t.
7127 "uidsign"
7129 From uidsign.U:
7130 This variable contains the signedness of a uidtype. 1 for
7132 unsigned, -1 for signed.
7133 "uidsize"
7135 From uidsize.U:
7136 This variable contains the size of a uidtype in bytes.
7138 "uidtype"
7140 From uidtype.U:
7141 This variable defines Uid_t to be something like uid_t, int,
7143 ushort, or whatever type is used to declare user ids in the kernel.
7144 "uname"
7146 From Loc.U:
7147 This variable is used internally by Configure to determine the full
7149 pathname (if any) of the uname program. After Configure runs, the
7150 value is reset to a plain "uname" and is not useful.
7151 "uniq"
7153 From Loc.U:
7154 This variable is used internally by Configure to determine the full
7156 pathname (if any) of the uniq program. After Configure runs, the
7157 value is reset to a plain "uniq" and is not useful.
7158 "uquadtype"
7160 From quadtype.U:
7161 This variable defines Uquad_t to be something like unsigned long,
7163 unsigned int, unsigned long long, uint64_t, or whatever type is
7164 used for 64-bit integers.
7165 "use5005threads"
7167 From usethreads.U:
7168 This variable conditionally defines the USE_5005THREADS symbol, and
7170 indicates that Perl should be built to use the 5.005-based
7171 threading implementation. Only valid up to 5.8.x.
7172 "use64bitall"
7174 From use64bits.U:
7175 This variable conditionally defines the USE_64_BIT_ALL symbol, and
7177 indicates that 64-bit integer types should be used when available.
7178 The maximal possible 64-bitness is employed: LP64 or ILP64, meaning
7179 that you will be able to use more than 2 gigabytes of memory. This
7180 mode is even more binary incompatible than USE_64_BIT_INT. You may
7181 not be able to run the resulting executable in a 32-bit "CPU" at
7182 all or you may need at least to reboot your "OS" to 64-bit mode.
7183 "use64bitint"
7185 From use64bits.U:
7186 This variable conditionally defines the USE_64_BIT_INT symbol, and
7188 indicates that 64-bit integer types should be used when available.
7189 The minimal possible 64-bitness is employed, just enough to get
7190 64-bit integers into Perl. This may mean using for example "long
7191 longs", while your memory may still be limited to 2 gigabytes.
7192 "usecrosscompile"
7194 From Cross.U:
7195 This variable conditionally defines the "USE_CROSS_COMPILE" symbol,
7197 and indicates that Perl has been cross-compiled.
7198 "usedevel"
7200 From Devel.U:
7201 This variable indicates that Perl was configured with development
7203 features enabled. This should not be done for production builds.
7204 "usedl"
7206 From dlsrc.U:
7207 This variable indicates if the system supports dynamic loading of
7209 some sort. See also dlsrc and dlobj.
7210 "usedtrace"
7212 From usedtrace.U:
7213 This variable indicates whether we are compiling with dtrace
7215 support. See also dtrace.
7216 "usefaststdio"
7218 From usefaststdio.U:
7219 This variable conditionally defines the "USE_FAST_STDIO" symbol,
7221 and indicates that Perl should be built to use "fast stdio".
7222 Defaults to define in Perls 5.8 and earlier, to undef later.
7223 "useithreads"
7225 From usethreads.U:
7226 This variable conditionally defines the "USE_ITHREADS" symbol, and
7228 indicates that Perl should be built to use the interpreter-based
7229 threading implementation.
7230 "usekernprocpathname"
7232 From usekernprocpathname.U:
7233 This variable, indicates that we can use sysctl with
7235 "KERN_PROC_PATHNAME" to get a full path for the executable, and
7236 hence convert $^X to an absolute path.
7237 "uselargefiles"
7239 From uselfs.U:
7240 This variable conditionally defines the "USE_LARGE_FILES" symbol,
7242 and indicates that large file interfaces should be used when
7243 available.
7244 "uselongdouble"
7246 From uselongdbl.U:
7247 This variable conditionally defines the "USE_LONG_DOUBLE" symbol,
7249 and indicates that long doubles should be used when available.
7250 "usemallocwrap"
7252 From mallocsrc.U:
7253 This variable contains y if we are wrapping malloc to prevent
7255 integer overflow during size calculations.
7256 "usemorebits"
7258 From usemorebits.U:
7259 This variable conditionally defines the "USE_MORE_BITS" symbol, and
7261 indicates that explicit 64-bit interfaces and long doubles should
7262 be used when available.
7263 "usemultiplicity"
7265 From usemultiplicity.U:
7266 This variable conditionally defines the "MULTIPLICITY" symbol, and
7268 indicates that Perl should be built to use multiplicity.
7269 "usemymalloc"
7271 From mallocsrc.U:
7272 This variable contains y if the malloc that comes with this package
7274 is desired over the system's version of malloc. People often
7275 include special versions of malloc for efficiency, but such
7276 versions are often less portable. See also mallocsrc and
7277 mallocobj. If this is "y", then -lmalloc is removed from $libs.
7278 "usenm"
7280 From usenm.U:
7281 This variable contains "true" or "false" depending whether the nm
7283 extraction is wanted or not.
7284 "usensgetexecutablepath"
7286 From usensgetexecutablepath.U:
7287 This symbol, if defined, indicates that we can use
7289 _NSGetExecutablePath and realpath to get a full path for the
7290 executable, and hence convert $^X to an absolute path.
7291 "useopcode"
7293 From Extensions.U:
7294 This variable holds either "true" or "false" to indicate whether
7296 the Opcode extension should be used. The sole use for this
7297 currently is to allow an easy mechanism for users to skip the
7298 Opcode extension from the Configure command line.
7299 "useperlio"
7301 From useperlio.U:
7302 This variable conditionally defines the "USE_PERLIO" symbol, and
7304 indicates that the PerlIO abstraction should be used throughout.
7305 "useposix"
7307 From Extensions.U:
7308 This variable holds either "true" or "false" to indicate whether
7310 the "POSIX" extension should be used. The sole use for this
7311 currently is to allow an easy mechanism for hints files to indicate
7312 that "POSIX" will not compile on a particular system.
7313 "usereentrant"
7315 From usethreads.U:
7316 This variable conditionally defines the "USE_REENTRANT_API" symbol,
7318 which indicates that the thread code may try to use the various _r
7319 versions of library functions. This is only potentially meaningful
7320 if usethreads is set and is very experimental, it is not even
7321 prompted for.
7322 "userelocatableinc"
7324 From bin.U:
7325 This variable is set to true to indicate that perl should relocate
7327 @"INC" entries at runtime based on the path to the perl binary.
7328 Any @"INC" paths starting .../ are relocated relative to the
7329 directory containing the perl binary, and a logical cleanup of the
7330 path is then made around the join point (removing dir/../ pairs)
7331 "usesfio"
7333 From d_sfio.U:
7334 This variable is set to true when the user agrees to use sfio. It
7336 is set to false when sfio is not available or when the user
7337 explicitly requests not to use sfio. It is here primarily so that
7338 command-line settings can override the auto-detection of d_sfio
7339 without running into a "WHOA THERE".
7340 "useshrplib"
7342 From libperl.U:
7343 This variable is set to "true" if the user wishes to build a shared
7345 libperl, and "false" otherwise.
7346 "usesitecustomize"
7348 From d_sitecustomize.U:
7349 This variable is set to true when the user requires a mechanism
7351 that allows the sysadmin to add entries to @"INC" at runtime. This
7352 variable being set, makes perl run $sitelib/sitecustomize.pl at
7353 startup.
7354 "usesocks"
7356 From usesocks.U:
7357 This variable conditionally defines the "USE_SOCKS" symbol, and
7359 indicates that Perl should be built to use "SOCKS".
7360 "usethreads"
7362 From usethreads.U:
7363 This variable conditionally defines the "USE_THREADS" symbol, and
7365 indicates that Perl should be built to use threads.
7366 "usevendorprefix"
7368 From vendorprefix.U:
7369 This variable tells whether the vendorprefix and consequently other
7371 vendor* paths are in use.
7372 "usevfork"
7374 From d_vfork.U:
7375 This variable is set to true when the user accepts to use vfork.
7377 It is set to false when no vfork is available or when the user
7378 explicitly requests not to use vfork.
7379 "usrinc"
7381 From usrinc.U:
7382 This variable holds the path of the include files, which is usually
7384 /usr/include. It is mainly used by other Configure units.
7385 "uuname"
7387 From Loc.U:
7388 This variable is defined but not used by Configure. The value is
7390 the empty string and is not useful.
7391 "uvoformat"
7393 From perlxvf.U:
7394 This variable contains the format string used for printing a Perl
7396 "UV" as an unsigned octal integer.
7397 "uvsize"
7399 From perlxv.U:
7400 This variable is the size of a "UV" in bytes.
7402 "uvtype"
7404 From perlxv.U:
7405 This variable contains the C type used for Perl's "UV".
7407 "uvuformat"
7409 From perlxvf.U:
7410 This variable contains the format string used for printing a Perl
7412 "UV" as an unsigned decimal integer.
7413 "uvxformat"
7415 From perlxvf.U:
7416 This variable contains the format string used for printing a Perl
7418 "UV" as an unsigned hexadecimal integer in lowercase abcdef.
7419 "uvXUformat"
7421 From perlxvf.U:
7422 This variable contains the format string used for printing a Perl
7424 "UV" as an unsigned hexadecimal integer in uppercase "ABCDEF".
7425 v
7427 "vaproto"
7428 From vaproto.U:
7429 This variable conditionally defines "CAN_VAPROTO" on systems
7431 supporting prototype declaration of functions with a variable
7432 number of arguments. See also prototype.
7433 "vendorarch"
7435 From vendorarch.U:
7436 This variable contains the value of the "PERL_VENDORARCH" symbol.
7438 It may have a ~ on the front. The standard distribution will put
7439 nothing in this directory. Vendors who distribute perl may wish to
7440 place their own architecture-dependent modules and extensions in
7441 this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or
7442 equivalent. See "INSTALL" for details.
7443 "vendorarchexp"
7445 From vendorarch.U:
7446 This variable is the ~name expanded version of vendorarch, so that
7448 you may use it directly in Makefiles or shell scripts.
7449 "vendorbin"
7451 From vendorbin.U:
7452 This variable contains the eventual value of the "VENDORBIN"
7454 symbol. It may have a ~ on the front. The standard distribution
7455 will put nothing in this directory. Vendors who distribute perl
7456 may wish to place additional binaries in this directory with
7457 MakeMaker Makefile.PL "INSTALLDIRS"=vendor or equivalent. See
7458 "INSTALL" for details.
7459 "vendorbinexp"
7461 From vendorbin.U:
7462 This variable is the ~name expanded version of vendorbin, so that
7464 you may use it directly in Makefiles or shell scripts.
7465 "vendorhtml1dir"
7467 From vendorhtml1dir.U:
7468 This variable contains the name of the directory for html pages.
7470 It may have a ~ on the front. The standard distribution will put
7471 nothing in this directory. Vendors who distribute perl may wish to
7472 place their own html pages in this directory with MakeMaker
7473 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
7474 details.
7475 "vendorhtml1direxp"
7477 From vendorhtml1dir.U:
7478 This variable is the ~name expanded version of vendorhtml1dir, so
7480 that you may use it directly in Makefiles or shell scripts.
7481 "vendorhtml3dir"
7483 From vendorhtml3dir.U:
7484 This variable contains the name of the directory for html library
7486 pages. It may have a ~ on the front. The standard distribution
7487 will put nothing in this directory. Vendors who distribute perl
7488 may wish to place their own html pages for modules and extensions
7489 in this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor
7490 or equivalent. See "INSTALL" for details.
7491 "vendorhtml3direxp"
7493 From vendorhtml3dir.U:
7494 This variable is the ~name expanded version of vendorhtml3dir, so
7496 that you may use it directly in Makefiles or shell scripts.
7497 "vendorlib"
7499 From vendorlib.U:
7500 This variable contains the eventual value of the "VENDORLIB"
7502 symbol, which is the name of the private library for this package.
7503 The standard distribution will put nothing in this directory.
7504 Vendors who distribute perl may wish to place their own modules in
7505 this directory with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or
7506 equivalent. See "INSTALL" for details.
7507 "vendorlib_stem"
7509 From vendorlib.U:
7510 This variable is $vendorlibexp with any trailing version-specific
7512 component removed. The elements in inc_version_list
7513 (inc_version_list.U) can be tacked onto this variable to generate a
7514 list of directories to search.
7515 "vendorlibexp"
7517 From vendorlib.U:
7518 This variable is the ~name expanded version of vendorlib, so that
7520 you may use it directly in Makefiles or shell scripts.
7521 "vendorman1dir"
7523 From vendorman1dir.U:
7524 This variable contains the name of the directory for man1 pages.
7526 It may have a ~ on the front. The standard distribution will put
7527 nothing in this directory. Vendors who distribute perl may wish to
7528 place their own man1 pages in this directory with MakeMaker
7529 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
7530 details.
7531 "vendorman1direxp"
7533 From vendorman1dir.U:
7534 This variable is the ~name expanded version of vendorman1dir, so
7536 that you may use it directly in Makefiles or shell scripts.
7537 "vendorman3dir"
7539 From vendorman3dir.U:
7540 This variable contains the name of the directory for man3 pages.
7542 It may have a ~ on the front. The standard distribution will put
7543 nothing in this directory. Vendors who distribute perl may wish to
7544 place their own man3 pages in this directory with MakeMaker
7545 Makefile.PL "INSTALLDIRS"=vendor or equivalent. See "INSTALL" for
7546 details.
7547 "vendorman3direxp"
7549 From vendorman3dir.U:
7550 This variable is the ~name expanded version of vendorman3dir, so
7552 that you may use it directly in Makefiles or shell scripts.
7553 "vendorprefix"
7555 From vendorprefix.U:
7556 This variable holds the full absolute path of the directory below
7558 which the vendor will install add-on packages. See "INSTALL" for
7559 usage and examples.
7560 "vendorprefixexp"
7562 From vendorprefix.U:
7563 This variable holds the full absolute path of the directory below
7565 which the vendor will install add-on packages. Derived from
7566 vendorprefix.
7567 "vendorscript"
7569 From vendorscript.U:
7570 This variable contains the eventual value of the "VENDORSCRIPT"
7572 symbol. It may have a ~ on the front. The standard distribution
7573 will put nothing in this directory. Vendors who distribute perl
7574 may wish to place additional executable scripts in this directory
7575 with MakeMaker Makefile.PL "INSTALLDIRS"=vendor or equivalent. See
7576 "INSTALL" for details.
7577 "vendorscriptexp"
7579 From vendorscript.U:
7580 This variable is the ~name expanded version of vendorscript, so
7582 that you may use it directly in Makefiles or shell scripts.
7583 "version"
7585 From patchlevel.U:
7586 The full version number of this package, such as 5.6.1 (or 5_6_1).
7588 This combines revision, patchlevel, and subversion to get the full
7589 version number, including any possible subversions. This is
7590 suitable for use as a directory name, and hence is filesystem
7591 dependent.
7592 "version_patchlevel_string"
7594 From patchlevel.U:
7595 This is a string combining version, subversion and perl_patchlevel
7597 (if perl_patchlevel is non-zero). It is typically something like
7598 'version 7 subversion 1' or 'version 7 subversion 1 patchlevel
7599 11224' It is computed here to avoid duplication of code in
7600 myconfig.SH and lib/Config.pm.
7601 "versiononly"
7603 From versiononly.U:
7604 If set, this symbol indicates that only the version-specific
7606 components of a perl installation should be installed. This may be
7607 useful for making a test installation of a new version without
7608 disturbing the existing installation. Setting versiononly is
7609 equivalent to setting installperl's -v option. In particular, the
7610 non-versioned scripts and programs such as a2p, c2ph, h2xs, pod2*,
7611 and perldoc are not installed (see "INSTALL" for a more complete
7612 list). Nor are the man pages installed. Usually, this is undef.
7613 "vi"
7615 From Loc.U:
7616 This variable is defined but not used by Configure. The value is
7618 the empty string and is not useful.
7619 "voidflags"
7621 From voidflags.U:
7622 This variable contains the eventual value of the "VOIDFLAGS"
7624 symbol, which indicates how much support of the void type is given
7625 by this compiler. See "VOIDFLAGS" for more info.
7626 x
7628 "xlibpth"
7629 From libpth.U:
7630 This variable holds extra path (space-separated) used to find
7632 libraries on this platform, for example "CPU"-specific libraries
7633 (on multi-"CPU" platforms) may be listed here.
7634 y
7636 "yacc"
7637 From yacc.U:
7638 This variable holds the name of the compiler compiler we want to
7640 use in the Makefile. It can be yacc, byacc, or bison -y.
7641 "yaccflags"
7643 From yacc.U:
7644 This variable contains any additional yacc flags desired by the
7646 user. It is up to the Makefile to use this.
7647 z
7649 "zcat"
7650 From Loc.U:
7651 This variable is defined but not used by Configure. The value is
7653 the empty string and is not useful.
7654 "zip"
7656 From Loc.U:
7657 This variable is used internally by Configure to determine the full
7659 pathname (if any) of the zip program. After Configure runs, the
7660 value is reset to a plain "zip" and is not useful.
7661
7663 Information on the git commit from which the current perl binary was
7664 compiled can be found in the variable $Config::Git_Data. The variable
7665 is a structured string that looks something like this:
7666 git_commit_id='ea0c2dbd5f5ac6845ecc7ec6696415bf8e27bd52'
7668 git_describe='GitLive-blead-1076-gea0c2db'
7669 git_branch='smartmatch'
7670 git_uncommitted_changes=''
7671 git_commit_id_title='Commit id:'
7672 git_commit_date='2009-05-09 17:47:31 +0200'
7673 Its format is not guaranteed not to change over time.
7675
7677 This module contains a good example of how to use tie to implement a
7678 cache and an example of how to make a tied variable readonly to those
7679 outside of it.
7680perl v5.16.3 2019-01-21 Config(3pm)