2 !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
3 This file is built by metaconfig.
5 This file contains a description of all the shell variables whose value is
6 determined by the Configure script. Variables intended for use in C
7 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
8 generates pod documentation for Config.pm from this file--please try to keep
9 the formatting regular.]
12 This variable defines the extension used for ordinary library files.
13 For unix, it is '.a'. The '.' is included. Other possible
14 values include '.lib'.
17 This variable defines the extension used for executable files.
18 DJGPP, Cygwin and OS/2 use '.exe'. Stratus VOS uses '.pm'.
19 On operating systems which do not require a specific extension
20 for executable files, this variable is empty.
23 This variable defines the extension used for object files.
24 For unix, it is '.o'. The '.' is included. Other possible
25 values include '.obj'.
28 This variable is set to 'true' if AFS (Andrew File System) is used
29 on the system, 'false' otherwise. It is possible to override this
30 with a hint value or command line option, but you'd better know
34 This variable is by default set to '/afs'. In the unlikely case
35 this is not the correct root, it is possible to override this with
36 a hint value or command line option. This will be used in subsequent
37 tests for AFSness in the configure and test process.
39 alignbytes (alignbytes.U):
40 This variable holds the number of bytes required to align a
41 double-- or a long double when applicable. Usual values are
42 2, 4 and 8. The default is eight, for safety.
44 ansi2knr (ansi2knr.U):
45 This variable is set if the user needs to run ansi2knr.
46 Currently, this is not supported, so we just abort.
48 aphostname (d_gethname.U):
49 This variable contains the command which can be used to compute the
50 host name. The command is fully qualified by its absolute path, to make
51 it safe when used by a process with super-user privileges.
53 api_revision (patchlevel.U):
54 The three variables, api_revision, api_version, and
55 api_subversion, specify the version of the oldest perl binary
56 compatible with the present perl. In a full version string
57 such as '5.6.1', api_revision is the '5'.
58 Prior to 5.5.640, the format was a floating point number,
61 perl.c:incpush() and lib/lib.pm will automatically search in
62 $sitelib/.. for older directories back to the limit specified
63 by these api_ variables. This is only useful if you have a
64 perl library directory tree structured like the default one.
65 See INSTALL for how this works. The versioned site_perl
66 directory was introduced in 5.005, so that is the lowest
67 possible value. The version list appropriate for the current
68 system is determined in inc_version_list.U.
70 XXX To do: Since compatibility can depend on compile time
71 options (such as bincompat, longlong, etc.) it should
72 (perhaps) be set by Configure, but currently it isn't.
73 Currently, we read a hard-wired value from patchlevel.h.
74 Perhaps what we ought to do is take the hard-wired value from
75 patchlevel.h but then modify it if the current Configure
76 options warrant. patchlevel.h then would use an #ifdef guard.
78 api_subversion (patchlevel.U):
79 The three variables, api_revision, api_version, and
80 api_subversion, specify the version of the oldest perl binary
81 compatible with the present perl. In a full version string
82 such as '5.6.1', api_subversion is the '1'. See api_revision for
85 api_version (patchlevel.U):
86 The three variables, api_revision, api_version, and
87 api_subversion, specify the version of the oldest perl binary
88 compatible with the present perl. In a full version string
89 such as '5.6.1', api_version is the '6'. See api_revision for
90 full details. As a special case, 5.5.0 is rendered in the
91 old-style as 5.005. (In the 5.005_0x maintenance series,
92 this was the only versioned directory in $sitelib.)
94 api_versionstring (patchlevel.U):
95 This variable combines api_revision, api_version, and
96 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
97 for use as a directory name. This is filesystem dependent.
100 This variable is used internally by Configure to determine the
101 full pathname (if any) of the ar program. After Configure runs,
102 the value is reset to a plain "ar" and is not useful.
105 This variable holds the name of the directory in which the user wants
106 to put architecture-dependent public library files for $package.
107 It is most often a local directory such as /usr/local/lib.
108 Programs using this variable must be prepared to deal
109 with filename expansion.
111 archlibexp (archlib.U):
112 This variable is the same as the archlib variable, but is
113 filename expanded at configuration time, for convenient use.
115 archname (archname.U):
116 This variable is a short name to characterize the current
117 architecture. It is used mainly to construct the default archlib.
119 archname64 (use64bits.U):
120 This variable is used for the 64-bitness part of $archname.
123 This variable defines any additional objects that must be linked
124 in with the program on this architecture. On unix, it is usually
125 empty. It is typically used to include emulations of unix calls
126 or other facilities. For perl on OS/2, for example, this would
129 asctime_r_proto (d_asctime_r.U):
130 This variable encodes the prototype of asctime_r.
131 It is zero if d_asctime_r is undef, and one of the
132 REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
136 This variable is used internally by Configure to determine the
137 full pathname (if any) of the awk program. After Configure runs,
138 the value is reset to a plain "awk" and is not useful.
141 The base revision level of this package, from the .package file.
144 This variable is defined but not used by Configure.
145 The value is the empty string and is not useful.
148 This variable holds the name of the directory in which the user wants
149 to put publicly executable images for the package in question. It
150 is most often a local directory such as /usr/local/bin. Programs using
151 this variable must be prepared to deal with ~name substitution.
154 This variable saves the result from configure if generated binaries
155 are in ELF format. Only set to defined when the test has actually
156 been performed, and the result was positive.
159 This is the same as the bin variable, but is filename expanded at
160 configuration time, for use in your makefiles.
163 This variable is used internally by Configure to determine the
164 full pathname (if any) of the bison program. After Configure runs,
165 the value is reset to a plain "bison" and is not useful.
168 This variable is used internally by Configure to determine the
169 full pathname (if any) of the byacc program. After Configure runs,
170 the value is reset to a plain "byacc" and is not useful.
172 byteorder (byteorder.U):
173 This variable holds the byte order in a UV. In the following,
174 larger digits indicate more significance. The variable byteorder
175 is either 4321 on a big-endian machine, or 1234 on a little-endian,
176 or 87654321 on a Cray ... or 3412 with weird order !
179 This variable contains the \c string if that is what causes the echo
180 command to suppress newline. Otherwise it is null. Correct usage is
181 $echo $n "prompt for a question: $c".
183 castflags (d_castneg.U):
184 This variable contains a flag that precise difficulties the
185 compiler has casting odd floating values to unsigned long:
187 1 = couldn't cast < 0
188 2 = couldn't cast >= 0x80000000
189 4 = couldn't cast in argument expression list
192 This variable is used internally by Configure to determine the
193 full pathname (if any) of the cat program. After Configure runs,
194 the value is reset to a plain "cat" and is not useful.
197 This variable holds the name of a command to execute a C compiler which
198 can resolve multiple global references that happen to have the same
199 name. Usual values are 'cc' and 'gcc'.
200 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
202 cccdlflags (dlsrc.U):
203 This variable contains any special flags that might need to be
204 passed with 'cc -c' to compile modules to be used to create a shared
205 library that will be used for dynamic loading. For hpux, this
206 should be +z. It is up to the makefile to use it.
209 This variable contains any special flags that might need to be
210 passed to cc to link with a shared library for dynamic loading.
211 It is up to the makefile to use it. For sunos 4.1, it should
215 This variable contains any additional C compiler flags desired by
216 the user. It is up to the Makefile to use this.
218 ccflags_uselargefiles (uselfs.U):
219 This variable contains the compiler flags needed by large file builds
220 and added to ccflags by hints files.
223 This can set either by hints files or by Configure. If using
224 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
225 Some platforms, however, make good use of this by storing the
226 flavor of the C compiler being used here. For example if using
227 the Sun WorkShop suite, ccname will be 'workshop'.
229 ccsymbols (Cppsym.U):
230 The variable contains the symbols defined by the C compiler alone.
231 The symbols defined by cpp or by cc when it calls cpp are not in
232 this list, see cppsymbols and cppccsymbols.
233 The list is a space-separated list of symbol=value tokens.
235 ccversion (Checkcc.U):
236 This can set either by hints files or by Configure. If using
237 a (non-gcc) vendor cc, this variable may contain a version for
241 Login name of the person who ran the Configure script and answered the
242 questions. This is used to tag both config.sh and config_h.SH.
244 cf_email (cf_email.U):
245 Electronic mail address of the person who ran Configure. This can be
246 used by units that require the user's e-mail, like MailList.U.
249 Holds the output of the "date" command when the configuration file was
250 produced. This is used to tag both config.sh and config_h.SH.
252 charbits (charsize.U):
253 This variable contains the value of the CHARBITS symbol, which
254 indicates to the C program how many bits there are in a character.
256 charsize (charsize.U):
257 This variable contains the value of the CHARSIZE symbol, which
258 indicates to the C program how many bytes there are in a character.
261 This variable is defined but not used by Configure.
262 The value is the empty string and is not useful.
265 This variable is used internally by Configure to determine the
266 full pathname (if any) of the chmod program. After Configure runs,
267 the value is reset to a plain "chmod" and is not useful.
270 This variable is defined but not used by Configure.
271 The value is the empty string and is not useful.
273 clocktype (d_times.U):
274 This variable holds the type returned by times(). It can be long,
275 or clock_t on BSD sites (in which case <sys/types.h> should be
279 This variable is used internally by Configure to determine the
280 full pathname (if any) of the comm program. After Configure runs,
281 the value is reset to a plain "comm" and is not useful.
284 This variable is defined but not used by Configure.
285 The value is the empty string and is not useful.
287 config_arg0 (Options.U):
288 This variable contains the string used to invoke the Configure
289 command, as reported by the shell in the $0 variable.
291 config_argc (Options.U):
292 This variable contains the number of command-line arguments
293 passed to Configure, as reported by the shell in the $# variable.
294 The individual arguments are stored as variables config_arg1,
297 config_args (Options.U):
298 This variable contains a single string giving the command-line
299 arguments passed to Configure. Spaces within arguments,
300 quotes, and escaped characters are not correctly preserved.
301 To reconstruct the command line, you must assemble the individual
302 command line pieces, given in config_arg[0-9]*.
304 contains (contains.U):
305 This variable holds the command to do a grep with a proper return
306 status. On most sane systems it is simply "grep". On insane systems
307 it is a grep followed by a cat followed by a test. This variable
308 is primarily for the use of other Configure units.
311 This variable is used internally by Configure to determine the
312 full pathname (if any) of the cp program. After Configure runs,
313 the value is reset to a plain "cp" and is not useful.
316 This variable is defined but not used by Configure.
317 The value is the empty string and is not useful.
320 This variable is used internally by Configure to determine the
321 full pathname (if any) of the cpp program. After Configure runs,
322 the value is reset to a plain "cpp" and is not useful.
324 cpp_stuff (cpp_stuff.U):
325 This variable contains an identification of the concatenation mechanism
326 used by the C preprocessor.
328 cppccsymbols (Cppsym.U):
329 The variable contains the symbols defined by the C compiler
330 when it calls cpp. The symbols defined by the cc alone or cpp
331 alone are not in this list, see ccsymbols and cppsymbols.
332 The list is a space-separated list of symbol=value tokens.
334 cppflags (ccflags.U):
335 This variable holds the flags that will be passed to the C pre-
336 processor. It is up to the Makefile to use it.
338 cpplast (cppstdin.U):
339 This variable has the same functionality as cppminus, only it applies
340 to cpprun and not cppstdin.
342 cppminus (cppstdin.U):
343 This variable contains the second part of the string which will invoke
344 the C preprocessor on the standard input and produce to standard
345 output. This variable will have the value "-" if cppstdin needs
346 a minus to specify standard input, otherwise the value is "".
349 This variable contains the command which will invoke a C preprocessor
350 on standard input and put the output to stdout. It is guaranteed not
351 to be a wrapper and may be a null string if no preprocessor can be
352 made directly available. This preprocessor might be different from the
353 one used by the C compiler. Don't forget to append cpplast after the
354 preprocessor options.
356 cppstdin (cppstdin.U):
357 This variable contains the command which will invoke the C
358 preprocessor on standard input and put the output to stdout.
359 It is primarily used by other Configure units that ask about
360 preprocessor symbols.
362 cppsymbols (Cppsym.U):
363 The variable contains the symbols defined by the C preprocessor
364 alone. The symbols defined by cc or by cc when it calls cpp are
365 not in this list, see ccsymbols and cppccsymbols.
366 The list is a space-separated list of symbol=value tokens.
368 crypt_r_proto (d_crypt_r.U):
369 This variable encodes the prototype of crypt_r.
370 It is zero if d_crypt_r is undef, and one of the
371 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
374 cryptlib (d_crypt.U):
375 This variable holds -lcrypt or the path to a libcrypt.a archive if
376 the crypt() function is not defined in the standard C library. It is
377 up to the Makefile to use this.
380 This variable is used internally by Configure to determine the
381 full pathname (if any) of the csh program. After Configure runs,
382 the value is reset to a plain "csh" and is not useful.
384 ctermid_r_proto (d_ctermid_r.U):
385 This variable encodes the prototype of ctermid_r.
386 It is zero if d_ctermid_r is undef, and one of the
387 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
390 ctime_r_proto (d_ctime_r.U):
391 This variable encodes the prototype of ctime_r.
392 It is zero if d_ctime_r is undef, and one of the
393 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
396 d__fwalk (d__fwalk.U):
397 This variable conditionally defines HAS__FWALK if _fwalk() is
398 available to apply a function to all the file handles.
400 d_access (d_access.U):
401 This variable conditionally defines HAS_ACCESS if the access() system
402 call is available to check for access permissions using real IDs.
404 d_accessx (d_accessx.U):
405 This variable conditionally defines the HAS_ACCESSX symbol, which
406 indicates to the C program that the accessx() routine is available.
409 This variable conditionally defines the HAS_AINTL symbol, which
410 indicates to the C program that the aintl() routine is available.
411 If copysignl is also present we can emulate modfl.
414 This variable conditionally defines the HAS_ALARM symbol, which
415 indicates to the C program that the alarm() routine is available.
417 d_archlib (archlib.U):
418 This variable conditionally defines ARCHLIB to hold the pathname
419 of architecture-dependent library files for $package. If
420 $archlib is the same as $privlib, then this is set to undef.
422 d_asctime64 (d_timefuncs64.U):
423 This variable conditionally defines the HAS_ASCTIME64 symbol, which
424 indicates to the C program that the asctime64 () routine is available.
426 d_asctime_r (d_asctime_r.U):
427 This variable conditionally defines the HAS_ASCTIME_R symbol,
428 which indicates to the C program that the asctime_r()
429 routine is available.
432 This variable conditionally defines the HAS_ATOLF symbol, which
433 indicates to the C program that the atolf() routine is available.
436 This variable conditionally defines the HAS_ATOLL symbol, which
437 indicates to the C program that the atoll() routine is available.
439 d_attribute_deprecated (d_attribut.U):
440 This variable conditionally defines HASATTRIBUTE_DEPRECATED, which
441 indicates that GCC can handle the attribute for marking deprecated
444 d_attribute_format (d_attribut.U):
445 This variable conditionally defines HASATTRIBUTE_FORMAT, which
446 indicates the C compiler can check for printf-like formats.
448 d_attribute_malloc (d_attribut.U):
449 This variable conditionally defines HASATTRIBUTE_MALLOC, which
450 indicates the C compiler can understand functions as having
451 malloc-like semantics.
453 d_attribute_nonnull (d_attribut.U):
454 This variable conditionally defines HASATTRIBUTE_NONNULL, which
455 indicates that the C compiler can know that certain arguments
456 must not be NULL, and will check accordingly at compile time.
458 d_attribute_noreturn (d_attribut.U):
459 This variable conditionally defines HASATTRIBUTE_NORETURN, which
460 indicates that the C compiler can know that certain functions
461 are guaranteed never to return.
463 d_attribute_pure (d_attribut.U):
464 This variable conditionally defines HASATTRIBUTE_PURE, which
465 indicates that the C compiler can know that certain functions
466 are "pure" functions, meaning that they have no side effects, and
467 only rely on function input and/or global data for their results.
469 d_attribute_unused (d_attribut.U):
470 This variable conditionally defines HASATTRIBUTE_UNUSED, which
471 indicates that the C compiler can know that certain variables
472 and arguments may not always be used, and to not throw warnings
473 if they don't get used.
475 d_attribute_warn_unused_result (d_attribut.U):
476 This variable conditionally defines
477 HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
478 compiler can know that certain functions have a return values
479 that must not be ignored, such as malloc() or open().
482 This variable conditionally defines the HAS_BCMP symbol if
483 the bcmp() routine is available to compare strings.
486 This variable conditionally defines the HAS_BCOPY symbol if
487 the bcopy() routine is available to copy strings.
490 This symbol conditionally defines the symbol BSD when running on a
493 d_bsdgetpgrp (d_getpgrp.U):
494 This variable conditionally defines USE_BSD_GETPGRP if
495 getpgrp needs one arguments whereas USG one needs none.
497 d_bsdsetpgrp (d_setpgrp.U):
498 This variable conditionally defines USE_BSD_SETPGRP if
499 setpgrp needs two arguments whereas USG one needs none.
500 See also d_setpgid for a POSIX interface.
502 d_builtin_choose_expr (d_builtin.U):
503 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
504 indicates that the compiler supports __builtin_choose_expr(x,y,z).
505 This built-in function is analogous to the "x?y:z" operator in C,
506 except that the expression returned has its type unaltered by
507 promotion rules. Also, the built-in function does not evaluate
508 the expression that was not chosen.
510 d_builtin_expect (d_builtin.U):
511 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
512 that the compiler supports __builtin_expect(exp,c). You may use
513 __builtin_expect to provide the compiler with branch prediction
517 This variable conditionally defines the HAS_BZERO symbol if
518 the bzero() routine is available to set memory to 0.
520 d_c99_variadic_macros (d_c99_variadic.U):
521 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
522 symbol, which indicates to the C program that C99 variadic macros
525 d_casti32 (d_casti32.U):
526 This variable conditionally defines CASTI32, which indicates
527 whether the C compiler can cast large floats to 32-bit ints.
529 d_castneg (d_castneg.U):
530 This variable conditionally defines CASTNEG, which indicates
531 whether the C compiler can cast negative float to unsigned.
533 d_charvspr (d_vprintf.U):
534 This variable conditionally defines CHARVSPRINTF if this system
535 has vsprintf returning type (char*). The trend seems to be to
536 declare it as "int vsprintf()".
539 This variable conditionally defines the HAS_CHOWN symbol, which
540 indicates to the C program that the chown() routine is available.
542 d_chroot (d_chroot.U):
543 This variable conditionally defines the HAS_CHROOT symbol, which
544 indicates to the C program that the chroot() routine is available.
546 d_chsize (d_chsize.U):
547 This variable conditionally defines the CHSIZE symbol, which
548 indicates to the C program that the chsize() routine is available
549 to truncate files. You might need a -lx to get this routine.
552 This variable conditionally defines the HAS_CLASS symbol, which
553 indicates to the C program that the class() routine is available.
555 d_clearenv (d_clearenv.U):
556 This variable conditionally defines the HAS_CLEARENV symbol, which
557 indicates to the C program that the clearenv () routine is available.
559 d_closedir (d_closedir.U):
560 This variable conditionally defines HAS_CLOSEDIR if closedir() is
563 d_cmsghdr_s (d_cmsghdr_s.U):
564 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
565 which indicates that the struct cmsghdr is supported.
568 This variable conditionally defines the HASCONST symbol, which
569 indicates to the C program that this C compiler knows about the
572 d_copysignl (d_copysignl.U):
573 This variable conditionally defines the HAS_COPYSIGNL symbol, which
574 indicates to the C program that the copysignl() routine is available.
575 If aintl is also present we can emulate modfl.
577 d_cplusplus (d_cplusplus.U):
578 This variable conditionally defines the USE_CPLUSPLUS symbol, which
579 indicates that a C++ compiler was used to compiled Perl and will be
580 used to compile extensions.
583 This variable conditionally defines the CRYPT symbol, which
584 indicates to the C program that the crypt() routine is available
585 to encrypt passwords and the like.
587 d_crypt_r (d_crypt_r.U):
588 This variable conditionally defines the HAS_CRYPT_R symbol,
589 which indicates to the C program that the crypt_r()
590 routine is available.
593 This variable conditionally defines the CSH symbol, which
594 indicates to the C program that the C-shell exists.
596 d_ctermid (d_ctermid.U):
597 This variable conditionally defines CTERMID if ctermid() is
598 available to generate filename for terminal.
600 d_ctermid_r (d_ctermid_r.U):
601 This variable conditionally defines the HAS_CTERMID_R symbol,
602 which indicates to the C program that the ctermid_r()
603 routine is available.
605 d_ctime64 (d_timefuncs64.U):
606 This variable conditionally defines the HAS_CTIME64 symbol, which
607 indicates to the C program that the ctime64 () routine is available.
609 d_ctime_r (d_ctime_r.U):
610 This variable conditionally defines the HAS_CTIME_R symbol,
611 which indicates to the C program that the ctime_r()
612 routine is available.
614 d_cuserid (d_cuserid.U):
615 This variable conditionally defines the HAS_CUSERID symbol, which
616 indicates to the C program that the cuserid() routine is available
617 to get character login names.
619 d_dbl_dig (d_dbl_dig.U):
620 This variable conditionally defines d_dbl_dig if this system's
621 header files provide DBL_DIG, which is the number of significant
622 digits in a double precision number.
624 d_dbminitproto (d_dbminitproto.U):
625 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
626 which indicates to the C program that the system provides
627 a prototype for the dbminit() function. Otherwise, it is
628 up to the program to supply one.
630 d_difftime (d_difftime.U):
631 This variable conditionally defines the HAS_DIFFTIME symbol, which
632 indicates to the C program that the difftime() routine is available.
634 d_difftime64 (d_timefuncs64.U):
635 This variable conditionally defines the HAS_DIFFTIME64 symbol, which
636 indicates to the C program that the difftime64 () routine is available.
638 d_dir_dd_fd (d_dir_dd_fd.U):
639 This variable conditionally defines the HAS_DIR_DD_FD symbol, which
640 indicates that the DIR directory stream type contains a member
641 variable called dd_fd.
644 This variable conditionally defines the HAS_DIRFD constant,
645 which indicates to the C program that dirfd() is available
646 to return the file descriptor of a directory stream.
648 d_dirnamlen (i_dirent.U):
649 This variable conditionally defines DIRNAMLEN, which indicates
650 to the C program that the length of directory entry names is
651 provided by a d_namelen field.
653 d_dlerror (d_dlerror.U):
654 This variable conditionally defines the HAS_DLERROR symbol, which
655 indicates to the C program that the dlerror() routine is available.
657 d_dlopen (d_dlopen.U):
658 This variable conditionally defines the HAS_DLOPEN symbol, which
659 indicates to the C program that the dlopen() routine is available.
661 d_dlsymun (d_dlsymun.U):
662 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
663 indicates that we need to prepend an underscore to the symbol
664 name before calling dlsym().
666 d_dosuid (d_dosuid.U):
667 This variable conditionally defines the symbol DOSUID, which
668 tells the C program that it should insert setuid emulation code
669 on hosts which have setuid #! scripts disabled.
671 d_drand48_r (d_drand48_r.U):
672 This variable conditionally defines the HAS_DRAND48_R symbol,
673 which indicates to the C program that the drand48_r()
674 routine is available.
676 d_drand48proto (d_drand48proto.U):
677 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
678 which indicates to the C program that the system provides
679 a prototype for the drand48() function. Otherwise, it is
680 up to the program to supply one.
683 This variable conditionally defines HAS_DUP2 if dup2() is
684 available to duplicate file descriptors.
686 d_eaccess (d_eaccess.U):
687 This variable conditionally defines the HAS_EACCESS symbol, which
688 indicates to the C program that the eaccess() routine is available.
690 d_endgrent (d_endgrent.U):
691 This variable conditionally defines the HAS_ENDGRENT symbol, which
692 indicates to the C program that the endgrent() routine is available
693 for sequential access of the group database.
695 d_endgrent_r (d_endgrent_r.U):
696 This variable conditionally defines the HAS_ENDGRENT_R symbol,
697 which indicates to the C program that the endgrent_r()
698 routine is available.
700 d_endhent (d_endhent.U):
701 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
702 available to close whatever was being used for host queries.
704 d_endhostent_r (d_endhostent_r.U):
705 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
706 which indicates to the C program that the endhostent_r()
707 routine is available.
709 d_endnent (d_endnent.U):
710 This variable conditionally defines HAS_ENDNETENT if endnetent() is
711 available to close whatever was being used for network queries.
713 d_endnetent_r (d_endnetent_r.U):
714 This variable conditionally defines the HAS_ENDNETENT_R symbol,
715 which indicates to the C program that the endnetent_r()
716 routine is available.
718 d_endpent (d_endpent.U):
719 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
720 available to close whatever was being used for protocol queries.
722 d_endprotoent_r (d_endprotoent_r.U):
723 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
724 which indicates to the C program that the endprotoent_r()
725 routine is available.
727 d_endpwent (d_endpwent.U):
728 This variable conditionally defines the HAS_ENDPWENT symbol, which
729 indicates to the C program that the endpwent() routine is available
730 for sequential access of the passwd database.
732 d_endpwent_r (d_endpwent_r.U):
733 This variable conditionally defines the HAS_ENDPWENT_R symbol,
734 which indicates to the C program that the endpwent_r()
735 routine is available.
737 d_endsent (d_endsent.U):
738 This variable conditionally defines HAS_ENDSERVENT if endservent() is
739 available to close whatever was being used for service queries.
741 d_endservent_r (d_endservent_r.U):
742 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
743 which indicates to the C program that the endservent_r()
744 routine is available.
746 d_eofnblk (nblock_io.U):
747 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
748 when reading from a non-blocking I/O source.
751 This variable conditionally defines the symbols EUNICE and VAX, which
752 alerts the C program that it must deal with idiosyncrasies of VMS.
754 d_faststdio (d_faststdio.U):
755 This variable conditionally defines the HAS_FAST_STDIO symbol,
756 which indicates to the C program that the "fast stdio" is available
757 to manipulate the stdio buffers directly.
759 d_fchdir (d_fchdir.U):
760 This variable conditionally defines the HAS_FCHDIR symbol, which
761 indicates to the C program that the fchdir() routine is available.
763 d_fchmod (d_fchmod.U):
764 This variable conditionally defines the HAS_FCHMOD symbol, which
765 indicates to the C program that the fchmod() routine is available
766 to change mode of opened files.
768 d_fchown (d_fchown.U):
769 This variable conditionally defines the HAS_FCHOWN symbol, which
770 indicates to the C program that the fchown() routine is available
771 to change ownership of opened files.
774 This variable conditionally defines the HAS_FCNTL symbol, and indicates
775 whether the fcntl() function exists
777 d_fcntl_can_lock (d_fcntl_can_lock.U):
778 This variable conditionally defines the FCNTL_CAN_LOCK symbol
779 and indicates whether file locking with fcntl() works.
781 d_fd_macros (d_fd_set.U):
782 This variable contains the eventual value of the HAS_FD_MACROS symbol,
783 which indicates if your C compiler knows about the macros which
784 manipulate an fd_set.
786 d_fd_set (d_fd_set.U):
787 This variable contains the eventual value of the HAS_FD_SET symbol,
788 which indicates if your C compiler knows about the fd_set typedef.
790 d_fds_bits (d_fd_set.U):
791 This variable contains the eventual value of the HAS_FDS_BITS symbol,
792 which indicates if your fd_set typedef contains the fds_bits member.
793 If you have an fd_set typedef, but the dweebs who installed it did
794 a half-fast job and neglected to provide the macros to manipulate
795 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
797 d_fgetpos (d_fgetpos.U):
798 This variable conditionally defines HAS_FGETPOS if fgetpos() is
799 available to get the file position indicator.
801 d_finite (d_finite.U):
802 This variable conditionally defines the HAS_FINITE symbol, which
803 indicates to the C program that the finite() routine is available.
805 d_finitel (d_finitel.U):
806 This variable conditionally defines the HAS_FINITEL symbol, which
807 indicates to the C program that the finitel() routine is available.
809 d_flexfnam (d_flexfnam.U):
810 This variable conditionally defines the FLEXFILENAMES symbol, which
811 indicates that the system supports filenames longer than 14 characters.
814 This variable conditionally defines HAS_FLOCK if flock() is
815 available to do file locking.
817 d_flockproto (d_flockproto.U):
818 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
819 which indicates to the C program that the system provides
820 a prototype for the flock() function. Otherwise, it is
821 up to the program to supply one.
824 This variable conditionally defines the HAS_FORK symbol, which
825 indicates to the C program that the fork() routine is available.
827 d_fp_class (d_fp_class.U):
828 This variable conditionally defines the HAS_FP_CLASS symbol, which
829 indicates to the C program that the fp_class() routine is available.
831 d_fpathconf (d_pathconf.U):
832 This variable conditionally defines the HAS_FPATHCONF symbol, which
833 indicates to the C program that the pathconf() routine is available
834 to determine file-system related limits and options associated
835 with a given open file descriptor.
837 d_fpclass (d_fpclass.U):
838 This variable conditionally defines the HAS_FPCLASS symbol, which
839 indicates to the C program that the fpclass() routine is available.
841 d_fpclassify (d_fpclassify.U):
842 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
843 indicates to the C program that the fpclassify() routine is available.
845 d_fpclassl (d_fpclassl.U):
846 This variable conditionally defines the HAS_FPCLASSL symbol, which
847 indicates to the C program that the fpclassl() routine is available.
849 d_fpos64_t (d_fpos64_t.U):
850 This symbol will be defined if the C compiler supports fpos64_t.
852 d_frexpl (d_frexpl.U):
853 This variable conditionally defines the HAS_FREXPL symbol, which
854 indicates to the C program that the frexpl() routine is available.
856 d_fs_data_s (d_fs_data_s.U):
857 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
858 which indicates that the struct fs_data is supported.
860 d_fseeko (d_fseeko.U):
861 This variable conditionally defines the HAS_FSEEKO symbol, which
862 indicates to the C program that the fseeko() routine is available.
864 d_fsetpos (d_fsetpos.U):
865 This variable conditionally defines HAS_FSETPOS if fsetpos() is
866 available to set the file position indicator.
868 d_fstatfs (d_fstatfs.U):
869 This variable conditionally defines the HAS_FSTATFS symbol, which
870 indicates to the C program that the fstatfs() routine is available.
872 d_fstatvfs (d_statvfs.U):
873 This variable conditionally defines the HAS_FSTATVFS symbol, which
874 indicates to the C program that the fstatvfs() routine is available.
877 This variable conditionally defines the HAS_FSYNC symbol, which
878 indicates to the C program that the fsync() routine is available.
880 d_ftello (d_ftello.U):
881 This variable conditionally defines the HAS_FTELLO symbol, which
882 indicates to the C program that the ftello() routine is available.
885 This variable conditionally defines the HAS_FTIME symbol, which indicates
886 that the ftime() routine exists. The ftime() routine is basically
887 a sub-second accuracy clock.
889 d_futimes (d_futimes.U):
890 This variable conditionally defines the HAS_FUTIMES symbol, which
891 indicates to the C program that the futimes() routine is available.
893 d_Gconvert (d_gconvert.U):
894 This variable holds what Gconvert is defined as to convert
895 floating point numbers into strings. By default, Configure
896 sets this macro to use the first of gconvert, gcvt, or sprintf
897 that pass sprintf-%g-like behaviour tests. If perl is using
898 long doubles, the macro uses the first of the following
899 functions that pass Configure's tests: qgcvt, sprintf (if
900 Configure knows how to make sprintf format long doubles--see
901 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
902 The gconvert_preference and gconvert_ld_preference variables
903 can be used to alter Configure's preferences, for doubles and
904 long doubles, respectively. If present, they contain a
905 space-separated list of one or more of the above function
906 names in the order they should be tried.
908 d_Gconvert may be set to override Configure with a platform-
909 specific function. If this function expects a double, a
910 different value may need to be set by the uselongdouble.cbu
911 call-back unit so that long doubles can be formatted without
914 d_gdbm_ndbm_h_uses_prototypes (i_ndbm.U):
915 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
916 which indicates that the gdbm-ndbm.h include file uses real ANSI C
917 prototypes instead of K&R style function declarations. K&R style
918 declarations are unsupported in C++, so the include file requires
919 special handling when using a C++ compiler and this variable is
920 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
921 to get the same information for alternative ndbm.h include files.
923 d_gdbmndbm_h_uses_prototypes (i_ndbm.U):
924 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
925 which indicates that the gdbm/ndbm.h include file uses real ANSI C
926 prototypes instead of K&R style function declarations. K&R style
927 declarations are unsupported in C++, so the include file requires
928 special handling when using a C++ compiler and this variable is
929 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
930 to get the same information for alternative ndbm.h include files.
932 d_getaddrinfo (d_getaddrinfo.U):
933 This variable conditionally defines the HAS_GETADDRINFO symbol,
934 which indicates to the C program that the getaddrinfo() function
937 d_getcwd (d_getcwd.U):
938 This variable conditionally defines the HAS_GETCWD symbol, which
939 indicates to the C program that the getcwd() routine is available
940 to get the current working directory.
942 d_getespwnam (d_getespwnam.U):
943 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
944 available to retrieve enhanced (shadow) password entries by name.
946 d_getfsstat (d_getfsstat.U):
947 This variable conditionally defines the HAS_GETFSSTAT symbol, which
948 indicates to the C program that the getfsstat() routine is available.
950 d_getgrent (d_getgrent.U):
951 This variable conditionally defines the HAS_GETGRENT symbol, which
952 indicates to the C program that the getgrent() routine is available
953 for sequential access of the group database.
955 d_getgrent_r (d_getgrent_r.U):
956 This variable conditionally defines the HAS_GETGRENT_R symbol,
957 which indicates to the C program that the getgrent_r()
958 routine is available.
960 d_getgrgid_r (d_getgrgid_r.U):
961 This variable conditionally defines the HAS_GETGRGID_R symbol,
962 which indicates to the C program that the getgrgid_r()
963 routine is available.
965 d_getgrnam_r (d_getgrnam_r.U):
966 This variable conditionally defines the HAS_GETGRNAM_R symbol,
967 which indicates to the C program that the getgrnam_r()
968 routine is available.
970 d_getgrps (d_getgrps.U):
971 This variable conditionally defines the HAS_GETGROUPS symbol, which
972 indicates to the C program that the getgroups() routine is available
973 to get the list of process groups.
975 d_gethbyaddr (d_gethbyad.U):
976 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
977 indicates to the C program that the gethostbyaddr() routine is available
978 to look up hosts by their IP addresses.
980 d_gethbyname (d_gethbynm.U):
981 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
982 indicates to the C program that the gethostbyname() routine is available
983 to look up host names in some data base or other.
985 d_gethent (d_gethent.U):
986 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
987 available to look up host names in some data base or another.
989 d_gethname (d_gethname.U):
990 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
991 indicates to the C program that the gethostname() routine may be
992 used to derive the host name.
994 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
995 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
996 which indicates to the C program that the gethostbyaddr_r()
997 routine is available.
999 d_gethostbyname_r (d_gethostbyname_r.U):
1000 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
1001 which indicates to the C program that the gethostbyname_r()
1002 routine is available.
1004 d_gethostent_r (d_gethostent_r.U):
1005 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
1006 which indicates to the C program that the gethostent_r()
1007 routine is available.
1009 d_gethostprotos (d_gethostprotos.U):
1010 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
1011 which indicates to the C program that <netdb.h> supplies
1012 prototypes for the various gethost*() functions.
1013 See also netdbtype.U for probing for various netdb types.
1015 d_getitimer (d_getitimer.U):
1016 This variable conditionally defines the HAS_GETITIMER symbol, which
1017 indicates to the C program that the getitimer() routine is available.
1019 d_getlogin (d_getlogin.U):
1020 This variable conditionally defines the HAS_GETLOGIN symbol, which
1021 indicates to the C program that the getlogin() routine is available
1022 to get the login name.
1024 d_getlogin_r (d_getlogin_r.U):
1025 This variable conditionally defines the HAS_GETLOGIN_R symbol,
1026 which indicates to the C program that the getlogin_r()
1027 routine is available.
1029 d_getmnt (d_getmnt.U):
1030 This variable conditionally defines the HAS_GETMNT symbol, which
1031 indicates to the C program that the getmnt() routine is available
1032 to retrieve one or more mount info blocks by filename.
1034 d_getmntent (d_getmntent.U):
1035 This variable conditionally defines the HAS_GETMNTENT symbol, which
1036 indicates to the C program that the getmntent() routine is available
1037 to iterate through mounted files to get their mount info.
1039 d_getnameinfo (d_getnameinfo.U):
1040 This variable conditionally defines the HAS_GETNAMEINFO symbol,
1041 which indicates to the C program that the getnameinfo() function
1044 d_getnbyaddr (d_getnbyad.U):
1045 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
1046 indicates to the C program that the getnetbyaddr() routine is available
1047 to look up networks by their IP addresses.
1049 d_getnbyname (d_getnbynm.U):
1050 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
1051 indicates to the C program that the getnetbyname() routine is available
1052 to look up networks by their names.
1054 d_getnent (d_getnent.U):
1055 This variable conditionally defines HAS_GETNETENT if getnetent() is
1056 available to look up network names in some data base or another.
1058 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
1059 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
1060 which indicates to the C program that the getnetbyaddr_r()
1061 routine is available.
1063 d_getnetbyname_r (d_getnetbyname_r.U):
1064 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
1065 which indicates to the C program that the getnetbyname_r()
1066 routine is available.
1068 d_getnetent_r (d_getnetent_r.U):
1069 This variable conditionally defines the HAS_GETNETENT_R symbol,
1070 which indicates to the C program that the getnetent_r()
1071 routine is available.
1073 d_getnetprotos (d_getnetprotos.U):
1074 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1075 which indicates to the C program that <netdb.h> supplies
1076 prototypes for the various getnet*() functions.
1077 See also netdbtype.U for probing for various netdb types.
1079 d_getpagsz (d_getpagsz.U):
1080 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1081 is available to get the system page size.
1083 d_getpbyname (d_getprotby.U):
1084 This variable conditionally defines the HAS_GETPROTOBYNAME
1085 symbol, which indicates to the C program that the
1086 getprotobyname() routine is available to look up protocols
1089 d_getpbynumber (d_getprotby.U):
1090 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1091 symbol, which indicates to the C program that the
1092 getprotobynumber() routine is available to look up protocols
1095 d_getpent (d_getpent.U):
1096 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1097 available to look up protocols in some data base or another.
1099 d_getpgid (d_getpgid.U):
1100 This variable conditionally defines the HAS_GETPGID symbol, which
1101 indicates to the C program that the getpgid(pid) function
1102 is available to get the process group id.
1104 d_getpgrp (d_getpgrp.U):
1105 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1106 available to get the current process group.
1108 d_getpgrp2 (d_getpgrp2.U):
1109 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1110 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1111 is available to get the current process group.
1113 d_getppid (d_getppid.U):
1114 This variable conditionally defines the HAS_GETPPID symbol, which
1115 indicates to the C program that the getppid() routine is available
1116 to get the parent process ID.
1118 d_getprior (d_getprior.U):
1119 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1120 is available to get a process's priority.
1122 d_getprotobyname_r (d_getprotobyname_r.U):
1123 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1124 which indicates to the C program that the getprotobyname_r()
1125 routine is available.
1127 d_getprotobynumber_r (d_getprotobynumber_r.U):
1128 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1129 which indicates to the C program that the getprotobynumber_r()
1130 routine is available.
1132 d_getprotoent_r (d_getprotoent_r.U):
1133 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1134 which indicates to the C program that the getprotoent_r()
1135 routine is available.
1137 d_getprotoprotos (d_getprotoprotos.U):
1138 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1139 which indicates to the C program that <netdb.h> supplies
1140 prototypes for the various getproto*() functions.
1141 See also netdbtype.U for probing for various netdb types.
1143 d_getprpwnam (d_getprpwnam.U):
1144 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1145 available to retrieve protected (shadow) password entries by name.
1147 d_getpwent (d_getpwent.U):
1148 This variable conditionally defines the HAS_GETPWENT symbol, which
1149 indicates to the C program that the getpwent() routine is available
1150 for sequential access of the passwd database.
1152 d_getpwent_r (d_getpwent_r.U):
1153 This variable conditionally defines the HAS_GETPWENT_R symbol,
1154 which indicates to the C program that the getpwent_r()
1155 routine is available.
1157 d_getpwnam_r (d_getpwnam_r.U):
1158 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1159 which indicates to the C program that the getpwnam_r()
1160 routine is available.
1162 d_getpwuid_r (d_getpwuid_r.U):
1163 This variable conditionally defines the HAS_GETPWUID_R symbol,
1164 which indicates to the C program that the getpwuid_r()
1165 routine is available.
1167 d_getsbyname (d_getsrvby.U):
1168 This variable conditionally defines the HAS_GETSERVBYNAME
1169 symbol, which indicates to the C program that the
1170 getservbyname() routine is available to look up services
1173 d_getsbyport (d_getsrvby.U):
1174 This variable conditionally defines the HAS_GETSERVBYPORT
1175 symbol, which indicates to the C program that the
1176 getservbyport() routine is available to look up services
1179 d_getsent (d_getsent.U):
1180 This variable conditionally defines HAS_GETSERVENT if getservent() is
1181 available to look up network services in some data base or another.
1183 d_getservbyname_r (d_getservbyname_r.U):
1184 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1185 which indicates to the C program that the getservbyname_r()
1186 routine is available.
1188 d_getservbyport_r (d_getservbyport_r.U):
1189 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1190 which indicates to the C program that the getservbyport_r()
1191 routine is available.
1193 d_getservent_r (d_getservent_r.U):
1194 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1195 which indicates to the C program that the getservent_r()
1196 routine is available.
1198 d_getservprotos (d_getservprotos.U):
1199 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1200 which indicates to the C program that <netdb.h> supplies
1201 prototypes for the various getserv*() functions.
1202 See also netdbtype.U for probing for various netdb types.
1204 d_getspnam (d_getspnam.U):
1205 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1206 available to retrieve SysV shadow password entries by name.
1208 d_getspnam_r (d_getspnam_r.U):
1209 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1210 which indicates to the C program that the getspnam_r()
1211 routine is available.
1213 d_gettimeod (d_ftime.U):
1214 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1215 indicates that the gettimeofday() system call exists (to obtain a
1216 sub-second accuracy clock). You should probably include <sys/resource.h>.
1218 d_gmtime64 (d_timefuncs64.U):
1219 This variable conditionally defines the HAS_GMTIME64 symbol, which
1220 indicates to the C program that the gmtime64 () routine is available.
1222 d_gmtime_r (d_gmtime_r.U):
1223 This variable conditionally defines the HAS_GMTIME_R symbol,
1224 which indicates to the C program that the gmtime_r()
1225 routine is available.
1227 d_gnulibc (d_gnulibc.U):
1228 Defined if we're dealing with the GNU C Library.
1230 d_grpasswd (i_grp.U):
1231 This variable conditionally defines GRPASSWD, which indicates
1232 that struct group in <grp.h> contains gr_passwd.
1234 d_hasmntopt (d_hasmntopt.U):
1235 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1236 indicates to the C program that the hasmntopt() routine is available
1237 to query the mount options of file systems.
1239 d_htonl (d_htonl.U):
1240 This variable conditionally defines HAS_HTONL if htonl() and its
1241 friends are available to do network order byte swapping.
1243 d_ilogbl (d_ilogbl.U):
1244 This variable conditionally defines the HAS_ILOGBL symbol, which
1245 indicates to the C program that the ilogbl() routine is available.
1246 If scalbnl is also present we can emulate frexpl.
1248 d_inc_version_list (inc_version_list.U):
1249 This variable conditionally defines PERL_INC_VERSION_LIST.
1250 It is set to undef when PERL_INC_VERSION_LIST is empty.
1252 d_index (d_strchr.U):
1253 This variable conditionally defines HAS_INDEX if index() and
1254 rindex() are available for string searching.
1256 d_inetaton (d_inetaton.U):
1257 This variable conditionally defines the HAS_INET_ATON symbol, which
1258 indicates to the C program that the inet_aton() function is available
1259 to parse IP address "dotted-quad" strings.
1261 d_inetntop (d_inetntop.U):
1262 This variable conditionally defines the HAS_INETNTOP symbol,
1263 which indicates to the C program that the inet_ntop() function
1266 d_inetpton (d_inetpton.U):
1267 This variable conditionally defines the HAS_INETPTON symbol,
1268 which indicates to the C program that the inet_pton() function
1271 d_int64_t (d_int64_t.U):
1272 This symbol will be defined if the C compiler supports int64_t.
1274 d_ip_mreq (d_socket.U):
1275 This variable conditionally defines the HAS_IP_MREQ symbol, which
1276 indicates the availability of a struct ip_mreq.
1278 d_ip_mreq_source (d_socket.U):
1279 This variable conditionally defines the HAS_IP_MREQ_SOURCE symbol,
1280 which indicates the availability of a struct ip_mreq_source.
1282 d_ipv6_mreq (d_socket.U):
1283 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
1284 indicates the availability of a struct ipv6_mreq.
1286 d_ipv6_mreq_source (d_socket.U):
1287 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE symbol,
1288 which indicates the availability of a struct ipv6_mreq_source.
1290 d_isascii (d_isascii.U):
1291 This variable conditionally defines the HAS_ISASCII constant,
1292 which indicates to the C program that isascii() is available.
1294 d_isblank (d_isblank.U):
1295 This variable conditionally defines the HAS_ISBLANK constant,
1296 which indicates to the C program that isblank() is available.
1298 d_isfinite (d_isfinite.U):
1299 This variable conditionally defines the HAS_ISFINITE symbol, which
1300 indicates to the C program that the isfinite() routine is available.
1302 d_isinf (d_isinf.U):
1303 This variable conditionally defines the HAS_ISINF symbol, which
1304 indicates to the C program that the isinf() routine is available.
1306 d_isnan (d_isnan.U):
1307 This variable conditionally defines the HAS_ISNAN symbol, which
1308 indicates to the C program that the isnan() routine is available.
1310 d_isnanl (d_isnanl.U):
1311 This variable conditionally defines the HAS_ISNANL symbol, which
1312 indicates to the C program that the isnanl() routine is available.
1314 d_killpg (d_killpg.U):
1315 This variable conditionally defines the HAS_KILLPG symbol, which
1316 indicates to the C program that the killpg() routine is available
1317 to kill process groups.
1319 d_lchown (d_lchown.U):
1320 This variable conditionally defines the HAS_LCHOWN symbol, which
1321 indicates to the C program that the lchown() routine is available
1322 to operate on a symbolic link (instead of following the link).
1324 d_ldbl_dig (d_ldbl_dig.U):
1325 This variable conditionally defines d_ldbl_dig if this system's
1326 header files provide LDBL_DIG, which is the number of significant
1327 digits in a long double precision number.
1329 d_libm_lib_version (d_libm_lib_version.U):
1330 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1331 which indicates to the C program that math.h defines _LIB_VERSION
1332 being available in libm
1335 This variable conditionally defines HAS_LINK if link() is
1336 available to create hard links.
1338 d_localtime64 (d_timefuncs64.U):
1339 This variable conditionally defines the HAS_LOCALTIME64 symbol, which
1340 indicates to the C program that the localtime64 () routine is available.
1342 d_localtime_r (d_localtime_r.U):
1343 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1344 which indicates to the C program that the localtime_r()
1345 routine is available.
1347 d_localtime_r_needs_tzset (d_localtime_r.U):
1348 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1349 symbol, which makes us call tzset before localtime_r()
1351 d_locconv (d_locconv.U):
1352 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1353 available for numeric and monetary formatting conventions.
1355 d_lockf (d_lockf.U):
1356 This variable conditionally defines HAS_LOCKF if lockf() is
1357 available to do file locking.
1359 d_longdbl (d_longdbl.U):
1360 This variable conditionally defines HAS_LONG_DOUBLE if
1361 the long double type is supported.
1363 d_longlong (d_longlong.U):
1364 This variable conditionally defines HAS_LONG_LONG if
1365 the long long type is supported.
1367 d_lseekproto (d_lseekproto.U):
1368 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1369 which indicates to the C program that the system provides
1370 a prototype for the lseek() function. Otherwise, it is
1371 up to the program to supply one.
1373 d_lstat (d_lstat.U):
1374 This variable conditionally defines HAS_LSTAT if lstat() is
1375 available to do file stats on symbolic links.
1377 d_madvise (d_madvise.U):
1378 This variable conditionally defines HAS_MADVISE if madvise() is
1379 available to map a file into memory.
1381 d_malloc_good_size (d_malloc_size.U):
1382 This symbol, if defined, indicates that the malloc_good_size
1383 routine is available for use.
1385 d_malloc_size (d_malloc_size.U):
1386 This symbol, if defined, indicates that the malloc_size
1387 routine is available for use.
1389 d_mblen (d_mblen.U):
1390 This variable conditionally defines the HAS_MBLEN symbol, which
1391 indicates to the C program that the mblen() routine is available
1392 to find the number of bytes in a multibye character.
1394 d_mbstowcs (d_mbstowcs.U):
1395 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1396 indicates to the C program that the mbstowcs() routine is available
1397 to convert a multibyte string into a wide character string.
1399 d_mbtowc (d_mbtowc.U):
1400 This variable conditionally defines the HAS_MBTOWC symbol, which
1401 indicates to the C program that the mbtowc() routine is available
1402 to convert multibyte to a wide character.
1404 d_memchr (d_memchr.U):
1405 This variable conditionally defines the HAS_MEMCHR symbol, which
1406 indicates to the C program that the memchr() routine is available
1407 to locate characters within a C string.
1409 d_memcmp (d_memcmp.U):
1410 This variable conditionally defines the HAS_MEMCMP symbol, which
1411 indicates to the C program that the memcmp() routine is available
1412 to compare blocks of memory.
1414 d_memcpy (d_memcpy.U):
1415 This variable conditionally defines the HAS_MEMCPY symbol, which
1416 indicates to the C program that the memcpy() routine is available
1417 to copy blocks of memory.
1419 d_memmove (d_memmove.U):
1420 This variable conditionally defines the HAS_MEMMOVE symbol, which
1421 indicates to the C program that the memmove() routine is available
1422 to copy potentially overlapping blocks of memory.
1424 d_memset (d_memset.U):
1425 This variable conditionally defines the HAS_MEMSET symbol, which
1426 indicates to the C program that the memset() routine is available
1427 to set blocks of memory.
1429 d_mkdir (d_mkdir.U):
1430 This variable conditionally defines the HAS_MKDIR symbol, which
1431 indicates to the C program that the mkdir() routine is available
1432 to create directories..
1434 d_mkdtemp (d_mkdtemp.U):
1435 This variable conditionally defines the HAS_MKDTEMP symbol, which
1436 indicates to the C program that the mkdtemp() routine is available
1437 to exclusively create a uniquely named temporary directory.
1439 d_mkfifo (d_mkfifo.U):
1440 This variable conditionally defines the HAS_MKFIFO symbol, which
1441 indicates to the C program that the mkfifo() routine is available.
1443 d_mkstemp (d_mkstemp.U):
1444 This variable conditionally defines the HAS_MKSTEMP symbol, which
1445 indicates to the C program that the mkstemp() routine is available
1446 to exclusively create and open a uniquely named temporary file.
1448 d_mkstemps (d_mkstemps.U):
1449 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1450 indicates to the C program that the mkstemps() routine is available
1451 to exclusively create and open a uniquely named (with a suffix)
1454 d_mktime (d_mktime.U):
1455 This variable conditionally defines the HAS_MKTIME symbol, which
1456 indicates to the C program that the mktime() routine is available.
1458 d_mktime64 (d_timefuncs64.U):
1459 This variable conditionally defines the HAS_MKTIME64 symbol, which
1460 indicates to the C program that the mktime64 () routine is available.
1463 This variable conditionally defines HAS_MMAP if mmap() is
1464 available to map a file into memory.
1466 d_modfl (d_modfl.U):
1467 This variable conditionally defines the HAS_MODFL symbol, which
1468 indicates to the C program that the modfl() routine is available.
1470 d_modfl_pow32_bug (d_modfl.U):
1471 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1472 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1473 For example from 4294967303.150000 one would get 4294967302.000000
1474 and 1.150000. The bug has been seen in certain versions of glibc,
1475 release 2.2.2 is known to be okay.
1477 d_modflproto (d_modfl.U):
1478 This symbol, if defined, indicates that the system provides
1479 a prototype for the modfl() function. Otherwise, it is up
1480 to the program to supply one. C99 says it should be
1481 long double modfl(long double, long double *);
1483 d_mprotect (d_mprotect.U):
1484 This variable conditionally defines HAS_MPROTECT if mprotect() is
1485 available to modify the access protection of a memory mapped file.
1488 This variable conditionally defines the HAS_MSG symbol, which
1489 indicates that the entire msg*(2) library is present.
1491 d_msg_ctrunc (d_socket.U):
1492 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1493 which indicates that the MSG_CTRUNC is available. #ifdef is
1494 not enough because it may be an enum, glibc has been known to do this.
1496 d_msg_dontroute (d_socket.U):
1497 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1498 which indicates that the MSG_DONTROUTE is available. #ifdef is
1499 not enough because it may be an enum, glibc has been known to do this.
1501 d_msg_oob (d_socket.U):
1502 This variable conditionally defines the HAS_MSG_OOB symbol,
1503 which indicates that the MSG_OOB is available. #ifdef is
1504 not enough because it may be an enum, glibc has been known to do this.
1506 d_msg_peek (d_socket.U):
1507 This variable conditionally defines the HAS_MSG_PEEK symbol,
1508 which indicates that the MSG_PEEK is available. #ifdef is
1509 not enough because it may be an enum, glibc has been known to do this.
1511 d_msg_proxy (d_socket.U):
1512 This variable conditionally defines the HAS_MSG_PROXY symbol,
1513 which indicates that the MSG_PROXY is available. #ifdef is
1514 not enough because it may be an enum, glibc has been known to do this.
1516 d_msgctl (d_msgctl.U):
1517 This variable conditionally defines the HAS_MSGCTL symbol, which
1518 indicates to the C program that the msgctl() routine is available.
1520 d_msgget (d_msgget.U):
1521 This variable conditionally defines the HAS_MSGGET symbol, which
1522 indicates to the C program that the msgget() routine is available.
1524 d_msghdr_s (d_msghdr_s.U):
1525 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1526 which indicates that the struct msghdr is supported.
1528 d_msgrcv (d_msgrcv.U):
1529 This variable conditionally defines the HAS_MSGRCV symbol, which
1530 indicates to the C program that the msgrcv() routine is available.
1532 d_msgsnd (d_msgsnd.U):
1533 This variable conditionally defines the HAS_MSGSND symbol, which
1534 indicates to the C program that the msgsnd() routine is available.
1536 d_msync (d_msync.U):
1537 This variable conditionally defines HAS_MSYNC if msync() is
1538 available to synchronize a mapped file.
1540 d_munmap (d_munmap.U):
1541 This variable conditionally defines HAS_MUNMAP if munmap() is
1542 available to unmap a region mapped by mmap().
1544 d_mymalloc (mallocsrc.U):
1545 This variable conditionally defines MYMALLOC in case other parts
1546 of the source want to take special action if MYMALLOC is used.
1547 This may include different sorts of profiling or error detection.
1550 This variable conditionally defines the HAS_NDBM symbol, which
1551 indicates that both the ndbm.h include file and an appropriate ndbm
1552 library exist. Consult the different i_*ndbm variables
1553 to find out the actual include location. Sometimes, a system has the
1554 header file but not the library. This variable will only be set if
1555 the system has both.
1557 d_ndbm_h_uses_prototypes (i_ndbm.U):
1558 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1559 which indicates that the ndbm.h include file uses real ANSI C
1560 prototypes instead of K&R style function declarations. K&R style
1561 declarations are unsupported in C++, so the include file requires
1562 special handling when using a C++ compiler and this variable is
1563 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1564 to get the same information for alternative ndbm.h include files.
1567 This variable conditionally defines the HAS_NICE symbol, which
1568 indicates to the C program that the nice() routine is available.
1570 d_nl_langinfo (d_nl_langinfo.U):
1571 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1572 indicates to the C program that the nl_langinfo() routine is available.
1574 d_nv_preserves_uv (perlxv.U):
1575 This variable indicates whether a variable of type nvtype
1576 can preserve all the bits a variable of type uvtype.
1578 d_nv_zero_is_allbits_zero (perlxv.U):
1579 This variable indicates whether a variable of type nvtype
1580 stores 0.0 in memory as all bits zero.
1582 d_off64_t (d_off64_t.U):
1583 This symbol will be defined if the C compiler supports off64_t.
1585 d_old_pthread_create_joinable (d_pthrattrj.U):
1586 This variable conditionally defines pthread_create_joinable.
1587 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1589 d_oldpthreads (usethreads.U):
1590 This variable conditionally defines the OLD_PTHREADS_API symbol,
1591 and indicates that Perl should be built to use the old
1592 draft POSIX threads API. This is only potentially meaningful if
1595 d_oldsock (d_socket.U):
1596 This variable conditionally defines the OLDSOCKET symbol, which
1597 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1599 d_open3 (d_open3.U):
1600 This variable conditionally defines the HAS_OPEN3 manifest constant,
1601 which indicates to the C program that the 3 argument version of
1602 the open(2) function is available.
1604 d_pathconf (d_pathconf.U):
1605 This variable conditionally defines the HAS_PATHCONF symbol, which
1606 indicates to the C program that the pathconf() routine is available
1607 to determine file-system related limits and options associated
1608 with a given filename.
1610 d_pause (d_pause.U):
1611 This variable conditionally defines the HAS_PAUSE symbol, which
1612 indicates to the C program that the pause() routine is available
1613 to suspend a process until a signal is received.
1615 d_perl_otherlibdirs (otherlibdirs.U):
1616 This variable conditionally defines PERL_OTHERLIBDIRS, which
1617 contains a colon-separated set of paths for the perl binary to
1618 include in @INC. See also otherlibdirs.
1620 d_phostname (d_gethname.U):
1621 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1622 contains the shell command which, when fed to popen(), may be
1623 used to derive the host name.
1626 This variable conditionally defines the HAS_PIPE symbol, which
1627 indicates to the C program that the pipe() routine is available
1628 to create an inter-process channel.
1631 This variable conditionally defines the HAS_POLL symbol, which
1632 indicates to the C program that the poll() routine is available
1633 to poll active file descriptors.
1635 d_portable (d_portable.U):
1636 This variable conditionally defines the PORTABLE symbol, which
1637 indicates to the C program that it should not assume that it is
1638 running on the machine it was compiled on.
1640 d_prctl (d_prctl.U):
1641 This variable conditionally defines the HAS_PRCTL symbol, which
1642 indicates to the C program that the prctl() routine is available.
1644 d_prctl_set_name (d_prctl.U):
1645 This variable conditionally defines the HAS_PRCTL_SET_NAME symbol,
1646 which indicates to the C program that the prctl() routine supports
1647 the PR_SET_NAME option.
1649 d_PRId64 (quadfio.U):
1650 This variable conditionally defines the PERL_PRId64 symbol, which
1651 indicates that stdio has a symbol to print 64-bit decimal numbers.
1653 d_PRIeldbl (longdblfio.U):
1654 This variable conditionally defines the PERL_PRIfldbl symbol, which
1655 indicates that stdio has a symbol to print long doubles.
1657 d_PRIEUldbl (longdblfio.U):
1658 This variable conditionally defines the PERL_PRIfldbl symbol, which
1659 indicates that stdio has a symbol to print long doubles.
1660 The 'U' in the name is to separate this from d_PRIeldbl so that even
1661 case-blind systems can see the difference.
1663 d_PRIfldbl (longdblfio.U):
1664 This variable conditionally defines the PERL_PRIfldbl symbol, which
1665 indicates that stdio has a symbol to print long doubles.
1667 d_PRIFUldbl (longdblfio.U):
1668 This variable conditionally defines the PERL_PRIfldbl symbol, which
1669 indicates that stdio has a symbol to print long doubles.
1670 The 'U' in the name is to separate this from d_PRIfldbl so that even
1671 case-blind systems can see the difference.
1673 d_PRIgldbl (longdblfio.U):
1674 This variable conditionally defines the PERL_PRIfldbl symbol, which
1675 indicates that stdio has a symbol to print long doubles.
1677 d_PRIGUldbl (longdblfio.U):
1678 This variable conditionally defines the PERL_PRIfldbl symbol, which
1679 indicates that stdio has a symbol to print long doubles.
1680 The 'U' in the name is to separate this from d_PRIgldbl so that even
1681 case-blind systems can see the difference.
1683 d_PRIi64 (quadfio.U):
1684 This variable conditionally defines the PERL_PRIi64 symbol, which
1685 indicates that stdio has a symbol to print 64-bit decimal numbers.
1687 d_printf_format_null (d_attribut.U):
1688 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
1689 indicates the C compiler allows printf-like formats to be null.
1691 d_PRIo64 (quadfio.U):
1692 This variable conditionally defines the PERL_PRIo64 symbol, which
1693 indicates that stdio has a symbol to print 64-bit octal numbers.
1695 d_PRIu64 (quadfio.U):
1696 This variable conditionally defines the PERL_PRIu64 symbol, which
1697 indicates that stdio has a symbol to print 64-bit unsigned decimal
1700 d_PRIx64 (quadfio.U):
1701 This variable conditionally defines the PERL_PRIx64 symbol, which
1702 indicates that stdio has a symbol to print 64-bit hexadecimal numbers.
1704 d_PRIXU64 (quadfio.U):
1705 This variable conditionally defines the PERL_PRIXU64 symbol, which
1706 indicates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1707 The 'U' in the name is to separate this from d_PRIx64 so that even
1708 case-blind systems can see the difference.
1710 d_procselfexe (d_procselfexe.U):
1711 Defined if $procselfexe is symlink to the absolute
1712 pathname of the executing program.
1714 d_pseudofork (d_vfork.U):
1715 This variable conditionally defines the HAS_PSEUDOFORK symbol,
1716 which indicates that an emulation of the fork routine is available.
1718 d_pthread_atfork (d_pthread_atfork.U):
1719 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1720 which indicates to the C program that the pthread_atfork()
1721 routine is available.
1723 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1724 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1725 pthread_attr_setscope() is available to set the contention scope
1726 attribute of a thread attribute object.
1728 d_pthread_yield (d_pthread_y.U):
1729 This variable conditionally defines the HAS_PTHREAD_YIELD
1730 symbol if the pthread_yield routine is available to yield
1731 the execution of the current thread.
1734 This variable conditionally defines PWAGE, which indicates
1735 that struct passwd contains pw_age.
1737 d_pwchange (i_pwd.U):
1738 This variable conditionally defines PWCHANGE, which indicates
1739 that struct passwd contains pw_change.
1741 d_pwclass (i_pwd.U):
1742 This variable conditionally defines PWCLASS, which indicates
1743 that struct passwd contains pw_class.
1745 d_pwcomment (i_pwd.U):
1746 This variable conditionally defines PWCOMMENT, which indicates
1747 that struct passwd contains pw_comment.
1749 d_pwexpire (i_pwd.U):
1750 This variable conditionally defines PWEXPIRE, which indicates
1751 that struct passwd contains pw_expire.
1753 d_pwgecos (i_pwd.U):
1754 This variable conditionally defines PWGECOS, which indicates
1755 that struct passwd contains pw_gecos.
1757 d_pwpasswd (i_pwd.U):
1758 This variable conditionally defines PWPASSWD, which indicates
1759 that struct passwd contains pw_passwd.
1761 d_pwquota (i_pwd.U):
1762 This variable conditionally defines PWQUOTA, which indicates
1763 that struct passwd contains pw_quota.
1765 d_qgcvt (d_qgcvt.U):
1766 This variable conditionally defines the HAS_QGCVT symbol, which
1767 indicates to the C program that the qgcvt() routine is available.
1769 d_quad (quadtype.U):
1770 This variable, if defined, tells that there's a 64-bit integer type,
1773 d_random_r (d_random_r.U):
1774 This variable conditionally defines the HAS_RANDOM_R symbol,
1775 which indicates to the C program that the random_r()
1776 routine is available.
1778 d_readdir (d_readdir.U):
1779 This variable conditionally defines HAS_READDIR if readdir() is
1780 available to read directory entries.
1782 d_readdir64_r (d_readdir64_r.U):
1783 This variable conditionally defines the HAS_READDIR64_R symbol,
1784 which indicates to the C program that the readdir64_r()
1785 routine is available.
1787 d_readdir_r (d_readdir_r.U):
1788 This variable conditionally defines the HAS_READDIR_R symbol,
1789 which indicates to the C program that the readdir_r()
1790 routine is available.
1792 d_readlink (d_readlink.U):
1793 This variable conditionally defines the HAS_READLINK symbol, which
1794 indicates to the C program that the readlink() routine is available
1795 to read the value of a symbolic link.
1797 d_readv (d_readv.U):
1798 This variable conditionally defines the HAS_READV symbol, which
1799 indicates to the C program that the readv() routine is available.
1801 d_recvmsg (d_recvmsg.U):
1802 This variable conditionally defines the HAS_RECVMSG symbol, which
1803 indicates to the C program that the recvmsg() routine is available.
1805 d_rename (d_rename.U):
1806 This variable conditionally defines the HAS_RENAME symbol, which
1807 indicates to the C program that the rename() routine is available
1810 d_rewinddir (d_readdir.U):
1811 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1814 d_rmdir (d_rmdir.U):
1815 This variable conditionally defines HAS_RMDIR if rmdir() is
1816 available to remove directories.
1818 d_safebcpy (d_safebcpy.U):
1819 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1820 the bcopy() routine can do overlapping copies. Normally, you
1821 should probably use memmove().
1823 d_safemcpy (d_safemcpy.U):
1824 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1825 the memcpy() routine can do overlapping copies.
1826 For overlapping copies, memmove() should be used, if available.
1828 d_sanemcmp (d_sanemcmp.U):
1829 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1830 the memcpy() routine is available and can be used to compare relative
1831 magnitudes of chars with their high bits set.
1833 d_sbrkproto (d_sbrkproto.U):
1834 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1835 which indicates to the C program that the system provides
1836 a prototype for the sbrk() function. Otherwise, it is
1837 up to the program to supply one.
1839 d_scalbnl (d_scalbnl.U):
1840 This variable conditionally defines the HAS_SCALBNL symbol, which
1841 indicates to the C program that the scalbnl() routine is available.
1842 If ilogbl is also present we can emulate frexpl.
1844 d_sched_yield (d_pthread_y.U):
1845 This variable conditionally defines the HAS_SCHED_YIELD
1846 symbol if the sched_yield routine is available to yield
1847 the execution of the current thread.
1849 d_scm_rights (d_socket.U):
1850 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1851 which indicates that the SCM_RIGHTS is available. #ifdef is
1852 not enough because it may be an enum, glibc has been known to do this.
1854 d_SCNfldbl (longdblfio.U):
1855 This variable conditionally defines the PERL_PRIfldbl symbol, which
1856 indicates that stdio has a symbol to scan long doubles.
1858 d_seekdir (d_readdir.U):
1859 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1862 d_select (d_select.U):
1863 This variable conditionally defines HAS_SELECT if select() is
1864 available to select active file descriptors. A <sys/time.h>
1865 inclusion may be necessary for the timeout field.
1868 This variable conditionally defines the HAS_SEM symbol, which
1869 indicates that the entire sem*(2) library is present.
1871 d_semctl (d_semctl.U):
1872 This variable conditionally defines the HAS_SEMCTL symbol, which
1873 indicates to the C program that the semctl() routine is available.
1875 d_semctl_semid_ds (d_union_semun.U):
1876 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1877 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1879 d_semctl_semun (d_union_semun.U):
1880 This variable conditionally defines USE_SEMCTL_SEMUN, which
1881 indicates that union semun is to be used for semctl IPC_STAT.
1883 d_semget (d_semget.U):
1884 This variable conditionally defines the HAS_SEMGET symbol, which
1885 indicates to the C program that the semget() routine is available.
1887 d_semop (d_semop.U):
1888 This variable conditionally defines the HAS_SEMOP symbol, which
1889 indicates to the C program that the semop() routine is available.
1891 d_sendmsg (d_sendmsg.U):
1892 This variable conditionally defines the HAS_SENDMSG symbol, which
1893 indicates to the C program that the sendmsg() routine is available.
1895 d_setegid (d_setegid.U):
1896 This variable conditionally defines the HAS_SETEGID symbol, which
1897 indicates to the C program that the setegid() routine is available
1898 to change the effective gid of the current program.
1900 d_seteuid (d_seteuid.U):
1901 This variable conditionally defines the HAS_SETEUID symbol, which
1902 indicates to the C program that the seteuid() routine is available
1903 to change the effective uid of the current program.
1905 d_setgrent (d_setgrent.U):
1906 This variable conditionally defines the HAS_SETGRENT symbol, which
1907 indicates to the C program that the setgrent() routine is available
1908 for initializing sequential access to the group database.
1910 d_setgrent_r (d_setgrent_r.U):
1911 This variable conditionally defines the HAS_SETGRENT_R symbol,
1912 which indicates to the C program that the setgrent_r()
1913 routine is available.
1915 d_setgrps (d_setgrps.U):
1916 This variable conditionally defines the HAS_SETGROUPS symbol, which
1917 indicates to the C program that the setgroups() routine is available
1918 to set the list of process groups.
1920 d_sethent (d_sethent.U):
1921 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1924 d_sethostent_r (d_sethostent_r.U):
1925 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1926 which indicates to the C program that the sethostent_r()
1927 routine is available.
1929 d_setitimer (d_setitimer.U):
1930 This variable conditionally defines the HAS_SETITIMER symbol, which
1931 indicates to the C program that the setitimer() routine is available.
1933 d_setlinebuf (d_setlnbuf.U):
1934 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1935 indicates to the C program that the setlinebuf() routine is available
1936 to change stderr or stdout from block-buffered or unbuffered to a
1939 d_setlocale (d_setlocale.U):
1940 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1941 available to handle locale-specific ctype implementations.
1943 d_setlocale_r (d_setlocale_r.U):
1944 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1945 which indicates to the C program that the setlocale_r()
1946 routine is available.
1948 d_setnent (d_setnent.U):
1949 This variable conditionally defines HAS_SETNETENT if setnetent() is
1952 d_setnetent_r (d_setnetent_r.U):
1953 This variable conditionally defines the HAS_SETNETENT_R symbol,
1954 which indicates to the C program that the setnetent_r()
1955 routine is available.
1957 d_setpent (d_setpent.U):
1958 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1961 d_setpgid (d_setpgid.U):
1962 This variable conditionally defines the HAS_SETPGID symbol if the
1963 setpgid(pid, gpid) function is available to set process group ID.
1965 d_setpgrp (d_setpgrp.U):
1966 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1967 available to set the current process group.
1969 d_setpgrp2 (d_setpgrp2.U):
1970 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1971 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1972 is available to set the current process group.
1974 d_setprior (d_setprior.U):
1975 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1976 is available to set a process's priority.
1978 d_setproctitle (d_setproctitle.U):
1979 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1980 which indicates to the C program that the setproctitle() routine
1983 d_setprotoent_r (d_setprotoent_r.U):
1984 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1985 which indicates to the C program that the setprotoent_r()
1986 routine is available.
1988 d_setpwent (d_setpwent.U):
1989 This variable conditionally defines the HAS_SETPWENT symbol, which
1990 indicates to the C program that the setpwent() routine is available
1991 for initializing sequential access to the passwd database.
1993 d_setpwent_r (d_setpwent_r.U):
1994 This variable conditionally defines the HAS_SETPWENT_R symbol,
1995 which indicates to the C program that the setpwent_r()
1996 routine is available.
1998 d_setregid (d_setregid.U):
1999 This variable conditionally defines HAS_SETREGID if setregid() is
2000 available to change the real and effective gid of the current
2003 d_setresgid (d_setregid.U):
2004 This variable conditionally defines HAS_SETRESGID if setresgid() is
2005 available to change the real, effective and saved gid of the current
2008 d_setresuid (d_setreuid.U):
2009 This variable conditionally defines HAS_SETREUID if setresuid() is
2010 available to change the real, effective and saved uid of the current
2013 d_setreuid (d_setreuid.U):
2014 This variable conditionally defines HAS_SETREUID if setreuid() is
2015 available to change the real and effective uid of the current
2018 d_setrgid (d_setrgid.U):
2019 This variable conditionally defines the HAS_SETRGID symbol, which
2020 indicates to the C program that the setrgid() routine is available
2021 to change the real gid of the current program.
2023 d_setruid (d_setruid.U):
2024 This variable conditionally defines the HAS_SETRUID symbol, which
2025 indicates to the C program that the setruid() routine is available
2026 to change the real uid of the current program.
2028 d_setsent (d_setsent.U):
2029 This variable conditionally defines HAS_SETSERVENT if setservent() is
2032 d_setservent_r (d_setservent_r.U):
2033 This variable conditionally defines the HAS_SETSERVENT_R symbol,
2034 which indicates to the C program that the setservent_r()
2035 routine is available.
2037 d_setsid (d_setsid.U):
2038 This variable conditionally defines HAS_SETSID if setsid() is
2039 available to set the process group ID.
2041 d_setvbuf (d_setvbuf.U):
2042 This variable conditionally defines the HAS_SETVBUF symbol, which
2043 indicates to the C program that the setvbuf() routine is available
2044 to change buffering on an open stdio stream.
2047 This variable conditionally defines the USE_SFIO symbol,
2048 and indicates whether sfio is available (and should be used).
2051 This variable conditionally defines the HAS_SHM symbol, which
2052 indicates that the entire shm*(2) library is present.
2054 d_shmat (d_shmat.U):
2055 This variable conditionally defines the HAS_SHMAT symbol, which
2056 indicates to the C program that the shmat() routine is available.
2058 d_shmatprototype (d_shmat.U):
2059 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
2060 symbol, which indicates that sys/shm.h has a prototype for
2063 d_shmctl (d_shmctl.U):
2064 This variable conditionally defines the HAS_SHMCTL symbol, which
2065 indicates to the C program that the shmctl() routine is available.
2067 d_shmdt (d_shmdt.U):
2068 This variable conditionally defines the HAS_SHMDT symbol, which
2069 indicates to the C program that the shmdt() routine is available.
2071 d_shmget (d_shmget.U):
2072 This variable conditionally defines the HAS_SHMGET symbol, which
2073 indicates to the C program that the shmget() routine is available.
2075 d_sigaction (d_sigaction.U):
2076 This variable conditionally defines the HAS_SIGACTION symbol, which
2077 indicates that the Vr4 sigaction() routine is available.
2079 d_signbit (d_signbit.U):
2080 This variable conditionally defines the HAS_SIGNBIT symbol, which
2081 indicates to the C program that the signbit() routine is available
2082 and safe to use with perl's intern NV type.
2084 d_sigprocmask (d_sigprocmask.U):
2085 This variable conditionally defines HAS_SIGPROCMASK
2086 if sigprocmask() is available to examine or change the signal mask
2087 of the calling process.
2089 d_sigsetjmp (d_sigsetjmp.U):
2090 This variable conditionally defines the HAS_SIGSETJMP symbol,
2091 which indicates that the sigsetjmp() routine is available to
2092 call setjmp() and optionally save the process's signal mask.
2094 d_sin6_scope_id (d_socket.U):
2095 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol, which
2096 indicates that a struct sockaddr_in6 structure has the sin6_scope_id
2099 d_sitearch (sitearch.U):
2100 This variable conditionally defines SITEARCH to hold the pathname
2101 of architecture-dependent library files for $package. If
2102 $sitearch is the same as $archlib, then this is set to undef.
2104 d_snprintf (d_snprintf.U):
2105 This variable conditionally defines the HAS_SNPRINTF symbol, which
2106 indicates to the C program that the snprintf () library function
2109 d_sockaddr_in6 (d_socket.U):
2110 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol, which
2111 indicates the availability of a struct sockaddr_in6.
2113 d_sockaddr_sa_len (d_socket.U):
2114 This variable conditionally defines the HAS_SOCKADDR_SA_LEN symbol,
2115 which indicates that a struct sockaddr structure has the sa_len
2118 d_sockatmark (d_sockatmark.U):
2119 This variable conditionally defines the HAS_SOCKATMARK symbol, which
2120 indicates to the C program that the sockatmark() routine is available.
2122 d_sockatmarkproto (d_sockatmarkproto.U):
2123 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
2124 which indicates to the C program that the system provides
2125 a prototype for the sockatmark() function. Otherwise, it is
2126 up to the program to supply one.
2128 d_socket (d_socket.U):
2129 This variable conditionally defines HAS_SOCKET, which indicates
2130 that the BSD socket interface is supported.
2132 d_socklen_t (d_socklen_t.U):
2133 This symbol will be defined if the C compiler supports socklen_t.
2135 d_sockpair (d_socket.U):
2136 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
2137 indicates that the BSD socketpair() is supported.
2139 d_socks5_init (d_socks5_init.U):
2140 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
2141 indicates to the C program that the socks5_init() routine is available.
2143 d_sprintf_returns_strlen (d_sprintf_len.U):
2144 This variable defines whether sprintf returns the length of the string
2145 (as per the ANSI spec). Some C libraries retain compatibility with
2146 pre-ANSI C and return a pointer to the passed in buffer; for these
2147 this variable will be undef.
2149 d_sqrtl (d_sqrtl.U):
2150 This variable conditionally defines the HAS_SQRTL symbol, which
2151 indicates to the C program that the sqrtl() routine is available.
2153 d_srand48_r (d_srand48_r.U):
2154 This variable conditionally defines the HAS_SRAND48_R symbol,
2155 which indicates to the C program that the srand48_r()
2156 routine is available.
2158 d_srandom_r (d_srandom_r.U):
2159 This variable conditionally defines the HAS_SRANDOM_R symbol,
2160 which indicates to the C program that the srandom_r()
2161 routine is available.
2163 d_sresgproto (d_sresgproto.U):
2164 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
2165 which indicates to the C program that the system provides
2166 a prototype for the setresgid() function. Otherwise, it is
2167 up to the program to supply one.
2169 d_sresuproto (d_sresuproto.U):
2170 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2171 which indicates to the C program that the system provides
2172 a prototype for the setresuid() function. Otherwise, it is
2173 up to the program to supply one.
2175 d_statblks (d_statblks.U):
2176 This variable conditionally defines USE_STAT_BLOCKS
2177 if this system has a stat structure declaring
2178 st_blksize and st_blocks.
2180 d_statfs_f_flags (d_statfs_f_flags.U):
2181 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2182 symbol, which indicates to struct statfs from has f_flags member.
2183 This kind of struct statfs is coming from sys/mount.h (BSD),
2184 not from sys/statfs.h (SYSV).
2186 d_statfs_s (d_statfs_s.U):
2187 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2188 which indicates that the struct statfs is supported.
2190 d_static_inline (d_static_inline.U):
2191 This variable conditionally defines the HAS_STATIC_INLINE symbol,
2192 which indicates that the C compiler supports C99-style static
2193 inline. That is, the function can't be called from another
2196 d_statvfs (d_statvfs.U):
2197 This variable conditionally defines the HAS_STATVFS symbol, which
2198 indicates to the C program that the statvfs() routine is available.
2200 d_stdio_cnt_lval (d_stdstdio.U):
2201 This variable conditionally defines STDIO_CNT_LVALUE if the
2202 FILE_cnt macro can be used as an lvalue.
2204 d_stdio_ptr_lval (d_stdstdio.U):
2205 This variable conditionally defines STDIO_PTR_LVALUE if the
2206 FILE_ptr macro can be used as an lvalue.
2208 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2209 This symbol is defined if using the FILE_ptr macro as an lvalue
2210 to increase the pointer by n leaves File_cnt(fp) unchanged.
2212 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2213 This symbol is defined if using the FILE_ptr macro as an lvalue
2214 to increase the pointer by n has the side effect of decreasing the
2215 value of File_cnt(fp) by n.
2217 d_stdio_stream_array (stdio_streams.U):
2218 This variable tells whether there is an array holding
2221 d_stdiobase (d_stdstdio.U):
2222 This variable conditionally defines USE_STDIO_BASE if this system
2223 has a FILE structure declaring a usable _base field (or equivalent)
2226 d_stdstdio (d_stdstdio.U):
2227 This variable conditionally defines USE_STDIO_PTR if this system
2228 has a FILE structure declaring usable _ptr and _cnt fields (or
2229 equivalent) in stdio.h.
2231 d_strchr (d_strchr.U):
2232 This variable conditionally defines HAS_STRCHR if strchr() and
2233 strrchr() are available for string searching.
2235 d_strcoll (d_strcoll.U):
2236 This variable conditionally defines HAS_STRCOLL if strcoll() is
2237 available to compare strings using collating information.
2239 d_strctcpy (d_strctcpy.U):
2240 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2241 indicates to the C program that this C compiler knows how to copy
2244 d_strerrm (d_strerror.U):
2245 This variable holds what Strerrr is defined as to translate an error
2246 code condition into an error message string. It could be 'strerror'
2247 or a more complex macro emulating strrror with sys_errlist[], or the
2248 "unknown" string when both strerror and sys_errlist are missing.
2250 d_strerror (d_strerror.U):
2251 This variable conditionally defines HAS_STRERROR if strerror() is
2252 available to translate error numbers to strings.
2254 d_strerror_r (d_strerror_r.U):
2255 This variable conditionally defines the HAS_STRERROR_R symbol,
2256 which indicates to the C program that the strerror_r()
2257 routine is available.
2259 d_strftime (d_strftime.U):
2260 This variable conditionally defines the HAS_STRFTIME symbol, which
2261 indicates to the C program that the strftime() routine is available.
2263 d_strlcat (d_strlcat.U):
2264 This variable conditionally defines the HAS_STRLCAT symbol, which
2265 indicates to the C program that the strlcat () routine is available.
2267 d_strlcpy (d_strlcpy.U):
2268 This variable conditionally defines the HAS_STRLCPY symbol, which
2269 indicates to the C program that the strlcpy () routine is available.
2271 d_strtod (d_strtod.U):
2272 This variable conditionally defines the HAS_STRTOD symbol, which
2273 indicates to the C program that the strtod() routine is available
2274 to provide better numeric string conversion than atof().
2276 d_strtol (d_strtol.U):
2277 This variable conditionally defines the HAS_STRTOL symbol, which
2278 indicates to the C program that the strtol() routine is available
2279 to provide better numeric string conversion than atoi() and friends.
2281 d_strtold (d_strtold.U):
2282 This variable conditionally defines the HAS_STRTOLD symbol, which
2283 indicates to the C program that the strtold() routine is available.
2285 d_strtoll (d_strtoll.U):
2286 This variable conditionally defines the HAS_STRTOLL symbol, which
2287 indicates to the C program that the strtoll() routine is available.
2289 d_strtoq (d_strtoq.U):
2290 This variable conditionally defines the HAS_STRTOQ symbol, which
2291 indicates to the C program that the strtoq() routine is available.
2293 d_strtoul (d_strtoul.U):
2294 This variable conditionally defines the HAS_STRTOUL symbol, which
2295 indicates to the C program that the strtoul() routine is available
2296 to provide conversion of strings to unsigned long.
2298 d_strtoull (d_strtoull.U):
2299 This variable conditionally defines the HAS_STRTOULL symbol, which
2300 indicates to the C program that the strtoull() routine is available.
2302 d_strtouq (d_strtouq.U):
2303 This variable conditionally defines the HAS_STRTOUQ symbol, which
2304 indicates to the C program that the strtouq() routine is available.
2306 d_strxfrm (d_strxfrm.U):
2307 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2308 available to transform strings.
2310 d_suidsafe (d_dosuid.U):
2311 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2312 if setuid scripts can be secure. This test looks in /dev/fd/.
2314 d_symlink (d_symlink.U):
2315 This variable conditionally defines the HAS_SYMLINK symbol, which
2316 indicates to the C program that the symlink() routine is available
2317 to create symbolic links.
2319 d_syscall (d_syscall.U):
2320 This variable conditionally defines HAS_SYSCALL if syscall() is
2321 available call arbitrary system calls.
2323 d_syscallproto (d_syscallproto.U):
2324 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2325 which indicates to the C program that the system provides
2326 a prototype for the syscall() function. Otherwise, it is
2327 up to the program to supply one.
2329 d_sysconf (d_sysconf.U):
2330 This variable conditionally defines the HAS_SYSCONF symbol, which
2331 indicates to the C program that the sysconf() routine is available
2332 to determine system related limits and options.
2334 d_sysernlst (d_strerror.U):
2335 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2336 is available to translate error numbers to the symbolic name.
2338 d_syserrlst (d_strerror.U):
2339 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2340 available to translate error numbers to strings.
2342 d_system (d_system.U):
2343 This variable conditionally defines HAS_SYSTEM if system() is
2344 available to issue a shell command.
2346 d_tcgetpgrp (d_tcgtpgrp.U):
2347 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2348 indicates to the C program that the tcgetpgrp() routine is available.
2349 to get foreground process group ID.
2351 d_tcsetpgrp (d_tcstpgrp.U):
2352 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2353 indicates to the C program that the tcsetpgrp() routine is available
2354 to set foreground process group ID.
2356 d_telldir (d_readdir.U):
2357 This variable conditionally defines HAS_TELLDIR if telldir() is
2360 d_telldirproto (d_telldirproto.U):
2361 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2362 which indicates to the C program that the system provides
2363 a prototype for the telldir() function. Otherwise, it is
2364 up to the program to supply one.
2367 This variable conditionally defines the HAS_TIME symbol, which indicates
2368 that the time() routine exists. The time() routine is normally
2369 provided on UNIX systems.
2371 d_timegm (d_timegm.U):
2372 This variable conditionally defines the HAS_TIMEGM symbol, which
2373 indicates to the C program that the timegm () routine is available.
2375 d_times (d_times.U):
2376 This variable conditionally defines the HAS_TIMES symbol, which indicates
2377 that the times() routine exists. The times() routine is normally
2378 provided on UNIX systems. You may have to include <sys/times.h>.
2380 d_tm_tm_gmtoff (i_time.U):
2381 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2382 indicates to the C program that the struct tm has the tm_gmtoff field.
2384 d_tm_tm_zone (i_time.U):
2385 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2386 indicates to the C program that the struct tm has the tm_zone field.
2388 d_tmpnam_r (d_tmpnam_r.U):
2389 This variable conditionally defines the HAS_TMPNAM_R symbol,
2390 which indicates to the C program that the tmpnam_r()
2391 routine is available.
2393 d_truncate (d_truncate.U):
2394 This variable conditionally defines HAS_TRUNCATE if truncate() is
2395 available to truncate files.
2397 d_ttyname_r (d_ttyname_r.U):
2398 This variable conditionally defines the HAS_TTYNAME_R symbol,
2399 which indicates to the C program that the ttyname_r()
2400 routine is available.
2402 d_tzname (d_tzname.U):
2403 This variable conditionally defines HAS_TZNAME if tzname[] is
2404 available to access timezone names.
2406 d_u32align (d_u32align.U):
2407 This variable tells whether you must access character data
2408 through U32-aligned pointers.
2410 d_ualarm (d_ualarm.U):
2411 This variable conditionally defines the HAS_UALARM symbol, which
2412 indicates to the C program that the ualarm() routine is available.
2414 d_umask (d_umask.U):
2415 This variable conditionally defines the HAS_UMASK symbol, which
2416 indicates to the C program that the umask() routine is available.
2417 to set and get the value of the file creation mask.
2419 d_uname (d_gethname.U):
2420 This variable conditionally defines the HAS_UNAME symbol, which
2421 indicates to the C program that the uname() routine may be
2422 used to derive the host name.
2424 d_union_semun (d_union_semun.U):
2425 This variable conditionally defines HAS_UNION_SEMUN if the
2426 union semun is defined by including <sys/sem.h>.
2428 d_unordered (d_unordered.U):
2429 This variable conditionally defines the HAS_UNORDERED symbol, which
2430 indicates to the C program that the unordered() routine is available.
2432 d_unsetenv (d_unsetenv.U):
2433 This variable conditionally defines the HAS_UNSETENV symbol, which
2434 indicates to the C program that the unsetenv () routine is available.
2436 d_usleep (d_usleep.U):
2437 This variable conditionally defines HAS_USLEEP if usleep() is
2438 available to do high granularity sleeps.
2440 d_usleepproto (d_usleepproto.U):
2441 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2442 which indicates to the C program that the system provides
2443 a prototype for the usleep() function. Otherwise, it is
2444 up to the program to supply one.
2446 d_ustat (d_ustat.U):
2447 This variable conditionally defines HAS_USTAT if ustat() is
2448 available to query file system statistics by dev_t.
2450 d_vendorarch (vendorarch.U):
2451 This variable conditionally defined PERL_VENDORARCH.
2453 d_vendorbin (vendorbin.U):
2454 This variable conditionally defines PERL_VENDORBIN.
2456 d_vendorlib (vendorlib.U):
2457 This variable conditionally defines PERL_VENDORLIB.
2459 d_vendorscript (vendorscript.U):
2460 This variable conditionally defines PERL_VENDORSCRIPT.
2462 d_vfork (d_vfork.U):
2463 This variable conditionally defines the HAS_VFORK symbol, which
2464 indicates the vfork() routine is available.
2466 d_void_closedir (d_closedir.U):
2467 This variable conditionally defines VOID_CLOSEDIR if closedir()
2468 does not return a value.
2470 d_voidsig (d_voidsig.U):
2471 This variable conditionally defines VOIDSIG if this system
2472 declares "void (*signal(...))()" in signal.h. The old way was to
2473 declare it as "int (*signal(...))()".
2475 d_voidtty (i_sysioctl.U):
2476 This variable conditionally defines USE_IOCNOTTY to indicate that the
2477 ioctl() call with TIOCNOTTY should be used to void tty association.
2478 Otherwise (on USG probably), it is enough to close the standard file
2479 descriptors and do a setpgrp().
2481 d_volatile (d_volatile.U):
2482 This variable conditionally defines the HASVOLATILE symbol, which
2483 indicates to the C program that this C compiler knows about the
2484 volatile declaration.
2486 d_vprintf (d_vprintf.U):
2487 This variable conditionally defines the HAS_VPRINTF symbol, which
2488 indicates to the C program that the vprintf() routine is available
2489 to printf with a pointer to an argument list.
2491 d_vsnprintf (d_snprintf.U):
2492 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2493 indicates to the C program that the vsnprintf () library function
2496 d_wait4 (d_wait4.U):
2497 This variable conditionally defines the HAS_WAIT4 symbol, which
2498 indicates the wait4() routine is available.
2500 d_waitpid (d_waitpid.U):
2501 This variable conditionally defines HAS_WAITPID if waitpid() is
2502 available to wait for child process.
2504 d_wcstombs (d_wcstombs.U):
2505 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2506 indicates to the C program that the wcstombs() routine is available
2507 to convert wide character strings to multibyte strings.
2509 d_wctomb (d_wctomb.U):
2510 This variable conditionally defines the HAS_WCTOMB symbol, which
2511 indicates to the C program that the wctomb() routine is available
2512 to convert a wide character to a multibyte.
2514 d_writev (d_writev.U):
2515 This variable conditionally defines the HAS_WRITEV symbol, which
2516 indicates to the C program that the writev() routine is available.
2519 This variable conditionally defines the symbol XENIX, which alerts
2520 the C program that it runs under Xenix.
2523 This variable is used internally by Configure to determine the
2524 full pathname (if any) of the date program. After Configure runs,
2525 the value is reset to a plain "date" and is not useful.
2527 db_hashtype (i_db.U):
2528 This variable contains the type of the hash structure element
2529 in the <db.h> header file. In older versions of DB, it was
2530 int, while in newer ones it is u_int32_t.
2532 db_prefixtype (i_db.U):
2533 This variable contains the type of the prefix structure element
2534 in the <db.h> header file. In older versions of DB, it was
2535 int, while in newer ones it is size_t.
2537 db_version_major (i_db.U):
2538 This variable contains the major version number of
2539 Berkeley DB found in the <db.h> header file.
2541 db_version_minor (i_db.U):
2542 This variable contains the minor version number of
2543 Berkeley DB found in the <db.h> header file.
2544 For DB version 1 this is always 0.
2546 db_version_patch (i_db.U):
2547 This variable contains the patch version number of
2548 Berkeley DB found in the <db.h> header file.
2549 For DB version 1 this is always 0.
2551 defvoidused (voidflags.U):
2552 This variable contains the default value of the VOIDUSED symbol (15).
2554 direntrytype (i_dirent.U):
2555 This symbol is set to 'struct direct' or 'struct dirent' depending on
2556 whether dirent is available or not. You should use this pseudo type to
2557 portably declare your directory entries.
2560 This variable contains the extension that is to be used for the
2561 dynamically loaded modules that perl generaties.
2564 This variable contains the name of the dynamic loading file that
2565 will be used with the package.
2567 doublesize (doublesize.U):
2568 This variable contains the value of the DOUBLESIZE symbol, which
2569 indicates to the C program how many bytes there are in a double.
2571 drand01 (randfunc.U):
2572 Indicates the macro to be used to generate normalized
2573 random numbers. Uses randfunc, often divided by
2574 (double) (((unsigned long) 1 << randbits)) in order to
2575 normalize the result.
2576 In C programs, the macro 'Drand01' is mapped to drand01.
2578 drand48_r_proto (d_drand48_r.U):
2579 This variable encodes the prototype of drand48_r.
2580 It is zero if d_drand48_r is undef, and one of the
2581 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2584 dtrace (usedtrace.U):
2585 This variable holds the location of the dtrace executable.
2587 dynamic_ext (Extensions.U):
2588 This variable holds a list of XS extension files we want to
2589 link dynamically into the package. It is used by Makefile.
2591 eagain (nblock_io.U):
2592 This variable bears the symbolic errno code set by read() when no
2593 data is present on the file and non-blocking I/O was enabled (otherwise,
2594 read() blocks naturally).
2597 This variable conditionally defines EBCDIC if this
2598 system uses EBCDIC encoding. Among other things, this
2599 means that the character ranges are not contiguous.
2603 This variable is used internally by Configure to determine the
2604 full pathname (if any) of the echo program. After Configure runs,
2605 the value is reset to a plain "echo" and is not useful.
2608 This variable is used internally by Configure to determine the
2609 full pathname (if any) of the egrep program. After Configure runs,
2610 the value is reset to a plain "egrep" and is not useful.
2613 This variable is defined but not used by Configure.
2614 The value is the empty string and is not useful.
2616 endgrent_r_proto (d_endgrent_r.U):
2617 This variable encodes the prototype of endgrent_r.
2618 It is zero if d_endgrent_r is undef, and one of the
2619 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2622 endhostent_r_proto (d_endhostent_r.U):
2623 This variable encodes the prototype of endhostent_r.
2624 It is zero if d_endhostent_r is undef, and one of the
2625 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2628 endnetent_r_proto (d_endnetent_r.U):
2629 This variable encodes the prototype of endnetent_r.
2630 It is zero if d_endnetent_r is undef, and one of the
2631 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2634 endprotoent_r_proto (d_endprotoent_r.U):
2635 This variable encodes the prototype of endprotoent_r.
2636 It is zero if d_endprotoent_r is undef, and one of the
2637 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2640 endpwent_r_proto (d_endpwent_r.U):
2641 This variable encodes the prototype of endpwent_r.
2642 It is zero if d_endpwent_r is undef, and one of the
2643 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2646 endservent_r_proto (d_endservent_r.U):
2647 This variable encodes the prototype of endservent_r.
2648 It is zero if d_endservent_r is undef, and one of the
2649 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2653 When running under Eunice this variable contains a command which will
2654 convert a shell script to the proper form of text file for it to be
2655 executable by the shell. On other systems it is a no-op.
2658 This is an old synonym for _exe.
2661 This variable is used internally by Configure to determine the
2662 full pathname (if any) of the expr program. After Configure runs,
2663 the value is reset to a plain "expr" and is not useful.
2665 extensions (Extensions.U):
2666 This variable holds a list of all extension files (both XS and
2667 non-xs linked into the package. It is propagated to Config.pm
2668 and is typically used to test whether a particular extension
2672 ANSI C requires 'extern' where C++ requires 'extern "C"'. This
2673 variable can be used in Configure to do the right thing.
2676 This variable holds a list of extra modules to install.
2678 fflushall (fflushall.U):
2679 This symbol, if defined, tells that to flush
2680 all pending stdio output one must loop through all
2681 the stdio file handles stored in an array and fflush them.
2682 Note that if fflushNULL is defined, fflushall will not
2683 even be probed for and will be left undefined.
2685 fflushNULL (fflushall.U):
2686 This symbol, if defined, tells that fflush(NULL) does flush
2687 all pending stdio output.
2690 This variable is defined but not used by Configure.
2691 The value is the empty string and is not useful.
2693 firstmakefile (Unix.U):
2694 This variable defines the first file searched by make. On unix,
2695 it is makefile (then Makefile). On case-insensitive systems,
2696 it might be something else. This is only used to deal with
2697 convoluted make depend tricks.
2700 This variable is defined but not used by Configure.
2701 The value is the empty string and is not useful.
2703 fpossize (fpossize.U):
2704 This variable contains the size of a fpostype in bytes.
2706 fpostype (fpostype.U):
2707 This variable defines Fpos_t to be something like fpos_t, long,
2708 uint, or whatever type is used to declare file positions in libc.
2710 freetype (mallocsrc.U):
2711 This variable contains the return type of free(). It is usually
2712 void, but occasionally int.
2715 This variable contains the command used by Configure
2716 to copy files from the target host. Useful and available
2717 only during Perl build.
2718 The string ':' if not cross-compiling.
2721 This variable contains the full pathname to 'ar', whether or
2722 not the user has specified 'portability'. This is only used
2726 This variable contains the full pathname to 'csh', whether or
2727 not the user has specified 'portability'. This is only used
2728 in the compiled C program, and we assume that all systems which
2729 can share this executable will have the same full pathname to
2732 full_sed (Loc_sed.U):
2733 This variable contains the full pathname to 'sed', whether or
2734 not the user has specified 'portability'. This is only used
2735 in the compiled C program, and we assume that all systems which
2736 can share this executable will have the same full pathname to
2739 gccansipedantic (gccvers.U):
2740 If GNU cc (gcc) is used, this variable will enable (if set) the
2741 -ansi and -pedantic ccflags for building core files (through
2742 cflags script). (See Porting/pumpkin.pod for full description).
2744 gccosandvers (gccvers.U):
2745 If GNU cc (gcc) is used, this variable holds the operating system
2746 and version used to compile gcc. It is set to '' if not gcc,
2747 or if nothing useful can be parsed as the os version.
2749 gccversion (gccvers.U):
2750 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2751 indicate whether the compiler is version 1 or 2. This is used in
2752 setting some of the default cflags. It is set to '' if not gcc.
2754 getgrent_r_proto (d_getgrent_r.U):
2755 This variable encodes the prototype of getgrent_r.
2756 It is zero if d_getgrent_r is undef, and one of the
2757 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2760 getgrgid_r_proto (d_getgrgid_r.U):
2761 This variable encodes the prototype of getgrgid_r.
2762 It is zero if d_getgrgid_r is undef, and one of the
2763 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2766 getgrnam_r_proto (d_getgrnam_r.U):
2767 This variable encodes the prototype of getgrnam_r.
2768 It is zero if d_getgrnam_r is undef, and one of the
2769 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2772 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2773 This variable encodes the prototype of gethostbyaddr_r.
2774 It is zero if d_gethostbyaddr_r is undef, and one of the
2775 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2778 gethostbyname_r_proto (d_gethostbyname_r.U):
2779 This variable encodes the prototype of gethostbyname_r.
2780 It is zero if d_gethostbyname_r is undef, and one of the
2781 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2784 gethostent_r_proto (d_gethostent_r.U):
2785 This variable encodes the prototype of gethostent_r.
2786 It is zero if d_gethostent_r is undef, and one of the
2787 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2790 getlogin_r_proto (d_getlogin_r.U):
2791 This variable encodes the prototype of getlogin_r.
2792 It is zero if d_getlogin_r is undef, and one of the
2793 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2796 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2797 This variable encodes the prototype of getnetbyaddr_r.
2798 It is zero if d_getnetbyaddr_r is undef, and one of the
2799 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2802 getnetbyname_r_proto (d_getnetbyname_r.U):
2803 This variable encodes the prototype of getnetbyname_r.
2804 It is zero if d_getnetbyname_r is undef, and one of the
2805 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2808 getnetent_r_proto (d_getnetent_r.U):
2809 This variable encodes the prototype of getnetent_r.
2810 It is zero if d_getnetent_r is undef, and one of the
2811 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2814 getprotobyname_r_proto (d_getprotobyname_r.U):
2815 This variable encodes the prototype of getprotobyname_r.
2816 It is zero if d_getprotobyname_r is undef, and one of the
2817 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2820 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2821 This variable encodes the prototype of getprotobynumber_r.
2822 It is zero if d_getprotobynumber_r is undef, and one of the
2823 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2826 getprotoent_r_proto (d_getprotoent_r.U):
2827 This variable encodes the prototype of getprotoent_r.
2828 It is zero if d_getprotoent_r is undef, and one of the
2829 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2832 getpwent_r_proto (d_getpwent_r.U):
2833 This variable encodes the prototype of getpwent_r.
2834 It is zero if d_getpwent_r is undef, and one of the
2835 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2838 getpwnam_r_proto (d_getpwnam_r.U):
2839 This variable encodes the prototype of getpwnam_r.
2840 It is zero if d_getpwnam_r is undef, and one of the
2841 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2844 getpwuid_r_proto (d_getpwuid_r.U):
2845 This variable encodes the prototype of getpwuid_r.
2846 It is zero if d_getpwuid_r is undef, and one of the
2847 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2850 getservbyname_r_proto (d_getservbyname_r.U):
2851 This variable encodes the prototype of getservbyname_r.
2852 It is zero if d_getservbyname_r is undef, and one of the
2853 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2856 getservbyport_r_proto (d_getservbyport_r.U):
2857 This variable encodes the prototype of getservbyport_r.
2858 It is zero if d_getservbyport_r is undef, and one of the
2859 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2862 getservent_r_proto (d_getservent_r.U):
2863 This variable encodes the prototype of getservent_r.
2864 It is zero if d_getservent_r is undef, and one of the
2865 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2868 getspnam_r_proto (d_getspnam_r.U):
2869 This variable encodes the prototype of getspnam_r.
2870 It is zero if d_getspnam_r is undef, and one of the
2871 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2875 This variable contains the format string used for printing a Gid_t.
2877 gidsign (gidsign.U):
2878 This variable contains the signedness of a gidtype.
2879 1 for unsigned, -1 for signed.
2881 gidsize (gidsize.U):
2882 This variable contains the size of a gidtype in bytes.
2884 gidtype (gidtype.U):
2885 This variable defines Gid_t to be something like gid_t, int,
2886 ushort, or whatever type is used to declare the return type
2887 of getgid(). Typically, it is the type of group ids in the kernel.
2890 This variable holds the general path (space-separated) used to
2891 find libraries. It may contain directories that do not exist on
2892 this platform, libpth is the cleaned-up version.
2895 This variable is used internally by Configure to determine the
2896 full pathname (if any) of the gmake program. After Configure runs,
2897 the value is reset to a plain "gmake" and is not useful.
2899 gmtime_r_proto (d_gmtime_r.U):
2900 This variable encodes the prototype of gmtime_r.
2901 It is zero if d_gmtime_r is undef, and one of the
2902 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2905 gnulibc_version (d_gnulibc.U):
2906 This variable contains the version number of the GNU C library.
2907 It is usually something like '2.2.5'. It is a plain '' if this
2908 is not the GNU C library, or if the version is unknown.
2911 This variable is used internally by Configure to determine the
2912 full pathname (if any) of the grep program. After Configure runs,
2913 the value is reset to a plain "grep" and is not useful.
2916 This variable contains a command that produces the text of the
2917 /etc/group file. This is normally "cat /etc/group", but can be
2918 "ypcat group" when NIS is used.
2919 On some systems, such as os390, there may be no equivalent
2920 command, in which case this variable is unset.
2922 groupstype (groupstype.U):
2923 This variable defines Groups_t to be something like gid_t, int,
2924 ushort, or whatever type is used for the second argument to
2925 getgroups() and setgroups(). Usually, this is the same as
2926 gidtype (gid_t), but sometimes it isn't.
2929 This variable is used internally by Configure to determine the
2930 full pathname (if any) of the gzip program. After Configure runs,
2931 the value is reset to a plain "gzip" and is not useful.
2933 h_fcntl (h_fcntl.U):
2934 This is variable gets set in various places to tell i_fcntl that
2935 <fcntl.h> should be included.
2937 h_sysfile (h_sysfile.U):
2938 This is variable gets set in various places to tell i_sys_file that
2939 <sys/file.h> should be included.
2942 Gives the type of hints used for previous answers. May be one of
2943 "default", "recommended" or "previous".
2946 This variable contains a command that produces the text of the
2947 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2948 "ypcat hosts" when NIS is used.
2949 On some systems, such as os390, there may be no equivalent
2950 command, in which case this variable is unset.
2952 html1dir (html1dir.U):
2953 This variable contains the name of the directory in which html
2954 source pages are to be put. This directory is for pages
2955 that describe whole programs, not libraries or modules. It
2956 is intended to correspond roughly to section 1 of the Unix
2959 html1direxp (html1dir.U):
2960 This variable is the same as the html1dir variable, but is filename
2961 expanded at configuration time, for convenient use in makefiles.
2963 html3dir (html3dir.U):
2964 This variable contains the name of the directory in which html
2965 source pages are to be put. This directory is for pages
2966 that describe libraries or modules. It is intended to
2967 correspond roughly to section 3 of the Unix manuals.
2969 html3direxp (html3dir.U):
2970 This variable is the same as the html3dir variable, but is filename
2971 expanded at configuration time, for convenient use in makefiles.
2974 This variable is the size of an I16 in bytes.
2977 This variable contains the C type used for Perl's I16.
2980 This variable is the size of an I32 in bytes.
2983 This variable contains the C type used for Perl's I32.
2986 This variable is the size of an I64 in bytes.
2989 This variable contains the C type used for Perl's I64.
2992 This variable is the size of an I8 in bytes.
2995 This variable contains the C type used for Perl's I8.
2997 i_arpainet (i_arpainet.U):
2998 This variable conditionally defines the I_ARPA_INET symbol,
2999 and indicates whether a C program should include <arpa/inet.h>.
3001 i_assert (i_assert.U):
3002 This variable conditionally defines the I_ASSERT symbol, which
3003 indicates to the C program that <assert.h> exists and could be
3006 i_bsdioctl (i_sysioctl.U):
3007 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
3008 indicates to the C program that <sys/bsdioctl.h> exists and should
3011 i_crypt (i_crypt.U):
3012 This variable conditionally defines the I_CRYPT symbol, and indicates
3013 whether a C program should include <crypt.h>.
3016 This variable conditionally defines the I_DB symbol, and indicates
3017 whether a C program may include Berkeley's DB include file <db.h>.
3020 This variable conditionally defines the I_DBM symbol, which
3021 indicates to the C program that <dbm.h> exists and should
3024 i_dirent (i_dirent.U):
3025 This variable conditionally defines I_DIRENT, which indicates
3026 to the C program that it should include <dirent.h>.
3029 This variable conditionally defines the I_DLD symbol, which
3030 indicates to the C program that <dld.h> (GNU dynamic loading)
3031 exists and should be included.
3033 i_dlfcn (i_dlfcn.U):
3034 This variable conditionally defines the I_DLFCN symbol, which
3035 indicates to the C program that <dlfcn.h> exists and should
3038 i_fcntl (i_fcntl.U):
3039 This variable controls the value of I_FCNTL (which tells
3040 the C program to include <fcntl.h>).
3042 i_float (i_float.U):
3043 This variable conditionally defines the I_FLOAT symbol, and indicates
3044 whether a C program may include <float.h> to get symbols like DBL_MAX
3045 or DBL_MIN, i.e. machine dependent floating point values.
3048 This variable conditionally defines the I_FP symbol, and indicates
3049 whether a C program should include <fp.h>.
3051 i_fp_class (i_fp_class.U):
3052 This variable conditionally defines the I_FP_CLASS symbol, and indicates
3053 whether a C program should include <fp_class.h>.
3056 This variable conditionally defines the I_GDBM symbol, which
3057 indicates to the C program that <gdbm.h> exists and should
3060 i_gdbm_ndbm (i_ndbm.U):
3061 This variable conditionally defines the I_GDBM_NDBM symbol, which
3062 indicates to the C program that <gdbm-ndbm.h> exists and should
3063 be included. This is the location of the ndbm.h compatibility file
3066 i_gdbmndbm (i_ndbm.U):
3067 This variable conditionally defines the I_GDBMNDBM symbol, which
3068 indicates to the C program that <gdbm/ndbm.h> exists and should
3069 be included. This was the location of the ndbm.h compatibility file
3073 This variable conditionally defines the I_GRP symbol, and indicates
3074 whether a C program should include <grp.h>.
3076 i_ieeefp (i_ieeefp.U):
3077 This variable conditionally defines the I_IEEEFP symbol, and indicates
3078 whether a C program should include <ieeefp.h>.
3080 i_inttypes (i_inttypes.U):
3081 This variable conditionally defines the I_INTTYPES symbol,
3082 and indicates whether a C program should include <inttypes.h>.
3084 i_langinfo (i_langinfo.U):
3085 This variable conditionally defines the I_LANGINFO symbol,
3086 and indicates whether a C program should include <langinfo.h>.
3088 i_libutil (i_libutil.U):
3089 This variable conditionally defines the I_LIBUTIL symbol, and indicates
3090 whether a C program should include <libutil.h>.
3092 i_limits (i_limits.U):
3093 This variable conditionally defines the I_LIMITS symbol, and indicates
3094 whether a C program may include <limits.h> to get symbols like WORD_BIT
3097 i_locale (i_locale.U):
3098 This variable conditionally defines the I_LOCALE symbol,
3099 and indicates whether a C program should include <locale.h>.
3101 i_machcthr (i_machcthr.U):
3102 This variable conditionally defines the I_MACH_CTHREADS symbol,
3103 and indicates whether a C program should include <mach/cthreads.h>.
3105 i_malloc (i_malloc.U):
3106 This variable conditionally defines the I_MALLOC symbol, and indicates
3107 whether a C program should include <malloc.h>.
3109 i_mallocmalloc (i_mallocmalloc.U):
3110 This variable conditionally defines the I_MALLOCMALLOC symbol,
3111 and indicates whether a C program should include <malloc/malloc.h>.
3114 This variable conditionally defines the I_MATH symbol, and indicates
3115 whether a C program may include <math.h>.
3117 i_memory (i_memory.U):
3118 This variable conditionally defines the I_MEMORY symbol, and indicates
3119 whether a C program should include <memory.h>.
3121 i_mntent (i_mntent.U):
3122 This variable conditionally defines the I_MNTENT symbol, and indicates
3123 whether a C program should include <mntent.h>.
3126 This variable conditionally defines the I_NDBM symbol, which
3127 indicates to the C program that <ndbm.h> exists and should
3130 i_netdb (i_netdb.U):
3131 This variable conditionally defines the I_NETDB symbol, and indicates
3132 whether a C program should include <netdb.h>.
3134 i_neterrno (i_neterrno.U):
3135 This variable conditionally defines the I_NET_ERRNO symbol, which
3136 indicates to the C program that <net/errno.h> exists and should
3139 i_netinettcp (i_netinettcp.U):
3140 This variable conditionally defines the I_NETINET_TCP symbol,
3141 and indicates whether a C program should include <netinet/tcp.h>.
3144 This variable conditionally defines I_NETINET_IN, which indicates
3145 to the C program that it should include <netinet/in.h>. Otherwise,
3146 you may try <sys/in.h>.
3149 This variable conditionally defines the I_POLL symbol, and indicates
3150 whether a C program should include <poll.h>.
3153 This variable conditionally defines the I_PROT symbol, and indicates
3154 whether a C program should include <prot.h>.
3156 i_pthread (i_pthread.U):
3157 This variable conditionally defines the I_PTHREAD symbol,
3158 and indicates whether a C program should include <pthread.h>.
3161 This variable conditionally defines I_PWD, which indicates
3162 to the C program that it should include <pwd.h>.
3164 i_rpcsvcdbm (i_dbm.U):
3165 This variable conditionally defines the I_RPCSVC_DBM symbol, which
3166 indicates to the C program that <rpcsvc/dbm.h> exists and should
3167 be included. Some System V systems might need this instead of <dbm.h>.
3170 This variable conditionally defines the I_SFIO symbol,
3171 and indicates whether a C program should include <sfio.h>.
3173 i_sgtty (i_termio.U):
3174 This variable conditionally defines the I_SGTTY symbol, which
3175 indicates to the C program that it should include <sgtty.h> rather
3178 i_shadow (i_shadow.U):
3179 This variable conditionally defines the I_SHADOW symbol, and indicates
3180 whether a C program should include <shadow.h>.
3182 i_socks (i_socks.U):
3183 This variable conditionally defines the I_SOCKS symbol, and indicates
3184 whether a C program should include <socks.h>.
3186 i_stdarg (i_varhdr.U):
3187 This variable conditionally defines the I_STDARG symbol, which
3188 indicates to the C program that <stdarg.h> exists and should
3191 i_stdbool (i_stdbool.U):
3192 This variable conditionally defines the I_STDBOOL symbol, which
3193 indicates to the C program that <stdbool.h> exists and should
3196 i_stddef (i_stddef.U):
3197 This variable conditionally defines the I_STDDEF symbol, which
3198 indicates to the C program that <stddef.h> exists and should
3201 i_stdlib (i_stdlib.U):
3202 This variable conditionally defines the I_STDLIB symbol, which
3203 indicates to the C program that <stdlib.h> exists and should
3206 i_string (i_string.U):
3207 This variable conditionally defines the I_STRING symbol, which
3208 indicates that <string.h> should be included rather than <strings.h>.
3210 i_sunmath (i_sunmath.U):
3211 This variable conditionally defines the I_SUNMATH symbol, and indicates
3212 whether a C program should include <sunmath.h>.
3214 i_sysaccess (i_sysaccess.U):
3215 This variable conditionally defines the I_SYS_ACCESS symbol,
3216 and indicates whether a C program should include <sys/access.h>.
3218 i_sysdir (i_sysdir.U):
3219 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3220 whether a C program should include <sys/dir.h>.
3222 i_sysfile (i_sysfile.U):
3223 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3224 whether a C program should include <sys/file.h> to get R_OK and friends.
3226 i_sysfilio (i_sysioctl.U):
3227 This variable conditionally defines the I_SYS_FILIO symbol, which
3228 indicates to the C program that <sys/filio.h> exists and should
3229 be included in preference to <sys/ioctl.h>.
3232 This variable conditionally defines I_SYS_IN, which indicates
3233 to the C program that it should include <sys/in.h> instead of
3236 i_sysioctl (i_sysioctl.U):
3237 This variable conditionally defines the I_SYS_IOCTL symbol, which
3238 indicates to the C program that <sys/ioctl.h> exists and should
3241 i_syslog (i_syslog.U):
3242 This variable conditionally defines the I_SYSLOG symbol,
3243 and indicates whether a C program should include <syslog.h>.
3245 i_sysmman (i_sysmman.U):
3246 This variable conditionally defines the I_SYS_MMAN symbol, and
3247 indicates whether a C program should include <sys/mman.h>.
3249 i_sysmode (i_sysmode.U):
3250 This variable conditionally defines the I_SYSMODE symbol,
3251 and indicates whether a C program should include <sys/mode.h>.
3253 i_sysmount (i_sysmount.U):
3254 This variable conditionally defines the I_SYSMOUNT symbol,
3255 and indicates whether a C program should include <sys/mount.h>.
3257 i_sysndir (i_sysndir.U):
3258 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3259 whether a C program should include <sys/ndir.h>.
3261 i_sysparam (i_sysparam.U):
3262 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3263 whether a C program should include <sys/param.h>.
3265 i_syspoll (i_syspoll.U):
3266 This variable conditionally defines the I_SYS_POLL symbol, which
3267 indicates to the C program that it should include <sys/poll.h>.
3269 i_sysresrc (i_sysresrc.U):
3270 This variable conditionally defines the I_SYS_RESOURCE symbol,
3271 and indicates whether a C program should include <sys/resource.h>.
3273 i_syssecrt (i_syssecrt.U):
3274 This variable conditionally defines the I_SYS_SECURITY symbol,
3275 and indicates whether a C program should include <sys/security.h>.
3277 i_sysselct (i_sysselct.U):
3278 This variable conditionally defines I_SYS_SELECT, which indicates
3279 to the C program that it should include <sys/select.h> in order to
3280 get the definition of struct timeval.
3282 i_syssockio (i_sysioctl.U):
3283 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3284 C program that socket ioctl codes may be found in <sys/sockio.h>
3285 instead of <sys/ioctl.h>.
3287 i_sysstat (i_sysstat.U):
3288 This variable conditionally defines the I_SYS_STAT symbol,
3289 and indicates whether a C program should include <sys/stat.h>.
3291 i_sysstatfs (i_sysstatfs.U):
3292 This variable conditionally defines the I_SYSSTATFS symbol,
3293 and indicates whether a C program should include <sys/statfs.h>.
3295 i_sysstatvfs (i_sysstatvfs.U):
3296 This variable conditionally defines the I_SYSSTATVFS symbol,
3297 and indicates whether a C program should include <sys/statvfs.h>.
3299 i_systime (i_time.U):
3300 This variable conditionally defines I_SYS_TIME, which indicates
3301 to the C program that it should include <sys/time.h>.
3303 i_systimek (i_time.U):
3304 This variable conditionally defines I_SYS_TIME_KERNEL, which
3305 indicates to the C program that it should include <sys/time.h>
3306 with KERNEL defined.
3308 i_systimes (i_systimes.U):
3309 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3310 whether a C program should include <sys/times.h>.
3312 i_systypes (i_systypes.U):
3313 This variable conditionally defines the I_SYS_TYPES symbol,
3314 and indicates whether a C program should include <sys/types.h>.
3316 i_sysuio (i_sysuio.U):
3317 This variable conditionally defines the I_SYSUIO symbol, and indicates
3318 whether a C program should include <sys/uio.h>.
3320 i_sysun (i_sysun.U):
3321 This variable conditionally defines I_SYS_UN, which indicates
3322 to the C program that it should include <sys/un.h> to get UNIX
3323 domain socket definitions.
3325 i_sysutsname (i_sysutsname.U):
3326 This variable conditionally defines the I_SYSUTSNAME symbol,
3327 and indicates whether a C program should include <sys/utsname.h>.
3329 i_sysvfs (i_sysvfs.U):
3330 This variable conditionally defines the I_SYSVFS symbol,
3331 and indicates whether a C program should include <sys/vfs.h>.
3333 i_syswait (i_syswait.U):
3334 This variable conditionally defines I_SYS_WAIT, which indicates
3335 to the C program that it should include <sys/wait.h>.
3337 i_termio (i_termio.U):
3338 This variable conditionally defines the I_TERMIO symbol, which
3339 indicates to the C program that it should include <termio.h> rather
3342 i_termios (i_termio.U):
3343 This variable conditionally defines the I_TERMIOS symbol, which
3344 indicates to the C program that the POSIX <termios.h> file is
3348 This variable conditionally defines I_TIME, which indicates
3349 to the C program that it should include <time.h>.
3351 i_unistd (i_unistd.U):
3352 This variable conditionally defines the I_UNISTD symbol, and indicates
3353 whether a C program should include <unistd.h>.
3355 i_ustat (i_ustat.U):
3356 This variable conditionally defines the I_USTAT symbol, and indicates
3357 whether a C program should include <ustat.h>.
3359 i_utime (i_utime.U):
3360 This variable conditionally defines the I_UTIME symbol, and indicates
3361 whether a C program should include <utime.h>.
3363 i_values (i_values.U):
3364 This variable conditionally defines the I_VALUES symbol, and indicates
3365 whether a C program may include <values.h> to get symbols like MAXLONG
3368 i_varargs (i_varhdr.U):
3369 This variable conditionally defines I_VARARGS, which indicates
3370 to the C program that it should include <varargs.h>.
3372 i_varhdr (i_varhdr.U):
3373 Contains the name of the header to be included to get va_dcl definition.
3374 Typically one of varargs.h or stdarg.h.
3376 i_vfork (i_vfork.U):
3377 This variable conditionally defines the I_VFORK symbol, and indicates
3378 whether a C program should include vfork.h.
3380 ignore_versioned_solibs (libs.U):
3381 This variable should be non-empty if non-versioned shared
3382 libraries (libfoo.so.x.y) are to be ignored (because they
3383 cannot be linked against).
3385 inc_version_list (inc_version_list.U):
3386 This variable specifies the list of subdirectories in over
3387 which perl.c:incpush() and lib/lib.pm will automatically
3388 search when adding directories to @INC. The elements in
3389 the list are separated by spaces. This is only useful
3390 if you have a perl library directory tree structured like the
3391 default one. See INSTALL for how this works. The versioned
3392 site_perl directory was introduced in 5.005, so that is the
3393 lowest possible value.
3395 This list includes architecture-dependent directories back to
3396 version $api_versionstring (e.g. 5.5.640) and
3397 architecture-independent directories all the way back to
3400 inc_version_list_init (inc_version_list.U):
3401 This variable holds the same list as inc_version_list, but
3402 each item is enclosed in double quotes and separated by commas,
3403 suitable for use in the PERL_INC_VERSION_LIST initialization.
3406 This variable must precede the normal include path to get the
3407 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3408 Value can be "" or "/bsd43" on mips.
3411 This variable is defined but not used by Configure.
3412 The value is the empty string and is not useful.
3414 initialinstalllocation (bin.U):
3415 When userelocatableinc is true, this variable holds the location
3416 that make install should copy the perl binary to, with all the
3417 run-time relocatable paths calculated from this at install time.
3418 When used, it is initialised to the original value of binexp, and
3419 then binexp is set to '.../', as the other binaries are found
3420 relative to the perl binary.
3422 installarchlib (archlib.U):
3423 This variable is really the same as archlibexp but may differ on
3424 those systems using AFS. For extra portability, only this variable
3425 should be used in makefiles.
3428 This variable is the same as binexp unless AFS is running in which case
3429 the user is explicitly prompted for it. This variable should always
3430 be used in your makefiles for maximum portability.
3432 installhtml1dir (html1dir.U):
3433 This variable is really the same as html1direxp, unless you are
3434 using a different installprefix. For extra portability, you
3435 should only use this variable within your makefiles.
3437 installhtml3dir (html3dir.U):
3438 This variable is really the same as html3direxp, unless you are
3439 using a different installprefix. For extra portability, you
3440 should only use this variable within your makefiles.
3442 installman1dir (man1dir.U):
3443 This variable is really the same as man1direxp, unless you are using
3444 AFS in which case it points to the read/write location whereas
3445 man1direxp only points to the read-only access location. For extra
3446 portability, you should only use this variable within your makefiles.
3448 installman3dir (man3dir.U):
3449 This variable is really the same as man3direxp, unless you are using
3450 AFS in which case it points to the read/write location whereas
3451 man3direxp only points to the read-only access location. For extra
3452 portability, you should only use this variable within your makefiles.
3454 installprefix (installprefix.U):
3455 This variable holds the name of the directory below which
3456 "make install" will install the package. For most users, this
3457 is the same as prefix. However, it is useful for
3458 installing the software into a different (usually temporary)
3459 location after which it can be bundled up and moved somehow
3460 to the final location specified by prefix.
3462 installprefixexp (installprefix.U):
3463 This variable holds the full absolute path of installprefix
3464 with all ~-expansion done.
3466 installprivlib (privlib.U):
3467 This variable is really the same as privlibexp but may differ on
3468 those systems using AFS. For extra portability, only this variable
3469 should be used in makefiles.
3471 installscript (scriptdir.U):
3472 This variable is usually the same as scriptdirexp, unless you are on
3473 a system running AFS, in which case they may differ slightly. You
3474 should always use this variable within your makefiles for portability.
3476 installsitearch (sitearch.U):
3477 This variable is really the same as sitearchexp but may differ on
3478 those systems using AFS. For extra portability, only this variable
3479 should be used in makefiles.
3481 installsitebin (sitebin.U):
3482 This variable is usually the same as sitebinexp, unless you are on
3483 a system running AFS, in which case they may differ slightly. You
3484 should always use this variable within your makefiles for portability.
3486 installsitehtml1dir (sitehtml1dir.U):
3487 This variable is really the same as sitehtml1direxp, unless you are using
3488 AFS in which case it points to the read/write location whereas
3489 html1direxp only points to the read-only access location. For extra
3490 portability, you should only use this variable within your makefiles.
3492 installsitehtml3dir (sitehtml3dir.U):
3493 This variable is really the same as sitehtml3direxp, unless you are using
3494 AFS in which case it points to the read/write location whereas
3495 html3direxp only points to the read-only access location. For extra
3496 portability, you should only use this variable within your makefiles.
3498 installsitelib (sitelib.U):
3499 This variable is really the same as sitelibexp but may differ on
3500 those systems using AFS. For extra portability, only this variable
3501 should be used in makefiles.
3503 installsiteman1dir (siteman1dir.U):
3504 This variable is really the same as siteman1direxp, unless you are using
3505 AFS in which case it points to the read/write location whereas
3506 man1direxp only points to the read-only access location. For extra
3507 portability, you should only use this variable within your makefiles.
3509 installsiteman3dir (siteman3dir.U):
3510 This variable is really the same as siteman3direxp, unless you are using
3511 AFS in which case it points to the read/write location whereas
3512 man3direxp only points to the read-only access location. For extra
3513 portability, you should only use this variable within your makefiles.
3515 installsitescript (sitescript.U):
3516 This variable is usually the same as sitescriptexp, unless you are on
3517 a system running AFS, in which case they may differ slightly. You
3518 should always use this variable within your makefiles for portability.
3520 installstyle (installstyle.U):
3521 This variable describes the "style" of the perl installation.
3522 This is intended to be useful for tools that need to
3523 manipulate entire perl distributions. Perl itself doesn't use
3524 this to find its libraries -- the library directories are
3525 stored directly in Config.pm. Currently, there are only two
3526 styles: "lib" and "lib/perl5". The default library locations
3527 (e.g. privlib, sitelib) are either $prefix/lib or
3528 $prefix/lib/perl5. The former is useful if $prefix is a
3529 directory dedicated to perl (e.g. /opt/perl), while the latter
3530 is useful if $prefix is shared by many packages, e.g. if
3533 Unfortunately, while this "style" variable is used to set
3534 defaults for all three directory hierarchies (core, vendor, and
3535 site), there is no guarantee that the same style is actually
3536 appropriate for all those directories. For example, $prefix
3537 might be /opt/perl, but $siteprefix might be /usr/local.
3538 (Perhaps, in retrospect, the "lib" style should never have been
3539 supported, but it did seem like a nice idea at the time.)
3541 The situation is even less clear for tools such as MakeMaker
3542 that can be used to install additional modules into
3543 non-standard places. For example, if a user intends to install
3544 a module into a private directory (perhaps by setting PREFIX on
3545 the Makefile.PL command line), then there is no reason to
3546 assume that the Configure-time $installstyle setting will be
3547 relevant for that PREFIX.
3549 This may later be extended to include other information, so
3550 be careful with pattern-matching on the results.
3552 For compatibility with perl5.005 and earlier, the default
3553 setting is based on whether or not $prefix contains the string
3556 installusrbinperl (instubperl.U):
3557 This variable tells whether Perl should be installed also as
3558 /usr/bin/perl in addition to
3561 installvendorarch (vendorarch.U):
3562 This variable is really the same as vendorarchexp but may differ on
3563 those systems using AFS. For extra portability, only this variable
3564 should be used in makefiles.
3566 installvendorbin (vendorbin.U):
3567 This variable is really the same as vendorbinexp but may differ on
3568 those systems using AFS. For extra portability, only this variable
3569 should be used in makefiles.
3571 installvendorhtml1dir (vendorhtml1dir.U):
3572 This variable is really the same as vendorhtml1direxp but may differ on
3573 those systems using AFS. For extra portability, only this variable
3574 should be used in makefiles.
3576 installvendorhtml3dir (vendorhtml3dir.U):
3577 This variable is really the same as vendorhtml3direxp but may differ on
3578 those systems using AFS. For extra portability, only this variable
3579 should be used in makefiles.
3581 installvendorlib (vendorlib.U):
3582 This variable is really the same as vendorlibexp but may differ on
3583 those systems using AFS. For extra portability, only this variable
3584 should be used in makefiles.
3586 installvendorman1dir (vendorman1dir.U):
3587 This variable is really the same as vendorman1direxp but may differ on
3588 those systems using AFS. For extra portability, only this variable
3589 should be used in makefiles.
3591 installvendorman3dir (vendorman3dir.U):
3592 This variable is really the same as vendorman3direxp but may differ on
3593 those systems using AFS. For extra portability, only this variable
3594 should be used in makefiles.
3596 installvendorscript (vendorscript.U):
3597 This variable is really the same as vendorscriptexp but may differ on
3598 those systems using AFS. For extra portability, only this variable
3599 should be used in makefiles.
3601 intsize (intsize.U):
3602 This variable contains the value of the INTSIZE symbol, which
3603 indicates to the C program how many bytes there are in an int.
3605 issymlink (issymlink.U):
3606 This variable holds the test command to test for a symbolic link
3607 (if they are supported). Typical values include 'test -h' and
3610 ivdformat (perlxvf.U):
3611 This variable contains the format string used for printing
3612 a Perl IV as a signed decimal integer.
3615 This variable is the size of an IV in bytes.
3618 This variable contains the C type used for Perl's IV.
3620 known_extensions (Extensions.U):
3621 This variable holds a list of all XS extensions included in
3625 This variable is defined but not used by Configure.
3626 The value is the empty string and is not useful.
3629 This variable indicates the program to be used to link
3630 libraries for dynamic loading. On some systems, it is 'ld'.
3631 On ELF systems, it should be $cc. Mostly, we'll try to respect
3632 the hint file setting.
3634 ld_can_script (dlsrc.U):
3635 This variable shows if the loader accepts scripts in the form of
3636 -Wl,--version-script=ld.script. This is currently only supported
3637 for GNU ld on ELF in dynamic loading builds.
3639 lddlflags (dlsrc.U):
3640 This variable contains any special flags that might need to be
3641 passed to $ld to create a shared library suitable for dynamic
3642 loading. It is up to the makefile to use it. For hpux, it
3643 should be '-b'. For sunos 4.1, it is empty.
3645 ldflags (ccflags.U):
3646 This variable contains any additional C loader flags desired by
3647 the user. It is up to the Makefile to use this.
3649 ldflags_uselargefiles (uselfs.U):
3650 This variable contains the loader flags needed by large file builds
3651 and added to ldflags by hints files.
3653 ldlibpthname (libperl.U):
3654 This variable holds the name of the shared library
3655 search path, often LD_LIBRARY_PATH. To get an empty
3656 string, the hints file must set this to 'none'.
3659 This variable is used internally by Configure to determine the
3660 full pathname (if any) of the less program. After Configure runs,
3661 the value is reset to a plain "less" and is not useful.
3664 This is an old synonym for _a.
3667 This variable contains the location of the C library.
3669 libperl (libperl.U):
3670 The perl executable is obtained by linking perlmain.c with
3671 libperl, any static extensions (usually just DynaLoader),
3672 and any other libraries needed on this system. libperl
3673 is usually libperl.a, but can also be libperl.so.xxx if
3674 the user wishes to build a perl executable with a shared
3678 This variable holds the general path (space-separated) used to find
3679 libraries. It is intended to be used by other units.
3682 This variable holds the additional libraries we want to use.
3683 It is up to the Makefile to deal with it. The list can be empty.
3686 This variable holds the directory names aka dirnames of the libraries
3687 we found and accepted, duplicates are removed.
3690 This variable holds the filenames aka basenames of the libraries
3691 we found and accepted.
3694 This variable holds the full pathnames of the libraries
3695 we found and accepted.
3698 This variable holds the directory names probed for libraries.
3700 libswanted (Myinit.U):
3701 This variable holds a list of all the libraries we want to
3702 search. The order is chosen to pick up the c library
3703 ahead of ucb or bsd libraries for SVR4.
3705 libswanted_uselargefiles (uselfs.U):
3706 This variable contains the libraries needed by large file builds
3707 and added to ldflags by hints files. It is a space separated list
3708 of the library names without the "lib" prefix or any suffix, just
3712 This variable is defined but not used by Configure.
3713 The value is the empty string and is not useful.
3716 This variable is defined but not used by Configure.
3717 The value is the empty string and is not useful.
3719 lkflags (ccflags.U):
3720 This variable contains any additional C partial linker flags desired by
3721 the user. It is up to the Makefile to use this.
3724 This variable is used internally by Configure to determine the
3725 full pathname (if any) of the ln program. After Configure runs,
3726 the value is reset to a plain "ln" and is not useful.
3729 This variable holds the name of the command to make
3730 symbolic links (if they are supported). It can be used
3731 in the Makefile. It is either 'ln -s' or 'ln'
3733 localtime_r_proto (d_localtime_r.U):
3734 This variable encodes the prototype of localtime_r.
3735 It is zero if d_localtime_r is undef, and one of the
3736 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3739 locincpth (ccflags.U):
3740 This variable contains a list of additional directories to be
3741 searched by the compiler. The appropriate '-I' directives will
3742 be added to ccflags. This is intended to simplify setting
3743 local directories from the Configure command line.
3744 It's not much, but it parallels the loclibpth stuff in libpth.U.
3746 loclibpth (libpth.U):
3747 This variable holds the paths (space-separated) used to find local
3748 libraries. It is prepended to libpth, and is intended to be easily
3749 set from the command line.
3751 longdblsize (d_longdbl.U):
3752 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3753 indicates to the C program how many bytes there are in a long double,
3754 if this system supports long doubles.
3756 longlongsize (d_longlong.U):
3757 This variable contains the value of the LONGLONGSIZE symbol, which
3758 indicates to the C program how many bytes there are in a long long,
3759 if this system supports long long.
3761 longsize (intsize.U):
3762 This variable contains the value of the LONGSIZE symbol, which
3763 indicates to the C program how many bytes there are in a long.
3766 This variable is defined but not used by Configure.
3767 The value is the empty string and is not useful.
3770 This variable is defined but not used by Configure.
3771 The value is the empty string and is not useful.
3774 This variable is used internally by Configure to determine the
3775 full pathname (if any) of the ls program. After Configure runs,
3776 the value is reset to a plain "ls" and is not useful.
3778 lseeksize (lseektype.U):
3779 This variable defines lseektype to be something like off_t, long,
3780 or whatever type is used to declare lseek offset's type in the
3781 kernel (which also appears to be lseek's return type).
3783 lseektype (lseektype.U):
3784 This variable defines lseektype to be something like off_t, long,
3785 or whatever type is used to declare lseek offset's type in the
3786 kernel (which also appears to be lseek's return type).
3789 This variable indicates that the Misc Attribute Definition code is to
3793 If the Misc Attribute Decoration is to be compiled, this variable is
3794 set to the name of the extra header files to be used, else it is ''
3797 If the Misc Attribute Decoration is to be compiled, this variable is
3798 set to the name of the extra object files to be used, else it is ''
3801 If the Misc Attribute Decoration is to be compiled, this variable is
3802 set to the name of the extra C source files to be used, else it is ''
3805 This variable is defined but not used by Configure.
3806 The value is the empty string and is not useful.
3809 This variable is defined but not used by Configure.
3810 The value is the empty string and is not useful.
3813 This variable is used internally by Configure to determine the
3814 full pathname (if any) of the make program. After Configure runs,
3815 the value is reset to a plain "make" and is not useful.
3817 make_set_make (make.U):
3818 Some versions of 'make' set the variable MAKE. Others do not.
3819 This variable contains the string to be included in Makefile.SH
3820 so that MAKE is set if needed, and not if not needed.
3821 Possible values are:
3823 make_set_make='#' # If your make program handles this for you,
3825 make_set_make="MAKE=$make" # if it doesn't.
3827 This uses a comment character so that we can distinguish a
3828 'set' value (from a previous config.sh or Configure '-D' option)
3829 from an uncomputed value.
3831 mallocobj (mallocsrc.U):
3832 This variable contains the name of the malloc.o that this package
3833 generates, if that malloc.o is preferred over the system malloc.
3834 Otherwise the value is null. This variable is intended for generating
3835 Makefiles. See mallocsrc.
3837 mallocsrc (mallocsrc.U):
3838 This variable contains the name of the malloc.c that comes with
3839 the package, if that malloc.c is preferred over the system malloc.
3840 Otherwise the value is null. This variable is intended for generating
3843 malloctype (mallocsrc.U):
3844 This variable contains the kind of ptr returned by malloc and realloc.
3846 man1dir (man1dir.U):
3847 This variable contains the name of the directory in which manual
3848 source pages are to be put. It is the responsibility of the
3849 Makefile.SH to get the value of this into the proper command.
3850 You must be prepared to do the ~name expansion yourself.
3852 man1direxp (man1dir.U):
3853 This variable is the same as the man1dir variable, but is filename
3854 expanded at configuration time, for convenient use in makefiles.
3856 man1ext (man1dir.U):
3857 This variable contains the extension that the manual page should
3858 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3861 man3dir (man3dir.U):
3862 This variable contains the name of the directory in which manual
3863 source pages are to be put. It is the responsibility of the
3864 Makefile.SH to get the value of this into the proper command.
3865 You must be prepared to do the ~name expansion yourself.
3867 man3direxp (man3dir.U):
3868 This variable is the same as the man3dir variable, but is filename
3869 expanded at configuration time, for convenient use in makefiles.
3871 man3ext (man3dir.U):
3872 This variable contains the extension that the manual page should
3873 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3876 mips_type (usrinc.U):
3877 This variable holds the environment type for the mips system.
3878 Possible values are "BSD 4.3" and "System V".
3880 mistrustnm (Csym.U):
3881 This variable can be used to establish a fallthrough for the cases
3882 where nm fails to find a symbol. If usenm is false or usenm is true
3883 and mistrustnm is false, this variable has no effect. If usenm is true
3884 and mistrustnm is "compile", a test program will be compiled to try to
3885 find any symbol that can't be located via nm lookup. If mistrustnm is
3886 "run", the test program will be run as well as being compiled.
3889 This variable is used internally by Configure to determine the
3890 full pathname (if any) of the mkdir program. After Configure runs,
3891 the value is reset to a plain "mkdir" and is not useful.
3893 mmaptype (d_mmap.U):
3894 This symbol contains the type of pointer returned by mmap()
3895 (and simultaneously the type of the first argument).
3896 It can be 'void *' or 'caddr_t'.
3898 modetype (modetype.U):
3899 This variable defines modetype to be something like mode_t,
3900 int, unsigned short, or whatever type is used to declare file
3901 modes for system calls.
3904 This variable is used internally by Configure to determine the
3905 full pathname (if any) of the more program. After Configure runs,
3906 the value is reset to a plain "more" and is not useful.
3908 multiarch (multiarch.U):
3909 This variable conditionally defines the MULTIARCH symbol
3910 which signifies the presence of multiplatform files.
3911 This is normally set by hints files.
3914 This variable is defined but not used by Configure.
3915 The value is the empty string and is not useful.
3917 myarchname (archname.U):
3918 This variable holds the architecture name computed by Configure in
3919 a previous run. It is not intended to be perused by any user and
3920 should never be set in a hint file.
3922 mydomain (myhostname.U):
3923 This variable contains the eventual value of the MYDOMAIN symbol,
3924 which is the domain of the host the program is going to run on.
3925 The domain must be appended to myhostname to form a complete host name.
3926 The dot comes with mydomain, and need not be supplied by the program.
3928 myhostname (myhostname.U):
3929 This variable contains the eventual value of the MYHOSTNAME symbol,
3930 which is the name of the host the program is going to run on.
3931 The domain is not kept with hostname, but must be gotten from mydomain.
3932 The dot comes with mydomain, and need not be supplied by the program.
3934 myuname (Oldconfig.U):
3935 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3936 pseudo variables assignments in the output are stripped, thank you. The
3937 whole thing is then lower-cased.
3940 This variable contains the '-n' flag if that is what causes the echo
3941 command to suppress newline. Otherwise it is null. Correct usage is
3942 $echo $n "prompt for a question: $c".
3944 need_va_copy (need_va_copy.U):
3945 This symbol, if defined, indicates that the system stores
3946 the variable argument list datatype, va_list, in a format
3947 that cannot be copied by simple assignment, so that some
3948 other means must be used when copying is required.
3949 As such systems vary in their provision (or non-provision)
3950 of copying mechanisms, handy.h defines a platform-
3951 independent macro, Perl_va_copy(src, dst), to do the job.
3953 netdb_hlen_type (netdbtype.U):
3954 This variable holds the type used for the 2nd argument to
3955 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3956 This is only useful if you have gethostbyaddr(), naturally.
3958 netdb_host_type (netdbtype.U):
3959 This variable holds the type used for the 1st argument to
3960 gethostbyaddr(). Usually, this is char * or void *, possibly
3961 with or without a const prefix.
3962 This is only useful if you have gethostbyaddr(), naturally.
3964 netdb_name_type (netdbtype.U):
3965 This variable holds the type used for the argument to
3966 gethostbyname(). Usually, this is char * or const char *.
3967 This is only useful if you have gethostbyname(), naturally.
3969 netdb_net_type (netdbtype.U):
3970 This variable holds the type used for the 1st argument to
3971 getnetbyaddr(). Usually, this is int or long.
3972 This is only useful if you have getnetbyaddr(), naturally.
3975 This variable is used internally by Configure to determine the
3976 full pathname (if any) of the nm program. After Configure runs,
3977 the value is reset to a plain "nm" and is not useful.
3980 This variable holds the options that may be necessary for nm.
3982 nm_so_opt (usenm.U):
3983 This variable holds the options that may be necessary for nm
3984 to work on a shared library but that can not be used on an
3985 archive library. Currently, this is only used by Linux, where
3986 nm --dynamic is *required* to get symbols from an ELF library which
3987 has been stripped, but nm --dynamic is *fatal* on an archive library.
3988 Maybe Linux should just always set usenm=false.
3990 nonxs_ext (Extensions.U):
3991 This variable holds a list of all non-xs extensions included
3992 in the package. All of them will be built.
3995 This variable is used internally by Configure to determine the
3996 full pathname (if any) of the nroff program. After Configure runs,
3997 the value is reset to a plain "nroff" and is not useful.
3999 nv_overflows_integers_at (perlxv.U):
4000 This variable gives the largest integer value that NVs can hold
4001 as a constant floating point expression.
4002 If it could not be determined, it holds the value 0.
4004 nv_preserves_uv_bits (perlxv.U):
4005 This variable indicates how many of bits type uvtype
4006 a variable nvtype can preserve.
4008 nveformat (perlxvf.U):
4009 This variable contains the format string used for printing
4010 a Perl NV using %e-ish floating point format.
4012 nvEUformat (perlxvf.U):
4013 This variable contains the format string used for printing
4014 a Perl NV using %E-ish floating point format.
4016 nvfformat (perlxvf.U):
4017 This variable confains the format string used for printing
4018 a Perl NV using %f-ish floating point format.
4020 nvFUformat (perlxvf.U):
4021 This variable confains the format string used for printing
4022 a Perl NV using %F-ish floating point format.
4024 nvgformat (perlxvf.U):
4025 This variable contains the format string used for printing
4026 a Perl NV using %g-ish floating point format.
4028 nvGUformat (perlxvf.U):
4029 This variable contains the format string used for printing
4030 a Perl NV using %G-ish floating point format.
4033 This variable is the size of an NV in bytes.
4036 This variable contains the C type used for Perl's NV.
4038 o_nonblock (nblock_io.U):
4039 This variable bears the symbol value to be used during open() or fcntl()
4040 to turn on non-blocking I/O for a file descriptor. If you wish to switch
4041 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
4042 but that is only supported by some devices.
4045 This is an old synonym for _o.
4047 old_pthread_create_joinable (d_pthrattrj.U):
4048 This variable defines the constant to use for creating joinable
4049 (aka undetached) pthreads. Unused if pthread.h defines
4050 PTHREAD_CREATE_JOINABLE. If used, possible values are
4051 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
4053 optimize (ccflags.U):
4054 This variable contains any optimizer/debugger flag that should be used.
4055 It is up to the Makefile to use it.
4057 orderlib (orderlib.U):
4058 This variable is "true" if the components of libraries must be ordered
4059 (with `lorder $* | tsort`) before placing them in an archive. Set to
4060 "false" if ranlib or ar can generate random libraries.
4062 osname (Oldconfig.U):
4063 This variable contains the operating system name (e.g. sunos,
4064 solaris, hpux, etc.). It can be useful later on for setting
4065 defaults. Any spaces are replaced with underscores. It is set
4066 to a null string if we can't figure it out.
4068 osvers (Oldconfig.U):
4069 This variable contains the operating system version (e.g.
4070 4.1.3, 5.2, etc.). It is primarily used for helping select
4071 an appropriate hints file, but might be useful elsewhere for
4072 setting defaults. It is set to '' if we can't figure it out.
4073 We try to be flexible about how much of the version number
4074 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
4075 same for this package, hints files might just be os_4.0 or
4076 os_4.1, etc., not keeping separate files for each little release.
4078 otherlibdirs (otherlibdirs.U):
4079 This variable contains a colon-separated set of paths for the perl
4080 binary to search for additional library files or modules.
4081 These directories will be tacked to the end of @INC.
4082 Perl will automatically search below each path for version-
4083 and architecture-specific directories. See inc_version_list
4085 A value of ' ' means 'none' and is used to preserve this value
4086 for the next run through Configure.
4088 package (package.U):
4089 This variable contains the name of the package being constructed.
4090 It is primarily intended for the use of later Configure units.
4093 This variable contains the name of the preferred pager on the system.
4094 Usual values are (the full pathnames of) more, less, pg, or cat.
4097 This variable contains a command that produces the text of the
4098 /etc/passwd file. This is normally "cat /etc/passwd", but can be
4099 "ypcat passwd" when NIS is used.
4100 On some systems, such as os390, there may be no equivalent
4101 command, in which case this variable is unset.
4103 patchlevel (patchlevel.U):
4104 The patchlevel level of this package.
4105 The value of patchlevel comes from the patchlevel.h file.
4106 In a version number such as 5.6.1, this is the "6".
4107 In patchlevel.h, this is referred to as "PERL_VERSION".
4110 This is an old synonym for p_ in Head.U, the character
4111 used to separate elements in the command shell search PATH.
4114 This variable is used internally by Configure to determine the
4115 full pathname (if any) of the perl program. After Configure runs,
4116 the value is reset to a plain "perl" and is not useful.
4119 This variable contains the full path (if any) to a previously
4120 installed perl5.005 or later suitable for running the script
4121 to determine inc_version_list.
4123 PERL_API_REVISION (patchlevel.h):
4124 This number describes the earliest compatible PERL_REVISION of
4125 Perl ("compatibility" here being defined as sufficient binary/API
4126 compatibility to run XS code built with the older version).
4127 Normally this does not change across maintenance releases.
4128 Please read the comment in patchlevel.h.
4130 PERL_API_SUBVERSION (patchlevel.h):
4131 This number describes the earliest compatible PERL_SUBVERSION of
4132 Perl ("compatibility" here being defined as sufficient binary/API
4133 compatibility to run XS code built with the older version).
4134 Normally this does not change across maintenance releases.
4135 Please read the comment in patchlevel.h.
4137 PERL_API_VERSION (patchlevel.h):
4138 This number describes the earliest compatible PERL_VERSION of
4139 Perl ("compatibility" here being defined as sufficient binary/API
4140 compatibility to run XS code built with the older version).
4141 Normally this does not change across maintenance releases.
4142 Please read the comment in patchlevel.h.
4144 PERL_CONFIG_SH (Oldsyms.U):
4145 This is set to 'true' in config.sh so that a shell script
4146 sourcing config.sh can tell if it has been sourced already.
4148 PERL_PATCHLEVEL (Oldsyms.U):
4149 This symbol reflects the patchlevel, if available. Will usually
4150 come from the .patch file, which is available when the perl
4151 source tree was fetched with rsync.
4153 perl_patchlevel (patchlevel.U):
4154 This is the Perl patch level, a numeric change identifier,
4155 as defined by whichever source code maintenance system
4156 is used to maintain the patches; currently Perforce.
4157 It does not correlate with the Perl version numbers or
4158 the maintenance versus development dichotomy except
4159 by also being increasing.
4161 PERL_REVISION (Oldsyms.U):
4162 In a Perl version number such as 5.6.2, this is the 5.
4163 This value is manually set in patchlevel.h
4165 perl_static_inline (d_static_inline.U):
4166 This variable defines the PERL_STATIC_INLINE symbol to
4167 the best-guess incantation to use for static inline functions.
4168 Possibilities include
4170 static __inline__ (gcc -ansi)
4171 static __inline (MSVC)
4172 static _inline (older MSVC)
4173 static (c89 compilers)
4175 PERL_SUBVERSION (Oldsyms.U):
4176 In a Perl version number such as 5.6.2, this is the 2.
4177 Values greater than 50 represent potentially unstable
4178 development subversions.
4179 This value is manually set in patchlevel.h
4181 PERL_VERSION (Oldsyms.U):
4182 In a Perl version number such as 5.6.2, this is the 6.
4183 This value is manually set in patchlevel.h
4185 perladmin (perladmin.U):
4186 Electronic mail address of the perl5 administrator.
4189 The list of libraries needed by Perl only (any libraries needed
4190 by extensions only will by dropped, if using dynamic loading).
4192 perlpath (perlpath.U):
4193 This variable contains the eventual value of the PERLPATH symbol,
4194 which contains the name of the perl interpreter to be used in
4195 shell scripts and in the "eval 'exec'" idiom. This variable is
4196 not necessarily the pathname of the file containing the perl
4197 interpreter; you must append the executable extension (_exe) if
4198 it is not already present. Note that Perl code that runs during
4199 the Perl build process cannot reference this variable, as Perl
4200 may not have been installed, or even if installed, may be a
4201 different version of Perl.
4204 This variable is used internally by Configure to determine the
4205 full pathname (if any) of the pg program. After Configure runs,
4206 the value is reset to a plain "pg" and is not useful.
4208 phostname (myhostname.U):
4209 This variable contains the eventual value of the PHOSTNAME symbol,
4210 which is a command that can be fed to popen() to get the host name.
4211 The program should probably not presume that the domain is or isn't
4214 pidtype (pidtype.U):
4215 This variable defines PIDTYPE to be something like pid_t, int,
4216 ushort, or whatever type is used to declare process ids in the kernel.
4219 Holds the private path used by Configure to find out the libraries.
4220 Its value is prepend to libpth. This variable takes care of special
4221 machines, like the mips. Usually, it should be empty.
4224 This variable is defined but not used by Configure.
4225 The value is the empty string and is not useful.
4228 This variable is defined but not used by Configure.
4229 The value is the empty string and is not useful.
4232 This variable holds the name of the directory below which the
4233 user will install the package. Usually, this is /usr/local, and
4234 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4235 man pages in /usr/local/man, etc. It is only used to set defaults
4236 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4238 prefixexp (prefix.U):
4239 This variable holds the full absolute path of the directory below
4240 which the user will install the package. Derived from prefix.
4242 privlib (privlib.U):
4243 This variable contains the eventual value of the PRIVLIB symbol,
4244 which is the name of the private library for this package. It may
4245 have a ~ on the front. It is up to the makefile to eventually create
4246 this directory while performing installation (with ~ substitution).
4248 privlibexp (privlib.U):
4249 This variable is the ~name expanded version of privlib, so that you
4250 may use it directly in Makefiles or shell scripts.
4252 procselfexe (d_procselfexe.U):
4253 If d_procselfexe is defined, $procselfexe is the filename
4254 of the symbolic link pointing to the absolute pathname of
4255 the executing program.
4257 prototype (prototype.U):
4258 This variable holds the eventual value of CAN_PROTOTYPE, which
4259 indicates the C compiler can handle funciton prototypes.
4261 ptrsize (ptrsize.U):
4262 This variable contains the value of the PTRSIZE symbol, which
4263 indicates to the C program how many bytes there are in a pointer.
4265 quadkind (quadtype.U):
4266 This variable, if defined, encodes the type of a quad:
4267 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4269 quadtype (quadtype.U):
4270 This variable defines Quad_t to be something like long, int,
4271 long long, int64_t, or whatever type is used for 64-bit integers.
4273 randbits (randfunc.U):
4274 Indicates how many bits are produced by the function used to
4275 generate normalized random numbers.
4277 randfunc (randfunc.U):
4278 Indicates the name of the random number function to use.
4279 Values include drand48, random, and rand. In C programs,
4280 the 'Drand01' macro is defined to generate uniformly distributed
4281 random numbers over the range [0., 1.[ (see drand01 and nrand).
4283 random_r_proto (d_random_r.U):
4284 This variable encodes the prototype of random_r.
4285 It is zero if d_random_r is undef, and one of the
4286 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4289 randseedtype (randfunc.U):
4290 Indicates the type of the argument of the seedfunc.
4292 ranlib (orderlib.U):
4293 This variable is set to the pathname of the ranlib program, if it is
4294 needed to generate random libraries. Set to ":" if ar can generate
4295 random libraries or if random libraries are not supported
4297 rd_nodata (nblock_io.U):
4298 This variable holds the return code from read() when no data is
4299 present. It should be -1, but some systems return 0 when O_NDELAY is
4300 used, which is a shame because you cannot make the difference between
4301 no data and an EOF.. Sigh!
4303 readdir64_r_proto (d_readdir64_r.U):
4304 This variable encodes the prototype of readdir64_r.
4305 It is zero if d_readdir64_r is undef, and one of the
4306 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4309 readdir_r_proto (d_readdir_r.U):
4310 This variable encodes the prototype of readdir_r.
4311 It is zero if d_readdir_r is undef, and one of the
4312 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4315 revision (patchlevel.U):
4316 The value of revision comes from the patchlevel.h file.
4317 In a version number such as 5.6.1, this is the "5".
4318 In patchlevel.h, this is referred to as "PERL_REVISION".
4321 This variable is used internally by Configure to determine the
4322 full pathname (if any) of the rm program. After Configure runs,
4323 the value is reset to a plain "rm" and is not useful.
4326 This is a cleanup variable for try test programs.
4327 Internal Configure use only.
4330 This variable is defined but not used by Configure.
4331 The value is the empty string and is not useful.
4334 This variable contains the command used by Configure
4335 to copy and execute a cross-compiled executable in the
4336 target host. Useful and available only during Perl build.
4337 Empty string '' if not cross-compiling.
4340 This variable contains 'true' or 'false' depending whether the
4341 nm extraction should be performed or not, according to the value
4342 of usenm and the flags on the Configure command line.
4344 sched_yield (d_pthread_y.U):
4345 This variable defines the way to yield the execution
4346 of the current thread.
4348 scriptdir (scriptdir.U):
4349 This variable holds the name of the directory in which the user wants
4350 to put publicly scripts for the package in question. It is either
4351 the same directory as for binaries, or a special one that can be
4352 mounted across different architectures, like /usr/share. Programs
4353 must be prepared to deal with ~name expansion.
4355 scriptdirexp (scriptdir.U):
4356 This variable is the same as scriptdir, but is filename expanded
4357 at configuration time, for programs not wanting to bother with it.
4360 This variable is used internally by Configure to determine the
4361 full pathname (if any) of the sed program. After Configure runs,
4362 the value is reset to a plain "sed" and is not useful.
4364 seedfunc (randfunc.U):
4365 Indicates the random number generating seed function.
4366 Values include srand48, srandom, and srand.
4368 selectminbits (selectminbits.U):
4369 This variable holds the minimum number of bits operated by select.
4370 That is, if you do select(n, ...), how many bits at least will be
4371 cleared in the masks if some activity is detected. Usually this
4372 is either n or 32*ceil(n/32), especially many little-endians do
4373 the latter. This is only useful if you have select(), naturally.
4375 selecttype (selecttype.U):
4376 This variable holds the type used for the 2nd, 3rd, and 4th
4377 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4378 is defined, and 'int *' otherwise. This is only useful if you
4379 have select(), naturally.
4382 This variable is defined but not used by Configure.
4383 The value is the empty string and is not useful.
4385 setgrent_r_proto (d_setgrent_r.U):
4386 This variable encodes the prototype of setgrent_r.
4387 It is zero if d_setgrent_r is undef, and one of the
4388 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4391 sethostent_r_proto (d_sethostent_r.U):
4392 This variable encodes the prototype of sethostent_r.
4393 It is zero if d_sethostent_r is undef, and one of the
4394 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4397 setlocale_r_proto (d_setlocale_r.U):
4398 This variable encodes the prototype of setlocale_r.
4399 It is zero if d_setlocale_r is undef, and one of the
4400 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4403 setnetent_r_proto (d_setnetent_r.U):
4404 This variable encodes the prototype of setnetent_r.
4405 It is zero if d_setnetent_r is undef, and one of the
4406 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4409 setprotoent_r_proto (d_setprotoent_r.U):
4410 This variable encodes the prototype of setprotoent_r.
4411 It is zero if d_setprotoent_r is undef, and one of the
4412 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4415 setpwent_r_proto (d_setpwent_r.U):
4416 This variable encodes the prototype of setpwent_r.
4417 It is zero if d_setpwent_r is undef, and one of the
4418 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4421 setservent_r_proto (d_setservent_r.U):
4422 This variable encodes the prototype of setservent_r.
4423 It is zero if d_setservent_r is undef, and one of the
4424 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4427 sGMTIME_max (time_size.U):
4428 This variable defines the maximum value of the time_t offset that
4429 the system function gmtime () accepts
4431 sGMTIME_min (time_size.U):
4432 This variable defines the minimum value of the time_t offset that
4433 the system function gmtime () accepts
4436 This variable contains the full pathname of the shell used
4437 on this system to execute Bourne shell scripts. Usually, this will be
4438 /bin/sh, though it's possible that some systems will have /bin/ksh,
4439 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4441 This unit comes before Options.U, so you can't set sh with a '-D'
4442 option, though you can override this (and startsh)
4443 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4446 This variable is defined but not used by Configure.
4447 The value is the empty string and is not useful.
4449 sharpbang (spitshell.U):
4450 This variable contains the string #! if this system supports that
4453 shmattype (d_shmat.U):
4454 This symbol contains the type of pointer returned by shmat().
4455 It can be 'void *' or 'char *'.
4457 shortsize (intsize.U):
4458 This variable contains the value of the SHORTSIZE symbol which
4459 indicates to the C program how many bytes there are in a short.
4461 shrpenv (libperl.U):
4462 If the user builds a shared libperl.so, then we need to tell the
4463 'perl' executable where it will be able to find the installed libperl.so.
4464 One way to do this on some systems is to set the environment variable
4465 LD_RUN_PATH to the directory that will be the final location of the
4466 shared libperl.so. The makefile can use this with something like
4467 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4469 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4472 See the main perl Makefile.SH for actual working usage.
4473 Alternatively, we might be able to use a command line option such
4474 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4475 $archlibexp/CORE (Linux).
4477 shsharp (spitshell.U):
4478 This variable tells further Configure units whether your sh can
4481 sig_count (sig_name.U):
4482 This variable holds a number larger than the largest valid
4483 signal number. This is usually the same as the NSIG macro.
4485 sig_name (sig_name.U):
4486 This variable holds the signal names, space separated. The leading
4487 SIG in signal name is removed. A ZERO is prepended to the list.
4488 This is currently not used, sig_name_init is used instead.
4490 sig_name_init (sig_name.U):
4491 This variable holds the signal names, enclosed in double quotes and
4492 separated by commas, suitable for use in the SIG_NAME definition
4493 below. A "ZERO" is prepended to the list, and the list is
4494 terminated with a plain 0. The leading SIG in signal names
4495 is removed. See sig_num.
4497 sig_num (sig_name.U):
4498 This variable holds the signal numbers, space separated. A ZERO is
4499 prepended to the list (corresponding to the fake SIGZERO).
4500 Those numbers correspond to the value of the signal listed
4501 in the same place within the sig_name list.
4502 This is currently not used, sig_num_init is used instead.
4504 sig_num_init (sig_name.U):
4505 This variable holds the signal numbers, enclosed in double quotes and
4506 separated by commas, suitable for use in the SIG_NUM definition
4507 below. A "ZERO" is prepended to the list, and the list is
4508 terminated with a plain 0.
4510 sig_size (sig_name.U):
4511 This variable contains the number of elements of the sig_name
4514 signal_t (d_voidsig.U):
4515 This variable holds the type of the signal handler (void or int).
4517 sitearch (sitearch.U):
4518 This variable contains the eventual value of the SITEARCH symbol,
4519 which is the name of the private library for this package. It may
4520 have a ~ on the front. It is up to the makefile to eventually create
4521 this directory while performing installation (with ~ substitution).
4522 The standard distribution will put nothing in this directory.
4523 After perl has been installed, users may install their own local
4524 architecture-dependent modules in this directory with
4525 MakeMaker Makefile.PL
4526 or equivalent. See INSTALL for details.
4528 sitearchexp (sitearch.U):
4529 This variable is the ~name expanded version of sitearch, so that you
4530 may use it directly in Makefiles or shell scripts.
4532 sitebin (sitebin.U):
4533 This variable holds the name of the directory in which the user wants
4534 to put add-on publicly executable files for the package in question. It
4535 is most often a local directory such as /usr/local/bin. Programs using
4536 this variable must be prepared to deal with ~name substitution.
4537 The standard distribution will put nothing in this directory.
4538 After perl has been installed, users may install their own local
4539 executables in this directory with
4540 MakeMaker Makefile.PL
4541 or equivalent. See INSTALL for details.
4543 sitebinexp (sitebin.U):
4544 This is the same as the sitebin variable, but is filename expanded at
4545 configuration time, for use in your makefiles.
4547 sitehtml1dir (sitehtml1dir.U):
4548 This variable contains the name of the directory in which site-specific
4549 html source pages are to be put. It is the responsibility of the
4550 Makefile.SH to get the value of this into the proper command.
4551 You must be prepared to do the ~name expansion yourself.
4552 The standard distribution will put nothing in this directory.
4553 After perl has been installed, users may install their own local
4554 html pages in this directory with
4555 MakeMaker Makefile.PL
4556 or equivalent. See INSTALL for details.
4558 sitehtml1direxp (sitehtml1dir.U):
4559 This variable is the same as the sitehtml1dir variable, but is filename
4560 expanded at configuration time, for convenient use in makefiles.
4562 sitehtml3dir (sitehtml3dir.U):
4563 This variable contains the name of the directory in which site-specific
4564 library html source pages are to be put. It is the responsibility of the
4565 Makefile.SH to get the value of this into the proper command.
4566 You must be prepared to do the ~name expansion yourself.
4567 The standard distribution will put nothing in this directory.
4568 After perl has been installed, users may install their own local
4569 library html pages in this directory with
4570 MakeMaker Makefile.PL
4571 or equivalent. See INSTALL for details.
4573 sitehtml3direxp (sitehtml3dir.U):
4574 This variable is the same as the sitehtml3dir variable, but is filename
4575 expanded at configuration time, for convenient use in makefiles.
4577 sitelib (sitelib.U):
4578 This variable contains the eventual value of the SITELIB symbol,
4579 which is the name of the private library for this package. It may
4580 have a ~ on the front. It is up to the makefile to eventually create
4581 this directory while performing installation (with ~ substitution).
4582 The standard distribution will put nothing in this directory.
4583 After perl has been installed, users may install their own local
4584 architecture-independent modules in this directory with
4585 MakeMaker Makefile.PL
4586 or equivalent. See INSTALL for details.
4588 sitelib_stem (sitelib.U):
4589 This variable is $sitelibexp with any trailing version-specific component
4590 removed. The elements in inc_version_list (inc_version_list.U) can
4591 be tacked onto this variable to generate a list of directories to search.
4593 sitelibexp (sitelib.U):
4594 This variable is the ~name expanded version of sitelib, so that you
4595 may use it directly in Makefiles or shell scripts.
4597 siteman1dir (siteman1dir.U):
4598 This variable contains the name of the directory in which site-specific
4599 manual source pages are to be put. It is the responsibility of the
4600 Makefile.SH to get the value of this into the proper command.
4601 You must be prepared to do the ~name expansion yourself.
4602 The standard distribution will put nothing in this directory.
4603 After perl has been installed, users may install their own local
4604 man1 pages in this directory with
4605 MakeMaker Makefile.PL
4606 or equivalent. See INSTALL for details.
4608 siteman1direxp (siteman1dir.U):
4609 This variable is the same as the siteman1dir variable, but is filename
4610 expanded at configuration time, for convenient use in makefiles.
4612 siteman3dir (siteman3dir.U):
4613 This variable contains the name of the directory in which site-specific
4614 library man source pages are to be put. It is the responsibility of the
4615 Makefile.SH to get the value of this into the proper command.
4616 You must be prepared to do the ~name expansion yourself.
4617 The standard distribution will put nothing in this directory.
4618 After perl has been installed, users may install their own local
4619 man3 pages in this directory with
4620 MakeMaker Makefile.PL
4621 or equivalent. See INSTALL for details.
4623 siteman3direxp (siteman3dir.U):
4624 This variable is the same as the siteman3dir variable, but is filename
4625 expanded at configuration time, for convenient use in makefiles.
4627 siteprefix (siteprefix.U):
4628 This variable holds the full absolute path of the directory below
4629 which the user will install add-on packages.
4630 See INSTALL for usage and examples.
4632 siteprefixexp (siteprefix.U):
4633 This variable holds the full absolute path of the directory below
4634 which the user will install add-on packages. Derived from siteprefix.
4636 sitescript (sitescript.U):
4637 This variable holds the name of the directory in which the user wants
4638 to put add-on publicly executable files for the package in question. It
4639 is most often a local directory such as /usr/local/bin. Programs using
4640 this variable must be prepared to deal with ~name substitution.
4641 The standard distribution will put nothing in this directory.
4642 After perl has been installed, users may install their own local
4643 scripts in this directory with
4644 MakeMaker Makefile.PL
4645 or equivalent. See INSTALL for details.
4647 sitescriptexp (sitescript.U):
4648 This is the same as the sitescript variable, but is filename expanded at
4649 configuration time, for use in your makefiles.
4651 sizesize (sizesize.U):
4652 This variable contains the size of a sizetype in bytes.
4654 sizetype (sizetype.U):
4655 This variable defines sizetype to be something like size_t,
4656 unsigned long, or whatever type is used to declare length
4657 parameters for string functions.
4660 This variable is defined but not used by Configure.
4661 The value is the empty string and is not useful.
4663 sLOCALTIME_max (time_size.U):
4664 This variable defines the maximum value of the time_t offset that
4665 the system function localtime () accepts
4667 sLOCALTIME_min (time_size.U):
4668 This variable defines the minimum value of the time_t offset that
4669 the system function localtime () accepts
4672 This variable is defined but not used by Configure.
4673 The value is the empty string and is not useful.
4676 This variable holds the extension used to identify shared libraries
4677 (also known as shared objects) on the system. Usually set to 'so'.
4679 sockethdr (d_socket.U):
4680 This variable has any cpp '-I' flags needed for socket support.
4682 socketlib (d_socket.U):
4683 This variable has the names of any libraries needed for socket support.
4685 socksizetype (socksizetype.U):
4686 This variable holds the type used for the size argument
4687 for various socket calls like accept. Usual values include
4688 socklen_t, size_t, and int.
4691 This variable is used internally by Configure to determine the
4692 full pathname (if any) of the sort program. After Configure runs,
4693 the value is reset to a plain "sort" and is not useful.
4695 spackage (package.U):
4696 This variable contains the name of the package being constructed,
4697 with the first letter uppercased, i.e. suitable for starting
4700 spitshell (spitshell.U):
4701 This variable contains the command necessary to spit out a runnable
4702 shell on this system. It is either cat or a grep '-v' for # comments.
4704 sPRId64 (quadfio.U):
4705 This variable, if defined, contains the string used by stdio to
4706 format 64-bit decimal numbers (format 'd') for output.
4708 sPRIeldbl (longdblfio.U):
4709 This variable, if defined, contains the string used by stdio to
4710 format long doubles (format 'e') for output.
4712 sPRIEUldbl (longdblfio.U):
4713 This variable, if defined, contains the string used by stdio to
4714 format long doubles (format 'E') for output.
4715 The 'U' in the name is to separate this from sPRIeldbl so that even
4716 case-blind systems can see the difference.
4718 sPRIfldbl (longdblfio.U):
4719 This variable, if defined, contains the string used by stdio to
4720 format long doubles (format 'f') for output.
4722 sPRIFUldbl (longdblfio.U):
4723 This variable, if defined, contains the string used by stdio to
4724 format long doubles (format 'F') for output.
4725 The 'U' in the name is to separate this from sPRIfldbl so that even
4726 case-blind systems can see the difference.
4728 sPRIgldbl (longdblfio.U):
4729 This variable, if defined, contains the string used by stdio to
4730 format long doubles (format 'g') for output.
4732 sPRIGUldbl (longdblfio.U):
4733 This variable, if defined, contains the string used by stdio to
4734 format long doubles (format 'G') for output.
4735 The 'U' in the name is to separate this from sPRIgldbl so that even
4736 case-blind systems can see the difference.
4738 sPRIi64 (quadfio.U):
4739 This variable, if defined, contains the string used by stdio to
4740 format 64-bit decimal numbers (format 'i') for output.
4742 sPRIo64 (quadfio.U):
4743 This variable, if defined, contains the string used by stdio to
4744 format 64-bit octal numbers (format 'o') for output.
4746 sPRIu64 (quadfio.U):
4747 This variable, if defined, contains the string used by stdio to
4748 format 64-bit unsigned decimal numbers (format 'u') for output.
4750 sPRIx64 (quadfio.U):
4751 This variable, if defined, contains the string used by stdio to
4752 format 64-bit hexadecimal numbers (format 'x') for output.
4754 sPRIXU64 (quadfio.U):
4755 This variable, if defined, contains the string used by stdio to
4756 format 64-bit hExADECimAl numbers (format 'X') for output.
4757 The 'U' in the name is to separate this from sPRIx64 so that even
4758 case-blind systems can see the difference.
4760 srand48_r_proto (d_srand48_r.U):
4761 This variable encodes the prototype of srand48_r.
4762 It is zero if d_srand48_r is undef, and one of the
4763 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4766 srandom_r_proto (d_srandom_r.U):
4767 This variable encodes the prototype of srandom_r.
4768 It is zero if d_srandom_r is undef, and one of the
4769 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4773 This variable holds the (possibly relative) path of the package source.
4774 It is up to the Makefile to use this variable and set VPATH accordingly
4775 to find the sources remotely. Use $pkgsrc to have an absolute path.
4777 sSCNfldbl (longdblfio.U):
4778 This variable, if defined, contains the string used by stdio to
4779 format long doubles (format 'f') for input.
4781 ssizetype (ssizetype.U):
4782 This variable defines ssizetype to be something like ssize_t,
4783 long or int. It is used by functions that return a count
4784 of bytes or an error condition. It must be a signed type.
4785 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4787 st_ino_sign (st_ino_def.U):
4788 This variable contains the signedness of struct stat's st_ino.
4789 1 for unsigned, -1 for signed.
4791 st_ino_size (st_ino_def.U):
4792 This variable contains the size of struct stat's st_ino in bytes.
4794 startperl (startperl.U):
4795 This variable contains the string to put on the front of a perl
4796 script to make sure (hopefully) that it runs with perl and not some
4797 shell. Of course, that leading line must be followed by the classical
4799 eval 'exec perl -S $0 ${1+"$@"}'
4800 if $running_under_some_shell;
4801 to guarantee perl startup should the shell execute the script. Note
4802 that this magic incantation is not understood by csh.
4804 startsh (startsh.U):
4805 This variable contains the string to put on the front of a shell
4806 script to make sure (hopefully) that it runs with sh and not some
4809 static_ext (Extensions.U):
4810 This variable holds a list of XS extension files we want to
4811 link statically into the package. It is used by Makefile.
4813 stdchar (stdchar.U):
4814 This variable conditionally defines STDCHAR to be the type of char
4815 used in stdio.h. It has the values "unsigned char" or "char".
4817 stdio_base (d_stdstdio.U):
4818 This variable defines how, given a FILE pointer, fp, to access the
4819 _base field (or equivalent) of stdio.h's FILE structure. This will
4820 be used to define the macro FILE_base(fp).
4822 stdio_bufsiz (d_stdstdio.U):
4823 This variable defines how, given a FILE pointer, fp, to determine
4824 the number of bytes store in the I/O buffer pointer to by the
4825 _base field (or equivalent) of stdio.h's FILE structure. This will
4826 be used to define the macro FILE_bufsiz(fp).
4828 stdio_cnt (d_stdstdio.U):
4829 This variable defines how, given a FILE pointer, fp, to access the
4830 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4831 be used to define the macro FILE_cnt(fp).
4833 stdio_filbuf (d_stdstdio.U):
4834 This variable defines how, given a FILE pointer, fp, to tell
4835 stdio to refill its internal buffers (?). This will
4836 be used to define the macro FILE_filbuf(fp).
4838 stdio_ptr (d_stdstdio.U):
4839 This variable defines how, given a FILE pointer, fp, to access the
4840 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4841 be used to define the macro FILE_ptr(fp).
4843 stdio_stream_array (stdio_streams.U):
4844 This variable tells the name of the array holding the stdio streams.
4845 Usual values include _iob, __iob, and __sF.
4847 strerror_r_proto (d_strerror_r.U):
4848 This variable encodes the prototype of strerror_r.
4849 It is zero if d_strerror_r is undef, and one of the
4850 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4853 strings (i_string.U):
4854 This variable holds the full path of the string header that will be
4855 used. Typically /usr/include/string.h or /usr/include/strings.h.
4858 This variable is defined but not used by Configure.
4859 The value is the empty string and is not useful.
4861 subversion (patchlevel.U):
4862 The subversion level of this package.
4863 The value of subversion comes from the patchlevel.h file.
4864 In a version number such as 5.6.1, this is the "1".
4865 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4866 This is unique to perl.
4869 This variable holds the place where the manual is located on this
4870 system. It is not the place where the user wants to put his manual
4871 pages. Rather it is the place where Configure may look to find manual
4872 for unix commands (section 1 of the manual usually). See mansrc.
4875 This variable is defined but not used by Configure.
4876 The value is the empty string and is not useful.
4879 This variable is defined but not used by Configure.
4880 The value is the empty string and is not useful.
4882 targetarch (Cross.U):
4883 If cross-compiling, this variable contains the target architecture.
4884 If not, this will be empty.
4887 This variable is defined but not used by Configure.
4888 The value is the empty string and is not useful.
4891 This variable is defined but not used by Configure.
4892 The value is the empty string and is not useful.
4895 This variable is used internally by Configure to determine the
4896 full pathname (if any) of the test program. After Configure runs,
4897 the value is reset to a plain "test" and is not useful.
4899 timeincl (i_time.U):
4900 This variable holds the full path of the included time header(s).
4902 timetype (d_time.U):
4903 This variable holds the type returned by time(). It can be long,
4904 or time_t on BSD sites (in which case <sys/types.h> should be
4905 included). Anyway, the type Time_t should be used.
4907 tmpnam_r_proto (d_tmpnam_r.U):
4908 This variable encodes the prototype of tmpnam_r.
4909 It is zero if d_tmpnam_r is undef, and one of the
4910 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4914 This variable contains the command used by Configure
4915 to copy to from the target host. Useful and available
4916 only during Perl build.
4917 The string ':' if not cross-compiling.
4920 This variable is used internally by Configure to determine the
4921 full pathname (if any) of the touch program. After Configure runs,
4922 the value is reset to a plain "touch" and is not useful.
4925 This variable is used internally by Configure to determine the
4926 full pathname (if any) of the tr program. After Configure runs,
4927 the value is reset to a plain "tr" and is not useful.
4930 This variable contains the value to be passed to the tr(1)
4931 command to transliterate a newline. Typical values are
4932 '\012' and '\n'. This is needed for EBCDIC systems where
4933 newline is not necessarily '\012'.
4936 This variable is defined but not used by Configure.
4937 The value is the empty string and is not useful.
4939 ttyname_r_proto (d_ttyname_r.U):
4940 This variable encodes the prototype of ttyname_r.
4941 It is zero if d_ttyname_r is undef, and one of the
4942 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4946 This variable is the size of an U16 in bytes.
4949 This variable contains the C type used for Perl's U16.
4952 This variable is the size of an U32 in bytes.
4955 This variable contains the C type used for Perl's U32.
4958 This variable is the size of an U64 in bytes.
4961 This variable contains the C type used for Perl's U64.
4964 This variable is the size of an U8 in bytes.
4967 This variable contains the C type used for Perl's U8.
4970 This variable contains the format string used for printing a Uid_t.
4972 uidsign (uidsign.U):
4973 This variable contains the signedness of a uidtype.
4974 1 for unsigned, -1 for signed.
4976 uidsize (uidsize.U):
4977 This variable contains the size of a uidtype in bytes.
4979 uidtype (uidtype.U):
4980 This variable defines Uid_t to be something like uid_t, int,
4981 ushort, or whatever type is used to declare user ids in the kernel.
4984 This variable is used internally by Configure to determine the
4985 full pathname (if any) of the uname program. After Configure runs,
4986 the value is reset to a plain "uname" and is not useful.
4989 This variable is used internally by Configure to determine the
4990 full pathname (if any) of the uniq program. After Configure runs,
4991 the value is reset to a plain "uniq" and is not useful.
4993 uquadtype (quadtype.U):
4994 This variable defines Uquad_t to be something like unsigned long,
4995 unsigned int, unsigned long long, uint64_t, or whatever type is
4996 used for 64-bit integers.
4998 use5005threads (usethreads.U):
4999 This variable conditionally defines the USE_5005THREADS symbol,
5000 and indicates that Perl should be built to use the 5.005-based
5001 threading implementation. Only valid up to 5.8.x.
5003 use64bitall (use64bits.U):
5004 This variable conditionally defines the USE_64_BIT_ALL symbol,
5005 and indicates that 64-bit integer types should be used
5006 when available. The maximal possible
5007 64-bitness is employed: LP64 or ILP64, meaning that you will
5008 be able to use more than 2 gigabytes of memory. This mode is
5009 even more binary incompatible than USE_64_BIT_INT. You may not
5010 be able to run the resulting executable in a 32-bit CPU at all or
5011 you may need at least to reboot your OS to 64-bit mode.
5013 use64bitint (use64bits.U):
5014 This variable conditionally defines the USE_64_BIT_INT symbol,
5015 and indicates that 64-bit integer types should be used
5016 when available. The minimal possible 64-bitness
5017 is employed, just enough to get 64-bit integers into Perl.
5018 This may mean using for example "long longs", while your memory
5019 may still be limited to 2 gigabytes.
5021 usecrosscompile (Cross.U):
5022 This variable conditionally defines the USE_CROSS_COMPILE symbol,
5023 and indicates that Perl has been cross-compiled.
5026 This variable indicates that Perl was configured with development
5027 features enabled. This should not be done for production builds.
5030 This variable indicates if the system supports dynamic
5031 loading of some sort. See also dlsrc and dlobj.
5033 usedtrace (usedtrace.U):
5034 This variable indicates whether we are compiling with dtrace
5035 support. See also dtrace.
5037 usefaststdio (usefaststdio.U):
5038 This variable conditionally defines the USE_FAST_STDIO symbol,
5039 and indicates that Perl should be built to use 'fast stdio'.
5040 Defaults to define in Perls 5.8 and earlier, to undef later.
5042 useithreads (usethreads.U):
5043 This variable conditionally defines the USE_ITHREADS symbol,
5044 and indicates that Perl should be built to use the interpreter-based
5045 threading implementation.
5047 usekernprocpathname (usekernprocpathname.U):
5048 This variable, indicates that we can use sysctl with
5049 KERN_PROC_PATHNAME to get a full path for the executable, and hence
5050 convert $^X to an absolute path.
5052 uselargefiles (uselfs.U):
5053 This variable conditionally defines the USE_LARGE_FILES symbol,
5054 and indicates that large file interfaces should be used when
5057 uselongdouble (uselongdbl.U):
5058 This variable conditionally defines the USE_LONG_DOUBLE symbol,
5059 and indicates that long doubles should be used when available.
5061 usemallocwrap (mallocsrc.U):
5062 This variable contains y if we are wrapping malloc to prevent
5063 integer overflow during size calculations.
5065 usemorebits (usemorebits.U):
5066 This variable conditionally defines the USE_MORE_BITS symbol,
5067 and indicates that explicit 64-bit interfaces and long doubles
5068 should be used when available.
5070 usemultiplicity (usemultiplicity.U):
5071 This variable conditionally defines the MULTIPLICITY symbol,
5072 and indicates that Perl should be built to use multiplicity.
5074 usemymalloc (mallocsrc.U):
5075 This variable contains y if the malloc that comes with this package
5076 is desired over the system's version of malloc. People often include
5077 special versions of malloc for efficiency, but such versions are often
5078 less portable. See also mallocsrc and mallocobj.
5079 If this is 'y', then -lmalloc is removed from $libs.
5082 This variable contains 'true' or 'false' depending whether the
5083 nm extraction is wanted or not.
5085 usensgetexecutablepath (usensgetexecutablepath.U):
5086 This symbol, if defined, indicates that we can use _NSGetExecutablePath
5087 and realpath to get a full path for the executable, and hence convert
5088 $^X to an absolute path.
5090 useopcode (Extensions.U):
5091 This variable holds either 'true' or 'false' to indicate
5092 whether the Opcode extension should be used. The sole
5093 use for this currently is to allow an easy mechanism
5094 for users to skip the Opcode extension from the Configure
5097 useperlio (useperlio.U):
5098 This variable conditionally defines the USE_PERLIO symbol,
5099 and indicates that the PerlIO abstraction should be
5102 useposix (Extensions.U):
5103 This variable holds either 'true' or 'false' to indicate
5104 whether the POSIX extension should be used. The sole
5105 use for this currently is to allow an easy mechanism
5106 for hints files to indicate that POSIX will not compile
5107 on a particular system.
5109 usereentrant (usethreads.U):
5110 This variable conditionally defines the USE_REENTRANT_API symbol,
5111 which indicates that the thread code may try to use the various
5112 _r versions of library functions. This is only potentially
5113 meaningful if usethreads is set and is very experimental, it is
5114 not even prompted for.
5116 userelocatableinc (bin.U):
5117 This variable is set to true to indicate that perl should relocate
5118 @INC entries at runtime based on the path to the perl binary.
5119 Any @INC paths starting ".../" are relocated relative to the directory
5120 containing the perl binary, and a logical cleanup of the path is then
5121 made around the join point (removing "dir/../" pairs)
5124 This variable is set to true when the user agrees to use sfio.
5125 It is set to false when sfio is not available or when the user
5126 explicitly requests not to use sfio. It is here primarily so
5127 that command-line settings can override the auto-detection of
5128 d_sfio without running into a "WHOA THERE".
5130 useshrplib (libperl.U):
5131 This variable is set to 'true' if the user wishes
5132 to build a shared libperl, and 'false' otherwise.
5134 usesitecustomize (d_sitecustomize.U):
5135 This variable is set to true when the user requires a mechanism that
5136 allows the sysadmin to add entries to @INC at runtime. This variable
5137 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
5139 usesocks (usesocks.U):
5140 This variable conditionally defines the USE_SOCKS symbol,
5141 and indicates that Perl should be built to use SOCKS.
5143 usethreads (usethreads.U):
5144 This variable conditionally defines the USE_THREADS symbol,
5145 and indicates that Perl should be built to use threads.
5147 usevendorprefix (vendorprefix.U):
5148 This variable tells whether the vendorprefix
5149 and consequently other vendor* paths are in use.
5151 usevfork (d_vfork.U):
5152 This variable is set to true when the user accepts to use vfork.
5153 It is set to false when no vfork is available or when the user
5154 explicitly requests not to use vfork.
5157 This variable holds the path of the include files, which is
5158 usually /usr/include. It is mainly used by other Configure units.
5161 This variable is defined but not used by Configure.
5162 The value is the empty string and is not useful.
5164 uvoformat (perlxvf.U):
5165 This variable contains the format string used for printing
5166 a Perl UV as an unsigned octal integer.
5169 This variable is the size of a UV in bytes.
5172 This variable contains the C type used for Perl's UV.
5174 uvuformat (perlxvf.U):
5175 This variable contains the format string used for printing
5176 a Perl UV as an unsigned decimal integer.
5178 uvxformat (perlxvf.U):
5179 This variable contains the format string used for printing
5180 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
5182 uvXUformat (perlxvf.U):
5183 This variable contains the format string used for printing
5184 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
5186 vaproto (vaproto.U):
5187 This variable conditionally defines CAN_VAPROTO on systems supporting
5188 prototype declaration of functions with a variable number of
5189 arguments. See also prototype.
5191 vendorarch (vendorarch.U):
5192 This variable contains the value of the PERL_VENDORARCH symbol.
5193 It may have a ~ on the front.
5194 The standard distribution will put nothing in this directory.
5195 Vendors who distribute perl may wish to place their own
5196 architecture-dependent modules and extensions in this directory with
5197 MakeMaker Makefile.PL INSTALLDIRS=vendor
5198 or equivalent. See INSTALL for details.
5200 vendorarchexp (vendorarch.U):
5201 This variable is the ~name expanded version of vendorarch, so that you
5202 may use it directly in Makefiles or shell scripts.
5204 vendorbin (vendorbin.U):
5205 This variable contains the eventual value of the VENDORBIN symbol.
5206 It may have a ~ on the front.
5207 The standard distribution will put nothing in this directory.
5208 Vendors who distribute perl may wish to place additional
5209 binaries in this directory with
5210 MakeMaker Makefile.PL INSTALLDIRS=vendor
5211 or equivalent. See INSTALL for details.
5213 vendorbinexp (vendorbin.U):
5214 This variable is the ~name expanded version of vendorbin, so that you
5215 may use it directly in Makefiles or shell scripts.
5217 vendorhtml1dir (vendorhtml1dir.U):
5218 This variable contains the name of the directory for html
5219 pages. It may have a ~ on the front.
5220 The standard distribution will put nothing in this directory.
5221 Vendors who distribute perl may wish to place their own
5222 html pages in this directory with
5223 MakeMaker Makefile.PL INSTALLDIRS=vendor
5224 or equivalent. See INSTALL for details.
5226 vendorhtml1direxp (vendorhtml1dir.U):
5227 This variable is the ~name expanded version of vendorhtml1dir, so that you
5228 may use it directly in Makefiles or shell scripts.
5230 vendorhtml3dir (vendorhtml3dir.U):
5231 This variable contains the name of the directory for html
5232 library pages. It may have a ~ on the front.
5233 The standard distribution will put nothing in this directory.
5234 Vendors who distribute perl may wish to place their own
5235 html pages for modules and extensions in this directory with
5236 MakeMaker Makefile.PL INSTALLDIRS=vendor
5237 or equivalent. See INSTALL for details.
5239 vendorhtml3direxp (vendorhtml3dir.U):
5240 This variable is the ~name expanded version of vendorhtml3dir, so that you
5241 may use it directly in Makefiles or shell scripts.
5243 vendorlib (vendorlib.U):
5244 This variable contains the eventual value of the VENDORLIB symbol,
5245 which is the name of the private library for this package.
5246 The standard distribution will put nothing in this directory.
5247 Vendors who distribute perl may wish to place their own
5248 modules in this directory with
5249 MakeMaker Makefile.PL INSTALLDIRS=vendor
5250 or equivalent. See INSTALL for details.
5252 vendorlib_stem (vendorlib.U):
5253 This variable is $vendorlibexp with any trailing version-specific component
5254 removed. The elements in inc_version_list (inc_version_list.U) can
5255 be tacked onto this variable to generate a list of directories to search.
5257 vendorlibexp (vendorlib.U):
5258 This variable is the ~name expanded version of vendorlib, so that you
5259 may use it directly in Makefiles or shell scripts.
5261 vendorman1dir (vendorman1dir.U):
5262 This variable contains the name of the directory for man1
5263 pages. It may have a ~ on the front.
5264 The standard distribution will put nothing in this directory.
5265 Vendors who distribute perl may wish to place their own
5266 man1 pages in this directory with
5267 MakeMaker Makefile.PL INSTALLDIRS=vendor
5268 or equivalent. See INSTALL for details.
5270 vendorman1direxp (vendorman1dir.U):
5271 This variable is the ~name expanded version of vendorman1dir, so that you
5272 may use it directly in Makefiles or shell scripts.
5274 vendorman3dir (vendorman3dir.U):
5275 This variable contains the name of the directory for man3
5276 pages. It may have a ~ on the front.
5277 The standard distribution will put nothing in this directory.
5278 Vendors who distribute perl may wish to place their own
5279 man3 pages in this directory with
5280 MakeMaker Makefile.PL INSTALLDIRS=vendor
5281 or equivalent. See INSTALL for details.
5283 vendorman3direxp (vendorman3dir.U):
5284 This variable is the ~name expanded version of vendorman3dir, so that you
5285 may use it directly in Makefiles or shell scripts.
5287 vendorprefix (vendorprefix.U):
5288 This variable holds the full absolute path of the directory below
5289 which the vendor will install add-on packages.
5290 See INSTALL for usage and examples.
5292 vendorprefixexp (vendorprefix.U):
5293 This variable holds the full absolute path of the directory below
5294 which the vendor will install add-on packages. Derived from vendorprefix.
5296 vendorscript (vendorscript.U):
5297 This variable contains the eventual value of the VENDORSCRIPT symbol.
5298 It may have a ~ on the front.
5299 The standard distribution will put nothing in this directory.
5300 Vendors who distribute perl may wish to place additional
5301 executable scripts in this directory with
5302 MakeMaker Makefile.PL INSTALLDIRS=vendor
5303 or equivalent. See INSTALL for details.
5305 vendorscriptexp (vendorscript.U):
5306 This variable is the ~name expanded version of vendorscript, so that you
5307 may use it directly in Makefiles or shell scripts.
5309 version (patchlevel.U):
5310 The full version number of this package, such as 5.6.1 (or 5_6_1).
5311 This combines revision, patchlevel, and subversion to get the
5312 full version number, including any possible subversions.
5313 This is suitable for use as a directory name, and hence is
5314 filesystem dependent.
5316 version_patchlevel_string (patchlevel.U):
5317 This is a string combining version, subversion and
5318 perl_patchlevel (if perl_patchlevel is non-zero).
5319 It is typically something like
5320 'version 7 subversion 1' or
5321 'version 7 subversion 1 patchlevel 11224'
5322 It is computed here to avoid duplication of code in myconfig.SH
5325 versiononly (versiononly.U):
5326 If set, this symbol indicates that only the version-specific
5327 components of a perl installation should be installed.
5328 This may be useful for making a test installation of a new
5329 version without disturbing the existing installation.
5330 Setting versiononly is equivalent to setting installperl's -v option.
5331 In particular, the non-versioned scripts and programs such as
5332 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5333 (see INSTALL for a more complete list). Nor are the man
5335 Usually, this is undef.
5338 This variable is defined but not used by Configure.
5339 The value is the empty string and is not useful.
5341 voidflags (voidflags.U):
5342 This variable contains the eventual value of the VOIDFLAGS symbol,
5343 which indicates how much support of the void type is given by this
5344 compiler. See VOIDFLAGS for more info.
5347 This variable holds extra path (space-separated) used to find
5348 libraries on this platform, for example CPU-specific libraries
5349 (on multi-CPU platforms) may be listed here.
5352 This variable holds the name of the compiler compiler we
5353 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5356 This variable contains any additional yacc flags desired by the
5357 user. It is up to the Makefile to use this.
5360 This variable is defined but not used by Configure.
5361 The value is the empty string and is not useful.
5364 This variable is used internally by Configure to determine the
5365 full pathname (if any) of the zip program. After Configure runs,
5366 the value is reset to a plain "zip" and is not useful.