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_ipv6_mreq (d_socket.U):
1275 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
1276 indicates the availability of a struct ipv6_mreq.
1278 d_isascii (d_isascii.U):
1279 This variable conditionally defines the HAS_ISASCII constant,
1280 which indicates to the C program that isascii() is available.
1282 d_isblank (d_isblank.U):
1283 This variable conditionally defines the HAS_ISBLANK constant,
1284 which indicates to the C program that isblank() is available.
1286 d_isfinite (d_isfinite.U):
1287 This variable conditionally defines the HAS_ISFINITE symbol, which
1288 indicates to the C program that the isfinite() routine is available.
1290 d_isinf (d_isinf.U):
1291 This variable conditionally defines the HAS_ISINF symbol, which
1292 indicates to the C program that the isinf() routine is available.
1294 d_isnan (d_isnan.U):
1295 This variable conditionally defines the HAS_ISNAN symbol, which
1296 indicates to the C program that the isnan() routine is available.
1298 d_isnanl (d_isnanl.U):
1299 This variable conditionally defines the HAS_ISNANL symbol, which
1300 indicates to the C program that the isnanl() routine is available.
1302 d_killpg (d_killpg.U):
1303 This variable conditionally defines the HAS_KILLPG symbol, which
1304 indicates to the C program that the killpg() routine is available
1305 to kill process groups.
1307 d_lchown (d_lchown.U):
1308 This variable conditionally defines the HAS_LCHOWN symbol, which
1309 indicates to the C program that the lchown() routine is available
1310 to operate on a symbolic link (instead of following the link).
1312 d_ldbl_dig (d_ldbl_dig.U):
1313 This variable conditionally defines d_ldbl_dig if this system's
1314 header files provide LDBL_DIG, which is the number of significant
1315 digits in a long double precision number.
1317 d_libm_lib_version (d_libm_lib_version.U):
1318 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1319 which indicates to the C program that math.h defines _LIB_VERSION
1320 being available in libm
1323 This variable conditionally defines HAS_LINK if link() is
1324 available to create hard links.
1326 d_localtime64 (d_timefuncs64.U):
1327 This variable conditionally defines the HAS_LOCALTIME64 symbol, which
1328 indicates to the C program that the localtime64 () routine is available.
1330 d_localtime_r (d_localtime_r.U):
1331 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1332 which indicates to the C program that the localtime_r()
1333 routine is available.
1335 d_localtime_r_needs_tzset (d_localtime_r.U):
1336 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1337 symbol, which makes us call tzset before localtime_r()
1339 d_locconv (d_locconv.U):
1340 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1341 available for numeric and monetary formatting conventions.
1343 d_lockf (d_lockf.U):
1344 This variable conditionally defines HAS_LOCKF if lockf() is
1345 available to do file locking.
1347 d_longdbl (d_longdbl.U):
1348 This variable conditionally defines HAS_LONG_DOUBLE if
1349 the long double type is supported.
1351 d_longlong (d_longlong.U):
1352 This variable conditionally defines HAS_LONG_LONG if
1353 the long long type is supported.
1355 d_lseekproto (d_lseekproto.U):
1356 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1357 which indicates to the C program that the system provides
1358 a prototype for the lseek() function. Otherwise, it is
1359 up to the program to supply one.
1361 d_lstat (d_lstat.U):
1362 This variable conditionally defines HAS_LSTAT if lstat() is
1363 available to do file stats on symbolic links.
1365 d_madvise (d_madvise.U):
1366 This variable conditionally defines HAS_MADVISE if madvise() is
1367 available to map a file into memory.
1369 d_malloc_good_size (d_malloc_size.U):
1370 This symbol, if defined, indicates that the malloc_good_size
1371 routine is available for use.
1373 d_malloc_size (d_malloc_size.U):
1374 This symbol, if defined, indicates that the malloc_size
1375 routine is available for use.
1377 d_mblen (d_mblen.U):
1378 This variable conditionally defines the HAS_MBLEN symbol, which
1379 indicates to the C program that the mblen() routine is available
1380 to find the number of bytes in a multibye character.
1382 d_mbstowcs (d_mbstowcs.U):
1383 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1384 indicates to the C program that the mbstowcs() routine is available
1385 to convert a multibyte string into a wide character string.
1387 d_mbtowc (d_mbtowc.U):
1388 This variable conditionally defines the HAS_MBTOWC symbol, which
1389 indicates to the C program that the mbtowc() routine is available
1390 to convert multibyte to a wide character.
1392 d_memchr (d_memchr.U):
1393 This variable conditionally defines the HAS_MEMCHR symbol, which
1394 indicates to the C program that the memchr() routine is available
1395 to locate characters within a C string.
1397 d_memcmp (d_memcmp.U):
1398 This variable conditionally defines the HAS_MEMCMP symbol, which
1399 indicates to the C program that the memcmp() routine is available
1400 to compare blocks of memory.
1402 d_memcpy (d_memcpy.U):
1403 This variable conditionally defines the HAS_MEMCPY symbol, which
1404 indicates to the C program that the memcpy() routine is available
1405 to copy blocks of memory.
1407 d_memmove (d_memmove.U):
1408 This variable conditionally defines the HAS_MEMMOVE symbol, which
1409 indicates to the C program that the memmove() routine is available
1410 to copy potentially overlapping blocks of memory.
1412 d_memset (d_memset.U):
1413 This variable conditionally defines the HAS_MEMSET symbol, which
1414 indicates to the C program that the memset() routine is available
1415 to set blocks of memory.
1417 d_mkdir (d_mkdir.U):
1418 This variable conditionally defines the HAS_MKDIR symbol, which
1419 indicates to the C program that the mkdir() routine is available
1420 to create directories..
1422 d_mkdtemp (d_mkdtemp.U):
1423 This variable conditionally defines the HAS_MKDTEMP symbol, which
1424 indicates to the C program that the mkdtemp() routine is available
1425 to exclusively create a uniquely named temporary directory.
1427 d_mkfifo (d_mkfifo.U):
1428 This variable conditionally defines the HAS_MKFIFO symbol, which
1429 indicates to the C program that the mkfifo() routine is available.
1431 d_mkstemp (d_mkstemp.U):
1432 This variable conditionally defines the HAS_MKSTEMP symbol, which
1433 indicates to the C program that the mkstemp() routine is available
1434 to exclusively create and open a uniquely named temporary file.
1436 d_mkstemps (d_mkstemps.U):
1437 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1438 indicates to the C program that the mkstemps() routine is available
1439 to exclusively create and open a uniquely named (with a suffix)
1442 d_mktime (d_mktime.U):
1443 This variable conditionally defines the HAS_MKTIME symbol, which
1444 indicates to the C program that the mktime() routine is available.
1446 d_mktime64 (d_timefuncs64.U):
1447 This variable conditionally defines the HAS_MKTIME64 symbol, which
1448 indicates to the C program that the mktime64 () routine is available.
1451 This variable conditionally defines HAS_MMAP if mmap() is
1452 available to map a file into memory.
1454 d_modfl (d_modfl.U):
1455 This variable conditionally defines the HAS_MODFL symbol, which
1456 indicates to the C program that the modfl() routine is available.
1458 d_modfl_pow32_bug (d_modfl.U):
1459 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1460 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1461 For example from 4294967303.150000 one would get 4294967302.000000
1462 and 1.150000. The bug has been seen in certain versions of glibc,
1463 release 2.2.2 is known to be okay.
1465 d_modflproto (d_modfl.U):
1466 This symbol, if defined, indicates that the system provides
1467 a prototype for the modfl() function. Otherwise, it is up
1468 to the program to supply one. C99 says it should be
1469 long double modfl(long double, long double *);
1471 d_mprotect (d_mprotect.U):
1472 This variable conditionally defines HAS_MPROTECT if mprotect() is
1473 available to modify the access protection of a memory mapped file.
1476 This variable conditionally defines the HAS_MSG symbol, which
1477 indicates that the entire msg*(2) library is present.
1479 d_msg_ctrunc (d_socket.U):
1480 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1481 which indicates that the MSG_CTRUNC is available. #ifdef is
1482 not enough because it may be an enum, glibc has been known to do this.
1484 d_msg_dontroute (d_socket.U):
1485 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1486 which indicates that the MSG_DONTROUTE is available. #ifdef is
1487 not enough because it may be an enum, glibc has been known to do this.
1489 d_msg_oob (d_socket.U):
1490 This variable conditionally defines the HAS_MSG_OOB symbol,
1491 which indicates that the MSG_OOB is available. #ifdef is
1492 not enough because it may be an enum, glibc has been known to do this.
1494 d_msg_peek (d_socket.U):
1495 This variable conditionally defines the HAS_MSG_PEEK symbol,
1496 which indicates that the MSG_PEEK is available. #ifdef is
1497 not enough because it may be an enum, glibc has been known to do this.
1499 d_msg_proxy (d_socket.U):
1500 This variable conditionally defines the HAS_MSG_PROXY symbol,
1501 which indicates that the MSG_PROXY is available. #ifdef is
1502 not enough because it may be an enum, glibc has been known to do this.
1504 d_msgctl (d_msgctl.U):
1505 This variable conditionally defines the HAS_MSGCTL symbol, which
1506 indicates to the C program that the msgctl() routine is available.
1508 d_msgget (d_msgget.U):
1509 This variable conditionally defines the HAS_MSGGET symbol, which
1510 indicates to the C program that the msgget() routine is available.
1512 d_msghdr_s (d_msghdr_s.U):
1513 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1514 which indicates that the struct msghdr is supported.
1516 d_msgrcv (d_msgrcv.U):
1517 This variable conditionally defines the HAS_MSGRCV symbol, which
1518 indicates to the C program that the msgrcv() routine is available.
1520 d_msgsnd (d_msgsnd.U):
1521 This variable conditionally defines the HAS_MSGSND symbol, which
1522 indicates to the C program that the msgsnd() routine is available.
1524 d_msync (d_msync.U):
1525 This variable conditionally defines HAS_MSYNC if msync() is
1526 available to synchronize a mapped file.
1528 d_munmap (d_munmap.U):
1529 This variable conditionally defines HAS_MUNMAP if munmap() is
1530 available to unmap a region mapped by mmap().
1532 d_mymalloc (mallocsrc.U):
1533 This variable conditionally defines MYMALLOC in case other parts
1534 of the source want to take special action if MYMALLOC is used.
1535 This may include different sorts of profiling or error detection.
1538 This variable conditionally defines the HAS_NDBM symbol, which
1539 indicates that both the ndbm.h include file and an appropriate ndbm
1540 library exist. Consult the different i_*ndbm variables
1541 to find out the actual include location. Sometimes, a system has the
1542 header file but not the library. This variable will only be set if
1543 the system has both.
1545 d_ndbm_h_uses_prototypes (i_ndbm.U):
1546 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1547 which indicates that the ndbm.h include file uses real ANSI C
1548 prototypes instead of K&R style function declarations. K&R style
1549 declarations are unsupported in C++, so the include file requires
1550 special handling when using a C++ compiler and this variable is
1551 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1552 to get the same information for alternative ndbm.h include files.
1555 This variable conditionally defines the HAS_NICE symbol, which
1556 indicates to the C program that the nice() routine is available.
1558 d_nl_langinfo (d_nl_langinfo.U):
1559 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1560 indicates to the C program that the nl_langinfo() routine is available.
1562 d_nv_preserves_uv (perlxv.U):
1563 This variable indicates whether a variable of type nvtype
1564 can preserve all the bits a variable of type uvtype.
1566 d_nv_zero_is_allbits_zero (perlxv.U):
1567 This variable indicates whether a variable of type nvtype
1568 stores 0.0 in memory as all bits zero.
1570 d_off64_t (d_off64_t.U):
1571 This symbol will be defined if the C compiler supports off64_t.
1573 d_old_pthread_create_joinable (d_pthrattrj.U):
1574 This variable conditionally defines pthread_create_joinable.
1575 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1577 d_oldpthreads (usethreads.U):
1578 This variable conditionally defines the OLD_PTHREADS_API symbol,
1579 and indicates that Perl should be built to use the old
1580 draft POSIX threads API. This is only potentially meaningful if
1583 d_oldsock (d_socket.U):
1584 This variable conditionally defines the OLDSOCKET symbol, which
1585 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1587 d_open3 (d_open3.U):
1588 This variable conditionally defines the HAS_OPEN3 manifest constant,
1589 which indicates to the C program that the 3 argument version of
1590 the open(2) function is available.
1592 d_pathconf (d_pathconf.U):
1593 This variable conditionally defines the HAS_PATHCONF symbol, which
1594 indicates to the C program that the pathconf() routine is available
1595 to determine file-system related limits and options associated
1596 with a given filename.
1598 d_pause (d_pause.U):
1599 This variable conditionally defines the HAS_PAUSE symbol, which
1600 indicates to the C program that the pause() routine is available
1601 to suspend a process until a signal is received.
1603 d_perl_otherlibdirs (otherlibdirs.U):
1604 This variable conditionally defines PERL_OTHERLIBDIRS, which
1605 contains a colon-separated set of paths for the perl binary to
1606 include in @INC. See also otherlibdirs.
1608 d_phostname (d_gethname.U):
1609 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1610 contains the shell command which, when fed to popen(), may be
1611 used to derive the host name.
1614 This variable conditionally defines the HAS_PIPE symbol, which
1615 indicates to the C program that the pipe() routine is available
1616 to create an inter-process channel.
1619 This variable conditionally defines the HAS_POLL symbol, which
1620 indicates to the C program that the poll() routine is available
1621 to poll active file descriptors.
1623 d_portable (d_portable.U):
1624 This variable conditionally defines the PORTABLE symbol, which
1625 indicates to the C program that it should not assume that it is
1626 running on the machine it was compiled on.
1628 d_prctl (d_prctl.U):
1629 This variable conditionally defines the HAS_PRCTL symbol, which
1630 indicates to the C program that the prctl() routine is available.
1632 d_prctl_set_name (d_prctl.U):
1633 This variable conditionally defines the HAS_PRCTL_SET_NAME symbol,
1634 which indicates to the C program that the prctl() routine supports
1635 the PR_SET_NAME option.
1637 d_PRId64 (quadfio.U):
1638 This variable conditionally defines the PERL_PRId64 symbol, which
1639 indicates that stdio has a symbol to print 64-bit decimal numbers.
1641 d_PRIeldbl (longdblfio.U):
1642 This variable conditionally defines the PERL_PRIfldbl symbol, which
1643 indicates that stdio has a symbol to print long doubles.
1645 d_PRIEUldbl (longdblfio.U):
1646 This variable conditionally defines the PERL_PRIfldbl symbol, which
1647 indicates that stdio has a symbol to print long doubles.
1648 The 'U' in the name is to separate this from d_PRIeldbl so that even
1649 case-blind systems can see the difference.
1651 d_PRIfldbl (longdblfio.U):
1652 This variable conditionally defines the PERL_PRIfldbl symbol, which
1653 indicates that stdio has a symbol to print long doubles.
1655 d_PRIFUldbl (longdblfio.U):
1656 This variable conditionally defines the PERL_PRIfldbl symbol, which
1657 indicates that stdio has a symbol to print long doubles.
1658 The 'U' in the name is to separate this from d_PRIfldbl so that even
1659 case-blind systems can see the difference.
1661 d_PRIgldbl (longdblfio.U):
1662 This variable conditionally defines the PERL_PRIfldbl symbol, which
1663 indicates that stdio has a symbol to print long doubles.
1665 d_PRIGUldbl (longdblfio.U):
1666 This variable conditionally defines the PERL_PRIfldbl symbol, which
1667 indicates that stdio has a symbol to print long doubles.
1668 The 'U' in the name is to separate this from d_PRIgldbl so that even
1669 case-blind systems can see the difference.
1671 d_PRIi64 (quadfio.U):
1672 This variable conditionally defines the PERL_PRIi64 symbol, which
1673 indicates that stdio has a symbol to print 64-bit decimal numbers.
1675 d_printf_format_null (d_attribut.U):
1676 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
1677 indicates the C compiler allows printf-like formats to be null.
1679 d_PRIo64 (quadfio.U):
1680 This variable conditionally defines the PERL_PRIo64 symbol, which
1681 indicates that stdio has a symbol to print 64-bit octal numbers.
1683 d_PRIu64 (quadfio.U):
1684 This variable conditionally defines the PERL_PRIu64 symbol, which
1685 indicates that stdio has a symbol to print 64-bit unsigned decimal
1688 d_PRIx64 (quadfio.U):
1689 This variable conditionally defines the PERL_PRIx64 symbol, which
1690 indicates that stdio has a symbol to print 64-bit hexadecimal numbers.
1692 d_PRIXU64 (quadfio.U):
1693 This variable conditionally defines the PERL_PRIXU64 symbol, which
1694 indicates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1695 The 'U' in the name is to separate this from d_PRIx64 so that even
1696 case-blind systems can see the difference.
1698 d_procselfexe (d_procselfexe.U):
1699 Defined if $procselfexe is symlink to the absolute
1700 pathname of the executing program.
1702 d_pseudofork (d_vfork.U):
1703 This variable conditionally defines the HAS_PSEUDOFORK symbol,
1704 which indicates that an emulation of the fork routine is available.
1706 d_pthread_atfork (d_pthread_atfork.U):
1707 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1708 which indicates to the C program that the pthread_atfork()
1709 routine is available.
1711 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1712 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1713 pthread_attr_setscope() is available to set the contention scope
1714 attribute of a thread attribute object.
1716 d_pthread_yield (d_pthread_y.U):
1717 This variable conditionally defines the HAS_PTHREAD_YIELD
1718 symbol if the pthread_yield routine is available to yield
1719 the execution of the current thread.
1722 This variable conditionally defines PWAGE, which indicates
1723 that struct passwd contains pw_age.
1725 d_pwchange (i_pwd.U):
1726 This variable conditionally defines PWCHANGE, which indicates
1727 that struct passwd contains pw_change.
1729 d_pwclass (i_pwd.U):
1730 This variable conditionally defines PWCLASS, which indicates
1731 that struct passwd contains pw_class.
1733 d_pwcomment (i_pwd.U):
1734 This variable conditionally defines PWCOMMENT, which indicates
1735 that struct passwd contains pw_comment.
1737 d_pwexpire (i_pwd.U):
1738 This variable conditionally defines PWEXPIRE, which indicates
1739 that struct passwd contains pw_expire.
1741 d_pwgecos (i_pwd.U):
1742 This variable conditionally defines PWGECOS, which indicates
1743 that struct passwd contains pw_gecos.
1745 d_pwpasswd (i_pwd.U):
1746 This variable conditionally defines PWPASSWD, which indicates
1747 that struct passwd contains pw_passwd.
1749 d_pwquota (i_pwd.U):
1750 This variable conditionally defines PWQUOTA, which indicates
1751 that struct passwd contains pw_quota.
1753 d_qgcvt (d_qgcvt.U):
1754 This variable conditionally defines the HAS_QGCVT symbol, which
1755 indicates to the C program that the qgcvt() routine is available.
1757 d_quad (quadtype.U):
1758 This variable, if defined, tells that there's a 64-bit integer type,
1761 d_random_r (d_random_r.U):
1762 This variable conditionally defines the HAS_RANDOM_R symbol,
1763 which indicates to the C program that the random_r()
1764 routine is available.
1766 d_readdir (d_readdir.U):
1767 This variable conditionally defines HAS_READDIR if readdir() is
1768 available to read directory entries.
1770 d_readdir64_r (d_readdir64_r.U):
1771 This variable conditionally defines the HAS_READDIR64_R symbol,
1772 which indicates to the C program that the readdir64_r()
1773 routine is available.
1775 d_readdir_r (d_readdir_r.U):
1776 This variable conditionally defines the HAS_READDIR_R symbol,
1777 which indicates to the C program that the readdir_r()
1778 routine is available.
1780 d_readlink (d_readlink.U):
1781 This variable conditionally defines the HAS_READLINK symbol, which
1782 indicates to the C program that the readlink() routine is available
1783 to read the value of a symbolic link.
1785 d_readv (d_readv.U):
1786 This variable conditionally defines the HAS_READV symbol, which
1787 indicates to the C program that the readv() routine is available.
1789 d_recvmsg (d_recvmsg.U):
1790 This variable conditionally defines the HAS_RECVMSG symbol, which
1791 indicates to the C program that the recvmsg() routine is available.
1793 d_rename (d_rename.U):
1794 This variable conditionally defines the HAS_RENAME symbol, which
1795 indicates to the C program that the rename() routine is available
1798 d_rewinddir (d_readdir.U):
1799 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1802 d_rmdir (d_rmdir.U):
1803 This variable conditionally defines HAS_RMDIR if rmdir() is
1804 available to remove directories.
1806 d_safebcpy (d_safebcpy.U):
1807 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1808 the bcopy() routine can do overlapping copies. Normally, you
1809 should probably use memmove().
1811 d_safemcpy (d_safemcpy.U):
1812 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1813 the memcpy() routine can do overlapping copies.
1814 For overlapping copies, memmove() should be used, if available.
1816 d_sanemcmp (d_sanemcmp.U):
1817 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1818 the memcpy() routine is available and can be used to compare relative
1819 magnitudes of chars with their high bits set.
1821 d_sbrkproto (d_sbrkproto.U):
1822 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1823 which indicates to the C program that the system provides
1824 a prototype for the sbrk() function. Otherwise, it is
1825 up to the program to supply one.
1827 d_scalbnl (d_scalbnl.U):
1828 This variable conditionally defines the HAS_SCALBNL symbol, which
1829 indicates to the C program that the scalbnl() routine is available.
1830 If ilogbl is also present we can emulate frexpl.
1832 d_sched_yield (d_pthread_y.U):
1833 This variable conditionally defines the HAS_SCHED_YIELD
1834 symbol if the sched_yield routine is available to yield
1835 the execution of the current thread.
1837 d_scm_rights (d_socket.U):
1838 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1839 which indicates that the SCM_RIGHTS is available. #ifdef is
1840 not enough because it may be an enum, glibc has been known to do this.
1842 d_SCNfldbl (longdblfio.U):
1843 This variable conditionally defines the PERL_PRIfldbl symbol, which
1844 indicates that stdio has a symbol to scan long doubles.
1846 d_seekdir (d_readdir.U):
1847 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1850 d_select (d_select.U):
1851 This variable conditionally defines HAS_SELECT if select() is
1852 available to select active file descriptors. A <sys/time.h>
1853 inclusion may be necessary for the timeout field.
1856 This variable conditionally defines the HAS_SEM symbol, which
1857 indicates that the entire sem*(2) library is present.
1859 d_semctl (d_semctl.U):
1860 This variable conditionally defines the HAS_SEMCTL symbol, which
1861 indicates to the C program that the semctl() routine is available.
1863 d_semctl_semid_ds (d_union_semun.U):
1864 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1865 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1867 d_semctl_semun (d_union_semun.U):
1868 This variable conditionally defines USE_SEMCTL_SEMUN, which
1869 indicates that union semun is to be used for semctl IPC_STAT.
1871 d_semget (d_semget.U):
1872 This variable conditionally defines the HAS_SEMGET symbol, which
1873 indicates to the C program that the semget() routine is available.
1875 d_semop (d_semop.U):
1876 This variable conditionally defines the HAS_SEMOP symbol, which
1877 indicates to the C program that the semop() routine is available.
1879 d_sendmsg (d_sendmsg.U):
1880 This variable conditionally defines the HAS_SENDMSG symbol, which
1881 indicates to the C program that the sendmsg() routine is available.
1883 d_setegid (d_setegid.U):
1884 This variable conditionally defines the HAS_SETEGID symbol, which
1885 indicates to the C program that the setegid() routine is available
1886 to change the effective gid of the current program.
1888 d_seteuid (d_seteuid.U):
1889 This variable conditionally defines the HAS_SETEUID symbol, which
1890 indicates to the C program that the seteuid() routine is available
1891 to change the effective uid of the current program.
1893 d_setgrent (d_setgrent.U):
1894 This variable conditionally defines the HAS_SETGRENT symbol, which
1895 indicates to the C program that the setgrent() routine is available
1896 for initializing sequential access to the group database.
1898 d_setgrent_r (d_setgrent_r.U):
1899 This variable conditionally defines the HAS_SETGRENT_R symbol,
1900 which indicates to the C program that the setgrent_r()
1901 routine is available.
1903 d_setgrps (d_setgrps.U):
1904 This variable conditionally defines the HAS_SETGROUPS symbol, which
1905 indicates to the C program that the setgroups() routine is available
1906 to set the list of process groups.
1908 d_sethent (d_sethent.U):
1909 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1912 d_sethostent_r (d_sethostent_r.U):
1913 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1914 which indicates to the C program that the sethostent_r()
1915 routine is available.
1917 d_setitimer (d_setitimer.U):
1918 This variable conditionally defines the HAS_SETITIMER symbol, which
1919 indicates to the C program that the setitimer() routine is available.
1921 d_setlinebuf (d_setlnbuf.U):
1922 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1923 indicates to the C program that the setlinebuf() routine is available
1924 to change stderr or stdout from block-buffered or unbuffered to a
1927 d_setlocale (d_setlocale.U):
1928 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1929 available to handle locale-specific ctype implementations.
1931 d_setlocale_r (d_setlocale_r.U):
1932 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1933 which indicates to the C program that the setlocale_r()
1934 routine is available.
1936 d_setnent (d_setnent.U):
1937 This variable conditionally defines HAS_SETNETENT if setnetent() is
1940 d_setnetent_r (d_setnetent_r.U):
1941 This variable conditionally defines the HAS_SETNETENT_R symbol,
1942 which indicates to the C program that the setnetent_r()
1943 routine is available.
1945 d_setpent (d_setpent.U):
1946 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1949 d_setpgid (d_setpgid.U):
1950 This variable conditionally defines the HAS_SETPGID symbol if the
1951 setpgid(pid, gpid) function is available to set process group ID.
1953 d_setpgrp (d_setpgrp.U):
1954 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1955 available to set the current process group.
1957 d_setpgrp2 (d_setpgrp2.U):
1958 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1959 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1960 is available to set the current process group.
1962 d_setprior (d_setprior.U):
1963 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1964 is available to set a process's priority.
1966 d_setproctitle (d_setproctitle.U):
1967 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1968 which indicates to the C program that the setproctitle() routine
1971 d_setprotoent_r (d_setprotoent_r.U):
1972 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1973 which indicates to the C program that the setprotoent_r()
1974 routine is available.
1976 d_setpwent (d_setpwent.U):
1977 This variable conditionally defines the HAS_SETPWENT symbol, which
1978 indicates to the C program that the setpwent() routine is available
1979 for initializing sequential access to the passwd database.
1981 d_setpwent_r (d_setpwent_r.U):
1982 This variable conditionally defines the HAS_SETPWENT_R symbol,
1983 which indicates to the C program that the setpwent_r()
1984 routine is available.
1986 d_setregid (d_setregid.U):
1987 This variable conditionally defines HAS_SETREGID if setregid() is
1988 available to change the real and effective gid of the current
1991 d_setresgid (d_setregid.U):
1992 This variable conditionally defines HAS_SETRESGID if setresgid() is
1993 available to change the real, effective and saved gid of the current
1996 d_setresuid (d_setreuid.U):
1997 This variable conditionally defines HAS_SETREUID if setresuid() is
1998 available to change the real, effective and saved uid of the current
2001 d_setreuid (d_setreuid.U):
2002 This variable conditionally defines HAS_SETREUID if setreuid() is
2003 available to change the real and effective uid of the current
2006 d_setrgid (d_setrgid.U):
2007 This variable conditionally defines the HAS_SETRGID symbol, which
2008 indicates to the C program that the setrgid() routine is available
2009 to change the real gid of the current program.
2011 d_setruid (d_setruid.U):
2012 This variable conditionally defines the HAS_SETRUID symbol, which
2013 indicates to the C program that the setruid() routine is available
2014 to change the real uid of the current program.
2016 d_setsent (d_setsent.U):
2017 This variable conditionally defines HAS_SETSERVENT if setservent() is
2020 d_setservent_r (d_setservent_r.U):
2021 This variable conditionally defines the HAS_SETSERVENT_R symbol,
2022 which indicates to the C program that the setservent_r()
2023 routine is available.
2025 d_setsid (d_setsid.U):
2026 This variable conditionally defines HAS_SETSID if setsid() is
2027 available to set the process group ID.
2029 d_setvbuf (d_setvbuf.U):
2030 This variable conditionally defines the HAS_SETVBUF symbol, which
2031 indicates to the C program that the setvbuf() routine is available
2032 to change buffering on an open stdio stream.
2035 This variable conditionally defines the USE_SFIO symbol,
2036 and indicates whether sfio is available (and should be used).
2039 This variable conditionally defines the HAS_SHM symbol, which
2040 indicates that the entire shm*(2) library is present.
2042 d_shmat (d_shmat.U):
2043 This variable conditionally defines the HAS_SHMAT symbol, which
2044 indicates to the C program that the shmat() routine is available.
2046 d_shmatprototype (d_shmat.U):
2047 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
2048 symbol, which indicates that sys/shm.h has a prototype for
2051 d_shmctl (d_shmctl.U):
2052 This variable conditionally defines the HAS_SHMCTL symbol, which
2053 indicates to the C program that the shmctl() routine is available.
2055 d_shmdt (d_shmdt.U):
2056 This variable conditionally defines the HAS_SHMDT symbol, which
2057 indicates to the C program that the shmdt() routine is available.
2059 d_shmget (d_shmget.U):
2060 This variable conditionally defines the HAS_SHMGET symbol, which
2061 indicates to the C program that the shmget() routine is available.
2063 d_sigaction (d_sigaction.U):
2064 This variable conditionally defines the HAS_SIGACTION symbol, which
2065 indicates that the Vr4 sigaction() routine is available.
2067 d_signbit (d_signbit.U):
2068 This variable conditionally defines the HAS_SIGNBIT symbol, which
2069 indicates to the C program that the signbit() routine is available
2070 and safe to use with perl's intern NV type.
2072 d_sigprocmask (d_sigprocmask.U):
2073 This variable conditionally defines HAS_SIGPROCMASK
2074 if sigprocmask() is available to examine or change the signal mask
2075 of the calling process.
2077 d_sigsetjmp (d_sigsetjmp.U):
2078 This variable conditionally defines the HAS_SIGSETJMP symbol,
2079 which indicates that the sigsetjmp() routine is available to
2080 call setjmp() and optionally save the process's signal mask.
2082 d_sin6_scope_id (d_socket.U):
2083 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol, which
2084 indicates that a struct sockaddr_in6 structure has the sin6_scope_id
2087 d_sitearch (sitearch.U):
2088 This variable conditionally defines SITEARCH to hold the pathname
2089 of architecture-dependent library files for $package. If
2090 $sitearch is the same as $archlib, then this is set to undef.
2092 d_snprintf (d_snprintf.U):
2093 This variable conditionally defines the HAS_SNPRINTF symbol, which
2094 indicates to the C program that the snprintf () library function
2097 d_sockaddr_in6 (d_socket.U):
2098 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol, which
2099 indicates the availability of a struct sockaddr_in6.
2101 d_sockaddr_sa_len (d_socket.U):
2102 This variable conditionally defines the HAS_SOCKADDR_SA_LEN symbol,
2103 which indicates that a struct sockaddr structure has the sa_len
2106 d_sockatmark (d_sockatmark.U):
2107 This variable conditionally defines the HAS_SOCKATMARK symbol, which
2108 indicates to the C program that the sockatmark() routine is available.
2110 d_sockatmarkproto (d_sockatmarkproto.U):
2111 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
2112 which indicates to the C program that the system provides
2113 a prototype for the sockatmark() function. Otherwise, it is
2114 up to the program to supply one.
2116 d_socket (d_socket.U):
2117 This variable conditionally defines HAS_SOCKET, which indicates
2118 that the BSD socket interface is supported.
2120 d_socklen_t (d_socklen_t.U):
2121 This symbol will be defined if the C compiler supports socklen_t.
2123 d_sockpair (d_socket.U):
2124 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
2125 indicates that the BSD socketpair() is supported.
2127 d_socks5_init (d_socks5_init.U):
2128 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
2129 indicates to the C program that the socks5_init() routine is available.
2131 d_sprintf_returns_strlen (d_sprintf_len.U):
2132 This variable defines whether sprintf returns the length of the string
2133 (as per the ANSI spec). Some C libraries retain compatibility with
2134 pre-ANSI C and return a pointer to the passed in buffer; for these
2135 this variable will be undef.
2137 d_sqrtl (d_sqrtl.U):
2138 This variable conditionally defines the HAS_SQRTL symbol, which
2139 indicates to the C program that the sqrtl() routine is available.
2141 d_srand48_r (d_srand48_r.U):
2142 This variable conditionally defines the HAS_SRAND48_R symbol,
2143 which indicates to the C program that the srand48_r()
2144 routine is available.
2146 d_srandom_r (d_srandom_r.U):
2147 This variable conditionally defines the HAS_SRANDOM_R symbol,
2148 which indicates to the C program that the srandom_r()
2149 routine is available.
2151 d_sresgproto (d_sresgproto.U):
2152 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
2153 which indicates to the C program that the system provides
2154 a prototype for the setresgid() function. Otherwise, it is
2155 up to the program to supply one.
2157 d_sresuproto (d_sresuproto.U):
2158 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2159 which indicates to the C program that the system provides
2160 a prototype for the setresuid() function. Otherwise, it is
2161 up to the program to supply one.
2163 d_statblks (d_statblks.U):
2164 This variable conditionally defines USE_STAT_BLOCKS
2165 if this system has a stat structure declaring
2166 st_blksize and st_blocks.
2168 d_statfs_f_flags (d_statfs_f_flags.U):
2169 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2170 symbol, which indicates to struct statfs from has f_flags member.
2171 This kind of struct statfs is coming from sys/mount.h (BSD),
2172 not from sys/statfs.h (SYSV).
2174 d_statfs_s (d_statfs_s.U):
2175 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2176 which indicates that the struct statfs is supported.
2178 d_static_inline (d_static_inline.U):
2179 This variable conditionally defines the HAS_STATIC_INLINE symbol,
2180 which indicates that the C compiler supports C99-style static
2181 inline. That is, the function can't be called from another
2184 d_statvfs (d_statvfs.U):
2185 This variable conditionally defines the HAS_STATVFS symbol, which
2186 indicates to the C program that the statvfs() routine is available.
2188 d_stdio_cnt_lval (d_stdstdio.U):
2189 This variable conditionally defines STDIO_CNT_LVALUE if the
2190 FILE_cnt macro can be used as an lvalue.
2192 d_stdio_ptr_lval (d_stdstdio.U):
2193 This variable conditionally defines STDIO_PTR_LVALUE if the
2194 FILE_ptr macro can be used as an lvalue.
2196 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2197 This symbol is defined if using the FILE_ptr macro as an lvalue
2198 to increase the pointer by n leaves File_cnt(fp) unchanged.
2200 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2201 This symbol is defined if using the FILE_ptr macro as an lvalue
2202 to increase the pointer by n has the side effect of decreasing the
2203 value of File_cnt(fp) by n.
2205 d_stdio_stream_array (stdio_streams.U):
2206 This variable tells whether there is an array holding
2209 d_stdiobase (d_stdstdio.U):
2210 This variable conditionally defines USE_STDIO_BASE if this system
2211 has a FILE structure declaring a usable _base field (or equivalent)
2214 d_stdstdio (d_stdstdio.U):
2215 This variable conditionally defines USE_STDIO_PTR if this system
2216 has a FILE structure declaring usable _ptr and _cnt fields (or
2217 equivalent) in stdio.h.
2219 d_strchr (d_strchr.U):
2220 This variable conditionally defines HAS_STRCHR if strchr() and
2221 strrchr() are available for string searching.
2223 d_strcoll (d_strcoll.U):
2224 This variable conditionally defines HAS_STRCOLL if strcoll() is
2225 available to compare strings using collating information.
2227 d_strctcpy (d_strctcpy.U):
2228 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2229 indicates to the C program that this C compiler knows how to copy
2232 d_strerrm (d_strerror.U):
2233 This variable holds what Strerrr is defined as to translate an error
2234 code condition into an error message string. It could be 'strerror'
2235 or a more complex macro emulating strrror with sys_errlist[], or the
2236 "unknown" string when both strerror and sys_errlist are missing.
2238 d_strerror (d_strerror.U):
2239 This variable conditionally defines HAS_STRERROR if strerror() is
2240 available to translate error numbers to strings.
2242 d_strerror_r (d_strerror_r.U):
2243 This variable conditionally defines the HAS_STRERROR_R symbol,
2244 which indicates to the C program that the strerror_r()
2245 routine is available.
2247 d_strftime (d_strftime.U):
2248 This variable conditionally defines the HAS_STRFTIME symbol, which
2249 indicates to the C program that the strftime() routine is available.
2251 d_strlcat (d_strlcat.U):
2252 This variable conditionally defines the HAS_STRLCAT symbol, which
2253 indicates to the C program that the strlcat () routine is available.
2255 d_strlcpy (d_strlcpy.U):
2256 This variable conditionally defines the HAS_STRLCPY symbol, which
2257 indicates to the C program that the strlcpy () routine is available.
2259 d_strtod (d_strtod.U):
2260 This variable conditionally defines the HAS_STRTOD symbol, which
2261 indicates to the C program that the strtod() routine is available
2262 to provide better numeric string conversion than atof().
2264 d_strtol (d_strtol.U):
2265 This variable conditionally defines the HAS_STRTOL symbol, which
2266 indicates to the C program that the strtol() routine is available
2267 to provide better numeric string conversion than atoi() and friends.
2269 d_strtold (d_strtold.U):
2270 This variable conditionally defines the HAS_STRTOLD symbol, which
2271 indicates to the C program that the strtold() routine is available.
2273 d_strtoll (d_strtoll.U):
2274 This variable conditionally defines the HAS_STRTOLL symbol, which
2275 indicates to the C program that the strtoll() routine is available.
2277 d_strtoq (d_strtoq.U):
2278 This variable conditionally defines the HAS_STRTOQ symbol, which
2279 indicates to the C program that the strtoq() routine is available.
2281 d_strtoul (d_strtoul.U):
2282 This variable conditionally defines the HAS_STRTOUL symbol, which
2283 indicates to the C program that the strtoul() routine is available
2284 to provide conversion of strings to unsigned long.
2286 d_strtoull (d_strtoull.U):
2287 This variable conditionally defines the HAS_STRTOULL symbol, which
2288 indicates to the C program that the strtoull() routine is available.
2290 d_strtouq (d_strtouq.U):
2291 This variable conditionally defines the HAS_STRTOUQ symbol, which
2292 indicates to the C program that the strtouq() routine is available.
2294 d_strxfrm (d_strxfrm.U):
2295 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2296 available to transform strings.
2298 d_suidsafe (d_dosuid.U):
2299 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2300 if setuid scripts can be secure. This test looks in /dev/fd/.
2302 d_symlink (d_symlink.U):
2303 This variable conditionally defines the HAS_SYMLINK symbol, which
2304 indicates to the C program that the symlink() routine is available
2305 to create symbolic links.
2307 d_syscall (d_syscall.U):
2308 This variable conditionally defines HAS_SYSCALL if syscall() is
2309 available call arbitrary system calls.
2311 d_syscallproto (d_syscallproto.U):
2312 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2313 which indicates to the C program that the system provides
2314 a prototype for the syscall() function. Otherwise, it is
2315 up to the program to supply one.
2317 d_sysconf (d_sysconf.U):
2318 This variable conditionally defines the HAS_SYSCONF symbol, which
2319 indicates to the C program that the sysconf() routine is available
2320 to determine system related limits and options.
2322 d_sysernlst (d_strerror.U):
2323 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2324 is available to translate error numbers to the symbolic name.
2326 d_syserrlst (d_strerror.U):
2327 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2328 available to translate error numbers to strings.
2330 d_system (d_system.U):
2331 This variable conditionally defines HAS_SYSTEM if system() is
2332 available to issue a shell command.
2334 d_tcgetpgrp (d_tcgtpgrp.U):
2335 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2336 indicates to the C program that the tcgetpgrp() routine is available.
2337 to get foreground process group ID.
2339 d_tcsetpgrp (d_tcstpgrp.U):
2340 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2341 indicates to the C program that the tcsetpgrp() routine is available
2342 to set foreground process group ID.
2344 d_telldir (d_readdir.U):
2345 This variable conditionally defines HAS_TELLDIR if telldir() is
2348 d_telldirproto (d_telldirproto.U):
2349 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2350 which indicates to the C program that the system provides
2351 a prototype for the telldir() function. Otherwise, it is
2352 up to the program to supply one.
2355 This variable conditionally defines the HAS_TIME symbol, which indicates
2356 that the time() routine exists. The time() routine is normally
2357 provided on UNIX systems.
2359 d_timegm (d_timegm.U):
2360 This variable conditionally defines the HAS_TIMEGM symbol, which
2361 indicates to the C program that the timegm () routine is available.
2363 d_times (d_times.U):
2364 This variable conditionally defines the HAS_TIMES symbol, which indicates
2365 that the times() routine exists. The times() routine is normally
2366 provided on UNIX systems. You may have to include <sys/times.h>.
2368 d_tm_tm_gmtoff (i_time.U):
2369 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2370 indicates to the C program that the struct tm has the tm_gmtoff field.
2372 d_tm_tm_zone (i_time.U):
2373 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2374 indicates to the C program that the struct tm has the tm_zone field.
2376 d_tmpnam_r (d_tmpnam_r.U):
2377 This variable conditionally defines the HAS_TMPNAM_R symbol,
2378 which indicates to the C program that the tmpnam_r()
2379 routine is available.
2381 d_truncate (d_truncate.U):
2382 This variable conditionally defines HAS_TRUNCATE if truncate() is
2383 available to truncate files.
2385 d_ttyname_r (d_ttyname_r.U):
2386 This variable conditionally defines the HAS_TTYNAME_R symbol,
2387 which indicates to the C program that the ttyname_r()
2388 routine is available.
2390 d_tzname (d_tzname.U):
2391 This variable conditionally defines HAS_TZNAME if tzname[] is
2392 available to access timezone names.
2394 d_u32align (d_u32align.U):
2395 This variable tells whether you must access character data
2396 through U32-aligned pointers.
2398 d_ualarm (d_ualarm.U):
2399 This variable conditionally defines the HAS_UALARM symbol, which
2400 indicates to the C program that the ualarm() routine is available.
2402 d_umask (d_umask.U):
2403 This variable conditionally defines the HAS_UMASK symbol, which
2404 indicates to the C program that the umask() routine is available.
2405 to set and get the value of the file creation mask.
2407 d_uname (d_gethname.U):
2408 This variable conditionally defines the HAS_UNAME symbol, which
2409 indicates to the C program that the uname() routine may be
2410 used to derive the host name.
2412 d_union_semun (d_union_semun.U):
2413 This variable conditionally defines HAS_UNION_SEMUN if the
2414 union semun is defined by including <sys/sem.h>.
2416 d_unordered (d_unordered.U):
2417 This variable conditionally defines the HAS_UNORDERED symbol, which
2418 indicates to the C program that the unordered() routine is available.
2420 d_unsetenv (d_unsetenv.U):
2421 This variable conditionally defines the HAS_UNSETENV symbol, which
2422 indicates to the C program that the unsetenv () routine is available.
2424 d_usleep (d_usleep.U):
2425 This variable conditionally defines HAS_USLEEP if usleep() is
2426 available to do high granularity sleeps.
2428 d_usleepproto (d_usleepproto.U):
2429 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2430 which indicates to the C program that the system provides
2431 a prototype for the usleep() function. Otherwise, it is
2432 up to the program to supply one.
2434 d_ustat (d_ustat.U):
2435 This variable conditionally defines HAS_USTAT if ustat() is
2436 available to query file system statistics by dev_t.
2438 d_vendorarch (vendorarch.U):
2439 This variable conditionally defined PERL_VENDORARCH.
2441 d_vendorbin (vendorbin.U):
2442 This variable conditionally defines PERL_VENDORBIN.
2444 d_vendorlib (vendorlib.U):
2445 This variable conditionally defines PERL_VENDORLIB.
2447 d_vendorscript (vendorscript.U):
2448 This variable conditionally defines PERL_VENDORSCRIPT.
2450 d_vfork (d_vfork.U):
2451 This variable conditionally defines the HAS_VFORK symbol, which
2452 indicates the vfork() routine is available.
2454 d_void_closedir (d_closedir.U):
2455 This variable conditionally defines VOID_CLOSEDIR if closedir()
2456 does not return a value.
2458 d_voidsig (d_voidsig.U):
2459 This variable conditionally defines VOIDSIG if this system
2460 declares "void (*signal(...))()" in signal.h. The old way was to
2461 declare it as "int (*signal(...))()".
2463 d_voidtty (i_sysioctl.U):
2464 This variable conditionally defines USE_IOCNOTTY to indicate that the
2465 ioctl() call with TIOCNOTTY should be used to void tty association.
2466 Otherwise (on USG probably), it is enough to close the standard file
2467 descriptors and do a setpgrp().
2469 d_volatile (d_volatile.U):
2470 This variable conditionally defines the HASVOLATILE symbol, which
2471 indicates to the C program that this C compiler knows about the
2472 volatile declaration.
2474 d_vprintf (d_vprintf.U):
2475 This variable conditionally defines the HAS_VPRINTF symbol, which
2476 indicates to the C program that the vprintf() routine is available
2477 to printf with a pointer to an argument list.
2479 d_vsnprintf (d_snprintf.U):
2480 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2481 indicates to the C program that the vsnprintf () library function
2484 d_wait4 (d_wait4.U):
2485 This variable conditionally defines the HAS_WAIT4 symbol, which
2486 indicates the wait4() routine is available.
2488 d_waitpid (d_waitpid.U):
2489 This variable conditionally defines HAS_WAITPID if waitpid() is
2490 available to wait for child process.
2492 d_wcstombs (d_wcstombs.U):
2493 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2494 indicates to the C program that the wcstombs() routine is available
2495 to convert wide character strings to multibyte strings.
2497 d_wctomb (d_wctomb.U):
2498 This variable conditionally defines the HAS_WCTOMB symbol, which
2499 indicates to the C program that the wctomb() routine is available
2500 to convert a wide character to a multibyte.
2502 d_writev (d_writev.U):
2503 This variable conditionally defines the HAS_WRITEV symbol, which
2504 indicates to the C program that the writev() routine is available.
2507 This variable conditionally defines the symbol XENIX, which alerts
2508 the C program that it runs under Xenix.
2511 This variable is used internally by Configure to determine the
2512 full pathname (if any) of the date program. After Configure runs,
2513 the value is reset to a plain "date" and is not useful.
2515 db_hashtype (i_db.U):
2516 This variable contains the type of the hash structure element
2517 in the <db.h> header file. In older versions of DB, it was
2518 int, while in newer ones it is u_int32_t.
2520 db_prefixtype (i_db.U):
2521 This variable contains the type of the prefix structure element
2522 in the <db.h> header file. In older versions of DB, it was
2523 int, while in newer ones it is size_t.
2525 db_version_major (i_db.U):
2526 This variable contains the major version number of
2527 Berkeley DB found in the <db.h> header file.
2529 db_version_minor (i_db.U):
2530 This variable contains the minor version number of
2531 Berkeley DB found in the <db.h> header file.
2532 For DB version 1 this is always 0.
2534 db_version_patch (i_db.U):
2535 This variable contains the patch version number of
2536 Berkeley DB found in the <db.h> header file.
2537 For DB version 1 this is always 0.
2539 defvoidused (voidflags.U):
2540 This variable contains the default value of the VOIDUSED symbol (15).
2542 direntrytype (i_dirent.U):
2543 This symbol is set to 'struct direct' or 'struct dirent' depending on
2544 whether dirent is available or not. You should use this pseudo type to
2545 portably declare your directory entries.
2548 This variable contains the extension that is to be used for the
2549 dynamically loaded modules that perl generaties.
2552 This variable contains the name of the dynamic loading file that
2553 will be used with the package.
2555 doublesize (doublesize.U):
2556 This variable contains the value of the DOUBLESIZE symbol, which
2557 indicates to the C program how many bytes there are in a double.
2559 drand01 (randfunc.U):
2560 Indicates the macro to be used to generate normalized
2561 random numbers. Uses randfunc, often divided by
2562 (double) (((unsigned long) 1 << randbits)) in order to
2563 normalize the result.
2564 In C programs, the macro 'Drand01' is mapped to drand01.
2566 drand48_r_proto (d_drand48_r.U):
2567 This variable encodes the prototype of drand48_r.
2568 It is zero if d_drand48_r is undef, and one of the
2569 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2572 dtrace (usedtrace.U):
2573 This variable holds the location of the dtrace executable.
2575 dynamic_ext (Extensions.U):
2576 This variable holds a list of XS extension files we want to
2577 link dynamically into the package. It is used by Makefile.
2579 eagain (nblock_io.U):
2580 This variable bears the symbolic errno code set by read() when no
2581 data is present on the file and non-blocking I/O was enabled (otherwise,
2582 read() blocks naturally).
2585 This variable conditionally defines EBCDIC if this
2586 system uses EBCDIC encoding. Among other things, this
2587 means that the character ranges are not contiguous.
2591 This variable is used internally by Configure to determine the
2592 full pathname (if any) of the echo program. After Configure runs,
2593 the value is reset to a plain "echo" and is not useful.
2596 This variable is used internally by Configure to determine the
2597 full pathname (if any) of the egrep program. After Configure runs,
2598 the value is reset to a plain "egrep" and is not useful.
2601 This variable is defined but not used by Configure.
2602 The value is the empty string and is not useful.
2604 endgrent_r_proto (d_endgrent_r.U):
2605 This variable encodes the prototype of endgrent_r.
2606 It is zero if d_endgrent_r is undef, and one of the
2607 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2610 endhostent_r_proto (d_endhostent_r.U):
2611 This variable encodes the prototype of endhostent_r.
2612 It is zero if d_endhostent_r is undef, and one of the
2613 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2616 endnetent_r_proto (d_endnetent_r.U):
2617 This variable encodes the prototype of endnetent_r.
2618 It is zero if d_endnetent_r is undef, and one of the
2619 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2622 endprotoent_r_proto (d_endprotoent_r.U):
2623 This variable encodes the prototype of endprotoent_r.
2624 It is zero if d_endprotoent_r is undef, and one of the
2625 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2628 endpwent_r_proto (d_endpwent_r.U):
2629 This variable encodes the prototype of endpwent_r.
2630 It is zero if d_endpwent_r is undef, and one of the
2631 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2634 endservent_r_proto (d_endservent_r.U):
2635 This variable encodes the prototype of endservent_r.
2636 It is zero if d_endservent_r is undef, and one of the
2637 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2641 When running under Eunice this variable contains a command which will
2642 convert a shell script to the proper form of text file for it to be
2643 executable by the shell. On other systems it is a no-op.
2646 This is an old synonym for _exe.
2649 This variable is used internally by Configure to determine the
2650 full pathname (if any) of the expr program. After Configure runs,
2651 the value is reset to a plain "expr" and is not useful.
2653 extensions (Extensions.U):
2654 This variable holds a list of all extension files (both XS and
2655 non-xs linked into the package. It is propagated to Config.pm
2656 and is typically used to test whether a particular extension
2660 ANSI C requires 'extern' where C++ requires 'extern "C"'. This
2661 variable can be used in Configure to do the right thing.
2664 This variable holds a list of extra modules to install.
2666 fflushall (fflushall.U):
2667 This symbol, if defined, tells that to flush
2668 all pending stdio output one must loop through all
2669 the stdio file handles stored in an array and fflush them.
2670 Note that if fflushNULL is defined, fflushall will not
2671 even be probed for and will be left undefined.
2673 fflushNULL (fflushall.U):
2674 This symbol, if defined, tells that fflush(NULL) does flush
2675 all pending stdio output.
2678 This variable is defined but not used by Configure.
2679 The value is the empty string and is not useful.
2681 firstmakefile (Unix.U):
2682 This variable defines the first file searched by make. On unix,
2683 it is makefile (then Makefile). On case-insensitive systems,
2684 it might be something else. This is only used to deal with
2685 convoluted make depend tricks.
2688 This variable is defined but not used by Configure.
2689 The value is the empty string and is not useful.
2691 fpossize (fpossize.U):
2692 This variable contains the size of a fpostype in bytes.
2694 fpostype (fpostype.U):
2695 This variable defines Fpos_t to be something like fpos_t, long,
2696 uint, or whatever type is used to declare file positions in libc.
2698 freetype (mallocsrc.U):
2699 This variable contains the return type of free(). It is usually
2700 void, but occasionally int.
2703 This variable contains the command used by Configure
2704 to copy files from the target host. Useful and available
2705 only during Perl build.
2706 The string ':' if not cross-compiling.
2709 This variable contains the full pathname to 'ar', whether or
2710 not the user has specified 'portability'. This is only used
2714 This variable contains the full pathname to 'csh', whether or
2715 not the user has specified 'portability'. This is only used
2716 in the compiled C program, and we assume that all systems which
2717 can share this executable will have the same full pathname to
2720 full_sed (Loc_sed.U):
2721 This variable contains the full pathname to 'sed', whether or
2722 not the user has specified 'portability'. This is only used
2723 in the compiled C program, and we assume that all systems which
2724 can share this executable will have the same full pathname to
2727 gccansipedantic (gccvers.U):
2728 If GNU cc (gcc) is used, this variable will enable (if set) the
2729 -ansi and -pedantic ccflags for building core files (through
2730 cflags script). (See Porting/pumpkin.pod for full description).
2732 gccosandvers (gccvers.U):
2733 If GNU cc (gcc) is used, this variable holds the operating system
2734 and version used to compile gcc. It is set to '' if not gcc,
2735 or if nothing useful can be parsed as the os version.
2737 gccversion (gccvers.U):
2738 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2739 indicate whether the compiler is version 1 or 2. This is used in
2740 setting some of the default cflags. It is set to '' if not gcc.
2742 getgrent_r_proto (d_getgrent_r.U):
2743 This variable encodes the prototype of getgrent_r.
2744 It is zero if d_getgrent_r is undef, and one of the
2745 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2748 getgrgid_r_proto (d_getgrgid_r.U):
2749 This variable encodes the prototype of getgrgid_r.
2750 It is zero if d_getgrgid_r is undef, and one of the
2751 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2754 getgrnam_r_proto (d_getgrnam_r.U):
2755 This variable encodes the prototype of getgrnam_r.
2756 It is zero if d_getgrnam_r is undef, and one of the
2757 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2760 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2761 This variable encodes the prototype of gethostbyaddr_r.
2762 It is zero if d_gethostbyaddr_r is undef, and one of the
2763 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2766 gethostbyname_r_proto (d_gethostbyname_r.U):
2767 This variable encodes the prototype of gethostbyname_r.
2768 It is zero if d_gethostbyname_r is undef, and one of the
2769 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2772 gethostent_r_proto (d_gethostent_r.U):
2773 This variable encodes the prototype of gethostent_r.
2774 It is zero if d_gethostent_r is undef, and one of the
2775 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2778 getlogin_r_proto (d_getlogin_r.U):
2779 This variable encodes the prototype of getlogin_r.
2780 It is zero if d_getlogin_r is undef, and one of the
2781 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2784 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2785 This variable encodes the prototype of getnetbyaddr_r.
2786 It is zero if d_getnetbyaddr_r is undef, and one of the
2787 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2790 getnetbyname_r_proto (d_getnetbyname_r.U):
2791 This variable encodes the prototype of getnetbyname_r.
2792 It is zero if d_getnetbyname_r is undef, and one of the
2793 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2796 getnetent_r_proto (d_getnetent_r.U):
2797 This variable encodes the prototype of getnetent_r.
2798 It is zero if d_getnetent_r is undef, and one of the
2799 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2802 getprotobyname_r_proto (d_getprotobyname_r.U):
2803 This variable encodes the prototype of getprotobyname_r.
2804 It is zero if d_getprotobyname_r is undef, and one of the
2805 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2808 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2809 This variable encodes the prototype of getprotobynumber_r.
2810 It is zero if d_getprotobynumber_r is undef, and one of the
2811 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2814 getprotoent_r_proto (d_getprotoent_r.U):
2815 This variable encodes the prototype of getprotoent_r.
2816 It is zero if d_getprotoent_r is undef, and one of the
2817 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2820 getpwent_r_proto (d_getpwent_r.U):
2821 This variable encodes the prototype of getpwent_r.
2822 It is zero if d_getpwent_r is undef, and one of the
2823 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2826 getpwnam_r_proto (d_getpwnam_r.U):
2827 This variable encodes the prototype of getpwnam_r.
2828 It is zero if d_getpwnam_r is undef, and one of the
2829 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2832 getpwuid_r_proto (d_getpwuid_r.U):
2833 This variable encodes the prototype of getpwuid_r.
2834 It is zero if d_getpwuid_r is undef, and one of the
2835 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2838 getservbyname_r_proto (d_getservbyname_r.U):
2839 This variable encodes the prototype of getservbyname_r.
2840 It is zero if d_getservbyname_r is undef, and one of the
2841 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2844 getservbyport_r_proto (d_getservbyport_r.U):
2845 This variable encodes the prototype of getservbyport_r.
2846 It is zero if d_getservbyport_r is undef, and one of the
2847 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2850 getservent_r_proto (d_getservent_r.U):
2851 This variable encodes the prototype of getservent_r.
2852 It is zero if d_getservent_r is undef, and one of the
2853 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2856 getspnam_r_proto (d_getspnam_r.U):
2857 This variable encodes the prototype of getspnam_r.
2858 It is zero if d_getspnam_r is undef, and one of the
2859 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2863 This variable contains the format string used for printing a Gid_t.
2865 gidsign (gidsign.U):
2866 This variable contains the signedness of a gidtype.
2867 1 for unsigned, -1 for signed.
2869 gidsize (gidsize.U):
2870 This variable contains the size of a gidtype in bytes.
2872 gidtype (gidtype.U):
2873 This variable defines Gid_t to be something like gid_t, int,
2874 ushort, or whatever type is used to declare the return type
2875 of getgid(). Typically, it is the type of group ids in the kernel.
2878 This variable holds the general path (space-separated) used to
2879 find libraries. It may contain directories that do not exist on
2880 this platform, libpth is the cleaned-up version.
2883 This variable is used internally by Configure to determine the
2884 full pathname (if any) of the gmake program. After Configure runs,
2885 the value is reset to a plain "gmake" and is not useful.
2887 gmtime_r_proto (d_gmtime_r.U):
2888 This variable encodes the prototype of gmtime_r.
2889 It is zero if d_gmtime_r is undef, and one of the
2890 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2893 gnulibc_version (d_gnulibc.U):
2894 This variable contains the version number of the GNU C library.
2895 It is usually something like '2.2.5'. It is a plain '' if this
2896 is not the GNU C library, or if the version is unknown.
2899 This variable is used internally by Configure to determine the
2900 full pathname (if any) of the grep program. After Configure runs,
2901 the value is reset to a plain "grep" and is not useful.
2904 This variable contains a command that produces the text of the
2905 /etc/group file. This is normally "cat /etc/group", but can be
2906 "ypcat group" when NIS is used.
2907 On some systems, such as os390, there may be no equivalent
2908 command, in which case this variable is unset.
2910 groupstype (groupstype.U):
2911 This variable defines Groups_t to be something like gid_t, int,
2912 ushort, or whatever type is used for the second argument to
2913 getgroups() and setgroups(). Usually, this is the same as
2914 gidtype (gid_t), but sometimes it isn't.
2917 This variable is used internally by Configure to determine the
2918 full pathname (if any) of the gzip program. After Configure runs,
2919 the value is reset to a plain "gzip" and is not useful.
2921 h_fcntl (h_fcntl.U):
2922 This is variable gets set in various places to tell i_fcntl that
2923 <fcntl.h> should be included.
2925 h_sysfile (h_sysfile.U):
2926 This is variable gets set in various places to tell i_sys_file that
2927 <sys/file.h> should be included.
2930 Gives the type of hints used for previous answers. May be one of
2931 "default", "recommended" or "previous".
2934 This variable contains a command that produces the text of the
2935 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2936 "ypcat hosts" when NIS is used.
2937 On some systems, such as os390, there may be no equivalent
2938 command, in which case this variable is unset.
2940 html1dir (html1dir.U):
2941 This variable contains the name of the directory in which html
2942 source pages are to be put. This directory is for pages
2943 that describe whole programs, not libraries or modules. It
2944 is intended to correspond roughly to section 1 of the Unix
2947 html1direxp (html1dir.U):
2948 This variable is the same as the html1dir variable, but is filename
2949 expanded at configuration time, for convenient use in makefiles.
2951 html3dir (html3dir.U):
2952 This variable contains the name of the directory in which html
2953 source pages are to be put. This directory is for pages
2954 that describe libraries or modules. It is intended to
2955 correspond roughly to section 3 of the Unix manuals.
2957 html3direxp (html3dir.U):
2958 This variable is the same as the html3dir variable, but is filename
2959 expanded at configuration time, for convenient use in makefiles.
2962 This variable is the size of an I16 in bytes.
2965 This variable contains the C type used for Perl's I16.
2968 This variable is the size of an I32 in bytes.
2971 This variable contains the C type used for Perl's I32.
2974 This variable is the size of an I64 in bytes.
2977 This variable contains the C type used for Perl's I64.
2980 This variable is the size of an I8 in bytes.
2983 This variable contains the C type used for Perl's I8.
2985 i_arpainet (i_arpainet.U):
2986 This variable conditionally defines the I_ARPA_INET symbol,
2987 and indicates whether a C program should include <arpa/inet.h>.
2989 i_assert (i_assert.U):
2990 This variable conditionally defines the I_ASSERT symbol, which
2991 indicates to the C program that <assert.h> exists and could be
2994 i_bsdioctl (i_sysioctl.U):
2995 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2996 indicates to the C program that <sys/bsdioctl.h> exists and should
2999 i_crypt (i_crypt.U):
3000 This variable conditionally defines the I_CRYPT symbol, and indicates
3001 whether a C program should include <crypt.h>.
3004 This variable conditionally defines the I_DB symbol, and indicates
3005 whether a C program may include Berkeley's DB include file <db.h>.
3008 This variable conditionally defines the I_DBM symbol, which
3009 indicates to the C program that <dbm.h> exists and should
3012 i_dirent (i_dirent.U):
3013 This variable conditionally defines I_DIRENT, which indicates
3014 to the C program that it should include <dirent.h>.
3017 This variable conditionally defines the I_DLD symbol, which
3018 indicates to the C program that <dld.h> (GNU dynamic loading)
3019 exists and should be included.
3021 i_dlfcn (i_dlfcn.U):
3022 This variable conditionally defines the I_DLFCN symbol, which
3023 indicates to the C program that <dlfcn.h> exists and should
3026 i_fcntl (i_fcntl.U):
3027 This variable controls the value of I_FCNTL (which tells
3028 the C program to include <fcntl.h>).
3030 i_float (i_float.U):
3031 This variable conditionally defines the I_FLOAT symbol, and indicates
3032 whether a C program may include <float.h> to get symbols like DBL_MAX
3033 or DBL_MIN, i.e. machine dependent floating point values.
3036 This variable conditionally defines the I_FP symbol, and indicates
3037 whether a C program should include <fp.h>.
3039 i_fp_class (i_fp_class.U):
3040 This variable conditionally defines the I_FP_CLASS symbol, and indicates
3041 whether a C program should include <fp_class.h>.
3044 This variable conditionally defines the I_GDBM symbol, which
3045 indicates to the C program that <gdbm.h> exists and should
3048 i_gdbm_ndbm (i_ndbm.U):
3049 This variable conditionally defines the I_GDBM_NDBM symbol, which
3050 indicates to the C program that <gdbm-ndbm.h> exists and should
3051 be included. This is the location of the ndbm.h compatibility file
3054 i_gdbmndbm (i_ndbm.U):
3055 This variable conditionally defines the I_GDBMNDBM symbol, which
3056 indicates to the C program that <gdbm/ndbm.h> exists and should
3057 be included. This was the location of the ndbm.h compatibility file
3061 This variable conditionally defines the I_GRP symbol, and indicates
3062 whether a C program should include <grp.h>.
3064 i_ieeefp (i_ieeefp.U):
3065 This variable conditionally defines the I_IEEEFP symbol, and indicates
3066 whether a C program should include <ieeefp.h>.
3068 i_inttypes (i_inttypes.U):
3069 This variable conditionally defines the I_INTTYPES symbol,
3070 and indicates whether a C program should include <inttypes.h>.
3072 i_langinfo (i_langinfo.U):
3073 This variable conditionally defines the I_LANGINFO symbol,
3074 and indicates whether a C program should include <langinfo.h>.
3076 i_libutil (i_libutil.U):
3077 This variable conditionally defines the I_LIBUTIL symbol, and indicates
3078 whether a C program should include <libutil.h>.
3080 i_limits (i_limits.U):
3081 This variable conditionally defines the I_LIMITS symbol, and indicates
3082 whether a C program may include <limits.h> to get symbols like WORD_BIT
3085 i_locale (i_locale.U):
3086 This variable conditionally defines the I_LOCALE symbol,
3087 and indicates whether a C program should include <locale.h>.
3089 i_machcthr (i_machcthr.U):
3090 This variable conditionally defines the I_MACH_CTHREADS symbol,
3091 and indicates whether a C program should include <mach/cthreads.h>.
3093 i_malloc (i_malloc.U):
3094 This variable conditionally defines the I_MALLOC symbol, and indicates
3095 whether a C program should include <malloc.h>.
3097 i_mallocmalloc (i_mallocmalloc.U):
3098 This variable conditionally defines the I_MALLOCMALLOC symbol,
3099 and indicates whether a C program should include <malloc/malloc.h>.
3102 This variable conditionally defines the I_MATH symbol, and indicates
3103 whether a C program may include <math.h>.
3105 i_memory (i_memory.U):
3106 This variable conditionally defines the I_MEMORY symbol, and indicates
3107 whether a C program should include <memory.h>.
3109 i_mntent (i_mntent.U):
3110 This variable conditionally defines the I_MNTENT symbol, and indicates
3111 whether a C program should include <mntent.h>.
3114 This variable conditionally defines the I_NDBM symbol, which
3115 indicates to the C program that <ndbm.h> exists and should
3118 i_netdb (i_netdb.U):
3119 This variable conditionally defines the I_NETDB symbol, and indicates
3120 whether a C program should include <netdb.h>.
3122 i_neterrno (i_neterrno.U):
3123 This variable conditionally defines the I_NET_ERRNO symbol, which
3124 indicates to the C program that <net/errno.h> exists and should
3127 i_netinettcp (i_netinettcp.U):
3128 This variable conditionally defines the I_NETINET_TCP symbol,
3129 and indicates whether a C program should include <netinet/tcp.h>.
3132 This variable conditionally defines I_NETINET_IN, which indicates
3133 to the C program that it should include <netinet/in.h>. Otherwise,
3134 you may try <sys/in.h>.
3137 This variable conditionally defines the I_POLL symbol, and indicates
3138 whether a C program should include <poll.h>.
3141 This variable conditionally defines the I_PROT symbol, and indicates
3142 whether a C program should include <prot.h>.
3144 i_pthread (i_pthread.U):
3145 This variable conditionally defines the I_PTHREAD symbol,
3146 and indicates whether a C program should include <pthread.h>.
3149 This variable conditionally defines I_PWD, which indicates
3150 to the C program that it should include <pwd.h>.
3152 i_rpcsvcdbm (i_dbm.U):
3153 This variable conditionally defines the I_RPCSVC_DBM symbol, which
3154 indicates to the C program that <rpcsvc/dbm.h> exists and should
3155 be included. Some System V systems might need this instead of <dbm.h>.
3158 This variable conditionally defines the I_SFIO symbol,
3159 and indicates whether a C program should include <sfio.h>.
3161 i_sgtty (i_termio.U):
3162 This variable conditionally defines the I_SGTTY symbol, which
3163 indicates to the C program that it should include <sgtty.h> rather
3166 i_shadow (i_shadow.U):
3167 This variable conditionally defines the I_SHADOW symbol, and indicates
3168 whether a C program should include <shadow.h>.
3170 i_socks (i_socks.U):
3171 This variable conditionally defines the I_SOCKS symbol, and indicates
3172 whether a C program should include <socks.h>.
3174 i_stdarg (i_varhdr.U):
3175 This variable conditionally defines the I_STDARG symbol, which
3176 indicates to the C program that <stdarg.h> exists and should
3179 i_stdbool (i_stdbool.U):
3180 This variable conditionally defines the I_STDBOOL symbol, which
3181 indicates to the C program that <stdbool.h> exists and should
3184 i_stddef (i_stddef.U):
3185 This variable conditionally defines the I_STDDEF symbol, which
3186 indicates to the C program that <stddef.h> exists and should
3189 i_stdlib (i_stdlib.U):
3190 This variable conditionally defines the I_STDLIB symbol, which
3191 indicates to the C program that <stdlib.h> exists and should
3194 i_string (i_string.U):
3195 This variable conditionally defines the I_STRING symbol, which
3196 indicates that <string.h> should be included rather than <strings.h>.
3198 i_sunmath (i_sunmath.U):
3199 This variable conditionally defines the I_SUNMATH symbol, and indicates
3200 whether a C program should include <sunmath.h>.
3202 i_sysaccess (i_sysaccess.U):
3203 This variable conditionally defines the I_SYS_ACCESS symbol,
3204 and indicates whether a C program should include <sys/access.h>.
3206 i_sysdir (i_sysdir.U):
3207 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3208 whether a C program should include <sys/dir.h>.
3210 i_sysfile (i_sysfile.U):
3211 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3212 whether a C program should include <sys/file.h> to get R_OK and friends.
3214 i_sysfilio (i_sysioctl.U):
3215 This variable conditionally defines the I_SYS_FILIO symbol, which
3216 indicates to the C program that <sys/filio.h> exists and should
3217 be included in preference to <sys/ioctl.h>.
3220 This variable conditionally defines I_SYS_IN, which indicates
3221 to the C program that it should include <sys/in.h> instead of
3224 i_sysioctl (i_sysioctl.U):
3225 This variable conditionally defines the I_SYS_IOCTL symbol, which
3226 indicates to the C program that <sys/ioctl.h> exists and should
3229 i_syslog (i_syslog.U):
3230 This variable conditionally defines the I_SYSLOG symbol,
3231 and indicates whether a C program should include <syslog.h>.
3233 i_sysmman (i_sysmman.U):
3234 This variable conditionally defines the I_SYS_MMAN symbol, and
3235 indicates whether a C program should include <sys/mman.h>.
3237 i_sysmode (i_sysmode.U):
3238 This variable conditionally defines the I_SYSMODE symbol,
3239 and indicates whether a C program should include <sys/mode.h>.
3241 i_sysmount (i_sysmount.U):
3242 This variable conditionally defines the I_SYSMOUNT symbol,
3243 and indicates whether a C program should include <sys/mount.h>.
3245 i_sysndir (i_sysndir.U):
3246 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3247 whether a C program should include <sys/ndir.h>.
3249 i_sysparam (i_sysparam.U):
3250 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3251 whether a C program should include <sys/param.h>.
3253 i_syspoll (i_syspoll.U):
3254 This variable conditionally defines the I_SYS_POLL symbol, which
3255 indicates to the C program that it should include <sys/poll.h>.
3257 i_sysresrc (i_sysresrc.U):
3258 This variable conditionally defines the I_SYS_RESOURCE symbol,
3259 and indicates whether a C program should include <sys/resource.h>.
3261 i_syssecrt (i_syssecrt.U):
3262 This variable conditionally defines the I_SYS_SECURITY symbol,
3263 and indicates whether a C program should include <sys/security.h>.
3265 i_sysselct (i_sysselct.U):
3266 This variable conditionally defines I_SYS_SELECT, which indicates
3267 to the C program that it should include <sys/select.h> in order to
3268 get the definition of struct timeval.
3270 i_syssockio (i_sysioctl.U):
3271 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3272 C program that socket ioctl codes may be found in <sys/sockio.h>
3273 instead of <sys/ioctl.h>.
3275 i_sysstat (i_sysstat.U):
3276 This variable conditionally defines the I_SYS_STAT symbol,
3277 and indicates whether a C program should include <sys/stat.h>.
3279 i_sysstatfs (i_sysstatfs.U):
3280 This variable conditionally defines the I_SYSSTATFS symbol,
3281 and indicates whether a C program should include <sys/statfs.h>.
3283 i_sysstatvfs (i_sysstatvfs.U):
3284 This variable conditionally defines the I_SYSSTATVFS symbol,
3285 and indicates whether a C program should include <sys/statvfs.h>.
3287 i_systime (i_time.U):
3288 This variable conditionally defines I_SYS_TIME, which indicates
3289 to the C program that it should include <sys/time.h>.
3291 i_systimek (i_time.U):
3292 This variable conditionally defines I_SYS_TIME_KERNEL, which
3293 indicates to the C program that it should include <sys/time.h>
3294 with KERNEL defined.
3296 i_systimes (i_systimes.U):
3297 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3298 whether a C program should include <sys/times.h>.
3300 i_systypes (i_systypes.U):
3301 This variable conditionally defines the I_SYS_TYPES symbol,
3302 and indicates whether a C program should include <sys/types.h>.
3304 i_sysuio (i_sysuio.U):
3305 This variable conditionally defines the I_SYSUIO symbol, and indicates
3306 whether a C program should include <sys/uio.h>.
3308 i_sysun (i_sysun.U):
3309 This variable conditionally defines I_SYS_UN, which indicates
3310 to the C program that it should include <sys/un.h> to get UNIX
3311 domain socket definitions.
3313 i_sysutsname (i_sysutsname.U):
3314 This variable conditionally defines the I_SYSUTSNAME symbol,
3315 and indicates whether a C program should include <sys/utsname.h>.
3317 i_sysvfs (i_sysvfs.U):
3318 This variable conditionally defines the I_SYSVFS symbol,
3319 and indicates whether a C program should include <sys/vfs.h>.
3321 i_syswait (i_syswait.U):
3322 This variable conditionally defines I_SYS_WAIT, which indicates
3323 to the C program that it should include <sys/wait.h>.
3325 i_termio (i_termio.U):
3326 This variable conditionally defines the I_TERMIO symbol, which
3327 indicates to the C program that it should include <termio.h> rather
3330 i_termios (i_termio.U):
3331 This variable conditionally defines the I_TERMIOS symbol, which
3332 indicates to the C program that the POSIX <termios.h> file is
3336 This variable conditionally defines I_TIME, which indicates
3337 to the C program that it should include <time.h>.
3339 i_unistd (i_unistd.U):
3340 This variable conditionally defines the I_UNISTD symbol, and indicates
3341 whether a C program should include <unistd.h>.
3343 i_ustat (i_ustat.U):
3344 This variable conditionally defines the I_USTAT symbol, and indicates
3345 whether a C program should include <ustat.h>.
3347 i_utime (i_utime.U):
3348 This variable conditionally defines the I_UTIME symbol, and indicates
3349 whether a C program should include <utime.h>.
3351 i_values (i_values.U):
3352 This variable conditionally defines the I_VALUES symbol, and indicates
3353 whether a C program may include <values.h> to get symbols like MAXLONG
3356 i_varargs (i_varhdr.U):
3357 This variable conditionally defines I_VARARGS, which indicates
3358 to the C program that it should include <varargs.h>.
3360 i_varhdr (i_varhdr.U):
3361 Contains the name of the header to be included to get va_dcl definition.
3362 Typically one of varargs.h or stdarg.h.
3364 i_vfork (i_vfork.U):
3365 This variable conditionally defines the I_VFORK symbol, and indicates
3366 whether a C program should include vfork.h.
3368 ignore_versioned_solibs (libs.U):
3369 This variable should be non-empty if non-versioned shared
3370 libraries (libfoo.so.x.y) are to be ignored (because they
3371 cannot be linked against).
3373 inc_version_list (inc_version_list.U):
3374 This variable specifies the list of subdirectories in over
3375 which perl.c:incpush() and lib/lib.pm will automatically
3376 search when adding directories to @INC. The elements in
3377 the list are separated by spaces. This is only useful
3378 if you have a perl library directory tree structured like the
3379 default one. See INSTALL for how this works. The versioned
3380 site_perl directory was introduced in 5.005, so that is the
3381 lowest possible value.
3383 This list includes architecture-dependent directories back to
3384 version $api_versionstring (e.g. 5.5.640) and
3385 architecture-independent directories all the way back to
3388 inc_version_list_init (inc_version_list.U):
3389 This variable holds the same list as inc_version_list, but
3390 each item is enclosed in double quotes and separated by commas,
3391 suitable for use in the PERL_INC_VERSION_LIST initialization.
3394 This variable must precede the normal include path to get the
3395 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3396 Value can be "" or "/bsd43" on mips.
3399 This variable is defined but not used by Configure.
3400 The value is the empty string and is not useful.
3402 initialinstalllocation (bin.U):
3403 When userelocatableinc is true, this variable holds the location
3404 that make install should copy the perl binary to, with all the
3405 run-time relocatable paths calculated from this at install time.
3406 When used, it is initialised to the original value of binexp, and
3407 then binexp is set to '.../', as the other binaries are found
3408 relative to the perl binary.
3410 installarchlib (archlib.U):
3411 This variable is really the same as archlibexp but may differ on
3412 those systems using AFS. For extra portability, only this variable
3413 should be used in makefiles.
3416 This variable is the same as binexp unless AFS is running in which case
3417 the user is explicitly prompted for it. This variable should always
3418 be used in your makefiles for maximum portability.
3420 installhtml1dir (html1dir.U):
3421 This variable is really the same as html1direxp, unless you are
3422 using a different installprefix. For extra portability, you
3423 should only use this variable within your makefiles.
3425 installhtml3dir (html3dir.U):
3426 This variable is really the same as html3direxp, unless you are
3427 using a different installprefix. For extra portability, you
3428 should only use this variable within your makefiles.
3430 installman1dir (man1dir.U):
3431 This variable is really the same as man1direxp, unless you are using
3432 AFS in which case it points to the read/write location whereas
3433 man1direxp only points to the read-only access location. For extra
3434 portability, you should only use this variable within your makefiles.
3436 installman3dir (man3dir.U):
3437 This variable is really the same as man3direxp, unless you are using
3438 AFS in which case it points to the read/write location whereas
3439 man3direxp only points to the read-only access location. For extra
3440 portability, you should only use this variable within your makefiles.
3442 installprefix (installprefix.U):
3443 This variable holds the name of the directory below which
3444 "make install" will install the package. For most users, this
3445 is the same as prefix. However, it is useful for
3446 installing the software into a different (usually temporary)
3447 location after which it can be bundled up and moved somehow
3448 to the final location specified by prefix.
3450 installprefixexp (installprefix.U):
3451 This variable holds the full absolute path of installprefix
3452 with all ~-expansion done.
3454 installprivlib (privlib.U):
3455 This variable is really the same as privlibexp but may differ on
3456 those systems using AFS. For extra portability, only this variable
3457 should be used in makefiles.
3459 installscript (scriptdir.U):
3460 This variable is usually the same as scriptdirexp, unless you are on
3461 a system running AFS, in which case they may differ slightly. You
3462 should always use this variable within your makefiles for portability.
3464 installsitearch (sitearch.U):
3465 This variable is really the same as sitearchexp but may differ on
3466 those systems using AFS. For extra portability, only this variable
3467 should be used in makefiles.
3469 installsitebin (sitebin.U):
3470 This variable is usually the same as sitebinexp, unless you are on
3471 a system running AFS, in which case they may differ slightly. You
3472 should always use this variable within your makefiles for portability.
3474 installsitehtml1dir (sitehtml1dir.U):
3475 This variable is really the same as sitehtml1direxp, unless you are using
3476 AFS in which case it points to the read/write location whereas
3477 html1direxp only points to the read-only access location. For extra
3478 portability, you should only use this variable within your makefiles.
3480 installsitehtml3dir (sitehtml3dir.U):
3481 This variable is really the same as sitehtml3direxp, unless you are using
3482 AFS in which case it points to the read/write location whereas
3483 html3direxp only points to the read-only access location. For extra
3484 portability, you should only use this variable within your makefiles.
3486 installsitelib (sitelib.U):
3487 This variable is really the same as sitelibexp but may differ on
3488 those systems using AFS. For extra portability, only this variable
3489 should be used in makefiles.
3491 installsiteman1dir (siteman1dir.U):
3492 This variable is really the same as siteman1direxp, unless you are using
3493 AFS in which case it points to the read/write location whereas
3494 man1direxp only points to the read-only access location. For extra
3495 portability, you should only use this variable within your makefiles.
3497 installsiteman3dir (siteman3dir.U):
3498 This variable is really the same as siteman3direxp, unless you are using
3499 AFS in which case it points to the read/write location whereas
3500 man3direxp only points to the read-only access location. For extra
3501 portability, you should only use this variable within your makefiles.
3503 installsitescript (sitescript.U):
3504 This variable is usually the same as sitescriptexp, unless you are on
3505 a system running AFS, in which case they may differ slightly. You
3506 should always use this variable within your makefiles for portability.
3508 installstyle (installstyle.U):
3509 This variable describes the "style" of the perl installation.
3510 This is intended to be useful for tools that need to
3511 manipulate entire perl distributions. Perl itself doesn't use
3512 this to find its libraries -- the library directories are
3513 stored directly in Config.pm. Currently, there are only two
3514 styles: "lib" and "lib/perl5". The default library locations
3515 (e.g. privlib, sitelib) are either $prefix/lib or
3516 $prefix/lib/perl5. The former is useful if $prefix is a
3517 directory dedicated to perl (e.g. /opt/perl), while the latter
3518 is useful if $prefix is shared by many packages, e.g. if
3521 Unfortunately, while this "style" variable is used to set
3522 defaults for all three directory hierarchies (core, vendor, and
3523 site), there is no guarantee that the same style is actually
3524 appropriate for all those directories. For example, $prefix
3525 might be /opt/perl, but $siteprefix might be /usr/local.
3526 (Perhaps, in retrospect, the "lib" style should never have been
3527 supported, but it did seem like a nice idea at the time.)
3529 The situation is even less clear for tools such as MakeMaker
3530 that can be used to install additional modules into
3531 non-standard places. For example, if a user intends to install
3532 a module into a private directory (perhaps by setting PREFIX on
3533 the Makefile.PL command line), then there is no reason to
3534 assume that the Configure-time $installstyle setting will be
3535 relevant for that PREFIX.
3537 This may later be extended to include other information, so
3538 be careful with pattern-matching on the results.
3540 For compatibility with perl5.005 and earlier, the default
3541 setting is based on whether or not $prefix contains the string
3544 installusrbinperl (instubperl.U):
3545 This variable tells whether Perl should be installed also as
3546 /usr/bin/perl in addition to
3549 installvendorarch (vendorarch.U):
3550 This variable is really the same as vendorarchexp but may differ on
3551 those systems using AFS. For extra portability, only this variable
3552 should be used in makefiles.
3554 installvendorbin (vendorbin.U):
3555 This variable is really the same as vendorbinexp but may differ on
3556 those systems using AFS. For extra portability, only this variable
3557 should be used in makefiles.
3559 installvendorhtml1dir (vendorhtml1dir.U):
3560 This variable is really the same as vendorhtml1direxp but may differ on
3561 those systems using AFS. For extra portability, only this variable
3562 should be used in makefiles.
3564 installvendorhtml3dir (vendorhtml3dir.U):
3565 This variable is really the same as vendorhtml3direxp but may differ on
3566 those systems using AFS. For extra portability, only this variable
3567 should be used in makefiles.
3569 installvendorlib (vendorlib.U):
3570 This variable is really the same as vendorlibexp but may differ on
3571 those systems using AFS. For extra portability, only this variable
3572 should be used in makefiles.
3574 installvendorman1dir (vendorman1dir.U):
3575 This variable is really the same as vendorman1direxp but may differ on
3576 those systems using AFS. For extra portability, only this variable
3577 should be used in makefiles.
3579 installvendorman3dir (vendorman3dir.U):
3580 This variable is really the same as vendorman3direxp but may differ on
3581 those systems using AFS. For extra portability, only this variable
3582 should be used in makefiles.
3584 installvendorscript (vendorscript.U):
3585 This variable is really the same as vendorscriptexp but may differ on
3586 those systems using AFS. For extra portability, only this variable
3587 should be used in makefiles.
3589 intsize (intsize.U):
3590 This variable contains the value of the INTSIZE symbol, which
3591 indicates to the C program how many bytes there are in an int.
3593 issymlink (issymlink.U):
3594 This variable holds the test command to test for a symbolic link
3595 (if they are supported). Typical values include 'test -h' and
3598 ivdformat (perlxvf.U):
3599 This variable contains the format string used for printing
3600 a Perl IV as a signed decimal integer.
3603 This variable is the size of an IV in bytes.
3606 This variable contains the C type used for Perl's IV.
3608 known_extensions (Extensions.U):
3609 This variable holds a list of all XS extensions included in
3613 This variable is defined but not used by Configure.
3614 The value is the empty string and is not useful.
3617 This variable indicates the program to be used to link
3618 libraries for dynamic loading. On some systems, it is 'ld'.
3619 On ELF systems, it should be $cc. Mostly, we'll try to respect
3620 the hint file setting.
3622 ld_can_script (dlsrc.U):
3623 This variable shows if the loader accepts scripts in the form of
3624 -Wl,--version-script=ld.script. This is currently only supported
3625 for GNU ld on ELF in dynamic loading builds.
3627 lddlflags (dlsrc.U):
3628 This variable contains any special flags that might need to be
3629 passed to $ld to create a shared library suitable for dynamic
3630 loading. It is up to the makefile to use it. For hpux, it
3631 should be '-b'. For sunos 4.1, it is empty.
3633 ldflags (ccflags.U):
3634 This variable contains any additional C loader flags desired by
3635 the user. It is up to the Makefile to use this.
3637 ldflags_uselargefiles (uselfs.U):
3638 This variable contains the loader flags needed by large file builds
3639 and added to ldflags by hints files.
3641 ldlibpthname (libperl.U):
3642 This variable holds the name of the shared library
3643 search path, often LD_LIBRARY_PATH. To get an empty
3644 string, the hints file must set this to 'none'.
3647 This variable is used internally by Configure to determine the
3648 full pathname (if any) of the less program. After Configure runs,
3649 the value is reset to a plain "less" and is not useful.
3652 This is an old synonym for _a.
3655 This variable contains the location of the C library.
3657 libperl (libperl.U):
3658 The perl executable is obtained by linking perlmain.c with
3659 libperl, any static extensions (usually just DynaLoader),
3660 and any other libraries needed on this system. libperl
3661 is usually libperl.a, but can also be libperl.so.xxx if
3662 the user wishes to build a perl executable with a shared
3666 This variable holds the general path (space-separated) used to find
3667 libraries. It is intended to be used by other units.
3670 This variable holds the additional libraries we want to use.
3671 It is up to the Makefile to deal with it. The list can be empty.
3674 This variable holds the directory names aka dirnames of the libraries
3675 we found and accepted, duplicates are removed.
3678 This variable holds the filenames aka basenames of the libraries
3679 we found and accepted.
3682 This variable holds the full pathnames of the libraries
3683 we found and accepted.
3686 This variable holds the directory names probed for libraries.
3688 libswanted (Myinit.U):
3689 This variable holds a list of all the libraries we want to
3690 search. The order is chosen to pick up the c library
3691 ahead of ucb or bsd libraries for SVR4.
3693 libswanted_uselargefiles (uselfs.U):
3694 This variable contains the libraries needed by large file builds
3695 and added to ldflags by hints files. It is a space separated list
3696 of the library names without the "lib" prefix or any suffix, just
3700 This variable is defined but not used by Configure.
3701 The value is the empty string and is not useful.
3704 This variable is defined but not used by Configure.
3705 The value is the empty string and is not useful.
3707 lkflags (ccflags.U):
3708 This variable contains any additional C partial linker flags desired by
3709 the user. It is up to the Makefile to use this.
3712 This variable is used internally by Configure to determine the
3713 full pathname (if any) of the ln program. After Configure runs,
3714 the value is reset to a plain "ln" and is not useful.
3717 This variable holds the name of the command to make
3718 symbolic links (if they are supported). It can be used
3719 in the Makefile. It is either 'ln -s' or 'ln'
3721 localtime_r_proto (d_localtime_r.U):
3722 This variable encodes the prototype of localtime_r.
3723 It is zero if d_localtime_r is undef, and one of the
3724 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3727 locincpth (ccflags.U):
3728 This variable contains a list of additional directories to be
3729 searched by the compiler. The appropriate '-I' directives will
3730 be added to ccflags. This is intended to simplify setting
3731 local directories from the Configure command line.
3732 It's not much, but it parallels the loclibpth stuff in libpth.U.
3734 loclibpth (libpth.U):
3735 This variable holds the paths (space-separated) used to find local
3736 libraries. It is prepended to libpth, and is intended to be easily
3737 set from the command line.
3739 longdblsize (d_longdbl.U):
3740 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3741 indicates to the C program how many bytes there are in a long double,
3742 if this system supports long doubles.
3744 longlongsize (d_longlong.U):
3745 This variable contains the value of the LONGLONGSIZE symbol, which
3746 indicates to the C program how many bytes there are in a long long,
3747 if this system supports long long.
3749 longsize (intsize.U):
3750 This variable contains the value of the LONGSIZE symbol, which
3751 indicates to the C program how many bytes there are in a long.
3754 This variable is defined but not used by Configure.
3755 The value is the empty string and is not useful.
3758 This variable is defined but not used by Configure.
3759 The value is the empty string and is not useful.
3762 This variable is used internally by Configure to determine the
3763 full pathname (if any) of the ls program. After Configure runs,
3764 the value is reset to a plain "ls" and is not useful.
3766 lseeksize (lseektype.U):
3767 This variable defines lseektype to be something like off_t, long,
3768 or whatever type is used to declare lseek offset's type in the
3769 kernel (which also appears to be lseek's return type).
3771 lseektype (lseektype.U):
3772 This variable defines lseektype to be something like off_t, long,
3773 or whatever type is used to declare lseek offset's type in the
3774 kernel (which also appears to be lseek's return type).
3777 This variable indicates that the Misc Attribute Definition code is to
3781 If the Misc Attribute Decoration is to be compiled, this variable is
3782 set to the name of the extra header files to be used, else it is ''
3785 If the Misc Attribute Decoration is to be compiled, this variable is
3786 set to the name of the extra object files to be used, else it is ''
3789 If the Misc Attribute Decoration is to be compiled, this variable is
3790 set to the name of the extra C source files to be used, else it is ''
3793 This variable is defined but not used by Configure.
3794 The value is the empty string and is not useful.
3797 This variable is defined but not used by Configure.
3798 The value is the empty string and is not useful.
3801 This variable is used internally by Configure to determine the
3802 full pathname (if any) of the make program. After Configure runs,
3803 the value is reset to a plain "make" and is not useful.
3805 make_set_make (make.U):
3806 Some versions of 'make' set the variable MAKE. Others do not.
3807 This variable contains the string to be included in Makefile.SH
3808 so that MAKE is set if needed, and not if not needed.
3809 Possible values are:
3811 make_set_make='#' # If your make program handles this for you,
3813 make_set_make="MAKE=$make" # if it doesn't.
3815 This uses a comment character so that we can distinguish a
3816 'set' value (from a previous config.sh or Configure '-D' option)
3817 from an uncomputed value.
3819 mallocobj (mallocsrc.U):
3820 This variable contains the name of the malloc.o that this package
3821 generates, if that malloc.o is preferred over the system malloc.
3822 Otherwise the value is null. This variable is intended for generating
3823 Makefiles. See mallocsrc.
3825 mallocsrc (mallocsrc.U):
3826 This variable contains the name of the malloc.c that comes with
3827 the package, if that malloc.c is preferred over the system malloc.
3828 Otherwise the value is null. This variable is intended for generating
3831 malloctype (mallocsrc.U):
3832 This variable contains the kind of ptr returned by malloc and realloc.
3834 man1dir (man1dir.U):
3835 This variable contains the name of the directory in which manual
3836 source pages are to be put. It is the responsibility of the
3837 Makefile.SH to get the value of this into the proper command.
3838 You must be prepared to do the ~name expansion yourself.
3840 man1direxp (man1dir.U):
3841 This variable is the same as the man1dir variable, but is filename
3842 expanded at configuration time, for convenient use in makefiles.
3844 man1ext (man1dir.U):
3845 This variable contains the extension that the manual page should
3846 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3849 man3dir (man3dir.U):
3850 This variable contains the name of the directory in which manual
3851 source pages are to be put. It is the responsibility of the
3852 Makefile.SH to get the value of this into the proper command.
3853 You must be prepared to do the ~name expansion yourself.
3855 man3direxp (man3dir.U):
3856 This variable is the same as the man3dir variable, but is filename
3857 expanded at configuration time, for convenient use in makefiles.
3859 man3ext (man3dir.U):
3860 This variable contains the extension that the manual page should
3861 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3864 mips_type (usrinc.U):
3865 This variable holds the environment type for the mips system.
3866 Possible values are "BSD 4.3" and "System V".
3868 mistrustnm (Csym.U):
3869 This variable can be used to establish a fallthrough for the cases
3870 where nm fails to find a symbol. If usenm is false or usenm is true
3871 and mistrustnm is false, this variable has no effect. If usenm is true
3872 and mistrustnm is "compile", a test program will be compiled to try to
3873 find any symbol that can't be located via nm lookup. If mistrustnm is
3874 "run", the test program will be run as well as being compiled.
3877 This variable is used internally by Configure to determine the
3878 full pathname (if any) of the mkdir program. After Configure runs,
3879 the value is reset to a plain "mkdir" and is not useful.
3881 mmaptype (d_mmap.U):
3882 This symbol contains the type of pointer returned by mmap()
3883 (and simultaneously the type of the first argument).
3884 It can be 'void *' or 'caddr_t'.
3886 modetype (modetype.U):
3887 This variable defines modetype to be something like mode_t,
3888 int, unsigned short, or whatever type is used to declare file
3889 modes for system calls.
3892 This variable is used internally by Configure to determine the
3893 full pathname (if any) of the more program. After Configure runs,
3894 the value is reset to a plain "more" and is not useful.
3896 multiarch (multiarch.U):
3897 This variable conditionally defines the MULTIARCH symbol
3898 which signifies the presence of multiplatform files.
3899 This is normally set by hints files.
3902 This variable is defined but not used by Configure.
3903 The value is the empty string and is not useful.
3905 myarchname (archname.U):
3906 This variable holds the architecture name computed by Configure in
3907 a previous run. It is not intended to be perused by any user and
3908 should never be set in a hint file.
3910 mydomain (myhostname.U):
3911 This variable contains the eventual value of the MYDOMAIN symbol,
3912 which is the domain of the host the program is going to run on.
3913 The domain must be appended to myhostname to form a complete host name.
3914 The dot comes with mydomain, and need not be supplied by the program.
3916 myhostname (myhostname.U):
3917 This variable contains the eventual value of the MYHOSTNAME symbol,
3918 which is the name of the host the program is going to run on.
3919 The domain is not kept with hostname, but must be gotten from mydomain.
3920 The dot comes with mydomain, and need not be supplied by the program.
3922 myuname (Oldconfig.U):
3923 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3924 pseudo variables assignments in the output are stripped, thank you. The
3925 whole thing is then lower-cased.
3928 This variable contains the '-n' flag if that is what causes the echo
3929 command to suppress newline. Otherwise it is null. Correct usage is
3930 $echo $n "prompt for a question: $c".
3932 need_va_copy (need_va_copy.U):
3933 This symbol, if defined, indicates that the system stores
3934 the variable argument list datatype, va_list, in a format
3935 that cannot be copied by simple assignment, so that some
3936 other means must be used when copying is required.
3937 As such systems vary in their provision (or non-provision)
3938 of copying mechanisms, handy.h defines a platform-
3939 independent macro, Perl_va_copy(src, dst), to do the job.
3941 netdb_hlen_type (netdbtype.U):
3942 This variable holds the type used for the 2nd argument to
3943 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3944 This is only useful if you have gethostbyaddr(), naturally.
3946 netdb_host_type (netdbtype.U):
3947 This variable holds the type used for the 1st argument to
3948 gethostbyaddr(). Usually, this is char * or void *, possibly
3949 with or without a const prefix.
3950 This is only useful if you have gethostbyaddr(), naturally.
3952 netdb_name_type (netdbtype.U):
3953 This variable holds the type used for the argument to
3954 gethostbyname(). Usually, this is char * or const char *.
3955 This is only useful if you have gethostbyname(), naturally.
3957 netdb_net_type (netdbtype.U):
3958 This variable holds the type used for the 1st argument to
3959 getnetbyaddr(). Usually, this is int or long.
3960 This is only useful if you have getnetbyaddr(), naturally.
3963 This variable is used internally by Configure to determine the
3964 full pathname (if any) of the nm program. After Configure runs,
3965 the value is reset to a plain "nm" and is not useful.
3968 This variable holds the options that may be necessary for nm.
3970 nm_so_opt (usenm.U):
3971 This variable holds the options that may be necessary for nm
3972 to work on a shared library but that can not be used on an
3973 archive library. Currently, this is only used by Linux, where
3974 nm --dynamic is *required* to get symbols from an ELF library which
3975 has been stripped, but nm --dynamic is *fatal* on an archive library.
3976 Maybe Linux should just always set usenm=false.
3978 nonxs_ext (Extensions.U):
3979 This variable holds a list of all non-xs extensions included
3980 in the package. All of them will be built.
3983 This variable is used internally by Configure to determine the
3984 full pathname (if any) of the nroff program. After Configure runs,
3985 the value is reset to a plain "nroff" and is not useful.
3987 nv_overflows_integers_at (perlxv.U):
3988 This variable gives the largest integer value that NVs can hold
3989 as a constant floating point expression.
3990 If it could not be determined, it holds the value 0.
3992 nv_preserves_uv_bits (perlxv.U):
3993 This variable indicates how many of bits type uvtype
3994 a variable nvtype can preserve.
3996 nveformat (perlxvf.U):
3997 This variable contains the format string used for printing
3998 a Perl NV using %e-ish floating point format.
4000 nvEUformat (perlxvf.U):
4001 This variable contains the format string used for printing
4002 a Perl NV using %E-ish floating point format.
4004 nvfformat (perlxvf.U):
4005 This variable confains the format string used for printing
4006 a Perl NV using %f-ish floating point format.
4008 nvFUformat (perlxvf.U):
4009 This variable confains the format string used for printing
4010 a Perl NV using %F-ish floating point format.
4012 nvgformat (perlxvf.U):
4013 This variable contains the format string used for printing
4014 a Perl NV using %g-ish floating point format.
4016 nvGUformat (perlxvf.U):
4017 This variable contains the format string used for printing
4018 a Perl NV using %G-ish floating point format.
4021 This variable is the size of an NV in bytes.
4024 This variable contains the C type used for Perl's NV.
4026 o_nonblock (nblock_io.U):
4027 This variable bears the symbol value to be used during open() or fcntl()
4028 to turn on non-blocking I/O for a file descriptor. If you wish to switch
4029 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
4030 but that is only supported by some devices.
4033 This is an old synonym for _o.
4035 old_pthread_create_joinable (d_pthrattrj.U):
4036 This variable defines the constant to use for creating joinable
4037 (aka undetached) pthreads. Unused if pthread.h defines
4038 PTHREAD_CREATE_JOINABLE. If used, possible values are
4039 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
4041 optimize (ccflags.U):
4042 This variable contains any optimizer/debugger flag that should be used.
4043 It is up to the Makefile to use it.
4045 orderlib (orderlib.U):
4046 This variable is "true" if the components of libraries must be ordered
4047 (with `lorder $* | tsort`) before placing them in an archive. Set to
4048 "false" if ranlib or ar can generate random libraries.
4050 osname (Oldconfig.U):
4051 This variable contains the operating system name (e.g. sunos,
4052 solaris, hpux, etc.). It can be useful later on for setting
4053 defaults. Any spaces are replaced with underscores. It is set
4054 to a null string if we can't figure it out.
4056 osvers (Oldconfig.U):
4057 This variable contains the operating system version (e.g.
4058 4.1.3, 5.2, etc.). It is primarily used for helping select
4059 an appropriate hints file, but might be useful elsewhere for
4060 setting defaults. It is set to '' if we can't figure it out.
4061 We try to be flexible about how much of the version number
4062 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
4063 same for this package, hints files might just be os_4.0 or
4064 os_4.1, etc., not keeping separate files for each little release.
4066 otherlibdirs (otherlibdirs.U):
4067 This variable contains a colon-separated set of paths for the perl
4068 binary to search for additional library files or modules.
4069 These directories will be tacked to the end of @INC.
4070 Perl will automatically search below each path for version-
4071 and architecture-specific directories. See inc_version_list
4073 A value of ' ' means 'none' and is used to preserve this value
4074 for the next run through Configure.
4076 package (package.U):
4077 This variable contains the name of the package being constructed.
4078 It is primarily intended for the use of later Configure units.
4081 This variable contains the name of the preferred pager on the system.
4082 Usual values are (the full pathnames of) more, less, pg, or cat.
4085 This variable contains a command that produces the text of the
4086 /etc/passwd file. This is normally "cat /etc/passwd", but can be
4087 "ypcat passwd" when NIS is used.
4088 On some systems, such as os390, there may be no equivalent
4089 command, in which case this variable is unset.
4091 patchlevel (patchlevel.U):
4092 The patchlevel level of this package.
4093 The value of patchlevel comes from the patchlevel.h file.
4094 In a version number such as 5.6.1, this is the "6".
4095 In patchlevel.h, this is referred to as "PERL_VERSION".
4098 This is an old synonym for p_ in Head.U, the character
4099 used to separate elements in the command shell search PATH.
4102 This variable is used internally by Configure to determine the
4103 full pathname (if any) of the perl program. After Configure runs,
4104 the value is reset to a plain "perl" and is not useful.
4107 This variable contains the full path (if any) to a previously
4108 installed perl5.005 or later suitable for running the script
4109 to determine inc_version_list.
4111 PERL_API_REVISION (patchlevel.h):
4112 This number describes the earliest compatible PERL_REVISION of
4113 Perl ("compatibility" here being defined as sufficient binary/API
4114 compatibility to run XS code built with the older version).
4115 Normally this does not change across maintenance releases.
4116 Please read the comment in patchlevel.h.
4118 PERL_API_SUBVERSION (patchlevel.h):
4119 This number describes the earliest compatible PERL_SUBVERSION of
4120 Perl ("compatibility" here being defined as sufficient binary/API
4121 compatibility to run XS code built with the older version).
4122 Normally this does not change across maintenance releases.
4123 Please read the comment in patchlevel.h.
4125 PERL_API_VERSION (patchlevel.h):
4126 This number describes the earliest compatible PERL_VERSION of
4127 Perl ("compatibility" here being defined as sufficient binary/API
4128 compatibility to run XS code built with the older version).
4129 Normally this does not change across maintenance releases.
4130 Please read the comment in patchlevel.h.
4132 PERL_CONFIG_SH (Oldsyms.U):
4133 This is set to 'true' in config.sh so that a shell script
4134 sourcing config.sh can tell if it has been sourced already.
4136 PERL_PATCHLEVEL (Oldsyms.U):
4137 This symbol reflects the patchlevel, if available. Will usually
4138 come from the .patch file, which is available when the perl
4139 source tree was fetched with rsync.
4141 perl_patchlevel (patchlevel.U):
4142 This is the Perl patch level, a numeric change identifier,
4143 as defined by whichever source code maintenance system
4144 is used to maintain the patches; currently Perforce.
4145 It does not correlate with the Perl version numbers or
4146 the maintenance versus development dichotomy except
4147 by also being increasing.
4149 PERL_REVISION (Oldsyms.U):
4150 In a Perl version number such as 5.6.2, this is the 5.
4151 This value is manually set in patchlevel.h
4153 perl_static_inline (d_static_inline.U):
4154 This variable defines the PERL_STATIC_INLINE symbol to
4155 the best-guess incantation to use for static inline functions.
4156 Possibilities include
4158 static __inline__ (gcc -ansi)
4159 static __inline (MSVC)
4160 static _inline (older MSVC)
4161 static (c89 compilers)
4163 PERL_SUBVERSION (Oldsyms.U):
4164 In a Perl version number such as 5.6.2, this is the 2.
4165 Values greater than 50 represent potentially unstable
4166 development subversions.
4167 This value is manually set in patchlevel.h
4169 PERL_VERSION (Oldsyms.U):
4170 In a Perl version number such as 5.6.2, this is the 6.
4171 This value is manually set in patchlevel.h
4173 perladmin (perladmin.U):
4174 Electronic mail address of the perl5 administrator.
4177 The list of libraries needed by Perl only (any libraries needed
4178 by extensions only will by dropped, if using dynamic loading).
4180 perlpath (perlpath.U):
4181 This variable contains the eventual value of the PERLPATH symbol,
4182 which contains the name of the perl interpreter to be used in
4183 shell scripts and in the "eval 'exec'" idiom. This variable is
4184 not necessarily the pathname of the file containing the perl
4185 interpreter; you must append the executable extension (_exe) if
4186 it is not already present. Note that Perl code that runs during
4187 the Perl build process cannot reference this variable, as Perl
4188 may not have been installed, or even if installed, may be a
4189 different version of Perl.
4192 This variable is used internally by Configure to determine the
4193 full pathname (if any) of the pg program. After Configure runs,
4194 the value is reset to a plain "pg" and is not useful.
4196 phostname (myhostname.U):
4197 This variable contains the eventual value of the PHOSTNAME symbol,
4198 which is a command that can be fed to popen() to get the host name.
4199 The program should probably not presume that the domain is or isn't
4202 pidtype (pidtype.U):
4203 This variable defines PIDTYPE to be something like pid_t, int,
4204 ushort, or whatever type is used to declare process ids in the kernel.
4207 Holds the private path used by Configure to find out the libraries.
4208 Its value is prepend to libpth. This variable takes care of special
4209 machines, like the mips. Usually, it should be empty.
4212 This variable is defined but not used by Configure.
4213 The value is the empty string and is not useful.
4216 This variable is defined but not used by Configure.
4217 The value is the empty string and is not useful.
4220 This variable holds the name of the directory below which the
4221 user will install the package. Usually, this is /usr/local, and
4222 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4223 man pages in /usr/local/man, etc. It is only used to set defaults
4224 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4226 prefixexp (prefix.U):
4227 This variable holds the full absolute path of the directory below
4228 which the user will install the package. Derived from prefix.
4230 privlib (privlib.U):
4231 This variable contains the eventual value of the PRIVLIB symbol,
4232 which is the name of the private library for this package. It may
4233 have a ~ on the front. It is up to the makefile to eventually create
4234 this directory while performing installation (with ~ substitution).
4236 privlibexp (privlib.U):
4237 This variable is the ~name expanded version of privlib, so that you
4238 may use it directly in Makefiles or shell scripts.
4240 procselfexe (d_procselfexe.U):
4241 If d_procselfexe is defined, $procselfexe is the filename
4242 of the symbolic link pointing to the absolute pathname of
4243 the executing program.
4245 prototype (prototype.U):
4246 This variable holds the eventual value of CAN_PROTOTYPE, which
4247 indicates the C compiler can handle funciton prototypes.
4249 ptrsize (ptrsize.U):
4250 This variable contains the value of the PTRSIZE symbol, which
4251 indicates to the C program how many bytes there are in a pointer.
4253 quadkind (quadtype.U):
4254 This variable, if defined, encodes the type of a quad:
4255 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4257 quadtype (quadtype.U):
4258 This variable defines Quad_t to be something like long, int,
4259 long long, int64_t, or whatever type is used for 64-bit integers.
4261 randbits (randfunc.U):
4262 Indicates how many bits are produced by the function used to
4263 generate normalized random numbers.
4265 randfunc (randfunc.U):
4266 Indicates the name of the random number function to use.
4267 Values include drand48, random, and rand. In C programs,
4268 the 'Drand01' macro is defined to generate uniformly distributed
4269 random numbers over the range [0., 1.[ (see drand01 and nrand).
4271 random_r_proto (d_random_r.U):
4272 This variable encodes the prototype of random_r.
4273 It is zero if d_random_r is undef, and one of the
4274 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4277 randseedtype (randfunc.U):
4278 Indicates the type of the argument of the seedfunc.
4280 ranlib (orderlib.U):
4281 This variable is set to the pathname of the ranlib program, if it is
4282 needed to generate random libraries. Set to ":" if ar can generate
4283 random libraries or if random libraries are not supported
4285 rd_nodata (nblock_io.U):
4286 This variable holds the return code from read() when no data is
4287 present. It should be -1, but some systems return 0 when O_NDELAY is
4288 used, which is a shame because you cannot make the difference between
4289 no data and an EOF.. Sigh!
4291 readdir64_r_proto (d_readdir64_r.U):
4292 This variable encodes the prototype of readdir64_r.
4293 It is zero if d_readdir64_r is undef, and one of the
4294 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4297 readdir_r_proto (d_readdir_r.U):
4298 This variable encodes the prototype of readdir_r.
4299 It is zero if d_readdir_r is undef, and one of the
4300 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4303 revision (patchlevel.U):
4304 The value of revision comes from the patchlevel.h file.
4305 In a version number such as 5.6.1, this is the "5".
4306 In patchlevel.h, this is referred to as "PERL_REVISION".
4309 This variable is used internally by Configure to determine the
4310 full pathname (if any) of the rm program. After Configure runs,
4311 the value is reset to a plain "rm" and is not useful.
4314 This is a cleanup variable for try test programs.
4315 Internal Configure use only.
4318 This variable is defined but not used by Configure.
4319 The value is the empty string and is not useful.
4322 This variable contains the command used by Configure
4323 to copy and execute a cross-compiled executable in the
4324 target host. Useful and available only during Perl build.
4325 Empty string '' if not cross-compiling.
4328 This variable contains 'true' or 'false' depending whether the
4329 nm extraction should be performed or not, according to the value
4330 of usenm and the flags on the Configure command line.
4332 sched_yield (d_pthread_y.U):
4333 This variable defines the way to yield the execution
4334 of the current thread.
4336 scriptdir (scriptdir.U):
4337 This variable holds the name of the directory in which the user wants
4338 to put publicly scripts for the package in question. It is either
4339 the same directory as for binaries, or a special one that can be
4340 mounted across different architectures, like /usr/share. Programs
4341 must be prepared to deal with ~name expansion.
4343 scriptdirexp (scriptdir.U):
4344 This variable is the same as scriptdir, but is filename expanded
4345 at configuration time, for programs not wanting to bother with it.
4348 This variable is used internally by Configure to determine the
4349 full pathname (if any) of the sed program. After Configure runs,
4350 the value is reset to a plain "sed" and is not useful.
4352 seedfunc (randfunc.U):
4353 Indicates the random number generating seed function.
4354 Values include srand48, srandom, and srand.
4356 selectminbits (selectminbits.U):
4357 This variable holds the minimum number of bits operated by select.
4358 That is, if you do select(n, ...), how many bits at least will be
4359 cleared in the masks if some activity is detected. Usually this
4360 is either n or 32*ceil(n/32), especially many little-endians do
4361 the latter. This is only useful if you have select(), naturally.
4363 selecttype (selecttype.U):
4364 This variable holds the type used for the 2nd, 3rd, and 4th
4365 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4366 is defined, and 'int *' otherwise. This is only useful if you
4367 have select(), naturally.
4370 This variable is defined but not used by Configure.
4371 The value is the empty string and is not useful.
4373 setgrent_r_proto (d_setgrent_r.U):
4374 This variable encodes the prototype of setgrent_r.
4375 It is zero if d_setgrent_r is undef, and one of the
4376 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4379 sethostent_r_proto (d_sethostent_r.U):
4380 This variable encodes the prototype of sethostent_r.
4381 It is zero if d_sethostent_r is undef, and one of the
4382 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4385 setlocale_r_proto (d_setlocale_r.U):
4386 This variable encodes the prototype of setlocale_r.
4387 It is zero if d_setlocale_r is undef, and one of the
4388 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4391 setnetent_r_proto (d_setnetent_r.U):
4392 This variable encodes the prototype of setnetent_r.
4393 It is zero if d_setnetent_r is undef, and one of the
4394 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4397 setprotoent_r_proto (d_setprotoent_r.U):
4398 This variable encodes the prototype of setprotoent_r.
4399 It is zero if d_setprotoent_r is undef, and one of the
4400 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4403 setpwent_r_proto (d_setpwent_r.U):
4404 This variable encodes the prototype of setpwent_r.
4405 It is zero if d_setpwent_r is undef, and one of the
4406 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4409 setservent_r_proto (d_setservent_r.U):
4410 This variable encodes the prototype of setservent_r.
4411 It is zero if d_setservent_r is undef, and one of the
4412 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4415 sGMTIME_max (time_size.U):
4416 This variable defines the maximum value of the time_t offset that
4417 the system function gmtime () accepts
4419 sGMTIME_min (time_size.U):
4420 This variable defines the minimum value of the time_t offset that
4421 the system function gmtime () accepts
4424 This variable contains the full pathname of the shell used
4425 on this system to execute Bourne shell scripts. Usually, this will be
4426 /bin/sh, though it's possible that some systems will have /bin/ksh,
4427 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4429 This unit comes before Options.U, so you can't set sh with a '-D'
4430 option, though you can override this (and startsh)
4431 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4434 This variable is defined but not used by Configure.
4435 The value is the empty string and is not useful.
4437 sharpbang (spitshell.U):
4438 This variable contains the string #! if this system supports that
4441 shmattype (d_shmat.U):
4442 This symbol contains the type of pointer returned by shmat().
4443 It can be 'void *' or 'char *'.
4445 shortsize (intsize.U):
4446 This variable contains the value of the SHORTSIZE symbol which
4447 indicates to the C program how many bytes there are in a short.
4449 shrpenv (libperl.U):
4450 If the user builds a shared libperl.so, then we need to tell the
4451 'perl' executable where it will be able to find the installed libperl.so.
4452 One way to do this on some systems is to set the environment variable
4453 LD_RUN_PATH to the directory that will be the final location of the
4454 shared libperl.so. The makefile can use this with something like
4455 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4457 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4460 See the main perl Makefile.SH for actual working usage.
4461 Alternatively, we might be able to use a command line option such
4462 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4463 $archlibexp/CORE (Linux).
4465 shsharp (spitshell.U):
4466 This variable tells further Configure units whether your sh can
4469 sig_count (sig_name.U):
4470 This variable holds a number larger than the largest valid
4471 signal number. This is usually the same as the NSIG macro.
4473 sig_name (sig_name.U):
4474 This variable holds the signal names, space separated. The leading
4475 SIG in signal name is removed. A ZERO is prepended to the list.
4476 This is currently not used, sig_name_init is used instead.
4478 sig_name_init (sig_name.U):
4479 This variable holds the signal names, enclosed in double quotes and
4480 separated by commas, suitable for use in the SIG_NAME definition
4481 below. A "ZERO" is prepended to the list, and the list is
4482 terminated with a plain 0. The leading SIG in signal names
4483 is removed. See sig_num.
4485 sig_num (sig_name.U):
4486 This variable holds the signal numbers, space separated. A ZERO is
4487 prepended to the list (corresponding to the fake SIGZERO).
4488 Those numbers correspond to the value of the signal listed
4489 in the same place within the sig_name list.
4490 This is currently not used, sig_num_init is used instead.
4492 sig_num_init (sig_name.U):
4493 This variable holds the signal numbers, enclosed in double quotes and
4494 separated by commas, suitable for use in the SIG_NUM definition
4495 below. A "ZERO" is prepended to the list, and the list is
4496 terminated with a plain 0.
4498 sig_size (sig_name.U):
4499 This variable contains the number of elements of the sig_name
4502 signal_t (d_voidsig.U):
4503 This variable holds the type of the signal handler (void or int).
4505 sitearch (sitearch.U):
4506 This variable contains the eventual value of the SITEARCH symbol,
4507 which is the name of the private library for this package. It may
4508 have a ~ on the front. It is up to the makefile to eventually create
4509 this directory while performing installation (with ~ substitution).
4510 The standard distribution will put nothing in this directory.
4511 After perl has been installed, users may install their own local
4512 architecture-dependent modules in this directory with
4513 MakeMaker Makefile.PL
4514 or equivalent. See INSTALL for details.
4516 sitearchexp (sitearch.U):
4517 This variable is the ~name expanded version of sitearch, so that you
4518 may use it directly in Makefiles or shell scripts.
4520 sitebin (sitebin.U):
4521 This variable holds the name of the directory in which the user wants
4522 to put add-on publicly executable files for the package in question. It
4523 is most often a local directory such as /usr/local/bin. Programs using
4524 this variable must be prepared to deal with ~name substitution.
4525 The standard distribution will put nothing in this directory.
4526 After perl has been installed, users may install their own local
4527 executables in this directory with
4528 MakeMaker Makefile.PL
4529 or equivalent. See INSTALL for details.
4531 sitebinexp (sitebin.U):
4532 This is the same as the sitebin variable, but is filename expanded at
4533 configuration time, for use in your makefiles.
4535 sitehtml1dir (sitehtml1dir.U):
4536 This variable contains the name of the directory in which site-specific
4537 html source pages are to be put. It is the responsibility of the
4538 Makefile.SH to get the value of this into the proper command.
4539 You must be prepared to do the ~name expansion yourself.
4540 The standard distribution will put nothing in this directory.
4541 After perl has been installed, users may install their own local
4542 html pages in this directory with
4543 MakeMaker Makefile.PL
4544 or equivalent. See INSTALL for details.
4546 sitehtml1direxp (sitehtml1dir.U):
4547 This variable is the same as the sitehtml1dir variable, but is filename
4548 expanded at configuration time, for convenient use in makefiles.
4550 sitehtml3dir (sitehtml3dir.U):
4551 This variable contains the name of the directory in which site-specific
4552 library html source pages are to be put. It is the responsibility of the
4553 Makefile.SH to get the value of this into the proper command.
4554 You must be prepared to do the ~name expansion yourself.
4555 The standard distribution will put nothing in this directory.
4556 After perl has been installed, users may install their own local
4557 library html pages in this directory with
4558 MakeMaker Makefile.PL
4559 or equivalent. See INSTALL for details.
4561 sitehtml3direxp (sitehtml3dir.U):
4562 This variable is the same as the sitehtml3dir variable, but is filename
4563 expanded at configuration time, for convenient use in makefiles.
4565 sitelib (sitelib.U):
4566 This variable contains the eventual value of the SITELIB symbol,
4567 which is the name of the private library for this package. It may
4568 have a ~ on the front. It is up to the makefile to eventually create
4569 this directory while performing installation (with ~ substitution).
4570 The standard distribution will put nothing in this directory.
4571 After perl has been installed, users may install their own local
4572 architecture-independent modules in this directory with
4573 MakeMaker Makefile.PL
4574 or equivalent. See INSTALL for details.
4576 sitelib_stem (sitelib.U):
4577 This variable is $sitelibexp with any trailing version-specific component
4578 removed. The elements in inc_version_list (inc_version_list.U) can
4579 be tacked onto this variable to generate a list of directories to search.
4581 sitelibexp (sitelib.U):
4582 This variable is the ~name expanded version of sitelib, so that you
4583 may use it directly in Makefiles or shell scripts.
4585 siteman1dir (siteman1dir.U):
4586 This variable contains the name of the directory in which site-specific
4587 manual source pages are to be put. It is the responsibility of the
4588 Makefile.SH to get the value of this into the proper command.
4589 You must be prepared to do the ~name expansion yourself.
4590 The standard distribution will put nothing in this directory.
4591 After perl has been installed, users may install their own local
4592 man1 pages in this directory with
4593 MakeMaker Makefile.PL
4594 or equivalent. See INSTALL for details.
4596 siteman1direxp (siteman1dir.U):
4597 This variable is the same as the siteman1dir variable, but is filename
4598 expanded at configuration time, for convenient use in makefiles.
4600 siteman3dir (siteman3dir.U):
4601 This variable contains the name of the directory in which site-specific
4602 library man source pages are to be put. It is the responsibility of the
4603 Makefile.SH to get the value of this into the proper command.
4604 You must be prepared to do the ~name expansion yourself.
4605 The standard distribution will put nothing in this directory.
4606 After perl has been installed, users may install their own local
4607 man3 pages in this directory with
4608 MakeMaker Makefile.PL
4609 or equivalent. See INSTALL for details.
4611 siteman3direxp (siteman3dir.U):
4612 This variable is the same as the siteman3dir variable, but is filename
4613 expanded at configuration time, for convenient use in makefiles.
4615 siteprefix (siteprefix.U):
4616 This variable holds the full absolute path of the directory below
4617 which the user will install add-on packages.
4618 See INSTALL for usage and examples.
4620 siteprefixexp (siteprefix.U):
4621 This variable holds the full absolute path of the directory below
4622 which the user will install add-on packages. Derived from siteprefix.
4624 sitescript (sitescript.U):
4625 This variable holds the name of the directory in which the user wants
4626 to put add-on publicly executable files for the package in question. It
4627 is most often a local directory such as /usr/local/bin. Programs using
4628 this variable must be prepared to deal with ~name substitution.
4629 The standard distribution will put nothing in this directory.
4630 After perl has been installed, users may install their own local
4631 scripts in this directory with
4632 MakeMaker Makefile.PL
4633 or equivalent. See INSTALL for details.
4635 sitescriptexp (sitescript.U):
4636 This is the same as the sitescript variable, but is filename expanded at
4637 configuration time, for use in your makefiles.
4639 sizesize (sizesize.U):
4640 This variable contains the size of a sizetype in bytes.
4642 sizetype (sizetype.U):
4643 This variable defines sizetype to be something like size_t,
4644 unsigned long, or whatever type is used to declare length
4645 parameters for string functions.
4648 This variable is defined but not used by Configure.
4649 The value is the empty string and is not useful.
4651 sLOCALTIME_max (time_size.U):
4652 This variable defines the maximum value of the time_t offset that
4653 the system function localtime () accepts
4655 sLOCALTIME_min (time_size.U):
4656 This variable defines the minimum value of the time_t offset that
4657 the system function localtime () accepts
4660 This variable is defined but not used by Configure.
4661 The value is the empty string and is not useful.
4664 This variable holds the extension used to identify shared libraries
4665 (also known as shared objects) on the system. Usually set to 'so'.
4667 sockethdr (d_socket.U):
4668 This variable has any cpp '-I' flags needed for socket support.
4670 socketlib (d_socket.U):
4671 This variable has the names of any libraries needed for socket support.
4673 socksizetype (socksizetype.U):
4674 This variable holds the type used for the size argument
4675 for various socket calls like accept. Usual values include
4676 socklen_t, size_t, and int.
4679 This variable is used internally by Configure to determine the
4680 full pathname (if any) of the sort program. After Configure runs,
4681 the value is reset to a plain "sort" and is not useful.
4683 spackage (package.U):
4684 This variable contains the name of the package being constructed,
4685 with the first letter uppercased, i.e. suitable for starting
4688 spitshell (spitshell.U):
4689 This variable contains the command necessary to spit out a runnable
4690 shell on this system. It is either cat or a grep '-v' for # comments.
4692 sPRId64 (quadfio.U):
4693 This variable, if defined, contains the string used by stdio to
4694 format 64-bit decimal numbers (format 'd') for output.
4696 sPRIeldbl (longdblfio.U):
4697 This variable, if defined, contains the string used by stdio to
4698 format long doubles (format 'e') for output.
4700 sPRIEUldbl (longdblfio.U):
4701 This variable, if defined, contains the string used by stdio to
4702 format long doubles (format 'E') for output.
4703 The 'U' in the name is to separate this from sPRIeldbl so that even
4704 case-blind systems can see the difference.
4706 sPRIfldbl (longdblfio.U):
4707 This variable, if defined, contains the string used by stdio to
4708 format long doubles (format 'f') for output.
4710 sPRIFUldbl (longdblfio.U):
4711 This variable, if defined, contains the string used by stdio to
4712 format long doubles (format 'F') for output.
4713 The 'U' in the name is to separate this from sPRIfldbl so that even
4714 case-blind systems can see the difference.
4716 sPRIgldbl (longdblfio.U):
4717 This variable, if defined, contains the string used by stdio to
4718 format long doubles (format 'g') for output.
4720 sPRIGUldbl (longdblfio.U):
4721 This variable, if defined, contains the string used by stdio to
4722 format long doubles (format 'G') for output.
4723 The 'U' in the name is to separate this from sPRIgldbl so that even
4724 case-blind systems can see the difference.
4726 sPRIi64 (quadfio.U):
4727 This variable, if defined, contains the string used by stdio to
4728 format 64-bit decimal numbers (format 'i') for output.
4730 sPRIo64 (quadfio.U):
4731 This variable, if defined, contains the string used by stdio to
4732 format 64-bit octal numbers (format 'o') for output.
4734 sPRIu64 (quadfio.U):
4735 This variable, if defined, contains the string used by stdio to
4736 format 64-bit unsigned decimal numbers (format 'u') for output.
4738 sPRIx64 (quadfio.U):
4739 This variable, if defined, contains the string used by stdio to
4740 format 64-bit hexadecimal numbers (format 'x') for output.
4742 sPRIXU64 (quadfio.U):
4743 This variable, if defined, contains the string used by stdio to
4744 format 64-bit hExADECimAl numbers (format 'X') for output.
4745 The 'U' in the name is to separate this from sPRIx64 so that even
4746 case-blind systems can see the difference.
4748 srand48_r_proto (d_srand48_r.U):
4749 This variable encodes the prototype of srand48_r.
4750 It is zero if d_srand48_r is undef, and one of the
4751 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4754 srandom_r_proto (d_srandom_r.U):
4755 This variable encodes the prototype of srandom_r.
4756 It is zero if d_srandom_r is undef, and one of the
4757 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4761 This variable holds the (possibly relative) path of the package source.
4762 It is up to the Makefile to use this variable and set VPATH accordingly
4763 to find the sources remotely. Use $pkgsrc to have an absolute path.
4765 sSCNfldbl (longdblfio.U):
4766 This variable, if defined, contains the string used by stdio to
4767 format long doubles (format 'f') for input.
4769 ssizetype (ssizetype.U):
4770 This variable defines ssizetype to be something like ssize_t,
4771 long or int. It is used by functions that return a count
4772 of bytes or an error condition. It must be a signed type.
4773 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4775 st_ino_sign (st_ino_def.U):
4776 This variable contains the signedness of struct stat's st_ino.
4777 1 for unsigned, -1 for signed.
4779 st_ino_size (st_ino_def.U):
4780 This variable contains the size of struct stat's st_ino in bytes.
4782 startperl (startperl.U):
4783 This variable contains the string to put on the front of a perl
4784 script to make sure (hopefully) that it runs with perl and not some
4785 shell. Of course, that leading line must be followed by the classical
4787 eval 'exec perl -S $0 ${1+"$@"}'
4788 if $running_under_some_shell;
4789 to guarantee perl startup should the shell execute the script. Note
4790 that this magic incantation is not understood by csh.
4792 startsh (startsh.U):
4793 This variable contains the string to put on the front of a shell
4794 script to make sure (hopefully) that it runs with sh and not some
4797 static_ext (Extensions.U):
4798 This variable holds a list of XS extension files we want to
4799 link statically into the package. It is used by Makefile.
4801 stdchar (stdchar.U):
4802 This variable conditionally defines STDCHAR to be the type of char
4803 used in stdio.h. It has the values "unsigned char" or "char".
4805 stdio_base (d_stdstdio.U):
4806 This variable defines how, given a FILE pointer, fp, to access the
4807 _base field (or equivalent) of stdio.h's FILE structure. This will
4808 be used to define the macro FILE_base(fp).
4810 stdio_bufsiz (d_stdstdio.U):
4811 This variable defines how, given a FILE pointer, fp, to determine
4812 the number of bytes store in the I/O buffer pointer to by the
4813 _base field (or equivalent) of stdio.h's FILE structure. This will
4814 be used to define the macro FILE_bufsiz(fp).
4816 stdio_cnt (d_stdstdio.U):
4817 This variable defines how, given a FILE pointer, fp, to access the
4818 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4819 be used to define the macro FILE_cnt(fp).
4821 stdio_filbuf (d_stdstdio.U):
4822 This variable defines how, given a FILE pointer, fp, to tell
4823 stdio to refill its internal buffers (?). This will
4824 be used to define the macro FILE_filbuf(fp).
4826 stdio_ptr (d_stdstdio.U):
4827 This variable defines how, given a FILE pointer, fp, to access the
4828 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4829 be used to define the macro FILE_ptr(fp).
4831 stdio_stream_array (stdio_streams.U):
4832 This variable tells the name of the array holding the stdio streams.
4833 Usual values include _iob, __iob, and __sF.
4835 strerror_r_proto (d_strerror_r.U):
4836 This variable encodes the prototype of strerror_r.
4837 It is zero if d_strerror_r is undef, and one of the
4838 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4841 strings (i_string.U):
4842 This variable holds the full path of the string header that will be
4843 used. Typically /usr/include/string.h or /usr/include/strings.h.
4846 This variable is defined but not used by Configure.
4847 The value is the empty string and is not useful.
4849 subversion (patchlevel.U):
4850 The subversion level of this package.
4851 The value of subversion comes from the patchlevel.h file.
4852 In a version number such as 5.6.1, this is the "1".
4853 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4854 This is unique to perl.
4857 This variable holds the place where the manual is located on this
4858 system. It is not the place where the user wants to put his manual
4859 pages. Rather it is the place where Configure may look to find manual
4860 for unix commands (section 1 of the manual usually). See mansrc.
4863 This variable is defined but not used by Configure.
4864 The value is the empty string and is not useful.
4867 This variable is defined but not used by Configure.
4868 The value is the empty string and is not useful.
4870 targetarch (Cross.U):
4871 If cross-compiling, this variable contains the target architecture.
4872 If not, this will be empty.
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.
4883 This variable is used internally by Configure to determine the
4884 full pathname (if any) of the test program. After Configure runs,
4885 the value is reset to a plain "test" and is not useful.
4887 timeincl (i_time.U):
4888 This variable holds the full path of the included time header(s).
4890 timetype (d_time.U):
4891 This variable holds the type returned by time(). It can be long,
4892 or time_t on BSD sites (in which case <sys/types.h> should be
4893 included). Anyway, the type Time_t should be used.
4895 tmpnam_r_proto (d_tmpnam_r.U):
4896 This variable encodes the prototype of tmpnam_r.
4897 It is zero if d_tmpnam_r is undef, and one of the
4898 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4902 This variable contains the command used by Configure
4903 to copy to from the target host. Useful and available
4904 only during Perl build.
4905 The string ':' if not cross-compiling.
4908 This variable is used internally by Configure to determine the
4909 full pathname (if any) of the touch program. After Configure runs,
4910 the value is reset to a plain "touch" and is not useful.
4913 This variable is used internally by Configure to determine the
4914 full pathname (if any) of the tr program. After Configure runs,
4915 the value is reset to a plain "tr" and is not useful.
4918 This variable contains the value to be passed to the tr(1)
4919 command to transliterate a newline. Typical values are
4920 '\012' and '\n'. This is needed for EBCDIC systems where
4921 newline is not necessarily '\012'.
4924 This variable is defined but not used by Configure.
4925 The value is the empty string and is not useful.
4927 ttyname_r_proto (d_ttyname_r.U):
4928 This variable encodes the prototype of ttyname_r.
4929 It is zero if d_ttyname_r is undef, and one of the
4930 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4934 This variable is the size of an U16 in bytes.
4937 This variable contains the C type used for Perl's U16.
4940 This variable is the size of an U32 in bytes.
4943 This variable contains the C type used for Perl's U32.
4946 This variable is the size of an U64 in bytes.
4949 This variable contains the C type used for Perl's U64.
4952 This variable is the size of an U8 in bytes.
4955 This variable contains the C type used for Perl's U8.
4958 This variable contains the format string used for printing a Uid_t.
4960 uidsign (uidsign.U):
4961 This variable contains the signedness of a uidtype.
4962 1 for unsigned, -1 for signed.
4964 uidsize (uidsize.U):
4965 This variable contains the size of a uidtype in bytes.
4967 uidtype (uidtype.U):
4968 This variable defines Uid_t to be something like uid_t, int,
4969 ushort, or whatever type is used to declare user ids in the kernel.
4972 This variable is used internally by Configure to determine the
4973 full pathname (if any) of the uname program. After Configure runs,
4974 the value is reset to a plain "uname" and is not useful.
4977 This variable is used internally by Configure to determine the
4978 full pathname (if any) of the uniq program. After Configure runs,
4979 the value is reset to a plain "uniq" and is not useful.
4981 uquadtype (quadtype.U):
4982 This variable defines Uquad_t to be something like unsigned long,
4983 unsigned int, unsigned long long, uint64_t, or whatever type is
4984 used for 64-bit integers.
4986 use5005threads (usethreads.U):
4987 This variable conditionally defines the USE_5005THREADS symbol,
4988 and indicates that Perl should be built to use the 5.005-based
4989 threading implementation. Only valid up to 5.8.x.
4991 use64bitall (use64bits.U):
4992 This variable conditionally defines the USE_64_BIT_ALL symbol,
4993 and indicates that 64-bit integer types should be used
4994 when available. The maximal possible
4995 64-bitness is employed: LP64 or ILP64, meaning that you will
4996 be able to use more than 2 gigabytes of memory. This mode is
4997 even more binary incompatible than USE_64_BIT_INT. You may not
4998 be able to run the resulting executable in a 32-bit CPU at all or
4999 you may need at least to reboot your OS to 64-bit mode.
5001 use64bitint (use64bits.U):
5002 This variable conditionally defines the USE_64_BIT_INT symbol,
5003 and indicates that 64-bit integer types should be used
5004 when available. The minimal possible 64-bitness
5005 is employed, just enough to get 64-bit integers into Perl.
5006 This may mean using for example "long longs", while your memory
5007 may still be limited to 2 gigabytes.
5009 usecrosscompile (Cross.U):
5010 This variable conditionally defines the USE_CROSS_COMPILE symbol,
5011 and indicates that Perl has been cross-compiled.
5014 This variable indicates that Perl was configured with development
5015 features enabled. This should not be done for production builds.
5018 This variable indicates if the system supports dynamic
5019 loading of some sort. See also dlsrc and dlobj.
5021 usedtrace (usedtrace.U):
5022 This variable indicates whether we are compiling with dtrace
5023 support. See also dtrace.
5025 usefaststdio (usefaststdio.U):
5026 This variable conditionally defines the USE_FAST_STDIO symbol,
5027 and indicates that Perl should be built to use 'fast stdio'.
5028 Defaults to define in Perls 5.8 and earlier, to undef later.
5030 useithreads (usethreads.U):
5031 This variable conditionally defines the USE_ITHREADS symbol,
5032 and indicates that Perl should be built to use the interpreter-based
5033 threading implementation.
5035 usekernprocpathname (usekernprocpathname.U):
5036 This variable, indicates that we can use sysctl with
5037 KERN_PROC_PATHNAME to get a full path for the executable, and hence
5038 convert $^X to an absolute path.
5040 uselargefiles (uselfs.U):
5041 This variable conditionally defines the USE_LARGE_FILES symbol,
5042 and indicates that large file interfaces should be used when
5045 uselongdouble (uselongdbl.U):
5046 This variable conditionally defines the USE_LONG_DOUBLE symbol,
5047 and indicates that long doubles should be used when available.
5049 usemallocwrap (mallocsrc.U):
5050 This variable contains y if we are wrapping malloc to prevent
5051 integer overflow during size calculations.
5053 usemorebits (usemorebits.U):
5054 This variable conditionally defines the USE_MORE_BITS symbol,
5055 and indicates that explicit 64-bit interfaces and long doubles
5056 should be used when available.
5058 usemultiplicity (usemultiplicity.U):
5059 This variable conditionally defines the MULTIPLICITY symbol,
5060 and indicates that Perl should be built to use multiplicity.
5062 usemymalloc (mallocsrc.U):
5063 This variable contains y if the malloc that comes with this package
5064 is desired over the system's version of malloc. People often include
5065 special versions of malloc for efficiency, but such versions are often
5066 less portable. See also mallocsrc and mallocobj.
5067 If this is 'y', then -lmalloc is removed from $libs.
5070 This variable contains 'true' or 'false' depending whether the
5071 nm extraction is wanted or not.
5073 usensgetexecutablepath (usensgetexecutablepath.U):
5074 This symbol, if defined, indicates that we can use _NSGetExecutablePath
5075 and realpath to get a full path for the executable, and hence convert
5076 $^X to an absolute path.
5078 useopcode (Extensions.U):
5079 This variable holds either 'true' or 'false' to indicate
5080 whether the Opcode extension should be used. The sole
5081 use for this currently is to allow an easy mechanism
5082 for users to skip the Opcode extension from the Configure
5085 useperlio (useperlio.U):
5086 This variable conditionally defines the USE_PERLIO symbol,
5087 and indicates that the PerlIO abstraction should be
5090 useposix (Extensions.U):
5091 This variable holds either 'true' or 'false' to indicate
5092 whether the POSIX extension should be used. The sole
5093 use for this currently is to allow an easy mechanism
5094 for hints files to indicate that POSIX will not compile
5095 on a particular system.
5097 usereentrant (usethreads.U):
5098 This variable conditionally defines the USE_REENTRANT_API symbol,
5099 which indicates that the thread code may try to use the various
5100 _r versions of library functions. This is only potentially
5101 meaningful if usethreads is set and is very experimental, it is
5102 not even prompted for.
5104 userelocatableinc (bin.U):
5105 This variable is set to true to indicate that perl should relocate
5106 @INC entries at runtime based on the path to the perl binary.
5107 Any @INC paths starting ".../" are relocated relative to the directory
5108 containing the perl binary, and a logical cleanup of the path is then
5109 made around the join point (removing "dir/../" pairs)
5112 This variable is set to true when the user agrees to use sfio.
5113 It is set to false when sfio is not available or when the user
5114 explicitly requests not to use sfio. It is here primarily so
5115 that command-line settings can override the auto-detection of
5116 d_sfio without running into a "WHOA THERE".
5118 useshrplib (libperl.U):
5119 This variable is set to 'true' if the user wishes
5120 to build a shared libperl, and 'false' otherwise.
5122 usesitecustomize (d_sitecustomize.U):
5123 This variable is set to true when the user requires a mechanism that
5124 allows the sysadmin to add entries to @INC at runtime. This variable
5125 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
5127 usesocks (usesocks.U):
5128 This variable conditionally defines the USE_SOCKS symbol,
5129 and indicates that Perl should be built to use SOCKS.
5131 usethreads (usethreads.U):
5132 This variable conditionally defines the USE_THREADS symbol,
5133 and indicates that Perl should be built to use threads.
5135 usevendorprefix (vendorprefix.U):
5136 This variable tells whether the vendorprefix
5137 and consequently other vendor* paths are in use.
5139 usevfork (d_vfork.U):
5140 This variable is set to true when the user accepts to use vfork.
5141 It is set to false when no vfork is available or when the user
5142 explicitly requests not to use vfork.
5145 This variable holds the path of the include files, which is
5146 usually /usr/include. It is mainly used by other Configure units.
5149 This variable is defined but not used by Configure.
5150 The value is the empty string and is not useful.
5152 uvoformat (perlxvf.U):
5153 This variable contains the format string used for printing
5154 a Perl UV as an unsigned octal integer.
5157 This variable is the size of a UV in bytes.
5160 This variable contains the C type used for Perl's UV.
5162 uvuformat (perlxvf.U):
5163 This variable contains the format string used for printing
5164 a Perl UV as an unsigned decimal integer.
5166 uvxformat (perlxvf.U):
5167 This variable contains the format string used for printing
5168 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
5170 uvXUformat (perlxvf.U):
5171 This variable contains the format string used for printing
5172 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
5174 vaproto (vaproto.U):
5175 This variable conditionally defines CAN_VAPROTO on systems supporting
5176 prototype declaration of functions with a variable number of
5177 arguments. See also prototype.
5179 vendorarch (vendorarch.U):
5180 This variable contains the value of the PERL_VENDORARCH symbol.
5181 It may have a ~ on the front.
5182 The standard distribution will put nothing in this directory.
5183 Vendors who distribute perl may wish to place their own
5184 architecture-dependent modules and extensions in this directory with
5185 MakeMaker Makefile.PL INSTALLDIRS=vendor
5186 or equivalent. See INSTALL for details.
5188 vendorarchexp (vendorarch.U):
5189 This variable is the ~name expanded version of vendorarch, so that you
5190 may use it directly in Makefiles or shell scripts.
5192 vendorbin (vendorbin.U):
5193 This variable contains the eventual value of the VENDORBIN symbol.
5194 It may have a ~ on the front.
5195 The standard distribution will put nothing in this directory.
5196 Vendors who distribute perl may wish to place additional
5197 binaries in this directory with
5198 MakeMaker Makefile.PL INSTALLDIRS=vendor
5199 or equivalent. See INSTALL for details.
5201 vendorbinexp (vendorbin.U):
5202 This variable is the ~name expanded version of vendorbin, so that you
5203 may use it directly in Makefiles or shell scripts.
5205 vendorhtml1dir (vendorhtml1dir.U):
5206 This variable contains the name of the directory for html
5207 pages. It may have a ~ on the front.
5208 The standard distribution will put nothing in this directory.
5209 Vendors who distribute perl may wish to place their own
5210 html pages in this directory with
5211 MakeMaker Makefile.PL INSTALLDIRS=vendor
5212 or equivalent. See INSTALL for details.
5214 vendorhtml1direxp (vendorhtml1dir.U):
5215 This variable is the ~name expanded version of vendorhtml1dir, so that you
5216 may use it directly in Makefiles or shell scripts.
5218 vendorhtml3dir (vendorhtml3dir.U):
5219 This variable contains the name of the directory for html
5220 library pages. It may have a ~ on the front.
5221 The standard distribution will put nothing in this directory.
5222 Vendors who distribute perl may wish to place their own
5223 html pages for modules and extensions in this directory with
5224 MakeMaker Makefile.PL INSTALLDIRS=vendor
5225 or equivalent. See INSTALL for details.
5227 vendorhtml3direxp (vendorhtml3dir.U):
5228 This variable is the ~name expanded version of vendorhtml3dir, so that you
5229 may use it directly in Makefiles or shell scripts.
5231 vendorlib (vendorlib.U):
5232 This variable contains the eventual value of the VENDORLIB symbol,
5233 which is the name of the private library for this package.
5234 The standard distribution will put nothing in this directory.
5235 Vendors who distribute perl may wish to place their own
5236 modules in this directory with
5237 MakeMaker Makefile.PL INSTALLDIRS=vendor
5238 or equivalent. See INSTALL for details.
5240 vendorlib_stem (vendorlib.U):
5241 This variable is $vendorlibexp with any trailing version-specific component
5242 removed. The elements in inc_version_list (inc_version_list.U) can
5243 be tacked onto this variable to generate a list of directories to search.
5245 vendorlibexp (vendorlib.U):
5246 This variable is the ~name expanded version of vendorlib, so that you
5247 may use it directly in Makefiles or shell scripts.
5249 vendorman1dir (vendorman1dir.U):
5250 This variable contains the name of the directory for man1
5251 pages. It may have a ~ on the front.
5252 The standard distribution will put nothing in this directory.
5253 Vendors who distribute perl may wish to place their own
5254 man1 pages in this directory with
5255 MakeMaker Makefile.PL INSTALLDIRS=vendor
5256 or equivalent. See INSTALL for details.
5258 vendorman1direxp (vendorman1dir.U):
5259 This variable is the ~name expanded version of vendorman1dir, so that you
5260 may use it directly in Makefiles or shell scripts.
5262 vendorman3dir (vendorman3dir.U):
5263 This variable contains the name of the directory for man3
5264 pages. It may have a ~ on the front.
5265 The standard distribution will put nothing in this directory.
5266 Vendors who distribute perl may wish to place their own
5267 man3 pages in this directory with
5268 MakeMaker Makefile.PL INSTALLDIRS=vendor
5269 or equivalent. See INSTALL for details.
5271 vendorman3direxp (vendorman3dir.U):
5272 This variable is the ~name expanded version of vendorman3dir, so that you
5273 may use it directly in Makefiles or shell scripts.
5275 vendorprefix (vendorprefix.U):
5276 This variable holds the full absolute path of the directory below
5277 which the vendor will install add-on packages.
5278 See INSTALL for usage and examples.
5280 vendorprefixexp (vendorprefix.U):
5281 This variable holds the full absolute path of the directory below
5282 which the vendor will install add-on packages. Derived from vendorprefix.
5284 vendorscript (vendorscript.U):
5285 This variable contains the eventual value of the VENDORSCRIPT symbol.
5286 It may have a ~ on the front.
5287 The standard distribution will put nothing in this directory.
5288 Vendors who distribute perl may wish to place additional
5289 executable scripts in this directory with
5290 MakeMaker Makefile.PL INSTALLDIRS=vendor
5291 or equivalent. See INSTALL for details.
5293 vendorscriptexp (vendorscript.U):
5294 This variable is the ~name expanded version of vendorscript, so that you
5295 may use it directly in Makefiles or shell scripts.
5297 version (patchlevel.U):
5298 The full version number of this package, such as 5.6.1 (or 5_6_1).
5299 This combines revision, patchlevel, and subversion to get the
5300 full version number, including any possible subversions.
5301 This is suitable for use as a directory name, and hence is
5302 filesystem dependent.
5304 version_patchlevel_string (patchlevel.U):
5305 This is a string combining version, subversion and
5306 perl_patchlevel (if perl_patchlevel is non-zero).
5307 It is typically something like
5308 'version 7 subversion 1' or
5309 'version 7 subversion 1 patchlevel 11224'
5310 It is computed here to avoid duplication of code in myconfig.SH
5313 versiononly (versiononly.U):
5314 If set, this symbol indicates that only the version-specific
5315 components of a perl installation should be installed.
5316 This may be useful for making a test installation of a new
5317 version without disturbing the existing installation.
5318 Setting versiononly is equivalent to setting installperl's -v option.
5319 In particular, the non-versioned scripts and programs such as
5320 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5321 (see INSTALL for a more complete list). Nor are the man
5323 Usually, this is undef.
5326 This variable is defined but not used by Configure.
5327 The value is the empty string and is not useful.
5329 voidflags (voidflags.U):
5330 This variable contains the eventual value of the VOIDFLAGS symbol,
5331 which indicates how much support of the void type is given by this
5332 compiler. See VOIDFLAGS for more info.
5335 This variable holds extra path (space-separated) used to find
5336 libraries on this platform, for example CPU-specific libraries
5337 (on multi-CPU platforms) may be listed here.
5340 This variable holds the name of the compiler compiler we
5341 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5344 This variable contains any additional yacc flags desired by the
5345 user. It is up to the Makefile to use this.
5348 This variable is defined but not used by Configure.
5349 The value is the empty string and is not useful.
5352 This variable is used internally by Configure to determine the
5353 full pathname (if any) of the zip program. After Configure runs,
5354 the value is reset to a plain "zip" and is not useful.