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 Perl 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 archname64 (use64bits.U):
116 This variable is used for the 64-bitness part of $archname.
118 archname (archname.U):
119 This variable is a short name to characterize the current
120 architecture. It is used mainly to construct the default archlib.
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 a plain '' 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 is the same as the bin variable, but is filename expanded at
155 configuration time, for use in your makefiles.
158 This variable is used internally by Configure to determine the
159 full pathname (if any) of the bison program. After Configure runs,
160 the value is reset to a plain "bison" and is not useful.
163 This variable is used internally by Configure to determine the
164 full pathname (if any) of the byacc program. After Configure runs,
165 the value is reset to a plain "byacc" and is not useful.
167 byteorder (byteorder.U):
168 This variable holds the byte order in a UV. In the following,
169 larger digits indicate more significance. The variable byteorder
170 is either 4321 on a big-endian machine, or 1234 on a little-endian,
171 or 87654321 on a Cray ... or 3412 with weird order !
174 This variable contains the \c string if that is what causes the echo
175 command to suppress newline. Otherwise it is null. Correct usage is
176 $echo $n "prompt for a question: $c".
178 castflags (d_castneg.U):
179 This variable contains a flag that precise difficulties the
180 compiler has casting odd floating values to unsigned long:
182 1 = couldn't cast < 0
183 2 = couldn't cast >= 0x80000000
184 4 = couldn't cast in argument expression list
187 This variable is used internally by Configure to determine the
188 full pathname (if any) of the cat program. After Configure runs,
189 the value is reset to a plain "cat" and is not useful.
192 This variable holds the name of a command to execute a C compiler which
193 can resolve multiple global references that happen to have the same
194 name. Usual values are 'cc' and 'gcc'.
195 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
197 cccdlflags (dlsrc.U):
198 This variable contains any special flags that might need to be
199 passed with 'cc -c' to compile modules to be used to create a shared
200 library that will be used for dynamic loading. For hpux, this
201 should be +z. It is up to the makefile to use it.
204 This variable contains any special flags that might need to be
205 passed to cc to link with a shared library for dynamic loading.
206 It is up to the makefile to use it. For sunos 4.1, it should
210 This variable contains any additional C compiler flags desired by
211 the user. It is up to the Makefile to use this.
213 ccflags_uselargefiles (uselfs.U):
214 This variable contains the compiler flags needed by large file builds
215 and added to ccflags by hints files.
218 This can set either by hints files or by Configure. If using
219 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
220 Some platforms, however, make good use of this by storing the
221 flavor of the C compiler being used here. For example if using
222 the Sun WorkShop suite, ccname will be 'workshop'.
224 ccsymbols (Cppsym.U):
225 The variable contains the symbols defined by the C compiler alone.
226 The symbols defined by cpp or by cc when it calls cpp are not in
227 this list, see cppsymbols and cppccsymbols.
228 The list is a space-separated list of symbol=value tokens.
230 ccversion (Checkcc.U):
231 This can set either by hints files or by Configure. If using
232 a (non-gcc) vendor cc, this variable may contain a version for
236 Login name of the person who ran the Configure script and answered the
237 questions. This is used to tag both config.sh and config_h.SH.
239 cf_email (cf_email.U):
240 Electronic mail address of the person who ran Configure. This can be
241 used by units that require the user's e-mail, like MailList.U.
244 Holds the output of the "date" command when the configuration file was
245 produced. This is used to tag both config.sh and config_h.SH.
247 charsize (charsize.U):
248 This variable contains the value of the CHARSIZE symbol, which
249 indicates to the C program how many bytes there are in a character.
252 This variable is defined but not used by Configure.
253 The value is a plain '' and is not useful.
256 This variable is used internally by Configure to determine the
257 full pathname (if any) of the chmod program. After Configure runs,
258 the value is reset to a plain "chmod" and is not useful.
261 This variable is defined but not used by Configure.
262 The value is a plain '' and is not useful.
264 clocktype (d_times.U):
265 This variable holds the type returned by times(). It can be long,
266 or clock_t on BSD sites (in which case <sys/types.h> should be
270 This variable is used internally by Configure to determine the
271 full pathname (if any) of the comm program. After Configure runs,
272 the value is reset to a plain "comm" and is not useful.
275 This variable is defined but not used by Configure.
276 The value is a plain '' and is not useful.
278 contains (contains.U):
279 This variable holds the command to do a grep with a proper return
280 status. On most sane systems it is simply "grep". On insane systems
281 it is a grep followed by a cat followed by a test. This variable
282 is primarily for the use of other Configure units.
285 This variable is used internally by Configure to determine the
286 full pathname (if any) of the cp program. After Configure runs,
287 the value is reset to a plain "cp" and is not useful.
290 This variable is defined but not used by Configure.
291 The value is a plain '' and is not useful.
294 This variable is used internally by Configure to determine the
295 full pathname (if any) of the cpp program. After Configure runs,
296 the value is reset to a plain "cpp" and is not useful.
298 cpp_stuff (cpp_stuff.U):
299 This variable contains an identification of the catenation mechanism
300 used by the C preprocessor.
302 cppccsymbols (Cppsym.U):
303 The variable contains the symbols defined by the C compiler
304 when it calls cpp. The symbols defined by the cc alone or cpp
305 alone are not in this list, see ccsymbols and cppsymbols.
306 The list is a space-separated list of symbol=value tokens.
308 cppflags (ccflags.U):
309 This variable holds the flags that will be passed to the C pre-
310 processor. It is up to the Makefile to use it.
312 cpplast (cppstdin.U):
313 This variable has the same functionality as cppminus, only it applies
314 to cpprun and not cppstdin.
316 cppminus (cppstdin.U):
317 This variable contains the second part of the string which will invoke
318 the C preprocessor on the standard input and produce to standard
319 output. This variable will have the value "-" if cppstdin needs
320 a minus to specify standard input, otherwise the value is "".
323 This variable contains the command which will invoke a C preprocessor
324 on standard input and put the output to stdout. It is guaranteed not
325 to be a wrapper and may be a null string if no preprocessor can be
326 made directly available. This preprocessor might be different from the
327 one used by the C compiler. Don't forget to append cpplast after the
328 preprocessor options.
330 cppstdin (cppstdin.U):
331 This variable contains the command which will invoke the C
332 preprocessor on standard input and put the output to stdout.
333 It is primarily used by other Configure units that ask about
334 preprocessor symbols.
336 cppsymbols (Cppsym.U):
337 The variable contains the symbols defined by the C preprocessor
338 alone. The symbols defined by cc or by cc when it calls cpp are
339 not in this list, see ccsymbols and cppccsymbols.
340 The list is a space-separated list of symbol=value tokens.
342 crypt_r_proto (d_crypt_r.U):
343 This variable encodes the prototype of crypt_r.
344 It is zero if d_crypt_r is undef, and one of the
345 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
348 cryptlib (d_crypt.U):
349 This variable holds -lcrypt or the path to a libcrypt.a archive if
350 the crypt() function is not defined in the standard C library. It is
351 up to the Makefile to use this.
354 This variable is used internally by Configure to determine the
355 full pathname (if any) of the csh program. After Configure runs,
356 the value is reset to a plain "csh" and is not useful.
358 ctermid_r_proto (d_ctermid_r.U):
359 This variable encodes the prototype of ctermid_r.
360 It is zero if d_ctermid_r is undef, and one of the
361 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
364 ctime_r_proto (d_ctime_r.U):
365 This variable encodes the prototype of ctime_r.
366 It is zero if d_ctime_r is undef, and one of the
367 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
370 d__fwalk (d__fwalk.U):
371 This variable conditionally defines HAS__FWALK if _fwalk() is
372 available to apply a function to all the file handles.
374 d_access (d_access.U):
375 This variable conditionally defines HAS_ACCESS if the access() system
376 call is available to check for access permissions using real IDs.
378 d_accessx (d_accessx.U):
379 This variable conditionally defines the HAS_ACCESSX symbol, which
380 indicates to the C program that the accessx() routine is available.
383 This variable conditionally defines the HAS_ALARM symbol, which
384 indicates to the C program that the alarm() routine is available.
386 d_archlib (archlib.U):
387 This variable conditionally defines ARCHLIB to hold the pathname
388 of architecture-dependent library files for $package. If
389 $archlib is the same as $privlib, then this is set to undef.
391 d_asctime_r (d_asctime_r.U):
392 This variable conditionally defines the HAS_ASCTIME_R symbol,
393 which indicates to the C program that the asctime_r()
394 routine is available.
397 This variable conditionally defines the HAS_ATOLF symbol, which
398 indicates to the C program that the atolf() routine is available.
401 This variable conditionally defines the HAS_ATOLL symbol, which
402 indicates to the C program that the atoll() routine is available.
404 d_attribut (d_attribut.U):
405 This variable conditionally defines HASATTRIBUTE, which
406 indicates the C compiler can check for function attributes,
407 such as printf formats.
410 This variable conditionally defines the HAS_BCMP symbol if
411 the bcmp() routine is available to compare strings.
414 This variable conditionally defines the HAS_BCOPY symbol if
415 the bcopy() routine is available to copy strings.
418 This symbol conditionally defines the symbol BSD when running on a
421 d_bsdgetpgrp (d_getpgrp.U):
422 This variable conditionally defines USE_BSD_GETPGRP if
423 getpgrp needs one arguments whereas USG one needs none.
425 d_bsdsetpgrp (d_setpgrp.U):
426 This variable conditionally defines USE_BSD_SETPGRP if
427 setpgrp needs two arguments whereas USG one needs none.
428 See also d_setpgid for a POSIX interface.
431 This variable conditionally defines the HAS_BZERO symbol if
432 the bzero() routine is available to set memory to 0.
434 d_casti32 (d_casti32.U):
435 This variable conditionally defines CASTI32, which indicates
436 whether the C compiler can cast large floats to 32-bit ints.
438 d_castneg (d_castneg.U):
439 This variable conditionally defines CASTNEG, which indicates
440 wether the C compiler can cast negative float to unsigned.
442 d_charvspr (d_vprintf.U):
443 This variable conditionally defines CHARVSPRINTF if this system
444 has vsprintf returning type (char*). The trend seems to be to
445 declare it as "int vsprintf()".
448 This variable conditionally defines the HAS_CHOWN symbol, which
449 indicates to the C program that the chown() routine is available.
451 d_chroot (d_chroot.U):
452 This variable conditionally defines the HAS_CHROOT symbol, which
453 indicates to the C program that the chroot() routine is available.
455 d_chsize (d_chsize.U):
456 This variable conditionally defines the CHSIZE symbol, which
457 indicates to the C program that the chsize() routine is available
458 to truncate files. You might need a -lx to get this routine.
461 This variable conditionally defines the HAS_CLASS symbol, which
462 indicates to the C program that the class() routine is available.
464 d_closedir (d_closedir.U):
465 This variable conditionally defines HAS_CLOSEDIR if closedir() is
468 d_cmsghdr_s (d_cmsghdr_s.U):
469 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
470 which indicates that the struct cmsghdr is supported.
473 This variable conditionally defines the HASCONST symbol, which
474 indicates to the C program that this C compiler knows about the
478 This variable conditionally defines the CRYPT symbol, which
479 indicates to the C program that the crypt() routine is available
480 to encrypt passwords and the like.
482 d_crypt_r (d_crypt_r.U):
483 This variable conditionally defines the HAS_CRYPT_R symbol,
484 which indicates to the C program that the crypt_r()
485 routine is available.
488 This variable conditionally defines the CSH symbol, which
489 indicates to the C program that the C-shell exists.
491 d_ctermid_r (d_ctermid_r.U):
492 This variable conditionally defines the HAS_CTERMID_R symbol,
493 which indicates to the C program that the ctermid_r()
494 routine is available.
496 d_ctime_r (d_ctime_r.U):
497 This variable conditionally defines the HAS_CTIME_R symbol,
498 which indicates to the C program that the ctime_r()
499 routine is available.
501 d_cuserid (d_cuserid.U):
502 This variable conditionally defines the HAS_CUSERID symbol, which
503 indicates to the C program that the cuserid() routine is available
504 to get character login names.
506 d_dbl_dig (d_dbl_dig.U):
507 This variable conditionally defines d_dbl_dig if this system's
508 header files provide DBL_DIG, which is the number of significant
509 digits in a double precision number.
511 d_dbminitproto (d_dbminitproto.U):
512 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
513 which indicates to the C program that the system provides
514 a prototype for the dbminit() function. Otherwise, it is
515 up to the program to supply one.
517 d_difftime (d_difftime.U):
518 This variable conditionally defines the HAS_DIFFTIME symbol, which
519 indicates to the C program that the difftime() routine is available.
522 This variable conditionally defines the HAS_DIRFD constant,
523 which indicates to the C program that dirfd() is available
524 to return the file descriptor of a directory stream.
526 d_dirnamlen (i_dirent.U):
527 This variable conditionally defines DIRNAMLEN, which indicates
528 to the C program that the length of directory entry names is
529 provided by a d_namelen field.
531 d_dlerror (d_dlerror.U):
532 This variable conditionally defines the HAS_DLERROR symbol, which
533 indicates to the C program that the dlerror() routine is available.
535 d_dlopen (d_dlopen.U):
536 This variable conditionally defines the HAS_DLOPEN symbol, which
537 indicates to the C program that the dlopen() routine is available.
539 d_dlsymun (d_dlsymun.U):
540 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
541 indicates that we need to prepend an underscore to the symbol
542 name before calling dlsym().
544 d_dosuid (d_dosuid.U):
545 This variable conditionally defines the symbol DOSUID, which
546 tells the C program that it should insert setuid emulation code
547 on hosts which have setuid #! scripts disabled.
549 d_drand48_r (d_drand48_r.U):
550 This variable conditionally defines the HAS_DRAND48_R symbol,
551 which indicates to the C program that the drand48_r()
552 routine is available.
554 d_drand48proto (d_drand48proto.U):
555 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
556 which indicates to the C program that the system provides
557 a prototype for the drand48() function. Otherwise, it is
558 up to the program to supply one.
561 This variable conditionally defines HAS_DUP2 if dup2() is
562 available to duplicate file descriptors.
564 d_eaccess (d_eaccess.U):
565 This variable conditionally defines the HAS_EACCESS symbol, which
566 indicates to the C program that the eaccess() routine is available.
568 d_endgrent (d_endgrent.U):
569 This variable conditionally defines the HAS_ENDGRENT symbol, which
570 indicates to the C program that the endgrent() routine is available
571 for sequential access of the group database.
573 d_endgrent_r (d_endgrent_r.U):
574 This variable conditionally defines the HAS_ENDGRENT_R symbol,
575 which indicates to the C program that the endgrent_r()
576 routine is available.
578 d_endhent (d_endhent.U):
579 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
580 available to close whatever was being used for host queries.
582 d_endhostent_r (d_endhostent_r.U):
583 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
584 which indicates to the C program that the endhostent_r()
585 routine is available.
587 d_endnent (d_endnent.U):
588 This variable conditionally defines HAS_ENDNETENT if endnetent() is
589 available to close whatever was being used for network queries.
591 d_endnetent_r (d_endnetent_r.U):
592 This variable conditionally defines the HAS_ENDNETENT_R symbol,
593 which indicates to the C program that the endnetent_r()
594 routine is available.
596 d_endpent (d_endpent.U):
597 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
598 available to close whatever was being used for protocol queries.
600 d_endprotoent_r (d_endprotoent_r.U):
601 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
602 which indicates to the C program that the endprotoent_r()
603 routine is available.
605 d_endpwent (d_endpwent.U):
606 This variable conditionally defines the HAS_ENDPWENT symbol, which
607 indicates to the C program that the endpwent() routine is available
608 for sequential access of the passwd database.
610 d_endpwent_r (d_endpwent_r.U):
611 This variable conditionally defines the HAS_ENDPWENT_R symbol,
612 which indicates to the C program that the endpwent_r()
613 routine is available.
615 d_endsent (d_endsent.U):
616 This variable conditionally defines HAS_ENDSERVENT if endservent() is
617 available to close whatever was being used for service queries.
619 d_endservent_r (d_endservent_r.U):
620 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
621 which indicates to the C program that the endservent_r()
622 routine is available.
624 d_eofnblk (nblock_io.U):
625 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
626 when reading from a non-blocking I/O source.
629 This variable conditionally defines the symbols EUNICE and VAX, which
630 alerts the C program that it must deal with ideosyncracies of VMS.
632 d_fchdir (d_fchdir.U):
633 This variable conditionally defines the HAS_FCHDIR symbol, which
634 indicates to the C program that the fchdir() routine is available.
636 d_fchmod (d_fchmod.U):
637 This variable conditionally defines the HAS_FCHMOD symbol, which
638 indicates to the C program that the fchmod() routine is available
639 to change mode of opened files.
641 d_fchown (d_fchown.U):
642 This variable conditionally defines the HAS_FCHOWN symbol, which
643 indicates to the C program that the fchown() routine is available
644 to change ownership of opened files.
647 This variable conditionally defines the HAS_FCNTL symbol, and indicates
648 whether the fcntl() function exists
650 d_fcntl_can_lock (d_fcntl_can_lock.U):
651 This variable conditionally defines the FCNTL_CAN_LOCK symbol
652 and indicates whether file locking with fcntl() works.
654 d_fd_macros (d_fd_set.U):
655 This variable contains the eventual value of the HAS_FD_MACROS symbol,
656 which indicates if your C compiler knows about the macros which
657 manipulate an fd_set.
659 d_fd_set (d_fd_set.U):
660 This variable contains the eventual value of the HAS_FD_SET symbol,
661 which indicates if your C compiler knows about the fd_set typedef.
663 d_fds_bits (d_fd_set.U):
664 This variable contains the eventual value of the HAS_FDS_BITS symbol,
665 which indicates if your fd_set typedef contains the fds_bits member.
666 If you have an fd_set typedef, but the dweebs who installed it did
667 a half-fast job and neglected to provide the macros to manipulate
668 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
670 d_fgetpos (d_fgetpos.U):
671 This variable conditionally defines HAS_FGETPOS if fgetpos() is
672 available to get the file position indicator.
674 d_finite (d_finite.U):
675 This variable conditionally defines the HAS_FINITE symbol, which
676 indicates to the C program that the finite() routine is available.
678 d_finitel (d_finitel.U):
679 This variable conditionally defines the HAS_FINITEL symbol, which
680 indicates to the C program that the finitel() routine is available.
682 d_flexfnam (d_flexfnam.U):
683 This variable conditionally defines the FLEXFILENAMES symbol, which
684 indicates that the system supports filenames longer than 14 characters.
687 This variable conditionally defines HAS_FLOCK if flock() is
688 available to do file locking.
690 d_flockproto (d_flockproto.U):
691 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
692 which indicates to the C program that the system provides
693 a prototype for the flock() function. Otherwise, it is
694 up to the program to supply one.
697 This variable conditionally defines the HAS_FORK symbol, which
698 indicates to the C program that the fork() routine is available.
700 d_fp_class (d_fp_class.U):
701 This variable conditionally defines the HAS_FP_CLASS symbol, which
702 indicates to the C program that the fp_class() routine is available.
704 d_fpathconf (d_pathconf.U):
705 This variable conditionally defines the HAS_FPATHCONF symbol, which
706 indicates to the C program that the pathconf() routine is available
707 to determine file-system related limits and options associated
708 with a given open file descriptor.
710 d_fpclass (d_fpclass.U):
711 This variable conditionally defines the HAS_FPCLASS symbol, which
712 indicates to the C program that the fpclass() routine is available.
714 d_fpclassify (d_fpclassify.U):
715 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
716 indicates to the C program that the fpclassify() routine is available.
718 d_fpclassl (d_fpclassl.U):
719 This variable conditionally defines the HAS_FPCLASSL symbol, which
720 indicates to the C program that the fpclassl() routine is available.
722 d_fpos64_t (d_fpos64_t.U):
723 This symbol will be defined if the C compiler supports fpos64_t.
725 d_frexpl (d_frexpl.U):
726 This variable conditionally defines the HAS_FREXPL symbol, which
727 indicates to the C program that the frexpl() routine is available.
729 d_fs_data_s (d_fs_data_s.U):
730 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
731 which indicates that the struct fs_data is supported.
733 d_fseeko (d_fseeko.U):
734 This variable conditionally defines the HAS_FSEEKO symbol, which
735 indicates to the C program that the fseeko() routine is available.
737 d_fsetpos (d_fsetpos.U):
738 This variable conditionally defines HAS_FSETPOS if fsetpos() is
739 available to set the file position indicator.
741 d_fstatfs (d_fstatfs.U):
742 This variable conditionally defines the HAS_FSTATFS symbol, which
743 indicates to the C program that the fstatfs() routine is available.
745 d_fstatvfs (d_statvfs.U):
746 This variable conditionally defines the HAS_FSTATVFS symbol, which
747 indicates to the C program that the fstatvfs() routine is available.
750 This variable conditionally defines the HAS_FSYNC symbol, which
751 indicates to the C program that the fsync() routine is available.
753 d_ftello (d_ftello.U):
754 This variable conditionally defines the HAS_FTELLO symbol, which
755 indicates to the C program that the ftello() routine is available.
758 This variable conditionally defines the HAS_FTIME symbol, which indicates
759 that the ftime() routine exists. The ftime() routine is basically
760 a sub-second accuracy clock.
762 d_Gconvert (d_gconvert.U):
763 This variable holds what Gconvert is defined as to convert
764 floating point numbers into strings. By default, Configure
765 sets this macro to use the first of gconvert, gcvt, or sprintf
766 that pass sprintf-%g-like behaviour tests. If perl is using
767 long doubles, the macro uses the first of the following
768 functions that pass Configure's tests: qgcvt, sprintf (if
769 Configure knows how to make sprintf format long doubles--see
770 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
771 The gconvert_preference and gconvert_ld_preference variables
772 can be used to alter Configure's preferences, for doubles and
773 long doubles, respectively. If present, they contain a
774 space-separated list of one or more of the above function
775 names in the order they should be tried.
777 d_Gconvert may be set to override Configure with a platform-
778 specific function. If this function expects a double, a
779 different value may need to be set by the uselongdouble.cbu
780 call-back unit so that long doubles can be formatted without
783 d_getcwd (d_getcwd.U):
784 This variable conditionally defines the HAS_GETCWD symbol, which
785 indicates to the C program that the getcwd() routine is available
786 to get the current working directory.
788 d_getespwnam (d_getespwnam.U):
789 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
790 available to retrieve enchanced (shadow) password entries by name.
792 d_getfsstat (d_getfsstat.U):
793 This variable conditionally defines the HAS_GETFSSTAT symbol, which
794 indicates to the C program that the getfsstat() routine is available.
796 d_getgrent (d_getgrent.U):
797 This variable conditionally defines the HAS_GETGRENT symbol, which
798 indicates to the C program that the getgrent() routine is available
799 for sequential access of the group database.
801 d_getgrent_r (d_getgrent_r.U):
802 This variable conditionally defines the HAS_GETGRENT_R symbol,
803 which indicates to the C program that the getgrent_r()
804 routine is available.
806 d_getgrgid_r (d_getgrgid_r.U):
807 This variable conditionally defines the HAS_GETGRGID_R symbol,
808 which indicates to the C program that the getgrgid_r()
809 routine is available.
811 d_getgrnam_r (d_getgrnam_r.U):
812 This variable conditionally defines the HAS_GETGRNAM_R symbol,
813 which indicates to the C program that the getgrnam_r()
814 routine is available.
816 d_getgrps (d_getgrps.U):
817 This variable conditionally defines the HAS_GETGROUPS symbol, which
818 indicates to the C program that the getgroups() routine is available
819 to get the list of process groups.
821 d_gethbyaddr (d_gethbyad.U):
822 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
823 indicates to the C program that the gethostbyaddr() routine is available
824 to look up hosts by their IP addresses.
826 d_gethbyname (d_gethbynm.U):
827 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
828 indicates to the C program that the gethostbyname() routine is available
829 to look up host names in some data base or other.
831 d_gethent (d_gethent.U):
832 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
833 available to look up host names in some data base or another.
835 d_gethname (d_gethname.U):
836 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
837 indicates to the C program that the gethostname() routine may be
838 used to derive the host name.
840 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
841 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
842 which indicates to the C program that the gethostbyaddr_r()
843 routine is available.
845 d_gethostbyname_r (d_gethostbyname_r.U):
846 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
847 which indicates to the C program that the gethostbyname_r()
848 routine is available.
850 d_gethostent_r (d_gethostent_r.U):
851 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
852 which indicates to the C program that the gethostent_r()
853 routine is available.
855 d_gethostprotos (d_gethostprotos.U):
856 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
857 which indicates to the C program that <netdb.h> supplies
858 prototypes for the various gethost*() functions.
859 See also netdbtype.U for probing for various netdb types.
861 d_getitimer (d_getitimer.U):
862 This variable conditionally defines the HAS_GETITIMER symbol, which
863 indicates to the C program that the getitimer() routine is available.
865 d_getlogin (d_getlogin.U):
866 This variable conditionally defines the HAS_GETLOGIN symbol, which
867 indicates to the C program that the getlogin() routine is available
868 to get the login name.
870 d_getlogin_r (d_getlogin_r.U):
871 This variable conditionally defines the HAS_GETLOGIN_R symbol,
872 which indicates to the C program that the getlogin_r()
873 routine is available.
875 d_getmnt (d_getmnt.U):
876 This variable conditionally defines the HAS_GETMNT symbol, which
877 indicates to the C program that the getmnt() routine is available
878 to retrieve one or more mount info blocks by filename.
880 d_getmntent (d_getmntent.U):
881 This variable conditionally defines the HAS_GETMNTENT symbol, which
882 indicates to the C program that the getmntent() routine is available
883 to iterate through mounted files to get their mount info.
885 d_getnbyaddr (d_getnbyad.U):
886 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
887 indicates to the C program that the getnetbyaddr() routine is available
888 to look up networks by their IP addresses.
890 d_getnbyname (d_getnbynm.U):
891 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
892 indicates to the C program that the getnetbyname() routine is available
893 to look up networks by their names.
895 d_getnent (d_getnent.U):
896 This variable conditionally defines HAS_GETNETENT if getnetent() is
897 available to look up network names in some data base or another.
899 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
900 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
901 which indicates to the C program that the getnetbyaddr_r()
902 routine is available.
904 d_getnetbyname_r (d_getnetbyname_r.U):
905 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
906 which indicates to the C program that the getnetbyname_r()
907 routine is available.
909 d_getnetent_r (d_getnetent_r.U):
910 This variable conditionally defines the HAS_GETNETENT_R symbol,
911 which indicates to the C program that the getnetent_r()
912 routine is available.
914 d_getnetprotos (d_getnetprotos.U):
915 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
916 which indicates to the C program that <netdb.h> supplies
917 prototypes for the various getnet*() functions.
918 See also netdbtype.U for probing for various netdb types.
920 d_getpagsz (d_getpagsz.U):
921 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
922 is available to get the system page size.
924 d_getpbyname (d_getprotby.U):
925 This variable conditionally defines the HAS_GETPROTOBYNAME
926 symbol, which indicates to the C program that the
927 getprotobyname() routine is available to look up protocols
930 d_getpbynumber (d_getprotby.U):
931 This variable conditionally defines the HAS_GETPROTOBYNUMBER
932 symbol, which indicates to the C program that the
933 getprotobynumber() routine is available to look up protocols
936 d_getpent (d_getpent.U):
937 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
938 available to look up protocols in some data base or another.
940 d_getpgid (d_getpgid.U):
941 This variable conditionally defines the HAS_GETPGID symbol, which
942 indicates to the C program that the getpgid(pid) function
943 is available to get the process group id.
945 d_getpgrp2 (d_getpgrp2.U):
946 This variable conditionally defines the HAS_GETPGRP2 symbol, which
947 indicates to the C program that the getpgrp2() (as in DG/UX) routine
948 is available to get the current process group.
950 d_getpgrp (d_getpgrp.U):
951 This variable conditionally defines HAS_GETPGRP if getpgrp() is
952 available to get the current process group.
954 d_getppid (d_getppid.U):
955 This variable conditionally defines the HAS_GETPPID symbol, which
956 indicates to the C program that the getppid() routine is available
957 to get the parent process ID.
959 d_getprior (d_getprior.U):
960 This variable conditionally defines HAS_GETPRIORITY if getpriority()
961 is available to get a process's priority.
963 d_getprotobyname_r (d_getprotobyname_r.U):
964 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
965 which indicates to the C program that the getprotobyname_r()
966 routine is available.
968 d_getprotobynumber_r (d_getprotobynumber_r.U):
969 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
970 which indicates to the C program that the getprotobynumber_r()
971 routine is available.
973 d_getprotoent_r (d_getprotoent_r.U):
974 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
975 which indicates to the C program that the getprotoent_r()
976 routine is available.
978 d_getprotoprotos (d_getprotoprotos.U):
979 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
980 which indicates to the C program that <netdb.h> supplies
981 prototypes for the various getproto*() functions.
982 See also netdbtype.U for probing for various netdb types.
984 d_getprpwnam (d_getprpwnam.U):
985 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
986 available to retrieve protected (shadow) password entries by name.
988 d_getpwent (d_getpwent.U):
989 This variable conditionally defines the HAS_GETPWENT symbol, which
990 indicates to the C program that the getpwent() routine is available
991 for sequential access of the passwd database.
993 d_getpwent_r (d_getpwent_r.U):
994 This variable conditionally defines the HAS_GETPWENT_R symbol,
995 which indicates to the C program that the getpwent_r()
996 routine is available.
998 d_getpwnam_r (d_getpwnam_r.U):
999 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1000 which indicates to the C program that the getpwnam_r()
1001 routine is available.
1003 d_getpwuid_r (d_getpwuid_r.U):
1004 This variable conditionally defines the HAS_GETPWUID_R symbol,
1005 which indicates to the C program that the getpwuid_r()
1006 routine is available.
1008 d_getsbyname (d_getsrvby.U):
1009 This variable conditionally defines the HAS_GETSERVBYNAME
1010 symbol, which indicates to the C program that the
1011 getservbyname() routine is available to look up services
1014 d_getsbyport (d_getsrvby.U):
1015 This variable conditionally defines the HAS_GETSERVBYPORT
1016 symbol, which indicates to the C program that the
1017 getservbyport() routine is available to look up services
1020 d_getsent (d_getsent.U):
1021 This variable conditionally defines HAS_GETSERVENT if getservent() is
1022 available to look up network services in some data base or another.
1024 d_getservbyname_r (d_getservbyname_r.U):
1025 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1026 which indicates to the C program that the getservbyname_r()
1027 routine is available.
1029 d_getservbyport_r (d_getservbyport_r.U):
1030 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1031 which indicates to the C program that the getservbyport_r()
1032 routine is available.
1034 d_getservent_r (d_getservent_r.U):
1035 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1036 which indicates to the C program that the getservent_r()
1037 routine is available.
1039 d_getservprotos (d_getservprotos.U):
1040 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1041 which indicates to the C program that <netdb.h> supplies
1042 prototypes for the various getserv*() functions.
1043 See also netdbtype.U for probing for various netdb types.
1045 d_getspnam (d_getspnam.U):
1046 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1047 available to retrieve SysV shadow password entries by name.
1049 d_getspnam_r (d_getspnam_r.U):
1050 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1051 which indicates to the C program that the getspnam_r()
1052 routine is available.
1054 d_gettimeod (d_ftime.U):
1055 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1056 indicates that the gettimeofday() system call exists (to obtain a
1057 sub-second accuracy clock). You should probably include <sys/resource.h>.
1059 d_gmtime_r (d_gmtime_r.U):
1060 This variable conditionally defines the HAS_GMTIME_R symbol,
1061 which indicates to the C program that the gmtime_r()
1062 routine is available.
1064 d_gnulibc (d_gnulibc.U):
1065 Defined if we're dealing with the GNU C Library.
1067 d_grpasswd (i_grp.U):
1068 This variable conditionally defines GRPASSWD, which indicates
1069 that struct group in <grp.h> contains gr_passwd.
1071 d_hasmntopt (d_hasmntopt.U):
1072 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1073 indicates to the C program that the hasmntopt() routine is available
1074 to query the mount options of file systems.
1076 d_htonl (d_htonl.U):
1077 This variable conditionally defines HAS_HTONL if htonl() and its
1078 friends are available to do network order byte swapping.
1080 d_index (d_strchr.U):
1081 This variable conditionally defines HAS_INDEX if index() and
1082 rindex() are available for string searching.
1084 d_inetaton (d_inetaton.U):
1085 This variable conditionally defines the HAS_INET_ATON symbol, which
1086 indicates to the C program that the inet_aton() function is available
1087 to parse IP address "dotted-quad" strings.
1089 d_int64_t (d_int64_t.U):
1090 This symbol will be defined if the C compiler supports int64_t.
1092 d_isascii (d_isascii.U):
1093 This variable conditionally defines the HAS_ISASCII constant,
1094 which indicates to the C program that isascii() is available.
1096 d_isfinite (d_isfinite.U):
1097 This variable conditionally defines the HAS_ISFINITE symbol, which
1098 indicates to the C program that the isfinite() routine is available.
1100 d_isinf (d_isinf.U):
1101 This variable conditionally defines the HAS_ISINF symbol, which
1102 indicates to the C program that the isinf() routine is available.
1104 d_isnan (d_isnan.U):
1105 This variable conditionally defines the HAS_ISNAN symbol, which
1106 indicates to the C program that the isnan() routine is available.
1108 d_isnanl (d_isnanl.U):
1109 This variable conditionally defines the HAS_ISNANL symbol, which
1110 indicates to the C program that the isnanl() routine is available.
1112 d_killpg (d_killpg.U):
1113 This variable conditionally defines the HAS_KILLPG symbol, which
1114 indicates to the C program that the killpg() routine is available
1115 to kill process groups.
1117 d_lchown (d_lchown.U):
1118 This variable conditionally defines the HAS_LCHOWN symbol, which
1119 indicates to the C program that the lchown() routine is available
1120 to operate on a symbolic link (instead of following the link).
1122 d_ldbl_dig (d_ldbl_dig.U):
1123 This variable conditionally defines d_ldbl_dig if this system's
1124 header files provide LDBL_DIG, which is the number of significant
1125 digits in a long double precision number.
1128 This variable conditionally defines HAS_LINK if link() is
1129 available to create hard links.
1131 d_localtime_r (d_localtime_r.U):
1132 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1133 which indicates to the C program that the localtime_r()
1134 routine is available.
1136 d_locconv (d_locconv.U):
1137 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1138 available for numeric and monetary formatting conventions.
1140 d_lockf (d_lockf.U):
1141 This variable conditionally defines HAS_LOCKF if lockf() is
1142 available to do file locking.
1144 d_longdbl (d_longdbl.U):
1145 This variable conditionally defines HAS_LONG_DOUBLE if
1146 the long double type is supported.
1148 d_longlong (d_longlong.U):
1149 This variable conditionally defines HAS_LONG_LONG if
1150 the long long type is supported.
1152 d_lseekproto (d_lseekproto.U):
1153 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1154 which indicates to the C program that the system provides
1155 a prototype for the lseek() function. Otherwise, it is
1156 up to the program to supply one.
1158 d_lstat (d_lstat.U):
1159 This variable conditionally defines HAS_LSTAT if lstat() is
1160 available to do file stats on symbolic links.
1162 d_madvise (d_madvise.U):
1163 This variable conditionally defines HAS_MADVISE if madvise() is
1164 available to map a file into memory.
1166 d_mblen (d_mblen.U):
1167 This variable conditionally defines the HAS_MBLEN symbol, which
1168 indicates to the C program that the mblen() routine is available
1169 to find the number of bytes in a multibye character.
1171 d_mbstowcs (d_mbstowcs.U):
1172 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1173 indicates to the C program that the mbstowcs() routine is available
1174 to convert a multibyte string into a wide character string.
1176 d_mbtowc (d_mbtowc.U):
1177 This variable conditionally defines the HAS_MBTOWC symbol, which
1178 indicates to the C program that the mbtowc() routine is available
1179 to convert multibyte to a wide character.
1181 d_memchr (d_memchr.U):
1182 This variable conditionally defines the HAS_MEMCHR symbol, which
1183 indicates to the C program that the memchr() routine is available
1184 to locate characters within a C string.
1186 d_memcmp (d_memcmp.U):
1187 This variable conditionally defines the HAS_MEMCMP symbol, which
1188 indicates to the C program that the memcmp() routine is available
1189 to compare blocks of memory.
1191 d_memcpy (d_memcpy.U):
1192 This variable conditionally defines the HAS_MEMCPY symbol, which
1193 indicates to the C program that the memcpy() routine is available
1194 to copy blocks of memory.
1196 d_memmove (d_memmove.U):
1197 This variable conditionally defines the HAS_MEMMOVE symbol, which
1198 indicates to the C program that the memmove() routine is available
1199 to copy potentatially overlapping blocks of memory.
1201 d_memset (d_memset.U):
1202 This variable conditionally defines the HAS_MEMSET symbol, which
1203 indicates to the C program that the memset() routine is available
1204 to set blocks of memory.
1206 d_mkdir (d_mkdir.U):
1207 This variable conditionally defines the HAS_MKDIR symbol, which
1208 indicates to the C program that the mkdir() routine is available
1209 to create directories..
1211 d_mkdtemp (d_mkdtemp.U):
1212 This variable conditionally defines the HAS_MKDTEMP symbol, which
1213 indicates to the C program that the mkdtemp() routine is available
1214 to exclusively create a uniquely named temporary directory.
1216 d_mkfifo (d_mkfifo.U):
1217 This variable conditionally defines the HAS_MKFIFO symbol, which
1218 indicates to the C program that the mkfifo() routine is available.
1220 d_mkstemp (d_mkstemp.U):
1221 This variable conditionally defines the HAS_MKSTEMP symbol, which
1222 indicates to the C program that the mkstemp() routine is available
1223 to exclusively create and open a uniquely named temporary file.
1225 d_mkstemps (d_mkstemps.U):
1226 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1227 indicates to the C program that the mkstemps() routine is available
1228 to exclusively create and open a uniquely named (with a suffix)
1231 d_mktime (d_mktime.U):
1232 This variable conditionally defines the HAS_MKTIME symbol, which
1233 indicates to the C program that the mktime() routine is available.
1236 This variable conditionally defines HAS_MMAP if mmap() is
1237 available to map a file into memory.
1239 d_modfl (d_modfl.U):
1240 This variable conditionally defines the HAS_MODFL symbol, which
1241 indicates to the C program that the modfl() routine is available.
1243 d_modfl_pow32_bug (d_modfl.U):
1244 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1245 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1246 For example from 4294967303.150000 one would get 4294967302.000000
1247 and 1.150000. The bug has been seen in certain versions of glibc,
1248 release 2.2.2 is known to be okay.
1250 d_mprotect (d_mprotect.U):
1251 This variable conditionally defines HAS_MPROTECT if mprotect() is
1252 available to modify the access protection of a memory mapped file.
1255 This variable conditionally defines the HAS_MSG symbol, which
1256 indicates that the entire msg*(2) library is present.
1258 d_msg_ctrunc (d_socket.U):
1259 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1260 which indicates that the MSG_CTRUNC is available. #ifdef is
1261 not enough because it may be an enum, glibc has been known to do this.
1263 d_msg_dontroute (d_socket.U):
1264 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1265 which indicates that the MSG_DONTROUTE is available. #ifdef is
1266 not enough because it may be an enum, glibc has been known to do this.
1268 d_msg_oob (d_socket.U):
1269 This variable conditionally defines the HAS_MSG_OOB symbol,
1270 which indicates that the MSG_OOB is available. #ifdef is
1271 not enough because it may be an enum, glibc has been known to do this.
1273 d_msg_peek (d_socket.U):
1274 This variable conditionally defines the HAS_MSG_PEEK symbol,
1275 which indicates that the MSG_PEEK is available. #ifdef is
1276 not enough because it may be an enum, glibc has been known to do this.
1278 d_msg_proxy (d_socket.U):
1279 This variable conditionally defines the HAS_MSG_PROXY symbol,
1280 which indicates that the MSG_PROXY is available. #ifdef is
1281 not enough because it may be an enum, glibc has been known to do this.
1283 d_msgctl (d_msgctl.U):
1284 This variable conditionally defines the HAS_MSGCTL symbol, which
1285 indicates to the C program that the msgctl() routine is available.
1287 d_msgget (d_msgget.U):
1288 This variable conditionally defines the HAS_MSGGET symbol, which
1289 indicates to the C program that the msgget() routine is available.
1291 d_msghdr_s (d_msghdr_s.U):
1292 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1293 which indicates that the struct msghdr is supported.
1295 d_msgrcv (d_msgrcv.U):
1296 This variable conditionally defines the HAS_MSGRCV symbol, which
1297 indicates to the C program that the msgrcv() routine is available.
1299 d_msgsnd (d_msgsnd.U):
1300 This variable conditionally defines the HAS_MSGSND symbol, which
1301 indicates to the C program that the msgsnd() routine is available.
1303 d_msync (d_msync.U):
1304 This variable conditionally defines HAS_MSYNC if msync() is
1305 available to synchronize a mapped file.
1307 d_munmap (d_munmap.U):
1308 This variable conditionally defines HAS_MUNMAP if munmap() is
1309 available to unmap a region mapped by mmap().
1311 d_mymalloc (mallocsrc.U):
1312 This variable conditionally defines MYMALLOC in case other parts
1313 of the source want to take special action if MYMALLOC is used.
1314 This may include different sorts of profiling or error detection.
1317 This variable conditionally defines the HAS_NICE symbol, which
1318 indicates to the C program that the nice() routine is available.
1320 d_nl_langinfo (d_nl_langinfo.U):
1321 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1322 indicates to the C program that the nl_langinfo() routine is available.
1324 d_nv_preserves_uv (perlxv.U):
1325 This variable indicates whether a variable of type nvtype
1326 can preserve all the bits a variable of type uvtype.
1328 d_off64_t (d_off64_t.U):
1329 This symbol will be defined if the C compiler supports off64_t.
1331 d_old_pthread_create_joinable (d_pthrattrj.U):
1332 This variable conditionally defines pthread_create_joinable.
1333 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1335 d_oldpthreads (usethreads.U):
1336 This variable conditionally defines the OLD_PTHREADS_API symbol,
1337 and indicates that Perl should be built to use the old
1338 draft POSIX threads API. This is only potentially meaningful if
1341 d_oldsock (d_socket.U):
1342 This variable conditionally defines the OLDSOCKET symbol, which
1343 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1345 d_open3 (d_open3.U):
1346 This variable conditionally defines the HAS_OPEN3 manifest constant,
1347 which indicates to the C program that the 3 argument version of
1348 the open(2) function is available.
1350 d_pathconf (d_pathconf.U):
1351 This variable conditionally defines the HAS_PATHCONF symbol, which
1352 indicates to the C program that the pathconf() routine is available
1353 to determine file-system related limits and options associated
1354 with a given filename.
1356 d_pause (d_pause.U):
1357 This variable conditionally defines the HAS_PAUSE symbol, which
1358 indicates to the C program that the pause() routine is available
1359 to suspend a process until a signal is received.
1361 d_perl_otherlibdirs (otherlibdirs.U):
1362 This variable conditionally defines PERL_OTHERLIBDIRS, which
1363 contains a colon-separated set of paths for the perl binary to
1364 include in @INC. See also otherlibdirs.
1366 d_phostname (d_gethname.U):
1367 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1368 contains the shell command which, when fed to popen(), may be
1369 used to derive the host name.
1372 This variable conditionally defines the HAS_PIPE symbol, which
1373 indicates to the C program that the pipe() routine is available
1374 to create an inter-process channel.
1377 This variable conditionally defines the HAS_POLL symbol, which
1378 indicates to the C program that the poll() routine is available
1379 to poll active file descriptors.
1381 d_portable (d_portable.U):
1382 This variable conditionally defines the PORTABLE symbol, which
1383 indicates to the C program that it should not assume that it is
1384 running on the machine it was compiled on.
1386 d_PRId64 (quadfio.U):
1387 This variable conditionally defines the PERL_PRId64 symbol, which
1388 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1390 d_PRIeldbl (longdblfio.U):
1391 This variable conditionally defines the PERL_PRIfldbl symbol, which
1392 indiciates that stdio has a symbol to print long doubles.
1394 d_PRIEUldbl (longdblfio.U):
1395 This variable conditionally defines the PERL_PRIfldbl symbol, which
1396 indiciates that stdio has a symbol to print long doubles.
1397 The 'U' in the name is to separate this from d_PRIeldbl so that even
1398 case-blind systems can see the difference.
1400 d_PRIfldbl (longdblfio.U):
1401 This variable conditionally defines the PERL_PRIfldbl symbol, which
1402 indiciates that stdio has a symbol to print long doubles.
1404 d_PRIFUldbl (longdblfio.U):
1405 This variable conditionally defines the PERL_PRIfldbl symbol, which
1406 indiciates that stdio has a symbol to print long doubles.
1407 The 'U' in the name is to separate this from d_PRIfldbl so that even
1408 case-blind systems can see the difference.
1410 d_PRIgldbl (longdblfio.U):
1411 This variable conditionally defines the PERL_PRIfldbl symbol, which
1412 indiciates that stdio has a symbol to print long doubles.
1414 d_PRIGUldbl (longdblfio.U):
1415 This variable conditionally defines the PERL_PRIfldbl symbol, which
1416 indiciates that stdio has a symbol to print long doubles.
1417 The 'U' in the name is to separate this from d_PRIgldbl so that even
1418 case-blind systems can see the difference.
1420 d_PRIi64 (quadfio.U):
1421 This variable conditionally defines the PERL_PRIi64 symbol, which
1422 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1424 d_PRIo64 (quadfio.U):
1425 This variable conditionally defines the PERL_PRIo64 symbol, which
1426 indiciates that stdio has a symbol to print 64-bit octal numbers.
1428 d_PRIu64 (quadfio.U):
1429 This variable conditionally defines the PERL_PRIu64 symbol, which
1430 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1433 d_PRIx64 (quadfio.U):
1434 This variable conditionally defines the PERL_PRIx64 symbol, which
1435 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1437 d_PRIXU64 (quadfio.U):
1438 This variable conditionally defines the PERL_PRIXU64 symbol, which
1439 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1440 The 'U' in the name is to separate this from d_PRIx64 so that even
1441 case-blind systems can see the difference.
1443 d_procselfexe (d_procselfexe.U):
1444 Defined if $procselfexe is symlink to the absolute
1445 pathname of the executing program.
1447 d_pthread_atfork (d_pthread_atfork.U):
1448 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1449 which indicates to the C program that the pthread_atfork()
1450 routine is available.
1452 d_pthread_yield (d_pthread_y.U):
1453 This variable conditionally defines the HAS_PTHREAD_YIELD
1454 symbol if the pthread_yield routine is available to yield
1455 the execution of the current thread.
1458 This variable conditionally defines PWAGE, which indicates
1459 that struct passwd contains pw_age.
1461 d_pwchange (i_pwd.U):
1462 This variable conditionally defines PWCHANGE, which indicates
1463 that struct passwd contains pw_change.
1465 d_pwclass (i_pwd.U):
1466 This variable conditionally defines PWCLASS, which indicates
1467 that struct passwd contains pw_class.
1469 d_pwcomment (i_pwd.U):
1470 This variable conditionally defines PWCOMMENT, which indicates
1471 that struct passwd contains pw_comment.
1473 d_pwexpire (i_pwd.U):
1474 This variable conditionally defines PWEXPIRE, which indicates
1475 that struct passwd contains pw_expire.
1477 d_pwgecos (i_pwd.U):
1478 This variable conditionally defines PWGECOS, which indicates
1479 that struct passwd contains pw_gecos.
1481 d_pwpasswd (i_pwd.U):
1482 This variable conditionally defines PWPASSWD, which indicates
1483 that struct passwd contains pw_passwd.
1485 d_pwquota (i_pwd.U):
1486 This variable conditionally defines PWQUOTA, which indicates
1487 that struct passwd contains pw_quota.
1489 d_qgcvt (d_qgcvt.U):
1490 This variable conditionally defines the HAS_QGCVT symbol, which
1491 indicates to the C program that the qgcvt() routine is available.
1493 d_quad (quadtype.U):
1494 This variable, if defined, tells that there's a 64-bit integer type,
1497 d_random_r (d_random_r.U):
1498 This variable conditionally defines the HAS_RANDOM_R symbol,
1499 which indicates to the C program that the random_r()
1500 routine is available.
1502 d_readdir64_r (d_readdir64_r.U):
1503 This variable conditionally defines the HAS_READDIR64_R symbol,
1504 which indicates to the C program that the readdir64_r()
1505 routine is available.
1507 d_readdir (d_readdir.U):
1508 This variable conditionally defines HAS_READDIR if readdir() is
1509 available to read directory entries.
1511 d_readdir_r (d_readdir_r.U):
1512 This variable conditionally defines the HAS_READDIR_R symbol,
1513 which indicates to the C program that the readdir_r()
1514 routine is available.
1516 d_readlink (d_readlink.U):
1517 This variable conditionally defines the HAS_READLINK symbol, which
1518 indicates to the C program that the readlink() routine is available
1519 to read the value of a symbolic link.
1521 d_readv (d_readv.U):
1522 This variable conditionally defines the HAS_READV symbol, which
1523 indicates to the C program that the readv() routine is available.
1525 d_recvmsg (d_recvmsg.U):
1526 This variable conditionally defines the HAS_RECVMSG symbol, which
1527 indicates to the C program that the recvmsg() routine is available.
1529 d_rename (d_rename.U):
1530 This variable conditionally defines the HAS_RENAME symbol, which
1531 indicates to the C program that the rename() routine is available
1534 d_rewinddir (d_readdir.U):
1535 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1538 d_rmdir (d_rmdir.U):
1539 This variable conditionally defines HAS_RMDIR if rmdir() is
1540 available to remove directories.
1542 d_safebcpy (d_safebcpy.U):
1543 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1544 the bcopy() routine can do overlapping copies. Normally, you
1545 should probably use memmove().
1547 d_safemcpy (d_safemcpy.U):
1548 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1549 the memcpy() routine can do overlapping copies.
1550 For overlapping copies, memmove() should be used, if available.
1552 d_sanemcmp (d_sanemcmp.U):
1553 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1554 the memcpy() routine is available and can be used to compare relative
1555 magnitudes of chars with their high bits set.
1557 d_sbrkproto (d_sbrkproto.U):
1558 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1559 which indicates to the C program that the system provides
1560 a prototype for the sbrk() function. Otherwise, it is
1561 up to the program to supply one.
1563 d_sched_yield (d_pthread_y.U):
1564 This variable conditionally defines the HAS_SCHED_YIELD
1565 symbol if the sched_yield routine is available to yield
1566 the execution of the current thread.
1568 d_scm_rights (d_socket.U):
1569 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1570 which indicates that the SCM_RIGHTS is available. #ifdef is
1571 not enough because it may be an enum, glibc has been known to do this.
1573 d_SCNfldbl (longdblfio.U):
1574 This variable conditionally defines the PERL_PRIfldbl symbol, which
1575 indiciates that stdio has a symbol to scan long doubles.
1577 d_seekdir (d_readdir.U):
1578 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1581 d_select (d_select.U):
1582 This variable conditionally defines HAS_SELECT if select() is
1583 available to select active file descriptors. A <sys/time.h>
1584 inclusion may be necessary for the timeout field.
1587 This variable conditionally defines the HAS_SEM symbol, which
1588 indicates that the entire sem*(2) library is present.
1590 d_semctl (d_semctl.U):
1591 This variable conditionally defines the HAS_SEMCTL symbol, which
1592 indicates to the C program that the semctl() routine is available.
1594 d_semctl_semid_ds (d_union_semun.U):
1595 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1596 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1598 d_semctl_semun (d_union_semun.U):
1599 This variable conditionally defines USE_SEMCTL_SEMUN, which
1600 indicates that union semun is to be used for semctl IPC_STAT.
1602 d_semget (d_semget.U):
1603 This variable conditionally defines the HAS_SEMGET symbol, which
1604 indicates to the C program that the semget() routine is available.
1606 d_semop (d_semop.U):
1607 This variable conditionally defines the HAS_SEMOP symbol, which
1608 indicates to the C program that the semop() routine is available.
1610 d_sendmsg (d_sendmsg.U):
1611 This variable conditionally defines the HAS_SENDMSG symbol, which
1612 indicates to the C program that the sendmsg() routine is available.
1614 d_setegid (d_setegid.U):
1615 This variable conditionally defines the HAS_SETEGID symbol, which
1616 indicates to the C program that the setegid() routine is available
1617 to change the effective gid of the current program.
1619 d_seteuid (d_seteuid.U):
1620 This variable conditionally defines the HAS_SETEUID symbol, which
1621 indicates to the C program that the seteuid() routine is available
1622 to change the effective uid of the current program.
1624 d_setgrent (d_setgrent.U):
1625 This variable conditionally defines the HAS_SETGRENT symbol, which
1626 indicates to the C program that the setgrent() routine is available
1627 for initializing sequential access to the group database.
1629 d_setgrent_r (d_setgrent_r.U):
1630 This variable conditionally defines the HAS_SETGRENT_R symbol,
1631 which indicates to the C program that the setgrent_r()
1632 routine is available.
1634 d_setgrps (d_setgrps.U):
1635 This variable conditionally defines the HAS_SETGROUPS symbol, which
1636 indicates to the C program that the setgroups() routine is available
1637 to set the list of process groups.
1639 d_sethent (d_sethent.U):
1640 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1643 d_sethostent_r (d_sethostent_r.U):
1644 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1645 which indicates to the C program that the sethostent_r()
1646 routine is available.
1648 d_setitimer (d_setitimer.U):
1649 This variable conditionally defines the HAS_SETITIMER symbol, which
1650 indicates to the C program that the setitimer() routine is available.
1652 d_setlinebuf (d_setlnbuf.U):
1653 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1654 indicates to the C program that the setlinebuf() routine is available
1655 to change stderr or stdout from block-buffered or unbuffered to a
1658 d_setlocale (d_setlocale.U):
1659 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1660 available to handle locale-specific ctype implementations.
1662 d_setlocale_r (d_setlocale_r.U):
1663 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1664 which indicates to the C program that the setlocale_r()
1665 routine is available.
1667 d_setnent (d_setnent.U):
1668 This variable conditionally defines HAS_SETNETENT if setnetent() is
1671 d_setnetent_r (d_setnetent_r.U):
1672 This variable conditionally defines the HAS_SETNETENT_R symbol,
1673 which indicates to the C program that the setnetent_r()
1674 routine is available.
1676 d_setpent (d_setpent.U):
1677 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1680 d_setpgid (d_setpgid.U):
1681 This variable conditionally defines the HAS_SETPGID symbol if the
1682 setpgid(pid, gpid) function is available to set process group ID.
1684 d_setpgrp2 (d_setpgrp2.U):
1685 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1686 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1687 is available to set the current process group.
1689 d_setpgrp (d_setpgrp.U):
1690 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1691 available to set the current process group.
1693 d_setprior (d_setprior.U):
1694 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1695 is available to set a process's priority.
1697 d_setproctitle (d_setproctitle.U):
1698 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1699 which indicates to the C program that the setproctitle() routine
1702 d_setprotoent_r (d_setprotoent_r.U):
1703 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1704 which indicates to the C program that the setprotoent_r()
1705 routine is available.
1707 d_setpwent (d_setpwent.U):
1708 This variable conditionally defines the HAS_SETPWENT symbol, which
1709 indicates to the C program that the setpwent() routine is available
1710 for initializing sequential access to the passwd database.
1712 d_setpwent_r (d_setpwent_r.U):
1713 This variable conditionally defines the HAS_SETPWENT_R symbol,
1714 which indicates to the C program that the setpwent_r()
1715 routine is available.
1717 d_setregid (d_setregid.U):
1718 This variable conditionally defines HAS_SETREGID if setregid() is
1719 available to change the real and effective gid of the current
1722 d_setresgid (d_setregid.U):
1723 This variable conditionally defines HAS_SETRESGID if setresgid() is
1724 available to change the real, effective and saved gid of the current
1727 d_setresuid (d_setreuid.U):
1728 This variable conditionally defines HAS_SETREUID if setresuid() is
1729 available to change the real, effective and saved uid of the current
1732 d_setreuid (d_setreuid.U):
1733 This variable conditionally defines HAS_SETREUID if setreuid() is
1734 available to change the real and effective uid of the current
1737 d_setrgid (d_setrgid.U):
1738 This variable conditionally defines the HAS_SETRGID symbol, which
1739 indicates to the C program that the setrgid() routine is available
1740 to change the real gid of the current program.
1742 d_setruid (d_setruid.U):
1743 This variable conditionally defines the HAS_SETRUID symbol, which
1744 indicates to the C program that the setruid() routine is available
1745 to change the real uid of the current program.
1747 d_setsent (d_setsent.U):
1748 This variable conditionally defines HAS_SETSERVENT if setservent() is
1751 d_setservent_r (d_setservent_r.U):
1752 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1753 which indicates to the C program that the setservent_r()
1754 routine is available.
1756 d_setsid (d_setsid.U):
1757 This variable conditionally defines HAS_SETSID if setsid() is
1758 available to set the process group ID.
1760 d_setvbuf (d_setvbuf.U):
1761 This variable conditionally defines the HAS_SETVBUF symbol, which
1762 indicates to the C program that the setvbuf() routine is available
1763 to change buffering on an open stdio stream.
1766 This variable conditionally defines the USE_SFIO symbol,
1767 and indicates whether sfio is available (and should be used).
1770 This variable conditionally defines the HAS_SHM symbol, which
1771 indicates that the entire shm*(2) library is present.
1773 d_shmat (d_shmat.U):
1774 This variable conditionally defines the HAS_SHMAT symbol, which
1775 indicates to the C program that the shmat() routine is available.
1777 d_shmatprototype (d_shmat.U):
1778 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1779 symbol, which indicates that sys/shm.h has a prototype for
1782 d_shmctl (d_shmctl.U):
1783 This variable conditionally defines the HAS_SHMCTL symbol, which
1784 indicates to the C program that the shmctl() routine is available.
1786 d_shmdt (d_shmdt.U):
1787 This variable conditionally defines the HAS_SHMDT symbol, which
1788 indicates to the C program that the shmdt() routine is available.
1790 d_shmget (d_shmget.U):
1791 This variable conditionally defines the HAS_SHMGET symbol, which
1792 indicates to the C program that the shmget() routine is available.
1794 d_sigaction (d_sigaction.U):
1795 This variable conditionally defines the HAS_SIGACTION symbol, which
1796 indicates that the Vr4 sigaction() routine is available.
1798 d_sigprocmask (d_sigprocmask.U):
1799 This variable conditionally defines HAS_SIGPROCMASK
1800 if sigprocmask() is available to examine or change the signal mask
1801 of the calling process.
1803 d_sigsetjmp (d_sigsetjmp.U):
1804 This variable conditionally defines the HAS_SIGSETJMP symbol,
1805 which indicates that the sigsetjmp() routine is available to
1806 call setjmp() and optionally save the process's signal mask.
1808 d_sockatmark (d_sockatmark.U):
1809 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1810 indicates to the C program that the sockatmark() routine is available.
1812 d_sockatmarkproto (d_sockatmarkproto.U):
1813 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1814 which indicates to the C program that the system provides
1815 a prototype for the sockatmark() function. Otherwise, it is
1816 up to the program to supply one.
1818 d_socket (d_socket.U):
1819 This variable conditionally defines HAS_SOCKET, which indicates
1820 that the BSD socket interface is supported.
1822 d_socklen_t (d_socklen_t.U):
1823 This symbol will be defined if the C compiler supports socklen_t.
1825 d_sockpair (d_socket.U):
1826 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1827 indicates that the BSD socketpair() is supported.
1829 d_socks5_init (d_socks5_init.U):
1830 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1831 indicates to the C program that the socks5_init() routine is available.
1833 d_sqrtl (d_sqrtl.U):
1834 This variable conditionally defines the HAS_SQRTL symbol, which
1835 indicates to the C program that the sqrtl() routine is available.
1837 d_srand48_r (d_srand48_r.U):
1838 This variable conditionally defines the HAS_SRAND48_R symbol,
1839 which indicates to the C program that the srand48_r()
1840 routine is available.
1842 d_srandom_r (d_srandom_r.U):
1843 This variable conditionally defines the HAS_SRANDOM_R symbol,
1844 which indicates to the C program that the srandom_r()
1845 routine is available.
1847 d_sresgproto (d_sresgproto.U):
1848 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1849 which indicates to the C program that the system provides
1850 a prototype for the setresgid() function. Otherwise, it is
1851 up to the program to supply one.
1853 d_sresuproto (d_sresuproto.U):
1854 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1855 which indicates to the C program that the system provides
1856 a prototype for the setresuid() function. Otherwise, it is
1857 up to the program to supply one.
1859 d_statblks (d_statblks.U):
1860 This variable conditionally defines USE_STAT_BLOCKS
1861 if this system has a stat structure declaring
1862 st_blksize and st_blocks.
1864 d_statfs_f_flags (d_statfs_f_flags.U):
1865 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1866 symbol, which indicates to struct statfs from has f_flags member.
1867 This kind of struct statfs is coming from sys/mount.h (BSD),
1868 not from sys/statfs.h (SYSV).
1870 d_statfs_s (d_statfs_s.U):
1871 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1872 which indicates that the struct statfs is supported.
1874 d_statvfs (d_statvfs.U):
1875 This variable conditionally defines the HAS_STATVFS symbol, which
1876 indicates to the C program that the statvfs() routine is available.
1878 d_stdio_cnt_lval (d_stdstdio.U):
1879 This variable conditionally defines STDIO_CNT_LVALUE if the
1880 FILE_cnt macro can be used as an lvalue.
1882 d_stdio_ptr_lval (d_stdstdio.U):
1883 This variable conditionally defines STDIO_PTR_LVALUE if the
1884 FILE_ptr macro can be used as an lvalue.
1886 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
1887 This symbol is defined if using the FILE_ptr macro as an lvalue
1888 to increase the pointer by n leaves File_cnt(fp) unchanged.
1890 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1891 This symbol is defined if using the FILE_ptr macro as an lvalue
1892 to increase the pointer by n has the side effect of decreasing the
1893 value of File_cnt(fp) by n.
1895 d_stdio_stream_array (stdio_streams.U):
1896 This variable tells whether there is an array holding
1899 d_stdiobase (d_stdstdio.U):
1900 This variable conditionally defines USE_STDIO_BASE if this system
1901 has a FILE structure declaring a usable _base field (or equivalent)
1904 d_stdstdio (d_stdstdio.U):
1905 This variable conditionally defines USE_STDIO_PTR if this system
1906 has a FILE structure declaring usable _ptr and _cnt fields (or
1907 equivalent) in stdio.h.
1909 d_strchr (d_strchr.U):
1910 This variable conditionally defines HAS_STRCHR if strchr() and
1911 strrchr() are available for string searching.
1913 d_strcoll (d_strcoll.U):
1914 This variable conditionally defines HAS_STRCOLL if strcoll() is
1915 available to compare strings using collating information.
1917 d_strctcpy (d_strctcpy.U):
1918 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1919 indicates to the C program that this C compiler knows how to copy
1922 d_strerrm (d_strerror.U):
1923 This variable holds what Strerrr is defined as to translate an error
1924 code condition into an error message string. It could be 'strerror'
1925 or a more complex macro emulating strrror with sys_errlist[], or the
1926 "unknown" string when both strerror and sys_errlist are missing.
1928 d_strerror (d_strerror.U):
1929 This variable conditionally defines HAS_STRERROR if strerror() is
1930 available to translate error numbers to strings.
1932 d_strerror_r (d_strerror_r.U):
1933 This variable conditionally defines the HAS_STRERROR_R symbol,
1934 which indicates to the C program that the strerror_r()
1935 routine is available.
1937 d_strftime (d_strftime.U):
1938 This variable conditionally defines the HAS_STRFTIME symbol, which
1939 indicates to the C program that the strftime() routine is available.
1941 d_strtod (d_strtod.U):
1942 This variable conditionally defines the HAS_STRTOD symbol, which
1943 indicates to the C program that the strtod() routine is available
1944 to provide better numeric string conversion than atof().
1946 d_strtol (d_strtol.U):
1947 This variable conditionally defines the HAS_STRTOL symbol, which
1948 indicates to the C program that the strtol() routine is available
1949 to provide better numeric string conversion than atoi() and friends.
1951 d_strtold (d_strtold.U):
1952 This variable conditionally defines the HAS_STRTOLD symbol, which
1953 indicates to the C program that the strtold() routine is available.
1955 d_strtoll (d_strtoll.U):
1956 This variable conditionally defines the HAS_STRTOLL symbol, which
1957 indicates to the C program that the strtoll() routine is available.
1959 d_strtoq (d_strtoq.U):
1960 This variable conditionally defines the HAS_STRTOQ symbol, which
1961 indicates to the C program that the strtoq() routine is available.
1963 d_strtoul (d_strtoul.U):
1964 This variable conditionally defines the HAS_STRTOUL symbol, which
1965 indicates to the C program that the strtoul() routine is available
1966 to provide conversion of strings to unsigned long.
1968 d_strtoull (d_strtoull.U):
1969 This variable conditionally defines the HAS_STRTOULL symbol, which
1970 indicates to the C program that the strtoull() routine is available.
1972 d_strtouq (d_strtouq.U):
1973 This variable conditionally defines the HAS_STRTOUQ symbol, which
1974 indicates to the C program that the strtouq() routine is available.
1976 d_strxfrm (d_strxfrm.U):
1977 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1978 available to transform strings.
1980 d_suidsafe (d_dosuid.U):
1981 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1982 if setuid scripts can be secure. This test looks in /dev/fd/.
1984 d_symlink (d_symlink.U):
1985 This variable conditionally defines the HAS_SYMLINK symbol, which
1986 indicates to the C program that the symlink() routine is available
1987 to create symbolic links.
1989 d_syscall (d_syscall.U):
1990 This variable conditionally defines HAS_SYSCALL if syscall() is
1991 available call arbitrary system calls.
1993 d_syscallproto (d_syscallproto.U):
1994 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
1995 which indicates to the C program that the system provides
1996 a prototype for the syscall() function. Otherwise, it is
1997 up to the program to supply one.
1999 d_sysconf (d_sysconf.U):
2000 This variable conditionally defines the HAS_SYSCONF symbol, which
2001 indicates to the C program that the sysconf() routine is available
2002 to determine system related limits and options.
2004 d_sysernlst (d_strerror.U):
2005 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2006 is available to translate error numbers to the symbolic name.
2008 d_syserrlst (d_strerror.U):
2009 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2010 available to translate error numbers to strings.
2012 d_system (d_system.U):
2013 This variable conditionally defines HAS_SYSTEM if system() is
2014 available to issue a shell command.
2016 d_tcgetpgrp (d_tcgtpgrp.U):
2017 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2018 indicates to the C program that the tcgetpgrp() routine is available.
2019 to get foreground process group ID.
2021 d_tcsetpgrp (d_tcstpgrp.U):
2022 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2023 indicates to the C program that the tcsetpgrp() routine is available
2024 to set foreground process group ID.
2026 d_telldir (d_readdir.U):
2027 This variable conditionally defines HAS_TELLDIR if telldir() is
2030 d_telldirproto (d_telldirproto.U):
2031 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2032 which indicates to the C program that the system provides
2033 a prototype for the telldir() function. Otherwise, it is
2034 up to the program to supply one.
2037 This variable conditionally defines the HAS_TIME symbol, which indicates
2038 that the time() routine exists. The time() routine is normaly
2039 provided on UNIX systems.
2041 d_times (d_times.U):
2042 This variable conditionally defines the HAS_TIMES symbol, which indicates
2043 that the times() routine exists. The times() routine is normaly
2044 provided on UNIX systems. You may have to include <sys/times.h>.
2046 d_tm_tm_gmtoff (i_time.U):
2047 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2048 indicates to the C program that the struct tm has the tm_gmtoff field.
2050 d_tm_tm_zone (i_time.U):
2051 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2052 indicates to the C program that the struct tm has the tm_zone field.
2054 d_tmpnam_r (d_tmpnam_r.U):
2055 This variable conditionally defines the HAS_TMPNAM_R symbol,
2056 which indicates to the C program that the tmpnam_r()
2057 routine is available.
2059 d_truncate (d_truncate.U):
2060 This variable conditionally defines HAS_TRUNCATE if truncate() is
2061 available to truncate files.
2063 d_ttyname_r (d_ttyname_r.U):
2064 This variable conditionally defines the HAS_TTYNAME_R symbol,
2065 which indicates to the C program that the ttyname_r()
2066 routine is available.
2068 d_tzname (d_tzname.U):
2069 This variable conditionally defines HAS_TZNAME if tzname[] is
2070 available to access timezone names.
2072 d_u32align (d_u32align.U):
2073 This variable tells whether you must access character data
2074 through U32-aligned pointers.
2076 d_ualarm (d_ualarm.U):
2077 This variable conditionally defines the HAS_UALARM symbol, which
2078 indicates to the C program that the ualarm() routine is available.
2080 d_umask (d_umask.U):
2081 This variable conditionally defines the HAS_UMASK symbol, which
2082 indicates to the C program that the umask() routine is available.
2083 to set and get the value of the file creation mask.
2085 d_uname (d_gethname.U):
2086 This variable conditionally defines the HAS_UNAME symbol, which
2087 indicates to the C program that the uname() routine may be
2088 used to derive the host name.
2090 d_union_semun (d_union_semun.U):
2091 This variable conditionally defines HAS_UNION_SEMUN if the
2092 union semun is defined by including <sys/sem.h>.
2094 d_unordered (d_unordered.U):
2095 This variable conditionally defines the HAS_UNORDERED symbol, which
2096 indicates to the C program that the unordered() routine is available.
2098 d_usleep (d_usleep.U):
2099 This variable conditionally defines HAS_USLEEP if usleep() is
2100 available to do high granularity sleeps.
2102 d_usleepproto (d_usleepproto.U):
2103 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2104 which indicates to the C program that the system provides
2105 a prototype for the usleep() function. Otherwise, it is
2106 up to the program to supply one.
2108 d_ustat (d_ustat.U):
2109 This variable conditionally defines HAS_USTAT if ustat() is
2110 available to query file system statistics by dev_t.
2112 d_vendorarch (vendorarch.U):
2113 This variable conditionally defined PERL_VENDORARCH.
2115 d_vendorbin (vendorbin.U):
2116 This variable conditionally defines PERL_VENDORBIN.
2118 d_vendorlib (vendorlib.U):
2119 This variable conditionally defines PERL_VENDORLIB.
2121 d_vfork (d_vfork.U):
2122 This variable conditionally defines the HAS_VFORK symbol, which
2123 indicates the vfork() routine is available.
2125 d_void_closedir (d_closedir.U):
2126 This variable conditionally defines VOID_CLOSEDIR if closedir()
2127 does not return a value.
2129 d_voidsig (d_voidsig.U):
2130 This variable conditionally defines VOIDSIG if this system
2131 declares "void (*signal(...))()" in signal.h. The old way was to
2132 declare it as "int (*signal(...))()".
2134 d_voidtty (i_sysioctl.U):
2135 This variable conditionally defines USE_IOCNOTTY to indicate that the
2136 ioctl() call with TIOCNOTTY should be used to void tty association.
2137 Otherwise (on USG probably), it is enough to close the standard file
2138 decriptors and do a setpgrp().
2140 d_volatile (d_volatile.U):
2141 This variable conditionally defines the HASVOLATILE symbol, which
2142 indicates to the C program that this C compiler knows about the
2143 volatile declaration.
2145 d_vprintf (d_vprintf.U):
2146 This variable conditionally defines the HAS_VPRINTF symbol, which
2147 indicates to the C program that the vprintf() routine is available
2148 to printf with a pointer to an argument list.
2150 d_wait4 (d_wait4.U):
2151 This variable conditionally defines the HAS_WAIT4 symbol, which
2152 indicates the wait4() routine is available.
2154 d_waitpid (d_waitpid.U):
2155 This variable conditionally defines HAS_WAITPID if waitpid() is
2156 available to wait for child process.
2158 d_wcstombs (d_wcstombs.U):
2159 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2160 indicates to the C program that the wcstombs() routine is available
2161 to convert wide character strings to multibyte strings.
2163 d_wctomb (d_wctomb.U):
2164 This variable conditionally defines the HAS_WCTOMB symbol, which
2165 indicates to the C program that the wctomb() routine is available
2166 to convert a wide character to a multibyte.
2168 d_writev (d_writev.U):
2169 This variable conditionally defines the HAS_WRITEV symbol, which
2170 indicates to the C program that the writev() routine is available.
2173 This variable conditionally defines the symbol XENIX, which alerts
2174 the C program that it runs under Xenix.
2177 This variable is used internally by Configure to determine the
2178 full pathname (if any) of the date program. After Configure runs,
2179 the value is reset to a plain "date" and is not useful.
2181 db_hashtype (i_db.U):
2182 This variable contains the type of the hash structure element
2183 in the <db.h> header file. In older versions of DB, it was
2184 int, while in newer ones it is u_int32_t.
2186 db_prefixtype (i_db.U):
2187 This variable contains the type of the prefix structure element
2188 in the <db.h> header file. In older versions of DB, it was
2189 int, while in newer ones it is size_t.
2191 db_version_major (i_db.U):
2192 This variable contains the major version number of
2193 Berkeley DB found in the <db.h> header file.
2195 db_version_minor (i_db.U):
2196 This variable contains the minor version number of
2197 Berkeley DB found in the <db.h> header file.
2198 For DB version 1 this is always 0.
2200 db_version_patch (i_db.U):
2201 This variable contains the patch version number of
2202 Berkeley DB found in the <db.h> header file.
2203 For DB version 1 this is always 0.
2205 defvoidused (voidflags.U):
2206 This variable contains the default value of the VOIDUSED symbol (15).
2208 direntrytype (i_dirent.U):
2209 This symbol is set to 'struct direct' or 'struct dirent' depending on
2210 whether dirent is available or not. You should use this pseudo type to
2211 portably declare your directory entries.
2214 This variable contains the extension that is to be used for the
2215 dynamically loaded modules that perl generaties.
2218 This variable contains the name of the dynamic loading file that
2219 will be used with the package.
2221 doublesize (doublesize.U):
2222 This variable contains the value of the DOUBLESIZE symbol, which
2223 indicates to the C program how many bytes there are in a double.
2225 drand01 (randfunc.U):
2226 Indicates the macro to be used to generate normalized
2227 random numbers. Uses randfunc, often divided by
2228 (double) (((unsigned long) 1 << randbits)) in order to
2229 normalize the result.
2230 In C programs, the macro 'Drand01' is mapped to drand01.
2232 drand48_r_proto (d_drand48_r.U):
2233 This variable encodes the prototype of drand48_r.
2234 It is zero if d_drand48_r is undef, and one of the
2235 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2238 dynamic_ext (Extensions.U):
2239 This variable holds a list of XS extension files we want to
2240 link dynamically into the package. It is used by Makefile.
2242 eagain (nblock_io.U):
2243 This variable bears the symbolic errno code set by read() when no
2244 data is present on the file and non-blocking I/O was enabled (otherwise,
2245 read() blocks naturally).
2248 This variable conditionally defines EBCDIC if this
2249 system uses EBCDIC encoding. Among other things, this
2250 means that the character ranges are not contiguous.
2254 This variable is used internally by Configure to determine the
2255 full pathname (if any) of the echo program. After Configure runs,
2256 the value is reset to a plain "echo" and is not useful.
2259 This variable is used internally by Configure to determine the
2260 full pathname (if any) of the egrep program. After Configure runs,
2261 the value is reset to a plain "egrep" and is not useful.
2264 This variable is defined but not used by Configure.
2265 The value is a plain '' and is not useful.
2267 endgrent_r_proto (d_endgrent_r.U):
2268 This variable encodes the prototype of endgrent_r.
2269 It is zero if d_endgrent_r is undef, and one of the
2270 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2273 endhostent_r_proto (d_endhostent_r.U):
2274 This variable encodes the prototype of endhostent_r.
2275 It is zero if d_endhostent_r is undef, and one of the
2276 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2279 endnetent_r_proto (d_endnetent_r.U):
2280 This variable encodes the prototype of endnetent_r.
2281 It is zero if d_endnetent_r is undef, and one of the
2282 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2285 endprotoent_r_proto (d_endprotoent_r.U):
2286 This variable encodes the prototype of endprotoent_r.
2287 It is zero if d_endprotoent_r is undef, and one of the
2288 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2291 endpwent_r_proto (d_endpwent_r.U):
2292 This variable encodes the prototype of endpwent_r.
2293 It is zero if d_endpwent_r is undef, and one of the
2294 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2297 endservent_r_proto (d_endservent_r.U):
2298 This variable encodes the prototype of endservent_r.
2299 It is zero if d_endservent_r is undef, and one of the
2300 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2304 When running under Eunice this variable contains a command which will
2305 convert a shell script to the proper form of text file for it to be
2306 executable by the shell. On other systems it is a no-op.
2309 This is an old synonym for _exe.
2312 This variable is used internally by Configure to determine the
2313 full pathname (if any) of the expr program. After Configure runs,
2314 the value is reset to a plain "expr" and is not useful.
2316 extensions (Extensions.U):
2317 This variable holds a list of all extension files (both XS and
2318 non-xs linked into the package. It is propagated to Config.pm
2319 and is typically used to test whether a particular extesion
2323 This variable holds a list of extra modules to install.
2325 fflushall (fflushall.U):
2326 This symbol, if defined, tells that to flush
2327 all pending stdio output one must loop through all
2328 the stdio file handles stored in an array and fflush them.
2329 Note that if fflushNULL is defined, fflushall will not
2330 even be probed for and will be left undefined.
2332 fflushNULL (fflushall.U):
2333 This symbol, if defined, tells that fflush(NULL) does flush
2334 all pending stdio output.
2337 This variable is defined but not used by Configure.
2338 The value is a plain '' and is not useful.
2340 firstmakefile (Unix.U):
2341 This variable defines the first file searched by make. On unix,
2342 it is makefile (then Makefile). On case-insensitive systems,
2343 it might be something else. This is only used to deal with
2344 convoluted make depend tricks.
2347 This variable is defined but not used by Configure.
2348 The value is a plain '' and is not useful.
2350 fpossize (fpossize.U):
2351 This variable contains the size of a fpostype in bytes.
2353 fpostype (fpostype.U):
2354 This variable defines Fpos_t to be something like fpos_t, long,
2355 uint, or whatever type is used to declare file positions in libc.
2357 freetype (mallocsrc.U):
2358 This variable contains the return type of free(). It is usually
2359 void, but occasionally int.
2362 This variable contains the command used by Configure
2363 to copy files from the target host. Useful and available
2364 only during Perl build.
2365 The string ':' if not cross-compiling.
2368 This variable contains the full pathname to 'ar', whether or
2369 not the user has specified 'portability'. This is only used
2373 This variable contains the full pathname to 'csh', whether or
2374 not the user has specified 'portability'. This is only used
2375 in the compiled C program, and we assume that all systems which
2376 can share this executable will have the same full pathname to
2379 full_sed (Loc_sed.U):
2380 This variable contains the full pathname to 'sed', whether or
2381 not the user has specified 'portability'. This is only used
2382 in the compiled C program, and we assume that all systems which
2383 can share this executable will have the same full pathname to
2386 gccosandvers (gccvers.U):
2387 If GNU cc (gcc) is used, this variable the operating system and
2388 version used to compile the gcc. It is set to '' if not gcc,
2389 or if nothing useful can be parsed as the os version.
2391 gccversion (gccvers.U):
2392 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2393 indicate whether the compiler is version 1 or 2. This is used in
2394 setting some of the default cflags. It is set to '' if not gcc.
2396 getgrent_r_proto (d_getgrent_r.U):
2397 This variable encodes the prototype of getgrent_r.
2398 It is zero if d_getgrent_r is undef, and one of the
2399 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2402 getgrgid_r_proto (d_getgrgid_r.U):
2403 This variable encodes the prototype of getgrgid_r.
2404 It is zero if d_getgrgid_r is undef, and one of the
2405 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2408 getgrnam_r_proto (d_getgrnam_r.U):
2409 This variable encodes the prototype of getgrnam_r.
2410 It is zero if d_getgrnam_r is undef, and one of the
2411 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2414 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2415 This variable encodes the prototype of gethostbyaddr_r.
2416 It is zero if d_gethostbyaddr_r is undef, and one of the
2417 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2420 gethostbyname_r_proto (d_gethostbyname_r.U):
2421 This variable encodes the prototype of gethostbyname_r.
2422 It is zero if d_gethostbyname_r is undef, and one of the
2423 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2426 gethostent_r_proto (d_gethostent_r.U):
2427 This variable encodes the prototype of gethostent_r.
2428 It is zero if d_gethostent_r is undef, and one of the
2429 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2432 getlogin_r_proto (d_getlogin_r.U):
2433 This variable encodes the prototype of getlogin_r.
2434 It is zero if d_getlogin_r is undef, and one of the
2435 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2438 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2439 This variable encodes the prototype of getnetbyaddr_r.
2440 It is zero if d_getnetbyaddr_r is undef, and one of the
2441 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2444 getnetbyname_r_proto (d_getnetbyname_r.U):
2445 This variable encodes the prototype of getnetbyname_r.
2446 It is zero if d_getnetbyname_r is undef, and one of the
2447 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2450 getnetent_r_proto (d_getnetent_r.U):
2451 This variable encodes the prototype of getnetent_r.
2452 It is zero if d_getnetent_r is undef, and one of the
2453 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2456 getprotobyname_r_proto (d_getprotobyname_r.U):
2457 This variable encodes the prototype of getprotobyname_r.
2458 It is zero if d_getprotobyname_r is undef, and one of the
2459 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2462 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2463 This variable encodes the prototype of getprotobynumber_r.
2464 It is zero if d_getprotobynumber_r is undef, and one of the
2465 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2468 getprotoent_r_proto (d_getprotoent_r.U):
2469 This variable encodes the prototype of getprotoent_r.
2470 It is zero if d_getprotoent_r is undef, and one of the
2471 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2474 getpwent_r_proto (d_getpwent_r.U):
2475 This variable encodes the prototype of getpwent_r.
2476 It is zero if d_getpwent_r is undef, and one of the
2477 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2480 getpwnam_r_proto (d_getpwnam_r.U):
2481 This variable encodes the prototype of getpwnam_r.
2482 It is zero if d_getpwnam_r is undef, and one of the
2483 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2486 getpwuid_r_proto (d_getpwuid_r.U):
2487 This variable encodes the prototype of getpwuid_r.
2488 It is zero if d_getpwuid_r is undef, and one of the
2489 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2492 getservbyname_r_proto (d_getservbyname_r.U):
2493 This variable encodes the prototype of getservbyname_r.
2494 It is zero if d_getservbyname_r is undef, and one of the
2495 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2498 getservbyport_r_proto (d_getservbyport_r.U):
2499 This variable encodes the prototype of getservbyport_r.
2500 It is zero if d_getservbyport_r is undef, and one of the
2501 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2504 getservent_r_proto (d_getservent_r.U):
2505 This variable encodes the prototype of getservent_r.
2506 It is zero if d_getservent_r is undef, and one of the
2507 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2510 getspnam_r_proto (d_getspnam_r.U):
2511 This variable encodes the prototype of getspnam_r.
2512 It is zero if d_getspnam_r is undef, and one of the
2513 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2517 This variable contains the format string used for printing a Gid_t.
2519 gidsign (gidsign.U):
2520 This variable contains the signedness of a gidtype.
2521 1 for unsigned, -1 for signed.
2523 gidsize (gidsize.U):
2524 This variable contains the size of a gidtype in bytes.
2526 gidtype (gidtype.U):
2527 This variable defines Gid_t to be something like gid_t, int,
2528 ushort, or whatever type is used to declare the return type
2529 of getgid(). Typically, it is the type of group ids in the kernel.
2532 This variable holds the general path (space-separated) used to
2533 find libraries. It may contain directories that do not exist on
2534 this platform, libpth is the cleaned-up version.
2537 This variable is used internally by Configure to determine the
2538 full pathname (if any) of the gmake program. After Configure runs,
2539 the value is reset to a plain "gmake" and is not useful.
2541 gmtime_r_proto (d_gmtime_r.U):
2542 This variable encodes the prototype of gmtime_r.
2543 It is zero if d_gmtime_r is undef, and one of the
2544 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2547 gnulibc_version (d_gnulibc.U):
2548 This variable contains the version number of the GNU C library.
2549 It is usually something like '2.2.5'. It is a plain '' if this
2550 is not the GNU C library, or if the version is unknown.
2553 This variable is used internally by Configure to determine the
2554 full pathname (if any) of the grep program. After Configure runs,
2555 the value is reset to a plain "grep" and is not useful.
2558 This variable contains a command that produces the text of the
2559 /etc/group file. This is normally "cat /etc/group", but can be
2560 "ypcat group" when NIS is used.
2561 On some systems, such as os390, there may be no equivalent
2562 command, in which case this variable is unset.
2564 groupstype (groupstype.U):
2565 This variable defines Groups_t to be something like gid_t, int,
2566 ushort, or whatever type is used for the second argument to
2567 getgroups() and setgroups(). Usually, this is the same as
2568 gidtype (gid_t), but sometimes it isn't.
2571 This variable is used internally by Configure to determine the
2572 full pathname (if any) of the gzip program. After Configure runs,
2573 the value is reset to a plain "gzip" and is not useful.
2575 h_fcntl (h_fcntl.U):
2576 This is variable gets set in various places to tell i_fcntl that
2577 <fcntl.h> should be included.
2579 h_sysfile (h_sysfile.U):
2580 This is variable gets set in various places to tell i_sys_file that
2581 <sys/file.h> should be included.
2584 Gives the type of hints used for previous answers. May be one of
2585 "default", "recommended" or "previous".
2588 This variable contains a command that produces the text of the
2589 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2590 "ypcat hosts" when NIS is used.
2591 On some systems, such as os390, there may be no equivalent
2592 command, in which case this variable is unset.
2595 This variable is the size of an I16 in bytes.
2598 This variable contains the C type used for Perl's I16.
2601 This variable is the size of an I32 in bytes.
2604 This variable contains the C type used for Perl's I32.
2607 This variable is the size of an I64 in bytes.
2610 This variable contains the C type used for Perl's I64.
2613 This variable is the size of an I8 in bytes.
2616 This variable contains the C type used for Perl's I8.
2618 i_arpainet (i_arpainet.U):
2619 This variable conditionally defines the I_ARPA_INET symbol,
2620 and indicates whether a C program should include <arpa/inet.h>.
2622 i_bsdioctl (i_sysioctl.U):
2623 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2624 indicates to the C program that <sys/bsdioctl.h> exists and should
2627 i_crypt (i_crypt.U):
2628 This variable conditionally defines the I_CRYPT symbol, and indicates
2629 whether a C program should include <crypt.h>.
2632 This variable conditionally defines the I_DB symbol, and indicates
2633 whether a C program may include Berkeley's DB include file <db.h>.
2636 This variable conditionally defines the I_DBM symbol, which
2637 indicates to the C program that <dbm.h> exists and should
2640 i_dirent (i_dirent.U):
2641 This variable conditionally defines I_DIRENT, which indicates
2642 to the C program that it should include <dirent.h>.
2645 This variable conditionally defines the I_DLD symbol, which
2646 indicates to the C program that <dld.h> (GNU dynamic loading)
2647 exists and should be included.
2649 i_dlfcn (i_dlfcn.U):
2650 This variable conditionally defines the I_DLFCN symbol, which
2651 indicates to the C program that <dlfcn.h> exists and should
2654 i_fcntl (i_fcntl.U):
2655 This variable controls the value of I_FCNTL (which tells
2656 the C program to include <fcntl.h>).
2658 i_float (i_float.U):
2659 This variable conditionally defines the I_FLOAT symbol, and indicates
2660 whether a C program may include <float.h> to get symbols like DBL_MAX
2661 or DBL_MIN, i.e. machine dependent floating point values.
2664 This variable conditionally defines the I_FP symbol, and indicates
2665 whether a C program should include <fp.h>.
2667 i_fp_class (i_fp_class.U):
2668 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2669 whether a C program should include <fp_class.h>.
2672 This variable conditionally defines the I_GDBM symbol, which
2673 indicates to the C program that <gdbm.h> exists and should
2677 This variable conditionally defines the I_GRP symbol, and indicates
2678 whether a C program should include <grp.h>.
2680 i_ieeefp (i_ieeefp.U):
2681 This variable conditionally defines the I_IEEEFP symbol, and indicates
2682 whether a C program should include <ieeefp.h>.
2684 i_inttypes (i_inttypes.U):
2685 This variable conditionally defines the I_INTTYPES symbol,
2686 and indicates whether a C program should include <inttypes.h>.
2688 i_langinfo (i_langinfo.U):
2689 This variable conditionally defines the I_LANGINFO symbol,
2690 and indicates whether a C program should include <langinfo.h>.
2692 i_libutil (i_libutil.U):
2693 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2694 whether a C program should include <libutil.h>.
2696 i_limits (i_limits.U):
2697 This variable conditionally defines the I_LIMITS symbol, and indicates
2698 whether a C program may include <limits.h> to get symbols like WORD_BIT
2701 i_locale (i_locale.U):
2702 This variable conditionally defines the I_LOCALE symbol,
2703 and indicates whether a C program should include <locale.h>.
2705 i_machcthr (i_machcthr.U):
2706 This variable conditionally defines the I_MACH_CTHREADS symbol,
2707 and indicates whether a C program should include <mach/cthreads.h>.
2709 i_malloc (i_malloc.U):
2710 This variable conditionally defines the I_MALLOC symbol, and indicates
2711 whether a C program should include <malloc.h>.
2714 This variable conditionally defines the I_MATH symbol, and indicates
2715 whether a C program may include <math.h>.
2717 i_memory (i_memory.U):
2718 This variable conditionally defines the I_MEMORY symbol, and indicates
2719 whether a C program should include <memory.h>.
2721 i_mntent (i_mntent.U):
2722 This variable conditionally defines the I_MNTENT symbol, and indicates
2723 whether a C program should include <mntent.h>.
2726 This variable conditionally defines the I_NDBM symbol, which
2727 indicates to the C program that <ndbm.h> exists and should
2730 i_netdb (i_netdb.U):
2731 This variable conditionally defines the I_NETDB symbol, and indicates
2732 whether a C program should include <netdb.h>.
2734 i_neterrno (i_neterrno.U):
2735 This variable conditionally defines the I_NET_ERRNO symbol, which
2736 indicates to the C program that <net/errno.h> exists and should
2739 i_netinettcp (i_netinettcp.U):
2740 This variable conditionally defines the I_NETINET_TCP symbol,
2741 and indicates whether a C program should include <netinet/tcp.h>.
2744 This variable conditionally defines I_NETINET_IN, which indicates
2745 to the C program that it should include <netinet/in.h>. Otherwise,
2746 you may try <sys/in.h>.
2749 This variable conditionally defines the I_POLL symbol, and indicates
2750 whether a C program should include <poll.h>.
2753 This variable conditionally defines the I_PROT symbol, and indicates
2754 whether a C program should include <prot.h>.
2756 i_pthread (i_pthread.U):
2757 This variable conditionally defines the I_PTHREAD symbol,
2758 and indicates whether a C program should include <pthread.h>.
2761 This variable conditionally defines I_PWD, which indicates
2762 to the C program that it should include <pwd.h>.
2764 i_rpcsvcdbm (i_dbm.U):
2765 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2766 indicates to the C program that <rpcsvc/dbm.h> exists and should
2767 be included. Some System V systems might need this instead of <dbm.h>.
2770 This variable conditionally defines the I_SFIO symbol,
2771 and indicates whether a C program should include <sfio.h>.
2773 i_sgtty (i_termio.U):
2774 This variable conditionally defines the I_SGTTY symbol, which
2775 indicates to the C program that it should include <sgtty.h> rather
2778 i_shadow (i_shadow.U):
2779 This variable conditionally defines the I_SHADOW symbol, and indicates
2780 whether a C program should include <shadow.h>.
2782 i_socks (i_socks.U):
2783 This variable conditionally defines the I_SOCKS symbol, and indicates
2784 whether a C program should include <socks.h>.
2786 i_stdarg (i_varhdr.U):
2787 This variable conditionally defines the I_STDARG symbol, which
2788 indicates to the C program that <stdarg.h> exists and should
2791 i_stddef (i_stddef.U):
2792 This variable conditionally defines the I_STDDEF symbol, which
2793 indicates to the C program that <stddef.h> exists and should
2796 i_stdlib (i_stdlib.U):
2797 This variable conditionally defines the I_STDLIB symbol, which
2798 indicates to the C program that <stdlib.h> exists and should
2801 i_string (i_string.U):
2802 This variable conditionally defines the I_STRING symbol, which
2803 indicates that <string.h> should be included rather than <strings.h>.
2805 i_sunmath (i_sunmath.U):
2806 This variable conditionally defines the I_SUNMATH symbol, and indicates
2807 whether a C program should include <sunmath.h>.
2809 i_sysaccess (i_sysaccess.U):
2810 This variable conditionally defines the I_SYS_ACCESS symbol,
2811 and indicates whether a C program should include <sys/access.h>.
2813 i_sysdir (i_sysdir.U):
2814 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2815 whether a C program should include <sys/dir.h>.
2817 i_sysfile (i_sysfile.U):
2818 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2819 whether a C program should include <sys/file.h> to get R_OK and friends.
2821 i_sysfilio (i_sysioctl.U):
2822 This variable conditionally defines the I_SYS_FILIO symbol, which
2823 indicates to the C program that <sys/filio.h> exists and should
2824 be included in preference to <sys/ioctl.h>.
2827 This variable conditionally defines I_SYS_IN, which indicates
2828 to the C program that it should include <sys/in.h> instead of
2831 i_sysioctl (i_sysioctl.U):
2832 This variable conditionally defines the I_SYS_IOCTL symbol, which
2833 indicates to the C program that <sys/ioctl.h> exists and should
2836 i_syslog (i_syslog.U):
2837 This variable conditionally defines the I_SYSLOG symbol,
2838 and indicates whether a C program should include <syslog.h>.
2840 i_sysmman (i_sysmman.U):
2841 This variable conditionally defines the I_SYS_MMAN symbol, and
2842 indicates whether a C program should include <sys/mman.h>.
2844 i_sysmode (i_sysmode.U):
2845 This variable conditionally defines the I_SYSMODE symbol,
2846 and indicates whether a C program should include <sys/mode.h>.
2848 i_sysmount (i_sysmount.U):
2849 This variable conditionally defines the I_SYSMOUNT symbol,
2850 and indicates whether a C program should include <sys/mount.h>.
2852 i_sysndir (i_sysndir.U):
2853 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2854 whether a C program should include <sys/ndir.h>.
2856 i_sysparam (i_sysparam.U):
2857 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2858 whether a C program should include <sys/param.h>.
2860 i_sysresrc (i_sysresrc.U):
2861 This variable conditionally defines the I_SYS_RESOURCE symbol,
2862 and indicates whether a C program should include <sys/resource.h>.
2864 i_syssecrt (i_syssecrt.U):
2865 This variable conditionally defines the I_SYS_SECURITY symbol,
2866 and indicates whether a C program should include <sys/security.h>.
2868 i_sysselct (i_sysselct.U):
2869 This variable conditionally defines I_SYS_SELECT, which indicates
2870 to the C program that it should include <sys/select.h> in order to
2871 get the definition of struct timeval.
2873 i_syssockio (i_sysioctl.U):
2874 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2875 C program that socket ioctl codes may be found in <sys/sockio.h>
2876 instead of <sys/ioctl.h>.
2878 i_sysstat (i_sysstat.U):
2879 This variable conditionally defines the I_SYS_STAT symbol,
2880 and indicates whether a C program should include <sys/stat.h>.
2882 i_sysstatfs (i_sysstatfs.U):
2883 This variable conditionally defines the I_SYSSTATFS symbol,
2884 and indicates whether a C program should include <sys/statfs.h>.
2886 i_sysstatvfs (i_sysstatvfs.U):
2887 This variable conditionally defines the I_SYSSTATVFS symbol,
2888 and indicates whether a C program should include <sys/statvfs.h>.
2890 i_systime (i_time.U):
2891 This variable conditionally defines I_SYS_TIME, which indicates
2892 to the C program that it should include <sys/time.h>.
2894 i_systimek (i_time.U):
2895 This variable conditionally defines I_SYS_TIME_KERNEL, which
2896 indicates to the C program that it should include <sys/time.h>
2897 with KERNEL defined.
2899 i_systimes (i_systimes.U):
2900 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2901 whether a C program should include <sys/times.h>.
2903 i_systypes (i_systypes.U):
2904 This variable conditionally defines the I_SYS_TYPES symbol,
2905 and indicates whether a C program should include <sys/types.h>.
2907 i_sysuio (i_sysuio.U):
2908 This variable conditionally defines the I_SYSUIO symbol, and indicates
2909 whether a C program should include <sys/uio.h>.
2911 i_sysun (i_sysun.U):
2912 This variable conditionally defines I_SYS_UN, which indicates
2913 to the C program that it should include <sys/un.h> to get UNIX
2914 domain socket definitions.
2916 i_sysutsname (i_sysutsname.U):
2917 This variable conditionally defines the I_SYSUTSNAME symbol,
2918 and indicates whether a C program should include <sys/utsname.h>.
2920 i_sysvfs (i_sysvfs.U):
2921 This variable conditionally defines the I_SYSVFS symbol,
2922 and indicates whether a C program should include <sys/vfs.h>.
2924 i_syswait (i_syswait.U):
2925 This variable conditionally defines I_SYS_WAIT, which indicates
2926 to the C program that it should include <sys/wait.h>.
2928 i_termio (i_termio.U):
2929 This variable conditionally defines the I_TERMIO symbol, which
2930 indicates to the C program that it should include <termio.h> rather
2933 i_termios (i_termio.U):
2934 This variable conditionally defines the I_TERMIOS symbol, which
2935 indicates to the C program that the POSIX <termios.h> file is
2939 This variable conditionally defines I_TIME, which indicates
2940 to the C program that it should include <time.h>.
2942 i_unistd (i_unistd.U):
2943 This variable conditionally defines the I_UNISTD symbol, and indicates
2944 whether a C program should include <unistd.h>.
2946 i_ustat (i_ustat.U):
2947 This variable conditionally defines the I_USTAT symbol, and indicates
2948 whether a C program should include <ustat.h>.
2950 i_utime (i_utime.U):
2951 This variable conditionally defines the I_UTIME symbol, and indicates
2952 whether a C program should include <utime.h>.
2954 i_values (i_values.U):
2955 This variable conditionally defines the I_VALUES symbol, and indicates
2956 whether a C program may include <values.h> to get symbols like MAXLONG
2959 i_varargs (i_varhdr.U):
2960 This variable conditionally defines I_VARARGS, which indicates
2961 to the C program that it should include <varargs.h>.
2963 i_varhdr (i_varhdr.U):
2964 Contains the name of the header to be included to get va_dcl definition.
2965 Typically one of varargs.h or stdarg.h.
2967 i_vfork (i_vfork.U):
2968 This variable conditionally defines the I_VFORK symbol, and indicates
2969 whether a C program should include vfork.h.
2971 ignore_versioned_solibs (libs.U):
2972 This variable should be non-empty if non-versioned shared
2973 libraries (libfoo.so.x.y) are to be ignored (because they
2974 cannot be linked against).
2976 inc_version_list (inc_version_list.U):
2977 This variable specifies the list of subdirectories in over
2978 which perl.c:incpush() and lib/lib.pm will automatically
2979 search when adding directories to @INC. The elements in
2980 the list are separated by spaces. This is only useful
2981 if you have a perl library directory tree structured like the
2982 default one. See INSTALL for how this works. The versioned
2983 site_perl directory was introduced in 5.005, so that is the
2984 lowest possible value.
2986 inc_version_list_init (inc_version_list.U):
2987 This variable holds the same list as inc_version_list, but
2988 each item is enclosed in double quotes and separated by commas,
2989 suitable for use in the PERL_INC_VERSION_LIST initialization.
2992 This variable must preceed the normal include path to get hte
2993 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2994 Value can be "" or "/bsd43" on mips.
2997 This variable is defined but not used by Configure.
2998 The value is a plain '' and is not useful.
3000 installarchlib (archlib.U):
3001 This variable is really the same as archlibexp but may differ on
3002 those systems using AFS. For extra portability, only this variable
3003 should be used in makefiles.
3006 This variable is the same as binexp unless AFS is running in which case
3007 the user is explicitely prompted for it. This variable should always
3008 be used in your makefiles for maximum portability.
3010 installman1dir (man1dir.U):
3011 This variable is really the same as man1direxp, unless you are using
3012 AFS in which case it points to the read/write location whereas
3013 man1direxp only points to the read-only access location. For extra
3014 portability, you should only use this variable within your makefiles.
3016 installman3dir (man3dir.U):
3017 This variable is really the same as man3direxp, unless you are using
3018 AFS in which case it points to the read/write location whereas
3019 man3direxp only points to the read-only access location. For extra
3020 portability, you should only use this variable within your makefiles.
3022 installprefix (installprefix.U):
3023 This variable holds the name of the directory below which
3024 "make install" will install the package. For most users, this
3025 is the same as prefix. However, it is useful for
3026 installing the software into a different (usually temporary)
3027 location after which it can be bundled up and moved somehow
3028 to the final location specified by prefix.
3030 installprefixexp (installprefix.U):
3031 This variable holds the full absolute path of installprefix
3032 with all ~-expansion done.
3034 installprivlib (privlib.U):
3035 This variable is really the same as privlibexp but may differ on
3036 those systems using AFS. For extra portability, only this variable
3037 should be used in makefiles.
3039 installscript (scriptdir.U):
3040 This variable is usually the same as scriptdirexp, unless you are on
3041 a system running AFS, in which case they may differ slightly. You
3042 should always use this variable within your makefiles for portability.
3044 installsitearch (sitearch.U):
3045 This variable is really the same as sitearchexp but may differ on
3046 those systems using AFS. For extra portability, only this variable
3047 should be used in makefiles.
3049 installsitebin (sitebin.U):
3050 This variable is usually the same as sitebinexp, unless you are on
3051 a system running AFS, in which case they may differ slightly. You
3052 should always use this variable within your makefiles for portability.
3054 installsitelib (sitelib.U):
3055 This variable is really the same as sitelibexp but may differ on
3056 those systems using AFS. For extra portability, only this variable
3057 should be used in makefiles.
3059 installstyle (installstyle.U):
3060 This variable describes the "style" of the perl installation.
3061 This is intended to be useful for tools that need to
3062 manipulate entire perl distributions. Perl itself doesn't use
3063 this to find its libraries -- the library directories are
3064 stored directly in Config.pm. Currently, there are only two
3065 styles: "lib" and "lib/perl5". The default library locations
3066 (e.g. privlib, sitelib) are either $prefix/lib or
3067 $prefix/lib/perl5. The former is useful if $prefix is a
3068 directory dedicated to perl (e.g. /opt/perl), while the latter
3069 is useful if $prefix is shared by many packages, e.g. if
3072 This may later be extended to include other information, so
3073 be careful with pattern-matching on the results.
3075 For compatibility with perl5.005 and earlier, the default
3076 setting is based on whether or not $prefix contains the string
3079 installusrbinperl (instubperl.U):
3080 This variable tells whether Perl should be installed also as
3081 /usr/bin/perl in addition to
3084 installvendorarch (vendorarch.U):
3085 This variable is really the same as vendorarchexp but may differ on
3086 those systems using AFS. For extra portability, only this variable
3087 should be used in makefiles.
3089 installvendorbin (vendorbin.U):
3090 This variable is really the same as vendorbinexp but may differ on
3091 those systems using AFS. For extra portability, only this variable
3092 should be used in makefiles.
3094 installvendorlib (vendorlib.U):
3095 This variable is really the same as vendorlibexp but may differ on
3096 those systems using AFS. For extra portability, only this variable
3097 should be used in makefiles.
3099 intsize (intsize.U):
3100 This variable contains the value of the INTSIZE symbol, which
3101 indicates to the C program how many bytes there are in an int.
3103 issymlink (issymlink.U):
3104 This variable holds the test command to test for a symbolic link
3105 (if they are supported). Typical values include 'test -h' and
3108 ivdformat (perlxvf.U):
3109 This variable contains the format string used for printing
3110 a Perl IV as a signed decimal integer.
3113 This variable is the size of an IV in bytes.
3116 This variable contains the C type used for Perl's IV.
3118 known_extensions (Extensions.U):
3119 This variable holds a list of all XS extensions included in
3123 This variable is defined but not used by Configure.
3124 The value is a plain '' and is not useful.
3127 This variable indicates the program to be used to link
3128 libraries for dynamic loading. On some systems, it is 'ld'.
3129 On ELF systems, it should be $cc. Mostly, we'll try to respect
3130 the hint file setting.
3132 lddlflags (dlsrc.U):
3133 This variable contains any special flags that might need to be
3134 passed to $ld to create a shared library suitable for dynamic
3135 loading. It is up to the makefile to use it. For hpux, it
3136 should be '-b'. For sunos 4.1, it is empty.
3138 ldflags (ccflags.U):
3139 This variable contains any additional C loader flags desired by
3140 the user. It is up to the Makefile to use this.
3142 ldflags_uselargefiles (uselfs.U):
3143 This variable contains the loader flags needed by large file builds
3144 and added to ldflags by hints files.
3146 ldlibpthname (libperl.U):
3147 This variable holds the name of the shared library
3148 search path, often LD_LIBRARY_PATH. To get an empty
3149 string, the hints file must set this to 'none'.
3152 This variable is used internally by Configure to determine the
3153 full pathname (if any) of the less program. After Configure runs,
3154 the value is reset to a plain "less" and is not useful.
3157 This is an old synonym for _a.
3160 This variable contains the location of the C library.
3162 libperl (libperl.U):
3163 The perl executable is obtained by linking perlmain.c with
3164 libperl, any static extensions (usually just DynaLoader),
3165 and any other libraries needed on this system. libperl
3166 is usually libperl.a, but can also be libperl.so.xxx if
3167 the user wishes to build a perl executable with a shared
3171 This variable holds the general path (space-separated) used to find
3172 libraries. It is intended to be used by other units.
3175 This variable holds the additional libraries we want to use.
3176 It is up to the Makefile to deal with it. The list can be empty.
3179 This variable holds the directory names aka dirnames of the libraries
3180 we found and accepted, duplicates are removed.
3183 This variable holds the filenames aka basenames of the libraries
3184 we found and accepted.
3187 This variable holds the full pathnames of the libraries
3188 we found and accepted.
3191 This variable holds the directory names probed for libraries.
3193 libswanted (Myinit.U):
3194 This variable holds a list of all the libraries we want to
3195 search. The order is chosen to pick up the c library
3196 ahead of ucb or bsd libraries for SVR4.
3198 libswanted_uselargefiles (uselfs.U):
3199 This variable contains the libraries needed by large file builds
3200 and added to ldflags by hints files. It is a space separated list
3201 of the library names without the "lib" prefix or any suffix, just
3205 This variable is defined but not used by Configure.
3206 The value is a plain '' and is not useful.
3209 This variable is defined but not used by Configure.
3210 The value is a plain '' and is not useful.
3212 lkflags (ccflags.U):
3213 This variable contains any additional C partial linker flags desired by
3214 the user. It is up to the Makefile to use this.
3217 This variable is used internally by Configure to determine the
3218 full pathname (if any) of the ln program. After Configure runs,
3219 the value is reset to a plain "ln" and is not useful.
3222 This variable holds the name of the command to make
3223 symbolic links (if they are supported). It can be used
3224 in the Makefile. It is either 'ln -s' or 'ln'
3226 localtime_r_proto (d_localtime_r.U):
3227 This variable encodes the prototype of localtime_r.
3228 It is zero if d_localtime_r is undef, and one of the
3229 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3232 locincpth (ccflags.U):
3233 This variable contains a list of additional directories to be
3234 searched by the compiler. The appropriate '-I' directives will
3235 be added to ccflags. This is intended to simplify setting
3236 local directories from the Configure command line.
3237 It's not much, but it parallels the loclibpth stuff in libpth.U.
3239 loclibpth (libpth.U):
3240 This variable holds the paths (space-separated) used to find local
3241 libraries. It is prepended to libpth, and is intended to be easily
3242 set from the command line.
3244 longdblsize (d_longdbl.U):
3245 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3246 indicates to the C program how many bytes there are in a long double,
3247 if this system supports long doubles.
3249 longlongsize (d_longlong.U):
3250 This variable contains the value of the LONGLONGSIZE symbol, which
3251 indicates to the C program how many bytes there are in a long long,
3252 if this system supports long long.
3254 longsize (intsize.U):
3255 This variable contains the value of the LONGSIZE symbol, which
3256 indicates to the C program how many bytes there are in a long.
3259 This variable is defined but not used by Configure.
3260 The value is a plain '' and is not useful.
3263 This variable is defined but not used by Configure.
3264 The value is a plain '' and is not useful.
3267 This variable is used internally by Configure to determine the
3268 full pathname (if any) of the ls program. After Configure runs,
3269 the value is reset to a plain "ls" and is not useful.
3271 lseeksize (lseektype.U):
3272 This variable defines lseektype to be something like off_t, long,
3273 or whatever type is used to declare lseek offset's type in the
3274 kernel (which also appears to be lseek's return type).
3276 lseektype (lseektype.U):
3277 This variable defines lseektype to be something like off_t, long,
3278 or whatever type is used to declare lseek offset's type in the
3279 kernel (which also appears to be lseek's return type).
3282 This variable is defined but not used by Configure.
3283 The value is a plain '' and is not useful.
3286 This variable is defined but not used by Configure.
3287 The value is a plain '' and is not useful.
3290 This variable is used internally by Configure to determine the
3291 full pathname (if any) of the make program. After Configure runs,
3292 the value is reset to a plain "make" and is not useful.
3294 make_set_make (make.U):
3295 Some versions of 'make' set the variable MAKE. Others do not.
3296 This variable contains the string to be included in Makefile.SH
3297 so that MAKE is set if needed, and not if not needed.
3298 Possible values are:
3299 make_set_make='#' # If your make program handles this for you,
3300 make_set_make="MAKE=$make" # if it doesn't.
3301 I used a comment character so that we can distinguish a
3302 'set' value (from a previous config.sh or Configure '-D' option)
3303 from an uncomputed value.
3305 mallocobj (mallocsrc.U):
3306 This variable contains the name of the malloc.o that this package
3307 generates, if that malloc.o is preferred over the system malloc.
3308 Otherwise the value is null. This variable is intended for generating
3309 Makefiles. See mallocsrc.
3311 mallocsrc (mallocsrc.U):
3312 This variable contains the name of the malloc.c that comes with
3313 the package, if that malloc.c is preferred over the system malloc.
3314 Otherwise the value is null. This variable is intended for generating
3317 malloctype (mallocsrc.U):
3318 This variable contains the kind of ptr returned by malloc and realloc.
3320 man1dir (man1dir.U):
3321 This variable contains the name of the directory in which manual
3322 source pages are to be put. It is the responsibility of the
3323 Makefile.SH to get the value of this into the proper command.
3324 You must be prepared to do the ~name expansion yourself.
3326 man1direxp (man1dir.U):
3327 This variable is the same as the man1dir variable, but is filename
3328 expanded at configuration time, for convenient use in makefiles.
3330 man1ext (man1dir.U):
3331 This variable contains the extension that the manual page should
3332 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3335 man3dir (man3dir.U):
3336 This variable contains the name of the directory in which manual
3337 source pages are to be put. It is the responsibility of the
3338 Makefile.SH to get the value of this into the proper command.
3339 You must be prepared to do the ~name expansion yourself.
3341 man3direxp (man3dir.U):
3342 This variable is the same as the man3dir variable, but is filename
3343 expanded at configuration time, for convenient use in makefiles.
3345 man3ext (man3dir.U):
3346 This variable contains the extension that the manual page should
3347 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3351 This variable is used internally by Configure to determine the
3352 full pathname (if any) of the Mcc program. After Configure runs,
3353 the value is reset to a plain "Mcc" and is not useful.
3355 mips_type (usrinc.U):
3356 This variable holds the environment type for the mips system.
3357 Possible values are "BSD 4.3" and "System V".
3360 This variable is used internally by Configure to determine the
3361 full pathname (if any) of the mkdir program. After Configure runs,
3362 the value is reset to a plain "mkdir" and is not useful.
3364 mmaptype (d_mmap.U):
3365 This symbol contains the type of pointer returned by mmap()
3366 (and simultaneously the type of the first argument).
3367 It can be 'void *' or 'caddr_t'.
3369 modetype (modetype.U):
3370 This variable defines modetype to be something like mode_t,
3371 int, unsigned short, or whatever type is used to declare file
3372 modes for system calls.
3375 This variable is used internally by Configure to determine the
3376 full pathname (if any) of the more program. After Configure runs,
3377 the value is reset to a plain "more" and is not useful.
3379 multiarch (multiarch.U):
3380 This variable conditionally defines the MULTIARCH symbol
3381 which signifies the presence of multiplatform files.
3382 This is normally set by hints files.
3385 This variable is defined but not used by Configure.
3386 The value is a plain '' and is not useful.
3388 myarchname (archname.U):
3389 This variable holds the architecture name computed by Configure in
3390 a previous run. It is not intended to be perused by any user and
3391 should never be set in a hint file.
3393 mydomain (myhostname.U):
3394 This variable contains the eventual value of the MYDOMAIN symbol,
3395 which is the domain of the host the program is going to run on.
3396 The domain must be appended to myhostname to form a complete host name.
3397 The dot comes with mydomain, and need not be supplied by the program.
3399 myhostname (myhostname.U):
3400 This variable contains the eventual value of the MYHOSTNAME symbol,
3401 which is the name of the host the program is going to run on.
3402 The domain is not kept with hostname, but must be gotten from mydomain.
3403 The dot comes with mydomain, and need not be supplied by the program.
3405 myuname (Oldconfig.U):
3406 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3407 pseudo variables assignments in the output are stripped, thank you. The
3408 whole thing is then lower-cased.
3411 This variable contains the '-n' flag if that is what causes the echo
3412 command to suppress newline. Otherwise it is null. Correct usage is
3413 $echo $n "prompt for a question: $c".
3415 need_va_copy (need_va_copy.U):
3416 This symbol, if defined, indicates that the system stores
3417 the variable argument list datatype, va_list, in a format
3418 that cannot be copied by simple assignment, so that some
3419 other means must be used when copying is required.
3420 As such systems vary in their provision (or non-provision)
3421 of copying mechanisms, handy.h defines a platform-
3422 independent macro, Perl_va_copy(src, dst), to do the job.
3424 netdb_hlen_type (netdbtype.U):
3425 This variable holds the type used for the 2nd argument to
3426 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3427 This is only useful if you have gethostbyaddr(), naturally.
3429 netdb_host_type (netdbtype.U):
3430 This variable holds the type used for the 1st argument to
3431 gethostbyaddr(). Usually, this is char * or void *, possibly
3432 with or without a const prefix.
3433 This is only useful if you have gethostbyaddr(), naturally.
3435 netdb_name_type (netdbtype.U):
3436 This variable holds the type used for the argument to
3437 gethostbyname(). Usually, this is char * or const char *.
3438 This is only useful if you have gethostbyname(), naturally.
3440 netdb_net_type (netdbtype.U):
3441 This variable holds the type used for the 1st argument to
3442 getnetbyaddr(). Usually, this is int or long.
3443 This is only useful if you have getnetbyaddr(), naturally.
3446 This variable is used internally by Configure to determine the
3447 full pathname (if any) of the nm program. After Configure runs,
3448 the value is reset to a plain "nm" and is not useful.
3451 This variable holds the options that may be necessary for nm.
3453 nm_so_opt (usenm.U):
3454 This variable holds the options that may be necessary for nm
3455 to work on a shared library but that can not be used on an
3456 archive library. Currently, this is only used by Linux, where
3457 nm --dynamic is *required* to get symbols from an ELF library which
3458 has been stripped, but nm --dynamic is *fatal* on an archive library.
3459 Maybe Linux should just always set usenm=false.
3461 nonxs_ext (Extensions.U):
3462 This variable holds a list of all non-xs extensions included
3463 in the package. All of them will be built.
3466 This variable is used internally by Configure to determine the
3467 full pathname (if any) of the nroff program. After Configure runs,
3468 the value is reset to a plain "nroff" and is not useful.
3470 nv_preserves_uv_bits (perlxv.U):
3471 This variable indicates how many of bits type uvtype
3472 a variable nvtype can preserve.
3474 nveformat (perlxvf.U):
3475 This variable contains the format string used for printing
3476 a Perl NV using %e-ish floating point format.
3478 nvEUformat (perlxvf.U):
3479 This variable contains the format string used for printing
3480 a Perl NV using %E-ish floating point format.
3482 nvfformat (perlxvf.U):
3483 This variable confains the format string used for printing
3484 a Perl NV using %f-ish floating point format.
3486 nvFUformat (perlxvf.U):
3487 This variable confains the format string used for printing
3488 a Perl NV using %F-ish floating point format.
3490 nvgformat (perlxvf.U):
3491 This variable contains the format string used for printing
3492 a Perl NV using %g-ish floating point format.
3494 nvGUformat (perlxvf.U):
3495 This variable contains the format string used for printing
3496 a Perl NV using %G-ish floating point format.
3499 This variable is the size of an NV in bytes.
3502 This variable contains the C type used for Perl's NV.
3504 o_nonblock (nblock_io.U):
3505 This variable bears the symbol value to be used during open() or fcntl()
3506 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3507 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3508 but that is only supported by some devices.
3511 This is an old synonym for _o.
3513 old_pthread_create_joinable (d_pthrattrj.U):
3514 This variable defines the constant to use for creating joinable
3515 (aka undetached) pthreads. Unused if pthread.h defines
3516 PTHREAD_CREATE_JOINABLE. If used, possible values are
3517 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3519 optimize (ccflags.U):
3520 This variable contains any optimizer/debugger flag that should be used.
3521 It is up to the Makefile to use it.
3523 orderlib (orderlib.U):
3524 This variable is "true" if the components of libraries must be ordered
3525 (with `lorder $* | tsort`) before placing them in an archive. Set to
3526 "false" if ranlib or ar can generate random libraries.
3528 osname (Oldconfig.U):
3529 This variable contains the operating system name (e.g. sunos,
3530 solaris, hpux, etc.). It can be useful later on for setting
3531 defaults. Any spaces are replaced with underscores. It is set
3532 to a null string if we can't figure it out.
3534 osvers (Oldconfig.U):
3535 This variable contains the operating system version (e.g.
3536 4.1.3, 5.2, etc.). It is primarily used for helping select
3537 an appropriate hints file, but might be useful elsewhere for
3538 setting defaults. It is set to '' if we can't figure it out.
3539 We try to be flexible about how much of the version number
3540 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3541 same for this package, hints files might just be os_4.0 or
3542 os_4.1, etc., not keeping separate files for each little release.
3544 otherlibdirs (otherlibdirs.U):
3545 This variable contains a colon-separated set of paths for the perl
3546 binary to search for additional library files or modules.
3547 These directories will be tacked to the end of @INC.
3548 Perl will automatically search below each path for version-
3549 and architecture-specific directories. See inc_version_list
3551 A value of ' ' means 'none' and is used to preserve this value
3552 for the next run through Configure.
3554 package (package.U):
3555 This variable contains the name of the package being constructed.
3556 It is primarily intended for the use of later Configure units.
3559 This variable contains the name of the preferred pager on the system.
3560 Usual values are (the full pathnames of) more, less, pg, or cat.
3563 This variable contains a command that produces the text of the
3564 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3565 "ypcat passwd" when NIS is used.
3566 On some systems, such as os390, there may be no equivalent
3567 command, in which case this variable is unset.
3569 patchlevel (patchlevel.U):
3570 The patchlevel level of this package.
3571 The value of patchlevel comes from the patchlevel.h file.
3572 In a version number such as 5.6.1, this is the "6".
3573 In patchlevel.h, this is referred to as "PERL_VERSION".
3576 This is an old synonym for p_ in Head.U, the character
3577 used to separate elements in the command shell search PATH.
3580 This variable contains the full path (if any) to a previously
3581 installed perl5.005 or later suitable for running the script
3582 to determine inc_version_list.
3585 This variable is defined but not used by Configure.
3586 The value is a plain '' and is not useful.
3588 perl_patchlevel (patchlevel.U):
3589 This is the Perl patch level, a numeric change identifier,
3590 as defined by whichever source code maintenance system
3591 is used to maintain the patches; currently Perforce.
3592 It does not correlate with the Perl version numbers or
3593 the maintenance versus development dichotomy except
3594 by also being increasing.
3596 PERL_REVISION (Oldsyms.U):
3597 In a Perl version number such as 5.6.2, this is the 5.
3598 This value is manually set in patchlevel.h
3600 PERL_SUBVERSION (Oldsyms.U):
3601 In a Perl version number such as 5.6.2, this is the 2.
3602 Values greater than 50 represent potentially unstable
3603 development subversions.
3604 This value is manually set in patchlevel.h
3606 PERL_VERSION (Oldsyms.U):
3607 In a Perl version number such as 5.6.2, this is the 6.
3608 This value is manually set in patchlevel.h
3610 perladmin (perladmin.U):
3611 Electronic mail address of the perl5 administrator.
3614 The list of libraries needed by Perl only (any libraries needed
3615 by extensions only will by dropped, if using dynamic loading).
3617 perlpath (perlpath.U):
3618 This variable contains the eventual value of the PERLPATH symbol,
3619 which contains the name of the perl interpreter to be used in
3620 shell scripts and in the "eval 'exec'" idiom. This variable is
3621 not necessarily the pathname of the file containing the perl
3622 interpreter; you must append the executable extension (_exe) if
3623 it is not already present. Note that Perl code that runs during
3624 the Perl build process cannot reference this variable, as Perl
3625 may not have been installed, or even if installed, may be a
3626 different version of Perl.
3629 This variable is used internally by Configure to determine the
3630 full pathname (if any) of the pg program. After Configure runs,
3631 the value is reset to a plain "pg" and is not useful.
3633 phostname (myhostname.U):
3634 This variable contains the eventual value of the PHOSTNAME symbol,
3635 which is a command that can be fed to popen() to get the host name.
3636 The program should probably not presume that the domain is or isn't
3639 pidtype (pidtype.U):
3640 This variable defines PIDTYPE to be something like pid_t, int,
3641 ushort, or whatever type is used to declare process ids in the kernel.
3644 Holds the private path used by Configure to find out the libraries.
3645 Its value is prepend to libpth. This variable takes care of special
3646 machines, like the mips. Usually, it should be empty.
3648 pm_apiversion (xs_apiversion.U):
3649 This variable contains the version of the oldest perl
3650 compatible with the present perl. (That is, pure perl modules
3651 written for $pm_apiversion will still work for the current
3652 version). perl.c:incpush() and lib/lib.pm will automatically
3653 search in $sitelib for older directories across major versions
3654 back to pm_apiversion. This is only useful if you have a perl
3655 library directory tree structured like the default one. The
3656 versioned site_perl library was introduced in 5.005, so that's
3657 the default setting for this variable. It's hard to imagine
3658 it changing before Perl6. It is included here for symmetry
3659 with xs_apiveprsion -- the searching algorithms will
3660 (presumably) be similar.
3661 See the INSTALL file for how this works.
3664 This variable is defined but not used by Configure.
3665 The value is a plain '' and is not useful.
3668 This variable is defined but not used by Configure.
3669 The value is a plain '' and is not useful.
3672 This variable holds the name of the directory below which the
3673 user will install the package. Usually, this is /usr/local, and
3674 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3675 man pages in /usr/local/man, etc. It is only used to set defaults
3676 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3678 prefixexp (prefix.U):
3679 This variable holds the full absolute path of the directory below
3680 which the user will install the package. Derived from prefix.
3682 privlib (privlib.U):
3683 This variable contains the eventual value of the PRIVLIB symbol,
3684 which is the name of the private library for this package. It may
3685 have a ~ on the front. It is up to the makefile to eventually create
3686 this directory while performing installation (with ~ substitution).
3688 privlibexp (privlib.U):
3689 This variable is the ~name expanded version of privlib, so that you
3690 may use it directly in Makefiles or shell scripts.
3692 procselfexe (d_procselfexe.U):
3693 If d_procselfexe is defined, $procselfexe is the filename
3694 of the symbolic link pointing to the absolute pathname of
3695 the executing program.
3697 prototype (prototype.U):
3698 This variable holds the eventual value of CAN_PROTOTYPE, which
3699 indicates the C compiler can handle funciton prototypes.
3701 ptrsize (ptrsize.U):
3702 This variable contains the value of the PTRSIZE symbol, which
3703 indicates to the C program how many bytes there are in a pointer.
3705 quadkind (quadtype.U):
3706 This variable, if defined, encodes the type of a quad:
3707 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3709 quadtype (quadtype.U):
3710 This variable defines Quad_t to be something like long, int,
3711 long long, int64_t, or whatever type is used for 64-bit integers.
3713 randbits (randfunc.U):
3714 Indicates how many bits are produced by the function used to
3715 generate normalized random numbers.
3717 randfunc (randfunc.U):
3718 Indicates the name of the random number function to use.
3719 Values include drand48, random, and rand. In C programs,
3720 the 'Drand01' macro is defined to generate uniformly distributed
3721 random numbers over the range [0., 1.[ (see drand01 and nrand).
3723 random_r_proto (d_random_r.U):
3724 This variable encodes the prototype of random_r.
3725 It is zero if d_random_r is undef, and one of the
3726 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
3729 randseedtype (randfunc.U):
3730 Indicates the type of the argument of the seedfunc.
3732 ranlib (orderlib.U):
3733 This variable is set to the pathname of the ranlib program, if it is
3734 needed to generate random libraries. Set to ":" if ar can generate
3735 random libraries or if random libraries are not supported
3737 rd_nodata (nblock_io.U):
3738 This variable holds the return code from read() when no data is
3739 present. It should be -1, but some systems return 0 when O_NDELAY is
3740 used, which is a shame because you cannot make the difference between
3741 no data and an EOF.. Sigh!
3743 readdir64_r_proto (d_readdir64_r.U):
3744 This variable encodes the prototype of readdir64_r.
3745 It is zero if d_readdir64_r is undef, and one of the
3746 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
3749 readdir_r_proto (d_readdir_r.U):
3750 This variable encodes the prototype of readdir_r.
3751 It is zero if d_readdir_r is undef, and one of the
3752 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
3755 revision (patchlevel.U):
3756 The value of revision comes from the patchlevel.h file.
3757 In a version number such as 5.6.1, this is the "5".
3758 In patchlevel.h, this is referred to as "PERL_REVISION".
3761 This variable is used internally by Configure to determine the
3762 full pathname (if any) of the rm program. After Configure runs,
3763 the value is reset to a plain "rm" and is not useful.
3766 This variable is defined but not used by Configure.
3767 The value is a plain '' and is not useful.
3770 This variable contains the command used by Configure
3771 to copy and execute a cross-compiled executable in the
3772 target host. Useful and available only during Perl build.
3773 Empty string '' if not cross-compiling.
3776 This variable contains 'true' or 'false' depending whether the
3777 nm extraction should be performed or not, according to the value
3778 of usenm and the flags on the Configure command line.
3780 sched_yield (d_pthread_y.U):
3781 This variable defines the way to yield the execution
3782 of the current thread.
3784 scriptdir (scriptdir.U):
3785 This variable holds the name of the directory in which the user wants
3786 to put publicly scripts for the package in question. It is either
3787 the same directory as for binaries, or a special one that can be
3788 mounted across different architectures, like /usr/share. Programs
3789 must be prepared to deal with ~name expansion.
3791 scriptdirexp (scriptdir.U):
3792 This variable is the same as scriptdir, but is filename expanded
3793 at configuration time, for programs not wanting to bother with it.
3796 This variable is used internally by Configure to determine the
3797 full pathname (if any) of the sed program. After Configure runs,
3798 the value is reset to a plain "sed" and is not useful.
3800 seedfunc (randfunc.U):
3801 Indicates the random number generating seed function.
3802 Values include srand48, srandom, and srand.
3804 selectminbits (selectminbits.U):
3805 This variable holds the minimum number of bits operated by select.
3806 That is, if you do select(n, ...), how many bits at least will be
3807 cleared in the masks if some activity is detected. Usually this
3808 is either n or 32*ceil(n/32), especially many little-endians do
3809 the latter. This is only useful if you have select(), naturally.
3811 selecttype (selecttype.U):
3812 This variable holds the type used for the 2nd, 3rd, and 4th
3813 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3814 is defined, and 'int *' otherwise. This is only useful if you
3815 have select(), naturally.
3818 This variable is defined but not used by Configure.
3819 The value is a plain '' and is not useful.
3821 setgrent_r_proto (d_setgrent_r.U):
3822 This variable encodes the prototype of setgrent_r.
3823 It is zero if d_setgrent_r is undef, and one of the
3824 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
3827 sethostent_r_proto (d_sethostent_r.U):
3828 This variable encodes the prototype of sethostent_r.
3829 It is zero if d_sethostent_r is undef, and one of the
3830 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
3833 setlocale_r_proto (d_setlocale_r.U):
3834 This variable encodes the prototype of setlocale_r.
3835 It is zero if d_setlocale_r is undef, and one of the
3836 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
3839 setnetent_r_proto (d_setnetent_r.U):
3840 This variable encodes the prototype of setnetent_r.
3841 It is zero if d_setnetent_r is undef, and one of the
3842 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
3845 setprotoent_r_proto (d_setprotoent_r.U):
3846 This variable encodes the prototype of setprotoent_r.
3847 It is zero if d_setprotoent_r is undef, and one of the
3848 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
3851 setpwent_r_proto (d_setpwent_r.U):
3852 This variable encodes the prototype of setpwent_r.
3853 It is zero if d_setpwent_r is undef, and one of the
3854 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
3857 setservent_r_proto (d_setservent_r.U):
3858 This variable encodes the prototype of setservent_r.
3859 It is zero if d_setservent_r is undef, and one of the
3860 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
3864 This variable contains the full pathname of the shell used
3865 on this system to execute Bourne shell scripts. Usually, this will be
3866 /bin/sh, though it's possible that some systems will have /bin/ksh,
3867 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3869 This unit comes before Options.U, so you can't set sh with a '-D'
3870 option, though you can override this (and startsh)
3871 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3874 This variable is defined but not used by Configure.
3875 The value is a plain '' and is not useful.
3877 sharpbang (spitshell.U):
3878 This variable contains the string #! if this system supports that
3881 shmattype (d_shmat.U):
3882 This symbol contains the type of pointer returned by shmat().
3883 It can be 'void *' or 'char *'.
3885 shortsize (intsize.U):
3886 This variable contains the value of the SHORTSIZE symbol which
3887 indicates to the C program how many bytes there are in a short.
3889 shrpenv (libperl.U):
3890 If the user builds a shared libperl.so, then we need to tell the
3891 'perl' executable where it will be able to find the installed libperl.so.
3892 One way to do this on some systems is to set the environment variable
3893 LD_RUN_PATH to the directory that will be the final location of the
3894 shared libperl.so. The makefile can use this with something like
3895 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3897 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3900 See the main perl Makefile.SH for actual working usage.
3901 Alternatively, we might be able to use a command line option such
3902 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
3903 $archlibexp/CORE (Linux).
3905 shsharp (spitshell.U):
3906 This variable tells further Configure units whether your sh can
3909 sig_count (sig_name.U):
3910 This variable holds a number larger than the largest valid
3911 signal number. This is usually the same as the NSIG macro.
3913 sig_name (sig_name.U):
3914 This variable holds the signal names, space separated. The leading
3915 SIG in signal name is removed. A ZERO is prepended to the
3916 list. This is currently not used.
3918 sig_name_init (sig_name.U):
3919 This variable holds the signal names, enclosed in double quotes and
3920 separated by commas, suitable for use in the SIG_NAME definition
3921 below. A "ZERO" is prepended to the list, and the list is
3922 terminated with a plain 0. The leading SIG in signal names
3923 is removed. See sig_num.
3925 sig_num (sig_name.U):
3926 This variable holds the signal numbers, space separated. A ZERO is
3927 prepended to the list (corresponding to the fake SIGZERO), and
3928 the list is terminated with a 0. Those numbers correspond to
3929 the value of the signal listed in the same place within the
3932 sig_num_init (sig_name.U):
3933 This variable holds the signal numbers, enclosed in double quotes and
3934 separated by commas, suitable for use in the SIG_NUM definition
3935 below. A "ZERO" is prepended to the list, and the list is
3936 terminated with a plain 0.
3938 sig_size (sig_name.U):
3939 This variable contains the number of elements of the sig_name
3940 and sig_num arrays, excluding the final NULL entry.
3942 signal_t (d_voidsig.U):
3943 This variable holds the type of the signal handler (void or int).
3945 sitearch (sitearch.U):
3946 This variable contains the eventual value of the SITEARCH symbol,
3947 which is the name of the private library for this package. It may
3948 have a ~ on the front. It is up to the makefile to eventually create
3949 this directory while performing installation (with ~ substitution).
3950 The standard distribution will put nothing in this directory.
3951 After perl has been installed, users may install their own local
3952 architecture-dependent modules in this directory with
3953 MakeMaker Makefile.PL
3954 or equivalent. See INSTALL for details.
3956 sitearchexp (sitearch.U):
3957 This variable is the ~name expanded version of sitearch, so that you
3958 may use it directly in Makefiles or shell scripts.
3960 sitebin (sitebin.U):
3961 This variable holds the name of the directory in which the user wants
3962 to put add-on publicly executable files for the package in question. It
3963 is most often a local directory such as /usr/local/bin. Programs using
3964 this variable must be prepared to deal with ~name substitution.
3965 The standard distribution will put nothing in this directory.
3966 After perl has been installed, users may install their own local
3967 executables in this directory with
3968 MakeMaker Makefile.PL
3969 or equivalent. See INSTALL for details.
3971 sitebinexp (sitebin.U):
3972 This is the same as the sitebin variable, but is filename expanded at
3973 configuration time, for use in your makefiles.
3975 sitelib (sitelib.U):
3976 This variable contains the eventual value of the SITELIB symbol,
3977 which is the name of the private library for this package. It may
3978 have a ~ on the front. It is up to the makefile to eventually create
3979 this directory while performing installation (with ~ substitution).
3980 The standard distribution will put nothing in this directory.
3981 After perl has been installed, users may install their own local
3982 architecture-independent modules in this directory with
3983 MakeMaker Makefile.PL
3984 or equivalent. See INSTALL for details.
3986 sitelib_stem (sitelib.U):
3987 This variable is $sitelibexp with any trailing version-specific component
3988 removed. The elements in inc_version_list (inc_version_list.U) can
3989 be tacked onto this variable to generate a list of directories to search.
3991 sitelibexp (sitelib.U):
3992 This variable is the ~name expanded version of sitelib, so that you
3993 may use it directly in Makefiles or shell scripts.
3995 siteprefix (siteprefix.U):
3996 This variable holds the full absolute path of the directory below
3997 which the user will install add-on packages.
3998 See INSTALL for usage and examples.
4000 siteprefixexp (siteprefix.U):
4001 This variable holds the full absolute path of the directory below
4002 which the user will install add-on packages. Derived from siteprefix.
4004 sizesize (sizesize.U):
4005 This variable contains the size of a sizetype in bytes.
4007 sizetype (sizetype.U):
4008 This variable defines sizetype to be something like size_t,
4009 unsigned long, or whatever type is used to declare length
4010 parameters for string functions.
4013 This variable is defined but not used by Configure.
4014 The value is a plain '' and is not useful.
4017 This variable is defined but not used by Configure.
4018 The value is a plain '' and is not useful.
4021 This variable holds the extension used to identify shared libraries
4022 (also known as shared objects) on the system. Usually set to 'so'.
4024 sockethdr (d_socket.U):
4025 This variable has any cpp '-I' flags needed for socket support.
4027 socketlib (d_socket.U):
4028 This variable has the names of any libraries needed for socket support.
4030 socksizetype (socksizetype.U):
4031 This variable holds the type used for the size argument
4032 for various socket calls like accept. Usual values include
4033 socklen_t, size_t, and int.
4036 This variable is used internally by Configure to determine the
4037 full pathname (if any) of the sort program. After Configure runs,
4038 the value is reset to a plain "sort" and is not useful.
4040 spackage (package.U):
4041 This variable contains the name of the package being constructed,
4042 with the first letter uppercased, i.e. suitable for starting
4045 spitshell (spitshell.U):
4046 This variable contains the command necessary to spit out a runnable
4047 shell on this system. It is either cat or a grep '-v' for # comments.
4049 sPRId64 (quadfio.U):
4050 This variable, if defined, contains the string used by stdio to
4051 format 64-bit decimal numbers (format 'd') for output.
4053 sPRIeldbl (longdblfio.U):
4054 This variable, if defined, contains the string used by stdio to
4055 format long doubles (format 'e') for output.
4057 sPRIEUldbl (longdblfio.U):
4058 This variable, if defined, contains the string used by stdio to
4059 format long doubles (format 'E') for output.
4060 The 'U' in the name is to separate this from sPRIeldbl so that even
4061 case-blind systems can see the difference.
4063 sPRIfldbl (longdblfio.U):
4064 This variable, if defined, contains the string used by stdio to
4065 format long doubles (format 'f') for output.
4067 sPRIFUldbl (longdblfio.U):
4068 This variable, if defined, contains the string used by stdio to
4069 format long doubles (format 'F') for output.
4070 The 'U' in the name is to separate this from sPRIfldbl so that even
4071 case-blind systems can see the difference.
4073 sPRIgldbl (longdblfio.U):
4074 This variable, if defined, contains the string used by stdio to
4075 format long doubles (format 'g') for output.
4077 sPRIGUldbl (longdblfio.U):
4078 This variable, if defined, contains the string used by stdio to
4079 format long doubles (format 'G') for output.
4080 The 'U' in the name is to separate this from sPRIgldbl so that even
4081 case-blind systems can see the difference.
4083 sPRIi64 (quadfio.U):
4084 This variable, if defined, contains the string used by stdio to
4085 format 64-bit decimal numbers (format 'i') for output.
4087 sPRIo64 (quadfio.U):
4088 This variable, if defined, contains the string used by stdio to
4089 format 64-bit octal numbers (format 'o') for output.
4091 sPRIu64 (quadfio.U):
4092 This variable, if defined, contains the string used by stdio to
4093 format 64-bit unsigned decimal numbers (format 'u') for output.
4095 sPRIx64 (quadfio.U):
4096 This variable, if defined, contains the string used by stdio to
4097 format 64-bit hexadecimal numbers (format 'x') for output.
4099 sPRIXU64 (quadfio.U):
4100 This variable, if defined, contains the string used by stdio to
4101 format 64-bit hExADECimAl numbers (format 'X') for output.
4102 The 'U' in the name is to separate this from sPRIx64 so that even
4103 case-blind systems can see the difference.
4105 srand48_r_proto (d_srand48_r.U):
4106 This variable encodes the prototype of srand48_r.
4107 It is zero if d_srand48_r is undef, and one of the
4108 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4111 srandom_r_proto (d_srandom_r.U):
4112 This variable encodes the prototype of srandom_r.
4113 It is zero if d_srandom_r is undef, and one of the
4114 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4118 This variable holds the path to the package source. It is up to
4119 the Makefile to use this variable and set VPATH accordingly to
4120 find the sources remotely.
4122 sSCNfldbl (longdblfio.U):
4123 This variable, if defined, contains the string used by stdio to
4124 format long doubles (format 'f') for input.
4126 ssizetype (ssizetype.U):
4127 This variable defines ssizetype to be something like ssize_t,
4128 long or int. It is used by functions that return a count
4129 of bytes or an error condition. It must be a signed type.
4130 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4132 startperl (startperl.U):
4133 This variable contains the string to put on the front of a perl
4134 script to make sure (hopefully) that it runs with perl and not some
4135 shell. Of course, that leading line must be followed by the classical
4137 eval 'exec perl -S $0 ${1+"$@"}'
4138 if $running_under_some_shell;
4139 to guarantee perl startup should the shell execute the script. Note
4140 that this magic incatation is not understood by csh.
4142 startsh (startsh.U):
4143 This variable contains the string to put on the front of a shell
4144 script to make sure (hopefully) that it runs with sh and not some
4147 static_ext (Extensions.U):
4148 This variable holds a list of XS extension files we want to
4149 link statically into the package. It is used by Makefile.
4151 stdchar (stdchar.U):
4152 This variable conditionally defines STDCHAR to be the type of char
4153 used in stdio.h. It has the values "unsigned char" or "char".
4155 stdio_base (d_stdstdio.U):
4156 This variable defines how, given a FILE pointer, fp, to access the
4157 _base field (or equivalent) of stdio.h's FILE structure. This will
4158 be used to define the macro FILE_base(fp).
4160 stdio_bufsiz (d_stdstdio.U):
4161 This variable defines how, given a FILE pointer, fp, to determine
4162 the number of bytes store in the I/O buffer pointer to by the
4163 _base field (or equivalent) of stdio.h's FILE structure. This will
4164 be used to define the macro FILE_bufsiz(fp).
4166 stdio_cnt (d_stdstdio.U):
4167 This variable defines how, given a FILE pointer, fp, to access the
4168 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4169 be used to define the macro FILE_cnt(fp).
4171 stdio_filbuf (d_stdstdio.U):
4172 This variable defines how, given a FILE pointer, fp, to tell
4173 stdio to refill its internal buffers (?). This will
4174 be used to define the macro FILE_filbuf(fp).
4176 stdio_ptr (d_stdstdio.U):
4177 This variable defines how, given a FILE pointer, fp, to access the
4178 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4179 be used to define the macro FILE_ptr(fp).
4181 stdio_stream_array (stdio_streams.U):
4182 This variable tells the name of the array holding the stdio streams.
4183 Usual values include _iob, __iob, and __sF.
4185 strerror_r_proto (d_strerror_r.U):
4186 This variable encodes the prototype of strerror_r.
4187 It is zero if d_strerror_r is undef, and one of the
4188 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4191 strings (i_string.U):
4192 This variable holds the full path of the string header that will be
4193 used. Typically /usr/include/string.h or /usr/include/strings.h.
4196 This variable is defined but not used by Configure.
4197 The value is a plain '' and is not useful.
4199 subversion (patchlevel.U):
4200 The subversion level of this package.
4201 The value of subversion comes from the patchlevel.h file.
4202 In a version number such as 5.6.1, this is the "1".
4203 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4204 This is unique to perl.
4207 This variable holds the place where the manual is located on this
4208 system. It is not the place where the user wants to put his manual
4209 pages. Rather it is the place where Configure may look to find manual
4210 for unix commands (section 1 of the manual usually). See mansrc.
4213 This variable is defined but not used by Configure.
4214 The value is a plain '' and is not useful.
4217 This variable is defined but not used by Configure.
4218 The value is a plain '' and is not useful.
4220 targetarch (Cross.U):
4221 If cross-compiling, this variable contains the target architecture.
4222 If not, this will be empty.
4225 This variable is defined but not used by Configure.
4226 The value is a plain '' and is not useful.
4229 This variable is defined but not used by Configure.
4230 The value is a plain '' and is not useful.
4233 This variable is used internally by Configure to determine the
4234 full pathname (if any) of the test program. After Configure runs,
4235 the value is reset to a plain "test" and is not useful.
4237 timeincl (i_time.U):
4238 This variable holds the full path of the included time header(s).
4240 timetype (d_time.U):
4241 This variable holds the type returned by time(). It can be long,
4242 or time_t on BSD sites (in which case <sys/types.h> should be
4243 included). Anyway, the type Time_t should be used.
4245 tmpnam_r_proto (d_tmpnam_r.U):
4246 This variable encodes the prototype of tmpnam_r.
4247 It is zero if d_tmpnam_r is undef, and one of the
4248 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4252 This variable contains the command used by Configure
4253 to copy to from the target host. Useful and available
4254 only during Perl build.
4255 The string ':' if not cross-compiling.
4258 This variable is used internally by Configure to determine the
4259 full pathname (if any) of the touch program. After Configure runs,
4260 the value is reset to a plain "touch" and is not useful.
4263 This variable is used internally by Configure to determine the
4264 full pathname (if any) of the tr program. After Configure runs,
4265 the value is reset to a plain "tr" and is not useful.
4268 This variable contains the value to be passed to the tr(1)
4269 command to transliterate a newline. Typical values are
4270 '\012' and '\n'. This is needed for EBCDIC systems where
4271 newline is not necessarily '\012'.
4274 This variable is defined but not used by Configure.
4275 The value is a plain '' and is not useful.
4277 ttyname_r_proto (d_ttyname_r.U):
4278 This variable encodes the prototype of ttyname_r.
4279 It is zero if d_ttyname_r is undef, and one of the
4280 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4284 This variable is the size of an U16 in bytes.
4287 This variable contains the C type used for Perl's U16.
4290 This variable is the size of an U32 in bytes.
4293 This variable contains the C type used for Perl's U32.
4296 This variable is the size of an U64 in bytes.
4299 This variable contains the C type used for Perl's U64.
4302 This variable is the size of an U8 in bytes.
4305 This variable contains the C type used for Perl's U8.
4308 This variable contains the format string used for printing a Uid_t.
4310 uidsign (uidsign.U):
4311 This variable contains the signedness of a uidtype.
4312 1 for unsigned, -1 for signed.
4314 uidsize (uidsize.U):
4315 This variable contains the size of a uidtype in bytes.
4317 uidtype (uidtype.U):
4318 This variable defines Uid_t to be something like uid_t, int,
4319 ushort, or whatever type is used to declare user ids in the kernel.
4322 This variable is used internally by Configure to determine the
4323 full pathname (if any) of the uname program. After Configure runs,
4324 the value is reset to a plain "uname" and is not useful.
4327 This variable is used internally by Configure to determine the
4328 full pathname (if any) of the uniq program. After Configure runs,
4329 the value is reset to a plain "uniq" and is not useful.
4331 uquadtype (quadtype.U):
4332 This variable defines Uquad_t to be something like unsigned long,
4333 unsigned int, unsigned long long, uint64_t, or whatever type is
4334 used for 64-bit integers.
4336 use5005threads (usethreads.U):
4337 This variable conditionally defines the USE_5005THREADS symbol,
4338 and indicates that Perl should be built to use the 5.005-based
4339 threading implementation.
4341 use64bitall (use64bits.U):
4342 This variable conditionally defines the USE_64_BIT_ALL symbol,
4343 and indicates that 64-bit integer types should be used
4344 when available. The maximal possible
4345 64-bitness is employed: LP64 or ILP64, meaning that you will
4346 be able to use more than 2 gigabytes of memory. This mode is
4347 even more binary incompatible than USE_64_BIT_INT. You may not
4348 be able to run the resulting executable in a 32-bit CPU at all or
4349 you may need at least to reboot your OS to 64-bit mode.
4351 use64bitint (use64bits.U):
4352 This variable conditionally defines the USE_64_BIT_INT symbol,
4353 and indicates that 64-bit integer types should be used
4354 when available. The minimal possible 64-bitness
4355 is employed, just enough to get 64-bit integers into Perl.
4356 This may mean using for example "long longs", while your memory
4357 may still be limited to 2 gigabytes.
4359 usecrosscompile (Cross.U):
4360 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4361 and indicates that Perl has been cross-compiled.
4364 This variable indicates if the system supports dynamic
4365 loading of some sort. See also dlsrc and dlobj.
4367 useithreads (usethreads.U):
4368 This variable conditionally defines the USE_ITHREADS symbol,
4369 and indicates that Perl should be built to use the interpreter-based
4370 threading implementation.
4372 uselargefiles (uselfs.U):
4373 This variable conditionally defines the USE_LARGE_FILES symbol,
4374 and indicates that large file interfaces should be used when
4377 uselongdouble (uselongdbl.U):
4378 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4379 and indicates that long doubles should be used when available.
4381 usemorebits (usemorebits.U):
4382 This variable conditionally defines the USE_MORE_BITS symbol,
4383 and indicates that explicit 64-bit interfaces and long doubles
4384 should be used when available.
4386 usemultiplicity (usemultiplicity.U):
4387 This variable conditionally defines the MULTIPLICITY symbol,
4388 and indicates that Perl should be built to use multiplicity.
4390 usemymalloc (mallocsrc.U):
4391 This variable contains y if the malloc that comes with this package
4392 is desired over the system's version of malloc. People often include
4393 special versions of malloc for effiency, but such versions are often
4394 less portable. See also mallocsrc and mallocobj.
4395 If this is 'y', then -lmalloc is removed from $libs.
4398 This variable contains 'true' or 'false' depending whether the
4399 nm extraction is wanted or not.
4401 useopcode (Extensions.U):
4402 This variable holds either 'true' or 'false' to indicate
4403 whether the Opcode extension should be used. The sole
4404 use for this currently is to allow an easy mechanism
4405 for users to skip the Opcode extension from the Configure
4408 useperlio (useperlio.U):
4409 This variable conditionally defines the USE_PERLIO symbol,
4410 and indicates that the PerlIO abstraction should be
4413 useposix (Extensions.U):
4414 This variable holds either 'true' or 'false' to indicate
4415 whether the POSIX extension should be used. The sole
4416 use for this currently is to allow an easy mechanism
4417 for hints files to indicate that POSIX will not compile
4418 on a particular system.
4420 usereentrant (usethreads.U):
4421 This variable conditionally defines the USE_REENTRANT_API symbol,
4422 which indicates that the thread code may try to use the various
4423 _r versions of library functions. This is only potentially
4424 meaningful if usethreads is set and is very experimental, it is
4425 not even prompted for.
4428 This variable is set to true when the user agrees to use sfio.
4429 It is set to false when sfio is not available or when the user
4430 explicitely requests not to use sfio. It is here primarily so
4431 that command-line settings can override the auto-detection of
4432 d_sfio without running into a "WHOA THERE".
4434 useshrplib (libperl.U):
4435 This variable is set to 'yes' if the user wishes
4436 to build a shared libperl, and 'no' otherwise.
4438 usesocks (usesocks.U):
4439 This variable conditionally defines the USE_SOCKS symbol,
4440 and indicates that Perl should be built to use SOCKS.
4442 usethreads (usethreads.U):
4443 This variable conditionally defines the USE_THREADS symbol,
4444 and indicates that Perl should be built to use threads.
4446 usevendorprefix (vendorprefix.U):
4447 This variable tells whether the vendorprefix
4448 and consequently other vendor* paths are in use.
4450 usevfork (d_vfork.U):
4451 This variable is set to true when the user accepts to use vfork.
4452 It is set to false when no vfork is available or when the user
4453 explicitely requests not to use vfork.
4456 This variable holds the path of the include files, which is
4457 usually /usr/include. It is mainly used by other Configure units.
4460 This variable is defined but not used by Configure.
4461 The value is a plain '' and is not useful.
4463 uvoformat (perlxvf.U):
4464 This variable contains the format string used for printing
4465 a Perl UV as an unsigned octal integer.
4468 This variable is the size of a UV in bytes.
4471 This variable contains the C type used for Perl's UV.
4473 uvuformat (perlxvf.U):
4474 This variable contains the format string used for printing
4475 a Perl UV as an unsigned decimal integer.
4477 uvxformat (perlxvf.U):
4478 This variable contains the format string used for printing
4479 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4481 uvXUformat (perlxvf.U):
4482 This variable contains the format string used for printing
4483 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4485 vendorarch (vendorarch.U):
4486 This variable contains the value of the PERL_VENDORARCH symbol.
4487 It may have a ~ on the front.
4488 The standard distribution will put nothing in this directory.
4489 Vendors who distribute perl may wish to place their own
4490 architecture-dependent modules and extensions in this directory with
4491 MakeMaker Makefile.PL INSTALLDIRS=vendor
4492 or equivalent. See INSTALL for details.
4494 vendorarchexp (vendorarch.U):
4495 This variable is the ~name expanded version of vendorarch, so that you
4496 may use it directly in Makefiles or shell scripts.
4498 vendorbin (vendorbin.U):
4499 This variable contains the eventual value of the VENDORBIN symbol.
4500 It may have a ~ on the front.
4501 The standard distribution will put nothing in this directory.
4502 Vendors who distribute perl may wish to place additional
4503 binaries in this directory with
4504 MakeMaker Makefile.PL INSTALLDIRS=vendor
4505 or equivalent. See INSTALL for details.
4507 vendorbinexp (vendorbin.U):
4508 This variable is the ~name expanded version of vendorbin, so that you
4509 may use it directly in Makefiles or shell scripts.
4511 vendorlib (vendorlib.U):
4512 This variable contains the eventual value of the VENDORLIB symbol,
4513 which is the name of the private library for this package.
4514 The standard distribution will put nothing in this directory.
4515 Vendors who distribute perl may wish to place their own
4516 modules in this directory with
4517 MakeMaker Makefile.PL INSTALLDIRS=vendor
4518 or equivalent. See INSTALL for details.
4520 vendorlib_stem (vendorlib.U):
4521 This variable is $vendorlibexp with any trailing version-specific component
4522 removed. The elements in inc_version_list (inc_version_list.U) can
4523 be tacked onto this variable to generate a list of directories to search.
4525 vendorlibexp (vendorlib.U):
4526 This variable is the ~name expanded version of vendorlib, so that you
4527 may use it directly in Makefiles or shell scripts.
4529 vendorprefix (vendorprefix.U):
4530 This variable holds the full absolute path of the directory below
4531 which the vendor will install add-on packages.
4532 See INSTALL for usage and examples.
4534 vendorprefixexp (vendorprefix.U):
4535 This variable holds the full absolute path of the directory below
4536 which the vendor will install add-on packages. Derived from vendorprefix.
4538 version (patchlevel.U):
4539 The full version number of this package, such as 5.6.1 (or 5_6_1).
4540 This combines revision, patchlevel, and subversion to get the
4541 full version number, including any possible subversions.
4542 This is suitable for use as a directory name, and hence is
4543 filesystem dependent.
4545 version_patchlevel_string (patchlevel.U):
4546 This is a string combining version, subversion and
4547 perl_patchlevel (if perl_patchlevel is non-zero).
4548 It is typically something like
4549 'version 7 subversion 1' or
4550 'version 7 subversion 1 patchlevel 11224'
4551 It is computed here to avoid duplication of code in myconfig.SH
4554 versiononly (versiononly.U):
4555 If set, this symbol indicates that only the version-specific
4556 components of a perl installation should be installed.
4557 This may be useful for making a test installation of a new
4558 version without disturbing the existing installation.
4559 Setting versiononly is equivalent to setting installperl's -v option.
4560 In particular, the non-versioned scripts and programs such as
4561 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
4562 (see INSTALL for a more complete list). Nor are the man
4564 Usually, this is undef.
4567 This variable is defined but not used by Configure.
4568 The value is a plain '' and is not useful.
4570 voidflags (voidflags.U):
4571 This variable contains the eventual value of the VOIDFLAGS symbol,
4572 which indicates how much support of the void type is given by this
4573 compiler. See VOIDFLAGS for more info.
4576 This variable holds extra path (space-separated) used to find
4577 libraries on this platform, for example CPU-specific libraries
4578 (on multi-CPU platforms) may be listed here.
4580 xs_apiversion (xs_apiversion.U):
4581 This variable contains the version of the oldest perl binary
4582 compatible with the present perl. perl.c:incpush() and
4583 lib/lib.pm will automatically search in $sitearch for older
4584 directories across major versions back to xs_apiversion.
4585 This is only useful if you have a perl library directory tree
4586 structured like the default one.
4587 See INSTALL for how this works.
4588 The versioned site_perl directory was introduced in 5.005,
4589 so that is the lowest possible value.
4590 Since this can depend on compile time options
4591 it is set by Configure. Other non-default sources
4592 of potential incompatibility, such as multiplicity, threads,
4593 debugging, 64bits, sfio, etc., are not checked for currently,
4594 though in principle we could go snooping around in old
4598 This variable holds the name of the compiler compiler we
4599 want to use in the Makefile. It can be yacc, byacc, or bison -y.
4602 This variable contains any additional yacc flags desired by the
4603 user. It is up to the Makefile to use this.
4606 This variable is defined but not used by Configure.
4607 The value is a plain '' and is not useful.
4610 This variable is used internally by Configure to determine the
4611 full pathname (if any) of the zip program. After Configure runs,
4612 the value is reset to a plain "zip" and is not useful.