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 concatenation 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_AINTL symbol, which
384 indicates to the C program that the aintl() routine is available.
385 If copysignl is also present we can emulate modfl.
388 This variable conditionally defines the HAS_ALARM symbol, which
389 indicates to the C program that the alarm() routine is available.
391 d_archlib (archlib.U):
392 This variable conditionally defines ARCHLIB to hold the pathname
393 of architecture-dependent library files for $package. If
394 $archlib is the same as $privlib, then this is set to undef.
396 d_asctime_r (d_asctime_r.U):
397 This variable conditionally defines the HAS_ASCTIME_R symbol,
398 which indicates to the C program that the asctime_r()
399 routine is available.
402 This variable conditionally defines the HAS_ATOLF symbol, which
403 indicates to the C program that the atolf() routine is available.
406 This variable conditionally defines the HAS_ATOLL symbol, which
407 indicates to the C program that the atoll() routine is available.
409 d_attribute_format (d_attribut_format.U):
410 This variable conditionally defines HASATTRIBUTE_FORMAT, which
411 indicates the C compiler can check for printf-like formats.
413 d_attribute_malloc (d_attribute_malloc.U):
414 This variable conditionally defines HASATTRIBUTE_MALLOC, which
415 indicates the C compiler can understand functions as having
416 malloc-like semantics.
418 d_attribute_nonnull (d_attribute_nonnull.U):
419 This variable conditionally defines HASATTRIBUTE_NONNULL, which
420 indicates that the C compiler can know that certain arguments
421 must not be NULL, and will check accordingly at compile time.
423 d_attribute_noreturn (d_attribute_noreturn.U):
424 This variable conditionally defines HASATTRIBUTE_NORETURN, which
425 indicates that the C compiler can know that certain functions
426 are guaranteed never to return.
428 d_attribute_pure (d_attribute_pure.U):
429 This variable conditionally defines HASATTRIBUTE_PURE, which
430 indicates that the C compiler can know that certain functions
431 are "pure" functions, meaning that they have no side effects, and
432 only rely on function input and/or global data for their results.
434 d_attribute_unused (d_attribute_unused.U):
435 This variable conditionally defines HASATTRIBUTE_UNUSED, which
436 indicates that the C compiler can know that certain variables
437 and arguments may not always be used, and to not throw warnings
438 if they don't get used.
440 d_attribute_warn_unused_result (d_attribute_warn_unused_result.U):
441 This variable conditionally defines
442 HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
443 compiler can know that certain functions have a return values
444 that must not be ignored, such as malloc() or open().
447 This variable conditionally defines the HAS_BCMP symbol if
448 the bcmp() routine is available to compare strings.
451 This variable conditionally defines the HAS_BCOPY symbol if
452 the bcopy() routine is available to copy strings.
455 This symbol conditionally defines the symbol BSD when running on a
458 d_bsdgetpgrp (d_getpgrp.U):
459 This variable conditionally defines USE_BSD_GETPGRP if
460 getpgrp needs one arguments whereas USG one needs none.
462 d_bsdsetpgrp (d_setpgrp.U):
463 This variable conditionally defines USE_BSD_SETPGRP if
464 setpgrp needs two arguments whereas USG one needs none.
465 See also d_setpgid for a POSIX interface.
468 This variable conditionally defines the HAS_BZERO symbol if
469 the bzero() routine is available to set memory to 0.
471 d_casti32 (d_casti32.U):
472 This variable conditionally defines CASTI32, which indicates
473 whether the C compiler can cast large floats to 32-bit ints.
475 d_castneg (d_castneg.U):
476 This variable conditionally defines CASTNEG, which indicates
477 wether the C compiler can cast negative float to unsigned.
479 d_charvspr (d_vprintf.U):
480 This variable conditionally defines CHARVSPRINTF if this system
481 has vsprintf returning type (char*). The trend seems to be to
482 declare it as "int vsprintf()".
485 This variable conditionally defines the HAS_CHOWN symbol, which
486 indicates to the C program that the chown() routine is available.
488 d_chroot (d_chroot.U):
489 This variable conditionally defines the HAS_CHROOT symbol, which
490 indicates to the C program that the chroot() routine is available.
492 d_chsize (d_chsize.U):
493 This variable conditionally defines the CHSIZE symbol, which
494 indicates to the C program that the chsize() routine is available
495 to truncate files. You might need a -lx to get this routine.
498 This variable conditionally defines the HAS_CLASS symbol, which
499 indicates to the C program that the class() routine is available.
501 d_closedir (d_closedir.U):
502 This variable conditionally defines HAS_CLOSEDIR if closedir() is
505 d_cmsghdr_s (d_cmsghdr_s.U):
506 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
507 which indicates that the struct cmsghdr is supported.
510 This variable conditionally defines the HASCONST symbol, which
511 indicates to the C program that this C compiler knows about the
514 d_copysignl (d_copysignl.U):
515 This variable conditionally defines the HAS_COPYSIGNL symbol, which
516 indicates to the C program that the copysignl() routine is available.
517 If aintl is also present we can emulate modfl.
520 This variable conditionally defines the CRYPT symbol, which
521 indicates to the C program that the crypt() routine is available
522 to encrypt passwords and the like.
524 d_crypt_r (d_crypt_r.U):
525 This variable conditionally defines the HAS_CRYPT_R symbol,
526 which indicates to the C program that the crypt_r()
527 routine is available.
530 This variable conditionally defines the CSH symbol, which
531 indicates to the C program that the C-shell exists.
533 d_ctermid_r (d_ctermid_r.U):
534 This variable conditionally defines the HAS_CTERMID_R symbol,
535 which indicates to the C program that the ctermid_r()
536 routine is available.
538 d_ctime_r (d_ctime_r.U):
539 This variable conditionally defines the HAS_CTIME_R symbol,
540 which indicates to the C program that the ctime_r()
541 routine is available.
543 d_cuserid (d_cuserid.U):
544 This variable conditionally defines the HAS_CUSERID symbol, which
545 indicates to the C program that the cuserid() routine is available
546 to get character login names.
548 d_dbl_dig (d_dbl_dig.U):
549 This variable conditionally defines d_dbl_dig if this system's
550 header files provide DBL_DIG, which is the number of significant
551 digits in a double precision number.
553 d_dbminitproto (d_dbminitproto.U):
554 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
555 which indicates to the C program that the system provides
556 a prototype for the dbminit() function. Otherwise, it is
557 up to the program to supply one.
559 d_difftime (d_difftime.U):
560 This variable conditionally defines the HAS_DIFFTIME symbol, which
561 indicates to the C program that the difftime() routine is available.
564 This variable conditionally defines the HAS_DIRFD constant,
565 which indicates to the C program that dirfd() is available
566 to return the file descriptor of a directory stream.
568 d_dirnamlen (i_dirent.U):
569 This variable conditionally defines DIRNAMLEN, which indicates
570 to the C program that the length of directory entry names is
571 provided by a d_namelen field.
573 d_dlerror (d_dlerror.U):
574 This variable conditionally defines the HAS_DLERROR symbol, which
575 indicates to the C program that the dlerror() routine is available.
577 d_dlopen (d_dlopen.U):
578 This variable conditionally defines the HAS_DLOPEN symbol, which
579 indicates to the C program that the dlopen() routine is available.
581 d_dlsymun (d_dlsymun.U):
582 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
583 indicates that we need to prepend an underscore to the symbol
584 name before calling dlsym().
586 d_dosuid (d_dosuid.U):
587 This variable conditionally defines the symbol DOSUID, which
588 tells the C program that it should insert setuid emulation code
589 on hosts which have setuid #! scripts disabled.
591 d_drand48_r (d_drand48_r.U):
592 This variable conditionally defines the HAS_DRAND48_R symbol,
593 which indicates to the C program that the drand48_r()
594 routine is available.
596 d_drand48proto (d_drand48proto.U):
597 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
598 which indicates to the C program that the system provides
599 a prototype for the drand48() function. Otherwise, it is
600 up to the program to supply one.
603 This variable conditionally defines HAS_DUP2 if dup2() is
604 available to duplicate file descriptors.
606 d_eaccess (d_eaccess.U):
607 This variable conditionally defines the HAS_EACCESS symbol, which
608 indicates to the C program that the eaccess() routine is available.
610 d_endgrent (d_endgrent.U):
611 This variable conditionally defines the HAS_ENDGRENT symbol, which
612 indicates to the C program that the endgrent() routine is available
613 for sequential access of the group database.
615 d_endgrent_r (d_endgrent_r.U):
616 This variable conditionally defines the HAS_ENDGRENT_R symbol,
617 which indicates to the C program that the endgrent_r()
618 routine is available.
620 d_endhent (d_endhent.U):
621 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
622 available to close whatever was being used for host queries.
624 d_endhostent_r (d_endhostent_r.U):
625 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
626 which indicates to the C program that the endhostent_r()
627 routine is available.
629 d_endnent (d_endnent.U):
630 This variable conditionally defines HAS_ENDNETENT if endnetent() is
631 available to close whatever was being used for network queries.
633 d_endnetent_r (d_endnetent_r.U):
634 This variable conditionally defines the HAS_ENDNETENT_R symbol,
635 which indicates to the C program that the endnetent_r()
636 routine is available.
638 d_endpent (d_endpent.U):
639 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
640 available to close whatever was being used for protocol queries.
642 d_endprotoent_r (d_endprotoent_r.U):
643 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
644 which indicates to the C program that the endprotoent_r()
645 routine is available.
647 d_endpwent (d_endpwent.U):
648 This variable conditionally defines the HAS_ENDPWENT symbol, which
649 indicates to the C program that the endpwent() routine is available
650 for sequential access of the passwd database.
652 d_endpwent_r (d_endpwent_r.U):
653 This variable conditionally defines the HAS_ENDPWENT_R symbol,
654 which indicates to the C program that the endpwent_r()
655 routine is available.
657 d_endsent (d_endsent.U):
658 This variable conditionally defines HAS_ENDSERVENT if endservent() is
659 available to close whatever was being used for service queries.
661 d_endservent_r (d_endservent_r.U):
662 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
663 which indicates to the C program that the endservent_r()
664 routine is available.
666 d_eofnblk (nblock_io.U):
667 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
668 when reading from a non-blocking I/O source.
671 This variable conditionally defines the symbols EUNICE and VAX, which
672 alerts the C program that it must deal with ideosyncracies of VMS.
674 d_faststdio (d_faststdio.U):
675 This variable conditionally defines the HAS_FAST_STDIO symbol,
676 which indicates to the C program that the "fast stdio" is available
677 to manipulate the stdio buffers directly.
679 d_fchdir (d_fchdir.U):
680 This variable conditionally defines the HAS_FCHDIR symbol, which
681 indicates to the C program that the fchdir() routine is available.
683 d_fchmod (d_fchmod.U):
684 This variable conditionally defines the HAS_FCHMOD symbol, which
685 indicates to the C program that the fchmod() routine is available
686 to change mode of opened files.
688 d_fchown (d_fchown.U):
689 This variable conditionally defines the HAS_FCHOWN symbol, which
690 indicates to the C program that the fchown() routine is available
691 to change ownership of opened files.
694 This variable conditionally defines the HAS_FCNTL symbol, and indicates
695 whether the fcntl() function exists
697 d_fcntl_can_lock (d_fcntl_can_lock.U):
698 This variable conditionally defines the FCNTL_CAN_LOCK symbol
699 and indicates whether file locking with fcntl() works.
701 d_fd_macros (d_fd_set.U):
702 This variable contains the eventual value of the HAS_FD_MACROS symbol,
703 which indicates if your C compiler knows about the macros which
704 manipulate an fd_set.
706 d_fd_set (d_fd_set.U):
707 This variable contains the eventual value of the HAS_FD_SET symbol,
708 which indicates if your C compiler knows about the fd_set typedef.
710 d_fds_bits (d_fd_set.U):
711 This variable contains the eventual value of the HAS_FDS_BITS symbol,
712 which indicates if your fd_set typedef contains the fds_bits member.
713 If you have an fd_set typedef, but the dweebs who installed it did
714 a half-fast job and neglected to provide the macros to manipulate
715 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
717 d_fgetpos (d_fgetpos.U):
718 This variable conditionally defines HAS_FGETPOS if fgetpos() is
719 available to get the file position indicator.
721 d_finite (d_finite.U):
722 This variable conditionally defines the HAS_FINITE symbol, which
723 indicates to the C program that the finite() routine is available.
725 d_finitel (d_finitel.U):
726 This variable conditionally defines the HAS_FINITEL symbol, which
727 indicates to the C program that the finitel() routine is available.
729 d_flexfnam (d_flexfnam.U):
730 This variable conditionally defines the FLEXFILENAMES symbol, which
731 indicates that the system supports filenames longer than 14 characters.
734 This variable conditionally defines HAS_FLOCK if flock() is
735 available to do file locking.
737 d_flockproto (d_flockproto.U):
738 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
739 which indicates to the C program that the system provides
740 a prototype for the flock() function. Otherwise, it is
741 up to the program to supply one.
744 This variable conditionally defines the HAS_FORK symbol, which
745 indicates to the C program that the fork() routine is available.
747 d_fp_class (d_fp_class.U):
748 This variable conditionally defines the HAS_FP_CLASS symbol, which
749 indicates to the C program that the fp_class() routine is available.
751 d_fpathconf (d_pathconf.U):
752 This variable conditionally defines the HAS_FPATHCONF symbol, which
753 indicates to the C program that the pathconf() routine is available
754 to determine file-system related limits and options associated
755 with a given open file descriptor.
757 d_fpclass (d_fpclass.U):
758 This variable conditionally defines the HAS_FPCLASS symbol, which
759 indicates to the C program that the fpclass() routine is available.
761 d_fpclassify (d_fpclassify.U):
762 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
763 indicates to the C program that the fpclassify() routine is available.
765 d_fpclassl (d_fpclassl.U):
766 This variable conditionally defines the HAS_FPCLASSL symbol, which
767 indicates to the C program that the fpclassl() routine is available.
769 d_fpos64_t (d_fpos64_t.U):
770 This symbol will be defined if the C compiler supports fpos64_t.
772 d_frexpl (d_frexpl.U):
773 This variable conditionally defines the HAS_FREXPL symbol, which
774 indicates to the C program that the frexpl() routine is available.
776 d_fs_data_s (d_fs_data_s.U):
777 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
778 which indicates that the struct fs_data is supported.
780 d_fseeko (d_fseeko.U):
781 This variable conditionally defines the HAS_FSEEKO symbol, which
782 indicates to the C program that the fseeko() routine is available.
784 d_fsetpos (d_fsetpos.U):
785 This variable conditionally defines HAS_FSETPOS if fsetpos() is
786 available to set the file position indicator.
788 d_fstatfs (d_fstatfs.U):
789 This variable conditionally defines the HAS_FSTATFS symbol, which
790 indicates to the C program that the fstatfs() routine is available.
792 d_fstatvfs (d_statvfs.U):
793 This variable conditionally defines the HAS_FSTATVFS symbol, which
794 indicates to the C program that the fstatvfs() routine is available.
797 This variable conditionally defines the HAS_FSYNC symbol, which
798 indicates to the C program that the fsync() routine is available.
800 d_ftello (d_ftello.U):
801 This variable conditionally defines the HAS_FTELLO symbol, which
802 indicates to the C program that the ftello() routine is available.
805 This variable conditionally defines the HAS_FTIME symbol, which indicates
806 that the ftime() routine exists. The ftime() routine is basically
807 a sub-second accuracy clock.
809 d_Gconvert (d_gconvert.U):
810 This variable holds what Gconvert is defined as to convert
811 floating point numbers into strings. By default, Configure
812 sets this macro to use the first of gconvert, gcvt, or sprintf
813 that pass sprintf-%g-like behaviour tests. If perl is using
814 long doubles, the macro uses the first of the following
815 functions that pass Configure's tests: qgcvt, sprintf (if
816 Configure knows how to make sprintf format long doubles--see
817 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
818 The gconvert_preference and gconvert_ld_preference variables
819 can be used to alter Configure's preferences, for doubles and
820 long doubles, respectively. If present, they contain a
821 space-separated list of one or more of the above function
822 names in the order they should be tried.
824 d_Gconvert may be set to override Configure with a platform-
825 specific function. If this function expects a double, a
826 different value may need to be set by the uselongdouble.cbu
827 call-back unit so that long doubles can be formatted without
830 d_getcwd (d_getcwd.U):
831 This variable conditionally defines the HAS_GETCWD symbol, which
832 indicates to the C program that the getcwd() routine is available
833 to get the current working directory.
835 d_getespwnam (d_getespwnam.U):
836 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
837 available to retrieve enchanced (shadow) password entries by name.
839 d_getfsstat (d_getfsstat.U):
840 This variable conditionally defines the HAS_GETFSSTAT symbol, which
841 indicates to the C program that the getfsstat() routine is available.
843 d_getgrent (d_getgrent.U):
844 This variable conditionally defines the HAS_GETGRENT symbol, which
845 indicates to the C program that the getgrent() routine is available
846 for sequential access of the group database.
848 d_getgrent_r (d_getgrent_r.U):
849 This variable conditionally defines the HAS_GETGRENT_R symbol,
850 which indicates to the C program that the getgrent_r()
851 routine is available.
853 d_getgrgid_r (d_getgrgid_r.U):
854 This variable conditionally defines the HAS_GETGRGID_R symbol,
855 which indicates to the C program that the getgrgid_r()
856 routine is available.
858 d_getgrnam_r (d_getgrnam_r.U):
859 This variable conditionally defines the HAS_GETGRNAM_R symbol,
860 which indicates to the C program that the getgrnam_r()
861 routine is available.
863 d_getgrps (d_getgrps.U):
864 This variable conditionally defines the HAS_GETGROUPS symbol, which
865 indicates to the C program that the getgroups() routine is available
866 to get the list of process groups.
868 d_gethbyaddr (d_gethbyad.U):
869 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
870 indicates to the C program that the gethostbyaddr() routine is available
871 to look up hosts by their IP addresses.
873 d_gethbyname (d_gethbynm.U):
874 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
875 indicates to the C program that the gethostbyname() routine is available
876 to look up host names in some data base or other.
878 d_gethent (d_gethent.U):
879 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
880 available to look up host names in some data base or another.
882 d_gethname (d_gethname.U):
883 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
884 indicates to the C program that the gethostname() routine may be
885 used to derive the host name.
887 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
888 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
889 which indicates to the C program that the gethostbyaddr_r()
890 routine is available.
892 d_gethostbyname_r (d_gethostbyname_r.U):
893 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
894 which indicates to the C program that the gethostbyname_r()
895 routine is available.
897 d_gethostent_r (d_gethostent_r.U):
898 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
899 which indicates to the C program that the gethostent_r()
900 routine is available.
902 d_gethostprotos (d_gethostprotos.U):
903 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
904 which indicates to the C program that <netdb.h> supplies
905 prototypes for the various gethost*() functions.
906 See also netdbtype.U for probing for various netdb types.
908 d_getitimer (d_getitimer.U):
909 This variable conditionally defines the HAS_GETITIMER symbol, which
910 indicates to the C program that the getitimer() routine is available.
912 d_getlogin (d_getlogin.U):
913 This variable conditionally defines the HAS_GETLOGIN symbol, which
914 indicates to the C program that the getlogin() routine is available
915 to get the login name.
917 d_getlogin_r (d_getlogin_r.U):
918 This variable conditionally defines the HAS_GETLOGIN_R symbol,
919 which indicates to the C program that the getlogin_r()
920 routine is available.
922 d_getmnt (d_getmnt.U):
923 This variable conditionally defines the HAS_GETMNT symbol, which
924 indicates to the C program that the getmnt() routine is available
925 to retrieve one or more mount info blocks by filename.
927 d_getmntent (d_getmntent.U):
928 This variable conditionally defines the HAS_GETMNTENT symbol, which
929 indicates to the C program that the getmntent() routine is available
930 to iterate through mounted files to get their mount info.
932 d_getnbyaddr (d_getnbyad.U):
933 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
934 indicates to the C program that the getnetbyaddr() routine is available
935 to look up networks by their IP addresses.
937 d_getnbyname (d_getnbynm.U):
938 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
939 indicates to the C program that the getnetbyname() routine is available
940 to look up networks by their names.
942 d_getnent (d_getnent.U):
943 This variable conditionally defines HAS_GETNETENT if getnetent() is
944 available to look up network names in some data base or another.
946 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
947 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
948 which indicates to the C program that the getnetbyaddr_r()
949 routine is available.
951 d_getnetbyname_r (d_getnetbyname_r.U):
952 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
953 which indicates to the C program that the getnetbyname_r()
954 routine is available.
956 d_getnetent_r (d_getnetent_r.U):
957 This variable conditionally defines the HAS_GETNETENT_R symbol,
958 which indicates to the C program that the getnetent_r()
959 routine is available.
961 d_getnetprotos (d_getnetprotos.U):
962 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
963 which indicates to the C program that <netdb.h> supplies
964 prototypes for the various getnet*() functions.
965 See also netdbtype.U for probing for various netdb types.
967 d_getpagsz (d_getpagsz.U):
968 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
969 is available to get the system page size.
971 d_getpbyname (d_getprotby.U):
972 This variable conditionally defines the HAS_GETPROTOBYNAME
973 symbol, which indicates to the C program that the
974 getprotobyname() routine is available to look up protocols
977 d_getpbynumber (d_getprotby.U):
978 This variable conditionally defines the HAS_GETPROTOBYNUMBER
979 symbol, which indicates to the C program that the
980 getprotobynumber() routine is available to look up protocols
983 d_getpent (d_getpent.U):
984 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
985 available to look up protocols in some data base or another.
987 d_getpgid (d_getpgid.U):
988 This variable conditionally defines the HAS_GETPGID symbol, which
989 indicates to the C program that the getpgid(pid) function
990 is available to get the process group id.
992 d_getpgrp2 (d_getpgrp2.U):
993 This variable conditionally defines the HAS_GETPGRP2 symbol, which
994 indicates to the C program that the getpgrp2() (as in DG/UX) routine
995 is available to get the current process group.
997 d_getpgrp (d_getpgrp.U):
998 This variable conditionally defines HAS_GETPGRP if getpgrp() is
999 available to get the current process group.
1001 d_getppid (d_getppid.U):
1002 This variable conditionally defines the HAS_GETPPID symbol, which
1003 indicates to the C program that the getppid() routine is available
1004 to get the parent process ID.
1006 d_getprior (d_getprior.U):
1007 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1008 is available to get a process's priority.
1010 d_getprotobyname_r (d_getprotobyname_r.U):
1011 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1012 which indicates to the C program that the getprotobyname_r()
1013 routine is available.
1015 d_getprotobynumber_r (d_getprotobynumber_r.U):
1016 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1017 which indicates to the C program that the getprotobynumber_r()
1018 routine is available.
1020 d_getprotoent_r (d_getprotoent_r.U):
1021 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1022 which indicates to the C program that the getprotoent_r()
1023 routine is available.
1025 d_getprotoprotos (d_getprotoprotos.U):
1026 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1027 which indicates to the C program that <netdb.h> supplies
1028 prototypes for the various getproto*() functions.
1029 See also netdbtype.U for probing for various netdb types.
1031 d_getprpwnam (d_getprpwnam.U):
1032 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1033 available to retrieve protected (shadow) password entries by name.
1035 d_getpwent (d_getpwent.U):
1036 This variable conditionally defines the HAS_GETPWENT symbol, which
1037 indicates to the C program that the getpwent() routine is available
1038 for sequential access of the passwd database.
1040 d_getpwent_r (d_getpwent_r.U):
1041 This variable conditionally defines the HAS_GETPWENT_R symbol,
1042 which indicates to the C program that the getpwent_r()
1043 routine is available.
1045 d_getpwnam_r (d_getpwnam_r.U):
1046 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1047 which indicates to the C program that the getpwnam_r()
1048 routine is available.
1050 d_getpwuid_r (d_getpwuid_r.U):
1051 This variable conditionally defines the HAS_GETPWUID_R symbol,
1052 which indicates to the C program that the getpwuid_r()
1053 routine is available.
1055 d_getsbyname (d_getsrvby.U):
1056 This variable conditionally defines the HAS_GETSERVBYNAME
1057 symbol, which indicates to the C program that the
1058 getservbyname() routine is available to look up services
1061 d_getsbyport (d_getsrvby.U):
1062 This variable conditionally defines the HAS_GETSERVBYPORT
1063 symbol, which indicates to the C program that the
1064 getservbyport() routine is available to look up services
1067 d_getsent (d_getsent.U):
1068 This variable conditionally defines HAS_GETSERVENT if getservent() is
1069 available to look up network services in some data base or another.
1071 d_getservbyname_r (d_getservbyname_r.U):
1072 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1073 which indicates to the C program that the getservbyname_r()
1074 routine is available.
1076 d_getservbyport_r (d_getservbyport_r.U):
1077 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1078 which indicates to the C program that the getservbyport_r()
1079 routine is available.
1081 d_getservent_r (d_getservent_r.U):
1082 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1083 which indicates to the C program that the getservent_r()
1084 routine is available.
1086 d_getservprotos (d_getservprotos.U):
1087 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1088 which indicates to the C program that <netdb.h> supplies
1089 prototypes for the various getserv*() functions.
1090 See also netdbtype.U for probing for various netdb types.
1092 d_getspnam (d_getspnam.U):
1093 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1094 available to retrieve SysV shadow password entries by name.
1096 d_getspnam_r (d_getspnam_r.U):
1097 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1098 which indicates to the C program that the getspnam_r()
1099 routine is available.
1101 d_gettimeod (d_ftime.U):
1102 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1103 indicates that the gettimeofday() system call exists (to obtain a
1104 sub-second accuracy clock). You should probably include <sys/resource.h>.
1106 d_gmtime_r (d_gmtime_r.U):
1107 This variable conditionally defines the HAS_GMTIME_R symbol,
1108 which indicates to the C program that the gmtime_r()
1109 routine is available.
1111 d_gnulibc (d_gnulibc.U):
1112 Defined if we're dealing with the GNU C Library.
1114 d_grpasswd (i_grp.U):
1115 This variable conditionally defines GRPASSWD, which indicates
1116 that struct group in <grp.h> contains gr_passwd.
1118 d_hasmntopt (d_hasmntopt.U):
1119 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1120 indicates to the C program that the hasmntopt() routine is available
1121 to query the mount options of file systems.
1123 d_htonl (d_htonl.U):
1124 This variable conditionally defines HAS_HTONL if htonl() and its
1125 friends are available to do network order byte swapping.
1127 d_ilogbl (d_ilogbl.U):
1128 This variable conditionally defines the HAS_ILOGBL symbol, which
1129 indicates to the C program that the ilogbl() routine is available.
1130 If scalbnl is also present we can emulate frexpl.
1132 d_index (d_strchr.U):
1133 This variable conditionally defines HAS_INDEX if index() and
1134 rindex() are available for string searching.
1136 d_inetaton (d_inetaton.U):
1137 This variable conditionally defines the HAS_INET_ATON symbol, which
1138 indicates to the C program that the inet_aton() function is available
1139 to parse IP address "dotted-quad" strings.
1141 d_int64_t (d_int64_t.U):
1142 This symbol will be defined if the C compiler supports int64_t.
1144 d_isascii (d_isascii.U):
1145 This variable conditionally defines the HAS_ISASCII constant,
1146 which indicates to the C program that isascii() is available.
1148 d_isfinite (d_isfinite.U):
1149 This variable conditionally defines the HAS_ISFINITE symbol, which
1150 indicates to the C program that the isfinite() routine is available.
1152 d_isinf (d_isinf.U):
1153 This variable conditionally defines the HAS_ISINF symbol, which
1154 indicates to the C program that the isinf() routine is available.
1156 d_isnan (d_isnan.U):
1157 This variable conditionally defines the HAS_ISNAN symbol, which
1158 indicates to the C program that the isnan() routine is available.
1160 d_isnanl (d_isnanl.U):
1161 This variable conditionally defines the HAS_ISNANL symbol, which
1162 indicates to the C program that the isnanl() routine is available.
1164 d_killpg (d_killpg.U):
1165 This variable conditionally defines the HAS_KILLPG symbol, which
1166 indicates to the C program that the killpg() routine is available
1167 to kill process groups.
1169 d_lchown (d_lchown.U):
1170 This variable conditionally defines the HAS_LCHOWN symbol, which
1171 indicates to the C program that the lchown() routine is available
1172 to operate on a symbolic link (instead of following the link).
1174 d_ldbl_dig (d_ldbl_dig.U):
1175 This variable conditionally defines d_ldbl_dig if this system's
1176 header files provide LDBL_DIG, which is the number of significant
1177 digits in a long double precision number.
1180 This variable conditionally defines HAS_LINK if link() is
1181 available to create hard links.
1183 d_localtime_r (d_localtime_r.U):
1184 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1185 which indicates to the C program that the localtime_r()
1186 routine is available.
1188 d_locconv (d_locconv.U):
1189 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1190 available for numeric and monetary formatting conventions.
1192 d_lockf (d_lockf.U):
1193 This variable conditionally defines HAS_LOCKF if lockf() is
1194 available to do file locking.
1196 d_longdbl (d_longdbl.U):
1197 This variable conditionally defines HAS_LONG_DOUBLE if
1198 the long double type is supported.
1200 d_longlong (d_longlong.U):
1201 This variable conditionally defines HAS_LONG_LONG if
1202 the long long type is supported.
1204 d_lseekproto (d_lseekproto.U):
1205 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1206 which indicates to the C program that the system provides
1207 a prototype for the lseek() function. Otherwise, it is
1208 up to the program to supply one.
1210 d_lstat (d_lstat.U):
1211 This variable conditionally defines HAS_LSTAT if lstat() is
1212 available to do file stats on symbolic links.
1214 d_madvise (d_madvise.U):
1215 This variable conditionally defines HAS_MADVISE if madvise() is
1216 available to map a file into memory.
1218 d_malloc_size (d_malloc_size.U):
1219 This symbol, if defined, indicates that the malloc_size
1220 routine is available for use.
1222 d_malloc_good_size (d_malloc_good_size.U):
1223 This symbol, if defined, indicates that the malloc_good_size
1224 routine is available for use.
1226 d_mblen (d_mblen.U):
1227 This variable conditionally defines the HAS_MBLEN symbol, which
1228 indicates to the C program that the mblen() routine is available
1229 to find the number of bytes in a multibye character.
1231 d_mbstowcs (d_mbstowcs.U):
1232 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1233 indicates to the C program that the mbstowcs() routine is available
1234 to convert a multibyte string into a wide character string.
1236 d_mbtowc (d_mbtowc.U):
1237 This variable conditionally defines the HAS_MBTOWC symbol, which
1238 indicates to the C program that the mbtowc() routine is available
1239 to convert multibyte to a wide character.
1241 d_memchr (d_memchr.U):
1242 This variable conditionally defines the HAS_MEMCHR symbol, which
1243 indicates to the C program that the memchr() routine is available
1244 to locate characters within a C string.
1246 d_memcmp (d_memcmp.U):
1247 This variable conditionally defines the HAS_MEMCMP symbol, which
1248 indicates to the C program that the memcmp() routine is available
1249 to compare blocks of memory.
1251 d_memcpy (d_memcpy.U):
1252 This variable conditionally defines the HAS_MEMCPY symbol, which
1253 indicates to the C program that the memcpy() routine is available
1254 to copy blocks of memory.
1256 d_memmove (d_memmove.U):
1257 This variable conditionally defines the HAS_MEMMOVE symbol, which
1258 indicates to the C program that the memmove() routine is available
1259 to copy potentatially overlapping blocks of memory.
1261 d_memset (d_memset.U):
1262 This variable conditionally defines the HAS_MEMSET symbol, which
1263 indicates to the C program that the memset() routine is available
1264 to set blocks of memory.
1266 d_mkdir (d_mkdir.U):
1267 This variable conditionally defines the HAS_MKDIR symbol, which
1268 indicates to the C program that the mkdir() routine is available
1269 to create directories..
1271 d_mkdtemp (d_mkdtemp.U):
1272 This variable conditionally defines the HAS_MKDTEMP symbol, which
1273 indicates to the C program that the mkdtemp() routine is available
1274 to exclusively create a uniquely named temporary directory.
1276 d_mkfifo (d_mkfifo.U):
1277 This variable conditionally defines the HAS_MKFIFO symbol, which
1278 indicates to the C program that the mkfifo() routine is available.
1280 d_mkstemp (d_mkstemp.U):
1281 This variable conditionally defines the HAS_MKSTEMP symbol, which
1282 indicates to the C program that the mkstemp() routine is available
1283 to exclusively create and open a uniquely named temporary file.
1285 d_mkstemps (d_mkstemps.U):
1286 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1287 indicates to the C program that the mkstemps() routine is available
1288 to exclusively create and open a uniquely named (with a suffix)
1291 d_mktime (d_mktime.U):
1292 This variable conditionally defines the HAS_MKTIME symbol, which
1293 indicates to the C program that the mktime() routine is available.
1296 This variable conditionally defines HAS_MMAP if mmap() is
1297 available to map a file into memory.
1299 d_modfl (d_modfl.U):
1300 This variable conditionally defines the HAS_MODFL symbol, which
1301 indicates to the C program that the modfl() routine is available.
1303 d_modfl_pow32_bug (d_modfl.U):
1304 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1305 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1306 For example from 4294967303.150000 one would get 4294967302.000000
1307 and 1.150000. The bug has been seen in certain versions of glibc,
1308 release 2.2.2 is known to be okay.
1310 d_modflproto (d_modfl.U):
1311 This symbol, if defined, indicates that the system provides
1312 a prototype for the modfl() function. Otherwise, it is up
1313 to the program to supply one. C99 says it should be
1314 long double modfl(long double, long double *);
1316 d_mprotect (d_mprotect.U):
1317 This variable conditionally defines HAS_MPROTECT if mprotect() is
1318 available to modify the access protection of a memory mapped file.
1321 This variable conditionally defines the HAS_MSG symbol, which
1322 indicates that the entire msg*(2) library is present.
1324 d_msg_ctrunc (d_socket.U):
1325 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1326 which indicates that the MSG_CTRUNC is available. #ifdef is
1327 not enough because it may be an enum, glibc has been known to do this.
1329 d_msg_dontroute (d_socket.U):
1330 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1331 which indicates that the MSG_DONTROUTE is available. #ifdef is
1332 not enough because it may be an enum, glibc has been known to do this.
1334 d_msg_oob (d_socket.U):
1335 This variable conditionally defines the HAS_MSG_OOB symbol,
1336 which indicates that the MSG_OOB is available. #ifdef is
1337 not enough because it may be an enum, glibc has been known to do this.
1339 d_msg_peek (d_socket.U):
1340 This variable conditionally defines the HAS_MSG_PEEK symbol,
1341 which indicates that the MSG_PEEK is available. #ifdef is
1342 not enough because it may be an enum, glibc has been known to do this.
1344 d_msg_proxy (d_socket.U):
1345 This variable conditionally defines the HAS_MSG_PROXY symbol,
1346 which indicates that the MSG_PROXY is available. #ifdef is
1347 not enough because it may be an enum, glibc has been known to do this.
1349 d_msgctl (d_msgctl.U):
1350 This variable conditionally defines the HAS_MSGCTL symbol, which
1351 indicates to the C program that the msgctl() routine is available.
1353 d_msgget (d_msgget.U):
1354 This variable conditionally defines the HAS_MSGGET symbol, which
1355 indicates to the C program that the msgget() routine is available.
1357 d_msghdr_s (d_msghdr_s.U):
1358 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1359 which indicates that the struct msghdr is supported.
1361 d_msgrcv (d_msgrcv.U):
1362 This variable conditionally defines the HAS_MSGRCV symbol, which
1363 indicates to the C program that the msgrcv() routine is available.
1365 d_msgsnd (d_msgsnd.U):
1366 This variable conditionally defines the HAS_MSGSND symbol, which
1367 indicates to the C program that the msgsnd() routine is available.
1369 d_msync (d_msync.U):
1370 This variable conditionally defines HAS_MSYNC if msync() is
1371 available to synchronize a mapped file.
1373 d_munmap (d_munmap.U):
1374 This variable conditionally defines HAS_MUNMAP if munmap() is
1375 available to unmap a region mapped by mmap().
1377 d_mymalloc (mallocsrc.U):
1378 This variable conditionally defines MYMALLOC in case other parts
1379 of the source want to take special action if MYMALLOC is used.
1380 This may include different sorts of profiling or error detection.
1383 This variable conditionally defines the HAS_NICE symbol, which
1384 indicates to the C program that the nice() routine is available.
1386 d_nl_langinfo (d_nl_langinfo.U):
1387 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1388 indicates to the C program that the nl_langinfo() routine is available.
1390 d_nv_preserves_uv (perlxv.U):
1391 This variable indicates whether a variable of type nvtype
1392 can preserve all the bits a variable of type uvtype.
1394 d_nv_zero_is_allbits_zero (perlxv.U):
1395 This variable indicates whether a variable of type nvtype
1396 stores 0.0 in memory as all bits zero.
1398 d_off64_t (d_off64_t.U):
1399 This symbol will be defined if the C compiler supports off64_t.
1401 d_old_pthread_create_joinable (d_pthrattrj.U):
1402 This variable conditionally defines pthread_create_joinable.
1403 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1405 d_oldpthreads (usethreads.U):
1406 This variable conditionally defines the OLD_PTHREADS_API symbol,
1407 and indicates that Perl should be built to use the old
1408 draft POSIX threads API. This is only potentially meaningful if
1411 d_oldsock (d_socket.U):
1412 This variable conditionally defines the OLDSOCKET symbol, which
1413 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1415 d_open3 (d_open3.U):
1416 This variable conditionally defines the HAS_OPEN3 manifest constant,
1417 which indicates to the C program that the 3 argument version of
1418 the open(2) function is available.
1420 d_pathconf (d_pathconf.U):
1421 This variable conditionally defines the HAS_PATHCONF symbol, which
1422 indicates to the C program that the pathconf() routine is available
1423 to determine file-system related limits and options associated
1424 with a given filename.
1426 d_pause (d_pause.U):
1427 This variable conditionally defines the HAS_PAUSE symbol, which
1428 indicates to the C program that the pause() routine is available
1429 to suspend a process until a signal is received.
1431 d_perl_otherlibdirs (otherlibdirs.U):
1432 This variable conditionally defines PERL_OTHERLIBDIRS, which
1433 contains a colon-separated set of paths for the perl binary to
1434 include in @INC. See also otherlibdirs.
1436 d_phostname (d_gethname.U):
1437 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1438 contains the shell command which, when fed to popen(), may be
1439 used to derive the host name.
1442 This variable conditionally defines the HAS_PIPE symbol, which
1443 indicates to the C program that the pipe() routine is available
1444 to create an inter-process channel.
1447 This variable conditionally defines the HAS_POLL symbol, which
1448 indicates to the C program that the poll() routine is available
1449 to poll active file descriptors.
1451 d_portable (d_portable.U):
1452 This variable conditionally defines the PORTABLE symbol, which
1453 indicates to the C program that it should not assume that it is
1454 running on the machine it was compiled on.
1456 d_PRId64 (quadfio.U):
1457 This variable conditionally defines the PERL_PRId64 symbol, which
1458 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1460 d_PRIeldbl (longdblfio.U):
1461 This variable conditionally defines the PERL_PRIfldbl symbol, which
1462 indiciates that stdio has a symbol to print long doubles.
1464 d_PRIEUldbl (longdblfio.U):
1465 This variable conditionally defines the PERL_PRIfldbl symbol, which
1466 indiciates that stdio has a symbol to print long doubles.
1467 The 'U' in the name is to separate this from d_PRIeldbl so that even
1468 case-blind systems can see the difference.
1470 d_PRIfldbl (longdblfio.U):
1471 This variable conditionally defines the PERL_PRIfldbl symbol, which
1472 indiciates that stdio has a symbol to print long doubles.
1474 d_PRIFUldbl (longdblfio.U):
1475 This variable conditionally defines the PERL_PRIfldbl symbol, which
1476 indiciates that stdio has a symbol to print long doubles.
1477 The 'U' in the name is to separate this from d_PRIfldbl so that even
1478 case-blind systems can see the difference.
1480 d_PRIgldbl (longdblfio.U):
1481 This variable conditionally defines the PERL_PRIfldbl symbol, which
1482 indiciates that stdio has a symbol to print long doubles.
1484 d_PRIGUldbl (longdblfio.U):
1485 This variable conditionally defines the PERL_PRIfldbl symbol, which
1486 indiciates that stdio has a symbol to print long doubles.
1487 The 'U' in the name is to separate this from d_PRIgldbl so that even
1488 case-blind systems can see the difference.
1490 d_PRIi64 (quadfio.U):
1491 This variable conditionally defines the PERL_PRIi64 symbol, which
1492 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1494 d_PRIo64 (quadfio.U):
1495 This variable conditionally defines the PERL_PRIo64 symbol, which
1496 indiciates that stdio has a symbol to print 64-bit octal numbers.
1498 d_PRIu64 (quadfio.U):
1499 This variable conditionally defines the PERL_PRIu64 symbol, which
1500 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1503 d_PRIx64 (quadfio.U):
1504 This variable conditionally defines the PERL_PRIx64 symbol, which
1505 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1507 d_PRIXU64 (quadfio.U):
1508 This variable conditionally defines the PERL_PRIXU64 symbol, which
1509 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1510 The 'U' in the name is to separate this from d_PRIx64 so that even
1511 case-blind systems can see the difference.
1513 d_procselfexe (d_procselfexe.U):
1514 Defined if $procselfexe is symlink to the absolute
1515 pathname of the executing program.
1517 d_pthread_atfork (d_pthread_atfork.U):
1518 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1519 which indicates to the C program that the pthread_atfork()
1520 routine is available.
1522 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1523 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1524 pthread_attr_setscope() is available to set the contention scope
1525 attribute of a thread attribute object.
1527 d_pthread_yield (d_pthread_y.U):
1528 This variable conditionally defines the HAS_PTHREAD_YIELD
1529 symbol if the pthread_yield routine is available to yield
1530 the execution of the current thread.
1533 This variable conditionally defines PWAGE, which indicates
1534 that struct passwd contains pw_age.
1536 d_pwchange (i_pwd.U):
1537 This variable conditionally defines PWCHANGE, which indicates
1538 that struct passwd contains pw_change.
1540 d_pwclass (i_pwd.U):
1541 This variable conditionally defines PWCLASS, which indicates
1542 that struct passwd contains pw_class.
1544 d_pwcomment (i_pwd.U):
1545 This variable conditionally defines PWCOMMENT, which indicates
1546 that struct passwd contains pw_comment.
1548 d_pwexpire (i_pwd.U):
1549 This variable conditionally defines PWEXPIRE, which indicates
1550 that struct passwd contains pw_expire.
1552 d_pwgecos (i_pwd.U):
1553 This variable conditionally defines PWGECOS, which indicates
1554 that struct passwd contains pw_gecos.
1556 d_pwpasswd (i_pwd.U):
1557 This variable conditionally defines PWPASSWD, which indicates
1558 that struct passwd contains pw_passwd.
1560 d_pwquota (i_pwd.U):
1561 This variable conditionally defines PWQUOTA, which indicates
1562 that struct passwd contains pw_quota.
1564 d_qgcvt (d_qgcvt.U):
1565 This variable conditionally defines the HAS_QGCVT symbol, which
1566 indicates to the C program that the qgcvt() routine is available.
1568 d_quad (quadtype.U):
1569 This variable, if defined, tells that there's a 64-bit integer type,
1572 d_random_r (d_random_r.U):
1573 This variable conditionally defines the HAS_RANDOM_R symbol,
1574 which indicates to the C program that the random_r()
1575 routine is available.
1577 d_readdir64_r (d_readdir64_r.U):
1578 This variable conditionally defines the HAS_READDIR64_R symbol,
1579 which indicates to the C program that the readdir64_r()
1580 routine is available.
1582 d_readdir (d_readdir.U):
1583 This variable conditionally defines HAS_READDIR if readdir() is
1584 available to read directory entries.
1586 d_readdir_r (d_readdir_r.U):
1587 This variable conditionally defines the HAS_READDIR_R symbol,
1588 which indicates to the C program that the readdir_r()
1589 routine is available.
1591 d_readlink (d_readlink.U):
1592 This variable conditionally defines the HAS_READLINK symbol, which
1593 indicates to the C program that the readlink() routine is available
1594 to read the value of a symbolic link.
1596 d_readv (d_readv.U):
1597 This variable conditionally defines the HAS_READV symbol, which
1598 indicates to the C program that the readv() routine is available.
1600 d_recvmsg (d_recvmsg.U):
1601 This variable conditionally defines the HAS_RECVMSG symbol, which
1602 indicates to the C program that the recvmsg() routine is available.
1604 d_rename (d_rename.U):
1605 This variable conditionally defines the HAS_RENAME symbol, which
1606 indicates to the C program that the rename() routine is available
1609 d_rewinddir (d_readdir.U):
1610 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1613 d_rmdir (d_rmdir.U):
1614 This variable conditionally defines HAS_RMDIR if rmdir() is
1615 available to remove directories.
1617 d_safebcpy (d_safebcpy.U):
1618 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1619 the bcopy() routine can do overlapping copies. Normally, you
1620 should probably use memmove().
1622 d_safemcpy (d_safemcpy.U):
1623 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1624 the memcpy() routine can do overlapping copies.
1625 For overlapping copies, memmove() should be used, if available.
1627 d_sanemcmp (d_sanemcmp.U):
1628 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1629 the memcpy() routine is available and can be used to compare relative
1630 magnitudes of chars with their high bits set.
1632 d_sbrkproto (d_sbrkproto.U):
1633 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1634 which indicates to the C program that the system provides
1635 a prototype for the sbrk() function. Otherwise, it is
1636 up to the program to supply one.
1638 d_scalbnl (d_scalbnl.U):
1639 This variable conditionally defines the HAS_SCALBNL symbol, which
1640 indicates to the C program that the scalbnl() routine is available.
1641 If ilogbl is also present we can emulate frexpl.
1643 d_sched_yield (d_pthread_y.U):
1644 This variable conditionally defines the HAS_SCHED_YIELD
1645 symbol if the sched_yield routine is available to yield
1646 the execution of the current thread.
1648 d_scm_rights (d_socket.U):
1649 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1650 which indicates that the SCM_RIGHTS is available. #ifdef is
1651 not enough because it may be an enum, glibc has been known to do this.
1653 d_SCNfldbl (longdblfio.U):
1654 This variable conditionally defines the PERL_PRIfldbl symbol, which
1655 indiciates that stdio has a symbol to scan long doubles.
1657 d_seekdir (d_readdir.U):
1658 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1661 d_select (d_select.U):
1662 This variable conditionally defines HAS_SELECT if select() is
1663 available to select active file descriptors. A <sys/time.h>
1664 inclusion may be necessary for the timeout field.
1667 This variable conditionally defines the HAS_SEM symbol, which
1668 indicates that the entire sem*(2) library is present.
1670 d_semctl (d_semctl.U):
1671 This variable conditionally defines the HAS_SEMCTL symbol, which
1672 indicates to the C program that the semctl() routine is available.
1674 d_semctl_semid_ds (d_union_semun.U):
1675 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1676 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1678 d_semctl_semun (d_union_semun.U):
1679 This variable conditionally defines USE_SEMCTL_SEMUN, which
1680 indicates that union semun is to be used for semctl IPC_STAT.
1682 d_semget (d_semget.U):
1683 This variable conditionally defines the HAS_SEMGET symbol, which
1684 indicates to the C program that the semget() routine is available.
1686 d_semop (d_semop.U):
1687 This variable conditionally defines the HAS_SEMOP symbol, which
1688 indicates to the C program that the semop() routine is available.
1690 d_sendmsg (d_sendmsg.U):
1691 This variable conditionally defines the HAS_SENDMSG symbol, which
1692 indicates to the C program that the sendmsg() routine is available.
1694 d_setegid (d_setegid.U):
1695 This variable conditionally defines the HAS_SETEGID symbol, which
1696 indicates to the C program that the setegid() routine is available
1697 to change the effective gid of the current program.
1699 d_seteuid (d_seteuid.U):
1700 This variable conditionally defines the HAS_SETEUID symbol, which
1701 indicates to the C program that the seteuid() routine is available
1702 to change the effective uid of the current program.
1704 d_setgrent (d_setgrent.U):
1705 This variable conditionally defines the HAS_SETGRENT symbol, which
1706 indicates to the C program that the setgrent() routine is available
1707 for initializing sequential access to the group database.
1709 d_setgrent_r (d_setgrent_r.U):
1710 This variable conditionally defines the HAS_SETGRENT_R symbol,
1711 which indicates to the C program that the setgrent_r()
1712 routine is available.
1714 d_setgrps (d_setgrps.U):
1715 This variable conditionally defines the HAS_SETGROUPS symbol, which
1716 indicates to the C program that the setgroups() routine is available
1717 to set the list of process groups.
1719 d_sethent (d_sethent.U):
1720 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1723 d_sethostent_r (d_sethostent_r.U):
1724 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1725 which indicates to the C program that the sethostent_r()
1726 routine is available.
1728 d_setitimer (d_setitimer.U):
1729 This variable conditionally defines the HAS_SETITIMER symbol, which
1730 indicates to the C program that the setitimer() routine is available.
1732 d_setlinebuf (d_setlnbuf.U):
1733 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1734 indicates to the C program that the setlinebuf() routine is available
1735 to change stderr or stdout from block-buffered or unbuffered to a
1738 d_setlocale (d_setlocale.U):
1739 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1740 available to handle locale-specific ctype implementations.
1742 d_setlocale_r (d_setlocale_r.U):
1743 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1744 which indicates to the C program that the setlocale_r()
1745 routine is available.
1747 d_setnent (d_setnent.U):
1748 This variable conditionally defines HAS_SETNETENT if setnetent() is
1751 d_setnetent_r (d_setnetent_r.U):
1752 This variable conditionally defines the HAS_SETNETENT_R symbol,
1753 which indicates to the C program that the setnetent_r()
1754 routine is available.
1756 d_setpent (d_setpent.U):
1757 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1760 d_setpgid (d_setpgid.U):
1761 This variable conditionally defines the HAS_SETPGID symbol if the
1762 setpgid(pid, gpid) function is available to set process group ID.
1764 d_setpgrp2 (d_setpgrp2.U):
1765 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1766 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1767 is available to set the current process group.
1769 d_setpgrp (d_setpgrp.U):
1770 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1771 available to set the current process group.
1773 d_setprior (d_setprior.U):
1774 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1775 is available to set a process's priority.
1777 d_setproctitle (d_setproctitle.U):
1778 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1779 which indicates to the C program that the setproctitle() routine
1782 d_setprotoent_r (d_setprotoent_r.U):
1783 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1784 which indicates to the C program that the setprotoent_r()
1785 routine is available.
1787 d_setpwent (d_setpwent.U):
1788 This variable conditionally defines the HAS_SETPWENT symbol, which
1789 indicates to the C program that the setpwent() routine is available
1790 for initializing sequential access to the passwd database.
1792 d_setpwent_r (d_setpwent_r.U):
1793 This variable conditionally defines the HAS_SETPWENT_R symbol,
1794 which indicates to the C program that the setpwent_r()
1795 routine is available.
1797 d_setregid (d_setregid.U):
1798 This variable conditionally defines HAS_SETREGID if setregid() is
1799 available to change the real and effective gid of the current
1802 d_setresgid (d_setregid.U):
1803 This variable conditionally defines HAS_SETRESGID if setresgid() is
1804 available to change the real, effective and saved gid of the current
1807 d_setresuid (d_setreuid.U):
1808 This variable conditionally defines HAS_SETREUID if setresuid() is
1809 available to change the real, effective and saved uid of the current
1812 d_setreuid (d_setreuid.U):
1813 This variable conditionally defines HAS_SETREUID if setreuid() is
1814 available to change the real and effective uid of the current
1817 d_setrgid (d_setrgid.U):
1818 This variable conditionally defines the HAS_SETRGID symbol, which
1819 indicates to the C program that the setrgid() routine is available
1820 to change the real gid of the current program.
1822 d_setruid (d_setruid.U):
1823 This variable conditionally defines the HAS_SETRUID symbol, which
1824 indicates to the C program that the setruid() routine is available
1825 to change the real uid of the current program.
1827 d_setsent (d_setsent.U):
1828 This variable conditionally defines HAS_SETSERVENT if setservent() is
1831 d_setservent_r (d_setservent_r.U):
1832 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1833 which indicates to the C program that the setservent_r()
1834 routine is available.
1836 d_setsid (d_setsid.U):
1837 This variable conditionally defines HAS_SETSID if setsid() is
1838 available to set the process group ID.
1840 d_setvbuf (d_setvbuf.U):
1841 This variable conditionally defines the HAS_SETVBUF symbol, which
1842 indicates to the C program that the setvbuf() routine is available
1843 to change buffering on an open stdio stream.
1846 This variable conditionally defines the USE_SFIO symbol,
1847 and indicates whether sfio is available (and should be used).
1850 This variable conditionally defines the HAS_SHM symbol, which
1851 indicates that the entire shm*(2) library is present.
1853 d_shmat (d_shmat.U):
1854 This variable conditionally defines the HAS_SHMAT symbol, which
1855 indicates to the C program that the shmat() routine is available.
1857 d_shmatprototype (d_shmat.U):
1858 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1859 symbol, which indicates that sys/shm.h has a prototype for
1862 d_shmctl (d_shmctl.U):
1863 This variable conditionally defines the HAS_SHMCTL symbol, which
1864 indicates to the C program that the shmctl() routine is available.
1866 d_shmdt (d_shmdt.U):
1867 This variable conditionally defines the HAS_SHMDT symbol, which
1868 indicates to the C program that the shmdt() routine is available.
1870 d_shmget (d_shmget.U):
1871 This variable conditionally defines the HAS_SHMGET symbol, which
1872 indicates to the C program that the shmget() routine is available.
1874 d_sigaction (d_sigaction.U):
1875 This variable conditionally defines the HAS_SIGACTION symbol, which
1876 indicates that the Vr4 sigaction() routine is available.
1878 d_sigprocmask (d_sigprocmask.U):
1879 This variable conditionally defines HAS_SIGPROCMASK
1880 if sigprocmask() is available to examine or change the signal mask
1881 of the calling process.
1883 d_sigsetjmp (d_sigsetjmp.U):
1884 This variable conditionally defines the HAS_SIGSETJMP symbol,
1885 which indicates that the sigsetjmp() routine is available to
1886 call setjmp() and optionally save the process's signal mask.
1888 d_sockatmark (d_sockatmark.U):
1889 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1890 indicates to the C program that the sockatmark() routine is available.
1892 d_sockatmarkproto (d_sockatmarkproto.U):
1893 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1894 which indicates to the C program that the system provides
1895 a prototype for the sockatmark() function. Otherwise, it is
1896 up to the program to supply one.
1898 d_socket (d_socket.U):
1899 This variable conditionally defines HAS_SOCKET, which indicates
1900 that the BSD socket interface is supported.
1902 d_socklen_t (d_socklen_t.U):
1903 This symbol will be defined if the C compiler supports socklen_t.
1905 d_sockpair (d_socket.U):
1906 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1907 indicates that the BSD socketpair() is supported.
1909 d_socks5_init (d_socks5_init.U):
1910 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1911 indicates to the C program that the socks5_init() routine is available.
1913 d_sqrtl (d_sqrtl.U):
1914 This variable conditionally defines the HAS_SQRTL symbol, which
1915 indicates to the C program that the sqrtl() routine is available.
1917 d_srand48_r (d_srand48_r.U):
1918 This variable conditionally defines the HAS_SRAND48_R symbol,
1919 which indicates to the C program that the srand48_r()
1920 routine is available.
1922 d_srandom_r (d_srandom_r.U):
1923 This variable conditionally defines the HAS_SRANDOM_R symbol,
1924 which indicates to the C program that the srandom_r()
1925 routine is available.
1927 d_sresgproto (d_sresgproto.U):
1928 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1929 which indicates to the C program that the system provides
1930 a prototype for the setresgid() function. Otherwise, it is
1931 up to the program to supply one.
1933 d_sresuproto (d_sresuproto.U):
1934 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1935 which indicates to the C program that the system provides
1936 a prototype for the setresuid() function. Otherwise, it is
1937 up to the program to supply one.
1939 d_statblks (d_statblks.U):
1940 This variable conditionally defines USE_STAT_BLOCKS
1941 if this system has a stat structure declaring
1942 st_blksize and st_blocks.
1944 d_statfs_f_flags (d_statfs_f_flags.U):
1945 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1946 symbol, which indicates to struct statfs from has f_flags member.
1947 This kind of struct statfs is coming from sys/mount.h (BSD),
1948 not from sys/statfs.h (SYSV).
1950 d_statfs_s (d_statfs_s.U):
1951 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1952 which indicates that the struct statfs is supported.
1954 d_statvfs (d_statvfs.U):
1955 This variable conditionally defines the HAS_STATVFS symbol, which
1956 indicates to the C program that the statvfs() routine is available.
1958 d_stdio_cnt_lval (d_stdstdio.U):
1959 This variable conditionally defines STDIO_CNT_LVALUE if the
1960 FILE_cnt macro can be used as an lvalue.
1962 d_stdio_ptr_lval (d_stdstdio.U):
1963 This variable conditionally defines STDIO_PTR_LVALUE if the
1964 FILE_ptr macro can be used as an lvalue.
1966 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
1967 This symbol is defined if using the FILE_ptr macro as an lvalue
1968 to increase the pointer by n leaves File_cnt(fp) unchanged.
1970 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1971 This symbol is defined if using the FILE_ptr macro as an lvalue
1972 to increase the pointer by n has the side effect of decreasing the
1973 value of File_cnt(fp) by n.
1975 d_stdio_stream_array (stdio_streams.U):
1976 This variable tells whether there is an array holding
1979 d_stdiobase (d_stdstdio.U):
1980 This variable conditionally defines USE_STDIO_BASE if this system
1981 has a FILE structure declaring a usable _base field (or equivalent)
1984 d_stdstdio (d_stdstdio.U):
1985 This variable conditionally defines USE_STDIO_PTR if this system
1986 has a FILE structure declaring usable _ptr and _cnt fields (or
1987 equivalent) in stdio.h.
1989 d_strchr (d_strchr.U):
1990 This variable conditionally defines HAS_STRCHR if strchr() and
1991 strrchr() are available for string searching.
1993 d_strcoll (d_strcoll.U):
1994 This variable conditionally defines HAS_STRCOLL if strcoll() is
1995 available to compare strings using collating information.
1997 d_strctcpy (d_strctcpy.U):
1998 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1999 indicates to the C program that this C compiler knows how to copy
2002 d_strerrm (d_strerror.U):
2003 This variable holds what Strerrr is defined as to translate an error
2004 code condition into an error message string. It could be 'strerror'
2005 or a more complex macro emulating strrror with sys_errlist[], or the
2006 "unknown" string when both strerror and sys_errlist are missing.
2008 d_strerror (d_strerror.U):
2009 This variable conditionally defines HAS_STRERROR if strerror() is
2010 available to translate error numbers to strings.
2012 d_strerror_r (d_strerror_r.U):
2013 This variable conditionally defines the HAS_STRERROR_R symbol,
2014 which indicates to the C program that the strerror_r()
2015 routine is available.
2017 d_strftime (d_strftime.U):
2018 This variable conditionally defines the HAS_STRFTIME symbol, which
2019 indicates to the C program that the strftime() routine is available.
2021 d_strlcat (d_strlcat.U):
2022 This variable conditionally defines the HAS_STRLCAT symbol, which
2023 indicates to the C program that the strlcat () routine is available.
2025 d_strlcpy (d_strlcpy.U):
2026 This variable conditionally defines the HAS_STRLCPY symbol, which
2027 indicates to the C program that the strlcpy () routine is available.
2029 d_strtod (d_strtod.U):
2030 This variable conditionally defines the HAS_STRTOD symbol, which
2031 indicates to the C program that the strtod() routine is available
2032 to provide better numeric string conversion than atof().
2034 d_strtol (d_strtol.U):
2035 This variable conditionally defines the HAS_STRTOL symbol, which
2036 indicates to the C program that the strtol() routine is available
2037 to provide better numeric string conversion than atoi() and friends.
2039 d_strtold (d_strtold.U):
2040 This variable conditionally defines the HAS_STRTOLD symbol, which
2041 indicates to the C program that the strtold() routine is available.
2043 d_strtoll (d_strtoll.U):
2044 This variable conditionally defines the HAS_STRTOLL symbol, which
2045 indicates to the C program that the strtoll() routine is available.
2047 d_strtoq (d_strtoq.U):
2048 This variable conditionally defines the HAS_STRTOQ symbol, which
2049 indicates to the C program that the strtoq() routine is available.
2051 d_strtoul (d_strtoul.U):
2052 This variable conditionally defines the HAS_STRTOUL symbol, which
2053 indicates to the C program that the strtoul() routine is available
2054 to provide conversion of strings to unsigned long.
2056 d_strtoull (d_strtoull.U):
2057 This variable conditionally defines the HAS_STRTOULL symbol, which
2058 indicates to the C program that the strtoull() routine is available.
2060 d_strtouq (d_strtouq.U):
2061 This variable conditionally defines the HAS_STRTOUQ symbol, which
2062 indicates to the C program that the strtouq() routine is available.
2064 d_strxfrm (d_strxfrm.U):
2065 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2066 available to transform strings.
2068 d_suidsafe (d_dosuid.U):
2069 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2070 if setuid scripts can be secure. This test looks in /dev/fd/.
2072 d_symlink (d_symlink.U):
2073 This variable conditionally defines the HAS_SYMLINK symbol, which
2074 indicates to the C program that the symlink() routine is available
2075 to create symbolic links.
2077 d_syscall (d_syscall.U):
2078 This variable conditionally defines HAS_SYSCALL if syscall() is
2079 available call arbitrary system calls.
2081 d_syscallproto (d_syscallproto.U):
2082 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2083 which indicates to the C program that the system provides
2084 a prototype for the syscall() function. Otherwise, it is
2085 up to the program to supply one.
2087 d_sysconf (d_sysconf.U):
2088 This variable conditionally defines the HAS_SYSCONF symbol, which
2089 indicates to the C program that the sysconf() routine is available
2090 to determine system related limits and options.
2092 d_sysernlst (d_strerror.U):
2093 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2094 is available to translate error numbers to the symbolic name.
2096 d_syserrlst (d_strerror.U):
2097 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2098 available to translate error numbers to strings.
2100 d_system (d_system.U):
2101 This variable conditionally defines HAS_SYSTEM if system() is
2102 available to issue a shell command.
2104 d_tcgetpgrp (d_tcgtpgrp.U):
2105 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2106 indicates to the C program that the tcgetpgrp() routine is available.
2107 to get foreground process group ID.
2109 d_tcsetpgrp (d_tcstpgrp.U):
2110 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2111 indicates to the C program that the tcsetpgrp() routine is available
2112 to set foreground process group ID.
2114 d_telldir (d_readdir.U):
2115 This variable conditionally defines HAS_TELLDIR if telldir() is
2118 d_telldirproto (d_telldirproto.U):
2119 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2120 which indicates to the C program that the system provides
2121 a prototype for the telldir() function. Otherwise, it is
2122 up to the program to supply one.
2125 This variable conditionally defines the HAS_TIME symbol, which indicates
2126 that the time() routine exists. The time() routine is normaly
2127 provided on UNIX systems.
2129 d_times (d_times.U):
2130 This variable conditionally defines the HAS_TIMES symbol, which indicates
2131 that the times() routine exists. The times() routine is normaly
2132 provided on UNIX systems. You may have to include <sys/times.h>.
2134 d_tm_tm_gmtoff (i_time.U):
2135 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2136 indicates to the C program that the struct tm has the tm_gmtoff field.
2138 d_tm_tm_zone (i_time.U):
2139 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2140 indicates to the C program that the struct tm has the tm_zone field.
2142 d_tmpnam_r (d_tmpnam_r.U):
2143 This variable conditionally defines the HAS_TMPNAM_R symbol,
2144 which indicates to the C program that the tmpnam_r()
2145 routine is available.
2147 d_truncate (d_truncate.U):
2148 This variable conditionally defines HAS_TRUNCATE if truncate() is
2149 available to truncate files.
2151 d_ttyname_r (d_ttyname_r.U):
2152 This variable conditionally defines the HAS_TTYNAME_R symbol,
2153 which indicates to the C program that the ttyname_r()
2154 routine is available.
2156 d_tzname (d_tzname.U):
2157 This variable conditionally defines HAS_TZNAME if tzname[] is
2158 available to access timezone names.
2160 d_u32align (d_u32align.U):
2161 This variable tells whether you must access character data
2162 through U32-aligned pointers.
2164 d_ualarm (d_ualarm.U):
2165 This variable conditionally defines the HAS_UALARM symbol, which
2166 indicates to the C program that the ualarm() routine is available.
2168 d_umask (d_umask.U):
2169 This variable conditionally defines the HAS_UMASK symbol, which
2170 indicates to the C program that the umask() routine is available.
2171 to set and get the value of the file creation mask.
2173 d_uname (d_gethname.U):
2174 This variable conditionally defines the HAS_UNAME symbol, which
2175 indicates to the C program that the uname() routine may be
2176 used to derive the host name.
2178 d_union_semun (d_union_semun.U):
2179 This variable conditionally defines HAS_UNION_SEMUN if the
2180 union semun is defined by including <sys/sem.h>.
2182 d_unordered (d_unordered.U):
2183 This variable conditionally defines the HAS_UNORDERED symbol, which
2184 indicates to the C program that the unordered() routine is available.
2186 d_unsetenv (d_unsetenv.U):
2187 This variable conditionally defines the HAS_UNSETENV symbol, which
2188 indicates to the C program that the unsetenv () routine is available.
2190 d_usleep (d_usleep.U):
2191 This variable conditionally defines HAS_USLEEP if usleep() is
2192 available to do high granularity sleeps.
2194 d_usleepproto (d_usleepproto.U):
2195 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2196 which indicates to the C program that the system provides
2197 a prototype for the usleep() function. Otherwise, it is
2198 up to the program to supply one.
2200 d_ustat (d_ustat.U):
2201 This variable conditionally defines HAS_USTAT if ustat() is
2202 available to query file system statistics by dev_t.
2204 d_vendorarch (vendorarch.U):
2205 This variable conditionally defined PERL_VENDORARCH.
2207 d_vendorbin (vendorbin.U):
2208 This variable conditionally defines PERL_VENDORBIN.
2210 d_vendorlib (vendorlib.U):
2211 This variable conditionally defines PERL_VENDORLIB.
2213 d_vendorscript (vendorscript.U):
2214 This variable conditionally defines PERL_VENDORSCRIPT.
2216 d_vfork (d_vfork.U):
2217 This variable conditionally defines the HAS_VFORK symbol, which
2218 indicates the vfork() routine is available.
2220 d_void_closedir (d_closedir.U):
2221 This variable conditionally defines VOID_CLOSEDIR if closedir()
2222 does not return a value.
2224 d_voidsig (d_voidsig.U):
2225 This variable conditionally defines VOIDSIG if this system
2226 declares "void (*signal(...))()" in signal.h. The old way was to
2227 declare it as "int (*signal(...))()".
2229 d_voidtty (i_sysioctl.U):
2230 This variable conditionally defines USE_IOCNOTTY to indicate that the
2231 ioctl() call with TIOCNOTTY should be used to void tty association.
2232 Otherwise (on USG probably), it is enough to close the standard file
2233 decriptors and do a setpgrp().
2235 d_volatile (d_volatile.U):
2236 This variable conditionally defines the HASVOLATILE symbol, which
2237 indicates to the C program that this C compiler knows about the
2238 volatile declaration.
2240 d_vprintf (d_vprintf.U):
2241 This variable conditionally defines the HAS_VPRINTF symbol, which
2242 indicates to the C program that the vprintf() routine is available
2243 to printf with a pointer to an argument list.
2245 d_wait4 (d_wait4.U):
2246 This variable conditionally defines the HAS_WAIT4 symbol, which
2247 indicates the wait4() routine is available.
2249 d_waitpid (d_waitpid.U):
2250 This variable conditionally defines HAS_WAITPID if waitpid() is
2251 available to wait for child process.
2253 d_wcstombs (d_wcstombs.U):
2254 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2255 indicates to the C program that the wcstombs() routine is available
2256 to convert wide character strings to multibyte strings.
2258 d_wctomb (d_wctomb.U):
2259 This variable conditionally defines the HAS_WCTOMB symbol, which
2260 indicates to the C program that the wctomb() routine is available
2261 to convert a wide character to a multibyte.
2263 d_writev (d_writev.U):
2264 This variable conditionally defines the HAS_WRITEV symbol, which
2265 indicates to the C program that the writev() routine is available.
2268 This variable conditionally defines the symbol XENIX, which alerts
2269 the C program that it runs under Xenix.
2272 This variable is used internally by Configure to determine the
2273 full pathname (if any) of the date program. After Configure runs,
2274 the value is reset to a plain "date" and is not useful.
2276 db_hashtype (i_db.U):
2277 This variable contains the type of the hash structure element
2278 in the <db.h> header file. In older versions of DB, it was
2279 int, while in newer ones it is u_int32_t.
2281 db_prefixtype (i_db.U):
2282 This variable contains the type of the prefix structure element
2283 in the <db.h> header file. In older versions of DB, it was
2284 int, while in newer ones it is size_t.
2286 db_version_major (i_db.U):
2287 This variable contains the major version number of
2288 Berkeley DB found in the <db.h> header file.
2290 db_version_minor (i_db.U):
2291 This variable contains the minor version number of
2292 Berkeley DB found in the <db.h> header file.
2293 For DB version 1 this is always 0.
2295 db_version_patch (i_db.U):
2296 This variable contains the patch version number of
2297 Berkeley DB found in the <db.h> header file.
2298 For DB version 1 this is always 0.
2300 defvoidused (voidflags.U):
2301 This variable contains the default value of the VOIDUSED symbol (15).
2303 direntrytype (i_dirent.U):
2304 This symbol is set to 'struct direct' or 'struct dirent' depending on
2305 whether dirent is available or not. You should use this pseudo type to
2306 portably declare your directory entries.
2309 This variable contains the extension that is to be used for the
2310 dynamically loaded modules that perl generaties.
2313 This variable contains the name of the dynamic loading file that
2314 will be used with the package.
2316 doublesize (doublesize.U):
2317 This variable contains the value of the DOUBLESIZE symbol, which
2318 indicates to the C program how many bytes there are in a double.
2320 drand01 (randfunc.U):
2321 Indicates the macro to be used to generate normalized
2322 random numbers. Uses randfunc, often divided by
2323 (double) (((unsigned long) 1 << randbits)) in order to
2324 normalize the result.
2325 In C programs, the macro 'Drand01' is mapped to drand01.
2327 drand48_r_proto (d_drand48_r.U):
2328 This variable encodes the prototype of drand48_r.
2329 It is zero if d_drand48_r is undef, and one of the
2330 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2333 dynamic_ext (Extensions.U):
2334 This variable holds a list of XS extension files we want to
2335 link dynamically into the package. It is used by Makefile.
2337 eagain (nblock_io.U):
2338 This variable bears the symbolic errno code set by read() when no
2339 data is present on the file and non-blocking I/O was enabled (otherwise,
2340 read() blocks naturally).
2343 This variable conditionally defines EBCDIC if this
2344 system uses EBCDIC encoding. Among other things, this
2345 means that the character ranges are not contiguous.
2349 This variable is used internally by Configure to determine the
2350 full pathname (if any) of the echo program. After Configure runs,
2351 the value is reset to a plain "echo" and is not useful.
2354 This variable is used internally by Configure to determine the
2355 full pathname (if any) of the egrep program. After Configure runs,
2356 the value is reset to a plain "egrep" and is not useful.
2359 This variable is defined but not used by Configure.
2360 The value is a plain '' and is not useful.
2362 endgrent_r_proto (d_endgrent_r.U):
2363 This variable encodes the prototype of endgrent_r.
2364 It is zero if d_endgrent_r is undef, and one of the
2365 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2368 endhostent_r_proto (d_endhostent_r.U):
2369 This variable encodes the prototype of endhostent_r.
2370 It is zero if d_endhostent_r is undef, and one of the
2371 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2374 endnetent_r_proto (d_endnetent_r.U):
2375 This variable encodes the prototype of endnetent_r.
2376 It is zero if d_endnetent_r is undef, and one of the
2377 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2380 endprotoent_r_proto (d_endprotoent_r.U):
2381 This variable encodes the prototype of endprotoent_r.
2382 It is zero if d_endprotoent_r is undef, and one of the
2383 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2386 endpwent_r_proto (d_endpwent_r.U):
2387 This variable encodes the prototype of endpwent_r.
2388 It is zero if d_endpwent_r is undef, and one of the
2389 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2392 endservent_r_proto (d_endservent_r.U):
2393 This variable encodes the prototype of endservent_r.
2394 It is zero if d_endservent_r is undef, and one of the
2395 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2399 When running under Eunice this variable contains a command which will
2400 convert a shell script to the proper form of text file for it to be
2401 executable by the shell. On other systems it is a no-op.
2404 This is an old synonym for _exe.
2407 This variable is used internally by Configure to determine the
2408 full pathname (if any) of the expr program. After Configure runs,
2409 the value is reset to a plain "expr" and is not useful.
2411 extensions (Extensions.U):
2412 This variable holds a list of all extension files (both XS and
2413 non-xs linked into the package. It is propagated to Config.pm
2414 and is typically used to test whether a particular extesion
2418 This variable holds a list of extra modules to install.
2420 fflushall (fflushall.U):
2421 This symbol, if defined, tells that to flush
2422 all pending stdio output one must loop through all
2423 the stdio file handles stored in an array and fflush them.
2424 Note that if fflushNULL is defined, fflushall will not
2425 even be probed for and will be left undefined.
2427 fflushNULL (fflushall.U):
2428 This symbol, if defined, tells that fflush(NULL) does flush
2429 all pending stdio output.
2432 This variable is defined but not used by Configure.
2433 The value is a plain '' and is not useful.
2435 firstmakefile (Unix.U):
2436 This variable defines the first file searched by make. On unix,
2437 it is makefile (then Makefile). On case-insensitive systems,
2438 it might be something else. This is only used to deal with
2439 convoluted make depend tricks.
2442 This variable is defined but not used by Configure.
2443 The value is a plain '' and is not useful.
2445 fpossize (fpossize.U):
2446 This variable contains the size of a fpostype in bytes.
2448 fpostype (fpostype.U):
2449 This variable defines Fpos_t to be something like fpos_t, long,
2450 uint, or whatever type is used to declare file positions in libc.
2452 freetype (mallocsrc.U):
2453 This variable contains the return type of free(). It is usually
2454 void, but occasionally int.
2457 This variable contains the command used by Configure
2458 to copy files from the target host. Useful and available
2459 only during Perl build.
2460 The string ':' if not cross-compiling.
2463 This variable contains the full pathname to 'ar', whether or
2464 not the user has specified 'portability'. This is only used
2468 This variable contains the full pathname to 'csh', whether or
2469 not the user has specified 'portability'. This is only used
2470 in the compiled C program, and we assume that all systems which
2471 can share this executable will have the same full pathname to
2474 full_sed (Loc_sed.U):
2475 This variable contains the full pathname to 'sed', whether or
2476 not the user has specified 'portability'. This is only used
2477 in the compiled C program, and we assume that all systems which
2478 can share this executable will have the same full pathname to
2481 gccansipedantic (gccvers.U):
2482 If GNU cc (gcc) is used, this variable will enable (if set) the
2483 -ansi and -pedantic ccflags for building core files (through
2484 cflags script). (See Porting/pumpkin.pod for full description).
2486 gccosandvers (gccvers.U):
2487 If GNU cc (gcc) is used, this variable holds the operating system
2488 and version used to compile gcc. It is set to '' if not gcc,
2489 or if nothing useful can be parsed as the os version.
2491 gccversion (gccvers.U):
2492 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2493 indicate whether the compiler is version 1 or 2. This is used in
2494 setting some of the default cflags. It is set to '' if not gcc.
2496 getgrent_r_proto (d_getgrent_r.U):
2497 This variable encodes the prototype of getgrent_r.
2498 It is zero if d_getgrent_r is undef, and one of the
2499 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2502 getgrgid_r_proto (d_getgrgid_r.U):
2503 This variable encodes the prototype of getgrgid_r.
2504 It is zero if d_getgrgid_r is undef, and one of the
2505 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2508 getgrnam_r_proto (d_getgrnam_r.U):
2509 This variable encodes the prototype of getgrnam_r.
2510 It is zero if d_getgrnam_r is undef, and one of the
2511 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2514 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2515 This variable encodes the prototype of gethostbyaddr_r.
2516 It is zero if d_gethostbyaddr_r is undef, and one of the
2517 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2520 gethostbyname_r_proto (d_gethostbyname_r.U):
2521 This variable encodes the prototype of gethostbyname_r.
2522 It is zero if d_gethostbyname_r is undef, and one of the
2523 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2526 gethostent_r_proto (d_gethostent_r.U):
2527 This variable encodes the prototype of gethostent_r.
2528 It is zero if d_gethostent_r is undef, and one of the
2529 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2532 getlogin_r_proto (d_getlogin_r.U):
2533 This variable encodes the prototype of getlogin_r.
2534 It is zero if d_getlogin_r is undef, and one of the
2535 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2538 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2539 This variable encodes the prototype of getnetbyaddr_r.
2540 It is zero if d_getnetbyaddr_r is undef, and one of the
2541 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2544 getnetbyname_r_proto (d_getnetbyname_r.U):
2545 This variable encodes the prototype of getnetbyname_r.
2546 It is zero if d_getnetbyname_r is undef, and one of the
2547 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2550 getnetent_r_proto (d_getnetent_r.U):
2551 This variable encodes the prototype of getnetent_r.
2552 It is zero if d_getnetent_r is undef, and one of the
2553 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2556 getprotobyname_r_proto (d_getprotobyname_r.U):
2557 This variable encodes the prototype of getprotobyname_r.
2558 It is zero if d_getprotobyname_r is undef, and one of the
2559 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2562 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2563 This variable encodes the prototype of getprotobynumber_r.
2564 It is zero if d_getprotobynumber_r is undef, and one of the
2565 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2568 getprotoent_r_proto (d_getprotoent_r.U):
2569 This variable encodes the prototype of getprotoent_r.
2570 It is zero if d_getprotoent_r is undef, and one of the
2571 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2574 getpwent_r_proto (d_getpwent_r.U):
2575 This variable encodes the prototype of getpwent_r.
2576 It is zero if d_getpwent_r is undef, and one of the
2577 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2580 getpwnam_r_proto (d_getpwnam_r.U):
2581 This variable encodes the prototype of getpwnam_r.
2582 It is zero if d_getpwnam_r is undef, and one of the
2583 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2586 getpwuid_r_proto (d_getpwuid_r.U):
2587 This variable encodes the prototype of getpwuid_r.
2588 It is zero if d_getpwuid_r is undef, and one of the
2589 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2592 getservbyname_r_proto (d_getservbyname_r.U):
2593 This variable encodes the prototype of getservbyname_r.
2594 It is zero if d_getservbyname_r is undef, and one of the
2595 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2598 getservbyport_r_proto (d_getservbyport_r.U):
2599 This variable encodes the prototype of getservbyport_r.
2600 It is zero if d_getservbyport_r is undef, and one of the
2601 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2604 getservent_r_proto (d_getservent_r.U):
2605 This variable encodes the prototype of getservent_r.
2606 It is zero if d_getservent_r is undef, and one of the
2607 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2610 getspnam_r_proto (d_getspnam_r.U):
2611 This variable encodes the prototype of getspnam_r.
2612 It is zero if d_getspnam_r is undef, and one of the
2613 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2617 This variable contains the format string used for printing a Gid_t.
2619 gidsign (gidsign.U):
2620 This variable contains the signedness of a gidtype.
2621 1 for unsigned, -1 for signed.
2623 gidsize (gidsize.U):
2624 This variable contains the size of a gidtype in bytes.
2626 gidtype (gidtype.U):
2627 This variable defines Gid_t to be something like gid_t, int,
2628 ushort, or whatever type is used to declare the return type
2629 of getgid(). Typically, it is the type of group ids in the kernel.
2632 This variable holds the general path (space-separated) used to
2633 find libraries. It may contain directories that do not exist on
2634 this platform, libpth is the cleaned-up version.
2637 This variable is used internally by Configure to determine the
2638 full pathname (if any) of the gmake program. After Configure runs,
2639 the value is reset to a plain "gmake" and is not useful.
2641 gmtime_r_proto (d_gmtime_r.U):
2642 This variable encodes the prototype of gmtime_r.
2643 It is zero if d_gmtime_r is undef, and one of the
2644 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2647 gnulibc_version (d_gnulibc.U):
2648 This variable contains the version number of the GNU C library.
2649 It is usually something like '2.2.5'. It is a plain '' if this
2650 is not the GNU C library, or if the version is unknown.
2653 This variable is used internally by Configure to determine the
2654 full pathname (if any) of the grep program. After Configure runs,
2655 the value is reset to a plain "grep" and is not useful.
2658 This variable contains a command that produces the text of the
2659 /etc/group file. This is normally "cat /etc/group", but can be
2660 "ypcat group" when NIS is used.
2661 On some systems, such as os390, there may be no equivalent
2662 command, in which case this variable is unset.
2664 groupstype (groupstype.U):
2665 This variable defines Groups_t to be something like gid_t, int,
2666 ushort, or whatever type is used for the second argument to
2667 getgroups() and setgroups(). Usually, this is the same as
2668 gidtype (gid_t), but sometimes it isn't.
2671 This variable is used internally by Configure to determine the
2672 full pathname (if any) of the gzip program. After Configure runs,
2673 the value is reset to a plain "gzip" and is not useful.
2675 h_fcntl (h_fcntl.U):
2676 This is variable gets set in various places to tell i_fcntl that
2677 <fcntl.h> should be included.
2679 h_sysfile (h_sysfile.U):
2680 This is variable gets set in various places to tell i_sys_file that
2681 <sys/file.h> should be included.
2684 Gives the type of hints used for previous answers. May be one of
2685 "default", "recommended" or "previous".
2688 This variable contains a command that produces the text of the
2689 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2690 "ypcat hosts" when NIS is used.
2691 On some systems, such as os390, there may be no equivalent
2692 command, in which case this variable is unset.
2694 html1dir (html1dir.U):
2695 This variable contains the name of the directory in which html
2696 source pages are to be put. This directory is for pages
2697 that describe whole programs, not libraries or modules. It
2698 is intended to correspond roughly to section 1 of the Unix
2701 html1direxp (html1dir.U):
2702 This variable is the same as the html1dir variable, but is filename
2703 expanded at configuration time, for convenient use in makefiles.
2705 html3dir (html3dir.U):
2706 This variable contains the name of the directory in which html
2707 source pages are to be put. This directory is for pages
2708 that describe libraries or modules. It is intended to
2709 correspond roughly to section 3 of the Unix manuals.
2711 html3direxp (html3dir.U):
2712 This variable is the same as the html3dir variable, but is filename
2713 expanded at configuration time, for convenient use in makefiles.
2716 This variable is the size of an I16 in bytes.
2719 This variable contains the C type used for Perl's I16.
2722 This variable is the size of an I32 in bytes.
2725 This variable contains the C type used for Perl's I32.
2728 This variable is the size of an I64 in bytes.
2731 This variable contains the C type used for Perl's I64.
2734 This variable is the size of an I8 in bytes.
2737 This variable contains the C type used for Perl's I8.
2739 i_arpainet (i_arpainet.U):
2740 This variable conditionally defines the I_ARPA_INET symbol,
2741 and indicates whether a C program should include <arpa/inet.h>.
2743 i_bsdioctl (i_sysioctl.U):
2744 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2745 indicates to the C program that <sys/bsdioctl.h> exists and should
2748 i_crypt (i_crypt.U):
2749 This variable conditionally defines the I_CRYPT symbol, and indicates
2750 whether a C program should include <crypt.h>.
2753 This variable conditionally defines the I_DB symbol, and indicates
2754 whether a C program may include Berkeley's DB include file <db.h>.
2757 This variable conditionally defines the I_DBM symbol, which
2758 indicates to the C program that <dbm.h> exists and should
2761 i_dirent (i_dirent.U):
2762 This variable conditionally defines I_DIRENT, which indicates
2763 to the C program that it should include <dirent.h>.
2766 This variable conditionally defines the I_DLD symbol, which
2767 indicates to the C program that <dld.h> (GNU dynamic loading)
2768 exists and should be included.
2770 i_dlfcn (i_dlfcn.U):
2771 This variable conditionally defines the I_DLFCN symbol, which
2772 indicates to the C program that <dlfcn.h> exists and should
2775 i_fcntl (i_fcntl.U):
2776 This variable controls the value of I_FCNTL (which tells
2777 the C program to include <fcntl.h>).
2779 i_float (i_float.U):
2780 This variable conditionally defines the I_FLOAT symbol, and indicates
2781 whether a C program may include <float.h> to get symbols like DBL_MAX
2782 or DBL_MIN, i.e. machine dependent floating point values.
2785 This variable conditionally defines the I_FP symbol, and indicates
2786 whether a C program should include <fp.h>.
2788 i_fp_class (i_fp_class.U):
2789 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2790 whether a C program should include <fp_class.h>.
2793 This variable conditionally defines the I_GDBM symbol, which
2794 indicates to the C program that <gdbm.h> exists and should
2798 This variable conditionally defines the I_GRP symbol, and indicates
2799 whether a C program should include <grp.h>.
2801 i_ieeefp (i_ieeefp.U):
2802 This variable conditionally defines the I_IEEEFP symbol, and indicates
2803 whether a C program should include <ieeefp.h>.
2805 i_inttypes (i_inttypes.U):
2806 This variable conditionally defines the I_INTTYPES symbol,
2807 and indicates whether a C program should include <inttypes.h>.
2809 i_langinfo (i_langinfo.U):
2810 This variable conditionally defines the I_LANGINFO symbol,
2811 and indicates whether a C program should include <langinfo.h>.
2813 i_libutil (i_libutil.U):
2814 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2815 whether a C program should include <libutil.h>.
2817 i_limits (i_limits.U):
2818 This variable conditionally defines the I_LIMITS symbol, and indicates
2819 whether a C program may include <limits.h> to get symbols like WORD_BIT
2822 i_locale (i_locale.U):
2823 This variable conditionally defines the I_LOCALE symbol,
2824 and indicates whether a C program should include <locale.h>.
2826 i_machcthr (i_machcthr.U):
2827 This variable conditionally defines the I_MACH_CTHREADS symbol,
2828 and indicates whether a C program should include <mach/cthreads.h>.
2830 i_malloc (i_malloc.U):
2831 This variable conditionally defines the I_MALLOC symbol, and indicates
2832 whether a C program should include <malloc.h>.
2835 This variable conditionally defines the I_MATH symbol, and indicates
2836 whether a C program may include <math.h>.
2838 i_memory (i_memory.U):
2839 This variable conditionally defines the I_MEMORY symbol, and indicates
2840 whether a C program should include <memory.h>.
2842 i_mntent (i_mntent.U):
2843 This variable conditionally defines the I_MNTENT symbol, and indicates
2844 whether a C program should include <mntent.h>.
2847 This variable conditionally defines the I_NDBM symbol, which
2848 indicates to the C program that <ndbm.h> exists and should
2851 i_netdb (i_netdb.U):
2852 This variable conditionally defines the I_NETDB symbol, and indicates
2853 whether a C program should include <netdb.h>.
2855 i_neterrno (i_neterrno.U):
2856 This variable conditionally defines the I_NET_ERRNO symbol, which
2857 indicates to the C program that <net/errno.h> exists and should
2860 i_netinettcp (i_netinettcp.U):
2861 This variable conditionally defines the I_NETINET_TCP symbol,
2862 and indicates whether a C program should include <netinet/tcp.h>.
2865 This variable conditionally defines I_NETINET_IN, which indicates
2866 to the C program that it should include <netinet/in.h>. Otherwise,
2867 you may try <sys/in.h>.
2870 This variable conditionally defines the I_POLL symbol, and indicates
2871 whether a C program should include <poll.h>.
2874 This variable conditionally defines the I_PROT symbol, and indicates
2875 whether a C program should include <prot.h>.
2877 i_pthread (i_pthread.U):
2878 This variable conditionally defines the I_PTHREAD symbol,
2879 and indicates whether a C program should include <pthread.h>.
2882 This variable conditionally defines I_PWD, which indicates
2883 to the C program that it should include <pwd.h>.
2885 i_rpcsvcdbm (i_dbm.U):
2886 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2887 indicates to the C program that <rpcsvc/dbm.h> exists and should
2888 be included. Some System V systems might need this instead of <dbm.h>.
2891 This variable conditionally defines the I_SFIO symbol,
2892 and indicates whether a C program should include <sfio.h>.
2894 i_sgtty (i_termio.U):
2895 This variable conditionally defines the I_SGTTY symbol, which
2896 indicates to the C program that it should include <sgtty.h> rather
2899 i_shadow (i_shadow.U):
2900 This variable conditionally defines the I_SHADOW symbol, and indicates
2901 whether a C program should include <shadow.h>.
2903 i_socks (i_socks.U):
2904 This variable conditionally defines the I_SOCKS symbol, and indicates
2905 whether a C program should include <socks.h>.
2907 i_stdarg (i_varhdr.U):
2908 This variable conditionally defines the I_STDARG symbol, which
2909 indicates to the C program that <stdarg.h> exists and should
2912 i_stddef (i_stddef.U):
2913 This variable conditionally defines the I_STDDEF symbol, which
2914 indicates to the C program that <stddef.h> exists and should
2917 i_stdlib (i_stdlib.U):
2918 This variable conditionally defines the I_STDLIB symbol, which
2919 indicates to the C program that <stdlib.h> exists and should
2922 i_string (i_string.U):
2923 This variable conditionally defines the I_STRING symbol, which
2924 indicates that <string.h> should be included rather than <strings.h>.
2926 i_sunmath (i_sunmath.U):
2927 This variable conditionally defines the I_SUNMATH symbol, and indicates
2928 whether a C program should include <sunmath.h>.
2930 i_sysaccess (i_sysaccess.U):
2931 This variable conditionally defines the I_SYS_ACCESS symbol,
2932 and indicates whether a C program should include <sys/access.h>.
2934 i_sysdir (i_sysdir.U):
2935 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2936 whether a C program should include <sys/dir.h>.
2938 i_sysfile (i_sysfile.U):
2939 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2940 whether a C program should include <sys/file.h> to get R_OK and friends.
2942 i_sysfilio (i_sysioctl.U):
2943 This variable conditionally defines the I_SYS_FILIO symbol, which
2944 indicates to the C program that <sys/filio.h> exists and should
2945 be included in preference to <sys/ioctl.h>.
2948 This variable conditionally defines I_SYS_IN, which indicates
2949 to the C program that it should include <sys/in.h> instead of
2952 i_sysioctl (i_sysioctl.U):
2953 This variable conditionally defines the I_SYS_IOCTL symbol, which
2954 indicates to the C program that <sys/ioctl.h> exists and should
2957 i_syslog (i_syslog.U):
2958 This variable conditionally defines the I_SYSLOG symbol,
2959 and indicates whether a C program should include <syslog.h>.
2961 i_sysmman (i_sysmman.U):
2962 This variable conditionally defines the I_SYS_MMAN symbol, and
2963 indicates whether a C program should include <sys/mman.h>.
2965 i_sysmode (i_sysmode.U):
2966 This variable conditionally defines the I_SYSMODE symbol,
2967 and indicates whether a C program should include <sys/mode.h>.
2969 i_sysmount (i_sysmount.U):
2970 This variable conditionally defines the I_SYSMOUNT symbol,
2971 and indicates whether a C program should include <sys/mount.h>.
2973 i_sysndir (i_sysndir.U):
2974 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2975 whether a C program should include <sys/ndir.h>.
2977 i_sysparam (i_sysparam.U):
2978 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2979 whether a C program should include <sys/param.h>.
2981 i_sysresrc (i_sysresrc.U):
2982 This variable conditionally defines the I_SYS_RESOURCE symbol,
2983 and indicates whether a C program should include <sys/resource.h>.
2985 i_syssecrt (i_syssecrt.U):
2986 This variable conditionally defines the I_SYS_SECURITY symbol,
2987 and indicates whether a C program should include <sys/security.h>.
2989 i_sysselct (i_sysselct.U):
2990 This variable conditionally defines I_SYS_SELECT, which indicates
2991 to the C program that it should include <sys/select.h> in order to
2992 get the definition of struct timeval.
2994 i_syssockio (i_sysioctl.U):
2995 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2996 C program that socket ioctl codes may be found in <sys/sockio.h>
2997 instead of <sys/ioctl.h>.
2999 i_sysstat (i_sysstat.U):
3000 This variable conditionally defines the I_SYS_STAT symbol,
3001 and indicates whether a C program should include <sys/stat.h>.
3003 i_sysstatfs (i_sysstatfs.U):
3004 This variable conditionally defines the I_SYSSTATFS symbol,
3005 and indicates whether a C program should include <sys/statfs.h>.
3007 i_sysstatvfs (i_sysstatvfs.U):
3008 This variable conditionally defines the I_SYSSTATVFS symbol,
3009 and indicates whether a C program should include <sys/statvfs.h>.
3011 i_systime (i_time.U):
3012 This variable conditionally defines I_SYS_TIME, which indicates
3013 to the C program that it should include <sys/time.h>.
3015 i_systimek (i_time.U):
3016 This variable conditionally defines I_SYS_TIME_KERNEL, which
3017 indicates to the C program that it should include <sys/time.h>
3018 with KERNEL defined.
3020 i_systimes (i_systimes.U):
3021 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3022 whether a C program should include <sys/times.h>.
3024 i_systypes (i_systypes.U):
3025 This variable conditionally defines the I_SYS_TYPES symbol,
3026 and indicates whether a C program should include <sys/types.h>.
3028 i_sysuio (i_sysuio.U):
3029 This variable conditionally defines the I_SYSUIO symbol, and indicates
3030 whether a C program should include <sys/uio.h>.
3032 i_sysun (i_sysun.U):
3033 This variable conditionally defines I_SYS_UN, which indicates
3034 to the C program that it should include <sys/un.h> to get UNIX
3035 domain socket definitions.
3037 i_sysutsname (i_sysutsname.U):
3038 This variable conditionally defines the I_SYSUTSNAME symbol,
3039 and indicates whether a C program should include <sys/utsname.h>.
3041 i_sysvfs (i_sysvfs.U):
3042 This variable conditionally defines the I_SYSVFS symbol,
3043 and indicates whether a C program should include <sys/vfs.h>.
3045 i_syswait (i_syswait.U):
3046 This variable conditionally defines I_SYS_WAIT, which indicates
3047 to the C program that it should include <sys/wait.h>.
3049 i_termio (i_termio.U):
3050 This variable conditionally defines the I_TERMIO symbol, which
3051 indicates to the C program that it should include <termio.h> rather
3054 i_termios (i_termio.U):
3055 This variable conditionally defines the I_TERMIOS symbol, which
3056 indicates to the C program that the POSIX <termios.h> file is
3060 This variable conditionally defines I_TIME, which indicates
3061 to the C program that it should include <time.h>.
3063 i_unistd (i_unistd.U):
3064 This variable conditionally defines the I_UNISTD symbol, and indicates
3065 whether a C program should include <unistd.h>.
3067 i_ustat (i_ustat.U):
3068 This variable conditionally defines the I_USTAT symbol, and indicates
3069 whether a C program should include <ustat.h>.
3071 i_utime (i_utime.U):
3072 This variable conditionally defines the I_UTIME symbol, and indicates
3073 whether a C program should include <utime.h>.
3075 i_values (i_values.U):
3076 This variable conditionally defines the I_VALUES symbol, and indicates
3077 whether a C program may include <values.h> to get symbols like MAXLONG
3080 i_varargs (i_varhdr.U):
3081 This variable conditionally defines I_VARARGS, which indicates
3082 to the C program that it should include <varargs.h>.
3084 i_varhdr (i_varhdr.U):
3085 Contains the name of the header to be included to get va_dcl definition.
3086 Typically one of varargs.h or stdarg.h.
3088 i_vfork (i_vfork.U):
3089 This variable conditionally defines the I_VFORK symbol, and indicates
3090 whether a C program should include vfork.h.
3092 ignore_versioned_solibs (libs.U):
3093 This variable should be non-empty if non-versioned shared
3094 libraries (libfoo.so.x.y) are to be ignored (because they
3095 cannot be linked against).
3097 inc_version_list (inc_version_list.U):
3098 This variable specifies the list of subdirectories in over
3099 which perl.c:incpush() and lib/lib.pm will automatically
3100 search when adding directories to @INC. The elements in
3101 the list are separated by spaces. This is only useful
3102 if you have a perl library directory tree structured like the
3103 default one. See INSTALL for how this works. The versioned
3104 site_perl directory was introduced in 5.005, so that is the
3105 lowest possible value.
3107 inc_version_list_init (inc_version_list.U):
3108 This variable holds the same list as inc_version_list, but
3109 each item is enclosed in double quotes and separated by commas,
3110 suitable for use in the PERL_INC_VERSION_LIST initialization.
3113 This variable must preceed the normal include path to get hte
3114 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3115 Value can be "" or "/bsd43" on mips.
3118 This variable is defined but not used by Configure.
3119 The value is a plain '' and is not useful.
3121 installarchlib (archlib.U):
3122 This variable is really the same as archlibexp but may differ on
3123 those systems using AFS. For extra portability, only this variable
3124 should be used in makefiles.
3127 This variable is the same as binexp unless AFS is running in which case
3128 the user is explicitely prompted for it. This variable should always
3129 be used in your makefiles for maximum portability.
3131 installhtml1dir (html1dir.U):
3132 This variable is really the same as html1direxp, unless you are
3133 using a different installprefix. For extra portability, you
3134 should only use this variable within your makefiles.
3136 installhtml3dir (html3dir.U):
3137 This variable is really the same as html3direxp, unless you are
3138 using a different installprefix. For extra portability, you
3139 should only use this variable within your makefiles.
3141 installman1dir (man1dir.U):
3142 This variable is really the same as man1direxp, unless you are using
3143 AFS in which case it points to the read/write location whereas
3144 man1direxp only points to the read-only access location. For extra
3145 portability, you should only use this variable within your makefiles.
3147 installman3dir (man3dir.U):
3148 This variable is really the same as man3direxp, unless you are using
3149 AFS in which case it points to the read/write location whereas
3150 man3direxp only points to the read-only access location. For extra
3151 portability, you should only use this variable within your makefiles.
3153 installprefix (installprefix.U):
3154 This variable holds the name of the directory below which
3155 "make install" will install the package. For most users, this
3156 is the same as prefix. However, it is useful for
3157 installing the software into a different (usually temporary)
3158 location after which it can be bundled up and moved somehow
3159 to the final location specified by prefix.
3161 installprefixexp (installprefix.U):
3162 This variable holds the full absolute path of installprefix
3163 with all ~-expansion done.
3165 installprivlib (privlib.U):
3166 This variable is really the same as privlibexp but may differ on
3167 those systems using AFS. For extra portability, only this variable
3168 should be used in makefiles.
3170 installscript (scriptdir.U):
3171 This variable is usually the same as scriptdirexp, unless you are on
3172 a system running AFS, in which case they may differ slightly. You
3173 should always use this variable within your makefiles for portability.
3175 installsitearch (sitearch.U):
3176 This variable is really the same as sitearchexp but may differ on
3177 those systems using AFS. For extra portability, only this variable
3178 should be used in makefiles.
3180 installsitebin (sitebin.U):
3181 This variable is usually the same as sitebinexp, unless you are on
3182 a system running AFS, in which case they may differ slightly. You
3183 should always use this variable within your makefiles for portability.
3185 installsitehtml1dir (sitehtml1dir.U):
3186 This variable is really the same as sitehtml1direxp, unless you are using
3187 AFS in which case it points to the read/write location whereas
3188 html1direxp only points to the read-only access location. For extra
3189 portability, you should only use this variable within your makefiles.
3191 installsitehtml3dir (sitehtml3dir.U):
3192 This variable is really the same as sitehtml3direxp, unless you are using
3193 AFS in which case it points to the read/write location whereas
3194 html3direxp only points to the read-only access location. For extra
3195 portability, you should only use this variable within your makefiles.
3197 installsitelib (sitelib.U):
3198 This variable is really the same as sitelibexp but may differ on
3199 those systems using AFS. For extra portability, only this variable
3200 should be used in makefiles.
3202 installsiteman1dir (siteman1dir.U):
3203 This variable is really the same as siteman1direxp, unless you are using
3204 AFS in which case it points to the read/write location whereas
3205 man1direxp only points to the read-only access location. For extra
3206 portability, you should only use this variable within your makefiles.
3208 installsiteman3dir (siteman3dir.U):
3209 This variable is really the same as siteman3direxp, unless you are using
3210 AFS in which case it points to the read/write location whereas
3211 man3direxp only points to the read-only access location. For extra
3212 portability, you should only use this variable within your makefiles.
3214 installsitescript (sitescript.U):
3215 This variable is usually the same as sitescriptexp, unless you are on
3216 a system running AFS, in which case they may differ slightly. You
3217 should always use this variable within your makefiles for portability.
3219 installstyle (installstyle.U):
3220 This variable describes the "style" of the perl installation.
3221 This is intended to be useful for tools that need to
3222 manipulate entire perl distributions. Perl itself doesn't use
3223 this to find its libraries -- the library directories are
3224 stored directly in Config.pm. Currently, there are only two
3225 styles: "lib" and "lib/perl5". The default library locations
3226 (e.g. privlib, sitelib) are either $prefix/lib or
3227 $prefix/lib/perl5. The former is useful if $prefix is a
3228 directory dedicated to perl (e.g. /opt/perl), while the latter
3229 is useful if $prefix is shared by many packages, e.g. if
3232 Unfortunately, while this "style" variable is used to set
3233 defaults for all three directory hierarchies (core, vendor, and
3234 site), there is no guarantee that the same style is actually
3235 appropriate for all those directories. For example, $prefix
3236 might be /opt/perl, but $siteprefix might be /usr/local.
3237 (Perhaps, in retrospect, the "lib" style should never have been
3238 supported, but it did seem like a nice idea at the time.)
3240 The situation is even less clear for tools such as MakeMaker
3241 that can be used to install additional modules into
3242 non-standard places. For example, if a user intends to install
3243 a module into a private directory (perhaps by setting PREFIX on
3244 the Makefile.PL command line), then there is no reason to
3245 assume that the Configure-time $installstyle setting will be
3246 relevant for that PREFIX.
3248 This may later be extended to include other information, so
3249 be careful with pattern-matching on the results.
3251 For compatibility with perl5.005 and earlier, the default
3252 setting is based on whether or not $prefix contains the string
3255 installusrbinperl (instubperl.U):
3256 This variable tells whether Perl should be installed also as
3257 /usr/bin/perl in addition to
3260 installvendorarch (vendorarch.U):
3261 This variable is really the same as vendorarchexp but may differ on
3262 those systems using AFS. For extra portability, only this variable
3263 should be used in makefiles.
3265 installvendorbin (vendorbin.U):
3266 This variable is really the same as vendorbinexp but may differ on
3267 those systems using AFS. For extra portability, only this variable
3268 should be used in makefiles.
3270 installvendorhtml1dir (vendorhtml1dir.U):
3271 This variable is really the same as vendorhtml1direxp but may differ on
3272 those systems using AFS. For extra portability, only this variable
3273 should be used in makefiles.
3275 installvendorhtml3dir (vendorhtml3dir.U):
3276 This variable is really the same as vendorhtml3direxp but may differ on
3277 those systems using AFS. For extra portability, only this variable
3278 should be used in makefiles.
3280 installvendorlib (vendorlib.U):
3281 This variable is really the same as vendorlibexp but may differ on
3282 those systems using AFS. For extra portability, only this variable
3283 should be used in makefiles.
3285 installvendorman1dir (vendorman1dir.U):
3286 This variable is really the same as vendorman1direxp but may differ on
3287 those systems using AFS. For extra portability, only this variable
3288 should be used in makefiles.
3290 installvendorman3dir (vendorman3dir.U):
3291 This variable is really the same as vendorman3direxp but may differ on
3292 those systems using AFS. For extra portability, only this variable
3293 should be used in makefiles.
3295 installvendorscript (vendorscript.U):
3296 This variable is really the same as vendorscriptexp but may differ on
3297 those systems using AFS. For extra portability, only this variable
3298 should be used in makefiles.
3300 intsize (intsize.U):
3301 This variable contains the value of the INTSIZE symbol, which
3302 indicates to the C program how many bytes there are in an int.
3304 issymlink (issymlink.U):
3305 This variable holds the test command to test for a symbolic link
3306 (if they are supported). Typical values include 'test -h' and
3309 ivdformat (perlxvf.U):
3310 This variable contains the format string used for printing
3311 a Perl IV as a signed decimal integer.
3314 This variable is the size of an IV in bytes.
3317 This variable contains the C type used for Perl's IV.
3319 known_extensions (Extensions.U):
3320 This variable holds a list of all XS extensions included in
3324 This variable is defined but not used by Configure.
3325 The value is a plain '' and is not useful.
3328 This variable indicates the program to be used to link
3329 libraries for dynamic loading. On some systems, it is 'ld'.
3330 On ELF systems, it should be $cc. Mostly, we'll try to respect
3331 the hint file setting.
3333 lddlflags (dlsrc.U):
3334 This variable contains any special flags that might need to be
3335 passed to $ld to create a shared library suitable for dynamic
3336 loading. It is up to the makefile to use it. For hpux, it
3337 should be '-b'. For sunos 4.1, it is empty.
3339 ldflags (ccflags.U):
3340 This variable contains any additional C loader flags desired by
3341 the user. It is up to the Makefile to use this.
3343 ldflags_uselargefiles (uselfs.U):
3344 This variable contains the loader flags needed by large file builds
3345 and added to ldflags by hints files.
3347 ldlibpthname (libperl.U):
3348 This variable holds the name of the shared library
3349 search path, often LD_LIBRARY_PATH. To get an empty
3350 string, the hints file must set this to 'none'.
3353 This variable is used internally by Configure to determine the
3354 full pathname (if any) of the less program. After Configure runs,
3355 the value is reset to a plain "less" and is not useful.
3358 This is an old synonym for _a.
3361 This variable contains the location of the C library.
3363 libperl (libperl.U):
3364 The perl executable is obtained by linking perlmain.c with
3365 libperl, any static extensions (usually just DynaLoader),
3366 and any other libraries needed on this system. libperl
3367 is usually libperl.a, but can also be libperl.so.xxx if
3368 the user wishes to build a perl executable with a shared
3372 This variable holds the general path (space-separated) used to find
3373 libraries. It is intended to be used by other units.
3376 This variable holds the additional libraries we want to use.
3377 It is up to the Makefile to deal with it. The list can be empty.
3380 This variable holds the directory names aka dirnames of the libraries
3381 we found and accepted, duplicates are removed.
3384 This variable holds the filenames aka basenames of the libraries
3385 we found and accepted.
3388 This variable holds the full pathnames of the libraries
3389 we found and accepted.
3392 This variable holds the directory names probed for libraries.
3394 libswanted (Myinit.U):
3395 This variable holds a list of all the libraries we want to
3396 search. The order is chosen to pick up the c library
3397 ahead of ucb or bsd libraries for SVR4.
3399 libswanted_uselargefiles (uselfs.U):
3400 This variable contains the libraries needed by large file builds
3401 and added to ldflags by hints files. It is a space separated list
3402 of the library names without the "lib" prefix or any suffix, just
3406 This variable is defined but not used by Configure.
3407 The value is a plain '' and is not useful.
3410 This variable is defined but not used by Configure.
3411 The value is a plain '' and is not useful.
3413 lkflags (ccflags.U):
3414 This variable contains any additional C partial linker flags desired by
3415 the user. It is up to the Makefile to use this.
3418 This variable is used internally by Configure to determine the
3419 full pathname (if any) of the ln program. After Configure runs,
3420 the value is reset to a plain "ln" and is not useful.
3423 This variable holds the name of the command to make
3424 symbolic links (if they are supported). It can be used
3425 in the Makefile. It is either 'ln -s' or 'ln'
3427 localtime_r_proto (d_localtime_r.U):
3428 This variable encodes the prototype of localtime_r.
3429 It is zero if d_localtime_r is undef, and one of the
3430 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3433 locincpth (ccflags.U):
3434 This variable contains a list of additional directories to be
3435 searched by the compiler. The appropriate '-I' directives will
3436 be added to ccflags. This is intended to simplify setting
3437 local directories from the Configure command line.
3438 It's not much, but it parallels the loclibpth stuff in libpth.U.
3440 loclibpth (libpth.U):
3441 This variable holds the paths (space-separated) used to find local
3442 libraries. It is prepended to libpth, and is intended to be easily
3443 set from the command line.
3445 longdblsize (d_longdbl.U):
3446 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3447 indicates to the C program how many bytes there are in a long double,
3448 if this system supports long doubles.
3450 longlongsize (d_longlong.U):
3451 This variable contains the value of the LONGLONGSIZE symbol, which
3452 indicates to the C program how many bytes there are in a long long,
3453 if this system supports long long.
3455 longsize (intsize.U):
3456 This variable contains the value of the LONGSIZE symbol, which
3457 indicates to the C program how many bytes there are in a long.
3460 This variable is defined but not used by Configure.
3461 The value is a plain '' and is not useful.
3464 This variable is defined but not used by Configure.
3465 The value is a plain '' and is not useful.
3468 This variable is used internally by Configure to determine the
3469 full pathname (if any) of the ls program. After Configure runs,
3470 the value is reset to a plain "ls" and is not useful.
3472 lseeksize (lseektype.U):
3473 This variable defines lseektype to be something like off_t, long,
3474 or whatever type is used to declare lseek offset's type in the
3475 kernel (which also appears to be lseek's return type).
3477 lseektype (lseektype.U):
3478 This variable defines lseektype to be something like off_t, long,
3479 or whatever type is used to declare lseek offset's type in the
3480 kernel (which also appears to be lseek's return type).
3483 This variable is defined but not used by Configure.
3484 The value is a plain '' and is not useful.
3487 This variable is defined but not used by Configure.
3488 The value is a plain '' and is not useful.
3491 This variable is used internally by Configure to determine the
3492 full pathname (if any) of the make program. After Configure runs,
3493 the value is reset to a plain "make" and is not useful.
3495 make_set_make (make.U):
3496 Some versions of 'make' set the variable MAKE. Others do not.
3497 This variable contains the string to be included in Makefile.SH
3498 so that MAKE is set if needed, and not if not needed.
3499 Possible values are:
3501 make_set_make='#' # If your make program handles this for you,
3503 make_set_make="MAKE=$make" # if it doesn't.
3505 This uses a comment character to distinguish a
3506 'set' value (from a previous config.sh or Configure '-D' option)
3507 from an uncomputed value.
3509 mallocobj (mallocsrc.U):
3510 This variable contains the name of the malloc.o that this package
3511 generates, if that malloc.o is preferred over the system malloc.
3512 Otherwise the value is null. This variable is intended for generating
3513 Makefiles. See mallocsrc.
3515 mallocsrc (mallocsrc.U):
3516 This variable contains the name of the malloc.c that comes with
3517 the package, if that malloc.c is preferred over the system malloc.
3518 Otherwise the value is null. This variable is intended for generating
3521 malloctype (mallocsrc.U):
3522 This variable contains the kind of ptr returned by malloc and realloc.
3524 man1dir (man1dir.U):
3525 This variable contains the name of the directory in which manual
3526 source pages are to be put. It is the responsibility of the
3527 Makefile.SH to get the value of this into the proper command.
3528 You must be prepared to do the ~name expansion yourself.
3530 man1direxp (man1dir.U):
3531 This variable is the same as the man1dir variable, but is filename
3532 expanded at configuration time, for convenient use in makefiles.
3534 man1ext (man1dir.U):
3535 This variable contains the extension that the manual page should
3536 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3539 man3dir (man3dir.U):
3540 This variable contains the name of the directory in which manual
3541 source pages are to be put. It is the responsibility of the
3542 Makefile.SH to get the value of this into the proper command.
3543 You must be prepared to do the ~name expansion yourself.
3545 man3direxp (man3dir.U):
3546 This variable is the same as the man3dir variable, but is filename
3547 expanded at configuration time, for convenient use in makefiles.
3549 man3ext (man3dir.U):
3550 This variable contains the extension that the manual page should
3551 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3555 This variable is used internally by Configure to determine the
3556 full pathname (if any) of the Mcc program. After Configure runs,
3557 the value is reset to a plain "Mcc" and is not useful.
3559 mips_type (usrinc.U):
3560 This variable holds the environment type for the mips system.
3561 Possible values are "BSD 4.3" and "System V".
3563 mistrustnm (Csym.U):
3564 This variable can be used to establish a fallthrough for the cases
3565 where nm fails to find a symbol. If usenm is false or usenm is true
3566 and mistrustnm is false, this variable has no effect. If usenm is true
3567 and mistrustnm is "compile", a test program will be compiled to try to
3568 find any symbol that can't be located via nm lookup. If mistrustnm is
3569 "run", the test program will be run as well as being compiled.
3572 This variable is used internally by Configure to determine the
3573 full pathname (if any) of the mkdir program. After Configure runs,
3574 the value is reset to a plain "mkdir" and is not useful.
3576 mmaptype (d_mmap.U):
3577 This symbol contains the type of pointer returned by mmap()
3578 (and simultaneously the type of the first argument).
3579 It can be 'void *' or 'caddr_t'.
3581 modetype (modetype.U):
3582 This variable defines modetype to be something like mode_t,
3583 int, unsigned short, or whatever type is used to declare file
3584 modes for system calls.
3587 This variable is used internally by Configure to determine the
3588 full pathname (if any) of the more program. After Configure runs,
3589 the value is reset to a plain "more" and is not useful.
3591 multiarch (multiarch.U):
3592 This variable conditionally defines the MULTIARCH symbol
3593 which signifies the presence of multiplatform files.
3594 This is normally set by hints files.
3597 This variable is defined but not used by Configure.
3598 The value is a plain '' and is not useful.
3600 myarchname (archname.U):
3601 This variable holds the architecture name computed by Configure in
3602 a previous run. It is not intended to be perused by any user and
3603 should never be set in a hint file.
3605 mydomain (myhostname.U):
3606 This variable contains the eventual value of the MYDOMAIN symbol,
3607 which is the domain of the host the program is going to run on.
3608 The domain must be appended to myhostname to form a complete host name.
3609 The dot comes with mydomain, and need not be supplied by the program.
3611 myhostname (myhostname.U):
3612 This variable contains the eventual value of the MYHOSTNAME symbol,
3613 which is the name of the host the program is going to run on.
3614 The domain is not kept with hostname, but must be gotten from mydomain.
3615 The dot comes with mydomain, and need not be supplied by the program.
3617 myuname (Oldconfig.U):
3618 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3619 pseudo variables assignments in the output are stripped, thank you. The
3620 whole thing is then lower-cased.
3623 This variable contains the '-n' flag if that is what causes the echo
3624 command to suppress newline. Otherwise it is null. Correct usage is
3625 $echo $n "prompt for a question: $c".
3627 need_va_copy (need_va_copy.U):
3628 This symbol, if defined, indicates that the system stores
3629 the variable argument list datatype, va_list, in a format
3630 that cannot be copied by simple assignment, so that some
3631 other means must be used when copying is required.
3632 As such systems vary in their provision (or non-provision)
3633 of copying mechanisms, handy.h defines a platform-
3634 independent macro, Perl_va_copy(src, dst), to do the job.
3636 netdb_hlen_type (netdbtype.U):
3637 This variable holds the type used for the 2nd argument to
3638 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3639 This is only useful if you have gethostbyaddr(), naturally.
3641 netdb_host_type (netdbtype.U):
3642 This variable holds the type used for the 1st argument to
3643 gethostbyaddr(). Usually, this is char * or void *, possibly
3644 with or without a const prefix.
3645 This is only useful if you have gethostbyaddr(), naturally.
3647 netdb_name_type (netdbtype.U):
3648 This variable holds the type used for the argument to
3649 gethostbyname(). Usually, this is char * or const char *.
3650 This is only useful if you have gethostbyname(), naturally.
3652 netdb_net_type (netdbtype.U):
3653 This variable holds the type used for the 1st argument to
3654 getnetbyaddr(). Usually, this is int or long.
3655 This is only useful if you have getnetbyaddr(), naturally.
3658 This variable is used internally by Configure to determine the
3659 full pathname (if any) of the nm program. After Configure runs,
3660 the value is reset to a plain "nm" and is not useful.
3663 This variable holds the options that may be necessary for nm.
3665 nm_so_opt (usenm.U):
3666 This variable holds the options that may be necessary for nm
3667 to work on a shared library but that can not be used on an
3668 archive library. Currently, this is only used by Linux, where
3669 nm --dynamic is *required* to get symbols from an ELF library which
3670 has been stripped, but nm --dynamic is *fatal* on an archive library.
3671 Maybe Linux should just always set usenm=false.
3673 nonxs_ext (Extensions.U):
3674 This variable holds a list of all non-xs extensions included
3675 in the package. All of them will be built.
3678 This variable is used internally by Configure to determine the
3679 full pathname (if any) of the nroff program. After Configure runs,
3680 the value is reset to a plain "nroff" and is not useful.
3682 nv_preserves_uv_bits (perlxv.U):
3683 This variable indicates how many of bits type uvtype
3684 a variable nvtype can preserve.
3686 nveformat (perlxvf.U):
3687 This variable contains the format string used for printing
3688 a Perl NV using %e-ish floating point format.
3690 nvEUformat (perlxvf.U):
3691 This variable contains the format string used for printing
3692 a Perl NV using %E-ish floating point format.
3694 nvfformat (perlxvf.U):
3695 This variable confains the format string used for printing
3696 a Perl NV using %f-ish floating point format.
3698 nvFUformat (perlxvf.U):
3699 This variable confains the format string used for printing
3700 a Perl NV using %F-ish floating point format.
3702 nvgformat (perlxvf.U):
3703 This variable contains the format string used for printing
3704 a Perl NV using %g-ish floating point format.
3706 nvGUformat (perlxvf.U):
3707 This variable contains the format string used for printing
3708 a Perl NV using %G-ish floating point format.
3711 This variable is the size of an NV in bytes.
3714 This variable contains the C type used for Perl's NV.
3716 o_nonblock (nblock_io.U):
3717 This variable bears the symbol value to be used during open() or fcntl()
3718 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3719 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3720 but that is only supported by some devices.
3723 This is an old synonym for _o.
3725 old_pthread_create_joinable (d_pthrattrj.U):
3726 This variable defines the constant to use for creating joinable
3727 (aka undetached) pthreads. Unused if pthread.h defines
3728 PTHREAD_CREATE_JOINABLE. If used, possible values are
3729 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3731 optimize (ccflags.U):
3732 This variable contains any optimizer/debugger flag that should be used.
3733 It is up to the Makefile to use it.
3735 orderlib (orderlib.U):
3736 This variable is "true" if the components of libraries must be ordered
3737 (with `lorder $* | tsort`) before placing them in an archive. Set to
3738 "false" if ranlib or ar can generate random libraries.
3740 osname (Oldconfig.U):
3741 This variable contains the operating system name (e.g. sunos,
3742 solaris, hpux, etc.). It can be useful later on for setting
3743 defaults. Any spaces are replaced with underscores. It is set
3744 to a null string if we can't figure it out.
3746 osvers (Oldconfig.U):
3747 This variable contains the operating system version (e.g.
3748 4.1.3, 5.2, etc.). It is primarily used for helping select
3749 an appropriate hints file, but might be useful elsewhere for
3750 setting defaults. It is set to '' if we can't figure it out.
3751 We try to be flexible about how much of the version number
3752 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3753 same for this package, hints files might just be os_4.0 or
3754 os_4.1, etc., not keeping separate files for each little release.
3756 otherlibdirs (otherlibdirs.U):
3757 This variable contains a colon-separated set of paths for the perl
3758 binary to search for additional library files or modules.
3759 These directories will be tacked to the end of @INC.
3760 Perl will automatically search below each path for version-
3761 and architecture-specific directories. See inc_version_list
3763 A value of ' ' means 'none' and is used to preserve this value
3764 for the next run through Configure.
3766 package (package.U):
3767 This variable contains the name of the package being constructed.
3768 It is primarily intended for the use of later Configure units.
3771 This variable contains the name of the preferred pager on the system.
3772 Usual values are (the full pathnames of) more, less, pg, or cat.
3775 This variable contains a command that produces the text of the
3776 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3777 "ypcat passwd" when NIS is used.
3778 On some systems, such as os390, there may be no equivalent
3779 command, in which case this variable is unset.
3781 patchlevel (patchlevel.U):
3782 The patchlevel level of this package.
3783 The value of patchlevel comes from the patchlevel.h file.
3784 In a version number such as 5.6.1, this is the "6".
3785 In patchlevel.h, this is referred to as "PERL_VERSION".
3788 This is an old synonym for p_ in Head.U, the character
3789 used to separate elements in the command shell search PATH.
3792 This variable contains the full path (if any) to a previously
3793 installed perl5.005 or later suitable for running the script
3794 to determine inc_version_list.
3797 This variable is defined but not used by Configure.
3798 The value is a plain '' and is not useful.
3800 perl_patchlevel (patchlevel.U):
3801 This is the Perl patch level, a numeric change identifier,
3802 as defined by whichever source code maintenance system
3803 is used to maintain the patches; currently Perforce.
3804 It does not correlate with the Perl version numbers or
3805 the maintenance versus development dichotomy except
3806 by also being increasing.
3808 PERL_REVISION (Oldsyms.U):
3809 In a Perl version number such as 5.6.2, this is the 5.
3810 This value is manually set in patchlevel.h
3812 PERL_SUBVERSION (Oldsyms.U):
3813 In a Perl version number such as 5.6.2, this is the 2.
3814 Values greater than 50 represent potentially unstable
3815 development subversions.
3816 This value is manually set in patchlevel.h
3818 PERL_VERSION (Oldsyms.U):
3819 In a Perl version number such as 5.6.2, this is the 6.
3820 This value is manually set in patchlevel.h
3822 perladmin (perladmin.U):
3823 Electronic mail address of the perl5 administrator.
3826 The list of libraries needed by Perl only (any libraries needed
3827 by extensions only will by dropped, if using dynamic loading).
3829 perlpath (perlpath.U):
3830 This variable contains the eventual value of the PERLPATH symbol,
3831 which contains the name of the perl interpreter to be used in
3832 shell scripts and in the "eval 'exec'" idiom. This variable is
3833 not necessarily the pathname of the file containing the perl
3834 interpreter; you must append the executable extension (_exe) if
3835 it is not already present. Note that Perl code that runs during
3836 the Perl build process cannot reference this variable, as Perl
3837 may not have been installed, or even if installed, may be a
3838 different version of Perl.
3841 This variable is used internally by Configure to determine the
3842 full pathname (if any) of the pg program. After Configure runs,
3843 the value is reset to a plain "pg" and is not useful.
3845 phostname (myhostname.U):
3846 This variable contains the eventual value of the PHOSTNAME symbol,
3847 which is a command that can be fed to popen() to get the host name.
3848 The program should probably not presume that the domain is or isn't
3851 pidtype (pidtype.U):
3852 This variable defines PIDTYPE to be something like pid_t, int,
3853 ushort, or whatever type is used to declare process ids in the kernel.
3856 Holds the private path used by Configure to find out the libraries.
3857 Its value is prepend to libpth. This variable takes care of special
3858 machines, like the mips. Usually, it should be empty.
3861 This variable is defined but not used by Configure.
3862 The value is a plain '' and is not useful.
3865 This variable is defined but not used by Configure.
3866 The value is a plain '' and is not useful.
3869 This variable holds the name of the directory below which the
3870 user will install the package. Usually, this is /usr/local, and
3871 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3872 man pages in /usr/local/man, etc. It is only used to set defaults
3873 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3875 prefixexp (prefix.U):
3876 This variable holds the full absolute path of the directory below
3877 which the user will install the package. Derived from prefix.
3879 privlib (privlib.U):
3880 This variable contains the eventual value of the PRIVLIB symbol,
3881 which is the name of the private library for this package. It may
3882 have a ~ on the front. It is up to the makefile to eventually create
3883 this directory while performing installation (with ~ substitution).
3885 privlibexp (privlib.U):
3886 This variable is the ~name expanded version of privlib, so that you
3887 may use it directly in Makefiles or shell scripts.
3889 procselfexe (d_procselfexe.U):
3890 If d_procselfexe is defined, $procselfexe is the filename
3891 of the symbolic link pointing to the absolute pathname of
3892 the executing program.
3894 prototype (prototype.U):
3895 This variable holds the eventual value of CAN_PROTOTYPE, which
3896 indicates the C compiler can handle funciton prototypes.
3898 ptrsize (ptrsize.U):
3899 This variable contains the value of the PTRSIZE symbol, which
3900 indicates to the C program how many bytes there are in a pointer.
3902 quadkind (quadtype.U):
3903 This variable, if defined, encodes the type of a quad:
3904 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3906 quadtype (quadtype.U):
3907 This variable defines Quad_t to be something like long, int,
3908 long long, int64_t, or whatever type is used for 64-bit integers.
3910 randbits (randfunc.U):
3911 Indicates how many bits are produced by the function used to
3912 generate normalized random numbers.
3914 randfunc (randfunc.U):
3915 Indicates the name of the random number function to use.
3916 Values include drand48, random, and rand. In C programs,
3917 the 'Drand01' macro is defined to generate uniformly distributed
3918 random numbers over the range [0., 1.[ (see drand01 and nrand).
3920 random_r_proto (d_random_r.U):
3921 This variable encodes the prototype of random_r.
3922 It is zero if d_random_r is undef, and one of the
3923 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
3926 randseedtype (randfunc.U):
3927 Indicates the type of the argument of the seedfunc.
3929 ranlib (orderlib.U):
3930 This variable is set to the pathname of the ranlib program, if it is
3931 needed to generate random libraries. Set to ":" if ar can generate
3932 random libraries or if random libraries are not supported
3934 rd_nodata (nblock_io.U):
3935 This variable holds the return code from read() when no data is
3936 present. It should be -1, but some systems return 0 when O_NDELAY is
3937 used, which is a shame because you cannot make the difference between
3938 no data and an EOF.. Sigh!
3940 readdir64_r_proto (d_readdir64_r.U):
3941 This variable encodes the prototype of readdir64_r.
3942 It is zero if d_readdir64_r is undef, and one of the
3943 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
3946 readdir_r_proto (d_readdir_r.U):
3947 This variable encodes the prototype of readdir_r.
3948 It is zero if d_readdir_r is undef, and one of the
3949 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
3952 revision (patchlevel.U):
3953 The value of revision comes from the patchlevel.h file.
3954 In a version number such as 5.6.1, this is the "5".
3955 In patchlevel.h, this is referred to as "PERL_REVISION".
3958 This variable is used internally by Configure to determine the
3959 full pathname (if any) of the rm program. After Configure runs,
3960 the value is reset to a plain "rm" and is not useful.
3963 This variable is defined but not used by Configure.
3964 The value is a plain '' and is not useful.
3967 This variable contains the command used by Configure
3968 to copy and execute a cross-compiled executable in the
3969 target host. Useful and available only during Perl build.
3970 Empty string '' if not cross-compiling.
3973 This variable contains 'true' or 'false' depending whether the
3974 nm extraction should be performed or not, according to the value
3975 of usenm and the flags on the Configure command line.
3977 sched_yield (d_pthread_y.U):
3978 This variable defines the way to yield the execution
3979 of the current thread.
3981 scriptdir (scriptdir.U):
3982 This variable holds the name of the directory in which the user wants
3983 to put publicly scripts for the package in question. It is either
3984 the same directory as for binaries, or a special one that can be
3985 mounted across different architectures, like /usr/share. Programs
3986 must be prepared to deal with ~name expansion.
3988 scriptdirexp (scriptdir.U):
3989 This variable is the same as scriptdir, but is filename expanded
3990 at configuration time, for programs not wanting to bother with it.
3993 This variable is used internally by Configure to determine the
3994 full pathname (if any) of the sed program. After Configure runs,
3995 the value is reset to a plain "sed" and is not useful.
3997 seedfunc (randfunc.U):
3998 Indicates the random number generating seed function.
3999 Values include srand48, srandom, and srand.
4001 selectminbits (selectminbits.U):
4002 This variable holds the minimum number of bits operated by select.
4003 That is, if you do select(n, ...), how many bits at least will be
4004 cleared in the masks if some activity is detected. Usually this
4005 is either n or 32*ceil(n/32), especially many little-endians do
4006 the latter. This is only useful if you have select(), naturally.
4008 selecttype (selecttype.U):
4009 This variable holds the type used for the 2nd, 3rd, and 4th
4010 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4011 is defined, and 'int *' otherwise. This is only useful if you
4012 have select(), naturally.
4015 This variable is defined but not used by Configure.
4016 The value is a plain '' and is not useful.
4018 setgrent_r_proto (d_setgrent_r.U):
4019 This variable encodes the prototype of setgrent_r.
4020 It is zero if d_setgrent_r is undef, and one of the
4021 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4024 sethostent_r_proto (d_sethostent_r.U):
4025 This variable encodes the prototype of sethostent_r.
4026 It is zero if d_sethostent_r is undef, and one of the
4027 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4030 setlocale_r_proto (d_setlocale_r.U):
4031 This variable encodes the prototype of setlocale_r.
4032 It is zero if d_setlocale_r is undef, and one of the
4033 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4036 setnetent_r_proto (d_setnetent_r.U):
4037 This variable encodes the prototype of setnetent_r.
4038 It is zero if d_setnetent_r is undef, and one of the
4039 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4042 setprotoent_r_proto (d_setprotoent_r.U):
4043 This variable encodes the prototype of setprotoent_r.
4044 It is zero if d_setprotoent_r is undef, and one of the
4045 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4048 setpwent_r_proto (d_setpwent_r.U):
4049 This variable encodes the prototype of setpwent_r.
4050 It is zero if d_setpwent_r is undef, and one of the
4051 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4054 setservent_r_proto (d_setservent_r.U):
4055 This variable encodes the prototype of setservent_r.
4056 It is zero if d_setservent_r is undef, and one of the
4057 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4061 This variable contains the full pathname of the shell used
4062 on this system to execute Bourne shell scripts. Usually, this will be
4063 /bin/sh, though it's possible that some systems will have /bin/ksh,
4064 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4066 This unit comes before Options.U, so you can't set sh with a '-D'
4067 option, though you can override this (and startsh)
4068 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4071 This variable is defined but not used by Configure.
4072 The value is a plain '' and is not useful.
4074 sharpbang (spitshell.U):
4075 This variable contains the string #! if this system supports that
4078 shmattype (d_shmat.U):
4079 This symbol contains the type of pointer returned by shmat().
4080 It can be 'void *' or 'char *'.
4082 shortsize (intsize.U):
4083 This variable contains the value of the SHORTSIZE symbol which
4084 indicates to the C program how many bytes there are in a short.
4086 shrpenv (libperl.U):
4087 If the user builds a shared libperl.so, then we need to tell the
4088 'perl' executable where it will be able to find the installed libperl.so.
4089 One way to do this on some systems is to set the environment variable
4090 LD_RUN_PATH to the directory that will be the final location of the
4091 shared libperl.so. The makefile can use this with something like
4092 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4094 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4097 See the main perl Makefile.SH for actual working usage.
4098 Alternatively, we might be able to use a command line option such
4099 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4100 $archlibexp/CORE (Linux).
4102 shsharp (spitshell.U):
4103 This variable tells further Configure units whether your sh can
4106 sig_count (sig_name.U):
4107 This variable holds a number larger than the largest valid
4108 signal number. This is usually the same as the NSIG macro.
4110 sig_name (sig_name.U):
4111 This variable holds the signal names, space separated. The leading
4112 SIG in signal name is removed. A ZERO is prepended to the list.
4113 This is currently not used, sig_name_init is used instead.
4115 sig_name_init (sig_name.U):
4116 This variable holds the signal names, enclosed in double quotes and
4117 separated by commas, suitable for use in the SIG_NAME definition
4118 below. A "ZERO" is prepended to the list, and the list is
4119 terminated with a plain 0. The leading SIG in signal names
4120 is removed. See sig_num.
4122 sig_num (sig_name.U):
4123 This variable holds the signal numbers, space separated. A ZERO is
4124 prepended to the list (corresponding to the fake SIGZERO).
4125 Those numbers correspond to the value of the signal listed
4126 in the same place within the sig_name list.
4127 This is currently not used, sig_num_init is used instead.
4129 sig_num_init (sig_name.U):
4130 This variable holds the signal numbers, enclosed in double quotes and
4131 separated by commas, suitable for use in the SIG_NUM definition
4132 below. A "ZERO" is prepended to the list, and the list is
4133 terminated with a plain 0.
4135 sig_size (sig_name.U):
4136 This variable contains the number of elements of the sig_name
4139 signal_t (d_voidsig.U):
4140 This variable holds the type of the signal handler (void or int).
4142 sitearch (sitearch.U):
4143 This variable contains the eventual value of the SITEARCH symbol,
4144 which is the name of the private library for this package. It may
4145 have a ~ on the front. It is up to the makefile to eventually create
4146 this directory while performing installation (with ~ substitution).
4147 The standard distribution will put nothing in this directory.
4148 After perl has been installed, users may install their own local
4149 architecture-dependent modules in this directory with
4150 MakeMaker Makefile.PL
4151 or equivalent. See INSTALL for details.
4153 sitearchexp (sitearch.U):
4154 This variable is the ~name expanded version of sitearch, so that you
4155 may use it directly in Makefiles or shell scripts.
4157 sitebin (sitebin.U):
4158 This variable holds the name of the directory in which the user wants
4159 to put add-on publicly executable files for the package in question. It
4160 is most often a local directory such as /usr/local/bin. Programs using
4161 this variable must be prepared to deal with ~name substitution.
4162 The standard distribution will put nothing in this directory.
4163 After perl has been installed, users may install their own local
4164 executables in this directory with
4165 MakeMaker Makefile.PL
4166 or equivalent. See INSTALL for details.
4168 sitebinexp (sitebin.U):
4169 This is the same as the sitebin variable, but is filename expanded at
4170 configuration time, for use in your makefiles.
4172 sitehtml1dir (sitehtml1dir.U):
4173 This variable contains the name of the directory in which site-specific
4174 html source pages are to be put. It is the responsibility of the
4175 Makefile.SH to get the value of this into the proper command.
4176 You must be prepared to do the ~name expansion yourself.
4177 The standard distribution will put nothing in this directory.
4178 After perl has been installed, users may install their own local
4179 html pages in this directory with
4180 MakeMaker Makefile.PL
4181 or equivalent. See INSTALL for details.
4183 sitehtml1direxp (sitehtml1dir.U):
4184 This variable is the same as the sitehtml1dir variable, but is filename
4185 expanded at configuration time, for convenient use in makefiles.
4187 sitehtml3dir (sitehtml3dir.U):
4188 This variable contains the name of the directory in which site-specific
4189 library html source pages are to be put. It is the responsibility of the
4190 Makefile.SH to get the value of this into the proper command.
4191 You must be prepared to do the ~name expansion yourself.
4192 The standard distribution will put nothing in this directory.
4193 After perl has been installed, users may install their own local
4194 library html pages in this directory with
4195 MakeMaker Makefile.PL
4196 or equivalent. See INSTALL for details.
4198 sitehtml3direxp (sitehtml3dir.U):
4199 This variable is the same as the sitehtml3dir variable, but is filename
4200 expanded at configuration time, for convenient use in makefiles.
4202 sitelib (sitelib.U):
4203 This variable contains the eventual value of the SITELIB symbol,
4204 which is the name of the private library for this package. It may
4205 have a ~ on the front. It is up to the makefile to eventually create
4206 this directory while performing installation (with ~ substitution).
4207 The standard distribution will put nothing in this directory.
4208 After perl has been installed, users may install their own local
4209 architecture-independent modules in this directory with
4210 MakeMaker Makefile.PL
4211 or equivalent. See INSTALL for details.
4213 sitelib_stem (sitelib.U):
4214 This variable is $sitelibexp with any trailing version-specific component
4215 removed. The elements in inc_version_list (inc_version_list.U) can
4216 be tacked onto this variable to generate a list of directories to search.
4218 sitelibexp (sitelib.U):
4219 This variable is the ~name expanded version of sitelib, so that you
4220 may use it directly in Makefiles or shell scripts.
4222 siteman1dir (siteman1dir.U):
4223 This variable contains the name of the directory in which site-specific
4224 manual source pages are to be put. It is the responsibility of the
4225 Makefile.SH to get the value of this into the proper command.
4226 You must be prepared to do the ~name expansion yourself.
4227 The standard distribution will put nothing in this directory.
4228 After perl has been installed, users may install their own local
4229 man1 pages in this directory with
4230 MakeMaker Makefile.PL
4231 or equivalent. See INSTALL for details.
4233 siteman1direxp (siteman1dir.U):
4234 This variable is the same as the siteman1dir variable, but is filename
4235 expanded at configuration time, for convenient use in makefiles.
4237 siteman3dir (siteman3dir.U):
4238 This variable contains the name of the directory in which site-specific
4239 library man source pages are to be put. It is the responsibility of the
4240 Makefile.SH to get the value of this into the proper command.
4241 You must be prepared to do the ~name expansion yourself.
4242 The standard distribution will put nothing in this directory.
4243 After perl has been installed, users may install their own local
4244 man3 pages in this directory with
4245 MakeMaker Makefile.PL
4246 or equivalent. See INSTALL for details.
4248 siteman3direxp (siteman3dir.U):
4249 This variable is the same as the siteman3dir variable, but is filename
4250 expanded at configuration time, for convenient use in makefiles.
4252 siteprefix (siteprefix.U):
4253 This variable holds the full absolute path of the directory below
4254 which the user will install add-on packages.
4255 See INSTALL for usage and examples.
4257 siteprefixexp (siteprefix.U):
4258 This variable holds the full absolute path of the directory below
4259 which the user will install add-on packages. Derived from siteprefix.
4261 sitescript (sitescript.U):
4262 This variable holds the name of the directory in which the user wants
4263 to put add-on publicly executable files for the package in question. It
4264 is most often a local directory such as /usr/local/bin. Programs using
4265 this variable must be prepared to deal with ~name substitution.
4266 The standard distribution will put nothing in this directory.
4267 After perl has been installed, users may install their own local
4268 scripts in this directory with
4269 MakeMaker Makefile.PL
4270 or equivalent. See INSTALL for details.
4272 sitescriptexp (sitescript.U):
4273 This is the same as the sitescript variable, but is filename expanded at
4274 configuration time, for use in your makefiles.
4276 sizesize (sizesize.U):
4277 This variable contains the size of a sizetype in bytes.
4279 sizetype (sizetype.U):
4280 This variable defines sizetype to be something like size_t,
4281 unsigned long, or whatever type is used to declare length
4282 parameters for string functions.
4285 This variable is defined but not used by Configure.
4286 The value is a plain '' and is not useful.
4289 This variable is defined but not used by Configure.
4290 The value is a plain '' and is not useful.
4293 This variable holds the extension used to identify shared libraries
4294 (also known as shared objects) on the system. Usually set to 'so'.
4296 sockethdr (d_socket.U):
4297 This variable has any cpp '-I' flags needed for socket support.
4299 socketlib (d_socket.U):
4300 This variable has the names of any libraries needed for socket support.
4302 socksizetype (socksizetype.U):
4303 This variable holds the type used for the size argument
4304 for various socket calls like accept. Usual values include
4305 socklen_t, size_t, and int.
4308 This variable is used internally by Configure to determine the
4309 full pathname (if any) of the sort program. After Configure runs,
4310 the value is reset to a plain "sort" and is not useful.
4312 spackage (package.U):
4313 This variable contains the name of the package being constructed,
4314 with the first letter uppercased, i.e. suitable for starting
4317 spitshell (spitshell.U):
4318 This variable contains the command necessary to spit out a runnable
4319 shell on this system. It is either cat or a grep '-v' for # comments.
4321 sPRId64 (quadfio.U):
4322 This variable, if defined, contains the string used by stdio to
4323 format 64-bit decimal numbers (format 'd') for output.
4325 sPRIeldbl (longdblfio.U):
4326 This variable, if defined, contains the string used by stdio to
4327 format long doubles (format 'e') for output.
4329 sPRIEUldbl (longdblfio.U):
4330 This variable, if defined, contains the string used by stdio to
4331 format long doubles (format 'E') for output.
4332 The 'U' in the name is to separate this from sPRIeldbl so that even
4333 case-blind systems can see the difference.
4335 sPRIfldbl (longdblfio.U):
4336 This variable, if defined, contains the string used by stdio to
4337 format long doubles (format 'f') for output.
4339 sPRIFUldbl (longdblfio.U):
4340 This variable, if defined, contains the string used by stdio to
4341 format long doubles (format 'F') for output.
4342 The 'U' in the name is to separate this from sPRIfldbl so that even
4343 case-blind systems can see the difference.
4345 sPRIgldbl (longdblfio.U):
4346 This variable, if defined, contains the string used by stdio to
4347 format long doubles (format 'g') for output.
4349 sPRIGUldbl (longdblfio.U):
4350 This variable, if defined, contains the string used by stdio to
4351 format long doubles (format 'G') for output.
4352 The 'U' in the name is to separate this from sPRIgldbl so that even
4353 case-blind systems can see the difference.
4355 sPRIi64 (quadfio.U):
4356 This variable, if defined, contains the string used by stdio to
4357 format 64-bit decimal numbers (format 'i') for output.
4359 sPRIo64 (quadfio.U):
4360 This variable, if defined, contains the string used by stdio to
4361 format 64-bit octal numbers (format 'o') for output.
4363 sPRIu64 (quadfio.U):
4364 This variable, if defined, contains the string used by stdio to
4365 format 64-bit unsigned decimal numbers (format 'u') for output.
4367 sPRIx64 (quadfio.U):
4368 This variable, if defined, contains the string used by stdio to
4369 format 64-bit hexadecimal numbers (format 'x') for output.
4371 sPRIXU64 (quadfio.U):
4372 This variable, if defined, contains the string used by stdio to
4373 format 64-bit hExADECimAl numbers (format 'X') for output.
4374 The 'U' in the name is to separate this from sPRIx64 so that even
4375 case-blind systems can see the difference.
4377 srand48_r_proto (d_srand48_r.U):
4378 This variable encodes the prototype of srand48_r.
4379 It is zero if d_srand48_r is undef, and one of the
4380 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4383 srandom_r_proto (d_srandom_r.U):
4384 This variable encodes the prototype of srandom_r.
4385 It is zero if d_srandom_r is undef, and one of the
4386 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4390 This variable holds the path to the package source. It is up to
4391 the Makefile to use this variable and set VPATH accordingly to
4392 find the sources remotely.
4394 sSCNfldbl (longdblfio.U):
4395 This variable, if defined, contains the string used by stdio to
4396 format long doubles (format 'f') for input.
4398 ssizetype (ssizetype.U):
4399 This variable defines ssizetype to be something like ssize_t,
4400 long or int. It is used by functions that return a count
4401 of bytes or an error condition. It must be a signed type.
4402 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4404 startperl (startperl.U):
4405 This variable contains the string to put on the front of a perl
4406 script to make sure (hopefully) that it runs with perl and not some
4407 shell. Of course, that leading line must be followed by the classical
4409 eval 'exec perl -S $0 ${1+"$@"}'
4410 if $running_under_some_shell;
4411 to guarantee perl startup should the shell execute the script. Note
4412 that this magic incatation is not understood by csh.
4414 startsh (startsh.U):
4415 This variable contains the string to put on the front of a shell
4416 script to make sure (hopefully) that it runs with sh and not some
4419 static_ext (Extensions.U):
4420 This variable holds a list of XS extension files we want to
4421 link statically into the package. It is used by Makefile.
4423 stdchar (stdchar.U):
4424 This variable conditionally defines STDCHAR to be the type of char
4425 used in stdio.h. It has the values "unsigned char" or "char".
4427 stdio_base (d_stdstdio.U):
4428 This variable defines how, given a FILE pointer, fp, to access the
4429 _base field (or equivalent) of stdio.h's FILE structure. This will
4430 be used to define the macro FILE_base(fp).
4432 stdio_bufsiz (d_stdstdio.U):
4433 This variable defines how, given a FILE pointer, fp, to determine
4434 the number of bytes store in the I/O buffer pointer to by the
4435 _base field (or equivalent) of stdio.h's FILE structure. This will
4436 be used to define the macro FILE_bufsiz(fp).
4438 stdio_cnt (d_stdstdio.U):
4439 This variable defines how, given a FILE pointer, fp, to access the
4440 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4441 be used to define the macro FILE_cnt(fp).
4443 stdio_filbuf (d_stdstdio.U):
4444 This variable defines how, given a FILE pointer, fp, to tell
4445 stdio to refill its internal buffers (?). This will
4446 be used to define the macro FILE_filbuf(fp).
4448 stdio_ptr (d_stdstdio.U):
4449 This variable defines how, given a FILE pointer, fp, to access the
4450 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4451 be used to define the macro FILE_ptr(fp).
4453 stdio_stream_array (stdio_streams.U):
4454 This variable tells the name of the array holding the stdio streams.
4455 Usual values include _iob, __iob, and __sF.
4457 strerror_r_proto (d_strerror_r.U):
4458 This variable encodes the prototype of strerror_r.
4459 It is zero if d_strerror_r is undef, and one of the
4460 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4463 strings (i_string.U):
4464 This variable holds the full path of the string header that will be
4465 used. Typically /usr/include/string.h or /usr/include/strings.h.
4468 This variable is defined but not used by Configure.
4469 The value is a plain '' and is not useful.
4471 subversion (patchlevel.U):
4472 The subversion level of this package.
4473 The value of subversion comes from the patchlevel.h file.
4474 In a version number such as 5.6.1, this is the "1".
4475 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4476 This is unique to perl.
4479 This variable holds the place where the manual is located on this
4480 system. It is not the place where the user wants to put his manual
4481 pages. Rather it is the place where Configure may look to find manual
4482 for unix commands (section 1 of the manual usually). See mansrc.
4485 This variable is defined but not used by Configure.
4486 The value is a plain '' and is not useful.
4489 This variable is defined but not used by Configure.
4490 The value is a plain '' and is not useful.
4492 targetarch (Cross.U):
4493 If cross-compiling, this variable contains the target architecture.
4494 If not, this will be empty.
4497 This variable is defined but not used by Configure.
4498 The value is a plain '' and is not useful.
4501 This variable is defined but not used by Configure.
4502 The value is a plain '' and is not useful.
4505 This variable is used internally by Configure to determine the
4506 full pathname (if any) of the test program. After Configure runs,
4507 the value is reset to a plain "test" and is not useful.
4509 timeincl (i_time.U):
4510 This variable holds the full path of the included time header(s).
4512 timetype (d_time.U):
4513 This variable holds the type returned by time(). It can be long,
4514 or time_t on BSD sites (in which case <sys/types.h> should be
4515 included). Anyway, the type Time_t should be used.
4517 tmpnam_r_proto (d_tmpnam_r.U):
4518 This variable encodes the prototype of tmpnam_r.
4519 It is zero if d_tmpnam_r is undef, and one of the
4520 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4524 This variable contains the command used by Configure
4525 to copy to from the target host. Useful and available
4526 only during Perl build.
4527 The string ':' if not cross-compiling.
4530 This variable is used internally by Configure to determine the
4531 full pathname (if any) of the touch program. After Configure runs,
4532 the value is reset to a plain "touch" and is not useful.
4535 This variable is used internally by Configure to determine the
4536 full pathname (if any) of the tr program. After Configure runs,
4537 the value is reset to a plain "tr" and is not useful.
4540 This variable contains the value to be passed to the tr(1)
4541 command to transliterate a newline. Typical values are
4542 '\012' and '\n'. This is needed for EBCDIC systems where
4543 newline is not necessarily '\012'.
4546 This variable is defined but not used by Configure.
4547 The value is a plain '' and is not useful.
4549 ttyname_r_proto (d_ttyname_r.U):
4550 This variable encodes the prototype of ttyname_r.
4551 It is zero if d_ttyname_r is undef, and one of the
4552 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4556 This variable is the size of an U16 in bytes.
4559 This variable contains the C type used for Perl's U16.
4562 This variable is the size of an U32 in bytes.
4565 This variable contains the C type used for Perl's U32.
4568 This variable is the size of an U64 in bytes.
4571 This variable contains the C type used for Perl's U64.
4574 This variable is the size of an U8 in bytes.
4577 This variable contains the C type used for Perl's U8.
4580 This variable contains the format string used for printing a Uid_t.
4582 uidsign (uidsign.U):
4583 This variable contains the signedness of a uidtype.
4584 1 for unsigned, -1 for signed.
4586 uidsize (uidsize.U):
4587 This variable contains the size of a uidtype in bytes.
4589 uidtype (uidtype.U):
4590 This variable defines Uid_t to be something like uid_t, int,
4591 ushort, or whatever type is used to declare user ids in the kernel.
4594 This variable is used internally by Configure to determine the
4595 full pathname (if any) of the uname program. After Configure runs,
4596 the value is reset to a plain "uname" and is not useful.
4599 This variable is used internally by Configure to determine the
4600 full pathname (if any) of the uniq program. After Configure runs,
4601 the value is reset to a plain "uniq" and is not useful.
4603 uquadtype (quadtype.U):
4604 This variable defines Uquad_t to be something like unsigned long,
4605 unsigned int, unsigned long long, uint64_t, or whatever type is
4606 used for 64-bit integers.
4608 use5005threads (usethreads.U):
4609 This variable conditionally defines the USE_5005THREADS symbol,
4610 and indicates that Perl should be built to use the 5.005-based
4611 threading implementation.
4613 use64bitall (use64bits.U):
4614 This variable conditionally defines the USE_64_BIT_ALL symbol,
4615 and indicates that 64-bit integer types should be used
4616 when available. The maximal possible
4617 64-bitness is employed: LP64 or ILP64, meaning that you will
4618 be able to use more than 2 gigabytes of memory. This mode is
4619 even more binary incompatible than USE_64_BIT_INT. You may not
4620 be able to run the resulting executable in a 32-bit CPU at all or
4621 you may need at least to reboot your OS to 64-bit mode.
4623 use64bitint (use64bits.U):
4624 This variable conditionally defines the USE_64_BIT_INT symbol,
4625 and indicates that 64-bit integer types should be used
4626 when available. The minimal possible 64-bitness
4627 is employed, just enough to get 64-bit integers into Perl.
4628 This may mean using for example "long longs", while your memory
4629 may still be limited to 2 gigabytes.
4631 usecrosscompile (Cross.U):
4632 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4633 and indicates that Perl has been cross-compiled.
4636 This variable indicates if the system supports dynamic
4637 loading of some sort. See also dlsrc and dlobj.
4639 usefaststdio (usefaststdio.U):
4640 This variable conditionally defines the USE_FAST_STDIO symbol,
4641 and indicates that Perl should be built to use 'fast stdio'.
4642 Defaults to define in Perls 5.8 and earlier, to undef later.
4644 useithreads (usethreads.U):
4645 This variable conditionally defines the USE_ITHREADS symbol,
4646 and indicates that Perl should be built to use the interpreter-based
4647 threading implementation.
4649 uselargefiles (uselfs.U):
4650 This variable conditionally defines the USE_LARGE_FILES symbol,
4651 and indicates that large file interfaces should be used when
4654 uselongdouble (uselongdbl.U):
4655 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4656 and indicates that long doubles should be used when available.
4658 usemallocwrap (mallocsrc.U):
4659 This variable contains y if we are wrapping malloc to prevent
4660 integer overflow during size calculations.
4662 usemorebits (usemorebits.U):
4663 This variable conditionally defines the USE_MORE_BITS symbol,
4664 and indicates that explicit 64-bit interfaces and long doubles
4665 should be used when available.
4667 usemultiplicity (usemultiplicity.U):
4668 This variable conditionally defines the MULTIPLICITY symbol,
4669 and indicates that Perl should be built to use multiplicity.
4671 usemymalloc (mallocsrc.U):
4672 This variable contains y if the malloc that comes with this package
4673 is desired over the system's version of malloc. People often include
4674 special versions of malloc for effiency, but such versions are often
4675 less portable. See also mallocsrc and mallocobj.
4676 If this is 'y', then -lmalloc is removed from $libs.
4679 This variable contains 'true' or 'false' depending whether the
4680 nm extraction is wanted or not.
4682 useopcode (Extensions.U):
4683 This variable holds either 'true' or 'false' to indicate
4684 whether the Opcode extension should be used. The sole
4685 use for this currently is to allow an easy mechanism
4686 for users to skip the Opcode extension from the Configure
4689 useperlio (useperlio.U):
4690 This variable conditionally defines the USE_PERLIO symbol,
4691 and indicates that the PerlIO abstraction should be
4694 useposix (Extensions.U):
4695 This variable holds either 'true' or 'false' to indicate
4696 whether the POSIX extension should be used. The sole
4697 use for this currently is to allow an easy mechanism
4698 for hints files to indicate that POSIX will not compile
4699 on a particular system.
4701 usereentrant (usethreads.U):
4702 This variable conditionally defines the USE_REENTRANT_API symbol,
4703 which indicates that the thread code may try to use the various
4704 _r versions of library functions. This is only potentially
4705 meaningful if usethreads is set and is very experimental, it is
4706 not even prompted for.
4708 userelocatableinc (XXX.U):
4709 This variable is set to true to indicate that perl should relocate
4710 @INC entries at runtime based on the path to the perl binary.
4711 Any @INC paths starting ".../" are relocated relative to the directory
4712 containing the perl binary, and a logical cleanup of the path is then
4713 made around the join point (removing "dir/../" pairs)
4716 This variable is set to true when the user agrees to use sfio.
4717 It is set to false when sfio is not available or when the user
4718 explicitely requests not to use sfio. It is here primarily so
4719 that command-line settings can override the auto-detection of
4720 d_sfio without running into a "WHOA THERE".
4722 useshrplib (libperl.U):
4723 This variable is set to 'true' if the user wishes
4724 to build a shared libperl, and 'false' otherwise.
4726 usesocks (usesocks.U):
4727 This variable conditionally defines the USE_SOCKS symbol,
4728 and indicates that Perl should be built to use SOCKS.
4730 usethreads (usethreads.U):
4731 This variable conditionally defines the USE_THREADS symbol,
4732 and indicates that Perl should be built to use threads.
4734 usevendorprefix (vendorprefix.U):
4735 This variable tells whether the vendorprefix
4736 and consequently other vendor* paths are in use.
4738 usevfork (d_vfork.U):
4739 This variable is set to true when the user accepts to use vfork.
4740 It is set to false when no vfork is available or when the user
4741 explicitely requests not to use vfork.
4744 This variable holds the path of the include files, which is
4745 usually /usr/include. It is mainly used by other Configure units.
4748 This variable is defined but not used by Configure.
4749 The value is a plain '' and is not useful.
4751 uvoformat (perlxvf.U):
4752 This variable contains the format string used for printing
4753 a Perl UV as an unsigned octal integer.
4756 This variable is the size of a UV in bytes.
4759 This variable contains the C type used for Perl's UV.
4761 uvuformat (perlxvf.U):
4762 This variable contains the format string used for printing
4763 a Perl UV as an unsigned decimal integer.
4765 uvxformat (perlxvf.U):
4766 This variable contains the format string used for printing
4767 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4769 uvXUformat (perlxvf.U):
4770 This variable contains the format string used for printing
4771 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4773 vendorarch (vendorarch.U):
4774 This variable contains the value of the PERL_VENDORARCH symbol.
4775 It may have a ~ on the front.
4776 The standard distribution will put nothing in this directory.
4777 Vendors who distribute perl may wish to place their own
4778 architecture-dependent modules and extensions in this directory with
4779 MakeMaker Makefile.PL INSTALLDIRS=vendor
4780 or equivalent. See INSTALL for details.
4782 vendorarchexp (vendorarch.U):
4783 This variable is the ~name expanded version of vendorarch, so that you
4784 may use it directly in Makefiles or shell scripts.
4786 vendorbin (vendorbin.U):
4787 This variable contains the eventual value of the VENDORBIN symbol.
4788 It may have a ~ on the front.
4789 The standard distribution will put nothing in this directory.
4790 Vendors who distribute perl may wish to place additional
4791 binaries in this directory with
4792 MakeMaker Makefile.PL INSTALLDIRS=vendor
4793 or equivalent. See INSTALL for details.
4795 vendorbinexp (vendorbin.U):
4796 This variable is the ~name expanded version of vendorbin, so that you
4797 may use it directly in Makefiles or shell scripts.
4799 vendorhtml1dir (vendorhtml1dir.U):
4800 This variable contains the name of the directory for html
4801 pages. It may have a ~ on the front.
4802 The standard distribution will put nothing in this directory.
4803 Vendors who distribute perl may wish to place their own
4804 html pages in this directory with
4805 MakeMaker Makefile.PL INSTALLDIRS=vendor
4806 or equivalent. See INSTALL for details.
4808 vendorhtml1direxp (vendorhtml1dir.U):
4809 This variable is the ~name expanded version of vendorhtml1dir, so that you
4810 may use it directly in Makefiles or shell scripts.
4812 vendorhtml3dir (vendorhtml3dir.U):
4813 This variable contains the name of the directory for html
4814 library pages. It may have a ~ on the front.
4815 The standard distribution will put nothing in this directory.
4816 Vendors who distribute perl may wish to place their own
4817 html pages for modules and extensions in this directory with
4818 MakeMaker Makefile.PL INSTALLDIRS=vendor
4819 or equivalent. See INSTALL for details.
4821 vendorhtml3direxp (vendorhtml3dir.U):
4822 This variable is the ~name expanded version of vendorhtml3dir, so that you
4823 may use it directly in Makefiles or shell scripts.
4825 vendorlib (vendorlib.U):
4826 This variable contains the eventual value of the VENDORLIB symbol,
4827 which is the name of the private library for this package.
4828 The standard distribution will put nothing in this directory.
4829 Vendors who distribute perl may wish to place their own
4830 modules in this directory with
4831 MakeMaker Makefile.PL INSTALLDIRS=vendor
4832 or equivalent. See INSTALL for details.
4834 vendorlib_stem (vendorlib.U):
4835 This variable is $vendorlibexp with any trailing version-specific component
4836 removed. The elements in inc_version_list (inc_version_list.U) can
4837 be tacked onto this variable to generate a list of directories to search.
4839 vendorlibexp (vendorlib.U):
4840 This variable is the ~name expanded version of vendorlib, so that you
4841 may use it directly in Makefiles or shell scripts.
4843 vendorman1dir (vendorman1dir.U):
4844 This variable contains the name of the directory for man1
4845 pages. It may have a ~ on the front.
4846 The standard distribution will put nothing in this directory.
4847 Vendors who distribute perl may wish to place their own
4848 man1 pages in this directory with
4849 MakeMaker Makefile.PL INSTALLDIRS=vendor
4850 or equivalent. See INSTALL for details.
4852 vendorman1direxp (vendorman1dir.U):
4853 This variable is the ~name expanded version of vendorman1dir, so that you
4854 may use it directly in Makefiles or shell scripts.
4856 vendorman3dir (vendorman3dir.U):
4857 This variable contains the name of the directory for man3
4858 pages. It may have a ~ on the front.
4859 The standard distribution will put nothing in this directory.
4860 Vendors who distribute perl may wish to place their own
4861 man3 pages in this directory with
4862 MakeMaker Makefile.PL INSTALLDIRS=vendor
4863 or equivalent. See INSTALL for details.
4865 vendorman3direxp (vendorman3dir.U):
4866 This variable is the ~name expanded version of vendorman3dir, so that you
4867 may use it directly in Makefiles or shell scripts.
4869 vendorprefix (vendorprefix.U):
4870 This variable holds the full absolute path of the directory below
4871 which the vendor will install add-on packages.
4872 See INSTALL for usage and examples.
4874 vendorprefixexp (vendorprefix.U):
4875 This variable holds the full absolute path of the directory below
4876 which the vendor will install add-on packages. Derived from vendorprefix.
4878 vendorscript (vendorscript.U):
4879 This variable contains the eventual value of the VENDORSCRIPT symbol.
4880 It may have a ~ on the front.
4881 The standard distribution will put nothing in this directory.
4882 Vendors who distribute perl may wish to place additional
4883 executable scripts in this directory with
4884 MakeMaker Makefile.PL INSTALLDIRS=vendor
4885 or equivalent. See INSTALL for details.
4887 vendorscriptexp (vendorscript.U):
4888 This variable is the ~name expanded version of vendorscript, so that you
4889 may use it directly in Makefiles or shell scripts.
4891 version (patchlevel.U):
4892 The full version number of this package, such as 5.6.1 (or 5_6_1).
4893 This combines revision, patchlevel, and subversion to get the
4894 full version number, including any possible subversions.
4895 This is suitable for use as a directory name, and hence is
4896 filesystem dependent.
4898 version_patchlevel_string (patchlevel.U):
4899 This is a string combining version, subversion and
4900 perl_patchlevel (if perl_patchlevel is non-zero).
4901 It is typically something like
4902 'version 7 subversion 1' or
4903 'version 7 subversion 1 patchlevel 11224'
4904 It is computed here to avoid duplication of code in myconfig.SH
4907 versiononly (versiononly.U):
4908 If set, this symbol indicates that only the version-specific
4909 components of a perl installation should be installed.
4910 This may be useful for making a test installation of a new
4911 version without disturbing the existing installation.
4912 Setting versiononly is equivalent to setting installperl's -v option.
4913 In particular, the non-versioned scripts and programs such as
4914 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
4915 (see INSTALL for a more complete list). Nor are the man
4917 Usually, this is undef.
4920 This variable is defined but not used by Configure.
4921 The value is a plain '' and is not useful.
4923 voidflags (voidflags.U):
4924 This variable contains the eventual value of the VOIDFLAGS symbol,
4925 which indicates how much support of the void type is given by this
4926 compiler. See VOIDFLAGS for more info.
4929 This variable holds extra path (space-separated) used to find
4930 libraries on this platform, for example CPU-specific libraries
4931 (on multi-CPU platforms) may be listed here.
4934 This variable holds the name of the compiler compiler we
4935 want to use in the Makefile. It can be yacc, byacc, or bison -y.
4938 This variable contains any additional yacc flags desired by the
4939 user. It is up to the Makefile to use this.
4942 This variable is defined but not used by Configure.
4943 The value is a plain '' and is not useful.
4946 This variable is used internally by Configure to determine the
4947 full pathname (if any) of the zip program. After Configure runs,
4948 the value is reset to a plain "zip" and is not useful.