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_mblen (d_mblen.U):
1219 This variable conditionally defines the HAS_MBLEN symbol, which
1220 indicates to the C program that the mblen() routine is available
1221 to find the number of bytes in a multibye character.
1223 d_mbstowcs (d_mbstowcs.U):
1224 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1225 indicates to the C program that the mbstowcs() routine is available
1226 to convert a multibyte string into a wide character string.
1228 d_mbtowc (d_mbtowc.U):
1229 This variable conditionally defines the HAS_MBTOWC symbol, which
1230 indicates to the C program that the mbtowc() routine is available
1231 to convert multibyte to a wide character.
1233 d_memchr (d_memchr.U):
1234 This variable conditionally defines the HAS_MEMCHR symbol, which
1235 indicates to the C program that the memchr() routine is available
1236 to locate characters within a C string.
1238 d_memcmp (d_memcmp.U):
1239 This variable conditionally defines the HAS_MEMCMP symbol, which
1240 indicates to the C program that the memcmp() routine is available
1241 to compare blocks of memory.
1243 d_memcpy (d_memcpy.U):
1244 This variable conditionally defines the HAS_MEMCPY symbol, which
1245 indicates to the C program that the memcpy() routine is available
1246 to copy blocks of memory.
1248 d_memmove (d_memmove.U):
1249 This variable conditionally defines the HAS_MEMMOVE symbol, which
1250 indicates to the C program that the memmove() routine is available
1251 to copy potentatially overlapping blocks of memory.
1253 d_memset (d_memset.U):
1254 This variable conditionally defines the HAS_MEMSET symbol, which
1255 indicates to the C program that the memset() routine is available
1256 to set blocks of memory.
1258 d_mkdir (d_mkdir.U):
1259 This variable conditionally defines the HAS_MKDIR symbol, which
1260 indicates to the C program that the mkdir() routine is available
1261 to create directories..
1263 d_mkdtemp (d_mkdtemp.U):
1264 This variable conditionally defines the HAS_MKDTEMP symbol, which
1265 indicates to the C program that the mkdtemp() routine is available
1266 to exclusively create a uniquely named temporary directory.
1268 d_mkfifo (d_mkfifo.U):
1269 This variable conditionally defines the HAS_MKFIFO symbol, which
1270 indicates to the C program that the mkfifo() routine is available.
1272 d_mkstemp (d_mkstemp.U):
1273 This variable conditionally defines the HAS_MKSTEMP symbol, which
1274 indicates to the C program that the mkstemp() routine is available
1275 to exclusively create and open a uniquely named temporary file.
1277 d_mkstemps (d_mkstemps.U):
1278 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1279 indicates to the C program that the mkstemps() routine is available
1280 to exclusively create and open a uniquely named (with a suffix)
1283 d_mktime (d_mktime.U):
1284 This variable conditionally defines the HAS_MKTIME symbol, which
1285 indicates to the C program that the mktime() routine is available.
1288 This variable conditionally defines HAS_MMAP if mmap() is
1289 available to map a file into memory.
1291 d_modfl (d_modfl.U):
1292 This variable conditionally defines the HAS_MODFL symbol, which
1293 indicates to the C program that the modfl() routine is available.
1295 d_modfl_pow32_bug (d_modfl.U):
1296 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1297 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1298 For example from 4294967303.150000 one would get 4294967302.000000
1299 and 1.150000. The bug has been seen in certain versions of glibc,
1300 release 2.2.2 is known to be okay.
1302 d_modflproto (d_modfl.U):
1303 This symbol, if defined, indicates that the system provides
1304 a prototype for the modfl() function. Otherwise, it is up
1305 to the program to supply one. C99 says it should be
1306 long double modfl(long double, long double *);
1308 d_mprotect (d_mprotect.U):
1309 This variable conditionally defines HAS_MPROTECT if mprotect() is
1310 available to modify the access protection of a memory mapped file.
1313 This variable conditionally defines the HAS_MSG symbol, which
1314 indicates that the entire msg*(2) library is present.
1316 d_msg_ctrunc (d_socket.U):
1317 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1318 which indicates that the MSG_CTRUNC is available. #ifdef is
1319 not enough because it may be an enum, glibc has been known to do this.
1321 d_msg_dontroute (d_socket.U):
1322 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1323 which indicates that the MSG_DONTROUTE is available. #ifdef is
1324 not enough because it may be an enum, glibc has been known to do this.
1326 d_msg_oob (d_socket.U):
1327 This variable conditionally defines the HAS_MSG_OOB symbol,
1328 which indicates that the MSG_OOB is available. #ifdef is
1329 not enough because it may be an enum, glibc has been known to do this.
1331 d_msg_peek (d_socket.U):
1332 This variable conditionally defines the HAS_MSG_PEEK symbol,
1333 which indicates that the MSG_PEEK is available. #ifdef is
1334 not enough because it may be an enum, glibc has been known to do this.
1336 d_msg_proxy (d_socket.U):
1337 This variable conditionally defines the HAS_MSG_PROXY symbol,
1338 which indicates that the MSG_PROXY is available. #ifdef is
1339 not enough because it may be an enum, glibc has been known to do this.
1341 d_msgctl (d_msgctl.U):
1342 This variable conditionally defines the HAS_MSGCTL symbol, which
1343 indicates to the C program that the msgctl() routine is available.
1345 d_msgget (d_msgget.U):
1346 This variable conditionally defines the HAS_MSGGET symbol, which
1347 indicates to the C program that the msgget() routine is available.
1349 d_msghdr_s (d_msghdr_s.U):
1350 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1351 which indicates that the struct msghdr is supported.
1353 d_msgrcv (d_msgrcv.U):
1354 This variable conditionally defines the HAS_MSGRCV symbol, which
1355 indicates to the C program that the msgrcv() routine is available.
1357 d_msgsnd (d_msgsnd.U):
1358 This variable conditionally defines the HAS_MSGSND symbol, which
1359 indicates to the C program that the msgsnd() routine is available.
1361 d_msync (d_msync.U):
1362 This variable conditionally defines HAS_MSYNC if msync() is
1363 available to synchronize a mapped file.
1365 d_munmap (d_munmap.U):
1366 This variable conditionally defines HAS_MUNMAP if munmap() is
1367 available to unmap a region mapped by mmap().
1369 d_mymalloc (mallocsrc.U):
1370 This variable conditionally defines MYMALLOC in case other parts
1371 of the source want to take special action if MYMALLOC is used.
1372 This may include different sorts of profiling or error detection.
1375 This variable conditionally defines the HAS_NICE symbol, which
1376 indicates to the C program that the nice() routine is available.
1378 d_nl_langinfo (d_nl_langinfo.U):
1379 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1380 indicates to the C program that the nl_langinfo() routine is available.
1382 d_nv_preserves_uv (perlxv.U):
1383 This variable indicates whether a variable of type nvtype
1384 can preserve all the bits a variable of type uvtype.
1386 d_nv_zero_is_allbits_zero (perlxv.U):
1387 This variable indicates whether a variable of type nvtype
1388 stores 0.0 in memory as all bits zero.
1390 d_off64_t (d_off64_t.U):
1391 This symbol will be defined if the C compiler supports off64_t.
1393 d_old_pthread_create_joinable (d_pthrattrj.U):
1394 This variable conditionally defines pthread_create_joinable.
1395 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1397 d_oldpthreads (usethreads.U):
1398 This variable conditionally defines the OLD_PTHREADS_API symbol,
1399 and indicates that Perl should be built to use the old
1400 draft POSIX threads API. This is only potentially meaningful if
1403 d_oldsock (d_socket.U):
1404 This variable conditionally defines the OLDSOCKET symbol, which
1405 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1407 d_open3 (d_open3.U):
1408 This variable conditionally defines the HAS_OPEN3 manifest constant,
1409 which indicates to the C program that the 3 argument version of
1410 the open(2) function is available.
1412 d_pathconf (d_pathconf.U):
1413 This variable conditionally defines the HAS_PATHCONF symbol, which
1414 indicates to the C program that the pathconf() routine is available
1415 to determine file-system related limits and options associated
1416 with a given filename.
1418 d_pause (d_pause.U):
1419 This variable conditionally defines the HAS_PAUSE symbol, which
1420 indicates to the C program that the pause() routine is available
1421 to suspend a process until a signal is received.
1423 d_perl_otherlibdirs (otherlibdirs.U):
1424 This variable conditionally defines PERL_OTHERLIBDIRS, which
1425 contains a colon-separated set of paths for the perl binary to
1426 include in @INC. See also otherlibdirs.
1428 d_phostname (d_gethname.U):
1429 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1430 contains the shell command which, when fed to popen(), may be
1431 used to derive the host name.
1434 This variable conditionally defines the HAS_PIPE symbol, which
1435 indicates to the C program that the pipe() routine is available
1436 to create an inter-process channel.
1439 This variable conditionally defines the HAS_POLL symbol, which
1440 indicates to the C program that the poll() routine is available
1441 to poll active file descriptors.
1443 d_portable (d_portable.U):
1444 This variable conditionally defines the PORTABLE symbol, which
1445 indicates to the C program that it should not assume that it is
1446 running on the machine it was compiled on.
1448 d_PRId64 (quadfio.U):
1449 This variable conditionally defines the PERL_PRId64 symbol, which
1450 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1452 d_PRIeldbl (longdblfio.U):
1453 This variable conditionally defines the PERL_PRIfldbl symbol, which
1454 indiciates that stdio has a symbol to print long doubles.
1456 d_PRIEUldbl (longdblfio.U):
1457 This variable conditionally defines the PERL_PRIfldbl symbol, which
1458 indiciates that stdio has a symbol to print long doubles.
1459 The 'U' in the name is to separate this from d_PRIeldbl so that even
1460 case-blind systems can see the difference.
1462 d_PRIfldbl (longdblfio.U):
1463 This variable conditionally defines the PERL_PRIfldbl symbol, which
1464 indiciates that stdio has a symbol to print long doubles.
1466 d_PRIFUldbl (longdblfio.U):
1467 This variable conditionally defines the PERL_PRIfldbl symbol, which
1468 indiciates that stdio has a symbol to print long doubles.
1469 The 'U' in the name is to separate this from d_PRIfldbl so that even
1470 case-blind systems can see the difference.
1472 d_PRIgldbl (longdblfio.U):
1473 This variable conditionally defines the PERL_PRIfldbl symbol, which
1474 indiciates that stdio has a symbol to print long doubles.
1476 d_PRIGUldbl (longdblfio.U):
1477 This variable conditionally defines the PERL_PRIfldbl symbol, which
1478 indiciates that stdio has a symbol to print long doubles.
1479 The 'U' in the name is to separate this from d_PRIgldbl so that even
1480 case-blind systems can see the difference.
1482 d_PRIi64 (quadfio.U):
1483 This variable conditionally defines the PERL_PRIi64 symbol, which
1484 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1486 d_PRIo64 (quadfio.U):
1487 This variable conditionally defines the PERL_PRIo64 symbol, which
1488 indiciates that stdio has a symbol to print 64-bit octal numbers.
1490 d_PRIu64 (quadfio.U):
1491 This variable conditionally defines the PERL_PRIu64 symbol, which
1492 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1495 d_PRIx64 (quadfio.U):
1496 This variable conditionally defines the PERL_PRIx64 symbol, which
1497 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1499 d_PRIXU64 (quadfio.U):
1500 This variable conditionally defines the PERL_PRIXU64 symbol, which
1501 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1502 The 'U' in the name is to separate this from d_PRIx64 so that even
1503 case-blind systems can see the difference.
1505 d_procselfexe (d_procselfexe.U):
1506 Defined if $procselfexe is symlink to the absolute
1507 pathname of the executing program.
1509 d_pthread_atfork (d_pthread_atfork.U):
1510 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1511 which indicates to the C program that the pthread_atfork()
1512 routine is available.
1514 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1515 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1516 pthread_attr_setscope() is available to set the contention scope
1517 attribute of a thread attribute object.
1519 d_pthread_yield (d_pthread_y.U):
1520 This variable conditionally defines the HAS_PTHREAD_YIELD
1521 symbol if the pthread_yield routine is available to yield
1522 the execution of the current thread.
1525 This variable conditionally defines PWAGE, which indicates
1526 that struct passwd contains pw_age.
1528 d_pwchange (i_pwd.U):
1529 This variable conditionally defines PWCHANGE, which indicates
1530 that struct passwd contains pw_change.
1532 d_pwclass (i_pwd.U):
1533 This variable conditionally defines PWCLASS, which indicates
1534 that struct passwd contains pw_class.
1536 d_pwcomment (i_pwd.U):
1537 This variable conditionally defines PWCOMMENT, which indicates
1538 that struct passwd contains pw_comment.
1540 d_pwexpire (i_pwd.U):
1541 This variable conditionally defines PWEXPIRE, which indicates
1542 that struct passwd contains pw_expire.
1544 d_pwgecos (i_pwd.U):
1545 This variable conditionally defines PWGECOS, which indicates
1546 that struct passwd contains pw_gecos.
1548 d_pwpasswd (i_pwd.U):
1549 This variable conditionally defines PWPASSWD, which indicates
1550 that struct passwd contains pw_passwd.
1552 d_pwquota (i_pwd.U):
1553 This variable conditionally defines PWQUOTA, which indicates
1554 that struct passwd contains pw_quota.
1556 d_qgcvt (d_qgcvt.U):
1557 This variable conditionally defines the HAS_QGCVT symbol, which
1558 indicates to the C program that the qgcvt() routine is available.
1560 d_quad (quadtype.U):
1561 This variable, if defined, tells that there's a 64-bit integer type,
1564 d_random_r (d_random_r.U):
1565 This variable conditionally defines the HAS_RANDOM_R symbol,
1566 which indicates to the C program that the random_r()
1567 routine is available.
1569 d_readdir64_r (d_readdir64_r.U):
1570 This variable conditionally defines the HAS_READDIR64_R symbol,
1571 which indicates to the C program that the readdir64_r()
1572 routine is available.
1574 d_readdir (d_readdir.U):
1575 This variable conditionally defines HAS_READDIR if readdir() is
1576 available to read directory entries.
1578 d_readdir_r (d_readdir_r.U):
1579 This variable conditionally defines the HAS_READDIR_R symbol,
1580 which indicates to the C program that the readdir_r()
1581 routine is available.
1583 d_readlink (d_readlink.U):
1584 This variable conditionally defines the HAS_READLINK symbol, which
1585 indicates to the C program that the readlink() routine is available
1586 to read the value of a symbolic link.
1588 d_readv (d_readv.U):
1589 This variable conditionally defines the HAS_READV symbol, which
1590 indicates to the C program that the readv() routine is available.
1592 d_recvmsg (d_recvmsg.U):
1593 This variable conditionally defines the HAS_RECVMSG symbol, which
1594 indicates to the C program that the recvmsg() routine is available.
1596 d_rename (d_rename.U):
1597 This variable conditionally defines the HAS_RENAME symbol, which
1598 indicates to the C program that the rename() routine is available
1601 d_rewinddir (d_readdir.U):
1602 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1605 d_rmdir (d_rmdir.U):
1606 This variable conditionally defines HAS_RMDIR if rmdir() is
1607 available to remove directories.
1609 d_safebcpy (d_safebcpy.U):
1610 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1611 the bcopy() routine can do overlapping copies. Normally, you
1612 should probably use memmove().
1614 d_safemcpy (d_safemcpy.U):
1615 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1616 the memcpy() routine can do overlapping copies.
1617 For overlapping copies, memmove() should be used, if available.
1619 d_sanemcmp (d_sanemcmp.U):
1620 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1621 the memcpy() routine is available and can be used to compare relative
1622 magnitudes of chars with their high bits set.
1624 d_sbrkproto (d_sbrkproto.U):
1625 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1626 which indicates to the C program that the system provides
1627 a prototype for the sbrk() function. Otherwise, it is
1628 up to the program to supply one.
1630 d_scalbnl (d_scalbnl.U):
1631 This variable conditionally defines the HAS_SCALBNL symbol, which
1632 indicates to the C program that the scalbnl() routine is available.
1633 If ilogbl is also present we can emulate frexpl.
1635 d_sched_yield (d_pthread_y.U):
1636 This variable conditionally defines the HAS_SCHED_YIELD
1637 symbol if the sched_yield routine is available to yield
1638 the execution of the current thread.
1640 d_scm_rights (d_socket.U):
1641 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1642 which indicates that the SCM_RIGHTS is available. #ifdef is
1643 not enough because it may be an enum, glibc has been known to do this.
1645 d_SCNfldbl (longdblfio.U):
1646 This variable conditionally defines the PERL_PRIfldbl symbol, which
1647 indiciates that stdio has a symbol to scan long doubles.
1649 d_seekdir (d_readdir.U):
1650 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1653 d_select (d_select.U):
1654 This variable conditionally defines HAS_SELECT if select() is
1655 available to select active file descriptors. A <sys/time.h>
1656 inclusion may be necessary for the timeout field.
1659 This variable conditionally defines the HAS_SEM symbol, which
1660 indicates that the entire sem*(2) library is present.
1662 d_semctl (d_semctl.U):
1663 This variable conditionally defines the HAS_SEMCTL symbol, which
1664 indicates to the C program that the semctl() routine is available.
1666 d_semctl_semid_ds (d_union_semun.U):
1667 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1668 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1670 d_semctl_semun (d_union_semun.U):
1671 This variable conditionally defines USE_SEMCTL_SEMUN, which
1672 indicates that union semun is to be used for semctl IPC_STAT.
1674 d_semget (d_semget.U):
1675 This variable conditionally defines the HAS_SEMGET symbol, which
1676 indicates to the C program that the semget() routine is available.
1678 d_semop (d_semop.U):
1679 This variable conditionally defines the HAS_SEMOP symbol, which
1680 indicates to the C program that the semop() routine is available.
1682 d_sendmsg (d_sendmsg.U):
1683 This variable conditionally defines the HAS_SENDMSG symbol, which
1684 indicates to the C program that the sendmsg() routine is available.
1686 d_setegid (d_setegid.U):
1687 This variable conditionally defines the HAS_SETEGID symbol, which
1688 indicates to the C program that the setegid() routine is available
1689 to change the effective gid of the current program.
1691 d_seteuid (d_seteuid.U):
1692 This variable conditionally defines the HAS_SETEUID symbol, which
1693 indicates to the C program that the seteuid() routine is available
1694 to change the effective uid of the current program.
1696 d_setgrent (d_setgrent.U):
1697 This variable conditionally defines the HAS_SETGRENT symbol, which
1698 indicates to the C program that the setgrent() routine is available
1699 for initializing sequential access to the group database.
1701 d_setgrent_r (d_setgrent_r.U):
1702 This variable conditionally defines the HAS_SETGRENT_R symbol,
1703 which indicates to the C program that the setgrent_r()
1704 routine is available.
1706 d_setgrps (d_setgrps.U):
1707 This variable conditionally defines the HAS_SETGROUPS symbol, which
1708 indicates to the C program that the setgroups() routine is available
1709 to set the list of process groups.
1711 d_sethent (d_sethent.U):
1712 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1715 d_sethostent_r (d_sethostent_r.U):
1716 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1717 which indicates to the C program that the sethostent_r()
1718 routine is available.
1720 d_setitimer (d_setitimer.U):
1721 This variable conditionally defines the HAS_SETITIMER symbol, which
1722 indicates to the C program that the setitimer() routine is available.
1724 d_setlinebuf (d_setlnbuf.U):
1725 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1726 indicates to the C program that the setlinebuf() routine is available
1727 to change stderr or stdout from block-buffered or unbuffered to a
1730 d_setlocale (d_setlocale.U):
1731 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1732 available to handle locale-specific ctype implementations.
1734 d_setlocale_r (d_setlocale_r.U):
1735 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1736 which indicates to the C program that the setlocale_r()
1737 routine is available.
1739 d_setnent (d_setnent.U):
1740 This variable conditionally defines HAS_SETNETENT if setnetent() is
1743 d_setnetent_r (d_setnetent_r.U):
1744 This variable conditionally defines the HAS_SETNETENT_R symbol,
1745 which indicates to the C program that the setnetent_r()
1746 routine is available.
1748 d_setpent (d_setpent.U):
1749 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1752 d_setpgid (d_setpgid.U):
1753 This variable conditionally defines the HAS_SETPGID symbol if the
1754 setpgid(pid, gpid) function is available to set process group ID.
1756 d_setpgrp2 (d_setpgrp2.U):
1757 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1758 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1759 is available to set the current process group.
1761 d_setpgrp (d_setpgrp.U):
1762 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1763 available to set the current process group.
1765 d_setprior (d_setprior.U):
1766 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1767 is available to set a process's priority.
1769 d_setproctitle (d_setproctitle.U):
1770 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1771 which indicates to the C program that the setproctitle() routine
1774 d_setprotoent_r (d_setprotoent_r.U):
1775 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1776 which indicates to the C program that the setprotoent_r()
1777 routine is available.
1779 d_setpwent (d_setpwent.U):
1780 This variable conditionally defines the HAS_SETPWENT symbol, which
1781 indicates to the C program that the setpwent() routine is available
1782 for initializing sequential access to the passwd database.
1784 d_setpwent_r (d_setpwent_r.U):
1785 This variable conditionally defines the HAS_SETPWENT_R symbol,
1786 which indicates to the C program that the setpwent_r()
1787 routine is available.
1789 d_setregid (d_setregid.U):
1790 This variable conditionally defines HAS_SETREGID if setregid() is
1791 available to change the real and effective gid of the current
1794 d_setresgid (d_setregid.U):
1795 This variable conditionally defines HAS_SETRESGID if setresgid() is
1796 available to change the real, effective and saved gid of the current
1799 d_setresuid (d_setreuid.U):
1800 This variable conditionally defines HAS_SETREUID if setresuid() is
1801 available to change the real, effective and saved uid of the current
1804 d_setreuid (d_setreuid.U):
1805 This variable conditionally defines HAS_SETREUID if setreuid() is
1806 available to change the real and effective uid of the current
1809 d_setrgid (d_setrgid.U):
1810 This variable conditionally defines the HAS_SETRGID symbol, which
1811 indicates to the C program that the setrgid() routine is available
1812 to change the real gid of the current program.
1814 d_setruid (d_setruid.U):
1815 This variable conditionally defines the HAS_SETRUID symbol, which
1816 indicates to the C program that the setruid() routine is available
1817 to change the real uid of the current program.
1819 d_setsent (d_setsent.U):
1820 This variable conditionally defines HAS_SETSERVENT if setservent() is
1823 d_setservent_r (d_setservent_r.U):
1824 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1825 which indicates to the C program that the setservent_r()
1826 routine is available.
1828 d_setsid (d_setsid.U):
1829 This variable conditionally defines HAS_SETSID if setsid() is
1830 available to set the process group ID.
1832 d_setvbuf (d_setvbuf.U):
1833 This variable conditionally defines the HAS_SETVBUF symbol, which
1834 indicates to the C program that the setvbuf() routine is available
1835 to change buffering on an open stdio stream.
1838 This variable conditionally defines the USE_SFIO symbol,
1839 and indicates whether sfio is available (and should be used).
1842 This variable conditionally defines the HAS_SHM symbol, which
1843 indicates that the entire shm*(2) library is present.
1845 d_shmat (d_shmat.U):
1846 This variable conditionally defines the HAS_SHMAT symbol, which
1847 indicates to the C program that the shmat() routine is available.
1849 d_shmatprototype (d_shmat.U):
1850 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1851 symbol, which indicates that sys/shm.h has a prototype for
1854 d_shmctl (d_shmctl.U):
1855 This variable conditionally defines the HAS_SHMCTL symbol, which
1856 indicates to the C program that the shmctl() routine is available.
1858 d_shmdt (d_shmdt.U):
1859 This variable conditionally defines the HAS_SHMDT symbol, which
1860 indicates to the C program that the shmdt() routine is available.
1862 d_shmget (d_shmget.U):
1863 This variable conditionally defines the HAS_SHMGET symbol, which
1864 indicates to the C program that the shmget() routine is available.
1866 d_sigaction (d_sigaction.U):
1867 This variable conditionally defines the HAS_SIGACTION symbol, which
1868 indicates that the Vr4 sigaction() routine is available.
1870 d_sigprocmask (d_sigprocmask.U):
1871 This variable conditionally defines HAS_SIGPROCMASK
1872 if sigprocmask() is available to examine or change the signal mask
1873 of the calling process.
1875 d_sigsetjmp (d_sigsetjmp.U):
1876 This variable conditionally defines the HAS_SIGSETJMP symbol,
1877 which indicates that the sigsetjmp() routine is available to
1878 call setjmp() and optionally save the process's signal mask.
1880 d_sockatmark (d_sockatmark.U):
1881 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1882 indicates to the C program that the sockatmark() routine is available.
1884 d_sockatmarkproto (d_sockatmarkproto.U):
1885 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1886 which indicates to the C program that the system provides
1887 a prototype for the sockatmark() function. Otherwise, it is
1888 up to the program to supply one.
1890 d_socket (d_socket.U):
1891 This variable conditionally defines HAS_SOCKET, which indicates
1892 that the BSD socket interface is supported.
1894 d_socklen_t (d_socklen_t.U):
1895 This symbol will be defined if the C compiler supports socklen_t.
1897 d_sockpair (d_socket.U):
1898 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1899 indicates that the BSD socketpair() is supported.
1901 d_socks5_init (d_socks5_init.U):
1902 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1903 indicates to the C program that the socks5_init() routine is available.
1905 d_sqrtl (d_sqrtl.U):
1906 This variable conditionally defines the HAS_SQRTL symbol, which
1907 indicates to the C program that the sqrtl() routine is available.
1909 d_srand48_r (d_srand48_r.U):
1910 This variable conditionally defines the HAS_SRAND48_R symbol,
1911 which indicates to the C program that the srand48_r()
1912 routine is available.
1914 d_srandom_r (d_srandom_r.U):
1915 This variable conditionally defines the HAS_SRANDOM_R symbol,
1916 which indicates to the C program that the srandom_r()
1917 routine is available.
1919 d_sresgproto (d_sresgproto.U):
1920 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1921 which indicates to the C program that the system provides
1922 a prototype for the setresgid() function. Otherwise, it is
1923 up to the program to supply one.
1925 d_sresuproto (d_sresuproto.U):
1926 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1927 which indicates to the C program that the system provides
1928 a prototype for the setresuid() function. Otherwise, it is
1929 up to the program to supply one.
1931 d_statblks (d_statblks.U):
1932 This variable conditionally defines USE_STAT_BLOCKS
1933 if this system has a stat structure declaring
1934 st_blksize and st_blocks.
1936 d_statfs_f_flags (d_statfs_f_flags.U):
1937 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1938 symbol, which indicates to struct statfs from has f_flags member.
1939 This kind of struct statfs is coming from sys/mount.h (BSD),
1940 not from sys/statfs.h (SYSV).
1942 d_statfs_s (d_statfs_s.U):
1943 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1944 which indicates that the struct statfs is supported.
1946 d_statvfs (d_statvfs.U):
1947 This variable conditionally defines the HAS_STATVFS symbol, which
1948 indicates to the C program that the statvfs() routine is available.
1950 d_stdio_cnt_lval (d_stdstdio.U):
1951 This variable conditionally defines STDIO_CNT_LVALUE if the
1952 FILE_cnt macro can be used as an lvalue.
1954 d_stdio_ptr_lval (d_stdstdio.U):
1955 This variable conditionally defines STDIO_PTR_LVALUE if the
1956 FILE_ptr macro can be used as an lvalue.
1958 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
1959 This symbol is defined if using the FILE_ptr macro as an lvalue
1960 to increase the pointer by n leaves File_cnt(fp) unchanged.
1962 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1963 This symbol is defined if using the FILE_ptr macro as an lvalue
1964 to increase the pointer by n has the side effect of decreasing the
1965 value of File_cnt(fp) by n.
1967 d_stdio_stream_array (stdio_streams.U):
1968 This variable tells whether there is an array holding
1971 d_stdiobase (d_stdstdio.U):
1972 This variable conditionally defines USE_STDIO_BASE if this system
1973 has a FILE structure declaring a usable _base field (or equivalent)
1976 d_stdstdio (d_stdstdio.U):
1977 This variable conditionally defines USE_STDIO_PTR if this system
1978 has a FILE structure declaring usable _ptr and _cnt fields (or
1979 equivalent) in stdio.h.
1981 d_strchr (d_strchr.U):
1982 This variable conditionally defines HAS_STRCHR if strchr() and
1983 strrchr() are available for string searching.
1985 d_strcoll (d_strcoll.U):
1986 This variable conditionally defines HAS_STRCOLL if strcoll() is
1987 available to compare strings using collating information.
1989 d_strctcpy (d_strctcpy.U):
1990 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1991 indicates to the C program that this C compiler knows how to copy
1994 d_strerrm (d_strerror.U):
1995 This variable holds what Strerrr is defined as to translate an error
1996 code condition into an error message string. It could be 'strerror'
1997 or a more complex macro emulating strrror with sys_errlist[], or the
1998 "unknown" string when both strerror and sys_errlist are missing.
2000 d_strerror (d_strerror.U):
2001 This variable conditionally defines HAS_STRERROR if strerror() is
2002 available to translate error numbers to strings.
2004 d_strerror_r (d_strerror_r.U):
2005 This variable conditionally defines the HAS_STRERROR_R symbol,
2006 which indicates to the C program that the strerror_r()
2007 routine is available.
2009 d_strftime (d_strftime.U):
2010 This variable conditionally defines the HAS_STRFTIME symbol, which
2011 indicates to the C program that the strftime() routine is available.
2013 d_strlcat (d_strlcat.U):
2014 This variable conditionally defines the HAS_STRLCAT symbol, which
2015 indicates to the C program that the strlcat () routine is available.
2017 d_strlcpy (d_strlcpy.U):
2018 This variable conditionally defines the HAS_STRLCPY symbol, which
2019 indicates to the C program that the strlcpy () routine is available.
2021 d_strtod (d_strtod.U):
2022 This variable conditionally defines the HAS_STRTOD symbol, which
2023 indicates to the C program that the strtod() routine is available
2024 to provide better numeric string conversion than atof().
2026 d_strtol (d_strtol.U):
2027 This variable conditionally defines the HAS_STRTOL symbol, which
2028 indicates to the C program that the strtol() routine is available
2029 to provide better numeric string conversion than atoi() and friends.
2031 d_strtold (d_strtold.U):
2032 This variable conditionally defines the HAS_STRTOLD symbol, which
2033 indicates to the C program that the strtold() routine is available.
2035 d_strtoll (d_strtoll.U):
2036 This variable conditionally defines the HAS_STRTOLL symbol, which
2037 indicates to the C program that the strtoll() routine is available.
2039 d_strtoq (d_strtoq.U):
2040 This variable conditionally defines the HAS_STRTOQ symbol, which
2041 indicates to the C program that the strtoq() routine is available.
2043 d_strtoul (d_strtoul.U):
2044 This variable conditionally defines the HAS_STRTOUL symbol, which
2045 indicates to the C program that the strtoul() routine is available
2046 to provide conversion of strings to unsigned long.
2048 d_strtoull (d_strtoull.U):
2049 This variable conditionally defines the HAS_STRTOULL symbol, which
2050 indicates to the C program that the strtoull() routine is available.
2052 d_strtouq (d_strtouq.U):
2053 This variable conditionally defines the HAS_STRTOUQ symbol, which
2054 indicates to the C program that the strtouq() routine is available.
2056 d_strxfrm (d_strxfrm.U):
2057 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2058 available to transform strings.
2060 d_suidsafe (d_dosuid.U):
2061 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2062 if setuid scripts can be secure. This test looks in /dev/fd/.
2064 d_symlink (d_symlink.U):
2065 This variable conditionally defines the HAS_SYMLINK symbol, which
2066 indicates to the C program that the symlink() routine is available
2067 to create symbolic links.
2069 d_syscall (d_syscall.U):
2070 This variable conditionally defines HAS_SYSCALL if syscall() is
2071 available call arbitrary system calls.
2073 d_syscallproto (d_syscallproto.U):
2074 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2075 which indicates to the C program that the system provides
2076 a prototype for the syscall() function. Otherwise, it is
2077 up to the program to supply one.
2079 d_sysconf (d_sysconf.U):
2080 This variable conditionally defines the HAS_SYSCONF symbol, which
2081 indicates to the C program that the sysconf() routine is available
2082 to determine system related limits and options.
2084 d_sysernlst (d_strerror.U):
2085 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2086 is available to translate error numbers to the symbolic name.
2088 d_syserrlst (d_strerror.U):
2089 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2090 available to translate error numbers to strings.
2092 d_system (d_system.U):
2093 This variable conditionally defines HAS_SYSTEM if system() is
2094 available to issue a shell command.
2096 d_tcgetpgrp (d_tcgtpgrp.U):
2097 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2098 indicates to the C program that the tcgetpgrp() routine is available.
2099 to get foreground process group ID.
2101 d_tcsetpgrp (d_tcstpgrp.U):
2102 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2103 indicates to the C program that the tcsetpgrp() routine is available
2104 to set foreground process group ID.
2106 d_telldir (d_readdir.U):
2107 This variable conditionally defines HAS_TELLDIR if telldir() is
2110 d_telldirproto (d_telldirproto.U):
2111 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2112 which indicates to the C program that the system provides
2113 a prototype for the telldir() function. Otherwise, it is
2114 up to the program to supply one.
2117 This variable conditionally defines the HAS_TIME symbol, which indicates
2118 that the time() routine exists. The time() routine is normaly
2119 provided on UNIX systems.
2121 d_times (d_times.U):
2122 This variable conditionally defines the HAS_TIMES symbol, which indicates
2123 that the times() routine exists. The times() routine is normaly
2124 provided on UNIX systems. You may have to include <sys/times.h>.
2126 d_tm_tm_gmtoff (i_time.U):
2127 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2128 indicates to the C program that the struct tm has the tm_gmtoff field.
2130 d_tm_tm_zone (i_time.U):
2131 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2132 indicates to the C program that the struct tm has the tm_zone field.
2134 d_tmpnam_r (d_tmpnam_r.U):
2135 This variable conditionally defines the HAS_TMPNAM_R symbol,
2136 which indicates to the C program that the tmpnam_r()
2137 routine is available.
2139 d_truncate (d_truncate.U):
2140 This variable conditionally defines HAS_TRUNCATE if truncate() is
2141 available to truncate files.
2143 d_ttyname_r (d_ttyname_r.U):
2144 This variable conditionally defines the HAS_TTYNAME_R symbol,
2145 which indicates to the C program that the ttyname_r()
2146 routine is available.
2148 d_tzname (d_tzname.U):
2149 This variable conditionally defines HAS_TZNAME if tzname[] is
2150 available to access timezone names.
2152 d_u32align (d_u32align.U):
2153 This variable tells whether you must access character data
2154 through U32-aligned pointers.
2156 d_ualarm (d_ualarm.U):
2157 This variable conditionally defines the HAS_UALARM symbol, which
2158 indicates to the C program that the ualarm() routine is available.
2160 d_umask (d_umask.U):
2161 This variable conditionally defines the HAS_UMASK symbol, which
2162 indicates to the C program that the umask() routine is available.
2163 to set and get the value of the file creation mask.
2165 d_uname (d_gethname.U):
2166 This variable conditionally defines the HAS_UNAME symbol, which
2167 indicates to the C program that the uname() routine may be
2168 used to derive the host name.
2170 d_union_semun (d_union_semun.U):
2171 This variable conditionally defines HAS_UNION_SEMUN if the
2172 union semun is defined by including <sys/sem.h>.
2174 d_unordered (d_unordered.U):
2175 This variable conditionally defines the HAS_UNORDERED symbol, which
2176 indicates to the C program that the unordered() routine is available.
2178 d_usleep (d_usleep.U):
2179 This variable conditionally defines HAS_USLEEP if usleep() is
2180 available to do high granularity sleeps.
2182 d_usleepproto (d_usleepproto.U):
2183 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2184 which indicates to the C program that the system provides
2185 a prototype for the usleep() function. Otherwise, it is
2186 up to the program to supply one.
2188 d_ustat (d_ustat.U):
2189 This variable conditionally defines HAS_USTAT if ustat() is
2190 available to query file system statistics by dev_t.
2192 d_vendorarch (vendorarch.U):
2193 This variable conditionally defined PERL_VENDORARCH.
2195 d_vendorbin (vendorbin.U):
2196 This variable conditionally defines PERL_VENDORBIN.
2198 d_vendorlib (vendorlib.U):
2199 This variable conditionally defines PERL_VENDORLIB.
2201 d_vendorscript (vendorscript.U):
2202 This variable conditionally defines PERL_VENDORSCRIPT.
2204 d_vfork (d_vfork.U):
2205 This variable conditionally defines the HAS_VFORK symbol, which
2206 indicates the vfork() routine is available.
2208 d_void_closedir (d_closedir.U):
2209 This variable conditionally defines VOID_CLOSEDIR if closedir()
2210 does not return a value.
2212 d_voidsig (d_voidsig.U):
2213 This variable conditionally defines VOIDSIG if this system
2214 declares "void (*signal(...))()" in signal.h. The old way was to
2215 declare it as "int (*signal(...))()".
2217 d_voidtty (i_sysioctl.U):
2218 This variable conditionally defines USE_IOCNOTTY to indicate that the
2219 ioctl() call with TIOCNOTTY should be used to void tty association.
2220 Otherwise (on USG probably), it is enough to close the standard file
2221 decriptors and do a setpgrp().
2223 d_volatile (d_volatile.U):
2224 This variable conditionally defines the HASVOLATILE symbol, which
2225 indicates to the C program that this C compiler knows about the
2226 volatile declaration.
2228 d_vprintf (d_vprintf.U):
2229 This variable conditionally defines the HAS_VPRINTF symbol, which
2230 indicates to the C program that the vprintf() routine is available
2231 to printf with a pointer to an argument list.
2233 d_wait4 (d_wait4.U):
2234 This variable conditionally defines the HAS_WAIT4 symbol, which
2235 indicates the wait4() routine is available.
2237 d_waitpid (d_waitpid.U):
2238 This variable conditionally defines HAS_WAITPID if waitpid() is
2239 available to wait for child process.
2241 d_wcstombs (d_wcstombs.U):
2242 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2243 indicates to the C program that the wcstombs() routine is available
2244 to convert wide character strings to multibyte strings.
2246 d_wctomb (d_wctomb.U):
2247 This variable conditionally defines the HAS_WCTOMB symbol, which
2248 indicates to the C program that the wctomb() routine is available
2249 to convert a wide character to a multibyte.
2251 d_writev (d_writev.U):
2252 This variable conditionally defines the HAS_WRITEV symbol, which
2253 indicates to the C program that the writev() routine is available.
2256 This variable conditionally defines the symbol XENIX, which alerts
2257 the C program that it runs under Xenix.
2260 This variable is used internally by Configure to determine the
2261 full pathname (if any) of the date program. After Configure runs,
2262 the value is reset to a plain "date" and is not useful.
2264 db_hashtype (i_db.U):
2265 This variable contains the type of the hash structure element
2266 in the <db.h> header file. In older versions of DB, it was
2267 int, while in newer ones it is u_int32_t.
2269 db_prefixtype (i_db.U):
2270 This variable contains the type of the prefix structure element
2271 in the <db.h> header file. In older versions of DB, it was
2272 int, while in newer ones it is size_t.
2274 db_version_major (i_db.U):
2275 This variable contains the major version number of
2276 Berkeley DB found in the <db.h> header file.
2278 db_version_minor (i_db.U):
2279 This variable contains the minor version number of
2280 Berkeley DB found in the <db.h> header file.
2281 For DB version 1 this is always 0.
2283 db_version_patch (i_db.U):
2284 This variable contains the patch version number of
2285 Berkeley DB found in the <db.h> header file.
2286 For DB version 1 this is always 0.
2288 defvoidused (voidflags.U):
2289 This variable contains the default value of the VOIDUSED symbol (15).
2291 direntrytype (i_dirent.U):
2292 This symbol is set to 'struct direct' or 'struct dirent' depending on
2293 whether dirent is available or not. You should use this pseudo type to
2294 portably declare your directory entries.
2297 This variable contains the extension that is to be used for the
2298 dynamically loaded modules that perl generaties.
2301 This variable contains the name of the dynamic loading file that
2302 will be used with the package.
2304 doublesize (doublesize.U):
2305 This variable contains the value of the DOUBLESIZE symbol, which
2306 indicates to the C program how many bytes there are in a double.
2308 drand01 (randfunc.U):
2309 Indicates the macro to be used to generate normalized
2310 random numbers. Uses randfunc, often divided by
2311 (double) (((unsigned long) 1 << randbits)) in order to
2312 normalize the result.
2313 In C programs, the macro 'Drand01' is mapped to drand01.
2315 drand48_r_proto (d_drand48_r.U):
2316 This variable encodes the prototype of drand48_r.
2317 It is zero if d_drand48_r is undef, and one of the
2318 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2321 dynamic_ext (Extensions.U):
2322 This variable holds a list of XS extension files we want to
2323 link dynamically into the package. It is used by Makefile.
2325 eagain (nblock_io.U):
2326 This variable bears the symbolic errno code set by read() when no
2327 data is present on the file and non-blocking I/O was enabled (otherwise,
2328 read() blocks naturally).
2331 This variable conditionally defines EBCDIC if this
2332 system uses EBCDIC encoding. Among other things, this
2333 means that the character ranges are not contiguous.
2337 This variable is used internally by Configure to determine the
2338 full pathname (if any) of the echo program. After Configure runs,
2339 the value is reset to a plain "echo" and is not useful.
2342 This variable is used internally by Configure to determine the
2343 full pathname (if any) of the egrep program. After Configure runs,
2344 the value is reset to a plain "egrep" and is not useful.
2347 This variable is defined but not used by Configure.
2348 The value is a plain '' and is not useful.
2350 endgrent_r_proto (d_endgrent_r.U):
2351 This variable encodes the prototype of endgrent_r.
2352 It is zero if d_endgrent_r is undef, and one of the
2353 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2356 endhostent_r_proto (d_endhostent_r.U):
2357 This variable encodes the prototype of endhostent_r.
2358 It is zero if d_endhostent_r is undef, and one of the
2359 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2362 endnetent_r_proto (d_endnetent_r.U):
2363 This variable encodes the prototype of endnetent_r.
2364 It is zero if d_endnetent_r is undef, and one of the
2365 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2368 endprotoent_r_proto (d_endprotoent_r.U):
2369 This variable encodes the prototype of endprotoent_r.
2370 It is zero if d_endprotoent_r is undef, and one of the
2371 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2374 endpwent_r_proto (d_endpwent_r.U):
2375 This variable encodes the prototype of endpwent_r.
2376 It is zero if d_endpwent_r is undef, and one of the
2377 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2380 endservent_r_proto (d_endservent_r.U):
2381 This variable encodes the prototype of endservent_r.
2382 It is zero if d_endservent_r is undef, and one of the
2383 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2387 When running under Eunice this variable contains a command which will
2388 convert a shell script to the proper form of text file for it to be
2389 executable by the shell. On other systems it is a no-op.
2392 This is an old synonym for _exe.
2395 This variable is used internally by Configure to determine the
2396 full pathname (if any) of the expr program. After Configure runs,
2397 the value is reset to a plain "expr" and is not useful.
2399 extensions (Extensions.U):
2400 This variable holds a list of all extension files (both XS and
2401 non-xs linked into the package. It is propagated to Config.pm
2402 and is typically used to test whether a particular extesion
2406 This variable holds a list of extra modules to install.
2408 fflushall (fflushall.U):
2409 This symbol, if defined, tells that to flush
2410 all pending stdio output one must loop through all
2411 the stdio file handles stored in an array and fflush them.
2412 Note that if fflushNULL is defined, fflushall will not
2413 even be probed for and will be left undefined.
2415 fflushNULL (fflushall.U):
2416 This symbol, if defined, tells that fflush(NULL) does flush
2417 all pending stdio output.
2420 This variable is defined but not used by Configure.
2421 The value is a plain '' and is not useful.
2423 firstmakefile (Unix.U):
2424 This variable defines the first file searched by make. On unix,
2425 it is makefile (then Makefile). On case-insensitive systems,
2426 it might be something else. This is only used to deal with
2427 convoluted make depend tricks.
2430 This variable is defined but not used by Configure.
2431 The value is a plain '' and is not useful.
2433 fpossize (fpossize.U):
2434 This variable contains the size of a fpostype in bytes.
2436 fpostype (fpostype.U):
2437 This variable defines Fpos_t to be something like fpos_t, long,
2438 uint, or whatever type is used to declare file positions in libc.
2440 freetype (mallocsrc.U):
2441 This variable contains the return type of free(). It is usually
2442 void, but occasionally int.
2445 This variable contains the command used by Configure
2446 to copy files from the target host. Useful and available
2447 only during Perl build.
2448 The string ':' if not cross-compiling.
2451 This variable contains the full pathname to 'ar', whether or
2452 not the user has specified 'portability'. This is only used
2456 This variable contains the full pathname to 'csh', whether or
2457 not the user has specified 'portability'. This is only used
2458 in the compiled C program, and we assume that all systems which
2459 can share this executable will have the same full pathname to
2462 full_sed (Loc_sed.U):
2463 This variable contains the full pathname to 'sed', whether or
2464 not the user has specified 'portability'. This is only used
2465 in the compiled C program, and we assume that all systems which
2466 can share this executable will have the same full pathname to
2469 gccansipedantic (gccvers.U):
2470 If GNU cc (gcc) is used, this variable will enable (if set) the
2471 -ansi and -pedantic ccflags for building core files (through
2472 cflags script). (See Porting/pumpkin.pod for full description).
2474 gccosandvers (gccvers.U):
2475 If GNU cc (gcc) is used, this variable holds the operating system
2476 and version used to compile gcc. It is set to '' if not gcc,
2477 or if nothing useful can be parsed as the os version.
2479 gccversion (gccvers.U):
2480 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2481 indicate whether the compiler is version 1 or 2. This is used in
2482 setting some of the default cflags. It is set to '' if not gcc.
2484 getgrent_r_proto (d_getgrent_r.U):
2485 This variable encodes the prototype of getgrent_r.
2486 It is zero if d_getgrent_r is undef, and one of the
2487 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2490 getgrgid_r_proto (d_getgrgid_r.U):
2491 This variable encodes the prototype of getgrgid_r.
2492 It is zero if d_getgrgid_r is undef, and one of the
2493 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2496 getgrnam_r_proto (d_getgrnam_r.U):
2497 This variable encodes the prototype of getgrnam_r.
2498 It is zero if d_getgrnam_r is undef, and one of the
2499 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2502 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2503 This variable encodes the prototype of gethostbyaddr_r.
2504 It is zero if d_gethostbyaddr_r is undef, and one of the
2505 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2508 gethostbyname_r_proto (d_gethostbyname_r.U):
2509 This variable encodes the prototype of gethostbyname_r.
2510 It is zero if d_gethostbyname_r is undef, and one of the
2511 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2514 gethostent_r_proto (d_gethostent_r.U):
2515 This variable encodes the prototype of gethostent_r.
2516 It is zero if d_gethostent_r is undef, and one of the
2517 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2520 getlogin_r_proto (d_getlogin_r.U):
2521 This variable encodes the prototype of getlogin_r.
2522 It is zero if d_getlogin_r is undef, and one of the
2523 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2526 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2527 This variable encodes the prototype of getnetbyaddr_r.
2528 It is zero if d_getnetbyaddr_r is undef, and one of the
2529 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2532 getnetbyname_r_proto (d_getnetbyname_r.U):
2533 This variable encodes the prototype of getnetbyname_r.
2534 It is zero if d_getnetbyname_r is undef, and one of the
2535 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2538 getnetent_r_proto (d_getnetent_r.U):
2539 This variable encodes the prototype of getnetent_r.
2540 It is zero if d_getnetent_r is undef, and one of the
2541 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2544 getprotobyname_r_proto (d_getprotobyname_r.U):
2545 This variable encodes the prototype of getprotobyname_r.
2546 It is zero if d_getprotobyname_r is undef, and one of the
2547 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2550 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2551 This variable encodes the prototype of getprotobynumber_r.
2552 It is zero if d_getprotobynumber_r is undef, and one of the
2553 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2556 getprotoent_r_proto (d_getprotoent_r.U):
2557 This variable encodes the prototype of getprotoent_r.
2558 It is zero if d_getprotoent_r is undef, and one of the
2559 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2562 getpwent_r_proto (d_getpwent_r.U):
2563 This variable encodes the prototype of getpwent_r.
2564 It is zero if d_getpwent_r is undef, and one of the
2565 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2568 getpwnam_r_proto (d_getpwnam_r.U):
2569 This variable encodes the prototype of getpwnam_r.
2570 It is zero if d_getpwnam_r is undef, and one of the
2571 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2574 getpwuid_r_proto (d_getpwuid_r.U):
2575 This variable encodes the prototype of getpwuid_r.
2576 It is zero if d_getpwuid_r is undef, and one of the
2577 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2580 getservbyname_r_proto (d_getservbyname_r.U):
2581 This variable encodes the prototype of getservbyname_r.
2582 It is zero if d_getservbyname_r is undef, and one of the
2583 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2586 getservbyport_r_proto (d_getservbyport_r.U):
2587 This variable encodes the prototype of getservbyport_r.
2588 It is zero if d_getservbyport_r is undef, and one of the
2589 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2592 getservent_r_proto (d_getservent_r.U):
2593 This variable encodes the prototype of getservent_r.
2594 It is zero if d_getservent_r is undef, and one of the
2595 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2598 getspnam_r_proto (d_getspnam_r.U):
2599 This variable encodes the prototype of getspnam_r.
2600 It is zero if d_getspnam_r is undef, and one of the
2601 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2605 This variable contains the format string used for printing a Gid_t.
2607 gidsign (gidsign.U):
2608 This variable contains the signedness of a gidtype.
2609 1 for unsigned, -1 for signed.
2611 gidsize (gidsize.U):
2612 This variable contains the size of a gidtype in bytes.
2614 gidtype (gidtype.U):
2615 This variable defines Gid_t to be something like gid_t, int,
2616 ushort, or whatever type is used to declare the return type
2617 of getgid(). Typically, it is the type of group ids in the kernel.
2620 This variable holds the general path (space-separated) used to
2621 find libraries. It may contain directories that do not exist on
2622 this platform, libpth is the cleaned-up version.
2625 This variable is used internally by Configure to determine the
2626 full pathname (if any) of the gmake program. After Configure runs,
2627 the value is reset to a plain "gmake" and is not useful.
2629 gmtime_r_proto (d_gmtime_r.U):
2630 This variable encodes the prototype of gmtime_r.
2631 It is zero if d_gmtime_r is undef, and one of the
2632 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2635 gnulibc_version (d_gnulibc.U):
2636 This variable contains the version number of the GNU C library.
2637 It is usually something like '2.2.5'. It is a plain '' if this
2638 is not the GNU C library, or if the version is unknown.
2641 This variable is used internally by Configure to determine the
2642 full pathname (if any) of the grep program. After Configure runs,
2643 the value is reset to a plain "grep" and is not useful.
2646 This variable contains a command that produces the text of the
2647 /etc/group file. This is normally "cat /etc/group", but can be
2648 "ypcat group" when NIS is used.
2649 On some systems, such as os390, there may be no equivalent
2650 command, in which case this variable is unset.
2652 groupstype (groupstype.U):
2653 This variable defines Groups_t to be something like gid_t, int,
2654 ushort, or whatever type is used for the second argument to
2655 getgroups() and setgroups(). Usually, this is the same as
2656 gidtype (gid_t), but sometimes it isn't.
2659 This variable is used internally by Configure to determine the
2660 full pathname (if any) of the gzip program. After Configure runs,
2661 the value is reset to a plain "gzip" and is not useful.
2663 h_fcntl (h_fcntl.U):
2664 This is variable gets set in various places to tell i_fcntl that
2665 <fcntl.h> should be included.
2667 h_sysfile (h_sysfile.U):
2668 This is variable gets set in various places to tell i_sys_file that
2669 <sys/file.h> should be included.
2672 Gives the type of hints used for previous answers. May be one of
2673 "default", "recommended" or "previous".
2676 This variable contains a command that produces the text of the
2677 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2678 "ypcat hosts" when NIS is used.
2679 On some systems, such as os390, there may be no equivalent
2680 command, in which case this variable is unset.
2682 html1dir (html1dir.U):
2683 This variable contains the name of the directory in which html
2684 source pages are to be put. This directory is for pages
2685 that describe whole programs, not libraries or modules. It
2686 is intended to correspond roughly to section 1 of the Unix
2689 html1direxp (html1dir.U):
2690 This variable is the same as the html1dir variable, but is filename
2691 expanded at configuration time, for convenient use in makefiles.
2693 html3dir (html3dir.U):
2694 This variable contains the name of the directory in which html
2695 source pages are to be put. This directory is for pages
2696 that describe libraries or modules. It is intended to
2697 correspond roughly to section 3 of the Unix manuals.
2699 html3direxp (html3dir.U):
2700 This variable is the same as the html3dir variable, but is filename
2701 expanded at configuration time, for convenient use in makefiles.
2704 This variable is the size of an I16 in bytes.
2707 This variable contains the C type used for Perl's I16.
2710 This variable is the size of an I32 in bytes.
2713 This variable contains the C type used for Perl's I32.
2716 This variable is the size of an I64 in bytes.
2719 This variable contains the C type used for Perl's I64.
2722 This variable is the size of an I8 in bytes.
2725 This variable contains the C type used for Perl's I8.
2727 i_arpainet (i_arpainet.U):
2728 This variable conditionally defines the I_ARPA_INET symbol,
2729 and indicates whether a C program should include <arpa/inet.h>.
2731 i_bsdioctl (i_sysioctl.U):
2732 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2733 indicates to the C program that <sys/bsdioctl.h> exists and should
2736 i_crypt (i_crypt.U):
2737 This variable conditionally defines the I_CRYPT symbol, and indicates
2738 whether a C program should include <crypt.h>.
2741 This variable conditionally defines the I_DB symbol, and indicates
2742 whether a C program may include Berkeley's DB include file <db.h>.
2745 This variable conditionally defines the I_DBM symbol, which
2746 indicates to the C program that <dbm.h> exists and should
2749 i_dirent (i_dirent.U):
2750 This variable conditionally defines I_DIRENT, which indicates
2751 to the C program that it should include <dirent.h>.
2754 This variable conditionally defines the I_DLD symbol, which
2755 indicates to the C program that <dld.h> (GNU dynamic loading)
2756 exists and should be included.
2758 i_dlfcn (i_dlfcn.U):
2759 This variable conditionally defines the I_DLFCN symbol, which
2760 indicates to the C program that <dlfcn.h> exists and should
2763 i_fcntl (i_fcntl.U):
2764 This variable controls the value of I_FCNTL (which tells
2765 the C program to include <fcntl.h>).
2767 i_float (i_float.U):
2768 This variable conditionally defines the I_FLOAT symbol, and indicates
2769 whether a C program may include <float.h> to get symbols like DBL_MAX
2770 or DBL_MIN, i.e. machine dependent floating point values.
2773 This variable conditionally defines the I_FP symbol, and indicates
2774 whether a C program should include <fp.h>.
2776 i_fp_class (i_fp_class.U):
2777 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2778 whether a C program should include <fp_class.h>.
2781 This variable conditionally defines the I_GDBM symbol, which
2782 indicates to the C program that <gdbm.h> exists and should
2786 This variable conditionally defines the I_GRP symbol, and indicates
2787 whether a C program should include <grp.h>.
2789 i_ieeefp (i_ieeefp.U):
2790 This variable conditionally defines the I_IEEEFP symbol, and indicates
2791 whether a C program should include <ieeefp.h>.
2793 i_inttypes (i_inttypes.U):
2794 This variable conditionally defines the I_INTTYPES symbol,
2795 and indicates whether a C program should include <inttypes.h>.
2797 i_langinfo (i_langinfo.U):
2798 This variable conditionally defines the I_LANGINFO symbol,
2799 and indicates whether a C program should include <langinfo.h>.
2801 i_libutil (i_libutil.U):
2802 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2803 whether a C program should include <libutil.h>.
2805 i_limits (i_limits.U):
2806 This variable conditionally defines the I_LIMITS symbol, and indicates
2807 whether a C program may include <limits.h> to get symbols like WORD_BIT
2810 i_locale (i_locale.U):
2811 This variable conditionally defines the I_LOCALE symbol,
2812 and indicates whether a C program should include <locale.h>.
2814 i_machcthr (i_machcthr.U):
2815 This variable conditionally defines the I_MACH_CTHREADS symbol,
2816 and indicates whether a C program should include <mach/cthreads.h>.
2818 i_malloc (i_malloc.U):
2819 This variable conditionally defines the I_MALLOC symbol, and indicates
2820 whether a C program should include <malloc.h>.
2823 This variable conditionally defines the I_MATH symbol, and indicates
2824 whether a C program may include <math.h>.
2826 i_memory (i_memory.U):
2827 This variable conditionally defines the I_MEMORY symbol, and indicates
2828 whether a C program should include <memory.h>.
2830 i_mntent (i_mntent.U):
2831 This variable conditionally defines the I_MNTENT symbol, and indicates
2832 whether a C program should include <mntent.h>.
2835 This variable conditionally defines the I_NDBM symbol, which
2836 indicates to the C program that <ndbm.h> exists and should
2839 i_netdb (i_netdb.U):
2840 This variable conditionally defines the I_NETDB symbol, and indicates
2841 whether a C program should include <netdb.h>.
2843 i_neterrno (i_neterrno.U):
2844 This variable conditionally defines the I_NET_ERRNO symbol, which
2845 indicates to the C program that <net/errno.h> exists and should
2848 i_netinettcp (i_netinettcp.U):
2849 This variable conditionally defines the I_NETINET_TCP symbol,
2850 and indicates whether a C program should include <netinet/tcp.h>.
2853 This variable conditionally defines I_NETINET_IN, which indicates
2854 to the C program that it should include <netinet/in.h>. Otherwise,
2855 you may try <sys/in.h>.
2858 This variable conditionally defines the I_POLL symbol, and indicates
2859 whether a C program should include <poll.h>.
2862 This variable conditionally defines the I_PROT symbol, and indicates
2863 whether a C program should include <prot.h>.
2865 i_pthread (i_pthread.U):
2866 This variable conditionally defines the I_PTHREAD symbol,
2867 and indicates whether a C program should include <pthread.h>.
2870 This variable conditionally defines I_PWD, which indicates
2871 to the C program that it should include <pwd.h>.
2873 i_rpcsvcdbm (i_dbm.U):
2874 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2875 indicates to the C program that <rpcsvc/dbm.h> exists and should
2876 be included. Some System V systems might need this instead of <dbm.h>.
2879 This variable conditionally defines the I_SFIO symbol,
2880 and indicates whether a C program should include <sfio.h>.
2882 i_sgtty (i_termio.U):
2883 This variable conditionally defines the I_SGTTY symbol, which
2884 indicates to the C program that it should include <sgtty.h> rather
2887 i_shadow (i_shadow.U):
2888 This variable conditionally defines the I_SHADOW symbol, and indicates
2889 whether a C program should include <shadow.h>.
2891 i_socks (i_socks.U):
2892 This variable conditionally defines the I_SOCKS symbol, and indicates
2893 whether a C program should include <socks.h>.
2895 i_stdarg (i_varhdr.U):
2896 This variable conditionally defines the I_STDARG symbol, which
2897 indicates to the C program that <stdarg.h> exists and should
2900 i_stddef (i_stddef.U):
2901 This variable conditionally defines the I_STDDEF symbol, which
2902 indicates to the C program that <stddef.h> exists and should
2905 i_stdlib (i_stdlib.U):
2906 This variable conditionally defines the I_STDLIB symbol, which
2907 indicates to the C program that <stdlib.h> exists and should
2910 i_string (i_string.U):
2911 This variable conditionally defines the I_STRING symbol, which
2912 indicates that <string.h> should be included rather than <strings.h>.
2914 i_sunmath (i_sunmath.U):
2915 This variable conditionally defines the I_SUNMATH symbol, and indicates
2916 whether a C program should include <sunmath.h>.
2918 i_sysaccess (i_sysaccess.U):
2919 This variable conditionally defines the I_SYS_ACCESS symbol,
2920 and indicates whether a C program should include <sys/access.h>.
2922 i_sysdir (i_sysdir.U):
2923 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2924 whether a C program should include <sys/dir.h>.
2926 i_sysfile (i_sysfile.U):
2927 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2928 whether a C program should include <sys/file.h> to get R_OK and friends.
2930 i_sysfilio (i_sysioctl.U):
2931 This variable conditionally defines the I_SYS_FILIO symbol, which
2932 indicates to the C program that <sys/filio.h> exists and should
2933 be included in preference to <sys/ioctl.h>.
2936 This variable conditionally defines I_SYS_IN, which indicates
2937 to the C program that it should include <sys/in.h> instead of
2940 i_sysioctl (i_sysioctl.U):
2941 This variable conditionally defines the I_SYS_IOCTL symbol, which
2942 indicates to the C program that <sys/ioctl.h> exists and should
2945 i_syslog (i_syslog.U):
2946 This variable conditionally defines the I_SYSLOG symbol,
2947 and indicates whether a C program should include <syslog.h>.
2949 i_sysmman (i_sysmman.U):
2950 This variable conditionally defines the I_SYS_MMAN symbol, and
2951 indicates whether a C program should include <sys/mman.h>.
2953 i_sysmode (i_sysmode.U):
2954 This variable conditionally defines the I_SYSMODE symbol,
2955 and indicates whether a C program should include <sys/mode.h>.
2957 i_sysmount (i_sysmount.U):
2958 This variable conditionally defines the I_SYSMOUNT symbol,
2959 and indicates whether a C program should include <sys/mount.h>.
2961 i_sysndir (i_sysndir.U):
2962 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2963 whether a C program should include <sys/ndir.h>.
2965 i_sysparam (i_sysparam.U):
2966 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2967 whether a C program should include <sys/param.h>.
2969 i_sysresrc (i_sysresrc.U):
2970 This variable conditionally defines the I_SYS_RESOURCE symbol,
2971 and indicates whether a C program should include <sys/resource.h>.
2973 i_syssecrt (i_syssecrt.U):
2974 This variable conditionally defines the I_SYS_SECURITY symbol,
2975 and indicates whether a C program should include <sys/security.h>.
2977 i_sysselct (i_sysselct.U):
2978 This variable conditionally defines I_SYS_SELECT, which indicates
2979 to the C program that it should include <sys/select.h> in order to
2980 get the definition of struct timeval.
2982 i_syssockio (i_sysioctl.U):
2983 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2984 C program that socket ioctl codes may be found in <sys/sockio.h>
2985 instead of <sys/ioctl.h>.
2987 i_sysstat (i_sysstat.U):
2988 This variable conditionally defines the I_SYS_STAT symbol,
2989 and indicates whether a C program should include <sys/stat.h>.
2991 i_sysstatfs (i_sysstatfs.U):
2992 This variable conditionally defines the I_SYSSTATFS symbol,
2993 and indicates whether a C program should include <sys/statfs.h>.
2995 i_sysstatvfs (i_sysstatvfs.U):
2996 This variable conditionally defines the I_SYSSTATVFS symbol,
2997 and indicates whether a C program should include <sys/statvfs.h>.
2999 i_systime (i_time.U):
3000 This variable conditionally defines I_SYS_TIME, which indicates
3001 to the C program that it should include <sys/time.h>.
3003 i_systimek (i_time.U):
3004 This variable conditionally defines I_SYS_TIME_KERNEL, which
3005 indicates to the C program that it should include <sys/time.h>
3006 with KERNEL defined.
3008 i_systimes (i_systimes.U):
3009 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3010 whether a C program should include <sys/times.h>.
3012 i_systypes (i_systypes.U):
3013 This variable conditionally defines the I_SYS_TYPES symbol,
3014 and indicates whether a C program should include <sys/types.h>.
3016 i_sysuio (i_sysuio.U):
3017 This variable conditionally defines the I_SYSUIO symbol, and indicates
3018 whether a C program should include <sys/uio.h>.
3020 i_sysun (i_sysun.U):
3021 This variable conditionally defines I_SYS_UN, which indicates
3022 to the C program that it should include <sys/un.h> to get UNIX
3023 domain socket definitions.
3025 i_sysutsname (i_sysutsname.U):
3026 This variable conditionally defines the I_SYSUTSNAME symbol,
3027 and indicates whether a C program should include <sys/utsname.h>.
3029 i_sysvfs (i_sysvfs.U):
3030 This variable conditionally defines the I_SYSVFS symbol,
3031 and indicates whether a C program should include <sys/vfs.h>.
3033 i_syswait (i_syswait.U):
3034 This variable conditionally defines I_SYS_WAIT, which indicates
3035 to the C program that it should include <sys/wait.h>.
3037 i_termio (i_termio.U):
3038 This variable conditionally defines the I_TERMIO symbol, which
3039 indicates to the C program that it should include <termio.h> rather
3042 i_termios (i_termio.U):
3043 This variable conditionally defines the I_TERMIOS symbol, which
3044 indicates to the C program that the POSIX <termios.h> file is
3048 This variable conditionally defines I_TIME, which indicates
3049 to the C program that it should include <time.h>.
3051 i_unistd (i_unistd.U):
3052 This variable conditionally defines the I_UNISTD symbol, and indicates
3053 whether a C program should include <unistd.h>.
3055 i_ustat (i_ustat.U):
3056 This variable conditionally defines the I_USTAT symbol, and indicates
3057 whether a C program should include <ustat.h>.
3059 i_utime (i_utime.U):
3060 This variable conditionally defines the I_UTIME symbol, and indicates
3061 whether a C program should include <utime.h>.
3063 i_values (i_values.U):
3064 This variable conditionally defines the I_VALUES symbol, and indicates
3065 whether a C program may include <values.h> to get symbols like MAXLONG
3068 i_varargs (i_varhdr.U):
3069 This variable conditionally defines I_VARARGS, which indicates
3070 to the C program that it should include <varargs.h>.
3072 i_varhdr (i_varhdr.U):
3073 Contains the name of the header to be included to get va_dcl definition.
3074 Typically one of varargs.h or stdarg.h.
3076 i_vfork (i_vfork.U):
3077 This variable conditionally defines the I_VFORK symbol, and indicates
3078 whether a C program should include vfork.h.
3080 ignore_versioned_solibs (libs.U):
3081 This variable should be non-empty if non-versioned shared
3082 libraries (libfoo.so.x.y) are to be ignored (because they
3083 cannot be linked against).
3085 inc_version_list (inc_version_list.U):
3086 This variable specifies the list of subdirectories in over
3087 which perl.c:incpush() and lib/lib.pm will automatically
3088 search when adding directories to @INC. The elements in
3089 the list are separated by spaces. This is only useful
3090 if you have a perl library directory tree structured like the
3091 default one. See INSTALL for how this works. The versioned
3092 site_perl directory was introduced in 5.005, so that is the
3093 lowest possible value.
3095 inc_version_list_init (inc_version_list.U):
3096 This variable holds the same list as inc_version_list, but
3097 each item is enclosed in double quotes and separated by commas,
3098 suitable for use in the PERL_INC_VERSION_LIST initialization.
3101 This variable must preceed the normal include path to get hte
3102 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3103 Value can be "" or "/bsd43" on mips.
3106 This variable is defined but not used by Configure.
3107 The value is a plain '' and is not useful.
3109 installarchlib (archlib.U):
3110 This variable is really the same as archlibexp but may differ on
3111 those systems using AFS. For extra portability, only this variable
3112 should be used in makefiles.
3115 This variable is the same as binexp unless AFS is running in which case
3116 the user is explicitely prompted for it. This variable should always
3117 be used in your makefiles for maximum portability.
3119 installhtml1dir (html1dir.U):
3120 This variable is really the same as html1direxp, unless you are
3121 using a different installprefix. For extra portability, you
3122 should only use this variable within your makefiles.
3124 installhtml3dir (html3dir.U):
3125 This variable is really the same as html3direxp, unless you are
3126 using a different installprefix. For extra portability, you
3127 should only use this variable within your makefiles.
3129 installman1dir (man1dir.U):
3130 This variable is really the same as man1direxp, unless you are using
3131 AFS in which case it points to the read/write location whereas
3132 man1direxp only points to the read-only access location. For extra
3133 portability, you should only use this variable within your makefiles.
3135 installman3dir (man3dir.U):
3136 This variable is really the same as man3direxp, unless you are using
3137 AFS in which case it points to the read/write location whereas
3138 man3direxp only points to the read-only access location. For extra
3139 portability, you should only use this variable within your makefiles.
3141 installprefix (installprefix.U):
3142 This variable holds the name of the directory below which
3143 "make install" will install the package. For most users, this
3144 is the same as prefix. However, it is useful for
3145 installing the software into a different (usually temporary)
3146 location after which it can be bundled up and moved somehow
3147 to the final location specified by prefix.
3149 installprefixexp (installprefix.U):
3150 This variable holds the full absolute path of installprefix
3151 with all ~-expansion done.
3153 installprivlib (privlib.U):
3154 This variable is really the same as privlibexp but may differ on
3155 those systems using AFS. For extra portability, only this variable
3156 should be used in makefiles.
3158 installscript (scriptdir.U):
3159 This variable is usually the same as scriptdirexp, unless you are on
3160 a system running AFS, in which case they may differ slightly. You
3161 should always use this variable within your makefiles for portability.
3163 installsitearch (sitearch.U):
3164 This variable is really the same as sitearchexp but may differ on
3165 those systems using AFS. For extra portability, only this variable
3166 should be used in makefiles.
3168 installsitebin (sitebin.U):
3169 This variable is usually the same as sitebinexp, unless you are on
3170 a system running AFS, in which case they may differ slightly. You
3171 should always use this variable within your makefiles for portability.
3173 installsitehtml1dir (sitehtml1dir.U):
3174 This variable is really the same as sitehtml1direxp, unless you are using
3175 AFS in which case it points to the read/write location whereas
3176 html1direxp only points to the read-only access location. For extra
3177 portability, you should only use this variable within your makefiles.
3179 installsitehtml3dir (sitehtml3dir.U):
3180 This variable is really the same as sitehtml3direxp, unless you are using
3181 AFS in which case it points to the read/write location whereas
3182 html3direxp only points to the read-only access location. For extra
3183 portability, you should only use this variable within your makefiles.
3185 installsitelib (sitelib.U):
3186 This variable is really the same as sitelibexp but may differ on
3187 those systems using AFS. For extra portability, only this variable
3188 should be used in makefiles.
3190 installsiteman1dir (siteman1dir.U):
3191 This variable is really the same as siteman1direxp, unless you are using
3192 AFS in which case it points to the read/write location whereas
3193 man1direxp only points to the read-only access location. For extra
3194 portability, you should only use this variable within your makefiles.
3196 installsiteman3dir (siteman3dir.U):
3197 This variable is really the same as siteman3direxp, unless you are using
3198 AFS in which case it points to the read/write location whereas
3199 man3direxp only points to the read-only access location. For extra
3200 portability, you should only use this variable within your makefiles.
3202 installsitescript (sitescript.U):
3203 This variable is usually the same as sitescriptexp, unless you are on
3204 a system running AFS, in which case they may differ slightly. You
3205 should always use this variable within your makefiles for portability.
3207 installstyle (installstyle.U):
3208 This variable describes the "style" of the perl installation.
3209 This is intended to be useful for tools that need to
3210 manipulate entire perl distributions. Perl itself doesn't use
3211 this to find its libraries -- the library directories are
3212 stored directly in Config.pm. Currently, there are only two
3213 styles: "lib" and "lib/perl5". The default library locations
3214 (e.g. privlib, sitelib) are either $prefix/lib or
3215 $prefix/lib/perl5. The former is useful if $prefix is a
3216 directory dedicated to perl (e.g. /opt/perl), while the latter
3217 is useful if $prefix is shared by many packages, e.g. if
3220 Unfortunately, while this "style" variable is used to set
3221 defaults for all three directory hierarchies (core, vendor, and
3222 site), there is no guarantee that the same style is actually
3223 appropriate for all those directories. For example, $prefix
3224 might be /opt/perl, but $siteprefix might be /usr/local.
3225 (Perhaps, in retrospect, the "lib" style should never have been
3226 supported, but it did seem like a nice idea at the time.)
3228 The situation is even less clear for tools such as MakeMaker
3229 that can be used to install additional modules into
3230 non-standard places. For example, if a user intends to install
3231 a module into a private directory (perhaps by setting PREFIX on
3232 the Makefile.PL command line), then there is no reason to
3233 assume that the Configure-time $installstyle setting will be
3234 relevant for that PREFIX.
3236 This may later be extended to include other information, so
3237 be careful with pattern-matching on the results.
3239 For compatibility with perl5.005 and earlier, the default
3240 setting is based on whether or not $prefix contains the string
3243 installusrbinperl (instubperl.U):
3244 This variable tells whether Perl should be installed also as
3245 /usr/bin/perl in addition to
3248 installvendorarch (vendorarch.U):
3249 This variable is really the same as vendorarchexp but may differ on
3250 those systems using AFS. For extra portability, only this variable
3251 should be used in makefiles.
3253 installvendorbin (vendorbin.U):
3254 This variable is really the same as vendorbinexp but may differ on
3255 those systems using AFS. For extra portability, only this variable
3256 should be used in makefiles.
3258 installvendorhtml1dir (vendorhtml1dir.U):
3259 This variable is really the same as vendorhtml1direxp but may differ on
3260 those systems using AFS. For extra portability, only this variable
3261 should be used in makefiles.
3263 installvendorhtml3dir (vendorhtml3dir.U):
3264 This variable is really the same as vendorhtml3direxp but may differ on
3265 those systems using AFS. For extra portability, only this variable
3266 should be used in makefiles.
3268 installvendorlib (vendorlib.U):
3269 This variable is really the same as vendorlibexp but may differ on
3270 those systems using AFS. For extra portability, only this variable
3271 should be used in makefiles.
3273 installvendorman1dir (vendorman1dir.U):
3274 This variable is really the same as vendorman1direxp but may differ on
3275 those systems using AFS. For extra portability, only this variable
3276 should be used in makefiles.
3278 installvendorman3dir (vendorman3dir.U):
3279 This variable is really the same as vendorman3direxp but may differ on
3280 those systems using AFS. For extra portability, only this variable
3281 should be used in makefiles.
3283 installvendorscript (vendorscript.U):
3284 This variable is really the same as vendorscriptexp but may differ on
3285 those systems using AFS. For extra portability, only this variable
3286 should be used in makefiles.
3288 intsize (intsize.U):
3289 This variable contains the value of the INTSIZE symbol, which
3290 indicates to the C program how many bytes there are in an int.
3292 issymlink (issymlink.U):
3293 This variable holds the test command to test for a symbolic link
3294 (if they are supported). Typical values include 'test -h' and
3297 ivdformat (perlxvf.U):
3298 This variable contains the format string used for printing
3299 a Perl IV as a signed decimal integer.
3302 This variable is the size of an IV in bytes.
3305 This variable contains the C type used for Perl's IV.
3307 known_extensions (Extensions.U):
3308 This variable holds a list of all XS extensions included in
3312 This variable is defined but not used by Configure.
3313 The value is a plain '' and is not useful.
3316 This variable indicates the program to be used to link
3317 libraries for dynamic loading. On some systems, it is 'ld'.
3318 On ELF systems, it should be $cc. Mostly, we'll try to respect
3319 the hint file setting.
3321 lddlflags (dlsrc.U):
3322 This variable contains any special flags that might need to be
3323 passed to $ld to create a shared library suitable for dynamic
3324 loading. It is up to the makefile to use it. For hpux, it
3325 should be '-b'. For sunos 4.1, it is empty.
3327 ldflags (ccflags.U):
3328 This variable contains any additional C loader flags desired by
3329 the user. It is up to the Makefile to use this.
3331 ldflags_uselargefiles (uselfs.U):
3332 This variable contains the loader flags needed by large file builds
3333 and added to ldflags by hints files.
3335 ldlibpthname (libperl.U):
3336 This variable holds the name of the shared library
3337 search path, often LD_LIBRARY_PATH. To get an empty
3338 string, the hints file must set this to 'none'.
3341 This variable is used internally by Configure to determine the
3342 full pathname (if any) of the less program. After Configure runs,
3343 the value is reset to a plain "less" and is not useful.
3346 This is an old synonym for _a.
3349 This variable contains the location of the C library.
3351 libperl (libperl.U):
3352 The perl executable is obtained by linking perlmain.c with
3353 libperl, any static extensions (usually just DynaLoader),
3354 and any other libraries needed on this system. libperl
3355 is usually libperl.a, but can also be libperl.so.xxx if
3356 the user wishes to build a perl executable with a shared
3360 This variable holds the general path (space-separated) used to find
3361 libraries. It is intended to be used by other units.
3364 This variable holds the additional libraries we want to use.
3365 It is up to the Makefile to deal with it. The list can be empty.
3368 This variable holds the directory names aka dirnames of the libraries
3369 we found and accepted, duplicates are removed.
3372 This variable holds the filenames aka basenames of the libraries
3373 we found and accepted.
3376 This variable holds the full pathnames of the libraries
3377 we found and accepted.
3380 This variable holds the directory names probed for libraries.
3382 libswanted (Myinit.U):
3383 This variable holds a list of all the libraries we want to
3384 search. The order is chosen to pick up the c library
3385 ahead of ucb or bsd libraries for SVR4.
3387 libswanted_uselargefiles (uselfs.U):
3388 This variable contains the libraries needed by large file builds
3389 and added to ldflags by hints files. It is a space separated list
3390 of the library names without the "lib" prefix or any suffix, just
3394 This variable is defined but not used by Configure.
3395 The value is a plain '' and is not useful.
3398 This variable is defined but not used by Configure.
3399 The value is a plain '' and is not useful.
3401 lkflags (ccflags.U):
3402 This variable contains any additional C partial linker flags desired by
3403 the user. It is up to the Makefile to use this.
3406 This variable is used internally by Configure to determine the
3407 full pathname (if any) of the ln program. After Configure runs,
3408 the value is reset to a plain "ln" and is not useful.
3411 This variable holds the name of the command to make
3412 symbolic links (if they are supported). It can be used
3413 in the Makefile. It is either 'ln -s' or 'ln'
3415 localtime_r_proto (d_localtime_r.U):
3416 This variable encodes the prototype of localtime_r.
3417 It is zero if d_localtime_r is undef, and one of the
3418 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3421 locincpth (ccflags.U):
3422 This variable contains a list of additional directories to be
3423 searched by the compiler. The appropriate '-I' directives will
3424 be added to ccflags. This is intended to simplify setting
3425 local directories from the Configure command line.
3426 It's not much, but it parallels the loclibpth stuff in libpth.U.
3428 loclibpth (libpth.U):
3429 This variable holds the paths (space-separated) used to find local
3430 libraries. It is prepended to libpth, and is intended to be easily
3431 set from the command line.
3433 longdblsize (d_longdbl.U):
3434 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3435 indicates to the C program how many bytes there are in a long double,
3436 if this system supports long doubles.
3438 longlongsize (d_longlong.U):
3439 This variable contains the value of the LONGLONGSIZE symbol, which
3440 indicates to the C program how many bytes there are in a long long,
3441 if this system supports long long.
3443 longsize (intsize.U):
3444 This variable contains the value of the LONGSIZE symbol, which
3445 indicates to the C program how many bytes there are in a long.
3448 This variable is defined but not used by Configure.
3449 The value is a plain '' and is not useful.
3452 This variable is defined but not used by Configure.
3453 The value is a plain '' and is not useful.
3456 This variable is used internally by Configure to determine the
3457 full pathname (if any) of the ls program. After Configure runs,
3458 the value is reset to a plain "ls" and is not useful.
3460 lseeksize (lseektype.U):
3461 This variable defines lseektype to be something like off_t, long,
3462 or whatever type is used to declare lseek offset's type in the
3463 kernel (which also appears to be lseek's return type).
3465 lseektype (lseektype.U):
3466 This variable defines lseektype to be something like off_t, long,
3467 or whatever type is used to declare lseek offset's type in the
3468 kernel (which also appears to be lseek's return type).
3471 This variable is defined but not used by Configure.
3472 The value is a plain '' and is not useful.
3475 This variable is defined but not used by Configure.
3476 The value is a plain '' and is not useful.
3479 This variable is used internally by Configure to determine the
3480 full pathname (if any) of the make program. After Configure runs,
3481 the value is reset to a plain "make" and is not useful.
3483 make_set_make (make.U):
3484 Some versions of 'make' set the variable MAKE. Others do not.
3485 This variable contains the string to be included in Makefile.SH
3486 so that MAKE is set if needed, and not if not needed.
3487 Possible values are:
3489 make_set_make='#' # If your make program handles this for you,
3491 make_set_make="MAKE=$make" # if it doesn't.
3493 This uses a comment character to distinguish a
3494 'set' value (from a previous config.sh or Configure '-D' option)
3495 from an uncomputed value.
3497 mallocobj (mallocsrc.U):
3498 This variable contains the name of the malloc.o that this package
3499 generates, if that malloc.o is preferred over the system malloc.
3500 Otherwise the value is null. This variable is intended for generating
3501 Makefiles. See mallocsrc.
3503 mallocsrc (mallocsrc.U):
3504 This variable contains the name of the malloc.c that comes with
3505 the package, if that malloc.c is preferred over the system malloc.
3506 Otherwise the value is null. This variable is intended for generating
3509 malloctype (mallocsrc.U):
3510 This variable contains the kind of ptr returned by malloc and realloc.
3512 man1dir (man1dir.U):
3513 This variable contains the name of the directory in which manual
3514 source pages are to be put. It is the responsibility of the
3515 Makefile.SH to get the value of this into the proper command.
3516 You must be prepared to do the ~name expansion yourself.
3518 man1direxp (man1dir.U):
3519 This variable is the same as the man1dir variable, but is filename
3520 expanded at configuration time, for convenient use in makefiles.
3522 man1ext (man1dir.U):
3523 This variable contains the extension that the manual page should
3524 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3527 man3dir (man3dir.U):
3528 This variable contains the name of the directory in which manual
3529 source pages are to be put. It is the responsibility of the
3530 Makefile.SH to get the value of this into the proper command.
3531 You must be prepared to do the ~name expansion yourself.
3533 man3direxp (man3dir.U):
3534 This variable is the same as the man3dir variable, but is filename
3535 expanded at configuration time, for convenient use in makefiles.
3537 man3ext (man3dir.U):
3538 This variable contains the extension that the manual page should
3539 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3543 This variable is used internally by Configure to determine the
3544 full pathname (if any) of the Mcc program. After Configure runs,
3545 the value is reset to a plain "Mcc" and is not useful.
3547 mips_type (usrinc.U):
3548 This variable holds the environment type for the mips system.
3549 Possible values are "BSD 4.3" and "System V".
3551 mistrustnm (Csym.U):
3552 This variable can be used to establish a fallthrough for the cases
3553 where nm fails to find a symbol. If usenm is false or usenm is true
3554 and mistrustnm is false, this variable has no effect. If usenm is true
3555 and mistrustnm is "compile", a test program will be compiled to try to
3556 find any symbol that can't be located via nm lookup. If mistrustnm is
3557 "run", the test program will be run as well as being compiled.
3560 This variable is used internally by Configure to determine the
3561 full pathname (if any) of the mkdir program. After Configure runs,
3562 the value is reset to a plain "mkdir" and is not useful.
3564 mmaptype (d_mmap.U):
3565 This symbol contains the type of pointer returned by mmap()
3566 (and simultaneously the type of the first argument).
3567 It can be 'void *' or 'caddr_t'.
3569 modetype (modetype.U):
3570 This variable defines modetype to be something like mode_t,
3571 int, unsigned short, or whatever type is used to declare file
3572 modes for system calls.
3575 This variable is used internally by Configure to determine the
3576 full pathname (if any) of the more program. After Configure runs,
3577 the value is reset to a plain "more" and is not useful.
3579 multiarch (multiarch.U):
3580 This variable conditionally defines the MULTIARCH symbol
3581 which signifies the presence of multiplatform files.
3582 This is normally set by hints files.
3585 This variable is defined but not used by Configure.
3586 The value is a plain '' and is not useful.
3588 myarchname (archname.U):
3589 This variable holds the architecture name computed by Configure in
3590 a previous run. It is not intended to be perused by any user and
3591 should never be set in a hint file.
3593 mydomain (myhostname.U):
3594 This variable contains the eventual value of the MYDOMAIN symbol,
3595 which is the domain of the host the program is going to run on.
3596 The domain must be appended to myhostname to form a complete host name.
3597 The dot comes with mydomain, and need not be supplied by the program.
3599 myhostname (myhostname.U):
3600 This variable contains the eventual value of the MYHOSTNAME symbol,
3601 which is the name of the host the program is going to run on.
3602 The domain is not kept with hostname, but must be gotten from mydomain.
3603 The dot comes with mydomain, and need not be supplied by the program.
3605 myuname (Oldconfig.U):
3606 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3607 pseudo variables assignments in the output are stripped, thank you. The
3608 whole thing is then lower-cased.
3611 This variable contains the '-n' flag if that is what causes the echo
3612 command to suppress newline. Otherwise it is null. Correct usage is
3613 $echo $n "prompt for a question: $c".
3615 need_va_copy (need_va_copy.U):
3616 This symbol, if defined, indicates that the system stores
3617 the variable argument list datatype, va_list, in a format
3618 that cannot be copied by simple assignment, so that some
3619 other means must be used when copying is required.
3620 As such systems vary in their provision (or non-provision)
3621 of copying mechanisms, handy.h defines a platform-
3622 independent macro, Perl_va_copy(src, dst), to do the job.
3624 netdb_hlen_type (netdbtype.U):
3625 This variable holds the type used for the 2nd argument to
3626 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3627 This is only useful if you have gethostbyaddr(), naturally.
3629 netdb_host_type (netdbtype.U):
3630 This variable holds the type used for the 1st argument to
3631 gethostbyaddr(). Usually, this is char * or void *, possibly
3632 with or without a const prefix.
3633 This is only useful if you have gethostbyaddr(), naturally.
3635 netdb_name_type (netdbtype.U):
3636 This variable holds the type used for the argument to
3637 gethostbyname(). Usually, this is char * or const char *.
3638 This is only useful if you have gethostbyname(), naturally.
3640 netdb_net_type (netdbtype.U):
3641 This variable holds the type used for the 1st argument to
3642 getnetbyaddr(). Usually, this is int or long.
3643 This is only useful if you have getnetbyaddr(), naturally.
3646 This variable is used internally by Configure to determine the
3647 full pathname (if any) of the nm program. After Configure runs,
3648 the value is reset to a plain "nm" and is not useful.
3651 This variable holds the options that may be necessary for nm.
3653 nm_so_opt (usenm.U):
3654 This variable holds the options that may be necessary for nm
3655 to work on a shared library but that can not be used on an
3656 archive library. Currently, this is only used by Linux, where
3657 nm --dynamic is *required* to get symbols from an ELF library which
3658 has been stripped, but nm --dynamic is *fatal* on an archive library.
3659 Maybe Linux should just always set usenm=false.
3661 nonxs_ext (Extensions.U):
3662 This variable holds a list of all non-xs extensions included
3663 in the package. All of them will be built.
3666 This variable is used internally by Configure to determine the
3667 full pathname (if any) of the nroff program. After Configure runs,
3668 the value is reset to a plain "nroff" and is not useful.
3670 nv_preserves_uv_bits (perlxv.U):
3671 This variable indicates how many of bits type uvtype
3672 a variable nvtype can preserve.
3674 nveformat (perlxvf.U):
3675 This variable contains the format string used for printing
3676 a Perl NV using %e-ish floating point format.
3678 nvEUformat (perlxvf.U):
3679 This variable contains the format string used for printing
3680 a Perl NV using %E-ish floating point format.
3682 nvfformat (perlxvf.U):
3683 This variable confains the format string used for printing
3684 a Perl NV using %f-ish floating point format.
3686 nvFUformat (perlxvf.U):
3687 This variable confains the format string used for printing
3688 a Perl NV using %F-ish floating point format.
3690 nvgformat (perlxvf.U):
3691 This variable contains the format string used for printing
3692 a Perl NV using %g-ish floating point format.
3694 nvGUformat (perlxvf.U):
3695 This variable contains the format string used for printing
3696 a Perl NV using %G-ish floating point format.
3699 This variable is the size of an NV in bytes.
3702 This variable contains the C type used for Perl's NV.
3704 o_nonblock (nblock_io.U):
3705 This variable bears the symbol value to be used during open() or fcntl()
3706 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3707 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3708 but that is only supported by some devices.
3711 This is an old synonym for _o.
3713 old_pthread_create_joinable (d_pthrattrj.U):
3714 This variable defines the constant to use for creating joinable
3715 (aka undetached) pthreads. Unused if pthread.h defines
3716 PTHREAD_CREATE_JOINABLE. If used, possible values are
3717 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3719 optimize (ccflags.U):
3720 This variable contains any optimizer/debugger flag that should be used.
3721 It is up to the Makefile to use it.
3723 orderlib (orderlib.U):
3724 This variable is "true" if the components of libraries must be ordered
3725 (with `lorder $* | tsort`) before placing them in an archive. Set to
3726 "false" if ranlib or ar can generate random libraries.
3728 osname (Oldconfig.U):
3729 This variable contains the operating system name (e.g. sunos,
3730 solaris, hpux, etc.). It can be useful later on for setting
3731 defaults. Any spaces are replaced with underscores. It is set
3732 to a null string if we can't figure it out.
3734 osvers (Oldconfig.U):
3735 This variable contains the operating system version (e.g.
3736 4.1.3, 5.2, etc.). It is primarily used for helping select
3737 an appropriate hints file, but might be useful elsewhere for
3738 setting defaults. It is set to '' if we can't figure it out.
3739 We try to be flexible about how much of the version number
3740 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3741 same for this package, hints files might just be os_4.0 or
3742 os_4.1, etc., not keeping separate files for each little release.
3744 otherlibdirs (otherlibdirs.U):
3745 This variable contains a colon-separated set of paths for the perl
3746 binary to search for additional library files or modules.
3747 These directories will be tacked to the end of @INC.
3748 Perl will automatically search below each path for version-
3749 and architecture-specific directories. See inc_version_list
3751 A value of ' ' means 'none' and is used to preserve this value
3752 for the next run through Configure.
3754 package (package.U):
3755 This variable contains the name of the package being constructed.
3756 It is primarily intended for the use of later Configure units.
3759 This variable contains the name of the preferred pager on the system.
3760 Usual values are (the full pathnames of) more, less, pg, or cat.
3763 This variable contains a command that produces the text of the
3764 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3765 "ypcat passwd" when NIS is used.
3766 On some systems, such as os390, there may be no equivalent
3767 command, in which case this variable is unset.
3769 patchlevel (patchlevel.U):
3770 The patchlevel level of this package.
3771 The value of patchlevel comes from the patchlevel.h file.
3772 In a version number such as 5.6.1, this is the "6".
3773 In patchlevel.h, this is referred to as "PERL_VERSION".
3776 This is an old synonym for p_ in Head.U, the character
3777 used to separate elements in the command shell search PATH.
3780 This variable contains the full path (if any) to a previously
3781 installed perl5.005 or later suitable for running the script
3782 to determine inc_version_list.
3785 This variable is defined but not used by Configure.
3786 The value is a plain '' and is not useful.
3788 perl_patchlevel (patchlevel.U):
3789 This is the Perl patch level, a numeric change identifier,
3790 as defined by whichever source code maintenance system
3791 is used to maintain the patches; currently Perforce.
3792 It does not correlate with the Perl version numbers or
3793 the maintenance versus development dichotomy except
3794 by also being increasing.
3796 PERL_REVISION (Oldsyms.U):
3797 In a Perl version number such as 5.6.2, this is the 5.
3798 This value is manually set in patchlevel.h
3800 PERL_SUBVERSION (Oldsyms.U):
3801 In a Perl version number such as 5.6.2, this is the 2.
3802 Values greater than 50 represent potentially unstable
3803 development subversions.
3804 This value is manually set in patchlevel.h
3806 PERL_VERSION (Oldsyms.U):
3807 In a Perl version number such as 5.6.2, this is the 6.
3808 This value is manually set in patchlevel.h
3810 perladmin (perladmin.U):
3811 Electronic mail address of the perl5 administrator.
3814 The list of libraries needed by Perl only (any libraries needed
3815 by extensions only will by dropped, if using dynamic loading).
3817 perlpath (perlpath.U):
3818 This variable contains the eventual value of the PERLPATH symbol,
3819 which contains the name of the perl interpreter to be used in
3820 shell scripts and in the "eval 'exec'" idiom. This variable is
3821 not necessarily the pathname of the file containing the perl
3822 interpreter; you must append the executable extension (_exe) if
3823 it is not already present. Note that Perl code that runs during
3824 the Perl build process cannot reference this variable, as Perl
3825 may not have been installed, or even if installed, may be a
3826 different version of Perl.
3829 This variable is used internally by Configure to determine the
3830 full pathname (if any) of the pg program. After Configure runs,
3831 the value is reset to a plain "pg" and is not useful.
3833 phostname (myhostname.U):
3834 This variable contains the eventual value of the PHOSTNAME symbol,
3835 which is a command that can be fed to popen() to get the host name.
3836 The program should probably not presume that the domain is or isn't
3839 pidtype (pidtype.U):
3840 This variable defines PIDTYPE to be something like pid_t, int,
3841 ushort, or whatever type is used to declare process ids in the kernel.
3844 Holds the private path used by Configure to find out the libraries.
3845 Its value is prepend to libpth. This variable takes care of special
3846 machines, like the mips. Usually, it should be empty.
3849 This variable is defined but not used by Configure.
3850 The value is a plain '' and is not useful.
3853 This variable is defined but not used by Configure.
3854 The value is a plain '' and is not useful.
3857 This variable holds the name of the directory below which the
3858 user will install the package. Usually, this is /usr/local, and
3859 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3860 man pages in /usr/local/man, etc. It is only used to set defaults
3861 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3863 prefixexp (prefix.U):
3864 This variable holds the full absolute path of the directory below
3865 which the user will install the package. Derived from prefix.
3867 privlib (privlib.U):
3868 This variable contains the eventual value of the PRIVLIB symbol,
3869 which is the name of the private library for this package. It may
3870 have a ~ on the front. It is up to the makefile to eventually create
3871 this directory while performing installation (with ~ substitution).
3873 privlibexp (privlib.U):
3874 This variable is the ~name expanded version of privlib, so that you
3875 may use it directly in Makefiles or shell scripts.
3877 procselfexe (d_procselfexe.U):
3878 If d_procselfexe is defined, $procselfexe is the filename
3879 of the symbolic link pointing to the absolute pathname of
3880 the executing program.
3882 prototype (prototype.U):
3883 This variable holds the eventual value of CAN_PROTOTYPE, which
3884 indicates the C compiler can handle funciton prototypes.
3886 ptrsize (ptrsize.U):
3887 This variable contains the value of the PTRSIZE symbol, which
3888 indicates to the C program how many bytes there are in a pointer.
3890 quadkind (quadtype.U):
3891 This variable, if defined, encodes the type of a quad:
3892 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3894 quadtype (quadtype.U):
3895 This variable defines Quad_t to be something like long, int,
3896 long long, int64_t, or whatever type is used for 64-bit integers.
3898 randbits (randfunc.U):
3899 Indicates how many bits are produced by the function used to
3900 generate normalized random numbers.
3902 randfunc (randfunc.U):
3903 Indicates the name of the random number function to use.
3904 Values include drand48, random, and rand. In C programs,
3905 the 'Drand01' macro is defined to generate uniformly distributed
3906 random numbers over the range [0., 1.[ (see drand01 and nrand).
3908 random_r_proto (d_random_r.U):
3909 This variable encodes the prototype of random_r.
3910 It is zero if d_random_r is undef, and one of the
3911 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
3914 randseedtype (randfunc.U):
3915 Indicates the type of the argument of the seedfunc.
3917 ranlib (orderlib.U):
3918 This variable is set to the pathname of the ranlib program, if it is
3919 needed to generate random libraries. Set to ":" if ar can generate
3920 random libraries or if random libraries are not supported
3922 rd_nodata (nblock_io.U):
3923 This variable holds the return code from read() when no data is
3924 present. It should be -1, but some systems return 0 when O_NDELAY is
3925 used, which is a shame because you cannot make the difference between
3926 no data and an EOF.. Sigh!
3928 readdir64_r_proto (d_readdir64_r.U):
3929 This variable encodes the prototype of readdir64_r.
3930 It is zero if d_readdir64_r is undef, and one of the
3931 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
3934 readdir_r_proto (d_readdir_r.U):
3935 This variable encodes the prototype of readdir_r.
3936 It is zero if d_readdir_r is undef, and one of the
3937 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
3940 revision (patchlevel.U):
3941 The value of revision comes from the patchlevel.h file.
3942 In a version number such as 5.6.1, this is the "5".
3943 In patchlevel.h, this is referred to as "PERL_REVISION".
3946 This variable is used internally by Configure to determine the
3947 full pathname (if any) of the rm program. After Configure runs,
3948 the value is reset to a plain "rm" and is not useful.
3951 This variable is defined but not used by Configure.
3952 The value is a plain '' and is not useful.
3955 This variable contains the command used by Configure
3956 to copy and execute a cross-compiled executable in the
3957 target host. Useful and available only during Perl build.
3958 Empty string '' if not cross-compiling.
3961 This variable contains 'true' or 'false' depending whether the
3962 nm extraction should be performed or not, according to the value
3963 of usenm and the flags on the Configure command line.
3965 sched_yield (d_pthread_y.U):
3966 This variable defines the way to yield the execution
3967 of the current thread.
3969 scriptdir (scriptdir.U):
3970 This variable holds the name of the directory in which the user wants
3971 to put publicly scripts for the package in question. It is either
3972 the same directory as for binaries, or a special one that can be
3973 mounted across different architectures, like /usr/share. Programs
3974 must be prepared to deal with ~name expansion.
3976 scriptdirexp (scriptdir.U):
3977 This variable is the same as scriptdir, but is filename expanded
3978 at configuration time, for programs not wanting to bother with it.
3981 This variable is used internally by Configure to determine the
3982 full pathname (if any) of the sed program. After Configure runs,
3983 the value is reset to a plain "sed" and is not useful.
3985 seedfunc (randfunc.U):
3986 Indicates the random number generating seed function.
3987 Values include srand48, srandom, and srand.
3989 selectminbits (selectminbits.U):
3990 This variable holds the minimum number of bits operated by select.
3991 That is, if you do select(n, ...), how many bits at least will be
3992 cleared in the masks if some activity is detected. Usually this
3993 is either n or 32*ceil(n/32), especially many little-endians do
3994 the latter. This is only useful if you have select(), naturally.
3996 selecttype (selecttype.U):
3997 This variable holds the type used for the 2nd, 3rd, and 4th
3998 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3999 is defined, and 'int *' otherwise. This is only useful if you
4000 have select(), naturally.
4003 This variable is defined but not used by Configure.
4004 The value is a plain '' and is not useful.
4006 setgrent_r_proto (d_setgrent_r.U):
4007 This variable encodes the prototype of setgrent_r.
4008 It is zero if d_setgrent_r is undef, and one of the
4009 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4012 sethostent_r_proto (d_sethostent_r.U):
4013 This variable encodes the prototype of sethostent_r.
4014 It is zero if d_sethostent_r is undef, and one of the
4015 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4018 setlocale_r_proto (d_setlocale_r.U):
4019 This variable encodes the prototype of setlocale_r.
4020 It is zero if d_setlocale_r is undef, and one of the
4021 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4024 setnetent_r_proto (d_setnetent_r.U):
4025 This variable encodes the prototype of setnetent_r.
4026 It is zero if d_setnetent_r is undef, and one of the
4027 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4030 setprotoent_r_proto (d_setprotoent_r.U):
4031 This variable encodes the prototype of setprotoent_r.
4032 It is zero if d_setprotoent_r is undef, and one of the
4033 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4036 setpwent_r_proto (d_setpwent_r.U):
4037 This variable encodes the prototype of setpwent_r.
4038 It is zero if d_setpwent_r is undef, and one of the
4039 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4042 setservent_r_proto (d_setservent_r.U):
4043 This variable encodes the prototype of setservent_r.
4044 It is zero if d_setservent_r is undef, and one of the
4045 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4049 This variable contains the full pathname of the shell used
4050 on this system to execute Bourne shell scripts. Usually, this will be
4051 /bin/sh, though it's possible that some systems will have /bin/ksh,
4052 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4054 This unit comes before Options.U, so you can't set sh with a '-D'
4055 option, though you can override this (and startsh)
4056 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4059 This variable is defined but not used by Configure.
4060 The value is a plain '' and is not useful.
4062 sharpbang (spitshell.U):
4063 This variable contains the string #! if this system supports that
4066 shmattype (d_shmat.U):
4067 This symbol contains the type of pointer returned by shmat().
4068 It can be 'void *' or 'char *'.
4070 shortsize (intsize.U):
4071 This variable contains the value of the SHORTSIZE symbol which
4072 indicates to the C program how many bytes there are in a short.
4074 shrpenv (libperl.U):
4075 If the user builds a shared libperl.so, then we need to tell the
4076 'perl' executable where it will be able to find the installed libperl.so.
4077 One way to do this on some systems is to set the environment variable
4078 LD_RUN_PATH to the directory that will be the final location of the
4079 shared libperl.so. The makefile can use this with something like
4080 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4082 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4085 See the main perl Makefile.SH for actual working usage.
4086 Alternatively, we might be able to use a command line option such
4087 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4088 $archlibexp/CORE (Linux).
4090 shsharp (spitshell.U):
4091 This variable tells further Configure units whether your sh can
4094 sig_count (sig_name.U):
4095 This variable holds a number larger than the largest valid
4096 signal number. This is usually the same as the NSIG macro.
4098 sig_name (sig_name.U):
4099 This variable holds the signal names, space separated. The leading
4100 SIG in signal name is removed. A ZERO is prepended to the list.
4101 This is currently not used, sig_name_init is used instead.
4103 sig_name_init (sig_name.U):
4104 This variable holds the signal names, enclosed in double quotes and
4105 separated by commas, suitable for use in the SIG_NAME definition
4106 below. A "ZERO" is prepended to the list, and the list is
4107 terminated with a plain 0. The leading SIG in signal names
4108 is removed. See sig_num.
4110 sig_num (sig_name.U):
4111 This variable holds the signal numbers, space separated. A ZERO is
4112 prepended to the list (corresponding to the fake SIGZERO).
4113 Those numbers correspond to the value of the signal listed
4114 in the same place within the sig_name list.
4115 This is currently not used, sig_num_init is used instead.
4117 sig_num_init (sig_name.U):
4118 This variable holds the signal numbers, enclosed in double quotes and
4119 separated by commas, suitable for use in the SIG_NUM definition
4120 below. A "ZERO" is prepended to the list, and the list is
4121 terminated with a plain 0.
4123 sig_size (sig_name.U):
4124 This variable contains the number of elements of the sig_name
4127 signal_t (d_voidsig.U):
4128 This variable holds the type of the signal handler (void or int).
4130 sitearch (sitearch.U):
4131 This variable contains the eventual value of the SITEARCH symbol,
4132 which is the name of the private library for this package. It may
4133 have a ~ on the front. It is up to the makefile to eventually create
4134 this directory while performing installation (with ~ substitution).
4135 The standard distribution will put nothing in this directory.
4136 After perl has been installed, users may install their own local
4137 architecture-dependent modules in this directory with
4138 MakeMaker Makefile.PL
4139 or equivalent. See INSTALL for details.
4141 sitearchexp (sitearch.U):
4142 This variable is the ~name expanded version of sitearch, so that you
4143 may use it directly in Makefiles or shell scripts.
4145 sitebin (sitebin.U):
4146 This variable holds the name of the directory in which the user wants
4147 to put add-on publicly executable files for the package in question. It
4148 is most often a local directory such as /usr/local/bin. Programs using
4149 this variable must be prepared to deal with ~name substitution.
4150 The standard distribution will put nothing in this directory.
4151 After perl has been installed, users may install their own local
4152 executables in this directory with
4153 MakeMaker Makefile.PL
4154 or equivalent. See INSTALL for details.
4156 sitebinexp (sitebin.U):
4157 This is the same as the sitebin variable, but is filename expanded at
4158 configuration time, for use in your makefiles.
4160 sitehtml1dir (sitehtml1dir.U):
4161 This variable contains the name of the directory in which site-specific
4162 html source pages are to be put. It is the responsibility of the
4163 Makefile.SH to get the value of this into the proper command.
4164 You must be prepared to do the ~name expansion yourself.
4165 The standard distribution will put nothing in this directory.
4166 After perl has been installed, users may install their own local
4167 html pages in this directory with
4168 MakeMaker Makefile.PL
4169 or equivalent. See INSTALL for details.
4171 sitehtml1direxp (sitehtml1dir.U):
4172 This variable is the same as the sitehtml1dir variable, but is filename
4173 expanded at configuration time, for convenient use in makefiles.
4175 sitehtml3dir (sitehtml3dir.U):
4176 This variable contains the name of the directory in which site-specific
4177 library html source pages are to be put. It is the responsibility of the
4178 Makefile.SH to get the value of this into the proper command.
4179 You must be prepared to do the ~name expansion yourself.
4180 The standard distribution will put nothing in this directory.
4181 After perl has been installed, users may install their own local
4182 library html pages in this directory with
4183 MakeMaker Makefile.PL
4184 or equivalent. See INSTALL for details.
4186 sitehtml3direxp (sitehtml3dir.U):
4187 This variable is the same as the sitehtml3dir variable, but is filename
4188 expanded at configuration time, for convenient use in makefiles.
4190 sitelib (sitelib.U):
4191 This variable contains the eventual value of the SITELIB symbol,
4192 which is the name of the private library for this package. It may
4193 have a ~ on the front. It is up to the makefile to eventually create
4194 this directory while performing installation (with ~ substitution).
4195 The standard distribution will put nothing in this directory.
4196 After perl has been installed, users may install their own local
4197 architecture-independent modules in this directory with
4198 MakeMaker Makefile.PL
4199 or equivalent. See INSTALL for details.
4201 sitelib_stem (sitelib.U):
4202 This variable is $sitelibexp with any trailing version-specific component
4203 removed. The elements in inc_version_list (inc_version_list.U) can
4204 be tacked onto this variable to generate a list of directories to search.
4206 sitelibexp (sitelib.U):
4207 This variable is the ~name expanded version of sitelib, so that you
4208 may use it directly in Makefiles or shell scripts.
4210 siteman1dir (siteman1dir.U):
4211 This variable contains the name of the directory in which site-specific
4212 manual source pages are to be put. It is the responsibility of the
4213 Makefile.SH to get the value of this into the proper command.
4214 You must be prepared to do the ~name expansion yourself.
4215 The standard distribution will put nothing in this directory.
4216 After perl has been installed, users may install their own local
4217 man1 pages in this directory with
4218 MakeMaker Makefile.PL
4219 or equivalent. See INSTALL for details.
4221 siteman1direxp (siteman1dir.U):
4222 This variable is the same as the siteman1dir variable, but is filename
4223 expanded at configuration time, for convenient use in makefiles.
4225 siteman3dir (siteman3dir.U):
4226 This variable contains the name of the directory in which site-specific
4227 library man source pages are to be put. It is the responsibility of the
4228 Makefile.SH to get the value of this into the proper command.
4229 You must be prepared to do the ~name expansion yourself.
4230 The standard distribution will put nothing in this directory.
4231 After perl has been installed, users may install their own local
4232 man3 pages in this directory with
4233 MakeMaker Makefile.PL
4234 or equivalent. See INSTALL for details.
4236 siteman3direxp (siteman3dir.U):
4237 This variable is the same as the siteman3dir variable, but is filename
4238 expanded at configuration time, for convenient use in makefiles.
4240 siteprefix (siteprefix.U):
4241 This variable holds the full absolute path of the directory below
4242 which the user will install add-on packages.
4243 See INSTALL for usage and examples.
4245 siteprefixexp (siteprefix.U):
4246 This variable holds the full absolute path of the directory below
4247 which the user will install add-on packages. Derived from siteprefix.
4249 sitescript (sitescript.U):
4250 This variable holds the name of the directory in which the user wants
4251 to put add-on publicly executable files for the package in question. It
4252 is most often a local directory such as /usr/local/bin. Programs using
4253 this variable must be prepared to deal with ~name substitution.
4254 The standard distribution will put nothing in this directory.
4255 After perl has been installed, users may install their own local
4256 scripts in this directory with
4257 MakeMaker Makefile.PL
4258 or equivalent. See INSTALL for details.
4260 sitescriptexp (sitescript.U):
4261 This is the same as the sitescript variable, but is filename expanded at
4262 configuration time, for use in your makefiles.
4264 sizesize (sizesize.U):
4265 This variable contains the size of a sizetype in bytes.
4267 sizetype (sizetype.U):
4268 This variable defines sizetype to be something like size_t,
4269 unsigned long, or whatever type is used to declare length
4270 parameters for string functions.
4273 This variable is defined but not used by Configure.
4274 The value is a plain '' and is not useful.
4277 This variable is defined but not used by Configure.
4278 The value is a plain '' and is not useful.
4281 This variable holds the extension used to identify shared libraries
4282 (also known as shared objects) on the system. Usually set to 'so'.
4284 sockethdr (d_socket.U):
4285 This variable has any cpp '-I' flags needed for socket support.
4287 socketlib (d_socket.U):
4288 This variable has the names of any libraries needed for socket support.
4290 socksizetype (socksizetype.U):
4291 This variable holds the type used for the size argument
4292 for various socket calls like accept. Usual values include
4293 socklen_t, size_t, and int.
4296 This variable is used internally by Configure to determine the
4297 full pathname (if any) of the sort program. After Configure runs,
4298 the value is reset to a plain "sort" and is not useful.
4300 spackage (package.U):
4301 This variable contains the name of the package being constructed,
4302 with the first letter uppercased, i.e. suitable for starting
4305 spitshell (spitshell.U):
4306 This variable contains the command necessary to spit out a runnable
4307 shell on this system. It is either cat or a grep '-v' for # comments.
4309 sPRId64 (quadfio.U):
4310 This variable, if defined, contains the string used by stdio to
4311 format 64-bit decimal numbers (format 'd') for output.
4313 sPRIeldbl (longdblfio.U):
4314 This variable, if defined, contains the string used by stdio to
4315 format long doubles (format 'e') for output.
4317 sPRIEUldbl (longdblfio.U):
4318 This variable, if defined, contains the string used by stdio to
4319 format long doubles (format 'E') for output.
4320 The 'U' in the name is to separate this from sPRIeldbl so that even
4321 case-blind systems can see the difference.
4323 sPRIfldbl (longdblfio.U):
4324 This variable, if defined, contains the string used by stdio to
4325 format long doubles (format 'f') for output.
4327 sPRIFUldbl (longdblfio.U):
4328 This variable, if defined, contains the string used by stdio to
4329 format long doubles (format 'F') for output.
4330 The 'U' in the name is to separate this from sPRIfldbl so that even
4331 case-blind systems can see the difference.
4333 sPRIgldbl (longdblfio.U):
4334 This variable, if defined, contains the string used by stdio to
4335 format long doubles (format 'g') for output.
4337 sPRIGUldbl (longdblfio.U):
4338 This variable, if defined, contains the string used by stdio to
4339 format long doubles (format 'G') for output.
4340 The 'U' in the name is to separate this from sPRIgldbl so that even
4341 case-blind systems can see the difference.
4343 sPRIi64 (quadfio.U):
4344 This variable, if defined, contains the string used by stdio to
4345 format 64-bit decimal numbers (format 'i') for output.
4347 sPRIo64 (quadfio.U):
4348 This variable, if defined, contains the string used by stdio to
4349 format 64-bit octal numbers (format 'o') for output.
4351 sPRIu64 (quadfio.U):
4352 This variable, if defined, contains the string used by stdio to
4353 format 64-bit unsigned decimal numbers (format 'u') for output.
4355 sPRIx64 (quadfio.U):
4356 This variable, if defined, contains the string used by stdio to
4357 format 64-bit hexadecimal numbers (format 'x') for output.
4359 sPRIXU64 (quadfio.U):
4360 This variable, if defined, contains the string used by stdio to
4361 format 64-bit hExADECimAl numbers (format 'X') for output.
4362 The 'U' in the name is to separate this from sPRIx64 so that even
4363 case-blind systems can see the difference.
4365 srand48_r_proto (d_srand48_r.U):
4366 This variable encodes the prototype of srand48_r.
4367 It is zero if d_srand48_r is undef, and one of the
4368 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4371 srandom_r_proto (d_srandom_r.U):
4372 This variable encodes the prototype of srandom_r.
4373 It is zero if d_srandom_r is undef, and one of the
4374 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4378 This variable holds the path to the package source. It is up to
4379 the Makefile to use this variable and set VPATH accordingly to
4380 find the sources remotely.
4382 sSCNfldbl (longdblfio.U):
4383 This variable, if defined, contains the string used by stdio to
4384 format long doubles (format 'f') for input.
4386 ssizetype (ssizetype.U):
4387 This variable defines ssizetype to be something like ssize_t,
4388 long or int. It is used by functions that return a count
4389 of bytes or an error condition. It must be a signed type.
4390 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4392 startperl (startperl.U):
4393 This variable contains the string to put on the front of a perl
4394 script to make sure (hopefully) that it runs with perl and not some
4395 shell. Of course, that leading line must be followed by the classical
4397 eval 'exec perl -S $0 ${1+"$@"}'
4398 if $running_under_some_shell;
4399 to guarantee perl startup should the shell execute the script. Note
4400 that this magic incatation is not understood by csh.
4402 startsh (startsh.U):
4403 This variable contains the string to put on the front of a shell
4404 script to make sure (hopefully) that it runs with sh and not some
4407 static_ext (Extensions.U):
4408 This variable holds a list of XS extension files we want to
4409 link statically into the package. It is used by Makefile.
4411 stdchar (stdchar.U):
4412 This variable conditionally defines STDCHAR to be the type of char
4413 used in stdio.h. It has the values "unsigned char" or "char".
4415 stdio_base (d_stdstdio.U):
4416 This variable defines how, given a FILE pointer, fp, to access the
4417 _base field (or equivalent) of stdio.h's FILE structure. This will
4418 be used to define the macro FILE_base(fp).
4420 stdio_bufsiz (d_stdstdio.U):
4421 This variable defines how, given a FILE pointer, fp, to determine
4422 the number of bytes store in the I/O buffer pointer to by the
4423 _base field (or equivalent) of stdio.h's FILE structure. This will
4424 be used to define the macro FILE_bufsiz(fp).
4426 stdio_cnt (d_stdstdio.U):
4427 This variable defines how, given a FILE pointer, fp, to access the
4428 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4429 be used to define the macro FILE_cnt(fp).
4431 stdio_filbuf (d_stdstdio.U):
4432 This variable defines how, given a FILE pointer, fp, to tell
4433 stdio to refill its internal buffers (?). This will
4434 be used to define the macro FILE_filbuf(fp).
4436 stdio_ptr (d_stdstdio.U):
4437 This variable defines how, given a FILE pointer, fp, to access the
4438 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4439 be used to define the macro FILE_ptr(fp).
4441 stdio_stream_array (stdio_streams.U):
4442 This variable tells the name of the array holding the stdio streams.
4443 Usual values include _iob, __iob, and __sF.
4445 strerror_r_proto (d_strerror_r.U):
4446 This variable encodes the prototype of strerror_r.
4447 It is zero if d_strerror_r is undef, and one of the
4448 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4451 strings (i_string.U):
4452 This variable holds the full path of the string header that will be
4453 used. Typically /usr/include/string.h or /usr/include/strings.h.
4456 This variable is defined but not used by Configure.
4457 The value is a plain '' and is not useful.
4459 subversion (patchlevel.U):
4460 The subversion level of this package.
4461 The value of subversion comes from the patchlevel.h file.
4462 In a version number such as 5.6.1, this is the "1".
4463 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4464 This is unique to perl.
4467 This variable holds the place where the manual is located on this
4468 system. It is not the place where the user wants to put his manual
4469 pages. Rather it is the place where Configure may look to find manual
4470 for unix commands (section 1 of the manual usually). See mansrc.
4473 This variable is defined but not used by Configure.
4474 The value is a plain '' and is not useful.
4477 This variable is defined but not used by Configure.
4478 The value is a plain '' and is not useful.
4480 targetarch (Cross.U):
4481 If cross-compiling, this variable contains the target architecture.
4482 If not, this will be empty.
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.
4493 This variable is used internally by Configure to determine the
4494 full pathname (if any) of the test program. After Configure runs,
4495 the value is reset to a plain "test" and is not useful.
4497 timeincl (i_time.U):
4498 This variable holds the full path of the included time header(s).
4500 timetype (d_time.U):
4501 This variable holds the type returned by time(). It can be long,
4502 or time_t on BSD sites (in which case <sys/types.h> should be
4503 included). Anyway, the type Time_t should be used.
4505 tmpnam_r_proto (d_tmpnam_r.U):
4506 This variable encodes the prototype of tmpnam_r.
4507 It is zero if d_tmpnam_r is undef, and one of the
4508 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4512 This variable contains the command used by Configure
4513 to copy to from the target host. Useful and available
4514 only during Perl build.
4515 The string ':' if not cross-compiling.
4518 This variable is used internally by Configure to determine the
4519 full pathname (if any) of the touch program. After Configure runs,
4520 the value is reset to a plain "touch" and is not useful.
4523 This variable is used internally by Configure to determine the
4524 full pathname (if any) of the tr program. After Configure runs,
4525 the value is reset to a plain "tr" and is not useful.
4528 This variable contains the value to be passed to the tr(1)
4529 command to transliterate a newline. Typical values are
4530 '\012' and '\n'. This is needed for EBCDIC systems where
4531 newline is not necessarily '\012'.
4534 This variable is defined but not used by Configure.
4535 The value is a plain '' and is not useful.
4537 ttyname_r_proto (d_ttyname_r.U):
4538 This variable encodes the prototype of ttyname_r.
4539 It is zero if d_ttyname_r is undef, and one of the
4540 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4544 This variable is the size of an U16 in bytes.
4547 This variable contains the C type used for Perl's U16.
4550 This variable is the size of an U32 in bytes.
4553 This variable contains the C type used for Perl's U32.
4556 This variable is the size of an U64 in bytes.
4559 This variable contains the C type used for Perl's U64.
4562 This variable is the size of an U8 in bytes.
4565 This variable contains the C type used for Perl's U8.
4568 This variable contains the format string used for printing a Uid_t.
4570 uidsign (uidsign.U):
4571 This variable contains the signedness of a uidtype.
4572 1 for unsigned, -1 for signed.
4574 uidsize (uidsize.U):
4575 This variable contains the size of a uidtype in bytes.
4577 uidtype (uidtype.U):
4578 This variable defines Uid_t to be something like uid_t, int,
4579 ushort, or whatever type is used to declare user ids in the kernel.
4582 This variable is used internally by Configure to determine the
4583 full pathname (if any) of the uname program. After Configure runs,
4584 the value is reset to a plain "uname" and is not useful.
4587 This variable is used internally by Configure to determine the
4588 full pathname (if any) of the uniq program. After Configure runs,
4589 the value is reset to a plain "uniq" and is not useful.
4591 uquadtype (quadtype.U):
4592 This variable defines Uquad_t to be something like unsigned long,
4593 unsigned int, unsigned long long, uint64_t, or whatever type is
4594 used for 64-bit integers.
4596 use5005threads (usethreads.U):
4597 This variable conditionally defines the USE_5005THREADS symbol,
4598 and indicates that Perl should be built to use the 5.005-based
4599 threading implementation.
4601 use64bitall (use64bits.U):
4602 This variable conditionally defines the USE_64_BIT_ALL symbol,
4603 and indicates that 64-bit integer types should be used
4604 when available. The maximal possible
4605 64-bitness is employed: LP64 or ILP64, meaning that you will
4606 be able to use more than 2 gigabytes of memory. This mode is
4607 even more binary incompatible than USE_64_BIT_INT. You may not
4608 be able to run the resulting executable in a 32-bit CPU at all or
4609 you may need at least to reboot your OS to 64-bit mode.
4611 use64bitint (use64bits.U):
4612 This variable conditionally defines the USE_64_BIT_INT symbol,
4613 and indicates that 64-bit integer types should be used
4614 when available. The minimal possible 64-bitness
4615 is employed, just enough to get 64-bit integers into Perl.
4616 This may mean using for example "long longs", while your memory
4617 may still be limited to 2 gigabytes.
4619 usecrosscompile (Cross.U):
4620 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4621 and indicates that Perl has been cross-compiled.
4624 This variable indicates if the system supports dynamic
4625 loading of some sort. See also dlsrc and dlobj.
4627 usefaststdio (usefaststdio.U):
4628 This variable conditionally defines the USE_FAST_STDIO symbol,
4629 and indicates that Perl should be built to use 'fast stdio'.
4630 Defaults to define in Perls 5.8 and earlier, to undef later.
4632 useithreads (usethreads.U):
4633 This variable conditionally defines the USE_ITHREADS symbol,
4634 and indicates that Perl should be built to use the interpreter-based
4635 threading implementation.
4637 uselargefiles (uselfs.U):
4638 This variable conditionally defines the USE_LARGE_FILES symbol,
4639 and indicates that large file interfaces should be used when
4642 uselongdouble (uselongdbl.U):
4643 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4644 and indicates that long doubles should be used when available.
4646 usemallocwrap (mallocsrc.U):
4647 This variable contains y if we are wrapping malloc to prevent
4648 integer overflow during size calculations.
4650 usemorebits (usemorebits.U):
4651 This variable conditionally defines the USE_MORE_BITS symbol,
4652 and indicates that explicit 64-bit interfaces and long doubles
4653 should be used when available.
4655 usemultiplicity (usemultiplicity.U):
4656 This variable conditionally defines the MULTIPLICITY symbol,
4657 and indicates that Perl should be built to use multiplicity.
4659 usemymalloc (mallocsrc.U):
4660 This variable contains y if the malloc that comes with this package
4661 is desired over the system's version of malloc. People often include
4662 special versions of malloc for effiency, but such versions are often
4663 less portable. See also mallocsrc and mallocobj.
4664 If this is 'y', then -lmalloc is removed from $libs.
4667 This variable contains 'true' or 'false' depending whether the
4668 nm extraction is wanted or not.
4670 useopcode (Extensions.U):
4671 This variable holds either 'true' or 'false' to indicate
4672 whether the Opcode extension should be used. The sole
4673 use for this currently is to allow an easy mechanism
4674 for users to skip the Opcode extension from the Configure
4677 useperlio (useperlio.U):
4678 This variable conditionally defines the USE_PERLIO symbol,
4679 and indicates that the PerlIO abstraction should be
4682 useposix (Extensions.U):
4683 This variable holds either 'true' or 'false' to indicate
4684 whether the POSIX extension should be used. The sole
4685 use for this currently is to allow an easy mechanism
4686 for hints files to indicate that POSIX will not compile
4687 on a particular system.
4689 usereentrant (usethreads.U):
4690 This variable conditionally defines the USE_REENTRANT_API symbol,
4691 which indicates that the thread code may try to use the various
4692 _r versions of library functions. This is only potentially
4693 meaningful if usethreads is set and is very experimental, it is
4694 not even prompted for.
4696 userelocatableinc (XXX.U):
4697 This variable is set to true to indicate that perl should relocate
4698 @INC entries at runtime based on the path to the perl binary.
4699 Any @INC paths starting ".../" are relocated relative to the directory
4700 containing the perl binary, and a logical cleanup of the path is then
4701 made around the join point (removing "dir/../" pairs)
4704 This variable is set to true when the user agrees to use sfio.
4705 It is set to false when sfio is not available or when the user
4706 explicitely requests not to use sfio. It is here primarily so
4707 that command-line settings can override the auto-detection of
4708 d_sfio without running into a "WHOA THERE".
4710 useshrplib (libperl.U):
4711 This variable is set to 'true' if the user wishes
4712 to build a shared libperl, and 'false' otherwise.
4714 usesocks (usesocks.U):
4715 This variable conditionally defines the USE_SOCKS symbol,
4716 and indicates that Perl should be built to use SOCKS.
4718 usethreads (usethreads.U):
4719 This variable conditionally defines the USE_THREADS symbol,
4720 and indicates that Perl should be built to use threads.
4722 usevendorprefix (vendorprefix.U):
4723 This variable tells whether the vendorprefix
4724 and consequently other vendor* paths are in use.
4726 usevfork (d_vfork.U):
4727 This variable is set to true when the user accepts to use vfork.
4728 It is set to false when no vfork is available or when the user
4729 explicitely requests not to use vfork.
4732 This variable holds the path of the include files, which is
4733 usually /usr/include. It is mainly used by other Configure units.
4736 This variable is defined but not used by Configure.
4737 The value is a plain '' and is not useful.
4739 uvoformat (perlxvf.U):
4740 This variable contains the format string used for printing
4741 a Perl UV as an unsigned octal integer.
4744 This variable is the size of a UV in bytes.
4747 This variable contains the C type used for Perl's UV.
4749 uvuformat (perlxvf.U):
4750 This variable contains the format string used for printing
4751 a Perl UV as an unsigned decimal integer.
4753 uvxformat (perlxvf.U):
4754 This variable contains the format string used for printing
4755 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4757 uvXUformat (perlxvf.U):
4758 This variable contains the format string used for printing
4759 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4761 vendorarch (vendorarch.U):
4762 This variable contains the value of the PERL_VENDORARCH symbol.
4763 It may have a ~ on the front.
4764 The standard distribution will put nothing in this directory.
4765 Vendors who distribute perl may wish to place their own
4766 architecture-dependent modules and extensions in this directory with
4767 MakeMaker Makefile.PL INSTALLDIRS=vendor
4768 or equivalent. See INSTALL for details.
4770 vendorarchexp (vendorarch.U):
4771 This variable is the ~name expanded version of vendorarch, so that you
4772 may use it directly in Makefiles or shell scripts.
4774 vendorbin (vendorbin.U):
4775 This variable contains the eventual value of the VENDORBIN symbol.
4776 It may have a ~ on the front.
4777 The standard distribution will put nothing in this directory.
4778 Vendors who distribute perl may wish to place additional
4779 binaries in this directory with
4780 MakeMaker Makefile.PL INSTALLDIRS=vendor
4781 or equivalent. See INSTALL for details.
4783 vendorbinexp (vendorbin.U):
4784 This variable is the ~name expanded version of vendorbin, so that you
4785 may use it directly in Makefiles or shell scripts.
4787 vendorhtml1dir (vendorhtml1dir.U):
4788 This variable contains the name of the directory for html
4789 pages. It may have a ~ on the front.
4790 The standard distribution will put nothing in this directory.
4791 Vendors who distribute perl may wish to place their own
4792 html pages in this directory with
4793 MakeMaker Makefile.PL INSTALLDIRS=vendor
4794 or equivalent. See INSTALL for details.
4796 vendorhtml1direxp (vendorhtml1dir.U):
4797 This variable is the ~name expanded version of vendorhtml1dir, so that you
4798 may use it directly in Makefiles or shell scripts.
4800 vendorhtml3dir (vendorhtml3dir.U):
4801 This variable contains the name of the directory for html
4802 library pages. It may have a ~ on the front.
4803 The standard distribution will put nothing in this directory.
4804 Vendors who distribute perl may wish to place their own
4805 html pages for modules and extensions in this directory with
4806 MakeMaker Makefile.PL INSTALLDIRS=vendor
4807 or equivalent. See INSTALL for details.
4809 vendorhtml3direxp (vendorhtml3dir.U):
4810 This variable is the ~name expanded version of vendorhtml3dir, so that you
4811 may use it directly in Makefiles or shell scripts.
4813 vendorlib (vendorlib.U):
4814 This variable contains the eventual value of the VENDORLIB symbol,
4815 which is the name of the private library for this package.
4816 The standard distribution will put nothing in this directory.
4817 Vendors who distribute perl may wish to place their own
4818 modules in this directory with
4819 MakeMaker Makefile.PL INSTALLDIRS=vendor
4820 or equivalent. See INSTALL for details.
4822 vendorlib_stem (vendorlib.U):
4823 This variable is $vendorlibexp with any trailing version-specific component
4824 removed. The elements in inc_version_list (inc_version_list.U) can
4825 be tacked onto this variable to generate a list of directories to search.
4827 vendorlibexp (vendorlib.U):
4828 This variable is the ~name expanded version of vendorlib, so that you
4829 may use it directly in Makefiles or shell scripts.
4831 vendorman1dir (vendorman1dir.U):
4832 This variable contains the name of the directory for man1
4833 pages. It may have a ~ on the front.
4834 The standard distribution will put nothing in this directory.
4835 Vendors who distribute perl may wish to place their own
4836 man1 pages in this directory with
4837 MakeMaker Makefile.PL INSTALLDIRS=vendor
4838 or equivalent. See INSTALL for details.
4840 vendorman1direxp (vendorman1dir.U):
4841 This variable is the ~name expanded version of vendorman1dir, so that you
4842 may use it directly in Makefiles or shell scripts.
4844 vendorman3dir (vendorman3dir.U):
4845 This variable contains the name of the directory for man3
4846 pages. It may have a ~ on the front.
4847 The standard distribution will put nothing in this directory.
4848 Vendors who distribute perl may wish to place their own
4849 man3 pages in this directory with
4850 MakeMaker Makefile.PL INSTALLDIRS=vendor
4851 or equivalent. See INSTALL for details.
4853 vendorman3direxp (vendorman3dir.U):
4854 This variable is the ~name expanded version of vendorman3dir, so that you
4855 may use it directly in Makefiles or shell scripts.
4857 vendorprefix (vendorprefix.U):
4858 This variable holds the full absolute path of the directory below
4859 which the vendor will install add-on packages.
4860 See INSTALL for usage and examples.
4862 vendorprefixexp (vendorprefix.U):
4863 This variable holds the full absolute path of the directory below
4864 which the vendor will install add-on packages. Derived from vendorprefix.
4866 vendorscript (vendorscript.U):
4867 This variable contains the eventual value of the VENDORSCRIPT symbol.
4868 It may have a ~ on the front.
4869 The standard distribution will put nothing in this directory.
4870 Vendors who distribute perl may wish to place additional
4871 executable scripts in this directory with
4872 MakeMaker Makefile.PL INSTALLDIRS=vendor
4873 or equivalent. See INSTALL for details.
4875 vendorscriptexp (vendorscript.U):
4876 This variable is the ~name expanded version of vendorscript, so that you
4877 may use it directly in Makefiles or shell scripts.
4879 version (patchlevel.U):
4880 The full version number of this package, such as 5.6.1 (or 5_6_1).
4881 This combines revision, patchlevel, and subversion to get the
4882 full version number, including any possible subversions.
4883 This is suitable for use as a directory name, and hence is
4884 filesystem dependent.
4886 version_patchlevel_string (patchlevel.U):
4887 This is a string combining version, subversion and
4888 perl_patchlevel (if perl_patchlevel is non-zero).
4889 It is typically something like
4890 'version 7 subversion 1' or
4891 'version 7 subversion 1 patchlevel 11224'
4892 It is computed here to avoid duplication of code in myconfig.SH
4895 versiononly (versiononly.U):
4896 If set, this symbol indicates that only the version-specific
4897 components of a perl installation should be installed.
4898 This may be useful for making a test installation of a new
4899 version without disturbing the existing installation.
4900 Setting versiononly is equivalent to setting installperl's -v option.
4901 In particular, the non-versioned scripts and programs such as
4902 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
4903 (see INSTALL for a more complete list). Nor are the man
4905 Usually, this is undef.
4908 This variable is defined but not used by Configure.
4909 The value is a plain '' and is not useful.
4911 voidflags (voidflags.U):
4912 This variable contains the eventual value of the VOIDFLAGS symbol,
4913 which indicates how much support of the void type is given by this
4914 compiler. See VOIDFLAGS for more info.
4917 This variable holds extra path (space-separated) used to find
4918 libraries on this platform, for example CPU-specific libraries
4919 (on multi-CPU platforms) may be listed here.
4922 This variable holds the name of the compiler compiler we
4923 want to use in the Makefile. It can be yacc, byacc, or bison -y.
4926 This variable contains any additional yacc flags desired by the
4927 user. It is up to the Makefile to use this.
4930 This variable is defined but not used by Configure.
4931 The value is a plain '' and is not useful.
4934 This variable is used internally by Configure to determine the
4935 full pathname (if any) of the zip program. After Configure runs,
4936 the value is reset to a plain "zip" and is not useful.