1 This file contains a description of all the shell variables whose value is
2 determined by the Configure script. Variables intended for use in C
3 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
4 generates pod documentation for Config.pm from this file--please try to keep
5 the formatting regular.]
8 This variable defines the extension used for ordinary library files.
9 For unix, it is '.a'. The '.' is included. Other possible
10 values include '.lib'.
13 This variable defines the extension used for executable files.
14 DJGPP, Cygwin and OS/2 use '.exe'. Stratus VOS uses '.pm'.
15 On operating systems which do not require a specific extension
16 for executable files, this variable is empty.
19 This variable defines the extension used for object files.
20 For unix, it is '.o'. The '.' is included. Other possible
21 values include '.obj'.
24 This variable is set to 'true' if AFS (Andrew File System) is used
25 on the system, 'false' otherwise. It is possible to override this
26 with a hint value or command line option, but you'd better know
30 This variable is by default set to '/afs'. In the unlikely case
31 this is not the correct root, it is possible to override this with
32 a hint value or command line option. This will be used in subsequent
33 tests for AFSness in the Perl configure and test process.
35 alignbytes (alignbytes.U):
36 This variable holds the number of bytes required to align a
37 double-- or a long double when applicable. Usual values are
38 2, 4 and 8. The default is eight, for safety.
40 ansi2knr (ansi2knr.U):
41 This variable is set if the user needs to run ansi2knr.
42 Currently, this is not supported, so we just abort.
44 aphostname (d_gethname.U):
45 This variable contains the command which can be used to compute the
46 host name. The command is fully qualified by its absolute path, to make
47 it safe when used by a process with super-user privileges.
49 api_revision (patchlevel.U):
50 The three variables, api_revision, api_version, and
51 api_subversion, specify the version of the oldest perl binary
52 compatible with the present perl. In a full version string
53 such as '5.6.1', api_revision is the '5'.
54 Prior to 5.5.640, the format was a floating point number,
56 perl.c:incpush() and lib/lib.pm will automatically search in
57 $sitelib/.. for older directories back to the limit specified
58 by these api_ variables. This is only useful if you have a
59 perl library directory tree structured like the default one.
60 See INSTALL for how this works. The versioned site_perl
61 directory was introduced in 5.005, so that is the lowest
62 possible value. The version list appropriate for the current
63 system is determined in inc_version_list.U.
64 XXX To do: Since compatibility can depend on compile time
65 options (such as bincompat, longlong, etc.) it should
66 (perhaps) be set by Configure, but currently it isn't.
67 Currently, we read a hard-wired value from patchlevel.h.
68 Perhaps what we ought to do is take the hard-wired value from
69 patchlevel.h but then modify it if the current Configure
70 options warrant. patchlevel.h then would use an #ifdef guard.
72 api_subversion (patchlevel.U):
73 The three variables, api_revision, api_version, and
74 api_subversion, specify the version of the oldest perl binary
75 compatible with the present perl. In a full version string
76 such as '5.6.1', api_subversion is the '1'. See api_revision for
79 api_version (patchlevel.U):
80 The three variables, api_revision, api_version, and
81 api_subversion, specify the version of the oldest perl binary
82 compatible with the present perl. In a full version string
83 such as '5.6.1', api_version is the '6'. See api_revision for
84 full details. As a special case, 5.5.0 is rendered in the
85 old-style as 5.005. (In the 5.005_0x maintenance series,
86 this was the only versioned directory in $sitelib.)
88 api_versionstring (patchlevel.U):
89 This variable combines api_revision, api_version, and
90 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
91 for use as a directory name. This is filesystem dependent.
94 This variable is used internally by Configure to determine the
95 full pathname (if any) of the ar program. After Configure runs,
96 the value is reset to a plain "ar" and is not useful.
99 This variable holds the name of the directory in which the user wants
100 to put architecture-dependent public library files for $package.
101 It is most often a local directory such as /usr/local/lib.
102 Programs using this variable must be prepared to deal
103 with filename expansion.
105 archlibexp (archlib.U):
106 This variable is the same as the archlib variable, but is
107 filename expanded at configuration time, for convenient use.
109 archname64 (use64bits.U):
110 This variable is used for the 64-bitness part of $archname.
112 archname (archname.U):
113 This variable is a short name to characterize the current
114 architecture. It is used mainly to construct the default archlib.
117 This variable defines any additional objects that must be linked
118 in with the program on this architecture. On unix, it is usually
119 empty. It is typically used to include emulations of unix calls
120 or other facilities. For perl on OS/2, for example, this would
123 asctime_r_proto (d_asctime_r.U):
124 This variable encodes the prototype of asctime_r.
125 It is zero if d_asctime_r is undef, and one of the
126 REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
130 This variable is used internally by Configure to determine the
131 full pathname (if any) of the awk program. After Configure runs,
132 the value is reset to a plain "awk" and is not useful.
135 The base revision level of this package, from the .package file.
138 This variable is defined but not used by Configure.
139 The value is a plain '' and is not useful.
142 This variable holds the name of the directory in which the user wants
143 to put publicly executable images for the package in question. It
144 is most often a local directory such as /usr/local/bin. Programs using
145 this variable must be prepared to deal with ~name substitution.
148 This is the same as the bin variable, but is filename expanded at
149 configuration time, for use in your makefiles.
152 This variable is used internally by Configure to determine the
153 full pathname (if any) of the bison program. After Configure runs,
154 the value is reset to a plain "bison" and is not useful.
157 This variable is used internally by Configure to determine the
158 full pathname (if any) of the byacc program. After Configure runs,
159 the value is reset to a plain "byacc" and is not useful.
161 byteorder (byteorder.U):
162 This variable holds the byte order in a UV. In the following,
163 larger digits indicate more significance. The variable byteorder
164 is either 4321 on a big-endian machine, or 1234 on a little-endian,
165 or 87654321 on a Cray ... or 3412 with weird order !
168 This variable contains the \c string if that is what causes the echo
169 command to suppress newline. Otherwise it is null. Correct usage is
170 $echo $n "prompt for a question: $c".
172 castflags (d_castneg.U):
173 This variable contains a flag that precise difficulties the
174 compiler has casting odd floating values to unsigned long:
176 1 = couldn't cast < 0
177 2 = couldn't cast >= 0x80000000
178 4 = couldn't cast in argument expression list
181 This variable is used internally by Configure to determine the
182 full pathname (if any) of the cat program. After Configure runs,
183 the value is reset to a plain "cat" and is not useful.
186 This variable holds the name of a command to execute a C compiler which
187 can resolve multiple global references that happen to have the same
188 name. Usual values are 'cc' and 'gcc'.
189 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
191 cccdlflags (dlsrc.U):
192 This variable contains any special flags that might need to be
193 passed with 'cc -c' to compile modules to be used to create a shared
194 library that will be used for dynamic loading. For hpux, this
195 should be +z. It is up to the makefile to use it.
198 This variable contains any special flags that might need to be
199 passed to cc to link with a shared library for dynamic loading.
200 It is up to the makefile to use it. For sunos 4.1, it should
204 This variable contains any additional C compiler flags desired by
205 the user. It is up to the Makefile to use this.
207 ccflags_uselargefiles (uselfs.U):
208 This variable contains the compiler flags needed by large file builds
209 and added to ccflags by hints files.
212 This can set either by hints files or by Configure. If using
213 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
214 Some platforms, however, make good use of this by storing the
215 flavor of the C compiler being used here. For example if using
216 the Sun WorkShop suite, ccname will be 'workshop'.
218 ccsymbols (Cppsym.U):
219 The variable contains the symbols defined by the C compiler alone.
220 The symbols defined by cpp or by cc when it calls cpp are not in
221 this list, see cppsymbols and cppccsymbols.
222 The list is a space-separated list of symbol=value tokens.
224 ccversion (Checkcc.U):
225 This can set either by hints files or by Configure. If using
226 a (non-gcc) vendor cc, this variable may contain a version for
230 Login name of the person who ran the Configure script and answered the
231 questions. This is used to tag both config.sh and config_h.SH.
233 cf_email (cf_email.U):
234 Electronic mail address of the person who ran Configure. This can be
235 used by units that require the user's e-mail, like MailList.U.
238 Holds the output of the "date" command when the configuration file was
239 produced. This is used to tag both config.sh and config_h.SH.
241 charsize (charsize.U):
242 This variable contains the value of the CHARSIZE symbol, which
243 indicates to the C program how many bytes there are in a character.
246 This variable is defined but not used by Configure.
247 The value is a plain '' and is not useful.
250 This variable is used internally by Configure to determine the
251 full pathname (if any) of the chmod program. After Configure runs,
252 the value is reset to a plain "chmod" and is not useful.
255 This variable is defined but not used by Configure.
256 The value is a plain '' and is not useful.
258 clocktype (d_times.U):
259 This variable holds the type returned by times(). It can be long,
260 or clock_t on BSD sites (in which case <sys/types.h> should be
264 This variable is used internally by Configure to determine the
265 full pathname (if any) of the comm program. After Configure runs,
266 the value is reset to a plain "comm" and is not useful.
269 This variable is defined but not used by Configure.
270 The value is a plain '' and is not useful.
272 contains (contains.U):
273 This variable holds the command to do a grep with a proper return
274 status. On most sane systems it is simply "grep". On insane systems
275 it is a grep followed by a cat followed by a test. This variable
276 is primarily for the use of other Configure units.
279 This variable is used internally by Configure to determine the
280 full pathname (if any) of the cp program. After Configure runs,
281 the value is reset to a plain "cp" and is not useful.
284 This variable is defined but not used by Configure.
285 The value is a plain '' and is not useful.
288 This variable is used internally by Configure to determine the
289 full pathname (if any) of the cpp program. After Configure runs,
290 the value is reset to a plain "cpp" and is not useful.
292 cpp_stuff (cpp_stuff.U):
293 This variable contains an identification of the catenation mechanism
294 used by the C preprocessor.
296 cppccsymbols (Cppsym.U):
297 The variable contains the symbols defined by the C compiler
298 when it calls cpp. The symbols defined by the cc alone or cpp
299 alone are not in this list, see ccsymbols and cppsymbols.
300 The list is a space-separated list of symbol=value tokens.
302 cppflags (ccflags.U):
303 This variable holds the flags that will be passed to the C pre-
304 processor. It is up to the Makefile to use it.
306 cpplast (cppstdin.U):
307 This variable has the same functionality as cppminus, only it applies
308 to cpprun and not cppstdin.
310 cppminus (cppstdin.U):
311 This variable contains the second part of the string which will invoke
312 the C preprocessor on the standard input and produce to standard
313 output. This variable will have the value "-" if cppstdin needs
314 a minus to specify standard input, otherwise the value is "".
317 This variable contains the command which will invoke a C preprocessor
318 on standard input and put the output to stdout. It is guaranteed not
319 to be a wrapper and may be a null string if no preprocessor can be
320 made directly available. This preprocessor might be different from the
321 one used by the C compiler. Don't forget to append cpplast after the
322 preprocessor options.
324 cppstdin (cppstdin.U):
325 This variable contains the command which will invoke the C
326 preprocessor on standard input and put the output to stdout.
327 It is primarily used by other Configure units that ask about
328 preprocessor symbols.
330 cppsymbols (Cppsym.U):
331 The variable contains the symbols defined by the C preprocessor
332 alone. The symbols defined by cc or by cc when it calls cpp are
333 not in this list, see ccsymbols and cppccsymbols.
334 The list is a space-separated list of symbol=value tokens.
336 crypt_r_proto (d_crypt_r.U):
337 This variable encodes the prototype of crypt_r.
338 It is zero if d_crypt_r is undef, and one of the
339 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
342 cryptlib (d_crypt.U):
343 This variable holds -lcrypt or the path to a libcrypt.a archive if
344 the crypt() function is not defined in the standard C library. It is
345 up to the Makefile to use this.
348 This variable is used internally by Configure to determine the
349 full pathname (if any) of the csh program. After Configure runs,
350 the value is reset to a plain "csh" and is not useful.
352 ctermid_r_proto (d_ctermid_r.U):
353 This variable encodes the prototype of ctermid_r.
354 It is zero if d_ctermid_r is undef, and one of the
355 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
358 ctime_r_proto (d_ctime_r.U):
359 This variable encodes the prototype of ctime_r.
360 It is zero if d_ctime_r is undef, and one of the
361 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
364 d__fwalk (d__fwalk.U):
365 This variable conditionally defines HAS__FWALK if _fwalk() is
366 available to apply a function to all the file handles.
368 d_access (d_access.U):
369 This variable conditionally defines HAS_ACCESS if the access() system
370 call is available to check for access permissions using real IDs.
372 d_accessx (d_accessx.U):
373 This variable conditionally defines the HAS_ACCESSX symbol, which
374 indicates to the C program that the accessx() routine is available.
377 This variable conditionally defines the HAS_ALARM symbol, which
378 indicates to the C program that the alarm() routine is available.
380 d_archlib (archlib.U):
381 This variable conditionally defines ARCHLIB to hold the pathname
382 of architecture-dependent library files for $package. If
383 $archlib is the same as $privlib, then this is set to undef.
385 d_asctime_r (d_asctime_r.U):
386 This variable conditionally defines the HAS_ASCTIME_R symbol,
387 which indicates to the C program that the asctime_r()
388 routine is available.
391 This variable conditionally defines the HAS_ATOLF symbol, which
392 indicates to the C program that the atolf() routine is available.
395 This variable conditionally defines the HAS_ATOLL symbol, which
396 indicates to the C program that the atoll() routine is available.
398 d_attribut (d_attribut.U):
399 This variable conditionally defines HASATTRIBUTE, which
400 indicates the C compiler can check for function attributes,
401 such as printf formats.
404 This variable conditionally defines the HAS_BCMP symbol if
405 the bcmp() routine is available to compare strings.
408 This variable conditionally defines the HAS_BCOPY symbol if
409 the bcopy() routine is available to copy strings.
412 This symbol conditionally defines the symbol BSD when running on a
415 d_bsdgetpgrp (d_getpgrp.U):
416 This variable conditionally defines USE_BSD_GETPGRP if
417 getpgrp needs one arguments whereas USG one needs none.
419 d_bsdsetpgrp (d_setpgrp.U):
420 This variable conditionally defines USE_BSD_SETPGRP if
421 setpgrp needs two arguments whereas USG one needs none.
422 See also d_setpgid for a POSIX interface.
425 This variable conditionally defines the HAS_BZERO symbol if
426 the bzero() routine is available to set memory to 0.
428 d_casti32 (d_casti32.U):
429 This variable conditionally defines CASTI32, which indicates
430 whether the C compiler can cast large floats to 32-bit ints.
432 d_castneg (d_castneg.U):
433 This variable conditionally defines CASTNEG, which indicates
434 wether the C compiler can cast negative float to unsigned.
436 d_charvspr (d_vprintf.U):
437 This variable conditionally defines CHARVSPRINTF if this system
438 has vsprintf returning type (char*). The trend seems to be to
439 declare it as "int vsprintf()".
442 This variable conditionally defines the HAS_CHOWN symbol, which
443 indicates to the C program that the chown() routine is available.
445 d_chroot (d_chroot.U):
446 This variable conditionally defines the HAS_CHROOT symbol, which
447 indicates to the C program that the chroot() routine is available.
449 d_chsize (d_chsize.U):
450 This variable conditionally defines the CHSIZE symbol, which
451 indicates to the C program that the chsize() routine is available
452 to truncate files. You might need a -lx to get this routine.
455 This variable conditionally defines the HAS_CLASS symbol, which
456 indicates to the C program that the class() routine is available.
458 d_closedir (d_closedir.U):
459 This variable conditionally defines HAS_CLOSEDIR if closedir() is
462 d_cmsghdr_s (d_cmsghdr_s.U):
463 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
464 which indicates that the struct cmsghdr is supported.
467 This variable conditionally defines the HASCONST symbol, which
468 indicates to the C program that this C compiler knows about the
472 This variable conditionally defines the CRYPT symbol, which
473 indicates to the C program that the crypt() routine is available
474 to encrypt passwords and the like.
476 d_crypt_r (d_crypt_r.U):
477 This variable conditionally defines the HAS_CRYPT_R symbol,
478 which indicates to the C program that the crypt_r()
479 routine is available.
482 This variable conditionally defines the CSH symbol, which
483 indicates to the C program that the C-shell exists.
485 d_ctermid_r (d_ctermid_r.U):
486 This variable conditionally defines the HAS_CTERMID_R symbol,
487 which indicates to the C program that the ctermid_r()
488 routine is available.
490 d_ctime_r (d_ctime_r.U):
491 This variable conditionally defines the HAS_CTIME_R symbol,
492 which indicates to the C program that the ctime_r()
493 routine is available.
495 d_cuserid (d_cuserid.U):
496 This variable conditionally defines the HAS_CUSERID symbol, which
497 indicates to the C program that the cuserid() routine is available
498 to get character login names.
500 d_dbl_dig (d_dbl_dig.U):
501 This variable conditionally defines d_dbl_dig if this system's
502 header files provide DBL_DIG, which is the number of significant
503 digits in a double precision number.
505 d_dbminitproto (d_dbminitproto.U):
506 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
507 which indicates to the C program that the system provides
508 a prototype for the dbminit() function. Otherwise, it is
509 up to the program to supply one.
511 d_difftime (d_difftime.U):
512 This variable conditionally defines the HAS_DIFFTIME symbol, which
513 indicates to the C program that the difftime() routine is available.
516 This variable conditionally defines the HAS_DIRFD constant,
517 which indicates to the C program that dirfd() is available
518 to return the file descriptor of a directory stream.
520 d_dirnamlen (i_dirent.U):
521 This variable conditionally defines DIRNAMLEN, which indicates
522 to the C program that the length of directory entry names is
523 provided by a d_namelen field.
525 d_dlerror (d_dlerror.U):
526 This variable conditionally defines the HAS_DLERROR symbol, which
527 indicates to the C program that the dlerror() routine is available.
529 d_dlopen (d_dlopen.U):
530 This variable conditionally defines the HAS_DLOPEN symbol, which
531 indicates to the C program that the dlopen() routine is available.
533 d_dlsymun (d_dlsymun.U):
534 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
535 indicates that we need to prepend an underscore to the symbol
536 name before calling dlsym().
538 d_dosuid (d_dosuid.U):
539 This variable conditionally defines the symbol DOSUID, which
540 tells the C program that it should insert setuid emulation code
541 on hosts which have setuid #! scripts disabled.
543 d_drand48_r (d_drand48_r.U):
544 This variable conditionally defines the HAS_DRAND48_R symbol,
545 which indicates to the C program that the drand48_r()
546 routine is available.
548 d_drand48proto (d_drand48proto.U):
549 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
550 which indicates to the C program that the system provides
551 a prototype for the drand48() function. Otherwise, it is
552 up to the program to supply one.
555 This variable conditionally defines HAS_DUP2 if dup2() is
556 available to duplicate file descriptors.
558 d_eaccess (d_eaccess.U):
559 This variable conditionally defines the HAS_EACCESS symbol, which
560 indicates to the C program that the eaccess() routine is available.
562 d_endgrent (d_endgrent.U):
563 This variable conditionally defines the HAS_ENDGRENT symbol, which
564 indicates to the C program that the endgrent() routine is available
565 for sequential access of the group database.
567 d_endgrent_r (d_endgrent_r.U):
568 This variable conditionally defines the HAS_ENDGRENT_R symbol,
569 which indicates to the C program that the endgrent_r()
570 routine is available.
572 d_endhent (d_endhent.U):
573 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
574 available to close whatever was being used for host queries.
576 d_endhostent_r (d_endhostent_r.U):
577 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
578 which indicates to the C program that the endhostent_r()
579 routine is available.
581 d_endnent (d_endnent.U):
582 This variable conditionally defines HAS_ENDNETENT if endnetent() is
583 available to close whatever was being used for network queries.
585 d_endnetent_r (d_endnetent_r.U):
586 This variable conditionally defines the HAS_ENDNETENT_R symbol,
587 which indicates to the C program that the endnetent_r()
588 routine is available.
590 d_endpent (d_endpent.U):
591 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
592 available to close whatever was being used for protocol queries.
594 d_endprotoent_r (d_endprotoent_r.U):
595 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
596 which indicates to the C program that the endprotoent_r()
597 routine is available.
599 d_endpwent (d_endpwent.U):
600 This variable conditionally defines the HAS_ENDPWENT symbol, which
601 indicates to the C program that the endpwent() routine is available
602 for sequential access of the passwd database.
604 d_endpwent_r (d_endpwent_r.U):
605 This variable conditionally defines the HAS_ENDPWENT_R symbol,
606 which indicates to the C program that the endpwent_r()
607 routine is available.
609 d_endsent (d_endsent.U):
610 This variable conditionally defines HAS_ENDSERVENT if endservent() is
611 available to close whatever was being used for service queries.
613 d_endservent_r (d_endservent_r.U):
614 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
615 which indicates to the C program that the endservent_r()
616 routine is available.
618 d_eofnblk (nblock_io.U):
619 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
620 when reading from a non-blocking I/O source.
623 This variable conditionally defines the symbols EUNICE and VAX, which
624 alerts the C program that it must deal with ideosyncracies of VMS.
626 d_fchdir (d_fchdir.U):
627 This variable conditionally defines the HAS_FCHDIR symbol, which
628 indicates to the C program that the fchdir() routine is available.
630 d_fchmod (d_fchmod.U):
631 This variable conditionally defines the HAS_FCHMOD symbol, which
632 indicates to the C program that the fchmod() routine is available
633 to change mode of opened files.
635 d_fchown (d_fchown.U):
636 This variable conditionally defines the HAS_FCHOWN symbol, which
637 indicates to the C program that the fchown() routine is available
638 to change ownership of opened files.
641 This variable conditionally defines the HAS_FCNTL symbol, and indicates
642 whether the fcntl() function exists
644 d_fcntl_can_lock (d_fcntl_can_lock.U):
645 This variable conditionally defines the FCNTL_CAN_LOCK symbol
646 and indicates whether file locking with fcntl() works.
648 d_fd_macros (d_fd_set.U):
649 This variable contains the eventual value of the HAS_FD_MACROS symbol,
650 which indicates if your C compiler knows about the macros which
651 manipulate an fd_set.
653 d_fd_set (d_fd_set.U):
654 This variable contains the eventual value of the HAS_FD_SET symbol,
655 which indicates if your C compiler knows about the fd_set typedef.
657 d_fds_bits (d_fd_set.U):
658 This variable contains the eventual value of the HAS_FDS_BITS symbol,
659 which indicates if your fd_set typedef contains the fds_bits member.
660 If you have an fd_set typedef, but the dweebs who installed it did
661 a half-fast job and neglected to provide the macros to manipulate
662 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
664 d_fgetpos (d_fgetpos.U):
665 This variable conditionally defines HAS_FGETPOS if fgetpos() is
666 available to get the file position indicator.
668 d_finite (d_finite.U):
669 This variable conditionally defines the HAS_FINITE symbol, which
670 indicates to the C program that the finite() routine is available.
672 d_finitel (d_finitel.U):
673 This variable conditionally defines the HAS_FINITEL symbol, which
674 indicates to the C program that the finitel() routine is available.
676 d_flexfnam (d_flexfnam.U):
677 This variable conditionally defines the FLEXFILENAMES symbol, which
678 indicates that the system supports filenames longer than 14 characters.
681 This variable conditionally defines HAS_FLOCK if flock() is
682 available to do file locking.
684 d_flockproto (d_flockproto.U):
685 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
686 which indicates to the C program that the system provides
687 a prototype for the flock() function. Otherwise, it is
688 up to the program to supply one.
691 This variable conditionally defines the HAS_FORK symbol, which
692 indicates to the C program that the fork() routine is available.
694 d_fp_class (d_fp_class.U):
695 This variable conditionally defines the HAS_FP_CLASS symbol, which
696 indicates to the C program that the fp_class() routine is available.
698 d_fpathconf (d_pathconf.U):
699 This variable conditionally defines the HAS_FPATHCONF symbol, which
700 indicates to the C program that the pathconf() routine is available
701 to determine file-system related limits and options associated
702 with a given open file descriptor.
704 d_fpclass (d_fpclass.U):
705 This variable conditionally defines the HAS_FPCLASS symbol, which
706 indicates to the C program that the fpclass() routine is available.
708 d_fpclassify (d_fpclassify.U):
709 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
710 indicates to the C program that the fpclassify() routine is available.
712 d_fpclassl (d_fpclassl.U):
713 This variable conditionally defines the HAS_FPCLASSL symbol, which
714 indicates to the C program that the fpclassl() routine is available.
716 d_fpos64_t (d_fpos64_t.U):
717 This symbol will be defined if the C compiler supports fpos64_t.
719 d_frexpl (d_frexpl.U):
720 This variable conditionally defines the HAS_FREXPL symbol, which
721 indicates to the C program that the frexpl() routine is available.
723 d_fs_data_s (d_fs_data_s.U):
724 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
725 which indicates that the struct fs_data is supported.
727 d_fseeko (d_fseeko.U):
728 This variable conditionally defines the HAS_FSEEKO symbol, which
729 indicates to the C program that the fseeko() routine is available.
731 d_fsetpos (d_fsetpos.U):
732 This variable conditionally defines HAS_FSETPOS if fsetpos() is
733 available to set the file position indicator.
735 d_fstatfs (d_fstatfs.U):
736 This variable conditionally defines the HAS_FSTATFS symbol, which
737 indicates to the C program that the fstatfs() routine is available.
739 d_fstatvfs (d_statvfs.U):
740 This variable conditionally defines the HAS_FSTATVFS symbol, which
741 indicates to the C program that the fstatvfs() routine is available.
744 This variable conditionally defines the HAS_FSYNC symbol, which
745 indicates to the C program that the fsync() routine is available.
747 d_ftello (d_ftello.U):
748 This variable conditionally defines the HAS_FTELLO symbol, which
749 indicates to the C program that the ftello() routine is available.
752 This variable conditionally defines the HAS_FTIME symbol, which indicates
753 that the ftime() routine exists. The ftime() routine is basically
754 a sub-second accuracy clock.
756 d_Gconvert (d_gconvert.U):
757 This variable holds what Gconvert is defined as to convert
758 floating point numbers into strings. By default, Configure
759 sets this macro to use the first of gconvert, gcvt, or sprintf
760 that pass sprintf-%g-like behaviour tests. If perl is using
761 long doubles, the macro uses the first of the following
762 functions that pass Configure's tests: qgcvt, sprintf (if
763 Configure knows how to make sprintf format long doubles--see
764 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
765 The gconvert_preference and gconvert_ld_preference variables
766 can be used to alter Configure's preferences, for doubles and
767 long doubles, respectively. If present, they contain a
768 space-separated list of one or more of the above function
769 names in the order they should be tried.
770 d_Gconvert may be set to override Configure with a platform-
771 specific function. If this function expects a double, a
772 different value may need to be set by the uselongdouble.cbu
773 call-back unit so that long doubles can be formatted without
776 d_getcwd (d_getcwd.U):
777 This variable conditionally defines the HAS_GETCWD symbol, which
778 indicates to the C program that the getcwd() routine is available
779 to get the current working directory.
781 d_getespwnam (d_getespwnam.U):
782 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
783 available to retrieve enchanced (shadow) password entries by name.
785 d_getfsstat (d_getfsstat.U):
786 This variable conditionally defines the HAS_GETFSSTAT symbol, which
787 indicates to the C program that the getfsstat() routine is available.
789 d_getgrent (d_getgrent.U):
790 This variable conditionally defines the HAS_GETGRENT symbol, which
791 indicates to the C program that the getgrent() routine is available
792 for sequential access of the group database.
794 d_getgrent_r (d_getgrent_r.U):
795 This variable conditionally defines the HAS_GETGRENT_R symbol,
796 which indicates to the C program that the getgrent_r()
797 routine is available.
799 d_getgrgid_r (d_getgrgid_r.U):
800 This variable conditionally defines the HAS_GETGRGID_R symbol,
801 which indicates to the C program that the getgrgid_r()
802 routine is available.
804 d_getgrnam_r (d_getgrnam_r.U):
805 This variable conditionally defines the HAS_GETGRNAM_R symbol,
806 which indicates to the C program that the getgrnam_r()
807 routine is available.
809 d_getgrps (d_getgrps.U):
810 This variable conditionally defines the HAS_GETGROUPS symbol, which
811 indicates to the C program that the getgroups() routine is available
812 to get the list of process groups.
814 d_gethbyaddr (d_gethbyad.U):
815 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
816 indicates to the C program that the gethostbyaddr() routine is available
817 to look up hosts by their IP addresses.
819 d_gethbyname (d_gethbynm.U):
820 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
821 indicates to the C program that the gethostbyname() routine is available
822 to look up host names in some data base or other.
824 d_gethent (d_gethent.U):
825 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
826 available to look up host names in some data base or another.
828 d_gethname (d_gethname.U):
829 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
830 indicates to the C program that the gethostname() routine may be
831 used to derive the host name.
833 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
834 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
835 which indicates to the C program that the gethostbyaddr_r()
836 routine is available.
838 d_gethostbyname_r (d_gethostbyname_r.U):
839 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
840 which indicates to the C program that the gethostbyname_r()
841 routine is available.
843 d_gethostent_r (d_gethostent_r.U):
844 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
845 which indicates to the C program that the gethostent_r()
846 routine is available.
848 d_gethostprotos (d_gethostprotos.U):
849 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
850 which indicates to the C program that <netdb.h> supplies
851 prototypes for the various gethost*() functions.
852 See also netdbtype.U for probing for various netdb types.
854 d_getitimer (d_getitimer.U):
855 This variable conditionally defines the HAS_GETITIMER symbol, which
856 indicates to the C program that the getitimer() routine is available.
858 d_getlogin (d_getlogin.U):
859 This variable conditionally defines the HAS_GETLOGIN symbol, which
860 indicates to the C program that the getlogin() routine is available
861 to get the login name.
863 d_getlogin_r (d_getlogin_r.U):
864 This variable conditionally defines the HAS_GETLOGIN_R symbol,
865 which indicates to the C program that the getlogin_r()
866 routine is available.
868 d_getmnt (d_getmnt.U):
869 This variable conditionally defines the HAS_GETMNT symbol, which
870 indicates to the C program that the getmnt() routine is available
871 to retrieve one or more mount info blocks by filename.
873 d_getmntent (d_getmntent.U):
874 This variable conditionally defines the HAS_GETMNTENT symbol, which
875 indicates to the C program that the getmntent() routine is available
876 to iterate through mounted files to get their mount info.
878 d_getnbyaddr (d_getnbyad.U):
879 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
880 indicates to the C program that the getnetbyaddr() routine is available
881 to look up networks by their IP addresses.
883 d_getnbyname (d_getnbynm.U):
884 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
885 indicates to the C program that the getnetbyname() routine is available
886 to look up networks by their names.
888 d_getnent (d_getnent.U):
889 This variable conditionally defines HAS_GETNETENT if getnetent() is
890 available to look up network names in some data base or another.
892 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
893 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
894 which indicates to the C program that the getnetbyaddr_r()
895 routine is available.
897 d_getnetbyname_r (d_getnetbyname_r.U):
898 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
899 which indicates to the C program that the getnetbyname_r()
900 routine is available.
902 d_getnetent_r (d_getnetent_r.U):
903 This variable conditionally defines the HAS_GETNETENT_R symbol,
904 which indicates to the C program that the getnetent_r()
905 routine is available.
907 d_getnetprotos (d_getnetprotos.U):
908 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
909 which indicates to the C program that <netdb.h> supplies
910 prototypes for the various getnet*() functions.
911 See also netdbtype.U for probing for various netdb types.
913 d_getpagsz (d_getpagsz.U):
914 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
915 is available to get the system page size.
917 d_getpbyname (d_getprotby.U):
918 This variable conditionally defines the HAS_GETPROTOBYNAME
919 symbol, which indicates to the C program that the
920 getprotobyname() routine is available to look up protocols
923 d_getpbynumber (d_getprotby.U):
924 This variable conditionally defines the HAS_GETPROTOBYNUMBER
925 symbol, which indicates to the C program that the
926 getprotobynumber() routine is available to look up protocols
929 d_getpent (d_getpent.U):
930 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
931 available to look up protocols in some data base or another.
933 d_getpgid (d_getpgid.U):
934 This variable conditionally defines the HAS_GETPGID symbol, which
935 indicates to the C program that the getpgid(pid) function
936 is available to get the process group id.
938 d_getpgrp2 (d_getpgrp2.U):
939 This variable conditionally defines the HAS_GETPGRP2 symbol, which
940 indicates to the C program that the getpgrp2() (as in DG/UX) routine
941 is available to get the current process group.
943 d_getpgrp (d_getpgrp.U):
944 This variable conditionally defines HAS_GETPGRP if getpgrp() is
945 available to get the current process group.
947 d_getppid (d_getppid.U):
948 This variable conditionally defines the HAS_GETPPID symbol, which
949 indicates to the C program that the getppid() routine is available
950 to get the parent process ID.
952 d_getprior (d_getprior.U):
953 This variable conditionally defines HAS_GETPRIORITY if getpriority()
954 is available to get a process's priority.
956 d_getprotobyname_r (d_getprotobyname_r.U):
957 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
958 which indicates to the C program that the getprotobyname_r()
959 routine is available.
961 d_getprotobynumber_r (d_getprotobynumber_r.U):
962 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
963 which indicates to the C program that the getprotobynumber_r()
964 routine is available.
966 d_getprotoent_r (d_getprotoent_r.U):
967 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
968 which indicates to the C program that the getprotoent_r()
969 routine is available.
971 d_getprotoprotos (d_getprotoprotos.U):
972 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
973 which indicates to the C program that <netdb.h> supplies
974 prototypes for the various getproto*() functions.
975 See also netdbtype.U for probing for various netdb types.
977 d_getprpwnam (d_getprpwnam.U):
978 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
979 available to retrieve protected (shadow) password entries by name.
981 d_getpwent (d_getpwent.U):
982 This variable conditionally defines the HAS_GETPWENT symbol, which
983 indicates to the C program that the getpwent() routine is available
984 for sequential access of the passwd database.
986 d_getpwent_r (d_getpwent_r.U):
987 This variable conditionally defines the HAS_GETPWENT_R symbol,
988 which indicates to the C program that the getpwent_r()
989 routine is available.
991 d_getpwnam_r (d_getpwnam_r.U):
992 This variable conditionally defines the HAS_GETPWNAM_R symbol,
993 which indicates to the C program that the getpwnam_r()
994 routine is available.
996 d_getpwuid_r (d_getpwuid_r.U):
997 This variable conditionally defines the HAS_GETPWUID_R symbol,
998 which indicates to the C program that the getpwuid_r()
999 routine is available.
1001 d_getsbyname (d_getsrvby.U):
1002 This variable conditionally defines the HAS_GETSERVBYNAME
1003 symbol, which indicates to the C program that the
1004 getservbyname() routine is available to look up services
1007 d_getsbyport (d_getsrvby.U):
1008 This variable conditionally defines the HAS_GETSERVBYPORT
1009 symbol, which indicates to the C program that the
1010 getservbyport() routine is available to look up services
1013 d_getsent (d_getsent.U):
1014 This variable conditionally defines HAS_GETSERVENT if getservent() is
1015 available to look up network services in some data base or another.
1017 d_getservbyname_r (d_getservbyname_r.U):
1018 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1019 which indicates to the C program that the getservbyname_r()
1020 routine is available.
1022 d_getservbyport_r (d_getservbyport_r.U):
1023 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1024 which indicates to the C program that the getservbyport_r()
1025 routine is available.
1027 d_getservent_r (d_getservent_r.U):
1028 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1029 which indicates to the C program that the getservent_r()
1030 routine is available.
1032 d_getservprotos (d_getservprotos.U):
1033 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1034 which indicates to the C program that <netdb.h> supplies
1035 prototypes for the various getserv*() functions.
1036 See also netdbtype.U for probing for various netdb types.
1038 d_getspnam (d_getspnam.U):
1039 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1040 available to retrieve SysV shadow password entries by name.
1042 d_getspnam_r (d_getspnam_r.U):
1043 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1044 which indicates to the C program that the getspnam_r()
1045 routine is available.
1047 d_gettimeod (d_ftime.U):
1048 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1049 indicates that the gettimeofday() system call exists (to obtain a
1050 sub-second accuracy clock). You should probably include <sys/resource.h>.
1052 d_gmtime_r (d_gmtime_r.U):
1053 This variable conditionally defines the HAS_GMTIME_R symbol,
1054 which indicates to the C program that the gmtime_r()
1055 routine is available.
1057 d_gnulibc (d_gnulibc.U):
1058 Defined if we're dealing with the GNU C Library.
1060 d_grpasswd (i_grp.U):
1061 This variable conditionally defines GRPASSWD, which indicates
1062 that struct group in <grp.h> contains gr_passwd.
1064 d_hasmntopt (d_hasmntopt.U):
1065 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1066 indicates to the C program that the hasmntopt() routine is available
1067 to query the mount options of file systems.
1069 d_htonl (d_htonl.U):
1070 This variable conditionally defines HAS_HTONL if htonl() and its
1071 friends are available to do network order byte swapping.
1073 d_index (d_strchr.U):
1074 This variable conditionally defines HAS_INDEX if index() and
1075 rindex() are available for string searching.
1077 d_inetaton (d_inetaton.U):
1078 This variable conditionally defines the HAS_INET_ATON symbol, which
1079 indicates to the C program that the inet_aton() function is available
1080 to parse IP address "dotted-quad" strings.
1082 d_int64_t (d_int64_t.U):
1083 This symbol will be defined if the C compiler supports int64_t.
1085 d_isascii (d_isascii.U):
1086 This variable conditionally defines the HAS_ISASCII constant,
1087 which indicates to the C program that isascii() is available.
1089 d_isfinite (d_isfinite.U):
1090 This variable conditionally defines the HAS_ISFINITE symbol, which
1091 indicates to the C program that the isfinite() routine is available.
1093 d_isinf (d_isinf.U):
1094 This variable conditionally defines the HAS_ISINF symbol, which
1095 indicates to the C program that the isinf() routine is available.
1097 d_isnan (d_isnan.U):
1098 This variable conditionally defines the HAS_ISNAN symbol, which
1099 indicates to the C program that the isnan() routine is available.
1101 d_isnanl (d_isnanl.U):
1102 This variable conditionally defines the HAS_ISNANL symbol, which
1103 indicates to the C program that the isnanl() routine is available.
1105 d_killpg (d_killpg.U):
1106 This variable conditionally defines the HAS_KILLPG symbol, which
1107 indicates to the C program that the killpg() routine is available
1108 to kill process groups.
1110 d_lchown (d_lchown.U):
1111 This variable conditionally defines the HAS_LCHOWN symbol, which
1112 indicates to the C program that the lchown() routine is available
1113 to operate on a symbolic link (instead of following the link).
1115 d_ldbl_dig (d_ldbl_dig.U):
1116 This variable conditionally defines d_ldbl_dig if this system's
1117 header files provide LDBL_DIG, which is the number of significant
1118 digits in a long double precision number.
1121 This variable conditionally defines HAS_LINK if link() is
1122 available to create hard links.
1124 d_localtime_r (d_localtime_r.U):
1125 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1126 which indicates to the C program that the localtime_r()
1127 routine is available.
1129 d_locconv (d_locconv.U):
1130 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1131 available for numeric and monetary formatting conventions.
1133 d_lockf (d_lockf.U):
1134 This variable conditionally defines HAS_LOCKF if lockf() is
1135 available to do file locking.
1137 d_longdbl (d_longdbl.U):
1138 This variable conditionally defines HAS_LONG_DOUBLE if
1139 the long double type is supported.
1141 d_longlong (d_longlong.U):
1142 This variable conditionally defines HAS_LONG_LONG if
1143 the long long type is supported.
1145 d_lseekproto (d_lseekproto.U):
1146 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1147 which indicates to the C program that the system provides
1148 a prototype for the lseek() function. Otherwise, it is
1149 up to the program to supply one.
1151 d_lstat (d_lstat.U):
1152 This variable conditionally defines HAS_LSTAT if lstat() is
1153 available to do file stats on symbolic links.
1155 d_madvise (d_madvise.U):
1156 This variable conditionally defines HAS_MADVISE if madvise() is
1157 available to map a file into memory.
1159 d_mblen (d_mblen.U):
1160 This variable conditionally defines the HAS_MBLEN symbol, which
1161 indicates to the C program that the mblen() routine is available
1162 to find the number of bytes in a multibye character.
1164 d_mbstowcs (d_mbstowcs.U):
1165 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1166 indicates to the C program that the mbstowcs() routine is available
1167 to convert a multibyte string into a wide character string.
1169 d_mbtowc (d_mbtowc.U):
1170 This variable conditionally defines the HAS_MBTOWC symbol, which
1171 indicates to the C program that the mbtowc() routine is available
1172 to convert multibyte to a wide character.
1174 d_memchr (d_memchr.U):
1175 This variable conditionally defines the HAS_MEMCHR symbol, which
1176 indicates to the C program that the memchr() routine is available
1177 to locate characters within a C string.
1179 d_memcmp (d_memcmp.U):
1180 This variable conditionally defines the HAS_MEMCMP symbol, which
1181 indicates to the C program that the memcmp() routine is available
1182 to compare blocks of memory.
1184 d_memcpy (d_memcpy.U):
1185 This variable conditionally defines the HAS_MEMCPY symbol, which
1186 indicates to the C program that the memcpy() routine is available
1187 to copy blocks of memory.
1189 d_memmove (d_memmove.U):
1190 This variable conditionally defines the HAS_MEMMOVE symbol, which
1191 indicates to the C program that the memmove() routine is available
1192 to copy potentatially overlapping blocks of memory.
1194 d_memset (d_memset.U):
1195 This variable conditionally defines the HAS_MEMSET symbol, which
1196 indicates to the C program that the memset() routine is available
1197 to set blocks of memory.
1199 d_mkdir (d_mkdir.U):
1200 This variable conditionally defines the HAS_MKDIR symbol, which
1201 indicates to the C program that the mkdir() routine is available
1202 to create directories..
1204 d_mkdtemp (d_mkdtemp.U):
1205 This variable conditionally defines the HAS_MKDTEMP symbol, which
1206 indicates to the C program that the mkdtemp() routine is available
1207 to exclusively create a uniquely named temporary directory.
1209 d_mkfifo (d_mkfifo.U):
1210 This variable conditionally defines the HAS_MKFIFO symbol, which
1211 indicates to the C program that the mkfifo() routine is available.
1213 d_mkstemp (d_mkstemp.U):
1214 This variable conditionally defines the HAS_MKSTEMP symbol, which
1215 indicates to the C program that the mkstemp() routine is available
1216 to exclusively create and open a uniquely named temporary file.
1218 d_mkstemps (d_mkstemps.U):
1219 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1220 indicates to the C program that the mkstemps() routine is available
1221 to exclusively create and open a uniquely named (with a suffix)
1224 d_mktime (d_mktime.U):
1225 This variable conditionally defines the HAS_MKTIME symbol, which
1226 indicates to the C program that the mktime() routine is available.
1229 This variable conditionally defines HAS_MMAP if mmap() is
1230 available to map a file into memory.
1232 d_modfl (d_modfl.U):
1233 This variable conditionally defines the HAS_MODFL symbol, which
1234 indicates to the C program that the modfl() routine is available.
1236 d_modfl_pow32_bug (d_modfl.U):
1237 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1238 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1239 For example from 4294967303.150000 one would get 4294967302.000000
1240 and 1.150000. The bug has been seen in certain versions of glibc,
1241 release 2.2.2 is known to be okay.
1243 d_mprotect (d_mprotect.U):
1244 This variable conditionally defines HAS_MPROTECT if mprotect() is
1245 available to modify the access protection of a memory mapped file.
1248 This variable conditionally defines the HAS_MSG symbol, which
1249 indicates that the entire msg*(2) library is present.
1251 d_msg_ctrunc (d_socket.U):
1252 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1253 which indicates that the MSG_CTRUNC is available. #ifdef is
1254 not enough because it may be an enum, glibc has been known to do this.
1256 d_msg_dontroute (d_socket.U):
1257 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1258 which indicates that the MSG_DONTROUTE is available. #ifdef is
1259 not enough because it may be an enum, glibc has been known to do this.
1261 d_msg_oob (d_socket.U):
1262 This variable conditionally defines the HAS_MSG_OOB symbol,
1263 which indicates that the MSG_OOB is available. #ifdef is
1264 not enough because it may be an enum, glibc has been known to do this.
1266 d_msg_peek (d_socket.U):
1267 This variable conditionally defines the HAS_MSG_PEEK symbol,
1268 which indicates that the MSG_PEEK is available. #ifdef is
1269 not enough because it may be an enum, glibc has been known to do this.
1271 d_msg_proxy (d_socket.U):
1272 This variable conditionally defines the HAS_MSG_PROXY symbol,
1273 which indicates that the MSG_PROXY is available. #ifdef is
1274 not enough because it may be an enum, glibc has been known to do this.
1276 d_msgctl (d_msgctl.U):
1277 This variable conditionally defines the HAS_MSGCTL symbol, which
1278 indicates to the C program that the msgctl() routine is available.
1280 d_msgget (d_msgget.U):
1281 This variable conditionally defines the HAS_MSGGET symbol, which
1282 indicates to the C program that the msgget() routine is available.
1284 d_msghdr_s (d_msghdr_s.U):
1285 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1286 which indicates that the struct msghdr is supported.
1288 d_msgrcv (d_msgrcv.U):
1289 This variable conditionally defines the HAS_MSGRCV symbol, which
1290 indicates to the C program that the msgrcv() routine is available.
1292 d_msgsnd (d_msgsnd.U):
1293 This variable conditionally defines the HAS_MSGSND symbol, which
1294 indicates to the C program that the msgsnd() routine is available.
1296 d_msync (d_msync.U):
1297 This variable conditionally defines HAS_MSYNC if msync() is
1298 available to synchronize a mapped file.
1300 d_munmap (d_munmap.U):
1301 This variable conditionally defines HAS_MUNMAP if munmap() is
1302 available to unmap a region mapped by mmap().
1304 d_mymalloc (mallocsrc.U):
1305 This variable conditionally defines MYMALLOC in case other parts
1306 of the source want to take special action if MYMALLOC is used.
1307 This may include different sorts of profiling or error detection.
1310 This variable conditionally defines the HAS_NICE symbol, which
1311 indicates to the C program that the nice() routine is available.
1313 d_nl_langinfo (d_nl_langinfo.U):
1314 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1315 indicates to the C program that the nl_langinfo() routine is available.
1317 d_nv_preserves_uv (perlxv.U):
1318 This variable indicates whether a variable of type nvtype
1319 can preserve all the bits a variable of type uvtype.
1321 d_off64_t (d_off64_t.U):
1322 This symbol will be defined if the C compiler supports off64_t.
1324 d_old_pthread_create_joinable (d_pthrattrj.U):
1325 This variable conditionally defines pthread_create_joinable.
1326 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1328 d_oldpthreads (usethreads.U):
1329 This variable conditionally defines the OLD_PTHREADS_API symbol,
1330 and indicates that Perl should be built to use the old
1331 draft POSIX threads API. This is only potentially meaningful if
1334 d_oldsock (d_socket.U):
1335 This variable conditionally defines the OLDSOCKET symbol, which
1336 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1338 d_open3 (d_open3.U):
1339 This variable conditionally defines the HAS_OPEN3 manifest constant,
1340 which indicates to the C program that the 3 argument version of
1341 the open(2) function is available.
1343 d_pathconf (d_pathconf.U):
1344 This variable conditionally defines the HAS_PATHCONF symbol, which
1345 indicates to the C program that the pathconf() routine is available
1346 to determine file-system related limits and options associated
1347 with a given filename.
1349 d_pause (d_pause.U):
1350 This variable conditionally defines the HAS_PAUSE symbol, which
1351 indicates to the C program that the pause() routine is available
1352 to suspend a process until a signal is received.
1354 d_perl_otherlibdirs (otherlibdirs.U):
1355 This variable conditionally defines PERL_OTHERLIBDIRS, which
1356 contains a colon-separated set of paths for the perl binary to
1357 include in @INC. See also otherlibdirs.
1359 d_phostname (d_gethname.U):
1360 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1361 contains the shell command which, when fed to popen(), may be
1362 used to derive the host name.
1365 This variable conditionally defines the HAS_PIPE symbol, which
1366 indicates to the C program that the pipe() routine is available
1367 to create an inter-process channel.
1370 This variable conditionally defines the HAS_POLL symbol, which
1371 indicates to the C program that the poll() routine is available
1372 to poll active file descriptors.
1374 d_portable (d_portable.U):
1375 This variable conditionally defines the PORTABLE symbol, which
1376 indicates to the C program that it should not assume that it is
1377 running on the machine it was compiled on.
1379 d_PRId64 (quadfio.U):
1380 This variable conditionally defines the PERL_PRId64 symbol, which
1381 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1383 d_PRIeldbl (longdblfio.U):
1384 This variable conditionally defines the PERL_PRIfldbl symbol, which
1385 indiciates that stdio has a symbol to print long doubles.
1387 d_PRIEUldbl (longdblfio.U):
1388 This variable conditionally defines the PERL_PRIfldbl symbol, which
1389 indiciates that stdio has a symbol to print long doubles.
1390 The 'U' in the name is to separate this from d_PRIeldbl so that even
1391 case-blind systems can see the difference.
1393 d_PRIfldbl (longdblfio.U):
1394 This variable conditionally defines the PERL_PRIfldbl symbol, which
1395 indiciates that stdio has a symbol to print long doubles.
1397 d_PRIFUldbl (longdblfio.U):
1398 This variable conditionally defines the PERL_PRIfldbl symbol, which
1399 indiciates that stdio has a symbol to print long doubles.
1400 The 'U' in the name is to separate this from d_PRIfldbl so that even
1401 case-blind systems can see the difference.
1403 d_PRIgldbl (longdblfio.U):
1404 This variable conditionally defines the PERL_PRIfldbl symbol, which
1405 indiciates that stdio has a symbol to print long doubles.
1407 d_PRIGUldbl (longdblfio.U):
1408 This variable conditionally defines the PERL_PRIfldbl symbol, which
1409 indiciates that stdio has a symbol to print long doubles.
1410 The 'U' in the name is to separate this from d_PRIgldbl so that even
1411 case-blind systems can see the difference.
1413 d_PRIi64 (quadfio.U):
1414 This variable conditionally defines the PERL_PRIi64 symbol, which
1415 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1417 d_PRIo64 (quadfio.U):
1418 This variable conditionally defines the PERL_PRIo64 symbol, which
1419 indiciates that stdio has a symbol to print 64-bit octal numbers.
1421 d_PRIu64 (quadfio.U):
1422 This variable conditionally defines the PERL_PRIu64 symbol, which
1423 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1426 d_PRIx64 (quadfio.U):
1427 This variable conditionally defines the PERL_PRIx64 symbol, which
1428 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1430 d_PRIXU64 (quadfio.U):
1431 This variable conditionally defines the PERL_PRIXU64 symbol, which
1432 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1433 The 'U' in the name is to separate this from d_PRIx64 so that even
1434 case-blind systems can see the difference.
1436 d_procselfexe (d_procselfexe.U):
1437 Defined if $procselfexe is symlink to the absolute
1438 pathname of the executing program.
1440 d_pthread_atfork (d_pthread_atfork.U):
1441 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1442 which indicates to the C program that the pthread_atfork()
1443 routine is available.
1445 d_pthread_yield (d_pthread_y.U):
1446 This variable conditionally defines the HAS_PTHREAD_YIELD
1447 symbol if the pthread_yield routine is available to yield
1448 the execution of the current thread.
1451 This variable conditionally defines PWAGE, which indicates
1452 that struct passwd contains pw_age.
1454 d_pwchange (i_pwd.U):
1455 This variable conditionally defines PWCHANGE, which indicates
1456 that struct passwd contains pw_change.
1458 d_pwclass (i_pwd.U):
1459 This variable conditionally defines PWCLASS, which indicates
1460 that struct passwd contains pw_class.
1462 d_pwcomment (i_pwd.U):
1463 This variable conditionally defines PWCOMMENT, which indicates
1464 that struct passwd contains pw_comment.
1466 d_pwexpire (i_pwd.U):
1467 This variable conditionally defines PWEXPIRE, which indicates
1468 that struct passwd contains pw_expire.
1470 d_pwgecos (i_pwd.U):
1471 This variable conditionally defines PWGECOS, which indicates
1472 that struct passwd contains pw_gecos.
1474 d_pwpasswd (i_pwd.U):
1475 This variable conditionally defines PWPASSWD, which indicates
1476 that struct passwd contains pw_passwd.
1478 d_pwquota (i_pwd.U):
1479 This variable conditionally defines PWQUOTA, which indicates
1480 that struct passwd contains pw_quota.
1482 d_qgcvt (d_qgcvt.U):
1483 This variable conditionally defines the HAS_QGCVT symbol, which
1484 indicates to the C program that the qgcvt() routine is available.
1486 d_quad (quadtype.U):
1487 This variable, if defined, tells that there's a 64-bit integer type,
1490 d_random_r (d_random_r.U):
1491 This variable conditionally defines the HAS_RANDOM_R symbol,
1492 which indicates to the C program that the random_r()
1493 routine is available.
1495 d_readdir64_r (d_readdir64_r.U):
1496 This variable conditionally defines the HAS_READDIR64_R symbol,
1497 which indicates to the C program that the readdir64_r()
1498 routine is available.
1500 d_readdir (d_readdir.U):
1501 This variable conditionally defines HAS_READDIR if readdir() is
1502 available to read directory entries.
1504 d_readdir_r (d_readdir_r.U):
1505 This variable conditionally defines the HAS_READDIR_R symbol,
1506 which indicates to the C program that the readdir_r()
1507 routine is available.
1509 d_readlink (d_readlink.U):
1510 This variable conditionally defines the HAS_READLINK symbol, which
1511 indicates to the C program that the readlink() routine is available
1512 to read the value of a symbolic link.
1514 d_readv (d_readv.U):
1515 This variable conditionally defines the HAS_READV symbol, which
1516 indicates to the C program that the readv() routine is available.
1518 d_recvmsg (d_recvmsg.U):
1519 This variable conditionally defines the HAS_RECVMSG symbol, which
1520 indicates to the C program that the recvmsg() routine is available.
1522 d_rename (d_rename.U):
1523 This variable conditionally defines the HAS_RENAME symbol, which
1524 indicates to the C program that the rename() routine is available
1527 d_rewinddir (d_readdir.U):
1528 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1531 d_rmdir (d_rmdir.U):
1532 This variable conditionally defines HAS_RMDIR if rmdir() is
1533 available to remove directories.
1535 d_safebcpy (d_safebcpy.U):
1536 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1537 the bcopy() routine can do overlapping copies. Normally, you
1538 should probably use memmove().
1540 d_safemcpy (d_safemcpy.U):
1541 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1542 the memcpy() routine can do overlapping copies.
1543 For overlapping copies, memmove() should be used, if available.
1545 d_sanemcmp (d_sanemcmp.U):
1546 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1547 the memcpy() routine is available and can be used to compare relative
1548 magnitudes of chars with their high bits set.
1550 d_sbrkproto (d_sbrkproto.U):
1551 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1552 which indicates to the C program that the system provides
1553 a prototype for the sbrk() function. Otherwise, it is
1554 up to the program to supply one.
1556 d_sched_yield (d_pthread_y.U):
1557 This variable conditionally defines the HAS_SCHED_YIELD
1558 symbol if the sched_yield routine is available to yield
1559 the execution of the current thread.
1561 d_scm_rights (d_socket.U):
1562 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1563 which indicates that the SCM_RIGHTS is available. #ifdef is
1564 not enough because it may be an enum, glibc has been known to do this.
1566 d_SCNfldbl (longdblfio.U):
1567 This variable conditionally defines the PERL_PRIfldbl symbol, which
1568 indiciates that stdio has a symbol to scan long doubles.
1570 d_seekdir (d_readdir.U):
1571 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1574 d_select (d_select.U):
1575 This variable conditionally defines HAS_SELECT if select() is
1576 available to select active file descriptors. A <sys/time.h>
1577 inclusion may be necessary for the timeout field.
1580 This variable conditionally defines the HAS_SEM symbol, which
1581 indicates that the entire sem*(2) library is present.
1583 d_semctl (d_semctl.U):
1584 This variable conditionally defines the HAS_SEMCTL symbol, which
1585 indicates to the C program that the semctl() routine is available.
1587 d_semctl_semid_ds (d_union_semun.U):
1588 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1589 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1591 d_semctl_semun (d_union_semun.U):
1592 This variable conditionally defines USE_SEMCTL_SEMUN, which
1593 indicates that union semun is to be used for semctl IPC_STAT.
1595 d_semget (d_semget.U):
1596 This variable conditionally defines the HAS_SEMGET symbol, which
1597 indicates to the C program that the semget() routine is available.
1599 d_semop (d_semop.U):
1600 This variable conditionally defines the HAS_SEMOP symbol, which
1601 indicates to the C program that the semop() routine is available.
1603 d_sendmsg (d_sendmsg.U):
1604 This variable conditionally defines the HAS_SENDMSG symbol, which
1605 indicates to the C program that the sendmsg() routine is available.
1607 d_setegid (d_setegid.U):
1608 This variable conditionally defines the HAS_SETEGID symbol, which
1609 indicates to the C program that the setegid() routine is available
1610 to change the effective gid of the current program.
1612 d_seteuid (d_seteuid.U):
1613 This variable conditionally defines the HAS_SETEUID symbol, which
1614 indicates to the C program that the seteuid() routine is available
1615 to change the effective uid of the current program.
1617 d_setgrent (d_setgrent.U):
1618 This variable conditionally defines the HAS_SETGRENT symbol, which
1619 indicates to the C program that the setgrent() routine is available
1620 for initializing sequential access to the group database.
1622 d_setgrent_r (d_setgrent_r.U):
1623 This variable conditionally defines the HAS_SETGRENT_R symbol,
1624 which indicates to the C program that the setgrent_r()
1625 routine is available.
1627 d_setgrps (d_setgrps.U):
1628 This variable conditionally defines the HAS_SETGROUPS symbol, which
1629 indicates to the C program that the setgroups() routine is available
1630 to set the list of process groups.
1632 d_sethent (d_sethent.U):
1633 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1636 d_sethostent_r (d_sethostent_r.U):
1637 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1638 which indicates to the C program that the sethostent_r()
1639 routine is available.
1641 d_setitimer (d_setitimer.U):
1642 This variable conditionally defines the HAS_SETITIMER symbol, which
1643 indicates to the C program that the setitimer() routine is available.
1645 d_setlinebuf (d_setlnbuf.U):
1646 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1647 indicates to the C program that the setlinebuf() routine is available
1648 to change stderr or stdout from block-buffered or unbuffered to a
1651 d_setlocale (d_setlocale.U):
1652 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1653 available to handle locale-specific ctype implementations.
1655 d_setlocale_r (d_setlocale_r.U):
1656 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1657 which indicates to the C program that the setlocale_r()
1658 routine is available.
1660 d_setnent (d_setnent.U):
1661 This variable conditionally defines HAS_SETNETENT if setnetent() is
1664 d_setnetent_r (d_setnetent_r.U):
1665 This variable conditionally defines the HAS_SETNETENT_R symbol,
1666 which indicates to the C program that the setnetent_r()
1667 routine is available.
1669 d_setpent (d_setpent.U):
1670 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1673 d_setpgid (d_setpgid.U):
1674 This variable conditionally defines the HAS_SETPGID symbol if the
1675 setpgid(pid, gpid) function is available to set process group ID.
1677 d_setpgrp2 (d_setpgrp2.U):
1678 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1679 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1680 is available to set the current process group.
1682 d_setpgrp (d_setpgrp.U):
1683 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1684 available to set the current process group.
1686 d_setprior (d_setprior.U):
1687 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1688 is available to set a process's priority.
1690 d_setproctitle (d_setproctitle.U):
1691 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1692 which indicates to the C program that the setproctitle() routine
1695 d_setprotoent_r (d_setprotoent_r.U):
1696 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1697 which indicates to the C program that the setprotoent_r()
1698 routine is available.
1700 d_setpwent (d_setpwent.U):
1701 This variable conditionally defines the HAS_SETPWENT symbol, which
1702 indicates to the C program that the setpwent() routine is available
1703 for initializing sequential access to the passwd database.
1705 d_setpwent_r (d_setpwent_r.U):
1706 This variable conditionally defines the HAS_SETPWENT_R symbol,
1707 which indicates to the C program that the setpwent_r()
1708 routine is available.
1710 d_setregid (d_setregid.U):
1711 This variable conditionally defines HAS_SETREGID if setregid() is
1712 available to change the real and effective gid of the current
1715 d_setresgid (d_setregid.U):
1716 This variable conditionally defines HAS_SETRESGID if setresgid() is
1717 available to change the real, effective and saved gid of the current
1720 d_setresuid (d_setreuid.U):
1721 This variable conditionally defines HAS_SETREUID if setresuid() is
1722 available to change the real, effective and saved uid of the current
1725 d_setreuid (d_setreuid.U):
1726 This variable conditionally defines HAS_SETREUID if setreuid() is
1727 available to change the real and effective uid of the current
1730 d_setrgid (d_setrgid.U):
1731 This variable conditionally defines the HAS_SETRGID symbol, which
1732 indicates to the C program that the setrgid() routine is available
1733 to change the real gid of the current program.
1735 d_setruid (d_setruid.U):
1736 This variable conditionally defines the HAS_SETRUID symbol, which
1737 indicates to the C program that the setruid() routine is available
1738 to change the real uid of the current program.
1740 d_setsent (d_setsent.U):
1741 This variable conditionally defines HAS_SETSERVENT if setservent() is
1744 d_setservent_r (d_setservent_r.U):
1745 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1746 which indicates to the C program that the setservent_r()
1747 routine is available.
1749 d_setsid (d_setsid.U):
1750 This variable conditionally defines HAS_SETSID if setsid() is
1751 available to set the process group ID.
1753 d_setvbuf (d_setvbuf.U):
1754 This variable conditionally defines the HAS_SETVBUF symbol, which
1755 indicates to the C program that the setvbuf() routine is available
1756 to change buffering on an open stdio stream.
1759 This variable conditionally defines the USE_SFIO symbol,
1760 and indicates whether sfio is available (and should be used).
1763 This variable conditionally defines the HAS_SHM symbol, which
1764 indicates that the entire shm*(2) library is present.
1766 d_shmat (d_shmat.U):
1767 This variable conditionally defines the HAS_SHMAT symbol, which
1768 indicates to the C program that the shmat() routine is available.
1770 d_shmatprototype (d_shmat.U):
1771 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1772 symbol, which indicates that sys/shm.h has a prototype for
1775 d_shmctl (d_shmctl.U):
1776 This variable conditionally defines the HAS_SHMCTL symbol, which
1777 indicates to the C program that the shmctl() routine is available.
1779 d_shmdt (d_shmdt.U):
1780 This variable conditionally defines the HAS_SHMDT symbol, which
1781 indicates to the C program that the shmdt() routine is available.
1783 d_shmget (d_shmget.U):
1784 This variable conditionally defines the HAS_SHMGET symbol, which
1785 indicates to the C program that the shmget() routine is available.
1787 d_sigaction (d_sigaction.U):
1788 This variable conditionally defines the HAS_SIGACTION symbol, which
1789 indicates that the Vr4 sigaction() routine is available.
1791 d_sigprocmask (d_sigprocmask.U):
1792 This variable conditionally defines HAS_SIGPROCMASK
1793 if sigprocmask() is available to examine or change the signal mask
1794 of the calling process.
1796 d_sigsetjmp (d_sigsetjmp.U):
1797 This variable conditionally defines the HAS_SIGSETJMP symbol,
1798 which indicates that the sigsetjmp() routine is available to
1799 call setjmp() and optionally save the process's signal mask.
1801 d_sockatmark (d_sockatmark.U):
1802 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1803 indicates to the C program that the sockatmark() routine is available.
1805 d_sockatmarkproto (d_sockatmarkproto.U):
1806 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1807 which indicates to the C program that the system provides
1808 a prototype for the sockatmark() function. Otherwise, it is
1809 up to the program to supply one.
1811 d_socket (d_socket.U):
1812 This variable conditionally defines HAS_SOCKET, which indicates
1813 that the BSD socket interface is supported.
1815 d_socklen_t (d_socklen_t.U):
1816 This symbol will be defined if the C compiler supports socklen_t.
1818 d_sockpair (d_socket.U):
1819 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1820 indicates that the BSD socketpair() is supported.
1822 d_socks5_init (d_socks5_init.U):
1823 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1824 indicates to the C program that the socks5_init() routine is available.
1826 d_sqrtl (d_sqrtl.U):
1827 This variable conditionally defines the HAS_SQRTL symbol, which
1828 indicates to the C program that the sqrtl() routine is available.
1830 d_srand48_r (d_srand48_r.U):
1831 This variable conditionally defines the HAS_SRAND48_R symbol,
1832 which indicates to the C program that the srand48_r()
1833 routine is available.
1835 d_srandom_r (d_srandom_r.U):
1836 This variable conditionally defines the HAS_SRANDOM_R symbol,
1837 which indicates to the C program that the srandom_r()
1838 routine is available.
1840 d_sresgproto (d_sresgproto.U):
1841 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1842 which indicates to the C program that the system provides
1843 a prototype for the setresgid() function. Otherwise, it is
1844 up to the program to supply one.
1846 d_sresuproto (d_sresuproto.U):
1847 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1848 which indicates to the C program that the system provides
1849 a prototype for the setresuid() function. Otherwise, it is
1850 up to the program to supply one.
1852 d_statblks (d_statblks.U):
1853 This variable conditionally defines USE_STAT_BLOCKS
1854 if this system has a stat structure declaring
1855 st_blksize and st_blocks.
1857 d_statfs_f_flags (d_statfs_f_flags.U):
1858 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1859 symbol, which indicates to struct statfs from has f_flags member.
1860 This kind of struct statfs is coming from sys/mount.h (BSD),
1861 not from sys/statfs.h (SYSV).
1863 d_statfs_s (d_statfs_s.U):
1864 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1865 which indicates that the struct statfs is supported.
1867 d_statvfs (d_statvfs.U):
1868 This variable conditionally defines the HAS_STATVFS symbol, which
1869 indicates to the C program that the statvfs() routine is available.
1871 d_stdio_cnt_lval (d_stdstdio.U):
1872 This variable conditionally defines STDIO_CNT_LVALUE if the
1873 FILE_cnt macro can be used as an lvalue.
1875 d_stdio_ptr_lval (d_stdstdio.U):
1876 This variable conditionally defines STDIO_PTR_LVALUE if the
1877 FILE_ptr macro can be used as an lvalue.
1879 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
1880 This symbol is defined if using the FILE_ptr macro as an lvalue
1881 to increase the pointer by n leaves File_cnt(fp) unchanged.
1883 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1884 This symbol is defined if using the FILE_ptr macro as an lvalue
1885 to increase the pointer by n has the side effect of decreasing the
1886 value of File_cnt(fp) by n.
1888 d_stdio_stream_array (stdio_streams.U):
1889 This variable tells whether there is an array holding
1892 d_stdiobase (d_stdstdio.U):
1893 This variable conditionally defines USE_STDIO_BASE if this system
1894 has a FILE structure declaring a usable _base field (or equivalent)
1897 d_stdstdio (d_stdstdio.U):
1898 This variable conditionally defines USE_STDIO_PTR if this system
1899 has a FILE structure declaring usable _ptr and _cnt fields (or
1900 equivalent) in stdio.h.
1902 d_strchr (d_strchr.U):
1903 This variable conditionally defines HAS_STRCHR if strchr() and
1904 strrchr() are available for string searching.
1906 d_strcoll (d_strcoll.U):
1907 This variable conditionally defines HAS_STRCOLL if strcoll() is
1908 available to compare strings using collating information.
1910 d_strctcpy (d_strctcpy.U):
1911 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1912 indicates to the C program that this C compiler knows how to copy
1915 d_strerrm (d_strerror.U):
1916 This variable holds what Strerrr is defined as to translate an error
1917 code condition into an error message string. It could be 'strerror'
1918 or a more complex macro emulating strrror with sys_errlist[], or the
1919 "unknown" string when both strerror and sys_errlist are missing.
1921 d_strerror (d_strerror.U):
1922 This variable conditionally defines HAS_STRERROR if strerror() is
1923 available to translate error numbers to strings.
1925 d_strerror_r (d_strerror_r.U):
1926 This variable conditionally defines the HAS_STRERROR_R symbol,
1927 which indicates to the C program that the strerror_r()
1928 routine is available.
1930 d_strftime (d_strftime.U):
1931 This variable conditionally defines the HAS_STRFTIME symbol, which
1932 indicates to the C program that the strftime() routine is available.
1934 d_strtod (d_strtod.U):
1935 This variable conditionally defines the HAS_STRTOD symbol, which
1936 indicates to the C program that the strtod() routine is available
1937 to provide better numeric string conversion than atof().
1939 d_strtol (d_strtol.U):
1940 This variable conditionally defines the HAS_STRTOL symbol, which
1941 indicates to the C program that the strtol() routine is available
1942 to provide better numeric string conversion than atoi() and friends.
1944 d_strtold (d_strtold.U):
1945 This variable conditionally defines the HAS_STRTOLD symbol, which
1946 indicates to the C program that the strtold() routine is available.
1948 d_strtoll (d_strtoll.U):
1949 This variable conditionally defines the HAS_STRTOLL symbol, which
1950 indicates to the C program that the strtoll() routine is available.
1952 d_strtoq (d_strtoq.U):
1953 This variable conditionally defines the HAS_STRTOQ symbol, which
1954 indicates to the C program that the strtoq() routine is available.
1956 d_strtoul (d_strtoul.U):
1957 This variable conditionally defines the HAS_STRTOUL symbol, which
1958 indicates to the C program that the strtoul() routine is available
1959 to provide conversion of strings to unsigned long.
1961 d_strtoull (d_strtoull.U):
1962 This variable conditionally defines the HAS_STRTOULL symbol, which
1963 indicates to the C program that the strtoull() routine is available.
1965 d_strtouq (d_strtouq.U):
1966 This variable conditionally defines the HAS_STRTOUQ symbol, which
1967 indicates to the C program that the strtouq() routine is available.
1969 d_strxfrm (d_strxfrm.U):
1970 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1971 available to transform strings.
1973 d_suidsafe (d_dosuid.U):
1974 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1975 if setuid scripts can be secure. This test looks in /dev/fd/.
1977 d_symlink (d_symlink.U):
1978 This variable conditionally defines the HAS_SYMLINK symbol, which
1979 indicates to the C program that the symlink() routine is available
1980 to create symbolic links.
1982 d_syscall (d_syscall.U):
1983 This variable conditionally defines HAS_SYSCALL if syscall() is
1984 available call arbitrary system calls.
1986 d_syscallproto (d_syscallproto.U):
1987 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
1988 which indicates to the C program that the system provides
1989 a prototype for the syscall() function. Otherwise, it is
1990 up to the program to supply one.
1992 d_sysconf (d_sysconf.U):
1993 This variable conditionally defines the HAS_SYSCONF symbol, which
1994 indicates to the C program that the sysconf() routine is available
1995 to determine system related limits and options.
1997 d_sysernlst (d_strerror.U):
1998 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1999 is available to translate error numbers to the symbolic name.
2001 d_syserrlst (d_strerror.U):
2002 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2003 available to translate error numbers to strings.
2005 d_system (d_system.U):
2006 This variable conditionally defines HAS_SYSTEM if system() is
2007 available to issue a shell command.
2009 d_tcgetpgrp (d_tcgtpgrp.U):
2010 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2011 indicates to the C program that the tcgetpgrp() routine is available.
2012 to get foreground process group ID.
2014 d_tcsetpgrp (d_tcstpgrp.U):
2015 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2016 indicates to the C program that the tcsetpgrp() routine is available
2017 to set foreground process group ID.
2019 d_telldir (d_readdir.U):
2020 This variable conditionally defines HAS_TELLDIR if telldir() is
2023 d_telldirproto (d_telldirproto.U):
2024 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2025 which indicates to the C program that the system provides
2026 a prototype for the telldir() function. Otherwise, it is
2027 up to the program to supply one.
2030 This variable conditionally defines the HAS_TIME symbol, which indicates
2031 that the time() routine exists. The time() routine is normaly
2032 provided on UNIX systems.
2034 d_times (d_times.U):
2035 This variable conditionally defines the HAS_TIMES symbol, which indicates
2036 that the times() routine exists. The times() routine is normaly
2037 provided on UNIX systems. You may have to include <sys/times.h>.
2039 d_tm_tm_gmtoff (i_time.U):
2040 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2041 indicates to the C program that the struct tm has the tm_gmtoff field.
2043 d_tm_tm_zone (i_time.U):
2044 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2045 indicates to the C program that the struct tm has the tm_zone field.
2047 d_tmpnam_r (d_tmpnam_r.U):
2048 This variable conditionally defines the HAS_TMPNAM_R symbol,
2049 which indicates to the C program that the tmpnam_r()
2050 routine is available.
2052 d_truncate (d_truncate.U):
2053 This variable conditionally defines HAS_TRUNCATE if truncate() is
2054 available to truncate files.
2056 d_ttyname_r (d_ttyname_r.U):
2057 This variable conditionally defines the HAS_TTYNAME_R symbol,
2058 which indicates to the C program that the ttyname_r()
2059 routine is available.
2061 d_tzname (d_tzname.U):
2062 This variable conditionally defines HAS_TZNAME if tzname[] is
2063 available to access timezone names.
2065 d_u32align (d_u32align.U):
2066 This variable tells whether you must access character data
2067 through U32-aligned pointers.
2069 d_ualarm (d_ualarm.U):
2070 This variable conditionally defines the HAS_UALARM symbol, which
2071 indicates to the C program that the ualarm() routine is available.
2073 d_umask (d_umask.U):
2074 This variable conditionally defines the HAS_UMASK symbol, which
2075 indicates to the C program that the umask() routine is available.
2076 to set and get the value of the file creation mask.
2078 d_uname (d_gethname.U):
2079 This variable conditionally defines the HAS_UNAME symbol, which
2080 indicates to the C program that the uname() routine may be
2081 used to derive the host name.
2083 d_union_semun (d_union_semun.U):
2084 This variable conditionally defines HAS_UNION_SEMUN if the
2085 union semun is defined by including <sys/sem.h>.
2087 d_unordered (d_unordered.U):
2088 This variable conditionally defines the HAS_UNORDERED symbol, which
2089 indicates to the C program that the unordered() routine is available.
2091 d_usleep (d_usleep.U):
2092 This variable conditionally defines HAS_USLEEP if usleep() is
2093 available to do high granularity sleeps.
2095 d_usleepproto (d_usleepproto.U):
2096 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2097 which indicates to the C program that the system provides
2098 a prototype for the usleep() function. Otherwise, it is
2099 up to the program to supply one.
2101 d_ustat (d_ustat.U):
2102 This variable conditionally defines HAS_USTAT if ustat() is
2103 available to query file system statistics by dev_t.
2105 d_vendorarch (vendorarch.U):
2106 This variable conditionally defined PERL_VENDORARCH.
2108 d_vendorbin (vendorbin.U):
2109 This variable conditionally defines PERL_VENDORBIN.
2111 d_vendorlib (vendorlib.U):
2112 This variable conditionally defines PERL_VENDORLIB.
2114 d_vfork (d_vfork.U):
2115 This variable conditionally defines the HAS_VFORK symbol, which
2116 indicates the vfork() routine is available.
2118 d_void_closedir (d_closedir.U):
2119 This variable conditionally defines VOID_CLOSEDIR if closedir()
2120 does not return a value.
2122 d_voidsig (d_voidsig.U):
2123 This variable conditionally defines VOIDSIG if this system
2124 declares "void (*signal(...))()" in signal.h. The old way was to
2125 declare it as "int (*signal(...))()".
2127 d_voidtty (i_sysioctl.U):
2128 This variable conditionally defines USE_IOCNOTTY to indicate that the
2129 ioctl() call with TIOCNOTTY should be used to void tty association.
2130 Otherwise (on USG probably), it is enough to close the standard file
2131 decriptors and do a setpgrp().
2133 d_volatile (d_volatile.U):
2134 This variable conditionally defines the HASVOLATILE symbol, which
2135 indicates to the C program that this C compiler knows about the
2136 volatile declaration.
2138 d_vprintf (d_vprintf.U):
2139 This variable conditionally defines the HAS_VPRINTF symbol, which
2140 indicates to the C program that the vprintf() routine is available
2141 to printf with a pointer to an argument list.
2143 d_wait4 (d_wait4.U):
2144 This variable conditionally defines the HAS_WAIT4 symbol, which
2145 indicates the wait4() routine is available.
2147 d_waitpid (d_waitpid.U):
2148 This variable conditionally defines HAS_WAITPID if waitpid() is
2149 available to wait for child process.
2151 d_wcstombs (d_wcstombs.U):
2152 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2153 indicates to the C program that the wcstombs() routine is available
2154 to convert wide character strings to multibyte strings.
2156 d_wctomb (d_wctomb.U):
2157 This variable conditionally defines the HAS_WCTOMB symbol, which
2158 indicates to the C program that the wctomb() routine is available
2159 to convert a wide character to a multibyte.
2161 d_writev (d_writev.U):
2162 This variable conditionally defines the HAS_WRITEV symbol, which
2163 indicates to the C program that the writev() routine is available.
2166 This variable conditionally defines the symbol XENIX, which alerts
2167 the C program that it runs under Xenix.
2170 This variable is used internally by Configure to determine the
2171 full pathname (if any) of the date program. After Configure runs,
2172 the value is reset to a plain "date" and is not useful.
2174 db_hashtype (i_db.U):
2175 This variable contains the type of the hash structure element
2176 in the <db.h> header file. In older versions of DB, it was
2177 int, while in newer ones it is u_int32_t.
2179 db_prefixtype (i_db.U):
2180 This variable contains the type of the prefix structure element
2181 in the <db.h> header file. In older versions of DB, it was
2182 int, while in newer ones it is size_t.
2184 db_version_major (i_db.U):
2185 This variable contains the major version number of
2186 Berkeley DB found in the <db.h> header file.
2188 db_version_minor (i_db.U):
2189 This variable contains the minor version number of
2190 Berkeley DB found in the <db.h> header file.
2191 For DB version 1 this is always 0.
2193 db_version_patch (i_db.U):
2194 This variable contains the patch version number of
2195 Berkeley DB found in the <db.h> header file.
2196 For DB version 1 this is always 0.
2198 defvoidused (voidflags.U):
2199 This variable contains the default value of the VOIDUSED symbol (15).
2201 direntrytype (i_dirent.U):
2202 This symbol is set to 'struct direct' or 'struct dirent' depending on
2203 whether dirent is available or not. You should use this pseudo type to
2204 portably declare your directory entries.
2207 This variable contains the extension that is to be used for the
2208 dynamically loaded modules that perl generaties.
2211 This variable contains the name of the dynamic loading file that
2212 will be used with the package.
2214 doublesize (doublesize.U):
2215 This variable contains the value of the DOUBLESIZE symbol, which
2216 indicates to the C program how many bytes there are in a double.
2218 drand01 (randfunc.U):
2219 Indicates the macro to be used to generate normalized
2220 random numbers. Uses randfunc, often divided by
2221 (double) (((unsigned long) 1 << randbits)) in order to
2222 normalize the result.
2223 In C programs, the macro 'Drand01' is mapped to drand01.
2225 drand48_r_proto (d_drand48_r.U):
2226 This variable encodes the prototype of drand48_r.
2227 It is zero if d_drand48_r is undef, and one of the
2228 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2231 dynamic_ext (Extensions.U):
2232 This variable holds a list of XS extension files we want to
2233 link dynamically into the package. It is used by Makefile.
2235 eagain (nblock_io.U):
2236 This variable bears the symbolic errno code set by read() when no
2237 data is present on the file and non-blocking I/O was enabled (otherwise,
2238 read() blocks naturally).
2241 This variable conditionally defines EBCDIC if this
2242 system uses EBCDIC encoding. Among other things, this
2243 means that the character ranges are not contiguous.
2247 This variable is used internally by Configure to determine the
2248 full pathname (if any) of the echo program. After Configure runs,
2249 the value is reset to a plain "echo" and is not useful.
2252 This variable is used internally by Configure to determine the
2253 full pathname (if any) of the egrep program. After Configure runs,
2254 the value is reset to a plain "egrep" and is not useful.
2257 This variable is defined but not used by Configure.
2258 The value is a plain '' and is not useful.
2260 endgrent_r_proto (d_endgrent_r.U):
2261 This variable encodes the prototype of endgrent_r.
2262 It is zero if d_endgrent_r is undef, and one of the
2263 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2266 endhostent_r_proto (d_endhostent_r.U):
2267 This variable encodes the prototype of endhostent_r.
2268 It is zero if d_endhostent_r is undef, and one of the
2269 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2272 endnetent_r_proto (d_endnetent_r.U):
2273 This variable encodes the prototype of endnetent_r.
2274 It is zero if d_endnetent_r is undef, and one of the
2275 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2278 endprotoent_r_proto (d_endprotoent_r.U):
2279 This variable encodes the prototype of endprotoent_r.
2280 It is zero if d_endprotoent_r is undef, and one of the
2281 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2284 endpwent_r_proto (d_endpwent_r.U):
2285 This variable encodes the prototype of endpwent_r.
2286 It is zero if d_endpwent_r is undef, and one of the
2287 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2290 endservent_r_proto (d_endservent_r.U):
2291 This variable encodes the prototype of endservent_r.
2292 It is zero if d_endservent_r is undef, and one of the
2293 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2297 When running under Eunice this variable contains a command which will
2298 convert a shell script to the proper form of text file for it to be
2299 executable by the shell. On other systems it is a no-op.
2302 This is an old synonym for _exe.
2305 This variable is used internally by Configure to determine the
2306 full pathname (if any) of the expr program. After Configure runs,
2307 the value is reset to a plain "expr" and is not useful.
2309 extensions (Extensions.U):
2310 This variable holds a list of all extension files (both XS and
2311 non-xs linked into the package. It is propagated to Config.pm
2312 and is typically used to test whether a particular extesion
2316 This variable holds a list of extra modules to install.
2318 fflushall (fflushall.U):
2319 This symbol, if defined, tells that to flush
2320 all pending stdio output one must loop through all
2321 the stdio file handles stored in an array and fflush them.
2322 Note that if fflushNULL is defined, fflushall will not
2323 even be probed for and will be left undefined.
2325 fflushNULL (fflushall.U):
2326 This symbol, if defined, tells that fflush(NULL) does flush
2327 all pending stdio output.
2330 This variable is defined but not used by Configure.
2331 The value is a plain '' and is not useful.
2333 firstmakefile (Unix.U):
2334 This variable defines the first file searched by make. On unix,
2335 it is makefile (then Makefile). On case-insensitive systems,
2336 it might be something else. This is only used to deal with
2337 convoluted make depend tricks.
2340 This variable is defined but not used by Configure.
2341 The value is a plain '' and is not useful.
2343 fpossize (fpossize.U):
2344 This variable contains the size of a fpostype in bytes.
2346 fpostype (fpostype.U):
2347 This variable defines Fpos_t to be something like fpos_t, long,
2348 uint, or whatever type is used to declare file positions in libc.
2350 freetype (mallocsrc.U):
2351 This variable contains the return type of free(). It is usually
2352 void, but occasionally int.
2355 This variable contains the command used by Configure
2356 to copy files from the target host. Useful and available
2357 only during Perl build.
2358 The string ':' if not cross-compiling.
2361 This variable contains the full pathname to 'ar', whether or
2362 not the user has specified 'portability'. This is only used
2366 This variable contains the full pathname to 'csh', whether or
2367 not the user has specified 'portability'. This is only used
2368 in the compiled C program, and we assume that all systems which
2369 can share this executable will have the same full pathname to
2372 full_sed (Loc_sed.U):
2373 This variable contains the full pathname to 'sed', whether or
2374 not the user has specified 'portability'. This is only used
2375 in the compiled C program, and we assume that all systems which
2376 can share this executable will have the same full pathname to
2379 gccosandvers (gccvers.U):
2380 If GNU cc (gcc) is used, this variable the operating system and
2381 version used to compile the gcc. It is set to '' if not gcc,
2382 or if nothing useful can be parsed as the os version.
2384 gccversion (gccvers.U):
2385 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2386 indicate whether the compiler is version 1 or 2. This is used in
2387 setting some of the default cflags. It is set to '' if not gcc.
2389 getgrent_r_proto (d_getgrent_r.U):
2390 This variable encodes the prototype of getgrent_r.
2391 It is zero if d_getgrent_r is undef, and one of the
2392 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2395 getgrgid_r_proto (d_getgrgid_r.U):
2396 This variable encodes the prototype of getgrgid_r.
2397 It is zero if d_getgrgid_r is undef, and one of the
2398 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2401 getgrnam_r_proto (d_getgrnam_r.U):
2402 This variable encodes the prototype of getgrnam_r.
2403 It is zero if d_getgrnam_r is undef, and one of the
2404 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2407 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2408 This variable encodes the prototype of gethostbyaddr_r.
2409 It is zero if d_gethostbyaddr_r is undef, and one of the
2410 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2413 gethostbyname_r_proto (d_gethostbyname_r.U):
2414 This variable encodes the prototype of gethostbyname_r.
2415 It is zero if d_gethostbyname_r is undef, and one of the
2416 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2419 gethostent_r_proto (d_gethostent_r.U):
2420 This variable encodes the prototype of gethostent_r.
2421 It is zero if d_gethostent_r is undef, and one of the
2422 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2425 getlogin_r_proto (d_getlogin_r.U):
2426 This variable encodes the prototype of getlogin_r.
2427 It is zero if d_getlogin_r is undef, and one of the
2428 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2431 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2432 This variable encodes the prototype of getnetbyaddr_r.
2433 It is zero if d_getnetbyaddr_r is undef, and one of the
2434 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2437 getnetbyname_r_proto (d_getnetbyname_r.U):
2438 This variable encodes the prototype of getnetbyname_r.
2439 It is zero if d_getnetbyname_r is undef, and one of the
2440 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2443 getnetent_r_proto (d_getnetent_r.U):
2444 This variable encodes the prototype of getnetent_r.
2445 It is zero if d_getnetent_r is undef, and one of the
2446 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2449 getprotobyname_r_proto (d_getprotobyname_r.U):
2450 This variable encodes the prototype of getprotobyname_r.
2451 It is zero if d_getprotobyname_r is undef, and one of the
2452 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2455 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2456 This variable encodes the prototype of getprotobynumber_r.
2457 It is zero if d_getprotobynumber_r is undef, and one of the
2458 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2461 getprotoent_r_proto (d_getprotoent_r.U):
2462 This variable encodes the prototype of getprotoent_r.
2463 It is zero if d_getprotoent_r is undef, and one of the
2464 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2467 getpwent_r_proto (d_getpwent_r.U):
2468 This variable encodes the prototype of getpwent_r.
2469 It is zero if d_getpwent_r is undef, and one of the
2470 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2473 getpwnam_r_proto (d_getpwnam_r.U):
2474 This variable encodes the prototype of getpwnam_r.
2475 It is zero if d_getpwnam_r is undef, and one of the
2476 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2479 getpwuid_r_proto (d_getpwuid_r.U):
2480 This variable encodes the prototype of getpwuid_r.
2481 It is zero if d_getpwuid_r is undef, and one of the
2482 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2485 getservbyname_r_proto (d_getservbyname_r.U):
2486 This variable encodes the prototype of getservbyname_r.
2487 It is zero if d_getservbyname_r is undef, and one of the
2488 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2491 getservbyport_r_proto (d_getservbyport_r.U):
2492 This variable encodes the prototype of getservbyport_r.
2493 It is zero if d_getservbyport_r is undef, and one of the
2494 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2497 getservent_r_proto (d_getservent_r.U):
2498 This variable encodes the prototype of getservent_r.
2499 It is zero if d_getservent_r is undef, and one of the
2500 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2503 getspnam_r_proto (d_getspnam_r.U):
2504 This variable encodes the prototype of getspnam_r.
2505 It is zero if d_getspnam_r is undef, and one of the
2506 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2510 This variable contains the format string used for printing a Gid_t.
2512 gidsign (gidsign.U):
2513 This variable contains the signedness of a gidtype.
2514 1 for unsigned, -1 for signed.
2516 gidsize (gidsize.U):
2517 This variable contains the size of a gidtype in bytes.
2519 gidtype (gidtype.U):
2520 This variable defines Gid_t to be something like gid_t, int,
2521 ushort, or whatever type is used to declare the return type
2522 of getgid(). Typically, it is the type of group ids in the kernel.
2525 This variable holds the general path (space-separated) used to
2526 find libraries. It may contain directories that do not exist on
2527 this platform, libpth is the cleaned-up version.
2530 This variable is used internally by Configure to determine the
2531 full pathname (if any) of the gmake program. After Configure runs,
2532 the value is reset to a plain "gmake" and is not useful.
2534 gmtime_r_proto (d_gmtime_r.U):
2535 This variable encodes the prototype of gmtime_r.
2536 It is zero if d_gmtime_r is undef, and one of the
2537 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2540 gnulibc_version (d_gnulibc.U):
2541 This variable contains the version number of the GNU C library.
2542 It is usually something like '2.2.5'. It is a plain '' if this
2543 is not the GNU C library, or if the version is unknown.
2546 This variable is used internally by Configure to determine the
2547 full pathname (if any) of the grep program. After Configure runs,
2548 the value is reset to a plain "grep" and is not useful.
2551 This variable contains a command that produces the text of the
2552 /etc/group file. This is normally "cat /etc/group", but can be
2553 "ypcat group" when NIS is used.
2554 On some systems, such as os390, there may be no equivalent
2555 command, in which case this variable is unset.
2557 groupstype (groupstype.U):
2558 This variable defines Groups_t to be something like gid_t, int,
2559 ushort, or whatever type is used for the second argument to
2560 getgroups() and setgroups(). Usually, this is the same as
2561 gidtype (gid_t), but sometimes it isn't.
2564 This variable is used internally by Configure to determine the
2565 full pathname (if any) of the gzip program. After Configure runs,
2566 the value is reset to a plain "gzip" and is not useful.
2568 h_fcntl (h_fcntl.U):
2569 This is variable gets set in various places to tell i_fcntl that
2570 <fcntl.h> should be included.
2572 h_sysfile (h_sysfile.U):
2573 This is variable gets set in various places to tell i_sys_file that
2574 <sys/file.h> should be included.
2577 Gives the type of hints used for previous answers. May be one of
2578 "default", "recommended" or "previous".
2581 This variable contains a command that produces the text of the
2582 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2583 "ypcat hosts" when NIS is used.
2584 On some systems, such as os390, there may be no equivalent
2585 command, in which case this variable is unset.
2588 This variable is the size of an I16 in bytes.
2591 This variable contains the C type used for Perl's I16.
2594 This variable is the size of an I32 in bytes.
2597 This variable contains the C type used for Perl's I32.
2600 This variable is the size of an I64 in bytes.
2603 This variable contains the C type used for Perl's I64.
2606 This variable is the size of an I8 in bytes.
2609 This variable contains the C type used for Perl's I8.
2611 i_arpainet (i_arpainet.U):
2612 This variable conditionally defines the I_ARPA_INET symbol,
2613 and indicates whether a C program should include <arpa/inet.h>.
2615 i_bsdioctl (i_sysioctl.U):
2616 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2617 indicates to the C program that <sys/bsdioctl.h> exists and should
2620 i_crypt (i_crypt.U):
2621 This variable conditionally defines the I_CRYPT symbol, and indicates
2622 whether a C program should include <crypt.h>.
2625 This variable conditionally defines the I_DB symbol, and indicates
2626 whether a C program may include Berkeley's DB include file <db.h>.
2629 This variable conditionally defines the I_DBM symbol, which
2630 indicates to the C program that <dbm.h> exists and should
2633 i_dirent (i_dirent.U):
2634 This variable conditionally defines I_DIRENT, which indicates
2635 to the C program that it should include <dirent.h>.
2638 This variable conditionally defines the I_DLD symbol, which
2639 indicates to the C program that <dld.h> (GNU dynamic loading)
2640 exists and should be included.
2642 i_dlfcn (i_dlfcn.U):
2643 This variable conditionally defines the I_DLFCN symbol, which
2644 indicates to the C program that <dlfcn.h> exists and should
2647 i_fcntl (i_fcntl.U):
2648 This variable controls the value of I_FCNTL (which tells
2649 the C program to include <fcntl.h>).
2651 i_float (i_float.U):
2652 This variable conditionally defines the I_FLOAT symbol, and indicates
2653 whether a C program may include <float.h> to get symbols like DBL_MAX
2654 or DBL_MIN, i.e. machine dependent floating point values.
2657 This variable conditionally defines the I_FP symbol, and indicates
2658 whether a C program should include <fp.h>.
2660 i_fp_class (i_fp_class.U):
2661 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2662 whether a C program should include <fp_class.h>.
2665 This variable conditionally defines the I_GDBM symbol, which
2666 indicates to the C program that <gdbm.h> exists and should
2670 This variable conditionally defines the I_GRP symbol, and indicates
2671 whether a C program should include <grp.h>.
2673 i_ieeefp (i_ieeefp.U):
2674 This variable conditionally defines the I_IEEEFP symbol, and indicates
2675 whether a C program should include <ieeefp.h>.
2677 i_inttypes (i_inttypes.U):
2678 This variable conditionally defines the I_INTTYPES symbol,
2679 and indicates whether a C program should include <inttypes.h>.
2681 i_langinfo (i_langinfo.U):
2682 This variable conditionally defines the I_LANGINFO symbol,
2683 and indicates whether a C program should include <langinfo.h>.
2685 i_libutil (i_libutil.U):
2686 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2687 whether a C program should include <libutil.h>.
2689 i_limits (i_limits.U):
2690 This variable conditionally defines the I_LIMITS symbol, and indicates
2691 whether a C program may include <limits.h> to get symbols like WORD_BIT
2694 i_locale (i_locale.U):
2695 This variable conditionally defines the I_LOCALE symbol,
2696 and indicates whether a C program should include <locale.h>.
2698 i_machcthr (i_machcthr.U):
2699 This variable conditionally defines the I_MACH_CTHREADS symbol,
2700 and indicates whether a C program should include <mach/cthreads.h>.
2702 i_malloc (i_malloc.U):
2703 This variable conditionally defines the I_MALLOC symbol, and indicates
2704 whether a C program should include <malloc.h>.
2707 This variable conditionally defines the I_MATH symbol, and indicates
2708 whether a C program may include <math.h>.
2710 i_memory (i_memory.U):
2711 This variable conditionally defines the I_MEMORY symbol, and indicates
2712 whether a C program should include <memory.h>.
2714 i_mntent (i_mntent.U):
2715 This variable conditionally defines the I_MNTENT symbol, and indicates
2716 whether a C program should include <mntent.h>.
2719 This variable conditionally defines the I_NDBM symbol, which
2720 indicates to the C program that <ndbm.h> exists and should
2723 i_netdb (i_netdb.U):
2724 This variable conditionally defines the I_NETDB symbol, and indicates
2725 whether a C program should include <netdb.h>.
2727 i_neterrno (i_neterrno.U):
2728 This variable conditionally defines the I_NET_ERRNO symbol, which
2729 indicates to the C program that <net/errno.h> exists and should
2732 i_netinettcp (i_netinettcp.U):
2733 This variable conditionally defines the I_NETINET_TCP symbol,
2734 and indicates whether a C program should include <netinet/tcp.h>.
2737 This variable conditionally defines I_NETINET_IN, which indicates
2738 to the C program that it should include <netinet/in.h>. Otherwise,
2739 you may try <sys/in.h>.
2742 This variable conditionally defines the I_POLL symbol, and indicates
2743 whether a C program should include <poll.h>.
2746 This variable conditionally defines the I_PROT symbol, and indicates
2747 whether a C program should include <prot.h>.
2749 i_pthread (i_pthread.U):
2750 This variable conditionally defines the I_PTHREAD symbol,
2751 and indicates whether a C program should include <pthread.h>.
2754 This variable conditionally defines I_PWD, which indicates
2755 to the C program that it should include <pwd.h>.
2757 i_rpcsvcdbm (i_dbm.U):
2758 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2759 indicates to the C program that <rpcsvc/dbm.h> exists and should
2760 be included. Some System V systems might need this instead of <dbm.h>.
2763 This variable conditionally defines the I_SFIO symbol,
2764 and indicates whether a C program should include <sfio.h>.
2766 i_sgtty (i_termio.U):
2767 This variable conditionally defines the I_SGTTY symbol, which
2768 indicates to the C program that it should include <sgtty.h> rather
2771 i_shadow (i_shadow.U):
2772 This variable conditionally defines the I_SHADOW symbol, and indicates
2773 whether a C program should include <shadow.h>.
2775 i_socks (i_socks.U):
2776 This variable conditionally defines the I_SOCKS symbol, and indicates
2777 whether a C program should include <socks.h>.
2779 i_stdarg (i_varhdr.U):
2780 This variable conditionally defines the I_STDARG symbol, which
2781 indicates to the C program that <stdarg.h> exists and should
2784 i_stddef (i_stddef.U):
2785 This variable conditionally defines the I_STDDEF symbol, which
2786 indicates to the C program that <stddef.h> exists and should
2789 i_stdlib (i_stdlib.U):
2790 This variable conditionally defines the I_STDLIB symbol, which
2791 indicates to the C program that <stdlib.h> exists and should
2794 i_string (i_string.U):
2795 This variable conditionally defines the I_STRING symbol, which
2796 indicates that <string.h> should be included rather than <strings.h>.
2798 i_sunmath (i_sunmath.U):
2799 This variable conditionally defines the I_SUNMATH symbol, and indicates
2800 whether a C program should include <sunmath.h>.
2802 i_sysaccess (i_sysaccess.U):
2803 This variable conditionally defines the I_SYS_ACCESS symbol,
2804 and indicates whether a C program should include <sys/access.h>.
2806 i_sysdir (i_sysdir.U):
2807 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2808 whether a C program should include <sys/dir.h>.
2810 i_sysfile (i_sysfile.U):
2811 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2812 whether a C program should include <sys/file.h> to get R_OK and friends.
2814 i_sysfilio (i_sysioctl.U):
2815 This variable conditionally defines the I_SYS_FILIO symbol, which
2816 indicates to the C program that <sys/filio.h> exists and should
2817 be included in preference to <sys/ioctl.h>.
2820 This variable conditionally defines I_SYS_IN, which indicates
2821 to the C program that it should include <sys/in.h> instead of
2824 i_sysioctl (i_sysioctl.U):
2825 This variable conditionally defines the I_SYS_IOCTL symbol, which
2826 indicates to the C program that <sys/ioctl.h> exists and should
2829 i_syslog (i_syslog.U):
2830 This variable conditionally defines the I_SYSLOG symbol,
2831 and indicates whether a C program should include <syslog.h>.
2833 i_sysmman (i_sysmman.U):
2834 This variable conditionally defines the I_SYS_MMAN symbol, and
2835 indicates whether a C program should include <sys/mman.h>.
2837 i_sysmode (i_sysmode.U):
2838 This variable conditionally defines the I_SYSMODE symbol,
2839 and indicates whether a C program should include <sys/mode.h>.
2841 i_sysmount (i_sysmount.U):
2842 This variable conditionally defines the I_SYSMOUNT symbol,
2843 and indicates whether a C program should include <sys/mount.h>.
2845 i_sysndir (i_sysndir.U):
2846 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2847 whether a C program should include <sys/ndir.h>.
2849 i_sysparam (i_sysparam.U):
2850 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2851 whether a C program should include <sys/param.h>.
2853 i_sysresrc (i_sysresrc.U):
2854 This variable conditionally defines the I_SYS_RESOURCE symbol,
2855 and indicates whether a C program should include <sys/resource.h>.
2857 i_syssecrt (i_syssecrt.U):
2858 This variable conditionally defines the I_SYS_SECURITY symbol,
2859 and indicates whether a C program should include <sys/security.h>.
2861 i_sysselct (i_sysselct.U):
2862 This variable conditionally defines I_SYS_SELECT, which indicates
2863 to the C program that it should include <sys/select.h> in order to
2864 get the definition of struct timeval.
2866 i_syssockio (i_sysioctl.U):
2867 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2868 C program that socket ioctl codes may be found in <sys/sockio.h>
2869 instead of <sys/ioctl.h>.
2871 i_sysstat (i_sysstat.U):
2872 This variable conditionally defines the I_SYS_STAT symbol,
2873 and indicates whether a C program should include <sys/stat.h>.
2875 i_sysstatfs (i_sysstatfs.U):
2876 This variable conditionally defines the I_SYSSTATFS symbol,
2877 and indicates whether a C program should include <sys/statfs.h>.
2879 i_sysstatvfs (i_sysstatvfs.U):
2880 This variable conditionally defines the I_SYSSTATVFS symbol,
2881 and indicates whether a C program should include <sys/statvfs.h>.
2883 i_systime (i_time.U):
2884 This variable conditionally defines I_SYS_TIME, which indicates
2885 to the C program that it should include <sys/time.h>.
2887 i_systimek (i_time.U):
2888 This variable conditionally defines I_SYS_TIME_KERNEL, which
2889 indicates to the C program that it should include <sys/time.h>
2890 with KERNEL defined.
2892 i_systimes (i_systimes.U):
2893 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2894 whether a C program should include <sys/times.h>.
2896 i_systypes (i_systypes.U):
2897 This variable conditionally defines the I_SYS_TYPES symbol,
2898 and indicates whether a C program should include <sys/types.h>.
2900 i_sysuio (i_sysuio.U):
2901 This variable conditionally defines the I_SYSUIO symbol, and indicates
2902 whether a C program should include <sys/uio.h>.
2904 i_sysun (i_sysun.U):
2905 This variable conditionally defines I_SYS_UN, which indicates
2906 to the C program that it should include <sys/un.h> to get UNIX
2907 domain socket definitions.
2909 i_sysutsname (i_sysutsname.U):
2910 This variable conditionally defines the I_SYSUTSNAME symbol,
2911 and indicates whether a C program should include <sys/utsname.h>.
2913 i_sysvfs (i_sysvfs.U):
2914 This variable conditionally defines the I_SYSVFS symbol,
2915 and indicates whether a C program should include <sys/vfs.h>.
2917 i_syswait (i_syswait.U):
2918 This variable conditionally defines I_SYS_WAIT, which indicates
2919 to the C program that it should include <sys/wait.h>.
2921 i_termio (i_termio.U):
2922 This variable conditionally defines the I_TERMIO symbol, which
2923 indicates to the C program that it should include <termio.h> rather
2926 i_termios (i_termio.U):
2927 This variable conditionally defines the I_TERMIOS symbol, which
2928 indicates to the C program that the POSIX <termios.h> file is
2932 This variable conditionally defines I_TIME, which indicates
2933 to the C program that it should include <time.h>.
2935 i_unistd (i_unistd.U):
2936 This variable conditionally defines the I_UNISTD symbol, and indicates
2937 whether a C program should include <unistd.h>.
2939 i_ustat (i_ustat.U):
2940 This variable conditionally defines the I_USTAT symbol, and indicates
2941 whether a C program should include <ustat.h>.
2943 i_utime (i_utime.U):
2944 This variable conditionally defines the I_UTIME symbol, and indicates
2945 whether a C program should include <utime.h>.
2947 i_values (i_values.U):
2948 This variable conditionally defines the I_VALUES symbol, and indicates
2949 whether a C program may include <values.h> to get symbols like MAXLONG
2952 i_varargs (i_varhdr.U):
2953 This variable conditionally defines I_VARARGS, which indicates
2954 to the C program that it should include <varargs.h>.
2956 i_varhdr (i_varhdr.U):
2957 Contains the name of the header to be included to get va_dcl definition.
2958 Typically one of varargs.h or stdarg.h.
2960 i_vfork (i_vfork.U):
2961 This variable conditionally defines the I_VFORK symbol, and indicates
2962 whether a C program should include vfork.h.
2964 ignore_versioned_solibs (libs.U):
2965 This variable should be non-empty if non-versioned shared
2966 libraries (libfoo.so.x.y) are to be ignored (because they
2967 cannot be linked against).
2969 inc_version_list (inc_version_list.U):
2970 This variable specifies the list of subdirectories in over
2971 which perl.c:incpush() and lib/lib.pm will automatically
2972 search when adding directories to @INC. The elements in
2973 the list are separated by spaces. This is only useful
2974 if you have a perl library directory tree structured like the
2975 default one. See INSTALL for how this works. The versioned
2976 site_perl directory was introduced in 5.005, so that is the
2977 lowest possible value.
2979 inc_version_list_init (inc_version_list.U):
2980 This variable holds the same list as inc_version_list, but
2981 each item is enclosed in double quotes and separated by commas,
2982 suitable for use in the PERL_INC_VERSION_LIST initialization.
2985 This variable must preceed the normal include path to get hte
2986 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2987 Value can be "" or "/bsd43" on mips.
2990 This variable is defined but not used by Configure.
2991 The value is a plain '' and is not useful.
2993 installarchlib (archlib.U):
2994 This variable is really the same as archlibexp but may differ on
2995 those systems using AFS. For extra portability, only this variable
2996 should be used in makefiles.
2999 This variable is the same as binexp unless AFS is running in which case
3000 the user is explicitely prompted for it. This variable should always
3001 be used in your makefiles for maximum portability.
3003 installman1dir (man1dir.U):
3004 This variable is really the same as man1direxp, unless you are using
3005 AFS in which case it points to the read/write location whereas
3006 man1direxp only points to the read-only access location. For extra
3007 portability, you should only use this variable within your makefiles.
3009 installman3dir (man3dir.U):
3010 This variable is really the same as man3direxp, unless you are using
3011 AFS in which case it points to the read/write location whereas
3012 man3direxp only points to the read-only access location. For extra
3013 portability, you should only use this variable within your makefiles.
3015 installprefix (installprefix.U):
3016 This variable holds the name of the directory below which
3017 "make install" will install the package. For most users, this
3018 is the same as prefix. However, it is useful for
3019 installing the software into a different (usually temporary)
3020 location after which it can be bundled up and moved somehow
3021 to the final location specified by prefix.
3023 installprefixexp (installprefix.U):
3024 This variable holds the full absolute path of installprefix
3025 with all ~-expansion done.
3027 installprivlib (privlib.U):
3028 This variable is really the same as privlibexp but may differ on
3029 those systems using AFS. For extra portability, only this variable
3030 should be used in makefiles.
3032 installscript (scriptdir.U):
3033 This variable is usually the same as scriptdirexp, unless you are on
3034 a system running AFS, in which case they may differ slightly. You
3035 should always use this variable within your makefiles for portability.
3037 installsitearch (sitearch.U):
3038 This variable is really the same as sitearchexp but may differ on
3039 those systems using AFS. For extra portability, only this variable
3040 should be used in makefiles.
3042 installsitebin (sitebin.U):
3043 This variable is usually the same as sitebinexp, unless you are on
3044 a system running AFS, in which case they may differ slightly. You
3045 should always use this variable within your makefiles for portability.
3047 installsitelib (sitelib.U):
3048 This variable is really the same as sitelibexp but may differ on
3049 those systems using AFS. For extra portability, only this variable
3050 should be used in makefiles.
3052 installstyle (installstyle.U):
3053 This variable describes the "style" of the perl installation.
3054 This is intended to be useful for tools that need to
3055 manipulate entire perl distributions. Perl itself doesn't use
3056 this to find its libraries -- the library directories are
3057 stored directly in Config.pm. Currently, there are only two
3058 styles: "lib" and "lib/perl5". The default library locations
3059 (e.g. privlib, sitelib) are either $prefix/lib or
3060 $prefix/lib/perl5. The former is useful if $prefix is a
3061 directory dedicated to perl (e.g. /opt/perl), while the latter
3062 is useful if $prefix is shared by many packages, e.g. if
3064 This may later be extended to include other information, so
3065 be careful with pattern-matching on the results.
3066 For compatibility with perl5.005 and earlier, the default
3067 setting is based on whether or not $prefix contains the string
3070 installusrbinperl (instubperl.U):
3071 This variable tells whether Perl should be installed also as
3072 /usr/bin/perl in addition to
3075 installvendorarch (vendorarch.U):
3076 This variable is really the same as vendorarchexp but may differ on
3077 those systems using AFS. For extra portability, only this variable
3078 should be used in makefiles.
3080 installvendorbin (vendorbin.U):
3081 This variable is really the same as vendorbinexp but may differ on
3082 those systems using AFS. For extra portability, only this variable
3083 should be used in makefiles.
3085 installvendorlib (vendorlib.U):
3086 This variable is really the same as vendorlibexp but may differ on
3087 those systems using AFS. For extra portability, only this variable
3088 should be used in makefiles.
3090 intsize (intsize.U):
3091 This variable contains the value of the INTSIZE symbol, which
3092 indicates to the C program how many bytes there are in an int.
3094 issymlink (issymlink.U):
3095 This variable holds the test command to test for a symbolic link
3096 (if they are supported). Typical values include 'test -h' and
3099 ivdformat (perlxvf.U):
3100 This variable contains the format string used for printing
3101 a Perl IV as a signed decimal integer.
3104 This variable is the size of an IV in bytes.
3107 This variable contains the C type used for Perl's IV.
3109 known_extensions (Extensions.U):
3110 This variable holds a list of all XS extensions included in
3114 This variable is defined but not used by Configure.
3115 The value is a plain '' and is not useful.
3118 This variable indicates the program to be used to link
3119 libraries for dynamic loading. On some systems, it is 'ld'.
3120 On ELF systems, it should be $cc. Mostly, we'll try to respect
3121 the hint file setting.
3123 lddlflags (dlsrc.U):
3124 This variable contains any special flags that might need to be
3125 passed to $ld to create a shared library suitable for dynamic
3126 loading. It is up to the makefile to use it. For hpux, it
3127 should be '-b'. For sunos 4.1, it is empty.
3129 ldflags (ccflags.U):
3130 This variable contains any additional C loader flags desired by
3131 the user. It is up to the Makefile to use this.
3133 ldflags_uselargefiles (uselfs.U):
3134 This variable contains the loader flags needed by large file builds
3135 and added to ldflags by hints files.
3137 ldlibpthname (libperl.U):
3138 This variable holds the name of the shared library
3139 search path, often LD_LIBRARY_PATH. To get an empty
3140 string, the hints file must set this to 'none'.
3143 This variable is used internally by Configure to determine the
3144 full pathname (if any) of the less program. After Configure runs,
3145 the value is reset to a plain "less" and is not useful.
3148 This is an old synonym for _a.
3151 This variable contains the location of the C library.
3153 libperl (libperl.U):
3154 The perl executable is obtained by linking perlmain.c with
3155 libperl, any static extensions (usually just DynaLoader),
3156 and any other libraries needed on this system. libperl
3157 is usually libperl.a, but can also be libperl.so.xxx if
3158 the user wishes to build a perl executable with a shared
3162 This variable holds the general path (space-separated) used to find
3163 libraries. It is intended to be used by other units.
3166 This variable holds the additional libraries we want to use.
3167 It is up to the Makefile to deal with it. The list can be empty.
3170 This variable holds the directory names aka dirnames of the libraries
3171 we found and accepted, duplicates are removed.
3174 This variable holds the filenames aka basenames of the libraries
3175 we found and accepted.
3178 This variable holds the full pathnames of the libraries
3179 we found and accepted.
3182 This variable holds the directory names probed for libraries.
3184 libswanted (Myinit.U):
3185 This variable holds a list of all the libraries we want to
3186 search. The order is chosen to pick up the c library
3187 ahead of ucb or bsd libraries for SVR4.
3189 libswanted_uselargefiles (uselfs.U):
3190 This variable contains the libraries needed by large file builds
3191 and added to ldflags by hints files. It is a space separated list
3192 of the library names without the "lib" prefix or any suffix, just
3196 This variable is defined but not used by Configure.
3197 The value is a plain '' and is not useful.
3200 This variable is defined but not used by Configure.
3201 The value is a plain '' and is not useful.
3203 lkflags (ccflags.U):
3204 This variable contains any additional C partial linker flags desired by
3205 the user. It is up to the Makefile to use this.
3208 This variable is used internally by Configure to determine the
3209 full pathname (if any) of the ln program. After Configure runs,
3210 the value is reset to a plain "ln" and is not useful.
3213 This variable holds the name of the command to make
3214 symbolic links (if they are supported). It can be used
3215 in the Makefile. It is either 'ln -s' or 'ln'
3217 localtime_r_proto (d_localtime_r.U):
3218 This variable encodes the prototype of localtime_r.
3219 It is zero if d_localtime_r is undef, and one of the
3220 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3223 locincpth (ccflags.U):
3224 This variable contains a list of additional directories to be
3225 searched by the compiler. The appropriate '-I' directives will
3226 be added to ccflags. This is intended to simplify setting
3227 local directories from the Configure command line.
3228 It's not much, but it parallels the loclibpth stuff in libpth.U.
3230 loclibpth (libpth.U):
3231 This variable holds the paths (space-separated) used to find local
3232 libraries. It is prepended to libpth, and is intended to be easily
3233 set from the command line.
3235 longdblsize (d_longdbl.U):
3236 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3237 indicates to the C program how many bytes there are in a long double,
3238 if this system supports long doubles.
3240 longlongsize (d_longlong.U):
3241 This variable contains the value of the LONGLONGSIZE symbol, which
3242 indicates to the C program how many bytes there are in a long long,
3243 if this system supports long long.
3245 longsize (intsize.U):
3246 This variable contains the value of the LONGSIZE symbol, which
3247 indicates to the C program how many bytes there are in a long.
3250 This variable is defined but not used by Configure.
3251 The value is a plain '' and is not useful.
3254 This variable is defined but not used by Configure.
3255 The value is a plain '' and is not useful.
3258 This variable is used internally by Configure to determine the
3259 full pathname (if any) of the ls program. After Configure runs,
3260 the value is reset to a plain "ls" and is not useful.
3262 lseeksize (lseektype.U):
3263 This variable defines lseektype to be something like off_t, long,
3264 or whatever type is used to declare lseek offset's type in the
3265 kernel (which also appears to be lseek's return type).
3267 lseektype (lseektype.U):
3268 This variable defines lseektype to be something like off_t, long,
3269 or whatever type is used to declare lseek offset's type in the
3270 kernel (which also appears to be lseek's return type).
3273 This variable is defined but not used by Configure.
3274 The value is a plain '' and is not useful.
3277 This variable is defined but not used by Configure.
3278 The value is a plain '' and is not useful.
3281 This variable is used internally by Configure to determine the
3282 full pathname (if any) of the make program. After Configure runs,
3283 the value is reset to a plain "make" and is not useful.
3285 make_set_make (make.U):
3286 Some versions of 'make' set the variable MAKE. Others do not.
3287 This variable contains the string to be included in Makefile.SH
3288 so that MAKE is set if needed, and not if not needed.
3289 Possible values are:
3290 make_set_make='#' # If your make program handles this for you,
3291 make_set_make="MAKE=$make" # if it doesn't.
3292 I used a comment character so that we can distinguish a
3293 'set' value (from a previous config.sh or Configure '-D' option)
3294 from an uncomputed value.
3296 mallocobj (mallocsrc.U):
3297 This variable contains the name of the malloc.o that this package
3298 generates, if that malloc.o is preferred over the system malloc.
3299 Otherwise the value is null. This variable is intended for generating
3300 Makefiles. See mallocsrc.
3302 mallocsrc (mallocsrc.U):
3303 This variable contains the name of the malloc.c that comes with
3304 the package, if that malloc.c is preferred over the system malloc.
3305 Otherwise the value is null. This variable is intended for generating
3308 malloctype (mallocsrc.U):
3309 This variable contains the kind of ptr returned by malloc and realloc.
3311 man1dir (man1dir.U):
3312 This variable contains the name of the directory in which manual
3313 source pages are to be put. It is the responsibility of the
3314 Makefile.SH to get the value of this into the proper command.
3315 You must be prepared to do the ~name expansion yourself.
3317 man1direxp (man1dir.U):
3318 This variable is the same as the man1dir variable, but is filename
3319 expanded at configuration time, for convenient use in makefiles.
3321 man1ext (man1dir.U):
3322 This variable contains the extension that the manual page should
3323 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3326 man3dir (man3dir.U):
3327 This variable contains the name of the directory in which manual
3328 source pages are to be put. It is the responsibility of the
3329 Makefile.SH to get the value of this into the proper command.
3330 You must be prepared to do the ~name expansion yourself.
3332 man3direxp (man3dir.U):
3333 This variable is the same as the man3dir variable, but is filename
3334 expanded at configuration time, for convenient use in makefiles.
3336 man3ext (man3dir.U):
3337 This variable contains the extension that the manual page should
3338 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3342 This variable is used internally by Configure to determine the
3343 full pathname (if any) of the Mcc program. After Configure runs,
3344 the value is reset to a plain "Mcc" and is not useful.
3346 mips_type (usrinc.U):
3347 This variable holds the environment type for the mips system.
3348 Possible values are "BSD 4.3" and "System V".
3351 This variable is used internally by Configure to determine the
3352 full pathname (if any) of the mkdir program. After Configure runs,
3353 the value is reset to a plain "mkdir" and is not useful.
3355 mmaptype (d_mmap.U):
3356 This symbol contains the type of pointer returned by mmap()
3357 (and simultaneously the type of the first argument).
3358 It can be 'void *' or 'caddr_t'.
3360 modetype (modetype.U):
3361 This variable defines modetype to be something like mode_t,
3362 int, unsigned short, or whatever type is used to declare file
3363 modes for system calls.
3366 This variable is used internally by Configure to determine the
3367 full pathname (if any) of the more program. After Configure runs,
3368 the value is reset to a plain "more" and is not useful.
3370 multiarch (multiarch.U):
3371 This variable conditionally defines the MULTIARCH symbol
3372 which signifies the presence of multiplatform files.
3373 This is normally set by hints files.
3376 This variable is defined but not used by Configure.
3377 The value is a plain '' and is not useful.
3379 myarchname (archname.U):
3380 This variable holds the architecture name computed by Configure in
3381 a previous run. It is not intended to be perused by any user and
3382 should never be set in a hint file.
3384 mydomain (myhostname.U):
3385 This variable contains the eventual value of the MYDOMAIN symbol,
3386 which is the domain of the host the program is going to run on.
3387 The domain must be appended to myhostname to form a complete host name.
3388 The dot comes with mydomain, and need not be supplied by the program.
3390 myhostname (myhostname.U):
3391 This variable contains the eventual value of the MYHOSTNAME symbol,
3392 which is the name of the host the program is going to run on.
3393 The domain is not kept with hostname, but must be gotten from mydomain.
3394 The dot comes with mydomain, and need not be supplied by the program.
3396 myuname (Oldconfig.U):
3397 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3398 pseudo variables assignments in the output are stripped, thank you. The
3399 whole thing is then lower-cased.
3402 This variable contains the '-n' flag if that is what causes the echo
3403 command to suppress newline. Otherwise it is null. Correct usage is
3404 $echo $n "prompt for a question: $c".
3406 need_va_copy (need_va_copy.U):
3407 This symbol, if defined, indicates that the system stores
3408 the variable argument list datatype, va_list, in a format
3409 that cannot be copied by simple assignment, so that some
3410 other means must be used when copying is required.
3411 As such systems vary in their provision (or non-provision)
3412 of copying mechanisms, handy.h defines a platform-
3413 independent macro, Perl_va_copy(src, dst), to do the job.
3415 netdb_hlen_type (netdbtype.U):
3416 This variable holds the type used for the 2nd argument to
3417 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3418 This is only useful if you have gethostbyaddr(), naturally.
3420 netdb_host_type (netdbtype.U):
3421 This variable holds the type used for the 1st argument to
3422 gethostbyaddr(). Usually, this is char * or void *, possibly
3423 with or without a const prefix.
3424 This is only useful if you have gethostbyaddr(), naturally.
3426 netdb_name_type (netdbtype.U):
3427 This variable holds the type used for the argument to
3428 gethostbyname(). Usually, this is char * or const char *.
3429 This is only useful if you have gethostbyname(), naturally.
3431 netdb_net_type (netdbtype.U):
3432 This variable holds the type used for the 1st argument to
3433 getnetbyaddr(). Usually, this is int or long.
3434 This is only useful if you have getnetbyaddr(), naturally.
3437 This variable is used internally by Configure to determine the
3438 full pathname (if any) of the nm program. After Configure runs,
3439 the value is reset to a plain "nm" and is not useful.
3442 This variable holds the options that may be necessary for nm.
3444 nm_so_opt (usenm.U):
3445 This variable holds the options that may be necessary for nm
3446 to work on a shared library but that can not be used on an
3447 archive library. Currently, this is only used by Linux, where
3448 nm --dynamic is *required* to get symbols from an ELF library which
3449 has been stripped, but nm --dynamic is *fatal* on an archive library.
3450 Maybe Linux should just always set usenm=false.
3452 nonxs_ext (Extensions.U):
3453 This variable holds a list of all non-xs extensions included
3454 in the package. All of them will be built.
3457 This variable is used internally by Configure to determine the
3458 full pathname (if any) of the nroff program. After Configure runs,
3459 the value is reset to a plain "nroff" and is not useful.
3461 nv_preserves_uv_bits (perlxv.U):
3462 This variable indicates how many of bits type uvtype
3463 a variable nvtype can preserve.
3465 nveformat (perlxvf.U):
3466 This variable contains the format string used for printing
3467 a Perl NV using %e-ish floating point format.
3469 nvEUformat (perlxvf.U):
3470 This variable contains the format string used for printing
3471 a Perl NV using %E-ish floating point format.
3473 nvfformat (perlxvf.U):
3474 This variable confains the format string used for printing
3475 a Perl NV using %f-ish floating point format.
3477 nvFUformat (perlxvf.U):
3478 This variable confains the format string used for printing
3479 a Perl NV using %F-ish floating point format.
3481 nvgformat (perlxvf.U):
3482 This variable contains the format string used for printing
3483 a Perl NV using %g-ish floating point format.
3485 nvGUformat (perlxvf.U):
3486 This variable contains the format string used for printing
3487 a Perl NV using %G-ish floating point format.
3490 This variable is the size of an NV in bytes.
3493 This variable contains the C type used for Perl's NV.
3495 o_nonblock (nblock_io.U):
3496 This variable bears the symbol value to be used during open() or fcntl()
3497 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3498 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3499 but that is only supported by some devices.
3502 This is an old synonym for _o.
3504 old_pthread_create_joinable (d_pthrattrj.U):
3505 This variable defines the constant to use for creating joinable
3506 (aka undetached) pthreads. Unused if pthread.h defines
3507 PTHREAD_CREATE_JOINABLE. If used, possible values are
3508 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3510 optimize (ccflags.U):
3511 This variable contains any optimizer/debugger flag that should be used.
3512 It is up to the Makefile to use it.
3514 orderlib (orderlib.U):
3515 This variable is "true" if the components of libraries must be ordered
3516 (with `lorder $* | tsort`) before placing them in an archive. Set to
3517 "false" if ranlib or ar can generate random libraries.
3519 osname (Oldconfig.U):
3520 This variable contains the operating system name (e.g. sunos,
3521 solaris, hpux, etc.). It can be useful later on for setting
3522 defaults. Any spaces are replaced with underscores. It is set
3523 to a null string if we can't figure it out.
3525 osvers (Oldconfig.U):
3526 This variable contains the operating system version (e.g.
3527 4.1.3, 5.2, etc.). It is primarily used for helping select
3528 an appropriate hints file, but might be useful elsewhere for
3529 setting defaults. It is set to '' if we can't figure it out.
3530 We try to be flexible about how much of the version number
3531 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3532 same for this package, hints files might just be os_4.0 or
3533 os_4.1, etc., not keeping separate files for each little release.
3535 otherlibdirs (otherlibdirs.U):
3536 This variable contains a colon-separated set of paths for the perl
3537 binary to search for additional library files or modules.
3538 These directories will be tacked to the end of @INC.
3539 Perl will automatically search below each path for version-
3540 and architecture-specific directories. See inc_version_list
3542 A value of ' ' means 'none' and is used to preserve this value
3543 for the next run through Configure.
3545 package (package.U):
3546 This variable contains the name of the package being constructed.
3547 It is primarily intended for the use of later Configure units.
3550 This variable contains the name of the preferred pager on the system.
3551 Usual values are (the full pathnames of) more, less, pg, or cat.
3554 This variable contains a command that produces the text of the
3555 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3556 "ypcat passwd" when NIS is used.
3557 On some systems, such as os390, there may be no equivalent
3558 command, in which case this variable is unset.
3560 patchlevel (patchlevel.U):
3561 The patchlevel level of this package.
3562 The value of patchlevel comes from the patchlevel.h file.
3563 In a version number such as 5.6.1, this is the "6".
3564 In patchlevel.h, this is referred to as "PERL_VERSION".
3567 This is an old synonym for p_ in Head.U, the character
3568 used to separate elements in the command shell search PATH.
3571 This variable contains the full path (if any) to a previously
3572 installed perl5.005 or later suitable for running the script
3573 to determine inc_version_list.
3576 This variable is defined but not used by Configure.
3577 The value is a plain '' and is not useful.
3579 perl_patchlevel (patchlevel.U):
3580 This is the Perl patch level, a numeric change identifier,
3581 as defined by whichever source code maintenance system
3582 is used to maintain the patches; currently Perforce.
3583 It does not correlate with the Perl version numbers or
3584 the maintenance versus development dichotomy except
3585 by also being increasing.
3587 PERL_REVISION (Oldsyms.U):
3588 In a Perl version number such as 5.6.2, this is the 5.
3589 This value is manually set in patchlevel.h
3591 PERL_SUBVERSION (Oldsyms.U):
3592 In a Perl version number such as 5.6.2, this is the 2.
3593 Values greater than 50 represent potentially unstable
3594 development subversions.
3595 This value is manually set in patchlevel.h
3597 PERL_VERSION (Oldsyms.U):
3598 In a Perl version number such as 5.6.2, this is the 6.
3599 This value is manually set in patchlevel.h
3601 perladmin (perladmin.U):
3602 Electronic mail address of the perl5 administrator.
3605 The list of libraries needed by Perl only (any libraries needed
3606 by extensions only will by dropped, if using dynamic loading).
3608 perlpath (perlpath.U):
3609 This variable contains the eventual value of the PERLPATH symbol,
3610 which contains the name of the perl interpreter to be used in
3611 shell scripts and in the "eval 'exec'" idiom. This variable is
3612 not necessarily the pathname of the file containing the perl
3613 interpreter; you must append the executable extension (_exe) if
3614 it is not already present. Note that Perl code that runs during
3615 the Perl build process cannot reference this variable, as Perl
3616 may not have been installed, or even if installed, may be a
3617 different version of Perl.
3620 This variable is used internally by Configure to determine the
3621 full pathname (if any) of the pg program. After Configure runs,
3622 the value is reset to a plain "pg" and is not useful.
3624 phostname (myhostname.U):
3625 This variable contains the eventual value of the PHOSTNAME symbol,
3626 which is a command that can be fed to popen() to get the host name.
3627 The program should probably not presume that the domain is or isn't
3630 pidtype (pidtype.U):
3631 This variable defines PIDTYPE to be something like pid_t, int,
3632 ushort, or whatever type is used to declare process ids in the kernel.
3635 Holds the private path used by Configure to find out the libraries.
3636 Its value is prepend to libpth. This variable takes care of special
3637 machines, like the mips. Usually, it should be empty.
3639 pm_apiversion (xs_apiversion.U):
3640 This variable contains the version of the oldest perl
3641 compatible with the present perl. (That is, pure perl modules
3642 written for $pm_apiversion will still work for the current
3643 version). perl.c:incpush() and lib/lib.pm will automatically
3644 search in $sitelib for older directories across major versions
3645 back to pm_apiversion. This is only useful if you have a perl
3646 library directory tree structured like the default one. The
3647 versioned site_perl library was introduced in 5.005, so that's
3648 the default setting for this variable. It's hard to imagine
3649 it changing before Perl6. It is included here for symmetry
3650 with xs_apiveprsion -- the searching algorithms will
3651 (presumably) be similar.
3652 See the INSTALL file for how this works.
3655 This variable is defined but not used by Configure.
3656 The value is a plain '' and is not useful.
3659 This variable is defined but not used by Configure.
3660 The value is a plain '' and is not useful.
3663 This variable holds the name of the directory below which the
3664 user will install the package. Usually, this is /usr/local, and
3665 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3666 man pages in /usr/local/man, etc. It is only used to set defaults
3667 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3669 prefixexp (prefix.U):
3670 This variable holds the full absolute path of the directory below
3671 which the user will install the package. Derived from prefix.
3673 privlib (privlib.U):
3674 This variable contains the eventual value of the PRIVLIB symbol,
3675 which is the name of the private library for this package. It may
3676 have a ~ on the front. It is up to the makefile to eventually create
3677 this directory while performing installation (with ~ substitution).
3679 privlibexp (privlib.U):
3680 This variable is the ~name expanded version of privlib, so that you
3681 may use it directly in Makefiles or shell scripts.
3683 procselfexe (d_procselfexe.U):
3684 If d_procselfexe is defined, $procselfexe is the filename
3685 of the symbolic link pointing to the absolute pathname of
3686 the executing program.
3688 prototype (prototype.U):
3689 This variable holds the eventual value of CAN_PROTOTYPE, which
3690 indicates the C compiler can handle funciton prototypes.
3692 ptrsize (ptrsize.U):
3693 This variable contains the value of the PTRSIZE symbol, which
3694 indicates to the C program how many bytes there are in a pointer.
3696 quadkind (quadtype.U):
3697 This variable, if defined, encodes the type of a quad:
3698 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3700 quadtype (quadtype.U):
3701 This variable defines Quad_t to be something like long, int,
3702 long long, int64_t, or whatever type is used for 64-bit integers.
3704 randbits (randfunc.U):
3705 Indicates how many bits are produced by the function used to
3706 generate normalized random numbers.
3708 randfunc (randfunc.U):
3709 Indicates the name of the random number function to use.
3710 Values include drand48, random, and rand. In C programs,
3711 the 'Drand01' macro is defined to generate uniformly distributed
3712 random numbers over the range [0., 1.[ (see drand01 and nrand).
3714 random_r_proto (d_random_r.U):
3715 This variable encodes the prototype of random_r.
3716 It is zero if d_random_r is undef, and one of the
3717 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
3720 randseedtype (randfunc.U):
3721 Indicates the type of the argument of the seedfunc.
3723 ranlib (orderlib.U):
3724 This variable is set to the pathname of the ranlib program, if it is
3725 needed to generate random libraries. Set to ":" if ar can generate
3726 random libraries or if random libraries are not supported
3728 rd_nodata (nblock_io.U):
3729 This variable holds the return code from read() when no data is
3730 present. It should be -1, but some systems return 0 when O_NDELAY is
3731 used, which is a shame because you cannot make the difference between
3732 no data and an EOF.. Sigh!
3734 readdir64_r_proto (d_readdir64_r.U):
3735 This variable encodes the prototype of readdir64_r.
3736 It is zero if d_readdir64_r is undef, and one of the
3737 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
3740 readdir_r_proto (d_readdir_r.U):
3741 This variable encodes the prototype of readdir_r.
3742 It is zero if d_readdir_r is undef, and one of the
3743 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
3746 revision (patchlevel.U):
3747 The value of revision comes from the patchlevel.h file.
3748 In a version number such as 5.6.1, this is the "5".
3749 In patchlevel.h, this is referred to as "PERL_REVISION".
3752 This variable is used internally by Configure to determine the
3753 full pathname (if any) of the rm program. After Configure runs,
3754 the value is reset to a plain "rm" and is not useful.
3757 This variable is defined but not used by Configure.
3758 The value is a plain '' and is not useful.
3761 This variable contains the command used by Configure
3762 to copy and execute a cross-compiled executable in the
3763 target host. Useful and available only during Perl build.
3764 Empty string '' if not cross-compiling.
3767 This variable contains 'true' or 'false' depending whether the
3768 nm extraction should be performed or not, according to the value
3769 of usenm and the flags on the Configure command line.
3771 sched_yield (d_pthread_y.U):
3772 This variable defines the way to yield the execution
3773 of the current thread.
3775 scriptdir (scriptdir.U):
3776 This variable holds the name of the directory in which the user wants
3777 to put publicly scripts for the package in question. It is either
3778 the same directory as for binaries, or a special one that can be
3779 mounted across different architectures, like /usr/share. Programs
3780 must be prepared to deal with ~name expansion.
3782 scriptdirexp (scriptdir.U):
3783 This variable is the same as scriptdir, but is filename expanded
3784 at configuration time, for programs not wanting to bother with it.
3787 This variable is used internally by Configure to determine the
3788 full pathname (if any) of the sed program. After Configure runs,
3789 the value is reset to a plain "sed" and is not useful.
3791 seedfunc (randfunc.U):
3792 Indicates the random number generating seed function.
3793 Values include srand48, srandom, and srand.
3795 selectminbits (selectminbits.U):
3796 This variable holds the minimum number of bits operated by select.
3797 That is, if you do select(n, ...), how many bits at least will be
3798 cleared in the masks if some activity is detected. Usually this
3799 is either n or 32*ceil(n/32), especially many little-endians do
3800 the latter. This is only useful if you have select(), naturally.
3802 selecttype (selecttype.U):
3803 This variable holds the type used for the 2nd, 3rd, and 4th
3804 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3805 is defined, and 'int *' otherwise. This is only useful if you
3806 have select(), naturally.
3809 This variable is defined but not used by Configure.
3810 The value is a plain '' and is not useful.
3812 setgrent_r_proto (d_setgrent_r.U):
3813 This variable encodes the prototype of setgrent_r.
3814 It is zero if d_setgrent_r is undef, and one of the
3815 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
3818 sethostent_r_proto (d_sethostent_r.U):
3819 This variable encodes the prototype of sethostent_r.
3820 It is zero if d_sethostent_r is undef, and one of the
3821 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
3824 setlocale_r_proto (d_setlocale_r.U):
3825 This variable encodes the prototype of setlocale_r.
3826 It is zero if d_setlocale_r is undef, and one of the
3827 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
3830 setnetent_r_proto (d_setnetent_r.U):
3831 This variable encodes the prototype of setnetent_r.
3832 It is zero if d_setnetent_r is undef, and one of the
3833 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
3836 setprotoent_r_proto (d_setprotoent_r.U):
3837 This variable encodes the prototype of setprotoent_r.
3838 It is zero if d_setprotoent_r is undef, and one of the
3839 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
3842 setpwent_r_proto (d_setpwent_r.U):
3843 This variable encodes the prototype of setpwent_r.
3844 It is zero if d_setpwent_r is undef, and one of the
3845 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
3848 setservent_r_proto (d_setservent_r.U):
3849 This variable encodes the prototype of setservent_r.
3850 It is zero if d_setservent_r is undef, and one of the
3851 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
3855 This variable contains the full pathname of the shell used
3856 on this system to execute Bourne shell scripts. Usually, this will be
3857 /bin/sh, though it's possible that some systems will have /bin/ksh,
3858 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3860 This unit comes before Options.U, so you can't set sh with a '-D'
3861 option, though you can override this (and startsh)
3862 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3865 This variable is defined but not used by Configure.
3866 The value is a plain '' and is not useful.
3868 sharpbang (spitshell.U):
3869 This variable contains the string #! if this system supports that
3872 shmattype (d_shmat.U):
3873 This symbol contains the type of pointer returned by shmat().
3874 It can be 'void *' or 'char *'.
3876 shortsize (intsize.U):
3877 This variable contains the value of the SHORTSIZE symbol which
3878 indicates to the C program how many bytes there are in a short.
3880 shrpenv (libperl.U):
3881 If the user builds a shared libperl.so, then we need to tell the
3882 'perl' executable where it will be able to find the installed libperl.so.
3883 One way to do this on some systems is to set the environment variable
3884 LD_RUN_PATH to the directory that will be the final location of the
3885 shared libperl.so. The makefile can use this with something like
3886 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3888 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3891 See the main perl Makefile.SH for actual working usage.
3892 Alternatively, we might be able to use a command line option such
3893 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
3894 $archlibexp/CORE (Linux).
3896 shsharp (spitshell.U):
3897 This variable tells further Configure units whether your sh can
3900 sig_count (sig_name.U):
3901 This variable holds a number larger than the largest valid
3902 signal number. This is usually the same as the NSIG macro.
3904 sig_name (sig_name.U):
3905 This variable holds the signal names, space separated. The leading
3906 SIG in signal name is removed. A ZERO is prepended to the
3907 list. This is currently not used.
3909 sig_name_init (sig_name.U):
3910 This variable holds the signal names, enclosed in double quotes and
3911 separated by commas, suitable for use in the SIG_NAME definition
3912 below. A "ZERO" is prepended to the list, and the list is
3913 terminated with a plain 0. The leading SIG in signal names
3914 is removed. See sig_num.
3916 sig_num (sig_name.U):
3917 This variable holds the signal numbers, space separated. A ZERO is
3918 prepended to the list (corresponding to the fake SIGZERO), and
3919 the list is terminated with a 0. Those numbers correspond to
3920 the value of the signal listed in the same place within the
3923 sig_num_init (sig_name.U):
3924 This variable holds the signal numbers, enclosed in double quotes and
3925 separated by commas, suitable for use in the SIG_NUM definition
3926 below. A "ZERO" is prepended to the list, and the list is
3927 terminated with a plain 0.
3929 sig_size (sig_name.U):
3930 This variable contains the number of elements of the sig_name
3931 and sig_num arrays, excluding the final NULL entry.
3933 signal_t (d_voidsig.U):
3934 This variable holds the type of the signal handler (void or int).
3936 sitearch (sitearch.U):
3937 This variable contains the eventual value of the SITEARCH symbol,
3938 which is the name of the private library for this package. It may
3939 have a ~ on the front. It is up to the makefile to eventually create
3940 this directory while performing installation (with ~ substitution).
3941 The standard distribution will put nothing in this directory.
3942 After perl has been installed, users may install their own local
3943 architecture-dependent modules in this directory with
3944 MakeMaker Makefile.PL
3945 or equivalent. See INSTALL for details.
3947 sitearchexp (sitearch.U):
3948 This variable is the ~name expanded version of sitearch, so that you
3949 may use it directly in Makefiles or shell scripts.
3951 sitebin (sitebin.U):
3952 This variable holds the name of the directory in which the user wants
3953 to put add-on publicly executable files for the package in question. It
3954 is most often a local directory such as /usr/local/bin. Programs using
3955 this variable must be prepared to deal with ~name substitution.
3956 The standard distribution will put nothing in this directory.
3957 After perl has been installed, users may install their own local
3958 executables in this directory with
3959 MakeMaker Makefile.PL
3960 or equivalent. See INSTALL for details.
3962 sitebinexp (sitebin.U):
3963 This is the same as the sitebin variable, but is filename expanded at
3964 configuration time, for use in your makefiles.
3966 sitelib (sitelib.U):
3967 This variable contains the eventual value of the SITELIB symbol,
3968 which is the name of the private library for this package. It may
3969 have a ~ on the front. It is up to the makefile to eventually create
3970 this directory while performing installation (with ~ substitution).
3971 The standard distribution will put nothing in this directory.
3972 After perl has been installed, users may install their own local
3973 architecture-independent modules in this directory with
3974 MakeMaker Makefile.PL
3975 or equivalent. See INSTALL for details.
3977 sitelib_stem (sitelib.U):
3978 This variable is $sitelibexp with any trailing version-specific component
3979 removed. The elements in inc_version_list (inc_version_list.U) can
3980 be tacked onto this variable to generate a list of directories to search.
3982 sitelibexp (sitelib.U):
3983 This variable is the ~name expanded version of sitelib, so that you
3984 may use it directly in Makefiles or shell scripts.
3986 siteprefix (siteprefix.U):
3987 This variable holds the full absolute path of the directory below
3988 which the user will install add-on packages.
3989 See INSTALL for usage and examples.
3991 siteprefixexp (siteprefix.U):
3992 This variable holds the full absolute path of the directory below
3993 which the user will install add-on packages. Derived from siteprefix.
3995 sizesize (sizesize.U):
3996 This variable contains the size of a sizetype in bytes.
3998 sizetype (sizetype.U):
3999 This variable defines sizetype to be something like size_t,
4000 unsigned long, or whatever type is used to declare length
4001 parameters for string functions.
4004 This variable is defined but not used by Configure.
4005 The value is a plain '' and is not useful.
4008 This variable is defined but not used by Configure.
4009 The value is a plain '' and is not useful.
4012 This variable holds the extension used to identify shared libraries
4013 (also known as shared objects) on the system. Usually set to 'so'.
4015 sockethdr (d_socket.U):
4016 This variable has any cpp '-I' flags needed for socket support.
4018 socketlib (d_socket.U):
4019 This variable has the names of any libraries needed for socket support.
4021 socksizetype (socksizetype.U):
4022 This variable holds the type used for the size argument
4023 for various socket calls like accept. Usual values include
4024 socklen_t, size_t, and int.
4027 This variable is used internally by Configure to determine the
4028 full pathname (if any) of the sort program. After Configure runs,
4029 the value is reset to a plain "sort" and is not useful.
4031 spackage (package.U):
4032 This variable contains the name of the package being constructed,
4033 with the first letter uppercased, i.e. suitable for starting
4036 spitshell (spitshell.U):
4037 This variable contains the command necessary to spit out a runnable
4038 shell on this system. It is either cat or a grep '-v' for # comments.
4040 sPRId64 (quadfio.U):
4041 This variable, if defined, contains the string used by stdio to
4042 format 64-bit decimal numbers (format 'd') for output.
4044 sPRIeldbl (longdblfio.U):
4045 This variable, if defined, contains the string used by stdio to
4046 format long doubles (format 'e') for output.
4048 sPRIEUldbl (longdblfio.U):
4049 This variable, if defined, contains the string used by stdio to
4050 format long doubles (format 'E') for output.
4051 The 'U' in the name is to separate this from sPRIeldbl so that even
4052 case-blind systems can see the difference.
4054 sPRIfldbl (longdblfio.U):
4055 This variable, if defined, contains the string used by stdio to
4056 format long doubles (format 'f') for output.
4058 sPRIFUldbl (longdblfio.U):
4059 This variable, if defined, contains the string used by stdio to
4060 format long doubles (format 'F') for output.
4061 The 'U' in the name is to separate this from sPRIfldbl so that even
4062 case-blind systems can see the difference.
4064 sPRIgldbl (longdblfio.U):
4065 This variable, if defined, contains the string used by stdio to
4066 format long doubles (format 'g') for output.
4068 sPRIGUldbl (longdblfio.U):
4069 This variable, if defined, contains the string used by stdio to
4070 format long doubles (format 'G') for output.
4071 The 'U' in the name is to separate this from sPRIgldbl so that even
4072 case-blind systems can see the difference.
4074 sPRIi64 (quadfio.U):
4075 This variable, if defined, contains the string used by stdio to
4076 format 64-bit decimal numbers (format 'i') for output.
4078 sPRIo64 (quadfio.U):
4079 This variable, if defined, contains the string used by stdio to
4080 format 64-bit octal numbers (format 'o') for output.
4082 sPRIu64 (quadfio.U):
4083 This variable, if defined, contains the string used by stdio to
4084 format 64-bit unsigned decimal numbers (format 'u') for output.
4086 sPRIx64 (quadfio.U):
4087 This variable, if defined, contains the string used by stdio to
4088 format 64-bit hexadecimal numbers (format 'x') for output.
4090 sPRIXU64 (quadfio.U):
4091 This variable, if defined, contains the string used by stdio to
4092 format 64-bit hExADECimAl numbers (format 'X') for output.
4093 The 'U' in the name is to separate this from sPRIx64 so that even
4094 case-blind systems can see the difference.
4096 srand48_r_proto (d_srand48_r.U):
4097 This variable encodes the prototype of srand48_r.
4098 It is zero if d_srand48_r is undef, and one of the
4099 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4102 srandom_r_proto (d_srandom_r.U):
4103 This variable encodes the prototype of srandom_r.
4104 It is zero if d_srandom_r is undef, and one of the
4105 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4109 This variable holds the path to the package source. It is up to
4110 the Makefile to use this variable and set VPATH accordingly to
4111 find the sources remotely.
4113 sSCNfldbl (longdblfio.U):
4114 This variable, if defined, contains the string used by stdio to
4115 format long doubles (format 'f') for input.
4117 ssizetype (ssizetype.U):
4118 This variable defines ssizetype to be something like ssize_t,
4119 long or int. It is used by functions that return a count
4120 of bytes or an error condition. It must be a signed type.
4121 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4123 startperl (startperl.U):
4124 This variable contains the string to put on the front of a perl
4125 script to make sure (hopefully) that it runs with perl and not some
4126 shell. Of course, that leading line must be followed by the classical
4128 eval 'exec perl -S $0 ${1+"$@"}'
4129 if $running_under_some_shell;
4130 to guarantee perl startup should the shell execute the script. Note
4131 that this magic incatation is not understood by csh.
4133 startsh (startsh.U):
4134 This variable contains the string to put on the front of a shell
4135 script to make sure (hopefully) that it runs with sh and not some
4138 static_ext (Extensions.U):
4139 This variable holds a list of XS extension files we want to
4140 link statically into the package. It is used by Makefile.
4142 stdchar (stdchar.U):
4143 This variable conditionally defines STDCHAR to be the type of char
4144 used in stdio.h. It has the values "unsigned char" or "char".
4146 stdio_base (d_stdstdio.U):
4147 This variable defines how, given a FILE pointer, fp, to access the
4148 _base field (or equivalent) of stdio.h's FILE structure. This will
4149 be used to define the macro FILE_base(fp).
4151 stdio_bufsiz (d_stdstdio.U):
4152 This variable defines how, given a FILE pointer, fp, to determine
4153 the number of bytes store in the I/O buffer pointer to by the
4154 _base field (or equivalent) of stdio.h's FILE structure. This will
4155 be used to define the macro FILE_bufsiz(fp).
4157 stdio_cnt (d_stdstdio.U):
4158 This variable defines how, given a FILE pointer, fp, to access the
4159 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4160 be used to define the macro FILE_cnt(fp).
4162 stdio_filbuf (d_stdstdio.U):
4163 This variable defines how, given a FILE pointer, fp, to tell
4164 stdio to refill its internal buffers (?). This will
4165 be used to define the macro FILE_filbuf(fp).
4167 stdio_ptr (d_stdstdio.U):
4168 This variable defines how, given a FILE pointer, fp, to access the
4169 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4170 be used to define the macro FILE_ptr(fp).
4172 stdio_stream_array (stdio_streams.U):
4173 This variable tells the name of the array holding the stdio streams.
4174 Usual values include _iob, __iob, and __sF.
4176 strerror_r_proto (d_strerror_r.U):
4177 This variable encodes the prototype of strerror_r.
4178 It is zero if d_strerror_r is undef, and one of the
4179 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4182 strings (i_string.U):
4183 This variable holds the full path of the string header that will be
4184 used. Typically /usr/include/string.h or /usr/include/strings.h.
4187 This variable is defined but not used by Configure.
4188 The value is a plain '' and is not useful.
4190 subversion (patchlevel.U):
4191 The subversion level of this package.
4192 The value of subversion comes from the patchlevel.h file.
4193 In a version number such as 5.6.1, this is the "1".
4194 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4195 This is unique to perl.
4198 This variable holds the place where the manual is located on this
4199 system. It is not the place where the user wants to put his manual
4200 pages. Rather it is the place where Configure may look to find manual
4201 for unix commands (section 1 of the manual usually). See mansrc.
4204 This variable is defined but not used by Configure.
4205 The value is a plain '' and is not useful.
4208 This variable is defined but not used by Configure.
4209 The value is a plain '' and is not useful.
4211 targetarch (Cross.U):
4212 If cross-compiling, this variable contains the target architecture.
4213 If not, this will be empty.
4216 This variable is defined but not used by Configure.
4217 The value is a plain '' and is not useful.
4220 This variable is defined but not used by Configure.
4221 The value is a plain '' and is not useful.
4224 This variable is used internally by Configure to determine the
4225 full pathname (if any) of the test program. After Configure runs,
4226 the value is reset to a plain "test" and is not useful.
4228 timeincl (i_time.U):
4229 This variable holds the full path of the included time header(s).
4231 timetype (d_time.U):
4232 This variable holds the type returned by time(). It can be long,
4233 or time_t on BSD sites (in which case <sys/types.h> should be
4234 included). Anyway, the type Time_t should be used.
4236 tmpnam_r_proto (d_tmpnam_r.U):
4237 This variable encodes the prototype of tmpnam_r.
4238 It is zero if d_tmpnam_r is undef, and one of the
4239 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4243 This variable contains the command used by Configure
4244 to copy to from the target host. Useful and available
4245 only during Perl build.
4246 The string ':' if not cross-compiling.
4249 This variable is used internally by Configure to determine the
4250 full pathname (if any) of the touch program. After Configure runs,
4251 the value is reset to a plain "touch" and is not useful.
4254 This variable is used internally by Configure to determine the
4255 full pathname (if any) of the tr program. After Configure runs,
4256 the value is reset to a plain "tr" and is not useful.
4259 This variable contains the value to be passed to the tr(1)
4260 command to transliterate a newline. Typical values are
4261 '\012' and '\n'. This is needed for EBCDIC systems where
4262 newline is not necessarily '\012'.
4265 This variable is defined but not used by Configure.
4266 The value is a plain '' and is not useful.
4268 ttyname_r_proto (d_ttyname_r.U):
4269 This variable encodes the prototype of ttyname_r.
4270 It is zero if d_ttyname_r is undef, and one of the
4271 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4275 This variable is the size of an U16 in bytes.
4278 This variable contains the C type used for Perl's U16.
4281 This variable is the size of an U32 in bytes.
4284 This variable contains the C type used for Perl's U32.
4287 This variable is the size of an U64 in bytes.
4290 This variable contains the C type used for Perl's U64.
4293 This variable is the size of an U8 in bytes.
4296 This variable contains the C type used for Perl's U8.
4299 This variable contains the format string used for printing a Uid_t.
4301 uidsign (uidsign.U):
4302 This variable contains the signedness of a uidtype.
4303 1 for unsigned, -1 for signed.
4305 uidsize (uidsize.U):
4306 This variable contains the size of a uidtype in bytes.
4308 uidtype (uidtype.U):
4309 This variable defines Uid_t to be something like uid_t, int,
4310 ushort, or whatever type is used to declare user ids in the kernel.
4313 This variable is used internally by Configure to determine the
4314 full pathname (if any) of the uname program. After Configure runs,
4315 the value is reset to a plain "uname" and is not useful.
4318 This variable is used internally by Configure to determine the
4319 full pathname (if any) of the uniq program. After Configure runs,
4320 the value is reset to a plain "uniq" and is not useful.
4322 uquadtype (quadtype.U):
4323 This variable defines Uquad_t to be something like unsigned long,
4324 unsigned int, unsigned long long, uint64_t, or whatever type is
4325 used for 64-bit integers.
4327 use5005threads (usethreads.U):
4328 This variable conditionally defines the USE_5005THREADS symbol,
4329 and indicates that Perl should be built to use the 5.005-based
4330 threading implementation.
4332 use64bitall (use64bits.U):
4333 This variable conditionally defines the USE_64_BIT_ALL symbol,
4334 and indicates that 64-bit integer types should be used
4335 when available. The maximal possible
4336 64-bitness is employed: LP64 or ILP64, meaning that you will
4337 be able to use more than 2 gigabytes of memory. This mode is
4338 even more binary incompatible than USE_64_BIT_INT. You may not
4339 be able to run the resulting executable in a 32-bit CPU at all or
4340 you may need at least to reboot your OS to 64-bit mode.
4342 use64bitint (use64bits.U):
4343 This variable conditionally defines the USE_64_BIT_INT symbol,
4344 and indicates that 64-bit integer types should be used
4345 when available. The minimal possible 64-bitness
4346 is employed, just enough to get 64-bit integers into Perl.
4347 This may mean using for example "long longs", while your memory
4348 may still be limited to 2 gigabytes.
4350 usecrosscompile (Cross.U):
4351 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4352 and indicates that Perl has been cross-compiled.
4355 This variable indicates if the system supports dynamic
4356 loading of some sort. See also dlsrc and dlobj.
4358 useithreads (usethreads.U):
4359 This variable conditionally defines the USE_ITHREADS symbol,
4360 and indicates that Perl should be built to use the interpreter-based
4361 threading implementation.
4363 uselargefiles (uselfs.U):
4364 This variable conditionally defines the USE_LARGE_FILES symbol,
4365 and indicates that large file interfaces should be used when
4368 uselongdouble (uselongdbl.U):
4369 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4370 and indicates that long doubles should be used when available.
4372 usemorebits (usemorebits.U):
4373 This variable conditionally defines the USE_MORE_BITS symbol,
4374 and indicates that explicit 64-bit interfaces and long doubles
4375 should be used when available.
4377 usemultiplicity (usemultiplicity.U):
4378 This variable conditionally defines the MULTIPLICITY symbol,
4379 and indicates that Perl should be built to use multiplicity.
4381 usemymalloc (mallocsrc.U):
4382 This variable contains y if the malloc that comes with this package
4383 is desired over the system's version of malloc. People often include
4384 special versions of malloc for effiency, but such versions are often
4385 less portable. See also mallocsrc and mallocobj.
4386 If this is 'y', then -lmalloc is removed from $libs.
4389 This variable contains 'true' or 'false' depending whether the
4390 nm extraction is wanted or not.
4392 useopcode (Extensions.U):
4393 This variable holds either 'true' or 'false' to indicate
4394 whether the Opcode extension should be used. The sole
4395 use for this currently is to allow an easy mechanism
4396 for users to skip the Opcode extension from the Configure
4399 useperlio (useperlio.U):
4400 This variable conditionally defines the USE_PERLIO symbol,
4401 and indicates that the PerlIO abstraction should be
4404 useposix (Extensions.U):
4405 This variable holds either 'true' or 'false' to indicate
4406 whether the POSIX extension should be used. The sole
4407 use for this currently is to allow an easy mechanism
4408 for hints files to indicate that POSIX will not compile
4409 on a particular system.
4411 usereentrant (usethreads.U):
4412 This variable conditionally defines the USE_REENTRANT_API symbol,
4413 which indicates that the thread code may try to use the various
4414 _r versions of library functions. This is only potentially
4415 meaningful if usethreads is set and is very experimental, it is
4416 not even prompted for.
4419 This variable is set to true when the user agrees to use sfio.
4420 It is set to false when sfio is not available or when the user
4421 explicitely requests not to use sfio. It is here primarily so
4422 that command-line settings can override the auto-detection of
4423 d_sfio without running into a "WHOA THERE".
4425 useshrplib (libperl.U):
4426 This variable is set to 'yes' if the user wishes
4427 to build a shared libperl, and 'no' otherwise.
4429 usesocks (usesocks.U):
4430 This variable conditionally defines the USE_SOCKS symbol,
4431 and indicates that Perl should be built to use SOCKS.
4433 usethreads (usethreads.U):
4434 This variable conditionally defines the USE_THREADS symbol,
4435 and indicates that Perl should be built to use threads.
4437 usevendorprefix (vendorprefix.U):
4438 This variable tells whether the vendorprefix
4439 and consequently other vendor* paths are in use.
4441 usevfork (d_vfork.U):
4442 This variable is set to true when the user accepts to use vfork.
4443 It is set to false when no vfork is available or when the user
4444 explicitely requests not to use vfork.
4447 This variable holds the path of the include files, which is
4448 usually /usr/include. It is mainly used by other Configure units.
4451 This variable is defined but not used by Configure.
4452 The value is a plain '' and is not useful.
4454 uvoformat (perlxvf.U):
4455 This variable contains the format string used for printing
4456 a Perl UV as an unsigned octal integer.
4459 This variable is the size of a UV in bytes.
4462 This variable contains the C type used for Perl's UV.
4464 uvuformat (perlxvf.U):
4465 This variable contains the format string used for printing
4466 a Perl UV as an unsigned decimal integer.
4468 uvxformat (perlxvf.U):
4469 This variable contains the format string used for printing
4470 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4472 uvXUformat (perlxvf.U):
4473 This variable contains the format string used for printing
4474 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4476 vendorarch (vendorarch.U):
4477 This variable contains the value of the PERL_VENDORARCH symbol.
4478 It may have a ~ on the front.
4479 The standard distribution will put nothing in this directory.
4480 Vendors who distribute perl may wish to place their own
4481 architecture-dependent modules and extensions in this directory with
4482 MakeMaker Makefile.PL INSTALLDIRS=vendor
4483 or equivalent. See INSTALL for details.
4485 vendorarchexp (vendorarch.U):
4486 This variable is the ~name expanded version of vendorarch, so that you
4487 may use it directly in Makefiles or shell scripts.
4489 vendorbin (vendorbin.U):
4490 This variable contains the eventual value of the VENDORBIN symbol.
4491 It may have a ~ on the front.
4492 The standard distribution will put nothing in this directory.
4493 Vendors who distribute perl may wish to place additional
4494 binaries in this directory with
4495 MakeMaker Makefile.PL INSTALLDIRS=vendor
4496 or equivalent. See INSTALL for details.
4498 vendorbinexp (vendorbin.U):
4499 This variable is the ~name expanded version of vendorbin, so that you
4500 may use it directly in Makefiles or shell scripts.
4502 vendorlib (vendorlib.U):
4503 This variable contains the eventual value of the VENDORLIB symbol,
4504 which is the name of the private library for this package.
4505 The standard distribution will put nothing in this directory.
4506 Vendors who distribute perl may wish to place their own
4507 modules in this directory with
4508 MakeMaker Makefile.PL INSTALLDIRS=vendor
4509 or equivalent. See INSTALL for details.
4511 vendorlib_stem (vendorlib.U):
4512 This variable is $vendorlibexp with any trailing version-specific component
4513 removed. The elements in inc_version_list (inc_version_list.U) can
4514 be tacked onto this variable to generate a list of directories to search.
4516 vendorlibexp (vendorlib.U):
4517 This variable is the ~name expanded version of vendorlib, so that you
4518 may use it directly in Makefiles or shell scripts.
4520 vendorprefix (vendorprefix.U):
4521 This variable holds the full absolute path of the directory below
4522 which the vendor will install add-on packages.
4523 See INSTALL for usage and examples.
4525 vendorprefixexp (vendorprefix.U):
4526 This variable holds the full absolute path of the directory below
4527 which the vendor will install add-on packages. Derived from vendorprefix.
4529 version (patchlevel.U):
4530 The full version number of this package, such as 5.6.1 (or 5_6_1).
4531 This combines revision, patchlevel, and subversion to get the
4532 full version number, including any possible subversions.
4533 This is suitable for use as a directory name, and hence is
4534 filesystem dependent.
4536 version_patchlevel_string (patchlevel.U):
4537 This is a string combining version, subversion and
4538 perl_patchlevel (if perl_patchlevel is non-zero).
4539 It is typically something like
4540 'version 7 subversion 1' or
4541 'version 7 subversion 1 patchlevel 11224'
4542 It is computed here to avoid duplication of code in myconfig.SH
4545 versiononly (versiononly.U):
4546 If set, this symbol indicates that only the version-specific
4547 components of a perl installation should be installed.
4548 This may be useful for making a test installation of a new
4549 version without disturbing the existing installation.
4550 Setting versiononly is equivalent to setting installperl's -v option.
4551 In particular, the non-versioned scripts and programs such as
4552 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
4553 (see INSTALL for a more complete list). Nor are the man
4555 Usually, this is undef.
4558 This variable is defined but not used by Configure.
4559 The value is a plain '' and is not useful.
4561 voidflags (voidflags.U):
4562 This variable contains the eventual value of the VOIDFLAGS symbol,
4563 which indicates how much support of the void type is given by this
4564 compiler. See VOIDFLAGS for more info.
4567 This variable holds extra path (space-separated) used to find
4568 libraries on this platform, for example CPU-specific libraries
4569 (on multi-CPU platforms) may be listed here.
4571 xs_apiversion (xs_apiversion.U):
4572 This variable contains the version of the oldest perl binary
4573 compatible with the present perl. perl.c:incpush() and
4574 lib/lib.pm will automatically search in $sitearch for older
4575 directories across major versions back to xs_apiversion.
4576 This is only useful if you have a perl library directory tree
4577 structured like the default one.
4578 See INSTALL for how this works.
4579 The versioned site_perl directory was introduced in 5.005,
4580 so that is the lowest possible value.
4581 Since this can depend on compile time options
4582 it is set by Configure. Other non-default sources
4583 of potential incompatibility, such as multiplicity, threads,
4584 debugging, 64bits, sfio, etc., are not checked for currently,
4585 though in principle we could go snooping around in old
4589 This variable holds the name of the compiler compiler we
4590 want to use in the Makefile. It can be yacc, byacc, or bison -y.
4593 This variable contains any additional yacc flags desired by the
4594 user. It is up to the Makefile to use this.
4597 This variable is defined but not used by Configure.
4598 The value is a plain '' and is not useful.
4601 This variable is used internally by Configure to determine the
4602 full pathname (if any) of the zip program. After Configure runs,
4603 the value is reset to a plain "zip" and is not useful.