2 !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
3 This file is built by metaconfig.
5 This file contains a description of all the shell variables whose value is
6 determined by the Configure script. Variables intended for use in C
7 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
8 generates pod documentation for Config.pm from this file--please try to keep
9 the formatting regular.]
12 This variable defines the extension used for ordinary library files.
13 For unix, it is '.a'. The '.' is included. Other possible
14 values include '.lib'.
17 This variable defines the extension used for executable files.
18 DJGPP, Cygwin and OS/2 use '.exe'. Stratus VOS uses '.pm'.
19 On operating systems which do not require a specific extension
20 for executable files, this variable is empty.
23 This variable defines the extension used for object files.
24 For unix, it is '.o'. The '.' is included. Other possible
25 values include '.obj'.
28 This variable is set to 'true' if AFS (Andrew File System) is used
29 on the system, 'false' otherwise. It is possible to override this
30 with a hint value or command line option, but you'd better know
34 This variable is by default set to '/afs'. In the unlikely case
35 this is not the correct root, it is possible to override this with
36 a hint value or command line option. This will be used in subsequent
37 tests for AFSness in the Perl configure and test process.
39 alignbytes (alignbytes.U):
40 This variable holds the number of bytes required to align a
41 double-- or a long double when applicable. Usual values are
42 2, 4 and 8. The default is eight, for safety.
44 ansi2knr (ansi2knr.U):
45 This variable is set if the user needs to run ansi2knr.
46 Currently, this is not supported, so we just abort.
48 aphostname (d_gethname.U):
49 This variable contains the command which can be used to compute the
50 host name. The command is fully qualified by its absolute path, to make
51 it safe when used by a process with super-user privileges.
53 api_revision (patchlevel.U):
54 The three variables, api_revision, api_version, and
55 api_subversion, specify the version of the oldest perl binary
56 compatible with the present perl. In a full version string
57 such as '5.6.1', api_revision is the '5'.
58 Prior to 5.5.640, the format was a floating point number,
61 perl.c:incpush() and lib/lib.pm will automatically search in
62 $sitelib/.. for older directories back to the limit specified
63 by these api_ variables. This is only useful if you have a
64 perl library directory tree structured like the default one.
65 See INSTALL for how this works. The versioned site_perl
66 directory was introduced in 5.005, so that is the lowest
67 possible value. The version list appropriate for the current
68 system is determined in inc_version_list.U.
70 XXX To do: Since compatibility can depend on compile time
71 options (such as bincompat, longlong, etc.) it should
72 (perhaps) be set by Configure, but currently it isn't.
73 Currently, we read a hard-wired value from patchlevel.h.
74 Perhaps what we ought to do is take the hard-wired value from
75 patchlevel.h but then modify it if the current Configure
76 options warrant. patchlevel.h then would use an #ifdef guard.
78 api_subversion (patchlevel.U):
79 The three variables, api_revision, api_version, and
80 api_subversion, specify the version of the oldest perl binary
81 compatible with the present perl. In a full version string
82 such as '5.6.1', api_subversion is the '1'. See api_revision for
85 api_version (patchlevel.U):
86 The three variables, api_revision, api_version, and
87 api_subversion, specify the version of the oldest perl binary
88 compatible with the present perl. In a full version string
89 such as '5.6.1', api_version is the '6'. See api_revision for
90 full details. As a special case, 5.5.0 is rendered in the
91 old-style as 5.005. (In the 5.005_0x maintenance series,
92 this was the only versioned directory in $sitelib.)
94 api_versionstring (patchlevel.U):
95 This variable combines api_revision, api_version, and
96 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
97 for use as a directory name. This is filesystem dependent.
100 This variable is used internally by Configure to determine the
101 full pathname (if any) of the ar program. After Configure runs,
102 the value is reset to a plain "ar" and is not useful.
105 This variable holds the name of the directory in which the user wants
106 to put architecture-dependent public library files for $package.
107 It is most often a local directory such as /usr/local/lib.
108 Programs using this variable must be prepared to deal
109 with filename expansion.
111 archlibexp (archlib.U):
112 This variable is the same as the archlib variable, but is
113 filename expanded at configuration time, for convenient use.
115 archname64 (use64bits.U):
116 This variable is used for the 64-bitness part of $archname.
118 archname (archname.U):
119 This variable is a short name to characterize the current
120 architecture. It is used mainly to construct the default archlib.
123 This variable defines any additional objects that must be linked
124 in with the program on this architecture. On unix, it is usually
125 empty. It is typically used to include emulations of unix calls
126 or other facilities. For perl on OS/2, for example, this would
129 asctime_r_proto (d_asctime_r.U):
130 This variable encodes the prototype of asctime_r.
131 It is zero if d_asctime_r is undef, and one of the
132 REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
136 This variable is used internally by Configure to determine the
137 full pathname (if any) of the awk program. After Configure runs,
138 the value is reset to a plain "awk" and is not useful.
141 The base revision level of this package, from the .package file.
144 This variable is defined but not used by Configure.
145 The value is a plain '' and is not useful.
148 This variable holds the name of the directory in which the user wants
149 to put publicly executable images for the package in question. It
150 is most often a local directory such as /usr/local/bin. Programs using
151 this variable must be prepared to deal with ~name substitution.
154 This is the same as the bin variable, but is filename expanded at
155 configuration time, for use in your makefiles.
158 This variable is used internally by Configure to determine the
159 full pathname (if any) of the bison program. After Configure runs,
160 the value is reset to a plain "bison" and is not useful.
163 This variable is used internally by Configure to determine the
164 full pathname (if any) of the byacc program. After Configure runs,
165 the value is reset to a plain "byacc" and is not useful.
167 byteorder (byteorder.U):
168 This variable holds the byte order in a UV. In the following,
169 larger digits indicate more significance. The variable byteorder
170 is either 4321 on a big-endian machine, or 1234 on a little-endian,
171 or 87654321 on a Cray ... or 3412 with weird order !
174 This variable contains the \c string if that is what causes the echo
175 command to suppress newline. Otherwise it is null. Correct usage is
176 $echo $n "prompt for a question: $c".
178 castflags (d_castneg.U):
179 This variable contains a flag that precise difficulties the
180 compiler has casting odd floating values to unsigned long:
182 1 = couldn't cast < 0
183 2 = couldn't cast >= 0x80000000
184 4 = couldn't cast in argument expression list
187 This variable is used internally by Configure to determine the
188 full pathname (if any) of the cat program. After Configure runs,
189 the value is reset to a plain "cat" and is not useful.
192 This variable holds the name of a command to execute a C compiler which
193 can resolve multiple global references that happen to have the same
194 name. Usual values are 'cc' and 'gcc'.
195 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
197 cccdlflags (dlsrc.U):
198 This variable contains any special flags that might need to be
199 passed with 'cc -c' to compile modules to be used to create a shared
200 library that will be used for dynamic loading. For hpux, this
201 should be +z. It is up to the makefile to use it.
204 This variable contains any special flags that might need to be
205 passed to cc to link with a shared library for dynamic loading.
206 It is up to the makefile to use it. For sunos 4.1, it should
210 This variable contains any additional C compiler flags desired by
211 the user. It is up to the Makefile to use this.
213 ccflags_uselargefiles (uselfs.U):
214 This variable contains the compiler flags needed by large file builds
215 and added to ccflags by hints files.
218 This can set either by hints files or by Configure. If using
219 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
220 Some platforms, however, make good use of this by storing the
221 flavor of the C compiler being used here. For example if using
222 the Sun WorkShop suite, ccname will be 'workshop'.
224 ccsymbols (Cppsym.U):
225 The variable contains the symbols defined by the C compiler alone.
226 The symbols defined by cpp or by cc when it calls cpp are not in
227 this list, see cppsymbols and cppccsymbols.
228 The list is a space-separated list of symbol=value tokens.
230 ccversion (Checkcc.U):
231 This can set either by hints files or by Configure. If using
232 a (non-gcc) vendor cc, this variable may contain a version for
236 Login name of the person who ran the Configure script and answered the
237 questions. This is used to tag both config.sh and config_h.SH.
239 cf_email (cf_email.U):
240 Electronic mail address of the person who ran Configure. This can be
241 used by units that require the user's e-mail, like MailList.U.
244 Holds the output of the "date" command when the configuration file was
245 produced. This is used to tag both config.sh and config_h.SH.
247 charsize (charsize.U):
248 This variable contains the value of the CHARSIZE symbol, which
249 indicates to the C program how many bytes there are in a character.
252 This variable is defined but not used by Configure.
253 The value is a plain '' and is not useful.
256 This variable is used internally by Configure to determine the
257 full pathname (if any) of the chmod program. After Configure runs,
258 the value is reset to a plain "chmod" and is not useful.
261 This variable is defined but not used by Configure.
262 The value is a plain '' and is not useful.
264 clocktype (d_times.U):
265 This variable holds the type returned by times(). It can be long,
266 or clock_t on BSD sites (in which case <sys/types.h> should be
270 This variable is used internally by Configure to determine the
271 full pathname (if any) of the comm program. After Configure runs,
272 the value is reset to a plain "comm" and is not useful.
275 This variable is defined but not used by Configure.
276 The value is a plain '' and is not useful.
278 contains (contains.U):
279 This variable holds the command to do a grep with a proper return
280 status. On most sane systems it is simply "grep". On insane systems
281 it is a grep followed by a cat followed by a test. This variable
282 is primarily for the use of other Configure units.
285 This variable is used internally by Configure to determine the
286 full pathname (if any) of the cp program. After Configure runs,
287 the value is reset to a plain "cp" and is not useful.
290 This variable is defined but not used by Configure.
291 The value is a plain '' and is not useful.
294 This variable is used internally by Configure to determine the
295 full pathname (if any) of the cpp program. After Configure runs,
296 the value is reset to a plain "cpp" and is not useful.
298 cpp_stuff (cpp_stuff.U):
299 This variable contains an identification of the catenation mechanism
300 used by the C preprocessor.
302 cppccsymbols (Cppsym.U):
303 The variable contains the symbols defined by the C compiler
304 when it calls cpp. The symbols defined by the cc alone or cpp
305 alone are not in this list, see ccsymbols and cppsymbols.
306 The list is a space-separated list of symbol=value tokens.
308 cppflags (ccflags.U):
309 This variable holds the flags that will be passed to the C pre-
310 processor. It is up to the Makefile to use it.
312 cpplast (cppstdin.U):
313 This variable has the same functionality as cppminus, only it applies
314 to cpprun and not cppstdin.
316 cppminus (cppstdin.U):
317 This variable contains the second part of the string which will invoke
318 the C preprocessor on the standard input and produce to standard
319 output. This variable will have the value "-" if cppstdin needs
320 a minus to specify standard input, otherwise the value is "".
323 This variable contains the command which will invoke a C preprocessor
324 on standard input and put the output to stdout. It is guaranteed not
325 to be a wrapper and may be a null string if no preprocessor can be
326 made directly available. This preprocessor might be different from the
327 one used by the C compiler. Don't forget to append cpplast after the
328 preprocessor options.
330 cppstdin (cppstdin.U):
331 This variable contains the command which will invoke the C
332 preprocessor on standard input and put the output to stdout.
333 It is primarily used by other Configure units that ask about
334 preprocessor symbols.
336 cppsymbols (Cppsym.U):
337 The variable contains the symbols defined by the C preprocessor
338 alone. The symbols defined by cc or by cc when it calls cpp are
339 not in this list, see ccsymbols and cppccsymbols.
340 The list is a space-separated list of symbol=value tokens.
342 crypt_r_proto (d_crypt_r.U):
343 This variable encodes the prototype of crypt_r.
344 It is zero if d_crypt_r is undef, and one of the
345 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
348 cryptlib (d_crypt.U):
349 This variable holds -lcrypt or the path to a libcrypt.a archive if
350 the crypt() function is not defined in the standard C library. It is
351 up to the Makefile to use this.
354 This variable is used internally by Configure to determine the
355 full pathname (if any) of the csh program. After Configure runs,
356 the value is reset to a plain "csh" and is not useful.
358 ctermid_r_proto (d_ctermid_r.U):
359 This variable encodes the prototype of ctermid_r.
360 It is zero if d_ctermid_r is undef, and one of the
361 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
364 ctime_r_proto (d_ctime_r.U):
365 This variable encodes the prototype of ctime_r.
366 It is zero if d_ctime_r is undef, and one of the
367 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
370 d__fwalk (d__fwalk.U):
371 This variable conditionally defines HAS__FWALK if _fwalk() is
372 available to apply a function to all the file handles.
374 d_access (d_access.U):
375 This variable conditionally defines HAS_ACCESS if the access() system
376 call is available to check for access permissions using real IDs.
378 d_accessx (d_accessx.U):
379 This variable conditionally defines the HAS_ACCESSX symbol, which
380 indicates to the C program that the accessx() routine is available.
383 This variable conditionally defines the HAS_AINTL symbol, which
384 indicates to the C program that the aintl() routine is available.
385 If copysignl is also present we can emulate modfl.
388 This variable conditionally defines the HAS_ALARM symbol, which
389 indicates to the C program that the alarm() routine is available.
391 d_archlib (archlib.U):
392 This variable conditionally defines ARCHLIB to hold the pathname
393 of architecture-dependent library files for $package. If
394 $archlib is the same as $privlib, then this is set to undef.
396 d_asctime_r (d_asctime_r.U):
397 This variable conditionally defines the HAS_ASCTIME_R symbol,
398 which indicates to the C program that the asctime_r()
399 routine is available.
402 This variable conditionally defines the HAS_ATOLF symbol, which
403 indicates to the C program that the atolf() routine is available.
406 This variable conditionally defines the HAS_ATOLL symbol, which
407 indicates to the C program that the atoll() routine is available.
409 d_attribut (d_attribut.U):
410 This variable conditionally defines HASATTRIBUTE, which
411 indicates the C compiler can check for function attributes,
412 such as printf formats.
415 This variable conditionally defines the HAS_BCMP symbol if
416 the bcmp() routine is available to compare strings.
419 This variable conditionally defines the HAS_BCOPY symbol if
420 the bcopy() routine is available to copy strings.
423 This symbol conditionally defines the symbol BSD when running on a
426 d_bsdgetpgrp (d_getpgrp.U):
427 This variable conditionally defines USE_BSD_GETPGRP if
428 getpgrp needs one arguments whereas USG one needs none.
430 d_bsdsetpgrp (d_setpgrp.U):
431 This variable conditionally defines USE_BSD_SETPGRP if
432 setpgrp needs two arguments whereas USG one needs none.
433 See also d_setpgid for a POSIX interface.
436 This variable conditionally defines the HAS_BZERO symbol if
437 the bzero() routine is available to set memory to 0.
439 d_casti32 (d_casti32.U):
440 This variable conditionally defines CASTI32, which indicates
441 whether the C compiler can cast large floats to 32-bit ints.
443 d_castneg (d_castneg.U):
444 This variable conditionally defines CASTNEG, which indicates
445 wether the C compiler can cast negative float to unsigned.
447 d_charvspr (d_vprintf.U):
448 This variable conditionally defines CHARVSPRINTF if this system
449 has vsprintf returning type (char*). The trend seems to be to
450 declare it as "int vsprintf()".
453 This variable conditionally defines the HAS_CHOWN symbol, which
454 indicates to the C program that the chown() routine is available.
456 d_chroot (d_chroot.U):
457 This variable conditionally defines the HAS_CHROOT symbol, which
458 indicates to the C program that the chroot() routine is available.
460 d_chsize (d_chsize.U):
461 This variable conditionally defines the CHSIZE symbol, which
462 indicates to the C program that the chsize() routine is available
463 to truncate files. You might need a -lx to get this routine.
466 This variable conditionally defines the HAS_CLASS symbol, which
467 indicates to the C program that the class() routine is available.
469 d_closedir (d_closedir.U):
470 This variable conditionally defines HAS_CLOSEDIR if closedir() is
473 d_cmsghdr_s (d_cmsghdr_s.U):
474 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
475 which indicates that the struct cmsghdr is supported.
478 This variable conditionally defines the HASCONST symbol, which
479 indicates to the C program that this C compiler knows about the
482 d_copysignl (d_copysignl.U):
483 This variable conditionally defines the HAS_COPYSIGNL symbol, which
484 indicates to the C program that the copysignl() routine is available.
485 If aintl is also present we can emulate modfl.
488 This variable conditionally defines the CRYPT symbol, which
489 indicates to the C program that the crypt() routine is available
490 to encrypt passwords and the like.
492 d_crypt_r (d_crypt_r.U):
493 This variable conditionally defines the HAS_CRYPT_R symbol,
494 which indicates to the C program that the crypt_r()
495 routine is available.
498 This variable conditionally defines the CSH symbol, which
499 indicates to the C program that the C-shell exists.
501 d_ctermid_r (d_ctermid_r.U):
502 This variable conditionally defines the HAS_CTERMID_R symbol,
503 which indicates to the C program that the ctermid_r()
504 routine is available.
506 d_ctime_r (d_ctime_r.U):
507 This variable conditionally defines the HAS_CTIME_R symbol,
508 which indicates to the C program that the ctime_r()
509 routine is available.
511 d_cuserid (d_cuserid.U):
512 This variable conditionally defines the HAS_CUSERID symbol, which
513 indicates to the C program that the cuserid() routine is available
514 to get character login names.
516 d_dbl_dig (d_dbl_dig.U):
517 This variable conditionally defines d_dbl_dig if this system's
518 header files provide DBL_DIG, which is the number of significant
519 digits in a double precision number.
521 d_dbminitproto (d_dbminitproto.U):
522 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
523 which indicates to the C program that the system provides
524 a prototype for the dbminit() function. Otherwise, it is
525 up to the program to supply one.
527 d_difftime (d_difftime.U):
528 This variable conditionally defines the HAS_DIFFTIME symbol, which
529 indicates to the C program that the difftime() routine is available.
532 This variable conditionally defines the HAS_DIRFD constant,
533 which indicates to the C program that dirfd() is available
534 to return the file descriptor of a directory stream.
536 d_dirnamlen (i_dirent.U):
537 This variable conditionally defines DIRNAMLEN, which indicates
538 to the C program that the length of directory entry names is
539 provided by a d_namelen field.
541 d_dlerror (d_dlerror.U):
542 This variable conditionally defines the HAS_DLERROR symbol, which
543 indicates to the C program that the dlerror() routine is available.
545 d_dlopen (d_dlopen.U):
546 This variable conditionally defines the HAS_DLOPEN symbol, which
547 indicates to the C program that the dlopen() routine is available.
549 d_dlsymun (d_dlsymun.U):
550 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
551 indicates that we need to prepend an underscore to the symbol
552 name before calling dlsym().
554 d_dosuid (d_dosuid.U):
555 This variable conditionally defines the symbol DOSUID, which
556 tells the C program that it should insert setuid emulation code
557 on hosts which have setuid #! scripts disabled.
559 d_drand48_r (d_drand48_r.U):
560 This variable conditionally defines the HAS_DRAND48_R symbol,
561 which indicates to the C program that the drand48_r()
562 routine is available.
564 d_drand48proto (d_drand48proto.U):
565 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
566 which indicates to the C program that the system provides
567 a prototype for the drand48() function. Otherwise, it is
568 up to the program to supply one.
571 This variable conditionally defines HAS_DUP2 if dup2() is
572 available to duplicate file descriptors.
574 d_eaccess (d_eaccess.U):
575 This variable conditionally defines the HAS_EACCESS symbol, which
576 indicates to the C program that the eaccess() routine is available.
578 d_endgrent (d_endgrent.U):
579 This variable conditionally defines the HAS_ENDGRENT symbol, which
580 indicates to the C program that the endgrent() routine is available
581 for sequential access of the group database.
583 d_endgrent_r (d_endgrent_r.U):
584 This variable conditionally defines the HAS_ENDGRENT_R symbol,
585 which indicates to the C program that the endgrent_r()
586 routine is available.
588 d_endhent (d_endhent.U):
589 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
590 available to close whatever was being used for host queries.
592 d_endhostent_r (d_endhostent_r.U):
593 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
594 which indicates to the C program that the endhostent_r()
595 routine is available.
597 d_endnent (d_endnent.U):
598 This variable conditionally defines HAS_ENDNETENT if endnetent() is
599 available to close whatever was being used for network queries.
601 d_endnetent_r (d_endnetent_r.U):
602 This variable conditionally defines the HAS_ENDNETENT_R symbol,
603 which indicates to the C program that the endnetent_r()
604 routine is available.
606 d_endpent (d_endpent.U):
607 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
608 available to close whatever was being used for protocol queries.
610 d_endprotoent_r (d_endprotoent_r.U):
611 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
612 which indicates to the C program that the endprotoent_r()
613 routine is available.
615 d_endpwent (d_endpwent.U):
616 This variable conditionally defines the HAS_ENDPWENT symbol, which
617 indicates to the C program that the endpwent() routine is available
618 for sequential access of the passwd database.
620 d_endpwent_r (d_endpwent_r.U):
621 This variable conditionally defines the HAS_ENDPWENT_R symbol,
622 which indicates to the C program that the endpwent_r()
623 routine is available.
625 d_endsent (d_endsent.U):
626 This variable conditionally defines HAS_ENDSERVENT if endservent() is
627 available to close whatever was being used for service queries.
629 d_endservent_r (d_endservent_r.U):
630 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
631 which indicates to the C program that the endservent_r()
632 routine is available.
634 d_eofnblk (nblock_io.U):
635 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
636 when reading from a non-blocking I/O source.
639 This variable conditionally defines the symbols EUNICE and VAX, which
640 alerts the C program that it must deal with ideosyncracies of VMS.
642 d_faststdio (d_faststdio.U):
643 This variable conditionally defines the HAS_FAST_STDIO symbol,
644 which indicates to the C program that the "fast stdio" is available
645 to manipulate the stdio buffers directly.
647 d_fchdir (d_fchdir.U):
648 This variable conditionally defines the HAS_FCHDIR symbol, which
649 indicates to the C program that the fchdir() routine is available.
651 d_fchmod (d_fchmod.U):
652 This variable conditionally defines the HAS_FCHMOD symbol, which
653 indicates to the C program that the fchmod() routine is available
654 to change mode of opened files.
656 d_fchown (d_fchown.U):
657 This variable conditionally defines the HAS_FCHOWN symbol, which
658 indicates to the C program that the fchown() routine is available
659 to change ownership of opened files.
662 This variable conditionally defines the HAS_FCNTL symbol, and indicates
663 whether the fcntl() function exists
665 d_fcntl_can_lock (d_fcntl_can_lock.U):
666 This variable conditionally defines the FCNTL_CAN_LOCK symbol
667 and indicates whether file locking with fcntl() works.
669 d_fd_macros (d_fd_set.U):
670 This variable contains the eventual value of the HAS_FD_MACROS symbol,
671 which indicates if your C compiler knows about the macros which
672 manipulate an fd_set.
674 d_fd_set (d_fd_set.U):
675 This variable contains the eventual value of the HAS_FD_SET symbol,
676 which indicates if your C compiler knows about the fd_set typedef.
678 d_fds_bits (d_fd_set.U):
679 This variable contains the eventual value of the HAS_FDS_BITS symbol,
680 which indicates if your fd_set typedef contains the fds_bits member.
681 If you have an fd_set typedef, but the dweebs who installed it did
682 a half-fast job and neglected to provide the macros to manipulate
683 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
685 d_fgetpos (d_fgetpos.U):
686 This variable conditionally defines HAS_FGETPOS if fgetpos() is
687 available to get the file position indicator.
689 d_finite (d_finite.U):
690 This variable conditionally defines the HAS_FINITE symbol, which
691 indicates to the C program that the finite() routine is available.
693 d_finitel (d_finitel.U):
694 This variable conditionally defines the HAS_FINITEL symbol, which
695 indicates to the C program that the finitel() routine is available.
697 d_flexfnam (d_flexfnam.U):
698 This variable conditionally defines the FLEXFILENAMES symbol, which
699 indicates that the system supports filenames longer than 14 characters.
702 This variable conditionally defines HAS_FLOCK if flock() is
703 available to do file locking.
705 d_flockproto (d_flockproto.U):
706 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
707 which indicates to the C program that the system provides
708 a prototype for the flock() function. Otherwise, it is
709 up to the program to supply one.
712 This variable conditionally defines the HAS_FORK symbol, which
713 indicates to the C program that the fork() routine is available.
715 d_fp_class (d_fp_class.U):
716 This variable conditionally defines the HAS_FP_CLASS symbol, which
717 indicates to the C program that the fp_class() routine is available.
719 d_fpathconf (d_pathconf.U):
720 This variable conditionally defines the HAS_FPATHCONF symbol, which
721 indicates to the C program that the pathconf() routine is available
722 to determine file-system related limits and options associated
723 with a given open file descriptor.
725 d_fpclass (d_fpclass.U):
726 This variable conditionally defines the HAS_FPCLASS symbol, which
727 indicates to the C program that the fpclass() routine is available.
729 d_fpclassify (d_fpclassify.U):
730 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
731 indicates to the C program that the fpclassify() routine is available.
733 d_fpclassl (d_fpclassl.U):
734 This variable conditionally defines the HAS_FPCLASSL symbol, which
735 indicates to the C program that the fpclassl() routine is available.
737 d_fpos64_t (d_fpos64_t.U):
738 This symbol will be defined if the C compiler supports fpos64_t.
740 d_frexpl (d_frexpl.U):
741 This variable conditionally defines the HAS_FREXPL symbol, which
742 indicates to the C program that the frexpl() routine is available.
744 d_fs_data_s (d_fs_data_s.U):
745 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
746 which indicates that the struct fs_data is supported.
748 d_fseeko (d_fseeko.U):
749 This variable conditionally defines the HAS_FSEEKO symbol, which
750 indicates to the C program that the fseeko() routine is available.
752 d_fsetpos (d_fsetpos.U):
753 This variable conditionally defines HAS_FSETPOS if fsetpos() is
754 available to set the file position indicator.
756 d_fstatfs (d_fstatfs.U):
757 This variable conditionally defines the HAS_FSTATFS symbol, which
758 indicates to the C program that the fstatfs() routine is available.
760 d_fstatvfs (d_statvfs.U):
761 This variable conditionally defines the HAS_FSTATVFS symbol, which
762 indicates to the C program that the fstatvfs() routine is available.
765 This variable conditionally defines the HAS_FSYNC symbol, which
766 indicates to the C program that the fsync() routine is available.
768 d_ftello (d_ftello.U):
769 This variable conditionally defines the HAS_FTELLO symbol, which
770 indicates to the C program that the ftello() routine is available.
773 This variable conditionally defines the HAS_FTIME symbol, which indicates
774 that the ftime() routine exists. The ftime() routine is basically
775 a sub-second accuracy clock.
777 d_Gconvert (d_gconvert.U):
778 This variable holds what Gconvert is defined as to convert
779 floating point numbers into strings. By default, Configure
780 sets this macro to use the first of gconvert, gcvt, or sprintf
781 that pass sprintf-%g-like behaviour tests. If perl is using
782 long doubles, the macro uses the first of the following
783 functions that pass Configure's tests: qgcvt, sprintf (if
784 Configure knows how to make sprintf format long doubles--see
785 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
786 The gconvert_preference and gconvert_ld_preference variables
787 can be used to alter Configure's preferences, for doubles and
788 long doubles, respectively. If present, they contain a
789 space-separated list of one or more of the above function
790 names in the order they should be tried.
792 d_Gconvert may be set to override Configure with a platform-
793 specific function. If this function expects a double, a
794 different value may need to be set by the uselongdouble.cbu
795 call-back unit so that long doubles can be formatted without
798 d_getcwd (d_getcwd.U):
799 This variable conditionally defines the HAS_GETCWD symbol, which
800 indicates to the C program that the getcwd() routine is available
801 to get the current working directory.
803 d_getespwnam (d_getespwnam.U):
804 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
805 available to retrieve enchanced (shadow) password entries by name.
807 d_getfsstat (d_getfsstat.U):
808 This variable conditionally defines the HAS_GETFSSTAT symbol, which
809 indicates to the C program that the getfsstat() routine is available.
811 d_getgrent (d_getgrent.U):
812 This variable conditionally defines the HAS_GETGRENT symbol, which
813 indicates to the C program that the getgrent() routine is available
814 for sequential access of the group database.
816 d_getgrent_r (d_getgrent_r.U):
817 This variable conditionally defines the HAS_GETGRENT_R symbol,
818 which indicates to the C program that the getgrent_r()
819 routine is available.
821 d_getgrgid_r (d_getgrgid_r.U):
822 This variable conditionally defines the HAS_GETGRGID_R symbol,
823 which indicates to the C program that the getgrgid_r()
824 routine is available.
826 d_getgrnam_r (d_getgrnam_r.U):
827 This variable conditionally defines the HAS_GETGRNAM_R symbol,
828 which indicates to the C program that the getgrnam_r()
829 routine is available.
831 d_getgrps (d_getgrps.U):
832 This variable conditionally defines the HAS_GETGROUPS symbol, which
833 indicates to the C program that the getgroups() routine is available
834 to get the list of process groups.
836 d_gethbyaddr (d_gethbyad.U):
837 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
838 indicates to the C program that the gethostbyaddr() routine is available
839 to look up hosts by their IP addresses.
841 d_gethbyname (d_gethbynm.U):
842 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
843 indicates to the C program that the gethostbyname() routine is available
844 to look up host names in some data base or other.
846 d_gethent (d_gethent.U):
847 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
848 available to look up host names in some data base or another.
850 d_gethname (d_gethname.U):
851 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
852 indicates to the C program that the gethostname() routine may be
853 used to derive the host name.
855 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
856 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
857 which indicates to the C program that the gethostbyaddr_r()
858 routine is available.
860 d_gethostbyname_r (d_gethostbyname_r.U):
861 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
862 which indicates to the C program that the gethostbyname_r()
863 routine is available.
865 d_gethostent_r (d_gethostent_r.U):
866 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
867 which indicates to the C program that the gethostent_r()
868 routine is available.
870 d_gethostprotos (d_gethostprotos.U):
871 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
872 which indicates to the C program that <netdb.h> supplies
873 prototypes for the various gethost*() functions.
874 See also netdbtype.U for probing for various netdb types.
876 d_getitimer (d_getitimer.U):
877 This variable conditionally defines the HAS_GETITIMER symbol, which
878 indicates to the C program that the getitimer() routine is available.
880 d_getlogin (d_getlogin.U):
881 This variable conditionally defines the HAS_GETLOGIN symbol, which
882 indicates to the C program that the getlogin() routine is available
883 to get the login name.
885 d_getlogin_r (d_getlogin_r.U):
886 This variable conditionally defines the HAS_GETLOGIN_R symbol,
887 which indicates to the C program that the getlogin_r()
888 routine is available.
890 d_getmnt (d_getmnt.U):
891 This variable conditionally defines the HAS_GETMNT symbol, which
892 indicates to the C program that the getmnt() routine is available
893 to retrieve one or more mount info blocks by filename.
895 d_getmntent (d_getmntent.U):
896 This variable conditionally defines the HAS_GETMNTENT symbol, which
897 indicates to the C program that the getmntent() routine is available
898 to iterate through mounted files to get their mount info.
900 d_getnbyaddr (d_getnbyad.U):
901 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
902 indicates to the C program that the getnetbyaddr() routine is available
903 to look up networks by their IP addresses.
905 d_getnbyname (d_getnbynm.U):
906 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
907 indicates to the C program that the getnetbyname() routine is available
908 to look up networks by their names.
910 d_getnent (d_getnent.U):
911 This variable conditionally defines HAS_GETNETENT if getnetent() is
912 available to look up network names in some data base or another.
914 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
915 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
916 which indicates to the C program that the getnetbyaddr_r()
917 routine is available.
919 d_getnetbyname_r (d_getnetbyname_r.U):
920 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
921 which indicates to the C program that the getnetbyname_r()
922 routine is available.
924 d_getnetent_r (d_getnetent_r.U):
925 This variable conditionally defines the HAS_GETNETENT_R symbol,
926 which indicates to the C program that the getnetent_r()
927 routine is available.
929 d_getnetprotos (d_getnetprotos.U):
930 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
931 which indicates to the C program that <netdb.h> supplies
932 prototypes for the various getnet*() functions.
933 See also netdbtype.U for probing for various netdb types.
935 d_getpagsz (d_getpagsz.U):
936 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
937 is available to get the system page size.
939 d_getpbyname (d_getprotby.U):
940 This variable conditionally defines the HAS_GETPROTOBYNAME
941 symbol, which indicates to the C program that the
942 getprotobyname() routine is available to look up protocols
945 d_getpbynumber (d_getprotby.U):
946 This variable conditionally defines the HAS_GETPROTOBYNUMBER
947 symbol, which indicates to the C program that the
948 getprotobynumber() routine is available to look up protocols
951 d_getpent (d_getpent.U):
952 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
953 available to look up protocols in some data base or another.
955 d_getpgid (d_getpgid.U):
956 This variable conditionally defines the HAS_GETPGID symbol, which
957 indicates to the C program that the getpgid(pid) function
958 is available to get the process group id.
960 d_getpgrp2 (d_getpgrp2.U):
961 This variable conditionally defines the HAS_GETPGRP2 symbol, which
962 indicates to the C program that the getpgrp2() (as in DG/UX) routine
963 is available to get the current process group.
965 d_getpgrp (d_getpgrp.U):
966 This variable conditionally defines HAS_GETPGRP if getpgrp() is
967 available to get the current process group.
969 d_getppid (d_getppid.U):
970 This variable conditionally defines the HAS_GETPPID symbol, which
971 indicates to the C program that the getppid() routine is available
972 to get the parent process ID.
974 d_getprior (d_getprior.U):
975 This variable conditionally defines HAS_GETPRIORITY if getpriority()
976 is available to get a process's priority.
978 d_getprotobyname_r (d_getprotobyname_r.U):
979 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
980 which indicates to the C program that the getprotobyname_r()
981 routine is available.
983 d_getprotobynumber_r (d_getprotobynumber_r.U):
984 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
985 which indicates to the C program that the getprotobynumber_r()
986 routine is available.
988 d_getprotoent_r (d_getprotoent_r.U):
989 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
990 which indicates to the C program that the getprotoent_r()
991 routine is available.
993 d_getprotoprotos (d_getprotoprotos.U):
994 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
995 which indicates to the C program that <netdb.h> supplies
996 prototypes for the various getproto*() functions.
997 See also netdbtype.U for probing for various netdb types.
999 d_getprpwnam (d_getprpwnam.U):
1000 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1001 available to retrieve protected (shadow) password entries by name.
1003 d_getpwent (d_getpwent.U):
1004 This variable conditionally defines the HAS_GETPWENT symbol, which
1005 indicates to the C program that the getpwent() routine is available
1006 for sequential access of the passwd database.
1008 d_getpwent_r (d_getpwent_r.U):
1009 This variable conditionally defines the HAS_GETPWENT_R symbol,
1010 which indicates to the C program that the getpwent_r()
1011 routine is available.
1013 d_getpwnam_r (d_getpwnam_r.U):
1014 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1015 which indicates to the C program that the getpwnam_r()
1016 routine is available.
1018 d_getpwuid_r (d_getpwuid_r.U):
1019 This variable conditionally defines the HAS_GETPWUID_R symbol,
1020 which indicates to the C program that the getpwuid_r()
1021 routine is available.
1023 d_getsbyname (d_getsrvby.U):
1024 This variable conditionally defines the HAS_GETSERVBYNAME
1025 symbol, which indicates to the C program that the
1026 getservbyname() routine is available to look up services
1029 d_getsbyport (d_getsrvby.U):
1030 This variable conditionally defines the HAS_GETSERVBYPORT
1031 symbol, which indicates to the C program that the
1032 getservbyport() routine is available to look up services
1035 d_getsent (d_getsent.U):
1036 This variable conditionally defines HAS_GETSERVENT if getservent() is
1037 available to look up network services in some data base or another.
1039 d_getservbyname_r (d_getservbyname_r.U):
1040 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1041 which indicates to the C program that the getservbyname_r()
1042 routine is available.
1044 d_getservbyport_r (d_getservbyport_r.U):
1045 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1046 which indicates to the C program that the getservbyport_r()
1047 routine is available.
1049 d_getservent_r (d_getservent_r.U):
1050 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1051 which indicates to the C program that the getservent_r()
1052 routine is available.
1054 d_getservprotos (d_getservprotos.U):
1055 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1056 which indicates to the C program that <netdb.h> supplies
1057 prototypes for the various getserv*() functions.
1058 See also netdbtype.U for probing for various netdb types.
1060 d_getspnam (d_getspnam.U):
1061 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1062 available to retrieve SysV shadow password entries by name.
1064 d_getspnam_r (d_getspnam_r.U):
1065 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1066 which indicates to the C program that the getspnam_r()
1067 routine is available.
1069 d_gettimeod (d_ftime.U):
1070 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1071 indicates that the gettimeofday() system call exists (to obtain a
1072 sub-second accuracy clock). You should probably include <sys/resource.h>.
1074 d_gmtime_r (d_gmtime_r.U):
1075 This variable conditionally defines the HAS_GMTIME_R symbol,
1076 which indicates to the C program that the gmtime_r()
1077 routine is available.
1079 d_gnulibc (d_gnulibc.U):
1080 Defined if we're dealing with the GNU C Library.
1082 d_grpasswd (i_grp.U):
1083 This variable conditionally defines GRPASSWD, which indicates
1084 that struct group in <grp.h> contains gr_passwd.
1086 d_hasmntopt (d_hasmntopt.U):
1087 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1088 indicates to the C program that the hasmntopt() routine is available
1089 to query the mount options of file systems.
1091 d_htonl (d_htonl.U):
1092 This variable conditionally defines HAS_HTONL if htonl() and its
1093 friends are available to do network order byte swapping.
1095 d_ilogbl (d_ilogbl.U):
1096 This variable conditionally defines the HAS_ILOGBL symbol, which
1097 indicates to the C program that the ilogbl() routine is available.
1098 If scalbnl is also present we can emulate frexpl.
1100 d_index (d_strchr.U):
1101 This variable conditionally defines HAS_INDEX if index() and
1102 rindex() are available for string searching.
1104 d_inetaton (d_inetaton.U):
1105 This variable conditionally defines the HAS_INET_ATON symbol, which
1106 indicates to the C program that the inet_aton() function is available
1107 to parse IP address "dotted-quad" strings.
1109 d_int64_t (d_int64_t.U):
1110 This symbol will be defined if the C compiler supports int64_t.
1112 d_isascii (d_isascii.U):
1113 This variable conditionally defines the HAS_ISASCII constant,
1114 which indicates to the C program that isascii() is available.
1116 d_isfinite (d_isfinite.U):
1117 This variable conditionally defines the HAS_ISFINITE symbol, which
1118 indicates to the C program that the isfinite() routine is available.
1120 d_isinf (d_isinf.U):
1121 This variable conditionally defines the HAS_ISINF symbol, which
1122 indicates to the C program that the isinf() routine is available.
1124 d_isnan (d_isnan.U):
1125 This variable conditionally defines the HAS_ISNAN symbol, which
1126 indicates to the C program that the isnan() routine is available.
1128 d_isnanl (d_isnanl.U):
1129 This variable conditionally defines the HAS_ISNANL symbol, which
1130 indicates to the C program that the isnanl() routine is available.
1132 d_killpg (d_killpg.U):
1133 This variable conditionally defines the HAS_KILLPG symbol, which
1134 indicates to the C program that the killpg() routine is available
1135 to kill process groups.
1137 d_lchown (d_lchown.U):
1138 This variable conditionally defines the HAS_LCHOWN symbol, which
1139 indicates to the C program that the lchown() routine is available
1140 to operate on a symbolic link (instead of following the link).
1142 d_ldbl_dig (d_ldbl_dig.U):
1143 This variable conditionally defines d_ldbl_dig if this system's
1144 header files provide LDBL_DIG, which is the number of significant
1145 digits in a long double precision number.
1148 This variable conditionally defines HAS_LINK if link() is
1149 available to create hard links.
1151 d_localtime_r (d_localtime_r.U):
1152 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1153 which indicates to the C program that the localtime_r()
1154 routine is available.
1156 d_locconv (d_locconv.U):
1157 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1158 available for numeric and monetary formatting conventions.
1160 d_lockf (d_lockf.U):
1161 This variable conditionally defines HAS_LOCKF if lockf() is
1162 available to do file locking.
1164 d_longdbl (d_longdbl.U):
1165 This variable conditionally defines HAS_LONG_DOUBLE if
1166 the long double type is supported.
1168 d_longlong (d_longlong.U):
1169 This variable conditionally defines HAS_LONG_LONG if
1170 the long long type is supported.
1172 d_lseekproto (d_lseekproto.U):
1173 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1174 which indicates to the C program that the system provides
1175 a prototype for the lseek() function. Otherwise, it is
1176 up to the program to supply one.
1178 d_lstat (d_lstat.U):
1179 This variable conditionally defines HAS_LSTAT if lstat() is
1180 available to do file stats on symbolic links.
1182 d_madvise (d_madvise.U):
1183 This variable conditionally defines HAS_MADVISE if madvise() is
1184 available to map a file into memory.
1186 d_mblen (d_mblen.U):
1187 This variable conditionally defines the HAS_MBLEN symbol, which
1188 indicates to the C program that the mblen() routine is available
1189 to find the number of bytes in a multibye character.
1191 d_mbstowcs (d_mbstowcs.U):
1192 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1193 indicates to the C program that the mbstowcs() routine is available
1194 to convert a multibyte string into a wide character string.
1196 d_mbtowc (d_mbtowc.U):
1197 This variable conditionally defines the HAS_MBTOWC symbol, which
1198 indicates to the C program that the mbtowc() routine is available
1199 to convert multibyte to a wide character.
1201 d_memchr (d_memchr.U):
1202 This variable conditionally defines the HAS_MEMCHR symbol, which
1203 indicates to the C program that the memchr() routine is available
1204 to locate characters within a C string.
1206 d_memcmp (d_memcmp.U):
1207 This variable conditionally defines the HAS_MEMCMP symbol, which
1208 indicates to the C program that the memcmp() routine is available
1209 to compare blocks of memory.
1211 d_memcpy (d_memcpy.U):
1212 This variable conditionally defines the HAS_MEMCPY symbol, which
1213 indicates to the C program that the memcpy() routine is available
1214 to copy blocks of memory.
1216 d_memmove (d_memmove.U):
1217 This variable conditionally defines the HAS_MEMMOVE symbol, which
1218 indicates to the C program that the memmove() routine is available
1219 to copy potentatially overlapping blocks of memory.
1221 d_memset (d_memset.U):
1222 This variable conditionally defines the HAS_MEMSET symbol, which
1223 indicates to the C program that the memset() routine is available
1224 to set blocks of memory.
1226 d_mkdir (d_mkdir.U):
1227 This variable conditionally defines the HAS_MKDIR symbol, which
1228 indicates to the C program that the mkdir() routine is available
1229 to create directories..
1231 d_mkdtemp (d_mkdtemp.U):
1232 This variable conditionally defines the HAS_MKDTEMP symbol, which
1233 indicates to the C program that the mkdtemp() routine is available
1234 to exclusively create a uniquely named temporary directory.
1236 d_mkfifo (d_mkfifo.U):
1237 This variable conditionally defines the HAS_MKFIFO symbol, which
1238 indicates to the C program that the mkfifo() routine is available.
1240 d_mkstemp (d_mkstemp.U):
1241 This variable conditionally defines the HAS_MKSTEMP symbol, which
1242 indicates to the C program that the mkstemp() routine is available
1243 to exclusively create and open a uniquely named temporary file.
1245 d_mkstemps (d_mkstemps.U):
1246 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1247 indicates to the C program that the mkstemps() routine is available
1248 to exclusively create and open a uniquely named (with a suffix)
1251 d_mktime (d_mktime.U):
1252 This variable conditionally defines the HAS_MKTIME symbol, which
1253 indicates to the C program that the mktime() routine is available.
1256 This variable conditionally defines HAS_MMAP if mmap() is
1257 available to map a file into memory.
1259 d_modfl (d_modfl.U):
1260 This variable conditionally defines the HAS_MODFL symbol, which
1261 indicates to the C program that the modfl() routine is available.
1263 d_modfl_pow32_bug (d_modfl.U):
1264 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1265 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1266 For example from 4294967303.150000 one would get 4294967302.000000
1267 and 1.150000. The bug has been seen in certain versions of glibc,
1268 release 2.2.2 is known to be okay.
1270 d_modflproto (d_modfl.U):
1271 This symbol, if defined, indicates that the system provides
1272 a prototype for the modfl() function. Otherwise, it is up
1273 to the program to supply one. C99 says it should be
1274 long double modfl(long double, long double *);
1276 d_mprotect (d_mprotect.U):
1277 This variable conditionally defines HAS_MPROTECT if mprotect() is
1278 available to modify the access protection of a memory mapped file.
1281 This variable conditionally defines the HAS_MSG symbol, which
1282 indicates that the entire msg*(2) library is present.
1284 d_msg_ctrunc (d_socket.U):
1285 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1286 which indicates that the MSG_CTRUNC is available. #ifdef is
1287 not enough because it may be an enum, glibc has been known to do this.
1289 d_msg_dontroute (d_socket.U):
1290 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1291 which indicates that the MSG_DONTROUTE is available. #ifdef is
1292 not enough because it may be an enum, glibc has been known to do this.
1294 d_msg_oob (d_socket.U):
1295 This variable conditionally defines the HAS_MSG_OOB symbol,
1296 which indicates that the MSG_OOB is available. #ifdef is
1297 not enough because it may be an enum, glibc has been known to do this.
1299 d_msg_peek (d_socket.U):
1300 This variable conditionally defines the HAS_MSG_PEEK symbol,
1301 which indicates that the MSG_PEEK is available. #ifdef is
1302 not enough because it may be an enum, glibc has been known to do this.
1304 d_msg_proxy (d_socket.U):
1305 This variable conditionally defines the HAS_MSG_PROXY symbol,
1306 which indicates that the MSG_PROXY is available. #ifdef is
1307 not enough because it may be an enum, glibc has been known to do this.
1309 d_msgctl (d_msgctl.U):
1310 This variable conditionally defines the HAS_MSGCTL symbol, which
1311 indicates to the C program that the msgctl() routine is available.
1313 d_msgget (d_msgget.U):
1314 This variable conditionally defines the HAS_MSGGET symbol, which
1315 indicates to the C program that the msgget() routine is available.
1317 d_msghdr_s (d_msghdr_s.U):
1318 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1319 which indicates that the struct msghdr is supported.
1321 d_msgrcv (d_msgrcv.U):
1322 This variable conditionally defines the HAS_MSGRCV symbol, which
1323 indicates to the C program that the msgrcv() routine is available.
1325 d_msgsnd (d_msgsnd.U):
1326 This variable conditionally defines the HAS_MSGSND symbol, which
1327 indicates to the C program that the msgsnd() routine is available.
1329 d_msync (d_msync.U):
1330 This variable conditionally defines HAS_MSYNC if msync() is
1331 available to synchronize a mapped file.
1333 d_munmap (d_munmap.U):
1334 This variable conditionally defines HAS_MUNMAP if munmap() is
1335 available to unmap a region mapped by mmap().
1337 d_mymalloc (mallocsrc.U):
1338 This variable conditionally defines MYMALLOC in case other parts
1339 of the source want to take special action if MYMALLOC is used.
1340 This may include different sorts of profiling or error detection.
1342 d_nanosleep (d_nanosleep.U):
1343 This variable conditionally defines HAS_NANOSLEEP
1344 if nanosleep() is available to sleep with 1E-9 sec accuracy.
1347 This variable conditionally defines the HAS_NICE symbol, which
1348 indicates to the C program that the nice() routine is available.
1350 d_nl_langinfo (d_nl_langinfo.U):
1351 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1352 indicates to the C program that the nl_langinfo() routine is available.
1354 d_nv_preserves_uv (perlxv.U):
1355 This variable indicates whether a variable of type nvtype
1356 can preserve all the bits a variable of type uvtype.
1358 d_off64_t (d_off64_t.U):
1359 This symbol will be defined if the C compiler supports off64_t.
1361 d_old_pthread_create_joinable (d_pthrattrj.U):
1362 This variable conditionally defines pthread_create_joinable.
1363 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1365 d_oldpthreads (usethreads.U):
1366 This variable conditionally defines the OLD_PTHREADS_API symbol,
1367 and indicates that Perl should be built to use the old
1368 draft POSIX threads API. This is only potentially meaningful if
1371 d_oldsock (d_socket.U):
1372 This variable conditionally defines the OLDSOCKET symbol, which
1373 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1375 d_open3 (d_open3.U):
1376 This variable conditionally defines the HAS_OPEN3 manifest constant,
1377 which indicates to the C program that the 3 argument version of
1378 the open(2) function is available.
1380 d_pathconf (d_pathconf.U):
1381 This variable conditionally defines the HAS_PATHCONF symbol, which
1382 indicates to the C program that the pathconf() routine is available
1383 to determine file-system related limits and options associated
1384 with a given filename.
1386 d_pause (d_pause.U):
1387 This variable conditionally defines the HAS_PAUSE symbol, which
1388 indicates to the C program that the pause() routine is available
1389 to suspend a process until a signal is received.
1391 d_perl_otherlibdirs (otherlibdirs.U):
1392 This variable conditionally defines PERL_OTHERLIBDIRS, which
1393 contains a colon-separated set of paths for the perl binary to
1394 include in @INC. See also otherlibdirs.
1396 d_phostname (d_gethname.U):
1397 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1398 contains the shell command which, when fed to popen(), may be
1399 used to derive the host name.
1402 This variable conditionally defines the HAS_PIPE symbol, which
1403 indicates to the C program that the pipe() routine is available
1404 to create an inter-process channel.
1407 This variable conditionally defines the HAS_POLL symbol, which
1408 indicates to the C program that the poll() routine is available
1409 to poll active file descriptors.
1411 d_portable (d_portable.U):
1412 This variable conditionally defines the PORTABLE symbol, which
1413 indicates to the C program that it should not assume that it is
1414 running on the machine it was compiled on.
1416 d_PRId64 (quadfio.U):
1417 This variable conditionally defines the PERL_PRId64 symbol, which
1418 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1420 d_PRIeldbl (longdblfio.U):
1421 This variable conditionally defines the PERL_PRIfldbl symbol, which
1422 indiciates that stdio has a symbol to print long doubles.
1424 d_PRIEUldbl (longdblfio.U):
1425 This variable conditionally defines the PERL_PRIfldbl symbol, which
1426 indiciates that stdio has a symbol to print long doubles.
1427 The 'U' in the name is to separate this from d_PRIeldbl so that even
1428 case-blind systems can see the difference.
1430 d_PRIfldbl (longdblfio.U):
1431 This variable conditionally defines the PERL_PRIfldbl symbol, which
1432 indiciates that stdio has a symbol to print long doubles.
1434 d_PRIFUldbl (longdblfio.U):
1435 This variable conditionally defines the PERL_PRIfldbl symbol, which
1436 indiciates that stdio has a symbol to print long doubles.
1437 The 'U' in the name is to separate this from d_PRIfldbl so that even
1438 case-blind systems can see the difference.
1440 d_PRIgldbl (longdblfio.U):
1441 This variable conditionally defines the PERL_PRIfldbl symbol, which
1442 indiciates that stdio has a symbol to print long doubles.
1444 d_PRIGUldbl (longdblfio.U):
1445 This variable conditionally defines the PERL_PRIfldbl symbol, which
1446 indiciates that stdio has a symbol to print long doubles.
1447 The 'U' in the name is to separate this from d_PRIgldbl so that even
1448 case-blind systems can see the difference.
1450 d_PRIi64 (quadfio.U):
1451 This variable conditionally defines the PERL_PRIi64 symbol, which
1452 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1454 d_PRIo64 (quadfio.U):
1455 This variable conditionally defines the PERL_PRIo64 symbol, which
1456 indiciates that stdio has a symbol to print 64-bit octal numbers.
1458 d_PRIu64 (quadfio.U):
1459 This variable conditionally defines the PERL_PRIu64 symbol, which
1460 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1463 d_PRIx64 (quadfio.U):
1464 This variable conditionally defines the PERL_PRIx64 symbol, which
1465 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1467 d_PRIXU64 (quadfio.U):
1468 This variable conditionally defines the PERL_PRIXU64 symbol, which
1469 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1470 The 'U' in the name is to separate this from d_PRIx64 so that even
1471 case-blind systems can see the difference.
1473 d_procselfexe (d_procselfexe.U):
1474 Defined if $procselfexe is symlink to the absolute
1475 pathname of the executing program.
1477 d_pthread_atfork (d_pthread_atfork.U):
1478 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1479 which indicates to the C program that the pthread_atfork()
1480 routine is available.
1482 d_pthread_yield (d_pthread_y.U):
1483 This variable conditionally defines the HAS_PTHREAD_YIELD
1484 symbol if the pthread_yield routine is available to yield
1485 the execution of the current thread.
1488 This variable conditionally defines PWAGE, which indicates
1489 that struct passwd contains pw_age.
1491 d_pwchange (i_pwd.U):
1492 This variable conditionally defines PWCHANGE, which indicates
1493 that struct passwd contains pw_change.
1495 d_pwclass (i_pwd.U):
1496 This variable conditionally defines PWCLASS, which indicates
1497 that struct passwd contains pw_class.
1499 d_pwcomment (i_pwd.U):
1500 This variable conditionally defines PWCOMMENT, which indicates
1501 that struct passwd contains pw_comment.
1503 d_pwexpire (i_pwd.U):
1504 This variable conditionally defines PWEXPIRE, which indicates
1505 that struct passwd contains pw_expire.
1507 d_pwgecos (i_pwd.U):
1508 This variable conditionally defines PWGECOS, which indicates
1509 that struct passwd contains pw_gecos.
1511 d_pwpasswd (i_pwd.U):
1512 This variable conditionally defines PWPASSWD, which indicates
1513 that struct passwd contains pw_passwd.
1515 d_pwquota (i_pwd.U):
1516 This variable conditionally defines PWQUOTA, which indicates
1517 that struct passwd contains pw_quota.
1519 d_qgcvt (d_qgcvt.U):
1520 This variable conditionally defines the HAS_QGCVT symbol, which
1521 indicates to the C program that the qgcvt() routine is available.
1523 d_quad (quadtype.U):
1524 This variable, if defined, tells that there's a 64-bit integer type,
1527 d_random_r (d_random_r.U):
1528 This variable conditionally defines the HAS_RANDOM_R symbol,
1529 which indicates to the C program that the random_r()
1530 routine is available.
1532 d_readdir64_r (d_readdir64_r.U):
1533 This variable conditionally defines the HAS_READDIR64_R symbol,
1534 which indicates to the C program that the readdir64_r()
1535 routine is available.
1537 d_readdir (d_readdir.U):
1538 This variable conditionally defines HAS_READDIR if readdir() is
1539 available to read directory entries.
1541 d_readdir_r (d_readdir_r.U):
1542 This variable conditionally defines the HAS_READDIR_R symbol,
1543 which indicates to the C program that the readdir_r()
1544 routine is available.
1546 d_readlink (d_readlink.U):
1547 This variable conditionally defines the HAS_READLINK symbol, which
1548 indicates to the C program that the readlink() routine is available
1549 to read the value of a symbolic link.
1551 d_readv (d_readv.U):
1552 This variable conditionally defines the HAS_READV symbol, which
1553 indicates to the C program that the readv() routine is available.
1555 d_recvmsg (d_recvmsg.U):
1556 This variable conditionally defines the HAS_RECVMSG symbol, which
1557 indicates to the C program that the recvmsg() routine is available.
1559 d_rename (d_rename.U):
1560 This variable conditionally defines the HAS_RENAME symbol, which
1561 indicates to the C program that the rename() routine is available
1564 d_rewinddir (d_readdir.U):
1565 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1568 d_rmdir (d_rmdir.U):
1569 This variable conditionally defines HAS_RMDIR if rmdir() is
1570 available to remove directories.
1572 d_safebcpy (d_safebcpy.U):
1573 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1574 the bcopy() routine can do overlapping copies. Normally, you
1575 should probably use memmove().
1577 d_safemcpy (d_safemcpy.U):
1578 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1579 the memcpy() routine can do overlapping copies.
1580 For overlapping copies, memmove() should be used, if available.
1582 d_sanemcmp (d_sanemcmp.U):
1583 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1584 the memcpy() routine is available and can be used to compare relative
1585 magnitudes of chars with their high bits set.
1587 d_sbrkproto (d_sbrkproto.U):
1588 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1589 which indicates to the C program that the system provides
1590 a prototype for the sbrk() function. Otherwise, it is
1591 up to the program to supply one.
1593 d_scalbnl (d_scalbnl.U):
1594 This variable conditionally defines the HAS_SCALBNL symbol, which
1595 indicates to the C program that the scalbnl() routine is available.
1596 If ilogbl is also present we can emulate frexpl.
1598 d_sched_yield (d_pthread_y.U):
1599 This variable conditionally defines the HAS_SCHED_YIELD
1600 symbol if the sched_yield routine is available to yield
1601 the execution of the current thread.
1603 d_scm_rights (d_socket.U):
1604 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1605 which indicates that the SCM_RIGHTS is available. #ifdef is
1606 not enough because it may be an enum, glibc has been known to do this.
1608 d_SCNfldbl (longdblfio.U):
1609 This variable conditionally defines the PERL_PRIfldbl symbol, which
1610 indiciates that stdio has a symbol to scan long doubles.
1612 d_seekdir (d_readdir.U):
1613 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1616 d_select (d_select.U):
1617 This variable conditionally defines HAS_SELECT if select() is
1618 available to select active file descriptors. A <sys/time.h>
1619 inclusion may be necessary for the timeout field.
1622 This variable conditionally defines the HAS_SEM symbol, which
1623 indicates that the entire sem*(2) library is present.
1625 d_semctl (d_semctl.U):
1626 This variable conditionally defines the HAS_SEMCTL symbol, which
1627 indicates to the C program that the semctl() routine is available.
1629 d_semctl_semid_ds (d_union_semun.U):
1630 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1631 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1633 d_semctl_semun (d_union_semun.U):
1634 This variable conditionally defines USE_SEMCTL_SEMUN, which
1635 indicates that union semun is to be used for semctl IPC_STAT.
1637 d_semget (d_semget.U):
1638 This variable conditionally defines the HAS_SEMGET symbol, which
1639 indicates to the C program that the semget() routine is available.
1641 d_semop (d_semop.U):
1642 This variable conditionally defines the HAS_SEMOP symbol, which
1643 indicates to the C program that the semop() routine is available.
1645 d_sendmsg (d_sendmsg.U):
1646 This variable conditionally defines the HAS_SENDMSG symbol, which
1647 indicates to the C program that the sendmsg() routine is available.
1649 d_setegid (d_setegid.U):
1650 This variable conditionally defines the HAS_SETEGID symbol, which
1651 indicates to the C program that the setegid() routine is available
1652 to change the effective gid of the current program.
1654 d_seteuid (d_seteuid.U):
1655 This variable conditionally defines the HAS_SETEUID symbol, which
1656 indicates to the C program that the seteuid() routine is available
1657 to change the effective uid of the current program.
1659 d_setgrent (d_setgrent.U):
1660 This variable conditionally defines the HAS_SETGRENT symbol, which
1661 indicates to the C program that the setgrent() routine is available
1662 for initializing sequential access to the group database.
1664 d_setgrent_r (d_setgrent_r.U):
1665 This variable conditionally defines the HAS_SETGRENT_R symbol,
1666 which indicates to the C program that the setgrent_r()
1667 routine is available.
1669 d_setgrps (d_setgrps.U):
1670 This variable conditionally defines the HAS_SETGROUPS symbol, which
1671 indicates to the C program that the setgroups() routine is available
1672 to set the list of process groups.
1674 d_sethent (d_sethent.U):
1675 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1678 d_sethostent_r (d_sethostent_r.U):
1679 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1680 which indicates to the C program that the sethostent_r()
1681 routine is available.
1683 d_setitimer (d_setitimer.U):
1684 This variable conditionally defines the HAS_SETITIMER symbol, which
1685 indicates to the C program that the setitimer() routine is available.
1687 d_setlinebuf (d_setlnbuf.U):
1688 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1689 indicates to the C program that the setlinebuf() routine is available
1690 to change stderr or stdout from block-buffered or unbuffered to a
1693 d_setlocale (d_setlocale.U):
1694 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1695 available to handle locale-specific ctype implementations.
1697 d_setlocale_r (d_setlocale_r.U):
1698 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1699 which indicates to the C program that the setlocale_r()
1700 routine is available.
1702 d_setnent (d_setnent.U):
1703 This variable conditionally defines HAS_SETNETENT if setnetent() is
1706 d_setnetent_r (d_setnetent_r.U):
1707 This variable conditionally defines the HAS_SETNETENT_R symbol,
1708 which indicates to the C program that the setnetent_r()
1709 routine is available.
1711 d_setpent (d_setpent.U):
1712 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1715 d_setpgid (d_setpgid.U):
1716 This variable conditionally defines the HAS_SETPGID symbol if the
1717 setpgid(pid, gpid) function is available to set process group ID.
1719 d_setpgrp2 (d_setpgrp2.U):
1720 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1721 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1722 is available to set the current process group.
1724 d_setpgrp (d_setpgrp.U):
1725 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1726 available to set the current process group.
1728 d_setprior (d_setprior.U):
1729 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1730 is available to set a process's priority.
1732 d_setproctitle (d_setproctitle.U):
1733 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1734 which indicates to the C program that the setproctitle() routine
1737 d_setprotoent_r (d_setprotoent_r.U):
1738 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1739 which indicates to the C program that the setprotoent_r()
1740 routine is available.
1742 d_setpwent (d_setpwent.U):
1743 This variable conditionally defines the HAS_SETPWENT symbol, which
1744 indicates to the C program that the setpwent() routine is available
1745 for initializing sequential access to the passwd database.
1747 d_setpwent_r (d_setpwent_r.U):
1748 This variable conditionally defines the HAS_SETPWENT_R symbol,
1749 which indicates to the C program that the setpwent_r()
1750 routine is available.
1752 d_setregid (d_setregid.U):
1753 This variable conditionally defines HAS_SETREGID if setregid() is
1754 available to change the real and effective gid of the current
1757 d_setresgid (d_setregid.U):
1758 This variable conditionally defines HAS_SETRESGID if setresgid() is
1759 available to change the real, effective and saved gid of the current
1762 d_setresuid (d_setreuid.U):
1763 This variable conditionally defines HAS_SETREUID if setresuid() is
1764 available to change the real, effective and saved uid of the current
1767 d_setreuid (d_setreuid.U):
1768 This variable conditionally defines HAS_SETREUID if setreuid() is
1769 available to change the real and effective uid of the current
1772 d_setrgid (d_setrgid.U):
1773 This variable conditionally defines the HAS_SETRGID symbol, which
1774 indicates to the C program that the setrgid() routine is available
1775 to change the real gid of the current program.
1777 d_setruid (d_setruid.U):
1778 This variable conditionally defines the HAS_SETRUID symbol, which
1779 indicates to the C program that the setruid() routine is available
1780 to change the real uid of the current program.
1782 d_setsent (d_setsent.U):
1783 This variable conditionally defines HAS_SETSERVENT if setservent() is
1786 d_setservent_r (d_setservent_r.U):
1787 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1788 which indicates to the C program that the setservent_r()
1789 routine is available.
1791 d_setsid (d_setsid.U):
1792 This variable conditionally defines HAS_SETSID if setsid() is
1793 available to set the process group ID.
1795 d_setvbuf (d_setvbuf.U):
1796 This variable conditionally defines the HAS_SETVBUF symbol, which
1797 indicates to the C program that the setvbuf() routine is available
1798 to change buffering on an open stdio stream.
1801 This variable conditionally defines the USE_SFIO symbol,
1802 and indicates whether sfio is available (and should be used).
1805 This variable conditionally defines the HAS_SHM symbol, which
1806 indicates that the entire shm*(2) library is present.
1808 d_shmat (d_shmat.U):
1809 This variable conditionally defines the HAS_SHMAT symbol, which
1810 indicates to the C program that the shmat() routine is available.
1812 d_shmatprototype (d_shmat.U):
1813 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1814 symbol, which indicates that sys/shm.h has a prototype for
1817 d_shmctl (d_shmctl.U):
1818 This variable conditionally defines the HAS_SHMCTL symbol, which
1819 indicates to the C program that the shmctl() routine is available.
1821 d_shmdt (d_shmdt.U):
1822 This variable conditionally defines the HAS_SHMDT symbol, which
1823 indicates to the C program that the shmdt() routine is available.
1825 d_shmget (d_shmget.U):
1826 This variable conditionally defines the HAS_SHMGET symbol, which
1827 indicates to the C program that the shmget() routine is available.
1829 d_sigaction (d_sigaction.U):
1830 This variable conditionally defines the HAS_SIGACTION symbol, which
1831 indicates that the Vr4 sigaction() routine is available.
1833 d_sigprocmask (d_sigprocmask.U):
1834 This variable conditionally defines HAS_SIGPROCMASK
1835 if sigprocmask() is available to examine or change the signal mask
1836 of the calling process.
1838 d_sigsetjmp (d_sigsetjmp.U):
1839 This variable conditionally defines the HAS_SIGSETJMP symbol,
1840 which indicates that the sigsetjmp() routine is available to
1841 call setjmp() and optionally save the process's signal mask.
1843 d_sockatmark (d_sockatmark.U):
1844 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1845 indicates to the C program that the sockatmark() routine is available.
1847 d_sockatmarkproto (d_sockatmarkproto.U):
1848 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1849 which indicates to the C program that the system provides
1850 a prototype for the sockatmark() function. Otherwise, it is
1851 up to the program to supply one.
1853 d_socket (d_socket.U):
1854 This variable conditionally defines HAS_SOCKET, which indicates
1855 that the BSD socket interface is supported.
1857 d_socklen_t (d_socklen_t.U):
1858 This symbol will be defined if the C compiler supports socklen_t.
1860 d_sockpair (d_socket.U):
1861 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1862 indicates that the BSD socketpair() is supported.
1864 d_socks5_init (d_socks5_init.U):
1865 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1866 indicates to the C program that the socks5_init() routine is available.
1868 d_sqrtl (d_sqrtl.U):
1869 This variable conditionally defines the HAS_SQRTL symbol, which
1870 indicates to the C program that the sqrtl() routine is available.
1872 d_srand48_r (d_srand48_r.U):
1873 This variable conditionally defines the HAS_SRAND48_R symbol,
1874 which indicates to the C program that the srand48_r()
1875 routine is available.
1877 d_srandom_r (d_srandom_r.U):
1878 This variable conditionally defines the HAS_SRANDOM_R symbol,
1879 which indicates to the C program that the srandom_r()
1880 routine is available.
1882 d_sresgproto (d_sresgproto.U):
1883 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1884 which indicates to the C program that the system provides
1885 a prototype for the setresgid() function. Otherwise, it is
1886 up to the program to supply one.
1888 d_sresuproto (d_sresuproto.U):
1889 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1890 which indicates to the C program that the system provides
1891 a prototype for the setresuid() function. Otherwise, it is
1892 up to the program to supply one.
1894 d_statblks (d_statblks.U):
1895 This variable conditionally defines USE_STAT_BLOCKS
1896 if this system has a stat structure declaring
1897 st_blksize and st_blocks.
1899 d_statfs_f_flags (d_statfs_f_flags.U):
1900 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1901 symbol, which indicates to struct statfs from has f_flags member.
1902 This kind of struct statfs is coming from sys/mount.h (BSD),
1903 not from sys/statfs.h (SYSV).
1905 d_statfs_s (d_statfs_s.U):
1906 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1907 which indicates that the struct statfs is supported.
1909 d_statvfs (d_statvfs.U):
1910 This variable conditionally defines the HAS_STATVFS symbol, which
1911 indicates to the C program that the statvfs() routine is available.
1913 d_stdio_cnt_lval (d_stdstdio.U):
1914 This variable conditionally defines STDIO_CNT_LVALUE if the
1915 FILE_cnt macro can be used as an lvalue.
1917 d_stdio_ptr_lval (d_stdstdio.U):
1918 This variable conditionally defines STDIO_PTR_LVALUE if the
1919 FILE_ptr macro can be used as an lvalue.
1921 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
1922 This symbol is defined if using the FILE_ptr macro as an lvalue
1923 to increase the pointer by n leaves File_cnt(fp) unchanged.
1925 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1926 This symbol is defined if using the FILE_ptr macro as an lvalue
1927 to increase the pointer by n has the side effect of decreasing the
1928 value of File_cnt(fp) by n.
1930 d_stdio_stream_array (stdio_streams.U):
1931 This variable tells whether there is an array holding
1934 d_stdiobase (d_stdstdio.U):
1935 This variable conditionally defines USE_STDIO_BASE if this system
1936 has a FILE structure declaring a usable _base field (or equivalent)
1939 d_stdstdio (d_stdstdio.U):
1940 This variable conditionally defines USE_STDIO_PTR if this system
1941 has a FILE structure declaring usable _ptr and _cnt fields (or
1942 equivalent) in stdio.h.
1944 d_strchr (d_strchr.U):
1945 This variable conditionally defines HAS_STRCHR if strchr() and
1946 strrchr() are available for string searching.
1948 d_strcoll (d_strcoll.U):
1949 This variable conditionally defines HAS_STRCOLL if strcoll() is
1950 available to compare strings using collating information.
1952 d_strctcpy (d_strctcpy.U):
1953 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1954 indicates to the C program that this C compiler knows how to copy
1957 d_strerrm (d_strerror.U):
1958 This variable holds what Strerrr is defined as to translate an error
1959 code condition into an error message string. It could be 'strerror'
1960 or a more complex macro emulating strrror with sys_errlist[], or the
1961 "unknown" string when both strerror and sys_errlist are missing.
1963 d_strerror (d_strerror.U):
1964 This variable conditionally defines HAS_STRERROR if strerror() is
1965 available to translate error numbers to strings.
1967 d_strerror_r (d_strerror_r.U):
1968 This variable conditionally defines the HAS_STRERROR_R symbol,
1969 which indicates to the C program that the strerror_r()
1970 routine is available.
1972 d_strftime (d_strftime.U):
1973 This variable conditionally defines the HAS_STRFTIME symbol, which
1974 indicates to the C program that the strftime() routine is available.
1976 d_strtod (d_strtod.U):
1977 This variable conditionally defines the HAS_STRTOD symbol, which
1978 indicates to the C program that the strtod() routine is available
1979 to provide better numeric string conversion than atof().
1981 d_strtol (d_strtol.U):
1982 This variable conditionally defines the HAS_STRTOL symbol, which
1983 indicates to the C program that the strtol() routine is available
1984 to provide better numeric string conversion than atoi() and friends.
1986 d_strtold (d_strtold.U):
1987 This variable conditionally defines the HAS_STRTOLD symbol, which
1988 indicates to the C program that the strtold() routine is available.
1990 d_strtoll (d_strtoll.U):
1991 This variable conditionally defines the HAS_STRTOLL symbol, which
1992 indicates to the C program that the strtoll() routine is available.
1994 d_strtoq (d_strtoq.U):
1995 This variable conditionally defines the HAS_STRTOQ symbol, which
1996 indicates to the C program that the strtoq() routine is available.
1998 d_strtoul (d_strtoul.U):
1999 This variable conditionally defines the HAS_STRTOUL symbol, which
2000 indicates to the C program that the strtoul() routine is available
2001 to provide conversion of strings to unsigned long.
2003 d_strtoull (d_strtoull.U):
2004 This variable conditionally defines the HAS_STRTOULL symbol, which
2005 indicates to the C program that the strtoull() routine is available.
2007 d_strtouq (d_strtouq.U):
2008 This variable conditionally defines the HAS_STRTOUQ symbol, which
2009 indicates to the C program that the strtouq() routine is available.
2011 d_strxfrm (d_strxfrm.U):
2012 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2013 available to transform strings.
2015 d_suidsafe (d_dosuid.U):
2016 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2017 if setuid scripts can be secure. This test looks in /dev/fd/.
2019 d_symlink (d_symlink.U):
2020 This variable conditionally defines the HAS_SYMLINK symbol, which
2021 indicates to the C program that the symlink() routine is available
2022 to create symbolic links.
2024 d_syscall (d_syscall.U):
2025 This variable conditionally defines HAS_SYSCALL if syscall() is
2026 available call arbitrary system calls.
2028 d_syscallproto (d_syscallproto.U):
2029 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2030 which indicates to the C program that the system provides
2031 a prototype for the syscall() function. Otherwise, it is
2032 up to the program to supply one.
2034 d_sysconf (d_sysconf.U):
2035 This variable conditionally defines the HAS_SYSCONF symbol, which
2036 indicates to the C program that the sysconf() routine is available
2037 to determine system related limits and options.
2039 d_sysernlst (d_strerror.U):
2040 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2041 is available to translate error numbers to the symbolic name.
2043 d_syserrlst (d_strerror.U):
2044 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2045 available to translate error numbers to strings.
2047 d_system (d_system.U):
2048 This variable conditionally defines HAS_SYSTEM if system() is
2049 available to issue a shell command.
2051 d_tcgetpgrp (d_tcgtpgrp.U):
2052 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2053 indicates to the C program that the tcgetpgrp() routine is available.
2054 to get foreground process group ID.
2056 d_tcsetpgrp (d_tcstpgrp.U):
2057 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2058 indicates to the C program that the tcsetpgrp() routine is available
2059 to set foreground process group ID.
2061 d_telldir (d_readdir.U):
2062 This variable conditionally defines HAS_TELLDIR if telldir() is
2065 d_telldirproto (d_telldirproto.U):
2066 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2067 which indicates to the C program that the system provides
2068 a prototype for the telldir() function. Otherwise, it is
2069 up to the program to supply one.
2072 This variable conditionally defines the HAS_TIME symbol, which indicates
2073 that the time() routine exists. The time() routine is normaly
2074 provided on UNIX systems.
2076 d_times (d_times.U):
2077 This variable conditionally defines the HAS_TIMES symbol, which indicates
2078 that the times() routine exists. The times() routine is normaly
2079 provided on UNIX systems. You may have to include <sys/times.h>.
2081 d_tm_tm_gmtoff (i_time.U):
2082 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2083 indicates to the C program that the struct tm has the tm_gmtoff field.
2085 d_tm_tm_zone (i_time.U):
2086 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2087 indicates to the C program that the struct tm has the tm_zone field.
2089 d_tmpnam_r (d_tmpnam_r.U):
2090 This variable conditionally defines the HAS_TMPNAM_R symbol,
2091 which indicates to the C program that the tmpnam_r()
2092 routine is available.
2094 d_truncate (d_truncate.U):
2095 This variable conditionally defines HAS_TRUNCATE if truncate() is
2096 available to truncate files.
2098 d_ttyname_r (d_ttyname_r.U):
2099 This variable conditionally defines the HAS_TTYNAME_R symbol,
2100 which indicates to the C program that the ttyname_r()
2101 routine is available.
2103 d_tzname (d_tzname.U):
2104 This variable conditionally defines HAS_TZNAME if tzname[] is
2105 available to access timezone names.
2107 d_u32align (d_u32align.U):
2108 This variable tells whether you must access character data
2109 through U32-aligned pointers.
2111 d_ualarm (d_ualarm.U):
2112 This variable conditionally defines the HAS_UALARM symbol, which
2113 indicates to the C program that the ualarm() routine is available.
2115 d_umask (d_umask.U):
2116 This variable conditionally defines the HAS_UMASK symbol, which
2117 indicates to the C program that the umask() routine is available.
2118 to set and get the value of the file creation mask.
2120 d_uname (d_gethname.U):
2121 This variable conditionally defines the HAS_UNAME symbol, which
2122 indicates to the C program that the uname() routine may be
2123 used to derive the host name.
2125 d_union_semun (d_union_semun.U):
2126 This variable conditionally defines HAS_UNION_SEMUN if the
2127 union semun is defined by including <sys/sem.h>.
2129 d_unordered (d_unordered.U):
2130 This variable conditionally defines the HAS_UNORDERED symbol, which
2131 indicates to the C program that the unordered() routine is available.
2133 d_usleep (d_usleep.U):
2134 This variable conditionally defines HAS_USLEEP if usleep() is
2135 available to do high granularity sleeps.
2137 d_usleepproto (d_usleepproto.U):
2138 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2139 which indicates to the C program that the system provides
2140 a prototype for the usleep() function. Otherwise, it is
2141 up to the program to supply one.
2143 d_ustat (d_ustat.U):
2144 This variable conditionally defines HAS_USTAT if ustat() is
2145 available to query file system statistics by dev_t.
2147 d_vendorarch (vendorarch.U):
2148 This variable conditionally defined PERL_VENDORARCH.
2150 d_vendorbin (vendorbin.U):
2151 This variable conditionally defines PERL_VENDORBIN.
2153 d_vendorlib (vendorlib.U):
2154 This variable conditionally defines PERL_VENDORLIB.
2156 d_vendorscript (vendorscript.U):
2157 This variable conditionally defines PERL_VENDORSCRIPT.
2159 d_vfork (d_vfork.U):
2160 This variable conditionally defines the HAS_VFORK symbol, which
2161 indicates the vfork() routine is available.
2163 d_void_closedir (d_closedir.U):
2164 This variable conditionally defines VOID_CLOSEDIR if closedir()
2165 does not return a value.
2167 d_voidsig (d_voidsig.U):
2168 This variable conditionally defines VOIDSIG if this system
2169 declares "void (*signal(...))()" in signal.h. The old way was to
2170 declare it as "int (*signal(...))()".
2172 d_voidtty (i_sysioctl.U):
2173 This variable conditionally defines USE_IOCNOTTY to indicate that the
2174 ioctl() call with TIOCNOTTY should be used to void tty association.
2175 Otherwise (on USG probably), it is enough to close the standard file
2176 decriptors and do a setpgrp().
2178 d_volatile (d_volatile.U):
2179 This variable conditionally defines the HASVOLATILE symbol, which
2180 indicates to the C program that this C compiler knows about the
2181 volatile declaration.
2183 d_vprintf (d_vprintf.U):
2184 This variable conditionally defines the HAS_VPRINTF symbol, which
2185 indicates to the C program that the vprintf() routine is available
2186 to printf with a pointer to an argument list.
2188 d_wait4 (d_wait4.U):
2189 This variable conditionally defines the HAS_WAIT4 symbol, which
2190 indicates the wait4() routine is available.
2192 d_waitpid (d_waitpid.U):
2193 This variable conditionally defines HAS_WAITPID if waitpid() is
2194 available to wait for child process.
2196 d_wcstombs (d_wcstombs.U):
2197 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2198 indicates to the C program that the wcstombs() routine is available
2199 to convert wide character strings to multibyte strings.
2201 d_wctomb (d_wctomb.U):
2202 This variable conditionally defines the HAS_WCTOMB symbol, which
2203 indicates to the C program that the wctomb() routine is available
2204 to convert a wide character to a multibyte.
2206 d_writev (d_writev.U):
2207 This variable conditionally defines the HAS_WRITEV symbol, which
2208 indicates to the C program that the writev() routine is available.
2211 This variable conditionally defines the symbol XENIX, which alerts
2212 the C program that it runs under Xenix.
2215 This variable is used internally by Configure to determine the
2216 full pathname (if any) of the date program. After Configure runs,
2217 the value is reset to a plain "date" and is not useful.
2219 db_hashtype (i_db.U):
2220 This variable contains the type of the hash structure element
2221 in the <db.h> header file. In older versions of DB, it was
2222 int, while in newer ones it is u_int32_t.
2224 db_prefixtype (i_db.U):
2225 This variable contains the type of the prefix structure element
2226 in the <db.h> header file. In older versions of DB, it was
2227 int, while in newer ones it is size_t.
2229 db_version_major (i_db.U):
2230 This variable contains the major version number of
2231 Berkeley DB found in the <db.h> header file.
2233 db_version_minor (i_db.U):
2234 This variable contains the minor version number of
2235 Berkeley DB found in the <db.h> header file.
2236 For DB version 1 this is always 0.
2238 db_version_patch (i_db.U):
2239 This variable contains the patch version number of
2240 Berkeley DB found in the <db.h> header file.
2241 For DB version 1 this is always 0.
2243 defvoidused (voidflags.U):
2244 This variable contains the default value of the VOIDUSED symbol (15).
2246 direntrytype (i_dirent.U):
2247 This symbol is set to 'struct direct' or 'struct dirent' depending on
2248 whether dirent is available or not. You should use this pseudo type to
2249 portably declare your directory entries.
2252 This variable contains the extension that is to be used for the
2253 dynamically loaded modules that perl generaties.
2256 This variable contains the name of the dynamic loading file that
2257 will be used with the package.
2259 doublesize (doublesize.U):
2260 This variable contains the value of the DOUBLESIZE symbol, which
2261 indicates to the C program how many bytes there are in a double.
2263 drand01 (randfunc.U):
2264 Indicates the macro to be used to generate normalized
2265 random numbers. Uses randfunc, often divided by
2266 (double) (((unsigned long) 1 << randbits)) in order to
2267 normalize the result.
2268 In C programs, the macro 'Drand01' is mapped to drand01.
2270 drand48_r_proto (d_drand48_r.U):
2271 This variable encodes the prototype of drand48_r.
2272 It is zero if d_drand48_r is undef, and one of the
2273 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2276 dynamic_ext (Extensions.U):
2277 This variable holds a list of XS extension files we want to
2278 link dynamically into the package. It is used by Makefile.
2280 eagain (nblock_io.U):
2281 This variable bears the symbolic errno code set by read() when no
2282 data is present on the file and non-blocking I/O was enabled (otherwise,
2283 read() blocks naturally).
2286 This variable conditionally defines EBCDIC if this
2287 system uses EBCDIC encoding. Among other things, this
2288 means that the character ranges are not contiguous.
2292 This variable is used internally by Configure to determine the
2293 full pathname (if any) of the echo program. After Configure runs,
2294 the value is reset to a plain "echo" and is not useful.
2297 This variable is used internally by Configure to determine the
2298 full pathname (if any) of the egrep program. After Configure runs,
2299 the value is reset to a plain "egrep" and is not useful.
2302 This variable is defined but not used by Configure.
2303 The value is a plain '' and is not useful.
2305 endgrent_r_proto (d_endgrent_r.U):
2306 This variable encodes the prototype of endgrent_r.
2307 It is zero if d_endgrent_r is undef, and one of the
2308 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2311 endhostent_r_proto (d_endhostent_r.U):
2312 This variable encodes the prototype of endhostent_r.
2313 It is zero if d_endhostent_r is undef, and one of the
2314 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2317 endnetent_r_proto (d_endnetent_r.U):
2318 This variable encodes the prototype of endnetent_r.
2319 It is zero if d_endnetent_r is undef, and one of the
2320 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2323 endprotoent_r_proto (d_endprotoent_r.U):
2324 This variable encodes the prototype of endprotoent_r.
2325 It is zero if d_endprotoent_r is undef, and one of the
2326 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2329 endpwent_r_proto (d_endpwent_r.U):
2330 This variable encodes the prototype of endpwent_r.
2331 It is zero if d_endpwent_r is undef, and one of the
2332 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2335 endservent_r_proto (d_endservent_r.U):
2336 This variable encodes the prototype of endservent_r.
2337 It is zero if d_endservent_r is undef, and one of the
2338 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2342 When running under Eunice this variable contains a command which will
2343 convert a shell script to the proper form of text file for it to be
2344 executable by the shell. On other systems it is a no-op.
2347 This is an old synonym for _exe.
2350 This variable is used internally by Configure to determine the
2351 full pathname (if any) of the expr program. After Configure runs,
2352 the value is reset to a plain "expr" and is not useful.
2354 extensions (Extensions.U):
2355 This variable holds a list of all extension files (both XS and
2356 non-xs linked into the package. It is propagated to Config.pm
2357 and is typically used to test whether a particular extesion
2361 This variable holds a list of extra modules to install.
2363 fflushall (fflushall.U):
2364 This symbol, if defined, tells that to flush
2365 all pending stdio output one must loop through all
2366 the stdio file handles stored in an array and fflush them.
2367 Note that if fflushNULL is defined, fflushall will not
2368 even be probed for and will be left undefined.
2370 fflushNULL (fflushall.U):
2371 This symbol, if defined, tells that fflush(NULL) does flush
2372 all pending stdio output.
2375 This variable is defined but not used by Configure.
2376 The value is a plain '' and is not useful.
2378 firstmakefile (Unix.U):
2379 This variable defines the first file searched by make. On unix,
2380 it is makefile (then Makefile). On case-insensitive systems,
2381 it might be something else. This is only used to deal with
2382 convoluted make depend tricks.
2385 This variable is defined but not used by Configure.
2386 The value is a plain '' and is not useful.
2388 fpossize (fpossize.U):
2389 This variable contains the size of a fpostype in bytes.
2391 fpostype (fpostype.U):
2392 This variable defines Fpos_t to be something like fpos_t, long,
2393 uint, or whatever type is used to declare file positions in libc.
2395 freetype (mallocsrc.U):
2396 This variable contains the return type of free(). It is usually
2397 void, but occasionally int.
2400 This variable contains the command used by Configure
2401 to copy files from the target host. Useful and available
2402 only during Perl build.
2403 The string ':' if not cross-compiling.
2406 This variable contains the full pathname to 'ar', whether or
2407 not the user has specified 'portability'. This is only used
2411 This variable contains the full pathname to 'csh', whether or
2412 not the user has specified 'portability'. This is only used
2413 in the compiled C program, and we assume that all systems which
2414 can share this executable will have the same full pathname to
2417 full_sed (Loc_sed.U):
2418 This variable contains the full pathname to 'sed', whether or
2419 not the user has specified 'portability'. This is only used
2420 in the compiled C program, and we assume that all systems which
2421 can share this executable will have the same full pathname to
2424 gccansipedantic (gccvers.U):
2425 If GNU cc (gcc) is used, this variable will enable (if set) the
2426 -ansi and -pedantic ccflags for building core files (through
2427 cflags script). (See Porting/pumpkin.pod for full description).
2429 gccosandvers (gccvers.U):
2430 If GNU cc (gcc) is used, this variable holds the operating system
2431 and version used to compile gcc. It is set to '' if not gcc,
2432 or if nothing useful can be parsed as the os version.
2434 gccversion (gccvers.U):
2435 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2436 indicate whether the compiler is version 1 or 2. This is used in
2437 setting some of the default cflags. It is set to '' if not gcc.
2439 getgrent_r_proto (d_getgrent_r.U):
2440 This variable encodes the prototype of getgrent_r.
2441 It is zero if d_getgrent_r is undef, and one of the
2442 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2445 getgrgid_r_proto (d_getgrgid_r.U):
2446 This variable encodes the prototype of getgrgid_r.
2447 It is zero if d_getgrgid_r is undef, and one of the
2448 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2451 getgrnam_r_proto (d_getgrnam_r.U):
2452 This variable encodes the prototype of getgrnam_r.
2453 It is zero if d_getgrnam_r is undef, and one of the
2454 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2457 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2458 This variable encodes the prototype of gethostbyaddr_r.
2459 It is zero if d_gethostbyaddr_r is undef, and one of the
2460 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2463 gethostbyname_r_proto (d_gethostbyname_r.U):
2464 This variable encodes the prototype of gethostbyname_r.
2465 It is zero if d_gethostbyname_r is undef, and one of the
2466 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2469 gethostent_r_proto (d_gethostent_r.U):
2470 This variable encodes the prototype of gethostent_r.
2471 It is zero if d_gethostent_r is undef, and one of the
2472 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2475 getlogin_r_proto (d_getlogin_r.U):
2476 This variable encodes the prototype of getlogin_r.
2477 It is zero if d_getlogin_r is undef, and one of the
2478 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2481 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2482 This variable encodes the prototype of getnetbyaddr_r.
2483 It is zero if d_getnetbyaddr_r is undef, and one of the
2484 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2487 getnetbyname_r_proto (d_getnetbyname_r.U):
2488 This variable encodes the prototype of getnetbyname_r.
2489 It is zero if d_getnetbyname_r is undef, and one of the
2490 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2493 getnetent_r_proto (d_getnetent_r.U):
2494 This variable encodes the prototype of getnetent_r.
2495 It is zero if d_getnetent_r is undef, and one of the
2496 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2499 getprotobyname_r_proto (d_getprotobyname_r.U):
2500 This variable encodes the prototype of getprotobyname_r.
2501 It is zero if d_getprotobyname_r is undef, and one of the
2502 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2505 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2506 This variable encodes the prototype of getprotobynumber_r.
2507 It is zero if d_getprotobynumber_r is undef, and one of the
2508 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2511 getprotoent_r_proto (d_getprotoent_r.U):
2512 This variable encodes the prototype of getprotoent_r.
2513 It is zero if d_getprotoent_r is undef, and one of the
2514 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2517 getpwent_r_proto (d_getpwent_r.U):
2518 This variable encodes the prototype of getpwent_r.
2519 It is zero if d_getpwent_r is undef, and one of the
2520 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2523 getpwnam_r_proto (d_getpwnam_r.U):
2524 This variable encodes the prototype of getpwnam_r.
2525 It is zero if d_getpwnam_r is undef, and one of the
2526 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2529 getpwuid_r_proto (d_getpwuid_r.U):
2530 This variable encodes the prototype of getpwuid_r.
2531 It is zero if d_getpwuid_r is undef, and one of the
2532 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2535 getservbyname_r_proto (d_getservbyname_r.U):
2536 This variable encodes the prototype of getservbyname_r.
2537 It is zero if d_getservbyname_r is undef, and one of the
2538 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2541 getservbyport_r_proto (d_getservbyport_r.U):
2542 This variable encodes the prototype of getservbyport_r.
2543 It is zero if d_getservbyport_r is undef, and one of the
2544 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2547 getservent_r_proto (d_getservent_r.U):
2548 This variable encodes the prototype of getservent_r.
2549 It is zero if d_getservent_r is undef, and one of the
2550 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2553 getspnam_r_proto (d_getspnam_r.U):
2554 This variable encodes the prototype of getspnam_r.
2555 It is zero if d_getspnam_r is undef, and one of the
2556 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2560 This variable contains the format string used for printing a Gid_t.
2562 gidsign (gidsign.U):
2563 This variable contains the signedness of a gidtype.
2564 1 for unsigned, -1 for signed.
2566 gidsize (gidsize.U):
2567 This variable contains the size of a gidtype in bytes.
2569 gidtype (gidtype.U):
2570 This variable defines Gid_t to be something like gid_t, int,
2571 ushort, or whatever type is used to declare the return type
2572 of getgid(). Typically, it is the type of group ids in the kernel.
2575 This variable holds the general path (space-separated) used to
2576 find libraries. It may contain directories that do not exist on
2577 this platform, libpth is the cleaned-up version.
2580 This variable is used internally by Configure to determine the
2581 full pathname (if any) of the gmake program. After Configure runs,
2582 the value is reset to a plain "gmake" and is not useful.
2584 gmtime_r_proto (d_gmtime_r.U):
2585 This variable encodes the prototype of gmtime_r.
2586 It is zero if d_gmtime_r is undef, and one of the
2587 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2590 gnulibc_version (d_gnulibc.U):
2591 This variable contains the version number of the GNU C library.
2592 It is usually something like '2.2.5'. It is a plain '' if this
2593 is not the GNU C library, or if the version is unknown.
2596 This variable is used internally by Configure to determine the
2597 full pathname (if any) of the grep program. After Configure runs,
2598 the value is reset to a plain "grep" and is not useful.
2601 This variable contains a command that produces the text of the
2602 /etc/group file. This is normally "cat /etc/group", but can be
2603 "ypcat group" when NIS is used.
2604 On some systems, such as os390, there may be no equivalent
2605 command, in which case this variable is unset.
2607 groupstype (groupstype.U):
2608 This variable defines Groups_t to be something like gid_t, int,
2609 ushort, or whatever type is used for the second argument to
2610 getgroups() and setgroups(). Usually, this is the same as
2611 gidtype (gid_t), but sometimes it isn't.
2614 This variable is used internally by Configure to determine the
2615 full pathname (if any) of the gzip program. After Configure runs,
2616 the value is reset to a plain "gzip" and is not useful.
2618 h_fcntl (h_fcntl.U):
2619 This is variable gets set in various places to tell i_fcntl that
2620 <fcntl.h> should be included.
2622 h_sysfile (h_sysfile.U):
2623 This is variable gets set in various places to tell i_sys_file that
2624 <sys/file.h> should be included.
2627 Gives the type of hints used for previous answers. May be one of
2628 "default", "recommended" or "previous".
2631 This variable contains a command that produces the text of the
2632 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2633 "ypcat hosts" when NIS is used.
2634 On some systems, such as os390, there may be no equivalent
2635 command, in which case this variable is unset.
2637 html1dir (html1dir.U):
2638 This variable contains the name of the directory in which html
2639 source pages are to be put. This directory is for pages
2640 that describe whole programs, not libraries or modules. It
2641 is intended to correspond roughly to section 1 of the Unix
2644 html1direxp (html1dir.U):
2645 This variable is the same as the html1dir variable, but is filename
2646 expanded at configuration time, for convenient use in makefiles.
2648 html3dir (html3dir.U):
2649 This variable contains the name of the directory in which html
2650 source pages are to be put. This directory is for pages
2651 that describe libraries or modules. It is intended to
2652 correspond roughly to section 3 of the Unix manuals.
2654 html3direxp (html3dir.U):
2655 This variable is the same as the html3dir variable, but is filename
2656 expanded at configuration time, for convenient use in makefiles.
2659 This variable is the size of an I16 in bytes.
2662 This variable contains the C type used for Perl's I16.
2665 This variable is the size of an I32 in bytes.
2668 This variable contains the C type used for Perl's I32.
2671 This variable is the size of an I64 in bytes.
2674 This variable contains the C type used for Perl's I64.
2677 This variable is the size of an I8 in bytes.
2680 This variable contains the C type used for Perl's I8.
2682 i_arpainet (i_arpainet.U):
2683 This variable conditionally defines the I_ARPA_INET symbol,
2684 and indicates whether a C program should include <arpa/inet.h>.
2686 i_bsdioctl (i_sysioctl.U):
2687 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2688 indicates to the C program that <sys/bsdioctl.h> exists and should
2691 i_crypt (i_crypt.U):
2692 This variable conditionally defines the I_CRYPT symbol, and indicates
2693 whether a C program should include <crypt.h>.
2696 This variable conditionally defines the I_DB symbol, and indicates
2697 whether a C program may include Berkeley's DB include file <db.h>.
2700 This variable conditionally defines the I_DBM symbol, which
2701 indicates to the C program that <dbm.h> exists and should
2704 i_dirent (i_dirent.U):
2705 This variable conditionally defines I_DIRENT, which indicates
2706 to the C program that it should include <dirent.h>.
2709 This variable conditionally defines the I_DLD symbol, which
2710 indicates to the C program that <dld.h> (GNU dynamic loading)
2711 exists and should be included.
2713 i_dlfcn (i_dlfcn.U):
2714 This variable conditionally defines the I_DLFCN symbol, which
2715 indicates to the C program that <dlfcn.h> exists and should
2718 i_fcntl (i_fcntl.U):
2719 This variable controls the value of I_FCNTL (which tells
2720 the C program to include <fcntl.h>).
2722 i_float (i_float.U):
2723 This variable conditionally defines the I_FLOAT symbol, and indicates
2724 whether a C program may include <float.h> to get symbols like DBL_MAX
2725 or DBL_MIN, i.e. machine dependent floating point values.
2728 This variable conditionally defines the I_FP symbol, and indicates
2729 whether a C program should include <fp.h>.
2731 i_fp_class (i_fp_class.U):
2732 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2733 whether a C program should include <fp_class.h>.
2736 This variable conditionally defines the I_GDBM symbol, which
2737 indicates to the C program that <gdbm.h> exists and should
2741 This variable conditionally defines the I_GRP symbol, and indicates
2742 whether a C program should include <grp.h>.
2744 i_ieeefp (i_ieeefp.U):
2745 This variable conditionally defines the I_IEEEFP symbol, and indicates
2746 whether a C program should include <ieeefp.h>.
2748 i_inttypes (i_inttypes.U):
2749 This variable conditionally defines the I_INTTYPES symbol,
2750 and indicates whether a C program should include <inttypes.h>.
2752 i_langinfo (i_langinfo.U):
2753 This variable conditionally defines the I_LANGINFO symbol,
2754 and indicates whether a C program should include <langinfo.h>.
2756 i_libutil (i_libutil.U):
2757 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2758 whether a C program should include <libutil.h>.
2760 i_limits (i_limits.U):
2761 This variable conditionally defines the I_LIMITS symbol, and indicates
2762 whether a C program may include <limits.h> to get symbols like WORD_BIT
2765 i_locale (i_locale.U):
2766 This variable conditionally defines the I_LOCALE symbol,
2767 and indicates whether a C program should include <locale.h>.
2769 i_machcthr (i_machcthr.U):
2770 This variable conditionally defines the I_MACH_CTHREADS symbol,
2771 and indicates whether a C program should include <mach/cthreads.h>.
2773 i_malloc (i_malloc.U):
2774 This variable conditionally defines the I_MALLOC symbol, and indicates
2775 whether a C program should include <malloc.h>.
2778 This variable conditionally defines the I_MATH symbol, and indicates
2779 whether a C program may include <math.h>.
2781 i_memory (i_memory.U):
2782 This variable conditionally defines the I_MEMORY symbol, and indicates
2783 whether a C program should include <memory.h>.
2785 i_mntent (i_mntent.U):
2786 This variable conditionally defines the I_MNTENT symbol, and indicates
2787 whether a C program should include <mntent.h>.
2790 This variable conditionally defines the I_NDBM symbol, which
2791 indicates to the C program that <ndbm.h> exists and should
2794 i_netdb (i_netdb.U):
2795 This variable conditionally defines the I_NETDB symbol, and indicates
2796 whether a C program should include <netdb.h>.
2798 i_neterrno (i_neterrno.U):
2799 This variable conditionally defines the I_NET_ERRNO symbol, which
2800 indicates to the C program that <net/errno.h> exists and should
2803 i_netinettcp (i_netinettcp.U):
2804 This variable conditionally defines the I_NETINET_TCP symbol,
2805 and indicates whether a C program should include <netinet/tcp.h>.
2808 This variable conditionally defines I_NETINET_IN, which indicates
2809 to the C program that it should include <netinet/in.h>. Otherwise,
2810 you may try <sys/in.h>.
2813 This variable conditionally defines the I_POLL symbol, and indicates
2814 whether a C program should include <poll.h>.
2817 This variable conditionally defines the I_PROT symbol, and indicates
2818 whether a C program should include <prot.h>.
2820 i_pthread (i_pthread.U):
2821 This variable conditionally defines the I_PTHREAD symbol,
2822 and indicates whether a C program should include <pthread.h>.
2825 This variable conditionally defines I_PWD, which indicates
2826 to the C program that it should include <pwd.h>.
2828 i_rpcsvcdbm (i_dbm.U):
2829 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2830 indicates to the C program that <rpcsvc/dbm.h> exists and should
2831 be included. Some System V systems might need this instead of <dbm.h>.
2834 This variable conditionally defines the I_SFIO symbol,
2835 and indicates whether a C program should include <sfio.h>.
2837 i_sgtty (i_termio.U):
2838 This variable conditionally defines the I_SGTTY symbol, which
2839 indicates to the C program that it should include <sgtty.h> rather
2842 i_shadow (i_shadow.U):
2843 This variable conditionally defines the I_SHADOW symbol, and indicates
2844 whether a C program should include <shadow.h>.
2846 i_socks (i_socks.U):
2847 This variable conditionally defines the I_SOCKS symbol, and indicates
2848 whether a C program should include <socks.h>.
2850 i_stdarg (i_varhdr.U):
2851 This variable conditionally defines the I_STDARG symbol, which
2852 indicates to the C program that <stdarg.h> exists and should
2855 i_stddef (i_stddef.U):
2856 This variable conditionally defines the I_STDDEF symbol, which
2857 indicates to the C program that <stddef.h> exists and should
2860 i_stdlib (i_stdlib.U):
2861 This variable conditionally defines the I_STDLIB symbol, which
2862 indicates to the C program that <stdlib.h> exists and should
2865 i_string (i_string.U):
2866 This variable conditionally defines the I_STRING symbol, which
2867 indicates that <string.h> should be included rather than <strings.h>.
2869 i_sunmath (i_sunmath.U):
2870 This variable conditionally defines the I_SUNMATH symbol, and indicates
2871 whether a C program should include <sunmath.h>.
2873 i_sysaccess (i_sysaccess.U):
2874 This variable conditionally defines the I_SYS_ACCESS symbol,
2875 and indicates whether a C program should include <sys/access.h>.
2877 i_sysdir (i_sysdir.U):
2878 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2879 whether a C program should include <sys/dir.h>.
2881 i_sysfile (i_sysfile.U):
2882 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2883 whether a C program should include <sys/file.h> to get R_OK and friends.
2885 i_sysfilio (i_sysioctl.U):
2886 This variable conditionally defines the I_SYS_FILIO symbol, which
2887 indicates to the C program that <sys/filio.h> exists and should
2888 be included in preference to <sys/ioctl.h>.
2891 This variable conditionally defines I_SYS_IN, which indicates
2892 to the C program that it should include <sys/in.h> instead of
2895 i_sysioctl (i_sysioctl.U):
2896 This variable conditionally defines the I_SYS_IOCTL symbol, which
2897 indicates to the C program that <sys/ioctl.h> exists and should
2900 i_syslog (i_syslog.U):
2901 This variable conditionally defines the I_SYSLOG symbol,
2902 and indicates whether a C program should include <syslog.h>.
2904 i_sysmman (i_sysmman.U):
2905 This variable conditionally defines the I_SYS_MMAN symbol, and
2906 indicates whether a C program should include <sys/mman.h>.
2908 i_sysmode (i_sysmode.U):
2909 This variable conditionally defines the I_SYSMODE symbol,
2910 and indicates whether a C program should include <sys/mode.h>.
2912 i_sysmount (i_sysmount.U):
2913 This variable conditionally defines the I_SYSMOUNT symbol,
2914 and indicates whether a C program should include <sys/mount.h>.
2916 i_sysndir (i_sysndir.U):
2917 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2918 whether a C program should include <sys/ndir.h>.
2920 i_sysparam (i_sysparam.U):
2921 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2922 whether a C program should include <sys/param.h>.
2924 i_sysresrc (i_sysresrc.U):
2925 This variable conditionally defines the I_SYS_RESOURCE symbol,
2926 and indicates whether a C program should include <sys/resource.h>.
2928 i_syssecrt (i_syssecrt.U):
2929 This variable conditionally defines the I_SYS_SECURITY symbol,
2930 and indicates whether a C program should include <sys/security.h>.
2932 i_sysselct (i_sysselct.U):
2933 This variable conditionally defines I_SYS_SELECT, which indicates
2934 to the C program that it should include <sys/select.h> in order to
2935 get the definition of struct timeval.
2937 i_syssockio (i_sysioctl.U):
2938 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2939 C program that socket ioctl codes may be found in <sys/sockio.h>
2940 instead of <sys/ioctl.h>.
2942 i_sysstat (i_sysstat.U):
2943 This variable conditionally defines the I_SYS_STAT symbol,
2944 and indicates whether a C program should include <sys/stat.h>.
2946 i_sysstatfs (i_sysstatfs.U):
2947 This variable conditionally defines the I_SYSSTATFS symbol,
2948 and indicates whether a C program should include <sys/statfs.h>.
2950 i_sysstatvfs (i_sysstatvfs.U):
2951 This variable conditionally defines the I_SYSSTATVFS symbol,
2952 and indicates whether a C program should include <sys/statvfs.h>.
2954 i_systime (i_time.U):
2955 This variable conditionally defines I_SYS_TIME, which indicates
2956 to the C program that it should include <sys/time.h>.
2958 i_systimek (i_time.U):
2959 This variable conditionally defines I_SYS_TIME_KERNEL, which
2960 indicates to the C program that it should include <sys/time.h>
2961 with KERNEL defined.
2963 i_systimes (i_systimes.U):
2964 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2965 whether a C program should include <sys/times.h>.
2967 i_systypes (i_systypes.U):
2968 This variable conditionally defines the I_SYS_TYPES symbol,
2969 and indicates whether a C program should include <sys/types.h>.
2971 i_sysuio (i_sysuio.U):
2972 This variable conditionally defines the I_SYSUIO symbol, and indicates
2973 whether a C program should include <sys/uio.h>.
2975 i_sysun (i_sysun.U):
2976 This variable conditionally defines I_SYS_UN, which indicates
2977 to the C program that it should include <sys/un.h> to get UNIX
2978 domain socket definitions.
2980 i_sysutsname (i_sysutsname.U):
2981 This variable conditionally defines the I_SYSUTSNAME symbol,
2982 and indicates whether a C program should include <sys/utsname.h>.
2984 i_sysvfs (i_sysvfs.U):
2985 This variable conditionally defines the I_SYSVFS symbol,
2986 and indicates whether a C program should include <sys/vfs.h>.
2988 i_syswait (i_syswait.U):
2989 This variable conditionally defines I_SYS_WAIT, which indicates
2990 to the C program that it should include <sys/wait.h>.
2992 i_termio (i_termio.U):
2993 This variable conditionally defines the I_TERMIO symbol, which
2994 indicates to the C program that it should include <termio.h> rather
2997 i_termios (i_termio.U):
2998 This variable conditionally defines the I_TERMIOS symbol, which
2999 indicates to the C program that the POSIX <termios.h> file is
3003 This variable conditionally defines I_TIME, which indicates
3004 to the C program that it should include <time.h>.
3006 i_unistd (i_unistd.U):
3007 This variable conditionally defines the I_UNISTD symbol, and indicates
3008 whether a C program should include <unistd.h>.
3010 i_ustat (i_ustat.U):
3011 This variable conditionally defines the I_USTAT symbol, and indicates
3012 whether a C program should include <ustat.h>.
3014 i_utime (i_utime.U):
3015 This variable conditionally defines the I_UTIME symbol, and indicates
3016 whether a C program should include <utime.h>.
3018 i_values (i_values.U):
3019 This variable conditionally defines the I_VALUES symbol, and indicates
3020 whether a C program may include <values.h> to get symbols like MAXLONG
3023 i_varargs (i_varhdr.U):
3024 This variable conditionally defines I_VARARGS, which indicates
3025 to the C program that it should include <varargs.h>.
3027 i_varhdr (i_varhdr.U):
3028 Contains the name of the header to be included to get va_dcl definition.
3029 Typically one of varargs.h or stdarg.h.
3031 i_vfork (i_vfork.U):
3032 This variable conditionally defines the I_VFORK symbol, and indicates
3033 whether a C program should include vfork.h.
3035 ignore_versioned_solibs (libs.U):
3036 This variable should be non-empty if non-versioned shared
3037 libraries (libfoo.so.x.y) are to be ignored (because they
3038 cannot be linked against).
3040 inc_version_list (inc_version_list.U):
3041 This variable specifies the list of subdirectories in over
3042 which perl.c:incpush() and lib/lib.pm will automatically
3043 search when adding directories to @INC. The elements in
3044 the list are separated by spaces. This is only useful
3045 if you have a perl library directory tree structured like the
3046 default one. See INSTALL for how this works. The versioned
3047 site_perl directory was introduced in 5.005, so that is the
3048 lowest possible value.
3050 inc_version_list_init (inc_version_list.U):
3051 This variable holds the same list as inc_version_list, but
3052 each item is enclosed in double quotes and separated by commas,
3053 suitable for use in the PERL_INC_VERSION_LIST initialization.
3056 This variable must preceed the normal include path to get hte
3057 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3058 Value can be "" or "/bsd43" on mips.
3061 This variable is defined but not used by Configure.
3062 The value is a plain '' and is not useful.
3064 installarchlib (archlib.U):
3065 This variable is really the same as archlibexp but may differ on
3066 those systems using AFS. For extra portability, only this variable
3067 should be used in makefiles.
3070 This variable is the same as binexp unless AFS is running in which case
3071 the user is explicitely prompted for it. This variable should always
3072 be used in your makefiles for maximum portability.
3074 installhtml1dir (html1dir.U):
3075 This variable is really the same as html1direxp, unless you are
3076 using a different installprefix. For extra portability, you
3077 should only use this variable within your makefiles.
3079 installhtml3dir (html3dir.U):
3080 This variable is really the same as html3direxp, unless you are
3081 using a different installprefix. For extra portability, you
3082 should only use this variable within your makefiles.
3084 installman1dir (man1dir.U):
3085 This variable is really the same as man1direxp, unless you are using
3086 AFS in which case it points to the read/write location whereas
3087 man1direxp only points to the read-only access location. For extra
3088 portability, you should only use this variable within your makefiles.
3090 installman3dir (man3dir.U):
3091 This variable is really the same as man3direxp, unless you are using
3092 AFS in which case it points to the read/write location whereas
3093 man3direxp only points to the read-only access location. For extra
3094 portability, you should only use this variable within your makefiles.
3096 installprefix (installprefix.U):
3097 This variable holds the name of the directory below which
3098 "make install" will install the package. For most users, this
3099 is the same as prefix. However, it is useful for
3100 installing the software into a different (usually temporary)
3101 location after which it can be bundled up and moved somehow
3102 to the final location specified by prefix.
3104 installprefixexp (installprefix.U):
3105 This variable holds the full absolute path of installprefix
3106 with all ~-expansion done.
3108 installprivlib (privlib.U):
3109 This variable is really the same as privlibexp but may differ on
3110 those systems using AFS. For extra portability, only this variable
3111 should be used in makefiles.
3113 installscript (scriptdir.U):
3114 This variable is usually the same as scriptdirexp, unless you are on
3115 a system running AFS, in which case they may differ slightly. You
3116 should always use this variable within your makefiles for portability.
3118 installsitearch (sitearch.U):
3119 This variable is really the same as sitearchexp but may differ on
3120 those systems using AFS. For extra portability, only this variable
3121 should be used in makefiles.
3123 installsitebin (sitebin.U):
3124 This variable is usually the same as sitebinexp, unless you are on
3125 a system running AFS, in which case they may differ slightly. You
3126 should always use this variable within your makefiles for portability.
3128 installsitehtml1 (sitehtml1.U):
3129 This variable is really the same as sitehtml1exp, unless you are using
3130 AFS in which case it points to the read/write location whereas
3131 html1direxp only points to the read-only access location. For extra
3132 portability, you should only use this variable within your makefiles.
3134 installsitehtml3 (sitehtml3.U):
3135 This variable is really the same as sitehtml3exp, unless you are using
3136 AFS in which case it points to the read/write location whereas
3137 html3direxp only points to the read-only access location. For extra
3138 portability, you should only use this variable within your makefiles.
3140 installsitelib (sitelib.U):
3141 This variable is really the same as sitelibexp but may differ on
3142 those systems using AFS. For extra portability, only this variable
3143 should be used in makefiles.
3145 installsiteman1 (siteman1.U):
3146 This variable is really the same as siteman1exp, unless you are using
3147 AFS in which case it points to the read/write location whereas
3148 man1direxp only points to the read-only access location. For extra
3149 portability, you should only use this variable within your makefiles.
3151 installsiteman3 (siteman3.U):
3152 This variable is really the same as siteman3exp, unless you are using
3153 AFS in which case it points to the read/write location whereas
3154 man3direxp only points to the read-only access location. For extra
3155 portability, you should only use this variable within your makefiles.
3157 installsitescript (sitescript.U):
3158 This variable is usually the same as sitescriptexp, unless you are on
3159 a system running AFS, in which case they may differ slightly. You
3160 should always use this variable within your makefiles for portability.
3162 installstyle (installstyle.U):
3163 This variable describes the "style" of the perl installation.
3164 This is intended to be useful for tools that need to
3165 manipulate entire perl distributions. Perl itself doesn't use
3166 this to find its libraries -- the library directories are
3167 stored directly in Config.pm. Currently, there are only two
3168 styles: "lib" and "lib/perl5". The default library locations
3169 (e.g. privlib, sitelib) are either $prefix/lib or
3170 $prefix/lib/perl5. The former is useful if $prefix is a
3171 directory dedicated to perl (e.g. /opt/perl), while the latter
3172 is useful if $prefix is shared by many packages, e.g. if
3175 Unfortunately, while this "style" variable is used to set
3176 defaults for all three directory hierarchies (core, vendor, and
3177 site), there is no guarantee that the same style is actually
3178 appropriate for all those directories. For example, $prefix
3179 might be /opt/perl, but $siteprefix might be /usr/local.
3180 (Perhaps, in retrospect, the "lib" style should never have been
3181 supported, but it did seem like a nice idea at the time.)
3183 The situation is even less clear for tools such as MakeMaker
3184 that can be used to install additional modules into
3185 non-standard places. For example, if a user intends to install
3186 a module into a private directory (perhaps by setting PREFIX on
3187 the Makefile.PL command line), then there is no reason to
3188 assume that the Configure-time $installstyle setting will be
3189 relevant for that PREFIX.
3191 This may later be extended to include other information, so
3192 be careful with pattern-matching on the results.
3194 For compatibility with perl5.005 and earlier, the default
3195 setting is based on whether or not $prefix contains the string
3198 installusrbinperl (instubperl.U):
3199 This variable tells whether Perl should be installed also as
3200 /usr/bin/perl in addition to
3203 installvendorarch (vendorarch.U):
3204 This variable is really the same as vendorarchexp but may differ on
3205 those systems using AFS. For extra portability, only this variable
3206 should be used in makefiles.
3208 installvendorbin (vendorbin.U):
3209 This variable is really the same as vendorbinexp but may differ on
3210 those systems using AFS. For extra portability, only this variable
3211 should be used in makefiles.
3213 installvendorhtml1 (vendorhtml1.U):
3214 This variable is really the same as vendorhtml1exp but may differ on
3215 those systems using AFS. For extra portability, only this variable
3216 should be used in makefiles.
3218 installvendorhtml3 (vendorhtml3.U):
3219 This variable is really the same as vendorhtml3exp but may differ on
3220 those systems using AFS. For extra portability, only this variable
3221 should be used in makefiles.
3223 installvendorlib (vendorlib.U):
3224 This variable is really the same as vendorlibexp but may differ on
3225 those systems using AFS. For extra portability, only this variable
3226 should be used in makefiles.
3228 installvendorman1 (vendorman1.U):
3229 This variable is really the same as vendorman1exp but may differ on
3230 those systems using AFS. For extra portability, only this variable
3231 should be used in makefiles.
3233 installvendorman3 (vendorman3.U):
3234 This variable is really the same as vendorman3exp but may differ on
3235 those systems using AFS. For extra portability, only this variable
3236 should be used in makefiles.
3238 installvendorscript (vendorscript.U):
3239 This variable is really the same as vendorscriptexp but may differ on
3240 those systems using AFS. For extra portability, only this variable
3241 should be used in makefiles.
3243 intsize (intsize.U):
3244 This variable contains the value of the INTSIZE symbol, which
3245 indicates to the C program how many bytes there are in an int.
3247 issymlink (issymlink.U):
3248 This variable holds the test command to test for a symbolic link
3249 (if they are supported). Typical values include 'test -h' and
3252 ivdformat (perlxvf.U):
3253 This variable contains the format string used for printing
3254 a Perl IV as a signed decimal integer.
3257 This variable is the size of an IV in bytes.
3260 This variable contains the C type used for Perl's IV.
3262 known_extensions (Extensions.U):
3263 This variable holds a list of all XS extensions included in
3267 This variable is defined but not used by Configure.
3268 The value is a plain '' and is not useful.
3271 This variable indicates the program to be used to link
3272 libraries for dynamic loading. On some systems, it is 'ld'.
3273 On ELF systems, it should be $cc. Mostly, we'll try to respect
3274 the hint file setting.
3276 lddlflags (dlsrc.U):
3277 This variable contains any special flags that might need to be
3278 passed to $ld to create a shared library suitable for dynamic
3279 loading. It is up to the makefile to use it. For hpux, it
3280 should be '-b'. For sunos 4.1, it is empty.
3282 ldflags (ccflags.U):
3283 This variable contains any additional C loader flags desired by
3284 the user. It is up to the Makefile to use this.
3286 ldflags_uselargefiles (uselfs.U):
3287 This variable contains the loader flags needed by large file builds
3288 and added to ldflags by hints files.
3290 ldlibpthname (libperl.U):
3291 This variable holds the name of the shared library
3292 search path, often LD_LIBRARY_PATH. To get an empty
3293 string, the hints file must set this to 'none'.
3296 This variable is used internally by Configure to determine the
3297 full pathname (if any) of the less program. After Configure runs,
3298 the value is reset to a plain "less" and is not useful.
3301 This is an old synonym for _a.
3304 This variable contains the location of the C library.
3306 libperl (libperl.U):
3307 The perl executable is obtained by linking perlmain.c with
3308 libperl, any static extensions (usually just DynaLoader),
3309 and any other libraries needed on this system. libperl
3310 is usually libperl.a, but can also be libperl.so.xxx if
3311 the user wishes to build a perl executable with a shared
3315 This variable holds the general path (space-separated) used to find
3316 libraries. It is intended to be used by other units.
3319 This variable holds the additional libraries we want to use.
3320 It is up to the Makefile to deal with it. The list can be empty.
3323 This variable holds the directory names aka dirnames of the libraries
3324 we found and accepted, duplicates are removed.
3327 This variable holds the filenames aka basenames of the libraries
3328 we found and accepted.
3331 This variable holds the full pathnames of the libraries
3332 we found and accepted.
3335 This variable holds the directory names probed for libraries.
3337 libswanted (Myinit.U):
3338 This variable holds a list of all the libraries we want to
3339 search. The order is chosen to pick up the c library
3340 ahead of ucb or bsd libraries for SVR4.
3342 libswanted_uselargefiles (uselfs.U):
3343 This variable contains the libraries needed by large file builds
3344 and added to ldflags by hints files. It is a space separated list
3345 of the library names without the "lib" prefix or any suffix, just
3349 This variable is defined but not used by Configure.
3350 The value is a plain '' and is not useful.
3353 This variable is defined but not used by Configure.
3354 The value is a plain '' and is not useful.
3356 lkflags (ccflags.U):
3357 This variable contains any additional C partial linker flags desired by
3358 the user. It is up to the Makefile to use this.
3361 This variable is used internally by Configure to determine the
3362 full pathname (if any) of the ln program. After Configure runs,
3363 the value is reset to a plain "ln" and is not useful.
3366 This variable holds the name of the command to make
3367 symbolic links (if they are supported). It can be used
3368 in the Makefile. It is either 'ln -s' or 'ln'
3370 localtime_r_proto (d_localtime_r.U):
3371 This variable encodes the prototype of localtime_r.
3372 It is zero if d_localtime_r is undef, and one of the
3373 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3376 locincpth (ccflags.U):
3377 This variable contains a list of additional directories to be
3378 searched by the compiler. The appropriate '-I' directives will
3379 be added to ccflags. This is intended to simplify setting
3380 local directories from the Configure command line.
3381 It's not much, but it parallels the loclibpth stuff in libpth.U.
3383 loclibpth (libpth.U):
3384 This variable holds the paths (space-separated) used to find local
3385 libraries. It is prepended to libpth, and is intended to be easily
3386 set from the command line.
3388 longdblsize (d_longdbl.U):
3389 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3390 indicates to the C program how many bytes there are in a long double,
3391 if this system supports long doubles.
3393 longlongsize (d_longlong.U):
3394 This variable contains the value of the LONGLONGSIZE symbol, which
3395 indicates to the C program how many bytes there are in a long long,
3396 if this system supports long long.
3398 longsize (intsize.U):
3399 This variable contains the value of the LONGSIZE symbol, which
3400 indicates to the C program how many bytes there are in a long.
3403 This variable is defined but not used by Configure.
3404 The value is a plain '' and is not useful.
3407 This variable is defined but not used by Configure.
3408 The value is a plain '' and is not useful.
3411 This variable is used internally by Configure to determine the
3412 full pathname (if any) of the ls program. After Configure runs,
3413 the value is reset to a plain "ls" and is not useful.
3415 lseeksize (lseektype.U):
3416 This variable defines lseektype to be something like off_t, long,
3417 or whatever type is used to declare lseek offset's type in the
3418 kernel (which also appears to be lseek's return type).
3420 lseektype (lseektype.U):
3421 This variable defines lseektype to be something like off_t, long,
3422 or whatever type is used to declare lseek offset's type in the
3423 kernel (which also appears to be lseek's return type).
3426 This variable is defined but not used by Configure.
3427 The value is a plain '' and is not useful.
3430 This variable is defined but not used by Configure.
3431 The value is a plain '' and is not useful.
3434 This variable is used internally by Configure to determine the
3435 full pathname (if any) of the make program. After Configure runs,
3436 the value is reset to a plain "make" and is not useful.
3438 make_set_make (make.U):
3439 Some versions of 'make' set the variable MAKE. Others do not.
3440 This variable contains the string to be included in Makefile.SH
3441 so that MAKE is set if needed, and not if not needed.
3442 Possible values are:
3444 make_set_make='#' # If your make program handles this for you,
3446 make_set_make="MAKE=$make" # if it doesn't.
3448 This uses a comment character to distinguish a
3449 'set' value (from a previous config.sh or Configure '-D' option)
3450 from an uncomputed value.
3452 mallocobj (mallocsrc.U):
3453 This variable contains the name of the malloc.o that this package
3454 generates, if that malloc.o is preferred over the system malloc.
3455 Otherwise the value is null. This variable is intended for generating
3456 Makefiles. See mallocsrc.
3458 mallocsrc (mallocsrc.U):
3459 This variable contains the name of the malloc.c that comes with
3460 the package, if that malloc.c is preferred over the system malloc.
3461 Otherwise the value is null. This variable is intended for generating
3464 malloctype (mallocsrc.U):
3465 This variable contains the kind of ptr returned by malloc and realloc.
3467 man1dir (man1dir.U):
3468 This variable contains the name of the directory in which manual
3469 source pages are to be put. It is the responsibility of the
3470 Makefile.SH to get the value of this into the proper command.
3471 You must be prepared to do the ~name expansion yourself.
3473 man1direxp (man1dir.U):
3474 This variable is the same as the man1dir variable, but is filename
3475 expanded at configuration time, for convenient use in makefiles.
3477 man1ext (man1dir.U):
3478 This variable contains the extension that the manual page should
3479 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3482 man3dir (man3dir.U):
3483 This variable contains the name of the directory in which manual
3484 source pages are to be put. It is the responsibility of the
3485 Makefile.SH to get the value of this into the proper command.
3486 You must be prepared to do the ~name expansion yourself.
3488 man3direxp (man3dir.U):
3489 This variable is the same as the man3dir variable, but is filename
3490 expanded at configuration time, for convenient use in makefiles.
3492 man3ext (man3dir.U):
3493 This variable contains the extension that the manual page should
3494 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3498 This variable is used internally by Configure to determine the
3499 full pathname (if any) of the Mcc program. After Configure runs,
3500 the value is reset to a plain "Mcc" and is not useful.
3502 mips_type (usrinc.U):
3503 This variable holds the environment type for the mips system.
3504 Possible values are "BSD 4.3" and "System V".
3507 This variable is used internally by Configure to determine the
3508 full pathname (if any) of the mkdir program. After Configure runs,
3509 the value is reset to a plain "mkdir" and is not useful.
3511 mmaptype (d_mmap.U):
3512 This symbol contains the type of pointer returned by mmap()
3513 (and simultaneously the type of the first argument).
3514 It can be 'void *' or 'caddr_t'.
3516 modetype (modetype.U):
3517 This variable defines modetype to be something like mode_t,
3518 int, unsigned short, or whatever type is used to declare file
3519 modes for system calls.
3522 This variable is used internally by Configure to determine the
3523 full pathname (if any) of the more program. After Configure runs,
3524 the value is reset to a plain "more" and is not useful.
3526 multiarch (multiarch.U):
3527 This variable conditionally defines the MULTIARCH symbol
3528 which signifies the presence of multiplatform files.
3529 This is normally set by hints files.
3532 This variable is defined but not used by Configure.
3533 The value is a plain '' and is not useful.
3535 myarchname (archname.U):
3536 This variable holds the architecture name computed by Configure in
3537 a previous run. It is not intended to be perused by any user and
3538 should never be set in a hint file.
3540 mydomain (myhostname.U):
3541 This variable contains the eventual value of the MYDOMAIN symbol,
3542 which is the domain of the host the program is going to run on.
3543 The domain must be appended to myhostname to form a complete host name.
3544 The dot comes with mydomain, and need not be supplied by the program.
3546 myhostname (myhostname.U):
3547 This variable contains the eventual value of the MYHOSTNAME symbol,
3548 which is the name of the host the program is going to run on.
3549 The domain is not kept with hostname, but must be gotten from mydomain.
3550 The dot comes with mydomain, and need not be supplied by the program.
3552 myuname (Oldconfig.U):
3553 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3554 pseudo variables assignments in the output are stripped, thank you. The
3555 whole thing is then lower-cased.
3558 This variable contains the '-n' flag if that is what causes the echo
3559 command to suppress newline. Otherwise it is null. Correct usage is
3560 $echo $n "prompt for a question: $c".
3562 need_va_copy (need_va_copy.U):
3563 This symbol, if defined, indicates that the system stores
3564 the variable argument list datatype, va_list, in a format
3565 that cannot be copied by simple assignment, so that some
3566 other means must be used when copying is required.
3567 As such systems vary in their provision (or non-provision)
3568 of copying mechanisms, handy.h defines a platform-
3569 independent macro, Perl_va_copy(src, dst), to do the job.
3571 netdb_hlen_type (netdbtype.U):
3572 This variable holds the type used for the 2nd argument to
3573 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3574 This is only useful if you have gethostbyaddr(), naturally.
3576 netdb_host_type (netdbtype.U):
3577 This variable holds the type used for the 1st argument to
3578 gethostbyaddr(). Usually, this is char * or void *, possibly
3579 with or without a const prefix.
3580 This is only useful if you have gethostbyaddr(), naturally.
3582 netdb_name_type (netdbtype.U):
3583 This variable holds the type used for the argument to
3584 gethostbyname(). Usually, this is char * or const char *.
3585 This is only useful if you have gethostbyname(), naturally.
3587 netdb_net_type (netdbtype.U):
3588 This variable holds the type used for the 1st argument to
3589 getnetbyaddr(). Usually, this is int or long.
3590 This is only useful if you have getnetbyaddr(), naturally.
3593 This variable is used internally by Configure to determine the
3594 full pathname (if any) of the nm program. After Configure runs,
3595 the value is reset to a plain "nm" and is not useful.
3598 This variable holds the options that may be necessary for nm.
3600 nm_so_opt (usenm.U):
3601 This variable holds the options that may be necessary for nm
3602 to work on a shared library but that can not be used on an
3603 archive library. Currently, this is only used by Linux, where
3604 nm --dynamic is *required* to get symbols from an ELF library which
3605 has been stripped, but nm --dynamic is *fatal* on an archive library.
3606 Maybe Linux should just always set usenm=false.
3608 nonxs_ext (Extensions.U):
3609 This variable holds a list of all non-xs extensions included
3610 in the package. All of them will be built.
3613 This variable is used internally by Configure to determine the
3614 full pathname (if any) of the nroff program. After Configure runs,
3615 the value is reset to a plain "nroff" and is not useful.
3617 nv_preserves_uv_bits (perlxv.U):
3618 This variable indicates how many of bits type uvtype
3619 a variable nvtype can preserve.
3621 nveformat (perlxvf.U):
3622 This variable contains the format string used for printing
3623 a Perl NV using %e-ish floating point format.
3625 nvEUformat (perlxvf.U):
3626 This variable contains the format string used for printing
3627 a Perl NV using %E-ish floating point format.
3629 nvfformat (perlxvf.U):
3630 This variable confains the format string used for printing
3631 a Perl NV using %f-ish floating point format.
3633 nvFUformat (perlxvf.U):
3634 This variable confains the format string used for printing
3635 a Perl NV using %F-ish floating point format.
3637 nvgformat (perlxvf.U):
3638 This variable contains the format string used for printing
3639 a Perl NV using %g-ish floating point format.
3641 nvGUformat (perlxvf.U):
3642 This variable contains the format string used for printing
3643 a Perl NV using %G-ish floating point format.
3646 This variable is the size of an NV in bytes.
3649 This variable contains the C type used for Perl's NV.
3651 o_nonblock (nblock_io.U):
3652 This variable bears the symbol value to be used during open() or fcntl()
3653 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3654 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3655 but that is only supported by some devices.
3658 This is an old synonym for _o.
3660 old_pthread_create_joinable (d_pthrattrj.U):
3661 This variable defines the constant to use for creating joinable
3662 (aka undetached) pthreads. Unused if pthread.h defines
3663 PTHREAD_CREATE_JOINABLE. If used, possible values are
3664 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3666 optimize (ccflags.U):
3667 This variable contains any optimizer/debugger flag that should be used.
3668 It is up to the Makefile to use it.
3670 orderlib (orderlib.U):
3671 This variable is "true" if the components of libraries must be ordered
3672 (with `lorder $* | tsort`) before placing them in an archive. Set to
3673 "false" if ranlib or ar can generate random libraries.
3675 osname (Oldconfig.U):
3676 This variable contains the operating system name (e.g. sunos,
3677 solaris, hpux, etc.). It can be useful later on for setting
3678 defaults. Any spaces are replaced with underscores. It is set
3679 to a null string if we can't figure it out.
3681 osvers (Oldconfig.U):
3682 This variable contains the operating system version (e.g.
3683 4.1.3, 5.2, etc.). It is primarily used for helping select
3684 an appropriate hints file, but might be useful elsewhere for
3685 setting defaults. It is set to '' if we can't figure it out.
3686 We try to be flexible about how much of the version number
3687 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3688 same for this package, hints files might just be os_4.0 or
3689 os_4.1, etc., not keeping separate files for each little release.
3691 otherlibdirs (otherlibdirs.U):
3692 This variable contains a colon-separated set of paths for the perl
3693 binary to search for additional library files or modules.
3694 These directories will be tacked to the end of @INC.
3695 Perl will automatically search below each path for version-
3696 and architecture-specific directories. See inc_version_list
3698 A value of ' ' means 'none' and is used to preserve this value
3699 for the next run through Configure.
3701 package (package.U):
3702 This variable contains the name of the package being constructed.
3703 It is primarily intended for the use of later Configure units.
3706 This variable contains the name of the preferred pager on the system.
3707 Usual values are (the full pathnames of) more, less, pg, or cat.
3710 This variable contains a command that produces the text of the
3711 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3712 "ypcat passwd" when NIS is used.
3713 On some systems, such as os390, there may be no equivalent
3714 command, in which case this variable is unset.
3716 patchlevel (patchlevel.U):
3717 The patchlevel level of this package.
3718 The value of patchlevel comes from the patchlevel.h file.
3719 In a version number such as 5.6.1, this is the "6".
3720 In patchlevel.h, this is referred to as "PERL_VERSION".
3723 This is an old synonym for p_ in Head.U, the character
3724 used to separate elements in the command shell search PATH.
3727 This variable contains the full path (if any) to a previously
3728 installed perl5.005 or later suitable for running the script
3729 to determine inc_version_list.
3732 This variable is defined but not used by Configure.
3733 The value is a plain '' and is not useful.
3735 perl_patchlevel (patchlevel.U):
3736 This is the Perl patch level, a numeric change identifier,
3737 as defined by whichever source code maintenance system
3738 is used to maintain the patches; currently Perforce.
3739 It does not correlate with the Perl version numbers or
3740 the maintenance versus development dichotomy except
3741 by also being increasing.
3743 PERL_REVISION (Oldsyms.U):
3744 In a Perl version number such as 5.6.2, this is the 5.
3745 This value is manually set in patchlevel.h
3747 PERL_SUBVERSION (Oldsyms.U):
3748 In a Perl version number such as 5.6.2, this is the 2.
3749 Values greater than 50 represent potentially unstable
3750 development subversions.
3751 This value is manually set in patchlevel.h
3753 PERL_VERSION (Oldsyms.U):
3754 In a Perl version number such as 5.6.2, this is the 6.
3755 This value is manually set in patchlevel.h
3757 perladmin (perladmin.U):
3758 Electronic mail address of the perl5 administrator.
3761 The list of libraries needed by Perl only (any libraries needed
3762 by extensions only will by dropped, if using dynamic loading).
3764 perlpath (perlpath.U):
3765 This variable contains the eventual value of the PERLPATH symbol,
3766 which contains the name of the perl interpreter to be used in
3767 shell scripts and in the "eval 'exec'" idiom. This variable is
3768 not necessarily the pathname of the file containing the perl
3769 interpreter; you must append the executable extension (_exe) if
3770 it is not already present. Note that Perl code that runs during
3771 the Perl build process cannot reference this variable, as Perl
3772 may not have been installed, or even if installed, may be a
3773 different version of Perl.
3776 This variable is used internally by Configure to determine the
3777 full pathname (if any) of the pg program. After Configure runs,
3778 the value is reset to a plain "pg" and is not useful.
3780 phostname (myhostname.U):
3781 This variable contains the eventual value of the PHOSTNAME symbol,
3782 which is a command that can be fed to popen() to get the host name.
3783 The program should probably not presume that the domain is or isn't
3786 pidtype (pidtype.U):
3787 This variable defines PIDTYPE to be something like pid_t, int,
3788 ushort, or whatever type is used to declare process ids in the kernel.
3791 Holds the private path used by Configure to find out the libraries.
3792 Its value is prepend to libpth. This variable takes care of special
3793 machines, like the mips. Usually, it should be empty.
3795 pm_apiversion (xs_apiversion.U):
3796 This variable contains the version of the oldest perl
3797 compatible with the present perl. (That is, pure perl modules
3798 written for $pm_apiversion will still work for the current
3799 version). perl.c:incpush() and lib/lib.pm will automatically
3800 search in $sitelib for older directories across major versions
3801 back to pm_apiversion. This is only useful if you have a perl
3802 library directory tree structured like the default one. The
3803 versioned site_perl library was introduced in 5.005, so that's
3804 the default setting for this variable. It's hard to imagine
3805 it changing before Perl6. It is included here for symmetry
3806 with xs_apiveprsion -- the searching algorithms will
3807 (presumably) be similar.
3808 See the INSTALL file for how this works.
3811 This variable is defined but not used by Configure.
3812 The value is a plain '' and is not useful.
3815 This variable is defined but not used by Configure.
3816 The value is a plain '' and is not useful.
3819 This variable holds the name of the directory below which the
3820 user will install the package. Usually, this is /usr/local, and
3821 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3822 man pages in /usr/local/man, etc. It is only used to set defaults
3823 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3825 prefixexp (prefix.U):
3826 This variable holds the full absolute path of the directory below
3827 which the user will install the package. Derived from prefix.
3829 privlib (privlib.U):
3830 This variable contains the eventual value of the PRIVLIB symbol,
3831 which is the name of the private library for this package. It may
3832 have a ~ on the front. It is up to the makefile to eventually create
3833 this directory while performing installation (with ~ substitution).
3835 privlibexp (privlib.U):
3836 This variable is the ~name expanded version of privlib, so that you
3837 may use it directly in Makefiles or shell scripts.
3839 procselfexe (d_procselfexe.U):
3840 If d_procselfexe is defined, $procselfexe is the filename
3841 of the symbolic link pointing to the absolute pathname of
3842 the executing program.
3844 prototype (prototype.U):
3845 This variable holds the eventual value of CAN_PROTOTYPE, which
3846 indicates the C compiler can handle funciton prototypes.
3848 ptrsize (ptrsize.U):
3849 This variable contains the value of the PTRSIZE symbol, which
3850 indicates to the C program how many bytes there are in a pointer.
3852 quadkind (quadtype.U):
3853 This variable, if defined, encodes the type of a quad:
3854 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3856 quadtype (quadtype.U):
3857 This variable defines Quad_t to be something like long, int,
3858 long long, int64_t, or whatever type is used for 64-bit integers.
3860 randbits (randfunc.U):
3861 Indicates how many bits are produced by the function used to
3862 generate normalized random numbers.
3864 randfunc (randfunc.U):
3865 Indicates the name of the random number function to use.
3866 Values include drand48, random, and rand. In C programs,
3867 the 'Drand01' macro is defined to generate uniformly distributed
3868 random numbers over the range [0., 1.[ (see drand01 and nrand).
3870 random_r_proto (d_random_r.U):
3871 This variable encodes the prototype of random_r.
3872 It is zero if d_random_r is undef, and one of the
3873 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
3876 randseedtype (randfunc.U):
3877 Indicates the type of the argument of the seedfunc.
3879 ranlib (orderlib.U):
3880 This variable is set to the pathname of the ranlib program, if it is
3881 needed to generate random libraries. Set to ":" if ar can generate
3882 random libraries or if random libraries are not supported
3884 rd_nodata (nblock_io.U):
3885 This variable holds the return code from read() when no data is
3886 present. It should be -1, but some systems return 0 when O_NDELAY is
3887 used, which is a shame because you cannot make the difference between
3888 no data and an EOF.. Sigh!
3890 readdir64_r_proto (d_readdir64_r.U):
3891 This variable encodes the prototype of readdir64_r.
3892 It is zero if d_readdir64_r is undef, and one of the
3893 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
3896 readdir_r_proto (d_readdir_r.U):
3897 This variable encodes the prototype of readdir_r.
3898 It is zero if d_readdir_r is undef, and one of the
3899 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
3902 revision (patchlevel.U):
3903 The value of revision comes from the patchlevel.h file.
3904 In a version number such as 5.6.1, this is the "5".
3905 In patchlevel.h, this is referred to as "PERL_REVISION".
3908 This variable is used internally by Configure to determine the
3909 full pathname (if any) of the rm program. After Configure runs,
3910 the value is reset to a plain "rm" and is not useful.
3913 This variable is defined but not used by Configure.
3914 The value is a plain '' and is not useful.
3917 This variable contains the command used by Configure
3918 to copy and execute a cross-compiled executable in the
3919 target host. Useful and available only during Perl build.
3920 Empty string '' if not cross-compiling.
3923 This variable contains 'true' or 'false' depending whether the
3924 nm extraction should be performed or not, according to the value
3925 of usenm and the flags on the Configure command line.
3927 sched_yield (d_pthread_y.U):
3928 This variable defines the way to yield the execution
3929 of the current thread.
3931 scriptdir (scriptdir.U):
3932 This variable holds the name of the directory in which the user wants
3933 to put publicly scripts for the package in question. It is either
3934 the same directory as for binaries, or a special one that can be
3935 mounted across different architectures, like /usr/share. Programs
3936 must be prepared to deal with ~name expansion.
3938 scriptdirexp (scriptdir.U):
3939 This variable is the same as scriptdir, but is filename expanded
3940 at configuration time, for programs not wanting to bother with it.
3943 This variable is used internally by Configure to determine the
3944 full pathname (if any) of the sed program. After Configure runs,
3945 the value is reset to a plain "sed" and is not useful.
3947 seedfunc (randfunc.U):
3948 Indicates the random number generating seed function.
3949 Values include srand48, srandom, and srand.
3951 selectminbits (selectminbits.U):
3952 This variable holds the minimum number of bits operated by select.
3953 That is, if you do select(n, ...), how many bits at least will be
3954 cleared in the masks if some activity is detected. Usually this
3955 is either n or 32*ceil(n/32), especially many little-endians do
3956 the latter. This is only useful if you have select(), naturally.
3958 selecttype (selecttype.U):
3959 This variable holds the type used for the 2nd, 3rd, and 4th
3960 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3961 is defined, and 'int *' otherwise. This is only useful if you
3962 have select(), naturally.
3965 This variable is defined but not used by Configure.
3966 The value is a plain '' and is not useful.
3968 setgrent_r_proto (d_setgrent_r.U):
3969 This variable encodes the prototype of setgrent_r.
3970 It is zero if d_setgrent_r is undef, and one of the
3971 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
3974 sethostent_r_proto (d_sethostent_r.U):
3975 This variable encodes the prototype of sethostent_r.
3976 It is zero if d_sethostent_r is undef, and one of the
3977 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
3980 setlocale_r_proto (d_setlocale_r.U):
3981 This variable encodes the prototype of setlocale_r.
3982 It is zero if d_setlocale_r is undef, and one of the
3983 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
3986 setnetent_r_proto (d_setnetent_r.U):
3987 This variable encodes the prototype of setnetent_r.
3988 It is zero if d_setnetent_r is undef, and one of the
3989 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
3992 setprotoent_r_proto (d_setprotoent_r.U):
3993 This variable encodes the prototype of setprotoent_r.
3994 It is zero if d_setprotoent_r is undef, and one of the
3995 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
3998 setpwent_r_proto (d_setpwent_r.U):
3999 This variable encodes the prototype of setpwent_r.
4000 It is zero if d_setpwent_r is undef, and one of the
4001 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4004 setservent_r_proto (d_setservent_r.U):
4005 This variable encodes the prototype of setservent_r.
4006 It is zero if d_setservent_r is undef, and one of the
4007 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4011 This variable contains the full pathname of the shell used
4012 on this system to execute Bourne shell scripts. Usually, this will be
4013 /bin/sh, though it's possible that some systems will have /bin/ksh,
4014 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4016 This unit comes before Options.U, so you can't set sh with a '-D'
4017 option, though you can override this (and startsh)
4018 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4021 This variable is defined but not used by Configure.
4022 The value is a plain '' and is not useful.
4024 sharpbang (spitshell.U):
4025 This variable contains the string #! if this system supports that
4028 shmattype (d_shmat.U):
4029 This symbol contains the type of pointer returned by shmat().
4030 It can be 'void *' or 'char *'.
4032 shortsize (intsize.U):
4033 This variable contains the value of the SHORTSIZE symbol which
4034 indicates to the C program how many bytes there are in a short.
4036 shrpenv (libperl.U):
4037 If the user builds a shared libperl.so, then we need to tell the
4038 'perl' executable where it will be able to find the installed libperl.so.
4039 One way to do this on some systems is to set the environment variable
4040 LD_RUN_PATH to the directory that will be the final location of the
4041 shared libperl.so. The makefile can use this with something like
4042 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4044 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4047 See the main perl Makefile.SH for actual working usage.
4048 Alternatively, we might be able to use a command line option such
4049 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4050 $archlibexp/CORE (Linux).
4052 shsharp (spitshell.U):
4053 This variable tells further Configure units whether your sh can
4056 sig_count (sig_name.U):
4057 This variable holds a number larger than the largest valid
4058 signal number. This is usually the same as the NSIG macro.
4060 sig_name (sig_name.U):
4061 This variable holds the signal names, space separated. The leading
4062 SIG in signal name is removed. A ZERO is prepended to the list.
4063 This is currently not used, sig_name_init is used instead.
4065 sig_name_init (sig_name.U):
4066 This variable holds the signal names, enclosed in double quotes and
4067 separated by commas, suitable for use in the SIG_NAME definition
4068 below. A "ZERO" is prepended to the list, and the list is
4069 terminated with a plain 0. The leading SIG in signal names
4070 is removed. See sig_num.
4072 sig_num (sig_name.U):
4073 This variable holds the signal numbers, space separated. A ZERO is
4074 prepended to the list (corresponding to the fake SIGZERO).
4075 Those numbers correspond to the value of the signal listed
4076 in the same place within the sig_name list.
4077 This is currently not used, sig_num_init is used instead.
4079 sig_num_init (sig_name.U):
4080 This variable holds the signal numbers, enclosed in double quotes and
4081 separated by commas, suitable for use in the SIG_NUM definition
4082 below. A "ZERO" is prepended to the list, and the list is
4083 terminated with a plain 0.
4085 sig_size (sig_name.U):
4086 This variable contains the number of elements of the sig_name
4089 signal_t (d_voidsig.U):
4090 This variable holds the type of the signal handler (void or int).
4092 sitearch (sitearch.U):
4093 This variable contains the eventual value of the SITEARCH symbol,
4094 which is the name of the private library for this package. It may
4095 have a ~ on the front. It is up to the makefile to eventually create
4096 this directory while performing installation (with ~ substitution).
4097 The standard distribution will put nothing in this directory.
4098 After perl has been installed, users may install their own local
4099 architecture-dependent modules in this directory with
4100 MakeMaker Makefile.PL
4101 or equivalent. See INSTALL for details.
4103 sitearchexp (sitearch.U):
4104 This variable is the ~name expanded version of sitearch, so that you
4105 may use it directly in Makefiles or shell scripts.
4107 sitebin (sitebin.U):
4108 This variable holds the name of the directory in which the user wants
4109 to put add-on publicly executable files for the package in question. It
4110 is most often a local directory such as /usr/local/bin. Programs using
4111 this variable must be prepared to deal with ~name substitution.
4112 The standard distribution will put nothing in this directory.
4113 After perl has been installed, users may install their own local
4114 executables in this directory with
4115 MakeMaker Makefile.PL
4116 or equivalent. See INSTALL for details.
4118 sitebinexp (sitebin.U):
4119 This is the same as the sitebin variable, but is filename expanded at
4120 configuration time, for use in your makefiles.
4122 sitehtml1 (sitehtml1.U):
4123 This variable contains the name of the directory in which site-specific
4124 html source pages are to be put. It is the responsibility of the
4125 Makefile.SH to get the value of this into the proper command.
4126 You must be prepared to do the ~name expansion yourself.
4127 The standard distribution will put nothing in this directory.
4128 After perl has been installed, users may install their own local
4129 html pages in this directory with
4130 MakeMaker Makefile.PL
4131 or equivalent. See INSTALL for details.
4133 sitehtml1exp (sitehtml1.U):
4134 This variable is the same as the sitehtml1 variable, but is filename
4135 expanded at configuration time, for convenient use in makefiles.
4137 sitehtml3 (sitehtml3.U):
4138 This variable contains the name of the directory in which site-specific
4139 library html source pages are to be put. It is the responsibility of the
4140 Makefile.SH to get the value of this into the proper command.
4141 You must be prepared to do the ~name expansion yourself.
4142 The standard distribution will put nothing in this directory.
4143 After perl has been installed, users may install their own local
4144 library html pages in this directory with
4145 MakeMaker Makefile.PL
4146 or equivalent. See INSTALL for details.
4148 sitehtml3exp (sitehtml3.U):
4149 This variable is the same as the sitehtml3 variable, but is filename
4150 expanded at configuration time, for convenient use in makefiles.
4152 sitelib (sitelib.U):
4153 This variable contains the eventual value of the SITELIB symbol,
4154 which is the name of the private library for this package. It may
4155 have a ~ on the front. It is up to the makefile to eventually create
4156 this directory while performing installation (with ~ substitution).
4157 The standard distribution will put nothing in this directory.
4158 After perl has been installed, users may install their own local
4159 architecture-independent modules in this directory with
4160 MakeMaker Makefile.PL
4161 or equivalent. See INSTALL for details.
4163 sitelib_stem (sitelib.U):
4164 This variable is $sitelibexp with any trailing version-specific component
4165 removed. The elements in inc_version_list (inc_version_list.U) can
4166 be tacked onto this variable to generate a list of directories to search.
4168 sitelibexp (sitelib.U):
4169 This variable is the ~name expanded version of sitelib, so that you
4170 may use it directly in Makefiles or shell scripts.
4172 siteman1 (siteman1.U):
4173 This variable contains the name of the directory in which site-specific
4174 manual source pages are to be put. It is the responsibility of the
4175 Makefile.SH to get the value of this into the proper command.
4176 You must be prepared to do the ~name expansion yourself.
4177 The standard distribution will put nothing in this directory.
4178 After perl has been installed, users may install their own local
4179 man1 pages in this directory with
4180 MakeMaker Makefile.PL
4181 or equivalent. See INSTALL for details.
4183 siteman1exp (siteman1.U):
4184 This variable is the same as the siteman1 variable, but is filename
4185 expanded at configuration time, for convenient use in makefiles.
4187 siteman3 (siteman3.U):
4188 This variable contains the name of the directory in which site-specific
4189 library man source pages are to be put. It is the responsibility of the
4190 Makefile.SH to get the value of this into the proper command.
4191 You must be prepared to do the ~name expansion yourself.
4192 The standard distribution will put nothing in this directory.
4193 After perl has been installed, users may install their own local
4194 man3 pages in this directory with
4195 MakeMaker Makefile.PL
4196 or equivalent. See INSTALL for details.
4198 siteman3exp (siteman3.U):
4199 This variable is the same as the siteman3 variable, but is filename
4200 expanded at configuration time, for convenient use in makefiles.
4202 siteprefix (siteprefix.U):
4203 This variable holds the full absolute path of the directory below
4204 which the user will install add-on packages.
4205 See INSTALL for usage and examples.
4207 siteprefixexp (siteprefix.U):
4208 This variable holds the full absolute path of the directory below
4209 which the user will install add-on packages. Derived from siteprefix.
4211 sitescript (sitescript.U):
4212 This variable holds the name of the directory in which the user wants
4213 to put add-on publicly executable files for the package in question. It
4214 is most often a local directory such as /usr/local/bin. Programs using
4215 this variable must be prepared to deal with ~name substitution.
4216 The standard distribution will put nothing in this directory.
4217 After perl has been installed, users may install their own local
4218 scripts in this directory with
4219 MakeMaker Makefile.PL
4220 or equivalent. See INSTALL for details.
4222 sitescriptexp (sitescript.U):
4223 This is the same as the sitescript variable, but is filename expanded at
4224 configuration time, for use in your makefiles.
4226 sizesize (sizesize.U):
4227 This variable contains the size of a sizetype in bytes.
4229 sizetype (sizetype.U):
4230 This variable defines sizetype to be something like size_t,
4231 unsigned long, or whatever type is used to declare length
4232 parameters for string functions.
4235 This variable is defined but not used by Configure.
4236 The value is a plain '' and is not useful.
4239 This variable is defined but not used by Configure.
4240 The value is a plain '' and is not useful.
4243 This variable holds the extension used to identify shared libraries
4244 (also known as shared objects) on the system. Usually set to 'so'.
4246 sockethdr (d_socket.U):
4247 This variable has any cpp '-I' flags needed for socket support.
4249 socketlib (d_socket.U):
4250 This variable has the names of any libraries needed for socket support.
4252 socksizetype (socksizetype.U):
4253 This variable holds the type used for the size argument
4254 for various socket calls like accept. Usual values include
4255 socklen_t, size_t, and int.
4258 This variable is used internally by Configure to determine the
4259 full pathname (if any) of the sort program. After Configure runs,
4260 the value is reset to a plain "sort" and is not useful.
4262 spackage (package.U):
4263 This variable contains the name of the package being constructed,
4264 with the first letter uppercased, i.e. suitable for starting
4267 spitshell (spitshell.U):
4268 This variable contains the command necessary to spit out a runnable
4269 shell on this system. It is either cat or a grep '-v' for # comments.
4271 sPRId64 (quadfio.U):
4272 This variable, if defined, contains the string used by stdio to
4273 format 64-bit decimal numbers (format 'd') for output.
4275 sPRIeldbl (longdblfio.U):
4276 This variable, if defined, contains the string used by stdio to
4277 format long doubles (format 'e') for output.
4279 sPRIEUldbl (longdblfio.U):
4280 This variable, if defined, contains the string used by stdio to
4281 format long doubles (format 'E') for output.
4282 The 'U' in the name is to separate this from sPRIeldbl so that even
4283 case-blind systems can see the difference.
4285 sPRIfldbl (longdblfio.U):
4286 This variable, if defined, contains the string used by stdio to
4287 format long doubles (format 'f') for output.
4289 sPRIFUldbl (longdblfio.U):
4290 This variable, if defined, contains the string used by stdio to
4291 format long doubles (format 'F') for output.
4292 The 'U' in the name is to separate this from sPRIfldbl so that even
4293 case-blind systems can see the difference.
4295 sPRIgldbl (longdblfio.U):
4296 This variable, if defined, contains the string used by stdio to
4297 format long doubles (format 'g') for output.
4299 sPRIGUldbl (longdblfio.U):
4300 This variable, if defined, contains the string used by stdio to
4301 format long doubles (format 'G') for output.
4302 The 'U' in the name is to separate this from sPRIgldbl so that even
4303 case-blind systems can see the difference.
4305 sPRIi64 (quadfio.U):
4306 This variable, if defined, contains the string used by stdio to
4307 format 64-bit decimal numbers (format 'i') for output.
4309 sPRIo64 (quadfio.U):
4310 This variable, if defined, contains the string used by stdio to
4311 format 64-bit octal numbers (format 'o') for output.
4313 sPRIu64 (quadfio.U):
4314 This variable, if defined, contains the string used by stdio to
4315 format 64-bit unsigned decimal numbers (format 'u') for output.
4317 sPRIx64 (quadfio.U):
4318 This variable, if defined, contains the string used by stdio to
4319 format 64-bit hexadecimal numbers (format 'x') for output.
4321 sPRIXU64 (quadfio.U):
4322 This variable, if defined, contains the string used by stdio to
4323 format 64-bit hExADECimAl numbers (format 'X') for output.
4324 The 'U' in the name is to separate this from sPRIx64 so that even
4325 case-blind systems can see the difference.
4327 srand48_r_proto (d_srand48_r.U):
4328 This variable encodes the prototype of srand48_r.
4329 It is zero if d_srand48_r is undef, and one of the
4330 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4333 srandom_r_proto (d_srandom_r.U):
4334 This variable encodes the prototype of srandom_r.
4335 It is zero if d_srandom_r is undef, and one of the
4336 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4340 This variable holds the path to the package source. It is up to
4341 the Makefile to use this variable and set VPATH accordingly to
4342 find the sources remotely.
4344 sSCNfldbl (longdblfio.U):
4345 This variable, if defined, contains the string used by stdio to
4346 format long doubles (format 'f') for input.
4348 ssizetype (ssizetype.U):
4349 This variable defines ssizetype to be something like ssize_t,
4350 long or int. It is used by functions that return a count
4351 of bytes or an error condition. It must be a signed type.
4352 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4354 startperl (startperl.U):
4355 This variable contains the string to put on the front of a perl
4356 script to make sure (hopefully) that it runs with perl and not some
4357 shell. Of course, that leading line must be followed by the classical
4359 eval 'exec perl -S $0 ${1+"$@"}'
4360 if $running_under_some_shell;
4361 to guarantee perl startup should the shell execute the script. Note
4362 that this magic incatation is not understood by csh.
4364 startsh (startsh.U):
4365 This variable contains the string to put on the front of a shell
4366 script to make sure (hopefully) that it runs with sh and not some
4369 static_ext (Extensions.U):
4370 This variable holds a list of XS extension files we want to
4371 link statically into the package. It is used by Makefile.
4373 stdchar (stdchar.U):
4374 This variable conditionally defines STDCHAR to be the type of char
4375 used in stdio.h. It has the values "unsigned char" or "char".
4377 stdio_base (d_stdstdio.U):
4378 This variable defines how, given a FILE pointer, fp, to access the
4379 _base field (or equivalent) of stdio.h's FILE structure. This will
4380 be used to define the macro FILE_base(fp).
4382 stdio_bufsiz (d_stdstdio.U):
4383 This variable defines how, given a FILE pointer, fp, to determine
4384 the number of bytes store in the I/O buffer pointer to by the
4385 _base field (or equivalent) of stdio.h's FILE structure. This will
4386 be used to define the macro FILE_bufsiz(fp).
4388 stdio_cnt (d_stdstdio.U):
4389 This variable defines how, given a FILE pointer, fp, to access the
4390 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4391 be used to define the macro FILE_cnt(fp).
4393 stdio_filbuf (d_stdstdio.U):
4394 This variable defines how, given a FILE pointer, fp, to tell
4395 stdio to refill its internal buffers (?). This will
4396 be used to define the macro FILE_filbuf(fp).
4398 stdio_ptr (d_stdstdio.U):
4399 This variable defines how, given a FILE pointer, fp, to access the
4400 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4401 be used to define the macro FILE_ptr(fp).
4403 stdio_stream_array (stdio_streams.U):
4404 This variable tells the name of the array holding the stdio streams.
4405 Usual values include _iob, __iob, and __sF.
4407 strerror_r_proto (d_strerror_r.U):
4408 This variable encodes the prototype of strerror_r.
4409 It is zero if d_strerror_r is undef, and one of the
4410 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4413 strings (i_string.U):
4414 This variable holds the full path of the string header that will be
4415 used. Typically /usr/include/string.h or /usr/include/strings.h.
4418 This variable is defined but not used by Configure.
4419 The value is a plain '' and is not useful.
4421 subversion (patchlevel.U):
4422 The subversion level of this package.
4423 The value of subversion comes from the patchlevel.h file.
4424 In a version number such as 5.6.1, this is the "1".
4425 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4426 This is unique to perl.
4429 This variable holds the place where the manual is located on this
4430 system. It is not the place where the user wants to put his manual
4431 pages. Rather it is the place where Configure may look to find manual
4432 for unix commands (section 1 of the manual usually). See mansrc.
4435 This variable is defined but not used by Configure.
4436 The value is a plain '' and is not useful.
4439 This variable is defined but not used by Configure.
4440 The value is a plain '' and is not useful.
4442 targetarch (Cross.U):
4443 If cross-compiling, this variable contains the target architecture.
4444 If not, this will be empty.
4447 This variable is defined but not used by Configure.
4448 The value is a plain '' and is not useful.
4451 This variable is defined but not used by Configure.
4452 The value is a plain '' and is not useful.
4455 This variable is used internally by Configure to determine the
4456 full pathname (if any) of the test program. After Configure runs,
4457 the value is reset to a plain "test" and is not useful.
4459 timeincl (i_time.U):
4460 This variable holds the full path of the included time header(s).
4462 timetype (d_time.U):
4463 This variable holds the type returned by time(). It can be long,
4464 or time_t on BSD sites (in which case <sys/types.h> should be
4465 included). Anyway, the type Time_t should be used.
4467 tmpnam_r_proto (d_tmpnam_r.U):
4468 This variable encodes the prototype of tmpnam_r.
4469 It is zero if d_tmpnam_r is undef, and one of the
4470 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4474 This variable contains the command used by Configure
4475 to copy to from the target host. Useful and available
4476 only during Perl build.
4477 The string ':' if not cross-compiling.
4480 This variable is used internally by Configure to determine the
4481 full pathname (if any) of the touch program. After Configure runs,
4482 the value is reset to a plain "touch" and is not useful.
4485 This variable is used internally by Configure to determine the
4486 full pathname (if any) of the tr program. After Configure runs,
4487 the value is reset to a plain "tr" and is not useful.
4490 This variable contains the value to be passed to the tr(1)
4491 command to transliterate a newline. Typical values are
4492 '\012' and '\n'. This is needed for EBCDIC systems where
4493 newline is not necessarily '\012'.
4496 This variable is defined but not used by Configure.
4497 The value is a plain '' and is not useful.
4499 ttyname_r_proto (d_ttyname_r.U):
4500 This variable encodes the prototype of ttyname_r.
4501 It is zero if d_ttyname_r is undef, and one of the
4502 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4506 This variable is the size of an U16 in bytes.
4509 This variable contains the C type used for Perl's U16.
4512 This variable is the size of an U32 in bytes.
4515 This variable contains the C type used for Perl's U32.
4518 This variable is the size of an U64 in bytes.
4521 This variable contains the C type used for Perl's U64.
4524 This variable is the size of an U8 in bytes.
4527 This variable contains the C type used for Perl's U8.
4530 This variable contains the format string used for printing a Uid_t.
4532 uidsign (uidsign.U):
4533 This variable contains the signedness of a uidtype.
4534 1 for unsigned, -1 for signed.
4536 uidsize (uidsize.U):
4537 This variable contains the size of a uidtype in bytes.
4539 uidtype (uidtype.U):
4540 This variable defines Uid_t to be something like uid_t, int,
4541 ushort, or whatever type is used to declare user ids in the kernel.
4544 This variable is used internally by Configure to determine the
4545 full pathname (if any) of the uname program. After Configure runs,
4546 the value is reset to a plain "uname" and is not useful.
4549 This variable is used internally by Configure to determine the
4550 full pathname (if any) of the uniq program. After Configure runs,
4551 the value is reset to a plain "uniq" and is not useful.
4553 uquadtype (quadtype.U):
4554 This variable defines Uquad_t to be something like unsigned long,
4555 unsigned int, unsigned long long, uint64_t, or whatever type is
4556 used for 64-bit integers.
4558 use5005threads (usethreads.U):
4559 This variable conditionally defines the USE_5005THREADS symbol,
4560 and indicates that Perl should be built to use the 5.005-based
4561 threading implementation.
4563 use64bitall (use64bits.U):
4564 This variable conditionally defines the USE_64_BIT_ALL symbol,
4565 and indicates that 64-bit integer types should be used
4566 when available. The maximal possible
4567 64-bitness is employed: LP64 or ILP64, meaning that you will
4568 be able to use more than 2 gigabytes of memory. This mode is
4569 even more binary incompatible than USE_64_BIT_INT. You may not
4570 be able to run the resulting executable in a 32-bit CPU at all or
4571 you may need at least to reboot your OS to 64-bit mode.
4573 use64bitint (use64bits.U):
4574 This variable conditionally defines the USE_64_BIT_INT symbol,
4575 and indicates that 64-bit integer types should be used
4576 when available. The minimal possible 64-bitness
4577 is employed, just enough to get 64-bit integers into Perl.
4578 This may mean using for example "long longs", while your memory
4579 may still be limited to 2 gigabytes.
4581 usecrosscompile (Cross.U):
4582 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4583 and indicates that Perl has been cross-compiled.
4586 This variable indicates if the system supports dynamic
4587 loading of some sort. See also dlsrc and dlobj.
4589 usefaststdio (usefaststdio.U):
4590 This variable conditionally defines the USE_FAST_STDIO symbol,
4591 and indicates that Perl should be built to use 'fast stdio'.
4592 Defaults to define in Perls 5.8 and earlier, to undef later.
4594 useithreads (usethreads.U):
4595 This variable conditionally defines the USE_ITHREADS symbol,
4596 and indicates that Perl should be built to use the interpreter-based
4597 threading implementation.
4599 uselargefiles (uselfs.U):
4600 This variable conditionally defines the USE_LARGE_FILES symbol,
4601 and indicates that large file interfaces should be used when
4604 uselongdouble (uselongdbl.U):
4605 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4606 and indicates that long doubles should be used when available.
4608 usemorebits (usemorebits.U):
4609 This variable conditionally defines the USE_MORE_BITS symbol,
4610 and indicates that explicit 64-bit interfaces and long doubles
4611 should be used when available.
4613 usemultiplicity (usemultiplicity.U):
4614 This variable conditionally defines the MULTIPLICITY symbol,
4615 and indicates that Perl should be built to use multiplicity.
4617 usemymalloc (mallocsrc.U):
4618 This variable contains y if the malloc that comes with this package
4619 is desired over the system's version of malloc. People often include
4620 special versions of malloc for effiency, but such versions are often
4621 less portable. See also mallocsrc and mallocobj.
4622 If this is 'y', then -lmalloc is removed from $libs.
4625 This variable contains 'true' or 'false' depending whether the
4626 nm extraction is wanted or not.
4628 useopcode (Extensions.U):
4629 This variable holds either 'true' or 'false' to indicate
4630 whether the Opcode extension should be used. The sole
4631 use for this currently is to allow an easy mechanism
4632 for users to skip the Opcode extension from the Configure
4635 useperlio (useperlio.U):
4636 This variable conditionally defines the USE_PERLIO symbol,
4637 and indicates that the PerlIO abstraction should be
4640 useposix (Extensions.U):
4641 This variable holds either 'true' or 'false' to indicate
4642 whether the POSIX extension should be used. The sole
4643 use for this currently is to allow an easy mechanism
4644 for hints files to indicate that POSIX will not compile
4645 on a particular system.
4647 usereentrant (usethreads.U):
4648 This variable conditionally defines the USE_REENTRANT_API symbol,
4649 which indicates that the thread code may try to use the various
4650 _r versions of library functions. This is only potentially
4651 meaningful if usethreads is set and is very experimental, it is
4652 not even prompted for.
4655 This variable is set to true when the user agrees to use sfio.
4656 It is set to false when sfio is not available or when the user
4657 explicitely requests not to use sfio. It is here primarily so
4658 that command-line settings can override the auto-detection of
4659 d_sfio without running into a "WHOA THERE".
4661 useshrplib (libperl.U):
4662 This variable is set to 'true' if the user wishes
4663 to build a shared libperl, and 'false' otherwise.
4665 usesocks (usesocks.U):
4666 This variable conditionally defines the USE_SOCKS symbol,
4667 and indicates that Perl should be built to use SOCKS.
4669 usethreads (usethreads.U):
4670 This variable conditionally defines the USE_THREADS symbol,
4671 and indicates that Perl should be built to use threads.
4673 usevendorprefix (vendorprefix.U):
4674 This variable tells whether the vendorprefix
4675 and consequently other vendor* paths are in use.
4677 usevfork (d_vfork.U):
4678 This variable is set to true when the user accepts to use vfork.
4679 It is set to false when no vfork is available or when the user
4680 explicitely requests not to use vfork.
4683 This variable holds the path of the include files, which is
4684 usually /usr/include. It is mainly used by other Configure units.
4687 This variable is defined but not used by Configure.
4688 The value is a plain '' and is not useful.
4690 uvoformat (perlxvf.U):
4691 This variable contains the format string used for printing
4692 a Perl UV as an unsigned octal integer.
4695 This variable is the size of a UV in bytes.
4698 This variable contains the C type used for Perl's UV.
4700 uvuformat (perlxvf.U):
4701 This variable contains the format string used for printing
4702 a Perl UV as an unsigned decimal integer.
4704 uvxformat (perlxvf.U):
4705 This variable contains the format string used for printing
4706 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4708 uvXUformat (perlxvf.U):
4709 This variable contains the format string used for printing
4710 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4712 vendorarch (vendorarch.U):
4713 This variable contains the value of the PERL_VENDORARCH symbol.
4714 It may have a ~ on the front.
4715 The standard distribution will put nothing in this directory.
4716 Vendors who distribute perl may wish to place their own
4717 architecture-dependent modules and extensions in this directory with
4718 MakeMaker Makefile.PL INSTALLDIRS=vendor
4719 or equivalent. See INSTALL for details.
4721 vendorarchexp (vendorarch.U):
4722 This variable is the ~name expanded version of vendorarch, so that you
4723 may use it directly in Makefiles or shell scripts.
4725 vendorbin (vendorbin.U):
4726 This variable contains the eventual value of the VENDORBIN symbol.
4727 It may have a ~ on the front.
4728 The standard distribution will put nothing in this directory.
4729 Vendors who distribute perl may wish to place additional
4730 binaries in this directory with
4731 MakeMaker Makefile.PL INSTALLDIRS=vendor
4732 or equivalent. See INSTALL for details.
4734 vendorbinexp (vendorbin.U):
4735 This variable is the ~name expanded version of vendorbin, so that you
4736 may use it directly in Makefiles or shell scripts.
4738 vendorhtml1 (vendorhtml1.U):
4739 This variable contains the name of the directory for html
4740 pages. It may have a ~ on the front.
4741 The standard distribution will put nothing in this directory.
4742 Vendors who distribute perl may wish to place their own
4743 html pages in this directory with
4744 MakeMaker Makefile.PL INSTALLDIRS=vendor
4745 or equivalent. See INSTALL for details.
4747 vendorhtml1exp (vendorhtml1.U):
4748 This variable is the ~name expanded version of vendorhtml1, so that you
4749 may use it directly in Makefiles or shell scripts.
4751 vendorhtml3 (vendorhtml3.U):
4752 This variable contains the name of the directory for html
4753 library pages. It may have a ~ on the front.
4754 The standard distribution will put nothing in this directory.
4755 Vendors who distribute perl may wish to place their own
4756 html pages for modules and extensions in this directory with
4757 MakeMaker Makefile.PL INSTALLDIRS=vendor
4758 or equivalent. See INSTALL for details.
4760 vendorhtml3exp (vendorhtml3.U):
4761 This variable is the ~name expanded version of vendorhtml3, so that you
4762 may use it directly in Makefiles or shell scripts.
4764 vendorlib (vendorlib.U):
4765 This variable contains the eventual value of the VENDORLIB symbol,
4766 which is the name of the private library for this package.
4767 The standard distribution will put nothing in this directory.
4768 Vendors who distribute perl may wish to place their own
4769 modules in this directory with
4770 MakeMaker Makefile.PL INSTALLDIRS=vendor
4771 or equivalent. See INSTALL for details.
4773 vendorlib_stem (vendorlib.U):
4774 This variable is $vendorlibexp with any trailing version-specific component
4775 removed. The elements in inc_version_list (inc_version_list.U) can
4776 be tacked onto this variable to generate a list of directories to search.
4778 vendorlibexp (vendorlib.U):
4779 This variable is the ~name expanded version of vendorlib, so that you
4780 may use it directly in Makefiles or shell scripts.
4782 vendorman1 (vendorman1.U):
4783 This variable contains the name of the directory for man1
4784 pages. It may have a ~ on the front.
4785 The standard distribution will put nothing in this directory.
4786 Vendors who distribute perl may wish to place their own
4787 man1 pages in this directory with
4788 MakeMaker Makefile.PL INSTALLDIRS=vendor
4789 or equivalent. See INSTALL for details.
4791 vendorman1exp (vendorman1.U):
4792 This variable is the ~name expanded version of vendorman1, so that you
4793 may use it directly in Makefiles or shell scripts.
4795 vendorman3 (vendorman3.U):
4796 This variable contains the name of the directory for man3
4797 pages. It may have a ~ on the front.
4798 The standard distribution will put nothing in this directory.
4799 Vendors who distribute perl may wish to place their own
4800 man3 pages in this directory with
4801 MakeMaker Makefile.PL INSTALLDIRS=vendor
4802 or equivalent. See INSTALL for details.
4804 vendorman3exp (vendorman3.U):
4805 This variable is the ~name expanded version of vendorman3, so that you
4806 may use it directly in Makefiles or shell scripts.
4808 vendorprefix (vendorprefix.U):
4809 This variable holds the full absolute path of the directory below
4810 which the vendor will install add-on packages.
4811 See INSTALL for usage and examples.
4813 vendorprefixexp (vendorprefix.U):
4814 This variable holds the full absolute path of the directory below
4815 which the vendor will install add-on packages. Derived from vendorprefix.
4817 vendorscript (vendorscript.U):
4818 This variable contains the eventual value of the VENDORSCRIPT symbol.
4819 It may have a ~ on the front.
4820 The standard distribution will put nothing in this directory.
4821 Vendors who distribute perl may wish to place additional
4822 executable scripts in this directory with
4823 MakeMaker Makefile.PL INSTALLDIRS=vendor
4824 or equivalent. See INSTALL for details.
4826 vendorscriptexp (vendorscript.U):
4827 This variable is the ~name expanded version of vendorscript, so that you
4828 may use it directly in Makefiles or shell scripts.
4830 version (patchlevel.U):
4831 The full version number of this package, such as 5.6.1 (or 5_6_1).
4832 This combines revision, patchlevel, and subversion to get the
4833 full version number, including any possible subversions.
4834 This is suitable for use as a directory name, and hence is
4835 filesystem dependent.
4837 version_patchlevel_string (patchlevel.U):
4838 This is a string combining version, subversion and
4839 perl_patchlevel (if perl_patchlevel is non-zero).
4840 It is typically something like
4841 'version 7 subversion 1' or
4842 'version 7 subversion 1 patchlevel 11224'
4843 It is computed here to avoid duplication of code in myconfig.SH
4846 versiononly (versiononly.U):
4847 If set, this symbol indicates that only the version-specific
4848 components of a perl installation should be installed.
4849 This may be useful for making a test installation of a new
4850 version without disturbing the existing installation.
4851 Setting versiononly is equivalent to setting installperl's -v option.
4852 In particular, the non-versioned scripts and programs such as
4853 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
4854 (see INSTALL for a more complete list). Nor are the man
4856 Usually, this is undef.
4859 This variable is defined but not used by Configure.
4860 The value is a plain '' and is not useful.
4862 voidflags (voidflags.U):
4863 This variable contains the eventual value of the VOIDFLAGS symbol,
4864 which indicates how much support of the void type is given by this
4865 compiler. See VOIDFLAGS for more info.
4868 This variable holds extra path (space-separated) used to find
4869 libraries on this platform, for example CPU-specific libraries
4870 (on multi-CPU platforms) may be listed here.
4872 xs_apiversion (xs_apiversion.U):
4873 This variable contains the version of the oldest perl binary
4874 compatible with the present perl. perl.c:incpush() and
4875 lib/lib.pm will automatically search in $sitearch for older
4876 directories across major versions back to xs_apiversion.
4877 This is only useful if you have a perl library directory tree
4878 structured like the default one.
4879 See INSTALL for how this works.
4880 The versioned site_perl directory was introduced in 5.005,
4881 so that is the lowest possible value.
4882 Since this can depend on compile time options
4883 it is set by Configure. Other non-default sources
4884 of potential incompatibility, such as multiplicity, threads,
4885 debugging, 64bits, sfio, etc., are not checked for currently,
4886 though in principle we could go snooping around in old
4890 This variable holds the name of the compiler compiler we
4891 want to use in the Makefile. It can be yacc, byacc, or bison -y.
4894 This variable contains any additional yacc flags desired by the
4895 user. It is up to the Makefile to use this.
4898 This variable is defined but not used by Configure.
4899 The value is a plain '' and is not useful.
4902 This variable is used internally by Configure to determine the
4903 full pathname (if any) of the zip program. After Configure runs,
4904 the value is reset to a plain "zip" and is not useful.