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 archname (archname.U):
116 This variable is a short name to characterize the current
117 architecture. It is used mainly to construct the default archlib.
119 archname64 (use64bits.U):
120 This variable is used for the 64-bitness part of $archname.
123 This variable defines any additional objects that must be linked
124 in with the program on this architecture. On unix, it is usually
125 empty. It is typically used to include emulations of unix calls
126 or other facilities. For perl on OS/2, for example, this would
129 asctime_r_proto (d_asctime_r.U):
130 This variable encodes the prototype of asctime_r.
131 It is zero if d_asctime_r is undef, and one of the
132 REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
136 This variable is used internally by Configure to determine the
137 full pathname (if any) of the awk program. After Configure runs,
138 the value is reset to a plain "awk" and is not useful.
141 The base revision level of this package, from the .package file.
144 This variable is defined but not used by Configure.
145 The value is a plain '' and is not useful.
148 This variable holds the name of the directory in which the user wants
149 to put publicly executable images for the package in question. It
150 is most often a local directory such as /usr/local/bin. Programs using
151 this variable must be prepared to deal with ~name substitution.
154 This is the same as the bin variable, but is filename expanded at
155 configuration time, for use in your makefiles.
158 This variable is used internally by Configure to determine the
159 full pathname (if any) of the bison program. After Configure runs,
160 the value is reset to a plain "bison" and is not useful.
163 This variable is used internally by Configure to determine the
164 full pathname (if any) of the byacc program. After Configure runs,
165 the value is reset to a plain "byacc" and is not useful.
167 byteorder (byteorder.U):
168 This variable holds the byte order in a UV. In the following,
169 larger digits indicate more significance. The variable byteorder
170 is either 4321 on a big-endian machine, or 1234 on a little-endian,
171 or 87654321 on a Cray ... or 3412 with weird order !
174 This variable contains the \c string if that is what causes the echo
175 command to suppress newline. Otherwise it is null. Correct usage is
176 $echo $n "prompt for a question: $c".
178 castflags (d_castneg.U):
179 This variable contains a flag that precise difficulties the
180 compiler has casting odd floating values to unsigned long:
182 1 = couldn't cast < 0
183 2 = couldn't cast >= 0x80000000
184 4 = couldn't cast in argument expression list
187 This variable is used internally by Configure to determine the
188 full pathname (if any) of the cat program. After Configure runs,
189 the value is reset to a plain "cat" and is not useful.
192 This variable holds the name of a command to execute a C compiler which
193 can resolve multiple global references that happen to have the same
194 name. Usual values are 'cc' and 'gcc'.
195 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
197 cccdlflags (dlsrc.U):
198 This variable contains any special flags that might need to be
199 passed with 'cc -c' to compile modules to be used to create a shared
200 library that will be used for dynamic loading. For hpux, this
201 should be +z. It is up to the makefile to use it.
204 This variable contains any special flags that might need to be
205 passed to cc to link with a shared library for dynamic loading.
206 It is up to the makefile to use it. For sunos 4.1, it should
210 This variable contains any additional C compiler flags desired by
211 the user. It is up to the Makefile to use this.
213 ccflags_uselargefiles (uselfs.U):
214 This variable contains the compiler flags needed by large file builds
215 and added to ccflags by hints files.
218 This can set either by hints files or by Configure. If using
219 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
220 Some platforms, however, make good use of this by storing the
221 flavor of the C compiler being used here. For example if using
222 the Sun WorkShop suite, ccname will be 'workshop'.
224 ccsymbols (Cppsym.U):
225 The variable contains the symbols defined by the C compiler alone.
226 The symbols defined by cpp or by cc when it calls cpp are not in
227 this list, see cppsymbols and cppccsymbols.
228 The list is a space-separated list of symbol=value tokens.
230 ccversion (Checkcc.U):
231 This can set either by hints files or by Configure. If using
232 a (non-gcc) vendor cc, this variable may contain a version for
236 Login name of the person who ran the Configure script and answered the
237 questions. This is used to tag both config.sh and config_h.SH.
239 cf_email (cf_email.U):
240 Electronic mail address of the person who ran Configure. This can be
241 used by units that require the user's e-mail, like MailList.U.
244 Holds the output of the "date" command when the configuration file was
245 produced. This is used to tag both config.sh and config_h.SH.
247 charsize (charsize.U):
248 This variable contains the value of the CHARSIZE symbol, which
249 indicates to the C program how many bytes there are in a character.
252 This variable is defined but not used by Configure.
253 The value is a plain '' and is not useful.
256 This variable is used internally by Configure to determine the
257 full pathname (if any) of the chmod program. After Configure runs,
258 the value is reset to a plain "chmod" and is not useful.
261 This variable is defined but not used by Configure.
262 The value is a plain '' and is not useful.
264 clocktype (d_times.U):
265 This variable holds the type returned by times(). It can be long,
266 or clock_t on BSD sites (in which case <sys/types.h> should be
270 This variable is used internally by Configure to determine the
271 full pathname (if any) of the comm program. After Configure runs,
272 the value is reset to a plain "comm" and is not useful.
275 This variable is defined but not used by Configure.
276 The value is a plain '' and is not useful.
278 contains (contains.U):
279 This variable holds the command to do a grep with a proper return
280 status. On most sane systems it is simply "grep". On insane systems
281 it is a grep followed by a cat followed by a test. This variable
282 is primarily for the use of other Configure units.
285 This variable is used internally by Configure to determine the
286 full pathname (if any) of the cp program. After Configure runs,
287 the value is reset to a plain "cp" and is not useful.
290 This variable is defined but not used by Configure.
291 The value is a plain '' and is not useful.
294 This variable is used internally by Configure to determine the
295 full pathname (if any) of the cpp program. After Configure runs,
296 the value is reset to a plain "cpp" and is not useful.
298 cpp_stuff (cpp_stuff.U):
299 This variable contains an identification of the concatenation mechanism
300 used by the C preprocessor.
302 cppccsymbols (Cppsym.U):
303 The variable contains the symbols defined by the C compiler
304 when it calls cpp. The symbols defined by the cc alone or cpp
305 alone are not in this list, see ccsymbols and cppsymbols.
306 The list is a space-separated list of symbol=value tokens.
308 cppflags (ccflags.U):
309 This variable holds the flags that will be passed to the C pre-
310 processor. It is up to the Makefile to use it.
312 cpplast (cppstdin.U):
313 This variable has the same functionality as cppminus, only it applies
314 to cpprun and not cppstdin.
316 cppminus (cppstdin.U):
317 This variable contains the second part of the string which will invoke
318 the C preprocessor on the standard input and produce to standard
319 output. This variable will have the value "-" if cppstdin needs
320 a minus to specify standard input, otherwise the value is "".
323 This variable contains the command which will invoke a C preprocessor
324 on standard input and put the output to stdout. It is guaranteed not
325 to be a wrapper and may be a null string if no preprocessor can be
326 made directly available. This preprocessor might be different from the
327 one used by the C compiler. Don't forget to append cpplast after the
328 preprocessor options.
330 cppstdin (cppstdin.U):
331 This variable contains the command which will invoke the C
332 preprocessor on standard input and put the output to stdout.
333 It is primarily used by other Configure units that ask about
334 preprocessor symbols.
336 cppsymbols (Cppsym.U):
337 The variable contains the symbols defined by the C preprocessor
338 alone. The symbols defined by cc or by cc when it calls cpp are
339 not in this list, see ccsymbols and cppccsymbols.
340 The list is a space-separated list of symbol=value tokens.
342 crypt_r_proto (d_crypt_r.U):
343 This variable encodes the prototype of crypt_r.
344 It is zero if d_crypt_r is undef, and one of the
345 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
348 cryptlib (d_crypt.U):
349 This variable holds -lcrypt or the path to a libcrypt.a archive if
350 the crypt() function is not defined in the standard C library. It is
351 up to the Makefile to use this.
354 This variable is used internally by Configure to determine the
355 full pathname (if any) of the csh program. After Configure runs,
356 the value is reset to a plain "csh" and is not useful.
358 ctermid_r_proto (d_ctermid_r.U):
359 This variable encodes the prototype of ctermid_r.
360 It is zero if d_ctermid_r is undef, and one of the
361 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
364 ctime_r_proto (d_ctime_r.U):
365 This variable encodes the prototype of ctime_r.
366 It is zero if d_ctime_r is undef, and one of the
367 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
370 d__fwalk (d__fwalk.U):
371 This variable conditionally defines HAS__FWALK if _fwalk() is
372 available to apply a function to all the file handles.
374 d_access (d_access.U):
375 This variable conditionally defines HAS_ACCESS if the access() system
376 call is available to check for access permissions using real IDs.
378 d_accessx (d_accessx.U):
379 This variable conditionally defines the HAS_ACCESSX symbol, which
380 indicates to the C program that the accessx() routine is available.
383 This variable conditionally defines the HAS_AINTL symbol, which
384 indicates to the C program that the aintl() routine is available.
385 If copysignl is also present we can emulate modfl.
388 This variable conditionally defines the HAS_ALARM symbol, which
389 indicates to the C program that the alarm() routine is available.
391 d_archlib (archlib.U):
392 This variable conditionally defines ARCHLIB to hold the pathname
393 of architecture-dependent library files for $package. If
394 $archlib is the same as $privlib, then this is set to undef.
396 d_asctime_r (d_asctime_r.U):
397 This variable conditionally defines the HAS_ASCTIME_R symbol,
398 which indicates to the C program that the asctime_r()
399 routine is available.
402 This variable conditionally defines the HAS_ATOLF symbol, which
403 indicates to the C program that the atolf() routine is available.
406 This variable conditionally defines the HAS_ATOLL symbol, which
407 indicates to the C program that the atoll() routine is available.
409 d_attribute_format (d_attribut.U):
410 This variable conditionally defines HASATTRIBUTE_FORMAT, which
411 indicates the C compiler can check for printf-like formats.
413 d_attribute_malloc (d_attribut.U):
414 This variable conditionally defines HASATTRIBUTE_MALLOC, which
415 indicates the C compiler can understand functions as having
416 malloc-like semantics.
418 d_attribute_nonnull (d_attribut.U):
419 This variable conditionally defines HASATTRIBUTE_NONNULL, which
420 indicates that the C compiler can know that certain arguments
421 must not be NULL, and will check accordingly at compile time.
423 d_attribute_noreturn (d_attribut.U):
424 This variable conditionally defines HASATTRIBUTE_NORETURN, which
425 indicates that the C compiler can know that certain functions
426 are guaranteed never to return.
428 d_attribute_pure (d_attribut.U):
429 This variable conditionally defines HASATTRIBUTE_PURE, which
430 indicates that the C compiler can know that certain functions
431 are "pure" functions, meaning that they have no side effects, and
432 only rely on function input and/or global data for their results.
434 d_attribute_unused (d_attribut.U):
435 This variable conditionally defines HASATTRIBUTE_UNUSED, which
436 indicates that the C compiler can know that certain variables
437 and arguments may not always be used, and to not throw warnings
438 if they don't get used.
440 d_attribute_warn_unused_result (d_attribut.U):
441 This variable conditionally defines
442 HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
443 compiler can know that certain functions have a return values
444 that must not be ignored, such as malloc() or open().
447 This variable conditionally defines the HAS_BCMP symbol if
448 the bcmp() routine is available to compare strings.
451 This variable conditionally defines the HAS_BCOPY symbol if
452 the bcopy() routine is available to copy strings.
455 This symbol conditionally defines the symbol BSD when running on a
458 d_bsdgetpgrp (d_getpgrp.U):
459 This variable conditionally defines USE_BSD_GETPGRP if
460 getpgrp needs one arguments whereas USG one needs none.
462 d_bsdsetpgrp (d_setpgrp.U):
463 This variable conditionally defines USE_BSD_SETPGRP if
464 setpgrp needs two arguments whereas USG one needs none.
465 See also d_setpgid for a POSIX interface.
467 d_builtin_choose_expr (d_builtin.U):
468 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
469 indicates that the compiler supports __builtin_choose_expr(x,y,z).
470 This built-in function is analogous to the "x?y:z" operator in C,
471 except that the expression returned has its type unaltered by
472 promotion rules. Also, the built-in function does not evaluate
473 the expression that was not chosen.
475 d_builtin_expect (d_builtin.U):
476 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
477 that the compiler supports __builtin_expect(exp,c). You may use
478 __builtin_expect to provide the compiler with branch prediction
482 This variable conditionally defines the HAS_BZERO symbol if
483 the bzero() routine is available to set memory to 0.
485 d_casti32 (d_casti32.U):
486 This variable conditionally defines CASTI32, which indicates
487 whether the C compiler can cast large floats to 32-bit ints.
489 d_castneg (d_castneg.U):
490 This variable conditionally defines CASTNEG, which indicates
491 wether the C compiler can cast negative float to unsigned.
493 d_charvspr (d_vprintf.U):
494 This variable conditionally defines CHARVSPRINTF if this system
495 has vsprintf returning type (char*). The trend seems to be to
496 declare it as "int vsprintf()".
499 This variable conditionally defines the HAS_CHOWN symbol, which
500 indicates to the C program that the chown() routine is available.
502 d_chroot (d_chroot.U):
503 This variable conditionally defines the HAS_CHROOT symbol, which
504 indicates to the C program that the chroot() routine is available.
506 d_chsize (d_chsize.U):
507 This variable conditionally defines the CHSIZE symbol, which
508 indicates to the C program that the chsize() routine is available
509 to truncate files. You might need a -lx to get this routine.
512 This variable conditionally defines the HAS_CLASS symbol, which
513 indicates to the C program that the class() routine is available.
515 d_clearenv (d_clearenv.U):
516 This variable conditionally defines the HAS_CLEARENV symbol, which
517 indicates to the C program that the clearenv () routine is available.
519 d_closedir (d_closedir.U):
520 This variable conditionally defines HAS_CLOSEDIR if closedir() is
523 d_cmsghdr_s (d_cmsghdr_s.U):
524 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
525 which indicates that the struct cmsghdr is supported.
528 This variable conditionally defines the HASCONST symbol, which
529 indicates to the C program that this C compiler knows about the
532 d_copysignl (d_copysignl.U):
533 This variable conditionally defines the HAS_COPYSIGNL symbol, which
534 indicates to the C program that the copysignl() routine is available.
535 If aintl is also present we can emulate modfl.
538 This variable conditionally defines the CRYPT symbol, which
539 indicates to the C program that the crypt() routine is available
540 to encrypt passwords and the like.
542 d_crypt_r (d_crypt_r.U):
543 This variable conditionally defines the HAS_CRYPT_R symbol,
544 which indicates to the C program that the crypt_r()
545 routine is available.
548 This variable conditionally defines the CSH symbol, which
549 indicates to the C program that the C-shell exists.
551 d_ctermid_r (d_ctermid_r.U):
552 This variable conditionally defines the HAS_CTERMID_R symbol,
553 which indicates to the C program that the ctermid_r()
554 routine is available.
556 d_ctime_r (d_ctime_r.U):
557 This variable conditionally defines the HAS_CTIME_R symbol,
558 which indicates to the C program that the ctime_r()
559 routine is available.
561 d_c99_variadic_macros (d_c99_variadic_macros.U):
562 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
563 symbol, which indicates to the C program that C99 variadic macros
566 d_cuserid (d_cuserid.U):
567 This variable conditionally defines the HAS_CUSERID symbol, which
568 indicates to the C program that the cuserid() routine is available
569 to get character login names.
571 d_dbl_dig (d_dbl_dig.U):
572 This variable conditionally defines d_dbl_dig if this system's
573 header files provide DBL_DIG, which is the number of significant
574 digits in a double precision number.
576 d_dbminitproto (d_dbminitproto.U):
577 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
578 which indicates to the C program that the system provides
579 a prototype for the dbminit() function. Otherwise, it is
580 up to the program to supply one.
582 d_difftime (d_difftime.U):
583 This variable conditionally defines the HAS_DIFFTIME symbol, which
584 indicates to the C program that the difftime() routine is available.
587 This variable conditionally defines the HAS_DIRFD constant,
588 which indicates to the C program that dirfd() is available
589 to return the file descriptor of a directory stream.
591 d_dirnamlen (i_dirent.U):
592 This variable conditionally defines DIRNAMLEN, which indicates
593 to the C program that the length of directory entry names is
594 provided by a d_namelen field.
596 d_dlerror (d_dlerror.U):
597 This variable conditionally defines the HAS_DLERROR symbol, which
598 indicates to the C program that the dlerror() routine is available.
600 d_dlopen (d_dlopen.U):
601 This variable conditionally defines the HAS_DLOPEN symbol, which
602 indicates to the C program that the dlopen() routine is available.
604 d_dlsymun (d_dlsymun.U):
605 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
606 indicates that we need to prepend an underscore to the symbol
607 name before calling dlsym().
609 d_dosuid (d_dosuid.U):
610 This variable conditionally defines the symbol DOSUID, which
611 tells the C program that it should insert setuid emulation code
612 on hosts which have setuid #! scripts disabled.
614 d_drand48_r (d_drand48_r.U):
615 This variable conditionally defines the HAS_DRAND48_R symbol,
616 which indicates to the C program that the drand48_r()
617 routine is available.
619 d_drand48proto (d_drand48proto.U):
620 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
621 which indicates to the C program that the system provides
622 a prototype for the drand48() function. Otherwise, it is
623 up to the program to supply one.
626 This variable conditionally defines HAS_DUP2 if dup2() is
627 available to duplicate file descriptors.
629 d_eaccess (d_eaccess.U):
630 This variable conditionally defines the HAS_EACCESS symbol, which
631 indicates to the C program that the eaccess() routine is available.
633 d_endgrent (d_endgrent.U):
634 This variable conditionally defines the HAS_ENDGRENT symbol, which
635 indicates to the C program that the endgrent() routine is available
636 for sequential access of the group database.
638 d_endgrent_r (d_endgrent_r.U):
639 This variable conditionally defines the HAS_ENDGRENT_R symbol,
640 which indicates to the C program that the endgrent_r()
641 routine is available.
643 d_endhent (d_endhent.U):
644 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
645 available to close whatever was being used for host queries.
647 d_endhostent_r (d_endhostent_r.U):
648 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
649 which indicates to the C program that the endhostent_r()
650 routine is available.
652 d_endnent (d_endnent.U):
653 This variable conditionally defines HAS_ENDNETENT if endnetent() is
654 available to close whatever was being used for network queries.
656 d_endnetent_r (d_endnetent_r.U):
657 This variable conditionally defines the HAS_ENDNETENT_R symbol,
658 which indicates to the C program that the endnetent_r()
659 routine is available.
661 d_endpent (d_endpent.U):
662 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
663 available to close whatever was being used for protocol queries.
665 d_endprotoent_r (d_endprotoent_r.U):
666 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
667 which indicates to the C program that the endprotoent_r()
668 routine is available.
670 d_endpwent (d_endpwent.U):
671 This variable conditionally defines the HAS_ENDPWENT symbol, which
672 indicates to the C program that the endpwent() routine is available
673 for sequential access of the passwd database.
675 d_endpwent_r (d_endpwent_r.U):
676 This variable conditionally defines the HAS_ENDPWENT_R symbol,
677 which indicates to the C program that the endpwent_r()
678 routine is available.
680 d_endsent (d_endsent.U):
681 This variable conditionally defines HAS_ENDSERVENT if endservent() is
682 available to close whatever was being used for service queries.
684 d_endservent_r (d_endservent_r.U):
685 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
686 which indicates to the C program that the endservent_r()
687 routine is available.
689 d_eofnblk (nblock_io.U):
690 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
691 when reading from a non-blocking I/O source.
694 This variable conditionally defines the symbols EUNICE and VAX, which
695 alerts the C program that it must deal with ideosyncracies of VMS.
697 d_faststdio (d_faststdio.U):
698 This variable conditionally defines the HAS_FAST_STDIO symbol,
699 which indicates to the C program that the "fast stdio" is available
700 to manipulate the stdio buffers directly.
702 d_fchdir (d_fchdir.U):
703 This variable conditionally defines the HAS_FCHDIR symbol, which
704 indicates to the C program that the fchdir() routine is available.
706 d_fchmod (d_fchmod.U):
707 This variable conditionally defines the HAS_FCHMOD symbol, which
708 indicates to the C program that the fchmod() routine is available
709 to change mode of opened files.
711 d_fchown (d_fchown.U):
712 This variable conditionally defines the HAS_FCHOWN symbol, which
713 indicates to the C program that the fchown() routine is available
714 to change ownership of opened files.
717 This variable conditionally defines the HAS_FCNTL symbol, and indicates
718 whether the fcntl() function exists
720 d_fcntl_can_lock (d_fcntl_can_lock.U):
721 This variable conditionally defines the FCNTL_CAN_LOCK symbol
722 and indicates whether file locking with fcntl() works.
724 d_fd_macros (d_fd_set.U):
725 This variable contains the eventual value of the HAS_FD_MACROS symbol,
726 which indicates if your C compiler knows about the macros which
727 manipulate an fd_set.
729 d_fd_set (d_fd_set.U):
730 This variable contains the eventual value of the HAS_FD_SET symbol,
731 which indicates if your C compiler knows about the fd_set typedef.
733 d_fds_bits (d_fd_set.U):
734 This variable contains the eventual value of the HAS_FDS_BITS symbol,
735 which indicates if your fd_set typedef contains the fds_bits member.
736 If you have an fd_set typedef, but the dweebs who installed it did
737 a half-fast job and neglected to provide the macros to manipulate
738 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
740 d_fgetpos (d_fgetpos.U):
741 This variable conditionally defines HAS_FGETPOS if fgetpos() is
742 available to get the file position indicator.
744 d_finite (d_finite.U):
745 This variable conditionally defines the HAS_FINITE symbol, which
746 indicates to the C program that the finite() routine is available.
748 d_finitel (d_finitel.U):
749 This variable conditionally defines the HAS_FINITEL symbol, which
750 indicates to the C program that the finitel() routine is available.
752 d_flexfnam (d_flexfnam.U):
753 This variable conditionally defines the FLEXFILENAMES symbol, which
754 indicates that the system supports filenames longer than 14 characters.
757 This variable conditionally defines HAS_FLOCK if flock() is
758 available to do file locking.
760 d_flockproto (d_flockproto.U):
761 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
762 which indicates to the C program that the system provides
763 a prototype for the flock() function. Otherwise, it is
764 up to the program to supply one.
767 This variable conditionally defines the HAS_FORK symbol, which
768 indicates to the C program that the fork() routine is available.
770 d_fp_class (d_fp_class.U):
771 This variable conditionally defines the HAS_FP_CLASS symbol, which
772 indicates to the C program that the fp_class() routine is available.
774 d_fpathconf (d_pathconf.U):
775 This variable conditionally defines the HAS_FPATHCONF symbol, which
776 indicates to the C program that the pathconf() routine is available
777 to determine file-system related limits and options associated
778 with a given open file descriptor.
780 d_fpclass (d_fpclass.U):
781 This variable conditionally defines the HAS_FPCLASS symbol, which
782 indicates to the C program that the fpclass() routine is available.
784 d_fpclassify (d_fpclassify.U):
785 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
786 indicates to the C program that the fpclassify() routine is available.
788 d_fpclassl (d_fpclassl.U):
789 This variable conditionally defines the HAS_FPCLASSL symbol, which
790 indicates to the C program that the fpclassl() routine is available.
792 d_fpos64_t (d_fpos64_t.U):
793 This symbol will be defined if the C compiler supports fpos64_t.
795 d_frexpl (d_frexpl.U):
796 This variable conditionally defines the HAS_FREXPL symbol, which
797 indicates to the C program that the frexpl() routine is available.
799 d_fs_data_s (d_fs_data_s.U):
800 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
801 which indicates that the struct fs_data is supported.
803 d_fseeko (d_fseeko.U):
804 This variable conditionally defines the HAS_FSEEKO symbol, which
805 indicates to the C program that the fseeko() routine is available.
807 d_fsetpos (d_fsetpos.U):
808 This variable conditionally defines HAS_FSETPOS if fsetpos() is
809 available to set the file position indicator.
811 d_fstatfs (d_fstatfs.U):
812 This variable conditionally defines the HAS_FSTATFS symbol, which
813 indicates to the C program that the fstatfs() routine is available.
815 d_fstatvfs (d_statvfs.U):
816 This variable conditionally defines the HAS_FSTATVFS symbol, which
817 indicates to the C program that the fstatvfs() routine is available.
820 This variable conditionally defines the HAS_FSYNC symbol, which
821 indicates to the C program that the fsync() routine is available.
823 d_ftello (d_ftello.U):
824 This variable conditionally defines the HAS_FTELLO symbol, which
825 indicates to the C program that the ftello() routine is available.
828 This variable conditionally defines the HAS_FTIME symbol, which indicates
829 that the ftime() routine exists. The ftime() routine is basically
830 a sub-second accuracy clock.
832 d_futimes (d_futimes.U):
833 This variable conditionally defines the HAS_FUTIMES symbol, which
834 indicates to the C program that the futimes() routine is available.
836 d_Gconvert (d_gconvert.U):
837 This variable holds what Gconvert is defined as to convert
838 floating point numbers into strings. By default, Configure
839 sets this macro to use the first of gconvert, gcvt, or sprintf
840 that pass sprintf-%g-like behaviour tests. If perl is using
841 long doubles, the macro uses the first of the following
842 functions that pass Configure's tests: qgcvt, sprintf (if
843 Configure knows how to make sprintf format long doubles--see
844 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
845 The gconvert_preference and gconvert_ld_preference variables
846 can be used to alter Configure's preferences, for doubles and
847 long doubles, respectively. If present, they contain a
848 space-separated list of one or more of the above function
849 names in the order they should be tried.
851 d_Gconvert may be set to override Configure with a platform-
852 specific function. If this function expects a double, a
853 different value may need to be set by the uselongdouble.cbu
854 call-back unit so that long doubles can be formatted without
857 d_getcwd (d_getcwd.U):
858 This variable conditionally defines the HAS_GETCWD symbol, which
859 indicates to the C program that the getcwd() routine is available
860 to get the current working directory.
862 d_getespwnam (d_getespwnam.U):
863 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
864 available to retrieve enchanced (shadow) password entries by name.
866 d_getfsstat (d_getfsstat.U):
867 This variable conditionally defines the HAS_GETFSSTAT symbol, which
868 indicates to the C program that the getfsstat() routine is available.
870 d_getgrent (d_getgrent.U):
871 This variable conditionally defines the HAS_GETGRENT symbol, which
872 indicates to the C program that the getgrent() routine is available
873 for sequential access of the group database.
875 d_getgrent_r (d_getgrent_r.U):
876 This variable conditionally defines the HAS_GETGRENT_R symbol,
877 which indicates to the C program that the getgrent_r()
878 routine is available.
880 d_getgrgid_r (d_getgrgid_r.U):
881 This variable conditionally defines the HAS_GETGRGID_R symbol,
882 which indicates to the C program that the getgrgid_r()
883 routine is available.
885 d_getgrnam_r (d_getgrnam_r.U):
886 This variable conditionally defines the HAS_GETGRNAM_R symbol,
887 which indicates to the C program that the getgrnam_r()
888 routine is available.
890 d_getgrps (d_getgrps.U):
891 This variable conditionally defines the HAS_GETGROUPS symbol, which
892 indicates to the C program that the getgroups() routine is available
893 to get the list of process groups.
895 d_gethbyaddr (d_gethbyad.U):
896 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
897 indicates to the C program that the gethostbyaddr() routine is available
898 to look up hosts by their IP addresses.
900 d_gethbyname (d_gethbynm.U):
901 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
902 indicates to the C program that the gethostbyname() routine is available
903 to look up host names in some data base or other.
905 d_gethent (d_gethent.U):
906 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
907 available to look up host names in some data base or another.
909 d_gethname (d_gethname.U):
910 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
911 indicates to the C program that the gethostname() routine may be
912 used to derive the host name.
914 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
915 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
916 which indicates to the C program that the gethostbyaddr_r()
917 routine is available.
919 d_gethostbyname_r (d_gethostbyname_r.U):
920 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
921 which indicates to the C program that the gethostbyname_r()
922 routine is available.
924 d_gethostent_r (d_gethostent_r.U):
925 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
926 which indicates to the C program that the gethostent_r()
927 routine is available.
929 d_gethostprotos (d_gethostprotos.U):
930 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
931 which indicates to the C program that <netdb.h> supplies
932 prototypes for the various gethost*() functions.
933 See also netdbtype.U for probing for various netdb types.
935 d_getitimer (d_getitimer.U):
936 This variable conditionally defines the HAS_GETITIMER symbol, which
937 indicates to the C program that the getitimer() routine is available.
939 d_getlogin (d_getlogin.U):
940 This variable conditionally defines the HAS_GETLOGIN symbol, which
941 indicates to the C program that the getlogin() routine is available
942 to get the login name.
944 d_getlogin_r (d_getlogin_r.U):
945 This variable conditionally defines the HAS_GETLOGIN_R symbol,
946 which indicates to the C program that the getlogin_r()
947 routine is available.
949 d_getmnt (d_getmnt.U):
950 This variable conditionally defines the HAS_GETMNT symbol, which
951 indicates to the C program that the getmnt() routine is available
952 to retrieve one or more mount info blocks by filename.
954 d_getmntent (d_getmntent.U):
955 This variable conditionally defines the HAS_GETMNTENT symbol, which
956 indicates to the C program that the getmntent() routine is available
957 to iterate through mounted files to get their mount info.
959 d_getnbyaddr (d_getnbyad.U):
960 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
961 indicates to the C program that the getnetbyaddr() routine is available
962 to look up networks by their IP addresses.
964 d_getnbyname (d_getnbynm.U):
965 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
966 indicates to the C program that the getnetbyname() routine is available
967 to look up networks by their names.
969 d_getnent (d_getnent.U):
970 This variable conditionally defines HAS_GETNETENT if getnetent() is
971 available to look up network names in some data base or another.
973 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
974 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
975 which indicates to the C program that the getnetbyaddr_r()
976 routine is available.
978 d_getnetbyname_r (d_getnetbyname_r.U):
979 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
980 which indicates to the C program that the getnetbyname_r()
981 routine is available.
983 d_getnetent_r (d_getnetent_r.U):
984 This variable conditionally defines the HAS_GETNETENT_R symbol,
985 which indicates to the C program that the getnetent_r()
986 routine is available.
988 d_getnetprotos (d_getnetprotos.U):
989 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
990 which indicates to the C program that <netdb.h> supplies
991 prototypes for the various getnet*() functions.
992 See also netdbtype.U for probing for various netdb types.
994 d_getpagsz (d_getpagsz.U):
995 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
996 is available to get the system page size.
998 d_getpbyname (d_getprotby.U):
999 This variable conditionally defines the HAS_GETPROTOBYNAME
1000 symbol, which indicates to the C program that the
1001 getprotobyname() routine is available to look up protocols
1004 d_getpbynumber (d_getprotby.U):
1005 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1006 symbol, which indicates to the C program that the
1007 getprotobynumber() routine is available to look up protocols
1010 d_getpent (d_getpent.U):
1011 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1012 available to look up protocols in some data base or another.
1014 d_getpgid (d_getpgid.U):
1015 This variable conditionally defines the HAS_GETPGID symbol, which
1016 indicates to the C program that the getpgid(pid) function
1017 is available to get the process group id.
1019 d_getpgrp (d_getpgrp.U):
1020 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1021 available to get the current process group.
1023 d_getpgrp2 (d_getpgrp2.U):
1024 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1025 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1026 is available to get the current process group.
1028 d_getppid (d_getppid.U):
1029 This variable conditionally defines the HAS_GETPPID symbol, which
1030 indicates to the C program that the getppid() routine is available
1031 to get the parent process ID.
1033 d_getprior (d_getprior.U):
1034 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1035 is available to get a process's priority.
1037 d_getprotobyname_r (d_getprotobyname_r.U):
1038 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1039 which indicates to the C program that the getprotobyname_r()
1040 routine is available.
1042 d_getprotobynumber_r (d_getprotobynumber_r.U):
1043 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1044 which indicates to the C program that the getprotobynumber_r()
1045 routine is available.
1047 d_getprotoent_r (d_getprotoent_r.U):
1048 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1049 which indicates to the C program that the getprotoent_r()
1050 routine is available.
1052 d_getprotoprotos (d_getprotoprotos.U):
1053 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1054 which indicates to the C program that <netdb.h> supplies
1055 prototypes for the various getproto*() functions.
1056 See also netdbtype.U for probing for various netdb types.
1058 d_getprpwnam (d_getprpwnam.U):
1059 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1060 available to retrieve protected (shadow) password entries by name.
1062 d_getpwent (d_getpwent.U):
1063 This variable conditionally defines the HAS_GETPWENT symbol, which
1064 indicates to the C program that the getpwent() routine is available
1065 for sequential access of the passwd database.
1067 d_getpwent_r (d_getpwent_r.U):
1068 This variable conditionally defines the HAS_GETPWENT_R symbol,
1069 which indicates to the C program that the getpwent_r()
1070 routine is available.
1072 d_getpwnam_r (d_getpwnam_r.U):
1073 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1074 which indicates to the C program that the getpwnam_r()
1075 routine is available.
1077 d_getpwuid_r (d_getpwuid_r.U):
1078 This variable conditionally defines the HAS_GETPWUID_R symbol,
1079 which indicates to the C program that the getpwuid_r()
1080 routine is available.
1082 d_getsbyname (d_getsrvby.U):
1083 This variable conditionally defines the HAS_GETSERVBYNAME
1084 symbol, which indicates to the C program that the
1085 getservbyname() routine is available to look up services
1088 d_getsbyport (d_getsrvby.U):
1089 This variable conditionally defines the HAS_GETSERVBYPORT
1090 symbol, which indicates to the C program that the
1091 getservbyport() routine is available to look up services
1094 d_getsent (d_getsent.U):
1095 This variable conditionally defines HAS_GETSERVENT if getservent() is
1096 available to look up network services in some data base or another.
1098 d_getservbyname_r (d_getservbyname_r.U):
1099 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1100 which indicates to the C program that the getservbyname_r()
1101 routine is available.
1103 d_getservbyport_r (d_getservbyport_r.U):
1104 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1105 which indicates to the C program that the getservbyport_r()
1106 routine is available.
1108 d_getservent_r (d_getservent_r.U):
1109 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1110 which indicates to the C program that the getservent_r()
1111 routine is available.
1113 d_getservprotos (d_getservprotos.U):
1114 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1115 which indicates to the C program that <netdb.h> supplies
1116 prototypes for the various getserv*() functions.
1117 See also netdbtype.U for probing for various netdb types.
1119 d_getspnam (d_getspnam.U):
1120 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1121 available to retrieve SysV shadow password entries by name.
1123 d_getspnam_r (d_getspnam_r.U):
1124 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1125 which indicates to the C program that the getspnam_r()
1126 routine is available.
1128 d_gettimeod (d_ftime.U):
1129 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1130 indicates that the gettimeofday() system call exists (to obtain a
1131 sub-second accuracy clock). You should probably include <sys/resource.h>.
1133 d_gmtime_r (d_gmtime_r.U):
1134 This variable conditionally defines the HAS_GMTIME_R symbol,
1135 which indicates to the C program that the gmtime_r()
1136 routine is available.
1138 d_gnulibc (d_gnulibc.U):
1139 Defined if we're dealing with the GNU C Library.
1141 d_grpasswd (i_grp.U):
1142 This variable conditionally defines GRPASSWD, which indicates
1143 that struct group in <grp.h> contains gr_passwd.
1145 d_hasmntopt (d_hasmntopt.U):
1146 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1147 indicates to the C program that the hasmntopt() routine is available
1148 to query the mount options of file systems.
1150 d_htonl (d_htonl.U):
1151 This variable conditionally defines HAS_HTONL if htonl() and its
1152 friends are available to do network order byte swapping.
1154 d_ilogbl (d_ilogbl.U):
1155 This variable conditionally defines the HAS_ILOGBL symbol, which
1156 indicates to the C program that the ilogbl() routine is available.
1157 If scalbnl is also present we can emulate frexpl.
1159 d_inc_version_list (inc_version_list.U):
1160 This variable conditionally defines PERL_INC_VERSION_LIST.
1161 It is set to undef when PERL_INC_VERSION_LIST is empty.
1163 d_index (d_strchr.U):
1164 This variable conditionally defines HAS_INDEX if index() and
1165 rindex() are available for string searching.
1167 d_inetaton (d_inetaton.U):
1168 This variable conditionally defines the HAS_INET_ATON symbol, which
1169 indicates to the C program that the inet_aton() function is available
1170 to parse IP address "dotted-quad" strings.
1172 d_int64_t (d_int64_t.U):
1173 This symbol will be defined if the C compiler supports int64_t.
1175 d_isascii (d_isascii.U):
1176 This variable conditionally defines the HAS_ISASCII constant,
1177 which indicates to the C program that isascii() is available.
1179 d_isfinite (d_isfinite.U):
1180 This variable conditionally defines the HAS_ISFINITE symbol, which
1181 indicates to the C program that the isfinite() routine is available.
1183 d_isinf (d_isinf.U):
1184 This variable conditionally defines the HAS_ISINF symbol, which
1185 indicates to the C program that the isinf() routine is available.
1187 d_isnan (d_isnan.U):
1188 This variable conditionally defines the HAS_ISNAN symbol, which
1189 indicates to the C program that the isnan() routine is available.
1191 d_isnanl (d_isnanl.U):
1192 This variable conditionally defines the HAS_ISNANL symbol, which
1193 indicates to the C program that the isnanl() routine is available.
1195 d_killpg (d_killpg.U):
1196 This variable conditionally defines the HAS_KILLPG symbol, which
1197 indicates to the C program that the killpg() routine is available
1198 to kill process groups.
1200 d_lchown (d_lchown.U):
1201 This variable conditionally defines the HAS_LCHOWN symbol, which
1202 indicates to the C program that the lchown() routine is available
1203 to operate on a symbolic link (instead of following the link).
1205 d_ldbl_dig (d_ldbl_dig.U):
1206 This variable conditionally defines d_ldbl_dig if this system's
1207 header files provide LDBL_DIG, which is the number of significant
1208 digits in a long double precision number.
1210 d_libm_lib_version (d_libm_lib_version.U):
1211 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1212 which indicates to the C program that math.h defines _LIB_VERSION
1213 being available in libm
1216 This variable conditionally defines HAS_LINK if link() is
1217 available to create hard links.
1219 d_localtime_r (d_localtime_r.U):
1220 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1221 which indicates to the C program that the localtime_r()
1222 routine is available.
1224 d_locconv (d_locconv.U):
1225 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1226 available for numeric and monetary formatting conventions.
1228 d_lockf (d_lockf.U):
1229 This variable conditionally defines HAS_LOCKF if lockf() is
1230 available to do file locking.
1232 d_longdbl (d_longdbl.U):
1233 This variable conditionally defines HAS_LONG_DOUBLE if
1234 the long double type is supported.
1236 d_longlong (d_longlong.U):
1237 This variable conditionally defines HAS_LONG_LONG if
1238 the long long type is supported.
1240 d_lseekproto (d_lseekproto.U):
1241 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1242 which indicates to the C program that the system provides
1243 a prototype for the lseek() function. Otherwise, it is
1244 up to the program to supply one.
1246 d_lstat (d_lstat.U):
1247 This variable conditionally defines HAS_LSTAT if lstat() is
1248 available to do file stats on symbolic links.
1250 d_madvise (d_madvise.U):
1251 This variable conditionally defines HAS_MADVISE if madvise() is
1252 available to map a file into memory.
1254 d_malloc_good_size (d_malloc_size.U):
1255 This symbol, if defined, indicates that the malloc_good_size
1256 routine is available for use.
1258 d_malloc_size (d_malloc_size.U):
1259 This symbol, if defined, indicates that the malloc_size
1260 routine is available for use.
1262 d_mblen (d_mblen.U):
1263 This variable conditionally defines the HAS_MBLEN symbol, which
1264 indicates to the C program that the mblen() routine is available
1265 to find the number of bytes in a multibye character.
1267 d_mbstowcs (d_mbstowcs.U):
1268 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1269 indicates to the C program that the mbstowcs() routine is available
1270 to convert a multibyte string into a wide character string.
1272 d_mbtowc (d_mbtowc.U):
1273 This variable conditionally defines the HAS_MBTOWC symbol, which
1274 indicates to the C program that the mbtowc() routine is available
1275 to convert multibyte to a wide character.
1277 d_memchr (d_memchr.U):
1278 This variable conditionally defines the HAS_MEMCHR symbol, which
1279 indicates to the C program that the memchr() routine is available
1280 to locate characters within a C string.
1282 d_memcmp (d_memcmp.U):
1283 This variable conditionally defines the HAS_MEMCMP symbol, which
1284 indicates to the C program that the memcmp() routine is available
1285 to compare blocks of memory.
1287 d_memcpy (d_memcpy.U):
1288 This variable conditionally defines the HAS_MEMCPY symbol, which
1289 indicates to the C program that the memcpy() routine is available
1290 to copy blocks of memory.
1292 d_memmove (d_memmove.U):
1293 This variable conditionally defines the HAS_MEMMOVE symbol, which
1294 indicates to the C program that the memmove() routine is available
1295 to copy potentatially overlapping blocks of memory.
1297 d_memset (d_memset.U):
1298 This variable conditionally defines the HAS_MEMSET symbol, which
1299 indicates to the C program that the memset() routine is available
1300 to set blocks of memory.
1302 d_mkdir (d_mkdir.U):
1303 This variable conditionally defines the HAS_MKDIR symbol, which
1304 indicates to the C program that the mkdir() routine is available
1305 to create directories..
1307 d_mkdtemp (d_mkdtemp.U):
1308 This variable conditionally defines the HAS_MKDTEMP symbol, which
1309 indicates to the C program that the mkdtemp() routine is available
1310 to exclusively create a uniquely named temporary directory.
1312 d_mkfifo (d_mkfifo.U):
1313 This variable conditionally defines the HAS_MKFIFO symbol, which
1314 indicates to the C program that the mkfifo() routine is available.
1316 d_mkstemp (d_mkstemp.U):
1317 This variable conditionally defines the HAS_MKSTEMP symbol, which
1318 indicates to the C program that the mkstemp() routine is available
1319 to exclusively create and open a uniquely named temporary file.
1321 d_mkstemps (d_mkstemps.U):
1322 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1323 indicates to the C program that the mkstemps() routine is available
1324 to exclusively create and open a uniquely named (with a suffix)
1327 d_mktime (d_mktime.U):
1328 This variable conditionally defines the HAS_MKTIME symbol, which
1329 indicates to the C program that the mktime() routine is available.
1332 This variable conditionally defines HAS_MMAP if mmap() is
1333 available to map a file into memory.
1335 d_modfl (d_modfl.U):
1336 This variable conditionally defines the HAS_MODFL symbol, which
1337 indicates to the C program that the modfl() routine is available.
1339 d_modfl_pow32_bug (d_modfl.U):
1340 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1341 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1342 For example from 4294967303.150000 one would get 4294967302.000000
1343 and 1.150000. The bug has been seen in certain versions of glibc,
1344 release 2.2.2 is known to be okay.
1346 d_modflproto (d_modfl.U):
1347 This symbol, if defined, indicates that the system provides
1348 a prototype for the modfl() function. Otherwise, it is up
1349 to the program to supply one. C99 says it should be
1350 long double modfl(long double, long double *);
1352 d_mprotect (d_mprotect.U):
1353 This variable conditionally defines HAS_MPROTECT if mprotect() is
1354 available to modify the access protection of a memory mapped file.
1357 This variable conditionally defines the HAS_MSG symbol, which
1358 indicates that the entire msg*(2) library is present.
1360 d_msg_ctrunc (d_socket.U):
1361 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1362 which indicates that the MSG_CTRUNC is available. #ifdef is
1363 not enough because it may be an enum, glibc has been known to do this.
1365 d_msg_dontroute (d_socket.U):
1366 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1367 which indicates that the MSG_DONTROUTE is available. #ifdef is
1368 not enough because it may be an enum, glibc has been known to do this.
1370 d_msg_oob (d_socket.U):
1371 This variable conditionally defines the HAS_MSG_OOB symbol,
1372 which indicates that the MSG_OOB is available. #ifdef is
1373 not enough because it may be an enum, glibc has been known to do this.
1375 d_msg_peek (d_socket.U):
1376 This variable conditionally defines the HAS_MSG_PEEK symbol,
1377 which indicates that the MSG_PEEK is available. #ifdef is
1378 not enough because it may be an enum, glibc has been known to do this.
1380 d_msg_proxy (d_socket.U):
1381 This variable conditionally defines the HAS_MSG_PROXY symbol,
1382 which indicates that the MSG_PROXY is available. #ifdef is
1383 not enough because it may be an enum, glibc has been known to do this.
1385 d_msgctl (d_msgctl.U):
1386 This variable conditionally defines the HAS_MSGCTL symbol, which
1387 indicates to the C program that the msgctl() routine is available.
1389 d_msgget (d_msgget.U):
1390 This variable conditionally defines the HAS_MSGGET symbol, which
1391 indicates to the C program that the msgget() routine is available.
1393 d_msghdr_s (d_msghdr_s.U):
1394 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1395 which indicates that the struct msghdr is supported.
1397 d_msgrcv (d_msgrcv.U):
1398 This variable conditionally defines the HAS_MSGRCV symbol, which
1399 indicates to the C program that the msgrcv() routine is available.
1401 d_msgsnd (d_msgsnd.U):
1402 This variable conditionally defines the HAS_MSGSND symbol, which
1403 indicates to the C program that the msgsnd() routine is available.
1405 d_msync (d_msync.U):
1406 This variable conditionally defines HAS_MSYNC if msync() is
1407 available to synchronize a mapped file.
1409 d_munmap (d_munmap.U):
1410 This variable conditionally defines HAS_MUNMAP if munmap() is
1411 available to unmap a region mapped by mmap().
1413 d_mymalloc (mallocsrc.U):
1414 This variable conditionally defines MYMALLOC in case other parts
1415 of the source want to take special action if MYMALLOC is used.
1416 This may include different sorts of profiling or error detection.
1419 This variable conditionally defines the HAS_NICE symbol, which
1420 indicates to the C program that the nice() routine is available.
1422 d_nl_langinfo (d_nl_langinfo.U):
1423 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1424 indicates to the C program that the nl_langinfo() routine is available.
1426 d_nv_preserves_uv (perlxv.U):
1427 This variable indicates whether a variable of type nvtype
1428 can preserve all the bits a variable of type uvtype.
1430 d_nv_zero_is_allbits_zero (perlxv.U):
1431 This variable indicates whether a variable of type nvtype
1432 stores 0.0 in memory as all bits zero.
1434 d_off64_t (d_off64_t.U):
1435 This symbol will be defined if the C compiler supports off64_t.
1437 d_old_pthread_create_joinable (d_pthrattrj.U):
1438 This variable conditionally defines pthread_create_joinable.
1439 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1441 d_oldpthreads (usethreads.U):
1442 This variable conditionally defines the OLD_PTHREADS_API symbol,
1443 and indicates that Perl should be built to use the old
1444 draft POSIX threads API. This is only potentially meaningful if
1447 d_oldsock (d_socket.U):
1448 This variable conditionally defines the OLDSOCKET symbol, which
1449 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1451 d_open3 (d_open3.U):
1452 This variable conditionally defines the HAS_OPEN3 manifest constant,
1453 which indicates to the C program that the 3 argument version of
1454 the open(2) function is available.
1456 d_pathconf (d_pathconf.U):
1457 This variable conditionally defines the HAS_PATHCONF symbol, which
1458 indicates to the C program that the pathconf() routine is available
1459 to determine file-system related limits and options associated
1460 with a given filename.
1462 d_pause (d_pause.U):
1463 This variable conditionally defines the HAS_PAUSE symbol, which
1464 indicates to the C program that the pause() routine is available
1465 to suspend a process until a signal is received.
1467 d_perl_otherlibdirs (otherlibdirs.U):
1468 This variable conditionally defines PERL_OTHERLIBDIRS, which
1469 contains a colon-separated set of paths for the perl binary to
1470 include in @INC. See also otherlibdirs.
1472 d_phostname (d_gethname.U):
1473 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1474 contains the shell command which, when fed to popen(), may be
1475 used to derive the host name.
1478 This variable conditionally defines the HAS_PIPE symbol, which
1479 indicates to the C program that the pipe() routine is available
1480 to create an inter-process channel.
1483 This variable conditionally defines the HAS_POLL symbol, which
1484 indicates to the C program that the poll() routine is available
1485 to poll active file descriptors.
1487 d_portable (d_portable.U):
1488 This variable conditionally defines the PORTABLE symbol, which
1489 indicates to the C program that it should not assume that it is
1490 running on the machine it was compiled on.
1492 d_PRId64 (quadfio.U):
1493 This variable conditionally defines the PERL_PRId64 symbol, which
1494 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1496 d_PRIeldbl (longdblfio.U):
1497 This variable conditionally defines the PERL_PRIfldbl symbol, which
1498 indiciates that stdio has a symbol to print long doubles.
1500 d_PRIEUldbl (longdblfio.U):
1501 This variable conditionally defines the PERL_PRIfldbl symbol, which
1502 indiciates that stdio has a symbol to print long doubles.
1503 The 'U' in the name is to separate this from d_PRIeldbl so that even
1504 case-blind systems can see the difference.
1506 d_PRIfldbl (longdblfio.U):
1507 This variable conditionally defines the PERL_PRIfldbl symbol, which
1508 indiciates that stdio has a symbol to print long doubles.
1510 d_PRIFUldbl (longdblfio.U):
1511 This variable conditionally defines the PERL_PRIfldbl symbol, which
1512 indiciates that stdio has a symbol to print long doubles.
1513 The 'U' in the name is to separate this from d_PRIfldbl so that even
1514 case-blind systems can see the difference.
1516 d_PRIgldbl (longdblfio.U):
1517 This variable conditionally defines the PERL_PRIfldbl symbol, which
1518 indiciates that stdio has a symbol to print long doubles.
1520 d_PRIGUldbl (longdblfio.U):
1521 This variable conditionally defines the PERL_PRIfldbl symbol, which
1522 indiciates that stdio has a symbol to print long doubles.
1523 The 'U' in the name is to separate this from d_PRIgldbl so that even
1524 case-blind systems can see the difference.
1526 d_PRIi64 (quadfio.U):
1527 This variable conditionally defines the PERL_PRIi64 symbol, which
1528 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1530 d_PRIo64 (quadfio.U):
1531 This variable conditionally defines the PERL_PRIo64 symbol, which
1532 indiciates that stdio has a symbol to print 64-bit octal numbers.
1534 d_PRIu64 (quadfio.U):
1535 This variable conditionally defines the PERL_PRIu64 symbol, which
1536 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1539 d_PRIx64 (quadfio.U):
1540 This variable conditionally defines the PERL_PRIx64 symbol, which
1541 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1543 d_PRIXU64 (quadfio.U):
1544 This variable conditionally defines the PERL_PRIXU64 symbol, which
1545 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1546 The 'U' in the name is to separate this from d_PRIx64 so that even
1547 case-blind systems can see the difference.
1549 d_procselfexe (d_procselfexe.U):
1550 Defined if $procselfexe is symlink to the absolute
1551 pathname of the executing program.
1553 d_pthread_atfork (d_pthread_atfork.U):
1554 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1555 which indicates to the C program that the pthread_atfork()
1556 routine is available.
1558 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1559 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1560 pthread_attr_setscope() is available to set the contention scope
1561 attribute of a thread attribute object.
1563 d_pthread_yield (d_pthread_y.U):
1564 This variable conditionally defines the HAS_PTHREAD_YIELD
1565 symbol if the pthread_yield routine is available to yield
1566 the execution of the current thread.
1569 This variable conditionally defines PWAGE, which indicates
1570 that struct passwd contains pw_age.
1572 d_pwchange (i_pwd.U):
1573 This variable conditionally defines PWCHANGE, which indicates
1574 that struct passwd contains pw_change.
1576 d_pwclass (i_pwd.U):
1577 This variable conditionally defines PWCLASS, which indicates
1578 that struct passwd contains pw_class.
1580 d_pwcomment (i_pwd.U):
1581 This variable conditionally defines PWCOMMENT, which indicates
1582 that struct passwd contains pw_comment.
1584 d_pwexpire (i_pwd.U):
1585 This variable conditionally defines PWEXPIRE, which indicates
1586 that struct passwd contains pw_expire.
1588 d_pwgecos (i_pwd.U):
1589 This variable conditionally defines PWGECOS, which indicates
1590 that struct passwd contains pw_gecos.
1592 d_pwpasswd (i_pwd.U):
1593 This variable conditionally defines PWPASSWD, which indicates
1594 that struct passwd contains pw_passwd.
1596 d_pwquota (i_pwd.U):
1597 This variable conditionally defines PWQUOTA, which indicates
1598 that struct passwd contains pw_quota.
1600 d_qgcvt (d_qgcvt.U):
1601 This variable conditionally defines the HAS_QGCVT symbol, which
1602 indicates to the C program that the qgcvt() routine is available.
1604 d_quad (quadtype.U):
1605 This variable, if defined, tells that there's a 64-bit integer type,
1608 d_random_r (d_random_r.U):
1609 This variable conditionally defines the HAS_RANDOM_R symbol,
1610 which indicates to the C program that the random_r()
1611 routine is available.
1613 d_readdir (d_readdir.U):
1614 This variable conditionally defines HAS_READDIR if readdir() is
1615 available to read directory entries.
1617 d_readdir64_r (d_readdir64_r.U):
1618 This variable conditionally defines the HAS_READDIR64_R symbol,
1619 which indicates to the C program that the readdir64_r()
1620 routine is available.
1622 d_readdir_r (d_readdir_r.U):
1623 This variable conditionally defines the HAS_READDIR_R symbol,
1624 which indicates to the C program that the readdir_r()
1625 routine is available.
1627 d_readlink (d_readlink.U):
1628 This variable conditionally defines the HAS_READLINK symbol, which
1629 indicates to the C program that the readlink() routine is available
1630 to read the value of a symbolic link.
1632 d_readv (d_readv.U):
1633 This variable conditionally defines the HAS_READV symbol, which
1634 indicates to the C program that the readv() routine is available.
1636 d_recvmsg (d_recvmsg.U):
1637 This variable conditionally defines the HAS_RECVMSG symbol, which
1638 indicates to the C program that the recvmsg() routine is available.
1640 d_rename (d_rename.U):
1641 This variable conditionally defines the HAS_RENAME symbol, which
1642 indicates to the C program that the rename() routine is available
1645 d_rewinddir (d_readdir.U):
1646 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1649 d_rmdir (d_rmdir.U):
1650 This variable conditionally defines HAS_RMDIR if rmdir() is
1651 available to remove directories.
1653 d_safebcpy (d_safebcpy.U):
1654 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1655 the bcopy() routine can do overlapping copies. Normally, you
1656 should probably use memmove().
1658 d_safemcpy (d_safemcpy.U):
1659 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1660 the memcpy() routine can do overlapping copies.
1661 For overlapping copies, memmove() should be used, if available.
1663 d_sanemcmp (d_sanemcmp.U):
1664 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1665 the memcpy() routine is available and can be used to compare relative
1666 magnitudes of chars with their high bits set.
1668 d_sbrkproto (d_sbrkproto.U):
1669 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1670 which indicates to the C program that the system provides
1671 a prototype for the sbrk() function. Otherwise, it is
1672 up to the program to supply one.
1674 d_scalbnl (d_scalbnl.U):
1675 This variable conditionally defines the HAS_SCALBNL symbol, which
1676 indicates to the C program that the scalbnl() routine is available.
1677 If ilogbl is also present we can emulate frexpl.
1679 d_sched_yield (d_pthread_y.U):
1680 This variable conditionally defines the HAS_SCHED_YIELD
1681 symbol if the sched_yield routine is available to yield
1682 the execution of the current thread.
1684 d_scm_rights (d_socket.U):
1685 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1686 which indicates that the SCM_RIGHTS is available. #ifdef is
1687 not enough because it may be an enum, glibc has been known to do this.
1689 d_SCNfldbl (longdblfio.U):
1690 This variable conditionally defines the PERL_PRIfldbl symbol, which
1691 indiciates that stdio has a symbol to scan long doubles.
1693 d_seekdir (d_readdir.U):
1694 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1697 d_select (d_select.U):
1698 This variable conditionally defines HAS_SELECT if select() is
1699 available to select active file descriptors. A <sys/time.h>
1700 inclusion may be necessary for the timeout field.
1703 This variable conditionally defines the HAS_SEM symbol, which
1704 indicates that the entire sem*(2) library is present.
1706 d_semctl (d_semctl.U):
1707 This variable conditionally defines the HAS_SEMCTL symbol, which
1708 indicates to the C program that the semctl() routine is available.
1710 d_semctl_semid_ds (d_union_semun.U):
1711 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1712 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1714 d_semctl_semun (d_union_semun.U):
1715 This variable conditionally defines USE_SEMCTL_SEMUN, which
1716 indicates that union semun is to be used for semctl IPC_STAT.
1718 d_semget (d_semget.U):
1719 This variable conditionally defines the HAS_SEMGET symbol, which
1720 indicates to the C program that the semget() routine is available.
1722 d_semop (d_semop.U):
1723 This variable conditionally defines the HAS_SEMOP symbol, which
1724 indicates to the C program that the semop() routine is available.
1726 d_sendmsg (d_sendmsg.U):
1727 This variable conditionally defines the HAS_SENDMSG symbol, which
1728 indicates to the C program that the sendmsg() routine is available.
1730 d_setegid (d_setegid.U):
1731 This variable conditionally defines the HAS_SETEGID symbol, which
1732 indicates to the C program that the setegid() routine is available
1733 to change the effective gid of the current program.
1735 d_seteuid (d_seteuid.U):
1736 This variable conditionally defines the HAS_SETEUID symbol, which
1737 indicates to the C program that the seteuid() routine is available
1738 to change the effective uid of the current program.
1740 d_setgrent (d_setgrent.U):
1741 This variable conditionally defines the HAS_SETGRENT symbol, which
1742 indicates to the C program that the setgrent() routine is available
1743 for initializing sequential access to the group database.
1745 d_setgrent_r (d_setgrent_r.U):
1746 This variable conditionally defines the HAS_SETGRENT_R symbol,
1747 which indicates to the C program that the setgrent_r()
1748 routine is available.
1750 d_setgrps (d_setgrps.U):
1751 This variable conditionally defines the HAS_SETGROUPS symbol, which
1752 indicates to the C program that the setgroups() routine is available
1753 to set the list of process groups.
1755 d_sethent (d_sethent.U):
1756 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1759 d_sethostent_r (d_sethostent_r.U):
1760 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1761 which indicates to the C program that the sethostent_r()
1762 routine is available.
1764 d_setitimer (d_setitimer.U):
1765 This variable conditionally defines the HAS_SETITIMER symbol, which
1766 indicates to the C program that the setitimer() routine is available.
1768 d_setlinebuf (d_setlnbuf.U):
1769 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1770 indicates to the C program that the setlinebuf() routine is available
1771 to change stderr or stdout from block-buffered or unbuffered to a
1774 d_setlocale (d_setlocale.U):
1775 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1776 available to handle locale-specific ctype implementations.
1778 d_setlocale_r (d_setlocale_r.U):
1779 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1780 which indicates to the C program that the setlocale_r()
1781 routine is available.
1783 d_setnent (d_setnent.U):
1784 This variable conditionally defines HAS_SETNETENT if setnetent() is
1787 d_setnetent_r (d_setnetent_r.U):
1788 This variable conditionally defines the HAS_SETNETENT_R symbol,
1789 which indicates to the C program that the setnetent_r()
1790 routine is available.
1792 d_setpent (d_setpent.U):
1793 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1796 d_setpgid (d_setpgid.U):
1797 This variable conditionally defines the HAS_SETPGID symbol if the
1798 setpgid(pid, gpid) function is available to set process group ID.
1800 d_setpgrp (d_setpgrp.U):
1801 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1802 available to set the current process group.
1804 d_setpgrp2 (d_setpgrp2.U):
1805 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1806 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1807 is available to set the current process group.
1809 d_setprior (d_setprior.U):
1810 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1811 is available to set a process's priority.
1813 d_setproctitle (d_setproctitle.U):
1814 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1815 which indicates to the C program that the setproctitle() routine
1818 d_setprotoent_r (d_setprotoent_r.U):
1819 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1820 which indicates to the C program that the setprotoent_r()
1821 routine is available.
1823 d_setpwent (d_setpwent.U):
1824 This variable conditionally defines the HAS_SETPWENT symbol, which
1825 indicates to the C program that the setpwent() routine is available
1826 for initializing sequential access to the passwd database.
1828 d_setpwent_r (d_setpwent_r.U):
1829 This variable conditionally defines the HAS_SETPWENT_R symbol,
1830 which indicates to the C program that the setpwent_r()
1831 routine is available.
1833 d_setregid (d_setregid.U):
1834 This variable conditionally defines HAS_SETREGID if setregid() is
1835 available to change the real and effective gid of the current
1838 d_setresgid (d_setregid.U):
1839 This variable conditionally defines HAS_SETRESGID if setresgid() is
1840 available to change the real, effective and saved gid of the current
1843 d_setresuid (d_setreuid.U):
1844 This variable conditionally defines HAS_SETREUID if setresuid() is
1845 available to change the real, effective and saved uid of the current
1848 d_setreuid (d_setreuid.U):
1849 This variable conditionally defines HAS_SETREUID if setreuid() is
1850 available to change the real and effective uid of the current
1853 d_setrgid (d_setrgid.U):
1854 This variable conditionally defines the HAS_SETRGID symbol, which
1855 indicates to the C program that the setrgid() routine is available
1856 to change the real gid of the current program.
1858 d_setruid (d_setruid.U):
1859 This variable conditionally defines the HAS_SETRUID symbol, which
1860 indicates to the C program that the setruid() routine is available
1861 to change the real uid of the current program.
1863 d_setsent (d_setsent.U):
1864 This variable conditionally defines HAS_SETSERVENT if setservent() is
1867 d_setservent_r (d_setservent_r.U):
1868 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1869 which indicates to the C program that the setservent_r()
1870 routine is available.
1872 d_setsid (d_setsid.U):
1873 This variable conditionally defines HAS_SETSID if setsid() is
1874 available to set the process group ID.
1876 d_setvbuf (d_setvbuf.U):
1877 This variable conditionally defines the HAS_SETVBUF symbol, which
1878 indicates to the C program that the setvbuf() routine is available
1879 to change buffering on an open stdio stream.
1882 This variable conditionally defines the USE_SFIO symbol,
1883 and indicates whether sfio is available (and should be used).
1886 This variable conditionally defines the HAS_SHM symbol, which
1887 indicates that the entire shm*(2) library is present.
1889 d_shmat (d_shmat.U):
1890 This variable conditionally defines the HAS_SHMAT symbol, which
1891 indicates to the C program that the shmat() routine is available.
1893 d_shmatprototype (d_shmat.U):
1894 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1895 symbol, which indicates that sys/shm.h has a prototype for
1898 d_shmctl (d_shmctl.U):
1899 This variable conditionally defines the HAS_SHMCTL symbol, which
1900 indicates to the C program that the shmctl() routine is available.
1902 d_shmdt (d_shmdt.U):
1903 This variable conditionally defines the HAS_SHMDT symbol, which
1904 indicates to the C program that the shmdt() routine is available.
1906 d_shmget (d_shmget.U):
1907 This variable conditionally defines the HAS_SHMGET symbol, which
1908 indicates to the C program that the shmget() routine is available.
1910 d_sigaction (d_sigaction.U):
1911 This variable conditionally defines the HAS_SIGACTION symbol, which
1912 indicates that the Vr4 sigaction() routine is available.
1914 d_sigprocmask (d_sigprocmask.U):
1915 This variable conditionally defines HAS_SIGPROCMASK
1916 if sigprocmask() is available to examine or change the signal mask
1917 of the calling process.
1919 d_sigsetjmp (d_sigsetjmp.U):
1920 This variable conditionally defines the HAS_SIGSETJMP symbol,
1921 which indicates that the sigsetjmp() routine is available to
1922 call setjmp() and optionally save the process's signal mask.
1924 d_sitearch (sitearch.U):
1925 This variable conditionally defines SITEARCH to hold the pathname
1926 of architecture-dependent library files for $package. If
1927 $sitearch is the same as $archlib, then this is set to undef.
1929 d_snprintf (d_snprintf.U):
1930 This variable conditionally defines the HAS_SNPRINTF symbol, which
1931 indicates to the C program that the snprintf () library function
1934 d_sockatmark (d_sockatmark.U):
1935 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1936 indicates to the C program that the sockatmark() routine is available.
1938 d_sockatmarkproto (d_sockatmarkproto.U):
1939 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1940 which indicates to the C program that the system provides
1941 a prototype for the sockatmark() function. Otherwise, it is
1942 up to the program to supply one.
1944 d_socket (d_socket.U):
1945 This variable conditionally defines HAS_SOCKET, which indicates
1946 that the BSD socket interface is supported.
1948 d_socklen_t (d_socklen_t.U):
1949 This symbol will be defined if the C compiler supports socklen_t.
1951 d_sockpair (d_socket.U):
1952 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1953 indicates that the BSD socketpair() is supported.
1955 d_socks5_init (d_socks5_init.U):
1956 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1957 indicates to the C program that the socks5_init() routine is available.
1959 d_sprintf_returns_strlen (d_sprintf_len.U):
1960 This variable defines whether sprintf returns the length of the string
1961 (as per the ANSI spec). Some C libraries retain compatibility with
1962 pre-ANSI C and return a pointer to the passed in buffer; for these
1963 this variable will be undef.
1965 d_sqrtl (d_sqrtl.U):
1966 This variable conditionally defines the HAS_SQRTL symbol, which
1967 indicates to the C program that the sqrtl() routine is available.
1969 d_srand48_r (d_srand48_r.U):
1970 This variable conditionally defines the HAS_SRAND48_R symbol,
1971 which indicates to the C program that the srand48_r()
1972 routine is available.
1974 d_srandom_r (d_srandom_r.U):
1975 This variable conditionally defines the HAS_SRANDOM_R symbol,
1976 which indicates to the C program that the srandom_r()
1977 routine is available.
1979 d_sresgproto (d_sresgproto.U):
1980 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1981 which indicates to the C program that the system provides
1982 a prototype for the setresgid() function. Otherwise, it is
1983 up to the program to supply one.
1985 d_sresuproto (d_sresuproto.U):
1986 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1987 which indicates to the C program that the system provides
1988 a prototype for the setresuid() function. Otherwise, it is
1989 up to the program to supply one.
1991 d_statblks (d_statblks.U):
1992 This variable conditionally defines USE_STAT_BLOCKS
1993 if this system has a stat structure declaring
1994 st_blksize and st_blocks.
1996 d_statfs_f_flags (d_statfs_f_flags.U):
1997 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1998 symbol, which indicates to struct statfs from has f_flags member.
1999 This kind of struct statfs is coming from sys/mount.h (BSD),
2000 not from sys/statfs.h (SYSV).
2002 d_statfs_s (d_statfs_s.U):
2003 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2004 which indicates that the struct statfs is supported.
2006 d_statvfs (d_statvfs.U):
2007 This variable conditionally defines the HAS_STATVFS symbol, which
2008 indicates to the C program that the statvfs() routine is available.
2010 d_stdio_cnt_lval (d_stdstdio.U):
2011 This variable conditionally defines STDIO_CNT_LVALUE if the
2012 FILE_cnt macro can be used as an lvalue.
2014 d_stdio_ptr_lval (d_stdstdio.U):
2015 This variable conditionally defines STDIO_PTR_LVALUE if the
2016 FILE_ptr macro can be used as an lvalue.
2018 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2019 This symbol is defined if using the FILE_ptr macro as an lvalue
2020 to increase the pointer by n leaves File_cnt(fp) unchanged.
2022 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2023 This symbol is defined if using the FILE_ptr macro as an lvalue
2024 to increase the pointer by n has the side effect of decreasing the
2025 value of File_cnt(fp) by n.
2027 d_stdio_stream_array (stdio_streams.U):
2028 This variable tells whether there is an array holding
2031 d_stdiobase (d_stdstdio.U):
2032 This variable conditionally defines USE_STDIO_BASE if this system
2033 has a FILE structure declaring a usable _base field (or equivalent)
2036 d_stdstdio (d_stdstdio.U):
2037 This variable conditionally defines USE_STDIO_PTR if this system
2038 has a FILE structure declaring usable _ptr and _cnt fields (or
2039 equivalent) in stdio.h.
2041 d_strchr (d_strchr.U):
2042 This variable conditionally defines HAS_STRCHR if strchr() and
2043 strrchr() are available for string searching.
2045 d_strcoll (d_strcoll.U):
2046 This variable conditionally defines HAS_STRCOLL if strcoll() is
2047 available to compare strings using collating information.
2049 d_strctcpy (d_strctcpy.U):
2050 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2051 indicates to the C program that this C compiler knows how to copy
2054 d_strerrm (d_strerror.U):
2055 This variable holds what Strerrr is defined as to translate an error
2056 code condition into an error message string. It could be 'strerror'
2057 or a more complex macro emulating strrror with sys_errlist[], or the
2058 "unknown" string when both strerror and sys_errlist are missing.
2060 d_strerror (d_strerror.U):
2061 This variable conditionally defines HAS_STRERROR if strerror() is
2062 available to translate error numbers to strings.
2064 d_strerror_r (d_strerror_r.U):
2065 This variable conditionally defines the HAS_STRERROR_R symbol,
2066 which indicates to the C program that the strerror_r()
2067 routine is available.
2069 d_strftime (d_strftime.U):
2070 This variable conditionally defines the HAS_STRFTIME symbol, which
2071 indicates to the C program that the strftime() routine is available.
2073 d_strlcat (d_strlcat.U):
2074 This variable conditionally defines the HAS_STRLCAT symbol, which
2075 indicates to the C program that the strlcat () routine is available.
2077 d_strlcpy (d_strlcpy.U):
2078 This variable conditionally defines the HAS_STRLCPY symbol, which
2079 indicates to the C program that the strlcpy () routine is available.
2081 d_strtod (d_strtod.U):
2082 This variable conditionally defines the HAS_STRTOD symbol, which
2083 indicates to the C program that the strtod() routine is available
2084 to provide better numeric string conversion than atof().
2086 d_strtol (d_strtol.U):
2087 This variable conditionally defines the HAS_STRTOL symbol, which
2088 indicates to the C program that the strtol() routine is available
2089 to provide better numeric string conversion than atoi() and friends.
2091 d_strtold (d_strtold.U):
2092 This variable conditionally defines the HAS_STRTOLD symbol, which
2093 indicates to the C program that the strtold() routine is available.
2095 d_strtoll (d_strtoll.U):
2096 This variable conditionally defines the HAS_STRTOLL symbol, which
2097 indicates to the C program that the strtoll() routine is available.
2099 d_strtoq (d_strtoq.U):
2100 This variable conditionally defines the HAS_STRTOQ symbol, which
2101 indicates to the C program that the strtoq() routine is available.
2103 d_strtoul (d_strtoul.U):
2104 This variable conditionally defines the HAS_STRTOUL symbol, which
2105 indicates to the C program that the strtoul() routine is available
2106 to provide conversion of strings to unsigned long.
2108 d_strtoull (d_strtoull.U):
2109 This variable conditionally defines the HAS_STRTOULL symbol, which
2110 indicates to the C program that the strtoull() routine is available.
2112 d_strtouq (d_strtouq.U):
2113 This variable conditionally defines the HAS_STRTOUQ symbol, which
2114 indicates to the C program that the strtouq() routine is available.
2116 d_strxfrm (d_strxfrm.U):
2117 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2118 available to transform strings.
2120 d_suidsafe (d_dosuid.U):
2121 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2122 if setuid scripts can be secure. This test looks in /dev/fd/.
2124 d_symlink (d_symlink.U):
2125 This variable conditionally defines the HAS_SYMLINK symbol, which
2126 indicates to the C program that the symlink() routine is available
2127 to create symbolic links.
2129 d_syscall (d_syscall.U):
2130 This variable conditionally defines HAS_SYSCALL if syscall() is
2131 available call arbitrary system calls.
2133 d_syscallproto (d_syscallproto.U):
2134 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2135 which indicates to the C program that the system provides
2136 a prototype for the syscall() function. Otherwise, it is
2137 up to the program to supply one.
2139 d_sysconf (d_sysconf.U):
2140 This variable conditionally defines the HAS_SYSCONF symbol, which
2141 indicates to the C program that the sysconf() routine is available
2142 to determine system related limits and options.
2144 d_sysernlst (d_strerror.U):
2145 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2146 is available to translate error numbers to the symbolic name.
2148 d_syserrlst (d_strerror.U):
2149 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2150 available to translate error numbers to strings.
2152 d_system (d_system.U):
2153 This variable conditionally defines HAS_SYSTEM if system() is
2154 available to issue a shell command.
2156 d_tcgetpgrp (d_tcgtpgrp.U):
2157 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2158 indicates to the C program that the tcgetpgrp() routine is available.
2159 to get foreground process group ID.
2161 d_tcsetpgrp (d_tcstpgrp.U):
2162 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2163 indicates to the C program that the tcsetpgrp() routine is available
2164 to set foreground process group ID.
2166 d_telldir (d_readdir.U):
2167 This variable conditionally defines HAS_TELLDIR if telldir() is
2170 d_telldirproto (d_telldirproto.U):
2171 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2172 which indicates to the C program that the system provides
2173 a prototype for the telldir() function. Otherwise, it is
2174 up to the program to supply one.
2177 This variable conditionally defines the HAS_TIME symbol, which indicates
2178 that the time() routine exists. The time() routine is normaly
2179 provided on UNIX systems.
2181 d_times (d_times.U):
2182 This variable conditionally defines the HAS_TIMES symbol, which indicates
2183 that the times() routine exists. The times() routine is normaly
2184 provided on UNIX systems. You may have to include <sys/times.h>.
2186 d_tm_tm_gmtoff (i_time.U):
2187 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2188 indicates to the C program that the struct tm has the tm_gmtoff field.
2190 d_tm_tm_zone (i_time.U):
2191 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2192 indicates to the C program that the struct tm has the tm_zone field.
2194 d_tmpnam_r (d_tmpnam_r.U):
2195 This variable conditionally defines the HAS_TMPNAM_R symbol,
2196 which indicates to the C program that the tmpnam_r()
2197 routine is available.
2199 d_truncate (d_truncate.U):
2200 This variable conditionally defines HAS_TRUNCATE if truncate() is
2201 available to truncate files.
2203 d_ttyname_r (d_ttyname_r.U):
2204 This variable conditionally defines the HAS_TTYNAME_R symbol,
2205 which indicates to the C program that the ttyname_r()
2206 routine is available.
2208 d_tzname (d_tzname.U):
2209 This variable conditionally defines HAS_TZNAME if tzname[] is
2210 available to access timezone names.
2212 d_u32align (d_u32align.U):
2213 This variable tells whether you must access character data
2214 through U32-aligned pointers.
2216 d_ualarm (d_ualarm.U):
2217 This variable conditionally defines the HAS_UALARM symbol, which
2218 indicates to the C program that the ualarm() routine is available.
2220 d_umask (d_umask.U):
2221 This variable conditionally defines the HAS_UMASK symbol, which
2222 indicates to the C program that the umask() routine is available.
2223 to set and get the value of the file creation mask.
2225 d_uname (d_gethname.U):
2226 This variable conditionally defines the HAS_UNAME symbol, which
2227 indicates to the C program that the uname() routine may be
2228 used to derive the host name.
2230 d_union_semun (d_union_semun.U):
2231 This variable conditionally defines HAS_UNION_SEMUN if the
2232 union semun is defined by including <sys/sem.h>.
2234 d_unordered (d_unordered.U):
2235 This variable conditionally defines the HAS_UNORDERED symbol, which
2236 indicates to the C program that the unordered() routine is available.
2238 d_unsetenv (d_unsetenv.U):
2239 This variable conditionally defines the HAS_UNSETENV symbol, which
2240 indicates to the C program that the unsetenv () routine is available.
2242 d_usleep (d_usleep.U):
2243 This variable conditionally defines HAS_USLEEP if usleep() is
2244 available to do high granularity sleeps.
2246 d_usleepproto (d_usleepproto.U):
2247 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2248 which indicates to the C program that the system provides
2249 a prototype for the usleep() function. Otherwise, it is
2250 up to the program to supply one.
2252 d_ustat (d_ustat.U):
2253 This variable conditionally defines HAS_USTAT if ustat() is
2254 available to query file system statistics by dev_t.
2256 d_vendorarch (vendorarch.U):
2257 This variable conditionally defined PERL_VENDORARCH.
2259 d_vendorbin (vendorbin.U):
2260 This variable conditionally defines PERL_VENDORBIN.
2262 d_vendorlib (vendorlib.U):
2263 This variable conditionally defines PERL_VENDORLIB.
2265 d_vendorscript (vendorscript.U):
2266 This variable conditionally defines PERL_VENDORSCRIPT.
2268 d_vfork (d_vfork.U):
2269 This variable conditionally defines the HAS_VFORK symbol, which
2270 indicates the vfork() routine is available.
2272 d_void_closedir (d_closedir.U):
2273 This variable conditionally defines VOID_CLOSEDIR if closedir()
2274 does not return a value.
2276 d_voidsig (d_voidsig.U):
2277 This variable conditionally defines VOIDSIG if this system
2278 declares "void (*signal(...))()" in signal.h. The old way was to
2279 declare it as "int (*signal(...))()".
2281 d_voidtty (i_sysioctl.U):
2282 This variable conditionally defines USE_IOCNOTTY to indicate that the
2283 ioctl() call with TIOCNOTTY should be used to void tty association.
2284 Otherwise (on USG probably), it is enough to close the standard file
2285 decriptors and do a setpgrp().
2287 d_volatile (d_volatile.U):
2288 This variable conditionally defines the HASVOLATILE symbol, which
2289 indicates to the C program that this C compiler knows about the
2290 volatile declaration.
2292 d_vprintf (d_vprintf.U):
2293 This variable conditionally defines the HAS_VPRINTF symbol, which
2294 indicates to the C program that the vprintf() routine is available
2295 to printf with a pointer to an argument list.
2297 d_vsnprintf (d_snprintf.U):
2298 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2299 indicates to the C program that the vsnprintf () library function
2302 d_wait4 (d_wait4.U):
2303 This variable conditionally defines the HAS_WAIT4 symbol, which
2304 indicates the wait4() routine is available.
2306 d_waitpid (d_waitpid.U):
2307 This variable conditionally defines HAS_WAITPID if waitpid() is
2308 available to wait for child process.
2310 d_wcstombs (d_wcstombs.U):
2311 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2312 indicates to the C program that the wcstombs() routine is available
2313 to convert wide character strings to multibyte strings.
2315 d_wctomb (d_wctomb.U):
2316 This variable conditionally defines the HAS_WCTOMB symbol, which
2317 indicates to the C program that the wctomb() routine is available
2318 to convert a wide character to a multibyte.
2320 d_writev (d_writev.U):
2321 This variable conditionally defines the HAS_WRITEV symbol, which
2322 indicates to the C program that the writev() routine is available.
2325 This variable conditionally defines the symbol XENIX, which alerts
2326 the C program that it runs under Xenix.
2329 This variable is used internally by Configure to determine the
2330 full pathname (if any) of the date program. After Configure runs,
2331 the value is reset to a plain "date" and is not useful.
2333 db_hashtype (i_db.U):
2334 This variable contains the type of the hash structure element
2335 in the <db.h> header file. In older versions of DB, it was
2336 int, while in newer ones it is u_int32_t.
2338 db_prefixtype (i_db.U):
2339 This variable contains the type of the prefix structure element
2340 in the <db.h> header file. In older versions of DB, it was
2341 int, while in newer ones it is size_t.
2343 db_version_major (i_db.U):
2344 This variable contains the major version number of
2345 Berkeley DB found in the <db.h> header file.
2347 db_version_minor (i_db.U):
2348 This variable contains the minor version number of
2349 Berkeley DB found in the <db.h> header file.
2350 For DB version 1 this is always 0.
2352 db_version_patch (i_db.U):
2353 This variable contains the patch version number of
2354 Berkeley DB found in the <db.h> header file.
2355 For DB version 1 this is always 0.
2357 defvoidused (voidflags.U):
2358 This variable contains the default value of the VOIDUSED symbol (15).
2360 direntrytype (i_dirent.U):
2361 This symbol is set to 'struct direct' or 'struct dirent' depending on
2362 whether dirent is available or not. You should use this pseudo type to
2363 portably declare your directory entries.
2366 This variable contains the extension that is to be used for the
2367 dynamically loaded modules that perl generaties.
2370 This variable contains the name of the dynamic loading file that
2371 will be used with the package.
2373 doublesize (doublesize.U):
2374 This variable contains the value of the DOUBLESIZE symbol, which
2375 indicates to the C program how many bytes there are in a double.
2377 drand01 (randfunc.U):
2378 Indicates the macro to be used to generate normalized
2379 random numbers. Uses randfunc, often divided by
2380 (double) (((unsigned long) 1 << randbits)) in order to
2381 normalize the result.
2382 In C programs, the macro 'Drand01' is mapped to drand01.
2384 drand48_r_proto (d_drand48_r.U):
2385 This variable encodes the prototype of drand48_r.
2386 It is zero if d_drand48_r is undef, and one of the
2387 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2390 dynamic_ext (Extensions.U):
2391 This variable holds a list of XS extension files we want to
2392 link dynamically into the package. It is used by Makefile.
2394 eagain (nblock_io.U):
2395 This variable bears the symbolic errno code set by read() when no
2396 data is present on the file and non-blocking I/O was enabled (otherwise,
2397 read() blocks naturally).
2400 This variable conditionally defines EBCDIC if this
2401 system uses EBCDIC encoding. Among other things, this
2402 means that the character ranges are not contiguous.
2406 This variable is used internally by Configure to determine the
2407 full pathname (if any) of the echo program. After Configure runs,
2408 the value is reset to a plain "echo" and is not useful.
2411 This variable is used internally by Configure to determine the
2412 full pathname (if any) of the egrep program. After Configure runs,
2413 the value is reset to a plain "egrep" and is not useful.
2416 This variable is defined but not used by Configure.
2417 The value is a plain '' and is not useful.
2419 endgrent_r_proto (d_endgrent_r.U):
2420 This variable encodes the prototype of endgrent_r.
2421 It is zero if d_endgrent_r is undef, and one of the
2422 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2425 endhostent_r_proto (d_endhostent_r.U):
2426 This variable encodes the prototype of endhostent_r.
2427 It is zero if d_endhostent_r is undef, and one of the
2428 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2431 endnetent_r_proto (d_endnetent_r.U):
2432 This variable encodes the prototype of endnetent_r.
2433 It is zero if d_endnetent_r is undef, and one of the
2434 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2437 endprotoent_r_proto (d_endprotoent_r.U):
2438 This variable encodes the prototype of endprotoent_r.
2439 It is zero if d_endprotoent_r is undef, and one of the
2440 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2443 endpwent_r_proto (d_endpwent_r.U):
2444 This variable encodes the prototype of endpwent_r.
2445 It is zero if d_endpwent_r is undef, and one of the
2446 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2449 endservent_r_proto (d_endservent_r.U):
2450 This variable encodes the prototype of endservent_r.
2451 It is zero if d_endservent_r is undef, and one of the
2452 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2456 When running under Eunice this variable contains a command which will
2457 convert a shell script to the proper form of text file for it to be
2458 executable by the shell. On other systems it is a no-op.
2461 This is an old synonym for _exe.
2464 This variable is used internally by Configure to determine the
2465 full pathname (if any) of the expr program. After Configure runs,
2466 the value is reset to a plain "expr" and is not useful.
2468 extensions (Extensions.U):
2469 This variable holds a list of all extension files (both XS and
2470 non-xs linked into the package. It is propagated to Config.pm
2471 and is typically used to test whether a particular extesion
2475 This variable holds a list of extra modules to install.
2477 fflushall (fflushall.U):
2478 This symbol, if defined, tells that to flush
2479 all pending stdio output one must loop through all
2480 the stdio file handles stored in an array and fflush them.
2481 Note that if fflushNULL is defined, fflushall will not
2482 even be probed for and will be left undefined.
2484 fflushNULL (fflushall.U):
2485 This symbol, if defined, tells that fflush(NULL) does flush
2486 all pending stdio output.
2489 This variable is defined but not used by Configure.
2490 The value is a plain '' and is not useful.
2492 firstmakefile (Unix.U):
2493 This variable defines the first file searched by make. On unix,
2494 it is makefile (then Makefile). On case-insensitive systems,
2495 it might be something else. This is only used to deal with
2496 convoluted make depend tricks.
2499 This variable is defined but not used by Configure.
2500 The value is a plain '' and is not useful.
2502 fpossize (fpossize.U):
2503 This variable contains the size of a fpostype in bytes.
2505 fpostype (fpostype.U):
2506 This variable defines Fpos_t to be something like fpos_t, long,
2507 uint, or whatever type is used to declare file positions in libc.
2509 freetype (mallocsrc.U):
2510 This variable contains the return type of free(). It is usually
2511 void, but occasionally int.
2514 This variable contains the command used by Configure
2515 to copy files from the target host. Useful and available
2516 only during Perl build.
2517 The string ':' if not cross-compiling.
2520 This variable contains the full pathname to 'ar', whether or
2521 not the user has specified 'portability'. This is only used
2525 This variable contains the full pathname to 'csh', whether or
2526 not the user has specified 'portability'. This is only used
2527 in the compiled C program, and we assume that all systems which
2528 can share this executable will have the same full pathname to
2531 full_sed (Loc_sed.U):
2532 This variable contains the full pathname to 'sed', whether or
2533 not the user has specified 'portability'. This is only used
2534 in the compiled C program, and we assume that all systems which
2535 can share this executable will have the same full pathname to
2538 gccansipedantic (gccvers.U):
2539 If GNU cc (gcc) is used, this variable will enable (if set) the
2540 -ansi and -pedantic ccflags for building core files (through
2541 cflags script). (See Porting/pumpkin.pod for full description).
2543 gccosandvers (gccvers.U):
2544 If GNU cc (gcc) is used, this variable holds the operating system
2545 and version used to compile gcc. It is set to '' if not gcc,
2546 or if nothing useful can be parsed as the os version.
2548 gccversion (gccvers.U):
2549 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2550 indicate whether the compiler is version 1 or 2. This is used in
2551 setting some of the default cflags. It is set to '' if not gcc.
2553 getgrent_r_proto (d_getgrent_r.U):
2554 This variable encodes the prototype of getgrent_r.
2555 It is zero if d_getgrent_r is undef, and one of the
2556 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2559 getgrgid_r_proto (d_getgrgid_r.U):
2560 This variable encodes the prototype of getgrgid_r.
2561 It is zero if d_getgrgid_r is undef, and one of the
2562 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2565 getgrnam_r_proto (d_getgrnam_r.U):
2566 This variable encodes the prototype of getgrnam_r.
2567 It is zero if d_getgrnam_r is undef, and one of the
2568 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2571 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2572 This variable encodes the prototype of gethostbyaddr_r.
2573 It is zero if d_gethostbyaddr_r is undef, and one of the
2574 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2577 gethostbyname_r_proto (d_gethostbyname_r.U):
2578 This variable encodes the prototype of gethostbyname_r.
2579 It is zero if d_gethostbyname_r is undef, and one of the
2580 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2583 gethostent_r_proto (d_gethostent_r.U):
2584 This variable encodes the prototype of gethostent_r.
2585 It is zero if d_gethostent_r is undef, and one of the
2586 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2589 getlogin_r_proto (d_getlogin_r.U):
2590 This variable encodes the prototype of getlogin_r.
2591 It is zero if d_getlogin_r is undef, and one of the
2592 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2595 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2596 This variable encodes the prototype of getnetbyaddr_r.
2597 It is zero if d_getnetbyaddr_r is undef, and one of the
2598 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2601 getnetbyname_r_proto (d_getnetbyname_r.U):
2602 This variable encodes the prototype of getnetbyname_r.
2603 It is zero if d_getnetbyname_r is undef, and one of the
2604 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2607 getnetent_r_proto (d_getnetent_r.U):
2608 This variable encodes the prototype of getnetent_r.
2609 It is zero if d_getnetent_r is undef, and one of the
2610 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2613 getprotobyname_r_proto (d_getprotobyname_r.U):
2614 This variable encodes the prototype of getprotobyname_r.
2615 It is zero if d_getprotobyname_r is undef, and one of the
2616 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2619 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2620 This variable encodes the prototype of getprotobynumber_r.
2621 It is zero if d_getprotobynumber_r is undef, and one of the
2622 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2625 getprotoent_r_proto (d_getprotoent_r.U):
2626 This variable encodes the prototype of getprotoent_r.
2627 It is zero if d_getprotoent_r is undef, and one of the
2628 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2631 getpwent_r_proto (d_getpwent_r.U):
2632 This variable encodes the prototype of getpwent_r.
2633 It is zero if d_getpwent_r is undef, and one of the
2634 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2637 getpwnam_r_proto (d_getpwnam_r.U):
2638 This variable encodes the prototype of getpwnam_r.
2639 It is zero if d_getpwnam_r is undef, and one of the
2640 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2643 getpwuid_r_proto (d_getpwuid_r.U):
2644 This variable encodes the prototype of getpwuid_r.
2645 It is zero if d_getpwuid_r is undef, and one of the
2646 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2649 getservbyname_r_proto (d_getservbyname_r.U):
2650 This variable encodes the prototype of getservbyname_r.
2651 It is zero if d_getservbyname_r is undef, and one of the
2652 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2655 getservbyport_r_proto (d_getservbyport_r.U):
2656 This variable encodes the prototype of getservbyport_r.
2657 It is zero if d_getservbyport_r is undef, and one of the
2658 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2661 getservent_r_proto (d_getservent_r.U):
2662 This variable encodes the prototype of getservent_r.
2663 It is zero if d_getservent_r is undef, and one of the
2664 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2667 getspnam_r_proto (d_getspnam_r.U):
2668 This variable encodes the prototype of getspnam_r.
2669 It is zero if d_getspnam_r is undef, and one of the
2670 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2674 This variable contains the format string used for printing a Gid_t.
2676 gidsign (gidsign.U):
2677 This variable contains the signedness of a gidtype.
2678 1 for unsigned, -1 for signed.
2680 gidsize (gidsize.U):
2681 This variable contains the size of a gidtype in bytes.
2683 gidtype (gidtype.U):
2684 This variable defines Gid_t to be something like gid_t, int,
2685 ushort, or whatever type is used to declare the return type
2686 of getgid(). Typically, it is the type of group ids in the kernel.
2689 This variable holds the general path (space-separated) used to
2690 find libraries. It may contain directories that do not exist on
2691 this platform, libpth is the cleaned-up version.
2694 This variable is used internally by Configure to determine the
2695 full pathname (if any) of the gmake program. After Configure runs,
2696 the value is reset to a plain "gmake" and is not useful.
2698 gmtime_r_proto (d_gmtime_r.U):
2699 This variable encodes the prototype of gmtime_r.
2700 It is zero if d_gmtime_r is undef, and one of the
2701 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2704 gnulibc_version (d_gnulibc.U):
2705 This variable contains the version number of the GNU C library.
2706 It is usually something like '2.2.5'. It is a plain '' if this
2707 is not the GNU C library, or if the version is unknown.
2710 This variable is used internally by Configure to determine the
2711 full pathname (if any) of the grep program. After Configure runs,
2712 the value is reset to a plain "grep" and is not useful.
2715 This variable contains a command that produces the text of the
2716 /etc/group file. This is normally "cat /etc/group", but can be
2717 "ypcat group" when NIS is used.
2718 On some systems, such as os390, there may be no equivalent
2719 command, in which case this variable is unset.
2721 groupstype (groupstype.U):
2722 This variable defines Groups_t to be something like gid_t, int,
2723 ushort, or whatever type is used for the second argument to
2724 getgroups() and setgroups(). Usually, this is the same as
2725 gidtype (gid_t), but sometimes it isn't.
2728 This variable is used internally by Configure to determine the
2729 full pathname (if any) of the gzip program. After Configure runs,
2730 the value is reset to a plain "gzip" and is not useful.
2732 h_fcntl (h_fcntl.U):
2733 This is variable gets set in various places to tell i_fcntl that
2734 <fcntl.h> should be included.
2736 h_sysfile (h_sysfile.U):
2737 This is variable gets set in various places to tell i_sys_file that
2738 <sys/file.h> should be included.
2741 Gives the type of hints used for previous answers. May be one of
2742 "default", "recommended" or "previous".
2745 This variable contains a command that produces the text of the
2746 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2747 "ypcat hosts" when NIS is used.
2748 On some systems, such as os390, there may be no equivalent
2749 command, in which case this variable is unset.
2751 html1dir (html1dir.U):
2752 This variable contains the name of the directory in which html
2753 source pages are to be put. This directory is for pages
2754 that describe whole programs, not libraries or modules. It
2755 is intended to correspond roughly to section 1 of the Unix
2758 html1direxp (html1dir.U):
2759 This variable is the same as the html1dir variable, but is filename
2760 expanded at configuration time, for convenient use in makefiles.
2762 html3dir (html3dir.U):
2763 This variable contains the name of the directory in which html
2764 source pages are to be put. This directory is for pages
2765 that describe libraries or modules. It is intended to
2766 correspond roughly to section 3 of the Unix manuals.
2768 html3direxp (html3dir.U):
2769 This variable is the same as the html3dir variable, but is filename
2770 expanded at configuration time, for convenient use in makefiles.
2773 This variable is the size of an I16 in bytes.
2776 This variable contains the C type used for Perl's I16.
2779 This variable is the size of an I32 in bytes.
2782 This variable contains the C type used for Perl's I32.
2785 This variable is the size of an I64 in bytes.
2788 This variable contains the C type used for Perl's I64.
2791 This variable is the size of an I8 in bytes.
2794 This variable contains the C type used for Perl's I8.
2796 i_arpainet (i_arpainet.U):
2797 This variable conditionally defines the I_ARPA_INET symbol,
2798 and indicates whether a C program should include <arpa/inet.h>.
2800 i_bsdioctl (i_sysioctl.U):
2801 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2802 indicates to the C program that <sys/bsdioctl.h> exists and should
2805 i_crypt (i_crypt.U):
2806 This variable conditionally defines the I_CRYPT symbol, and indicates
2807 whether a C program should include <crypt.h>.
2810 This variable conditionally defines the I_DB symbol, and indicates
2811 whether a C program may include Berkeley's DB include file <db.h>.
2814 This variable conditionally defines the I_DBM symbol, which
2815 indicates to the C program that <dbm.h> exists and should
2818 i_dirent (i_dirent.U):
2819 This variable conditionally defines I_DIRENT, which indicates
2820 to the C program that it should include <dirent.h>.
2823 This variable conditionally defines the I_DLD symbol, which
2824 indicates to the C program that <dld.h> (GNU dynamic loading)
2825 exists and should be included.
2827 i_dlfcn (i_dlfcn.U):
2828 This variable conditionally defines the I_DLFCN symbol, which
2829 indicates to the C program that <dlfcn.h> exists and should
2832 i_fcntl (i_fcntl.U):
2833 This variable controls the value of I_FCNTL (which tells
2834 the C program to include <fcntl.h>).
2836 i_float (i_float.U):
2837 This variable conditionally defines the I_FLOAT symbol, and indicates
2838 whether a C program may include <float.h> to get symbols like DBL_MAX
2839 or DBL_MIN, i.e. machine dependent floating point values.
2842 This variable conditionally defines the I_FP symbol, and indicates
2843 whether a C program should include <fp.h>.
2845 i_fp_class (i_fp_class.U):
2846 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2847 whether a C program should include <fp_class.h>.
2850 This variable conditionally defines the I_GDBM symbol, which
2851 indicates to the C program that <gdbm.h> exists and should
2855 This variable conditionally defines the I_GRP symbol, and indicates
2856 whether a C program should include <grp.h>.
2858 i_ieeefp (i_ieeefp.U):
2859 This variable conditionally defines the I_IEEEFP symbol, and indicates
2860 whether a C program should include <ieeefp.h>.
2862 i_inttypes (i_inttypes.U):
2863 This variable conditionally defines the I_INTTYPES symbol,
2864 and indicates whether a C program should include <inttypes.h>.
2866 i_langinfo (i_langinfo.U):
2867 This variable conditionally defines the I_LANGINFO symbol,
2868 and indicates whether a C program should include <langinfo.h>.
2870 i_libutil (i_libutil.U):
2871 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2872 whether a C program should include <libutil.h>.
2874 i_limits (i_limits.U):
2875 This variable conditionally defines the I_LIMITS symbol, and indicates
2876 whether a C program may include <limits.h> to get symbols like WORD_BIT
2879 i_locale (i_locale.U):
2880 This variable conditionally defines the I_LOCALE symbol,
2881 and indicates whether a C program should include <locale.h>.
2883 i_machcthr (i_machcthr.U):
2884 This variable conditionally defines the I_MACH_CTHREADS symbol,
2885 and indicates whether a C program should include <mach/cthreads.h>.
2887 i_malloc (i_malloc.U):
2888 This variable conditionally defines the I_MALLOC symbol, and indicates
2889 whether a C program should include <malloc.h>.
2892 This variable conditionally defines the I_MATH symbol, and indicates
2893 whether a C program may include <math.h>.
2895 i_memory (i_memory.U):
2896 This variable conditionally defines the I_MEMORY symbol, and indicates
2897 whether a C program should include <memory.h>.
2899 i_mntent (i_mntent.U):
2900 This variable conditionally defines the I_MNTENT symbol, and indicates
2901 whether a C program should include <mntent.h>.
2904 This variable conditionally defines the I_NDBM symbol, which
2905 indicates to the C program that <ndbm.h> exists and should
2908 i_netdb (i_netdb.U):
2909 This variable conditionally defines the I_NETDB symbol, and indicates
2910 whether a C program should include <netdb.h>.
2912 i_neterrno (i_neterrno.U):
2913 This variable conditionally defines the I_NET_ERRNO symbol, which
2914 indicates to the C program that <net/errno.h> exists and should
2917 i_netinettcp (i_netinettcp.U):
2918 This variable conditionally defines the I_NETINET_TCP symbol,
2919 and indicates whether a C program should include <netinet/tcp.h>.
2922 This variable conditionally defines I_NETINET_IN, which indicates
2923 to the C program that it should include <netinet/in.h>. Otherwise,
2924 you may try <sys/in.h>.
2927 This variable conditionally defines the I_POLL symbol, and indicates
2928 whether a C program should include <poll.h>.
2931 This variable conditionally defines the I_PROT symbol, and indicates
2932 whether a C program should include <prot.h>.
2934 i_pthread (i_pthread.U):
2935 This variable conditionally defines the I_PTHREAD symbol,
2936 and indicates whether a C program should include <pthread.h>.
2939 This variable conditionally defines I_PWD, which indicates
2940 to the C program that it should include <pwd.h>.
2942 i_rpcsvcdbm (i_dbm.U):
2943 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2944 indicates to the C program that <rpcsvc/dbm.h> exists and should
2945 be included. Some System V systems might need this instead of <dbm.h>.
2948 This variable conditionally defines the I_SFIO symbol,
2949 and indicates whether a C program should include <sfio.h>.
2951 i_sgtty (i_termio.U):
2952 This variable conditionally defines the I_SGTTY symbol, which
2953 indicates to the C program that it should include <sgtty.h> rather
2956 i_shadow (i_shadow.U):
2957 This variable conditionally defines the I_SHADOW symbol, and indicates
2958 whether a C program should include <shadow.h>.
2960 i_socks (i_socks.U):
2961 This variable conditionally defines the I_SOCKS symbol, and indicates
2962 whether a C program should include <socks.h>.
2964 i_stdarg (i_varhdr.U):
2965 This variable conditionally defines the I_STDARG symbol, which
2966 indicates to the C program that <stdarg.h> exists and should
2969 i_stddef (i_stddef.U):
2970 This variable conditionally defines the I_STDDEF symbol, which
2971 indicates to the C program that <stddef.h> exists and should
2974 i_stdlib (i_stdlib.U):
2975 This variable conditionally defines the I_STDLIB symbol, which
2976 indicates to the C program that <stdlib.h> exists and should
2979 i_string (i_string.U):
2980 This variable conditionally defines the I_STRING symbol, which
2981 indicates that <string.h> should be included rather than <strings.h>.
2983 i_sunmath (i_sunmath.U):
2984 This variable conditionally defines the I_SUNMATH symbol, and indicates
2985 whether a C program should include <sunmath.h>.
2987 i_sysaccess (i_sysaccess.U):
2988 This variable conditionally defines the I_SYS_ACCESS symbol,
2989 and indicates whether a C program should include <sys/access.h>.
2991 i_sysdir (i_sysdir.U):
2992 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2993 whether a C program should include <sys/dir.h>.
2995 i_sysfile (i_sysfile.U):
2996 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2997 whether a C program should include <sys/file.h> to get R_OK and friends.
2999 i_sysfilio (i_sysioctl.U):
3000 This variable conditionally defines the I_SYS_FILIO symbol, which
3001 indicates to the C program that <sys/filio.h> exists and should
3002 be included in preference to <sys/ioctl.h>.
3005 This variable conditionally defines I_SYS_IN, which indicates
3006 to the C program that it should include <sys/in.h> instead of
3009 i_sysioctl (i_sysioctl.U):
3010 This variable conditionally defines the I_SYS_IOCTL symbol, which
3011 indicates to the C program that <sys/ioctl.h> exists and should
3014 i_syslog (i_syslog.U):
3015 This variable conditionally defines the I_SYSLOG symbol,
3016 and indicates whether a C program should include <syslog.h>.
3018 i_sysmman (i_sysmman.U):
3019 This variable conditionally defines the I_SYS_MMAN symbol, and
3020 indicates whether a C program should include <sys/mman.h>.
3022 i_sysmode (i_sysmode.U):
3023 This variable conditionally defines the I_SYSMODE symbol,
3024 and indicates whether a C program should include <sys/mode.h>.
3026 i_sysmount (i_sysmount.U):
3027 This variable conditionally defines the I_SYSMOUNT symbol,
3028 and indicates whether a C program should include <sys/mount.h>.
3030 i_sysndir (i_sysndir.U):
3031 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3032 whether a C program should include <sys/ndir.h>.
3034 i_sysparam (i_sysparam.U):
3035 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3036 whether a C program should include <sys/param.h>.
3038 i_sysresrc (i_sysresrc.U):
3039 This variable conditionally defines the I_SYS_RESOURCE symbol,
3040 and indicates whether a C program should include <sys/resource.h>.
3042 i_syssecrt (i_syssecrt.U):
3043 This variable conditionally defines the I_SYS_SECURITY symbol,
3044 and indicates whether a C program should include <sys/security.h>.
3046 i_sysselct (i_sysselct.U):
3047 This variable conditionally defines I_SYS_SELECT, which indicates
3048 to the C program that it should include <sys/select.h> in order to
3049 get the definition of struct timeval.
3051 i_syssockio (i_sysioctl.U):
3052 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3053 C program that socket ioctl codes may be found in <sys/sockio.h>
3054 instead of <sys/ioctl.h>.
3056 i_sysstat (i_sysstat.U):
3057 This variable conditionally defines the I_SYS_STAT symbol,
3058 and indicates whether a C program should include <sys/stat.h>.
3060 i_sysstatfs (i_sysstatfs.U):
3061 This variable conditionally defines the I_SYSSTATFS symbol,
3062 and indicates whether a C program should include <sys/statfs.h>.
3064 i_sysstatvfs (i_sysstatvfs.U):
3065 This variable conditionally defines the I_SYSSTATVFS symbol,
3066 and indicates whether a C program should include <sys/statvfs.h>.
3068 i_systime (i_time.U):
3069 This variable conditionally defines I_SYS_TIME, which indicates
3070 to the C program that it should include <sys/time.h>.
3072 i_systimek (i_time.U):
3073 This variable conditionally defines I_SYS_TIME_KERNEL, which
3074 indicates to the C program that it should include <sys/time.h>
3075 with KERNEL defined.
3077 i_systimes (i_systimes.U):
3078 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3079 whether a C program should include <sys/times.h>.
3081 i_systypes (i_systypes.U):
3082 This variable conditionally defines the I_SYS_TYPES symbol,
3083 and indicates whether a C program should include <sys/types.h>.
3085 i_sysuio (i_sysuio.U):
3086 This variable conditionally defines the I_SYSUIO symbol, and indicates
3087 whether a C program should include <sys/uio.h>.
3089 i_sysun (i_sysun.U):
3090 This variable conditionally defines I_SYS_UN, which indicates
3091 to the C program that it should include <sys/un.h> to get UNIX
3092 domain socket definitions.
3094 i_sysutsname (i_sysutsname.U):
3095 This variable conditionally defines the I_SYSUTSNAME symbol,
3096 and indicates whether a C program should include <sys/utsname.h>.
3098 i_sysvfs (i_sysvfs.U):
3099 This variable conditionally defines the I_SYSVFS symbol,
3100 and indicates whether a C program should include <sys/vfs.h>.
3102 i_syswait (i_syswait.U):
3103 This variable conditionally defines I_SYS_WAIT, which indicates
3104 to the C program that it should include <sys/wait.h>.
3106 i_termio (i_termio.U):
3107 This variable conditionally defines the I_TERMIO symbol, which
3108 indicates to the C program that it should include <termio.h> rather
3111 i_termios (i_termio.U):
3112 This variable conditionally defines the I_TERMIOS symbol, which
3113 indicates to the C program that the POSIX <termios.h> file is
3117 This variable conditionally defines I_TIME, which indicates
3118 to the C program that it should include <time.h>.
3120 i_unistd (i_unistd.U):
3121 This variable conditionally defines the I_UNISTD symbol, and indicates
3122 whether a C program should include <unistd.h>.
3124 i_ustat (i_ustat.U):
3125 This variable conditionally defines the I_USTAT symbol, and indicates
3126 whether a C program should include <ustat.h>.
3128 i_utime (i_utime.U):
3129 This variable conditionally defines the I_UTIME symbol, and indicates
3130 whether a C program should include <utime.h>.
3132 i_values (i_values.U):
3133 This variable conditionally defines the I_VALUES symbol, and indicates
3134 whether a C program may include <values.h> to get symbols like MAXLONG
3137 i_varargs (i_varhdr.U):
3138 This variable conditionally defines I_VARARGS, which indicates
3139 to the C program that it should include <varargs.h>.
3141 i_varhdr (i_varhdr.U):
3142 Contains the name of the header to be included to get va_dcl definition.
3143 Typically one of varargs.h or stdarg.h.
3145 i_vfork (i_vfork.U):
3146 This variable conditionally defines the I_VFORK symbol, and indicates
3147 whether a C program should include vfork.h.
3149 ignore_versioned_solibs (libs.U):
3150 This variable should be non-empty if non-versioned shared
3151 libraries (libfoo.so.x.y) are to be ignored (because they
3152 cannot be linked against).
3154 inc_version_list (inc_version_list.U):
3155 This variable specifies the list of subdirectories in over
3156 which perl.c:incpush() and lib/lib.pm will automatically
3157 search when adding directories to @INC. The elements in
3158 the list are separated by spaces. This is only useful
3159 if you have a perl library directory tree structured like the
3160 default one. See INSTALL for how this works. The versioned
3161 site_perl directory was introduced in 5.005, so that is the
3162 lowest possible value.
3164 This list includes architecture-dependent directories back to
3165 version $api_versionstring (e.g. 5.5.640) and
3166 architecture-independent directories all the way back to
3169 inc_version_list_init (inc_version_list.U):
3170 This variable holds the same list as inc_version_list, but
3171 each item is enclosed in double quotes and separated by commas,
3172 suitable for use in the PERL_INC_VERSION_LIST initialization.
3175 This variable must preceed the normal include path to get hte
3176 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3177 Value can be "" or "/bsd43" on mips.
3180 This variable is defined but not used by Configure.
3181 The value is a plain '' and is not useful.
3183 initialinstalllocation (bin.U):
3184 When userelocatableinc is true, this variable holds the location
3185 that make install should copy the perl binary to, with all the
3186 run-time relocatable paths calculated from this at install time.
3187 When used, it is initialised to the original value of binexp, and
3188 then binexp is set to '.../', as the other binaries are found
3189 relative to the perl binary.
3191 installarchlib (archlib.U):
3192 This variable is really the same as archlibexp but may differ on
3193 those systems using AFS. For extra portability, only this variable
3194 should be used in makefiles.
3197 This variable is the same as binexp unless AFS is running in which case
3198 the user is explicitely prompted for it. This variable should always
3199 be used in your makefiles for maximum portability.
3201 installhtml1dir (html1dir.U):
3202 This variable is really the same as html1direxp, unless you are
3203 using a different installprefix. For extra portability, you
3204 should only use this variable within your makefiles.
3206 installhtml3dir (html3dir.U):
3207 This variable is really the same as html3direxp, unless you are
3208 using a different installprefix. For extra portability, you
3209 should only use this variable within your makefiles.
3211 installman1dir (man1dir.U):
3212 This variable is really the same as man1direxp, unless you are using
3213 AFS in which case it points to the read/write location whereas
3214 man1direxp only points to the read-only access location. For extra
3215 portability, you should only use this variable within your makefiles.
3217 installman3dir (man3dir.U):
3218 This variable is really the same as man3direxp, unless you are using
3219 AFS in which case it points to the read/write location whereas
3220 man3direxp only points to the read-only access location. For extra
3221 portability, you should only use this variable within your makefiles.
3223 installprefix (installprefix.U):
3224 This variable holds the name of the directory below which
3225 "make install" will install the package. For most users, this
3226 is the same as prefix. However, it is useful for
3227 installing the software into a different (usually temporary)
3228 location after which it can be bundled up and moved somehow
3229 to the final location specified by prefix.
3231 installprefixexp (installprefix.U):
3232 This variable holds the full absolute path of installprefix
3233 with all ~-expansion done.
3235 installprivlib (privlib.U):
3236 This variable is really the same as privlibexp but may differ on
3237 those systems using AFS. For extra portability, only this variable
3238 should be used in makefiles.
3240 installscript (scriptdir.U):
3241 This variable is usually the same as scriptdirexp, unless you are on
3242 a system running AFS, in which case they may differ slightly. You
3243 should always use this variable within your makefiles for portability.
3245 installsitearch (sitearch.U):
3246 This variable is really the same as sitearchexp but may differ on
3247 those systems using AFS. For extra portability, only this variable
3248 should be used in makefiles.
3250 installsitebin (sitebin.U):
3251 This variable is usually the same as sitebinexp, unless you are on
3252 a system running AFS, in which case they may differ slightly. You
3253 should always use this variable within your makefiles for portability.
3255 installsitehtml1dir (sitehtml1dir.U):
3256 This variable is really the same as sitehtml1direxp, unless you are using
3257 AFS in which case it points to the read/write location whereas
3258 html1direxp only points to the read-only access location. For extra
3259 portability, you should only use this variable within your makefiles.
3261 installsitehtml3dir (sitehtml3dir.U):
3262 This variable is really the same as sitehtml3direxp, unless you are using
3263 AFS in which case it points to the read/write location whereas
3264 html3direxp only points to the read-only access location. For extra
3265 portability, you should only use this variable within your makefiles.
3267 installsitelib (sitelib.U):
3268 This variable is really the same as sitelibexp but may differ on
3269 those systems using AFS. For extra portability, only this variable
3270 should be used in makefiles.
3272 installsiteman1dir (siteman1dir.U):
3273 This variable is really the same as siteman1direxp, unless you are using
3274 AFS in which case it points to the read/write location whereas
3275 man1direxp only points to the read-only access location. For extra
3276 portability, you should only use this variable within your makefiles.
3278 installsiteman3dir (siteman3dir.U):
3279 This variable is really the same as siteman3direxp, unless you are using
3280 AFS in which case it points to the read/write location whereas
3281 man3direxp only points to the read-only access location. For extra
3282 portability, you should only use this variable within your makefiles.
3284 installsitescript (sitescript.U):
3285 This variable is usually the same as sitescriptexp, unless you are on
3286 a system running AFS, in which case they may differ slightly. You
3287 should always use this variable within your makefiles for portability.
3289 installstyle (installstyle.U):
3290 This variable describes the "style" of the perl installation.
3291 This is intended to be useful for tools that need to
3292 manipulate entire perl distributions. Perl itself doesn't use
3293 this to find its libraries -- the library directories are
3294 stored directly in Config.pm. Currently, there are only two
3295 styles: "lib" and "lib/perl5". The default library locations
3296 (e.g. privlib, sitelib) are either $prefix/lib or
3297 $prefix/lib/perl5. The former is useful if $prefix is a
3298 directory dedicated to perl (e.g. /opt/perl), while the latter
3299 is useful if $prefix is shared by many packages, e.g. if
3302 Unfortunately, while this "style" variable is used to set
3303 defaults for all three directory hierarchies (core, vendor, and
3304 site), there is no guarantee that the same style is actually
3305 appropriate for all those directories. For example, $prefix
3306 might be /opt/perl, but $siteprefix might be /usr/local.
3307 (Perhaps, in retrospect, the "lib" style should never have been
3308 supported, but it did seem like a nice idea at the time.)
3310 The situation is even less clear for tools such as MakeMaker
3311 that can be used to install additional modules into
3312 non-standard places. For example, if a user intends to install
3313 a module into a private directory (perhaps by setting PREFIX on
3314 the Makefile.PL command line), then there is no reason to
3315 assume that the Configure-time $installstyle setting will be
3316 relevant for that PREFIX.
3318 This may later be extended to include other information, so
3319 be careful with pattern-matching on the results.
3321 For compatibility with perl5.005 and earlier, the default
3322 setting is based on whether or not $prefix contains the string
3325 installusrbinperl (instubperl.U):
3326 This variable tells whether Perl should be installed also as
3327 /usr/bin/perl in addition to
3330 installvendorarch (vendorarch.U):
3331 This variable is really the same as vendorarchexp but may differ on
3332 those systems using AFS. For extra portability, only this variable
3333 should be used in makefiles.
3335 installvendorbin (vendorbin.U):
3336 This variable is really the same as vendorbinexp but may differ on
3337 those systems using AFS. For extra portability, only this variable
3338 should be used in makefiles.
3340 installvendorhtml1dir (vendorhtml1dir.U):
3341 This variable is really the same as vendorhtml1direxp but may differ on
3342 those systems using AFS. For extra portability, only this variable
3343 should be used in makefiles.
3345 installvendorhtml3dir (vendorhtml3dir.U):
3346 This variable is really the same as vendorhtml3direxp but may differ on
3347 those systems using AFS. For extra portability, only this variable
3348 should be used in makefiles.
3350 installvendorlib (vendorlib.U):
3351 This variable is really the same as vendorlibexp but may differ on
3352 those systems using AFS. For extra portability, only this variable
3353 should be used in makefiles.
3355 installvendorman1dir (vendorman1dir.U):
3356 This variable is really the same as vendorman1direxp but may differ on
3357 those systems using AFS. For extra portability, only this variable
3358 should be used in makefiles.
3360 installvendorman3dir (vendorman3dir.U):
3361 This variable is really the same as vendorman3direxp but may differ on
3362 those systems using AFS. For extra portability, only this variable
3363 should be used in makefiles.
3365 installvendorscript (vendorscript.U):
3366 This variable is really the same as vendorscriptexp but may differ on
3367 those systems using AFS. For extra portability, only this variable
3368 should be used in makefiles.
3370 intsize (intsize.U):
3371 This variable contains the value of the INTSIZE symbol, which
3372 indicates to the C program how many bytes there are in an int.
3374 issymlink (issymlink.U):
3375 This variable holds the test command to test for a symbolic link
3376 (if they are supported). Typical values include 'test -h' and
3379 ivdformat (perlxvf.U):
3380 This variable contains the format string used for printing
3381 a Perl IV as a signed decimal integer.
3384 This variable is the size of an IV in bytes.
3387 This variable contains the C type used for Perl's IV.
3389 known_extensions (Extensions.U):
3390 This variable holds a list of all XS extensions included in
3394 This variable is defined but not used by Configure.
3395 The value is a plain '' and is not useful.
3398 This variable indicates the program to be used to link
3399 libraries for dynamic loading. On some systems, it is 'ld'.
3400 On ELF systems, it should be $cc. Mostly, we'll try to respect
3401 the hint file setting.
3403 lddlflags (dlsrc.U):
3404 This variable contains any special flags that might need to be
3405 passed to $ld to create a shared library suitable for dynamic
3406 loading. It is up to the makefile to use it. For hpux, it
3407 should be '-b'. For sunos 4.1, it is empty.
3409 ldflags (ccflags.U):
3410 This variable contains any additional C loader flags desired by
3411 the user. It is up to the Makefile to use this.
3413 ldflags_uselargefiles (uselfs.U):
3414 This variable contains the loader flags needed by large file builds
3415 and added to ldflags by hints files.
3417 ldlibpthname (libperl.U):
3418 This variable holds the name of the shared library
3419 search path, often LD_LIBRARY_PATH. To get an empty
3420 string, the hints file must set this to 'none'.
3423 This variable is used internally by Configure to determine the
3424 full pathname (if any) of the less program. After Configure runs,
3425 the value is reset to a plain "less" and is not useful.
3428 This is an old synonym for _a.
3431 This variable contains the location of the C library.
3433 libperl (libperl.U):
3434 The perl executable is obtained by linking perlmain.c with
3435 libperl, any static extensions (usually just DynaLoader),
3436 and any other libraries needed on this system. libperl
3437 is usually libperl.a, but can also be libperl.so.xxx if
3438 the user wishes to build a perl executable with a shared
3442 This variable holds the general path (space-separated) used to find
3443 libraries. It is intended to be used by other units.
3446 This variable holds the additional libraries we want to use.
3447 It is up to the Makefile to deal with it. The list can be empty.
3450 This variable holds the directory names aka dirnames of the libraries
3451 we found and accepted, duplicates are removed.
3454 This variable holds the filenames aka basenames of the libraries
3455 we found and accepted.
3458 This variable holds the full pathnames of the libraries
3459 we found and accepted.
3462 This variable holds the directory names probed for libraries.
3464 libswanted (Myinit.U):
3465 This variable holds a list of all the libraries we want to
3466 search. The order is chosen to pick up the c library
3467 ahead of ucb or bsd libraries for SVR4.
3469 libswanted_uselargefiles (uselfs.U):
3470 This variable contains the libraries needed by large file builds
3471 and added to ldflags by hints files. It is a space separated list
3472 of the library names without the "lib" prefix or any suffix, just
3476 This variable is defined but not used by Configure.
3477 The value is a plain '' and is not useful.
3480 This variable is defined but not used by Configure.
3481 The value is a plain '' and is not useful.
3483 lkflags (ccflags.U):
3484 This variable contains any additional C partial linker flags desired by
3485 the user. It is up to the Makefile to use this.
3488 This variable is used internally by Configure to determine the
3489 full pathname (if any) of the ln program. After Configure runs,
3490 the value is reset to a plain "ln" and is not useful.
3493 This variable holds the name of the command to make
3494 symbolic links (if they are supported). It can be used
3495 in the Makefile. It is either 'ln -s' or 'ln'
3497 localtime_r_proto (d_localtime_r.U):
3498 This variable encodes the prototype of localtime_r.
3499 It is zero if d_localtime_r is undef, and one of the
3500 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3503 locincpth (ccflags.U):
3504 This variable contains a list of additional directories to be
3505 searched by the compiler. The appropriate '-I' directives will
3506 be added to ccflags. This is intended to simplify setting
3507 local directories from the Configure command line.
3508 It's not much, but it parallels the loclibpth stuff in libpth.U.
3510 loclibpth (libpth.U):
3511 This variable holds the paths (space-separated) used to find local
3512 libraries. It is prepended to libpth, and is intended to be easily
3513 set from the command line.
3515 longdblsize (d_longdbl.U):
3516 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3517 indicates to the C program how many bytes there are in a long double,
3518 if this system supports long doubles.
3520 longlongsize (d_longlong.U):
3521 This variable contains the value of the LONGLONGSIZE symbol, which
3522 indicates to the C program how many bytes there are in a long long,
3523 if this system supports long long.
3525 longsize (intsize.U):
3526 This variable contains the value of the LONGSIZE symbol, which
3527 indicates to the C program how many bytes there are in a long.
3530 This variable is defined but not used by Configure.
3531 The value is a plain '' and is not useful.
3534 This variable is defined but not used by Configure.
3535 The value is a plain '' and is not useful.
3538 This variable is used internally by Configure to determine the
3539 full pathname (if any) of the ls program. After Configure runs,
3540 the value is reset to a plain "ls" and is not useful.
3542 lseeksize (lseektype.U):
3543 This variable defines lseektype to be something like off_t, long,
3544 or whatever type is used to declare lseek offset's type in the
3545 kernel (which also appears to be lseek's return type).
3547 lseektype (lseektype.U):
3548 This variable defines lseektype to be something like off_t, long,
3549 or whatever type is used to declare lseek offset's type in the
3550 kernel (which also appears to be lseek's return type).
3553 This variable indicates that the Misc Attribute Definition code is to
3557 If the Misc Attribute Decoration is to be compiled, this variable is
3558 set to the name of the extra header files to be used, else it is ''
3561 If the Misc Attribute Decoration is to be compiled, this variable is
3562 set to the name of the extra object files to be used, else it is ''
3565 If the Misc Attribute Decoration is to be compiled, this variable is
3566 set to the name of the extra C source files to be used, else it is ''
3569 This variable is defined but not used by Configure.
3570 The value is a plain '' and is not useful.
3573 This variable is defined but not used by Configure.
3574 The value is a plain '' and is not useful.
3577 This variable is used internally by Configure to determine the
3578 full pathname (if any) of the make program. After Configure runs,
3579 the value is reset to a plain "make" and is not useful.
3581 make_set_make (make.U):
3582 Some versions of 'make' set the variable MAKE. Others do not.
3583 This variable contains the string to be included in Makefile.SH
3584 so that MAKE is set if needed, and not if not needed.
3585 Possible values are:
3587 make_set_make='#' # If your make program handles this for you,
3589 make_set_make="MAKE=$make" # if it doesn't.
3591 This uses a comment character to distinguish a
3592 'set' value (from a previous config.sh or Configure '-D' option)
3593 from an uncomputed value.
3595 mallocobj (mallocsrc.U):
3596 This variable contains the name of the malloc.o that this package
3597 generates, if that malloc.o is preferred over the system malloc.
3598 Otherwise the value is null. This variable is intended for generating
3599 Makefiles. See mallocsrc.
3601 mallocsrc (mallocsrc.U):
3602 This variable contains the name of the malloc.c that comes with
3603 the package, if that malloc.c is preferred over the system malloc.
3604 Otherwise the value is null. This variable is intended for generating
3607 malloctype (mallocsrc.U):
3608 This variable contains the kind of ptr returned by malloc and realloc.
3610 man1dir (man1dir.U):
3611 This variable contains the name of the directory in which manual
3612 source pages are to be put. It is the responsibility of the
3613 Makefile.SH to get the value of this into the proper command.
3614 You must be prepared to do the ~name expansion yourself.
3616 man1direxp (man1dir.U):
3617 This variable is the same as the man1dir variable, but is filename
3618 expanded at configuration time, for convenient use in makefiles.
3620 man1ext (man1dir.U):
3621 This variable contains the extension that the manual page should
3622 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3625 man3dir (man3dir.U):
3626 This variable contains the name of the directory in which manual
3627 source pages are to be put. It is the responsibility of the
3628 Makefile.SH to get the value of this into the proper command.
3629 You must be prepared to do the ~name expansion yourself.
3631 man3direxp (man3dir.U):
3632 This variable is the same as the man3dir variable, but is filename
3633 expanded at configuration time, for convenient use in makefiles.
3635 man3ext (man3dir.U):
3636 This variable contains the extension that the manual page should
3637 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3641 This variable is used internally by Configure to determine the
3642 full pathname (if any) of the Mcc program. After Configure runs,
3643 the value is reset to a plain "Mcc" and is not useful.
3645 mips_type (usrinc.U):
3646 This variable holds the environment type for the mips system.
3647 Possible values are "BSD 4.3" and "System V".
3649 mistrustnm (Csym.U):
3650 This variable can be used to establish a fallthrough for the cases
3651 where nm fails to find a symbol. If usenm is false or usenm is true
3652 and mistrustnm is false, this variable has no effect. If usenm is true
3653 and mistrustnm is "compile", a test program will be compiled to try to
3654 find any symbol that can't be located via nm lookup. If mistrustnm is
3655 "run", the test program will be run as well as being compiled.
3658 This variable is used internally by Configure to determine the
3659 full pathname (if any) of the mkdir program. After Configure runs,
3660 the value is reset to a plain "mkdir" and is not useful.
3662 mmaptype (d_mmap.U):
3663 This symbol contains the type of pointer returned by mmap()
3664 (and simultaneously the type of the first argument).
3665 It can be 'void *' or 'caddr_t'.
3667 modetype (modetype.U):
3668 This variable defines modetype to be something like mode_t,
3669 int, unsigned short, or whatever type is used to declare file
3670 modes for system calls.
3673 This variable is used internally by Configure to determine the
3674 full pathname (if any) of the more program. After Configure runs,
3675 the value is reset to a plain "more" and is not useful.
3677 multiarch (multiarch.U):
3678 This variable conditionally defines the MULTIARCH symbol
3679 which signifies the presence of multiplatform files.
3680 This is normally set by hints files.
3683 This variable is defined but not used by Configure.
3684 The value is a plain '' and is not useful.
3686 myarchname (archname.U):
3687 This variable holds the architecture name computed by Configure in
3688 a previous run. It is not intended to be perused by any user and
3689 should never be set in a hint file.
3691 mydomain (myhostname.U):
3692 This variable contains the eventual value of the MYDOMAIN symbol,
3693 which is the domain of the host the program is going to run on.
3694 The domain must be appended to myhostname to form a complete host name.
3695 The dot comes with mydomain, and need not be supplied by the program.
3697 myhostname (myhostname.U):
3698 This variable contains the eventual value of the MYHOSTNAME symbol,
3699 which is the name of the host the program is going to run on.
3700 The domain is not kept with hostname, but must be gotten from mydomain.
3701 The dot comes with mydomain, and need not be supplied by the program.
3703 myuname (Oldconfig.U):
3704 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3705 pseudo variables assignments in the output are stripped, thank you. The
3706 whole thing is then lower-cased.
3709 This variable contains the '-n' flag if that is what causes the echo
3710 command to suppress newline. Otherwise it is null. Correct usage is
3711 $echo $n "prompt for a question: $c".
3713 need_va_copy (need_va_copy.U):
3714 This symbol, if defined, indicates that the system stores
3715 the variable argument list datatype, va_list, in a format
3716 that cannot be copied by simple assignment, so that some
3717 other means must be used when copying is required.
3718 As such systems vary in their provision (or non-provision)
3719 of copying mechanisms, handy.h defines a platform-
3720 independent macro, Perl_va_copy(src, dst), to do the job.
3722 netdb_hlen_type (netdbtype.U):
3723 This variable holds the type used for the 2nd argument to
3724 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3725 This is only useful if you have gethostbyaddr(), naturally.
3727 netdb_host_type (netdbtype.U):
3728 This variable holds the type used for the 1st argument to
3729 gethostbyaddr(). Usually, this is char * or void *, possibly
3730 with or without a const prefix.
3731 This is only useful if you have gethostbyaddr(), naturally.
3733 netdb_name_type (netdbtype.U):
3734 This variable holds the type used for the argument to
3735 gethostbyname(). Usually, this is char * or const char *.
3736 This is only useful if you have gethostbyname(), naturally.
3738 netdb_net_type (netdbtype.U):
3739 This variable holds the type used for the 1st argument to
3740 getnetbyaddr(). Usually, this is int or long.
3741 This is only useful if you have getnetbyaddr(), naturally.
3744 This variable is used internally by Configure to determine the
3745 full pathname (if any) of the nm program. After Configure runs,
3746 the value is reset to a plain "nm" and is not useful.
3749 This variable holds the options that may be necessary for nm.
3751 nm_so_opt (usenm.U):
3752 This variable holds the options that may be necessary for nm
3753 to work on a shared library but that can not be used on an
3754 archive library. Currently, this is only used by Linux, where
3755 nm --dynamic is *required* to get symbols from an ELF library which
3756 has been stripped, but nm --dynamic is *fatal* on an archive library.
3757 Maybe Linux should just always set usenm=false.
3759 nonxs_ext (Extensions.U):
3760 This variable holds a list of all non-xs extensions included
3761 in the package. All of them will be built.
3764 This variable is used internally by Configure to determine the
3765 full pathname (if any) of the nroff program. After Configure runs,
3766 the value is reset to a plain "nroff" and is not useful.
3768 nv_preserves_uv_bits (perlxv.U):
3769 This variable indicates how many of bits type uvtype
3770 a variable nvtype can preserve.
3772 nveformat (perlxvf.U):
3773 This variable contains the format string used for printing
3774 a Perl NV using %e-ish floating point format.
3776 nvEUformat (perlxvf.U):
3777 This variable contains the format string used for printing
3778 a Perl NV using %E-ish floating point format.
3780 nvfformat (perlxvf.U):
3781 This variable confains the format string used for printing
3782 a Perl NV using %f-ish floating point format.
3784 nvFUformat (perlxvf.U):
3785 This variable confains the format string used for printing
3786 a Perl NV using %F-ish floating point format.
3788 nvgformat (perlxvf.U):
3789 This variable contains the format string used for printing
3790 a Perl NV using %g-ish floating point format.
3792 nvGUformat (perlxvf.U):
3793 This variable contains the format string used for printing
3794 a Perl NV using %G-ish floating point format.
3797 This variable is the size of an NV in bytes.
3800 This variable contains the C type used for Perl's NV.
3802 o_nonblock (nblock_io.U):
3803 This variable bears the symbol value to be used during open() or fcntl()
3804 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3805 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3806 but that is only supported by some devices.
3809 This is an old synonym for _o.
3811 old_pthread_create_joinable (d_pthrattrj.U):
3812 This variable defines the constant to use for creating joinable
3813 (aka undetached) pthreads. Unused if pthread.h defines
3814 PTHREAD_CREATE_JOINABLE. If used, possible values are
3815 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3817 optimize (ccflags.U):
3818 This variable contains any optimizer/debugger flag that should be used.
3819 It is up to the Makefile to use it.
3821 orderlib (orderlib.U):
3822 This variable is "true" if the components of libraries must be ordered
3823 (with `lorder $* | tsort`) before placing them in an archive. Set to
3824 "false" if ranlib or ar can generate random libraries.
3826 osname (Oldconfig.U):
3827 This variable contains the operating system name (e.g. sunos,
3828 solaris, hpux, etc.). It can be useful later on for setting
3829 defaults. Any spaces are replaced with underscores. It is set
3830 to a null string if we can't figure it out.
3832 osvers (Oldconfig.U):
3833 This variable contains the operating system version (e.g.
3834 4.1.3, 5.2, etc.). It is primarily used for helping select
3835 an appropriate hints file, but might be useful elsewhere for
3836 setting defaults. It is set to '' if we can't figure it out.
3837 We try to be flexible about how much of the version number
3838 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3839 same for this package, hints files might just be os_4.0 or
3840 os_4.1, etc., not keeping separate files for each little release.
3842 otherlibdirs (otherlibdirs.U):
3843 This variable contains a colon-separated set of paths for the perl
3844 binary to search for additional library files or modules.
3845 These directories will be tacked to the end of @INC.
3846 Perl will automatically search below each path for version-
3847 and architecture-specific directories. See inc_version_list
3849 A value of ' ' means 'none' and is used to preserve this value
3850 for the next run through Configure.
3852 package (package.U):
3853 This variable contains the name of the package being constructed.
3854 It is primarily intended for the use of later Configure units.
3857 This variable contains the name of the preferred pager on the system.
3858 Usual values are (the full pathnames of) more, less, pg, or cat.
3861 This variable contains a command that produces the text of the
3862 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3863 "ypcat passwd" when NIS is used.
3864 On some systems, such as os390, there may be no equivalent
3865 command, in which case this variable is unset.
3867 patchlevel (patchlevel.U):
3868 The patchlevel level of this package.
3869 The value of patchlevel comes from the patchlevel.h file.
3870 In a version number such as 5.6.1, this is the "6".
3871 In patchlevel.h, this is referred to as "PERL_VERSION".
3874 This is an old synonym for p_ in Head.U, the character
3875 used to separate elements in the command shell search PATH.
3878 This variable is defined but not used by Configure.
3879 The value is a plain '' and is not useful.
3882 This variable contains the full path (if any) to a previously
3883 installed perl5.005 or later suitable for running the script
3884 to determine inc_version_list.
3886 PERL_API_REVISION (patchlevel.h):
3887 This number describes the earliest compatible PERL_REVISION of
3888 Perl ("compatibility" here being defined as sufficient binary/API
3889 compatibility to run XS code built with the older version).
3890 Normally this does not change across maintenance releases.
3891 Please read the comment in patchlevel.h.
3893 PERL_API_SUBVERSION (patchlevel.h):
3894 This number describes the earliest compatible PERL_SUBVERSION of
3895 Perl ("compatibility" here being defined as sufficient binary/API
3896 compatibility to run XS code built with the older version).
3897 Normally this does not change across maintenance releases.
3898 Please read the comment in patchlevel.h.
3900 PERL_API_VERSION (patchlevel.h):
3901 This number describes the earliest compatible PERL_VERSION of
3902 Perl ("compatibility" here being defined as sufficient binary/API
3903 compatibility to run XS code built with the older version).
3904 Normally this does not change across maintenance releases.
3905 Please read the comment in patchlevel.h.
3907 PERL_CONFIG_SH (Oldsyms.U):
3908 This is set to 'true' in config.sh so that a shell script
3909 sourcing config.sh can tell if it has been sourced already.
3911 PERL_PATCHLEVEL (Oldsyms.U):
3912 This symbol reflects the patchlevel, if available. Will usually
3913 come from the .patch file, which is available when the perl
3914 source tree was fetched with rsync.
3916 perl_patchlevel (patchlevel.U):
3917 This is the Perl patch level, a numeric change identifier,
3918 as defined by whichever source code maintenance system
3919 is used to maintain the patches; currently Perforce.
3920 It does not correlate with the Perl version numbers or
3921 the maintenance versus development dichotomy except
3922 by also being increasing.
3924 PERL_REVISION (Oldsyms.U):
3925 In a Perl version number such as 5.6.2, this is the 5.
3926 This value is manually set in patchlevel.h
3928 PERL_SUBVERSION (Oldsyms.U):
3929 In a Perl version number such as 5.6.2, this is the 2.
3930 Values greater than 50 represent potentially unstable
3931 development subversions.
3932 This value is manually set in patchlevel.h
3934 PERL_VERSION (Oldsyms.U):
3935 In a Perl version number such as 5.6.2, this is the 6.
3936 This value is manually set in patchlevel.h
3938 perladmin (perladmin.U):
3939 Electronic mail address of the perl5 administrator.
3942 The list of libraries needed by Perl only (any libraries needed
3943 by extensions only will by dropped, if using dynamic loading).
3945 perlpath (perlpath.U):
3946 This variable contains the eventual value of the PERLPATH symbol,
3947 which contains the name of the perl interpreter to be used in
3948 shell scripts and in the "eval 'exec'" idiom. This variable is
3949 not necessarily the pathname of the file containing the perl
3950 interpreter; you must append the executable extension (_exe) if
3951 it is not already present. Note that Perl code that runs during
3952 the Perl build process cannot reference this variable, as Perl
3953 may not have been installed, or even if installed, may be a
3954 different version of Perl.
3957 This variable is used internally by Configure to determine the
3958 full pathname (if any) of the pg program. After Configure runs,
3959 the value is reset to a plain "pg" and is not useful.
3961 phostname (myhostname.U):
3962 This variable contains the eventual value of the PHOSTNAME symbol,
3963 which is a command that can be fed to popen() to get the host name.
3964 The program should probably not presume that the domain is or isn't
3967 pidtype (pidtype.U):
3968 This variable defines PIDTYPE to be something like pid_t, int,
3969 ushort, or whatever type is used to declare process ids in the kernel.
3972 Holds the private path used by Configure to find out the libraries.
3973 Its value is prepend to libpth. This variable takes care of special
3974 machines, like the mips. Usually, it should be empty.
3977 This variable is defined but not used by Configure.
3978 The value is a plain '' and is not useful.
3981 This variable is defined but not used by Configure.
3982 The value is a plain '' and is not useful.
3985 This variable holds the name of the directory below which the
3986 user will install the package. Usually, this is /usr/local, and
3987 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3988 man pages in /usr/local/man, etc. It is only used to set defaults
3989 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3991 prefixexp (prefix.U):
3992 This variable holds the full absolute path of the directory below
3993 which the user will install the package. Derived from prefix.
3995 privlib (privlib.U):
3996 This variable contains the eventual value of the PRIVLIB symbol,
3997 which is the name of the private library for this package. It may
3998 have a ~ on the front. It is up to the makefile to eventually create
3999 this directory while performing installation (with ~ substitution).
4001 privlibexp (privlib.U):
4002 This variable is the ~name expanded version of privlib, so that you
4003 may use it directly in Makefiles or shell scripts.
4005 procselfexe (d_procselfexe.U):
4006 If d_procselfexe is defined, $procselfexe is the filename
4007 of the symbolic link pointing to the absolute pathname of
4008 the executing program.
4010 prototype (prototype.U):
4011 This variable holds the eventual value of CAN_PROTOTYPE, which
4012 indicates the C compiler can handle funciton prototypes.
4014 ptrsize (ptrsize.U):
4015 This variable contains the value of the PTRSIZE symbol, which
4016 indicates to the C program how many bytes there are in a pointer.
4018 quadkind (quadtype.U):
4019 This variable, if defined, encodes the type of a quad:
4020 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4022 quadtype (quadtype.U):
4023 This variable defines Quad_t to be something like long, int,
4024 long long, int64_t, or whatever type is used for 64-bit integers.
4026 randbits (randfunc.U):
4027 Indicates how many bits are produced by the function used to
4028 generate normalized random numbers.
4030 randfunc (randfunc.U):
4031 Indicates the name of the random number function to use.
4032 Values include drand48, random, and rand. In C programs,
4033 the 'Drand01' macro is defined to generate uniformly distributed
4034 random numbers over the range [0., 1.[ (see drand01 and nrand).
4036 random_r_proto (d_random_r.U):
4037 This variable encodes the prototype of random_r.
4038 It is zero if d_random_r is undef, and one of the
4039 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4042 randseedtype (randfunc.U):
4043 Indicates the type of the argument of the seedfunc.
4045 ranlib (orderlib.U):
4046 This variable is set to the pathname of the ranlib program, if it is
4047 needed to generate random libraries. Set to ":" if ar can generate
4048 random libraries or if random libraries are not supported
4050 rd_nodata (nblock_io.U):
4051 This variable holds the return code from read() when no data is
4052 present. It should be -1, but some systems return 0 when O_NDELAY is
4053 used, which is a shame because you cannot make the difference between
4054 no data and an EOF.. Sigh!
4056 readdir64_r_proto (d_readdir64_r.U):
4057 This variable encodes the prototype of readdir64_r.
4058 It is zero if d_readdir64_r is undef, and one of the
4059 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4062 readdir_r_proto (d_readdir_r.U):
4063 This variable encodes the prototype of readdir_r.
4064 It is zero if d_readdir_r is undef, and one of the
4065 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4068 revision (patchlevel.U):
4069 The value of revision comes from the patchlevel.h file.
4070 In a version number such as 5.6.1, this is the "5".
4071 In patchlevel.h, this is referred to as "PERL_REVISION".
4074 This variable is used internally by Configure to determine the
4075 full pathname (if any) of the rm program. After Configure runs,
4076 the value is reset to a plain "rm" and is not useful.
4079 This variable is defined but not used by Configure.
4080 The value is a plain '' and is not useful.
4083 This variable contains the command used by Configure
4084 to copy and execute a cross-compiled executable in the
4085 target host. Useful and available only during Perl build.
4086 Empty string '' if not cross-compiling.
4089 This variable contains 'true' or 'false' depending whether the
4090 nm extraction should be performed or not, according to the value
4091 of usenm and the flags on the Configure command line.
4093 sched_yield (d_pthread_y.U):
4094 This variable defines the way to yield the execution
4095 of the current thread.
4097 scriptdir (scriptdir.U):
4098 This variable holds the name of the directory in which the user wants
4099 to put publicly scripts for the package in question. It is either
4100 the same directory as for binaries, or a special one that can be
4101 mounted across different architectures, like /usr/share. Programs
4102 must be prepared to deal with ~name expansion.
4104 scriptdirexp (scriptdir.U):
4105 This variable is the same as scriptdir, but is filename expanded
4106 at configuration time, for programs not wanting to bother with it.
4109 This variable is used internally by Configure to determine the
4110 full pathname (if any) of the sed program. After Configure runs,
4111 the value is reset to a plain "sed" and is not useful.
4113 seedfunc (randfunc.U):
4114 Indicates the random number generating seed function.
4115 Values include srand48, srandom, and srand.
4117 selectminbits (selectminbits.U):
4118 This variable holds the minimum number of bits operated by select.
4119 That is, if you do select(n, ...), how many bits at least will be
4120 cleared in the masks if some activity is detected. Usually this
4121 is either n or 32*ceil(n/32), especially many little-endians do
4122 the latter. This is only useful if you have select(), naturally.
4124 selecttype (selecttype.U):
4125 This variable holds the type used for the 2nd, 3rd, and 4th
4126 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4127 is defined, and 'int *' otherwise. This is only useful if you
4128 have select(), naturally.
4131 This variable is defined but not used by Configure.
4132 The value is a plain '' and is not useful.
4134 setgrent_r_proto (d_setgrent_r.U):
4135 This variable encodes the prototype of setgrent_r.
4136 It is zero if d_setgrent_r is undef, and one of the
4137 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4140 sethostent_r_proto (d_sethostent_r.U):
4141 This variable encodes the prototype of sethostent_r.
4142 It is zero if d_sethostent_r is undef, and one of the
4143 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4146 setlocale_r_proto (d_setlocale_r.U):
4147 This variable encodes the prototype of setlocale_r.
4148 It is zero if d_setlocale_r is undef, and one of the
4149 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4152 setnetent_r_proto (d_setnetent_r.U):
4153 This variable encodes the prototype of setnetent_r.
4154 It is zero if d_setnetent_r is undef, and one of the
4155 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4158 setprotoent_r_proto (d_setprotoent_r.U):
4159 This variable encodes the prototype of setprotoent_r.
4160 It is zero if d_setprotoent_r is undef, and one of the
4161 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4164 setpwent_r_proto (d_setpwent_r.U):
4165 This variable encodes the prototype of setpwent_r.
4166 It is zero if d_setpwent_r is undef, and one of the
4167 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4170 setservent_r_proto (d_setservent_r.U):
4171 This variable encodes the prototype of setservent_r.
4172 It is zero if d_setservent_r is undef, and one of the
4173 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4177 This variable contains the full pathname of the shell used
4178 on this system to execute Bourne shell scripts. Usually, this will be
4179 /bin/sh, though it's possible that some systems will have /bin/ksh,
4180 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4182 This unit comes before Options.U, so you can't set sh with a '-D'
4183 option, though you can override this (and startsh)
4184 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4187 This variable is defined but not used by Configure.
4188 The value is a plain '' and is not useful.
4190 sharpbang (spitshell.U):
4191 This variable contains the string #! if this system supports that
4194 shmattype (d_shmat.U):
4195 This symbol contains the type of pointer returned by shmat().
4196 It can be 'void *' or 'char *'.
4198 shortsize (intsize.U):
4199 This variable contains the value of the SHORTSIZE symbol which
4200 indicates to the C program how many bytes there are in a short.
4202 shrpenv (libperl.U):
4203 If the user builds a shared libperl.so, then we need to tell the
4204 'perl' executable where it will be able to find the installed libperl.so.
4205 One way to do this on some systems is to set the environment variable
4206 LD_RUN_PATH to the directory that will be the final location of the
4207 shared libperl.so. The makefile can use this with something like
4208 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4210 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4213 See the main perl Makefile.SH for actual working usage.
4214 Alternatively, we might be able to use a command line option such
4215 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4216 $archlibexp/CORE (Linux).
4218 shsharp (spitshell.U):
4219 This variable tells further Configure units whether your sh can
4222 sig_count (sig_name.U):
4223 This variable holds a number larger than the largest valid
4224 signal number. This is usually the same as the NSIG macro.
4226 sig_name (sig_name.U):
4227 This variable holds the signal names, space separated. The leading
4228 SIG in signal name is removed. A ZERO is prepended to the list.
4229 This is currently not used, sig_name_init is used instead.
4231 sig_name_init (sig_name.U):
4232 This variable holds the signal names, enclosed in double quotes and
4233 separated by commas, suitable for use in the SIG_NAME definition
4234 below. A "ZERO" is prepended to the list, and the list is
4235 terminated with a plain 0. The leading SIG in signal names
4236 is removed. See sig_num.
4238 sig_num (sig_name.U):
4239 This variable holds the signal numbers, space separated. A ZERO is
4240 prepended to the list (corresponding to the fake SIGZERO).
4241 Those numbers correspond to the value of the signal listed
4242 in the same place within the sig_name list.
4243 This is currently not used, sig_num_init is used instead.
4245 sig_num_init (sig_name.U):
4246 This variable holds the signal numbers, enclosed in double quotes and
4247 separated by commas, suitable for use in the SIG_NUM definition
4248 below. A "ZERO" is prepended to the list, and the list is
4249 terminated with a plain 0.
4251 sig_size (sig_name.U):
4252 This variable contains the number of elements of the sig_name
4255 signal_t (d_voidsig.U):
4256 This variable holds the type of the signal handler (void or int).
4258 sitearch (sitearch.U):
4259 This variable contains the eventual value of the SITEARCH symbol,
4260 which is the name of the private library for this package. It may
4261 have a ~ on the front. It is up to the makefile to eventually create
4262 this directory while performing installation (with ~ substitution).
4263 The standard distribution will put nothing in this directory.
4264 After perl has been installed, users may install their own local
4265 architecture-dependent modules in this directory with
4266 MakeMaker Makefile.PL
4267 or equivalent. See INSTALL for details.
4269 sitearchexp (sitearch.U):
4270 This variable is the ~name expanded version of sitearch, so that you
4271 may use it directly in Makefiles or shell scripts.
4273 sitebin (sitebin.U):
4274 This variable holds the name of the directory in which the user wants
4275 to put add-on publicly executable files for the package in question. It
4276 is most often a local directory such as /usr/local/bin. Programs using
4277 this variable must be prepared to deal with ~name substitution.
4278 The standard distribution will put nothing in this directory.
4279 After perl has been installed, users may install their own local
4280 executables in this directory with
4281 MakeMaker Makefile.PL
4282 or equivalent. See INSTALL for details.
4284 sitebinexp (sitebin.U):
4285 This is the same as the sitebin variable, but is filename expanded at
4286 configuration time, for use in your makefiles.
4288 sitehtml1dir (sitehtml1dir.U):
4289 This variable contains the name of the directory in which site-specific
4290 html source pages are to be put. It is the responsibility of the
4291 Makefile.SH to get the value of this into the proper command.
4292 You must be prepared to do the ~name expansion yourself.
4293 The standard distribution will put nothing in this directory.
4294 After perl has been installed, users may install their own local
4295 html pages in this directory with
4296 MakeMaker Makefile.PL
4297 or equivalent. See INSTALL for details.
4299 sitehtml1direxp (sitehtml1dir.U):
4300 This variable is the same as the sitehtml1dir variable, but is filename
4301 expanded at configuration time, for convenient use in makefiles.
4303 sitehtml3dir (sitehtml3dir.U):
4304 This variable contains the name of the directory in which site-specific
4305 library html source pages are to be put. It is the responsibility of the
4306 Makefile.SH to get the value of this into the proper command.
4307 You must be prepared to do the ~name expansion yourself.
4308 The standard distribution will put nothing in this directory.
4309 After perl has been installed, users may install their own local
4310 library html pages in this directory with
4311 MakeMaker Makefile.PL
4312 or equivalent. See INSTALL for details.
4314 sitehtml3direxp (sitehtml3dir.U):
4315 This variable is the same as the sitehtml3dir variable, but is filename
4316 expanded at configuration time, for convenient use in makefiles.
4318 sitelib (sitelib.U):
4319 This variable contains the eventual value of the SITELIB symbol,
4320 which is the name of the private library for this package. It may
4321 have a ~ on the front. It is up to the makefile to eventually create
4322 this directory while performing installation (with ~ substitution).
4323 The standard distribution will put nothing in this directory.
4324 After perl has been installed, users may install their own local
4325 architecture-independent modules in this directory with
4326 MakeMaker Makefile.PL
4327 or equivalent. See INSTALL for details.
4329 sitelib_stem (sitelib.U):
4330 This variable is $sitelibexp with any trailing version-specific component
4331 removed. The elements in inc_version_list (inc_version_list.U) can
4332 be tacked onto this variable to generate a list of directories to search.
4334 sitelibexp (sitelib.U):
4335 This variable is the ~name expanded version of sitelib, so that you
4336 may use it directly in Makefiles or shell scripts.
4338 siteman1dir (siteman1dir.U):
4339 This variable contains the name of the directory in which site-specific
4340 manual source pages are to be put. It is the responsibility of the
4341 Makefile.SH to get the value of this into the proper command.
4342 You must be prepared to do the ~name expansion yourself.
4343 The standard distribution will put nothing in this directory.
4344 After perl has been installed, users may install their own local
4345 man1 pages in this directory with
4346 MakeMaker Makefile.PL
4347 or equivalent. See INSTALL for details.
4349 siteman1direxp (siteman1dir.U):
4350 This variable is the same as the siteman1dir variable, but is filename
4351 expanded at configuration time, for convenient use in makefiles.
4353 siteman3dir (siteman3dir.U):
4354 This variable contains the name of the directory in which site-specific
4355 library man source pages are to be put. It is the responsibility of the
4356 Makefile.SH to get the value of this into the proper command.
4357 You must be prepared to do the ~name expansion yourself.
4358 The standard distribution will put nothing in this directory.
4359 After perl has been installed, users may install their own local
4360 man3 pages in this directory with
4361 MakeMaker Makefile.PL
4362 or equivalent. See INSTALL for details.
4364 siteman3direxp (siteman3dir.U):
4365 This variable is the same as the siteman3dir variable, but is filename
4366 expanded at configuration time, for convenient use in makefiles.
4368 siteprefix (siteprefix.U):
4369 This variable holds the full absolute path of the directory below
4370 which the user will install add-on packages.
4371 See INSTALL for usage and examples.
4373 siteprefixexp (siteprefix.U):
4374 This variable holds the full absolute path of the directory below
4375 which the user will install add-on packages. Derived from siteprefix.
4377 sitescript (sitescript.U):
4378 This variable holds the name of the directory in which the user wants
4379 to put add-on publicly executable files for the package in question. It
4380 is most often a local directory such as /usr/local/bin. Programs using
4381 this variable must be prepared to deal with ~name substitution.
4382 The standard distribution will put nothing in this directory.
4383 After perl has been installed, users may install their own local
4384 scripts in this directory with
4385 MakeMaker Makefile.PL
4386 or equivalent. See INSTALL for details.
4388 sitescriptexp (sitescript.U):
4389 This is the same as the sitescript variable, but is filename expanded at
4390 configuration time, for use in your makefiles.
4392 sizesize (sizesize.U):
4393 This variable contains the size of a sizetype in bytes.
4395 sizetype (sizetype.U):
4396 This variable defines sizetype to be something like size_t,
4397 unsigned long, or whatever type is used to declare length
4398 parameters for string functions.
4401 This variable is defined but not used by Configure.
4402 The value is a plain '' and is not useful.
4405 This variable is defined but not used by Configure.
4406 The value is a plain '' and is not useful.
4409 This variable holds the extension used to identify shared libraries
4410 (also known as shared objects) on the system. Usually set to 'so'.
4412 sockethdr (d_socket.U):
4413 This variable has any cpp '-I' flags needed for socket support.
4415 socketlib (d_socket.U):
4416 This variable has the names of any libraries needed for socket support.
4418 socksizetype (socksizetype.U):
4419 This variable holds the type used for the size argument
4420 for various socket calls like accept. Usual values include
4421 socklen_t, size_t, and int.
4424 This variable is used internally by Configure to determine the
4425 full pathname (if any) of the sort program. After Configure runs,
4426 the value is reset to a plain "sort" and is not useful.
4428 spackage (package.U):
4429 This variable contains the name of the package being constructed,
4430 with the first letter uppercased, i.e. suitable for starting
4433 spitshell (spitshell.U):
4434 This variable contains the command necessary to spit out a runnable
4435 shell on this system. It is either cat or a grep '-v' for # comments.
4437 sPRId64 (quadfio.U):
4438 This variable, if defined, contains the string used by stdio to
4439 format 64-bit decimal numbers (format 'd') for output.
4441 sPRIeldbl (longdblfio.U):
4442 This variable, if defined, contains the string used by stdio to
4443 format long doubles (format 'e') for output.
4445 sPRIEUldbl (longdblfio.U):
4446 This variable, if defined, contains the string used by stdio to
4447 format long doubles (format 'E') for output.
4448 The 'U' in the name is to separate this from sPRIeldbl so that even
4449 case-blind systems can see the difference.
4451 sPRIfldbl (longdblfio.U):
4452 This variable, if defined, contains the string used by stdio to
4453 format long doubles (format 'f') for output.
4455 sPRIFUldbl (longdblfio.U):
4456 This variable, if defined, contains the string used by stdio to
4457 format long doubles (format 'F') for output.
4458 The 'U' in the name is to separate this from sPRIfldbl so that even
4459 case-blind systems can see the difference.
4461 sPRIgldbl (longdblfio.U):
4462 This variable, if defined, contains the string used by stdio to
4463 format long doubles (format 'g') for output.
4465 sPRIGUldbl (longdblfio.U):
4466 This variable, if defined, contains the string used by stdio to
4467 format long doubles (format 'G') for output.
4468 The 'U' in the name is to separate this from sPRIgldbl so that even
4469 case-blind systems can see the difference.
4471 sPRIi64 (quadfio.U):
4472 This variable, if defined, contains the string used by stdio to
4473 format 64-bit decimal numbers (format 'i') for output.
4475 sPRIo64 (quadfio.U):
4476 This variable, if defined, contains the string used by stdio to
4477 format 64-bit octal numbers (format 'o') for output.
4479 sPRIu64 (quadfio.U):
4480 This variable, if defined, contains the string used by stdio to
4481 format 64-bit unsigned decimal numbers (format 'u') for output.
4483 sPRIx64 (quadfio.U):
4484 This variable, if defined, contains the string used by stdio to
4485 format 64-bit hexadecimal numbers (format 'x') for output.
4487 sPRIXU64 (quadfio.U):
4488 This variable, if defined, contains the string used by stdio to
4489 format 64-bit hExADECimAl numbers (format 'X') for output.
4490 The 'U' in the name is to separate this from sPRIx64 so that even
4491 case-blind systems can see the difference.
4493 srand48_r_proto (d_srand48_r.U):
4494 This variable encodes the prototype of srand48_r.
4495 It is zero if d_srand48_r is undef, and one of the
4496 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4499 srandom_r_proto (d_srandom_r.U):
4500 This variable encodes the prototype of srandom_r.
4501 It is zero if d_srandom_r is undef, and one of the
4502 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4506 This variable holds the path to the package source. It is up to
4507 the Makefile to use this variable and set VPATH accordingly to
4508 find the sources remotely.
4510 sSCNfldbl (longdblfio.U):
4511 This variable, if defined, contains the string used by stdio to
4512 format long doubles (format 'f') for input.
4514 ssizetype (ssizetype.U):
4515 This variable defines ssizetype to be something like ssize_t,
4516 long or int. It is used by functions that return a count
4517 of bytes or an error condition. It must be a signed type.
4518 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4520 startperl (startperl.U):
4521 This variable contains the string to put on the front of a perl
4522 script to make sure (hopefully) that it runs with perl and not some
4523 shell. Of course, that leading line must be followed by the classical
4525 eval 'exec perl -S $0 ${1+"$@"}'
4526 if $running_under_some_shell;
4527 to guarantee perl startup should the shell execute the script. Note
4528 that this magic incatation is not understood by csh.
4530 startsh (startsh.U):
4531 This variable contains the string to put on the front of a shell
4532 script to make sure (hopefully) that it runs with sh and not some
4535 static_ext (Extensions.U):
4536 This variable holds a list of XS extension files we want to
4537 link statically into the package. It is used by Makefile.
4539 stdchar (stdchar.U):
4540 This variable conditionally defines STDCHAR to be the type of char
4541 used in stdio.h. It has the values "unsigned char" or "char".
4543 stdio_base (d_stdstdio.U):
4544 This variable defines how, given a FILE pointer, fp, to access the
4545 _base field (or equivalent) of stdio.h's FILE structure. This will
4546 be used to define the macro FILE_base(fp).
4548 stdio_bufsiz (d_stdstdio.U):
4549 This variable defines how, given a FILE pointer, fp, to determine
4550 the number of bytes store in the I/O buffer pointer to by the
4551 _base field (or equivalent) of stdio.h's FILE structure. This will
4552 be used to define the macro FILE_bufsiz(fp).
4554 stdio_cnt (d_stdstdio.U):
4555 This variable defines how, given a FILE pointer, fp, to access the
4556 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4557 be used to define the macro FILE_cnt(fp).
4559 stdio_filbuf (d_stdstdio.U):
4560 This variable defines how, given a FILE pointer, fp, to tell
4561 stdio to refill its internal buffers (?). This will
4562 be used to define the macro FILE_filbuf(fp).
4564 stdio_ptr (d_stdstdio.U):
4565 This variable defines how, given a FILE pointer, fp, to access the
4566 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4567 be used to define the macro FILE_ptr(fp).
4569 stdio_stream_array (stdio_streams.U):
4570 This variable tells the name of the array holding the stdio streams.
4571 Usual values include _iob, __iob, and __sF.
4573 strerror_r_proto (d_strerror_r.U):
4574 This variable encodes the prototype of strerror_r.
4575 It is zero if d_strerror_r is undef, and one of the
4576 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4579 strings (i_string.U):
4580 This variable holds the full path of the string header that will be
4581 used. Typically /usr/include/string.h or /usr/include/strings.h.
4584 This variable is defined but not used by Configure.
4585 The value is a plain '' and is not useful.
4587 subversion (patchlevel.U):
4588 The subversion level of this package.
4589 The value of subversion comes from the patchlevel.h file.
4590 In a version number such as 5.6.1, this is the "1".
4591 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4592 This is unique to perl.
4595 This variable holds the place where the manual is located on this
4596 system. It is not the place where the user wants to put his manual
4597 pages. Rather it is the place where Configure may look to find manual
4598 for unix commands (section 1 of the manual usually). See mansrc.
4601 This variable is defined but not used by Configure.
4602 The value is a plain '' and is not useful.
4605 This variable is defined but not used by Configure.
4606 The value is a plain '' and is not useful.
4608 targetarch (Cross.U):
4609 If cross-compiling, this variable contains the target architecture.
4610 If not, this will be empty.
4613 This variable is defined but not used by Configure.
4614 The value is a plain '' and is not useful.
4617 This variable is defined but not used by Configure.
4618 The value is a plain '' and is not useful.
4621 This variable is used internally by Configure to determine the
4622 full pathname (if any) of the test program. After Configure runs,
4623 the value is reset to a plain "test" and is not useful.
4625 timeincl (i_time.U):
4626 This variable holds the full path of the included time header(s).
4628 timetype (d_time.U):
4629 This variable holds the type returned by time(). It can be long,
4630 or time_t on BSD sites (in which case <sys/types.h> should be
4631 included). Anyway, the type Time_t should be used.
4633 tmpnam_r_proto (d_tmpnam_r.U):
4634 This variable encodes the prototype of tmpnam_r.
4635 It is zero if d_tmpnam_r is undef, and one of the
4636 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4640 This variable contains the command used by Configure
4641 to copy to from the target host. Useful and available
4642 only during Perl build.
4643 The string ':' if not cross-compiling.
4646 This variable is used internally by Configure to determine the
4647 full pathname (if any) of the touch program. After Configure runs,
4648 the value is reset to a plain "touch" and is not useful.
4651 This variable is used internally by Configure to determine the
4652 full pathname (if any) of the tr program. After Configure runs,
4653 the value is reset to a plain "tr" and is not useful.
4656 This variable contains the value to be passed to the tr(1)
4657 command to transliterate a newline. Typical values are
4658 '\012' and '\n'. This is needed for EBCDIC systems where
4659 newline is not necessarily '\012'.
4662 This variable is defined but not used by Configure.
4663 The value is a plain '' and is not useful.
4665 ttyname_r_proto (d_ttyname_r.U):
4666 This variable encodes the prototype of ttyname_r.
4667 It is zero if d_ttyname_r is undef, and one of the
4668 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4672 This variable is the size of an U16 in bytes.
4675 This variable contains the C type used for Perl's U16.
4678 This variable is the size of an U32 in bytes.
4681 This variable contains the C type used for Perl's U32.
4684 This variable is the size of an U64 in bytes.
4687 This variable contains the C type used for Perl's U64.
4690 This variable is the size of an U8 in bytes.
4693 This variable contains the C type used for Perl's U8.
4696 This variable contains the format string used for printing a Uid_t.
4698 uidsign (uidsign.U):
4699 This variable contains the signedness of a uidtype.
4700 1 for unsigned, -1 for signed.
4702 uidsize (uidsize.U):
4703 This variable contains the size of a uidtype in bytes.
4705 uidtype (uidtype.U):
4706 This variable defines Uid_t to be something like uid_t, int,
4707 ushort, or whatever type is used to declare user ids in the kernel.
4710 This variable is used internally by Configure to determine the
4711 full pathname (if any) of the uname program. After Configure runs,
4712 the value is reset to a plain "uname" and is not useful.
4715 This variable is used internally by Configure to determine the
4716 full pathname (if any) of the uniq program. After Configure runs,
4717 the value is reset to a plain "uniq" and is not useful.
4719 uquadtype (quadtype.U):
4720 This variable defines Uquad_t to be something like unsigned long,
4721 unsigned int, unsigned long long, uint64_t, or whatever type is
4722 used for 64-bit integers.
4724 use5005threads (usethreads.U):
4725 This variable conditionally defines the USE_5005THREADS symbol,
4726 and indicates that Perl should be built to use the 5.005-based
4727 threading implementation.
4729 use64bitall (use64bits.U):
4730 This variable conditionally defines the USE_64_BIT_ALL symbol,
4731 and indicates that 64-bit integer types should be used
4732 when available. The maximal possible
4733 64-bitness is employed: LP64 or ILP64, meaning that you will
4734 be able to use more than 2 gigabytes of memory. This mode is
4735 even more binary incompatible than USE_64_BIT_INT. You may not
4736 be able to run the resulting executable in a 32-bit CPU at all or
4737 you may need at least to reboot your OS to 64-bit mode.
4739 use64bitint (use64bits.U):
4740 This variable conditionally defines the USE_64_BIT_INT symbol,
4741 and indicates that 64-bit integer types should be used
4742 when available. The minimal possible 64-bitness
4743 is employed, just enough to get 64-bit integers into Perl.
4744 This may mean using for example "long longs", while your memory
4745 may still be limited to 2 gigabytes.
4747 usecrosscompile (Cross.U):
4748 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4749 and indicates that Perl has been cross-compiled.
4752 This variable indicates if the system supports dynamic
4753 loading of some sort. See also dlsrc and dlobj.
4755 usefaststdio (usefaststdio.U):
4756 This variable conditionally defines the USE_FAST_STDIO symbol,
4757 and indicates that Perl should be built to use 'fast stdio'.
4758 Defaults to define in Perls 5.8 and earlier, to undef later.
4760 useithreads (usethreads.U):
4761 This variable conditionally defines the USE_ITHREADS symbol,
4762 and indicates that Perl should be built to use the interpreter-based
4763 threading implementation.
4765 uselargefiles (uselfs.U):
4766 This variable conditionally defines the USE_LARGE_FILES symbol,
4767 and indicates that large file interfaces should be used when
4770 uselongdouble (uselongdbl.U):
4771 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4772 and indicates that long doubles should be used when available.
4774 usemallocwrap (mallocsrc.U):
4775 This variable contains y if we are wrapping malloc to prevent
4776 integer overflow during size calculations.
4778 usemorebits (usemorebits.U):
4779 This variable conditionally defines the USE_MORE_BITS symbol,
4780 and indicates that explicit 64-bit interfaces and long doubles
4781 should be used when available.
4783 usemultiplicity (usemultiplicity.U):
4784 This variable conditionally defines the MULTIPLICITY symbol,
4785 and indicates that Perl should be built to use multiplicity.
4787 usemymalloc (mallocsrc.U):
4788 This variable contains y if the malloc that comes with this package
4789 is desired over the system's version of malloc. People often include
4790 special versions of malloc for effiency, but such versions are often
4791 less portable. See also mallocsrc and mallocobj.
4792 If this is 'y', then -lmalloc is removed from $libs.
4795 This variable contains 'true' or 'false' depending whether the
4796 nm extraction is wanted or not.
4798 useopcode (Extensions.U):
4799 This variable holds either 'true' or 'false' to indicate
4800 whether the Opcode extension should be used. The sole
4801 use for this currently is to allow an easy mechanism
4802 for users to skip the Opcode extension from the Configure
4805 useperlio (useperlio.U):
4806 This variable conditionally defines the USE_PERLIO symbol,
4807 and indicates that the PerlIO abstraction should be
4810 useposix (Extensions.U):
4811 This variable holds either 'true' or 'false' to indicate
4812 whether the POSIX extension should be used. The sole
4813 use for this currently is to allow an easy mechanism
4814 for hints files to indicate that POSIX will not compile
4815 on a particular system.
4817 usereentrant (usethreads.U):
4818 This variable conditionally defines the USE_REENTRANT_API symbol,
4819 which indicates that the thread code may try to use the various
4820 _r versions of library functions. This is only potentially
4821 meaningful if usethreads is set and is very experimental, it is
4822 not even prompted for.
4824 userelocatableinc (bin.U):
4825 This variable is set to true to indicate that perl should relocate
4826 @INC entries at runtime based on the path to the perl binary.
4827 Any @INC paths starting ".../" are relocated relative to the directory
4828 containing the perl binary, and a logical cleanup of the path is then
4829 made around the join point (removing "dir/../" pairs)
4832 This variable is set to true when the user agrees to use sfio.
4833 It is set to false when sfio is not available or when the user
4834 explicitely requests not to use sfio. It is here primarily so
4835 that command-line settings can override the auto-detection of
4836 d_sfio without running into a "WHOA THERE".
4838 useshrplib (libperl.U):
4839 This variable is set to 'true' if the user wishes
4840 to build a shared libperl, and 'false' otherwise.
4842 usesitecustomize (d_sitecustomize.U):
4843 This variable is set to true when the user requires a mechanism that
4844 allows the sysadmin to add entries to @INC at runtime. This variable
4845 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
4847 usesocks (usesocks.U):
4848 This variable conditionally defines the USE_SOCKS symbol,
4849 and indicates that Perl should be built to use SOCKS.
4851 usethreads (usethreads.U):
4852 This variable conditionally defines the USE_THREADS symbol,
4853 and indicates that Perl should be built to use threads.
4855 usevendorprefix (vendorprefix.U):
4856 This variable tells whether the vendorprefix
4857 and consequently other vendor* paths are in use.
4859 usevfork (d_vfork.U):
4860 This variable is set to true when the user accepts to use vfork.
4861 It is set to false when no vfork is available or when the user
4862 explicitely requests not to use vfork.
4865 This variable holds the path of the include files, which is
4866 usually /usr/include. It is mainly used by other Configure units.
4869 This variable is defined but not used by Configure.
4870 The value is a plain '' and is not useful.
4872 uvoformat (perlxvf.U):
4873 This variable contains the format string used for printing
4874 a Perl UV as an unsigned octal integer.
4877 This variable is the size of a UV in bytes.
4880 This variable contains the C type used for Perl's UV.
4882 uvuformat (perlxvf.U):
4883 This variable contains the format string used for printing
4884 a Perl UV as an unsigned decimal integer.
4886 uvxformat (perlxvf.U):
4887 This variable contains the format string used for printing
4888 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4890 uvXUformat (perlxvf.U):
4891 This variable contains the format string used for printing
4892 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4894 vendorarch (vendorarch.U):
4895 This variable contains the value of the PERL_VENDORARCH symbol.
4896 It may have a ~ on the front.
4897 The standard distribution will put nothing in this directory.
4898 Vendors who distribute perl may wish to place their own
4899 architecture-dependent modules and extensions in this directory with
4900 MakeMaker Makefile.PL INSTALLDIRS=vendor
4901 or equivalent. See INSTALL for details.
4903 vendorarchexp (vendorarch.U):
4904 This variable is the ~name expanded version of vendorarch, so that you
4905 may use it directly in Makefiles or shell scripts.
4907 vendorbin (vendorbin.U):
4908 This variable contains the eventual value of the VENDORBIN symbol.
4909 It may have a ~ on the front.
4910 The standard distribution will put nothing in this directory.
4911 Vendors who distribute perl may wish to place additional
4912 binaries in this directory with
4913 MakeMaker Makefile.PL INSTALLDIRS=vendor
4914 or equivalent. See INSTALL for details.
4916 vendorbinexp (vendorbin.U):
4917 This variable is the ~name expanded version of vendorbin, so that you
4918 may use it directly in Makefiles or shell scripts.
4920 vendorhtml1dir (vendorhtml1dir.U):
4921 This variable contains the name of the directory for html
4922 pages. It may have a ~ on the front.
4923 The standard distribution will put nothing in this directory.
4924 Vendors who distribute perl may wish to place their own
4925 html pages in this directory with
4926 MakeMaker Makefile.PL INSTALLDIRS=vendor
4927 or equivalent. See INSTALL for details.
4929 vendorhtml1direxp (vendorhtml1dir.U):
4930 This variable is the ~name expanded version of vendorhtml1dir, so that you
4931 may use it directly in Makefiles or shell scripts.
4933 vendorhtml3dir (vendorhtml3dir.U):
4934 This variable contains the name of the directory for html
4935 library pages. It may have a ~ on the front.
4936 The standard distribution will put nothing in this directory.
4937 Vendors who distribute perl may wish to place their own
4938 html pages for modules and extensions in this directory with
4939 MakeMaker Makefile.PL INSTALLDIRS=vendor
4940 or equivalent. See INSTALL for details.
4942 vendorhtml3direxp (vendorhtml3dir.U):
4943 This variable is the ~name expanded version of vendorhtml3dir, so that you
4944 may use it directly in Makefiles or shell scripts.
4946 vendorlib (vendorlib.U):
4947 This variable contains the eventual value of the VENDORLIB symbol,
4948 which is the name of the private library for this package.
4949 The standard distribution will put nothing in this directory.
4950 Vendors who distribute perl may wish to place their own
4951 modules in this directory with
4952 MakeMaker Makefile.PL INSTALLDIRS=vendor
4953 or equivalent. See INSTALL for details.
4955 vendorlib_stem (vendorlib.U):
4956 This variable is $vendorlibexp with any trailing version-specific component
4957 removed. The elements in inc_version_list (inc_version_list.U) can
4958 be tacked onto this variable to generate a list of directories to search.
4960 vendorlibexp (vendorlib.U):
4961 This variable is the ~name expanded version of vendorlib, so that you
4962 may use it directly in Makefiles or shell scripts.
4964 vendorman1dir (vendorman1dir.U):
4965 This variable contains the name of the directory for man1
4966 pages. It may have a ~ on the front.
4967 The standard distribution will put nothing in this directory.
4968 Vendors who distribute perl may wish to place their own
4969 man1 pages in this directory with
4970 MakeMaker Makefile.PL INSTALLDIRS=vendor
4971 or equivalent. See INSTALL for details.
4973 vendorman1direxp (vendorman1dir.U):
4974 This variable is the ~name expanded version of vendorman1dir, so that you
4975 may use it directly in Makefiles or shell scripts.
4977 vendorman3dir (vendorman3dir.U):
4978 This variable contains the name of the directory for man3
4979 pages. It may have a ~ on the front.
4980 The standard distribution will put nothing in this directory.
4981 Vendors who distribute perl may wish to place their own
4982 man3 pages in this directory with
4983 MakeMaker Makefile.PL INSTALLDIRS=vendor
4984 or equivalent. See INSTALL for details.
4986 vendorman3direxp (vendorman3dir.U):
4987 This variable is the ~name expanded version of vendorman3dir, so that you
4988 may use it directly in Makefiles or shell scripts.
4990 vendorprefix (vendorprefix.U):
4991 This variable holds the full absolute path of the directory below
4992 which the vendor will install add-on packages.
4993 See INSTALL for usage and examples.
4995 vendorprefixexp (vendorprefix.U):
4996 This variable holds the full absolute path of the directory below
4997 which the vendor will install add-on packages. Derived from vendorprefix.
4999 vendorscript (vendorscript.U):
5000 This variable contains the eventual value of the VENDORSCRIPT symbol.
5001 It may have a ~ on the front.
5002 The standard distribution will put nothing in this directory.
5003 Vendors who distribute perl may wish to place additional
5004 executable scripts in this directory with
5005 MakeMaker Makefile.PL INSTALLDIRS=vendor
5006 or equivalent. See INSTALL for details.
5008 vendorscriptexp (vendorscript.U):
5009 This variable is the ~name expanded version of vendorscript, so that you
5010 may use it directly in Makefiles or shell scripts.
5012 version (patchlevel.U):
5013 The full version number of this package, such as 5.6.1 (or 5_6_1).
5014 This combines revision, patchlevel, and subversion to get the
5015 full version number, including any possible subversions.
5016 This is suitable for use as a directory name, and hence is
5017 filesystem dependent.
5019 version_patchlevel_string (patchlevel.U):
5020 This is a string combining version, subversion and
5021 perl_patchlevel (if perl_patchlevel is non-zero).
5022 It is typically something like
5023 'version 7 subversion 1' or
5024 'version 7 subversion 1 patchlevel 11224'
5025 It is computed here to avoid duplication of code in myconfig.SH
5028 versiononly (versiononly.U):
5029 If set, this symbol indicates that only the version-specific
5030 components of a perl installation should be installed.
5031 This may be useful for making a test installation of a new
5032 version without disturbing the existing installation.
5033 Setting versiononly is equivalent to setting installperl's -v option.
5034 In particular, the non-versioned scripts and programs such as
5035 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5036 (see INSTALL for a more complete list). Nor are the man
5038 Usually, this is undef.
5041 This variable is defined but not used by Configure.
5042 The value is a plain '' and is not useful.
5044 voidflags (voidflags.U):
5045 This variable contains the eventual value of the VOIDFLAGS symbol,
5046 which indicates how much support of the void type is given by this
5047 compiler. See VOIDFLAGS for more info.
5050 This variable holds extra path (space-separated) used to find
5051 libraries on this platform, for example CPU-specific libraries
5052 (on multi-CPU platforms) may be listed here.
5055 This variable holds the name of the compiler compiler we
5056 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5059 This variable contains any additional yacc flags desired by the
5060 user. It is up to the Makefile to use this.
5063 This variable is defined but not used by Configure.
5064 The value is a plain '' and is not useful.
5067 This variable is used internally by Configure to determine the
5068 full pathname (if any) of the zip program. After Configure runs,
5069 the value is reset to a plain "zip" and is not useful.