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_c99_variadic_macros (d_c99_variadic.U):
486 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
487 symbol, which indicates to the C program that C99 variadic macros
490 d_casti32 (d_casti32.U):
491 This variable conditionally defines CASTI32, which indicates
492 whether the C compiler can cast large floats to 32-bit ints.
494 d_castneg (d_castneg.U):
495 This variable conditionally defines CASTNEG, which indicates
496 wether the C compiler can cast negative float to unsigned.
498 d_charvspr (d_vprintf.U):
499 This variable conditionally defines CHARVSPRINTF if this system
500 has vsprintf returning type (char*). The trend seems to be to
501 declare it as "int vsprintf()".
504 This variable conditionally defines the HAS_CHOWN symbol, which
505 indicates to the C program that the chown() routine is available.
507 d_chroot (d_chroot.U):
508 This variable conditionally defines the HAS_CHROOT symbol, which
509 indicates to the C program that the chroot() routine is available.
511 d_chsize (d_chsize.U):
512 This variable conditionally defines the CHSIZE symbol, which
513 indicates to the C program that the chsize() routine is available
514 to truncate files. You might need a -lx to get this routine.
517 This variable conditionally defines the HAS_CLASS symbol, which
518 indicates to the C program that the class() routine is available.
520 d_clearenv (d_clearenv.U):
521 This variable conditionally defines the HAS_CLEARENV symbol, which
522 indicates to the C program that the clearenv () routine is available.
524 d_closedir (d_closedir.U):
525 This variable conditionally defines HAS_CLOSEDIR if closedir() is
528 d_cmsghdr_s (d_cmsghdr_s.U):
529 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
530 which indicates that the struct cmsghdr is supported.
533 This variable conditionally defines the HASCONST symbol, which
534 indicates to the C program that this C compiler knows about the
537 d_copysignl (d_copysignl.U):
538 This variable conditionally defines the HAS_COPYSIGNL symbol, which
539 indicates to the C program that the copysignl() routine is available.
540 If aintl is also present we can emulate modfl.
542 d_cplusplus (d_cplusplus.U):
543 This variable conditionally defines the USE_CPLUSPLUS symbol, which
544 indicates that a C++ compiler was used to compiled Perl and will be
545 used to compile extensions.
548 This variable conditionally defines the CRYPT symbol, which
549 indicates to the C program that the crypt() routine is available
550 to encrypt passwords and the like.
552 d_crypt_r (d_crypt_r.U):
553 This variable conditionally defines the HAS_CRYPT_R symbol,
554 which indicates to the C program that the crypt_r()
555 routine is available.
558 This variable conditionally defines the CSH symbol, which
559 indicates to the C program that the C-shell exists.
561 d_ctermid_r (d_ctermid_r.U):
562 This variable conditionally defines the HAS_CTERMID_R symbol,
563 which indicates to the C program that the ctermid_r()
564 routine is available.
566 d_ctime_r (d_ctime_r.U):
567 This variable conditionally defines the HAS_CTIME_R symbol,
568 which indicates to the C program that the ctime_r()
569 routine is available.
571 d_cuserid (d_cuserid.U):
572 This variable conditionally defines the HAS_CUSERID symbol, which
573 indicates to the C program that the cuserid() routine is available
574 to get character login names.
576 d_dbl_dig (d_dbl_dig.U):
577 This variable conditionally defines d_dbl_dig if this system's
578 header files provide DBL_DIG, which is the number of significant
579 digits in a double precision number.
581 d_dbminitproto (d_dbminitproto.U):
582 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
583 which indicates to the C program that the system provides
584 a prototype for the dbminit() function. Otherwise, it is
585 up to the program to supply one.
587 d_difftime (d_difftime.U):
588 This variable conditionally defines the HAS_DIFFTIME symbol, which
589 indicates to the C program that the difftime() routine is available.
592 This variable conditionally defines the HAS_DIRFD constant,
593 which indicates to the C program that dirfd() is available
594 to return the file descriptor of a directory stream.
596 d_dirnamlen (i_dirent.U):
597 This variable conditionally defines DIRNAMLEN, which indicates
598 to the C program that the length of directory entry names is
599 provided by a d_namelen field.
601 d_dlerror (d_dlerror.U):
602 This variable conditionally defines the HAS_DLERROR symbol, which
603 indicates to the C program that the dlerror() routine is available.
605 d_dlopen (d_dlopen.U):
606 This variable conditionally defines the HAS_DLOPEN symbol, which
607 indicates to the C program that the dlopen() routine is available.
609 d_dlsymun (d_dlsymun.U):
610 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
611 indicates that we need to prepend an underscore to the symbol
612 name before calling dlsym().
614 d_dosuid (d_dosuid.U):
615 This variable conditionally defines the symbol DOSUID, which
616 tells the C program that it should insert setuid emulation code
617 on hosts which have setuid #! scripts disabled.
619 d_drand48_r (d_drand48_r.U):
620 This variable conditionally defines the HAS_DRAND48_R symbol,
621 which indicates to the C program that the drand48_r()
622 routine is available.
624 d_drand48proto (d_drand48proto.U):
625 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
626 which indicates to the C program that the system provides
627 a prototype for the drand48() function. Otherwise, it is
628 up to the program to supply one.
631 This variable conditionally defines HAS_DUP2 if dup2() is
632 available to duplicate file descriptors.
634 d_eaccess (d_eaccess.U):
635 This variable conditionally defines the HAS_EACCESS symbol, which
636 indicates to the C program that the eaccess() routine is available.
638 d_endgrent (d_endgrent.U):
639 This variable conditionally defines the HAS_ENDGRENT symbol, which
640 indicates to the C program that the endgrent() routine is available
641 for sequential access of the group database.
643 d_endgrent_r (d_endgrent_r.U):
644 This variable conditionally defines the HAS_ENDGRENT_R symbol,
645 which indicates to the C program that the endgrent_r()
646 routine is available.
648 d_endhent (d_endhent.U):
649 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
650 available to close whatever was being used for host queries.
652 d_endhostent_r (d_endhostent_r.U):
653 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
654 which indicates to the C program that the endhostent_r()
655 routine is available.
657 d_endnent (d_endnent.U):
658 This variable conditionally defines HAS_ENDNETENT if endnetent() is
659 available to close whatever was being used for network queries.
661 d_endnetent_r (d_endnetent_r.U):
662 This variable conditionally defines the HAS_ENDNETENT_R symbol,
663 which indicates to the C program that the endnetent_r()
664 routine is available.
666 d_endpent (d_endpent.U):
667 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
668 available to close whatever was being used for protocol queries.
670 d_endprotoent_r (d_endprotoent_r.U):
671 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
672 which indicates to the C program that the endprotoent_r()
673 routine is available.
675 d_endpwent (d_endpwent.U):
676 This variable conditionally defines the HAS_ENDPWENT symbol, which
677 indicates to the C program that the endpwent() routine is available
678 for sequential access of the passwd database.
680 d_endpwent_r (d_endpwent_r.U):
681 This variable conditionally defines the HAS_ENDPWENT_R symbol,
682 which indicates to the C program that the endpwent_r()
683 routine is available.
685 d_endsent (d_endsent.U):
686 This variable conditionally defines HAS_ENDSERVENT if endservent() is
687 available to close whatever was being used for service queries.
689 d_endservent_r (d_endservent_r.U):
690 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
691 which indicates to the C program that the endservent_r()
692 routine is available.
694 d_eofnblk (nblock_io.U):
695 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
696 when reading from a non-blocking I/O source.
699 This variable conditionally defines the symbols EUNICE and VAX, which
700 alerts the C program that it must deal with ideosyncracies of VMS.
702 d_faststdio (d_faststdio.U):
703 This variable conditionally defines the HAS_FAST_STDIO symbol,
704 which indicates to the C program that the "fast stdio" is available
705 to manipulate the stdio buffers directly.
707 d_fchdir (d_fchdir.U):
708 This variable conditionally defines the HAS_FCHDIR symbol, which
709 indicates to the C program that the fchdir() routine is available.
711 d_fchmod (d_fchmod.U):
712 This variable conditionally defines the HAS_FCHMOD symbol, which
713 indicates to the C program that the fchmod() routine is available
714 to change mode of opened files.
716 d_fchown (d_fchown.U):
717 This variable conditionally defines the HAS_FCHOWN symbol, which
718 indicates to the C program that the fchown() routine is available
719 to change ownership of opened files.
722 This variable conditionally defines the HAS_FCNTL symbol, and indicates
723 whether the fcntl() function exists
725 d_fcntl_can_lock (d_fcntl_can_lock.U):
726 This variable conditionally defines the FCNTL_CAN_LOCK symbol
727 and indicates whether file locking with fcntl() works.
729 d_fd_macros (d_fd_set.U):
730 This variable contains the eventual value of the HAS_FD_MACROS symbol,
731 which indicates if your C compiler knows about the macros which
732 manipulate an fd_set.
734 d_fd_set (d_fd_set.U):
735 This variable contains the eventual value of the HAS_FD_SET symbol,
736 which indicates if your C compiler knows about the fd_set typedef.
738 d_fds_bits (d_fd_set.U):
739 This variable contains the eventual value of the HAS_FDS_BITS symbol,
740 which indicates if your fd_set typedef contains the fds_bits member.
741 If you have an fd_set typedef, but the dweebs who installed it did
742 a half-fast job and neglected to provide the macros to manipulate
743 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
745 d_fgetpos (d_fgetpos.U):
746 This variable conditionally defines HAS_FGETPOS if fgetpos() is
747 available to get the file position indicator.
749 d_finite (d_finite.U):
750 This variable conditionally defines the HAS_FINITE symbol, which
751 indicates to the C program that the finite() routine is available.
753 d_finitel (d_finitel.U):
754 This variable conditionally defines the HAS_FINITEL symbol, which
755 indicates to the C program that the finitel() routine is available.
757 d_flexfnam (d_flexfnam.U):
758 This variable conditionally defines the FLEXFILENAMES symbol, which
759 indicates that the system supports filenames longer than 14 characters.
762 This variable conditionally defines HAS_FLOCK if flock() is
763 available to do file locking.
765 d_flockproto (d_flockproto.U):
766 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
767 which indicates to the C program that the system provides
768 a prototype for the flock() function. Otherwise, it is
769 up to the program to supply one.
772 This variable conditionally defines the HAS_FORK symbol, which
773 indicates to the C program that the fork() routine is available.
775 d_fp_class (d_fp_class.U):
776 This variable conditionally defines the HAS_FP_CLASS symbol, which
777 indicates to the C program that the fp_class() routine is available.
779 d_fpathconf (d_pathconf.U):
780 This variable conditionally defines the HAS_FPATHCONF symbol, which
781 indicates to the C program that the pathconf() routine is available
782 to determine file-system related limits and options associated
783 with a given open file descriptor.
785 d_fpclass (d_fpclass.U):
786 This variable conditionally defines the HAS_FPCLASS symbol, which
787 indicates to the C program that the fpclass() routine is available.
789 d_fpclassify (d_fpclassify.U):
790 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
791 indicates to the C program that the fpclassify() routine is available.
793 d_fpclassl (d_fpclassl.U):
794 This variable conditionally defines the HAS_FPCLASSL symbol, which
795 indicates to the C program that the fpclassl() routine is available.
797 d_fpos64_t (d_fpos64_t.U):
798 This symbol will be defined if the C compiler supports fpos64_t.
800 d_frexpl (d_frexpl.U):
801 This variable conditionally defines the HAS_FREXPL symbol, which
802 indicates to the C program that the frexpl() routine is available.
804 d_fs_data_s (d_fs_data_s.U):
805 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
806 which indicates that the struct fs_data is supported.
808 d_fseeko (d_fseeko.U):
809 This variable conditionally defines the HAS_FSEEKO symbol, which
810 indicates to the C program that the fseeko() routine is available.
812 d_fsetpos (d_fsetpos.U):
813 This variable conditionally defines HAS_FSETPOS if fsetpos() is
814 available to set the file position indicator.
816 d_fstatfs (d_fstatfs.U):
817 This variable conditionally defines the HAS_FSTATFS symbol, which
818 indicates to the C program that the fstatfs() routine is available.
820 d_fstatvfs (d_statvfs.U):
821 This variable conditionally defines the HAS_FSTATVFS symbol, which
822 indicates to the C program that the fstatvfs() routine is available.
825 This variable conditionally defines the HAS_FSYNC symbol, which
826 indicates to the C program that the fsync() routine is available.
828 d_ftello (d_ftello.U):
829 This variable conditionally defines the HAS_FTELLO symbol, which
830 indicates to the C program that the ftello() routine is available.
833 This variable conditionally defines the HAS_FTIME symbol, which indicates
834 that the ftime() routine exists. The ftime() routine is basically
835 a sub-second accuracy clock.
837 d_futimes (d_futimes.U):
838 This variable conditionally defines the HAS_FUTIMES symbol, which
839 indicates to the C program that the futimes() routine is available.
841 d_Gconvert (d_gconvert.U):
842 This variable holds what Gconvert is defined as to convert
843 floating point numbers into strings. By default, Configure
844 sets this macro to use the first of gconvert, gcvt, or sprintf
845 that pass sprintf-%g-like behaviour tests. If perl is using
846 long doubles, the macro uses the first of the following
847 functions that pass Configure's tests: qgcvt, sprintf (if
848 Configure knows how to make sprintf format long doubles--see
849 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
850 The gconvert_preference and gconvert_ld_preference variables
851 can be used to alter Configure's preferences, for doubles and
852 long doubles, respectively. If present, they contain a
853 space-separated list of one or more of the above function
854 names in the order they should be tried.
856 d_Gconvert may be set to override Configure with a platform-
857 specific function. If this function expects a double, a
858 different value may need to be set by the uselongdouble.cbu
859 call-back unit so that long doubles can be formatted without
862 d_getcwd (d_getcwd.U):
863 This variable conditionally defines the HAS_GETCWD symbol, which
864 indicates to the C program that the getcwd() routine is available
865 to get the current working directory.
867 d_getespwnam (d_getespwnam.U):
868 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
869 available to retrieve enchanced (shadow) password entries by name.
871 d_getfsstat (d_getfsstat.U):
872 This variable conditionally defines the HAS_GETFSSTAT symbol, which
873 indicates to the C program that the getfsstat() routine is available.
875 d_getgrent (d_getgrent.U):
876 This variable conditionally defines the HAS_GETGRENT symbol, which
877 indicates to the C program that the getgrent() routine is available
878 for sequential access of the group database.
880 d_getgrent_r (d_getgrent_r.U):
881 This variable conditionally defines the HAS_GETGRENT_R symbol,
882 which indicates to the C program that the getgrent_r()
883 routine is available.
885 d_getgrgid_r (d_getgrgid_r.U):
886 This variable conditionally defines the HAS_GETGRGID_R symbol,
887 which indicates to the C program that the getgrgid_r()
888 routine is available.
890 d_getgrnam_r (d_getgrnam_r.U):
891 This variable conditionally defines the HAS_GETGRNAM_R symbol,
892 which indicates to the C program that the getgrnam_r()
893 routine is available.
895 d_getgrps (d_getgrps.U):
896 This variable conditionally defines the HAS_GETGROUPS symbol, which
897 indicates to the C program that the getgroups() routine is available
898 to get the list of process groups.
900 d_gethbyaddr (d_gethbyad.U):
901 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
902 indicates to the C program that the gethostbyaddr() routine is available
903 to look up hosts by their IP addresses.
905 d_gethbyname (d_gethbynm.U):
906 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
907 indicates to the C program that the gethostbyname() routine is available
908 to look up host names in some data base or other.
910 d_gethent (d_gethent.U):
911 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
912 available to look up host names in some data base or another.
914 d_gethname (d_gethname.U):
915 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
916 indicates to the C program that the gethostname() routine may be
917 used to derive the host name.
919 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
920 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
921 which indicates to the C program that the gethostbyaddr_r()
922 routine is available.
924 d_gethostbyname_r (d_gethostbyname_r.U):
925 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
926 which indicates to the C program that the gethostbyname_r()
927 routine is available.
929 d_gethostent_r (d_gethostent_r.U):
930 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
931 which indicates to the C program that the gethostent_r()
932 routine is available.
934 d_gethostprotos (d_gethostprotos.U):
935 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
936 which indicates to the C program that <netdb.h> supplies
937 prototypes for the various gethost*() functions.
938 See also netdbtype.U for probing for various netdb types.
940 d_getitimer (d_getitimer.U):
941 This variable conditionally defines the HAS_GETITIMER symbol, which
942 indicates to the C program that the getitimer() routine is available.
944 d_getlogin (d_getlogin.U):
945 This variable conditionally defines the HAS_GETLOGIN symbol, which
946 indicates to the C program that the getlogin() routine is available
947 to get the login name.
949 d_getlogin_r (d_getlogin_r.U):
950 This variable conditionally defines the HAS_GETLOGIN_R symbol,
951 which indicates to the C program that the getlogin_r()
952 routine is available.
954 d_getmnt (d_getmnt.U):
955 This variable conditionally defines the HAS_GETMNT symbol, which
956 indicates to the C program that the getmnt() routine is available
957 to retrieve one or more mount info blocks by filename.
959 d_getmntent (d_getmntent.U):
960 This variable conditionally defines the HAS_GETMNTENT symbol, which
961 indicates to the C program that the getmntent() routine is available
962 to iterate through mounted files to get their mount info.
964 d_getnbyaddr (d_getnbyad.U):
965 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
966 indicates to the C program that the getnetbyaddr() routine is available
967 to look up networks by their IP addresses.
969 d_getnbyname (d_getnbynm.U):
970 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
971 indicates to the C program that the getnetbyname() routine is available
972 to look up networks by their names.
974 d_getnent (d_getnent.U):
975 This variable conditionally defines HAS_GETNETENT if getnetent() is
976 available to look up network names in some data base or another.
978 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
979 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
980 which indicates to the C program that the getnetbyaddr_r()
981 routine is available.
983 d_getnetbyname_r (d_getnetbyname_r.U):
984 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
985 which indicates to the C program that the getnetbyname_r()
986 routine is available.
988 d_getnetent_r (d_getnetent_r.U):
989 This variable conditionally defines the HAS_GETNETENT_R symbol,
990 which indicates to the C program that the getnetent_r()
991 routine is available.
993 d_getnetprotos (d_getnetprotos.U):
994 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
995 which indicates to the C program that <netdb.h> supplies
996 prototypes for the various getnet*() functions.
997 See also netdbtype.U for probing for various netdb types.
999 d_getpagsz (d_getpagsz.U):
1000 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1001 is available to get the system page size.
1003 d_getpbyname (d_getprotby.U):
1004 This variable conditionally defines the HAS_GETPROTOBYNAME
1005 symbol, which indicates to the C program that the
1006 getprotobyname() routine is available to look up protocols
1009 d_getpbynumber (d_getprotby.U):
1010 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1011 symbol, which indicates to the C program that the
1012 getprotobynumber() routine is available to look up protocols
1015 d_getpent (d_getpent.U):
1016 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1017 available to look up protocols in some data base or another.
1019 d_getpgid (d_getpgid.U):
1020 This variable conditionally defines the HAS_GETPGID symbol, which
1021 indicates to the C program that the getpgid(pid) function
1022 is available to get the process group id.
1024 d_getpgrp (d_getpgrp.U):
1025 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1026 available to get the current process group.
1028 d_getpgrp2 (d_getpgrp2.U):
1029 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1030 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1031 is available to get the current process group.
1033 d_getppid (d_getppid.U):
1034 This variable conditionally defines the HAS_GETPPID symbol, which
1035 indicates to the C program that the getppid() routine is available
1036 to get the parent process ID.
1038 d_getprior (d_getprior.U):
1039 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1040 is available to get a process's priority.
1042 d_getprotobyname_r (d_getprotobyname_r.U):
1043 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1044 which indicates to the C program that the getprotobyname_r()
1045 routine is available.
1047 d_getprotobynumber_r (d_getprotobynumber_r.U):
1048 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1049 which indicates to the C program that the getprotobynumber_r()
1050 routine is available.
1052 d_getprotoent_r (d_getprotoent_r.U):
1053 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1054 which indicates to the C program that the getprotoent_r()
1055 routine is available.
1057 d_getprotoprotos (d_getprotoprotos.U):
1058 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1059 which indicates to the C program that <netdb.h> supplies
1060 prototypes for the various getproto*() functions.
1061 See also netdbtype.U for probing for various netdb types.
1063 d_getprpwnam (d_getprpwnam.U):
1064 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1065 available to retrieve protected (shadow) password entries by name.
1067 d_getpwent (d_getpwent.U):
1068 This variable conditionally defines the HAS_GETPWENT symbol, which
1069 indicates to the C program that the getpwent() routine is available
1070 for sequential access of the passwd database.
1072 d_getpwent_r (d_getpwent_r.U):
1073 This variable conditionally defines the HAS_GETPWENT_R symbol,
1074 which indicates to the C program that the getpwent_r()
1075 routine is available.
1077 d_getpwnam_r (d_getpwnam_r.U):
1078 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1079 which indicates to the C program that the getpwnam_r()
1080 routine is available.
1082 d_getpwuid_r (d_getpwuid_r.U):
1083 This variable conditionally defines the HAS_GETPWUID_R symbol,
1084 which indicates to the C program that the getpwuid_r()
1085 routine is available.
1087 d_getsbyname (d_getsrvby.U):
1088 This variable conditionally defines the HAS_GETSERVBYNAME
1089 symbol, which indicates to the C program that the
1090 getservbyname() routine is available to look up services
1093 d_getsbyport (d_getsrvby.U):
1094 This variable conditionally defines the HAS_GETSERVBYPORT
1095 symbol, which indicates to the C program that the
1096 getservbyport() routine is available to look up services
1099 d_getsent (d_getsent.U):
1100 This variable conditionally defines HAS_GETSERVENT if getservent() is
1101 available to look up network services in some data base or another.
1103 d_getservbyname_r (d_getservbyname_r.U):
1104 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1105 which indicates to the C program that the getservbyname_r()
1106 routine is available.
1108 d_getservbyport_r (d_getservbyport_r.U):
1109 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1110 which indicates to the C program that the getservbyport_r()
1111 routine is available.
1113 d_getservent_r (d_getservent_r.U):
1114 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1115 which indicates to the C program that the getservent_r()
1116 routine is available.
1118 d_getservprotos (d_getservprotos.U):
1119 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1120 which indicates to the C program that <netdb.h> supplies
1121 prototypes for the various getserv*() functions.
1122 See also netdbtype.U for probing for various netdb types.
1124 d_getspnam (d_getspnam.U):
1125 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1126 available to retrieve SysV shadow password entries by name.
1128 d_getspnam_r (d_getspnam_r.U):
1129 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1130 which indicates to the C program that the getspnam_r()
1131 routine is available.
1133 d_gettimeod (d_ftime.U):
1134 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1135 indicates that the gettimeofday() system call exists (to obtain a
1136 sub-second accuracy clock). You should probably include <sys/resource.h>.
1138 d_gmtime_r (d_gmtime_r.U):
1139 This variable conditionally defines the HAS_GMTIME_R symbol,
1140 which indicates to the C program that the gmtime_r()
1141 routine is available.
1143 d_gnulibc (d_gnulibc.U):
1144 Defined if we're dealing with the GNU C Library.
1146 d_grpasswd (i_grp.U):
1147 This variable conditionally defines GRPASSWD, which indicates
1148 that struct group in <grp.h> contains gr_passwd.
1150 d_hasmntopt (d_hasmntopt.U):
1151 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1152 indicates to the C program that the hasmntopt() routine is available
1153 to query the mount options of file systems.
1155 d_htonl (d_htonl.U):
1156 This variable conditionally defines HAS_HTONL if htonl() and its
1157 friends are available to do network order byte swapping.
1159 d_ilogbl (d_ilogbl.U):
1160 This variable conditionally defines the HAS_ILOGBL symbol, which
1161 indicates to the C program that the ilogbl() routine is available.
1162 If scalbnl is also present we can emulate frexpl.
1164 d_inc_version_list (inc_version_list.U):
1165 This variable conditionally defines PERL_INC_VERSION_LIST.
1166 It is set to undef when PERL_INC_VERSION_LIST is empty.
1168 d_index (d_strchr.U):
1169 This variable conditionally defines HAS_INDEX if index() and
1170 rindex() are available for string searching.
1172 d_inetaton (d_inetaton.U):
1173 This variable conditionally defines the HAS_INET_ATON symbol, which
1174 indicates to the C program that the inet_aton() function is available
1175 to parse IP address "dotted-quad" strings.
1177 d_int64_t (d_int64_t.U):
1178 This symbol will be defined if the C compiler supports int64_t.
1180 d_isascii (d_isascii.U):
1181 This variable conditionally defines the HAS_ISASCII constant,
1182 which indicates to the C program that isascii() is available.
1184 d_isfinite (d_isfinite.U):
1185 This variable conditionally defines the HAS_ISFINITE symbol, which
1186 indicates to the C program that the isfinite() routine is available.
1188 d_isinf (d_isinf.U):
1189 This variable conditionally defines the HAS_ISINF symbol, which
1190 indicates to the C program that the isinf() routine is available.
1192 d_isnan (d_isnan.U):
1193 This variable conditionally defines the HAS_ISNAN symbol, which
1194 indicates to the C program that the isnan() routine is available.
1196 d_isnanl (d_isnanl.U):
1197 This variable conditionally defines the HAS_ISNANL symbol, which
1198 indicates to the C program that the isnanl() routine is available.
1200 d_killpg (d_killpg.U):
1201 This variable conditionally defines the HAS_KILLPG symbol, which
1202 indicates to the C program that the killpg() routine is available
1203 to kill process groups.
1205 d_lchown (d_lchown.U):
1206 This variable conditionally defines the HAS_LCHOWN symbol, which
1207 indicates to the C program that the lchown() routine is available
1208 to operate on a symbolic link (instead of following the link).
1210 d_ldbl_dig (d_ldbl_dig.U):
1211 This variable conditionally defines d_ldbl_dig if this system's
1212 header files provide LDBL_DIG, which is the number of significant
1213 digits in a long double precision number.
1215 d_libm_lib_version (d_libm_lib_version.U):
1216 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1217 which indicates to the C program that math.h defines _LIB_VERSION
1218 being available in libm
1221 This variable conditionally defines HAS_LINK if link() is
1222 available to create hard links.
1224 d_localtime_r (d_localtime_r.U):
1225 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1226 which indicates to the C program that the localtime_r()
1227 routine is available.
1229 d_localtime_r_needs_tzset (d_localtime_r.U):
1230 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1231 symbol, which makes us call tzset before localtime_r()
1233 d_locconv (d_locconv.U):
1234 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1235 available for numeric and monetary formatting conventions.
1237 d_lockf (d_lockf.U):
1238 This variable conditionally defines HAS_LOCKF if lockf() is
1239 available to do file locking.
1241 d_longdbl (d_longdbl.U):
1242 This variable conditionally defines HAS_LONG_DOUBLE if
1243 the long double type is supported.
1245 d_longlong (d_longlong.U):
1246 This variable conditionally defines HAS_LONG_LONG if
1247 the long long type is supported.
1249 d_lseekproto (d_lseekproto.U):
1250 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1251 which indicates to the C program that the system provides
1252 a prototype for the lseek() function. Otherwise, it is
1253 up to the program to supply one.
1255 d_lstat (d_lstat.U):
1256 This variable conditionally defines HAS_LSTAT if lstat() is
1257 available to do file stats on symbolic links.
1259 d_madvise (d_madvise.U):
1260 This variable conditionally defines HAS_MADVISE if madvise() is
1261 available to map a file into memory.
1263 d_malloc_good_size (d_malloc_size.U):
1264 This symbol, if defined, indicates that the malloc_good_size
1265 routine is available for use.
1267 d_malloc_size (d_malloc_size.U):
1268 This symbol, if defined, indicates that the malloc_size
1269 routine is available for use.
1271 d_mblen (d_mblen.U):
1272 This variable conditionally defines the HAS_MBLEN symbol, which
1273 indicates to the C program that the mblen() routine is available
1274 to find the number of bytes in a multibye character.
1276 d_mbstowcs (d_mbstowcs.U):
1277 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1278 indicates to the C program that the mbstowcs() routine is available
1279 to convert a multibyte string into a wide character string.
1281 d_mbtowc (d_mbtowc.U):
1282 This variable conditionally defines the HAS_MBTOWC symbol, which
1283 indicates to the C program that the mbtowc() routine is available
1284 to convert multibyte to a wide character.
1286 d_memchr (d_memchr.U):
1287 This variable conditionally defines the HAS_MEMCHR symbol, which
1288 indicates to the C program that the memchr() routine is available
1289 to locate characters within a C string.
1291 d_memcmp (d_memcmp.U):
1292 This variable conditionally defines the HAS_MEMCMP symbol, which
1293 indicates to the C program that the memcmp() routine is available
1294 to compare blocks of memory.
1296 d_memcpy (d_memcpy.U):
1297 This variable conditionally defines the HAS_MEMCPY symbol, which
1298 indicates to the C program that the memcpy() routine is available
1299 to copy blocks of memory.
1301 d_memmove (d_memmove.U):
1302 This variable conditionally defines the HAS_MEMMOVE symbol, which
1303 indicates to the C program that the memmove() routine is available
1304 to copy potentatially overlapping blocks of memory.
1306 d_memset (d_memset.U):
1307 This variable conditionally defines the HAS_MEMSET symbol, which
1308 indicates to the C program that the memset() routine is available
1309 to set blocks of memory.
1311 d_mkdir (d_mkdir.U):
1312 This variable conditionally defines the HAS_MKDIR symbol, which
1313 indicates to the C program that the mkdir() routine is available
1314 to create directories..
1316 d_mkdtemp (d_mkdtemp.U):
1317 This variable conditionally defines the HAS_MKDTEMP symbol, which
1318 indicates to the C program that the mkdtemp() routine is available
1319 to exclusively create a uniquely named temporary directory.
1321 d_mkfifo (d_mkfifo.U):
1322 This variable conditionally defines the HAS_MKFIFO symbol, which
1323 indicates to the C program that the mkfifo() routine is available.
1325 d_mkstemp (d_mkstemp.U):
1326 This variable conditionally defines the HAS_MKSTEMP symbol, which
1327 indicates to the C program that the mkstemp() routine is available
1328 to exclusively create and open a uniquely named temporary file.
1330 d_mkstemps (d_mkstemps.U):
1331 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1332 indicates to the C program that the mkstemps() routine is available
1333 to exclusively create and open a uniquely named (with a suffix)
1336 d_mktime (d_mktime.U):
1337 This variable conditionally defines the HAS_MKTIME symbol, which
1338 indicates to the C program that the mktime() routine is available.
1341 This variable conditionally defines HAS_MMAP if mmap() is
1342 available to map a file into memory.
1344 d_modfl (d_modfl.U):
1345 This variable conditionally defines the HAS_MODFL symbol, which
1346 indicates to the C program that the modfl() routine is available.
1348 d_modfl_pow32_bug (d_modfl.U):
1349 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1350 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1351 For example from 4294967303.150000 one would get 4294967302.000000
1352 and 1.150000. The bug has been seen in certain versions of glibc,
1353 release 2.2.2 is known to be okay.
1355 d_modflproto (d_modfl.U):
1356 This symbol, if defined, indicates that the system provides
1357 a prototype for the modfl() function. Otherwise, it is up
1358 to the program to supply one. C99 says it should be
1359 long double modfl(long double, long double *);
1361 d_mprotect (d_mprotect.U):
1362 This variable conditionally defines HAS_MPROTECT if mprotect() is
1363 available to modify the access protection of a memory mapped file.
1366 This variable conditionally defines the HAS_MSG symbol, which
1367 indicates that the entire msg*(2) library is present.
1369 d_msg_ctrunc (d_socket.U):
1370 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1371 which indicates that the MSG_CTRUNC is available. #ifdef is
1372 not enough because it may be an enum, glibc has been known to do this.
1374 d_msg_dontroute (d_socket.U):
1375 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1376 which indicates that the MSG_DONTROUTE is available. #ifdef is
1377 not enough because it may be an enum, glibc has been known to do this.
1379 d_msg_oob (d_socket.U):
1380 This variable conditionally defines the HAS_MSG_OOB symbol,
1381 which indicates that the MSG_OOB is available. #ifdef is
1382 not enough because it may be an enum, glibc has been known to do this.
1384 d_msg_peek (d_socket.U):
1385 This variable conditionally defines the HAS_MSG_PEEK symbol,
1386 which indicates that the MSG_PEEK is available. #ifdef is
1387 not enough because it may be an enum, glibc has been known to do this.
1389 d_msg_proxy (d_socket.U):
1390 This variable conditionally defines the HAS_MSG_PROXY symbol,
1391 which indicates that the MSG_PROXY is available. #ifdef is
1392 not enough because it may be an enum, glibc has been known to do this.
1394 d_msgctl (d_msgctl.U):
1395 This variable conditionally defines the HAS_MSGCTL symbol, which
1396 indicates to the C program that the msgctl() routine is available.
1398 d_msgget (d_msgget.U):
1399 This variable conditionally defines the HAS_MSGGET symbol, which
1400 indicates to the C program that the msgget() routine is available.
1402 d_msghdr_s (d_msghdr_s.U):
1403 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1404 which indicates that the struct msghdr is supported.
1406 d_msgrcv (d_msgrcv.U):
1407 This variable conditionally defines the HAS_MSGRCV symbol, which
1408 indicates to the C program that the msgrcv() routine is available.
1410 d_msgsnd (d_msgsnd.U):
1411 This variable conditionally defines the HAS_MSGSND symbol, which
1412 indicates to the C program that the msgsnd() routine is available.
1414 d_msync (d_msync.U):
1415 This variable conditionally defines HAS_MSYNC if msync() is
1416 available to synchronize a mapped file.
1418 d_munmap (d_munmap.U):
1419 This variable conditionally defines HAS_MUNMAP if munmap() is
1420 available to unmap a region mapped by mmap().
1422 d_mymalloc (mallocsrc.U):
1423 This variable conditionally defines MYMALLOC in case other parts
1424 of the source want to take special action if MYMALLOC is used.
1425 This may include different sorts of profiling or error detection.
1428 This variable conditionally defines the HAS_NICE symbol, which
1429 indicates to the C program that the nice() routine is available.
1431 d_nl_langinfo (d_nl_langinfo.U):
1432 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1433 indicates to the C program that the nl_langinfo() routine is available.
1435 d_nv_preserves_uv (perlxv.U):
1436 This variable indicates whether a variable of type nvtype
1437 can preserve all the bits a variable of type uvtype.
1439 d_nv_zero_is_allbits_zero (perlxv.U):
1440 This variable indicates whether a variable of type nvtype
1441 stores 0.0 in memory as all bits zero.
1443 d_off64_t (d_off64_t.U):
1444 This symbol will be defined if the C compiler supports off64_t.
1446 d_old_pthread_create_joinable (d_pthrattrj.U):
1447 This variable conditionally defines pthread_create_joinable.
1448 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1450 d_oldpthreads (usethreads.U):
1451 This variable conditionally defines the OLD_PTHREADS_API symbol,
1452 and indicates that Perl should be built to use the old
1453 draft POSIX threads API. This is only potentially meaningful if
1456 d_oldsock (d_socket.U):
1457 This variable conditionally defines the OLDSOCKET symbol, which
1458 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1460 d_open3 (d_open3.U):
1461 This variable conditionally defines the HAS_OPEN3 manifest constant,
1462 which indicates to the C program that the 3 argument version of
1463 the open(2) function is available.
1465 d_pathconf (d_pathconf.U):
1466 This variable conditionally defines the HAS_PATHCONF symbol, which
1467 indicates to the C program that the pathconf() routine is available
1468 to determine file-system related limits and options associated
1469 with a given filename.
1471 d_pause (d_pause.U):
1472 This variable conditionally defines the HAS_PAUSE symbol, which
1473 indicates to the C program that the pause() routine is available
1474 to suspend a process until a signal is received.
1476 d_perl_otherlibdirs (otherlibdirs.U):
1477 This variable conditionally defines PERL_OTHERLIBDIRS, which
1478 contains a colon-separated set of paths for the perl binary to
1479 include in @INC. See also otherlibdirs.
1481 d_phostname (d_gethname.U):
1482 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1483 contains the shell command which, when fed to popen(), may be
1484 used to derive the host name.
1487 This variable conditionally defines the HAS_PIPE symbol, which
1488 indicates to the C program that the pipe() routine is available
1489 to create an inter-process channel.
1492 This variable conditionally defines the HAS_POLL symbol, which
1493 indicates to the C program that the poll() routine is available
1494 to poll active file descriptors.
1496 d_portable (d_portable.U):
1497 This variable conditionally defines the PORTABLE symbol, which
1498 indicates to the C program that it should not assume that it is
1499 running on the machine it was compiled on.
1501 d_PRId64 (quadfio.U):
1502 This variable conditionally defines the PERL_PRId64 symbol, which
1503 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1505 d_PRIeldbl (longdblfio.U):
1506 This variable conditionally defines the PERL_PRIfldbl symbol, which
1507 indiciates that stdio has a symbol to print long doubles.
1509 d_PRIEUldbl (longdblfio.U):
1510 This variable conditionally defines the PERL_PRIfldbl symbol, which
1511 indiciates that stdio has a symbol to print long doubles.
1512 The 'U' in the name is to separate this from d_PRIeldbl so that even
1513 case-blind systems can see the difference.
1515 d_PRIfldbl (longdblfio.U):
1516 This variable conditionally defines the PERL_PRIfldbl symbol, which
1517 indiciates that stdio has a symbol to print long doubles.
1519 d_PRIFUldbl (longdblfio.U):
1520 This variable conditionally defines the PERL_PRIfldbl symbol, which
1521 indiciates that stdio has a symbol to print long doubles.
1522 The 'U' in the name is to separate this from d_PRIfldbl so that even
1523 case-blind systems can see the difference.
1525 d_PRIgldbl (longdblfio.U):
1526 This variable conditionally defines the PERL_PRIfldbl symbol, which
1527 indiciates that stdio has a symbol to print long doubles.
1529 d_PRIGUldbl (longdblfio.U):
1530 This variable conditionally defines the PERL_PRIfldbl symbol, which
1531 indiciates that stdio has a symbol to print long doubles.
1532 The 'U' in the name is to separate this from d_PRIgldbl so that even
1533 case-blind systems can see the difference.
1535 d_PRIi64 (quadfio.U):
1536 This variable conditionally defines the PERL_PRIi64 symbol, which
1537 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1539 d_PRIo64 (quadfio.U):
1540 This variable conditionally defines the PERL_PRIo64 symbol, which
1541 indiciates that stdio has a symbol to print 64-bit octal numbers.
1543 d_PRIu64 (quadfio.U):
1544 This variable conditionally defines the PERL_PRIu64 symbol, which
1545 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1548 d_PRIx64 (quadfio.U):
1549 This variable conditionally defines the PERL_PRIx64 symbol, which
1550 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1552 d_PRIXU64 (quadfio.U):
1553 This variable conditionally defines the PERL_PRIXU64 symbol, which
1554 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1555 The 'U' in the name is to separate this from d_PRIx64 so that even
1556 case-blind systems can see the difference.
1558 d_procselfexe (d_procselfexe.U):
1559 Defined if $procselfexe is symlink to the absolute
1560 pathname of the executing program.
1562 d_pthread_atfork (d_pthread_atfork.U):
1563 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1564 which indicates to the C program that the pthread_atfork()
1565 routine is available.
1567 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1568 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1569 pthread_attr_setscope() is available to set the contention scope
1570 attribute of a thread attribute object.
1572 d_pthread_yield (d_pthread_y.U):
1573 This variable conditionally defines the HAS_PTHREAD_YIELD
1574 symbol if the pthread_yield routine is available to yield
1575 the execution of the current thread.
1578 This variable conditionally defines PWAGE, which indicates
1579 that struct passwd contains pw_age.
1581 d_pwchange (i_pwd.U):
1582 This variable conditionally defines PWCHANGE, which indicates
1583 that struct passwd contains pw_change.
1585 d_pwclass (i_pwd.U):
1586 This variable conditionally defines PWCLASS, which indicates
1587 that struct passwd contains pw_class.
1589 d_pwcomment (i_pwd.U):
1590 This variable conditionally defines PWCOMMENT, which indicates
1591 that struct passwd contains pw_comment.
1593 d_pwexpire (i_pwd.U):
1594 This variable conditionally defines PWEXPIRE, which indicates
1595 that struct passwd contains pw_expire.
1597 d_pwgecos (i_pwd.U):
1598 This variable conditionally defines PWGECOS, which indicates
1599 that struct passwd contains pw_gecos.
1601 d_pwpasswd (i_pwd.U):
1602 This variable conditionally defines PWPASSWD, which indicates
1603 that struct passwd contains pw_passwd.
1605 d_pwquota (i_pwd.U):
1606 This variable conditionally defines PWQUOTA, which indicates
1607 that struct passwd contains pw_quota.
1609 d_qgcvt (d_qgcvt.U):
1610 This variable conditionally defines the HAS_QGCVT symbol, which
1611 indicates to the C program that the qgcvt() routine is available.
1613 d_quad (quadtype.U):
1614 This variable, if defined, tells that there's a 64-bit integer type,
1617 d_random_r (d_random_r.U):
1618 This variable conditionally defines the HAS_RANDOM_R symbol,
1619 which indicates to the C program that the random_r()
1620 routine is available.
1622 d_readdir (d_readdir.U):
1623 This variable conditionally defines HAS_READDIR if readdir() is
1624 available to read directory entries.
1626 d_readdir64_r (d_readdir64_r.U):
1627 This variable conditionally defines the HAS_READDIR64_R symbol,
1628 which indicates to the C program that the readdir64_r()
1629 routine is available.
1631 d_readdir_r (d_readdir_r.U):
1632 This variable conditionally defines the HAS_READDIR_R symbol,
1633 which indicates to the C program that the readdir_r()
1634 routine is available.
1636 d_readlink (d_readlink.U):
1637 This variable conditionally defines the HAS_READLINK symbol, which
1638 indicates to the C program that the readlink() routine is available
1639 to read the value of a symbolic link.
1641 d_readv (d_readv.U):
1642 This variable conditionally defines the HAS_READV symbol, which
1643 indicates to the C program that the readv() routine is available.
1645 d_recvmsg (d_recvmsg.U):
1646 This variable conditionally defines the HAS_RECVMSG symbol, which
1647 indicates to the C program that the recvmsg() routine is available.
1649 d_rename (d_rename.U):
1650 This variable conditionally defines the HAS_RENAME symbol, which
1651 indicates to the C program that the rename() routine is available
1654 d_rewinddir (d_readdir.U):
1655 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1658 d_rmdir (d_rmdir.U):
1659 This variable conditionally defines HAS_RMDIR if rmdir() is
1660 available to remove directories.
1662 d_safebcpy (d_safebcpy.U):
1663 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1664 the bcopy() routine can do overlapping copies. Normally, you
1665 should probably use memmove().
1667 d_safemcpy (d_safemcpy.U):
1668 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1669 the memcpy() routine can do overlapping copies.
1670 For overlapping copies, memmove() should be used, if available.
1672 d_sanemcmp (d_sanemcmp.U):
1673 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1674 the memcpy() routine is available and can be used to compare relative
1675 magnitudes of chars with their high bits set.
1677 d_sbrkproto (d_sbrkproto.U):
1678 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1679 which indicates to the C program that the system provides
1680 a prototype for the sbrk() function. Otherwise, it is
1681 up to the program to supply one.
1683 d_scalbnl (d_scalbnl.U):
1684 This variable conditionally defines the HAS_SCALBNL symbol, which
1685 indicates to the C program that the scalbnl() routine is available.
1686 If ilogbl is also present we can emulate frexpl.
1688 d_sched_yield (d_pthread_y.U):
1689 This variable conditionally defines the HAS_SCHED_YIELD
1690 symbol if the sched_yield routine is available to yield
1691 the execution of the current thread.
1693 d_scm_rights (d_socket.U):
1694 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1695 which indicates that the SCM_RIGHTS is available. #ifdef is
1696 not enough because it may be an enum, glibc has been known to do this.
1698 d_SCNfldbl (longdblfio.U):
1699 This variable conditionally defines the PERL_PRIfldbl symbol, which
1700 indiciates that stdio has a symbol to scan long doubles.
1702 d_seekdir (d_readdir.U):
1703 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1706 d_select (d_select.U):
1707 This variable conditionally defines HAS_SELECT if select() is
1708 available to select active file descriptors. A <sys/time.h>
1709 inclusion may be necessary for the timeout field.
1712 This variable conditionally defines the HAS_SEM symbol, which
1713 indicates that the entire sem*(2) library is present.
1715 d_semctl (d_semctl.U):
1716 This variable conditionally defines the HAS_SEMCTL symbol, which
1717 indicates to the C program that the semctl() routine is available.
1719 d_semctl_semid_ds (d_union_semun.U):
1720 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1721 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1723 d_semctl_semun (d_union_semun.U):
1724 This variable conditionally defines USE_SEMCTL_SEMUN, which
1725 indicates that union semun is to be used for semctl IPC_STAT.
1727 d_semget (d_semget.U):
1728 This variable conditionally defines the HAS_SEMGET symbol, which
1729 indicates to the C program that the semget() routine is available.
1731 d_semop (d_semop.U):
1732 This variable conditionally defines the HAS_SEMOP symbol, which
1733 indicates to the C program that the semop() routine is available.
1735 d_sendmsg (d_sendmsg.U):
1736 This variable conditionally defines the HAS_SENDMSG symbol, which
1737 indicates to the C program that the sendmsg() routine is available.
1739 d_setegid (d_setegid.U):
1740 This variable conditionally defines the HAS_SETEGID symbol, which
1741 indicates to the C program that the setegid() routine is available
1742 to change the effective gid of the current program.
1744 d_seteuid (d_seteuid.U):
1745 This variable conditionally defines the HAS_SETEUID symbol, which
1746 indicates to the C program that the seteuid() routine is available
1747 to change the effective uid of the current program.
1749 d_setgrent (d_setgrent.U):
1750 This variable conditionally defines the HAS_SETGRENT symbol, which
1751 indicates to the C program that the setgrent() routine is available
1752 for initializing sequential access to the group database.
1754 d_setgrent_r (d_setgrent_r.U):
1755 This variable conditionally defines the HAS_SETGRENT_R symbol,
1756 which indicates to the C program that the setgrent_r()
1757 routine is available.
1759 d_setgrps (d_setgrps.U):
1760 This variable conditionally defines the HAS_SETGROUPS symbol, which
1761 indicates to the C program that the setgroups() routine is available
1762 to set the list of process groups.
1764 d_sethent (d_sethent.U):
1765 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1768 d_sethostent_r (d_sethostent_r.U):
1769 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1770 which indicates to the C program that the sethostent_r()
1771 routine is available.
1773 d_setitimer (d_setitimer.U):
1774 This variable conditionally defines the HAS_SETITIMER symbol, which
1775 indicates to the C program that the setitimer() routine is available.
1777 d_setlinebuf (d_setlnbuf.U):
1778 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1779 indicates to the C program that the setlinebuf() routine is available
1780 to change stderr or stdout from block-buffered or unbuffered to a
1783 d_setlocale (d_setlocale.U):
1784 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1785 available to handle locale-specific ctype implementations.
1787 d_setlocale_r (d_setlocale_r.U):
1788 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1789 which indicates to the C program that the setlocale_r()
1790 routine is available.
1792 d_setnent (d_setnent.U):
1793 This variable conditionally defines HAS_SETNETENT if setnetent() is
1796 d_setnetent_r (d_setnetent_r.U):
1797 This variable conditionally defines the HAS_SETNETENT_R symbol,
1798 which indicates to the C program that the setnetent_r()
1799 routine is available.
1801 d_setpent (d_setpent.U):
1802 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1805 d_setpgid (d_setpgid.U):
1806 This variable conditionally defines the HAS_SETPGID symbol if the
1807 setpgid(pid, gpid) function is available to set process group ID.
1809 d_setpgrp (d_setpgrp.U):
1810 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1811 available to set the current process group.
1813 d_setpgrp2 (d_setpgrp2.U):
1814 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1815 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1816 is available to set the current process group.
1818 d_setprior (d_setprior.U):
1819 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1820 is available to set a process's priority.
1822 d_setproctitle (d_setproctitle.U):
1823 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1824 which indicates to the C program that the setproctitle() routine
1827 d_setprotoent_r (d_setprotoent_r.U):
1828 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1829 which indicates to the C program that the setprotoent_r()
1830 routine is available.
1832 d_setpwent (d_setpwent.U):
1833 This variable conditionally defines the HAS_SETPWENT symbol, which
1834 indicates to the C program that the setpwent() routine is available
1835 for initializing sequential access to the passwd database.
1837 d_setpwent_r (d_setpwent_r.U):
1838 This variable conditionally defines the HAS_SETPWENT_R symbol,
1839 which indicates to the C program that the setpwent_r()
1840 routine is available.
1842 d_setregid (d_setregid.U):
1843 This variable conditionally defines HAS_SETREGID if setregid() is
1844 available to change the real and effective gid of the current
1847 d_setresgid (d_setregid.U):
1848 This variable conditionally defines HAS_SETRESGID if setresgid() is
1849 available to change the real, effective and saved gid of the current
1852 d_setresuid (d_setreuid.U):
1853 This variable conditionally defines HAS_SETREUID if setresuid() is
1854 available to change the real, effective and saved uid of the current
1857 d_setreuid (d_setreuid.U):
1858 This variable conditionally defines HAS_SETREUID if setreuid() is
1859 available to change the real and effective uid of the current
1862 d_setrgid (d_setrgid.U):
1863 This variable conditionally defines the HAS_SETRGID symbol, which
1864 indicates to the C program that the setrgid() routine is available
1865 to change the real gid of the current program.
1867 d_setruid (d_setruid.U):
1868 This variable conditionally defines the HAS_SETRUID symbol, which
1869 indicates to the C program that the setruid() routine is available
1870 to change the real uid of the current program.
1872 d_setsent (d_setsent.U):
1873 This variable conditionally defines HAS_SETSERVENT if setservent() is
1876 d_setservent_r (d_setservent_r.U):
1877 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1878 which indicates to the C program that the setservent_r()
1879 routine is available.
1881 d_setsid (d_setsid.U):
1882 This variable conditionally defines HAS_SETSID if setsid() is
1883 available to set the process group ID.
1885 d_setvbuf (d_setvbuf.U):
1886 This variable conditionally defines the HAS_SETVBUF symbol, which
1887 indicates to the C program that the setvbuf() routine is available
1888 to change buffering on an open stdio stream.
1891 This variable conditionally defines the USE_SFIO symbol,
1892 and indicates whether sfio is available (and should be used).
1895 This variable conditionally defines the HAS_SHM symbol, which
1896 indicates that the entire shm*(2) library is present.
1898 d_shmat (d_shmat.U):
1899 This variable conditionally defines the HAS_SHMAT symbol, which
1900 indicates to the C program that the shmat() routine is available.
1902 d_shmatprototype (d_shmat.U):
1903 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1904 symbol, which indicates that sys/shm.h has a prototype for
1907 d_shmctl (d_shmctl.U):
1908 This variable conditionally defines the HAS_SHMCTL symbol, which
1909 indicates to the C program that the shmctl() routine is available.
1911 d_shmdt (d_shmdt.U):
1912 This variable conditionally defines the HAS_SHMDT symbol, which
1913 indicates to the C program that the shmdt() routine is available.
1915 d_shmget (d_shmget.U):
1916 This variable conditionally defines the HAS_SHMGET symbol, which
1917 indicates to the C program that the shmget() routine is available.
1919 d_sigaction (d_sigaction.U):
1920 This variable conditionally defines the HAS_SIGACTION symbol, which
1921 indicates that the Vr4 sigaction() routine is available.
1923 d_sigprocmask (d_sigprocmask.U):
1924 This variable conditionally defines HAS_SIGPROCMASK
1925 if sigprocmask() is available to examine or change the signal mask
1926 of the calling process.
1928 d_sigsetjmp (d_sigsetjmp.U):
1929 This variable conditionally defines the HAS_SIGSETJMP symbol,
1930 which indicates that the sigsetjmp() routine is available to
1931 call setjmp() and optionally save the process's signal mask.
1933 d_sitearch (sitearch.U):
1934 This variable conditionally defines SITEARCH to hold the pathname
1935 of architecture-dependent library files for $package. If
1936 $sitearch is the same as $archlib, then this is set to undef.
1938 d_snprintf (d_snprintf.U):
1939 This variable conditionally defines the HAS_SNPRINTF symbol, which
1940 indicates to the C program that the snprintf () library function
1943 d_sockatmark (d_sockatmark.U):
1944 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1945 indicates to the C program that the sockatmark() routine is available.
1947 d_sockatmarkproto (d_sockatmarkproto.U):
1948 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1949 which indicates to the C program that the system provides
1950 a prototype for the sockatmark() function. Otherwise, it is
1951 up to the program to supply one.
1953 d_socket (d_socket.U):
1954 This variable conditionally defines HAS_SOCKET, which indicates
1955 that the BSD socket interface is supported.
1957 d_socklen_t (d_socklen_t.U):
1958 This symbol will be defined if the C compiler supports socklen_t.
1960 d_sockpair (d_socket.U):
1961 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1962 indicates that the BSD socketpair() is supported.
1964 d_socks5_init (d_socks5_init.U):
1965 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1966 indicates to the C program that the socks5_init() routine is available.
1968 d_sprintf_returns_strlen (d_sprintf_len.U):
1969 This variable defines whether sprintf returns the length of the string
1970 (as per the ANSI spec). Some C libraries retain compatibility with
1971 pre-ANSI C and return a pointer to the passed in buffer; for these
1972 this variable will be undef.
1974 d_sqrtl (d_sqrtl.U):
1975 This variable conditionally defines the HAS_SQRTL symbol, which
1976 indicates to the C program that the sqrtl() routine is available.
1978 d_srand48_r (d_srand48_r.U):
1979 This variable conditionally defines the HAS_SRAND48_R symbol,
1980 which indicates to the C program that the srand48_r()
1981 routine is available.
1983 d_srandom_r (d_srandom_r.U):
1984 This variable conditionally defines the HAS_SRANDOM_R symbol,
1985 which indicates to the C program that the srandom_r()
1986 routine is available.
1988 d_sresgproto (d_sresgproto.U):
1989 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1990 which indicates to the C program that the system provides
1991 a prototype for the setresgid() function. Otherwise, it is
1992 up to the program to supply one.
1994 d_sresuproto (d_sresuproto.U):
1995 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1996 which indicates to the C program that the system provides
1997 a prototype for the setresuid() function. Otherwise, it is
1998 up to the program to supply one.
2000 d_statblks (d_statblks.U):
2001 This variable conditionally defines USE_STAT_BLOCKS
2002 if this system has a stat structure declaring
2003 st_blksize and st_blocks.
2005 d_statfs_f_flags (d_statfs_f_flags.U):
2006 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2007 symbol, which indicates to struct statfs from has f_flags member.
2008 This kind of struct statfs is coming from sys/mount.h (BSD),
2009 not from sys/statfs.h (SYSV).
2011 d_statfs_s (d_statfs_s.U):
2012 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2013 which indicates that the struct statfs is supported.
2015 d_statvfs (d_statvfs.U):
2016 This variable conditionally defines the HAS_STATVFS symbol, which
2017 indicates to the C program that the statvfs() routine is available.
2019 d_stdio_cnt_lval (d_stdstdio.U):
2020 This variable conditionally defines STDIO_CNT_LVALUE if the
2021 FILE_cnt macro can be used as an lvalue.
2023 d_stdio_ptr_lval (d_stdstdio.U):
2024 This variable conditionally defines STDIO_PTR_LVALUE if the
2025 FILE_ptr macro can be used as an lvalue.
2027 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2028 This symbol is defined if using the FILE_ptr macro as an lvalue
2029 to increase the pointer by n leaves File_cnt(fp) unchanged.
2031 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2032 This symbol is defined if using the FILE_ptr macro as an lvalue
2033 to increase the pointer by n has the side effect of decreasing the
2034 value of File_cnt(fp) by n.
2036 d_stdio_stream_array (stdio_streams.U):
2037 This variable tells whether there is an array holding
2040 d_stdiobase (d_stdstdio.U):
2041 This variable conditionally defines USE_STDIO_BASE if this system
2042 has a FILE structure declaring a usable _base field (or equivalent)
2045 d_stdstdio (d_stdstdio.U):
2046 This variable conditionally defines USE_STDIO_PTR if this system
2047 has a FILE structure declaring usable _ptr and _cnt fields (or
2048 equivalent) in stdio.h.
2050 d_strchr (d_strchr.U):
2051 This variable conditionally defines HAS_STRCHR if strchr() and
2052 strrchr() are available for string searching.
2054 d_strcoll (d_strcoll.U):
2055 This variable conditionally defines HAS_STRCOLL if strcoll() is
2056 available to compare strings using collating information.
2058 d_strctcpy (d_strctcpy.U):
2059 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2060 indicates to the C program that this C compiler knows how to copy
2063 d_strerrm (d_strerror.U):
2064 This variable holds what Strerrr is defined as to translate an error
2065 code condition into an error message string. It could be 'strerror'
2066 or a more complex macro emulating strrror with sys_errlist[], or the
2067 "unknown" string when both strerror and sys_errlist are missing.
2069 d_strerror (d_strerror.U):
2070 This variable conditionally defines HAS_STRERROR if strerror() is
2071 available to translate error numbers to strings.
2073 d_strerror_r (d_strerror_r.U):
2074 This variable conditionally defines the HAS_STRERROR_R symbol,
2075 which indicates to the C program that the strerror_r()
2076 routine is available.
2078 d_strftime (d_strftime.U):
2079 This variable conditionally defines the HAS_STRFTIME symbol, which
2080 indicates to the C program that the strftime() routine is available.
2082 d_strlcat (d_strlcat.U):
2083 This variable conditionally defines the HAS_STRLCAT symbol, which
2084 indicates to the C program that the strlcat () routine is available.
2086 d_strlcpy (d_strlcpy.U):
2087 This variable conditionally defines the HAS_STRLCPY symbol, which
2088 indicates to the C program that the strlcpy () routine is available.
2090 d_strtod (d_strtod.U):
2091 This variable conditionally defines the HAS_STRTOD symbol, which
2092 indicates to the C program that the strtod() routine is available
2093 to provide better numeric string conversion than atof().
2095 d_strtol (d_strtol.U):
2096 This variable conditionally defines the HAS_STRTOL symbol, which
2097 indicates to the C program that the strtol() routine is available
2098 to provide better numeric string conversion than atoi() and friends.
2100 d_strtold (d_strtold.U):
2101 This variable conditionally defines the HAS_STRTOLD symbol, which
2102 indicates to the C program that the strtold() routine is available.
2104 d_strtoll (d_strtoll.U):
2105 This variable conditionally defines the HAS_STRTOLL symbol, which
2106 indicates to the C program that the strtoll() routine is available.
2108 d_strtoq (d_strtoq.U):
2109 This variable conditionally defines the HAS_STRTOQ symbol, which
2110 indicates to the C program that the strtoq() routine is available.
2112 d_strtoul (d_strtoul.U):
2113 This variable conditionally defines the HAS_STRTOUL symbol, which
2114 indicates to the C program that the strtoul() routine is available
2115 to provide conversion of strings to unsigned long.
2117 d_strtoull (d_strtoull.U):
2118 This variable conditionally defines the HAS_STRTOULL symbol, which
2119 indicates to the C program that the strtoull() routine is available.
2121 d_strtouq (d_strtouq.U):
2122 This variable conditionally defines the HAS_STRTOUQ symbol, which
2123 indicates to the C program that the strtouq() routine is available.
2125 d_strxfrm (d_strxfrm.U):
2126 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2127 available to transform strings.
2129 d_suidsafe (d_dosuid.U):
2130 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2131 if setuid scripts can be secure. This test looks in /dev/fd/.
2133 d_symlink (d_symlink.U):
2134 This variable conditionally defines the HAS_SYMLINK symbol, which
2135 indicates to the C program that the symlink() routine is available
2136 to create symbolic links.
2138 d_syscall (d_syscall.U):
2139 This variable conditionally defines HAS_SYSCALL if syscall() is
2140 available call arbitrary system calls.
2142 d_syscallproto (d_syscallproto.U):
2143 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2144 which indicates to the C program that the system provides
2145 a prototype for the syscall() function. Otherwise, it is
2146 up to the program to supply one.
2148 d_sysconf (d_sysconf.U):
2149 This variable conditionally defines the HAS_SYSCONF symbol, which
2150 indicates to the C program that the sysconf() routine is available
2151 to determine system related limits and options.
2153 d_sysernlst (d_strerror.U):
2154 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2155 is available to translate error numbers to the symbolic name.
2157 d_syserrlst (d_strerror.U):
2158 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2159 available to translate error numbers to strings.
2161 d_system (d_system.U):
2162 This variable conditionally defines HAS_SYSTEM if system() is
2163 available to issue a shell command.
2165 d_tcgetpgrp (d_tcgtpgrp.U):
2166 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2167 indicates to the C program that the tcgetpgrp() routine is available.
2168 to get foreground process group ID.
2170 d_tcsetpgrp (d_tcstpgrp.U):
2171 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2172 indicates to the C program that the tcsetpgrp() routine is available
2173 to set foreground process group ID.
2175 d_telldir (d_readdir.U):
2176 This variable conditionally defines HAS_TELLDIR if telldir() is
2179 d_telldirproto (d_telldirproto.U):
2180 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2181 which indicates to the C program that the system provides
2182 a prototype for the telldir() function. Otherwise, it is
2183 up to the program to supply one.
2186 This variable conditionally defines the HAS_TIME symbol, which indicates
2187 that the time() routine exists. The time() routine is normaly
2188 provided on UNIX systems.
2190 d_times (d_times.U):
2191 This variable conditionally defines the HAS_TIMES symbol, which indicates
2192 that the times() routine exists. The times() routine is normaly
2193 provided on UNIX systems. You may have to include <sys/times.h>.
2195 d_tm_tm_gmtoff (i_time.U):
2196 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2197 indicates to the C program that the struct tm has the tm_gmtoff field.
2199 d_tm_tm_zone (i_time.U):
2200 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2201 indicates to the C program that the struct tm has the tm_zone field.
2203 d_tmpnam_r (d_tmpnam_r.U):
2204 This variable conditionally defines the HAS_TMPNAM_R symbol,
2205 which indicates to the C program that the tmpnam_r()
2206 routine is available.
2208 d_truncate (d_truncate.U):
2209 This variable conditionally defines HAS_TRUNCATE if truncate() is
2210 available to truncate files.
2212 d_ttyname_r (d_ttyname_r.U):
2213 This variable conditionally defines the HAS_TTYNAME_R symbol,
2214 which indicates to the C program that the ttyname_r()
2215 routine is available.
2217 d_tzname (d_tzname.U):
2218 This variable conditionally defines HAS_TZNAME if tzname[] is
2219 available to access timezone names.
2221 d_u32align (d_u32align.U):
2222 This variable tells whether you must access character data
2223 through U32-aligned pointers.
2225 d_ualarm (d_ualarm.U):
2226 This variable conditionally defines the HAS_UALARM symbol, which
2227 indicates to the C program that the ualarm() routine is available.
2229 d_umask (d_umask.U):
2230 This variable conditionally defines the HAS_UMASK symbol, which
2231 indicates to the C program that the umask() routine is available.
2232 to set and get the value of the file creation mask.
2234 d_uname (d_gethname.U):
2235 This variable conditionally defines the HAS_UNAME symbol, which
2236 indicates to the C program that the uname() routine may be
2237 used to derive the host name.
2239 d_union_semun (d_union_semun.U):
2240 This variable conditionally defines HAS_UNION_SEMUN if the
2241 union semun is defined by including <sys/sem.h>.
2243 d_unordered (d_unordered.U):
2244 This variable conditionally defines the HAS_UNORDERED symbol, which
2245 indicates to the C program that the unordered() routine is available.
2247 d_unsetenv (d_unsetenv.U):
2248 This variable conditionally defines the HAS_UNSETENV symbol, which
2249 indicates to the C program that the unsetenv () routine is available.
2251 d_usleep (d_usleep.U):
2252 This variable conditionally defines HAS_USLEEP if usleep() is
2253 available to do high granularity sleeps.
2255 d_usleepproto (d_usleepproto.U):
2256 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2257 which indicates to the C program that the system provides
2258 a prototype for the usleep() function. Otherwise, it is
2259 up to the program to supply one.
2261 d_ustat (d_ustat.U):
2262 This variable conditionally defines HAS_USTAT if ustat() is
2263 available to query file system statistics by dev_t.
2265 d_vendorarch (vendorarch.U):
2266 This variable conditionally defined PERL_VENDORARCH.
2268 d_vendorbin (vendorbin.U):
2269 This variable conditionally defines PERL_VENDORBIN.
2271 d_vendorlib (vendorlib.U):
2272 This variable conditionally defines PERL_VENDORLIB.
2274 d_vendorscript (vendorscript.U):
2275 This variable conditionally defines PERL_VENDORSCRIPT.
2277 d_vfork (d_vfork.U):
2278 This variable conditionally defines the HAS_VFORK symbol, which
2279 indicates the vfork() routine is available.
2281 d_void_closedir (d_closedir.U):
2282 This variable conditionally defines VOID_CLOSEDIR if closedir()
2283 does not return a value.
2285 d_voidsig (d_voidsig.U):
2286 This variable conditionally defines VOIDSIG if this system
2287 declares "void (*signal(...))()" in signal.h. The old way was to
2288 declare it as "int (*signal(...))()".
2290 d_voidtty (i_sysioctl.U):
2291 This variable conditionally defines USE_IOCNOTTY to indicate that the
2292 ioctl() call with TIOCNOTTY should be used to void tty association.
2293 Otherwise (on USG probably), it is enough to close the standard file
2294 decriptors and do a setpgrp().
2296 d_volatile (d_volatile.U):
2297 This variable conditionally defines the HASVOLATILE symbol, which
2298 indicates to the C program that this C compiler knows about the
2299 volatile declaration.
2301 d_vprintf (d_vprintf.U):
2302 This variable conditionally defines the HAS_VPRINTF symbol, which
2303 indicates to the C program that the vprintf() routine is available
2304 to printf with a pointer to an argument list.
2306 d_vsnprintf (d_snprintf.U):
2307 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2308 indicates to the C program that the vsnprintf () library function
2311 d_wait4 (d_wait4.U):
2312 This variable conditionally defines the HAS_WAIT4 symbol, which
2313 indicates the wait4() routine is available.
2315 d_waitpid (d_waitpid.U):
2316 This variable conditionally defines HAS_WAITPID if waitpid() is
2317 available to wait for child process.
2319 d_wcstombs (d_wcstombs.U):
2320 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2321 indicates to the C program that the wcstombs() routine is available
2322 to convert wide character strings to multibyte strings.
2324 d_wctomb (d_wctomb.U):
2325 This variable conditionally defines the HAS_WCTOMB symbol, which
2326 indicates to the C program that the wctomb() routine is available
2327 to convert a wide character to a multibyte.
2329 d_writev (d_writev.U):
2330 This variable conditionally defines the HAS_WRITEV symbol, which
2331 indicates to the C program that the writev() routine is available.
2334 This variable conditionally defines the symbol XENIX, which alerts
2335 the C program that it runs under Xenix.
2338 This variable is used internally by Configure to determine the
2339 full pathname (if any) of the date program. After Configure runs,
2340 the value is reset to a plain "date" and is not useful.
2342 db_hashtype (i_db.U):
2343 This variable contains the type of the hash structure element
2344 in the <db.h> header file. In older versions of DB, it was
2345 int, while in newer ones it is u_int32_t.
2347 db_prefixtype (i_db.U):
2348 This variable contains the type of the prefix structure element
2349 in the <db.h> header file. In older versions of DB, it was
2350 int, while in newer ones it is size_t.
2352 db_version_major (i_db.U):
2353 This variable contains the major version number of
2354 Berkeley DB found in the <db.h> header file.
2356 db_version_minor (i_db.U):
2357 This variable contains the minor version number of
2358 Berkeley DB found in the <db.h> header file.
2359 For DB version 1 this is always 0.
2361 db_version_patch (i_db.U):
2362 This variable contains the patch version number of
2363 Berkeley DB found in the <db.h> header file.
2364 For DB version 1 this is always 0.
2366 defvoidused (voidflags.U):
2367 This variable contains the default value of the VOIDUSED symbol (15).
2369 direntrytype (i_dirent.U):
2370 This symbol is set to 'struct direct' or 'struct dirent' depending on
2371 whether dirent is available or not. You should use this pseudo type to
2372 portably declare your directory entries.
2375 This variable contains the extension that is to be used for the
2376 dynamically loaded modules that perl generaties.
2379 This variable contains the name of the dynamic loading file that
2380 will be used with the package.
2382 doublesize (doublesize.U):
2383 This variable contains the value of the DOUBLESIZE symbol, which
2384 indicates to the C program how many bytes there are in a double.
2386 drand01 (randfunc.U):
2387 Indicates the macro to be used to generate normalized
2388 random numbers. Uses randfunc, often divided by
2389 (double) (((unsigned long) 1 << randbits)) in order to
2390 normalize the result.
2391 In C programs, the macro 'Drand01' is mapped to drand01.
2393 drand48_r_proto (d_drand48_r.U):
2394 This variable encodes the prototype of drand48_r.
2395 It is zero if d_drand48_r is undef, and one of the
2396 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2399 dynamic_ext (Extensions.U):
2400 This variable holds a list of XS extension files we want to
2401 link dynamically into the package. It is used by Makefile.
2403 eagain (nblock_io.U):
2404 This variable bears the symbolic errno code set by read() when no
2405 data is present on the file and non-blocking I/O was enabled (otherwise,
2406 read() blocks naturally).
2409 This variable conditionally defines EBCDIC if this
2410 system uses EBCDIC encoding. Among other things, this
2411 means that the character ranges are not contiguous.
2415 This variable is used internally by Configure to determine the
2416 full pathname (if any) of the echo program. After Configure runs,
2417 the value is reset to a plain "echo" and is not useful.
2420 This variable is used internally by Configure to determine the
2421 full pathname (if any) of the egrep program. After Configure runs,
2422 the value is reset to a plain "egrep" and is not useful.
2425 This variable is defined but not used by Configure.
2426 The value is a plain '' and is not useful.
2428 endgrent_r_proto (d_endgrent_r.U):
2429 This variable encodes the prototype of endgrent_r.
2430 It is zero if d_endgrent_r is undef, and one of the
2431 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2434 endhostent_r_proto (d_endhostent_r.U):
2435 This variable encodes the prototype of endhostent_r.
2436 It is zero if d_endhostent_r is undef, and one of the
2437 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2440 endnetent_r_proto (d_endnetent_r.U):
2441 This variable encodes the prototype of endnetent_r.
2442 It is zero if d_endnetent_r is undef, and one of the
2443 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2446 endprotoent_r_proto (d_endprotoent_r.U):
2447 This variable encodes the prototype of endprotoent_r.
2448 It is zero if d_endprotoent_r is undef, and one of the
2449 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2452 endpwent_r_proto (d_endpwent_r.U):
2453 This variable encodes the prototype of endpwent_r.
2454 It is zero if d_endpwent_r is undef, and one of the
2455 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2458 endservent_r_proto (d_endservent_r.U):
2459 This variable encodes the prototype of endservent_r.
2460 It is zero if d_endservent_r is undef, and one of the
2461 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2465 When running under Eunice this variable contains a command which will
2466 convert a shell script to the proper form of text file for it to be
2467 executable by the shell. On other systems it is a no-op.
2470 This is an old synonym for _exe.
2473 This variable is used internally by Configure to determine the
2474 full pathname (if any) of the expr program. After Configure runs,
2475 the value is reset to a plain "expr" and is not useful.
2477 extensions (Extensions.U):
2478 This variable holds a list of all extension files (both XS and
2479 non-xs linked into the package. It is propagated to Config.pm
2480 and is typically used to test whether a particular extesion
2484 This variable holds a list of extra modules to install.
2486 fflushall (fflushall.U):
2487 This symbol, if defined, tells that to flush
2488 all pending stdio output one must loop through all
2489 the stdio file handles stored in an array and fflush them.
2490 Note that if fflushNULL is defined, fflushall will not
2491 even be probed for and will be left undefined.
2493 fflushNULL (fflushall.U):
2494 This symbol, if defined, tells that fflush(NULL) does flush
2495 all pending stdio output.
2498 This variable is defined but not used by Configure.
2499 The value is a plain '' and is not useful.
2501 firstmakefile (Unix.U):
2502 This variable defines the first file searched by make. On unix,
2503 it is makefile (then Makefile). On case-insensitive systems,
2504 it might be something else. This is only used to deal with
2505 convoluted make depend tricks.
2508 This variable is defined but not used by Configure.
2509 The value is a plain '' and is not useful.
2511 fpossize (fpossize.U):
2512 This variable contains the size of a fpostype in bytes.
2514 fpostype (fpostype.U):
2515 This variable defines Fpos_t to be something like fpos_t, long,
2516 uint, or whatever type is used to declare file positions in libc.
2518 freetype (mallocsrc.U):
2519 This variable contains the return type of free(). It is usually
2520 void, but occasionally int.
2523 This variable contains the command used by Configure
2524 to copy files from the target host. Useful and available
2525 only during Perl build.
2526 The string ':' if not cross-compiling.
2529 This variable contains the full pathname to 'ar', whether or
2530 not the user has specified 'portability'. This is only used
2534 This variable contains the full pathname to 'csh', whether or
2535 not the user has specified 'portability'. This is only used
2536 in the compiled C program, and we assume that all systems which
2537 can share this executable will have the same full pathname to
2540 full_sed (Loc_sed.U):
2541 This variable contains the full pathname to 'sed', whether or
2542 not the user has specified 'portability'. This is only used
2543 in the compiled C program, and we assume that all systems which
2544 can share this executable will have the same full pathname to
2547 gccansipedantic (gccvers.U):
2548 If GNU cc (gcc) is used, this variable will enable (if set) the
2549 -ansi and -pedantic ccflags for building core files (through
2550 cflags script). (See Porting/pumpkin.pod for full description).
2552 gccosandvers (gccvers.U):
2553 If GNU cc (gcc) is used, this variable holds the operating system
2554 and version used to compile gcc. It is set to '' if not gcc,
2555 or if nothing useful can be parsed as the os version.
2557 gccversion (gccvers.U):
2558 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2559 indicate whether the compiler is version 1 or 2. This is used in
2560 setting some of the default cflags. It is set to '' if not gcc.
2562 getgrent_r_proto (d_getgrent_r.U):
2563 This variable encodes the prototype of getgrent_r.
2564 It is zero if d_getgrent_r is undef, and one of the
2565 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2568 getgrgid_r_proto (d_getgrgid_r.U):
2569 This variable encodes the prototype of getgrgid_r.
2570 It is zero if d_getgrgid_r is undef, and one of the
2571 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2574 getgrnam_r_proto (d_getgrnam_r.U):
2575 This variable encodes the prototype of getgrnam_r.
2576 It is zero if d_getgrnam_r is undef, and one of the
2577 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2580 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2581 This variable encodes the prototype of gethostbyaddr_r.
2582 It is zero if d_gethostbyaddr_r is undef, and one of the
2583 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2586 gethostbyname_r_proto (d_gethostbyname_r.U):
2587 This variable encodes the prototype of gethostbyname_r.
2588 It is zero if d_gethostbyname_r is undef, and one of the
2589 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2592 gethostent_r_proto (d_gethostent_r.U):
2593 This variable encodes the prototype of gethostent_r.
2594 It is zero if d_gethostent_r is undef, and one of the
2595 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2598 getlogin_r_proto (d_getlogin_r.U):
2599 This variable encodes the prototype of getlogin_r.
2600 It is zero if d_getlogin_r is undef, and one of the
2601 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2604 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2605 This variable encodes the prototype of getnetbyaddr_r.
2606 It is zero if d_getnetbyaddr_r is undef, and one of the
2607 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2610 getnetbyname_r_proto (d_getnetbyname_r.U):
2611 This variable encodes the prototype of getnetbyname_r.
2612 It is zero if d_getnetbyname_r is undef, and one of the
2613 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2616 getnetent_r_proto (d_getnetent_r.U):
2617 This variable encodes the prototype of getnetent_r.
2618 It is zero if d_getnetent_r is undef, and one of the
2619 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2622 getprotobyname_r_proto (d_getprotobyname_r.U):
2623 This variable encodes the prototype of getprotobyname_r.
2624 It is zero if d_getprotobyname_r is undef, and one of the
2625 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2628 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2629 This variable encodes the prototype of getprotobynumber_r.
2630 It is zero if d_getprotobynumber_r is undef, and one of the
2631 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2634 getprotoent_r_proto (d_getprotoent_r.U):
2635 This variable encodes the prototype of getprotoent_r.
2636 It is zero if d_getprotoent_r is undef, and one of the
2637 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2640 getpwent_r_proto (d_getpwent_r.U):
2641 This variable encodes the prototype of getpwent_r.
2642 It is zero if d_getpwent_r is undef, and one of the
2643 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2646 getpwnam_r_proto (d_getpwnam_r.U):
2647 This variable encodes the prototype of getpwnam_r.
2648 It is zero if d_getpwnam_r is undef, and one of the
2649 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2652 getpwuid_r_proto (d_getpwuid_r.U):
2653 This variable encodes the prototype of getpwuid_r.
2654 It is zero if d_getpwuid_r is undef, and one of the
2655 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2658 getservbyname_r_proto (d_getservbyname_r.U):
2659 This variable encodes the prototype of getservbyname_r.
2660 It is zero if d_getservbyname_r is undef, and one of the
2661 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2664 getservbyport_r_proto (d_getservbyport_r.U):
2665 This variable encodes the prototype of getservbyport_r.
2666 It is zero if d_getservbyport_r is undef, and one of the
2667 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2670 getservent_r_proto (d_getservent_r.U):
2671 This variable encodes the prototype of getservent_r.
2672 It is zero if d_getservent_r is undef, and one of the
2673 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2676 getspnam_r_proto (d_getspnam_r.U):
2677 This variable encodes the prototype of getspnam_r.
2678 It is zero if d_getspnam_r is undef, and one of the
2679 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2683 This variable contains the format string used for printing a Gid_t.
2685 gidsign (gidsign.U):
2686 This variable contains the signedness of a gidtype.
2687 1 for unsigned, -1 for signed.
2689 gidsize (gidsize.U):
2690 This variable contains the size of a gidtype in bytes.
2692 gidtype (gidtype.U):
2693 This variable defines Gid_t to be something like gid_t, int,
2694 ushort, or whatever type is used to declare the return type
2695 of getgid(). Typically, it is the type of group ids in the kernel.
2698 This variable holds the general path (space-separated) used to
2699 find libraries. It may contain directories that do not exist on
2700 this platform, libpth is the cleaned-up version.
2703 This variable is used internally by Configure to determine the
2704 full pathname (if any) of the gmake program. After Configure runs,
2705 the value is reset to a plain "gmake" and is not useful.
2707 gmtime_r_proto (d_gmtime_r.U):
2708 This variable encodes the prototype of gmtime_r.
2709 It is zero if d_gmtime_r is undef, and one of the
2710 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2713 gnulibc_version (d_gnulibc.U):
2714 This variable contains the version number of the GNU C library.
2715 It is usually something like '2.2.5'. It is a plain '' if this
2716 is not the GNU C library, or if the version is unknown.
2719 This variable is used internally by Configure to determine the
2720 full pathname (if any) of the grep program. After Configure runs,
2721 the value is reset to a plain "grep" and is not useful.
2724 This variable contains a command that produces the text of the
2725 /etc/group file. This is normally "cat /etc/group", but can be
2726 "ypcat group" when NIS is used.
2727 On some systems, such as os390, there may be no equivalent
2728 command, in which case this variable is unset.
2730 groupstype (groupstype.U):
2731 This variable defines Groups_t to be something like gid_t, int,
2732 ushort, or whatever type is used for the second argument to
2733 getgroups() and setgroups(). Usually, this is the same as
2734 gidtype (gid_t), but sometimes it isn't.
2737 This variable is used internally by Configure to determine the
2738 full pathname (if any) of the gzip program. After Configure runs,
2739 the value is reset to a plain "gzip" and is not useful.
2741 h_fcntl (h_fcntl.U):
2742 This is variable gets set in various places to tell i_fcntl that
2743 <fcntl.h> should be included.
2745 h_sysfile (h_sysfile.U):
2746 This is variable gets set in various places to tell i_sys_file that
2747 <sys/file.h> should be included.
2750 Gives the type of hints used for previous answers. May be one of
2751 "default", "recommended" or "previous".
2754 This variable contains a command that produces the text of the
2755 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2756 "ypcat hosts" when NIS is used.
2757 On some systems, such as os390, there may be no equivalent
2758 command, in which case this variable is unset.
2760 html1dir (html1dir.U):
2761 This variable contains the name of the directory in which html
2762 source pages are to be put. This directory is for pages
2763 that describe whole programs, not libraries or modules. It
2764 is intended to correspond roughly to section 1 of the Unix
2767 html1direxp (html1dir.U):
2768 This variable is the same as the html1dir variable, but is filename
2769 expanded at configuration time, for convenient use in makefiles.
2771 html3dir (html3dir.U):
2772 This variable contains the name of the directory in which html
2773 source pages are to be put. This directory is for pages
2774 that describe libraries or modules. It is intended to
2775 correspond roughly to section 3 of the Unix manuals.
2777 html3direxp (html3dir.U):
2778 This variable is the same as the html3dir variable, but is filename
2779 expanded at configuration time, for convenient use in makefiles.
2782 This variable is the size of an I16 in bytes.
2785 This variable contains the C type used for Perl's I16.
2788 This variable is the size of an I32 in bytes.
2791 This variable contains the C type used for Perl's I32.
2794 This variable is the size of an I64 in bytes.
2797 This variable contains the C type used for Perl's I64.
2800 This variable is the size of an I8 in bytes.
2803 This variable contains the C type used for Perl's I8.
2805 i_arpainet (i_arpainet.U):
2806 This variable conditionally defines the I_ARPA_INET symbol,
2807 and indicates whether a C program should include <arpa/inet.h>.
2809 i_bsdioctl (i_sysioctl.U):
2810 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2811 indicates to the C program that <sys/bsdioctl.h> exists and should
2814 i_crypt (i_crypt.U):
2815 This variable conditionally defines the I_CRYPT symbol, and indicates
2816 whether a C program should include <crypt.h>.
2819 This variable conditionally defines the I_DB symbol, and indicates
2820 whether a C program may include Berkeley's DB include file <db.h>.
2823 This variable conditionally defines the I_DBM symbol, which
2824 indicates to the C program that <dbm.h> exists and should
2827 i_dirent (i_dirent.U):
2828 This variable conditionally defines I_DIRENT, which indicates
2829 to the C program that it should include <dirent.h>.
2832 This variable conditionally defines the I_DLD symbol, which
2833 indicates to the C program that <dld.h> (GNU dynamic loading)
2834 exists and should be included.
2836 i_dlfcn (i_dlfcn.U):
2837 This variable conditionally defines the I_DLFCN symbol, which
2838 indicates to the C program that <dlfcn.h> exists and should
2841 i_fcntl (i_fcntl.U):
2842 This variable controls the value of I_FCNTL (which tells
2843 the C program to include <fcntl.h>).
2845 i_float (i_float.U):
2846 This variable conditionally defines the I_FLOAT symbol, and indicates
2847 whether a C program may include <float.h> to get symbols like DBL_MAX
2848 or DBL_MIN, i.e. machine dependent floating point values.
2851 This variable conditionally defines the I_FP symbol, and indicates
2852 whether a C program should include <fp.h>.
2854 i_fp_class (i_fp_class.U):
2855 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2856 whether a C program should include <fp_class.h>.
2859 This variable conditionally defines the I_GDBM symbol, which
2860 indicates to the C program that <gdbm.h> exists and should
2864 This variable conditionally defines the I_GRP symbol, and indicates
2865 whether a C program should include <grp.h>.
2867 i_ieeefp (i_ieeefp.U):
2868 This variable conditionally defines the I_IEEEFP symbol, and indicates
2869 whether a C program should include <ieeefp.h>.
2871 i_inttypes (i_inttypes.U):
2872 This variable conditionally defines the I_INTTYPES symbol,
2873 and indicates whether a C program should include <inttypes.h>.
2875 i_langinfo (i_langinfo.U):
2876 This variable conditionally defines the I_LANGINFO symbol,
2877 and indicates whether a C program should include <langinfo.h>.
2879 i_libutil (i_libutil.U):
2880 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2881 whether a C program should include <libutil.h>.
2883 i_limits (i_limits.U):
2884 This variable conditionally defines the I_LIMITS symbol, and indicates
2885 whether a C program may include <limits.h> to get symbols like WORD_BIT
2888 i_locale (i_locale.U):
2889 This variable conditionally defines the I_LOCALE symbol,
2890 and indicates whether a C program should include <locale.h>.
2892 i_machcthr (i_machcthr.U):
2893 This variable conditionally defines the I_MACH_CTHREADS symbol,
2894 and indicates whether a C program should include <mach/cthreads.h>.
2896 i_malloc (i_malloc.U):
2897 This variable conditionally defines the I_MALLOC symbol, and indicates
2898 whether a C program should include <malloc.h>.
2901 This variable conditionally defines the I_MATH symbol, and indicates
2902 whether a C program may include <math.h>.
2904 i_memory (i_memory.U):
2905 This variable conditionally defines the I_MEMORY symbol, and indicates
2906 whether a C program should include <memory.h>.
2908 i_mntent (i_mntent.U):
2909 This variable conditionally defines the I_MNTENT symbol, and indicates
2910 whether a C program should include <mntent.h>.
2913 This variable conditionally defines the I_NDBM symbol, which
2914 indicates to the C program that <ndbm.h> exists and should
2917 i_netdb (i_netdb.U):
2918 This variable conditionally defines the I_NETDB symbol, and indicates
2919 whether a C program should include <netdb.h>.
2921 i_neterrno (i_neterrno.U):
2922 This variable conditionally defines the I_NET_ERRNO symbol, which
2923 indicates to the C program that <net/errno.h> exists and should
2926 i_netinettcp (i_netinettcp.U):
2927 This variable conditionally defines the I_NETINET_TCP symbol,
2928 and indicates whether a C program should include <netinet/tcp.h>.
2931 This variable conditionally defines I_NETINET_IN, which indicates
2932 to the C program that it should include <netinet/in.h>. Otherwise,
2933 you may try <sys/in.h>.
2936 This variable conditionally defines the I_POLL symbol, and indicates
2937 whether a C program should include <poll.h>.
2940 This variable conditionally defines the I_PROT symbol, and indicates
2941 whether a C program should include <prot.h>.
2943 i_pthread (i_pthread.U):
2944 This variable conditionally defines the I_PTHREAD symbol,
2945 and indicates whether a C program should include <pthread.h>.
2948 This variable conditionally defines I_PWD, which indicates
2949 to the C program that it should include <pwd.h>.
2951 i_rpcsvcdbm (i_dbm.U):
2952 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2953 indicates to the C program that <rpcsvc/dbm.h> exists and should
2954 be included. Some System V systems might need this instead of <dbm.h>.
2957 This variable conditionally defines the I_SFIO symbol,
2958 and indicates whether a C program should include <sfio.h>.
2960 i_sgtty (i_termio.U):
2961 This variable conditionally defines the I_SGTTY symbol, which
2962 indicates to the C program that it should include <sgtty.h> rather
2965 i_shadow (i_shadow.U):
2966 This variable conditionally defines the I_SHADOW symbol, and indicates
2967 whether a C program should include <shadow.h>.
2969 i_socks (i_socks.U):
2970 This variable conditionally defines the I_SOCKS symbol, and indicates
2971 whether a C program should include <socks.h>.
2973 i_stdarg (i_varhdr.U):
2974 This variable conditionally defines the I_STDARG symbol, which
2975 indicates to the C program that <stdarg.h> exists and should
2978 i_stddef (i_stddef.U):
2979 This variable conditionally defines the I_STDDEF symbol, which
2980 indicates to the C program that <stddef.h> exists and should
2983 i_stdlib (i_stdlib.U):
2984 This variable conditionally defines the I_STDLIB symbol, which
2985 indicates to the C program that <stdlib.h> exists and should
2988 i_string (i_string.U):
2989 This variable conditionally defines the I_STRING symbol, which
2990 indicates that <string.h> should be included rather than <strings.h>.
2992 i_sunmath (i_sunmath.U):
2993 This variable conditionally defines the I_SUNMATH symbol, and indicates
2994 whether a C program should include <sunmath.h>.
2996 i_sysaccess (i_sysaccess.U):
2997 This variable conditionally defines the I_SYS_ACCESS symbol,
2998 and indicates whether a C program should include <sys/access.h>.
3000 i_sysdir (i_sysdir.U):
3001 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3002 whether a C program should include <sys/dir.h>.
3004 i_sysfile (i_sysfile.U):
3005 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3006 whether a C program should include <sys/file.h> to get R_OK and friends.
3008 i_sysfilio (i_sysioctl.U):
3009 This variable conditionally defines the I_SYS_FILIO symbol, which
3010 indicates to the C program that <sys/filio.h> exists and should
3011 be included in preference to <sys/ioctl.h>.
3014 This variable conditionally defines I_SYS_IN, which indicates
3015 to the C program that it should include <sys/in.h> instead of
3018 i_sysioctl (i_sysioctl.U):
3019 This variable conditionally defines the I_SYS_IOCTL symbol, which
3020 indicates to the C program that <sys/ioctl.h> exists and should
3023 i_syslog (i_syslog.U):
3024 This variable conditionally defines the I_SYSLOG symbol,
3025 and indicates whether a C program should include <syslog.h>.
3027 i_sysmman (i_sysmman.U):
3028 This variable conditionally defines the I_SYS_MMAN symbol, and
3029 indicates whether a C program should include <sys/mman.h>.
3031 i_sysmode (i_sysmode.U):
3032 This variable conditionally defines the I_SYSMODE symbol,
3033 and indicates whether a C program should include <sys/mode.h>.
3035 i_sysmount (i_sysmount.U):
3036 This variable conditionally defines the I_SYSMOUNT symbol,
3037 and indicates whether a C program should include <sys/mount.h>.
3039 i_sysndir (i_sysndir.U):
3040 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3041 whether a C program should include <sys/ndir.h>.
3043 i_sysparam (i_sysparam.U):
3044 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3045 whether a C program should include <sys/param.h>.
3047 i_sysresrc (i_sysresrc.U):
3048 This variable conditionally defines the I_SYS_RESOURCE symbol,
3049 and indicates whether a C program should include <sys/resource.h>.
3051 i_syssecrt (i_syssecrt.U):
3052 This variable conditionally defines the I_SYS_SECURITY symbol,
3053 and indicates whether a C program should include <sys/security.h>.
3055 i_sysselct (i_sysselct.U):
3056 This variable conditionally defines I_SYS_SELECT, which indicates
3057 to the C program that it should include <sys/select.h> in order to
3058 get the definition of struct timeval.
3060 i_syssockio (i_sysioctl.U):
3061 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3062 C program that socket ioctl codes may be found in <sys/sockio.h>
3063 instead of <sys/ioctl.h>.
3065 i_sysstat (i_sysstat.U):
3066 This variable conditionally defines the I_SYS_STAT symbol,
3067 and indicates whether a C program should include <sys/stat.h>.
3069 i_sysstatfs (i_sysstatfs.U):
3070 This variable conditionally defines the I_SYSSTATFS symbol,
3071 and indicates whether a C program should include <sys/statfs.h>.
3073 i_sysstatvfs (i_sysstatvfs.U):
3074 This variable conditionally defines the I_SYSSTATVFS symbol,
3075 and indicates whether a C program should include <sys/statvfs.h>.
3077 i_systime (i_time.U):
3078 This variable conditionally defines I_SYS_TIME, which indicates
3079 to the C program that it should include <sys/time.h>.
3081 i_systimek (i_time.U):
3082 This variable conditionally defines I_SYS_TIME_KERNEL, which
3083 indicates to the C program that it should include <sys/time.h>
3084 with KERNEL defined.
3086 i_systimes (i_systimes.U):
3087 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3088 whether a C program should include <sys/times.h>.
3090 i_systypes (i_systypes.U):
3091 This variable conditionally defines the I_SYS_TYPES symbol,
3092 and indicates whether a C program should include <sys/types.h>.
3094 i_sysuio (i_sysuio.U):
3095 This variable conditionally defines the I_SYSUIO symbol, and indicates
3096 whether a C program should include <sys/uio.h>.
3098 i_sysun (i_sysun.U):
3099 This variable conditionally defines I_SYS_UN, which indicates
3100 to the C program that it should include <sys/un.h> to get UNIX
3101 domain socket definitions.
3103 i_sysutsname (i_sysutsname.U):
3104 This variable conditionally defines the I_SYSUTSNAME symbol,
3105 and indicates whether a C program should include <sys/utsname.h>.
3107 i_sysvfs (i_sysvfs.U):
3108 This variable conditionally defines the I_SYSVFS symbol,
3109 and indicates whether a C program should include <sys/vfs.h>.
3111 i_syswait (i_syswait.U):
3112 This variable conditionally defines I_SYS_WAIT, which indicates
3113 to the C program that it should include <sys/wait.h>.
3115 i_termio (i_termio.U):
3116 This variable conditionally defines the I_TERMIO symbol, which
3117 indicates to the C program that it should include <termio.h> rather
3120 i_termios (i_termio.U):
3121 This variable conditionally defines the I_TERMIOS symbol, which
3122 indicates to the C program that the POSIX <termios.h> file is
3126 This variable conditionally defines I_TIME, which indicates
3127 to the C program that it should include <time.h>.
3129 i_unistd (i_unistd.U):
3130 This variable conditionally defines the I_UNISTD symbol, and indicates
3131 whether a C program should include <unistd.h>.
3133 i_ustat (i_ustat.U):
3134 This variable conditionally defines the I_USTAT symbol, and indicates
3135 whether a C program should include <ustat.h>.
3137 i_utime (i_utime.U):
3138 This variable conditionally defines the I_UTIME symbol, and indicates
3139 whether a C program should include <utime.h>.
3141 i_values (i_values.U):
3142 This variable conditionally defines the I_VALUES symbol, and indicates
3143 whether a C program may include <values.h> to get symbols like MAXLONG
3146 i_varargs (i_varhdr.U):
3147 This variable conditionally defines I_VARARGS, which indicates
3148 to the C program that it should include <varargs.h>.
3150 i_varhdr (i_varhdr.U):
3151 Contains the name of the header to be included to get va_dcl definition.
3152 Typically one of varargs.h or stdarg.h.
3154 i_vfork (i_vfork.U):
3155 This variable conditionally defines the I_VFORK symbol, and indicates
3156 whether a C program should include vfork.h.
3158 ignore_versioned_solibs (libs.U):
3159 This variable should be non-empty if non-versioned shared
3160 libraries (libfoo.so.x.y) are to be ignored (because they
3161 cannot be linked against).
3163 inc_version_list (inc_version_list.U):
3164 This variable specifies the list of subdirectories in over
3165 which perl.c:incpush() and lib/lib.pm will automatically
3166 search when adding directories to @INC. The elements in
3167 the list are separated by spaces. This is only useful
3168 if you have a perl library directory tree structured like the
3169 default one. See INSTALL for how this works. The versioned
3170 site_perl directory was introduced in 5.005, so that is the
3171 lowest possible value.
3173 This list includes architecture-dependent directories back to
3174 version $api_versionstring (e.g. 5.5.640) and
3175 architecture-independent directories all the way back to
3178 inc_version_list_init (inc_version_list.U):
3179 This variable holds the same list as inc_version_list, but
3180 each item is enclosed in double quotes and separated by commas,
3181 suitable for use in the PERL_INC_VERSION_LIST initialization.
3184 This variable must preceed the normal include path to get hte
3185 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3186 Value can be "" or "/bsd43" on mips.
3189 This variable is defined but not used by Configure.
3190 The value is a plain '' and is not useful.
3192 initialinstalllocation (bin.U):
3193 When userelocatableinc is true, this variable holds the location
3194 that make install should copy the perl binary to, with all the
3195 run-time relocatable paths calculated from this at install time.
3196 When used, it is initialised to the original value of binexp, and
3197 then binexp is set to '.../', as the other binaries are found
3198 relative to the perl binary.
3200 installarchlib (archlib.U):
3201 This variable is really the same as archlibexp but may differ on
3202 those systems using AFS. For extra portability, only this variable
3203 should be used in makefiles.
3206 This variable is the same as binexp unless AFS is running in which case
3207 the user is explicitely prompted for it. This variable should always
3208 be used in your makefiles for maximum portability.
3210 installhtml1dir (html1dir.U):
3211 This variable is really the same as html1direxp, unless you are
3212 using a different installprefix. For extra portability, you
3213 should only use this variable within your makefiles.
3215 installhtml3dir (html3dir.U):
3216 This variable is really the same as html3direxp, unless you are
3217 using a different installprefix. For extra portability, you
3218 should only use this variable within your makefiles.
3220 installman1dir (man1dir.U):
3221 This variable is really the same as man1direxp, unless you are using
3222 AFS in which case it points to the read/write location whereas
3223 man1direxp only points to the read-only access location. For extra
3224 portability, you should only use this variable within your makefiles.
3226 installman3dir (man3dir.U):
3227 This variable is really the same as man3direxp, unless you are using
3228 AFS in which case it points to the read/write location whereas
3229 man3direxp only points to the read-only access location. For extra
3230 portability, you should only use this variable within your makefiles.
3232 installprefix (installprefix.U):
3233 This variable holds the name of the directory below which
3234 "make install" will install the package. For most users, this
3235 is the same as prefix. However, it is useful for
3236 installing the software into a different (usually temporary)
3237 location after which it can be bundled up and moved somehow
3238 to the final location specified by prefix.
3240 installprefixexp (installprefix.U):
3241 This variable holds the full absolute path of installprefix
3242 with all ~-expansion done.
3244 installprivlib (privlib.U):
3245 This variable is really the same as privlibexp but may differ on
3246 those systems using AFS. For extra portability, only this variable
3247 should be used in makefiles.
3249 installscript (scriptdir.U):
3250 This variable is usually the same as scriptdirexp, unless you are on
3251 a system running AFS, in which case they may differ slightly. You
3252 should always use this variable within your makefiles for portability.
3254 installsitearch (sitearch.U):
3255 This variable is really the same as sitearchexp but may differ on
3256 those systems using AFS. For extra portability, only this variable
3257 should be used in makefiles.
3259 installsitebin (sitebin.U):
3260 This variable is usually the same as sitebinexp, unless you are on
3261 a system running AFS, in which case they may differ slightly. You
3262 should always use this variable within your makefiles for portability.
3264 installsitehtml1dir (sitehtml1dir.U):
3265 This variable is really the same as sitehtml1direxp, unless you are using
3266 AFS in which case it points to the read/write location whereas
3267 html1direxp only points to the read-only access location. For extra
3268 portability, you should only use this variable within your makefiles.
3270 installsitehtml3dir (sitehtml3dir.U):
3271 This variable is really the same as sitehtml3direxp, unless you are using
3272 AFS in which case it points to the read/write location whereas
3273 html3direxp only points to the read-only access location. For extra
3274 portability, you should only use this variable within your makefiles.
3276 installsitelib (sitelib.U):
3277 This variable is really the same as sitelibexp but may differ on
3278 those systems using AFS. For extra portability, only this variable
3279 should be used in makefiles.
3281 installsiteman1dir (siteman1dir.U):
3282 This variable is really the same as siteman1direxp, unless you are using
3283 AFS in which case it points to the read/write location whereas
3284 man1direxp only points to the read-only access location. For extra
3285 portability, you should only use this variable within your makefiles.
3287 installsiteman3dir (siteman3dir.U):
3288 This variable is really the same as siteman3direxp, unless you are using
3289 AFS in which case it points to the read/write location whereas
3290 man3direxp only points to the read-only access location. For extra
3291 portability, you should only use this variable within your makefiles.
3293 installsitescript (sitescript.U):
3294 This variable is usually the same as sitescriptexp, unless you are on
3295 a system running AFS, in which case they may differ slightly. You
3296 should always use this variable within your makefiles for portability.
3298 installstyle (installstyle.U):
3299 This variable describes the "style" of the perl installation.
3300 This is intended to be useful for tools that need to
3301 manipulate entire perl distributions. Perl itself doesn't use
3302 this to find its libraries -- the library directories are
3303 stored directly in Config.pm. Currently, there are only two
3304 styles: "lib" and "lib/perl5". The default library locations
3305 (e.g. privlib, sitelib) are either $prefix/lib or
3306 $prefix/lib/perl5. The former is useful if $prefix is a
3307 directory dedicated to perl (e.g. /opt/perl), while the latter
3308 is useful if $prefix is shared by many packages, e.g. if
3311 Unfortunately, while this "style" variable is used to set
3312 defaults for all three directory hierarchies (core, vendor, and
3313 site), there is no guarantee that the same style is actually
3314 appropriate for all those directories. For example, $prefix
3315 might be /opt/perl, but $siteprefix might be /usr/local.
3316 (Perhaps, in retrospect, the "lib" style should never have been
3317 supported, but it did seem like a nice idea at the time.)
3319 The situation is even less clear for tools such as MakeMaker
3320 that can be used to install additional modules into
3321 non-standard places. For example, if a user intends to install
3322 a module into a private directory (perhaps by setting PREFIX on
3323 the Makefile.PL command line), then there is no reason to
3324 assume that the Configure-time $installstyle setting will be
3325 relevant for that PREFIX.
3327 This may later be extended to include other information, so
3328 be careful with pattern-matching on the results.
3330 For compatibility with perl5.005 and earlier, the default
3331 setting is based on whether or not $prefix contains the string
3334 installusrbinperl (instubperl.U):
3335 This variable tells whether Perl should be installed also as
3336 /usr/bin/perl in addition to
3339 installvendorarch (vendorarch.U):
3340 This variable is really the same as vendorarchexp but may differ on
3341 those systems using AFS. For extra portability, only this variable
3342 should be used in makefiles.
3344 installvendorbin (vendorbin.U):
3345 This variable is really the same as vendorbinexp but may differ on
3346 those systems using AFS. For extra portability, only this variable
3347 should be used in makefiles.
3349 installvendorhtml1dir (vendorhtml1dir.U):
3350 This variable is really the same as vendorhtml1direxp but may differ on
3351 those systems using AFS. For extra portability, only this variable
3352 should be used in makefiles.
3354 installvendorhtml3dir (vendorhtml3dir.U):
3355 This variable is really the same as vendorhtml3direxp but may differ on
3356 those systems using AFS. For extra portability, only this variable
3357 should be used in makefiles.
3359 installvendorlib (vendorlib.U):
3360 This variable is really the same as vendorlibexp but may differ on
3361 those systems using AFS. For extra portability, only this variable
3362 should be used in makefiles.
3364 installvendorman1dir (vendorman1dir.U):
3365 This variable is really the same as vendorman1direxp but may differ on
3366 those systems using AFS. For extra portability, only this variable
3367 should be used in makefiles.
3369 installvendorman3dir (vendorman3dir.U):
3370 This variable is really the same as vendorman3direxp but may differ on
3371 those systems using AFS. For extra portability, only this variable
3372 should be used in makefiles.
3374 installvendorscript (vendorscript.U):
3375 This variable is really the same as vendorscriptexp but may differ on
3376 those systems using AFS. For extra portability, only this variable
3377 should be used in makefiles.
3379 intsize (intsize.U):
3380 This variable contains the value of the INTSIZE symbol, which
3381 indicates to the C program how many bytes there are in an int.
3383 issymlink (issymlink.U):
3384 This variable holds the test command to test for a symbolic link
3385 (if they are supported). Typical values include 'test -h' and
3388 ivdformat (perlxvf.U):
3389 This variable contains the format string used for printing
3390 a Perl IV as a signed decimal integer.
3393 This variable is the size of an IV in bytes.
3396 This variable contains the C type used for Perl's IV.
3398 known_extensions (Extensions.U):
3399 This variable holds a list of all XS extensions included in
3403 This variable is defined but not used by Configure.
3404 The value is a plain '' and is not useful.
3407 This variable indicates the program to be used to link
3408 libraries for dynamic loading. On some systems, it is 'ld'.
3409 On ELF systems, it should be $cc. Mostly, we'll try to respect
3410 the hint file setting.
3412 lddlflags (dlsrc.U):
3413 This variable contains any special flags that might need to be
3414 passed to $ld to create a shared library suitable for dynamic
3415 loading. It is up to the makefile to use it. For hpux, it
3416 should be '-b'. For sunos 4.1, it is empty.
3418 ldflags (ccflags.U):
3419 This variable contains any additional C loader flags desired by
3420 the user. It is up to the Makefile to use this.
3422 ldflags_uselargefiles (uselfs.U):
3423 This variable contains the loader flags needed by large file builds
3424 and added to ldflags by hints files.
3426 ldlibpthname (libperl.U):
3427 This variable holds the name of the shared library
3428 search path, often LD_LIBRARY_PATH. To get an empty
3429 string, the hints file must set this to 'none'.
3432 This variable is used internally by Configure to determine the
3433 full pathname (if any) of the less program. After Configure runs,
3434 the value is reset to a plain "less" and is not useful.
3437 This is an old synonym for _a.
3440 This variable contains the location of the C library.
3442 libperl (libperl.U):
3443 The perl executable is obtained by linking perlmain.c with
3444 libperl, any static extensions (usually just DynaLoader),
3445 and any other libraries needed on this system. libperl
3446 is usually libperl.a, but can also be libperl.so.xxx if
3447 the user wishes to build a perl executable with a shared
3451 This variable holds the general path (space-separated) used to find
3452 libraries. It is intended to be used by other units.
3455 This variable holds the additional libraries we want to use.
3456 It is up to the Makefile to deal with it. The list can be empty.
3459 This variable holds the directory names aka dirnames of the libraries
3460 we found and accepted, duplicates are removed.
3463 This variable holds the filenames aka basenames of the libraries
3464 we found and accepted.
3467 This variable holds the full pathnames of the libraries
3468 we found and accepted.
3471 This variable holds the directory names probed for libraries.
3473 libswanted (Myinit.U):
3474 This variable holds a list of all the libraries we want to
3475 search. The order is chosen to pick up the c library
3476 ahead of ucb or bsd libraries for SVR4.
3478 libswanted_uselargefiles (uselfs.U):
3479 This variable contains the libraries needed by large file builds
3480 and added to ldflags by hints files. It is a space separated list
3481 of the library names without the "lib" prefix or any suffix, just
3485 This variable is defined but not used by Configure.
3486 The value is a plain '' and is not useful.
3489 This variable is defined but not used by Configure.
3490 The value is a plain '' and is not useful.
3492 lkflags (ccflags.U):
3493 This variable contains any additional C partial linker flags desired by
3494 the user. It is up to the Makefile to use this.
3497 This variable is used internally by Configure to determine the
3498 full pathname (if any) of the ln program. After Configure runs,
3499 the value is reset to a plain "ln" and is not useful.
3502 This variable holds the name of the command to make
3503 symbolic links (if they are supported). It can be used
3504 in the Makefile. It is either 'ln -s' or 'ln'
3506 localtime_r_proto (d_localtime_r.U):
3507 This variable encodes the prototype of localtime_r.
3508 It is zero if d_localtime_r is undef, and one of the
3509 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3512 locincpth (ccflags.U):
3513 This variable contains a list of additional directories to be
3514 searched by the compiler. The appropriate '-I' directives will
3515 be added to ccflags. This is intended to simplify setting
3516 local directories from the Configure command line.
3517 It's not much, but it parallels the loclibpth stuff in libpth.U.
3519 loclibpth (libpth.U):
3520 This variable holds the paths (space-separated) used to find local
3521 libraries. It is prepended to libpth, and is intended to be easily
3522 set from the command line.
3524 longdblsize (d_longdbl.U):
3525 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3526 indicates to the C program how many bytes there are in a long double,
3527 if this system supports long doubles.
3529 longlongsize (d_longlong.U):
3530 This variable contains the value of the LONGLONGSIZE symbol, which
3531 indicates to the C program how many bytes there are in a long long,
3532 if this system supports long long.
3534 longsize (intsize.U):
3535 This variable contains the value of the LONGSIZE symbol, which
3536 indicates to the C program how many bytes there are in a long.
3539 This variable is defined but not used by Configure.
3540 The value is a plain '' and is not useful.
3543 This variable is defined but not used by Configure.
3544 The value is a plain '' and is not useful.
3547 This variable is used internally by Configure to determine the
3548 full pathname (if any) of the ls program. After Configure runs,
3549 the value is reset to a plain "ls" and is not useful.
3551 lseeksize (lseektype.U):
3552 This variable defines lseektype to be something like off_t, long,
3553 or whatever type is used to declare lseek offset's type in the
3554 kernel (which also appears to be lseek's return type).
3556 lseektype (lseektype.U):
3557 This variable defines lseektype to be something like off_t, long,
3558 or whatever type is used to declare lseek offset's type in the
3559 kernel (which also appears to be lseek's return type).
3562 This variable indicates that the Misc Attribute Definition code is to
3566 If the Misc Attribute Decoration is to be compiled, this variable is
3567 set to the name of the extra header files to be used, else it is ''
3570 If the Misc Attribute Decoration is to be compiled, this variable is
3571 set to the name of the extra object files to be used, else it is ''
3574 If the Misc Attribute Decoration is to be compiled, this variable is
3575 set to the name of the extra C source files to be used, else it is ''
3578 This variable is defined but not used by Configure.
3579 The value is a plain '' and is not useful.
3582 This variable is defined but not used by Configure.
3583 The value is a plain '' and is not useful.
3586 This variable is used internally by Configure to determine the
3587 full pathname (if any) of the make program. After Configure runs,
3588 the value is reset to a plain "make" and is not useful.
3590 make_set_make (make.U):
3591 Some versions of 'make' set the variable MAKE. Others do not.
3592 This variable contains the string to be included in Makefile.SH
3593 so that MAKE is set if needed, and not if not needed.
3594 Possible values are:
3596 make_set_make='#' # If your make program handles this for you,
3598 make_set_make="MAKE=$make" # if it doesn't.
3600 This uses a comment character to distinguish a
3601 'set' value (from a previous config.sh or Configure '-D' option)
3602 from an uncomputed value.
3604 mallocobj (mallocsrc.U):
3605 This variable contains the name of the malloc.o that this package
3606 generates, if that malloc.o is preferred over the system malloc.
3607 Otherwise the value is null. This variable is intended for generating
3608 Makefiles. See mallocsrc.
3610 mallocsrc (mallocsrc.U):
3611 This variable contains the name of the malloc.c that comes with
3612 the package, if that malloc.c is preferred over the system malloc.
3613 Otherwise the value is null. This variable is intended for generating
3616 malloctype (mallocsrc.U):
3617 This variable contains the kind of ptr returned by malloc and realloc.
3619 man1dir (man1dir.U):
3620 This variable contains the name of the directory in which manual
3621 source pages are to be put. It is the responsibility of the
3622 Makefile.SH to get the value of this into the proper command.
3623 You must be prepared to do the ~name expansion yourself.
3625 man1direxp (man1dir.U):
3626 This variable is the same as the man1dir variable, but is filename
3627 expanded at configuration time, for convenient use in makefiles.
3629 man1ext (man1dir.U):
3630 This variable contains the extension that the manual page should
3631 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3634 man3dir (man3dir.U):
3635 This variable contains the name of the directory in which manual
3636 source pages are to be put. It is the responsibility of the
3637 Makefile.SH to get the value of this into the proper command.
3638 You must be prepared to do the ~name expansion yourself.
3640 man3direxp (man3dir.U):
3641 This variable is the same as the man3dir variable, but is filename
3642 expanded at configuration time, for convenient use in makefiles.
3644 man3ext (man3dir.U):
3645 This variable contains the extension that the manual page should
3646 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3650 This variable is used internally by Configure to determine the
3651 full pathname (if any) of the Mcc program. After Configure runs,
3652 the value is reset to a plain "Mcc" and is not useful.
3654 mips_type (usrinc.U):
3655 This variable holds the environment type for the mips system.
3656 Possible values are "BSD 4.3" and "System V".
3658 mistrustnm (Csym.U):
3659 This variable can be used to establish a fallthrough for the cases
3660 where nm fails to find a symbol. If usenm is false or usenm is true
3661 and mistrustnm is false, this variable has no effect. If usenm is true
3662 and mistrustnm is "compile", a test program will be compiled to try to
3663 find any symbol that can't be located via nm lookup. If mistrustnm is
3664 "run", the test program will be run as well as being compiled.
3667 This variable is used internally by Configure to determine the
3668 full pathname (if any) of the mkdir program. After Configure runs,
3669 the value is reset to a plain "mkdir" and is not useful.
3671 mmaptype (d_mmap.U):
3672 This symbol contains the type of pointer returned by mmap()
3673 (and simultaneously the type of the first argument).
3674 It can be 'void *' or 'caddr_t'.
3676 modetype (modetype.U):
3677 This variable defines modetype to be something like mode_t,
3678 int, unsigned short, or whatever type is used to declare file
3679 modes for system calls.
3682 This variable is used internally by Configure to determine the
3683 full pathname (if any) of the more program. After Configure runs,
3684 the value is reset to a plain "more" and is not useful.
3686 multiarch (multiarch.U):
3687 This variable conditionally defines the MULTIARCH symbol
3688 which signifies the presence of multiplatform files.
3689 This is normally set by hints files.
3692 This variable is defined but not used by Configure.
3693 The value is a plain '' and is not useful.
3695 myarchname (archname.U):
3696 This variable holds the architecture name computed by Configure in
3697 a previous run. It is not intended to be perused by any user and
3698 should never be set in a hint file.
3700 mydomain (myhostname.U):
3701 This variable contains the eventual value of the MYDOMAIN symbol,
3702 which is the domain of the host the program is going to run on.
3703 The domain must be appended to myhostname to form a complete host name.
3704 The dot comes with mydomain, and need not be supplied by the program.
3706 myhostname (myhostname.U):
3707 This variable contains the eventual value of the MYHOSTNAME symbol,
3708 which is the name of the host the program is going to run on.
3709 The domain is not kept with hostname, but must be gotten from mydomain.
3710 The dot comes with mydomain, and need not be supplied by the program.
3712 myuname (Oldconfig.U):
3713 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3714 pseudo variables assignments in the output are stripped, thank you. The
3715 whole thing is then lower-cased.
3718 This variable contains the '-n' flag if that is what causes the echo
3719 command to suppress newline. Otherwise it is null. Correct usage is
3720 $echo $n "prompt for a question: $c".
3722 need_va_copy (need_va_copy.U):
3723 This symbol, if defined, indicates that the system stores
3724 the variable argument list datatype, va_list, in a format
3725 that cannot be copied by simple assignment, so that some
3726 other means must be used when copying is required.
3727 As such systems vary in their provision (or non-provision)
3728 of copying mechanisms, handy.h defines a platform-
3729 independent macro, Perl_va_copy(src, dst), to do the job.
3731 netdb_hlen_type (netdbtype.U):
3732 This variable holds the type used for the 2nd argument to
3733 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3734 This is only useful if you have gethostbyaddr(), naturally.
3736 netdb_host_type (netdbtype.U):
3737 This variable holds the type used for the 1st argument to
3738 gethostbyaddr(). Usually, this is char * or void *, possibly
3739 with or without a const prefix.
3740 This is only useful if you have gethostbyaddr(), naturally.
3742 netdb_name_type (netdbtype.U):
3743 This variable holds the type used for the argument to
3744 gethostbyname(). Usually, this is char * or const char *.
3745 This is only useful if you have gethostbyname(), naturally.
3747 netdb_net_type (netdbtype.U):
3748 This variable holds the type used for the 1st argument to
3749 getnetbyaddr(). Usually, this is int or long.
3750 This is only useful if you have getnetbyaddr(), naturally.
3753 This variable is used internally by Configure to determine the
3754 full pathname (if any) of the nm program. After Configure runs,
3755 the value is reset to a plain "nm" and is not useful.
3758 This variable holds the options that may be necessary for nm.
3760 nm_so_opt (usenm.U):
3761 This variable holds the options that may be necessary for nm
3762 to work on a shared library but that can not be used on an
3763 archive library. Currently, this is only used by Linux, where
3764 nm --dynamic is *required* to get symbols from an ELF library which
3765 has been stripped, but nm --dynamic is *fatal* on an archive library.
3766 Maybe Linux should just always set usenm=false.
3768 nonxs_ext (Extensions.U):
3769 This variable holds a list of all non-xs extensions included
3770 in the package. All of them will be built.
3773 This variable is used internally by Configure to determine the
3774 full pathname (if any) of the nroff program. After Configure runs,
3775 the value is reset to a plain "nroff" and is not useful.
3777 nv_preserves_uv_bits (perlxv.U):
3778 This variable indicates how many of bits type uvtype
3779 a variable nvtype can preserve.
3781 nveformat (perlxvf.U):
3782 This variable contains the format string used for printing
3783 a Perl NV using %e-ish floating point format.
3785 nvEUformat (perlxvf.U):
3786 This variable contains the format string used for printing
3787 a Perl NV using %E-ish floating point format.
3789 nvfformat (perlxvf.U):
3790 This variable confains the format string used for printing
3791 a Perl NV using %f-ish floating point format.
3793 nvFUformat (perlxvf.U):
3794 This variable confains the format string used for printing
3795 a Perl NV using %F-ish floating point format.
3797 nvgformat (perlxvf.U):
3798 This variable contains the format string used for printing
3799 a Perl NV using %g-ish floating point format.
3801 nvGUformat (perlxvf.U):
3802 This variable contains the format string used for printing
3803 a Perl NV using %G-ish floating point format.
3806 This variable is the size of an NV in bytes.
3809 This variable contains the C type used for Perl's NV.
3811 o_nonblock (nblock_io.U):
3812 This variable bears the symbol value to be used during open() or fcntl()
3813 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3814 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3815 but that is only supported by some devices.
3818 This is an old synonym for _o.
3820 old_pthread_create_joinable (d_pthrattrj.U):
3821 This variable defines the constant to use for creating joinable
3822 (aka undetached) pthreads. Unused if pthread.h defines
3823 PTHREAD_CREATE_JOINABLE. If used, possible values are
3824 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3826 optimize (ccflags.U):
3827 This variable contains any optimizer/debugger flag that should be used.
3828 It is up to the Makefile to use it.
3830 orderlib (orderlib.U):
3831 This variable is "true" if the components of libraries must be ordered
3832 (with `lorder $* | tsort`) before placing them in an archive. Set to
3833 "false" if ranlib or ar can generate random libraries.
3835 osname (Oldconfig.U):
3836 This variable contains the operating system name (e.g. sunos,
3837 solaris, hpux, etc.). It can be useful later on for setting
3838 defaults. Any spaces are replaced with underscores. It is set
3839 to a null string if we can't figure it out.
3841 osvers (Oldconfig.U):
3842 This variable contains the operating system version (e.g.
3843 4.1.3, 5.2, etc.). It is primarily used for helping select
3844 an appropriate hints file, but might be useful elsewhere for
3845 setting defaults. It is set to '' if we can't figure it out.
3846 We try to be flexible about how much of the version number
3847 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3848 same for this package, hints files might just be os_4.0 or
3849 os_4.1, etc., not keeping separate files for each little release.
3851 otherlibdirs (otherlibdirs.U):
3852 This variable contains a colon-separated set of paths for the perl
3853 binary to search for additional library files or modules.
3854 These directories will be tacked to the end of @INC.
3855 Perl will automatically search below each path for version-
3856 and architecture-specific directories. See inc_version_list
3858 A value of ' ' means 'none' and is used to preserve this value
3859 for the next run through Configure.
3861 package (package.U):
3862 This variable contains the name of the package being constructed.
3863 It is primarily intended for the use of later Configure units.
3866 This variable contains the name of the preferred pager on the system.
3867 Usual values are (the full pathnames of) more, less, pg, or cat.
3870 This variable contains a command that produces the text of the
3871 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3872 "ypcat passwd" when NIS is used.
3873 On some systems, such as os390, there may be no equivalent
3874 command, in which case this variable is unset.
3876 patchlevel (patchlevel.U):
3877 The patchlevel level of this package.
3878 The value of patchlevel comes from the patchlevel.h file.
3879 In a version number such as 5.6.1, this is the "6".
3880 In patchlevel.h, this is referred to as "PERL_VERSION".
3883 This is an old synonym for p_ in Head.U, the character
3884 used to separate elements in the command shell search PATH.
3887 This variable is defined but not used by Configure.
3888 The value is a plain '' and is not useful.
3891 This variable contains the full path (if any) to a previously
3892 installed perl5.005 or later suitable for running the script
3893 to determine inc_version_list.
3895 PERL_API_REVISION (patchlevel.h):
3896 This number describes the earliest compatible PERL_REVISION of
3897 Perl ("compatibility" here being defined as sufficient binary/API
3898 compatibility to run XS code built with the older version).
3899 Normally this does not change across maintenance releases.
3900 Please read the comment in patchlevel.h.
3902 PERL_API_SUBVERSION (patchlevel.h):
3903 This number describes the earliest compatible PERL_SUBVERSION of
3904 Perl ("compatibility" here being defined as sufficient binary/API
3905 compatibility to run XS code built with the older version).
3906 Normally this does not change across maintenance releases.
3907 Please read the comment in patchlevel.h.
3909 PERL_API_VERSION (patchlevel.h):
3910 This number describes the earliest compatible PERL_VERSION of
3911 Perl ("compatibility" here being defined as sufficient binary/API
3912 compatibility to run XS code built with the older version).
3913 Normally this does not change across maintenance releases.
3914 Please read the comment in patchlevel.h.
3916 PERL_CONFIG_SH (Oldsyms.U):
3917 This is set to 'true' in config.sh so that a shell script
3918 sourcing config.sh can tell if it has been sourced already.
3920 PERL_PATCHLEVEL (Oldsyms.U):
3921 This symbol reflects the patchlevel, if available. Will usually
3922 come from the .patch file, which is available when the perl
3923 source tree was fetched with rsync.
3925 perl_patchlevel (patchlevel.U):
3926 This is the Perl patch level, a numeric change identifier,
3927 as defined by whichever source code maintenance system
3928 is used to maintain the patches; currently Perforce.
3929 It does not correlate with the Perl version numbers or
3930 the maintenance versus development dichotomy except
3931 by also being increasing.
3933 PERL_REVISION (Oldsyms.U):
3934 In a Perl version number such as 5.6.2, this is the 5.
3935 This value is manually set in patchlevel.h
3937 PERL_SUBVERSION (Oldsyms.U):
3938 In a Perl version number such as 5.6.2, this is the 2.
3939 Values greater than 50 represent potentially unstable
3940 development subversions.
3941 This value is manually set in patchlevel.h
3943 PERL_VERSION (Oldsyms.U):
3944 In a Perl version number such as 5.6.2, this is the 6.
3945 This value is manually set in patchlevel.h
3947 perladmin (perladmin.U):
3948 Electronic mail address of the perl5 administrator.
3951 The list of libraries needed by Perl only (any libraries needed
3952 by extensions only will by dropped, if using dynamic loading).
3954 perlpath (perlpath.U):
3955 This variable contains the eventual value of the PERLPATH symbol,
3956 which contains the name of the perl interpreter to be used in
3957 shell scripts and in the "eval 'exec'" idiom. This variable is
3958 not necessarily the pathname of the file containing the perl
3959 interpreter; you must append the executable extension (_exe) if
3960 it is not already present. Note that Perl code that runs during
3961 the Perl build process cannot reference this variable, as Perl
3962 may not have been installed, or even if installed, may be a
3963 different version of Perl.
3966 This variable is used internally by Configure to determine the
3967 full pathname (if any) of the pg program. After Configure runs,
3968 the value is reset to a plain "pg" and is not useful.
3970 phostname (myhostname.U):
3971 This variable contains the eventual value of the PHOSTNAME symbol,
3972 which is a command that can be fed to popen() to get the host name.
3973 The program should probably not presume that the domain is or isn't
3976 pidtype (pidtype.U):
3977 This variable defines PIDTYPE to be something like pid_t, int,
3978 ushort, or whatever type is used to declare process ids in the kernel.
3981 Holds the private path used by Configure to find out the libraries.
3982 Its value is prepend to libpth. This variable takes care of special
3983 machines, like the mips. Usually, it should be empty.
3986 This variable is defined but not used by Configure.
3987 The value is a plain '' and is not useful.
3990 This variable is defined but not used by Configure.
3991 The value is a plain '' and is not useful.
3994 This variable holds the name of the directory below which the
3995 user will install the package. Usually, this is /usr/local, and
3996 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3997 man pages in /usr/local/man, etc. It is only used to set defaults
3998 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4000 prefixexp (prefix.U):
4001 This variable holds the full absolute path of the directory below
4002 which the user will install the package. Derived from prefix.
4004 privlib (privlib.U):
4005 This variable contains the eventual value of the PRIVLIB symbol,
4006 which is the name of the private library for this package. It may
4007 have a ~ on the front. It is up to the makefile to eventually create
4008 this directory while performing installation (with ~ substitution).
4010 privlibexp (privlib.U):
4011 This variable is the ~name expanded version of privlib, so that you
4012 may use it directly in Makefiles or shell scripts.
4014 procselfexe (d_procselfexe.U):
4015 If d_procselfexe is defined, $procselfexe is the filename
4016 of the symbolic link pointing to the absolute pathname of
4017 the executing program.
4019 prototype (prototype.U):
4020 This variable holds the eventual value of CAN_PROTOTYPE, which
4021 indicates the C compiler can handle funciton prototypes.
4023 ptrsize (ptrsize.U):
4024 This variable contains the value of the PTRSIZE symbol, which
4025 indicates to the C program how many bytes there are in a pointer.
4027 quadkind (quadtype.U):
4028 This variable, if defined, encodes the type of a quad:
4029 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4031 quadtype (quadtype.U):
4032 This variable defines Quad_t to be something like long, int,
4033 long long, int64_t, or whatever type is used for 64-bit integers.
4035 randbits (randfunc.U):
4036 Indicates how many bits are produced by the function used to
4037 generate normalized random numbers.
4039 randfunc (randfunc.U):
4040 Indicates the name of the random number function to use.
4041 Values include drand48, random, and rand. In C programs,
4042 the 'Drand01' macro is defined to generate uniformly distributed
4043 random numbers over the range [0., 1.[ (see drand01 and nrand).
4045 random_r_proto (d_random_r.U):
4046 This variable encodes the prototype of random_r.
4047 It is zero if d_random_r is undef, and one of the
4048 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4051 randseedtype (randfunc.U):
4052 Indicates the type of the argument of the seedfunc.
4054 ranlib (orderlib.U):
4055 This variable is set to the pathname of the ranlib program, if it is
4056 needed to generate random libraries. Set to ":" if ar can generate
4057 random libraries or if random libraries are not supported
4059 rd_nodata (nblock_io.U):
4060 This variable holds the return code from read() when no data is
4061 present. It should be -1, but some systems return 0 when O_NDELAY is
4062 used, which is a shame because you cannot make the difference between
4063 no data and an EOF.. Sigh!
4065 readdir64_r_proto (d_readdir64_r.U):
4066 This variable encodes the prototype of readdir64_r.
4067 It is zero if d_readdir64_r is undef, and one of the
4068 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4071 readdir_r_proto (d_readdir_r.U):
4072 This variable encodes the prototype of readdir_r.
4073 It is zero if d_readdir_r is undef, and one of the
4074 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4077 revision (patchlevel.U):
4078 The value of revision comes from the patchlevel.h file.
4079 In a version number such as 5.6.1, this is the "5".
4080 In patchlevel.h, this is referred to as "PERL_REVISION".
4083 This variable is used internally by Configure to determine the
4084 full pathname (if any) of the rm program. After Configure runs,
4085 the value is reset to a plain "rm" and is not useful.
4088 This variable is defined but not used by Configure.
4089 The value is a plain '' and is not useful.
4092 This variable contains the command used by Configure
4093 to copy and execute a cross-compiled executable in the
4094 target host. Useful and available only during Perl build.
4095 Empty string '' if not cross-compiling.
4098 This variable contains 'true' or 'false' depending whether the
4099 nm extraction should be performed or not, according to the value
4100 of usenm and the flags on the Configure command line.
4102 sched_yield (d_pthread_y.U):
4103 This variable defines the way to yield the execution
4104 of the current thread.
4106 scriptdir (scriptdir.U):
4107 This variable holds the name of the directory in which the user wants
4108 to put publicly scripts for the package in question. It is either
4109 the same directory as for binaries, or a special one that can be
4110 mounted across different architectures, like /usr/share. Programs
4111 must be prepared to deal with ~name expansion.
4113 scriptdirexp (scriptdir.U):
4114 This variable is the same as scriptdir, but is filename expanded
4115 at configuration time, for programs not wanting to bother with it.
4118 This variable is used internally by Configure to determine the
4119 full pathname (if any) of the sed program. After Configure runs,
4120 the value is reset to a plain "sed" and is not useful.
4122 seedfunc (randfunc.U):
4123 Indicates the random number generating seed function.
4124 Values include srand48, srandom, and srand.
4126 selectminbits (selectminbits.U):
4127 This variable holds the minimum number of bits operated by select.
4128 That is, if you do select(n, ...), how many bits at least will be
4129 cleared in the masks if some activity is detected. Usually this
4130 is either n or 32*ceil(n/32), especially many little-endians do
4131 the latter. This is only useful if you have select(), naturally.
4133 selecttype (selecttype.U):
4134 This variable holds the type used for the 2nd, 3rd, and 4th
4135 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4136 is defined, and 'int *' otherwise. This is only useful if you
4137 have select(), naturally.
4140 This variable is defined but not used by Configure.
4141 The value is a plain '' and is not useful.
4143 setgrent_r_proto (d_setgrent_r.U):
4144 This variable encodes the prototype of setgrent_r.
4145 It is zero if d_setgrent_r is undef, and one of the
4146 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4149 sethostent_r_proto (d_sethostent_r.U):
4150 This variable encodes the prototype of sethostent_r.
4151 It is zero if d_sethostent_r is undef, and one of the
4152 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4155 setlocale_r_proto (d_setlocale_r.U):
4156 This variable encodes the prototype of setlocale_r.
4157 It is zero if d_setlocale_r is undef, and one of the
4158 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4161 setnetent_r_proto (d_setnetent_r.U):
4162 This variable encodes the prototype of setnetent_r.
4163 It is zero if d_setnetent_r is undef, and one of the
4164 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4167 setprotoent_r_proto (d_setprotoent_r.U):
4168 This variable encodes the prototype of setprotoent_r.
4169 It is zero if d_setprotoent_r is undef, and one of the
4170 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4173 setpwent_r_proto (d_setpwent_r.U):
4174 This variable encodes the prototype of setpwent_r.
4175 It is zero if d_setpwent_r is undef, and one of the
4176 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4179 setservent_r_proto (d_setservent_r.U):
4180 This variable encodes the prototype of setservent_r.
4181 It is zero if d_setservent_r is undef, and one of the
4182 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4186 This variable contains the full pathname of the shell used
4187 on this system to execute Bourne shell scripts. Usually, this will be
4188 /bin/sh, though it's possible that some systems will have /bin/ksh,
4189 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4191 This unit comes before Options.U, so you can't set sh with a '-D'
4192 option, though you can override this (and startsh)
4193 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4196 This variable is defined but not used by Configure.
4197 The value is a plain '' and is not useful.
4199 sharpbang (spitshell.U):
4200 This variable contains the string #! if this system supports that
4203 shmattype (d_shmat.U):
4204 This symbol contains the type of pointer returned by shmat().
4205 It can be 'void *' or 'char *'.
4207 shortsize (intsize.U):
4208 This variable contains the value of the SHORTSIZE symbol which
4209 indicates to the C program how many bytes there are in a short.
4211 shrpenv (libperl.U):
4212 If the user builds a shared libperl.so, then we need to tell the
4213 'perl' executable where it will be able to find the installed libperl.so.
4214 One way to do this on some systems is to set the environment variable
4215 LD_RUN_PATH to the directory that will be the final location of the
4216 shared libperl.so. The makefile can use this with something like
4217 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4219 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4222 See the main perl Makefile.SH for actual working usage.
4223 Alternatively, we might be able to use a command line option such
4224 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4225 $archlibexp/CORE (Linux).
4227 shsharp (spitshell.U):
4228 This variable tells further Configure units whether your sh can
4231 sig_count (sig_name.U):
4232 This variable holds a number larger than the largest valid
4233 signal number. This is usually the same as the NSIG macro.
4235 sig_name (sig_name.U):
4236 This variable holds the signal names, space separated. The leading
4237 SIG in signal name is removed. A ZERO is prepended to the list.
4238 This is currently not used, sig_name_init is used instead.
4240 sig_name_init (sig_name.U):
4241 This variable holds the signal names, enclosed in double quotes and
4242 separated by commas, suitable for use in the SIG_NAME definition
4243 below. A "ZERO" is prepended to the list, and the list is
4244 terminated with a plain 0. The leading SIG in signal names
4245 is removed. See sig_num.
4247 sig_num (sig_name.U):
4248 This variable holds the signal numbers, space separated. A ZERO is
4249 prepended to the list (corresponding to the fake SIGZERO).
4250 Those numbers correspond to the value of the signal listed
4251 in the same place within the sig_name list.
4252 This is currently not used, sig_num_init is used instead.
4254 sig_num_init (sig_name.U):
4255 This variable holds the signal numbers, enclosed in double quotes and
4256 separated by commas, suitable for use in the SIG_NUM definition
4257 below. A "ZERO" is prepended to the list, and the list is
4258 terminated with a plain 0.
4260 sig_size (sig_name.U):
4261 This variable contains the number of elements of the sig_name
4264 signal_t (d_voidsig.U):
4265 This variable holds the type of the signal handler (void or int).
4267 sitearch (sitearch.U):
4268 This variable contains the eventual value of the SITEARCH symbol,
4269 which is the name of the private library for this package. It may
4270 have a ~ on the front. It is up to the makefile to eventually create
4271 this directory while performing installation (with ~ substitution).
4272 The standard distribution will put nothing in this directory.
4273 After perl has been installed, users may install their own local
4274 architecture-dependent modules in this directory with
4275 MakeMaker Makefile.PL
4276 or equivalent. See INSTALL for details.
4278 sitearchexp (sitearch.U):
4279 This variable is the ~name expanded version of sitearch, so that you
4280 may use it directly in Makefiles or shell scripts.
4282 sitebin (sitebin.U):
4283 This variable holds the name of the directory in which the user wants
4284 to put add-on publicly executable files for the package in question. It
4285 is most often a local directory such as /usr/local/bin. Programs using
4286 this variable must be prepared to deal with ~name substitution.
4287 The standard distribution will put nothing in this directory.
4288 After perl has been installed, users may install their own local
4289 executables in this directory with
4290 MakeMaker Makefile.PL
4291 or equivalent. See INSTALL for details.
4293 sitebinexp (sitebin.U):
4294 This is the same as the sitebin variable, but is filename expanded at
4295 configuration time, for use in your makefiles.
4297 sitehtml1dir (sitehtml1dir.U):
4298 This variable contains the name of the directory in which site-specific
4299 html source pages are to be put. It is the responsibility of the
4300 Makefile.SH to get the value of this into the proper command.
4301 You must be prepared to do the ~name expansion yourself.
4302 The standard distribution will put nothing in this directory.
4303 After perl has been installed, users may install their own local
4304 html pages in this directory with
4305 MakeMaker Makefile.PL
4306 or equivalent. See INSTALL for details.
4308 sitehtml1direxp (sitehtml1dir.U):
4309 This variable is the same as the sitehtml1dir variable, but is filename
4310 expanded at configuration time, for convenient use in makefiles.
4312 sitehtml3dir (sitehtml3dir.U):
4313 This variable contains the name of the directory in which site-specific
4314 library html source pages are to be put. It is the responsibility of the
4315 Makefile.SH to get the value of this into the proper command.
4316 You must be prepared to do the ~name expansion yourself.
4317 The standard distribution will put nothing in this directory.
4318 After perl has been installed, users may install their own local
4319 library html pages in this directory with
4320 MakeMaker Makefile.PL
4321 or equivalent. See INSTALL for details.
4323 sitehtml3direxp (sitehtml3dir.U):
4324 This variable is the same as the sitehtml3dir variable, but is filename
4325 expanded at configuration time, for convenient use in makefiles.
4327 sitelib (sitelib.U):
4328 This variable contains the eventual value of the SITELIB symbol,
4329 which is the name of the private library for this package. It may
4330 have a ~ on the front. It is up to the makefile to eventually create
4331 this directory while performing installation (with ~ substitution).
4332 The standard distribution will put nothing in this directory.
4333 After perl has been installed, users may install their own local
4334 architecture-independent modules in this directory with
4335 MakeMaker Makefile.PL
4336 or equivalent. See INSTALL for details.
4338 sitelib_stem (sitelib.U):
4339 This variable is $sitelibexp with any trailing version-specific component
4340 removed. The elements in inc_version_list (inc_version_list.U) can
4341 be tacked onto this variable to generate a list of directories to search.
4343 sitelibexp (sitelib.U):
4344 This variable is the ~name expanded version of sitelib, so that you
4345 may use it directly in Makefiles or shell scripts.
4347 siteman1dir (siteman1dir.U):
4348 This variable contains the name of the directory in which site-specific
4349 manual source pages are to be put. It is the responsibility of the
4350 Makefile.SH to get the value of this into the proper command.
4351 You must be prepared to do the ~name expansion yourself.
4352 The standard distribution will put nothing in this directory.
4353 After perl has been installed, users may install their own local
4354 man1 pages in this directory with
4355 MakeMaker Makefile.PL
4356 or equivalent. See INSTALL for details.
4358 siteman1direxp (siteman1dir.U):
4359 This variable is the same as the siteman1dir variable, but is filename
4360 expanded at configuration time, for convenient use in makefiles.
4362 siteman3dir (siteman3dir.U):
4363 This variable contains the name of the directory in which site-specific
4364 library man source pages are to be put. It is the responsibility of the
4365 Makefile.SH to get the value of this into the proper command.
4366 You must be prepared to do the ~name expansion yourself.
4367 The standard distribution will put nothing in this directory.
4368 After perl has been installed, users may install their own local
4369 man3 pages in this directory with
4370 MakeMaker Makefile.PL
4371 or equivalent. See INSTALL for details.
4373 siteman3direxp (siteman3dir.U):
4374 This variable is the same as the siteman3dir variable, but is filename
4375 expanded at configuration time, for convenient use in makefiles.
4377 siteprefix (siteprefix.U):
4378 This variable holds the full absolute path of the directory below
4379 which the user will install add-on packages.
4380 See INSTALL for usage and examples.
4382 siteprefixexp (siteprefix.U):
4383 This variable holds the full absolute path of the directory below
4384 which the user will install add-on packages. Derived from siteprefix.
4386 sitescript (sitescript.U):
4387 This variable holds the name of the directory in which the user wants
4388 to put add-on publicly executable files for the package in question. It
4389 is most often a local directory such as /usr/local/bin. Programs using
4390 this variable must be prepared to deal with ~name substitution.
4391 The standard distribution will put nothing in this directory.
4392 After perl has been installed, users may install their own local
4393 scripts in this directory with
4394 MakeMaker Makefile.PL
4395 or equivalent. See INSTALL for details.
4397 sitescriptexp (sitescript.U):
4398 This is the same as the sitescript variable, but is filename expanded at
4399 configuration time, for use in your makefiles.
4401 sizesize (sizesize.U):
4402 This variable contains the size of a sizetype in bytes.
4404 sizetype (sizetype.U):
4405 This variable defines sizetype to be something like size_t,
4406 unsigned long, or whatever type is used to declare length
4407 parameters for string functions.
4410 This variable is defined but not used by Configure.
4411 The value is a plain '' and is not useful.
4414 This variable is defined but not used by Configure.
4415 The value is a plain '' and is not useful.
4418 This variable holds the extension used to identify shared libraries
4419 (also known as shared objects) on the system. Usually set to 'so'.
4421 sockethdr (d_socket.U):
4422 This variable has any cpp '-I' flags needed for socket support.
4424 socketlib (d_socket.U):
4425 This variable has the names of any libraries needed for socket support.
4427 socksizetype (socksizetype.U):
4428 This variable holds the type used for the size argument
4429 for various socket calls like accept. Usual values include
4430 socklen_t, size_t, and int.
4433 This variable is used internally by Configure to determine the
4434 full pathname (if any) of the sort program. After Configure runs,
4435 the value is reset to a plain "sort" and is not useful.
4437 spackage (package.U):
4438 This variable contains the name of the package being constructed,
4439 with the first letter uppercased, i.e. suitable for starting
4442 spitshell (spitshell.U):
4443 This variable contains the command necessary to spit out a runnable
4444 shell on this system. It is either cat or a grep '-v' for # comments.
4446 sPRId64 (quadfio.U):
4447 This variable, if defined, contains the string used by stdio to
4448 format 64-bit decimal numbers (format 'd') for output.
4450 sPRIeldbl (longdblfio.U):
4451 This variable, if defined, contains the string used by stdio to
4452 format long doubles (format 'e') for output.
4454 sPRIEUldbl (longdblfio.U):
4455 This variable, if defined, contains the string used by stdio to
4456 format long doubles (format 'E') for output.
4457 The 'U' in the name is to separate this from sPRIeldbl so that even
4458 case-blind systems can see the difference.
4460 sPRIfldbl (longdblfio.U):
4461 This variable, if defined, contains the string used by stdio to
4462 format long doubles (format 'f') for output.
4464 sPRIFUldbl (longdblfio.U):
4465 This variable, if defined, contains the string used by stdio to
4466 format long doubles (format 'F') for output.
4467 The 'U' in the name is to separate this from sPRIfldbl so that even
4468 case-blind systems can see the difference.
4470 sPRIgldbl (longdblfio.U):
4471 This variable, if defined, contains the string used by stdio to
4472 format long doubles (format 'g') for output.
4474 sPRIGUldbl (longdblfio.U):
4475 This variable, if defined, contains the string used by stdio to
4476 format long doubles (format 'G') for output.
4477 The 'U' in the name is to separate this from sPRIgldbl so that even
4478 case-blind systems can see the difference.
4480 sPRIi64 (quadfio.U):
4481 This variable, if defined, contains the string used by stdio to
4482 format 64-bit decimal numbers (format 'i') for output.
4484 sPRIo64 (quadfio.U):
4485 This variable, if defined, contains the string used by stdio to
4486 format 64-bit octal numbers (format 'o') for output.
4488 sPRIu64 (quadfio.U):
4489 This variable, if defined, contains the string used by stdio to
4490 format 64-bit unsigned decimal numbers (format 'u') for output.
4492 sPRIx64 (quadfio.U):
4493 This variable, if defined, contains the string used by stdio to
4494 format 64-bit hexadecimal numbers (format 'x') for output.
4496 sPRIXU64 (quadfio.U):
4497 This variable, if defined, contains the string used by stdio to
4498 format 64-bit hExADECimAl numbers (format 'X') for output.
4499 The 'U' in the name is to separate this from sPRIx64 so that even
4500 case-blind systems can see the difference.
4502 srand48_r_proto (d_srand48_r.U):
4503 This variable encodes the prototype of srand48_r.
4504 It is zero if d_srand48_r is undef, and one of the
4505 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4508 srandom_r_proto (d_srandom_r.U):
4509 This variable encodes the prototype of srandom_r.
4510 It is zero if d_srandom_r is undef, and one of the
4511 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4515 This variable holds the path to the package source. It is up to
4516 the Makefile to use this variable and set VPATH accordingly to
4517 find the sources remotely.
4519 sSCNfldbl (longdblfio.U):
4520 This variable, if defined, contains the string used by stdio to
4521 format long doubles (format 'f') for input.
4523 ssizetype (ssizetype.U):
4524 This variable defines ssizetype to be something like ssize_t,
4525 long or int. It is used by functions that return a count
4526 of bytes or an error condition. It must be a signed type.
4527 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4529 startperl (startperl.U):
4530 This variable contains the string to put on the front of a perl
4531 script to make sure (hopefully) that it runs with perl and not some
4532 shell. Of course, that leading line must be followed by the classical
4534 eval 'exec perl -S $0 ${1+"$@"}'
4535 if $running_under_some_shell;
4536 to guarantee perl startup should the shell execute the script. Note
4537 that this magic incatation is not understood by csh.
4539 startsh (startsh.U):
4540 This variable contains the string to put on the front of a shell
4541 script to make sure (hopefully) that it runs with sh and not some
4544 static_ext (Extensions.U):
4545 This variable holds a list of XS extension files we want to
4546 link statically into the package. It is used by Makefile.
4548 stdchar (stdchar.U):
4549 This variable conditionally defines STDCHAR to be the type of char
4550 used in stdio.h. It has the values "unsigned char" or "char".
4552 stdio_base (d_stdstdio.U):
4553 This variable defines how, given a FILE pointer, fp, to access the
4554 _base field (or equivalent) of stdio.h's FILE structure. This will
4555 be used to define the macro FILE_base(fp).
4557 stdio_bufsiz (d_stdstdio.U):
4558 This variable defines how, given a FILE pointer, fp, to determine
4559 the number of bytes store in the I/O buffer pointer to by the
4560 _base field (or equivalent) of stdio.h's FILE structure. This will
4561 be used to define the macro FILE_bufsiz(fp).
4563 stdio_cnt (d_stdstdio.U):
4564 This variable defines how, given a FILE pointer, fp, to access the
4565 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4566 be used to define the macro FILE_cnt(fp).
4568 stdio_filbuf (d_stdstdio.U):
4569 This variable defines how, given a FILE pointer, fp, to tell
4570 stdio to refill its internal buffers (?). This will
4571 be used to define the macro FILE_filbuf(fp).
4573 stdio_ptr (d_stdstdio.U):
4574 This variable defines how, given a FILE pointer, fp, to access the
4575 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4576 be used to define the macro FILE_ptr(fp).
4578 stdio_stream_array (stdio_streams.U):
4579 This variable tells the name of the array holding the stdio streams.
4580 Usual values include _iob, __iob, and __sF.
4582 strerror_r_proto (d_strerror_r.U):
4583 This variable encodes the prototype of strerror_r.
4584 It is zero if d_strerror_r is undef, and one of the
4585 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4588 strings (i_string.U):
4589 This variable holds the full path of the string header that will be
4590 used. Typically /usr/include/string.h or /usr/include/strings.h.
4593 This variable is defined but not used by Configure.
4594 The value is a plain '' and is not useful.
4596 subversion (patchlevel.U):
4597 The subversion level of this package.
4598 The value of subversion comes from the patchlevel.h file.
4599 In a version number such as 5.6.1, this is the "1".
4600 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4601 This is unique to perl.
4604 This variable holds the place where the manual is located on this
4605 system. It is not the place where the user wants to put his manual
4606 pages. Rather it is the place where Configure may look to find manual
4607 for unix commands (section 1 of the manual usually). See mansrc.
4610 This variable is defined but not used by Configure.
4611 The value is a plain '' and is not useful.
4614 This variable is defined but not used by Configure.
4615 The value is a plain '' and is not useful.
4617 targetarch (Cross.U):
4618 If cross-compiling, this variable contains the target architecture.
4619 If not, this will be empty.
4622 This variable is defined but not used by Configure.
4623 The value is a plain '' and is not useful.
4626 This variable is defined but not used by Configure.
4627 The value is a plain '' and is not useful.
4630 This variable is used internally by Configure to determine the
4631 full pathname (if any) of the test program. After Configure runs,
4632 the value is reset to a plain "test" and is not useful.
4634 timeincl (i_time.U):
4635 This variable holds the full path of the included time header(s).
4637 timetype (d_time.U):
4638 This variable holds the type returned by time(). It can be long,
4639 or time_t on BSD sites (in which case <sys/types.h> should be
4640 included). Anyway, the type Time_t should be used.
4642 tmpnam_r_proto (d_tmpnam_r.U):
4643 This variable encodes the prototype of tmpnam_r.
4644 It is zero if d_tmpnam_r is undef, and one of the
4645 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4649 This variable contains the command used by Configure
4650 to copy to from the target host. Useful and available
4651 only during Perl build.
4652 The string ':' if not cross-compiling.
4655 This variable is used internally by Configure to determine the
4656 full pathname (if any) of the touch program. After Configure runs,
4657 the value is reset to a plain "touch" and is not useful.
4660 This variable is used internally by Configure to determine the
4661 full pathname (if any) of the tr program. After Configure runs,
4662 the value is reset to a plain "tr" and is not useful.
4665 This variable contains the value to be passed to the tr(1)
4666 command to transliterate a newline. Typical values are
4667 '\012' and '\n'. This is needed for EBCDIC systems where
4668 newline is not necessarily '\012'.
4671 This variable is defined but not used by Configure.
4672 The value is a plain '' and is not useful.
4674 ttyname_r_proto (d_ttyname_r.U):
4675 This variable encodes the prototype of ttyname_r.
4676 It is zero if d_ttyname_r is undef, and one of the
4677 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4681 This variable is the size of an U16 in bytes.
4684 This variable contains the C type used for Perl's U16.
4687 This variable is the size of an U32 in bytes.
4690 This variable contains the C type used for Perl's U32.
4693 This variable is the size of an U64 in bytes.
4696 This variable contains the C type used for Perl's U64.
4699 This variable is the size of an U8 in bytes.
4702 This variable contains the C type used for Perl's U8.
4705 This variable contains the format string used for printing a Uid_t.
4707 uidsign (uidsign.U):
4708 This variable contains the signedness of a uidtype.
4709 1 for unsigned, -1 for signed.
4711 uidsize (uidsize.U):
4712 This variable contains the size of a uidtype in bytes.
4714 uidtype (uidtype.U):
4715 This variable defines Uid_t to be something like uid_t, int,
4716 ushort, or whatever type is used to declare user ids in the kernel.
4719 This variable is used internally by Configure to determine the
4720 full pathname (if any) of the uname program. After Configure runs,
4721 the value is reset to a plain "uname" and is not useful.
4724 This variable is used internally by Configure to determine the
4725 full pathname (if any) of the uniq program. After Configure runs,
4726 the value is reset to a plain "uniq" and is not useful.
4728 uquadtype (quadtype.U):
4729 This variable defines Uquad_t to be something like unsigned long,
4730 unsigned int, unsigned long long, uint64_t, or whatever type is
4731 used for 64-bit integers.
4733 use5005threads (usethreads.U):
4734 This variable conditionally defines the USE_5005THREADS symbol,
4735 and indicates that Perl should be built to use the 5.005-based
4736 threading implementation.
4738 use64bitall (use64bits.U):
4739 This variable conditionally defines the USE_64_BIT_ALL symbol,
4740 and indicates that 64-bit integer types should be used
4741 when available. The maximal possible
4742 64-bitness is employed: LP64 or ILP64, meaning that you will
4743 be able to use more than 2 gigabytes of memory. This mode is
4744 even more binary incompatible than USE_64_BIT_INT. You may not
4745 be able to run the resulting executable in a 32-bit CPU at all or
4746 you may need at least to reboot your OS to 64-bit mode.
4748 use64bitint (use64bits.U):
4749 This variable conditionally defines the USE_64_BIT_INT symbol,
4750 and indicates that 64-bit integer types should be used
4751 when available. The minimal possible 64-bitness
4752 is employed, just enough to get 64-bit integers into Perl.
4753 This may mean using for example "long longs", while your memory
4754 may still be limited to 2 gigabytes.
4756 usecrosscompile (Cross.U):
4757 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4758 and indicates that Perl has been cross-compiled.
4761 This variable indicates if the system supports dynamic
4762 loading of some sort. See also dlsrc and dlobj.
4764 usefaststdio (usefaststdio.U):
4765 This variable conditionally defines the USE_FAST_STDIO symbol,
4766 and indicates that Perl should be built to use 'fast stdio'.
4767 Defaults to define in Perls 5.8 and earlier, to undef later.
4769 useithreads (usethreads.U):
4770 This variable conditionally defines the USE_ITHREADS symbol,
4771 and indicates that Perl should be built to use the interpreter-based
4772 threading implementation.
4774 uselargefiles (uselfs.U):
4775 This variable conditionally defines the USE_LARGE_FILES symbol,
4776 and indicates that large file interfaces should be used when
4779 uselongdouble (uselongdbl.U):
4780 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4781 and indicates that long doubles should be used when available.
4783 usemallocwrap (mallocsrc.U):
4784 This variable contains y if we are wrapping malloc to prevent
4785 integer overflow during size calculations.
4787 usemorebits (usemorebits.U):
4788 This variable conditionally defines the USE_MORE_BITS symbol,
4789 and indicates that explicit 64-bit interfaces and long doubles
4790 should be used when available.
4792 usemultiplicity (usemultiplicity.U):
4793 This variable conditionally defines the MULTIPLICITY symbol,
4794 and indicates that Perl should be built to use multiplicity.
4796 usemymalloc (mallocsrc.U):
4797 This variable contains y if the malloc that comes with this package
4798 is desired over the system's version of malloc. People often include
4799 special versions of malloc for effiency, but such versions are often
4800 less portable. See also mallocsrc and mallocobj.
4801 If this is 'y', then -lmalloc is removed from $libs.
4804 This variable contains 'true' or 'false' depending whether the
4805 nm extraction is wanted or not.
4807 useopcode (Extensions.U):
4808 This variable holds either 'true' or 'false' to indicate
4809 whether the Opcode extension should be used. The sole
4810 use for this currently is to allow an easy mechanism
4811 for users to skip the Opcode extension from the Configure
4814 useperlio (useperlio.U):
4815 This variable conditionally defines the USE_PERLIO symbol,
4816 and indicates that the PerlIO abstraction should be
4819 useposix (Extensions.U):
4820 This variable holds either 'true' or 'false' to indicate
4821 whether the POSIX extension should be used. The sole
4822 use for this currently is to allow an easy mechanism
4823 for hints files to indicate that POSIX will not compile
4824 on a particular system.
4826 usereentrant (usethreads.U):
4827 This variable conditionally defines the USE_REENTRANT_API symbol,
4828 which indicates that the thread code may try to use the various
4829 _r versions of library functions. This is only potentially
4830 meaningful if usethreads is set and is very experimental, it is
4831 not even prompted for.
4833 userelocatableinc (bin.U):
4834 This variable is set to true to indicate that perl should relocate
4835 @INC entries at runtime based on the path to the perl binary.
4836 Any @INC paths starting ".../" are relocated relative to the directory
4837 containing the perl binary, and a logical cleanup of the path is then
4838 made around the join point (removing "dir/../" pairs)
4841 This variable is set to true when the user agrees to use sfio.
4842 It is set to false when sfio is not available or when the user
4843 explicitely requests not to use sfio. It is here primarily so
4844 that command-line settings can override the auto-detection of
4845 d_sfio without running into a "WHOA THERE".
4847 useshrplib (libperl.U):
4848 This variable is set to 'true' if the user wishes
4849 to build a shared libperl, and 'false' otherwise.
4851 usesitecustomize (d_sitecustomize.U):
4852 This variable is set to true when the user requires a mechanism that
4853 allows the sysadmin to add entries to @INC at runtime. This variable
4854 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
4856 usesocks (usesocks.U):
4857 This variable conditionally defines the USE_SOCKS symbol,
4858 and indicates that Perl should be built to use SOCKS.
4860 usethreads (usethreads.U):
4861 This variable conditionally defines the USE_THREADS symbol,
4862 and indicates that Perl should be built to use threads.
4864 usevendorprefix (vendorprefix.U):
4865 This variable tells whether the vendorprefix
4866 and consequently other vendor* paths are in use.
4868 usevfork (d_vfork.U):
4869 This variable is set to true when the user accepts to use vfork.
4870 It is set to false when no vfork is available or when the user
4871 explicitely requests not to use vfork.
4874 This variable holds the path of the include files, which is
4875 usually /usr/include. It is mainly used by other Configure units.
4878 This variable is defined but not used by Configure.
4879 The value is a plain '' and is not useful.
4881 uvoformat (perlxvf.U):
4882 This variable contains the format string used for printing
4883 a Perl UV as an unsigned octal integer.
4886 This variable is the size of a UV in bytes.
4889 This variable contains the C type used for Perl's UV.
4891 uvuformat (perlxvf.U):
4892 This variable contains the format string used for printing
4893 a Perl UV as an unsigned decimal integer.
4895 uvxformat (perlxvf.U):
4896 This variable contains the format string used for printing
4897 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4899 uvXUformat (perlxvf.U):
4900 This variable contains the format string used for printing
4901 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4903 vendorarch (vendorarch.U):
4904 This variable contains the value of the PERL_VENDORARCH symbol.
4905 It may have a ~ on the front.
4906 The standard distribution will put nothing in this directory.
4907 Vendors who distribute perl may wish to place their own
4908 architecture-dependent modules and extensions in this directory with
4909 MakeMaker Makefile.PL INSTALLDIRS=vendor
4910 or equivalent. See INSTALL for details.
4912 vendorarchexp (vendorarch.U):
4913 This variable is the ~name expanded version of vendorarch, so that you
4914 may use it directly in Makefiles or shell scripts.
4916 vendorbin (vendorbin.U):
4917 This variable contains the eventual value of the VENDORBIN symbol.
4918 It may have a ~ on the front.
4919 The standard distribution will put nothing in this directory.
4920 Vendors who distribute perl may wish to place additional
4921 binaries in this directory with
4922 MakeMaker Makefile.PL INSTALLDIRS=vendor
4923 or equivalent. See INSTALL for details.
4925 vendorbinexp (vendorbin.U):
4926 This variable is the ~name expanded version of vendorbin, so that you
4927 may use it directly in Makefiles or shell scripts.
4929 vendorhtml1dir (vendorhtml1dir.U):
4930 This variable contains the name of the directory for html
4931 pages. It may have a ~ on the front.
4932 The standard distribution will put nothing in this directory.
4933 Vendors who distribute perl may wish to place their own
4934 html pages in this directory with
4935 MakeMaker Makefile.PL INSTALLDIRS=vendor
4936 or equivalent. See INSTALL for details.
4938 vendorhtml1direxp (vendorhtml1dir.U):
4939 This variable is the ~name expanded version of vendorhtml1dir, so that you
4940 may use it directly in Makefiles or shell scripts.
4942 vendorhtml3dir (vendorhtml3dir.U):
4943 This variable contains the name of the directory for html
4944 library pages. It may have a ~ on the front.
4945 The standard distribution will put nothing in this directory.
4946 Vendors who distribute perl may wish to place their own
4947 html pages for modules and extensions in this directory with
4948 MakeMaker Makefile.PL INSTALLDIRS=vendor
4949 or equivalent. See INSTALL for details.
4951 vendorhtml3direxp (vendorhtml3dir.U):
4952 This variable is the ~name expanded version of vendorhtml3dir, so that you
4953 may use it directly in Makefiles or shell scripts.
4955 vendorlib (vendorlib.U):
4956 This variable contains the eventual value of the VENDORLIB symbol,
4957 which is the name of the private library for this package.
4958 The standard distribution will put nothing in this directory.
4959 Vendors who distribute perl may wish to place their own
4960 modules in this directory with
4961 MakeMaker Makefile.PL INSTALLDIRS=vendor
4962 or equivalent. See INSTALL for details.
4964 vendorlib_stem (vendorlib.U):
4965 This variable is $vendorlibexp with any trailing version-specific component
4966 removed. The elements in inc_version_list (inc_version_list.U) can
4967 be tacked onto this variable to generate a list of directories to search.
4969 vendorlibexp (vendorlib.U):
4970 This variable is the ~name expanded version of vendorlib, so that you
4971 may use it directly in Makefiles or shell scripts.
4973 vendorman1dir (vendorman1dir.U):
4974 This variable contains the name of the directory for man1
4975 pages. It may have a ~ on the front.
4976 The standard distribution will put nothing in this directory.
4977 Vendors who distribute perl may wish to place their own
4978 man1 pages in this directory with
4979 MakeMaker Makefile.PL INSTALLDIRS=vendor
4980 or equivalent. See INSTALL for details.
4982 vendorman1direxp (vendorman1dir.U):
4983 This variable is the ~name expanded version of vendorman1dir, so that you
4984 may use it directly in Makefiles or shell scripts.
4986 vendorman3dir (vendorman3dir.U):
4987 This variable contains the name of the directory for man3
4988 pages. It may have a ~ on the front.
4989 The standard distribution will put nothing in this directory.
4990 Vendors who distribute perl may wish to place their own
4991 man3 pages in this directory with
4992 MakeMaker Makefile.PL INSTALLDIRS=vendor
4993 or equivalent. See INSTALL for details.
4995 vendorman3direxp (vendorman3dir.U):
4996 This variable is the ~name expanded version of vendorman3dir, so that you
4997 may use it directly in Makefiles or shell scripts.
4999 vendorprefix (vendorprefix.U):
5000 This variable holds the full absolute path of the directory below
5001 which the vendor will install add-on packages.
5002 See INSTALL for usage and examples.
5004 vendorprefixexp (vendorprefix.U):
5005 This variable holds the full absolute path of the directory below
5006 which the vendor will install add-on packages. Derived from vendorprefix.
5008 vendorscript (vendorscript.U):
5009 This variable contains the eventual value of the VENDORSCRIPT symbol.
5010 It may have a ~ on the front.
5011 The standard distribution will put nothing in this directory.
5012 Vendors who distribute perl may wish to place additional
5013 executable scripts in this directory with
5014 MakeMaker Makefile.PL INSTALLDIRS=vendor
5015 or equivalent. See INSTALL for details.
5017 vendorscriptexp (vendorscript.U):
5018 This variable is the ~name expanded version of vendorscript, so that you
5019 may use it directly in Makefiles or shell scripts.
5021 version (patchlevel.U):
5022 The full version number of this package, such as 5.6.1 (or 5_6_1).
5023 This combines revision, patchlevel, and subversion to get the
5024 full version number, including any possible subversions.
5025 This is suitable for use as a directory name, and hence is
5026 filesystem dependent.
5028 version_patchlevel_string (patchlevel.U):
5029 This is a string combining version, subversion and
5030 perl_patchlevel (if perl_patchlevel is non-zero).
5031 It is typically something like
5032 'version 7 subversion 1' or
5033 'version 7 subversion 1 patchlevel 11224'
5034 It is computed here to avoid duplication of code in myconfig.SH
5037 versiononly (versiononly.U):
5038 If set, this symbol indicates that only the version-specific
5039 components of a perl installation should be installed.
5040 This may be useful for making a test installation of a new
5041 version without disturbing the existing installation.
5042 Setting versiononly is equivalent to setting installperl's -v option.
5043 In particular, the non-versioned scripts and programs such as
5044 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5045 (see INSTALL for a more complete list). Nor are the man
5047 Usually, this is undef.
5050 This variable is defined but not used by Configure.
5051 The value is a plain '' and is not useful.
5053 voidflags (voidflags.U):
5054 This variable contains the eventual value of the VOIDFLAGS symbol,
5055 which indicates how much support of the void type is given by this
5056 compiler. See VOIDFLAGS for more info.
5059 This variable holds extra path (space-separated) used to find
5060 libraries on this platform, for example CPU-specific libraries
5061 (on multi-CPU platforms) may be listed here.
5064 This variable holds the name of the compiler compiler we
5065 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5068 This variable contains any additional yacc flags desired by the
5069 user. It is up to the Makefile to use this.
5072 This variable is defined but not used by Configure.
5073 The value is a plain '' and is not useful.
5076 This variable is used internally by Configure to determine the
5077 full pathname (if any) of the zip program. After Configure runs,
5078 the value is reset to a plain "zip" and is not useful.