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.
591 d_dir_dd_fd (d_dir_dd_fd.U)
592 This variable conditionally defines the HAS_DIR_DD_FD symbol, which
593 indicates that the DIR directory stream type contains a member
594 variable called dd_fd.
597 This variable conditionally defines the HAS_DIRFD constant,
598 which indicates to the C program that dirfd() is available
599 to return the file descriptor of a directory stream.
601 d_dirnamlen (i_dirent.U):
602 This variable conditionally defines DIRNAMLEN, which indicates
603 to the C program that the length of directory entry names is
604 provided by a d_namelen field.
606 d_dlerror (d_dlerror.U):
607 This variable conditionally defines the HAS_DLERROR symbol, which
608 indicates to the C program that the dlerror() routine is available.
610 d_dlopen (d_dlopen.U):
611 This variable conditionally defines the HAS_DLOPEN symbol, which
612 indicates to the C program that the dlopen() routine is available.
614 d_dlsymun (d_dlsymun.U):
615 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
616 indicates that we need to prepend an underscore to the symbol
617 name before calling dlsym().
619 d_dosuid (d_dosuid.U):
620 This variable conditionally defines the symbol DOSUID, which
621 tells the C program that it should insert setuid emulation code
622 on hosts which have setuid #! scripts disabled.
624 d_drand48_r (d_drand48_r.U):
625 This variable conditionally defines the HAS_DRAND48_R symbol,
626 which indicates to the C program that the drand48_r()
627 routine is available.
629 d_drand48proto (d_drand48proto.U):
630 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
631 which indicates to the C program that the system provides
632 a prototype for the drand48() function. Otherwise, it is
633 up to the program to supply one.
636 This variable conditionally defines HAS_DUP2 if dup2() is
637 available to duplicate file descriptors.
639 d_eaccess (d_eaccess.U):
640 This variable conditionally defines the HAS_EACCESS symbol, which
641 indicates to the C program that the eaccess() routine is available.
643 d_endgrent (d_endgrent.U):
644 This variable conditionally defines the HAS_ENDGRENT symbol, which
645 indicates to the C program that the endgrent() routine is available
646 for sequential access of the group database.
648 d_endgrent_r (d_endgrent_r.U):
649 This variable conditionally defines the HAS_ENDGRENT_R symbol,
650 which indicates to the C program that the endgrent_r()
651 routine is available.
653 d_endhent (d_endhent.U):
654 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
655 available to close whatever was being used for host queries.
657 d_endhostent_r (d_endhostent_r.U):
658 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
659 which indicates to the C program that the endhostent_r()
660 routine is available.
662 d_endnent (d_endnent.U):
663 This variable conditionally defines HAS_ENDNETENT if endnetent() is
664 available to close whatever was being used for network queries.
666 d_endnetent_r (d_endnetent_r.U):
667 This variable conditionally defines the HAS_ENDNETENT_R symbol,
668 which indicates to the C program that the endnetent_r()
669 routine is available.
671 d_endpent (d_endpent.U):
672 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
673 available to close whatever was being used for protocol queries.
675 d_endprotoent_r (d_endprotoent_r.U):
676 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
677 which indicates to the C program that the endprotoent_r()
678 routine is available.
680 d_endpwent (d_endpwent.U):
681 This variable conditionally defines the HAS_ENDPWENT symbol, which
682 indicates to the C program that the endpwent() routine is available
683 for sequential access of the passwd database.
685 d_endpwent_r (d_endpwent_r.U):
686 This variable conditionally defines the HAS_ENDPWENT_R symbol,
687 which indicates to the C program that the endpwent_r()
688 routine is available.
690 d_endsent (d_endsent.U):
691 This variable conditionally defines HAS_ENDSERVENT if endservent() is
692 available to close whatever was being used for service queries.
694 d_endservent_r (d_endservent_r.U):
695 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
696 which indicates to the C program that the endservent_r()
697 routine is available.
699 d_eofnblk (nblock_io.U):
700 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
701 when reading from a non-blocking I/O source.
704 This variable conditionally defines the symbols EUNICE and VAX, which
705 alerts the C program that it must deal with ideosyncracies of VMS.
707 d_faststdio (d_faststdio.U):
708 This variable conditionally defines the HAS_FAST_STDIO symbol,
709 which indicates to the C program that the "fast stdio" is available
710 to manipulate the stdio buffers directly.
712 d_fchdir (d_fchdir.U):
713 This variable conditionally defines the HAS_FCHDIR symbol, which
714 indicates to the C program that the fchdir() routine is available.
716 d_fchmod (d_fchmod.U):
717 This variable conditionally defines the HAS_FCHMOD symbol, which
718 indicates to the C program that the fchmod() routine is available
719 to change mode of opened files.
721 d_fchown (d_fchown.U):
722 This variable conditionally defines the HAS_FCHOWN symbol, which
723 indicates to the C program that the fchown() routine is available
724 to change ownership of opened files.
727 This variable conditionally defines the HAS_FCNTL symbol, and indicates
728 whether the fcntl() function exists
730 d_fcntl_can_lock (d_fcntl_can_lock.U):
731 This variable conditionally defines the FCNTL_CAN_LOCK symbol
732 and indicates whether file locking with fcntl() works.
734 d_fd_macros (d_fd_set.U):
735 This variable contains the eventual value of the HAS_FD_MACROS symbol,
736 which indicates if your C compiler knows about the macros which
737 manipulate an fd_set.
739 d_fd_set (d_fd_set.U):
740 This variable contains the eventual value of the HAS_FD_SET symbol,
741 which indicates if your C compiler knows about the fd_set typedef.
743 d_fds_bits (d_fd_set.U):
744 This variable contains the eventual value of the HAS_FDS_BITS symbol,
745 which indicates if your fd_set typedef contains the fds_bits member.
746 If you have an fd_set typedef, but the dweebs who installed it did
747 a half-fast job and neglected to provide the macros to manipulate
748 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
750 d_fgetpos (d_fgetpos.U):
751 This variable conditionally defines HAS_FGETPOS if fgetpos() is
752 available to get the file position indicator.
754 d_finite (d_finite.U):
755 This variable conditionally defines the HAS_FINITE symbol, which
756 indicates to the C program that the finite() routine is available.
758 d_finitel (d_finitel.U):
759 This variable conditionally defines the HAS_FINITEL symbol, which
760 indicates to the C program that the finitel() routine is available.
762 d_flexfnam (d_flexfnam.U):
763 This variable conditionally defines the FLEXFILENAMES symbol, which
764 indicates that the system supports filenames longer than 14 characters.
767 This variable conditionally defines HAS_FLOCK if flock() is
768 available to do file locking.
770 d_flockproto (d_flockproto.U):
771 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
772 which indicates to the C program that the system provides
773 a prototype for the flock() function. Otherwise, it is
774 up to the program to supply one.
777 This variable conditionally defines the HAS_FORK symbol, which
778 indicates to the C program that the fork() routine is available.
780 d_fp_class (d_fp_class.U):
781 This variable conditionally defines the HAS_FP_CLASS symbol, which
782 indicates to the C program that the fp_class() routine is available.
784 d_fpathconf (d_pathconf.U):
785 This variable conditionally defines the HAS_FPATHCONF symbol, which
786 indicates to the C program that the pathconf() routine is available
787 to determine file-system related limits and options associated
788 with a given open file descriptor.
790 d_fpclass (d_fpclass.U):
791 This variable conditionally defines the HAS_FPCLASS symbol, which
792 indicates to the C program that the fpclass() routine is available.
794 d_fpclassify (d_fpclassify.U):
795 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
796 indicates to the C program that the fpclassify() routine is available.
798 d_fpclassl (d_fpclassl.U):
799 This variable conditionally defines the HAS_FPCLASSL symbol, which
800 indicates to the C program that the fpclassl() routine is available.
802 d_fpos64_t (d_fpos64_t.U):
803 This symbol will be defined if the C compiler supports fpos64_t.
805 d_frexpl (d_frexpl.U):
806 This variable conditionally defines the HAS_FREXPL symbol, which
807 indicates to the C program that the frexpl() routine is available.
809 d_fs_data_s (d_fs_data_s.U):
810 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
811 which indicates that the struct fs_data is supported.
813 d_fseeko (d_fseeko.U):
814 This variable conditionally defines the HAS_FSEEKO symbol, which
815 indicates to the C program that the fseeko() routine is available.
817 d_fsetpos (d_fsetpos.U):
818 This variable conditionally defines HAS_FSETPOS if fsetpos() is
819 available to set the file position indicator.
821 d_fstatfs (d_fstatfs.U):
822 This variable conditionally defines the HAS_FSTATFS symbol, which
823 indicates to the C program that the fstatfs() routine is available.
825 d_fstatvfs (d_statvfs.U):
826 This variable conditionally defines the HAS_FSTATVFS symbol, which
827 indicates to the C program that the fstatvfs() routine is available.
830 This variable conditionally defines the HAS_FSYNC symbol, which
831 indicates to the C program that the fsync() routine is available.
833 d_ftello (d_ftello.U):
834 This variable conditionally defines the HAS_FTELLO symbol, which
835 indicates to the C program that the ftello() routine is available.
838 This variable conditionally defines the HAS_FTIME symbol, which indicates
839 that the ftime() routine exists. The ftime() routine is basically
840 a sub-second accuracy clock.
842 d_futimes (d_futimes.U):
843 This variable conditionally defines the HAS_FUTIMES symbol, which
844 indicates to the C program that the futimes() routine is available.
846 d_Gconvert (d_gconvert.U):
847 This variable holds what Gconvert is defined as to convert
848 floating point numbers into strings. By default, Configure
849 sets this macro to use the first of gconvert, gcvt, or sprintf
850 that pass sprintf-%g-like behaviour tests. If perl is using
851 long doubles, the macro uses the first of the following
852 functions that pass Configure's tests: qgcvt, sprintf (if
853 Configure knows how to make sprintf format long doubles--see
854 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
855 The gconvert_preference and gconvert_ld_preference variables
856 can be used to alter Configure's preferences, for doubles and
857 long doubles, respectively. If present, they contain a
858 space-separated list of one or more of the above function
859 names in the order they should be tried.
861 d_Gconvert may be set to override Configure with a platform-
862 specific function. If this function expects a double, a
863 different value may need to be set by the uselongdouble.cbu
864 call-back unit so that long doubles can be formatted without
867 d_getcwd (d_getcwd.U):
868 This variable conditionally defines the HAS_GETCWD symbol, which
869 indicates to the C program that the getcwd() routine is available
870 to get the current working directory.
872 d_getespwnam (d_getespwnam.U):
873 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
874 available to retrieve enchanced (shadow) password entries by name.
876 d_getfsstat (d_getfsstat.U):
877 This variable conditionally defines the HAS_GETFSSTAT symbol, which
878 indicates to the C program that the getfsstat() routine is available.
880 d_getgrent (d_getgrent.U):
881 This variable conditionally defines the HAS_GETGRENT symbol, which
882 indicates to the C program that the getgrent() routine is available
883 for sequential access of the group database.
885 d_getgrent_r (d_getgrent_r.U):
886 This variable conditionally defines the HAS_GETGRENT_R symbol,
887 which indicates to the C program that the getgrent_r()
888 routine is available.
890 d_getgrgid_r (d_getgrgid_r.U):
891 This variable conditionally defines the HAS_GETGRGID_R symbol,
892 which indicates to the C program that the getgrgid_r()
893 routine is available.
895 d_getgrnam_r (d_getgrnam_r.U):
896 This variable conditionally defines the HAS_GETGRNAM_R symbol,
897 which indicates to the C program that the getgrnam_r()
898 routine is available.
900 d_getgrps (d_getgrps.U):
901 This variable conditionally defines the HAS_GETGROUPS symbol, which
902 indicates to the C program that the getgroups() routine is available
903 to get the list of process groups.
905 d_gethbyaddr (d_gethbyad.U):
906 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
907 indicates to the C program that the gethostbyaddr() routine is available
908 to look up hosts by their IP addresses.
910 d_gethbyname (d_gethbynm.U):
911 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
912 indicates to the C program that the gethostbyname() routine is available
913 to look up host names in some data base or other.
915 d_gethent (d_gethent.U):
916 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
917 available to look up host names in some data base or another.
919 d_gethname (d_gethname.U):
920 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
921 indicates to the C program that the gethostname() routine may be
922 used to derive the host name.
924 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
925 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
926 which indicates to the C program that the gethostbyaddr_r()
927 routine is available.
929 d_gethostbyname_r (d_gethostbyname_r.U):
930 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
931 which indicates to the C program that the gethostbyname_r()
932 routine is available.
934 d_gethostent_r (d_gethostent_r.U):
935 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
936 which indicates to the C program that the gethostent_r()
937 routine is available.
939 d_gethostprotos (d_gethostprotos.U):
940 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
941 which indicates to the C program that <netdb.h> supplies
942 prototypes for the various gethost*() functions.
943 See also netdbtype.U for probing for various netdb types.
945 d_getitimer (d_getitimer.U):
946 This variable conditionally defines the HAS_GETITIMER symbol, which
947 indicates to the C program that the getitimer() routine is available.
949 d_getlogin (d_getlogin.U):
950 This variable conditionally defines the HAS_GETLOGIN symbol, which
951 indicates to the C program that the getlogin() routine is available
952 to get the login name.
954 d_getlogin_r (d_getlogin_r.U):
955 This variable conditionally defines the HAS_GETLOGIN_R symbol,
956 which indicates to the C program that the getlogin_r()
957 routine is available.
959 d_getmnt (d_getmnt.U):
960 This variable conditionally defines the HAS_GETMNT symbol, which
961 indicates to the C program that the getmnt() routine is available
962 to retrieve one or more mount info blocks by filename.
964 d_getmntent (d_getmntent.U):
965 This variable conditionally defines the HAS_GETMNTENT symbol, which
966 indicates to the C program that the getmntent() routine is available
967 to iterate through mounted files to get their mount info.
969 d_getnbyaddr (d_getnbyad.U):
970 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
971 indicates to the C program that the getnetbyaddr() routine is available
972 to look up networks by their IP addresses.
974 d_getnbyname (d_getnbynm.U):
975 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
976 indicates to the C program that the getnetbyname() routine is available
977 to look up networks by their names.
979 d_getnent (d_getnent.U):
980 This variable conditionally defines HAS_GETNETENT if getnetent() is
981 available to look up network names in some data base or another.
983 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
984 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
985 which indicates to the C program that the getnetbyaddr_r()
986 routine is available.
988 d_getnetbyname_r (d_getnetbyname_r.U):
989 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
990 which indicates to the C program that the getnetbyname_r()
991 routine is available.
993 d_getnetent_r (d_getnetent_r.U):
994 This variable conditionally defines the HAS_GETNETENT_R symbol,
995 which indicates to the C program that the getnetent_r()
996 routine is available.
998 d_getnetprotos (d_getnetprotos.U):
999 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1000 which indicates to the C program that <netdb.h> supplies
1001 prototypes for the various getnet*() functions.
1002 See also netdbtype.U for probing for various netdb types.
1004 d_getpagsz (d_getpagsz.U):
1005 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1006 is available to get the system page size.
1008 d_getpbyname (d_getprotby.U):
1009 This variable conditionally defines the HAS_GETPROTOBYNAME
1010 symbol, which indicates to the C program that the
1011 getprotobyname() routine is available to look up protocols
1014 d_getpbynumber (d_getprotby.U):
1015 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1016 symbol, which indicates to the C program that the
1017 getprotobynumber() routine is available to look up protocols
1020 d_getpent (d_getpent.U):
1021 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1022 available to look up protocols in some data base or another.
1024 d_getpgid (d_getpgid.U):
1025 This variable conditionally defines the HAS_GETPGID symbol, which
1026 indicates to the C program that the getpgid(pid) function
1027 is available to get the process group id.
1029 d_getpgrp (d_getpgrp.U):
1030 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1031 available to get the current process group.
1033 d_getpgrp2 (d_getpgrp2.U):
1034 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1035 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1036 is available to get the current process group.
1038 d_getppid (d_getppid.U):
1039 This variable conditionally defines the HAS_GETPPID symbol, which
1040 indicates to the C program that the getppid() routine is available
1041 to get the parent process ID.
1043 d_getprior (d_getprior.U):
1044 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1045 is available to get a process's priority.
1047 d_getprotobyname_r (d_getprotobyname_r.U):
1048 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1049 which indicates to the C program that the getprotobyname_r()
1050 routine is available.
1052 d_getprotobynumber_r (d_getprotobynumber_r.U):
1053 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1054 which indicates to the C program that the getprotobynumber_r()
1055 routine is available.
1057 d_getprotoent_r (d_getprotoent_r.U):
1058 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1059 which indicates to the C program that the getprotoent_r()
1060 routine is available.
1062 d_getprotoprotos (d_getprotoprotos.U):
1063 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1064 which indicates to the C program that <netdb.h> supplies
1065 prototypes for the various getproto*() functions.
1066 See also netdbtype.U for probing for various netdb types.
1068 d_getprpwnam (d_getprpwnam.U):
1069 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1070 available to retrieve protected (shadow) password entries by name.
1072 d_getpwent (d_getpwent.U):
1073 This variable conditionally defines the HAS_GETPWENT symbol, which
1074 indicates to the C program that the getpwent() routine is available
1075 for sequential access of the passwd database.
1077 d_getpwent_r (d_getpwent_r.U):
1078 This variable conditionally defines the HAS_GETPWENT_R symbol,
1079 which indicates to the C program that the getpwent_r()
1080 routine is available.
1082 d_getpwnam_r (d_getpwnam_r.U):
1083 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1084 which indicates to the C program that the getpwnam_r()
1085 routine is available.
1087 d_getpwuid_r (d_getpwuid_r.U):
1088 This variable conditionally defines the HAS_GETPWUID_R symbol,
1089 which indicates to the C program that the getpwuid_r()
1090 routine is available.
1092 d_getsbyname (d_getsrvby.U):
1093 This variable conditionally defines the HAS_GETSERVBYNAME
1094 symbol, which indicates to the C program that the
1095 getservbyname() routine is available to look up services
1098 d_getsbyport (d_getsrvby.U):
1099 This variable conditionally defines the HAS_GETSERVBYPORT
1100 symbol, which indicates to the C program that the
1101 getservbyport() routine is available to look up services
1104 d_getsent (d_getsent.U):
1105 This variable conditionally defines HAS_GETSERVENT if getservent() is
1106 available to look up network services in some data base or another.
1108 d_getservbyname_r (d_getservbyname_r.U):
1109 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1110 which indicates to the C program that the getservbyname_r()
1111 routine is available.
1113 d_getservbyport_r (d_getservbyport_r.U):
1114 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1115 which indicates to the C program that the getservbyport_r()
1116 routine is available.
1118 d_getservent_r (d_getservent_r.U):
1119 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1120 which indicates to the C program that the getservent_r()
1121 routine is available.
1123 d_getservprotos (d_getservprotos.U):
1124 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1125 which indicates to the C program that <netdb.h> supplies
1126 prototypes for the various getserv*() functions.
1127 See also netdbtype.U for probing for various netdb types.
1129 d_getspnam (d_getspnam.U):
1130 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1131 available to retrieve SysV shadow password entries by name.
1133 d_getspnam_r (d_getspnam_r.U):
1134 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1135 which indicates to the C program that the getspnam_r()
1136 routine is available.
1138 d_gettimeod (d_ftime.U):
1139 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1140 indicates that the gettimeofday() system call exists (to obtain a
1141 sub-second accuracy clock). You should probably include <sys/resource.h>.
1143 d_gmtime_r (d_gmtime_r.U):
1144 This variable conditionally defines the HAS_GMTIME_R symbol,
1145 which indicates to the C program that the gmtime_r()
1146 routine is available.
1148 d_gnulibc (d_gnulibc.U):
1149 Defined if we're dealing with the GNU C Library.
1151 d_grpasswd (i_grp.U):
1152 This variable conditionally defines GRPASSWD, which indicates
1153 that struct group in <grp.h> contains gr_passwd.
1155 d_hasmntopt (d_hasmntopt.U):
1156 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1157 indicates to the C program that the hasmntopt() routine is available
1158 to query the mount options of file systems.
1160 d_htonl (d_htonl.U):
1161 This variable conditionally defines HAS_HTONL if htonl() and its
1162 friends are available to do network order byte swapping.
1164 d_ilogbl (d_ilogbl.U):
1165 This variable conditionally defines the HAS_ILOGBL symbol, which
1166 indicates to the C program that the ilogbl() routine is available.
1167 If scalbnl is also present we can emulate frexpl.
1169 d_inc_version_list (inc_version_list.U):
1170 This variable conditionally defines PERL_INC_VERSION_LIST.
1171 It is set to undef when PERL_INC_VERSION_LIST is empty.
1173 d_index (d_strchr.U):
1174 This variable conditionally defines HAS_INDEX if index() and
1175 rindex() are available for string searching.
1177 d_inetaton (d_inetaton.U):
1178 This variable conditionally defines the HAS_INET_ATON symbol, which
1179 indicates to the C program that the inet_aton() function is available
1180 to parse IP address "dotted-quad" strings.
1182 d_int64_t (d_int64_t.U):
1183 This symbol will be defined if the C compiler supports int64_t.
1185 d_isascii (d_isascii.U):
1186 This variable conditionally defines the HAS_ISASCII constant,
1187 which indicates to the C program that isascii() is available.
1189 d_isfinite (d_isfinite.U):
1190 This variable conditionally defines the HAS_ISFINITE symbol, which
1191 indicates to the C program that the isfinite() routine is available.
1193 d_isinf (d_isinf.U):
1194 This variable conditionally defines the HAS_ISINF symbol, which
1195 indicates to the C program that the isinf() routine is available.
1197 d_isnan (d_isnan.U):
1198 This variable conditionally defines the HAS_ISNAN symbol, which
1199 indicates to the C program that the isnan() routine is available.
1201 d_isnanl (d_isnanl.U):
1202 This variable conditionally defines the HAS_ISNANL symbol, which
1203 indicates to the C program that the isnanl() routine is available.
1205 d_killpg (d_killpg.U):
1206 This variable conditionally defines the HAS_KILLPG symbol, which
1207 indicates to the C program that the killpg() routine is available
1208 to kill process groups.
1210 d_lchown (d_lchown.U):
1211 This variable conditionally defines the HAS_LCHOWN symbol, which
1212 indicates to the C program that the lchown() routine is available
1213 to operate on a symbolic link (instead of following the link).
1215 d_ldbl_dig (d_ldbl_dig.U):
1216 This variable conditionally defines d_ldbl_dig if this system's
1217 header files provide LDBL_DIG, which is the number of significant
1218 digits in a long double precision number.
1220 d_libm_lib_version (d_libm_lib_version.U):
1221 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1222 which indicates to the C program that math.h defines _LIB_VERSION
1223 being available in libm
1226 This variable conditionally defines HAS_LINK if link() is
1227 available to create hard links.
1229 d_localtime_r (d_localtime_r.U):
1230 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1231 which indicates to the C program that the localtime_r()
1232 routine is available.
1234 d_localtime_r_needs_tzset (d_localtime_r.U):
1235 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1236 symbol, which makes us call tzset before localtime_r()
1238 d_locconv (d_locconv.U):
1239 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1240 available for numeric and monetary formatting conventions.
1242 d_lockf (d_lockf.U):
1243 This variable conditionally defines HAS_LOCKF if lockf() is
1244 available to do file locking.
1246 d_longdbl (d_longdbl.U):
1247 This variable conditionally defines HAS_LONG_DOUBLE if
1248 the long double type is supported.
1250 d_longlong (d_longlong.U):
1251 This variable conditionally defines HAS_LONG_LONG if
1252 the long long type is supported.
1254 d_lseekproto (d_lseekproto.U):
1255 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1256 which indicates to the C program that the system provides
1257 a prototype for the lseek() function. Otherwise, it is
1258 up to the program to supply one.
1260 d_lstat (d_lstat.U):
1261 This variable conditionally defines HAS_LSTAT if lstat() is
1262 available to do file stats on symbolic links.
1264 d_madvise (d_madvise.U):
1265 This variable conditionally defines HAS_MADVISE if madvise() is
1266 available to map a file into memory.
1268 d_malloc_good_size (d_malloc_size.U):
1269 This symbol, if defined, indicates that the malloc_good_size
1270 routine is available for use.
1272 d_malloc_size (d_malloc_size.U):
1273 This symbol, if defined, indicates that the malloc_size
1274 routine is available for use.
1276 d_mblen (d_mblen.U):
1277 This variable conditionally defines the HAS_MBLEN symbol, which
1278 indicates to the C program that the mblen() routine is available
1279 to find the number of bytes in a multibye character.
1281 d_mbstowcs (d_mbstowcs.U):
1282 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1283 indicates to the C program that the mbstowcs() routine is available
1284 to convert a multibyte string into a wide character string.
1286 d_mbtowc (d_mbtowc.U):
1287 This variable conditionally defines the HAS_MBTOWC symbol, which
1288 indicates to the C program that the mbtowc() routine is available
1289 to convert multibyte to a wide character.
1291 d_memchr (d_memchr.U):
1292 This variable conditionally defines the HAS_MEMCHR symbol, which
1293 indicates to the C program that the memchr() routine is available
1294 to locate characters within a C string.
1296 d_memcmp (d_memcmp.U):
1297 This variable conditionally defines the HAS_MEMCMP symbol, which
1298 indicates to the C program that the memcmp() routine is available
1299 to compare blocks of memory.
1301 d_memcpy (d_memcpy.U):
1302 This variable conditionally defines the HAS_MEMCPY symbol, which
1303 indicates to the C program that the memcpy() routine is available
1304 to copy blocks of memory.
1306 d_memmove (d_memmove.U):
1307 This variable conditionally defines the HAS_MEMMOVE symbol, which
1308 indicates to the C program that the memmove() routine is available
1309 to copy potentatially overlapping blocks of memory.
1311 d_memset (d_memset.U):
1312 This variable conditionally defines the HAS_MEMSET symbol, which
1313 indicates to the C program that the memset() routine is available
1314 to set blocks of memory.
1316 d_mkdir (d_mkdir.U):
1317 This variable conditionally defines the HAS_MKDIR symbol, which
1318 indicates to the C program that the mkdir() routine is available
1319 to create directories..
1321 d_mkdtemp (d_mkdtemp.U):
1322 This variable conditionally defines the HAS_MKDTEMP symbol, which
1323 indicates to the C program that the mkdtemp() routine is available
1324 to exclusively create a uniquely named temporary directory.
1326 d_mkfifo (d_mkfifo.U):
1327 This variable conditionally defines the HAS_MKFIFO symbol, which
1328 indicates to the C program that the mkfifo() routine is available.
1330 d_mkstemp (d_mkstemp.U):
1331 This variable conditionally defines the HAS_MKSTEMP symbol, which
1332 indicates to the C program that the mkstemp() routine is available
1333 to exclusively create and open a uniquely named temporary file.
1335 d_mkstemps (d_mkstemps.U):
1336 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1337 indicates to the C program that the mkstemps() routine is available
1338 to exclusively create and open a uniquely named (with a suffix)
1341 d_mktime (d_mktime.U):
1342 This variable conditionally defines the HAS_MKTIME symbol, which
1343 indicates to the C program that the mktime() routine is available.
1346 This variable conditionally defines HAS_MMAP if mmap() is
1347 available to map a file into memory.
1349 d_modfl (d_modfl.U):
1350 This variable conditionally defines the HAS_MODFL symbol, which
1351 indicates to the C program that the modfl() routine is available.
1353 d_modfl_pow32_bug (d_modfl.U):
1354 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1355 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1356 For example from 4294967303.150000 one would get 4294967302.000000
1357 and 1.150000. The bug has been seen in certain versions of glibc,
1358 release 2.2.2 is known to be okay.
1360 d_modflproto (d_modfl.U):
1361 This symbol, if defined, indicates that the system provides
1362 a prototype for the modfl() function. Otherwise, it is up
1363 to the program to supply one. C99 says it should be
1364 long double modfl(long double, long double *);
1366 d_mprotect (d_mprotect.U):
1367 This variable conditionally defines HAS_MPROTECT if mprotect() is
1368 available to modify the access protection of a memory mapped file.
1371 This variable conditionally defines the HAS_MSG symbol, which
1372 indicates that the entire msg*(2) library is present.
1374 d_msg_ctrunc (d_socket.U):
1375 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1376 which indicates that the MSG_CTRUNC is available. #ifdef is
1377 not enough because it may be an enum, glibc has been known to do this.
1379 d_msg_dontroute (d_socket.U):
1380 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1381 which indicates that the MSG_DONTROUTE is available. #ifdef is
1382 not enough because it may be an enum, glibc has been known to do this.
1384 d_msg_oob (d_socket.U):
1385 This variable conditionally defines the HAS_MSG_OOB symbol,
1386 which indicates that the MSG_OOB is available. #ifdef is
1387 not enough because it may be an enum, glibc has been known to do this.
1389 d_msg_peek (d_socket.U):
1390 This variable conditionally defines the HAS_MSG_PEEK symbol,
1391 which indicates that the MSG_PEEK is available. #ifdef is
1392 not enough because it may be an enum, glibc has been known to do this.
1394 d_msg_proxy (d_socket.U):
1395 This variable conditionally defines the HAS_MSG_PROXY symbol,
1396 which indicates that the MSG_PROXY is available. #ifdef is
1397 not enough because it may be an enum, glibc has been known to do this.
1399 d_msgctl (d_msgctl.U):
1400 This variable conditionally defines the HAS_MSGCTL symbol, which
1401 indicates to the C program that the msgctl() routine is available.
1403 d_msgget (d_msgget.U):
1404 This variable conditionally defines the HAS_MSGGET symbol, which
1405 indicates to the C program that the msgget() routine is available.
1407 d_msghdr_s (d_msghdr_s.U):
1408 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1409 which indicates that the struct msghdr is supported.
1411 d_msgrcv (d_msgrcv.U):
1412 This variable conditionally defines the HAS_MSGRCV symbol, which
1413 indicates to the C program that the msgrcv() routine is available.
1415 d_msgsnd (d_msgsnd.U):
1416 This variable conditionally defines the HAS_MSGSND symbol, which
1417 indicates to the C program that the msgsnd() routine is available.
1419 d_msync (d_msync.U):
1420 This variable conditionally defines HAS_MSYNC if msync() is
1421 available to synchronize a mapped file.
1423 d_munmap (d_munmap.U):
1424 This variable conditionally defines HAS_MUNMAP if munmap() is
1425 available to unmap a region mapped by mmap().
1427 d_mymalloc (mallocsrc.U):
1428 This variable conditionally defines MYMALLOC in case other parts
1429 of the source want to take special action if MYMALLOC is used.
1430 This may include different sorts of profiling or error detection.
1433 This variable conditionally defines the HAS_NICE symbol, which
1434 indicates to the C program that the nice() routine is available.
1436 d_nl_langinfo (d_nl_langinfo.U):
1437 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1438 indicates to the C program that the nl_langinfo() routine is available.
1440 d_nv_preserves_uv (perlxv.U):
1441 This variable indicates whether a variable of type nvtype
1442 can preserve all the bits a variable of type uvtype.
1444 d_nv_zero_is_allbits_zero (perlxv.U):
1445 This variable indicates whether a variable of type nvtype
1446 stores 0.0 in memory as all bits zero.
1448 d_off64_t (d_off64_t.U):
1449 This symbol will be defined if the C compiler supports off64_t.
1451 d_old_pthread_create_joinable (d_pthrattrj.U):
1452 This variable conditionally defines pthread_create_joinable.
1453 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1455 d_oldpthreads (usethreads.U):
1456 This variable conditionally defines the OLD_PTHREADS_API symbol,
1457 and indicates that Perl should be built to use the old
1458 draft POSIX threads API. This is only potentially meaningful if
1461 d_oldsock (d_socket.U):
1462 This variable conditionally defines the OLDSOCKET symbol, which
1463 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1465 d_open3 (d_open3.U):
1466 This variable conditionally defines the HAS_OPEN3 manifest constant,
1467 which indicates to the C program that the 3 argument version of
1468 the open(2) function is available.
1470 d_pathconf (d_pathconf.U):
1471 This variable conditionally defines the HAS_PATHCONF symbol, which
1472 indicates to the C program that the pathconf() routine is available
1473 to determine file-system related limits and options associated
1474 with a given filename.
1476 d_pause (d_pause.U):
1477 This variable conditionally defines the HAS_PAUSE symbol, which
1478 indicates to the C program that the pause() routine is available
1479 to suspend a process until a signal is received.
1481 d_perl_otherlibdirs (otherlibdirs.U):
1482 This variable conditionally defines PERL_OTHERLIBDIRS, which
1483 contains a colon-separated set of paths for the perl binary to
1484 include in @INC. See also otherlibdirs.
1486 d_phostname (d_gethname.U):
1487 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1488 contains the shell command which, when fed to popen(), may be
1489 used to derive the host name.
1492 This variable conditionally defines the HAS_PIPE symbol, which
1493 indicates to the C program that the pipe() routine is available
1494 to create an inter-process channel.
1497 This variable conditionally defines the HAS_POLL symbol, which
1498 indicates to the C program that the poll() routine is available
1499 to poll active file descriptors.
1501 d_portable (d_portable.U):
1502 This variable conditionally defines the PORTABLE symbol, which
1503 indicates to the C program that it should not assume that it is
1504 running on the machine it was compiled on.
1506 d_PRId64 (quadfio.U):
1507 This variable conditionally defines the PERL_PRId64 symbol, which
1508 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1510 d_PRIeldbl (longdblfio.U):
1511 This variable conditionally defines the PERL_PRIfldbl symbol, which
1512 indiciates that stdio has a symbol to print long doubles.
1514 d_PRIEUldbl (longdblfio.U):
1515 This variable conditionally defines the PERL_PRIfldbl symbol, which
1516 indiciates that stdio has a symbol to print long doubles.
1517 The 'U' in the name is to separate this from d_PRIeldbl so that even
1518 case-blind systems can see the difference.
1520 d_PRIfldbl (longdblfio.U):
1521 This variable conditionally defines the PERL_PRIfldbl symbol, which
1522 indiciates that stdio has a symbol to print long doubles.
1524 d_PRIFUldbl (longdblfio.U):
1525 This variable conditionally defines the PERL_PRIfldbl symbol, which
1526 indiciates that stdio has a symbol to print long doubles.
1527 The 'U' in the name is to separate this from d_PRIfldbl so that even
1528 case-blind systems can see the difference.
1530 d_PRIgldbl (longdblfio.U):
1531 This variable conditionally defines the PERL_PRIfldbl symbol, which
1532 indiciates that stdio has a symbol to print long doubles.
1534 d_PRIGUldbl (longdblfio.U):
1535 This variable conditionally defines the PERL_PRIfldbl symbol, which
1536 indiciates that stdio has a symbol to print long doubles.
1537 The 'U' in the name is to separate this from d_PRIgldbl so that even
1538 case-blind systems can see the difference.
1540 d_PRIi64 (quadfio.U):
1541 This variable conditionally defines the PERL_PRIi64 symbol, which
1542 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1544 d_printf_format_null:
1545 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
1546 indicates the C compiler allows printf-like formats to be null.
1548 d_PRIo64 (quadfio.U):
1549 This variable conditionally defines the PERL_PRIo64 symbol, which
1550 indiciates that stdio has a symbol to print 64-bit octal numbers.
1552 d_PRIu64 (quadfio.U):
1553 This variable conditionally defines the PERL_PRIu64 symbol, which
1554 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1557 d_PRIx64 (quadfio.U):
1558 This variable conditionally defines the PERL_PRIx64 symbol, which
1559 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1561 d_PRIXU64 (quadfio.U):
1562 This variable conditionally defines the PERL_PRIXU64 symbol, which
1563 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1564 The 'U' in the name is to separate this from d_PRIx64 so that even
1565 case-blind systems can see the difference.
1567 d_procselfexe (d_procselfexe.U):
1568 Defined if $procselfexe is symlink to the absolute
1569 pathname of the executing program.
1571 d_pthread_atfork (d_pthread_atfork.U):
1572 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1573 which indicates to the C program that the pthread_atfork()
1574 routine is available.
1576 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1577 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1578 pthread_attr_setscope() is available to set the contention scope
1579 attribute of a thread attribute object.
1581 d_pthread_yield (d_pthread_y.U):
1582 This variable conditionally defines the HAS_PTHREAD_YIELD
1583 symbol if the pthread_yield routine is available to yield
1584 the execution of the current thread.
1587 This variable conditionally defines PWAGE, which indicates
1588 that struct passwd contains pw_age.
1590 d_pwchange (i_pwd.U):
1591 This variable conditionally defines PWCHANGE, which indicates
1592 that struct passwd contains pw_change.
1594 d_pwclass (i_pwd.U):
1595 This variable conditionally defines PWCLASS, which indicates
1596 that struct passwd contains pw_class.
1598 d_pwcomment (i_pwd.U):
1599 This variable conditionally defines PWCOMMENT, which indicates
1600 that struct passwd contains pw_comment.
1602 d_pwexpire (i_pwd.U):
1603 This variable conditionally defines PWEXPIRE, which indicates
1604 that struct passwd contains pw_expire.
1606 d_pwgecos (i_pwd.U):
1607 This variable conditionally defines PWGECOS, which indicates
1608 that struct passwd contains pw_gecos.
1610 d_pwpasswd (i_pwd.U):
1611 This variable conditionally defines PWPASSWD, which indicates
1612 that struct passwd contains pw_passwd.
1614 d_pwquota (i_pwd.U):
1615 This variable conditionally defines PWQUOTA, which indicates
1616 that struct passwd contains pw_quota.
1618 d_qgcvt (d_qgcvt.U):
1619 This variable conditionally defines the HAS_QGCVT symbol, which
1620 indicates to the C program that the qgcvt() routine is available.
1622 d_quad (quadtype.U):
1623 This variable, if defined, tells that there's a 64-bit integer type,
1626 d_random_r (d_random_r.U):
1627 This variable conditionally defines the HAS_RANDOM_R symbol,
1628 which indicates to the C program that the random_r()
1629 routine is available.
1631 d_readdir (d_readdir.U):
1632 This variable conditionally defines HAS_READDIR if readdir() is
1633 available to read directory entries.
1635 d_readdir64_r (d_readdir64_r.U):
1636 This variable conditionally defines the HAS_READDIR64_R symbol,
1637 which indicates to the C program that the readdir64_r()
1638 routine is available.
1640 d_readdir_r (d_readdir_r.U):
1641 This variable conditionally defines the HAS_READDIR_R symbol,
1642 which indicates to the C program that the readdir_r()
1643 routine is available.
1645 d_readlink (d_readlink.U):
1646 This variable conditionally defines the HAS_READLINK symbol, which
1647 indicates to the C program that the readlink() routine is available
1648 to read the value of a symbolic link.
1650 d_readv (d_readv.U):
1651 This variable conditionally defines the HAS_READV symbol, which
1652 indicates to the C program that the readv() routine is available.
1654 d_recvmsg (d_recvmsg.U):
1655 This variable conditionally defines the HAS_RECVMSG symbol, which
1656 indicates to the C program that the recvmsg() routine is available.
1658 d_rename (d_rename.U):
1659 This variable conditionally defines the HAS_RENAME symbol, which
1660 indicates to the C program that the rename() routine is available
1663 d_rewinddir (d_readdir.U):
1664 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1667 d_rmdir (d_rmdir.U):
1668 This variable conditionally defines HAS_RMDIR if rmdir() is
1669 available to remove directories.
1671 d_safebcpy (d_safebcpy.U):
1672 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1673 the bcopy() routine can do overlapping copies. Normally, you
1674 should probably use memmove().
1676 d_safemcpy (d_safemcpy.U):
1677 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1678 the memcpy() routine can do overlapping copies.
1679 For overlapping copies, memmove() should be used, if available.
1681 d_sanemcmp (d_sanemcmp.U):
1682 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1683 the memcpy() routine is available and can be used to compare relative
1684 magnitudes of chars with their high bits set.
1686 d_sbrkproto (d_sbrkproto.U):
1687 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1688 which indicates to the C program that the system provides
1689 a prototype for the sbrk() function. Otherwise, it is
1690 up to the program to supply one.
1692 d_scalbnl (d_scalbnl.U):
1693 This variable conditionally defines the HAS_SCALBNL symbol, which
1694 indicates to the C program that the scalbnl() routine is available.
1695 If ilogbl is also present we can emulate frexpl.
1697 d_sched_yield (d_pthread_y.U):
1698 This variable conditionally defines the HAS_SCHED_YIELD
1699 symbol if the sched_yield routine is available to yield
1700 the execution of the current thread.
1702 d_scm_rights (d_socket.U):
1703 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1704 which indicates that the SCM_RIGHTS is available. #ifdef is
1705 not enough because it may be an enum, glibc has been known to do this.
1707 d_SCNfldbl (longdblfio.U):
1708 This variable conditionally defines the PERL_PRIfldbl symbol, which
1709 indiciates that stdio has a symbol to scan long doubles.
1711 d_seekdir (d_readdir.U):
1712 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1715 d_select (d_select.U):
1716 This variable conditionally defines HAS_SELECT if select() is
1717 available to select active file descriptors. A <sys/time.h>
1718 inclusion may be necessary for the timeout field.
1721 This variable conditionally defines the HAS_SEM symbol, which
1722 indicates that the entire sem*(2) library is present.
1724 d_semctl (d_semctl.U):
1725 This variable conditionally defines the HAS_SEMCTL symbol, which
1726 indicates to the C program that the semctl() routine is available.
1728 d_semctl_semid_ds (d_union_semun.U):
1729 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1730 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1732 d_semctl_semun (d_union_semun.U):
1733 This variable conditionally defines USE_SEMCTL_SEMUN, which
1734 indicates that union semun is to be used for semctl IPC_STAT.
1736 d_semget (d_semget.U):
1737 This variable conditionally defines the HAS_SEMGET symbol, which
1738 indicates to the C program that the semget() routine is available.
1740 d_semop (d_semop.U):
1741 This variable conditionally defines the HAS_SEMOP symbol, which
1742 indicates to the C program that the semop() routine is available.
1744 d_sendmsg (d_sendmsg.U):
1745 This variable conditionally defines the HAS_SENDMSG symbol, which
1746 indicates to the C program that the sendmsg() routine is available.
1748 d_setegid (d_setegid.U):
1749 This variable conditionally defines the HAS_SETEGID symbol, which
1750 indicates to the C program that the setegid() routine is available
1751 to change the effective gid of the current program.
1753 d_seteuid (d_seteuid.U):
1754 This variable conditionally defines the HAS_SETEUID symbol, which
1755 indicates to the C program that the seteuid() routine is available
1756 to change the effective uid of the current program.
1758 d_setgrent (d_setgrent.U):
1759 This variable conditionally defines the HAS_SETGRENT symbol, which
1760 indicates to the C program that the setgrent() routine is available
1761 for initializing sequential access to the group database.
1763 d_setgrent_r (d_setgrent_r.U):
1764 This variable conditionally defines the HAS_SETGRENT_R symbol,
1765 which indicates to the C program that the setgrent_r()
1766 routine is available.
1768 d_setgrps (d_setgrps.U):
1769 This variable conditionally defines the HAS_SETGROUPS symbol, which
1770 indicates to the C program that the setgroups() routine is available
1771 to set the list of process groups.
1773 d_sethent (d_sethent.U):
1774 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1777 d_sethostent_r (d_sethostent_r.U):
1778 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1779 which indicates to the C program that the sethostent_r()
1780 routine is available.
1782 d_setitimer (d_setitimer.U):
1783 This variable conditionally defines the HAS_SETITIMER symbol, which
1784 indicates to the C program that the setitimer() routine is available.
1786 d_setlinebuf (d_setlnbuf.U):
1787 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1788 indicates to the C program that the setlinebuf() routine is available
1789 to change stderr or stdout from block-buffered or unbuffered to a
1792 d_setlocale (d_setlocale.U):
1793 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1794 available to handle locale-specific ctype implementations.
1796 d_setlocale_r (d_setlocale_r.U):
1797 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1798 which indicates to the C program that the setlocale_r()
1799 routine is available.
1801 d_setnent (d_setnent.U):
1802 This variable conditionally defines HAS_SETNETENT if setnetent() is
1805 d_setnetent_r (d_setnetent_r.U):
1806 This variable conditionally defines the HAS_SETNETENT_R symbol,
1807 which indicates to the C program that the setnetent_r()
1808 routine is available.
1810 d_setpent (d_setpent.U):
1811 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1814 d_setpgid (d_setpgid.U):
1815 This variable conditionally defines the HAS_SETPGID symbol if the
1816 setpgid(pid, gpid) function is available to set process group ID.
1818 d_setpgrp (d_setpgrp.U):
1819 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1820 available to set the current process group.
1822 d_setpgrp2 (d_setpgrp2.U):
1823 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1824 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1825 is available to set the current process group.
1827 d_setprior (d_setprior.U):
1828 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1829 is available to set a process's priority.
1831 d_setproctitle (d_setproctitle.U):
1832 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1833 which indicates to the C program that the setproctitle() routine
1836 d_setprotoent_r (d_setprotoent_r.U):
1837 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1838 which indicates to the C program that the setprotoent_r()
1839 routine is available.
1841 d_setpwent (d_setpwent.U):
1842 This variable conditionally defines the HAS_SETPWENT symbol, which
1843 indicates to the C program that the setpwent() routine is available
1844 for initializing sequential access to the passwd database.
1846 d_setpwent_r (d_setpwent_r.U):
1847 This variable conditionally defines the HAS_SETPWENT_R symbol,
1848 which indicates to the C program that the setpwent_r()
1849 routine is available.
1851 d_setregid (d_setregid.U):
1852 This variable conditionally defines HAS_SETREGID if setregid() is
1853 available to change the real and effective gid of the current
1856 d_setresgid (d_setregid.U):
1857 This variable conditionally defines HAS_SETRESGID if setresgid() is
1858 available to change the real, effective and saved gid of the current
1861 d_setresuid (d_setreuid.U):
1862 This variable conditionally defines HAS_SETREUID if setresuid() is
1863 available to change the real, effective and saved uid of the current
1866 d_setreuid (d_setreuid.U):
1867 This variable conditionally defines HAS_SETREUID if setreuid() is
1868 available to change the real and effective uid of the current
1871 d_setrgid (d_setrgid.U):
1872 This variable conditionally defines the HAS_SETRGID symbol, which
1873 indicates to the C program that the setrgid() routine is available
1874 to change the real gid of the current program.
1876 d_setruid (d_setruid.U):
1877 This variable conditionally defines the HAS_SETRUID symbol, which
1878 indicates to the C program that the setruid() routine is available
1879 to change the real uid of the current program.
1881 d_setsent (d_setsent.U):
1882 This variable conditionally defines HAS_SETSERVENT if setservent() is
1885 d_setservent_r (d_setservent_r.U):
1886 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1887 which indicates to the C program that the setservent_r()
1888 routine is available.
1890 d_setsid (d_setsid.U):
1891 This variable conditionally defines HAS_SETSID if setsid() is
1892 available to set the process group ID.
1894 d_setvbuf (d_setvbuf.U):
1895 This variable conditionally defines the HAS_SETVBUF symbol, which
1896 indicates to the C program that the setvbuf() routine is available
1897 to change buffering on an open stdio stream.
1900 This variable conditionally defines the USE_SFIO symbol,
1901 and indicates whether sfio is available (and should be used).
1904 This variable conditionally defines the HAS_SHM symbol, which
1905 indicates that the entire shm*(2) library is present.
1907 d_shmat (d_shmat.U):
1908 This variable conditionally defines the HAS_SHMAT symbol, which
1909 indicates to the C program that the shmat() routine is available.
1911 d_shmatprototype (d_shmat.U):
1912 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1913 symbol, which indicates that sys/shm.h has a prototype for
1916 d_shmctl (d_shmctl.U):
1917 This variable conditionally defines the HAS_SHMCTL symbol, which
1918 indicates to the C program that the shmctl() routine is available.
1920 d_shmdt (d_shmdt.U):
1921 This variable conditionally defines the HAS_SHMDT symbol, which
1922 indicates to the C program that the shmdt() routine is available.
1924 d_shmget (d_shmget.U):
1925 This variable conditionally defines the HAS_SHMGET symbol, which
1926 indicates to the C program that the shmget() routine is available.
1928 d_sigaction (d_sigaction.U):
1929 This variable conditionally defines the HAS_SIGACTION symbol, which
1930 indicates that the Vr4 sigaction() routine is available.
1932 d_sigprocmask (d_sigprocmask.U):
1933 This variable conditionally defines HAS_SIGPROCMASK
1934 if sigprocmask() is available to examine or change the signal mask
1935 of the calling process.
1937 d_sigsetjmp (d_sigsetjmp.U):
1938 This variable conditionally defines the HAS_SIGSETJMP symbol,
1939 which indicates that the sigsetjmp() routine is available to
1940 call setjmp() and optionally save the process's signal mask.
1942 d_sitearch (sitearch.U):
1943 This variable conditionally defines SITEARCH to hold the pathname
1944 of architecture-dependent library files for $package. If
1945 $sitearch is the same as $archlib, then this is set to undef.
1947 d_snprintf (d_snprintf.U):
1948 This variable conditionally defines the HAS_SNPRINTF symbol, which
1949 indicates to the C program that the snprintf () library function
1952 d_sockatmark (d_sockatmark.U):
1953 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1954 indicates to the C program that the sockatmark() routine is available.
1956 d_sockatmarkproto (d_sockatmarkproto.U):
1957 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1958 which indicates to the C program that the system provides
1959 a prototype for the sockatmark() function. Otherwise, it is
1960 up to the program to supply one.
1962 d_socket (d_socket.U):
1963 This variable conditionally defines HAS_SOCKET, which indicates
1964 that the BSD socket interface is supported.
1966 d_socklen_t (d_socklen_t.U):
1967 This symbol will be defined if the C compiler supports socklen_t.
1969 d_sockpair (d_socket.U):
1970 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1971 indicates that the BSD socketpair() is supported.
1973 d_socks5_init (d_socks5_init.U):
1974 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1975 indicates to the C program that the socks5_init() routine is available.
1977 d_sprintf_returns_strlen (d_sprintf_len.U):
1978 This variable defines whether sprintf returns the length of the string
1979 (as per the ANSI spec). Some C libraries retain compatibility with
1980 pre-ANSI C and return a pointer to the passed in buffer; for these
1981 this variable will be undef.
1983 d_sqrtl (d_sqrtl.U):
1984 This variable conditionally defines the HAS_SQRTL symbol, which
1985 indicates to the C program that the sqrtl() routine is available.
1987 d_srand48_r (d_srand48_r.U):
1988 This variable conditionally defines the HAS_SRAND48_R symbol,
1989 which indicates to the C program that the srand48_r()
1990 routine is available.
1992 d_srandom_r (d_srandom_r.U):
1993 This variable conditionally defines the HAS_SRANDOM_R symbol,
1994 which indicates to the C program that the srandom_r()
1995 routine is available.
1997 d_sresgproto (d_sresgproto.U):
1998 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1999 which indicates to the C program that the system provides
2000 a prototype for the setresgid() function. Otherwise, it is
2001 up to the program to supply one.
2003 d_sresuproto (d_sresuproto.U):
2004 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2005 which indicates to the C program that the system provides
2006 a prototype for the setresuid() function. Otherwise, it is
2007 up to the program to supply one.
2009 d_statblks (d_statblks.U):
2010 This variable conditionally defines USE_STAT_BLOCKS
2011 if this system has a stat structure declaring
2012 st_blksize and st_blocks.
2014 d_statfs_f_flags (d_statfs_f_flags.U):
2015 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2016 symbol, which indicates to struct statfs from has f_flags member.
2017 This kind of struct statfs is coming from sys/mount.h (BSD),
2018 not from sys/statfs.h (SYSV).
2020 d_statfs_s (d_statfs_s.U):
2021 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2022 which indicates that the struct statfs is supported.
2024 d_statvfs (d_statvfs.U):
2025 This variable conditionally defines the HAS_STATVFS symbol, which
2026 indicates to the C program that the statvfs() routine is available.
2028 d_stdio_cnt_lval (d_stdstdio.U):
2029 This variable conditionally defines STDIO_CNT_LVALUE if the
2030 FILE_cnt macro can be used as an lvalue.
2032 d_stdio_ptr_lval (d_stdstdio.U):
2033 This variable conditionally defines STDIO_PTR_LVALUE if the
2034 FILE_ptr macro can be used as an lvalue.
2036 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2037 This symbol is defined if using the FILE_ptr macro as an lvalue
2038 to increase the pointer by n leaves File_cnt(fp) unchanged.
2040 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2041 This symbol is defined if using the FILE_ptr macro as an lvalue
2042 to increase the pointer by n has the side effect of decreasing the
2043 value of File_cnt(fp) by n.
2045 d_stdio_stream_array (stdio_streams.U):
2046 This variable tells whether there is an array holding
2049 d_stdiobase (d_stdstdio.U):
2050 This variable conditionally defines USE_STDIO_BASE if this system
2051 has a FILE structure declaring a usable _base field (or equivalent)
2054 d_stdstdio (d_stdstdio.U):
2055 This variable conditionally defines USE_STDIO_PTR if this system
2056 has a FILE structure declaring usable _ptr and _cnt fields (or
2057 equivalent) in stdio.h.
2059 d_strchr (d_strchr.U):
2060 This variable conditionally defines HAS_STRCHR if strchr() and
2061 strrchr() are available for string searching.
2063 d_strcoll (d_strcoll.U):
2064 This variable conditionally defines HAS_STRCOLL if strcoll() is
2065 available to compare strings using collating information.
2067 d_strctcpy (d_strctcpy.U):
2068 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2069 indicates to the C program that this C compiler knows how to copy
2072 d_strerrm (d_strerror.U):
2073 This variable holds what Strerrr is defined as to translate an error
2074 code condition into an error message string. It could be 'strerror'
2075 or a more complex macro emulating strrror with sys_errlist[], or the
2076 "unknown" string when both strerror and sys_errlist are missing.
2078 d_strerror (d_strerror.U):
2079 This variable conditionally defines HAS_STRERROR if strerror() is
2080 available to translate error numbers to strings.
2082 d_strerror_r (d_strerror_r.U):
2083 This variable conditionally defines the HAS_STRERROR_R symbol,
2084 which indicates to the C program that the strerror_r()
2085 routine is available.
2087 d_strftime (d_strftime.U):
2088 This variable conditionally defines the HAS_STRFTIME symbol, which
2089 indicates to the C program that the strftime() routine is available.
2091 d_strlcat (d_strlcat.U):
2092 This variable conditionally defines the HAS_STRLCAT symbol, which
2093 indicates to the C program that the strlcat () routine is available.
2095 d_strlcpy (d_strlcpy.U):
2096 This variable conditionally defines the HAS_STRLCPY symbol, which
2097 indicates to the C program that the strlcpy () routine is available.
2099 d_strtod (d_strtod.U):
2100 This variable conditionally defines the HAS_STRTOD symbol, which
2101 indicates to the C program that the strtod() routine is available
2102 to provide better numeric string conversion than atof().
2104 d_strtol (d_strtol.U):
2105 This variable conditionally defines the HAS_STRTOL symbol, which
2106 indicates to the C program that the strtol() routine is available
2107 to provide better numeric string conversion than atoi() and friends.
2109 d_strtold (d_strtold.U):
2110 This variable conditionally defines the HAS_STRTOLD symbol, which
2111 indicates to the C program that the strtold() routine is available.
2113 d_strtoll (d_strtoll.U):
2114 This variable conditionally defines the HAS_STRTOLL symbol, which
2115 indicates to the C program that the strtoll() routine is available.
2117 d_strtoq (d_strtoq.U):
2118 This variable conditionally defines the HAS_STRTOQ symbol, which
2119 indicates to the C program that the strtoq() routine is available.
2121 d_strtoul (d_strtoul.U):
2122 This variable conditionally defines the HAS_STRTOUL symbol, which
2123 indicates to the C program that the strtoul() routine is available
2124 to provide conversion of strings to unsigned long.
2126 d_strtoull (d_strtoull.U):
2127 This variable conditionally defines the HAS_STRTOULL symbol, which
2128 indicates to the C program that the strtoull() routine is available.
2130 d_strtouq (d_strtouq.U):
2131 This variable conditionally defines the HAS_STRTOUQ symbol, which
2132 indicates to the C program that the strtouq() routine is available.
2134 d_strxfrm (d_strxfrm.U):
2135 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2136 available to transform strings.
2138 d_suidsafe (d_dosuid.U):
2139 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2140 if setuid scripts can be secure. This test looks in /dev/fd/.
2142 d_symlink (d_symlink.U):
2143 This variable conditionally defines the HAS_SYMLINK symbol, which
2144 indicates to the C program that the symlink() routine is available
2145 to create symbolic links.
2147 d_syscall (d_syscall.U):
2148 This variable conditionally defines HAS_SYSCALL if syscall() is
2149 available call arbitrary system calls.
2151 d_syscallproto (d_syscallproto.U):
2152 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2153 which indicates to the C program that the system provides
2154 a prototype for the syscall() function. Otherwise, it is
2155 up to the program to supply one.
2157 d_sysconf (d_sysconf.U):
2158 This variable conditionally defines the HAS_SYSCONF symbol, which
2159 indicates to the C program that the sysconf() routine is available
2160 to determine system related limits and options.
2162 d_sysernlst (d_strerror.U):
2163 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2164 is available to translate error numbers to the symbolic name.
2166 d_syserrlst (d_strerror.U):
2167 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2168 available to translate error numbers to strings.
2170 d_system (d_system.U):
2171 This variable conditionally defines HAS_SYSTEM if system() is
2172 available to issue a shell command.
2174 d_tcgetpgrp (d_tcgtpgrp.U):
2175 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2176 indicates to the C program that the tcgetpgrp() routine is available.
2177 to get foreground process group ID.
2179 d_tcsetpgrp (d_tcstpgrp.U):
2180 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2181 indicates to the C program that the tcsetpgrp() routine is available
2182 to set foreground process group ID.
2184 d_telldir (d_readdir.U):
2185 This variable conditionally defines HAS_TELLDIR if telldir() is
2188 d_telldirproto (d_telldirproto.U):
2189 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2190 which indicates to the C program that the system provides
2191 a prototype for the telldir() function. Otherwise, it is
2192 up to the program to supply one.
2195 This variable conditionally defines the HAS_TIME symbol, which indicates
2196 that the time() routine exists. The time() routine is normaly
2197 provided on UNIX systems.
2199 d_times (d_times.U):
2200 This variable conditionally defines the HAS_TIMES symbol, which indicates
2201 that the times() routine exists. The times() routine is normaly
2202 provided on UNIX systems. You may have to include <sys/times.h>.
2204 d_tm_tm_gmtoff (i_time.U):
2205 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2206 indicates to the C program that the struct tm has the tm_gmtoff field.
2208 d_tm_tm_zone (i_time.U):
2209 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2210 indicates to the C program that the struct tm has the tm_zone field.
2212 d_tmpnam_r (d_tmpnam_r.U):
2213 This variable conditionally defines the HAS_TMPNAM_R symbol,
2214 which indicates to the C program that the tmpnam_r()
2215 routine is available.
2217 d_truncate (d_truncate.U):
2218 This variable conditionally defines HAS_TRUNCATE if truncate() is
2219 available to truncate files.
2221 d_ttyname_r (d_ttyname_r.U):
2222 This variable conditionally defines the HAS_TTYNAME_R symbol,
2223 which indicates to the C program that the ttyname_r()
2224 routine is available.
2226 d_tzname (d_tzname.U):
2227 This variable conditionally defines HAS_TZNAME if tzname[] is
2228 available to access timezone names.
2230 d_u32align (d_u32align.U):
2231 This variable tells whether you must access character data
2232 through U32-aligned pointers.
2234 d_ualarm (d_ualarm.U):
2235 This variable conditionally defines the HAS_UALARM symbol, which
2236 indicates to the C program that the ualarm() routine is available.
2238 d_umask (d_umask.U):
2239 This variable conditionally defines the HAS_UMASK symbol, which
2240 indicates to the C program that the umask() routine is available.
2241 to set and get the value of the file creation mask.
2243 d_uname (d_gethname.U):
2244 This variable conditionally defines the HAS_UNAME symbol, which
2245 indicates to the C program that the uname() routine may be
2246 used to derive the host name.
2248 d_union_semun (d_union_semun.U):
2249 This variable conditionally defines HAS_UNION_SEMUN if the
2250 union semun is defined by including <sys/sem.h>.
2252 d_unordered (d_unordered.U):
2253 This variable conditionally defines the HAS_UNORDERED symbol, which
2254 indicates to the C program that the unordered() routine is available.
2256 d_unsetenv (d_unsetenv.U):
2257 This variable conditionally defines the HAS_UNSETENV symbol, which
2258 indicates to the C program that the unsetenv () routine is available.
2260 d_usleep (d_usleep.U):
2261 This variable conditionally defines HAS_USLEEP if usleep() is
2262 available to do high granularity sleeps.
2264 d_usleepproto (d_usleepproto.U):
2265 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2266 which indicates to the C program that the system provides
2267 a prototype for the usleep() function. Otherwise, it is
2268 up to the program to supply one.
2270 d_ustat (d_ustat.U):
2271 This variable conditionally defines HAS_USTAT if ustat() is
2272 available to query file system statistics by dev_t.
2274 d_vendorarch (vendorarch.U):
2275 This variable conditionally defined PERL_VENDORARCH.
2277 d_vendorbin (vendorbin.U):
2278 This variable conditionally defines PERL_VENDORBIN.
2280 d_vendorlib (vendorlib.U):
2281 This variable conditionally defines PERL_VENDORLIB.
2283 d_vendorscript (vendorscript.U):
2284 This variable conditionally defines PERL_VENDORSCRIPT.
2286 d_vfork (d_vfork.U):
2287 This variable conditionally defines the HAS_VFORK symbol, which
2288 indicates the vfork() routine is available.
2290 d_void_closedir (d_closedir.U):
2291 This variable conditionally defines VOID_CLOSEDIR if closedir()
2292 does not return a value.
2294 d_voidsig (d_voidsig.U):
2295 This variable conditionally defines VOIDSIG if this system
2296 declares "void (*signal(...))()" in signal.h. The old way was to
2297 declare it as "int (*signal(...))()".
2299 d_voidtty (i_sysioctl.U):
2300 This variable conditionally defines USE_IOCNOTTY to indicate that the
2301 ioctl() call with TIOCNOTTY should be used to void tty association.
2302 Otherwise (on USG probably), it is enough to close the standard file
2303 decriptors and do a setpgrp().
2305 d_volatile (d_volatile.U):
2306 This variable conditionally defines the HASVOLATILE symbol, which
2307 indicates to the C program that this C compiler knows about the
2308 volatile declaration.
2310 d_vprintf (d_vprintf.U):
2311 This variable conditionally defines the HAS_VPRINTF symbol, which
2312 indicates to the C program that the vprintf() routine is available
2313 to printf with a pointer to an argument list.
2315 d_vsnprintf (d_snprintf.U):
2316 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2317 indicates to the C program that the vsnprintf () library function
2320 d_wait4 (d_wait4.U):
2321 This variable conditionally defines the HAS_WAIT4 symbol, which
2322 indicates the wait4() routine is available.
2324 d_waitpid (d_waitpid.U):
2325 This variable conditionally defines HAS_WAITPID if waitpid() is
2326 available to wait for child process.
2328 d_wcstombs (d_wcstombs.U):
2329 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2330 indicates to the C program that the wcstombs() routine is available
2331 to convert wide character strings to multibyte strings.
2333 d_wctomb (d_wctomb.U):
2334 This variable conditionally defines the HAS_WCTOMB symbol, which
2335 indicates to the C program that the wctomb() routine is available
2336 to convert a wide character to a multibyte.
2338 d_writev (d_writev.U):
2339 This variable conditionally defines the HAS_WRITEV symbol, which
2340 indicates to the C program that the writev() routine is available.
2343 This variable conditionally defines the symbol XENIX, which alerts
2344 the C program that it runs under Xenix.
2347 This variable is used internally by Configure to determine the
2348 full pathname (if any) of the date program. After Configure runs,
2349 the value is reset to a plain "date" and is not useful.
2351 db_hashtype (i_db.U):
2352 This variable contains the type of the hash structure element
2353 in the <db.h> header file. In older versions of DB, it was
2354 int, while in newer ones it is u_int32_t.
2356 db_prefixtype (i_db.U):
2357 This variable contains the type of the prefix structure element
2358 in the <db.h> header file. In older versions of DB, it was
2359 int, while in newer ones it is size_t.
2361 db_version_major (i_db.U):
2362 This variable contains the major version number of
2363 Berkeley DB found in the <db.h> header file.
2365 db_version_minor (i_db.U):
2366 This variable contains the minor version number of
2367 Berkeley DB found in the <db.h> header file.
2368 For DB version 1 this is always 0.
2370 db_version_patch (i_db.U):
2371 This variable contains the patch version number of
2372 Berkeley DB found in the <db.h> header file.
2373 For DB version 1 this is always 0.
2375 defvoidused (voidflags.U):
2376 This variable contains the default value of the VOIDUSED symbol (15).
2378 direntrytype (i_dirent.U):
2379 This symbol is set to 'struct direct' or 'struct dirent' depending on
2380 whether dirent is available or not. You should use this pseudo type to
2381 portably declare your directory entries.
2384 This variable contains the extension that is to be used for the
2385 dynamically loaded modules that perl generaties.
2388 This variable contains the name of the dynamic loading file that
2389 will be used with the package.
2391 doublesize (doublesize.U):
2392 This variable contains the value of the DOUBLESIZE symbol, which
2393 indicates to the C program how many bytes there are in a double.
2395 drand01 (randfunc.U):
2396 Indicates the macro to be used to generate normalized
2397 random numbers. Uses randfunc, often divided by
2398 (double) (((unsigned long) 1 << randbits)) in order to
2399 normalize the result.
2400 In C programs, the macro 'Drand01' is mapped to drand01.
2402 drand48_r_proto (d_drand48_r.U):
2403 This variable encodes the prototype of drand48_r.
2404 It is zero if d_drand48_r is undef, and one of the
2405 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2408 dynamic_ext (Extensions.U):
2409 This variable holds a list of XS extension files we want to
2410 link dynamically into the package. It is used by Makefile.
2412 eagain (nblock_io.U):
2413 This variable bears the symbolic errno code set by read() when no
2414 data is present on the file and non-blocking I/O was enabled (otherwise,
2415 read() blocks naturally).
2418 This variable conditionally defines EBCDIC if this
2419 system uses EBCDIC encoding. Among other things, this
2420 means that the character ranges are not contiguous.
2424 This variable is used internally by Configure to determine the
2425 full pathname (if any) of the echo program. After Configure runs,
2426 the value is reset to a plain "echo" and is not useful.
2429 This variable is used internally by Configure to determine the
2430 full pathname (if any) of the egrep program. After Configure runs,
2431 the value is reset to a plain "egrep" and is not useful.
2434 This variable is defined but not used by Configure.
2435 The value is a plain '' and is not useful.
2437 endgrent_r_proto (d_endgrent_r.U):
2438 This variable encodes the prototype of endgrent_r.
2439 It is zero if d_endgrent_r is undef, and one of the
2440 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2443 endhostent_r_proto (d_endhostent_r.U):
2444 This variable encodes the prototype of endhostent_r.
2445 It is zero if d_endhostent_r is undef, and one of the
2446 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2449 endnetent_r_proto (d_endnetent_r.U):
2450 This variable encodes the prototype of endnetent_r.
2451 It is zero if d_endnetent_r is undef, and one of the
2452 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2455 endprotoent_r_proto (d_endprotoent_r.U):
2456 This variable encodes the prototype of endprotoent_r.
2457 It is zero if d_endprotoent_r is undef, and one of the
2458 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2461 endpwent_r_proto (d_endpwent_r.U):
2462 This variable encodes the prototype of endpwent_r.
2463 It is zero if d_endpwent_r is undef, and one of the
2464 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2467 endservent_r_proto (d_endservent_r.U):
2468 This variable encodes the prototype of endservent_r.
2469 It is zero if d_endservent_r is undef, and one of the
2470 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2474 When running under Eunice this variable contains a command which will
2475 convert a shell script to the proper form of text file for it to be
2476 executable by the shell. On other systems it is a no-op.
2479 This is an old synonym for _exe.
2482 This variable is used internally by Configure to determine the
2483 full pathname (if any) of the expr program. After Configure runs,
2484 the value is reset to a plain "expr" and is not useful.
2486 extensions (Extensions.U):
2487 This variable holds a list of all extension files (both XS and
2488 non-xs linked into the package. It is propagated to Config.pm
2489 and is typically used to test whether a particular extesion
2493 This variable holds a list of extra modules to install.
2495 fflushall (fflushall.U):
2496 This symbol, if defined, tells that to flush
2497 all pending stdio output one must loop through all
2498 the stdio file handles stored in an array and fflush them.
2499 Note that if fflushNULL is defined, fflushall will not
2500 even be probed for and will be left undefined.
2502 fflushNULL (fflushall.U):
2503 This symbol, if defined, tells that fflush(NULL) does flush
2504 all pending stdio output.
2507 This variable is defined but not used by Configure.
2508 The value is a plain '' and is not useful.
2510 firstmakefile (Unix.U):
2511 This variable defines the first file searched by make. On unix,
2512 it is makefile (then Makefile). On case-insensitive systems,
2513 it might be something else. This is only used to deal with
2514 convoluted make depend tricks.
2517 This variable is defined but not used by Configure.
2518 The value is a plain '' and is not useful.
2520 fpossize (fpossize.U):
2521 This variable contains the size of a fpostype in bytes.
2523 fpostype (fpostype.U):
2524 This variable defines Fpos_t to be something like fpos_t, long,
2525 uint, or whatever type is used to declare file positions in libc.
2527 freetype (mallocsrc.U):
2528 This variable contains the return type of free(). It is usually
2529 void, but occasionally int.
2532 This variable contains the command used by Configure
2533 to copy files from the target host. Useful and available
2534 only during Perl build.
2535 The string ':' if not cross-compiling.
2538 This variable contains the full pathname to 'ar', whether or
2539 not the user has specified 'portability'. This is only used
2543 This variable contains the full pathname to 'csh', whether or
2544 not the user has specified 'portability'. This is only used
2545 in the compiled C program, and we assume that all systems which
2546 can share this executable will have the same full pathname to
2549 full_sed (Loc_sed.U):
2550 This variable contains the full pathname to 'sed', whether or
2551 not the user has specified 'portability'. This is only used
2552 in the compiled C program, and we assume that all systems which
2553 can share this executable will have the same full pathname to
2556 gccansipedantic (gccvers.U):
2557 If GNU cc (gcc) is used, this variable will enable (if set) the
2558 -ansi and -pedantic ccflags for building core files (through
2559 cflags script). (See Porting/pumpkin.pod for full description).
2561 gccosandvers (gccvers.U):
2562 If GNU cc (gcc) is used, this variable holds the operating system
2563 and version used to compile gcc. It is set to '' if not gcc,
2564 or if nothing useful can be parsed as the os version.
2566 gccversion (gccvers.U):
2567 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2568 indicate whether the compiler is version 1 or 2. This is used in
2569 setting some of the default cflags. It is set to '' if not gcc.
2571 getgrent_r_proto (d_getgrent_r.U):
2572 This variable encodes the prototype of getgrent_r.
2573 It is zero if d_getgrent_r is undef, and one of the
2574 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2577 getgrgid_r_proto (d_getgrgid_r.U):
2578 This variable encodes the prototype of getgrgid_r.
2579 It is zero if d_getgrgid_r is undef, and one of the
2580 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2583 getgrnam_r_proto (d_getgrnam_r.U):
2584 This variable encodes the prototype of getgrnam_r.
2585 It is zero if d_getgrnam_r is undef, and one of the
2586 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2589 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2590 This variable encodes the prototype of gethostbyaddr_r.
2591 It is zero if d_gethostbyaddr_r is undef, and one of the
2592 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2595 gethostbyname_r_proto (d_gethostbyname_r.U):
2596 This variable encodes the prototype of gethostbyname_r.
2597 It is zero if d_gethostbyname_r is undef, and one of the
2598 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2601 gethostent_r_proto (d_gethostent_r.U):
2602 This variable encodes the prototype of gethostent_r.
2603 It is zero if d_gethostent_r is undef, and one of the
2604 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2607 getlogin_r_proto (d_getlogin_r.U):
2608 This variable encodes the prototype of getlogin_r.
2609 It is zero if d_getlogin_r is undef, and one of the
2610 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2613 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2614 This variable encodes the prototype of getnetbyaddr_r.
2615 It is zero if d_getnetbyaddr_r is undef, and one of the
2616 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2619 getnetbyname_r_proto (d_getnetbyname_r.U):
2620 This variable encodes the prototype of getnetbyname_r.
2621 It is zero if d_getnetbyname_r is undef, and one of the
2622 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2625 getnetent_r_proto (d_getnetent_r.U):
2626 This variable encodes the prototype of getnetent_r.
2627 It is zero if d_getnetent_r is undef, and one of the
2628 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2631 getprotobyname_r_proto (d_getprotobyname_r.U):
2632 This variable encodes the prototype of getprotobyname_r.
2633 It is zero if d_getprotobyname_r is undef, and one of the
2634 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2637 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2638 This variable encodes the prototype of getprotobynumber_r.
2639 It is zero if d_getprotobynumber_r is undef, and one of the
2640 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2643 getprotoent_r_proto (d_getprotoent_r.U):
2644 This variable encodes the prototype of getprotoent_r.
2645 It is zero if d_getprotoent_r is undef, and one of the
2646 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2649 getpwent_r_proto (d_getpwent_r.U):
2650 This variable encodes the prototype of getpwent_r.
2651 It is zero if d_getpwent_r is undef, and one of the
2652 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2655 getpwnam_r_proto (d_getpwnam_r.U):
2656 This variable encodes the prototype of getpwnam_r.
2657 It is zero if d_getpwnam_r is undef, and one of the
2658 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2661 getpwuid_r_proto (d_getpwuid_r.U):
2662 This variable encodes the prototype of getpwuid_r.
2663 It is zero if d_getpwuid_r is undef, and one of the
2664 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2667 getservbyname_r_proto (d_getservbyname_r.U):
2668 This variable encodes the prototype of getservbyname_r.
2669 It is zero if d_getservbyname_r is undef, and one of the
2670 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2673 getservbyport_r_proto (d_getservbyport_r.U):
2674 This variable encodes the prototype of getservbyport_r.
2675 It is zero if d_getservbyport_r is undef, and one of the
2676 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2679 getservent_r_proto (d_getservent_r.U):
2680 This variable encodes the prototype of getservent_r.
2681 It is zero if d_getservent_r is undef, and one of the
2682 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2685 getspnam_r_proto (d_getspnam_r.U):
2686 This variable encodes the prototype of getspnam_r.
2687 It is zero if d_getspnam_r is undef, and one of the
2688 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2692 This variable contains the format string used for printing a Gid_t.
2694 gidsign (gidsign.U):
2695 This variable contains the signedness of a gidtype.
2696 1 for unsigned, -1 for signed.
2698 gidsize (gidsize.U):
2699 This variable contains the size of a gidtype in bytes.
2701 gidtype (gidtype.U):
2702 This variable defines Gid_t to be something like gid_t, int,
2703 ushort, or whatever type is used to declare the return type
2704 of getgid(). Typically, it is the type of group ids in the kernel.
2707 This variable holds the general path (space-separated) used to
2708 find libraries. It may contain directories that do not exist on
2709 this platform, libpth is the cleaned-up version.
2712 This variable is used internally by Configure to determine the
2713 full pathname (if any) of the gmake program. After Configure runs,
2714 the value is reset to a plain "gmake" and is not useful.
2716 gmtime_r_proto (d_gmtime_r.U):
2717 This variable encodes the prototype of gmtime_r.
2718 It is zero if d_gmtime_r is undef, and one of the
2719 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2722 gnulibc_version (d_gnulibc.U):
2723 This variable contains the version number of the GNU C library.
2724 It is usually something like '2.2.5'. It is a plain '' if this
2725 is not the GNU C library, or if the version is unknown.
2728 This variable is used internally by Configure to determine the
2729 full pathname (if any) of the grep program. After Configure runs,
2730 the value is reset to a plain "grep" and is not useful.
2733 This variable contains a command that produces the text of the
2734 /etc/group file. This is normally "cat /etc/group", but can be
2735 "ypcat group" when NIS is used.
2736 On some systems, such as os390, there may be no equivalent
2737 command, in which case this variable is unset.
2739 groupstype (groupstype.U):
2740 This variable defines Groups_t to be something like gid_t, int,
2741 ushort, or whatever type is used for the second argument to
2742 getgroups() and setgroups(). Usually, this is the same as
2743 gidtype (gid_t), but sometimes it isn't.
2746 This variable is used internally by Configure to determine the
2747 full pathname (if any) of the gzip program. After Configure runs,
2748 the value is reset to a plain "gzip" and is not useful.
2750 h_fcntl (h_fcntl.U):
2751 This is variable gets set in various places to tell i_fcntl that
2752 <fcntl.h> should be included.
2754 h_sysfile (h_sysfile.U):
2755 This is variable gets set in various places to tell i_sys_file that
2756 <sys/file.h> should be included.
2759 Gives the type of hints used for previous answers. May be one of
2760 "default", "recommended" or "previous".
2763 This variable contains a command that produces the text of the
2764 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2765 "ypcat hosts" when NIS is used.
2766 On some systems, such as os390, there may be no equivalent
2767 command, in which case this variable is unset.
2769 html1dir (html1dir.U):
2770 This variable contains the name of the directory in which html
2771 source pages are to be put. This directory is for pages
2772 that describe whole programs, not libraries or modules. It
2773 is intended to correspond roughly to section 1 of the Unix
2776 html1direxp (html1dir.U):
2777 This variable is the same as the html1dir variable, but is filename
2778 expanded at configuration time, for convenient use in makefiles.
2780 html3dir (html3dir.U):
2781 This variable contains the name of the directory in which html
2782 source pages are to be put. This directory is for pages
2783 that describe libraries or modules. It is intended to
2784 correspond roughly to section 3 of the Unix manuals.
2786 html3direxp (html3dir.U):
2787 This variable is the same as the html3dir variable, but is filename
2788 expanded at configuration time, for convenient use in makefiles.
2791 This variable is the size of an I16 in bytes.
2794 This variable contains the C type used for Perl's I16.
2797 This variable is the size of an I32 in bytes.
2800 This variable contains the C type used for Perl's I32.
2803 This variable is the size of an I64 in bytes.
2806 This variable contains the C type used for Perl's I64.
2809 This variable is the size of an I8 in bytes.
2812 This variable contains the C type used for Perl's I8.
2814 i_arpainet (i_arpainet.U):
2815 This variable conditionally defines the I_ARPA_INET symbol,
2816 and indicates whether a C program should include <arpa/inet.h>.
2818 i_bsdioctl (i_sysioctl.U):
2819 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2820 indicates to the C program that <sys/bsdioctl.h> exists and should
2823 i_crypt (i_crypt.U):
2824 This variable conditionally defines the I_CRYPT symbol, and indicates
2825 whether a C program should include <crypt.h>.
2828 This variable conditionally defines the I_DB symbol, and indicates
2829 whether a C program may include Berkeley's DB include file <db.h>.
2832 This variable conditionally defines the I_DBM symbol, which
2833 indicates to the C program that <dbm.h> exists and should
2836 i_dirent (i_dirent.U):
2837 This variable conditionally defines I_DIRENT, which indicates
2838 to the C program that it should include <dirent.h>.
2841 This variable conditionally defines the I_DLD symbol, which
2842 indicates to the C program that <dld.h> (GNU dynamic loading)
2843 exists and should be included.
2845 i_dlfcn (i_dlfcn.U):
2846 This variable conditionally defines the I_DLFCN symbol, which
2847 indicates to the C program that <dlfcn.h> exists and should
2850 i_fcntl (i_fcntl.U):
2851 This variable controls the value of I_FCNTL (which tells
2852 the C program to include <fcntl.h>).
2854 i_float (i_float.U):
2855 This variable conditionally defines the I_FLOAT symbol, and indicates
2856 whether a C program may include <float.h> to get symbols like DBL_MAX
2857 or DBL_MIN, i.e. machine dependent floating point values.
2860 This variable conditionally defines the I_FP symbol, and indicates
2861 whether a C program should include <fp.h>.
2863 i_fp_class (i_fp_class.U):
2864 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2865 whether a C program should include <fp_class.h>.
2868 This variable conditionally defines the I_GDBM symbol, which
2869 indicates to the C program that <gdbm.h> exists and should
2873 This variable conditionally defines the I_GRP symbol, and indicates
2874 whether a C program should include <grp.h>.
2876 i_ieeefp (i_ieeefp.U):
2877 This variable conditionally defines the I_IEEEFP symbol, and indicates
2878 whether a C program should include <ieeefp.h>.
2880 i_inttypes (i_inttypes.U):
2881 This variable conditionally defines the I_INTTYPES symbol,
2882 and indicates whether a C program should include <inttypes.h>.
2884 i_langinfo (i_langinfo.U):
2885 This variable conditionally defines the I_LANGINFO symbol,
2886 and indicates whether a C program should include <langinfo.h>.
2888 i_libutil (i_libutil.U):
2889 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2890 whether a C program should include <libutil.h>.
2892 i_limits (i_limits.U):
2893 This variable conditionally defines the I_LIMITS symbol, and indicates
2894 whether a C program may include <limits.h> to get symbols like WORD_BIT
2897 i_locale (i_locale.U):
2898 This variable conditionally defines the I_LOCALE symbol,
2899 and indicates whether a C program should include <locale.h>.
2901 i_machcthr (i_machcthr.U):
2902 This variable conditionally defines the I_MACH_CTHREADS symbol,
2903 and indicates whether a C program should include <mach/cthreads.h>.
2905 i_malloc (i_malloc.U):
2906 This variable conditionally defines the I_MALLOC symbol, and indicates
2907 whether a C program should include <malloc.h>.
2910 This variable conditionally defines the I_MATH symbol, and indicates
2911 whether a C program may include <math.h>.
2913 i_memory (i_memory.U):
2914 This variable conditionally defines the I_MEMORY symbol, and indicates
2915 whether a C program should include <memory.h>.
2917 i_mntent (i_mntent.U):
2918 This variable conditionally defines the I_MNTENT symbol, and indicates
2919 whether a C program should include <mntent.h>.
2922 This variable conditionally defines the I_NDBM symbol, which
2923 indicates to the C program that <ndbm.h> exists and should
2926 i_netdb (i_netdb.U):
2927 This variable conditionally defines the I_NETDB symbol, and indicates
2928 whether a C program should include <netdb.h>.
2930 i_neterrno (i_neterrno.U):
2931 This variable conditionally defines the I_NET_ERRNO symbol, which
2932 indicates to the C program that <net/errno.h> exists and should
2935 i_netinettcp (i_netinettcp.U):
2936 This variable conditionally defines the I_NETINET_TCP symbol,
2937 and indicates whether a C program should include <netinet/tcp.h>.
2940 This variable conditionally defines I_NETINET_IN, which indicates
2941 to the C program that it should include <netinet/in.h>. Otherwise,
2942 you may try <sys/in.h>.
2945 This variable conditionally defines the I_POLL symbol, and indicates
2946 whether a C program should include <poll.h>.
2949 This variable conditionally defines the I_PROT symbol, and indicates
2950 whether a C program should include <prot.h>.
2952 i_pthread (i_pthread.U):
2953 This variable conditionally defines the I_PTHREAD symbol,
2954 and indicates whether a C program should include <pthread.h>.
2957 This variable conditionally defines I_PWD, which indicates
2958 to the C program that it should include <pwd.h>.
2960 i_rpcsvcdbm (i_dbm.U):
2961 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2962 indicates to the C program that <rpcsvc/dbm.h> exists and should
2963 be included. Some System V systems might need this instead of <dbm.h>.
2966 This variable conditionally defines the I_SFIO symbol,
2967 and indicates whether a C program should include <sfio.h>.
2969 i_sgtty (i_termio.U):
2970 This variable conditionally defines the I_SGTTY symbol, which
2971 indicates to the C program that it should include <sgtty.h> rather
2974 i_shadow (i_shadow.U):
2975 This variable conditionally defines the I_SHADOW symbol, and indicates
2976 whether a C program should include <shadow.h>.
2978 i_socks (i_socks.U):
2979 This variable conditionally defines the I_SOCKS symbol, and indicates
2980 whether a C program should include <socks.h>.
2982 i_stdarg (i_varhdr.U):
2983 This variable conditionally defines the I_STDARG symbol, which
2984 indicates to the C program that <stdarg.h> exists and should
2987 i_stddef (i_stddef.U):
2988 This variable conditionally defines the I_STDDEF symbol, which
2989 indicates to the C program that <stddef.h> exists and should
2992 i_stdlib (i_stdlib.U):
2993 This variable conditionally defines the I_STDLIB symbol, which
2994 indicates to the C program that <stdlib.h> exists and should
2997 i_string (i_string.U):
2998 This variable conditionally defines the I_STRING symbol, which
2999 indicates that <string.h> should be included rather than <strings.h>.
3001 i_sunmath (i_sunmath.U):
3002 This variable conditionally defines the I_SUNMATH symbol, and indicates
3003 whether a C program should include <sunmath.h>.
3005 i_sysaccess (i_sysaccess.U):
3006 This variable conditionally defines the I_SYS_ACCESS symbol,
3007 and indicates whether a C program should include <sys/access.h>.
3009 i_sysdir (i_sysdir.U):
3010 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3011 whether a C program should include <sys/dir.h>.
3013 i_sysfile (i_sysfile.U):
3014 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3015 whether a C program should include <sys/file.h> to get R_OK and friends.
3017 i_sysfilio (i_sysioctl.U):
3018 This variable conditionally defines the I_SYS_FILIO symbol, which
3019 indicates to the C program that <sys/filio.h> exists and should
3020 be included in preference to <sys/ioctl.h>.
3023 This variable conditionally defines I_SYS_IN, which indicates
3024 to the C program that it should include <sys/in.h> instead of
3027 i_sysioctl (i_sysioctl.U):
3028 This variable conditionally defines the I_SYS_IOCTL symbol, which
3029 indicates to the C program that <sys/ioctl.h> exists and should
3032 i_syslog (i_syslog.U):
3033 This variable conditionally defines the I_SYSLOG symbol,
3034 and indicates whether a C program should include <syslog.h>.
3036 i_sysmman (i_sysmman.U):
3037 This variable conditionally defines the I_SYS_MMAN symbol, and
3038 indicates whether a C program should include <sys/mman.h>.
3040 i_sysmode (i_sysmode.U):
3041 This variable conditionally defines the I_SYSMODE symbol,
3042 and indicates whether a C program should include <sys/mode.h>.
3044 i_sysmount (i_sysmount.U):
3045 This variable conditionally defines the I_SYSMOUNT symbol,
3046 and indicates whether a C program should include <sys/mount.h>.
3048 i_sysndir (i_sysndir.U):
3049 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3050 whether a C program should include <sys/ndir.h>.
3052 i_sysparam (i_sysparam.U):
3053 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3054 whether a C program should include <sys/param.h>.
3056 i_sysresrc (i_sysresrc.U):
3057 This variable conditionally defines the I_SYS_RESOURCE symbol,
3058 and indicates whether a C program should include <sys/resource.h>.
3060 i_syssecrt (i_syssecrt.U):
3061 This variable conditionally defines the I_SYS_SECURITY symbol,
3062 and indicates whether a C program should include <sys/security.h>.
3064 i_sysselct (i_sysselct.U):
3065 This variable conditionally defines I_SYS_SELECT, which indicates
3066 to the C program that it should include <sys/select.h> in order to
3067 get the definition of struct timeval.
3069 i_syssockio (i_sysioctl.U):
3070 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3071 C program that socket ioctl codes may be found in <sys/sockio.h>
3072 instead of <sys/ioctl.h>.
3074 i_sysstat (i_sysstat.U):
3075 This variable conditionally defines the I_SYS_STAT symbol,
3076 and indicates whether a C program should include <sys/stat.h>.
3078 i_sysstatfs (i_sysstatfs.U):
3079 This variable conditionally defines the I_SYSSTATFS symbol,
3080 and indicates whether a C program should include <sys/statfs.h>.
3082 i_sysstatvfs (i_sysstatvfs.U):
3083 This variable conditionally defines the I_SYSSTATVFS symbol,
3084 and indicates whether a C program should include <sys/statvfs.h>.
3086 i_systime (i_time.U):
3087 This variable conditionally defines I_SYS_TIME, which indicates
3088 to the C program that it should include <sys/time.h>.
3090 i_systimek (i_time.U):
3091 This variable conditionally defines I_SYS_TIME_KERNEL, which
3092 indicates to the C program that it should include <sys/time.h>
3093 with KERNEL defined.
3095 i_systimes (i_systimes.U):
3096 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3097 whether a C program should include <sys/times.h>.
3099 i_systypes (i_systypes.U):
3100 This variable conditionally defines the I_SYS_TYPES symbol,
3101 and indicates whether a C program should include <sys/types.h>.
3103 i_sysuio (i_sysuio.U):
3104 This variable conditionally defines the I_SYSUIO symbol, and indicates
3105 whether a C program should include <sys/uio.h>.
3107 i_sysun (i_sysun.U):
3108 This variable conditionally defines I_SYS_UN, which indicates
3109 to the C program that it should include <sys/un.h> to get UNIX
3110 domain socket definitions.
3112 i_sysutsname (i_sysutsname.U):
3113 This variable conditionally defines the I_SYSUTSNAME symbol,
3114 and indicates whether a C program should include <sys/utsname.h>.
3116 i_sysvfs (i_sysvfs.U):
3117 This variable conditionally defines the I_SYSVFS symbol,
3118 and indicates whether a C program should include <sys/vfs.h>.
3120 i_syswait (i_syswait.U):
3121 This variable conditionally defines I_SYS_WAIT, which indicates
3122 to the C program that it should include <sys/wait.h>.
3124 i_termio (i_termio.U):
3125 This variable conditionally defines the I_TERMIO symbol, which
3126 indicates to the C program that it should include <termio.h> rather
3129 i_termios (i_termio.U):
3130 This variable conditionally defines the I_TERMIOS symbol, which
3131 indicates to the C program that the POSIX <termios.h> file is
3135 This variable conditionally defines I_TIME, which indicates
3136 to the C program that it should include <time.h>.
3138 i_unistd (i_unistd.U):
3139 This variable conditionally defines the I_UNISTD symbol, and indicates
3140 whether a C program should include <unistd.h>.
3142 i_ustat (i_ustat.U):
3143 This variable conditionally defines the I_USTAT symbol, and indicates
3144 whether a C program should include <ustat.h>.
3146 i_utime (i_utime.U):
3147 This variable conditionally defines the I_UTIME symbol, and indicates
3148 whether a C program should include <utime.h>.
3150 i_values (i_values.U):
3151 This variable conditionally defines the I_VALUES symbol, and indicates
3152 whether a C program may include <values.h> to get symbols like MAXLONG
3155 i_varargs (i_varhdr.U):
3156 This variable conditionally defines I_VARARGS, which indicates
3157 to the C program that it should include <varargs.h>.
3159 i_varhdr (i_varhdr.U):
3160 Contains the name of the header to be included to get va_dcl definition.
3161 Typically one of varargs.h or stdarg.h.
3163 i_vfork (i_vfork.U):
3164 This variable conditionally defines the I_VFORK symbol, and indicates
3165 whether a C program should include vfork.h.
3167 ignore_versioned_solibs (libs.U):
3168 This variable should be non-empty if non-versioned shared
3169 libraries (libfoo.so.x.y) are to be ignored (because they
3170 cannot be linked against).
3172 inc_version_list (inc_version_list.U):
3173 This variable specifies the list of subdirectories in over
3174 which perl.c:incpush() and lib/lib.pm will automatically
3175 search when adding directories to @INC. The elements in
3176 the list are separated by spaces. This is only useful
3177 if you have a perl library directory tree structured like the
3178 default one. See INSTALL for how this works. The versioned
3179 site_perl directory was introduced in 5.005, so that is the
3180 lowest possible value.
3182 This list includes architecture-dependent directories back to
3183 version $api_versionstring (e.g. 5.5.640) and
3184 architecture-independent directories all the way back to
3187 inc_version_list_init (inc_version_list.U):
3188 This variable holds the same list as inc_version_list, but
3189 each item is enclosed in double quotes and separated by commas,
3190 suitable for use in the PERL_INC_VERSION_LIST initialization.
3193 This variable must preceed the normal include path to get hte
3194 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3195 Value can be "" or "/bsd43" on mips.
3198 This variable is defined but not used by Configure.
3199 The value is a plain '' and is not useful.
3201 initialinstalllocation (bin.U):
3202 When userelocatableinc is true, this variable holds the location
3203 that make install should copy the perl binary to, with all the
3204 run-time relocatable paths calculated from this at install time.
3205 When used, it is initialised to the original value of binexp, and
3206 then binexp is set to '.../', as the other binaries are found
3207 relative to the perl binary.
3209 installarchlib (archlib.U):
3210 This variable is really the same as archlibexp but may differ on
3211 those systems using AFS. For extra portability, only this variable
3212 should be used in makefiles.
3215 This variable is the same as binexp unless AFS is running in which case
3216 the user is explicitely prompted for it. This variable should always
3217 be used in your makefiles for maximum portability.
3219 installhtml1dir (html1dir.U):
3220 This variable is really the same as html1direxp, unless you are
3221 using a different installprefix. For extra portability, you
3222 should only use this variable within your makefiles.
3224 installhtml3dir (html3dir.U):
3225 This variable is really the same as html3direxp, unless you are
3226 using a different installprefix. For extra portability, you
3227 should only use this variable within your makefiles.
3229 installman1dir (man1dir.U):
3230 This variable is really the same as man1direxp, unless you are using
3231 AFS in which case it points to the read/write location whereas
3232 man1direxp only points to the read-only access location. For extra
3233 portability, you should only use this variable within your makefiles.
3235 installman3dir (man3dir.U):
3236 This variable is really the same as man3direxp, unless you are using
3237 AFS in which case it points to the read/write location whereas
3238 man3direxp only points to the read-only access location. For extra
3239 portability, you should only use this variable within your makefiles.
3241 installprefix (installprefix.U):
3242 This variable holds the name of the directory below which
3243 "make install" will install the package. For most users, this
3244 is the same as prefix. However, it is useful for
3245 installing the software into a different (usually temporary)
3246 location after which it can be bundled up and moved somehow
3247 to the final location specified by prefix.
3249 installprefixexp (installprefix.U):
3250 This variable holds the full absolute path of installprefix
3251 with all ~-expansion done.
3253 installprivlib (privlib.U):
3254 This variable is really the same as privlibexp but may differ on
3255 those systems using AFS. For extra portability, only this variable
3256 should be used in makefiles.
3258 installscript (scriptdir.U):
3259 This variable is usually the same as scriptdirexp, unless you are on
3260 a system running AFS, in which case they may differ slightly. You
3261 should always use this variable within your makefiles for portability.
3263 installsitearch (sitearch.U):
3264 This variable is really the same as sitearchexp but may differ on
3265 those systems using AFS. For extra portability, only this variable
3266 should be used in makefiles.
3268 installsitebin (sitebin.U):
3269 This variable is usually the same as sitebinexp, unless you are on
3270 a system running AFS, in which case they may differ slightly. You
3271 should always use this variable within your makefiles for portability.
3273 installsitehtml1dir (sitehtml1dir.U):
3274 This variable is really the same as sitehtml1direxp, unless you are using
3275 AFS in which case it points to the read/write location whereas
3276 html1direxp only points to the read-only access location. For extra
3277 portability, you should only use this variable within your makefiles.
3279 installsitehtml3dir (sitehtml3dir.U):
3280 This variable is really the same as sitehtml3direxp, unless you are using
3281 AFS in which case it points to the read/write location whereas
3282 html3direxp only points to the read-only access location. For extra
3283 portability, you should only use this variable within your makefiles.
3285 installsitelib (sitelib.U):
3286 This variable is really the same as sitelibexp but may differ on
3287 those systems using AFS. For extra portability, only this variable
3288 should be used in makefiles.
3290 installsiteman1dir (siteman1dir.U):
3291 This variable is really the same as siteman1direxp, unless you are using
3292 AFS in which case it points to the read/write location whereas
3293 man1direxp only points to the read-only access location. For extra
3294 portability, you should only use this variable within your makefiles.
3296 installsiteman3dir (siteman3dir.U):
3297 This variable is really the same as siteman3direxp, unless you are using
3298 AFS in which case it points to the read/write location whereas
3299 man3direxp only points to the read-only access location. For extra
3300 portability, you should only use this variable within your makefiles.
3302 installsitescript (sitescript.U):
3303 This variable is usually the same as sitescriptexp, unless you are on
3304 a system running AFS, in which case they may differ slightly. You
3305 should always use this variable within your makefiles for portability.
3307 installstyle (installstyle.U):
3308 This variable describes the "style" of the perl installation.
3309 This is intended to be useful for tools that need to
3310 manipulate entire perl distributions. Perl itself doesn't use
3311 this to find its libraries -- the library directories are
3312 stored directly in Config.pm. Currently, there are only two
3313 styles: "lib" and "lib/perl5". The default library locations
3314 (e.g. privlib, sitelib) are either $prefix/lib or
3315 $prefix/lib/perl5. The former is useful if $prefix is a
3316 directory dedicated to perl (e.g. /opt/perl), while the latter
3317 is useful if $prefix is shared by many packages, e.g. if
3320 Unfortunately, while this "style" variable is used to set
3321 defaults for all three directory hierarchies (core, vendor, and
3322 site), there is no guarantee that the same style is actually
3323 appropriate for all those directories. For example, $prefix
3324 might be /opt/perl, but $siteprefix might be /usr/local.
3325 (Perhaps, in retrospect, the "lib" style should never have been
3326 supported, but it did seem like a nice idea at the time.)
3328 The situation is even less clear for tools such as MakeMaker
3329 that can be used to install additional modules into
3330 non-standard places. For example, if a user intends to install
3331 a module into a private directory (perhaps by setting PREFIX on
3332 the Makefile.PL command line), then there is no reason to
3333 assume that the Configure-time $installstyle setting will be
3334 relevant for that PREFIX.
3336 This may later be extended to include other information, so
3337 be careful with pattern-matching on the results.
3339 For compatibility with perl5.005 and earlier, the default
3340 setting is based on whether or not $prefix contains the string
3343 installusrbinperl (instubperl.U):
3344 This variable tells whether Perl should be installed also as
3345 /usr/bin/perl in addition to
3348 installvendorarch (vendorarch.U):
3349 This variable is really the same as vendorarchexp but may differ on
3350 those systems using AFS. For extra portability, only this variable
3351 should be used in makefiles.
3353 installvendorbin (vendorbin.U):
3354 This variable is really the same as vendorbinexp but may differ on
3355 those systems using AFS. For extra portability, only this variable
3356 should be used in makefiles.
3358 installvendorhtml1dir (vendorhtml1dir.U):
3359 This variable is really the same as vendorhtml1direxp but may differ on
3360 those systems using AFS. For extra portability, only this variable
3361 should be used in makefiles.
3363 installvendorhtml3dir (vendorhtml3dir.U):
3364 This variable is really the same as vendorhtml3direxp but may differ on
3365 those systems using AFS. For extra portability, only this variable
3366 should be used in makefiles.
3368 installvendorlib (vendorlib.U):
3369 This variable is really the same as vendorlibexp but may differ on
3370 those systems using AFS. For extra portability, only this variable
3371 should be used in makefiles.
3373 installvendorman1dir (vendorman1dir.U):
3374 This variable is really the same as vendorman1direxp but may differ on
3375 those systems using AFS. For extra portability, only this variable
3376 should be used in makefiles.
3378 installvendorman3dir (vendorman3dir.U):
3379 This variable is really the same as vendorman3direxp but may differ on
3380 those systems using AFS. For extra portability, only this variable
3381 should be used in makefiles.
3383 installvendorscript (vendorscript.U):
3384 This variable is really the same as vendorscriptexp but may differ on
3385 those systems using AFS. For extra portability, only this variable
3386 should be used in makefiles.
3388 intsize (intsize.U):
3389 This variable contains the value of the INTSIZE symbol, which
3390 indicates to the C program how many bytes there are in an int.
3392 issymlink (issymlink.U):
3393 This variable holds the test command to test for a symbolic link
3394 (if they are supported). Typical values include 'test -h' and
3397 ivdformat (perlxvf.U):
3398 This variable contains the format string used for printing
3399 a Perl IV as a signed decimal integer.
3402 This variable is the size of an IV in bytes.
3405 This variable contains the C type used for Perl's IV.
3407 known_extensions (Extensions.U):
3408 This variable holds a list of all XS extensions included in
3412 This variable is defined but not used by Configure.
3413 The value is a plain '' and is not useful.
3416 This variable indicates the program to be used to link
3417 libraries for dynamic loading. On some systems, it is 'ld'.
3418 On ELF systems, it should be $cc. Mostly, we'll try to respect
3419 the hint file setting.
3421 lddlflags (dlsrc.U):
3422 This variable contains any special flags that might need to be
3423 passed to $ld to create a shared library suitable for dynamic
3424 loading. It is up to the makefile to use it. For hpux, it
3425 should be '-b'. For sunos 4.1, it is empty.
3427 ldflags (ccflags.U):
3428 This variable contains any additional C loader flags desired by
3429 the user. It is up to the Makefile to use this.
3431 ldflags_uselargefiles (uselfs.U):
3432 This variable contains the loader flags needed by large file builds
3433 and added to ldflags by hints files.
3435 ldlibpthname (libperl.U):
3436 This variable holds the name of the shared library
3437 search path, often LD_LIBRARY_PATH. To get an empty
3438 string, the hints file must set this to 'none'.
3441 This variable is used internally by Configure to determine the
3442 full pathname (if any) of the less program. After Configure runs,
3443 the value is reset to a plain "less" and is not useful.
3446 This is an old synonym for _a.
3449 This variable contains the location of the C library.
3451 libperl (libperl.U):
3452 The perl executable is obtained by linking perlmain.c with
3453 libperl, any static extensions (usually just DynaLoader),
3454 and any other libraries needed on this system. libperl
3455 is usually libperl.a, but can also be libperl.so.xxx if
3456 the user wishes to build a perl executable with a shared
3460 This variable holds the general path (space-separated) used to find
3461 libraries. It is intended to be used by other units.
3464 This variable holds the additional libraries we want to use.
3465 It is up to the Makefile to deal with it. The list can be empty.
3468 This variable holds the directory names aka dirnames of the libraries
3469 we found and accepted, duplicates are removed.
3472 This variable holds the filenames aka basenames of the libraries
3473 we found and accepted.
3476 This variable holds the full pathnames of the libraries
3477 we found and accepted.
3480 This variable holds the directory names probed for libraries.
3482 libswanted (Myinit.U):
3483 This variable holds a list of all the libraries we want to
3484 search. The order is chosen to pick up the c library
3485 ahead of ucb or bsd libraries for SVR4.
3487 libswanted_uselargefiles (uselfs.U):
3488 This variable contains the libraries needed by large file builds
3489 and added to ldflags by hints files. It is a space separated list
3490 of the library names without the "lib" prefix or any suffix, just
3494 This variable is defined but not used by Configure.
3495 The value is a plain '' and is not useful.
3498 This variable is defined but not used by Configure.
3499 The value is a plain '' and is not useful.
3501 lkflags (ccflags.U):
3502 This variable contains any additional C partial linker flags desired by
3503 the user. It is up to the Makefile to use this.
3506 This variable is used internally by Configure to determine the
3507 full pathname (if any) of the ln program. After Configure runs,
3508 the value is reset to a plain "ln" and is not useful.
3511 This variable holds the name of the command to make
3512 symbolic links (if they are supported). It can be used
3513 in the Makefile. It is either 'ln -s' or 'ln'
3515 localtime_r_proto (d_localtime_r.U):
3516 This variable encodes the prototype of localtime_r.
3517 It is zero if d_localtime_r is undef, and one of the
3518 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3521 locincpth (ccflags.U):
3522 This variable contains a list of additional directories to be
3523 searched by the compiler. The appropriate '-I' directives will
3524 be added to ccflags. This is intended to simplify setting
3525 local directories from the Configure command line.
3526 It's not much, but it parallels the loclibpth stuff in libpth.U.
3528 loclibpth (libpth.U):
3529 This variable holds the paths (space-separated) used to find local
3530 libraries. It is prepended to libpth, and is intended to be easily
3531 set from the command line.
3533 longdblsize (d_longdbl.U):
3534 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3535 indicates to the C program how many bytes there are in a long double,
3536 if this system supports long doubles.
3538 longlongsize (d_longlong.U):
3539 This variable contains the value of the LONGLONGSIZE symbol, which
3540 indicates to the C program how many bytes there are in a long long,
3541 if this system supports long long.
3543 longsize (intsize.U):
3544 This variable contains the value of the LONGSIZE symbol, which
3545 indicates to the C program how many bytes there are in a long.
3548 This variable is defined but not used by Configure.
3549 The value is a plain '' and is not useful.
3552 This variable is defined but not used by Configure.
3553 The value is a plain '' and is not useful.
3556 This variable is used internally by Configure to determine the
3557 full pathname (if any) of the ls program. After Configure runs,
3558 the value is reset to a plain "ls" and is not useful.
3560 lseeksize (lseektype.U):
3561 This variable defines lseektype to be something like off_t, long,
3562 or whatever type is used to declare lseek offset's type in the
3563 kernel (which also appears to be lseek's return type).
3565 lseektype (lseektype.U):
3566 This variable defines lseektype to be something like off_t, long,
3567 or whatever type is used to declare lseek offset's type in the
3568 kernel (which also appears to be lseek's return type).
3571 This variable indicates that the Misc Attribute Definition code is to
3575 If the Misc Attribute Decoration is to be compiled, this variable is
3576 set to the name of the extra header files to be used, else it is ''
3579 If the Misc Attribute Decoration is to be compiled, this variable is
3580 set to the name of the extra object files to be used, else it is ''
3583 If the Misc Attribute Decoration is to be compiled, this variable is
3584 set to the name of the extra C source files to be used, else it is ''
3587 This variable is defined but not used by Configure.
3588 The value is a plain '' and is not useful.
3591 This variable is defined but not used by Configure.
3592 The value is a plain '' and is not useful.
3595 This variable is used internally by Configure to determine the
3596 full pathname (if any) of the make program. After Configure runs,
3597 the value is reset to a plain "make" and is not useful.
3599 make_set_make (make.U):
3600 Some versions of 'make' set the variable MAKE. Others do not.
3601 This variable contains the string to be included in Makefile.SH
3602 so that MAKE is set if needed, and not if not needed.
3603 Possible values are:
3605 make_set_make='#' # If your make program handles this for you,
3607 make_set_make="MAKE=$make" # if it doesn't.
3609 This uses a comment character to distinguish a
3610 'set' value (from a previous config.sh or Configure '-D' option)
3611 from an uncomputed value.
3613 mallocobj (mallocsrc.U):
3614 This variable contains the name of the malloc.o that this package
3615 generates, if that malloc.o is preferred over the system malloc.
3616 Otherwise the value is null. This variable is intended for generating
3617 Makefiles. See mallocsrc.
3619 mallocsrc (mallocsrc.U):
3620 This variable contains the name of the malloc.c that comes with
3621 the package, if that malloc.c is preferred over the system malloc.
3622 Otherwise the value is null. This variable is intended for generating
3625 malloctype (mallocsrc.U):
3626 This variable contains the kind of ptr returned by malloc and realloc.
3628 man1dir (man1dir.U):
3629 This variable contains the name of the directory in which manual
3630 source pages are to be put. It is the responsibility of the
3631 Makefile.SH to get the value of this into the proper command.
3632 You must be prepared to do the ~name expansion yourself.
3634 man1direxp (man1dir.U):
3635 This variable is the same as the man1dir variable, but is filename
3636 expanded at configuration time, for convenient use in makefiles.
3638 man1ext (man1dir.U):
3639 This variable contains the extension that the manual page should
3640 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3643 man3dir (man3dir.U):
3644 This variable contains the name of the directory in which manual
3645 source pages are to be put. It is the responsibility of the
3646 Makefile.SH to get the value of this into the proper command.
3647 You must be prepared to do the ~name expansion yourself.
3649 man3direxp (man3dir.U):
3650 This variable is the same as the man3dir variable, but is filename
3651 expanded at configuration time, for convenient use in makefiles.
3653 man3ext (man3dir.U):
3654 This variable contains the extension that the manual page should
3655 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3659 This variable is used internally by Configure to determine the
3660 full pathname (if any) of the Mcc program. After Configure runs,
3661 the value is reset to a plain "Mcc" and is not useful.
3663 mips_type (usrinc.U):
3664 This variable holds the environment type for the mips system.
3665 Possible values are "BSD 4.3" and "System V".
3667 mistrustnm (Csym.U):
3668 This variable can be used to establish a fallthrough for the cases
3669 where nm fails to find a symbol. If usenm is false or usenm is true
3670 and mistrustnm is false, this variable has no effect. If usenm is true
3671 and mistrustnm is "compile", a test program will be compiled to try to
3672 find any symbol that can't be located via nm lookup. If mistrustnm is
3673 "run", the test program will be run as well as being compiled.
3676 This variable is used internally by Configure to determine the
3677 full pathname (if any) of the mkdir program. After Configure runs,
3678 the value is reset to a plain "mkdir" and is not useful.
3680 mmaptype (d_mmap.U):
3681 This symbol contains the type of pointer returned by mmap()
3682 (and simultaneously the type of the first argument).
3683 It can be 'void *' or 'caddr_t'.
3685 modetype (modetype.U):
3686 This variable defines modetype to be something like mode_t,
3687 int, unsigned short, or whatever type is used to declare file
3688 modes for system calls.
3691 This variable is used internally by Configure to determine the
3692 full pathname (if any) of the more program. After Configure runs,
3693 the value is reset to a plain "more" and is not useful.
3695 multiarch (multiarch.U):
3696 This variable conditionally defines the MULTIARCH symbol
3697 which signifies the presence of multiplatform files.
3698 This is normally set by hints files.
3701 This variable is defined but not used by Configure.
3702 The value is a plain '' and is not useful.
3704 myarchname (archname.U):
3705 This variable holds the architecture name computed by Configure in
3706 a previous run. It is not intended to be perused by any user and
3707 should never be set in a hint file.
3709 mydomain (myhostname.U):
3710 This variable contains the eventual value of the MYDOMAIN symbol,
3711 which is the domain of the host the program is going to run on.
3712 The domain must be appended to myhostname to form a complete host name.
3713 The dot comes with mydomain, and need not be supplied by the program.
3715 myhostname (myhostname.U):
3716 This variable contains the eventual value of the MYHOSTNAME symbol,
3717 which is the name of the host the program is going to run on.
3718 The domain is not kept with hostname, but must be gotten from mydomain.
3719 The dot comes with mydomain, and need not be supplied by the program.
3721 myuname (Oldconfig.U):
3722 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3723 pseudo variables assignments in the output are stripped, thank you. The
3724 whole thing is then lower-cased.
3727 This variable contains the '-n' flag if that is what causes the echo
3728 command to suppress newline. Otherwise it is null. Correct usage is
3729 $echo $n "prompt for a question: $c".
3731 need_va_copy (need_va_copy.U):
3732 This symbol, if defined, indicates that the system stores
3733 the variable argument list datatype, va_list, in a format
3734 that cannot be copied by simple assignment, so that some
3735 other means must be used when copying is required.
3736 As such systems vary in their provision (or non-provision)
3737 of copying mechanisms, handy.h defines a platform-
3738 independent macro, Perl_va_copy(src, dst), to do the job.
3740 netdb_hlen_type (netdbtype.U):
3741 This variable holds the type used for the 2nd argument to
3742 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3743 This is only useful if you have gethostbyaddr(), naturally.
3745 netdb_host_type (netdbtype.U):
3746 This variable holds the type used for the 1st argument to
3747 gethostbyaddr(). Usually, this is char * or void *, possibly
3748 with or without a const prefix.
3749 This is only useful if you have gethostbyaddr(), naturally.
3751 netdb_name_type (netdbtype.U):
3752 This variable holds the type used for the argument to
3753 gethostbyname(). Usually, this is char * or const char *.
3754 This is only useful if you have gethostbyname(), naturally.
3756 netdb_net_type (netdbtype.U):
3757 This variable holds the type used for the 1st argument to
3758 getnetbyaddr(). Usually, this is int or long.
3759 This is only useful if you have getnetbyaddr(), naturally.
3762 This variable is used internally by Configure to determine the
3763 full pathname (if any) of the nm program. After Configure runs,
3764 the value is reset to a plain "nm" and is not useful.
3767 This variable holds the options that may be necessary for nm.
3769 nm_so_opt (usenm.U):
3770 This variable holds the options that may be necessary for nm
3771 to work on a shared library but that can not be used on an
3772 archive library. Currently, this is only used by Linux, where
3773 nm --dynamic is *required* to get symbols from an ELF library which
3774 has been stripped, but nm --dynamic is *fatal* on an archive library.
3775 Maybe Linux should just always set usenm=false.
3777 nonxs_ext (Extensions.U):
3778 This variable holds a list of all non-xs extensions included
3779 in the package. All of them will be built.
3782 This variable is used internally by Configure to determine the
3783 full pathname (if any) of the nroff program. After Configure runs,
3784 the value is reset to a plain "nroff" and is not useful.
3786 nv_preserves_uv_bits (perlxv.U):
3787 This variable indicates how many of bits type uvtype
3788 a variable nvtype can preserve.
3790 nveformat (perlxvf.U):
3791 This variable contains the format string used for printing
3792 a Perl NV using %e-ish floating point format.
3794 nvEUformat (perlxvf.U):
3795 This variable contains the format string used for printing
3796 a Perl NV using %E-ish floating point format.
3798 nvfformat (perlxvf.U):
3799 This variable confains the format string used for printing
3800 a Perl NV using %f-ish floating point format.
3802 nvFUformat (perlxvf.U):
3803 This variable confains the format string used for printing
3804 a Perl NV using %F-ish floating point format.
3806 nvgformat (perlxvf.U):
3807 This variable contains the format string used for printing
3808 a Perl NV using %g-ish floating point format.
3810 nvGUformat (perlxvf.U):
3811 This variable contains the format string used for printing
3812 a Perl NV using %G-ish floating point format.
3815 This variable is the size of an NV in bytes.
3818 This variable contains the C type used for Perl's NV.
3820 o_nonblock (nblock_io.U):
3821 This variable bears the symbol value to be used during open() or fcntl()
3822 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3823 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3824 but that is only supported by some devices.
3827 This is an old synonym for _o.
3829 old_pthread_create_joinable (d_pthrattrj.U):
3830 This variable defines the constant to use for creating joinable
3831 (aka undetached) pthreads. Unused if pthread.h defines
3832 PTHREAD_CREATE_JOINABLE. If used, possible values are
3833 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3835 optimize (ccflags.U):
3836 This variable contains any optimizer/debugger flag that should be used.
3837 It is up to the Makefile to use it.
3839 orderlib (orderlib.U):
3840 This variable is "true" if the components of libraries must be ordered
3841 (with `lorder $* | tsort`) before placing them in an archive. Set to
3842 "false" if ranlib or ar can generate random libraries.
3844 osname (Oldconfig.U):
3845 This variable contains the operating system name (e.g. sunos,
3846 solaris, hpux, etc.). It can be useful later on for setting
3847 defaults. Any spaces are replaced with underscores. It is set
3848 to a null string if we can't figure it out.
3850 osvers (Oldconfig.U):
3851 This variable contains the operating system version (e.g.
3852 4.1.3, 5.2, etc.). It is primarily used for helping select
3853 an appropriate hints file, but might be useful elsewhere for
3854 setting defaults. It is set to '' if we can't figure it out.
3855 We try to be flexible about how much of the version number
3856 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3857 same for this package, hints files might just be os_4.0 or
3858 os_4.1, etc., not keeping separate files for each little release.
3860 otherlibdirs (otherlibdirs.U):
3861 This variable contains a colon-separated set of paths for the perl
3862 binary to search for additional library files or modules.
3863 These directories will be tacked to the end of @INC.
3864 Perl will automatically search below each path for version-
3865 and architecture-specific directories. See inc_version_list
3867 A value of ' ' means 'none' and is used to preserve this value
3868 for the next run through Configure.
3870 package (package.U):
3871 This variable contains the name of the package being constructed.
3872 It is primarily intended for the use of later Configure units.
3875 This variable contains the name of the preferred pager on the system.
3876 Usual values are (the full pathnames of) more, less, pg, or cat.
3879 This variable contains a command that produces the text of the
3880 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3881 "ypcat passwd" when NIS is used.
3882 On some systems, such as os390, there may be no equivalent
3883 command, in which case this variable is unset.
3885 patchlevel (patchlevel.U):
3886 The patchlevel level of this package.
3887 The value of patchlevel comes from the patchlevel.h file.
3888 In a version number such as 5.6.1, this is the "6".
3889 In patchlevel.h, this is referred to as "PERL_VERSION".
3892 This is an old synonym for p_ in Head.U, the character
3893 used to separate elements in the command shell search PATH.
3896 This variable is defined but not used by Configure.
3897 The value is a plain '' and is not useful.
3900 This variable contains the full path (if any) to a previously
3901 installed perl5.005 or later suitable for running the script
3902 to determine inc_version_list.
3904 PERL_API_REVISION (patchlevel.h):
3905 This number describes the earliest compatible PERL_REVISION of
3906 Perl ("compatibility" here being defined as sufficient binary/API
3907 compatibility to run XS code built with the older version).
3908 Normally this does not change across maintenance releases.
3909 Please read the comment in patchlevel.h.
3911 PERL_API_SUBVERSION (patchlevel.h):
3912 This number describes the earliest compatible PERL_SUBVERSION of
3913 Perl ("compatibility" here being defined as sufficient binary/API
3914 compatibility to run XS code built with the older version).
3915 Normally this does not change across maintenance releases.
3916 Please read the comment in patchlevel.h.
3918 PERL_API_VERSION (patchlevel.h):
3919 This number describes the earliest compatible PERL_VERSION of
3920 Perl ("compatibility" here being defined as sufficient binary/API
3921 compatibility to run XS code built with the older version).
3922 Normally this does not change across maintenance releases.
3923 Please read the comment in patchlevel.h.
3925 PERL_CONFIG_SH (Oldsyms.U):
3926 This is set to 'true' in config.sh so that a shell script
3927 sourcing config.sh can tell if it has been sourced already.
3929 PERL_PATCHLEVEL (Oldsyms.U):
3930 This symbol reflects the patchlevel, if available. Will usually
3931 come from the .patch file, which is available when the perl
3932 source tree was fetched with rsync.
3934 perl_patchlevel (patchlevel.U):
3935 This is the Perl patch level, a numeric change identifier,
3936 as defined by whichever source code maintenance system
3937 is used to maintain the patches; currently Perforce.
3938 It does not correlate with the Perl version numbers or
3939 the maintenance versus development dichotomy except
3940 by also being increasing.
3942 PERL_REVISION (Oldsyms.U):
3943 In a Perl version number such as 5.6.2, this is the 5.
3944 This value is manually set in patchlevel.h
3946 PERL_SUBVERSION (Oldsyms.U):
3947 In a Perl version number such as 5.6.2, this is the 2.
3948 Values greater than 50 represent potentially unstable
3949 development subversions.
3950 This value is manually set in patchlevel.h
3952 PERL_VERSION (Oldsyms.U):
3953 In a Perl version number such as 5.6.2, this is the 6.
3954 This value is manually set in patchlevel.h
3956 perladmin (perladmin.U):
3957 Electronic mail address of the perl5 administrator.
3960 The list of libraries needed by Perl only (any libraries needed
3961 by extensions only will by dropped, if using dynamic loading).
3963 perlpath (perlpath.U):
3964 This variable contains the eventual value of the PERLPATH symbol,
3965 which contains the name of the perl interpreter to be used in
3966 shell scripts and in the "eval 'exec'" idiom. This variable is
3967 not necessarily the pathname of the file containing the perl
3968 interpreter; you must append the executable extension (_exe) if
3969 it is not already present. Note that Perl code that runs during
3970 the Perl build process cannot reference this variable, as Perl
3971 may not have been installed, or even if installed, may be a
3972 different version of Perl.
3975 This variable is used internally by Configure to determine the
3976 full pathname (if any) of the pg program. After Configure runs,
3977 the value is reset to a plain "pg" and is not useful.
3979 phostname (myhostname.U):
3980 This variable contains the eventual value of the PHOSTNAME symbol,
3981 which is a command that can be fed to popen() to get the host name.
3982 The program should probably not presume that the domain is or isn't
3985 pidtype (pidtype.U):
3986 This variable defines PIDTYPE to be something like pid_t, int,
3987 ushort, or whatever type is used to declare process ids in the kernel.
3990 Holds the private path used by Configure to find out the libraries.
3991 Its value is prepend to libpth. This variable takes care of special
3992 machines, like the mips. Usually, it should be empty.
3995 This variable is defined but not used by Configure.
3996 The value is a plain '' and is not useful.
3999 This variable is defined but not used by Configure.
4000 The value is a plain '' and is not useful.
4003 This variable holds the name of the directory below which the
4004 user will install the package. Usually, this is /usr/local, and
4005 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4006 man pages in /usr/local/man, etc. It is only used to set defaults
4007 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4009 prefixexp (prefix.U):
4010 This variable holds the full absolute path of the directory below
4011 which the user will install the package. Derived from prefix.
4013 privlib (privlib.U):
4014 This variable contains the eventual value of the PRIVLIB symbol,
4015 which is the name of the private library for this package. It may
4016 have a ~ on the front. It is up to the makefile to eventually create
4017 this directory while performing installation (with ~ substitution).
4019 privlibexp (privlib.U):
4020 This variable is the ~name expanded version of privlib, so that you
4021 may use it directly in Makefiles or shell scripts.
4023 procselfexe (d_procselfexe.U):
4024 If d_procselfexe is defined, $procselfexe is the filename
4025 of the symbolic link pointing to the absolute pathname of
4026 the executing program.
4028 prototype (prototype.U):
4029 This variable holds the eventual value of CAN_PROTOTYPE, which
4030 indicates the C compiler can handle funciton prototypes.
4032 ptrsize (ptrsize.U):
4033 This variable contains the value of the PTRSIZE symbol, which
4034 indicates to the C program how many bytes there are in a pointer.
4036 quadkind (quadtype.U):
4037 This variable, if defined, encodes the type of a quad:
4038 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4040 quadtype (quadtype.U):
4041 This variable defines Quad_t to be something like long, int,
4042 long long, int64_t, or whatever type is used for 64-bit integers.
4044 randbits (randfunc.U):
4045 Indicates how many bits are produced by the function used to
4046 generate normalized random numbers.
4048 randfunc (randfunc.U):
4049 Indicates the name of the random number function to use.
4050 Values include drand48, random, and rand. In C programs,
4051 the 'Drand01' macro is defined to generate uniformly distributed
4052 random numbers over the range [0., 1.[ (see drand01 and nrand).
4054 random_r_proto (d_random_r.U):
4055 This variable encodes the prototype of random_r.
4056 It is zero if d_random_r is undef, and one of the
4057 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4060 randseedtype (randfunc.U):
4061 Indicates the type of the argument of the seedfunc.
4063 ranlib (orderlib.U):
4064 This variable is set to the pathname of the ranlib program, if it is
4065 needed to generate random libraries. Set to ":" if ar can generate
4066 random libraries or if random libraries are not supported
4068 rd_nodata (nblock_io.U):
4069 This variable holds the return code from read() when no data is
4070 present. It should be -1, but some systems return 0 when O_NDELAY is
4071 used, which is a shame because you cannot make the difference between
4072 no data and an EOF.. Sigh!
4074 readdir64_r_proto (d_readdir64_r.U):
4075 This variable encodes the prototype of readdir64_r.
4076 It is zero if d_readdir64_r is undef, and one of the
4077 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4080 readdir_r_proto (d_readdir_r.U):
4081 This variable encodes the prototype of readdir_r.
4082 It is zero if d_readdir_r is undef, and one of the
4083 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4086 revision (patchlevel.U):
4087 The value of revision comes from the patchlevel.h file.
4088 In a version number such as 5.6.1, this is the "5".
4089 In patchlevel.h, this is referred to as "PERL_REVISION".
4092 This variable is used internally by Configure to determine the
4093 full pathname (if any) of the rm program. After Configure runs,
4094 the value is reset to a plain "rm" and is not useful.
4097 This variable is defined but not used by Configure.
4098 The value is a plain '' and is not useful.
4101 This variable contains the command used by Configure
4102 to copy and execute a cross-compiled executable in the
4103 target host. Useful and available only during Perl build.
4104 Empty string '' if not cross-compiling.
4107 This variable contains 'true' or 'false' depending whether the
4108 nm extraction should be performed or not, according to the value
4109 of usenm and the flags on the Configure command line.
4111 sched_yield (d_pthread_y.U):
4112 This variable defines the way to yield the execution
4113 of the current thread.
4115 scriptdir (scriptdir.U):
4116 This variable holds the name of the directory in which the user wants
4117 to put publicly scripts for the package in question. It is either
4118 the same directory as for binaries, or a special one that can be
4119 mounted across different architectures, like /usr/share. Programs
4120 must be prepared to deal with ~name expansion.
4122 scriptdirexp (scriptdir.U):
4123 This variable is the same as scriptdir, but is filename expanded
4124 at configuration time, for programs not wanting to bother with it.
4127 This variable is used internally by Configure to determine the
4128 full pathname (if any) of the sed program. After Configure runs,
4129 the value is reset to a plain "sed" and is not useful.
4131 seedfunc (randfunc.U):
4132 Indicates the random number generating seed function.
4133 Values include srand48, srandom, and srand.
4135 selectminbits (selectminbits.U):
4136 This variable holds the minimum number of bits operated by select.
4137 That is, if you do select(n, ...), how many bits at least will be
4138 cleared in the masks if some activity is detected. Usually this
4139 is either n or 32*ceil(n/32), especially many little-endians do
4140 the latter. This is only useful if you have select(), naturally.
4142 selecttype (selecttype.U):
4143 This variable holds the type used for the 2nd, 3rd, and 4th
4144 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4145 is defined, and 'int *' otherwise. This is only useful if you
4146 have select(), naturally.
4149 This variable is defined but not used by Configure.
4150 The value is a plain '' and is not useful.
4152 setgrent_r_proto (d_setgrent_r.U):
4153 This variable encodes the prototype of setgrent_r.
4154 It is zero if d_setgrent_r is undef, and one of the
4155 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4158 sethostent_r_proto (d_sethostent_r.U):
4159 This variable encodes the prototype of sethostent_r.
4160 It is zero if d_sethostent_r is undef, and one of the
4161 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4164 setlocale_r_proto (d_setlocale_r.U):
4165 This variable encodes the prototype of setlocale_r.
4166 It is zero if d_setlocale_r is undef, and one of the
4167 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4170 setnetent_r_proto (d_setnetent_r.U):
4171 This variable encodes the prototype of setnetent_r.
4172 It is zero if d_setnetent_r is undef, and one of the
4173 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4176 setprotoent_r_proto (d_setprotoent_r.U):
4177 This variable encodes the prototype of setprotoent_r.
4178 It is zero if d_setprotoent_r is undef, and one of the
4179 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4182 setpwent_r_proto (d_setpwent_r.U):
4183 This variable encodes the prototype of setpwent_r.
4184 It is zero if d_setpwent_r is undef, and one of the
4185 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4188 setservent_r_proto (d_setservent_r.U):
4189 This variable encodes the prototype of setservent_r.
4190 It is zero if d_setservent_r is undef, and one of the
4191 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4195 This variable contains the full pathname of the shell used
4196 on this system to execute Bourne shell scripts. Usually, this will be
4197 /bin/sh, though it's possible that some systems will have /bin/ksh,
4198 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4200 This unit comes before Options.U, so you can't set sh with a '-D'
4201 option, though you can override this (and startsh)
4202 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4205 This variable is defined but not used by Configure.
4206 The value is a plain '' and is not useful.
4208 sharpbang (spitshell.U):
4209 This variable contains the string #! if this system supports that
4212 shmattype (d_shmat.U):
4213 This symbol contains the type of pointer returned by shmat().
4214 It can be 'void *' or 'char *'.
4216 shortsize (intsize.U):
4217 This variable contains the value of the SHORTSIZE symbol which
4218 indicates to the C program how many bytes there are in a short.
4220 shrpenv (libperl.U):
4221 If the user builds a shared libperl.so, then we need to tell the
4222 'perl' executable where it will be able to find the installed libperl.so.
4223 One way to do this on some systems is to set the environment variable
4224 LD_RUN_PATH to the directory that will be the final location of the
4225 shared libperl.so. The makefile can use this with something like
4226 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4228 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4231 See the main perl Makefile.SH for actual working usage.
4232 Alternatively, we might be able to use a command line option such
4233 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4234 $archlibexp/CORE (Linux).
4236 shsharp (spitshell.U):
4237 This variable tells further Configure units whether your sh can
4240 sig_count (sig_name.U):
4241 This variable holds a number larger than the largest valid
4242 signal number. This is usually the same as the NSIG macro.
4244 sig_name (sig_name.U):
4245 This variable holds the signal names, space separated. The leading
4246 SIG in signal name is removed. A ZERO is prepended to the list.
4247 This is currently not used, sig_name_init is used instead.
4249 sig_name_init (sig_name.U):
4250 This variable holds the signal names, enclosed in double quotes and
4251 separated by commas, suitable for use in the SIG_NAME definition
4252 below. A "ZERO" is prepended to the list, and the list is
4253 terminated with a plain 0. The leading SIG in signal names
4254 is removed. See sig_num.
4256 sig_num (sig_name.U):
4257 This variable holds the signal numbers, space separated. A ZERO is
4258 prepended to the list (corresponding to the fake SIGZERO).
4259 Those numbers correspond to the value of the signal listed
4260 in the same place within the sig_name list.
4261 This is currently not used, sig_num_init is used instead.
4263 sig_num_init (sig_name.U):
4264 This variable holds the signal numbers, enclosed in double quotes and
4265 separated by commas, suitable for use in the SIG_NUM definition
4266 below. A "ZERO" is prepended to the list, and the list is
4267 terminated with a plain 0.
4269 sig_size (sig_name.U):
4270 This variable contains the number of elements of the sig_name
4273 signal_t (d_voidsig.U):
4274 This variable holds the type of the signal handler (void or int).
4276 sitearch (sitearch.U):
4277 This variable contains the eventual value of the SITEARCH symbol,
4278 which is the name of the private library for this package. It may
4279 have a ~ on the front. It is up to the makefile to eventually create
4280 this directory while performing installation (with ~ substitution).
4281 The standard distribution will put nothing in this directory.
4282 After perl has been installed, users may install their own local
4283 architecture-dependent modules in this directory with
4284 MakeMaker Makefile.PL
4285 or equivalent. See INSTALL for details.
4287 sitearchexp (sitearch.U):
4288 This variable is the ~name expanded version of sitearch, so that you
4289 may use it directly in Makefiles or shell scripts.
4291 sitebin (sitebin.U):
4292 This variable holds the name of the directory in which the user wants
4293 to put add-on publicly executable files for the package in question. It
4294 is most often a local directory such as /usr/local/bin. Programs using
4295 this variable must be prepared to deal with ~name substitution.
4296 The standard distribution will put nothing in this directory.
4297 After perl has been installed, users may install their own local
4298 executables in this directory with
4299 MakeMaker Makefile.PL
4300 or equivalent. See INSTALL for details.
4302 sitebinexp (sitebin.U):
4303 This is the same as the sitebin variable, but is filename expanded at
4304 configuration time, for use in your makefiles.
4306 sitehtml1dir (sitehtml1dir.U):
4307 This variable contains the name of the directory in which site-specific
4308 html source pages are to be put. It is the responsibility of the
4309 Makefile.SH to get the value of this into the proper command.
4310 You must be prepared to do the ~name expansion yourself.
4311 The standard distribution will put nothing in this directory.
4312 After perl has been installed, users may install their own local
4313 html pages in this directory with
4314 MakeMaker Makefile.PL
4315 or equivalent. See INSTALL for details.
4317 sitehtml1direxp (sitehtml1dir.U):
4318 This variable is the same as the sitehtml1dir variable, but is filename
4319 expanded at configuration time, for convenient use in makefiles.
4321 sitehtml3dir (sitehtml3dir.U):
4322 This variable contains the name of the directory in which site-specific
4323 library html source pages are to be put. It is the responsibility of the
4324 Makefile.SH to get the value of this into the proper command.
4325 You must be prepared to do the ~name expansion yourself.
4326 The standard distribution will put nothing in this directory.
4327 After perl has been installed, users may install their own local
4328 library html pages in this directory with
4329 MakeMaker Makefile.PL
4330 or equivalent. See INSTALL for details.
4332 sitehtml3direxp (sitehtml3dir.U):
4333 This variable is the same as the sitehtml3dir variable, but is filename
4334 expanded at configuration time, for convenient use in makefiles.
4336 sitelib (sitelib.U):
4337 This variable contains the eventual value of the SITELIB symbol,
4338 which is the name of the private library for this package. It may
4339 have a ~ on the front. It is up to the makefile to eventually create
4340 this directory while performing installation (with ~ substitution).
4341 The standard distribution will put nothing in this directory.
4342 After perl has been installed, users may install their own local
4343 architecture-independent modules in this directory with
4344 MakeMaker Makefile.PL
4345 or equivalent. See INSTALL for details.
4347 sitelib_stem (sitelib.U):
4348 This variable is $sitelibexp with any trailing version-specific component
4349 removed. The elements in inc_version_list (inc_version_list.U) can
4350 be tacked onto this variable to generate a list of directories to search.
4352 sitelibexp (sitelib.U):
4353 This variable is the ~name expanded version of sitelib, so that you
4354 may use it directly in Makefiles or shell scripts.
4356 siteman1dir (siteman1dir.U):
4357 This variable contains the name of the directory in which site-specific
4358 manual source pages are to be put. It is the responsibility of the
4359 Makefile.SH to get the value of this into the proper command.
4360 You must be prepared to do the ~name expansion yourself.
4361 The standard distribution will put nothing in this directory.
4362 After perl has been installed, users may install their own local
4363 man1 pages in this directory with
4364 MakeMaker Makefile.PL
4365 or equivalent. See INSTALL for details.
4367 siteman1direxp (siteman1dir.U):
4368 This variable is the same as the siteman1dir variable, but is filename
4369 expanded at configuration time, for convenient use in makefiles.
4371 siteman3dir (siteman3dir.U):
4372 This variable contains the name of the directory in which site-specific
4373 library man source pages are to be put. It is the responsibility of the
4374 Makefile.SH to get the value of this into the proper command.
4375 You must be prepared to do the ~name expansion yourself.
4376 The standard distribution will put nothing in this directory.
4377 After perl has been installed, users may install their own local
4378 man3 pages in this directory with
4379 MakeMaker Makefile.PL
4380 or equivalent. See INSTALL for details.
4382 siteman3direxp (siteman3dir.U):
4383 This variable is the same as the siteman3dir variable, but is filename
4384 expanded at configuration time, for convenient use in makefiles.
4386 siteprefix (siteprefix.U):
4387 This variable holds the full absolute path of the directory below
4388 which the user will install add-on packages.
4389 See INSTALL for usage and examples.
4391 siteprefixexp (siteprefix.U):
4392 This variable holds the full absolute path of the directory below
4393 which the user will install add-on packages. Derived from siteprefix.
4395 sitescript (sitescript.U):
4396 This variable holds the name of the directory in which the user wants
4397 to put add-on publicly executable files for the package in question. It
4398 is most often a local directory such as /usr/local/bin. Programs using
4399 this variable must be prepared to deal with ~name substitution.
4400 The standard distribution will put nothing in this directory.
4401 After perl has been installed, users may install their own local
4402 scripts in this directory with
4403 MakeMaker Makefile.PL
4404 or equivalent. See INSTALL for details.
4406 sitescriptexp (sitescript.U):
4407 This is the same as the sitescript variable, but is filename expanded at
4408 configuration time, for use in your makefiles.
4410 sizesize (sizesize.U):
4411 This variable contains the size of a sizetype in bytes.
4413 sizetype (sizetype.U):
4414 This variable defines sizetype to be something like size_t,
4415 unsigned long, or whatever type is used to declare length
4416 parameters for string functions.
4419 This variable is defined but not used by Configure.
4420 The value is a plain '' and is not useful.
4423 This variable is defined but not used by Configure.
4424 The value is a plain '' and is not useful.
4427 This variable holds the extension used to identify shared libraries
4428 (also known as shared objects) on the system. Usually set to 'so'.
4430 sockethdr (d_socket.U):
4431 This variable has any cpp '-I' flags needed for socket support.
4433 socketlib (d_socket.U):
4434 This variable has the names of any libraries needed for socket support.
4436 socksizetype (socksizetype.U):
4437 This variable holds the type used for the size argument
4438 for various socket calls like accept. Usual values include
4439 socklen_t, size_t, and int.
4442 This variable is used internally by Configure to determine the
4443 full pathname (if any) of the sort program. After Configure runs,
4444 the value is reset to a plain "sort" and is not useful.
4446 spackage (package.U):
4447 This variable contains the name of the package being constructed,
4448 with the first letter uppercased, i.e. suitable for starting
4451 spitshell (spitshell.U):
4452 This variable contains the command necessary to spit out a runnable
4453 shell on this system. It is either cat or a grep '-v' for # comments.
4455 sPRId64 (quadfio.U):
4456 This variable, if defined, contains the string used by stdio to
4457 format 64-bit decimal numbers (format 'd') for output.
4459 sPRIeldbl (longdblfio.U):
4460 This variable, if defined, contains the string used by stdio to
4461 format long doubles (format 'e') for output.
4463 sPRIEUldbl (longdblfio.U):
4464 This variable, if defined, contains the string used by stdio to
4465 format long doubles (format 'E') for output.
4466 The 'U' in the name is to separate this from sPRIeldbl so that even
4467 case-blind systems can see the difference.
4469 sPRIfldbl (longdblfio.U):
4470 This variable, if defined, contains the string used by stdio to
4471 format long doubles (format 'f') for output.
4473 sPRIFUldbl (longdblfio.U):
4474 This variable, if defined, contains the string used by stdio to
4475 format long doubles (format 'F') for output.
4476 The 'U' in the name is to separate this from sPRIfldbl so that even
4477 case-blind systems can see the difference.
4479 sPRIgldbl (longdblfio.U):
4480 This variable, if defined, contains the string used by stdio to
4481 format long doubles (format 'g') for output.
4483 sPRIGUldbl (longdblfio.U):
4484 This variable, if defined, contains the string used by stdio to
4485 format long doubles (format 'G') for output.
4486 The 'U' in the name is to separate this from sPRIgldbl so that even
4487 case-blind systems can see the difference.
4489 sPRIi64 (quadfio.U):
4490 This variable, if defined, contains the string used by stdio to
4491 format 64-bit decimal numbers (format 'i') for output.
4493 sPRIo64 (quadfio.U):
4494 This variable, if defined, contains the string used by stdio to
4495 format 64-bit octal numbers (format 'o') for output.
4497 sPRIu64 (quadfio.U):
4498 This variable, if defined, contains the string used by stdio to
4499 format 64-bit unsigned decimal numbers (format 'u') for output.
4501 sPRIx64 (quadfio.U):
4502 This variable, if defined, contains the string used by stdio to
4503 format 64-bit hexadecimal numbers (format 'x') for output.
4505 sPRIXU64 (quadfio.U):
4506 This variable, if defined, contains the string used by stdio to
4507 format 64-bit hExADECimAl numbers (format 'X') for output.
4508 The 'U' in the name is to separate this from sPRIx64 so that even
4509 case-blind systems can see the difference.
4511 srand48_r_proto (d_srand48_r.U):
4512 This variable encodes the prototype of srand48_r.
4513 It is zero if d_srand48_r is undef, and one of the
4514 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4517 srandom_r_proto (d_srandom_r.U):
4518 This variable encodes the prototype of srandom_r.
4519 It is zero if d_srandom_r is undef, and one of the
4520 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4524 This variable holds the path to the package source. It is up to
4525 the Makefile to use this variable and set VPATH accordingly to
4526 find the sources remotely.
4528 sSCNfldbl (longdblfio.U):
4529 This variable, if defined, contains the string used by stdio to
4530 format long doubles (format 'f') for input.
4532 ssizetype (ssizetype.U):
4533 This variable defines ssizetype to be something like ssize_t,
4534 long or int. It is used by functions that return a count
4535 of bytes or an error condition. It must be a signed type.
4536 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4538 startperl (startperl.U):
4539 This variable contains the string to put on the front of a perl
4540 script to make sure (hopefully) that it runs with perl and not some
4541 shell. Of course, that leading line must be followed by the classical
4543 eval 'exec perl -S $0 ${1+"$@"}'
4544 if $running_under_some_shell;
4545 to guarantee perl startup should the shell execute the script. Note
4546 that this magic incatation is not understood by csh.
4548 startsh (startsh.U):
4549 This variable contains the string to put on the front of a shell
4550 script to make sure (hopefully) that it runs with sh and not some
4553 static_ext (Extensions.U):
4554 This variable holds a list of XS extension files we want to
4555 link statically into the package. It is used by Makefile.
4557 stdchar (stdchar.U):
4558 This variable conditionally defines STDCHAR to be the type of char
4559 used in stdio.h. It has the values "unsigned char" or "char".
4561 stdio_base (d_stdstdio.U):
4562 This variable defines how, given a FILE pointer, fp, to access the
4563 _base field (or equivalent) of stdio.h's FILE structure. This will
4564 be used to define the macro FILE_base(fp).
4566 stdio_bufsiz (d_stdstdio.U):
4567 This variable defines how, given a FILE pointer, fp, to determine
4568 the number of bytes store in the I/O buffer pointer to by the
4569 _base field (or equivalent) of stdio.h's FILE structure. This will
4570 be used to define the macro FILE_bufsiz(fp).
4572 stdio_cnt (d_stdstdio.U):
4573 This variable defines how, given a FILE pointer, fp, to access the
4574 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4575 be used to define the macro FILE_cnt(fp).
4577 stdio_filbuf (d_stdstdio.U):
4578 This variable defines how, given a FILE pointer, fp, to tell
4579 stdio to refill its internal buffers (?). This will
4580 be used to define the macro FILE_filbuf(fp).
4582 stdio_ptr (d_stdstdio.U):
4583 This variable defines how, given a FILE pointer, fp, to access the
4584 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4585 be used to define the macro FILE_ptr(fp).
4587 stdio_stream_array (stdio_streams.U):
4588 This variable tells the name of the array holding the stdio streams.
4589 Usual values include _iob, __iob, and __sF.
4591 strerror_r_proto (d_strerror_r.U):
4592 This variable encodes the prototype of strerror_r.
4593 It is zero if d_strerror_r is undef, and one of the
4594 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4597 strings (i_string.U):
4598 This variable holds the full path of the string header that will be
4599 used. Typically /usr/include/string.h or /usr/include/strings.h.
4602 This variable is defined but not used by Configure.
4603 The value is a plain '' and is not useful.
4605 subversion (patchlevel.U):
4606 The subversion level of this package.
4607 The value of subversion comes from the patchlevel.h file.
4608 In a version number such as 5.6.1, this is the "1".
4609 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4610 This is unique to perl.
4613 This variable holds the place where the manual is located on this
4614 system. It is not the place where the user wants to put his manual
4615 pages. Rather it is the place where Configure may look to find manual
4616 for unix commands (section 1 of the manual usually). See mansrc.
4619 This variable is defined but not used by Configure.
4620 The value is a plain '' and is not useful.
4623 This variable is defined but not used by Configure.
4624 The value is a plain '' and is not useful.
4626 targetarch (Cross.U):
4627 If cross-compiling, this variable contains the target architecture.
4628 If not, this will be empty.
4631 This variable is defined but not used by Configure.
4632 The value is a plain '' and is not useful.
4635 This variable is defined but not used by Configure.
4636 The value is a plain '' and is not useful.
4639 This variable is used internally by Configure to determine the
4640 full pathname (if any) of the test program. After Configure runs,
4641 the value is reset to a plain "test" and is not useful.
4643 timeincl (i_time.U):
4644 This variable holds the full path of the included time header(s).
4646 timetype (d_time.U):
4647 This variable holds the type returned by time(). It can be long,
4648 or time_t on BSD sites (in which case <sys/types.h> should be
4649 included). Anyway, the type Time_t should be used.
4651 tmpnam_r_proto (d_tmpnam_r.U):
4652 This variable encodes the prototype of tmpnam_r.
4653 It is zero if d_tmpnam_r is undef, and one of the
4654 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4658 This variable contains the command used by Configure
4659 to copy to from the target host. Useful and available
4660 only during Perl build.
4661 The string ':' if not cross-compiling.
4664 This variable is used internally by Configure to determine the
4665 full pathname (if any) of the touch program. After Configure runs,
4666 the value is reset to a plain "touch" and is not useful.
4669 This variable is used internally by Configure to determine the
4670 full pathname (if any) of the tr program. After Configure runs,
4671 the value is reset to a plain "tr" and is not useful.
4674 This variable contains the value to be passed to the tr(1)
4675 command to transliterate a newline. Typical values are
4676 '\012' and '\n'. This is needed for EBCDIC systems where
4677 newline is not necessarily '\012'.
4680 This variable is defined but not used by Configure.
4681 The value is a plain '' and is not useful.
4683 ttyname_r_proto (d_ttyname_r.U):
4684 This variable encodes the prototype of ttyname_r.
4685 It is zero if d_ttyname_r is undef, and one of the
4686 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4690 This variable is the size of an U16 in bytes.
4693 This variable contains the C type used for Perl's U16.
4696 This variable is the size of an U32 in bytes.
4699 This variable contains the C type used for Perl's U32.
4702 This variable is the size of an U64 in bytes.
4705 This variable contains the C type used for Perl's U64.
4708 This variable is the size of an U8 in bytes.
4711 This variable contains the C type used for Perl's U8.
4714 This variable contains the format string used for printing a Uid_t.
4716 uidsign (uidsign.U):
4717 This variable contains the signedness of a uidtype.
4718 1 for unsigned, -1 for signed.
4720 uidsize (uidsize.U):
4721 This variable contains the size of a uidtype in bytes.
4723 uidtype (uidtype.U):
4724 This variable defines Uid_t to be something like uid_t, int,
4725 ushort, or whatever type is used to declare user ids in the kernel.
4728 This variable is used internally by Configure to determine the
4729 full pathname (if any) of the uname program. After Configure runs,
4730 the value is reset to a plain "uname" and is not useful.
4733 This variable is used internally by Configure to determine the
4734 full pathname (if any) of the uniq program. After Configure runs,
4735 the value is reset to a plain "uniq" and is not useful.
4737 uquadtype (quadtype.U):
4738 This variable defines Uquad_t to be something like unsigned long,
4739 unsigned int, unsigned long long, uint64_t, or whatever type is
4740 used for 64-bit integers.
4742 use5005threads (usethreads.U):
4743 This variable conditionally defines the USE_5005THREADS symbol,
4744 and indicates that Perl should be built to use the 5.005-based
4745 threading implementation.
4747 use64bitall (use64bits.U):
4748 This variable conditionally defines the USE_64_BIT_ALL symbol,
4749 and indicates that 64-bit integer types should be used
4750 when available. The maximal possible
4751 64-bitness is employed: LP64 or ILP64, meaning that you will
4752 be able to use more than 2 gigabytes of memory. This mode is
4753 even more binary incompatible than USE_64_BIT_INT. You may not
4754 be able to run the resulting executable in a 32-bit CPU at all or
4755 you may need at least to reboot your OS to 64-bit mode.
4757 use64bitint (use64bits.U):
4758 This variable conditionally defines the USE_64_BIT_INT symbol,
4759 and indicates that 64-bit integer types should be used
4760 when available. The minimal possible 64-bitness
4761 is employed, just enough to get 64-bit integers into Perl.
4762 This may mean using for example "long longs", while your memory
4763 may still be limited to 2 gigabytes.
4765 usecrosscompile (Cross.U):
4766 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4767 and indicates that Perl has been cross-compiled.
4770 This variable indicates if the system supports dynamic
4771 loading of some sort. See also dlsrc and dlobj.
4773 usefaststdio (usefaststdio.U):
4774 This variable conditionally defines the USE_FAST_STDIO symbol,
4775 and indicates that Perl should be built to use 'fast stdio'.
4776 Defaults to define in Perls 5.8 and earlier, to undef later.
4778 useithreads (usethreads.U):
4779 This variable conditionally defines the USE_ITHREADS symbol,
4780 and indicates that Perl should be built to use the interpreter-based
4781 threading implementation.
4783 uselargefiles (uselfs.U):
4784 This variable conditionally defines the USE_LARGE_FILES symbol,
4785 and indicates that large file interfaces should be used when
4788 uselongdouble (uselongdbl.U):
4789 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4790 and indicates that long doubles should be used when available.
4792 usemallocwrap (mallocsrc.U):
4793 This variable contains y if we are wrapping malloc to prevent
4794 integer overflow during size calculations.
4796 usemorebits (usemorebits.U):
4797 This variable conditionally defines the USE_MORE_BITS symbol,
4798 and indicates that explicit 64-bit interfaces and long doubles
4799 should be used when available.
4801 usemultiplicity (usemultiplicity.U):
4802 This variable conditionally defines the MULTIPLICITY symbol,
4803 and indicates that Perl should be built to use multiplicity.
4805 usemymalloc (mallocsrc.U):
4806 This variable contains y if the malloc that comes with this package
4807 is desired over the system's version of malloc. People often include
4808 special versions of malloc for effiency, but such versions are often
4809 less portable. See also mallocsrc and mallocobj.
4810 If this is 'y', then -lmalloc is removed from $libs.
4813 This variable contains 'true' or 'false' depending whether the
4814 nm extraction is wanted or not.
4816 useopcode (Extensions.U):
4817 This variable holds either 'true' or 'false' to indicate
4818 whether the Opcode extension should be used. The sole
4819 use for this currently is to allow an easy mechanism
4820 for users to skip the Opcode extension from the Configure
4823 useperlio (useperlio.U):
4824 This variable conditionally defines the USE_PERLIO symbol,
4825 and indicates that the PerlIO abstraction should be
4828 useposix (Extensions.U):
4829 This variable holds either 'true' or 'false' to indicate
4830 whether the POSIX extension should be used. The sole
4831 use for this currently is to allow an easy mechanism
4832 for hints files to indicate that POSIX will not compile
4833 on a particular system.
4835 usereentrant (usethreads.U):
4836 This variable conditionally defines the USE_REENTRANT_API symbol,
4837 which indicates that the thread code may try to use the various
4838 _r versions of library functions. This is only potentially
4839 meaningful if usethreads is set and is very experimental, it is
4840 not even prompted for.
4842 userelocatableinc (bin.U):
4843 This variable is set to true to indicate that perl should relocate
4844 @INC entries at runtime based on the path to the perl binary.
4845 Any @INC paths starting ".../" are relocated relative to the directory
4846 containing the perl binary, and a logical cleanup of the path is then
4847 made around the join point (removing "dir/../" pairs)
4850 This variable is set to true when the user agrees to use sfio.
4851 It is set to false when sfio is not available or when the user
4852 explicitely requests not to use sfio. It is here primarily so
4853 that command-line settings can override the auto-detection of
4854 d_sfio without running into a "WHOA THERE".
4856 useshrplib (libperl.U):
4857 This variable is set to 'true' if the user wishes
4858 to build a shared libperl, and 'false' otherwise.
4860 usesitecustomize (d_sitecustomize.U):
4861 This variable is set to true when the user requires a mechanism that
4862 allows the sysadmin to add entries to @INC at runtime. This variable
4863 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
4865 usesocks (usesocks.U):
4866 This variable conditionally defines the USE_SOCKS symbol,
4867 and indicates that Perl should be built to use SOCKS.
4869 usethreads (usethreads.U):
4870 This variable conditionally defines the USE_THREADS symbol,
4871 and indicates that Perl should be built to use threads.
4873 usevendorprefix (vendorprefix.U):
4874 This variable tells whether the vendorprefix
4875 and consequently other vendor* paths are in use.
4877 usevfork (d_vfork.U):
4878 This variable is set to true when the user accepts to use vfork.
4879 It is set to false when no vfork is available or when the user
4880 explicitely requests not to use vfork.
4883 This variable holds the path of the include files, which is
4884 usually /usr/include. It is mainly used by other Configure units.
4887 This variable is defined but not used by Configure.
4888 The value is a plain '' and is not useful.
4890 uvoformat (perlxvf.U):
4891 This variable contains the format string used for printing
4892 a Perl UV as an unsigned octal integer.
4895 This variable is the size of a UV in bytes.
4898 This variable contains the C type used for Perl's UV.
4900 uvuformat (perlxvf.U):
4901 This variable contains the format string used for printing
4902 a Perl UV as an unsigned decimal integer.
4904 uvxformat (perlxvf.U):
4905 This variable contains the format string used for printing
4906 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4908 uvXUformat (perlxvf.U):
4909 This variable contains the format string used for printing
4910 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4912 vendorarch (vendorarch.U):
4913 This variable contains the value of the PERL_VENDORARCH symbol.
4914 It may have a ~ on the front.
4915 The standard distribution will put nothing in this directory.
4916 Vendors who distribute perl may wish to place their own
4917 architecture-dependent modules and extensions in this directory with
4918 MakeMaker Makefile.PL INSTALLDIRS=vendor
4919 or equivalent. See INSTALL for details.
4921 vendorarchexp (vendorarch.U):
4922 This variable is the ~name expanded version of vendorarch, so that you
4923 may use it directly in Makefiles or shell scripts.
4925 vendorbin (vendorbin.U):
4926 This variable contains the eventual value of the VENDORBIN symbol.
4927 It may have a ~ on the front.
4928 The standard distribution will put nothing in this directory.
4929 Vendors who distribute perl may wish to place additional
4930 binaries in this directory with
4931 MakeMaker Makefile.PL INSTALLDIRS=vendor
4932 or equivalent. See INSTALL for details.
4934 vendorbinexp (vendorbin.U):
4935 This variable is the ~name expanded version of vendorbin, so that you
4936 may use it directly in Makefiles or shell scripts.
4938 vendorhtml1dir (vendorhtml1dir.U):
4939 This variable contains the name of the directory for html
4940 pages. It may have a ~ on the front.
4941 The standard distribution will put nothing in this directory.
4942 Vendors who distribute perl may wish to place their own
4943 html pages in this directory with
4944 MakeMaker Makefile.PL INSTALLDIRS=vendor
4945 or equivalent. See INSTALL for details.
4947 vendorhtml1direxp (vendorhtml1dir.U):
4948 This variable is the ~name expanded version of vendorhtml1dir, so that you
4949 may use it directly in Makefiles or shell scripts.
4951 vendorhtml3dir (vendorhtml3dir.U):
4952 This variable contains the name of the directory for html
4953 library pages. It may have a ~ on the front.
4954 The standard distribution will put nothing in this directory.
4955 Vendors who distribute perl may wish to place their own
4956 html pages for modules and extensions in this directory with
4957 MakeMaker Makefile.PL INSTALLDIRS=vendor
4958 or equivalent. See INSTALL for details.
4960 vendorhtml3direxp (vendorhtml3dir.U):
4961 This variable is the ~name expanded version of vendorhtml3dir, so that you
4962 may use it directly in Makefiles or shell scripts.
4964 vendorlib (vendorlib.U):
4965 This variable contains the eventual value of the VENDORLIB symbol,
4966 which is the name of the private library for this package.
4967 The standard distribution will put nothing in this directory.
4968 Vendors who distribute perl may wish to place their own
4969 modules in this directory with
4970 MakeMaker Makefile.PL INSTALLDIRS=vendor
4971 or equivalent. See INSTALL for details.
4973 vendorlib_stem (vendorlib.U):
4974 This variable is $vendorlibexp with any trailing version-specific component
4975 removed. The elements in inc_version_list (inc_version_list.U) can
4976 be tacked onto this variable to generate a list of directories to search.
4978 vendorlibexp (vendorlib.U):
4979 This variable is the ~name expanded version of vendorlib, so that you
4980 may use it directly in Makefiles or shell scripts.
4982 vendorman1dir (vendorman1dir.U):
4983 This variable contains the name of the directory for man1
4984 pages. It may have a ~ on the front.
4985 The standard distribution will put nothing in this directory.
4986 Vendors who distribute perl may wish to place their own
4987 man1 pages in this directory with
4988 MakeMaker Makefile.PL INSTALLDIRS=vendor
4989 or equivalent. See INSTALL for details.
4991 vendorman1direxp (vendorman1dir.U):
4992 This variable is the ~name expanded version of vendorman1dir, so that you
4993 may use it directly in Makefiles or shell scripts.
4995 vendorman3dir (vendorman3dir.U):
4996 This variable contains the name of the directory for man3
4997 pages. It may have a ~ on the front.
4998 The standard distribution will put nothing in this directory.
4999 Vendors who distribute perl may wish to place their own
5000 man3 pages in this directory with
5001 MakeMaker Makefile.PL INSTALLDIRS=vendor
5002 or equivalent. See INSTALL for details.
5004 vendorman3direxp (vendorman3dir.U):
5005 This variable is the ~name expanded version of vendorman3dir, so that you
5006 may use it directly in Makefiles or shell scripts.
5008 vendorprefix (vendorprefix.U):
5009 This variable holds the full absolute path of the directory below
5010 which the vendor will install add-on packages.
5011 See INSTALL for usage and examples.
5013 vendorprefixexp (vendorprefix.U):
5014 This variable holds the full absolute path of the directory below
5015 which the vendor will install add-on packages. Derived from vendorprefix.
5017 vendorscript (vendorscript.U):
5018 This variable contains the eventual value of the VENDORSCRIPT symbol.
5019 It may have a ~ on the front.
5020 The standard distribution will put nothing in this directory.
5021 Vendors who distribute perl may wish to place additional
5022 executable scripts in this directory with
5023 MakeMaker Makefile.PL INSTALLDIRS=vendor
5024 or equivalent. See INSTALL for details.
5026 vendorscriptexp (vendorscript.U):
5027 This variable is the ~name expanded version of vendorscript, so that you
5028 may use it directly in Makefiles or shell scripts.
5030 version (patchlevel.U):
5031 The full version number of this package, such as 5.6.1 (or 5_6_1).
5032 This combines revision, patchlevel, and subversion to get the
5033 full version number, including any possible subversions.
5034 This is suitable for use as a directory name, and hence is
5035 filesystem dependent.
5037 version_patchlevel_string (patchlevel.U):
5038 This is a string combining version, subversion and
5039 perl_patchlevel (if perl_patchlevel is non-zero).
5040 It is typically something like
5041 'version 7 subversion 1' or
5042 'version 7 subversion 1 patchlevel 11224'
5043 It is computed here to avoid duplication of code in myconfig.SH
5046 versiononly (versiononly.U):
5047 If set, this symbol indicates that only the version-specific
5048 components of a perl installation should be installed.
5049 This may be useful for making a test installation of a new
5050 version without disturbing the existing installation.
5051 Setting versiononly is equivalent to setting installperl's -v option.
5052 In particular, the non-versioned scripts and programs such as
5053 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5054 (see INSTALL for a more complete list). Nor are the man
5056 Usually, this is undef.
5059 This variable is defined but not used by Configure.
5060 The value is a plain '' and is not useful.
5062 voidflags (voidflags.U):
5063 This variable contains the eventual value of the VOIDFLAGS symbol,
5064 which indicates how much support of the void type is given by this
5065 compiler. See VOIDFLAGS for more info.
5068 This variable holds extra path (space-separated) used to find
5069 libraries on this platform, for example CPU-specific libraries
5070 (on multi-CPU platforms) may be listed here.
5073 This variable holds the name of the compiler compiler we
5074 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5077 This variable contains any additional yacc flags desired by the
5078 user. It is up to the Makefile to use this.
5081 This variable is defined but not used by Configure.
5082 The value is a plain '' and is not useful.
5085 This variable is used internally by Configure to determine the
5086 full pathname (if any) of the zip program. After Configure runs,
5087 the value is reset to a plain "zip" and is not useful.