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_PRIo64 (quadfio.U):
1545 This variable conditionally defines the PERL_PRIo64 symbol, which
1546 indiciates that stdio has a symbol to print 64-bit octal numbers.
1548 d_PRIu64 (quadfio.U):
1549 This variable conditionally defines the PERL_PRIu64 symbol, which
1550 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1553 d_PRIx64 (quadfio.U):
1554 This variable conditionally defines the PERL_PRIx64 symbol, which
1555 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1557 d_PRIXU64 (quadfio.U):
1558 This variable conditionally defines the PERL_PRIXU64 symbol, which
1559 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1560 The 'U' in the name is to separate this from d_PRIx64 so that even
1561 case-blind systems can see the difference.
1563 d_procselfexe (d_procselfexe.U):
1564 Defined if $procselfexe is symlink to the absolute
1565 pathname of the executing program.
1567 d_pthread_atfork (d_pthread_atfork.U):
1568 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1569 which indicates to the C program that the pthread_atfork()
1570 routine is available.
1572 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1573 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1574 pthread_attr_setscope() is available to set the contention scope
1575 attribute of a thread attribute object.
1577 d_pthread_yield (d_pthread_y.U):
1578 This variable conditionally defines the HAS_PTHREAD_YIELD
1579 symbol if the pthread_yield routine is available to yield
1580 the execution of the current thread.
1583 This variable conditionally defines PWAGE, which indicates
1584 that struct passwd contains pw_age.
1586 d_pwchange (i_pwd.U):
1587 This variable conditionally defines PWCHANGE, which indicates
1588 that struct passwd contains pw_change.
1590 d_pwclass (i_pwd.U):
1591 This variable conditionally defines PWCLASS, which indicates
1592 that struct passwd contains pw_class.
1594 d_pwcomment (i_pwd.U):
1595 This variable conditionally defines PWCOMMENT, which indicates
1596 that struct passwd contains pw_comment.
1598 d_pwexpire (i_pwd.U):
1599 This variable conditionally defines PWEXPIRE, which indicates
1600 that struct passwd contains pw_expire.
1602 d_pwgecos (i_pwd.U):
1603 This variable conditionally defines PWGECOS, which indicates
1604 that struct passwd contains pw_gecos.
1606 d_pwpasswd (i_pwd.U):
1607 This variable conditionally defines PWPASSWD, which indicates
1608 that struct passwd contains pw_passwd.
1610 d_pwquota (i_pwd.U):
1611 This variable conditionally defines PWQUOTA, which indicates
1612 that struct passwd contains pw_quota.
1614 d_qgcvt (d_qgcvt.U):
1615 This variable conditionally defines the HAS_QGCVT symbol, which
1616 indicates to the C program that the qgcvt() routine is available.
1618 d_quad (quadtype.U):
1619 This variable, if defined, tells that there's a 64-bit integer type,
1622 d_random_r (d_random_r.U):
1623 This variable conditionally defines the HAS_RANDOM_R symbol,
1624 which indicates to the C program that the random_r()
1625 routine is available.
1627 d_readdir (d_readdir.U):
1628 This variable conditionally defines HAS_READDIR if readdir() is
1629 available to read directory entries.
1631 d_readdir64_r (d_readdir64_r.U):
1632 This variable conditionally defines the HAS_READDIR64_R symbol,
1633 which indicates to the C program that the readdir64_r()
1634 routine is available.
1636 d_readdir_r (d_readdir_r.U):
1637 This variable conditionally defines the HAS_READDIR_R symbol,
1638 which indicates to the C program that the readdir_r()
1639 routine is available.
1641 d_readlink (d_readlink.U):
1642 This variable conditionally defines the HAS_READLINK symbol, which
1643 indicates to the C program that the readlink() routine is available
1644 to read the value of a symbolic link.
1646 d_readv (d_readv.U):
1647 This variable conditionally defines the HAS_READV symbol, which
1648 indicates to the C program that the readv() routine is available.
1650 d_recvmsg (d_recvmsg.U):
1651 This variable conditionally defines the HAS_RECVMSG symbol, which
1652 indicates to the C program that the recvmsg() routine is available.
1654 d_rename (d_rename.U):
1655 This variable conditionally defines the HAS_RENAME symbol, which
1656 indicates to the C program that the rename() routine is available
1659 d_rewinddir (d_readdir.U):
1660 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1663 d_rmdir (d_rmdir.U):
1664 This variable conditionally defines HAS_RMDIR if rmdir() is
1665 available to remove directories.
1667 d_safebcpy (d_safebcpy.U):
1668 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1669 the bcopy() routine can do overlapping copies. Normally, you
1670 should probably use memmove().
1672 d_safemcpy (d_safemcpy.U):
1673 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1674 the memcpy() routine can do overlapping copies.
1675 For overlapping copies, memmove() should be used, if available.
1677 d_sanemcmp (d_sanemcmp.U):
1678 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1679 the memcpy() routine is available and can be used to compare relative
1680 magnitudes of chars with their high bits set.
1682 d_sbrkproto (d_sbrkproto.U):
1683 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1684 which indicates to the C program that the system provides
1685 a prototype for the sbrk() function. Otherwise, it is
1686 up to the program to supply one.
1688 d_scalbnl (d_scalbnl.U):
1689 This variable conditionally defines the HAS_SCALBNL symbol, which
1690 indicates to the C program that the scalbnl() routine is available.
1691 If ilogbl is also present we can emulate frexpl.
1693 d_sched_yield (d_pthread_y.U):
1694 This variable conditionally defines the HAS_SCHED_YIELD
1695 symbol if the sched_yield routine is available to yield
1696 the execution of the current thread.
1698 d_scm_rights (d_socket.U):
1699 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1700 which indicates that the SCM_RIGHTS is available. #ifdef is
1701 not enough because it may be an enum, glibc has been known to do this.
1703 d_SCNfldbl (longdblfio.U):
1704 This variable conditionally defines the PERL_PRIfldbl symbol, which
1705 indiciates that stdio has a symbol to scan long doubles.
1707 d_seekdir (d_readdir.U):
1708 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1711 d_select (d_select.U):
1712 This variable conditionally defines HAS_SELECT if select() is
1713 available to select active file descriptors. A <sys/time.h>
1714 inclusion may be necessary for the timeout field.
1717 This variable conditionally defines the HAS_SEM symbol, which
1718 indicates that the entire sem*(2) library is present.
1720 d_semctl (d_semctl.U):
1721 This variable conditionally defines the HAS_SEMCTL symbol, which
1722 indicates to the C program that the semctl() routine is available.
1724 d_semctl_semid_ds (d_union_semun.U):
1725 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1726 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1728 d_semctl_semun (d_union_semun.U):
1729 This variable conditionally defines USE_SEMCTL_SEMUN, which
1730 indicates that union semun is to be used for semctl IPC_STAT.
1732 d_semget (d_semget.U):
1733 This variable conditionally defines the HAS_SEMGET symbol, which
1734 indicates to the C program that the semget() routine is available.
1736 d_semop (d_semop.U):
1737 This variable conditionally defines the HAS_SEMOP symbol, which
1738 indicates to the C program that the semop() routine is available.
1740 d_sendmsg (d_sendmsg.U):
1741 This variable conditionally defines the HAS_SENDMSG symbol, which
1742 indicates to the C program that the sendmsg() routine is available.
1744 d_setegid (d_setegid.U):
1745 This variable conditionally defines the HAS_SETEGID symbol, which
1746 indicates to the C program that the setegid() routine is available
1747 to change the effective gid of the current program.
1749 d_seteuid (d_seteuid.U):
1750 This variable conditionally defines the HAS_SETEUID symbol, which
1751 indicates to the C program that the seteuid() routine is available
1752 to change the effective uid of the current program.
1754 d_setgrent (d_setgrent.U):
1755 This variable conditionally defines the HAS_SETGRENT symbol, which
1756 indicates to the C program that the setgrent() routine is available
1757 for initializing sequential access to the group database.
1759 d_setgrent_r (d_setgrent_r.U):
1760 This variable conditionally defines the HAS_SETGRENT_R symbol,
1761 which indicates to the C program that the setgrent_r()
1762 routine is available.
1764 d_setgrps (d_setgrps.U):
1765 This variable conditionally defines the HAS_SETGROUPS symbol, which
1766 indicates to the C program that the setgroups() routine is available
1767 to set the list of process groups.
1769 d_sethent (d_sethent.U):
1770 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1773 d_sethostent_r (d_sethostent_r.U):
1774 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1775 which indicates to the C program that the sethostent_r()
1776 routine is available.
1778 d_setitimer (d_setitimer.U):
1779 This variable conditionally defines the HAS_SETITIMER symbol, which
1780 indicates to the C program that the setitimer() routine is available.
1782 d_setlinebuf (d_setlnbuf.U):
1783 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1784 indicates to the C program that the setlinebuf() routine is available
1785 to change stderr or stdout from block-buffered or unbuffered to a
1788 d_setlocale (d_setlocale.U):
1789 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1790 available to handle locale-specific ctype implementations.
1792 d_setlocale_r (d_setlocale_r.U):
1793 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1794 which indicates to the C program that the setlocale_r()
1795 routine is available.
1797 d_setnent (d_setnent.U):
1798 This variable conditionally defines HAS_SETNETENT if setnetent() is
1801 d_setnetent_r (d_setnetent_r.U):
1802 This variable conditionally defines the HAS_SETNETENT_R symbol,
1803 which indicates to the C program that the setnetent_r()
1804 routine is available.
1806 d_setpent (d_setpent.U):
1807 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1810 d_setpgid (d_setpgid.U):
1811 This variable conditionally defines the HAS_SETPGID symbol if the
1812 setpgid(pid, gpid) function is available to set process group ID.
1814 d_setpgrp (d_setpgrp.U):
1815 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1816 available to set the current process group.
1818 d_setpgrp2 (d_setpgrp2.U):
1819 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1820 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1821 is available to set the current process group.
1823 d_setprior (d_setprior.U):
1824 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1825 is available to set a process's priority.
1827 d_setproctitle (d_setproctitle.U):
1828 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1829 which indicates to the C program that the setproctitle() routine
1832 d_setprotoent_r (d_setprotoent_r.U):
1833 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1834 which indicates to the C program that the setprotoent_r()
1835 routine is available.
1837 d_setpwent (d_setpwent.U):
1838 This variable conditionally defines the HAS_SETPWENT symbol, which
1839 indicates to the C program that the setpwent() routine is available
1840 for initializing sequential access to the passwd database.
1842 d_setpwent_r (d_setpwent_r.U):
1843 This variable conditionally defines the HAS_SETPWENT_R symbol,
1844 which indicates to the C program that the setpwent_r()
1845 routine is available.
1847 d_setregid (d_setregid.U):
1848 This variable conditionally defines HAS_SETREGID if setregid() is
1849 available to change the real and effective gid of the current
1852 d_setresgid (d_setregid.U):
1853 This variable conditionally defines HAS_SETRESGID if setresgid() is
1854 available to change the real, effective and saved gid of the current
1857 d_setresuid (d_setreuid.U):
1858 This variable conditionally defines HAS_SETREUID if setresuid() is
1859 available to change the real, effective and saved uid of the current
1862 d_setreuid (d_setreuid.U):
1863 This variable conditionally defines HAS_SETREUID if setreuid() is
1864 available to change the real and effective uid of the current
1867 d_setrgid (d_setrgid.U):
1868 This variable conditionally defines the HAS_SETRGID symbol, which
1869 indicates to the C program that the setrgid() routine is available
1870 to change the real gid of the current program.
1872 d_setruid (d_setruid.U):
1873 This variable conditionally defines the HAS_SETRUID symbol, which
1874 indicates to the C program that the setruid() routine is available
1875 to change the real uid of the current program.
1877 d_setsent (d_setsent.U):
1878 This variable conditionally defines HAS_SETSERVENT if setservent() is
1881 d_setservent_r (d_setservent_r.U):
1882 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1883 which indicates to the C program that the setservent_r()
1884 routine is available.
1886 d_setsid (d_setsid.U):
1887 This variable conditionally defines HAS_SETSID if setsid() is
1888 available to set the process group ID.
1890 d_setvbuf (d_setvbuf.U):
1891 This variable conditionally defines the HAS_SETVBUF symbol, which
1892 indicates to the C program that the setvbuf() routine is available
1893 to change buffering on an open stdio stream.
1896 This variable conditionally defines the USE_SFIO symbol,
1897 and indicates whether sfio is available (and should be used).
1900 This variable conditionally defines the HAS_SHM symbol, which
1901 indicates that the entire shm*(2) library is present.
1903 d_shmat (d_shmat.U):
1904 This variable conditionally defines the HAS_SHMAT symbol, which
1905 indicates to the C program that the shmat() routine is available.
1907 d_shmatprototype (d_shmat.U):
1908 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1909 symbol, which indicates that sys/shm.h has a prototype for
1912 d_shmctl (d_shmctl.U):
1913 This variable conditionally defines the HAS_SHMCTL symbol, which
1914 indicates to the C program that the shmctl() routine is available.
1916 d_shmdt (d_shmdt.U):
1917 This variable conditionally defines the HAS_SHMDT symbol, which
1918 indicates to the C program that the shmdt() routine is available.
1920 d_shmget (d_shmget.U):
1921 This variable conditionally defines the HAS_SHMGET symbol, which
1922 indicates to the C program that the shmget() routine is available.
1924 d_sigaction (d_sigaction.U):
1925 This variable conditionally defines the HAS_SIGACTION symbol, which
1926 indicates that the Vr4 sigaction() routine is available.
1928 d_sigprocmask (d_sigprocmask.U):
1929 This variable conditionally defines HAS_SIGPROCMASK
1930 if sigprocmask() is available to examine or change the signal mask
1931 of the calling process.
1933 d_sigsetjmp (d_sigsetjmp.U):
1934 This variable conditionally defines the HAS_SIGSETJMP symbol,
1935 which indicates that the sigsetjmp() routine is available to
1936 call setjmp() and optionally save the process's signal mask.
1938 d_sitearch (sitearch.U):
1939 This variable conditionally defines SITEARCH to hold the pathname
1940 of architecture-dependent library files for $package. If
1941 $sitearch is the same as $archlib, then this is set to undef.
1943 d_snprintf (d_snprintf.U):
1944 This variable conditionally defines the HAS_SNPRINTF symbol, which
1945 indicates to the C program that the snprintf () library function
1948 d_sockatmark (d_sockatmark.U):
1949 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1950 indicates to the C program that the sockatmark() routine is available.
1952 d_sockatmarkproto (d_sockatmarkproto.U):
1953 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1954 which indicates to the C program that the system provides
1955 a prototype for the sockatmark() function. Otherwise, it is
1956 up to the program to supply one.
1958 d_socket (d_socket.U):
1959 This variable conditionally defines HAS_SOCKET, which indicates
1960 that the BSD socket interface is supported.
1962 d_socklen_t (d_socklen_t.U):
1963 This symbol will be defined if the C compiler supports socklen_t.
1965 d_sockpair (d_socket.U):
1966 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1967 indicates that the BSD socketpair() is supported.
1969 d_socks5_init (d_socks5_init.U):
1970 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1971 indicates to the C program that the socks5_init() routine is available.
1973 d_sprintf_returns_strlen (d_sprintf_len.U):
1974 This variable defines whether sprintf returns the length of the string
1975 (as per the ANSI spec). Some C libraries retain compatibility with
1976 pre-ANSI C and return a pointer to the passed in buffer; for these
1977 this variable will be undef.
1979 d_sqrtl (d_sqrtl.U):
1980 This variable conditionally defines the HAS_SQRTL symbol, which
1981 indicates to the C program that the sqrtl() routine is available.
1983 d_srand48_r (d_srand48_r.U):
1984 This variable conditionally defines the HAS_SRAND48_R symbol,
1985 which indicates to the C program that the srand48_r()
1986 routine is available.
1988 d_srandom_r (d_srandom_r.U):
1989 This variable conditionally defines the HAS_SRANDOM_R symbol,
1990 which indicates to the C program that the srandom_r()
1991 routine is available.
1993 d_sresgproto (d_sresgproto.U):
1994 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1995 which indicates to the C program that the system provides
1996 a prototype for the setresgid() function. Otherwise, it is
1997 up to the program to supply one.
1999 d_sresuproto (d_sresuproto.U):
2000 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2001 which indicates to the C program that the system provides
2002 a prototype for the setresuid() function. Otherwise, it is
2003 up to the program to supply one.
2005 d_statblks (d_statblks.U):
2006 This variable conditionally defines USE_STAT_BLOCKS
2007 if this system has a stat structure declaring
2008 st_blksize and st_blocks.
2010 d_statfs_f_flags (d_statfs_f_flags.U):
2011 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2012 symbol, which indicates to struct statfs from has f_flags member.
2013 This kind of struct statfs is coming from sys/mount.h (BSD),
2014 not from sys/statfs.h (SYSV).
2016 d_statfs_s (d_statfs_s.U):
2017 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2018 which indicates that the struct statfs is supported.
2020 d_statvfs (d_statvfs.U):
2021 This variable conditionally defines the HAS_STATVFS symbol, which
2022 indicates to the C program that the statvfs() routine is available.
2024 d_stdio_cnt_lval (d_stdstdio.U):
2025 This variable conditionally defines STDIO_CNT_LVALUE if the
2026 FILE_cnt macro can be used as an lvalue.
2028 d_stdio_ptr_lval (d_stdstdio.U):
2029 This variable conditionally defines STDIO_PTR_LVALUE if the
2030 FILE_ptr macro can be used as an lvalue.
2032 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2033 This symbol is defined if using the FILE_ptr macro as an lvalue
2034 to increase the pointer by n leaves File_cnt(fp) unchanged.
2036 d_stdio_ptr_lval_sets_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 has the side effect of decreasing the
2039 value of File_cnt(fp) by n.
2041 d_stdio_stream_array (stdio_streams.U):
2042 This variable tells whether there is an array holding
2045 d_stdiobase (d_stdstdio.U):
2046 This variable conditionally defines USE_STDIO_BASE if this system
2047 has a FILE structure declaring a usable _base field (or equivalent)
2050 d_stdstdio (d_stdstdio.U):
2051 This variable conditionally defines USE_STDIO_PTR if this system
2052 has a FILE structure declaring usable _ptr and _cnt fields (or
2053 equivalent) in stdio.h.
2055 d_strchr (d_strchr.U):
2056 This variable conditionally defines HAS_STRCHR if strchr() and
2057 strrchr() are available for string searching.
2059 d_strcoll (d_strcoll.U):
2060 This variable conditionally defines HAS_STRCOLL if strcoll() is
2061 available to compare strings using collating information.
2063 d_strctcpy (d_strctcpy.U):
2064 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2065 indicates to the C program that this C compiler knows how to copy
2068 d_strerrm (d_strerror.U):
2069 This variable holds what Strerrr is defined as to translate an error
2070 code condition into an error message string. It could be 'strerror'
2071 or a more complex macro emulating strrror with sys_errlist[], or the
2072 "unknown" string when both strerror and sys_errlist are missing.
2074 d_strerror (d_strerror.U):
2075 This variable conditionally defines HAS_STRERROR if strerror() is
2076 available to translate error numbers to strings.
2078 d_strerror_r (d_strerror_r.U):
2079 This variable conditionally defines the HAS_STRERROR_R symbol,
2080 which indicates to the C program that the strerror_r()
2081 routine is available.
2083 d_strftime (d_strftime.U):
2084 This variable conditionally defines the HAS_STRFTIME symbol, which
2085 indicates to the C program that the strftime() routine is available.
2087 d_strlcat (d_strlcat.U):
2088 This variable conditionally defines the HAS_STRLCAT symbol, which
2089 indicates to the C program that the strlcat () routine is available.
2091 d_strlcpy (d_strlcpy.U):
2092 This variable conditionally defines the HAS_STRLCPY symbol, which
2093 indicates to the C program that the strlcpy () routine is available.
2095 d_strtod (d_strtod.U):
2096 This variable conditionally defines the HAS_STRTOD symbol, which
2097 indicates to the C program that the strtod() routine is available
2098 to provide better numeric string conversion than atof().
2100 d_strtol (d_strtol.U):
2101 This variable conditionally defines the HAS_STRTOL symbol, which
2102 indicates to the C program that the strtol() routine is available
2103 to provide better numeric string conversion than atoi() and friends.
2105 d_strtold (d_strtold.U):
2106 This variable conditionally defines the HAS_STRTOLD symbol, which
2107 indicates to the C program that the strtold() routine is available.
2109 d_strtoll (d_strtoll.U):
2110 This variable conditionally defines the HAS_STRTOLL symbol, which
2111 indicates to the C program that the strtoll() routine is available.
2113 d_strtoq (d_strtoq.U):
2114 This variable conditionally defines the HAS_STRTOQ symbol, which
2115 indicates to the C program that the strtoq() routine is available.
2117 d_strtoul (d_strtoul.U):
2118 This variable conditionally defines the HAS_STRTOUL symbol, which
2119 indicates to the C program that the strtoul() routine is available
2120 to provide conversion of strings to unsigned long.
2122 d_strtoull (d_strtoull.U):
2123 This variable conditionally defines the HAS_STRTOULL symbol, which
2124 indicates to the C program that the strtoull() routine is available.
2126 d_strtouq (d_strtouq.U):
2127 This variable conditionally defines the HAS_STRTOUQ symbol, which
2128 indicates to the C program that the strtouq() routine is available.
2130 d_strxfrm (d_strxfrm.U):
2131 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2132 available to transform strings.
2134 d_suidsafe (d_dosuid.U):
2135 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2136 if setuid scripts can be secure. This test looks in /dev/fd/.
2138 d_symlink (d_symlink.U):
2139 This variable conditionally defines the HAS_SYMLINK symbol, which
2140 indicates to the C program that the symlink() routine is available
2141 to create symbolic links.
2143 d_syscall (d_syscall.U):
2144 This variable conditionally defines HAS_SYSCALL if syscall() is
2145 available call arbitrary system calls.
2147 d_syscallproto (d_syscallproto.U):
2148 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2149 which indicates to the C program that the system provides
2150 a prototype for the syscall() function. Otherwise, it is
2151 up to the program to supply one.
2153 d_sysconf (d_sysconf.U):
2154 This variable conditionally defines the HAS_SYSCONF symbol, which
2155 indicates to the C program that the sysconf() routine is available
2156 to determine system related limits and options.
2158 d_sysernlst (d_strerror.U):
2159 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2160 is available to translate error numbers to the symbolic name.
2162 d_syserrlst (d_strerror.U):
2163 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2164 available to translate error numbers to strings.
2166 d_system (d_system.U):
2167 This variable conditionally defines HAS_SYSTEM if system() is
2168 available to issue a shell command.
2170 d_tcgetpgrp (d_tcgtpgrp.U):
2171 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2172 indicates to the C program that the tcgetpgrp() routine is available.
2173 to get foreground process group ID.
2175 d_tcsetpgrp (d_tcstpgrp.U):
2176 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2177 indicates to the C program that the tcsetpgrp() routine is available
2178 to set foreground process group ID.
2180 d_telldir (d_readdir.U):
2181 This variable conditionally defines HAS_TELLDIR if telldir() is
2184 d_telldirproto (d_telldirproto.U):
2185 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2186 which indicates to the C program that the system provides
2187 a prototype for the telldir() function. Otherwise, it is
2188 up to the program to supply one.
2191 This variable conditionally defines the HAS_TIME symbol, which indicates
2192 that the time() routine exists. The time() routine is normaly
2193 provided on UNIX systems.
2195 d_times (d_times.U):
2196 This variable conditionally defines the HAS_TIMES symbol, which indicates
2197 that the times() routine exists. The times() routine is normaly
2198 provided on UNIX systems. You may have to include <sys/times.h>.
2200 d_tm_tm_gmtoff (i_time.U):
2201 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2202 indicates to the C program that the struct tm has the tm_gmtoff field.
2204 d_tm_tm_zone (i_time.U):
2205 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2206 indicates to the C program that the struct tm has the tm_zone field.
2208 d_tmpnam_r (d_tmpnam_r.U):
2209 This variable conditionally defines the HAS_TMPNAM_R symbol,
2210 which indicates to the C program that the tmpnam_r()
2211 routine is available.
2213 d_truncate (d_truncate.U):
2214 This variable conditionally defines HAS_TRUNCATE if truncate() is
2215 available to truncate files.
2217 d_ttyname_r (d_ttyname_r.U):
2218 This variable conditionally defines the HAS_TTYNAME_R symbol,
2219 which indicates to the C program that the ttyname_r()
2220 routine is available.
2222 d_tzname (d_tzname.U):
2223 This variable conditionally defines HAS_TZNAME if tzname[] is
2224 available to access timezone names.
2226 d_u32align (d_u32align.U):
2227 This variable tells whether you must access character data
2228 through U32-aligned pointers.
2230 d_ualarm (d_ualarm.U):
2231 This variable conditionally defines the HAS_UALARM symbol, which
2232 indicates to the C program that the ualarm() routine is available.
2234 d_umask (d_umask.U):
2235 This variable conditionally defines the HAS_UMASK symbol, which
2236 indicates to the C program that the umask() routine is available.
2237 to set and get the value of the file creation mask.
2239 d_uname (d_gethname.U):
2240 This variable conditionally defines the HAS_UNAME symbol, which
2241 indicates to the C program that the uname() routine may be
2242 used to derive the host name.
2244 d_union_semun (d_union_semun.U):
2245 This variable conditionally defines HAS_UNION_SEMUN if the
2246 union semun is defined by including <sys/sem.h>.
2248 d_unordered (d_unordered.U):
2249 This variable conditionally defines the HAS_UNORDERED symbol, which
2250 indicates to the C program that the unordered() routine is available.
2252 d_unsetenv (d_unsetenv.U):
2253 This variable conditionally defines the HAS_UNSETENV symbol, which
2254 indicates to the C program that the unsetenv () routine is available.
2256 d_usleep (d_usleep.U):
2257 This variable conditionally defines HAS_USLEEP if usleep() is
2258 available to do high granularity sleeps.
2260 d_usleepproto (d_usleepproto.U):
2261 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2262 which indicates to the C program that the system provides
2263 a prototype for the usleep() function. Otherwise, it is
2264 up to the program to supply one.
2266 d_ustat (d_ustat.U):
2267 This variable conditionally defines HAS_USTAT if ustat() is
2268 available to query file system statistics by dev_t.
2270 d_vendorarch (vendorarch.U):
2271 This variable conditionally defined PERL_VENDORARCH.
2273 d_vendorbin (vendorbin.U):
2274 This variable conditionally defines PERL_VENDORBIN.
2276 d_vendorlib (vendorlib.U):
2277 This variable conditionally defines PERL_VENDORLIB.
2279 d_vendorscript (vendorscript.U):
2280 This variable conditionally defines PERL_VENDORSCRIPT.
2282 d_vfork (d_vfork.U):
2283 This variable conditionally defines the HAS_VFORK symbol, which
2284 indicates the vfork() routine is available.
2286 d_void_closedir (d_closedir.U):
2287 This variable conditionally defines VOID_CLOSEDIR if closedir()
2288 does not return a value.
2290 d_voidsig (d_voidsig.U):
2291 This variable conditionally defines VOIDSIG if this system
2292 declares "void (*signal(...))()" in signal.h. The old way was to
2293 declare it as "int (*signal(...))()".
2295 d_voidtty (i_sysioctl.U):
2296 This variable conditionally defines USE_IOCNOTTY to indicate that the
2297 ioctl() call with TIOCNOTTY should be used to void tty association.
2298 Otherwise (on USG probably), it is enough to close the standard file
2299 decriptors and do a setpgrp().
2301 d_volatile (d_volatile.U):
2302 This variable conditionally defines the HASVOLATILE symbol, which
2303 indicates to the C program that this C compiler knows about the
2304 volatile declaration.
2306 d_vprintf (d_vprintf.U):
2307 This variable conditionally defines the HAS_VPRINTF symbol, which
2308 indicates to the C program that the vprintf() routine is available
2309 to printf with a pointer to an argument list.
2311 d_vsnprintf (d_snprintf.U):
2312 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2313 indicates to the C program that the vsnprintf () library function
2316 d_wait4 (d_wait4.U):
2317 This variable conditionally defines the HAS_WAIT4 symbol, which
2318 indicates the wait4() routine is available.
2320 d_waitpid (d_waitpid.U):
2321 This variable conditionally defines HAS_WAITPID if waitpid() is
2322 available to wait for child process.
2324 d_wcstombs (d_wcstombs.U):
2325 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2326 indicates to the C program that the wcstombs() routine is available
2327 to convert wide character strings to multibyte strings.
2329 d_wctomb (d_wctomb.U):
2330 This variable conditionally defines the HAS_WCTOMB symbol, which
2331 indicates to the C program that the wctomb() routine is available
2332 to convert a wide character to a multibyte.
2334 d_writev (d_writev.U):
2335 This variable conditionally defines the HAS_WRITEV symbol, which
2336 indicates to the C program that the writev() routine is available.
2339 This variable conditionally defines the symbol XENIX, which alerts
2340 the C program that it runs under Xenix.
2343 This variable is used internally by Configure to determine the
2344 full pathname (if any) of the date program. After Configure runs,
2345 the value is reset to a plain "date" and is not useful.
2347 db_hashtype (i_db.U):
2348 This variable contains the type of the hash structure element
2349 in the <db.h> header file. In older versions of DB, it was
2350 int, while in newer ones it is u_int32_t.
2352 db_prefixtype (i_db.U):
2353 This variable contains the type of the prefix structure element
2354 in the <db.h> header file. In older versions of DB, it was
2355 int, while in newer ones it is size_t.
2357 db_version_major (i_db.U):
2358 This variable contains the major version number of
2359 Berkeley DB found in the <db.h> header file.
2361 db_version_minor (i_db.U):
2362 This variable contains the minor version number of
2363 Berkeley DB found in the <db.h> header file.
2364 For DB version 1 this is always 0.
2366 db_version_patch (i_db.U):
2367 This variable contains the patch version number of
2368 Berkeley DB found in the <db.h> header file.
2369 For DB version 1 this is always 0.
2371 defvoidused (voidflags.U):
2372 This variable contains the default value of the VOIDUSED symbol (15).
2374 direntrytype (i_dirent.U):
2375 This symbol is set to 'struct direct' or 'struct dirent' depending on
2376 whether dirent is available or not. You should use this pseudo type to
2377 portably declare your directory entries.
2380 This variable contains the extension that is to be used for the
2381 dynamically loaded modules that perl generaties.
2384 This variable contains the name of the dynamic loading file that
2385 will be used with the package.
2387 doublesize (doublesize.U):
2388 This variable contains the value of the DOUBLESIZE symbol, which
2389 indicates to the C program how many bytes there are in a double.
2391 drand01 (randfunc.U):
2392 Indicates the macro to be used to generate normalized
2393 random numbers. Uses randfunc, often divided by
2394 (double) (((unsigned long) 1 << randbits)) in order to
2395 normalize the result.
2396 In C programs, the macro 'Drand01' is mapped to drand01.
2398 drand48_r_proto (d_drand48_r.U):
2399 This variable encodes the prototype of drand48_r.
2400 It is zero if d_drand48_r is undef, and one of the
2401 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2404 dynamic_ext (Extensions.U):
2405 This variable holds a list of XS extension files we want to
2406 link dynamically into the package. It is used by Makefile.
2408 eagain (nblock_io.U):
2409 This variable bears the symbolic errno code set by read() when no
2410 data is present on the file and non-blocking I/O was enabled (otherwise,
2411 read() blocks naturally).
2414 This variable conditionally defines EBCDIC if this
2415 system uses EBCDIC encoding. Among other things, this
2416 means that the character ranges are not contiguous.
2420 This variable is used internally by Configure to determine the
2421 full pathname (if any) of the echo program. After Configure runs,
2422 the value is reset to a plain "echo" and is not useful.
2425 This variable is used internally by Configure to determine the
2426 full pathname (if any) of the egrep program. After Configure runs,
2427 the value is reset to a plain "egrep" and is not useful.
2430 This variable is defined but not used by Configure.
2431 The value is a plain '' and is not useful.
2433 endgrent_r_proto (d_endgrent_r.U):
2434 This variable encodes the prototype of endgrent_r.
2435 It is zero if d_endgrent_r is undef, and one of the
2436 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2439 endhostent_r_proto (d_endhostent_r.U):
2440 This variable encodes the prototype of endhostent_r.
2441 It is zero if d_endhostent_r is undef, and one of the
2442 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2445 endnetent_r_proto (d_endnetent_r.U):
2446 This variable encodes the prototype of endnetent_r.
2447 It is zero if d_endnetent_r is undef, and one of the
2448 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2451 endprotoent_r_proto (d_endprotoent_r.U):
2452 This variable encodes the prototype of endprotoent_r.
2453 It is zero if d_endprotoent_r is undef, and one of the
2454 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2457 endpwent_r_proto (d_endpwent_r.U):
2458 This variable encodes the prototype of endpwent_r.
2459 It is zero if d_endpwent_r is undef, and one of the
2460 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2463 endservent_r_proto (d_endservent_r.U):
2464 This variable encodes the prototype of endservent_r.
2465 It is zero if d_endservent_r is undef, and one of the
2466 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2470 When running under Eunice this variable contains a command which will
2471 convert a shell script to the proper form of text file for it to be
2472 executable by the shell. On other systems it is a no-op.
2475 This is an old synonym for _exe.
2478 This variable is used internally by Configure to determine the
2479 full pathname (if any) of the expr program. After Configure runs,
2480 the value is reset to a plain "expr" and is not useful.
2482 extensions (Extensions.U):
2483 This variable holds a list of all extension files (both XS and
2484 non-xs linked into the package. It is propagated to Config.pm
2485 and is typically used to test whether a particular extesion
2489 This variable holds a list of extra modules to install.
2491 fflushall (fflushall.U):
2492 This symbol, if defined, tells that to flush
2493 all pending stdio output one must loop through all
2494 the stdio file handles stored in an array and fflush them.
2495 Note that if fflushNULL is defined, fflushall will not
2496 even be probed for and will be left undefined.
2498 fflushNULL (fflushall.U):
2499 This symbol, if defined, tells that fflush(NULL) does flush
2500 all pending stdio output.
2503 This variable is defined but not used by Configure.
2504 The value is a plain '' and is not useful.
2506 firstmakefile (Unix.U):
2507 This variable defines the first file searched by make. On unix,
2508 it is makefile (then Makefile). On case-insensitive systems,
2509 it might be something else. This is only used to deal with
2510 convoluted make depend tricks.
2513 This variable is defined but not used by Configure.
2514 The value is a plain '' and is not useful.
2516 fpossize (fpossize.U):
2517 This variable contains the size of a fpostype in bytes.
2519 fpostype (fpostype.U):
2520 This variable defines Fpos_t to be something like fpos_t, long,
2521 uint, or whatever type is used to declare file positions in libc.
2523 freetype (mallocsrc.U):
2524 This variable contains the return type of free(). It is usually
2525 void, but occasionally int.
2528 This variable contains the command used by Configure
2529 to copy files from the target host. Useful and available
2530 only during Perl build.
2531 The string ':' if not cross-compiling.
2534 This variable contains the full pathname to 'ar', whether or
2535 not the user has specified 'portability'. This is only used
2539 This variable contains the full pathname to 'csh', whether or
2540 not the user has specified 'portability'. This is only used
2541 in the compiled C program, and we assume that all systems which
2542 can share this executable will have the same full pathname to
2545 full_sed (Loc_sed.U):
2546 This variable contains the full pathname to 'sed', whether or
2547 not the user has specified 'portability'. This is only used
2548 in the compiled C program, and we assume that all systems which
2549 can share this executable will have the same full pathname to
2552 gccansipedantic (gccvers.U):
2553 If GNU cc (gcc) is used, this variable will enable (if set) the
2554 -ansi and -pedantic ccflags for building core files (through
2555 cflags script). (See Porting/pumpkin.pod for full description).
2557 gccosandvers (gccvers.U):
2558 If GNU cc (gcc) is used, this variable holds the operating system
2559 and version used to compile gcc. It is set to '' if not gcc,
2560 or if nothing useful can be parsed as the os version.
2562 gccversion (gccvers.U):
2563 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2564 indicate whether the compiler is version 1 or 2. This is used in
2565 setting some of the default cflags. It is set to '' if not gcc.
2567 getgrent_r_proto (d_getgrent_r.U):
2568 This variable encodes the prototype of getgrent_r.
2569 It is zero if d_getgrent_r is undef, and one of the
2570 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2573 getgrgid_r_proto (d_getgrgid_r.U):
2574 This variable encodes the prototype of getgrgid_r.
2575 It is zero if d_getgrgid_r is undef, and one of the
2576 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2579 getgrnam_r_proto (d_getgrnam_r.U):
2580 This variable encodes the prototype of getgrnam_r.
2581 It is zero if d_getgrnam_r is undef, and one of the
2582 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2585 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2586 This variable encodes the prototype of gethostbyaddr_r.
2587 It is zero if d_gethostbyaddr_r is undef, and one of the
2588 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2591 gethostbyname_r_proto (d_gethostbyname_r.U):
2592 This variable encodes the prototype of gethostbyname_r.
2593 It is zero if d_gethostbyname_r is undef, and one of the
2594 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2597 gethostent_r_proto (d_gethostent_r.U):
2598 This variable encodes the prototype of gethostent_r.
2599 It is zero if d_gethostent_r is undef, and one of the
2600 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2603 getlogin_r_proto (d_getlogin_r.U):
2604 This variable encodes the prototype of getlogin_r.
2605 It is zero if d_getlogin_r is undef, and one of the
2606 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2609 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2610 This variable encodes the prototype of getnetbyaddr_r.
2611 It is zero if d_getnetbyaddr_r is undef, and one of the
2612 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2615 getnetbyname_r_proto (d_getnetbyname_r.U):
2616 This variable encodes the prototype of getnetbyname_r.
2617 It is zero if d_getnetbyname_r is undef, and one of the
2618 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2621 getnetent_r_proto (d_getnetent_r.U):
2622 This variable encodes the prototype of getnetent_r.
2623 It is zero if d_getnetent_r is undef, and one of the
2624 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2627 getprotobyname_r_proto (d_getprotobyname_r.U):
2628 This variable encodes the prototype of getprotobyname_r.
2629 It is zero if d_getprotobyname_r is undef, and one of the
2630 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2633 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2634 This variable encodes the prototype of getprotobynumber_r.
2635 It is zero if d_getprotobynumber_r is undef, and one of the
2636 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2639 getprotoent_r_proto (d_getprotoent_r.U):
2640 This variable encodes the prototype of getprotoent_r.
2641 It is zero if d_getprotoent_r is undef, and one of the
2642 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2645 getpwent_r_proto (d_getpwent_r.U):
2646 This variable encodes the prototype of getpwent_r.
2647 It is zero if d_getpwent_r is undef, and one of the
2648 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2651 getpwnam_r_proto (d_getpwnam_r.U):
2652 This variable encodes the prototype of getpwnam_r.
2653 It is zero if d_getpwnam_r is undef, and one of the
2654 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2657 getpwuid_r_proto (d_getpwuid_r.U):
2658 This variable encodes the prototype of getpwuid_r.
2659 It is zero if d_getpwuid_r is undef, and one of the
2660 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2663 getservbyname_r_proto (d_getservbyname_r.U):
2664 This variable encodes the prototype of getservbyname_r.
2665 It is zero if d_getservbyname_r is undef, and one of the
2666 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2669 getservbyport_r_proto (d_getservbyport_r.U):
2670 This variable encodes the prototype of getservbyport_r.
2671 It is zero if d_getservbyport_r is undef, and one of the
2672 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2675 getservent_r_proto (d_getservent_r.U):
2676 This variable encodes the prototype of getservent_r.
2677 It is zero if d_getservent_r is undef, and one of the
2678 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2681 getspnam_r_proto (d_getspnam_r.U):
2682 This variable encodes the prototype of getspnam_r.
2683 It is zero if d_getspnam_r is undef, and one of the
2684 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2688 This variable contains the format string used for printing a Gid_t.
2690 gidsign (gidsign.U):
2691 This variable contains the signedness of a gidtype.
2692 1 for unsigned, -1 for signed.
2694 gidsize (gidsize.U):
2695 This variable contains the size of a gidtype in bytes.
2697 gidtype (gidtype.U):
2698 This variable defines Gid_t to be something like gid_t, int,
2699 ushort, or whatever type is used to declare the return type
2700 of getgid(). Typically, it is the type of group ids in the kernel.
2703 This variable holds the general path (space-separated) used to
2704 find libraries. It may contain directories that do not exist on
2705 this platform, libpth is the cleaned-up version.
2708 This variable is used internally by Configure to determine the
2709 full pathname (if any) of the gmake program. After Configure runs,
2710 the value is reset to a plain "gmake" and is not useful.
2712 gmtime_r_proto (d_gmtime_r.U):
2713 This variable encodes the prototype of gmtime_r.
2714 It is zero if d_gmtime_r is undef, and one of the
2715 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2718 gnulibc_version (d_gnulibc.U):
2719 This variable contains the version number of the GNU C library.
2720 It is usually something like '2.2.5'. It is a plain '' if this
2721 is not the GNU C library, or if the version is unknown.
2724 This variable is used internally by Configure to determine the
2725 full pathname (if any) of the grep program. After Configure runs,
2726 the value is reset to a plain "grep" and is not useful.
2729 This variable contains a command that produces the text of the
2730 /etc/group file. This is normally "cat /etc/group", but can be
2731 "ypcat group" when NIS is used.
2732 On some systems, such as os390, there may be no equivalent
2733 command, in which case this variable is unset.
2735 groupstype (groupstype.U):
2736 This variable defines Groups_t to be something like gid_t, int,
2737 ushort, or whatever type is used for the second argument to
2738 getgroups() and setgroups(). Usually, this is the same as
2739 gidtype (gid_t), but sometimes it isn't.
2742 This variable is used internally by Configure to determine the
2743 full pathname (if any) of the gzip program. After Configure runs,
2744 the value is reset to a plain "gzip" and is not useful.
2746 h_fcntl (h_fcntl.U):
2747 This is variable gets set in various places to tell i_fcntl that
2748 <fcntl.h> should be included.
2750 h_sysfile (h_sysfile.U):
2751 This is variable gets set in various places to tell i_sys_file that
2752 <sys/file.h> should be included.
2755 Gives the type of hints used for previous answers. May be one of
2756 "default", "recommended" or "previous".
2759 This variable contains a command that produces the text of the
2760 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2761 "ypcat hosts" when NIS is used.
2762 On some systems, such as os390, there may be no equivalent
2763 command, in which case this variable is unset.
2765 html1dir (html1dir.U):
2766 This variable contains the name of the directory in which html
2767 source pages are to be put. This directory is for pages
2768 that describe whole programs, not libraries or modules. It
2769 is intended to correspond roughly to section 1 of the Unix
2772 html1direxp (html1dir.U):
2773 This variable is the same as the html1dir variable, but is filename
2774 expanded at configuration time, for convenient use in makefiles.
2776 html3dir (html3dir.U):
2777 This variable contains the name of the directory in which html
2778 source pages are to be put. This directory is for pages
2779 that describe libraries or modules. It is intended to
2780 correspond roughly to section 3 of the Unix manuals.
2782 html3direxp (html3dir.U):
2783 This variable is the same as the html3dir variable, but is filename
2784 expanded at configuration time, for convenient use in makefiles.
2787 This variable is the size of an I16 in bytes.
2790 This variable contains the C type used for Perl's I16.
2793 This variable is the size of an I32 in bytes.
2796 This variable contains the C type used for Perl's I32.
2799 This variable is the size of an I64 in bytes.
2802 This variable contains the C type used for Perl's I64.
2805 This variable is the size of an I8 in bytes.
2808 This variable contains the C type used for Perl's I8.
2810 i_arpainet (i_arpainet.U):
2811 This variable conditionally defines the I_ARPA_INET symbol,
2812 and indicates whether a C program should include <arpa/inet.h>.
2814 i_bsdioctl (i_sysioctl.U):
2815 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2816 indicates to the C program that <sys/bsdioctl.h> exists and should
2819 i_crypt (i_crypt.U):
2820 This variable conditionally defines the I_CRYPT symbol, and indicates
2821 whether a C program should include <crypt.h>.
2824 This variable conditionally defines the I_DB symbol, and indicates
2825 whether a C program may include Berkeley's DB include file <db.h>.
2828 This variable conditionally defines the I_DBM symbol, which
2829 indicates to the C program that <dbm.h> exists and should
2832 i_dirent (i_dirent.U):
2833 This variable conditionally defines I_DIRENT, which indicates
2834 to the C program that it should include <dirent.h>.
2837 This variable conditionally defines the I_DLD symbol, which
2838 indicates to the C program that <dld.h> (GNU dynamic loading)
2839 exists and should be included.
2841 i_dlfcn (i_dlfcn.U):
2842 This variable conditionally defines the I_DLFCN symbol, which
2843 indicates to the C program that <dlfcn.h> exists and should
2846 i_fcntl (i_fcntl.U):
2847 This variable controls the value of I_FCNTL (which tells
2848 the C program to include <fcntl.h>).
2850 i_float (i_float.U):
2851 This variable conditionally defines the I_FLOAT symbol, and indicates
2852 whether a C program may include <float.h> to get symbols like DBL_MAX
2853 or DBL_MIN, i.e. machine dependent floating point values.
2856 This variable conditionally defines the I_FP symbol, and indicates
2857 whether a C program should include <fp.h>.
2859 i_fp_class (i_fp_class.U):
2860 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2861 whether a C program should include <fp_class.h>.
2864 This variable conditionally defines the I_GDBM symbol, which
2865 indicates to the C program that <gdbm.h> exists and should
2869 This variable conditionally defines the I_GRP symbol, and indicates
2870 whether a C program should include <grp.h>.
2872 i_ieeefp (i_ieeefp.U):
2873 This variable conditionally defines the I_IEEEFP symbol, and indicates
2874 whether a C program should include <ieeefp.h>.
2876 i_inttypes (i_inttypes.U):
2877 This variable conditionally defines the I_INTTYPES symbol,
2878 and indicates whether a C program should include <inttypes.h>.
2880 i_langinfo (i_langinfo.U):
2881 This variable conditionally defines the I_LANGINFO symbol,
2882 and indicates whether a C program should include <langinfo.h>.
2884 i_libutil (i_libutil.U):
2885 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2886 whether a C program should include <libutil.h>.
2888 i_limits (i_limits.U):
2889 This variable conditionally defines the I_LIMITS symbol, and indicates
2890 whether a C program may include <limits.h> to get symbols like WORD_BIT
2893 i_locale (i_locale.U):
2894 This variable conditionally defines the I_LOCALE symbol,
2895 and indicates whether a C program should include <locale.h>.
2897 i_machcthr (i_machcthr.U):
2898 This variable conditionally defines the I_MACH_CTHREADS symbol,
2899 and indicates whether a C program should include <mach/cthreads.h>.
2901 i_malloc (i_malloc.U):
2902 This variable conditionally defines the I_MALLOC symbol, and indicates
2903 whether a C program should include <malloc.h>.
2906 This variable conditionally defines the I_MATH symbol, and indicates
2907 whether a C program may include <math.h>.
2909 i_memory (i_memory.U):
2910 This variable conditionally defines the I_MEMORY symbol, and indicates
2911 whether a C program should include <memory.h>.
2913 i_mntent (i_mntent.U):
2914 This variable conditionally defines the I_MNTENT symbol, and indicates
2915 whether a C program should include <mntent.h>.
2918 This variable conditionally defines the I_NDBM symbol, which
2919 indicates to the C program that <ndbm.h> exists and should
2922 i_netdb (i_netdb.U):
2923 This variable conditionally defines the I_NETDB symbol, and indicates
2924 whether a C program should include <netdb.h>.
2926 i_neterrno (i_neterrno.U):
2927 This variable conditionally defines the I_NET_ERRNO symbol, which
2928 indicates to the C program that <net/errno.h> exists and should
2931 i_netinettcp (i_netinettcp.U):
2932 This variable conditionally defines the I_NETINET_TCP symbol,
2933 and indicates whether a C program should include <netinet/tcp.h>.
2936 This variable conditionally defines I_NETINET_IN, which indicates
2937 to the C program that it should include <netinet/in.h>. Otherwise,
2938 you may try <sys/in.h>.
2941 This variable conditionally defines the I_POLL symbol, and indicates
2942 whether a C program should include <poll.h>.
2945 This variable conditionally defines the I_PROT symbol, and indicates
2946 whether a C program should include <prot.h>.
2948 i_pthread (i_pthread.U):
2949 This variable conditionally defines the I_PTHREAD symbol,
2950 and indicates whether a C program should include <pthread.h>.
2953 This variable conditionally defines I_PWD, which indicates
2954 to the C program that it should include <pwd.h>.
2956 i_rpcsvcdbm (i_dbm.U):
2957 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2958 indicates to the C program that <rpcsvc/dbm.h> exists and should
2959 be included. Some System V systems might need this instead of <dbm.h>.
2962 This variable conditionally defines the I_SFIO symbol,
2963 and indicates whether a C program should include <sfio.h>.
2965 i_sgtty (i_termio.U):
2966 This variable conditionally defines the I_SGTTY symbol, which
2967 indicates to the C program that it should include <sgtty.h> rather
2970 i_shadow (i_shadow.U):
2971 This variable conditionally defines the I_SHADOW symbol, and indicates
2972 whether a C program should include <shadow.h>.
2974 i_socks (i_socks.U):
2975 This variable conditionally defines the I_SOCKS symbol, and indicates
2976 whether a C program should include <socks.h>.
2978 i_stdarg (i_varhdr.U):
2979 This variable conditionally defines the I_STDARG symbol, which
2980 indicates to the C program that <stdarg.h> exists and should
2983 i_stddef (i_stddef.U):
2984 This variable conditionally defines the I_STDDEF symbol, which
2985 indicates to the C program that <stddef.h> exists and should
2988 i_stdlib (i_stdlib.U):
2989 This variable conditionally defines the I_STDLIB symbol, which
2990 indicates to the C program that <stdlib.h> exists and should
2993 i_string (i_string.U):
2994 This variable conditionally defines the I_STRING symbol, which
2995 indicates that <string.h> should be included rather than <strings.h>.
2997 i_sunmath (i_sunmath.U):
2998 This variable conditionally defines the I_SUNMATH symbol, and indicates
2999 whether a C program should include <sunmath.h>.
3001 i_sysaccess (i_sysaccess.U):
3002 This variable conditionally defines the I_SYS_ACCESS symbol,
3003 and indicates whether a C program should include <sys/access.h>.
3005 i_sysdir (i_sysdir.U):
3006 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3007 whether a C program should include <sys/dir.h>.
3009 i_sysfile (i_sysfile.U):
3010 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3011 whether a C program should include <sys/file.h> to get R_OK and friends.
3013 i_sysfilio (i_sysioctl.U):
3014 This variable conditionally defines the I_SYS_FILIO symbol, which
3015 indicates to the C program that <sys/filio.h> exists and should
3016 be included in preference to <sys/ioctl.h>.
3019 This variable conditionally defines I_SYS_IN, which indicates
3020 to the C program that it should include <sys/in.h> instead of
3023 i_sysioctl (i_sysioctl.U):
3024 This variable conditionally defines the I_SYS_IOCTL symbol, which
3025 indicates to the C program that <sys/ioctl.h> exists and should
3028 i_syslog (i_syslog.U):
3029 This variable conditionally defines the I_SYSLOG symbol,
3030 and indicates whether a C program should include <syslog.h>.
3032 i_sysmman (i_sysmman.U):
3033 This variable conditionally defines the I_SYS_MMAN symbol, and
3034 indicates whether a C program should include <sys/mman.h>.
3036 i_sysmode (i_sysmode.U):
3037 This variable conditionally defines the I_SYSMODE symbol,
3038 and indicates whether a C program should include <sys/mode.h>.
3040 i_sysmount (i_sysmount.U):
3041 This variable conditionally defines the I_SYSMOUNT symbol,
3042 and indicates whether a C program should include <sys/mount.h>.
3044 i_sysndir (i_sysndir.U):
3045 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3046 whether a C program should include <sys/ndir.h>.
3048 i_sysparam (i_sysparam.U):
3049 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3050 whether a C program should include <sys/param.h>.
3052 i_sysresrc (i_sysresrc.U):
3053 This variable conditionally defines the I_SYS_RESOURCE symbol,
3054 and indicates whether a C program should include <sys/resource.h>.
3056 i_syssecrt (i_syssecrt.U):
3057 This variable conditionally defines the I_SYS_SECURITY symbol,
3058 and indicates whether a C program should include <sys/security.h>.
3060 i_sysselct (i_sysselct.U):
3061 This variable conditionally defines I_SYS_SELECT, which indicates
3062 to the C program that it should include <sys/select.h> in order to
3063 get the definition of struct timeval.
3065 i_syssockio (i_sysioctl.U):
3066 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3067 C program that socket ioctl codes may be found in <sys/sockio.h>
3068 instead of <sys/ioctl.h>.
3070 i_sysstat (i_sysstat.U):
3071 This variable conditionally defines the I_SYS_STAT symbol,
3072 and indicates whether a C program should include <sys/stat.h>.
3074 i_sysstatfs (i_sysstatfs.U):
3075 This variable conditionally defines the I_SYSSTATFS symbol,
3076 and indicates whether a C program should include <sys/statfs.h>.
3078 i_sysstatvfs (i_sysstatvfs.U):
3079 This variable conditionally defines the I_SYSSTATVFS symbol,
3080 and indicates whether a C program should include <sys/statvfs.h>.
3082 i_systime (i_time.U):
3083 This variable conditionally defines I_SYS_TIME, which indicates
3084 to the C program that it should include <sys/time.h>.
3086 i_systimek (i_time.U):
3087 This variable conditionally defines I_SYS_TIME_KERNEL, which
3088 indicates to the C program that it should include <sys/time.h>
3089 with KERNEL defined.
3091 i_systimes (i_systimes.U):
3092 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3093 whether a C program should include <sys/times.h>.
3095 i_systypes (i_systypes.U):
3096 This variable conditionally defines the I_SYS_TYPES symbol,
3097 and indicates whether a C program should include <sys/types.h>.
3099 i_sysuio (i_sysuio.U):
3100 This variable conditionally defines the I_SYSUIO symbol, and indicates
3101 whether a C program should include <sys/uio.h>.
3103 i_sysun (i_sysun.U):
3104 This variable conditionally defines I_SYS_UN, which indicates
3105 to the C program that it should include <sys/un.h> to get UNIX
3106 domain socket definitions.
3108 i_sysutsname (i_sysutsname.U):
3109 This variable conditionally defines the I_SYSUTSNAME symbol,
3110 and indicates whether a C program should include <sys/utsname.h>.
3112 i_sysvfs (i_sysvfs.U):
3113 This variable conditionally defines the I_SYSVFS symbol,
3114 and indicates whether a C program should include <sys/vfs.h>.
3116 i_syswait (i_syswait.U):
3117 This variable conditionally defines I_SYS_WAIT, which indicates
3118 to the C program that it should include <sys/wait.h>.
3120 i_termio (i_termio.U):
3121 This variable conditionally defines the I_TERMIO symbol, which
3122 indicates to the C program that it should include <termio.h> rather
3125 i_termios (i_termio.U):
3126 This variable conditionally defines the I_TERMIOS symbol, which
3127 indicates to the C program that the POSIX <termios.h> file is
3131 This variable conditionally defines I_TIME, which indicates
3132 to the C program that it should include <time.h>.
3134 i_unistd (i_unistd.U):
3135 This variable conditionally defines the I_UNISTD symbol, and indicates
3136 whether a C program should include <unistd.h>.
3138 i_ustat (i_ustat.U):
3139 This variable conditionally defines the I_USTAT symbol, and indicates
3140 whether a C program should include <ustat.h>.
3142 i_utime (i_utime.U):
3143 This variable conditionally defines the I_UTIME symbol, and indicates
3144 whether a C program should include <utime.h>.
3146 i_values (i_values.U):
3147 This variable conditionally defines the I_VALUES symbol, and indicates
3148 whether a C program may include <values.h> to get symbols like MAXLONG
3151 i_varargs (i_varhdr.U):
3152 This variable conditionally defines I_VARARGS, which indicates
3153 to the C program that it should include <varargs.h>.
3155 i_varhdr (i_varhdr.U):
3156 Contains the name of the header to be included to get va_dcl definition.
3157 Typically one of varargs.h or stdarg.h.
3159 i_vfork (i_vfork.U):
3160 This variable conditionally defines the I_VFORK symbol, and indicates
3161 whether a C program should include vfork.h.
3163 ignore_versioned_solibs (libs.U):
3164 This variable should be non-empty if non-versioned shared
3165 libraries (libfoo.so.x.y) are to be ignored (because they
3166 cannot be linked against).
3168 inc_version_list (inc_version_list.U):
3169 This variable specifies the list of subdirectories in over
3170 which perl.c:incpush() and lib/lib.pm will automatically
3171 search when adding directories to @INC. The elements in
3172 the list are separated by spaces. This is only useful
3173 if you have a perl library directory tree structured like the
3174 default one. See INSTALL for how this works. The versioned
3175 site_perl directory was introduced in 5.005, so that is the
3176 lowest possible value.
3178 This list includes architecture-dependent directories back to
3179 version $api_versionstring (e.g. 5.5.640) and
3180 architecture-independent directories all the way back to
3183 inc_version_list_init (inc_version_list.U):
3184 This variable holds the same list as inc_version_list, but
3185 each item is enclosed in double quotes and separated by commas,
3186 suitable for use in the PERL_INC_VERSION_LIST initialization.
3189 This variable must preceed the normal include path to get hte
3190 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3191 Value can be "" or "/bsd43" on mips.
3194 This variable is defined but not used by Configure.
3195 The value is a plain '' and is not useful.
3197 initialinstalllocation (bin.U):
3198 When userelocatableinc is true, this variable holds the location
3199 that make install should copy the perl binary to, with all the
3200 run-time relocatable paths calculated from this at install time.
3201 When used, it is initialised to the original value of binexp, and
3202 then binexp is set to '.../', as the other binaries are found
3203 relative to the perl binary.
3205 installarchlib (archlib.U):
3206 This variable is really the same as archlibexp but may differ on
3207 those systems using AFS. For extra portability, only this variable
3208 should be used in makefiles.
3211 This variable is the same as binexp unless AFS is running in which case
3212 the user is explicitely prompted for it. This variable should always
3213 be used in your makefiles for maximum portability.
3215 installhtml1dir (html1dir.U):
3216 This variable is really the same as html1direxp, unless you are
3217 using a different installprefix. For extra portability, you
3218 should only use this variable within your makefiles.
3220 installhtml3dir (html3dir.U):
3221 This variable is really the same as html3direxp, unless you are
3222 using a different installprefix. For extra portability, you
3223 should only use this variable within your makefiles.
3225 installman1dir (man1dir.U):
3226 This variable is really the same as man1direxp, unless you are using
3227 AFS in which case it points to the read/write location whereas
3228 man1direxp only points to the read-only access location. For extra
3229 portability, you should only use this variable within your makefiles.
3231 installman3dir (man3dir.U):
3232 This variable is really the same as man3direxp, unless you are using
3233 AFS in which case it points to the read/write location whereas
3234 man3direxp only points to the read-only access location. For extra
3235 portability, you should only use this variable within your makefiles.
3237 installprefix (installprefix.U):
3238 This variable holds the name of the directory below which
3239 "make install" will install the package. For most users, this
3240 is the same as prefix. However, it is useful for
3241 installing the software into a different (usually temporary)
3242 location after which it can be bundled up and moved somehow
3243 to the final location specified by prefix.
3245 installprefixexp (installprefix.U):
3246 This variable holds the full absolute path of installprefix
3247 with all ~-expansion done.
3249 installprivlib (privlib.U):
3250 This variable is really the same as privlibexp but may differ on
3251 those systems using AFS. For extra portability, only this variable
3252 should be used in makefiles.
3254 installscript (scriptdir.U):
3255 This variable is usually the same as scriptdirexp, unless you are on
3256 a system running AFS, in which case they may differ slightly. You
3257 should always use this variable within your makefiles for portability.
3259 installsitearch (sitearch.U):
3260 This variable is really the same as sitearchexp but may differ on
3261 those systems using AFS. For extra portability, only this variable
3262 should be used in makefiles.
3264 installsitebin (sitebin.U):
3265 This variable is usually the same as sitebinexp, unless you are on
3266 a system running AFS, in which case they may differ slightly. You
3267 should always use this variable within your makefiles for portability.
3269 installsitehtml1dir (sitehtml1dir.U):
3270 This variable is really the same as sitehtml1direxp, unless you are using
3271 AFS in which case it points to the read/write location whereas
3272 html1direxp only points to the read-only access location. For extra
3273 portability, you should only use this variable within your makefiles.
3275 installsitehtml3dir (sitehtml3dir.U):
3276 This variable is really the same as sitehtml3direxp, unless you are using
3277 AFS in which case it points to the read/write location whereas
3278 html3direxp only points to the read-only access location. For extra
3279 portability, you should only use this variable within your makefiles.
3281 installsitelib (sitelib.U):
3282 This variable is really the same as sitelibexp but may differ on
3283 those systems using AFS. For extra portability, only this variable
3284 should be used in makefiles.
3286 installsiteman1dir (siteman1dir.U):
3287 This variable is really the same as siteman1direxp, unless you are using
3288 AFS in which case it points to the read/write location whereas
3289 man1direxp only points to the read-only access location. For extra
3290 portability, you should only use this variable within your makefiles.
3292 installsiteman3dir (siteman3dir.U):
3293 This variable is really the same as siteman3direxp, unless you are using
3294 AFS in which case it points to the read/write location whereas
3295 man3direxp only points to the read-only access location. For extra
3296 portability, you should only use this variable within your makefiles.
3298 installsitescript (sitescript.U):
3299 This variable is usually the same as sitescriptexp, unless you are on
3300 a system running AFS, in which case they may differ slightly. You
3301 should always use this variable within your makefiles for portability.
3303 installstyle (installstyle.U):
3304 This variable describes the "style" of the perl installation.
3305 This is intended to be useful for tools that need to
3306 manipulate entire perl distributions. Perl itself doesn't use
3307 this to find its libraries -- the library directories are
3308 stored directly in Config.pm. Currently, there are only two
3309 styles: "lib" and "lib/perl5". The default library locations
3310 (e.g. privlib, sitelib) are either $prefix/lib or
3311 $prefix/lib/perl5. The former is useful if $prefix is a
3312 directory dedicated to perl (e.g. /opt/perl), while the latter
3313 is useful if $prefix is shared by many packages, e.g. if
3316 Unfortunately, while this "style" variable is used to set
3317 defaults for all three directory hierarchies (core, vendor, and
3318 site), there is no guarantee that the same style is actually
3319 appropriate for all those directories. For example, $prefix
3320 might be /opt/perl, but $siteprefix might be /usr/local.
3321 (Perhaps, in retrospect, the "lib" style should never have been
3322 supported, but it did seem like a nice idea at the time.)
3324 The situation is even less clear for tools such as MakeMaker
3325 that can be used to install additional modules into
3326 non-standard places. For example, if a user intends to install
3327 a module into a private directory (perhaps by setting PREFIX on
3328 the Makefile.PL command line), then there is no reason to
3329 assume that the Configure-time $installstyle setting will be
3330 relevant for that PREFIX.
3332 This may later be extended to include other information, so
3333 be careful with pattern-matching on the results.
3335 For compatibility with perl5.005 and earlier, the default
3336 setting is based on whether or not $prefix contains the string
3339 installusrbinperl (instubperl.U):
3340 This variable tells whether Perl should be installed also as
3341 /usr/bin/perl in addition to
3344 installvendorarch (vendorarch.U):
3345 This variable is really the same as vendorarchexp but may differ on
3346 those systems using AFS. For extra portability, only this variable
3347 should be used in makefiles.
3349 installvendorbin (vendorbin.U):
3350 This variable is really the same as vendorbinexp but may differ on
3351 those systems using AFS. For extra portability, only this variable
3352 should be used in makefiles.
3354 installvendorhtml1dir (vendorhtml1dir.U):
3355 This variable is really the same as vendorhtml1direxp but may differ on
3356 those systems using AFS. For extra portability, only this variable
3357 should be used in makefiles.
3359 installvendorhtml3dir (vendorhtml3dir.U):
3360 This variable is really the same as vendorhtml3direxp but may differ on
3361 those systems using AFS. For extra portability, only this variable
3362 should be used in makefiles.
3364 installvendorlib (vendorlib.U):
3365 This variable is really the same as vendorlibexp but may differ on
3366 those systems using AFS. For extra portability, only this variable
3367 should be used in makefiles.
3369 installvendorman1dir (vendorman1dir.U):
3370 This variable is really the same as vendorman1direxp but may differ on
3371 those systems using AFS. For extra portability, only this variable
3372 should be used in makefiles.
3374 installvendorman3dir (vendorman3dir.U):
3375 This variable is really the same as vendorman3direxp but may differ on
3376 those systems using AFS. For extra portability, only this variable
3377 should be used in makefiles.
3379 installvendorscript (vendorscript.U):
3380 This variable is really the same as vendorscriptexp but may differ on
3381 those systems using AFS. For extra portability, only this variable
3382 should be used in makefiles.
3384 intsize (intsize.U):
3385 This variable contains the value of the INTSIZE symbol, which
3386 indicates to the C program how many bytes there are in an int.
3388 issymlink (issymlink.U):
3389 This variable holds the test command to test for a symbolic link
3390 (if they are supported). Typical values include 'test -h' and
3393 ivdformat (perlxvf.U):
3394 This variable contains the format string used for printing
3395 a Perl IV as a signed decimal integer.
3398 This variable is the size of an IV in bytes.
3401 This variable contains the C type used for Perl's IV.
3403 known_extensions (Extensions.U):
3404 This variable holds a list of all XS extensions included in
3408 This variable is defined but not used by Configure.
3409 The value is a plain '' and is not useful.
3412 This variable indicates the program to be used to link
3413 libraries for dynamic loading. On some systems, it is 'ld'.
3414 On ELF systems, it should be $cc. Mostly, we'll try to respect
3415 the hint file setting.
3417 lddlflags (dlsrc.U):
3418 This variable contains any special flags that might need to be
3419 passed to $ld to create a shared library suitable for dynamic
3420 loading. It is up to the makefile to use it. For hpux, it
3421 should be '-b'. For sunos 4.1, it is empty.
3423 ldflags (ccflags.U):
3424 This variable contains any additional C loader flags desired by
3425 the user. It is up to the Makefile to use this.
3427 ldflags_uselargefiles (uselfs.U):
3428 This variable contains the loader flags needed by large file builds
3429 and added to ldflags by hints files.
3431 ldlibpthname (libperl.U):
3432 This variable holds the name of the shared library
3433 search path, often LD_LIBRARY_PATH. To get an empty
3434 string, the hints file must set this to 'none'.
3437 This variable is used internally by Configure to determine the
3438 full pathname (if any) of the less program. After Configure runs,
3439 the value is reset to a plain "less" and is not useful.
3442 This is an old synonym for _a.
3445 This variable contains the location of the C library.
3447 libperl (libperl.U):
3448 The perl executable is obtained by linking perlmain.c with
3449 libperl, any static extensions (usually just DynaLoader),
3450 and any other libraries needed on this system. libperl
3451 is usually libperl.a, but can also be libperl.so.xxx if
3452 the user wishes to build a perl executable with a shared
3456 This variable holds the general path (space-separated) used to find
3457 libraries. It is intended to be used by other units.
3460 This variable holds the additional libraries we want to use.
3461 It is up to the Makefile to deal with it. The list can be empty.
3464 This variable holds the directory names aka dirnames of the libraries
3465 we found and accepted, duplicates are removed.
3468 This variable holds the filenames aka basenames of the libraries
3469 we found and accepted.
3472 This variable holds the full pathnames of the libraries
3473 we found and accepted.
3476 This variable holds the directory names probed for libraries.
3478 libswanted (Myinit.U):
3479 This variable holds a list of all the libraries we want to
3480 search. The order is chosen to pick up the c library
3481 ahead of ucb or bsd libraries for SVR4.
3483 libswanted_uselargefiles (uselfs.U):
3484 This variable contains the libraries needed by large file builds
3485 and added to ldflags by hints files. It is a space separated list
3486 of the library names without the "lib" prefix or any suffix, just
3490 This variable is defined but not used by Configure.
3491 The value is a plain '' and is not useful.
3494 This variable is defined but not used by Configure.
3495 The value is a plain '' and is not useful.
3497 lkflags (ccflags.U):
3498 This variable contains any additional C partial linker flags desired by
3499 the user. It is up to the Makefile to use this.
3502 This variable is used internally by Configure to determine the
3503 full pathname (if any) of the ln program. After Configure runs,
3504 the value is reset to a plain "ln" and is not useful.
3507 This variable holds the name of the command to make
3508 symbolic links (if they are supported). It can be used
3509 in the Makefile. It is either 'ln -s' or 'ln'
3511 localtime_r_proto (d_localtime_r.U):
3512 This variable encodes the prototype of localtime_r.
3513 It is zero if d_localtime_r is undef, and one of the
3514 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3517 locincpth (ccflags.U):
3518 This variable contains a list of additional directories to be
3519 searched by the compiler. The appropriate '-I' directives will
3520 be added to ccflags. This is intended to simplify setting
3521 local directories from the Configure command line.
3522 It's not much, but it parallels the loclibpth stuff in libpth.U.
3524 loclibpth (libpth.U):
3525 This variable holds the paths (space-separated) used to find local
3526 libraries. It is prepended to libpth, and is intended to be easily
3527 set from the command line.
3529 longdblsize (d_longdbl.U):
3530 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3531 indicates to the C program how many bytes there are in a long double,
3532 if this system supports long doubles.
3534 longlongsize (d_longlong.U):
3535 This variable contains the value of the LONGLONGSIZE symbol, which
3536 indicates to the C program how many bytes there are in a long long,
3537 if this system supports long long.
3539 longsize (intsize.U):
3540 This variable contains the value of the LONGSIZE symbol, which
3541 indicates to the C program how many bytes there are in a long.
3544 This variable is defined but not used by Configure.
3545 The value is a plain '' and is not useful.
3548 This variable is defined but not used by Configure.
3549 The value is a plain '' and is not useful.
3552 This variable is used internally by Configure to determine the
3553 full pathname (if any) of the ls program. After Configure runs,
3554 the value is reset to a plain "ls" and is not useful.
3556 lseeksize (lseektype.U):
3557 This variable defines lseektype to be something like off_t, long,
3558 or whatever type is used to declare lseek offset's type in the
3559 kernel (which also appears to be lseek's return type).
3561 lseektype (lseektype.U):
3562 This variable defines lseektype to be something like off_t, long,
3563 or whatever type is used to declare lseek offset's type in the
3564 kernel (which also appears to be lseek's return type).
3567 This variable indicates that the Misc Attribute Definition code is to
3571 If the Misc Attribute Decoration is to be compiled, this variable is
3572 set to the name of the extra header files to be used, else it is ''
3575 If the Misc Attribute Decoration is to be compiled, this variable is
3576 set to the name of the extra object 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 C source files to be used, else it is ''
3583 This variable is defined but not used by Configure.
3584 The value is a plain '' and is not useful.
3587 This variable is defined but not used by Configure.
3588 The value is a plain '' and is not useful.
3591 This variable is used internally by Configure to determine the
3592 full pathname (if any) of the make program. After Configure runs,
3593 the value is reset to a plain "make" and is not useful.
3595 make_set_make (make.U):
3596 Some versions of 'make' set the variable MAKE. Others do not.
3597 This variable contains the string to be included in Makefile.SH
3598 so that MAKE is set if needed, and not if not needed.
3599 Possible values are:
3601 make_set_make='#' # If your make program handles this for you,
3603 make_set_make="MAKE=$make" # if it doesn't.
3605 This uses a comment character to distinguish a
3606 'set' value (from a previous config.sh or Configure '-D' option)
3607 from an uncomputed value.
3609 mallocobj (mallocsrc.U):
3610 This variable contains the name of the malloc.o that this package
3611 generates, if that malloc.o is preferred over the system malloc.
3612 Otherwise the value is null. This variable is intended for generating
3613 Makefiles. See mallocsrc.
3615 mallocsrc (mallocsrc.U):
3616 This variable contains the name of the malloc.c that comes with
3617 the package, if that malloc.c is preferred over the system malloc.
3618 Otherwise the value is null. This variable is intended for generating
3621 malloctype (mallocsrc.U):
3622 This variable contains the kind of ptr returned by malloc and realloc.
3624 man1dir (man1dir.U):
3625 This variable contains the name of the directory in which manual
3626 source pages are to be put. It is the responsibility of the
3627 Makefile.SH to get the value of this into the proper command.
3628 You must be prepared to do the ~name expansion yourself.
3630 man1direxp (man1dir.U):
3631 This variable is the same as the man1dir variable, but is filename
3632 expanded at configuration time, for convenient use in makefiles.
3634 man1ext (man1dir.U):
3635 This variable contains the extension that the manual page should
3636 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3639 man3dir (man3dir.U):
3640 This variable contains the name of the directory in which manual
3641 source pages are to be put. It is the responsibility of the
3642 Makefile.SH to get the value of this into the proper command.
3643 You must be prepared to do the ~name expansion yourself.
3645 man3direxp (man3dir.U):
3646 This variable is the same as the man3dir variable, but is filename
3647 expanded at configuration time, for convenient use in makefiles.
3649 man3ext (man3dir.U):
3650 This variable contains the extension that the manual page should
3651 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3655 This variable is used internally by Configure to determine the
3656 full pathname (if any) of the Mcc program. After Configure runs,
3657 the value is reset to a plain "Mcc" and is not useful.
3659 mips_type (usrinc.U):
3660 This variable holds the environment type for the mips system.
3661 Possible values are "BSD 4.3" and "System V".
3663 mistrustnm (Csym.U):
3664 This variable can be used to establish a fallthrough for the cases
3665 where nm fails to find a symbol. If usenm is false or usenm is true
3666 and mistrustnm is false, this variable has no effect. If usenm is true
3667 and mistrustnm is "compile", a test program will be compiled to try to
3668 find any symbol that can't be located via nm lookup. If mistrustnm is
3669 "run", the test program will be run as well as being compiled.
3672 This variable is used internally by Configure to determine the
3673 full pathname (if any) of the mkdir program. After Configure runs,
3674 the value is reset to a plain "mkdir" and is not useful.
3676 mmaptype (d_mmap.U):
3677 This symbol contains the type of pointer returned by mmap()
3678 (and simultaneously the type of the first argument).
3679 It can be 'void *' or 'caddr_t'.
3681 modetype (modetype.U):
3682 This variable defines modetype to be something like mode_t,
3683 int, unsigned short, or whatever type is used to declare file
3684 modes for system calls.
3687 This variable is used internally by Configure to determine the
3688 full pathname (if any) of the more program. After Configure runs,
3689 the value is reset to a plain "more" and is not useful.
3691 multiarch (multiarch.U):
3692 This variable conditionally defines the MULTIARCH symbol
3693 which signifies the presence of multiplatform files.
3694 This is normally set by hints files.
3697 This variable is defined but not used by Configure.
3698 The value is a plain '' and is not useful.
3700 myarchname (archname.U):
3701 This variable holds the architecture name computed by Configure in
3702 a previous run. It is not intended to be perused by any user and
3703 should never be set in a hint file.
3705 mydomain (myhostname.U):
3706 This variable contains the eventual value of the MYDOMAIN symbol,
3707 which is the domain of the host the program is going to run on.
3708 The domain must be appended to myhostname to form a complete host name.
3709 The dot comes with mydomain, and need not be supplied by the program.
3711 myhostname (myhostname.U):
3712 This variable contains the eventual value of the MYHOSTNAME symbol,
3713 which is the name of the host the program is going to run on.
3714 The domain is not kept with hostname, but must be gotten from mydomain.
3715 The dot comes with mydomain, and need not be supplied by the program.
3717 myuname (Oldconfig.U):
3718 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3719 pseudo variables assignments in the output are stripped, thank you. The
3720 whole thing is then lower-cased.
3723 This variable contains the '-n' flag if that is what causes the echo
3724 command to suppress newline. Otherwise it is null. Correct usage is
3725 $echo $n "prompt for a question: $c".
3727 need_va_copy (need_va_copy.U):
3728 This symbol, if defined, indicates that the system stores
3729 the variable argument list datatype, va_list, in a format
3730 that cannot be copied by simple assignment, so that some
3731 other means must be used when copying is required.
3732 As such systems vary in their provision (or non-provision)
3733 of copying mechanisms, handy.h defines a platform-
3734 independent macro, Perl_va_copy(src, dst), to do the job.
3736 netdb_hlen_type (netdbtype.U):
3737 This variable holds the type used for the 2nd argument to
3738 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3739 This is only useful if you have gethostbyaddr(), naturally.
3741 netdb_host_type (netdbtype.U):
3742 This variable holds the type used for the 1st argument to
3743 gethostbyaddr(). Usually, this is char * or void *, possibly
3744 with or without a const prefix.
3745 This is only useful if you have gethostbyaddr(), naturally.
3747 netdb_name_type (netdbtype.U):
3748 This variable holds the type used for the argument to
3749 gethostbyname(). Usually, this is char * or const char *.
3750 This is only useful if you have gethostbyname(), naturally.
3752 netdb_net_type (netdbtype.U):
3753 This variable holds the type used for the 1st argument to
3754 getnetbyaddr(). Usually, this is int or long.
3755 This is only useful if you have getnetbyaddr(), naturally.
3758 This variable is used internally by Configure to determine the
3759 full pathname (if any) of the nm program. After Configure runs,
3760 the value is reset to a plain "nm" and is not useful.
3763 This variable holds the options that may be necessary for nm.
3765 nm_so_opt (usenm.U):
3766 This variable holds the options that may be necessary for nm
3767 to work on a shared library but that can not be used on an
3768 archive library. Currently, this is only used by Linux, where
3769 nm --dynamic is *required* to get symbols from an ELF library which
3770 has been stripped, but nm --dynamic is *fatal* on an archive library.
3771 Maybe Linux should just always set usenm=false.
3773 nonxs_ext (Extensions.U):
3774 This variable holds a list of all non-xs extensions included
3775 in the package. All of them will be built.
3778 This variable is used internally by Configure to determine the
3779 full pathname (if any) of the nroff program. After Configure runs,
3780 the value is reset to a plain "nroff" and is not useful.
3782 nv_preserves_uv_bits (perlxv.U):
3783 This variable indicates how many of bits type uvtype
3784 a variable nvtype can preserve.
3786 nveformat (perlxvf.U):
3787 This variable contains the format string used for printing
3788 a Perl NV using %e-ish floating point format.
3790 nvEUformat (perlxvf.U):
3791 This variable contains the format string used for printing
3792 a Perl NV using %E-ish floating point format.
3794 nvfformat (perlxvf.U):
3795 This variable confains the format string used for printing
3796 a Perl NV using %f-ish floating point format.
3798 nvFUformat (perlxvf.U):
3799 This variable confains the format string used for printing
3800 a Perl NV using %F-ish floating point format.
3802 nvgformat (perlxvf.U):
3803 This variable contains the format string used for printing
3804 a Perl NV using %g-ish floating point format.
3806 nvGUformat (perlxvf.U):
3807 This variable contains the format string used for printing
3808 a Perl NV using %G-ish floating point format.
3811 This variable is the size of an NV in bytes.
3814 This variable contains the C type used for Perl's NV.
3816 o_nonblock (nblock_io.U):
3817 This variable bears the symbol value to be used during open() or fcntl()
3818 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3819 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3820 but that is only supported by some devices.
3823 This is an old synonym for _o.
3825 old_pthread_create_joinable (d_pthrattrj.U):
3826 This variable defines the constant to use for creating joinable
3827 (aka undetached) pthreads. Unused if pthread.h defines
3828 PTHREAD_CREATE_JOINABLE. If used, possible values are
3829 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3831 optimize (ccflags.U):
3832 This variable contains any optimizer/debugger flag that should be used.
3833 It is up to the Makefile to use it.
3835 orderlib (orderlib.U):
3836 This variable is "true" if the components of libraries must be ordered
3837 (with `lorder $* | tsort`) before placing them in an archive. Set to
3838 "false" if ranlib or ar can generate random libraries.
3840 osname (Oldconfig.U):
3841 This variable contains the operating system name (e.g. sunos,
3842 solaris, hpux, etc.). It can be useful later on for setting
3843 defaults. Any spaces are replaced with underscores. It is set
3844 to a null string if we can't figure it out.
3846 osvers (Oldconfig.U):
3847 This variable contains the operating system version (e.g.
3848 4.1.3, 5.2, etc.). It is primarily used for helping select
3849 an appropriate hints file, but might be useful elsewhere for
3850 setting defaults. It is set to '' if we can't figure it out.
3851 We try to be flexible about how much of the version number
3852 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3853 same for this package, hints files might just be os_4.0 or
3854 os_4.1, etc., not keeping separate files for each little release.
3856 otherlibdirs (otherlibdirs.U):
3857 This variable contains a colon-separated set of paths for the perl
3858 binary to search for additional library files or modules.
3859 These directories will be tacked to the end of @INC.
3860 Perl will automatically search below each path for version-
3861 and architecture-specific directories. See inc_version_list
3863 A value of ' ' means 'none' and is used to preserve this value
3864 for the next run through Configure.
3866 package (package.U):
3867 This variable contains the name of the package being constructed.
3868 It is primarily intended for the use of later Configure units.
3871 This variable contains the name of the preferred pager on the system.
3872 Usual values are (the full pathnames of) more, less, pg, or cat.
3875 This variable contains a command that produces the text of the
3876 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3877 "ypcat passwd" when NIS is used.
3878 On some systems, such as os390, there may be no equivalent
3879 command, in which case this variable is unset.
3881 patchlevel (patchlevel.U):
3882 The patchlevel level of this package.
3883 The value of patchlevel comes from the patchlevel.h file.
3884 In a version number such as 5.6.1, this is the "6".
3885 In patchlevel.h, this is referred to as "PERL_VERSION".
3888 This is an old synonym for p_ in Head.U, the character
3889 used to separate elements in the command shell search PATH.
3892 This variable is defined but not used by Configure.
3893 The value is a plain '' and is not useful.
3896 This variable contains the full path (if any) to a previously
3897 installed perl5.005 or later suitable for running the script
3898 to determine inc_version_list.
3900 PERL_API_REVISION (patchlevel.h):
3901 This number describes the earliest compatible PERL_REVISION of
3902 Perl ("compatibility" here being defined as sufficient binary/API
3903 compatibility to run XS code built with the older version).
3904 Normally this does not change across maintenance releases.
3905 Please read the comment in patchlevel.h.
3907 PERL_API_SUBVERSION (patchlevel.h):
3908 This number describes the earliest compatible PERL_SUBVERSION of
3909 Perl ("compatibility" here being defined as sufficient binary/API
3910 compatibility to run XS code built with the older version).
3911 Normally this does not change across maintenance releases.
3912 Please read the comment in patchlevel.h.
3914 PERL_API_VERSION (patchlevel.h):
3915 This number describes the earliest compatible PERL_VERSION of
3916 Perl ("compatibility" here being defined as sufficient binary/API
3917 compatibility to run XS code built with the older version).
3918 Normally this does not change across maintenance releases.
3919 Please read the comment in patchlevel.h.
3921 PERL_CONFIG_SH (Oldsyms.U):
3922 This is set to 'true' in config.sh so that a shell script
3923 sourcing config.sh can tell if it has been sourced already.
3925 PERL_PATCHLEVEL (Oldsyms.U):
3926 This symbol reflects the patchlevel, if available. Will usually
3927 come from the .patch file, which is available when the perl
3928 source tree was fetched with rsync.
3930 perl_patchlevel (patchlevel.U):
3931 This is the Perl patch level, a numeric change identifier,
3932 as defined by whichever source code maintenance system
3933 is used to maintain the patches; currently Perforce.
3934 It does not correlate with the Perl version numbers or
3935 the maintenance versus development dichotomy except
3936 by also being increasing.
3938 PERL_REVISION (Oldsyms.U):
3939 In a Perl version number such as 5.6.2, this is the 5.
3940 This value is manually set in patchlevel.h
3942 PERL_SUBVERSION (Oldsyms.U):
3943 In a Perl version number such as 5.6.2, this is the 2.
3944 Values greater than 50 represent potentially unstable
3945 development subversions.
3946 This value is manually set in patchlevel.h
3948 PERL_VERSION (Oldsyms.U):
3949 In a Perl version number such as 5.6.2, this is the 6.
3950 This value is manually set in patchlevel.h
3952 perladmin (perladmin.U):
3953 Electronic mail address of the perl5 administrator.
3956 The list of libraries needed by Perl only (any libraries needed
3957 by extensions only will by dropped, if using dynamic loading).
3959 perlpath (perlpath.U):
3960 This variable contains the eventual value of the PERLPATH symbol,
3961 which contains the name of the perl interpreter to be used in
3962 shell scripts and in the "eval 'exec'" idiom. This variable is
3963 not necessarily the pathname of the file containing the perl
3964 interpreter; you must append the executable extension (_exe) if
3965 it is not already present. Note that Perl code that runs during
3966 the Perl build process cannot reference this variable, as Perl
3967 may not have been installed, or even if installed, may be a
3968 different version of Perl.
3971 This variable is used internally by Configure to determine the
3972 full pathname (if any) of the pg program. After Configure runs,
3973 the value is reset to a plain "pg" and is not useful.
3975 phostname (myhostname.U):
3976 This variable contains the eventual value of the PHOSTNAME symbol,
3977 which is a command that can be fed to popen() to get the host name.
3978 The program should probably not presume that the domain is or isn't
3981 pidtype (pidtype.U):
3982 This variable defines PIDTYPE to be something like pid_t, int,
3983 ushort, or whatever type is used to declare process ids in the kernel.
3986 Holds the private path used by Configure to find out the libraries.
3987 Its value is prepend to libpth. This variable takes care of special
3988 machines, like the mips. Usually, it should be empty.
3991 This variable is defined but not used by Configure.
3992 The value is a plain '' and is not useful.
3995 This variable is defined but not used by Configure.
3996 The value is a plain '' and is not useful.
3999 This variable holds the name of the directory below which the
4000 user will install the package. Usually, this is /usr/local, and
4001 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4002 man pages in /usr/local/man, etc. It is only used to set defaults
4003 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4005 prefixexp (prefix.U):
4006 This variable holds the full absolute path of the directory below
4007 which the user will install the package. Derived from prefix.
4009 privlib (privlib.U):
4010 This variable contains the eventual value of the PRIVLIB symbol,
4011 which is the name of the private library for this package. It may
4012 have a ~ on the front. It is up to the makefile to eventually create
4013 this directory while performing installation (with ~ substitution).
4015 privlibexp (privlib.U):
4016 This variable is the ~name expanded version of privlib, so that you
4017 may use it directly in Makefiles or shell scripts.
4019 procselfexe (d_procselfexe.U):
4020 If d_procselfexe is defined, $procselfexe is the filename
4021 of the symbolic link pointing to the absolute pathname of
4022 the executing program.
4024 prototype (prototype.U):
4025 This variable holds the eventual value of CAN_PROTOTYPE, which
4026 indicates the C compiler can handle funciton prototypes.
4028 ptrsize (ptrsize.U):
4029 This variable contains the value of the PTRSIZE symbol, which
4030 indicates to the C program how many bytes there are in a pointer.
4032 quadkind (quadtype.U):
4033 This variable, if defined, encodes the type of a quad:
4034 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4036 quadtype (quadtype.U):
4037 This variable defines Quad_t to be something like long, int,
4038 long long, int64_t, or whatever type is used for 64-bit integers.
4040 randbits (randfunc.U):
4041 Indicates how many bits are produced by the function used to
4042 generate normalized random numbers.
4044 randfunc (randfunc.U):
4045 Indicates the name of the random number function to use.
4046 Values include drand48, random, and rand. In C programs,
4047 the 'Drand01' macro is defined to generate uniformly distributed
4048 random numbers over the range [0., 1.[ (see drand01 and nrand).
4050 random_r_proto (d_random_r.U):
4051 This variable encodes the prototype of random_r.
4052 It is zero if d_random_r is undef, and one of the
4053 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4056 randseedtype (randfunc.U):
4057 Indicates the type of the argument of the seedfunc.
4059 ranlib (orderlib.U):
4060 This variable is set to the pathname of the ranlib program, if it is
4061 needed to generate random libraries. Set to ":" if ar can generate
4062 random libraries or if random libraries are not supported
4064 rd_nodata (nblock_io.U):
4065 This variable holds the return code from read() when no data is
4066 present. It should be -1, but some systems return 0 when O_NDELAY is
4067 used, which is a shame because you cannot make the difference between
4068 no data and an EOF.. Sigh!
4070 readdir64_r_proto (d_readdir64_r.U):
4071 This variable encodes the prototype of readdir64_r.
4072 It is zero if d_readdir64_r is undef, and one of the
4073 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4076 readdir_r_proto (d_readdir_r.U):
4077 This variable encodes the prototype of readdir_r.
4078 It is zero if d_readdir_r is undef, and one of the
4079 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4082 revision (patchlevel.U):
4083 The value of revision comes from the patchlevel.h file.
4084 In a version number such as 5.6.1, this is the "5".
4085 In patchlevel.h, this is referred to as "PERL_REVISION".
4088 This variable is used internally by Configure to determine the
4089 full pathname (if any) of the rm program. After Configure runs,
4090 the value is reset to a plain "rm" and is not useful.
4093 This variable is defined but not used by Configure.
4094 The value is a plain '' and is not useful.
4097 This variable contains the command used by Configure
4098 to copy and execute a cross-compiled executable in the
4099 target host. Useful and available only during Perl build.
4100 Empty string '' if not cross-compiling.
4103 This variable contains 'true' or 'false' depending whether the
4104 nm extraction should be performed or not, according to the value
4105 of usenm and the flags on the Configure command line.
4107 sched_yield (d_pthread_y.U):
4108 This variable defines the way to yield the execution
4109 of the current thread.
4111 scriptdir (scriptdir.U):
4112 This variable holds the name of the directory in which the user wants
4113 to put publicly scripts for the package in question. It is either
4114 the same directory as for binaries, or a special one that can be
4115 mounted across different architectures, like /usr/share. Programs
4116 must be prepared to deal with ~name expansion.
4118 scriptdirexp (scriptdir.U):
4119 This variable is the same as scriptdir, but is filename expanded
4120 at configuration time, for programs not wanting to bother with it.
4123 This variable is used internally by Configure to determine the
4124 full pathname (if any) of the sed program. After Configure runs,
4125 the value is reset to a plain "sed" and is not useful.
4127 seedfunc (randfunc.U):
4128 Indicates the random number generating seed function.
4129 Values include srand48, srandom, and srand.
4131 selectminbits (selectminbits.U):
4132 This variable holds the minimum number of bits operated by select.
4133 That is, if you do select(n, ...), how many bits at least will be
4134 cleared in the masks if some activity is detected. Usually this
4135 is either n or 32*ceil(n/32), especially many little-endians do
4136 the latter. This is only useful if you have select(), naturally.
4138 selecttype (selecttype.U):
4139 This variable holds the type used for the 2nd, 3rd, and 4th
4140 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4141 is defined, and 'int *' otherwise. This is only useful if you
4142 have select(), naturally.
4145 This variable is defined but not used by Configure.
4146 The value is a plain '' and is not useful.
4148 setgrent_r_proto (d_setgrent_r.U):
4149 This variable encodes the prototype of setgrent_r.
4150 It is zero if d_setgrent_r is undef, and one of the
4151 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4154 sethostent_r_proto (d_sethostent_r.U):
4155 This variable encodes the prototype of sethostent_r.
4156 It is zero if d_sethostent_r is undef, and one of the
4157 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4160 setlocale_r_proto (d_setlocale_r.U):
4161 This variable encodes the prototype of setlocale_r.
4162 It is zero if d_setlocale_r is undef, and one of the
4163 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4166 setnetent_r_proto (d_setnetent_r.U):
4167 This variable encodes the prototype of setnetent_r.
4168 It is zero if d_setnetent_r is undef, and one of the
4169 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4172 setprotoent_r_proto (d_setprotoent_r.U):
4173 This variable encodes the prototype of setprotoent_r.
4174 It is zero if d_setprotoent_r is undef, and one of the
4175 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4178 setpwent_r_proto (d_setpwent_r.U):
4179 This variable encodes the prototype of setpwent_r.
4180 It is zero if d_setpwent_r is undef, and one of the
4181 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4184 setservent_r_proto (d_setservent_r.U):
4185 This variable encodes the prototype of setservent_r.
4186 It is zero if d_setservent_r is undef, and one of the
4187 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4191 This variable contains the full pathname of the shell used
4192 on this system to execute Bourne shell scripts. Usually, this will be
4193 /bin/sh, though it's possible that some systems will have /bin/ksh,
4194 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4196 This unit comes before Options.U, so you can't set sh with a '-D'
4197 option, though you can override this (and startsh)
4198 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4201 This variable is defined but not used by Configure.
4202 The value is a plain '' and is not useful.
4204 sharpbang (spitshell.U):
4205 This variable contains the string #! if this system supports that
4208 shmattype (d_shmat.U):
4209 This symbol contains the type of pointer returned by shmat().
4210 It can be 'void *' or 'char *'.
4212 shortsize (intsize.U):
4213 This variable contains the value of the SHORTSIZE symbol which
4214 indicates to the C program how many bytes there are in a short.
4216 shrpenv (libperl.U):
4217 If the user builds a shared libperl.so, then we need to tell the
4218 'perl' executable where it will be able to find the installed libperl.so.
4219 One way to do this on some systems is to set the environment variable
4220 LD_RUN_PATH to the directory that will be the final location of the
4221 shared libperl.so. The makefile can use this with something like
4222 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4224 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4227 See the main perl Makefile.SH for actual working usage.
4228 Alternatively, we might be able to use a command line option such
4229 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4230 $archlibexp/CORE (Linux).
4232 shsharp (spitshell.U):
4233 This variable tells further Configure units whether your sh can
4236 sig_count (sig_name.U):
4237 This variable holds a number larger than the largest valid
4238 signal number. This is usually the same as the NSIG macro.
4240 sig_name (sig_name.U):
4241 This variable holds the signal names, space separated. The leading
4242 SIG in signal name is removed. A ZERO is prepended to the list.
4243 This is currently not used, sig_name_init is used instead.
4245 sig_name_init (sig_name.U):
4246 This variable holds the signal names, enclosed in double quotes and
4247 separated by commas, suitable for use in the SIG_NAME definition
4248 below. A "ZERO" is prepended to the list, and the list is
4249 terminated with a plain 0. The leading SIG in signal names
4250 is removed. See sig_num.
4252 sig_num (sig_name.U):
4253 This variable holds the signal numbers, space separated. A ZERO is
4254 prepended to the list (corresponding to the fake SIGZERO).
4255 Those numbers correspond to the value of the signal listed
4256 in the same place within the sig_name list.
4257 This is currently not used, sig_num_init is used instead.
4259 sig_num_init (sig_name.U):
4260 This variable holds the signal numbers, enclosed in double quotes and
4261 separated by commas, suitable for use in the SIG_NUM definition
4262 below. A "ZERO" is prepended to the list, and the list is
4263 terminated with a plain 0.
4265 sig_size (sig_name.U):
4266 This variable contains the number of elements of the sig_name
4269 signal_t (d_voidsig.U):
4270 This variable holds the type of the signal handler (void or int).
4272 sitearch (sitearch.U):
4273 This variable contains the eventual value of the SITEARCH symbol,
4274 which is the name of the private library for this package. It may
4275 have a ~ on the front. It is up to the makefile to eventually create
4276 this directory while performing installation (with ~ substitution).
4277 The standard distribution will put nothing in this directory.
4278 After perl has been installed, users may install their own local
4279 architecture-dependent modules in this directory with
4280 MakeMaker Makefile.PL
4281 or equivalent. See INSTALL for details.
4283 sitearchexp (sitearch.U):
4284 This variable is the ~name expanded version of sitearch, so that you
4285 may use it directly in Makefiles or shell scripts.
4287 sitebin (sitebin.U):
4288 This variable holds the name of the directory in which the user wants
4289 to put add-on publicly executable files for the package in question. It
4290 is most often a local directory such as /usr/local/bin. Programs using
4291 this variable must be prepared to deal with ~name substitution.
4292 The standard distribution will put nothing in this directory.
4293 After perl has been installed, users may install their own local
4294 executables in this directory with
4295 MakeMaker Makefile.PL
4296 or equivalent. See INSTALL for details.
4298 sitebinexp (sitebin.U):
4299 This is the same as the sitebin variable, but is filename expanded at
4300 configuration time, for use in your makefiles.
4302 sitehtml1dir (sitehtml1dir.U):
4303 This variable contains the name of the directory in which site-specific
4304 html source pages are to be put. It is the responsibility of the
4305 Makefile.SH to get the value of this into the proper command.
4306 You must be prepared to do the ~name expansion yourself.
4307 The standard distribution will put nothing in this directory.
4308 After perl has been installed, users may install their own local
4309 html pages in this directory with
4310 MakeMaker Makefile.PL
4311 or equivalent. See INSTALL for details.
4313 sitehtml1direxp (sitehtml1dir.U):
4314 This variable is the same as the sitehtml1dir variable, but is filename
4315 expanded at configuration time, for convenient use in makefiles.
4317 sitehtml3dir (sitehtml3dir.U):
4318 This variable contains the name of the directory in which site-specific
4319 library html source pages are to be put. It is the responsibility of the
4320 Makefile.SH to get the value of this into the proper command.
4321 You must be prepared to do the ~name expansion yourself.
4322 The standard distribution will put nothing in this directory.
4323 After perl has been installed, users may install their own local
4324 library html pages in this directory with
4325 MakeMaker Makefile.PL
4326 or equivalent. See INSTALL for details.
4328 sitehtml3direxp (sitehtml3dir.U):
4329 This variable is the same as the sitehtml3dir variable, but is filename
4330 expanded at configuration time, for convenient use in makefiles.
4332 sitelib (sitelib.U):
4333 This variable contains the eventual value of the SITELIB symbol,
4334 which is the name of the private library for this package. It may
4335 have a ~ on the front. It is up to the makefile to eventually create
4336 this directory while performing installation (with ~ substitution).
4337 The standard distribution will put nothing in this directory.
4338 After perl has been installed, users may install their own local
4339 architecture-independent modules in this directory with
4340 MakeMaker Makefile.PL
4341 or equivalent. See INSTALL for details.
4343 sitelib_stem (sitelib.U):
4344 This variable is $sitelibexp with any trailing version-specific component
4345 removed. The elements in inc_version_list (inc_version_list.U) can
4346 be tacked onto this variable to generate a list of directories to search.
4348 sitelibexp (sitelib.U):
4349 This variable is the ~name expanded version of sitelib, so that you
4350 may use it directly in Makefiles or shell scripts.
4352 siteman1dir (siteman1dir.U):
4353 This variable contains the name of the directory in which site-specific
4354 manual source pages are to be put. It is the responsibility of the
4355 Makefile.SH to get the value of this into the proper command.
4356 You must be prepared to do the ~name expansion yourself.
4357 The standard distribution will put nothing in this directory.
4358 After perl has been installed, users may install their own local
4359 man1 pages in this directory with
4360 MakeMaker Makefile.PL
4361 or equivalent. See INSTALL for details.
4363 siteman1direxp (siteman1dir.U):
4364 This variable is the same as the siteman1dir variable, but is filename
4365 expanded at configuration time, for convenient use in makefiles.
4367 siteman3dir (siteman3dir.U):
4368 This variable contains the name of the directory in which site-specific
4369 library man source pages are to be put. It is the responsibility of the
4370 Makefile.SH to get the value of this into the proper command.
4371 You must be prepared to do the ~name expansion yourself.
4372 The standard distribution will put nothing in this directory.
4373 After perl has been installed, users may install their own local
4374 man3 pages in this directory with
4375 MakeMaker Makefile.PL
4376 or equivalent. See INSTALL for details.
4378 siteman3direxp (siteman3dir.U):
4379 This variable is the same as the siteman3dir variable, but is filename
4380 expanded at configuration time, for convenient use in makefiles.
4382 siteprefix (siteprefix.U):
4383 This variable holds the full absolute path of the directory below
4384 which the user will install add-on packages.
4385 See INSTALL for usage and examples.
4387 siteprefixexp (siteprefix.U):
4388 This variable holds the full absolute path of the directory below
4389 which the user will install add-on packages. Derived from siteprefix.
4391 sitescript (sitescript.U):
4392 This variable holds the name of the directory in which the user wants
4393 to put add-on publicly executable files for the package in question. It
4394 is most often a local directory such as /usr/local/bin. Programs using
4395 this variable must be prepared to deal with ~name substitution.
4396 The standard distribution will put nothing in this directory.
4397 After perl has been installed, users may install their own local
4398 scripts in this directory with
4399 MakeMaker Makefile.PL
4400 or equivalent. See INSTALL for details.
4402 sitescriptexp (sitescript.U):
4403 This is the same as the sitescript variable, but is filename expanded at
4404 configuration time, for use in your makefiles.
4406 sizesize (sizesize.U):
4407 This variable contains the size of a sizetype in bytes.
4409 sizetype (sizetype.U):
4410 This variable defines sizetype to be something like size_t,
4411 unsigned long, or whatever type is used to declare length
4412 parameters for string functions.
4415 This variable is defined but not used by Configure.
4416 The value is a plain '' and is not useful.
4419 This variable is defined but not used by Configure.
4420 The value is a plain '' and is not useful.
4423 This variable holds the extension used to identify shared libraries
4424 (also known as shared objects) on the system. Usually set to 'so'.
4426 sockethdr (d_socket.U):
4427 This variable has any cpp '-I' flags needed for socket support.
4429 socketlib (d_socket.U):
4430 This variable has the names of any libraries needed for socket support.
4432 socksizetype (socksizetype.U):
4433 This variable holds the type used for the size argument
4434 for various socket calls like accept. Usual values include
4435 socklen_t, size_t, and int.
4438 This variable is used internally by Configure to determine the
4439 full pathname (if any) of the sort program. After Configure runs,
4440 the value is reset to a plain "sort" and is not useful.
4442 spackage (package.U):
4443 This variable contains the name of the package being constructed,
4444 with the first letter uppercased, i.e. suitable for starting
4447 spitshell (spitshell.U):
4448 This variable contains the command necessary to spit out a runnable
4449 shell on this system. It is either cat or a grep '-v' for # comments.
4451 sPRId64 (quadfio.U):
4452 This variable, if defined, contains the string used by stdio to
4453 format 64-bit decimal numbers (format 'd') for output.
4455 sPRIeldbl (longdblfio.U):
4456 This variable, if defined, contains the string used by stdio to
4457 format long doubles (format 'e') for output.
4459 sPRIEUldbl (longdblfio.U):
4460 This variable, if defined, contains the string used by stdio to
4461 format long doubles (format 'E') for output.
4462 The 'U' in the name is to separate this from sPRIeldbl so that even
4463 case-blind systems can see the difference.
4465 sPRIfldbl (longdblfio.U):
4466 This variable, if defined, contains the string used by stdio to
4467 format long doubles (format 'f') for output.
4469 sPRIFUldbl (longdblfio.U):
4470 This variable, if defined, contains the string used by stdio to
4471 format long doubles (format 'F') for output.
4472 The 'U' in the name is to separate this from sPRIfldbl so that even
4473 case-blind systems can see the difference.
4475 sPRIgldbl (longdblfio.U):
4476 This variable, if defined, contains the string used by stdio to
4477 format long doubles (format 'g') for output.
4479 sPRIGUldbl (longdblfio.U):
4480 This variable, if defined, contains the string used by stdio to
4481 format long doubles (format 'G') for output.
4482 The 'U' in the name is to separate this from sPRIgldbl so that even
4483 case-blind systems can see the difference.
4485 sPRIi64 (quadfio.U):
4486 This variable, if defined, contains the string used by stdio to
4487 format 64-bit decimal numbers (format 'i') for output.
4489 sPRIo64 (quadfio.U):
4490 This variable, if defined, contains the string used by stdio to
4491 format 64-bit octal numbers (format 'o') for output.
4493 sPRIu64 (quadfio.U):
4494 This variable, if defined, contains the string used by stdio to
4495 format 64-bit unsigned decimal numbers (format 'u') for output.
4497 sPRIx64 (quadfio.U):
4498 This variable, if defined, contains the string used by stdio to
4499 format 64-bit hexadecimal numbers (format 'x') for output.
4501 sPRIXU64 (quadfio.U):
4502 This variable, if defined, contains the string used by stdio to
4503 format 64-bit hExADECimAl numbers (format 'X') for output.
4504 The 'U' in the name is to separate this from sPRIx64 so that even
4505 case-blind systems can see the difference.
4507 srand48_r_proto (d_srand48_r.U):
4508 This variable encodes the prototype of srand48_r.
4509 It is zero if d_srand48_r is undef, and one of the
4510 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4513 srandom_r_proto (d_srandom_r.U):
4514 This variable encodes the prototype of srandom_r.
4515 It is zero if d_srandom_r is undef, and one of the
4516 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4520 This variable holds the path to the package source. It is up to
4521 the Makefile to use this variable and set VPATH accordingly to
4522 find the sources remotely.
4524 sSCNfldbl (longdblfio.U):
4525 This variable, if defined, contains the string used by stdio to
4526 format long doubles (format 'f') for input.
4528 ssizetype (ssizetype.U):
4529 This variable defines ssizetype to be something like ssize_t,
4530 long or int. It is used by functions that return a count
4531 of bytes or an error condition. It must be a signed type.
4532 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4534 startperl (startperl.U):
4535 This variable contains the string to put on the front of a perl
4536 script to make sure (hopefully) that it runs with perl and not some
4537 shell. Of course, that leading line must be followed by the classical
4539 eval 'exec perl -S $0 ${1+"$@"}'
4540 if $running_under_some_shell;
4541 to guarantee perl startup should the shell execute the script. Note
4542 that this magic incatation is not understood by csh.
4544 startsh (startsh.U):
4545 This variable contains the string to put on the front of a shell
4546 script to make sure (hopefully) that it runs with sh and not some
4549 static_ext (Extensions.U):
4550 This variable holds a list of XS extension files we want to
4551 link statically into the package. It is used by Makefile.
4553 stdchar (stdchar.U):
4554 This variable conditionally defines STDCHAR to be the type of char
4555 used in stdio.h. It has the values "unsigned char" or "char".
4557 stdio_base (d_stdstdio.U):
4558 This variable defines how, given a FILE pointer, fp, to access the
4559 _base field (or equivalent) of stdio.h's FILE structure. This will
4560 be used to define the macro FILE_base(fp).
4562 stdio_bufsiz (d_stdstdio.U):
4563 This variable defines how, given a FILE pointer, fp, to determine
4564 the number of bytes store in the I/O buffer pointer to by the
4565 _base field (or equivalent) of stdio.h's FILE structure. This will
4566 be used to define the macro FILE_bufsiz(fp).
4568 stdio_cnt (d_stdstdio.U):
4569 This variable defines how, given a FILE pointer, fp, to access the
4570 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4571 be used to define the macro FILE_cnt(fp).
4573 stdio_filbuf (d_stdstdio.U):
4574 This variable defines how, given a FILE pointer, fp, to tell
4575 stdio to refill its internal buffers (?). This will
4576 be used to define the macro FILE_filbuf(fp).
4578 stdio_ptr (d_stdstdio.U):
4579 This variable defines how, given a FILE pointer, fp, to access the
4580 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4581 be used to define the macro FILE_ptr(fp).
4583 stdio_stream_array (stdio_streams.U):
4584 This variable tells the name of the array holding the stdio streams.
4585 Usual values include _iob, __iob, and __sF.
4587 strerror_r_proto (d_strerror_r.U):
4588 This variable encodes the prototype of strerror_r.
4589 It is zero if d_strerror_r is undef, and one of the
4590 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4593 strings (i_string.U):
4594 This variable holds the full path of the string header that will be
4595 used. Typically /usr/include/string.h or /usr/include/strings.h.
4598 This variable is defined but not used by Configure.
4599 The value is a plain '' and is not useful.
4601 subversion (patchlevel.U):
4602 The subversion level of this package.
4603 The value of subversion comes from the patchlevel.h file.
4604 In a version number such as 5.6.1, this is the "1".
4605 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4606 This is unique to perl.
4609 This variable holds the place where the manual is located on this
4610 system. It is not the place where the user wants to put his manual
4611 pages. Rather it is the place where Configure may look to find manual
4612 for unix commands (section 1 of the manual usually). See mansrc.
4615 This variable is defined but not used by Configure.
4616 The value is a plain '' and is not useful.
4619 This variable is defined but not used by Configure.
4620 The value is a plain '' and is not useful.
4622 targetarch (Cross.U):
4623 If cross-compiling, this variable contains the target architecture.
4624 If not, this will be empty.
4627 This variable is defined but not used by Configure.
4628 The value is a plain '' and is not useful.
4631 This variable is defined but not used by Configure.
4632 The value is a plain '' and is not useful.
4635 This variable is used internally by Configure to determine the
4636 full pathname (if any) of the test program. After Configure runs,
4637 the value is reset to a plain "test" and is not useful.
4639 timeincl (i_time.U):
4640 This variable holds the full path of the included time header(s).
4642 timetype (d_time.U):
4643 This variable holds the type returned by time(). It can be long,
4644 or time_t on BSD sites (in which case <sys/types.h> should be
4645 included). Anyway, the type Time_t should be used.
4647 tmpnam_r_proto (d_tmpnam_r.U):
4648 This variable encodes the prototype of tmpnam_r.
4649 It is zero if d_tmpnam_r is undef, and one of the
4650 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4654 This variable contains the command used by Configure
4655 to copy to from the target host. Useful and available
4656 only during Perl build.
4657 The string ':' if not cross-compiling.
4660 This variable is used internally by Configure to determine the
4661 full pathname (if any) of the touch program. After Configure runs,
4662 the value is reset to a plain "touch" and is not useful.
4665 This variable is used internally by Configure to determine the
4666 full pathname (if any) of the tr program. After Configure runs,
4667 the value is reset to a plain "tr" and is not useful.
4670 This variable contains the value to be passed to the tr(1)
4671 command to transliterate a newline. Typical values are
4672 '\012' and '\n'. This is needed for EBCDIC systems where
4673 newline is not necessarily '\012'.
4676 This variable is defined but not used by Configure.
4677 The value is a plain '' and is not useful.
4679 ttyname_r_proto (d_ttyname_r.U):
4680 This variable encodes the prototype of ttyname_r.
4681 It is zero if d_ttyname_r is undef, and one of the
4682 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4686 This variable is the size of an U16 in bytes.
4689 This variable contains the C type used for Perl's U16.
4692 This variable is the size of an U32 in bytes.
4695 This variable contains the C type used for Perl's U32.
4698 This variable is the size of an U64 in bytes.
4701 This variable contains the C type used for Perl's U64.
4704 This variable is the size of an U8 in bytes.
4707 This variable contains the C type used for Perl's U8.
4710 This variable contains the format string used for printing a Uid_t.
4712 uidsign (uidsign.U):
4713 This variable contains the signedness of a uidtype.
4714 1 for unsigned, -1 for signed.
4716 uidsize (uidsize.U):
4717 This variable contains the size of a uidtype in bytes.
4719 uidtype (uidtype.U):
4720 This variable defines Uid_t to be something like uid_t, int,
4721 ushort, or whatever type is used to declare user ids in the kernel.
4724 This variable is used internally by Configure to determine the
4725 full pathname (if any) of the uname program. After Configure runs,
4726 the value is reset to a plain "uname" and is not useful.
4729 This variable is used internally by Configure to determine the
4730 full pathname (if any) of the uniq program. After Configure runs,
4731 the value is reset to a plain "uniq" and is not useful.
4733 uquadtype (quadtype.U):
4734 This variable defines Uquad_t to be something like unsigned long,
4735 unsigned int, unsigned long long, uint64_t, or whatever type is
4736 used for 64-bit integers.
4738 use5005threads (usethreads.U):
4739 This variable conditionally defines the USE_5005THREADS symbol,
4740 and indicates that Perl should be built to use the 5.005-based
4741 threading implementation.
4743 use64bitall (use64bits.U):
4744 This variable conditionally defines the USE_64_BIT_ALL symbol,
4745 and indicates that 64-bit integer types should be used
4746 when available. The maximal possible
4747 64-bitness is employed: LP64 or ILP64, meaning that you will
4748 be able to use more than 2 gigabytes of memory. This mode is
4749 even more binary incompatible than USE_64_BIT_INT. You may not
4750 be able to run the resulting executable in a 32-bit CPU at all or
4751 you may need at least to reboot your OS to 64-bit mode.
4753 use64bitint (use64bits.U):
4754 This variable conditionally defines the USE_64_BIT_INT symbol,
4755 and indicates that 64-bit integer types should be used
4756 when available. The minimal possible 64-bitness
4757 is employed, just enough to get 64-bit integers into Perl.
4758 This may mean using for example "long longs", while your memory
4759 may still be limited to 2 gigabytes.
4761 usecrosscompile (Cross.U):
4762 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4763 and indicates that Perl has been cross-compiled.
4766 This variable indicates if the system supports dynamic
4767 loading of some sort. See also dlsrc and dlobj.
4769 usefaststdio (usefaststdio.U):
4770 This variable conditionally defines the USE_FAST_STDIO symbol,
4771 and indicates that Perl should be built to use 'fast stdio'.
4772 Defaults to define in Perls 5.8 and earlier, to undef later.
4774 useithreads (usethreads.U):
4775 This variable conditionally defines the USE_ITHREADS symbol,
4776 and indicates that Perl should be built to use the interpreter-based
4777 threading implementation.
4779 uselargefiles (uselfs.U):
4780 This variable conditionally defines the USE_LARGE_FILES symbol,
4781 and indicates that large file interfaces should be used when
4784 uselongdouble (uselongdbl.U):
4785 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4786 and indicates that long doubles should be used when available.
4788 usemallocwrap (mallocsrc.U):
4789 This variable contains y if we are wrapping malloc to prevent
4790 integer overflow during size calculations.
4792 usemorebits (usemorebits.U):
4793 This variable conditionally defines the USE_MORE_BITS symbol,
4794 and indicates that explicit 64-bit interfaces and long doubles
4795 should be used when available.
4797 usemultiplicity (usemultiplicity.U):
4798 This variable conditionally defines the MULTIPLICITY symbol,
4799 and indicates that Perl should be built to use multiplicity.
4801 usemymalloc (mallocsrc.U):
4802 This variable contains y if the malloc that comes with this package
4803 is desired over the system's version of malloc. People often include
4804 special versions of malloc for effiency, but such versions are often
4805 less portable. See also mallocsrc and mallocobj.
4806 If this is 'y', then -lmalloc is removed from $libs.
4809 This variable contains 'true' or 'false' depending whether the
4810 nm extraction is wanted or not.
4812 useopcode (Extensions.U):
4813 This variable holds either 'true' or 'false' to indicate
4814 whether the Opcode extension should be used. The sole
4815 use for this currently is to allow an easy mechanism
4816 for users to skip the Opcode extension from the Configure
4819 useperlio (useperlio.U):
4820 This variable conditionally defines the USE_PERLIO symbol,
4821 and indicates that the PerlIO abstraction should be
4824 useposix (Extensions.U):
4825 This variable holds either 'true' or 'false' to indicate
4826 whether the POSIX extension should be used. The sole
4827 use for this currently is to allow an easy mechanism
4828 for hints files to indicate that POSIX will not compile
4829 on a particular system.
4831 usereentrant (usethreads.U):
4832 This variable conditionally defines the USE_REENTRANT_API symbol,
4833 which indicates that the thread code may try to use the various
4834 _r versions of library functions. This is only potentially
4835 meaningful if usethreads is set and is very experimental, it is
4836 not even prompted for.
4838 userelocatableinc (bin.U):
4839 This variable is set to true to indicate that perl should relocate
4840 @INC entries at runtime based on the path to the perl binary.
4841 Any @INC paths starting ".../" are relocated relative to the directory
4842 containing the perl binary, and a logical cleanup of the path is then
4843 made around the join point (removing "dir/../" pairs)
4846 This variable is set to true when the user agrees to use sfio.
4847 It is set to false when sfio is not available or when the user
4848 explicitely requests not to use sfio. It is here primarily so
4849 that command-line settings can override the auto-detection of
4850 d_sfio without running into a "WHOA THERE".
4852 useshrplib (libperl.U):
4853 This variable is set to 'true' if the user wishes
4854 to build a shared libperl, and 'false' otherwise.
4856 usesitecustomize (d_sitecustomize.U):
4857 This variable is set to true when the user requires a mechanism that
4858 allows the sysadmin to add entries to @INC at runtime. This variable
4859 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
4861 usesocks (usesocks.U):
4862 This variable conditionally defines the USE_SOCKS symbol,
4863 and indicates that Perl should be built to use SOCKS.
4865 usethreads (usethreads.U):
4866 This variable conditionally defines the USE_THREADS symbol,
4867 and indicates that Perl should be built to use threads.
4869 usevendorprefix (vendorprefix.U):
4870 This variable tells whether the vendorprefix
4871 and consequently other vendor* paths are in use.
4873 usevfork (d_vfork.U):
4874 This variable is set to true when the user accepts to use vfork.
4875 It is set to false when no vfork is available or when the user
4876 explicitely requests not to use vfork.
4879 This variable holds the path of the include files, which is
4880 usually /usr/include. It is mainly used by other Configure units.
4883 This variable is defined but not used by Configure.
4884 The value is a plain '' and is not useful.
4886 uvoformat (perlxvf.U):
4887 This variable contains the format string used for printing
4888 a Perl UV as an unsigned octal integer.
4891 This variable is the size of a UV in bytes.
4894 This variable contains the C type used for Perl's UV.
4896 uvuformat (perlxvf.U):
4897 This variable contains the format string used for printing
4898 a Perl UV as an unsigned decimal integer.
4900 uvxformat (perlxvf.U):
4901 This variable contains the format string used for printing
4902 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4904 uvXUformat (perlxvf.U):
4905 This variable contains the format string used for printing
4906 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4908 vendorarch (vendorarch.U):
4909 This variable contains the value of the PERL_VENDORARCH symbol.
4910 It may have a ~ on the front.
4911 The standard distribution will put nothing in this directory.
4912 Vendors who distribute perl may wish to place their own
4913 architecture-dependent modules and extensions in this directory with
4914 MakeMaker Makefile.PL INSTALLDIRS=vendor
4915 or equivalent. See INSTALL for details.
4917 vendorarchexp (vendorarch.U):
4918 This variable is the ~name expanded version of vendorarch, so that you
4919 may use it directly in Makefiles or shell scripts.
4921 vendorbin (vendorbin.U):
4922 This variable contains the eventual value of the VENDORBIN symbol.
4923 It may have a ~ on the front.
4924 The standard distribution will put nothing in this directory.
4925 Vendors who distribute perl may wish to place additional
4926 binaries in this directory with
4927 MakeMaker Makefile.PL INSTALLDIRS=vendor
4928 or equivalent. See INSTALL for details.
4930 vendorbinexp (vendorbin.U):
4931 This variable is the ~name expanded version of vendorbin, so that you
4932 may use it directly in Makefiles or shell scripts.
4934 vendorhtml1dir (vendorhtml1dir.U):
4935 This variable contains the name of the directory for html
4936 pages. It may have a ~ on the front.
4937 The standard distribution will put nothing in this directory.
4938 Vendors who distribute perl may wish to place their own
4939 html pages in this directory with
4940 MakeMaker Makefile.PL INSTALLDIRS=vendor
4941 or equivalent. See INSTALL for details.
4943 vendorhtml1direxp (vendorhtml1dir.U):
4944 This variable is the ~name expanded version of vendorhtml1dir, so that you
4945 may use it directly in Makefiles or shell scripts.
4947 vendorhtml3dir (vendorhtml3dir.U):
4948 This variable contains the name of the directory for html
4949 library pages. It may have a ~ on the front.
4950 The standard distribution will put nothing in this directory.
4951 Vendors who distribute perl may wish to place their own
4952 html pages for modules and extensions in this directory with
4953 MakeMaker Makefile.PL INSTALLDIRS=vendor
4954 or equivalent. See INSTALL for details.
4956 vendorhtml3direxp (vendorhtml3dir.U):
4957 This variable is the ~name expanded version of vendorhtml3dir, so that you
4958 may use it directly in Makefiles or shell scripts.
4960 vendorlib (vendorlib.U):
4961 This variable contains the eventual value of the VENDORLIB symbol,
4962 which is the name of the private library for this package.
4963 The standard distribution will put nothing in this directory.
4964 Vendors who distribute perl may wish to place their own
4965 modules in this directory with
4966 MakeMaker Makefile.PL INSTALLDIRS=vendor
4967 or equivalent. See INSTALL for details.
4969 vendorlib_stem (vendorlib.U):
4970 This variable is $vendorlibexp with any trailing version-specific component
4971 removed. The elements in inc_version_list (inc_version_list.U) can
4972 be tacked onto this variable to generate a list of directories to search.
4974 vendorlibexp (vendorlib.U):
4975 This variable is the ~name expanded version of vendorlib, so that you
4976 may use it directly in Makefiles or shell scripts.
4978 vendorman1dir (vendorman1dir.U):
4979 This variable contains the name of the directory for man1
4980 pages. It may have a ~ on the front.
4981 The standard distribution will put nothing in this directory.
4982 Vendors who distribute perl may wish to place their own
4983 man1 pages in this directory with
4984 MakeMaker Makefile.PL INSTALLDIRS=vendor
4985 or equivalent. See INSTALL for details.
4987 vendorman1direxp (vendorman1dir.U):
4988 This variable is the ~name expanded version of vendorman1dir, so that you
4989 may use it directly in Makefiles or shell scripts.
4991 vendorman3dir (vendorman3dir.U):
4992 This variable contains the name of the directory for man3
4993 pages. It may have a ~ on the front.
4994 The standard distribution will put nothing in this directory.
4995 Vendors who distribute perl may wish to place their own
4996 man3 pages in this directory with
4997 MakeMaker Makefile.PL INSTALLDIRS=vendor
4998 or equivalent. See INSTALL for details.
5000 vendorman3direxp (vendorman3dir.U):
5001 This variable is the ~name expanded version of vendorman3dir, so that you
5002 may use it directly in Makefiles or shell scripts.
5004 vendorprefix (vendorprefix.U):
5005 This variable holds the full absolute path of the directory below
5006 which the vendor will install add-on packages.
5007 See INSTALL for usage and examples.
5009 vendorprefixexp (vendorprefix.U):
5010 This variable holds the full absolute path of the directory below
5011 which the vendor will install add-on packages. Derived from vendorprefix.
5013 vendorscript (vendorscript.U):
5014 This variable contains the eventual value of the VENDORSCRIPT symbol.
5015 It may have a ~ on the front.
5016 The standard distribution will put nothing in this directory.
5017 Vendors who distribute perl may wish to place additional
5018 executable scripts in this directory with
5019 MakeMaker Makefile.PL INSTALLDIRS=vendor
5020 or equivalent. See INSTALL for details.
5022 vendorscriptexp (vendorscript.U):
5023 This variable is the ~name expanded version of vendorscript, so that you
5024 may use it directly in Makefiles or shell scripts.
5026 version (patchlevel.U):
5027 The full version number of this package, such as 5.6.1 (or 5_6_1).
5028 This combines revision, patchlevel, and subversion to get the
5029 full version number, including any possible subversions.
5030 This is suitable for use as a directory name, and hence is
5031 filesystem dependent.
5033 version_patchlevel_string (patchlevel.U):
5034 This is a string combining version, subversion and
5035 perl_patchlevel (if perl_patchlevel is non-zero).
5036 It is typically something like
5037 'version 7 subversion 1' or
5038 'version 7 subversion 1 patchlevel 11224'
5039 It is computed here to avoid duplication of code in myconfig.SH
5042 versiononly (versiononly.U):
5043 If set, this symbol indicates that only the version-specific
5044 components of a perl installation should be installed.
5045 This may be useful for making a test installation of a new
5046 version without disturbing the existing installation.
5047 Setting versiononly is equivalent to setting installperl's -v option.
5048 In particular, the non-versioned scripts and programs such as
5049 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5050 (see INSTALL for a more complete list). Nor are the man
5052 Usually, this is undef.
5055 This variable is defined but not used by Configure.
5056 The value is a plain '' and is not useful.
5058 voidflags (voidflags.U):
5059 This variable contains the eventual value of the VOIDFLAGS symbol,
5060 which indicates how much support of the void type is given by this
5061 compiler. See VOIDFLAGS for more info.
5064 This variable holds extra path (space-separated) used to find
5065 libraries on this platform, for example CPU-specific libraries
5066 (on multi-CPU platforms) may be listed here.
5069 This variable holds the name of the compiler compiler we
5070 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5073 This variable contains any additional yacc flags desired by the
5074 user. It is up to the Makefile to use this.
5077 This variable is defined but not used by Configure.
5078 The value is a plain '' and is not useful.
5081 This variable is used internally by Configure to determine the
5082 full pathname (if any) of the zip program. After Configure runs,
5083 the value is reset to a plain "zip" and is not useful.