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.
248 This variable is defined but not used by Configure.
249 The value is a plain '' and is not useful.
252 This variable is used internally by Configure to determine the
253 full pathname (if any) of the chmod program. After Configure runs,
254 the value is reset to a plain "chmod" and is not useful.
257 This variable is defined but not used by Configure.
258 The value is a plain '' and is not useful.
260 clocktype (d_times.U):
261 This variable holds the type returned by times(). It can be long,
262 or clock_t on BSD sites (in which case <sys/types.h> should be
266 This variable is used internally by Configure to determine the
267 full pathname (if any) of the comm program. After Configure runs,
268 the value is reset to a plain "comm" and is not useful.
271 This variable is defined but not used by Configure.
272 The value is a plain '' and is not useful.
274 contains (contains.U):
275 This variable holds the command to do a grep with a proper return
276 status. On most sane systems it is simply "grep". On insane systems
277 it is a grep followed by a cat followed by a test. This variable
278 is primarily for the use of other Configure units.
281 This variable is used internally by Configure to determine the
282 full pathname (if any) of the cp program. After Configure runs,
283 the value is reset to a plain "cp" and is not useful.
286 This variable is defined but not used by Configure.
287 The value is a plain '' and is not useful.
290 This variable is used internally by Configure to determine the
291 full pathname (if any) of the cpp program. After Configure runs,
292 the value is reset to a plain "cpp" and is not useful.
294 cpp_stuff (cpp_stuff.U):
295 This variable contains an identification of the concatenation mechanism
296 used by the C preprocessor.
298 cppccsymbols (Cppsym.U):
299 The variable contains the symbols defined by the C compiler
300 when it calls cpp. The symbols defined by the cc alone or cpp
301 alone are not in this list, see ccsymbols and cppsymbols.
302 The list is a space-separated list of symbol=value tokens.
304 cppflags (ccflags.U):
305 This variable holds the flags that will be passed to the C pre-
306 processor. It is up to the Makefile to use it.
308 cpplast (cppstdin.U):
309 This variable has the same functionality as cppminus, only it applies
310 to cpprun and not cppstdin.
312 cppminus (cppstdin.U):
313 This variable contains the second part of the string which will invoke
314 the C preprocessor on the standard input and produce to standard
315 output. This variable will have the value "-" if cppstdin needs
316 a minus to specify standard input, otherwise the value is "".
319 This variable contains the command which will invoke a C preprocessor
320 on standard input and put the output to stdout. It is guaranteed not
321 to be a wrapper and may be a null string if no preprocessor can be
322 made directly available. This preprocessor might be different from the
323 one used by the C compiler. Don't forget to append cpplast after the
324 preprocessor options.
326 cppstdin (cppstdin.U):
327 This variable contains the command which will invoke the C
328 preprocessor on standard input and put the output to stdout.
329 It is primarily used by other Configure units that ask about
330 preprocessor symbols.
332 cppsymbols (Cppsym.U):
333 The variable contains the symbols defined by the C preprocessor
334 alone. The symbols defined by cc or by cc when it calls cpp are
335 not in this list, see ccsymbols and cppccsymbols.
336 The list is a space-separated list of symbol=value tokens.
338 crypt_r_proto (d_crypt_r.U):
339 This variable encodes the prototype of crypt_r.
340 It is zero if d_crypt_r is undef, and one of the
341 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
344 cryptlib (d_crypt.U):
345 This variable holds -lcrypt or the path to a libcrypt.a archive if
346 the crypt() function is not defined in the standard C library. It is
347 up to the Makefile to use this.
350 This variable is used internally by Configure to determine the
351 full pathname (if any) of the csh program. After Configure runs,
352 the value is reset to a plain "csh" and is not useful.
354 ctermid_r_proto (d_ctermid_r.U):
355 This variable encodes the prototype of ctermid_r.
356 It is zero if d_ctermid_r is undef, and one of the
357 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
360 ctime_r_proto (d_ctime_r.U):
361 This variable encodes the prototype of ctime_r.
362 It is zero if d_ctime_r is undef, and one of the
363 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
366 d__fwalk (d__fwalk.U):
367 This variable conditionally defines HAS__FWALK if _fwalk() is
368 available to apply a function to all the file handles.
370 d_access (d_access.U):
371 This variable conditionally defines HAS_ACCESS if the access() system
372 call is available to check for access permissions using real IDs.
374 d_accessx (d_accessx.U):
375 This variable conditionally defines the HAS_ACCESSX symbol, which
376 indicates to the C program that the accessx() routine is available.
379 This variable conditionally defines the HAS_AINTL symbol, which
380 indicates to the C program that the aintl() routine is available.
381 If copysignl is also present we can emulate modfl.
384 This variable conditionally defines the HAS_ALARM symbol, which
385 indicates to the C program that the alarm() routine is available.
387 d_archlib (archlib.U):
388 This variable conditionally defines ARCHLIB to hold the pathname
389 of architecture-dependent library files for $package. If
390 $archlib is the same as $privlib, then this is set to undef.
392 d_asctime_r (d_asctime_r.U):
393 This variable conditionally defines the HAS_ASCTIME_R symbol,
394 which indicates to the C program that the asctime_r()
395 routine is available.
398 This variable conditionally defines the HAS_ATOLF symbol, which
399 indicates to the C program that the atolf() routine is available.
402 This variable conditionally defines the HAS_ATOLL symbol, which
403 indicates to the C program that the atoll() routine is available.
405 d_attribute_format (d_attribut.U):
406 This variable conditionally defines HASATTRIBUTE_FORMAT, which
407 indicates the C compiler can check for printf-like formats.
409 d_attribute_malloc (d_attribut.U):
410 This variable conditionally defines HASATTRIBUTE_MALLOC, which
411 indicates the C compiler can understand functions as having
412 malloc-like semantics.
414 d_attribute_nonnull (d_attribut.U):
415 This variable conditionally defines HASATTRIBUTE_NONNULL, which
416 indicates that the C compiler can know that certain arguments
417 must not be NULL, and will check accordingly at compile time.
419 d_attribute_noreturn (d_attribut.U):
420 This variable conditionally defines HASATTRIBUTE_NORETURN, which
421 indicates that the C compiler can know that certain functions
422 are guaranteed never to return.
424 d_attribute_pure (d_attribut.U):
425 This variable conditionally defines HASATTRIBUTE_PURE, which
426 indicates that the C compiler can know that certain functions
427 are "pure" functions, meaning that they have no side effects, and
428 only rely on function input and/or global data for their results.
430 d_attribute_unused (d_attribut.U):
431 This variable conditionally defines HASATTRIBUTE_UNUSED, which
432 indicates that the C compiler can know that certain variables
433 and arguments may not always be used, and to not throw warnings
434 if they don't get used.
436 d_attribute_warn_unused_result (d_attribut.U):
437 This variable conditionally defines
438 HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
439 compiler can know that certain functions have a return values
440 that must not be ignored, such as malloc() or open().
443 This variable conditionally defines the HAS_BCMP symbol if
444 the bcmp() routine is available to compare strings.
447 This variable conditionally defines the HAS_BCOPY symbol if
448 the bcopy() routine is available to copy strings.
451 This symbol conditionally defines the symbol BSD when running on a
454 d_bsdgetpgrp (d_getpgrp.U):
455 This variable conditionally defines USE_BSD_GETPGRP if
456 getpgrp needs one arguments whereas USG one needs none.
458 d_bsdsetpgrp (d_setpgrp.U):
459 This variable conditionally defines USE_BSD_SETPGRP if
460 setpgrp needs two arguments whereas USG one needs none.
461 See also d_setpgid for a POSIX interface.
463 d_builtin_choose_expr (d_builtin.U):
464 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
465 indicates that the compiler supports __builtin_choose_expr(x,y,z).
466 This built-in function is analogous to the "x?y:z" operator in C,
467 except that the expression returned has its type unaltered by
468 promotion rules. Also, the built-in function does not evaluate
469 the expression that was not chosen.
471 d_builtin_expect (d_builtin.U):
472 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
473 that the compiler supports __builtin_expect(exp,c). You may use
474 __builtin_expect to provide the compiler with branch prediction
478 This variable conditionally defines the HAS_BZERO symbol if
479 the bzero() routine is available to set memory to 0.
481 d_c99_variadic_macros (d_c99_variadic.U):
482 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
483 symbol, which indicates to the C program that C99 variadic macros
486 d_casti32 (d_casti32.U):
487 This variable conditionally defines CASTI32, which indicates
488 whether the C compiler can cast large floats to 32-bit ints.
490 d_castneg (d_castneg.U):
491 This variable conditionally defines CASTNEG, which indicates
492 wether the C compiler can cast negative float to unsigned.
494 d_charvspr (d_vprintf.U):
495 This variable conditionally defines CHARVSPRINTF if this system
496 has vsprintf returning type (char*). The trend seems to be to
497 declare it as "int vsprintf()".
500 This variable conditionally defines the HAS_CHOWN symbol, which
501 indicates to the C program that the chown() routine is available.
503 d_chroot (d_chroot.U):
504 This variable conditionally defines the HAS_CHROOT symbol, which
505 indicates to the C program that the chroot() routine is available.
507 d_chsize (d_chsize.U):
508 This variable conditionally defines the CHSIZE symbol, which
509 indicates to the C program that the chsize() routine is available
510 to truncate files. You might need a -lx to get this routine.
513 This variable conditionally defines the HAS_CLASS symbol, which
514 indicates to the C program that the class() routine is available.
516 d_clearenv (d_clearenv.U):
517 This variable conditionally defines the HAS_CLEARENV symbol, which
518 indicates to the C program that the clearenv () routine is available.
520 d_closedir (d_closedir.U):
521 This variable conditionally defines HAS_CLOSEDIR if closedir() is
524 d_cmsghdr_s (d_cmsghdr_s.U):
525 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
526 which indicates that the struct cmsghdr is supported.
529 This variable conditionally defines the HASCONST symbol, which
530 indicates to the C program that this C compiler knows about the
533 d_copysignl (d_copysignl.U):
534 This variable conditionally defines the HAS_COPYSIGNL symbol, which
535 indicates to the C program that the copysignl() routine is available.
536 If aintl is also present we can emulate modfl.
538 d_cplusplus (d_cplusplus.U):
539 This variable conditionally defines the USE_CPLUSPLUS symbol, which
540 indicates that a C++ compiler was used to compiled Perl and will be
541 used to compile extensions.
544 This variable conditionally defines the CRYPT symbol, which
545 indicates to the C program that the crypt() routine is available
546 to encrypt passwords and the like.
548 d_crypt_r (d_crypt_r.U):
549 This variable conditionally defines the HAS_CRYPT_R symbol,
550 which indicates to the C program that the crypt_r()
551 routine is available.
554 This variable conditionally defines the CSH symbol, which
555 indicates to the C program that the C-shell exists.
557 d_ctermid (d_ctermid.U):
558 This variable conditionally defines CTERMID if ctermid() is
559 available to generate filename for terminal.
561 d_ctermid_r (d_ctermid_r.U):
562 This variable conditionally defines the HAS_CTERMID_R symbol,
563 which indicates to the C program that the ctermid_r()
564 routine is available.
566 d_ctime_r (d_ctime_r.U):
567 This variable conditionally defines the HAS_CTIME_R symbol,
568 which indicates to the C program that the ctime_r()
569 routine is available.
571 d_cuserid (d_cuserid.U):
572 This variable conditionally defines the HAS_CUSERID symbol, which
573 indicates to the C program that the cuserid() routine is available
574 to get character login names.
576 d_dbl_dig (d_dbl_dig.U):
577 This variable conditionally defines d_dbl_dig if this system's
578 header files provide DBL_DIG, which is the number of significant
579 digits in a double precision number.
581 d_dbminitproto (d_dbminitproto.U):
582 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
583 which indicates to the C program that the system provides
584 a prototype for the dbminit() function. Otherwise, it is
585 up to the program to supply one.
587 d_difftime (d_difftime.U):
588 This variable conditionally defines the HAS_DIFFTIME symbol, which
589 indicates to the C program that the difftime() routine is available.
591 d_dir_dd_fd (d_dir_dd_fd.U):
592 This variable conditionally defines the HAS_DIR_DD_FD symbol, which
593 indicates that the DIR directory stream type contains a member
594 variable called dd_fd.
597 This variable conditionally defines the HAS_DIRFD constant,
598 which indicates to the C program that dirfd() is available
599 to return the file descriptor of a directory stream.
601 d_dirnamlen (i_dirent.U):
602 This variable conditionally defines DIRNAMLEN, which indicates
603 to the C program that the length of directory entry names is
604 provided by a d_namelen field.
606 d_dlerror (d_dlerror.U):
607 This variable conditionally defines the HAS_DLERROR symbol, which
608 indicates to the C program that the dlerror() routine is available.
610 d_dlopen (d_dlopen.U):
611 This variable conditionally defines the HAS_DLOPEN symbol, which
612 indicates to the C program that the dlopen() routine is available.
614 d_dlsymun (d_dlsymun.U):
615 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
616 indicates that we need to prepend an underscore to the symbol
617 name before calling dlsym().
619 d_dosuid (d_dosuid.U):
620 This variable conditionally defines the symbol DOSUID, which
621 tells the C program that it should insert setuid emulation code
622 on hosts which have setuid #! scripts disabled.
624 d_drand48_r (d_drand48_r.U):
625 This variable conditionally defines the HAS_DRAND48_R symbol,
626 which indicates to the C program that the drand48_r()
627 routine is available.
629 d_drand48proto (d_drand48proto.U):
630 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
631 which indicates to the C program that the system provides
632 a prototype for the drand48() function. Otherwise, it is
633 up to the program to supply one.
636 This variable conditionally defines HAS_DUP2 if dup2() is
637 available to duplicate file descriptors.
639 d_eaccess (d_eaccess.U):
640 This variable conditionally defines the HAS_EACCESS symbol, which
641 indicates to the C program that the eaccess() routine is available.
643 d_endgrent (d_endgrent.U):
644 This variable conditionally defines the HAS_ENDGRENT symbol, which
645 indicates to the C program that the endgrent() routine is available
646 for sequential access of the group database.
648 d_endgrent_r (d_endgrent_r.U):
649 This variable conditionally defines the HAS_ENDGRENT_R symbol,
650 which indicates to the C program that the endgrent_r()
651 routine is available.
653 d_endhent (d_endhent.U):
654 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
655 available to close whatever was being used for host queries.
657 d_endhostent_r (d_endhostent_r.U):
658 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
659 which indicates to the C program that the endhostent_r()
660 routine is available.
662 d_endnent (d_endnent.U):
663 This variable conditionally defines HAS_ENDNETENT if endnetent() is
664 available to close whatever was being used for network queries.
666 d_endnetent_r (d_endnetent_r.U):
667 This variable conditionally defines the HAS_ENDNETENT_R symbol,
668 which indicates to the C program that the endnetent_r()
669 routine is available.
671 d_endpent (d_endpent.U):
672 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
673 available to close whatever was being used for protocol queries.
675 d_endprotoent_r (d_endprotoent_r.U):
676 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
677 which indicates to the C program that the endprotoent_r()
678 routine is available.
680 d_endpwent (d_endpwent.U):
681 This variable conditionally defines the HAS_ENDPWENT symbol, which
682 indicates to the C program that the endpwent() routine is available
683 for sequential access of the passwd database.
685 d_endpwent_r (d_endpwent_r.U):
686 This variable conditionally defines the HAS_ENDPWENT_R symbol,
687 which indicates to the C program that the endpwent_r()
688 routine is available.
690 d_endsent (d_endsent.U):
691 This variable conditionally defines HAS_ENDSERVENT if endservent() is
692 available to close whatever was being used for service queries.
694 d_endservent_r (d_endservent_r.U):
695 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
696 which indicates to the C program that the endservent_r()
697 routine is available.
699 d_eofnblk (nblock_io.U):
700 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
701 when reading from a non-blocking I/O source.
704 This variable conditionally defines the symbols EUNICE and VAX, which
705 alerts the C program that it must deal with ideosyncracies of VMS.
707 d_faststdio (d_faststdio.U):
708 This variable conditionally defines the HAS_FAST_STDIO symbol,
709 which indicates to the C program that the "fast stdio" is available
710 to manipulate the stdio buffers directly.
712 d_fchdir (d_fchdir.U):
713 This variable conditionally defines the HAS_FCHDIR symbol, which
714 indicates to the C program that the fchdir() routine is available.
716 d_fchmod (d_fchmod.U):
717 This variable conditionally defines the HAS_FCHMOD symbol, which
718 indicates to the C program that the fchmod() routine is available
719 to change mode of opened files.
721 d_fchown (d_fchown.U):
722 This variable conditionally defines the HAS_FCHOWN symbol, which
723 indicates to the C program that the fchown() routine is available
724 to change ownership of opened files.
727 This variable conditionally defines the HAS_FCNTL symbol, and indicates
728 whether the fcntl() function exists
730 d_fcntl_can_lock (d_fcntl_can_lock.U):
731 This variable conditionally defines the FCNTL_CAN_LOCK symbol
732 and indicates whether file locking with fcntl() works.
734 d_fd_macros (d_fd_set.U):
735 This variable contains the eventual value of the HAS_FD_MACROS symbol,
736 which indicates if your C compiler knows about the macros which
737 manipulate an fd_set.
739 d_fd_set (d_fd_set.U):
740 This variable contains the eventual value of the HAS_FD_SET symbol,
741 which indicates if your C compiler knows about the fd_set typedef.
743 d_fds_bits (d_fd_set.U):
744 This variable contains the eventual value of the HAS_FDS_BITS symbol,
745 which indicates if your fd_set typedef contains the fds_bits member.
746 If you have an fd_set typedef, but the dweebs who installed it did
747 a half-fast job and neglected to provide the macros to manipulate
748 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
750 d_fgetpos (d_fgetpos.U):
751 This variable conditionally defines HAS_FGETPOS if fgetpos() is
752 available to get the file position indicator.
754 d_finite (d_finite.U):
755 This variable conditionally defines the HAS_FINITE symbol, which
756 indicates to the C program that the finite() routine is available.
758 d_finitel (d_finitel.U):
759 This variable conditionally defines the HAS_FINITEL symbol, which
760 indicates to the C program that the finitel() routine is available.
762 d_flexfnam (d_flexfnam.U):
763 This variable conditionally defines the FLEXFILENAMES symbol, which
764 indicates that the system supports filenames longer than 14 characters.
767 This variable conditionally defines HAS_FLOCK if flock() is
768 available to do file locking.
770 d_flockproto (d_flockproto.U):
771 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
772 which indicates to the C program that the system provides
773 a prototype for the flock() function. Otherwise, it is
774 up to the program to supply one.
777 This variable conditionally defines the HAS_FORK symbol, which
778 indicates to the C program that the fork() routine is available.
780 d_fp_class (d_fp_class.U):
781 This variable conditionally defines the HAS_FP_CLASS symbol, which
782 indicates to the C program that the fp_class() routine is available.
784 d_fpathconf (d_pathconf.U):
785 This variable conditionally defines the HAS_FPATHCONF symbol, which
786 indicates to the C program that the pathconf() routine is available
787 to determine file-system related limits and options associated
788 with a given open file descriptor.
790 d_fpclass (d_fpclass.U):
791 This variable conditionally defines the HAS_FPCLASS symbol, which
792 indicates to the C program that the fpclass() routine is available.
794 d_fpclassify (d_fpclassify.U):
795 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
796 indicates to the C program that the fpclassify() routine is available.
798 d_fpclassl (d_fpclassl.U):
799 This variable conditionally defines the HAS_FPCLASSL symbol, which
800 indicates to the C program that the fpclassl() routine is available.
802 d_fpos64_t (d_fpos64_t.U):
803 This symbol will be defined if the C compiler supports fpos64_t.
805 d_frexpl (d_frexpl.U):
806 This variable conditionally defines the HAS_FREXPL symbol, which
807 indicates to the C program that the frexpl() routine is available.
809 d_fs_data_s (d_fs_data_s.U):
810 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
811 which indicates that the struct fs_data is supported.
813 d_fseeko (d_fseeko.U):
814 This variable conditionally defines the HAS_FSEEKO symbol, which
815 indicates to the C program that the fseeko() routine is available.
817 d_fsetpos (d_fsetpos.U):
818 This variable conditionally defines HAS_FSETPOS if fsetpos() is
819 available to set the file position indicator.
821 d_fstatfs (d_fstatfs.U):
822 This variable conditionally defines the HAS_FSTATFS symbol, which
823 indicates to the C program that the fstatfs() routine is available.
825 d_fstatvfs (d_statvfs.U):
826 This variable conditionally defines the HAS_FSTATVFS symbol, which
827 indicates to the C program that the fstatvfs() routine is available.
830 This variable conditionally defines the HAS_FSYNC symbol, which
831 indicates to the C program that the fsync() routine is available.
833 d_ftello (d_ftello.U):
834 This variable conditionally defines the HAS_FTELLO symbol, which
835 indicates to the C program that the ftello() routine is available.
838 This variable conditionally defines the HAS_FTIME symbol, which indicates
839 that the ftime() routine exists. The ftime() routine is basically
840 a sub-second accuracy clock.
842 d_futimes (d_futimes.U):
843 This variable conditionally defines the HAS_FUTIMES symbol, which
844 indicates to the C program that the futimes() routine is available.
846 d_Gconvert (d_gconvert.U):
847 This variable holds what Gconvert is defined as to convert
848 floating point numbers into strings. By default, Configure
849 sets this macro to use the first of gconvert, gcvt, or sprintf
850 that pass sprintf-%g-like behaviour tests. If perl is using
851 long doubles, the macro uses the first of the following
852 functions that pass Configure's tests: qgcvt, sprintf (if
853 Configure knows how to make sprintf format long doubles--see
854 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
855 The gconvert_preference and gconvert_ld_preference variables
856 can be used to alter Configure's preferences, for doubles and
857 long doubles, respectively. If present, they contain a
858 space-separated list of one or more of the above function
859 names in the order they should be tried.
861 d_Gconvert may be set to override Configure with a platform-
862 specific function. If this function expects a double, a
863 different value may need to be set by the uselongdouble.cbu
864 call-back unit so that long doubles can be formatted without
867 d_getcwd (d_getcwd.U):
868 This variable conditionally defines the HAS_GETCWD symbol, which
869 indicates to the C program that the getcwd() routine is available
870 to get the current working directory.
872 d_getespwnam (d_getespwnam.U):
873 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
874 available to retrieve enchanced (shadow) password entries by name.
876 d_getfsstat (d_getfsstat.U):
877 This variable conditionally defines the HAS_GETFSSTAT symbol, which
878 indicates to the C program that the getfsstat() routine is available.
880 d_getgrent (d_getgrent.U):
881 This variable conditionally defines the HAS_GETGRENT symbol, which
882 indicates to the C program that the getgrent() routine is available
883 for sequential access of the group database.
885 d_getgrent_r (d_getgrent_r.U):
886 This variable conditionally defines the HAS_GETGRENT_R symbol,
887 which indicates to the C program that the getgrent_r()
888 routine is available.
890 d_getgrgid_r (d_getgrgid_r.U):
891 This variable conditionally defines the HAS_GETGRGID_R symbol,
892 which indicates to the C program that the getgrgid_r()
893 routine is available.
895 d_getgrnam_r (d_getgrnam_r.U):
896 This variable conditionally defines the HAS_GETGRNAM_R symbol,
897 which indicates to the C program that the getgrnam_r()
898 routine is available.
900 d_getgrps (d_getgrps.U):
901 This variable conditionally defines the HAS_GETGROUPS symbol, which
902 indicates to the C program that the getgroups() routine is available
903 to get the list of process groups.
905 d_gethbyaddr (d_gethbyad.U):
906 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
907 indicates to the C program that the gethostbyaddr() routine is available
908 to look up hosts by their IP addresses.
910 d_gethbyname (d_gethbynm.U):
911 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
912 indicates to the C program that the gethostbyname() routine is available
913 to look up host names in some data base or other.
915 d_gethent (d_gethent.U):
916 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
917 available to look up host names in some data base or another.
919 d_gethname (d_gethname.U):
920 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
921 indicates to the C program that the gethostname() routine may be
922 used to derive the host name.
924 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
925 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
926 which indicates to the C program that the gethostbyaddr_r()
927 routine is available.
929 d_gethostbyname_r (d_gethostbyname_r.U):
930 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
931 which indicates to the C program that the gethostbyname_r()
932 routine is available.
934 d_gethostent_r (d_gethostent_r.U):
935 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
936 which indicates to the C program that the gethostent_r()
937 routine is available.
939 d_gethostprotos (d_gethostprotos.U):
940 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
941 which indicates to the C program that <netdb.h> supplies
942 prototypes for the various gethost*() functions.
943 See also netdbtype.U for probing for various netdb types.
945 d_getitimer (d_getitimer.U):
946 This variable conditionally defines the HAS_GETITIMER symbol, which
947 indicates to the C program that the getitimer() routine is available.
949 d_getlogin (d_getlogin.U):
950 This variable conditionally defines the HAS_GETLOGIN symbol, which
951 indicates to the C program that the getlogin() routine is available
952 to get the login name.
954 d_getlogin_r (d_getlogin_r.U):
955 This variable conditionally defines the HAS_GETLOGIN_R symbol,
956 which indicates to the C program that the getlogin_r()
957 routine is available.
959 d_getmnt (d_getmnt.U):
960 This variable conditionally defines the HAS_GETMNT symbol, which
961 indicates to the C program that the getmnt() routine is available
962 to retrieve one or more mount info blocks by filename.
964 d_getmntent (d_getmntent.U):
965 This variable conditionally defines the HAS_GETMNTENT symbol, which
966 indicates to the C program that the getmntent() routine is available
967 to iterate through mounted files to get their mount info.
969 d_getnbyaddr (d_getnbyad.U):
970 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
971 indicates to the C program that the getnetbyaddr() routine is available
972 to look up networks by their IP addresses.
974 d_getnbyname (d_getnbynm.U):
975 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
976 indicates to the C program that the getnetbyname() routine is available
977 to look up networks by their names.
979 d_getnent (d_getnent.U):
980 This variable conditionally defines HAS_GETNETENT if getnetent() is
981 available to look up network names in some data base or another.
983 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
984 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
985 which indicates to the C program that the getnetbyaddr_r()
986 routine is available.
988 d_getnetbyname_r (d_getnetbyname_r.U):
989 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
990 which indicates to the C program that the getnetbyname_r()
991 routine is available.
993 d_getnetent_r (d_getnetent_r.U):
994 This variable conditionally defines the HAS_GETNETENT_R symbol,
995 which indicates to the C program that the getnetent_r()
996 routine is available.
998 d_getnetprotos (d_getnetprotos.U):
999 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1000 which indicates to the C program that <netdb.h> supplies
1001 prototypes for the various getnet*() functions.
1002 See also netdbtype.U for probing for various netdb types.
1004 d_getpagsz (d_getpagsz.U):
1005 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1006 is available to get the system page size.
1008 d_getpbyname (d_getprotby.U):
1009 This variable conditionally defines the HAS_GETPROTOBYNAME
1010 symbol, which indicates to the C program that the
1011 getprotobyname() routine is available to look up protocols
1014 d_getpbynumber (d_getprotby.U):
1015 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1016 symbol, which indicates to the C program that the
1017 getprotobynumber() routine is available to look up protocols
1020 d_getpent (d_getpent.U):
1021 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1022 available to look up protocols in some data base or another.
1024 d_getpgid (d_getpgid.U):
1025 This variable conditionally defines the HAS_GETPGID symbol, which
1026 indicates to the C program that the getpgid(pid) function
1027 is available to get the process group id.
1029 d_getpgrp (d_getpgrp.U):
1030 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1031 available to get the current process group.
1033 d_getpgrp2 (d_getpgrp2.U):
1034 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1035 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1036 is available to get the current process group.
1038 d_getppid (d_getppid.U):
1039 This variable conditionally defines the HAS_GETPPID symbol, which
1040 indicates to the C program that the getppid() routine is available
1041 to get the parent process ID.
1043 d_getprior (d_getprior.U):
1044 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1045 is available to get a process's priority.
1047 d_getprotobyname_r (d_getprotobyname_r.U):
1048 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1049 which indicates to the C program that the getprotobyname_r()
1050 routine is available.
1052 d_getprotobynumber_r (d_getprotobynumber_r.U):
1053 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1054 which indicates to the C program that the getprotobynumber_r()
1055 routine is available.
1057 d_getprotoent_r (d_getprotoent_r.U):
1058 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1059 which indicates to the C program that the getprotoent_r()
1060 routine is available.
1062 d_getprotoprotos (d_getprotoprotos.U):
1063 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1064 which indicates to the C program that <netdb.h> supplies
1065 prototypes for the various getproto*() functions.
1066 See also netdbtype.U for probing for various netdb types.
1068 d_getprpwnam (d_getprpwnam.U):
1069 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1070 available to retrieve protected (shadow) password entries by name.
1072 d_getpwent (d_getpwent.U):
1073 This variable conditionally defines the HAS_GETPWENT symbol, which
1074 indicates to the C program that the getpwent() routine is available
1075 for sequential access of the passwd database.
1077 d_getpwent_r (d_getpwent_r.U):
1078 This variable conditionally defines the HAS_GETPWENT_R symbol,
1079 which indicates to the C program that the getpwent_r()
1080 routine is available.
1082 d_getpwnam_r (d_getpwnam_r.U):
1083 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1084 which indicates to the C program that the getpwnam_r()
1085 routine is available.
1087 d_getpwuid_r (d_getpwuid_r.U):
1088 This variable conditionally defines the HAS_GETPWUID_R symbol,
1089 which indicates to the C program that the getpwuid_r()
1090 routine is available.
1092 d_getsbyname (d_getsrvby.U):
1093 This variable conditionally defines the HAS_GETSERVBYNAME
1094 symbol, which indicates to the C program that the
1095 getservbyname() routine is available to look up services
1098 d_getsbyport (d_getsrvby.U):
1099 This variable conditionally defines the HAS_GETSERVBYPORT
1100 symbol, which indicates to the C program that the
1101 getservbyport() routine is available to look up services
1104 d_getsent (d_getsent.U):
1105 This variable conditionally defines HAS_GETSERVENT if getservent() is
1106 available to look up network services in some data base or another.
1108 d_getservbyname_r (d_getservbyname_r.U):
1109 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1110 which indicates to the C program that the getservbyname_r()
1111 routine is available.
1113 d_getservbyport_r (d_getservbyport_r.U):
1114 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1115 which indicates to the C program that the getservbyport_r()
1116 routine is available.
1118 d_getservent_r (d_getservent_r.U):
1119 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1120 which indicates to the C program that the getservent_r()
1121 routine is available.
1123 d_getservprotos (d_getservprotos.U):
1124 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1125 which indicates to the C program that <netdb.h> supplies
1126 prototypes for the various getserv*() functions.
1127 See also netdbtype.U for probing for various netdb types.
1129 d_getspnam (d_getspnam.U):
1130 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1131 available to retrieve SysV shadow password entries by name.
1133 d_getspnam_r (d_getspnam_r.U):
1134 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1135 which indicates to the C program that the getspnam_r()
1136 routine is available.
1138 d_gettimeod (d_ftime.U):
1139 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1140 indicates that the gettimeofday() system call exists (to obtain a
1141 sub-second accuracy clock). You should probably include <sys/resource.h>.
1143 d_gmtime_r (d_gmtime_r.U):
1144 This variable conditionally defines the HAS_GMTIME_R symbol,
1145 which indicates to the C program that the gmtime_r()
1146 routine is available.
1148 d_gnulibc (d_gnulibc.U):
1149 Defined if we're dealing with the GNU C Library.
1151 d_grpasswd (i_grp.U):
1152 This variable conditionally defines GRPASSWD, which indicates
1153 that struct group in <grp.h> contains gr_passwd.
1155 d_hasmntopt (d_hasmntopt.U):
1156 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1157 indicates to the C program that the hasmntopt() routine is available
1158 to query the mount options of file systems.
1160 d_htonl (d_htonl.U):
1161 This variable conditionally defines HAS_HTONL if htonl() and its
1162 friends are available to do network order byte swapping.
1164 d_ilogbl (d_ilogbl.U):
1165 This variable conditionally defines the HAS_ILOGBL symbol, which
1166 indicates to the C program that the ilogbl() routine is available.
1167 If scalbnl is also present we can emulate frexpl.
1169 d_inc_version_list (inc_version_list.U):
1170 This variable conditionally defines PERL_INC_VERSION_LIST.
1171 It is set to undef when PERL_INC_VERSION_LIST is empty.
1173 d_index (d_strchr.U):
1174 This variable conditionally defines HAS_INDEX if index() and
1175 rindex() are available for string searching.
1177 d_inetaton (d_inetaton.U):
1178 This variable conditionally defines the HAS_INET_ATON symbol, which
1179 indicates to the C program that the inet_aton() function is available
1180 to parse IP address "dotted-quad" strings.
1182 d_int64_t (d_int64_t.U):
1183 This symbol will be defined if the C compiler supports int64_t.
1185 d_isascii (d_isascii.U):
1186 This variable conditionally defines the HAS_ISASCII constant,
1187 which indicates to the C program that isascii() is available.
1189 d_isfinite (d_isfinite.U):
1190 This variable conditionally defines the HAS_ISFINITE symbol, which
1191 indicates to the C program that the isfinite() routine is available.
1193 d_isinf (d_isinf.U):
1194 This variable conditionally defines the HAS_ISINF symbol, which
1195 indicates to the C program that the isinf() routine is available.
1197 d_isnan (d_isnan.U):
1198 This variable conditionally defines the HAS_ISNAN symbol, which
1199 indicates to the C program that the isnan() routine is available.
1201 d_isnanl (d_isnanl.U):
1202 This variable conditionally defines the HAS_ISNANL symbol, which
1203 indicates to the C program that the isnanl() routine is available.
1205 d_killpg (d_killpg.U):
1206 This variable conditionally defines the HAS_KILLPG symbol, which
1207 indicates to the C program that the killpg() routine is available
1208 to kill process groups.
1210 d_lchown (d_lchown.U):
1211 This variable conditionally defines the HAS_LCHOWN symbol, which
1212 indicates to the C program that the lchown() routine is available
1213 to operate on a symbolic link (instead of following the link).
1215 d_ldbl_dig (d_ldbl_dig.U):
1216 This variable conditionally defines d_ldbl_dig if this system's
1217 header files provide LDBL_DIG, which is the number of significant
1218 digits in a long double precision number.
1220 d_libm_lib_version (d_libm_lib_version.U):
1221 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1222 which indicates to the C program that math.h defines _LIB_VERSION
1223 being available in libm
1226 This variable conditionally defines HAS_LINK if link() is
1227 available to create hard links.
1229 d_localtime_r (d_localtime_r.U):
1230 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1231 which indicates to the C program that the localtime_r()
1232 routine is available.
1234 d_localtime_r_needs_tzset (d_localtime_r.U):
1235 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1236 symbol, which makes us call tzset before localtime_r()
1238 d_locconv (d_locconv.U):
1239 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1240 available for numeric and monetary formatting conventions.
1242 d_lockf (d_lockf.U):
1243 This variable conditionally defines HAS_LOCKF if lockf() is
1244 available to do file locking.
1246 d_longdbl (d_longdbl.U):
1247 This variable conditionally defines HAS_LONG_DOUBLE if
1248 the long double type is supported.
1250 d_longlong (d_longlong.U):
1251 This variable conditionally defines HAS_LONG_LONG if
1252 the long long type is supported.
1254 d_lseekproto (d_lseekproto.U):
1255 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1256 which indicates to the C program that the system provides
1257 a prototype for the lseek() function. Otherwise, it is
1258 up to the program to supply one.
1260 d_lstat (d_lstat.U):
1261 This variable conditionally defines HAS_LSTAT if lstat() is
1262 available to do file stats on symbolic links.
1264 d_madvise (d_madvise.U):
1265 This variable conditionally defines HAS_MADVISE if madvise() is
1266 available to map a file into memory.
1268 d_malloc_good_size (d_malloc_size.U):
1269 This symbol, if defined, indicates that the malloc_good_size
1270 routine is available for use.
1272 d_malloc_size (d_malloc_size.U):
1273 This symbol, if defined, indicates that the malloc_size
1274 routine is available for use.
1276 d_mblen (d_mblen.U):
1277 This variable conditionally defines the HAS_MBLEN symbol, which
1278 indicates to the C program that the mblen() routine is available
1279 to find the number of bytes in a multibye character.
1281 d_mbstowcs (d_mbstowcs.U):
1282 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1283 indicates to the C program that the mbstowcs() routine is available
1284 to convert a multibyte string into a wide character string.
1286 d_mbtowc (d_mbtowc.U):
1287 This variable conditionally defines the HAS_MBTOWC symbol, which
1288 indicates to the C program that the mbtowc() routine is available
1289 to convert multibyte to a wide character.
1291 d_memchr (d_memchr.U):
1292 This variable conditionally defines the HAS_MEMCHR symbol, which
1293 indicates to the C program that the memchr() routine is available
1294 to locate characters within a C string.
1296 d_memcmp (d_memcmp.U):
1297 This variable conditionally defines the HAS_MEMCMP symbol, which
1298 indicates to the C program that the memcmp() routine is available
1299 to compare blocks of memory.
1301 d_memcpy (d_memcpy.U):
1302 This variable conditionally defines the HAS_MEMCPY symbol, which
1303 indicates to the C program that the memcpy() routine is available
1304 to copy blocks of memory.
1306 d_memmove (d_memmove.U):
1307 This variable conditionally defines the HAS_MEMMOVE symbol, which
1308 indicates to the C program that the memmove() routine is available
1309 to copy potentatially overlapping blocks of memory.
1311 d_memset (d_memset.U):
1312 This variable conditionally defines the HAS_MEMSET symbol, which
1313 indicates to the C program that the memset() routine is available
1314 to set blocks of memory.
1316 d_mkdir (d_mkdir.U):
1317 This variable conditionally defines the HAS_MKDIR symbol, which
1318 indicates to the C program that the mkdir() routine is available
1319 to create directories..
1321 d_mkdtemp (d_mkdtemp.U):
1322 This variable conditionally defines the HAS_MKDTEMP symbol, which
1323 indicates to the C program that the mkdtemp() routine is available
1324 to exclusively create a uniquely named temporary directory.
1326 d_mkfifo (d_mkfifo.U):
1327 This variable conditionally defines the HAS_MKFIFO symbol, which
1328 indicates to the C program that the mkfifo() routine is available.
1330 d_mkstemp (d_mkstemp.U):
1331 This variable conditionally defines the HAS_MKSTEMP symbol, which
1332 indicates to the C program that the mkstemp() routine is available
1333 to exclusively create and open a uniquely named temporary file.
1335 d_mkstemps (d_mkstemps.U):
1336 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1337 indicates to the C program that the mkstemps() routine is available
1338 to exclusively create and open a uniquely named (with a suffix)
1341 d_mktime (d_mktime.U):
1342 This variable conditionally defines the HAS_MKTIME symbol, which
1343 indicates to the C program that the mktime() routine is available.
1346 This variable conditionally defines HAS_MMAP if mmap() is
1347 available to map a file into memory.
1349 d_modfl (d_modfl.U):
1350 This variable conditionally defines the HAS_MODFL symbol, which
1351 indicates to the C program that the modfl() routine is available.
1353 d_modfl_pow32_bug (d_modfl.U):
1354 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1355 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1356 For example from 4294967303.150000 one would get 4294967302.000000
1357 and 1.150000. The bug has been seen in certain versions of glibc,
1358 release 2.2.2 is known to be okay.
1360 d_modflproto (d_modfl.U):
1361 This symbol, if defined, indicates that the system provides
1362 a prototype for the modfl() function. Otherwise, it is up
1363 to the program to supply one. C99 says it should be
1364 long double modfl(long double, long double *);
1366 d_mprotect (d_mprotect.U):
1367 This variable conditionally defines HAS_MPROTECT if mprotect() is
1368 available to modify the access protection of a memory mapped file.
1371 This variable conditionally defines the HAS_MSG symbol, which
1372 indicates that the entire msg*(2) library is present.
1374 d_msg_ctrunc (d_socket.U):
1375 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1376 which indicates that the MSG_CTRUNC is available. #ifdef is
1377 not enough because it may be an enum, glibc has been known to do this.
1379 d_msg_dontroute (d_socket.U):
1380 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1381 which indicates that the MSG_DONTROUTE is available. #ifdef is
1382 not enough because it may be an enum, glibc has been known to do this.
1384 d_msg_oob (d_socket.U):
1385 This variable conditionally defines the HAS_MSG_OOB symbol,
1386 which indicates that the MSG_OOB is available. #ifdef is
1387 not enough because it may be an enum, glibc has been known to do this.
1389 d_msg_peek (d_socket.U):
1390 This variable conditionally defines the HAS_MSG_PEEK symbol,
1391 which indicates that the MSG_PEEK is available. #ifdef is
1392 not enough because it may be an enum, glibc has been known to do this.
1394 d_msg_proxy (d_socket.U):
1395 This variable conditionally defines the HAS_MSG_PROXY symbol,
1396 which indicates that the MSG_PROXY is available. #ifdef is
1397 not enough because it may be an enum, glibc has been known to do this.
1399 d_msgctl (d_msgctl.U):
1400 This variable conditionally defines the HAS_MSGCTL symbol, which
1401 indicates to the C program that the msgctl() routine is available.
1403 d_msgget (d_msgget.U):
1404 This variable conditionally defines the HAS_MSGGET symbol, which
1405 indicates to the C program that the msgget() routine is available.
1407 d_msghdr_s (d_msghdr_s.U):
1408 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1409 which indicates that the struct msghdr is supported.
1411 d_msgrcv (d_msgrcv.U):
1412 This variable conditionally defines the HAS_MSGRCV symbol, which
1413 indicates to the C program that the msgrcv() routine is available.
1415 d_msgsnd (d_msgsnd.U):
1416 This variable conditionally defines the HAS_MSGSND symbol, which
1417 indicates to the C program that the msgsnd() routine is available.
1419 d_msync (d_msync.U):
1420 This variable conditionally defines HAS_MSYNC if msync() is
1421 available to synchronize a mapped file.
1423 d_munmap (d_munmap.U):
1424 This variable conditionally defines HAS_MUNMAP if munmap() is
1425 available to unmap a region mapped by mmap().
1427 d_mymalloc (mallocsrc.U):
1428 This variable conditionally defines MYMALLOC in case other parts
1429 of the source want to take special action if MYMALLOC is used.
1430 This may include different sorts of profiling or error detection.
1433 This variable conditionally defines the HAS_NICE symbol, which
1434 indicates to the C program that the nice() routine is available.
1436 d_nl_langinfo (d_nl_langinfo.U):
1437 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1438 indicates to the C program that the nl_langinfo() routine is available.
1440 d_nv_preserves_uv (perlxv.U):
1441 This variable indicates whether a variable of type nvtype
1442 can preserve all the bits a variable of type uvtype.
1444 d_nv_zero_is_allbits_zero (perlxv.U):
1445 This variable indicates whether a variable of type nvtype
1446 stores 0.0 in memory as all bits zero.
1448 d_off64_t (d_off64_t.U):
1449 This symbol will be defined if the C compiler supports off64_t.
1451 d_old_pthread_create_joinable (d_pthrattrj.U):
1452 This variable conditionally defines pthread_create_joinable.
1453 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1455 d_oldpthreads (usethreads.U):
1456 This variable conditionally defines the OLD_PTHREADS_API symbol,
1457 and indicates that Perl should be built to use the old
1458 draft POSIX threads API. This is only potentially meaningful if
1461 d_oldsock (d_socket.U):
1462 This variable conditionally defines the OLDSOCKET symbol, which
1463 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1465 d_open3 (d_open3.U):
1466 This variable conditionally defines the HAS_OPEN3 manifest constant,
1467 which indicates to the C program that the 3 argument version of
1468 the open(2) function is available.
1470 d_pathconf (d_pathconf.U):
1471 This variable conditionally defines the HAS_PATHCONF symbol, which
1472 indicates to the C program that the pathconf() routine is available
1473 to determine file-system related limits and options associated
1474 with a given filename.
1476 d_pause (d_pause.U):
1477 This variable conditionally defines the HAS_PAUSE symbol, which
1478 indicates to the C program that the pause() routine is available
1479 to suspend a process until a signal is received.
1481 d_perl_otherlibdirs (otherlibdirs.U):
1482 This variable conditionally defines PERL_OTHERLIBDIRS, which
1483 contains a colon-separated set of paths for the perl binary to
1484 include in @INC. See also otherlibdirs.
1486 d_phostname (d_gethname.U):
1487 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1488 contains the shell command which, when fed to popen(), may be
1489 used to derive the host name.
1492 This variable conditionally defines the HAS_PIPE symbol, which
1493 indicates to the C program that the pipe() routine is available
1494 to create an inter-process channel.
1497 This variable conditionally defines the HAS_POLL symbol, which
1498 indicates to the C program that the poll() routine is available
1499 to poll active file descriptors.
1501 d_portable (d_portable.U):
1502 This variable conditionally defines the PORTABLE symbol, which
1503 indicates to the C program that it should not assume that it is
1504 running on the machine it was compiled on.
1506 d_PRId64 (quadfio.U):
1507 This variable conditionally defines the PERL_PRId64 symbol, which
1508 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1510 d_PRIeldbl (longdblfio.U):
1511 This variable conditionally defines the PERL_PRIfldbl symbol, which
1512 indiciates that stdio has a symbol to print long doubles.
1514 d_PRIEUldbl (longdblfio.U):
1515 This variable conditionally defines the PERL_PRIfldbl symbol, which
1516 indiciates that stdio has a symbol to print long doubles.
1517 The 'U' in the name is to separate this from d_PRIeldbl so that even
1518 case-blind systems can see the difference.
1520 d_PRIfldbl (longdblfio.U):
1521 This variable conditionally defines the PERL_PRIfldbl symbol, which
1522 indiciates that stdio has a symbol to print long doubles.
1524 d_PRIFUldbl (longdblfio.U):
1525 This variable conditionally defines the PERL_PRIfldbl symbol, which
1526 indiciates that stdio has a symbol to print long doubles.
1527 The 'U' in the name is to separate this from d_PRIfldbl so that even
1528 case-blind systems can see the difference.
1530 d_PRIgldbl (longdblfio.U):
1531 This variable conditionally defines the PERL_PRIfldbl symbol, which
1532 indiciates that stdio has a symbol to print long doubles.
1534 d_PRIGUldbl (longdblfio.U):
1535 This variable conditionally defines the PERL_PRIfldbl symbol, which
1536 indiciates that stdio has a symbol to print long doubles.
1537 The 'U' in the name is to separate this from d_PRIgldbl so that even
1538 case-blind systems can see the difference.
1540 d_PRIi64 (quadfio.U):
1541 This variable conditionally defines the PERL_PRIi64 symbol, which
1542 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1544 d_printf_format_null (d_attribut.U):
1545 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
1546 indicates the C compiler allows printf-like formats to be null.
1548 d_PRIo64 (quadfio.U):
1549 This variable conditionally defines the PERL_PRIo64 symbol, which
1550 indiciates that stdio has a symbol to print 64-bit octal numbers.
1552 d_PRIu64 (quadfio.U):
1553 This variable conditionally defines the PERL_PRIu64 symbol, which
1554 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1557 d_PRIx64 (quadfio.U):
1558 This variable conditionally defines the PERL_PRIx64 symbol, which
1559 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1561 d_PRIXU64 (quadfio.U):
1562 This variable conditionally defines the PERL_PRIXU64 symbol, which
1563 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1564 The 'U' in the name is to separate this from d_PRIx64 so that even
1565 case-blind systems can see the difference.
1567 d_procselfexe (d_procselfexe.U):
1568 Defined if $procselfexe is symlink to the absolute
1569 pathname of the executing program.
1571 d_pseudofork (d_vfork.U):
1572 This variable conditionally defines the HAS_PSEUDOFORK symbol,
1573 which indicates that an emulation of the fork routine is available.
1575 d_pthread_atfork (d_pthread_atfork.U):
1576 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1577 which indicates to the C program that the pthread_atfork()
1578 routine is available.
1580 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1581 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1582 pthread_attr_setscope() is available to set the contention scope
1583 attribute of a thread attribute object.
1585 d_pthread_yield (d_pthread_y.U):
1586 This variable conditionally defines the HAS_PTHREAD_YIELD
1587 symbol if the pthread_yield routine is available to yield
1588 the execution of the current thread.
1591 This variable conditionally defines PWAGE, which indicates
1592 that struct passwd contains pw_age.
1594 d_pwchange (i_pwd.U):
1595 This variable conditionally defines PWCHANGE, which indicates
1596 that struct passwd contains pw_change.
1598 d_pwclass (i_pwd.U):
1599 This variable conditionally defines PWCLASS, which indicates
1600 that struct passwd contains pw_class.
1602 d_pwcomment (i_pwd.U):
1603 This variable conditionally defines PWCOMMENT, which indicates
1604 that struct passwd contains pw_comment.
1606 d_pwexpire (i_pwd.U):
1607 This variable conditionally defines PWEXPIRE, which indicates
1608 that struct passwd contains pw_expire.
1610 d_pwgecos (i_pwd.U):
1611 This variable conditionally defines PWGECOS, which indicates
1612 that struct passwd contains pw_gecos.
1614 d_pwpasswd (i_pwd.U):
1615 This variable conditionally defines PWPASSWD, which indicates
1616 that struct passwd contains pw_passwd.
1618 d_pwquota (i_pwd.U):
1619 This variable conditionally defines PWQUOTA, which indicates
1620 that struct passwd contains pw_quota.
1622 d_qgcvt (d_qgcvt.U):
1623 This variable conditionally defines the HAS_QGCVT symbol, which
1624 indicates to the C program that the qgcvt() routine is available.
1626 d_quad (quadtype.U):
1627 This variable, if defined, tells that there's a 64-bit integer type,
1630 d_random_r (d_random_r.U):
1631 This variable conditionally defines the HAS_RANDOM_R symbol,
1632 which indicates to the C program that the random_r()
1633 routine is available.
1635 d_readdir (d_readdir.U):
1636 This variable conditionally defines HAS_READDIR if readdir() is
1637 available to read directory entries.
1639 d_readdir64_r (d_readdir64_r.U):
1640 This variable conditionally defines the HAS_READDIR64_R symbol,
1641 which indicates to the C program that the readdir64_r()
1642 routine is available.
1644 d_readdir_r (d_readdir_r.U):
1645 This variable conditionally defines the HAS_READDIR_R symbol,
1646 which indicates to the C program that the readdir_r()
1647 routine is available.
1649 d_readlink (d_readlink.U):
1650 This variable conditionally defines the HAS_READLINK symbol, which
1651 indicates to the C program that the readlink() routine is available
1652 to read the value of a symbolic link.
1654 d_readv (d_readv.U):
1655 This variable conditionally defines the HAS_READV symbol, which
1656 indicates to the C program that the readv() routine is available.
1658 d_recvmsg (d_recvmsg.U):
1659 This variable conditionally defines the HAS_RECVMSG symbol, which
1660 indicates to the C program that the recvmsg() routine is available.
1662 d_rename (d_rename.U):
1663 This variable conditionally defines the HAS_RENAME symbol, which
1664 indicates to the C program that the rename() routine is available
1667 d_rewinddir (d_readdir.U):
1668 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1671 d_rmdir (d_rmdir.U):
1672 This variable conditionally defines HAS_RMDIR if rmdir() is
1673 available to remove directories.
1675 d_safebcpy (d_safebcpy.U):
1676 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1677 the bcopy() routine can do overlapping copies. Normally, you
1678 should probably use memmove().
1680 d_safemcpy (d_safemcpy.U):
1681 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1682 the memcpy() routine can do overlapping copies.
1683 For overlapping copies, memmove() should be used, if available.
1685 d_sanemcmp (d_sanemcmp.U):
1686 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1687 the memcpy() routine is available and can be used to compare relative
1688 magnitudes of chars with their high bits set.
1690 d_sbrkproto (d_sbrkproto.U):
1691 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1692 which indicates to the C program that the system provides
1693 a prototype for the sbrk() function. Otherwise, it is
1694 up to the program to supply one.
1696 d_scalbnl (d_scalbnl.U):
1697 This variable conditionally defines the HAS_SCALBNL symbol, which
1698 indicates to the C program that the scalbnl() routine is available.
1699 If ilogbl is also present we can emulate frexpl.
1701 d_sched_yield (d_pthread_y.U):
1702 This variable conditionally defines the HAS_SCHED_YIELD
1703 symbol if the sched_yield routine is available to yield
1704 the execution of the current thread.
1706 d_scm_rights (d_socket.U):
1707 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1708 which indicates that the SCM_RIGHTS is available. #ifdef is
1709 not enough because it may be an enum, glibc has been known to do this.
1711 d_SCNfldbl (longdblfio.U):
1712 This variable conditionally defines the PERL_PRIfldbl symbol, which
1713 indiciates that stdio has a symbol to scan long doubles.
1715 d_seekdir (d_readdir.U):
1716 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1719 d_select (d_select.U):
1720 This variable conditionally defines HAS_SELECT if select() is
1721 available to select active file descriptors. A <sys/time.h>
1722 inclusion may be necessary for the timeout field.
1725 This variable conditionally defines the HAS_SEM symbol, which
1726 indicates that the entire sem*(2) library is present.
1728 d_semctl (d_semctl.U):
1729 This variable conditionally defines the HAS_SEMCTL symbol, which
1730 indicates to the C program that the semctl() routine is available.
1732 d_semctl_semid_ds (d_union_semun.U):
1733 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1734 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1736 d_semctl_semun (d_union_semun.U):
1737 This variable conditionally defines USE_SEMCTL_SEMUN, which
1738 indicates that union semun is to be used for semctl IPC_STAT.
1740 d_semget (d_semget.U):
1741 This variable conditionally defines the HAS_SEMGET symbol, which
1742 indicates to the C program that the semget() routine is available.
1744 d_semop (d_semop.U):
1745 This variable conditionally defines the HAS_SEMOP symbol, which
1746 indicates to the C program that the semop() routine is available.
1748 d_sendmsg (d_sendmsg.U):
1749 This variable conditionally defines the HAS_SENDMSG symbol, which
1750 indicates to the C program that the sendmsg() routine is available.
1752 d_setegid (d_setegid.U):
1753 This variable conditionally defines the HAS_SETEGID symbol, which
1754 indicates to the C program that the setegid() routine is available
1755 to change the effective gid of the current program.
1757 d_seteuid (d_seteuid.U):
1758 This variable conditionally defines the HAS_SETEUID symbol, which
1759 indicates to the C program that the seteuid() routine is available
1760 to change the effective uid of the current program.
1762 d_setgrent (d_setgrent.U):
1763 This variable conditionally defines the HAS_SETGRENT symbol, which
1764 indicates to the C program that the setgrent() routine is available
1765 for initializing sequential access to the group database.
1767 d_setgrent_r (d_setgrent_r.U):
1768 This variable conditionally defines the HAS_SETGRENT_R symbol,
1769 which indicates to the C program that the setgrent_r()
1770 routine is available.
1772 d_setgrps (d_setgrps.U):
1773 This variable conditionally defines the HAS_SETGROUPS symbol, which
1774 indicates to the C program that the setgroups() routine is available
1775 to set the list of process groups.
1777 d_sethent (d_sethent.U):
1778 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1781 d_sethostent_r (d_sethostent_r.U):
1782 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1783 which indicates to the C program that the sethostent_r()
1784 routine is available.
1786 d_setitimer (d_setitimer.U):
1787 This variable conditionally defines the HAS_SETITIMER symbol, which
1788 indicates to the C program that the setitimer() routine is available.
1790 d_setlinebuf (d_setlnbuf.U):
1791 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1792 indicates to the C program that the setlinebuf() routine is available
1793 to change stderr or stdout from block-buffered or unbuffered to a
1796 d_setlocale (d_setlocale.U):
1797 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1798 available to handle locale-specific ctype implementations.
1800 d_setlocale_r (d_setlocale_r.U):
1801 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1802 which indicates to the C program that the setlocale_r()
1803 routine is available.
1805 d_setnent (d_setnent.U):
1806 This variable conditionally defines HAS_SETNETENT if setnetent() is
1809 d_setnetent_r (d_setnetent_r.U):
1810 This variable conditionally defines the HAS_SETNETENT_R symbol,
1811 which indicates to the C program that the setnetent_r()
1812 routine is available.
1814 d_setpent (d_setpent.U):
1815 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1818 d_setpgid (d_setpgid.U):
1819 This variable conditionally defines the HAS_SETPGID symbol if the
1820 setpgid(pid, gpid) function is available to set process group ID.
1822 d_setpgrp (d_setpgrp.U):
1823 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1824 available to set the current process group.
1826 d_setpgrp2 (d_setpgrp2.U):
1827 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1828 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1829 is available to set the current process group.
1831 d_setprior (d_setprior.U):
1832 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1833 is available to set a process's priority.
1835 d_setproctitle (d_setproctitle.U):
1836 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1837 which indicates to the C program that the setproctitle() routine
1840 d_setprotoent_r (d_setprotoent_r.U):
1841 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1842 which indicates to the C program that the setprotoent_r()
1843 routine is available.
1845 d_setpwent (d_setpwent.U):
1846 This variable conditionally defines the HAS_SETPWENT symbol, which
1847 indicates to the C program that the setpwent() routine is available
1848 for initializing sequential access to the passwd database.
1850 d_setpwent_r (d_setpwent_r.U):
1851 This variable conditionally defines the HAS_SETPWENT_R symbol,
1852 which indicates to the C program that the setpwent_r()
1853 routine is available.
1855 d_setregid (d_setregid.U):
1856 This variable conditionally defines HAS_SETREGID if setregid() is
1857 available to change the real and effective gid of the current
1860 d_setresgid (d_setregid.U):
1861 This variable conditionally defines HAS_SETRESGID if setresgid() is
1862 available to change the real, effective and saved gid of the current
1865 d_setresuid (d_setreuid.U):
1866 This variable conditionally defines HAS_SETREUID if setresuid() is
1867 available to change the real, effective and saved uid of the current
1870 d_setreuid (d_setreuid.U):
1871 This variable conditionally defines HAS_SETREUID if setreuid() is
1872 available to change the real and effective uid of the current
1875 d_setrgid (d_setrgid.U):
1876 This variable conditionally defines the HAS_SETRGID symbol, which
1877 indicates to the C program that the setrgid() routine is available
1878 to change the real gid of the current program.
1880 d_setruid (d_setruid.U):
1881 This variable conditionally defines the HAS_SETRUID symbol, which
1882 indicates to the C program that the setruid() routine is available
1883 to change the real uid of the current program.
1885 d_setsent (d_setsent.U):
1886 This variable conditionally defines HAS_SETSERVENT if setservent() is
1889 d_setservent_r (d_setservent_r.U):
1890 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1891 which indicates to the C program that the setservent_r()
1892 routine is available.
1894 d_setsid (d_setsid.U):
1895 This variable conditionally defines HAS_SETSID if setsid() is
1896 available to set the process group ID.
1898 d_setvbuf (d_setvbuf.U):
1899 This variable conditionally defines the HAS_SETVBUF symbol, which
1900 indicates to the C program that the setvbuf() routine is available
1901 to change buffering on an open stdio stream.
1904 This variable conditionally defines the USE_SFIO symbol,
1905 and indicates whether sfio is available (and should be used).
1908 This variable conditionally defines the HAS_SHM symbol, which
1909 indicates that the entire shm*(2) library is present.
1911 d_shmat (d_shmat.U):
1912 This variable conditionally defines the HAS_SHMAT symbol, which
1913 indicates to the C program that the shmat() routine is available.
1915 d_shmatprototype (d_shmat.U):
1916 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1917 symbol, which indicates that sys/shm.h has a prototype for
1920 d_shmctl (d_shmctl.U):
1921 This variable conditionally defines the HAS_SHMCTL symbol, which
1922 indicates to the C program that the shmctl() routine is available.
1924 d_shmdt (d_shmdt.U):
1925 This variable conditionally defines the HAS_SHMDT symbol, which
1926 indicates to the C program that the shmdt() routine is available.
1928 d_shmget (d_shmget.U):
1929 This variable conditionally defines the HAS_SHMGET symbol, which
1930 indicates to the C program that the shmget() routine is available.
1932 d_sigaction (d_sigaction.U):
1933 This variable conditionally defines the HAS_SIGACTION symbol, which
1934 indicates that the Vr4 sigaction() routine is available.
1936 d_signbit (d_signbit.U):
1937 This variable conditionally defines the HAS_SIGNBIT symbol, which
1938 indicates to the C program that the signbit() routine is available
1939 and safe to use with perl's intern NV type.
1941 d_sigprocmask (d_sigprocmask.U):
1942 This variable conditionally defines HAS_SIGPROCMASK
1943 if sigprocmask() is available to examine or change the signal mask
1944 of the calling process.
1946 d_sigsetjmp (d_sigsetjmp.U):
1947 This variable conditionally defines the HAS_SIGSETJMP symbol,
1948 which indicates that the sigsetjmp() routine is available to
1949 call setjmp() and optionally save the process's signal mask.
1951 d_sitearch (sitearch.U):
1952 This variable conditionally defines SITEARCH to hold the pathname
1953 of architecture-dependent library files for $package. If
1954 $sitearch is the same as $archlib, then this is set to undef.
1956 d_snprintf (d_snprintf.U):
1957 This variable conditionally defines the HAS_SNPRINTF symbol, which
1958 indicates to the C program that the snprintf () library function
1961 d_sockatmark (d_sockatmark.U):
1962 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1963 indicates to the C program that the sockatmark() routine is available.
1965 d_sockatmarkproto (d_sockatmarkproto.U):
1966 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1967 which indicates to the C program that the system provides
1968 a prototype for the sockatmark() function. Otherwise, it is
1969 up to the program to supply one.
1971 d_socket (d_socket.U):
1972 This variable conditionally defines HAS_SOCKET, which indicates
1973 that the BSD socket interface is supported.
1975 d_socklen_t (d_socklen_t.U):
1976 This symbol will be defined if the C compiler supports socklen_t.
1978 d_sockpair (d_socket.U):
1979 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1980 indicates that the BSD socketpair() is supported.
1982 d_socks5_init (d_socks5_init.U):
1983 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1984 indicates to the C program that the socks5_init() routine is available.
1986 d_sprintf_returns_strlen (d_sprintf_len.U):
1987 This variable defines whether sprintf returns the length of the string
1988 (as per the ANSI spec). Some C libraries retain compatibility with
1989 pre-ANSI C and return a pointer to the passed in buffer; for these
1990 this variable will be undef.
1992 d_sqrtl (d_sqrtl.U):
1993 This variable conditionally defines the HAS_SQRTL symbol, which
1994 indicates to the C program that the sqrtl() routine is available.
1996 d_srand48_r (d_srand48_r.U):
1997 This variable conditionally defines the HAS_SRAND48_R symbol,
1998 which indicates to the C program that the srand48_r()
1999 routine is available.
2001 d_srandom_r (d_srandom_r.U):
2002 This variable conditionally defines the HAS_SRANDOM_R symbol,
2003 which indicates to the C program that the srandom_r()
2004 routine is available.
2006 d_sresgproto (d_sresgproto.U):
2007 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
2008 which indicates to the C program that the system provides
2009 a prototype for the setresgid() function. Otherwise, it is
2010 up to the program to supply one.
2012 d_sresuproto (d_sresuproto.U):
2013 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2014 which indicates to the C program that the system provides
2015 a prototype for the setresuid() function. Otherwise, it is
2016 up to the program to supply one.
2018 d_statblks (d_statblks.U):
2019 This variable conditionally defines USE_STAT_BLOCKS
2020 if this system has a stat structure declaring
2021 st_blksize and st_blocks.
2023 d_statfs_f_flags (d_statfs_f_flags.U):
2024 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2025 symbol, which indicates to struct statfs from has f_flags member.
2026 This kind of struct statfs is coming from sys/mount.h (BSD),
2027 not from sys/statfs.h (SYSV).
2029 d_statfs_s (d_statfs_s.U):
2030 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2031 which indicates that the struct statfs is supported.
2033 d_statvfs (d_statvfs.U):
2034 This variable conditionally defines the HAS_STATVFS symbol, which
2035 indicates to the C program that the statvfs() routine is available.
2037 d_stdio_cnt_lval (d_stdstdio.U):
2038 This variable conditionally defines STDIO_CNT_LVALUE if the
2039 FILE_cnt macro can be used as an lvalue.
2041 d_stdio_ptr_lval (d_stdstdio.U):
2042 This variable conditionally defines STDIO_PTR_LVALUE if the
2043 FILE_ptr macro can be used as an lvalue.
2045 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2046 This symbol is defined if using the FILE_ptr macro as an lvalue
2047 to increase the pointer by n leaves File_cnt(fp) unchanged.
2049 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2050 This symbol is defined if using the FILE_ptr macro as an lvalue
2051 to increase the pointer by n has the side effect of decreasing the
2052 value of File_cnt(fp) by n.
2054 d_stdio_stream_array (stdio_streams.U):
2055 This variable tells whether there is an array holding
2058 d_stdiobase (d_stdstdio.U):
2059 This variable conditionally defines USE_STDIO_BASE if this system
2060 has a FILE structure declaring a usable _base field (or equivalent)
2063 d_stdstdio (d_stdstdio.U):
2064 This variable conditionally defines USE_STDIO_PTR if this system
2065 has a FILE structure declaring usable _ptr and _cnt fields (or
2066 equivalent) in stdio.h.
2068 d_strchr (d_strchr.U):
2069 This variable conditionally defines HAS_STRCHR if strchr() and
2070 strrchr() are available for string searching.
2072 d_strcoll (d_strcoll.U):
2073 This variable conditionally defines HAS_STRCOLL if strcoll() is
2074 available to compare strings using collating information.
2076 d_strctcpy (d_strctcpy.U):
2077 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2078 indicates to the C program that this C compiler knows how to copy
2081 d_strerrm (d_strerror.U):
2082 This variable holds what Strerrr is defined as to translate an error
2083 code condition into an error message string. It could be 'strerror'
2084 or a more complex macro emulating strrror with sys_errlist[], or the
2085 "unknown" string when both strerror and sys_errlist are missing.
2087 d_strerror (d_strerror.U):
2088 This variable conditionally defines HAS_STRERROR if strerror() is
2089 available to translate error numbers to strings.
2091 d_strerror_r (d_strerror_r.U):
2092 This variable conditionally defines the HAS_STRERROR_R symbol,
2093 which indicates to the C program that the strerror_r()
2094 routine is available.
2096 d_strftime (d_strftime.U):
2097 This variable conditionally defines the HAS_STRFTIME symbol, which
2098 indicates to the C program that the strftime() routine is available.
2100 d_strlcat (d_strlcat.U):
2101 This variable conditionally defines the HAS_STRLCAT symbol, which
2102 indicates to the C program that the strlcat () routine is available.
2104 d_strlcpy (d_strlcpy.U):
2105 This variable conditionally defines the HAS_STRLCPY symbol, which
2106 indicates to the C program that the strlcpy () routine is available.
2108 d_strtod (d_strtod.U):
2109 This variable conditionally defines the HAS_STRTOD symbol, which
2110 indicates to the C program that the strtod() routine is available
2111 to provide better numeric string conversion than atof().
2113 d_strtol (d_strtol.U):
2114 This variable conditionally defines the HAS_STRTOL symbol, which
2115 indicates to the C program that the strtol() routine is available
2116 to provide better numeric string conversion than atoi() and friends.
2118 d_strtold (d_strtold.U):
2119 This variable conditionally defines the HAS_STRTOLD symbol, which
2120 indicates to the C program that the strtold() routine is available.
2122 d_strtoll (d_strtoll.U):
2123 This variable conditionally defines the HAS_STRTOLL symbol, which
2124 indicates to the C program that the strtoll() routine is available.
2126 d_strtoq (d_strtoq.U):
2127 This variable conditionally defines the HAS_STRTOQ symbol, which
2128 indicates to the C program that the strtoq() routine is available.
2130 d_strtoul (d_strtoul.U):
2131 This variable conditionally defines the HAS_STRTOUL symbol, which
2132 indicates to the C program that the strtoul() routine is available
2133 to provide conversion of strings to unsigned long.
2135 d_strtoull (d_strtoull.U):
2136 This variable conditionally defines the HAS_STRTOULL symbol, which
2137 indicates to the C program that the strtoull() routine is available.
2139 d_strtouq (d_strtouq.U):
2140 This variable conditionally defines the HAS_STRTOUQ symbol, which
2141 indicates to the C program that the strtouq() routine is available.
2143 d_strxfrm (d_strxfrm.U):
2144 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2145 available to transform strings.
2147 d_suidsafe (d_dosuid.U):
2148 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2149 if setuid scripts can be secure. This test looks in /dev/fd/.
2151 d_symlink (d_symlink.U):
2152 This variable conditionally defines the HAS_SYMLINK symbol, which
2153 indicates to the C program that the symlink() routine is available
2154 to create symbolic links.
2156 d_syscall (d_syscall.U):
2157 This variable conditionally defines HAS_SYSCALL if syscall() is
2158 available call arbitrary system calls.
2160 d_syscallproto (d_syscallproto.U):
2161 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2162 which indicates to the C program that the system provides
2163 a prototype for the syscall() function. Otherwise, it is
2164 up to the program to supply one.
2166 d_sysconf (d_sysconf.U):
2167 This variable conditionally defines the HAS_SYSCONF symbol, which
2168 indicates to the C program that the sysconf() routine is available
2169 to determine system related limits and options.
2171 d_sysernlst (d_strerror.U):
2172 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2173 is available to translate error numbers to the symbolic name.
2175 d_syserrlst (d_strerror.U):
2176 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2177 available to translate error numbers to strings.
2179 d_system (d_system.U):
2180 This variable conditionally defines HAS_SYSTEM if system() is
2181 available to issue a shell command.
2183 d_tcgetpgrp (d_tcgtpgrp.U):
2184 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2185 indicates to the C program that the tcgetpgrp() routine is available.
2186 to get foreground process group ID.
2188 d_tcsetpgrp (d_tcstpgrp.U):
2189 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2190 indicates to the C program that the tcsetpgrp() routine is available
2191 to set foreground process group ID.
2193 d_telldir (d_readdir.U):
2194 This variable conditionally defines HAS_TELLDIR if telldir() is
2197 d_telldirproto (d_telldirproto.U):
2198 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2199 which indicates to the C program that the system provides
2200 a prototype for the telldir() function. Otherwise, it is
2201 up to the program to supply one.
2204 This variable conditionally defines the HAS_TIME symbol, which indicates
2205 that the time() routine exists. The time() routine is normaly
2206 provided on UNIX systems.
2208 d_times (d_times.U):
2209 This variable conditionally defines the HAS_TIMES symbol, which indicates
2210 that the times() routine exists. The times() routine is normaly
2211 provided on UNIX systems. You may have to include <sys/times.h>.
2213 d_tm_tm_gmtoff (i_time.U):
2214 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2215 indicates to the C program that the struct tm has the tm_gmtoff field.
2217 d_tm_tm_zone (i_time.U):
2218 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2219 indicates to the C program that the struct tm has the tm_zone field.
2221 d_tmpnam_r (d_tmpnam_r.U):
2222 This variable conditionally defines the HAS_TMPNAM_R symbol,
2223 which indicates to the C program that the tmpnam_r()
2224 routine is available.
2226 d_truncate (d_truncate.U):
2227 This variable conditionally defines HAS_TRUNCATE if truncate() is
2228 available to truncate files.
2230 d_ttyname_r (d_ttyname_r.U):
2231 This variable conditionally defines the HAS_TTYNAME_R symbol,
2232 which indicates to the C program that the ttyname_r()
2233 routine is available.
2235 d_tzname (d_tzname.U):
2236 This variable conditionally defines HAS_TZNAME if tzname[] is
2237 available to access timezone names.
2239 d_u32align (d_u32align.U):
2240 This variable tells whether you must access character data
2241 through U32-aligned pointers.
2243 d_ualarm (d_ualarm.U):
2244 This variable conditionally defines the HAS_UALARM symbol, which
2245 indicates to the C program that the ualarm() routine is available.
2247 d_umask (d_umask.U):
2248 This variable conditionally defines the HAS_UMASK symbol, which
2249 indicates to the C program that the umask() routine is available.
2250 to set and get the value of the file creation mask.
2252 d_uname (d_gethname.U):
2253 This variable conditionally defines the HAS_UNAME symbol, which
2254 indicates to the C program that the uname() routine may be
2255 used to derive the host name.
2257 d_union_semun (d_union_semun.U):
2258 This variable conditionally defines HAS_UNION_SEMUN if the
2259 union semun is defined by including <sys/sem.h>.
2261 d_unordered (d_unordered.U):
2262 This variable conditionally defines the HAS_UNORDERED symbol, which
2263 indicates to the C program that the unordered() routine is available.
2265 d_unsetenv (d_unsetenv.U):
2266 This variable conditionally defines the HAS_UNSETENV symbol, which
2267 indicates to the C program that the unsetenv () routine is available.
2269 d_usleep (d_usleep.U):
2270 This variable conditionally defines HAS_USLEEP if usleep() is
2271 available to do high granularity sleeps.
2273 d_usleepproto (d_usleepproto.U):
2274 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2275 which indicates to the C program that the system provides
2276 a prototype for the usleep() function. Otherwise, it is
2277 up to the program to supply one.
2279 d_ustat (d_ustat.U):
2280 This variable conditionally defines HAS_USTAT if ustat() is
2281 available to query file system statistics by dev_t.
2283 d_vendorarch (vendorarch.U):
2284 This variable conditionally defined PERL_VENDORARCH.
2286 d_vendorbin (vendorbin.U):
2287 This variable conditionally defines PERL_VENDORBIN.
2289 d_vendorlib (vendorlib.U):
2290 This variable conditionally defines PERL_VENDORLIB.
2292 d_vendorscript (vendorscript.U):
2293 This variable conditionally defines PERL_VENDORSCRIPT.
2295 d_vfork (d_vfork.U):
2296 This variable conditionally defines the HAS_VFORK symbol, which
2297 indicates the vfork() routine is available.
2299 d_void_closedir (d_closedir.U):
2300 This variable conditionally defines VOID_CLOSEDIR if closedir()
2301 does not return a value.
2303 d_voidsig (d_voidsig.U):
2304 This variable conditionally defines VOIDSIG if this system
2305 declares "void (*signal(...))()" in signal.h. The old way was to
2306 declare it as "int (*signal(...))()".
2308 d_voidtty (i_sysioctl.U):
2309 This variable conditionally defines USE_IOCNOTTY to indicate that the
2310 ioctl() call with TIOCNOTTY should be used to void tty association.
2311 Otherwise (on USG probably), it is enough to close the standard file
2312 decriptors and do a setpgrp().
2314 d_volatile (d_volatile.U):
2315 This variable conditionally defines the HASVOLATILE symbol, which
2316 indicates to the C program that this C compiler knows about the
2317 volatile declaration.
2319 d_vprintf (d_vprintf.U):
2320 This variable conditionally defines the HAS_VPRINTF symbol, which
2321 indicates to the C program that the vprintf() routine is available
2322 to printf with a pointer to an argument list.
2324 d_vsnprintf (d_snprintf.U):
2325 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2326 indicates to the C program that the vsnprintf () library function
2329 d_wait4 (d_wait4.U):
2330 This variable conditionally defines the HAS_WAIT4 symbol, which
2331 indicates the wait4() routine is available.
2333 d_waitpid (d_waitpid.U):
2334 This variable conditionally defines HAS_WAITPID if waitpid() is
2335 available to wait for child process.
2337 d_wcstombs (d_wcstombs.U):
2338 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2339 indicates to the C program that the wcstombs() routine is available
2340 to convert wide character strings to multibyte strings.
2342 d_wctomb (d_wctomb.U):
2343 This variable conditionally defines the HAS_WCTOMB symbol, which
2344 indicates to the C program that the wctomb() routine is available
2345 to convert a wide character to a multibyte.
2347 d_writev (d_writev.U):
2348 This variable conditionally defines the HAS_WRITEV symbol, which
2349 indicates to the C program that the writev() routine is available.
2352 This variable conditionally defines the symbol XENIX, which alerts
2353 the C program that it runs under Xenix.
2356 This variable is used internally by Configure to determine the
2357 full pathname (if any) of the date program. After Configure runs,
2358 the value is reset to a plain "date" and is not useful.
2360 db_hashtype (i_db.U):
2361 This variable contains the type of the hash structure element
2362 in the <db.h> header file. In older versions of DB, it was
2363 int, while in newer ones it is u_int32_t.
2365 db_prefixtype (i_db.U):
2366 This variable contains the type of the prefix structure element
2367 in the <db.h> header file. In older versions of DB, it was
2368 int, while in newer ones it is size_t.
2370 db_version_major (i_db.U):
2371 This variable contains the major version number of
2372 Berkeley DB found in the <db.h> header file.
2374 db_version_minor (i_db.U):
2375 This variable contains the minor version number of
2376 Berkeley DB found in the <db.h> header file.
2377 For DB version 1 this is always 0.
2379 db_version_patch (i_db.U):
2380 This variable contains the patch version number of
2381 Berkeley DB found in the <db.h> header file.
2382 For DB version 1 this is always 0.
2384 defvoidused (voidflags.U):
2385 This variable contains the default value of the VOIDUSED symbol (15).
2387 direntrytype (i_dirent.U):
2388 This symbol is set to 'struct direct' or 'struct dirent' depending on
2389 whether dirent is available or not. You should use this pseudo type to
2390 portably declare your directory entries.
2393 This variable contains the extension that is to be used for the
2394 dynamically loaded modules that perl generaties.
2397 This variable contains the name of the dynamic loading file that
2398 will be used with the package.
2400 doublesize (doublesize.U):
2401 This variable contains the value of the DOUBLESIZE symbol, which
2402 indicates to the C program how many bytes there are in a double.
2404 drand01 (randfunc.U):
2405 Indicates the macro to be used to generate normalized
2406 random numbers. Uses randfunc, often divided by
2407 (double) (((unsigned long) 1 << randbits)) in order to
2408 normalize the result.
2409 In C programs, the macro 'Drand01' is mapped to drand01.
2411 drand48_r_proto (d_drand48_r.U):
2412 This variable encodes the prototype of drand48_r.
2413 It is zero if d_drand48_r is undef, and one of the
2414 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2417 dynamic_ext (Extensions.U):
2418 This variable holds a list of XS extension files we want to
2419 link dynamically into the package. It is used by Makefile.
2422 This variable holds the location of the dtrace executable.
2424 eagain (nblock_io.U):
2425 This variable bears the symbolic errno code set by read() when no
2426 data is present on the file and non-blocking I/O was enabled (otherwise,
2427 read() blocks naturally).
2430 This variable conditionally defines EBCDIC if this
2431 system uses EBCDIC encoding. Among other things, this
2432 means that the character ranges are not contiguous.
2436 This variable is used internally by Configure to determine the
2437 full pathname (if any) of the echo program. After Configure runs,
2438 the value is reset to a plain "echo" and is not useful.
2441 This variable is used internally by Configure to determine the
2442 full pathname (if any) of the egrep program. After Configure runs,
2443 the value is reset to a plain "egrep" and is not useful.
2446 This variable is defined but not used by Configure.
2447 The value is a plain '' and is not useful.
2449 endgrent_r_proto (d_endgrent_r.U):
2450 This variable encodes the prototype of endgrent_r.
2451 It is zero if d_endgrent_r is undef, and one of the
2452 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2455 endhostent_r_proto (d_endhostent_r.U):
2456 This variable encodes the prototype of endhostent_r.
2457 It is zero if d_endhostent_r is undef, and one of the
2458 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2461 endnetent_r_proto (d_endnetent_r.U):
2462 This variable encodes the prototype of endnetent_r.
2463 It is zero if d_endnetent_r is undef, and one of the
2464 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2467 endprotoent_r_proto (d_endprotoent_r.U):
2468 This variable encodes the prototype of endprotoent_r.
2469 It is zero if d_endprotoent_r is undef, and one of the
2470 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2473 endpwent_r_proto (d_endpwent_r.U):
2474 This variable encodes the prototype of endpwent_r.
2475 It is zero if d_endpwent_r is undef, and one of the
2476 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2479 endservent_r_proto (d_endservent_r.U):
2480 This variable encodes the prototype of endservent_r.
2481 It is zero if d_endservent_r is undef, and one of the
2482 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2486 When running under Eunice this variable contains a command which will
2487 convert a shell script to the proper form of text file for it to be
2488 executable by the shell. On other systems it is a no-op.
2491 This is an old synonym for _exe.
2494 This variable is used internally by Configure to determine the
2495 full pathname (if any) of the expr program. After Configure runs,
2496 the value is reset to a plain "expr" and is not useful.
2498 extensions (Extensions.U):
2499 This variable holds a list of all extension files (both XS and
2500 non-xs linked into the package. It is propagated to Config.pm
2501 and is typically used to test whether a particular extesion
2505 This variable holds a list of extra modules to install.
2507 fflushall (fflushall.U):
2508 This symbol, if defined, tells that to flush
2509 all pending stdio output one must loop through all
2510 the stdio file handles stored in an array and fflush them.
2511 Note that if fflushNULL is defined, fflushall will not
2512 even be probed for and will be left undefined.
2514 fflushNULL (fflushall.U):
2515 This symbol, if defined, tells that fflush(NULL) does flush
2516 all pending stdio output.
2519 This variable is defined but not used by Configure.
2520 The value is a plain '' and is not useful.
2522 firstmakefile (Unix.U):
2523 This variable defines the first file searched by make. On unix,
2524 it is makefile (then Makefile). On case-insensitive systems,
2525 it might be something else. This is only used to deal with
2526 convoluted make depend tricks.
2529 This variable is defined but not used by Configure.
2530 The value is a plain '' and is not useful.
2532 fpossize (fpossize.U):
2533 This variable contains the size of a fpostype in bytes.
2535 fpostype (fpostype.U):
2536 This variable defines Fpos_t to be something like fpos_t, long,
2537 uint, or whatever type is used to declare file positions in libc.
2539 freetype (mallocsrc.U):
2540 This variable contains the return type of free(). It is usually
2541 void, but occasionally int.
2544 This variable contains the command used by Configure
2545 to copy files from the target host. Useful and available
2546 only during Perl build.
2547 The string ':' if not cross-compiling.
2550 This variable contains the full pathname to 'ar', whether or
2551 not the user has specified 'portability'. This is only used
2555 This variable contains the full pathname to 'csh', whether or
2556 not the user has specified 'portability'. This is only used
2557 in the compiled C program, and we assume that all systems which
2558 can share this executable will have the same full pathname to
2561 full_sed (Loc_sed.U):
2562 This variable contains the full pathname to 'sed', whether or
2563 not the user has specified 'portability'. This is only used
2564 in the compiled C program, and we assume that all systems which
2565 can share this executable will have the same full pathname to
2568 gccansipedantic (gccvers.U):
2569 If GNU cc (gcc) is used, this variable will enable (if set) the
2570 -ansi and -pedantic ccflags for building core files (through
2571 cflags script). (See Porting/pumpkin.pod for full description).
2573 gccosandvers (gccvers.U):
2574 If GNU cc (gcc) is used, this variable holds the operating system
2575 and version used to compile gcc. It is set to '' if not gcc,
2576 or if nothing useful can be parsed as the os version.
2578 gccversion (gccvers.U):
2579 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2580 indicate whether the compiler is version 1 or 2. This is used in
2581 setting some of the default cflags. It is set to '' if not gcc.
2583 getgrent_r_proto (d_getgrent_r.U):
2584 This variable encodes the prototype of getgrent_r.
2585 It is zero if d_getgrent_r is undef, and one of the
2586 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2589 getgrgid_r_proto (d_getgrgid_r.U):
2590 This variable encodes the prototype of getgrgid_r.
2591 It is zero if d_getgrgid_r is undef, and one of the
2592 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2595 getgrnam_r_proto (d_getgrnam_r.U):
2596 This variable encodes the prototype of getgrnam_r.
2597 It is zero if d_getgrnam_r is undef, and one of the
2598 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2601 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2602 This variable encodes the prototype of gethostbyaddr_r.
2603 It is zero if d_gethostbyaddr_r is undef, and one of the
2604 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2607 gethostbyname_r_proto (d_gethostbyname_r.U):
2608 This variable encodes the prototype of gethostbyname_r.
2609 It is zero if d_gethostbyname_r is undef, and one of the
2610 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2613 gethostent_r_proto (d_gethostent_r.U):
2614 This variable encodes the prototype of gethostent_r.
2615 It is zero if d_gethostent_r is undef, and one of the
2616 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2619 getlogin_r_proto (d_getlogin_r.U):
2620 This variable encodes the prototype of getlogin_r.
2621 It is zero if d_getlogin_r is undef, and one of the
2622 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2625 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2626 This variable encodes the prototype of getnetbyaddr_r.
2627 It is zero if d_getnetbyaddr_r is undef, and one of the
2628 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2631 getnetbyname_r_proto (d_getnetbyname_r.U):
2632 This variable encodes the prototype of getnetbyname_r.
2633 It is zero if d_getnetbyname_r is undef, and one of the
2634 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2637 getnetent_r_proto (d_getnetent_r.U):
2638 This variable encodes the prototype of getnetent_r.
2639 It is zero if d_getnetent_r is undef, and one of the
2640 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2643 getprotobyname_r_proto (d_getprotobyname_r.U):
2644 This variable encodes the prototype of getprotobyname_r.
2645 It is zero if d_getprotobyname_r is undef, and one of the
2646 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2649 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2650 This variable encodes the prototype of getprotobynumber_r.
2651 It is zero if d_getprotobynumber_r is undef, and one of the
2652 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2655 getprotoent_r_proto (d_getprotoent_r.U):
2656 This variable encodes the prototype of getprotoent_r.
2657 It is zero if d_getprotoent_r is undef, and one of the
2658 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2661 getpwent_r_proto (d_getpwent_r.U):
2662 This variable encodes the prototype of getpwent_r.
2663 It is zero if d_getpwent_r is undef, and one of the
2664 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2667 getpwnam_r_proto (d_getpwnam_r.U):
2668 This variable encodes the prototype of getpwnam_r.
2669 It is zero if d_getpwnam_r is undef, and one of the
2670 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2673 getpwuid_r_proto (d_getpwuid_r.U):
2674 This variable encodes the prototype of getpwuid_r.
2675 It is zero if d_getpwuid_r is undef, and one of the
2676 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2679 getservbyname_r_proto (d_getservbyname_r.U):
2680 This variable encodes the prototype of getservbyname_r.
2681 It is zero if d_getservbyname_r is undef, and one of the
2682 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2685 getservbyport_r_proto (d_getservbyport_r.U):
2686 This variable encodes the prototype of getservbyport_r.
2687 It is zero if d_getservbyport_r is undef, and one of the
2688 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2691 getservent_r_proto (d_getservent_r.U):
2692 This variable encodes the prototype of getservent_r.
2693 It is zero if d_getservent_r is undef, and one of the
2694 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2697 getspnam_r_proto (d_getspnam_r.U):
2698 This variable encodes the prototype of getspnam_r.
2699 It is zero if d_getspnam_r is undef, and one of the
2700 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2704 This variable contains the format string used for printing a Gid_t.
2706 gidsign (gidsign.U):
2707 This variable contains the signedness of a gidtype.
2708 1 for unsigned, -1 for signed.
2710 gidsize (gidsize.U):
2711 This variable contains the size of a gidtype in bytes.
2713 gidtype (gidtype.U):
2714 This variable defines Gid_t to be something like gid_t, int,
2715 ushort, or whatever type is used to declare the return type
2716 of getgid(). Typically, it is the type of group ids in the kernel.
2719 This variable holds the general path (space-separated) used to
2720 find libraries. It may contain directories that do not exist on
2721 this platform, libpth is the cleaned-up version.
2724 This variable is used internally by Configure to determine the
2725 full pathname (if any) of the gmake program. After Configure runs,
2726 the value is reset to a plain "gmake" and is not useful.
2728 gmtime_r_proto (d_gmtime_r.U):
2729 This variable encodes the prototype of gmtime_r.
2730 It is zero if d_gmtime_r is undef, and one of the
2731 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2734 gnulibc_version (d_gnulibc.U):
2735 This variable contains the version number of the GNU C library.
2736 It is usually something like '2.2.5'. It is a plain '' if this
2737 is not the GNU C library, or if the version is unknown.
2740 This variable is used internally by Configure to determine the
2741 full pathname (if any) of the grep program. After Configure runs,
2742 the value is reset to a plain "grep" and is not useful.
2745 This variable contains a command that produces the text of the
2746 /etc/group file. This is normally "cat /etc/group", but can be
2747 "ypcat group" when NIS is used.
2748 On some systems, such as os390, there may be no equivalent
2749 command, in which case this variable is unset.
2751 groupstype (groupstype.U):
2752 This variable defines Groups_t to be something like gid_t, int,
2753 ushort, or whatever type is used for the second argument to
2754 getgroups() and setgroups(). Usually, this is the same as
2755 gidtype (gid_t), but sometimes it isn't.
2758 This variable is used internally by Configure to determine the
2759 full pathname (if any) of the gzip program. After Configure runs,
2760 the value is reset to a plain "gzip" and is not useful.
2762 h_fcntl (h_fcntl.U):
2763 This is variable gets set in various places to tell i_fcntl that
2764 <fcntl.h> should be included.
2766 h_sysfile (h_sysfile.U):
2767 This is variable gets set in various places to tell i_sys_file that
2768 <sys/file.h> should be included.
2771 Gives the type of hints used for previous answers. May be one of
2772 "default", "recommended" or "previous".
2775 This variable contains a command that produces the text of the
2776 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2777 "ypcat hosts" when NIS is used.
2778 On some systems, such as os390, there may be no equivalent
2779 command, in which case this variable is unset.
2781 html1dir (html1dir.U):
2782 This variable contains the name of the directory in which html
2783 source pages are to be put. This directory is for pages
2784 that describe whole programs, not libraries or modules. It
2785 is intended to correspond roughly to section 1 of the Unix
2788 html1direxp (html1dir.U):
2789 This variable is the same as the html1dir variable, but is filename
2790 expanded at configuration time, for convenient use in makefiles.
2792 html3dir (html3dir.U):
2793 This variable contains the name of the directory in which html
2794 source pages are to be put. This directory is for pages
2795 that describe libraries or modules. It is intended to
2796 correspond roughly to section 3 of the Unix manuals.
2798 html3direxp (html3dir.U):
2799 This variable is the same as the html3dir variable, but is filename
2800 expanded at configuration time, for convenient use in makefiles.
2803 This variable is the size of an I16 in bytes.
2806 This variable contains the C type used for Perl's I16.
2809 This variable is the size of an I32 in bytes.
2812 This variable contains the C type used for Perl's I32.
2815 This variable is the size of an I64 in bytes.
2818 This variable contains the C type used for Perl's I64.
2821 This variable is the size of an I8 in bytes.
2824 This variable contains the C type used for Perl's I8.
2826 i_arpainet (i_arpainet.U):
2827 This variable conditionally defines the I_ARPA_INET symbol,
2828 and indicates whether a C program should include <arpa/inet.h>.
2830 i_assert (i_assert.U):
2831 This variable conditionally defines the I_ASSERT symbol, which
2832 indicates to the C program that <assert.h> exists and could be
2835 i_bsdioctl (i_sysioctl.U):
2836 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2837 indicates to the C program that <sys/bsdioctl.h> exists and should
2840 i_crypt (i_crypt.U):
2841 This variable conditionally defines the I_CRYPT symbol, and indicates
2842 whether a C program should include <crypt.h>.
2845 This variable conditionally defines the I_DB symbol, and indicates
2846 whether a C program may include Berkeley's DB include file <db.h>.
2849 This variable conditionally defines the I_DBM symbol, which
2850 indicates to the C program that <dbm.h> exists and should
2853 i_dirent (i_dirent.U):
2854 This variable conditionally defines I_DIRENT, which indicates
2855 to the C program that it should include <dirent.h>.
2858 This variable conditionally defines the I_DLD symbol, which
2859 indicates to the C program that <dld.h> (GNU dynamic loading)
2860 exists and should be included.
2862 i_dlfcn (i_dlfcn.U):
2863 This variable conditionally defines the I_DLFCN symbol, which
2864 indicates to the C program that <dlfcn.h> exists and should
2867 i_fcntl (i_fcntl.U):
2868 This variable controls the value of I_FCNTL (which tells
2869 the C program to include <fcntl.h>).
2871 i_float (i_float.U):
2872 This variable conditionally defines the I_FLOAT symbol, and indicates
2873 whether a C program may include <float.h> to get symbols like DBL_MAX
2874 or DBL_MIN, i.e. machine dependent floating point values.
2877 This variable conditionally defines the I_FP symbol, and indicates
2878 whether a C program should include <fp.h>.
2880 i_fp_class (i_fp_class.U):
2881 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2882 whether a C program should include <fp_class.h>.
2885 This variable conditionally defines the I_GDBM symbol, which
2886 indicates to the C program that <gdbm.h> exists and should
2890 This variable conditionally defines the I_GRP symbol, and indicates
2891 whether a C program should include <grp.h>.
2893 i_ieeefp (i_ieeefp.U):
2894 This variable conditionally defines the I_IEEEFP symbol, and indicates
2895 whether a C program should include <ieeefp.h>.
2897 i_inttypes (i_inttypes.U):
2898 This variable conditionally defines the I_INTTYPES symbol,
2899 and indicates whether a C program should include <inttypes.h>.
2901 i_langinfo (i_langinfo.U):
2902 This variable conditionally defines the I_LANGINFO symbol,
2903 and indicates whether a C program should include <langinfo.h>.
2905 i_libutil (i_libutil.U):
2906 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2907 whether a C program should include <libutil.h>.
2909 i_limits (i_limits.U):
2910 This variable conditionally defines the I_LIMITS symbol, and indicates
2911 whether a C program may include <limits.h> to get symbols like WORD_BIT
2914 i_locale (i_locale.U):
2915 This variable conditionally defines the I_LOCALE symbol,
2916 and indicates whether a C program should include <locale.h>.
2918 i_machcthr (i_machcthr.U):
2919 This variable conditionally defines the I_MACH_CTHREADS symbol,
2920 and indicates whether a C program should include <mach/cthreads.h>.
2922 i_malloc (i_malloc.U):
2923 This variable conditionally defines the I_MALLOC symbol, and indicates
2924 whether a C program should include <malloc.h>.
2927 This variable conditionally defines the I_MATH symbol, and indicates
2928 whether a C program may include <math.h>.
2930 i_memory (i_memory.U):
2931 This variable conditionally defines the I_MEMORY symbol, and indicates
2932 whether a C program should include <memory.h>.
2934 i_mntent (i_mntent.U):
2935 This variable conditionally defines the I_MNTENT symbol, and indicates
2936 whether a C program should include <mntent.h>.
2939 This variable conditionally defines the I_NDBM symbol, which
2940 indicates to the C program that <ndbm.h> exists and should
2943 i_netdb (i_netdb.U):
2944 This variable conditionally defines the I_NETDB symbol, and indicates
2945 whether a C program should include <netdb.h>.
2947 i_neterrno (i_neterrno.U):
2948 This variable conditionally defines the I_NET_ERRNO symbol, which
2949 indicates to the C program that <net/errno.h> exists and should
2952 i_netinettcp (i_netinettcp.U):
2953 This variable conditionally defines the I_NETINET_TCP symbol,
2954 and indicates whether a C program should include <netinet/tcp.h>.
2957 This variable conditionally defines I_NETINET_IN, which indicates
2958 to the C program that it should include <netinet/in.h>. Otherwise,
2959 you may try <sys/in.h>.
2962 This variable conditionally defines the I_POLL symbol, and indicates
2963 whether a C program should include <poll.h>.
2966 This variable conditionally defines the I_PROT symbol, and indicates
2967 whether a C program should include <prot.h>.
2969 i_pthread (i_pthread.U):
2970 This variable conditionally defines the I_PTHREAD symbol,
2971 and indicates whether a C program should include <pthread.h>.
2974 This variable conditionally defines I_PWD, which indicates
2975 to the C program that it should include <pwd.h>.
2977 i_rpcsvcdbm (i_dbm.U):
2978 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2979 indicates to the C program that <rpcsvc/dbm.h> exists and should
2980 be included. Some System V systems might need this instead of <dbm.h>.
2983 This variable conditionally defines the I_SFIO symbol,
2984 and indicates whether a C program should include <sfio.h>.
2986 i_sgtty (i_termio.U):
2987 This variable conditionally defines the I_SGTTY symbol, which
2988 indicates to the C program that it should include <sgtty.h> rather
2991 i_shadow (i_shadow.U):
2992 This variable conditionally defines the I_SHADOW symbol, and indicates
2993 whether a C program should include <shadow.h>.
2995 i_socks (i_socks.U):
2996 This variable conditionally defines the I_SOCKS symbol, and indicates
2997 whether a C program should include <socks.h>.
2999 i_stdarg (i_varhdr.U):
3000 This variable conditionally defines the I_STDARG symbol, which
3001 indicates to the C program that <stdarg.h> exists and should
3004 i_stddef (i_stddef.U):
3005 This variable conditionally defines the I_STDDEF symbol, which
3006 indicates to the C program that <stddef.h> exists and should
3009 i_stdlib (i_stdlib.U):
3010 This variable conditionally defines the I_STDLIB symbol, which
3011 indicates to the C program that <stdlib.h> exists and should
3014 i_string (i_string.U):
3015 This variable conditionally defines the I_STRING symbol, which
3016 indicates that <string.h> should be included rather than <strings.h>.
3018 i_sunmath (i_sunmath.U):
3019 This variable conditionally defines the I_SUNMATH symbol, and indicates
3020 whether a C program should include <sunmath.h>.
3022 i_sysaccess (i_sysaccess.U):
3023 This variable conditionally defines the I_SYS_ACCESS symbol,
3024 and indicates whether a C program should include <sys/access.h>.
3026 i_sysdir (i_sysdir.U):
3027 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3028 whether a C program should include <sys/dir.h>.
3030 i_sysfile (i_sysfile.U):
3031 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3032 whether a C program should include <sys/file.h> to get R_OK and friends.
3034 i_sysfilio (i_sysioctl.U):
3035 This variable conditionally defines the I_SYS_FILIO symbol, which
3036 indicates to the C program that <sys/filio.h> exists and should
3037 be included in preference to <sys/ioctl.h>.
3040 This variable conditionally defines I_SYS_IN, which indicates
3041 to the C program that it should include <sys/in.h> instead of
3044 i_sysioctl (i_sysioctl.U):
3045 This variable conditionally defines the I_SYS_IOCTL symbol, which
3046 indicates to the C program that <sys/ioctl.h> exists and should
3049 i_syslog (i_syslog.U):
3050 This variable conditionally defines the I_SYSLOG symbol,
3051 and indicates whether a C program should include <syslog.h>.
3053 i_sysmman (i_sysmman.U):
3054 This variable conditionally defines the I_SYS_MMAN symbol, and
3055 indicates whether a C program should include <sys/mman.h>.
3057 i_sysmode (i_sysmode.U):
3058 This variable conditionally defines the I_SYSMODE symbol,
3059 and indicates whether a C program should include <sys/mode.h>.
3061 i_sysmount (i_sysmount.U):
3062 This variable conditionally defines the I_SYSMOUNT symbol,
3063 and indicates whether a C program should include <sys/mount.h>.
3065 i_sysndir (i_sysndir.U):
3066 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3067 whether a C program should include <sys/ndir.h>.
3069 i_sysparam (i_sysparam.U):
3070 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3071 whether a C program should include <sys/param.h>.
3073 i_sysresrc (i_sysresrc.U):
3074 This variable conditionally defines the I_SYS_RESOURCE symbol,
3075 and indicates whether a C program should include <sys/resource.h>.
3077 i_syssecrt (i_syssecrt.U):
3078 This variable conditionally defines the I_SYS_SECURITY symbol,
3079 and indicates whether a C program should include <sys/security.h>.
3081 i_sysselct (i_sysselct.U):
3082 This variable conditionally defines I_SYS_SELECT, which indicates
3083 to the C program that it should include <sys/select.h> in order to
3084 get the definition of struct timeval.
3086 i_syssockio (i_sysioctl.U):
3087 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3088 C program that socket ioctl codes may be found in <sys/sockio.h>
3089 instead of <sys/ioctl.h>.
3091 i_sysstat (i_sysstat.U):
3092 This variable conditionally defines the I_SYS_STAT symbol,
3093 and indicates whether a C program should include <sys/stat.h>.
3095 i_sysstatfs (i_sysstatfs.U):
3096 This variable conditionally defines the I_SYSSTATFS symbol,
3097 and indicates whether a C program should include <sys/statfs.h>.
3099 i_sysstatvfs (i_sysstatvfs.U):
3100 This variable conditionally defines the I_SYSSTATVFS symbol,
3101 and indicates whether a C program should include <sys/statvfs.h>.
3103 i_systime (i_time.U):
3104 This variable conditionally defines I_SYS_TIME, which indicates
3105 to the C program that it should include <sys/time.h>.
3107 i_systimek (i_time.U):
3108 This variable conditionally defines I_SYS_TIME_KERNEL, which
3109 indicates to the C program that it should include <sys/time.h>
3110 with KERNEL defined.
3112 i_systimes (i_systimes.U):
3113 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3114 whether a C program should include <sys/times.h>.
3116 i_systypes (i_systypes.U):
3117 This variable conditionally defines the I_SYS_TYPES symbol,
3118 and indicates whether a C program should include <sys/types.h>.
3120 i_sysuio (i_sysuio.U):
3121 This variable conditionally defines the I_SYSUIO symbol, and indicates
3122 whether a C program should include <sys/uio.h>.
3124 i_sysun (i_sysun.U):
3125 This variable conditionally defines I_SYS_UN, which indicates
3126 to the C program that it should include <sys/un.h> to get UNIX
3127 domain socket definitions.
3129 i_sysutsname (i_sysutsname.U):
3130 This variable conditionally defines the I_SYSUTSNAME symbol,
3131 and indicates whether a C program should include <sys/utsname.h>.
3133 i_sysvfs (i_sysvfs.U):
3134 This variable conditionally defines the I_SYSVFS symbol,
3135 and indicates whether a C program should include <sys/vfs.h>.
3137 i_syswait (i_syswait.U):
3138 This variable conditionally defines I_SYS_WAIT, which indicates
3139 to the C program that it should include <sys/wait.h>.
3141 i_termio (i_termio.U):
3142 This variable conditionally defines the I_TERMIO symbol, which
3143 indicates to the C program that it should include <termio.h> rather
3146 i_termios (i_termio.U):
3147 This variable conditionally defines the I_TERMIOS symbol, which
3148 indicates to the C program that the POSIX <termios.h> file is
3152 This variable conditionally defines I_TIME, which indicates
3153 to the C program that it should include <time.h>.
3155 i_unistd (i_unistd.U):
3156 This variable conditionally defines the I_UNISTD symbol, and indicates
3157 whether a C program should include <unistd.h>.
3159 i_ustat (i_ustat.U):
3160 This variable conditionally defines the I_USTAT symbol, and indicates
3161 whether a C program should include <ustat.h>.
3163 i_utime (i_utime.U):
3164 This variable conditionally defines the I_UTIME symbol, and indicates
3165 whether a C program should include <utime.h>.
3167 i_values (i_values.U):
3168 This variable conditionally defines the I_VALUES symbol, and indicates
3169 whether a C program may include <values.h> to get symbols like MAXLONG
3172 i_varargs (i_varhdr.U):
3173 This variable conditionally defines I_VARARGS, which indicates
3174 to the C program that it should include <varargs.h>.
3176 i_varhdr (i_varhdr.U):
3177 Contains the name of the header to be included to get va_dcl definition.
3178 Typically one of varargs.h or stdarg.h.
3180 i_vfork (i_vfork.U):
3181 This variable conditionally defines the I_VFORK symbol, and indicates
3182 whether a C program should include vfork.h.
3184 ignore_versioned_solibs (libs.U):
3185 This variable should be non-empty if non-versioned shared
3186 libraries (libfoo.so.x.y) are to be ignored (because they
3187 cannot be linked against).
3189 inc_version_list (inc_version_list.U):
3190 This variable specifies the list of subdirectories in over
3191 which perl.c:incpush() and lib/lib.pm will automatically
3192 search when adding directories to @INC. The elements in
3193 the list are separated by spaces. This is only useful
3194 if you have a perl library directory tree structured like the
3195 default one. See INSTALL for how this works. The versioned
3196 site_perl directory was introduced in 5.005, so that is the
3197 lowest possible value.
3199 This list includes architecture-dependent directories back to
3200 version $api_versionstring (e.g. 5.5.640) and
3201 architecture-independent directories all the way back to
3204 inc_version_list_init (inc_version_list.U):
3205 This variable holds the same list as inc_version_list, but
3206 each item is enclosed in double quotes and separated by commas,
3207 suitable for use in the PERL_INC_VERSION_LIST initialization.
3210 This variable must preceed the normal include path to get hte
3211 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3212 Value can be "" or "/bsd43" on mips.
3215 This variable is defined but not used by Configure.
3216 The value is a plain '' and is not useful.
3218 initialinstalllocation (bin.U):
3219 When userelocatableinc is true, this variable holds the location
3220 that make install should copy the perl binary to, with all the
3221 run-time relocatable paths calculated from this at install time.
3222 When used, it is initialised to the original value of binexp, and
3223 then binexp is set to '.../', as the other binaries are found
3224 relative to the perl binary.
3226 installarchlib (archlib.U):
3227 This variable is really the same as archlibexp but may differ on
3228 those systems using AFS. For extra portability, only this variable
3229 should be used in makefiles.
3232 This variable is the same as binexp unless AFS is running in which case
3233 the user is explicitely prompted for it. This variable should always
3234 be used in your makefiles for maximum portability.
3236 installhtml1dir (html1dir.U):
3237 This variable is really the same as html1direxp, unless you are
3238 using a different installprefix. For extra portability, you
3239 should only use this variable within your makefiles.
3241 installhtml3dir (html3dir.U):
3242 This variable is really the same as html3direxp, unless you are
3243 using a different installprefix. For extra portability, you
3244 should only use this variable within your makefiles.
3246 installman1dir (man1dir.U):
3247 This variable is really the same as man1direxp, unless you are using
3248 AFS in which case it points to the read/write location whereas
3249 man1direxp only points to the read-only access location. For extra
3250 portability, you should only use this variable within your makefiles.
3252 installman3dir (man3dir.U):
3253 This variable is really the same as man3direxp, unless you are using
3254 AFS in which case it points to the read/write location whereas
3255 man3direxp only points to the read-only access location. For extra
3256 portability, you should only use this variable within your makefiles.
3258 installprefix (installprefix.U):
3259 This variable holds the name of the directory below which
3260 "make install" will install the package. For most users, this
3261 is the same as prefix. However, it is useful for
3262 installing the software into a different (usually temporary)
3263 location after which it can be bundled up and moved somehow
3264 to the final location specified by prefix.
3266 installprefixexp (installprefix.U):
3267 This variable holds the full absolute path of installprefix
3268 with all ~-expansion done.
3270 installprivlib (privlib.U):
3271 This variable is really the same as privlibexp but may differ on
3272 those systems using AFS. For extra portability, only this variable
3273 should be used in makefiles.
3275 installscript (scriptdir.U):
3276 This variable is usually the same as scriptdirexp, unless you are on
3277 a system running AFS, in which case they may differ slightly. You
3278 should always use this variable within your makefiles for portability.
3280 installsitearch (sitearch.U):
3281 This variable is really the same as sitearchexp but may differ on
3282 those systems using AFS. For extra portability, only this variable
3283 should be used in makefiles.
3285 installsitebin (sitebin.U):
3286 This variable is usually the same as sitebinexp, unless you are on
3287 a system running AFS, in which case they may differ slightly. You
3288 should always use this variable within your makefiles for portability.
3290 installsitehtml1dir (sitehtml1dir.U):
3291 This variable is really the same as sitehtml1direxp, unless you are using
3292 AFS in which case it points to the read/write location whereas
3293 html1direxp only points to the read-only access location. For extra
3294 portability, you should only use this variable within your makefiles.
3296 installsitehtml3dir (sitehtml3dir.U):
3297 This variable is really the same as sitehtml3direxp, unless you are using
3298 AFS in which case it points to the read/write location whereas
3299 html3direxp only points to the read-only access location. For extra
3300 portability, you should only use this variable within your makefiles.
3302 installsitelib (sitelib.U):
3303 This variable is really the same as sitelibexp but may differ on
3304 those systems using AFS. For extra portability, only this variable
3305 should be used in makefiles.
3307 installsiteman1dir (siteman1dir.U):
3308 This variable is really the same as siteman1direxp, unless you are using
3309 AFS in which case it points to the read/write location whereas
3310 man1direxp only points to the read-only access location. For extra
3311 portability, you should only use this variable within your makefiles.
3313 installsiteman3dir (siteman3dir.U):
3314 This variable is really the same as siteman3direxp, unless you are using
3315 AFS in which case it points to the read/write location whereas
3316 man3direxp only points to the read-only access location. For extra
3317 portability, you should only use this variable within your makefiles.
3319 installsitescript (sitescript.U):
3320 This variable is usually the same as sitescriptexp, unless you are on
3321 a system running AFS, in which case they may differ slightly. You
3322 should always use this variable within your makefiles for portability.
3324 installstyle (installstyle.U):
3325 This variable describes the "style" of the perl installation.
3326 This is intended to be useful for tools that need to
3327 manipulate entire perl distributions. Perl itself doesn't use
3328 this to find its libraries -- the library directories are
3329 stored directly in Config.pm. Currently, there are only two
3330 styles: "lib" and "lib/perl5". The default library locations
3331 (e.g. privlib, sitelib) are either $prefix/lib or
3332 $prefix/lib/perl5. The former is useful if $prefix is a
3333 directory dedicated to perl (e.g. /opt/perl), while the latter
3334 is useful if $prefix is shared by many packages, e.g. if
3337 Unfortunately, while this "style" variable is used to set
3338 defaults for all three directory hierarchies (core, vendor, and
3339 site), there is no guarantee that the same style is actually
3340 appropriate for all those directories. For example, $prefix
3341 might be /opt/perl, but $siteprefix might be /usr/local.
3342 (Perhaps, in retrospect, the "lib" style should never have been
3343 supported, but it did seem like a nice idea at the time.)
3345 The situation is even less clear for tools such as MakeMaker
3346 that can be used to install additional modules into
3347 non-standard places. For example, if a user intends to install
3348 a module into a private directory (perhaps by setting PREFIX on
3349 the Makefile.PL command line), then there is no reason to
3350 assume that the Configure-time $installstyle setting will be
3351 relevant for that PREFIX.
3353 This may later be extended to include other information, so
3354 be careful with pattern-matching on the results.
3356 For compatibility with perl5.005 and earlier, the default
3357 setting is based on whether or not $prefix contains the string
3360 installusrbinperl (instubperl.U):
3361 This variable tells whether Perl should be installed also as
3362 /usr/bin/perl in addition to
3365 installvendorarch (vendorarch.U):
3366 This variable is really the same as vendorarchexp but may differ on
3367 those systems using AFS. For extra portability, only this variable
3368 should be used in makefiles.
3370 installvendorbin (vendorbin.U):
3371 This variable is really the same as vendorbinexp but may differ on
3372 those systems using AFS. For extra portability, only this variable
3373 should be used in makefiles.
3375 installvendorhtml1dir (vendorhtml1dir.U):
3376 This variable is really the same as vendorhtml1direxp but may differ on
3377 those systems using AFS. For extra portability, only this variable
3378 should be used in makefiles.
3380 installvendorhtml3dir (vendorhtml3dir.U):
3381 This variable is really the same as vendorhtml3direxp but may differ on
3382 those systems using AFS. For extra portability, only this variable
3383 should be used in makefiles.
3385 installvendorlib (vendorlib.U):
3386 This variable is really the same as vendorlibexp but may differ on
3387 those systems using AFS. For extra portability, only this variable
3388 should be used in makefiles.
3390 installvendorman1dir (vendorman1dir.U):
3391 This variable is really the same as vendorman1direxp but may differ on
3392 those systems using AFS. For extra portability, only this variable
3393 should be used in makefiles.
3395 installvendorman3dir (vendorman3dir.U):
3396 This variable is really the same as vendorman3direxp but may differ on
3397 those systems using AFS. For extra portability, only this variable
3398 should be used in makefiles.
3400 installvendorscript (vendorscript.U):
3401 This variable is really the same as vendorscriptexp but may differ on
3402 those systems using AFS. For extra portability, only this variable
3403 should be used in makefiles.
3405 intsize (intsize.U):
3406 This variable contains the value of the INTSIZE symbol, which
3407 indicates to the C program how many bytes there are in an int.
3409 issymlink (issymlink.U):
3410 This variable holds the test command to test for a symbolic link
3411 (if they are supported). Typical values include 'test -h' and
3414 ivdformat (perlxvf.U):
3415 This variable contains the format string used for printing
3416 a Perl IV as a signed decimal integer.
3419 This variable is the size of an IV in bytes.
3422 This variable contains the C type used for Perl's IV.
3424 known_extensions (Extensions.U):
3425 This variable holds a list of all XS extensions included in
3429 This variable is defined but not used by Configure.
3430 The value is a plain '' and is not useful.
3433 This variable indicates the program to be used to link
3434 libraries for dynamic loading. On some systems, it is 'ld'.
3435 On ELF systems, it should be $cc. Mostly, we'll try to respect
3436 the hint file setting.
3438 lddlflags (dlsrc.U):
3439 This variable contains any special flags that might need to be
3440 passed to $ld to create a shared library suitable for dynamic
3441 loading. It is up to the makefile to use it. For hpux, it
3442 should be '-b'. For sunos 4.1, it is empty.
3444 ldflags (ccflags.U):
3445 This variable contains any additional C loader flags desired by
3446 the user. It is up to the Makefile to use this.
3448 ldflags_uselargefiles (uselfs.U):
3449 This variable contains the loader flags needed by large file builds
3450 and added to ldflags by hints files.
3452 ldlibpthname (libperl.U):
3453 This variable holds the name of the shared library
3454 search path, often LD_LIBRARY_PATH. To get an empty
3455 string, the hints file must set this to 'none'.
3458 This variable is used internally by Configure to determine the
3459 full pathname (if any) of the less program. After Configure runs,
3460 the value is reset to a plain "less" and is not useful.
3463 This is an old synonym for _a.
3466 This variable contains the location of the C library.
3468 libperl (libperl.U):
3469 The perl executable is obtained by linking perlmain.c with
3470 libperl, any static extensions (usually just DynaLoader),
3471 and any other libraries needed on this system. libperl
3472 is usually libperl.a, but can also be libperl.so.xxx if
3473 the user wishes to build a perl executable with a shared
3477 This variable holds the general path (space-separated) used to find
3478 libraries. It is intended to be used by other units.
3481 This variable holds the additional libraries we want to use.
3482 It is up to the Makefile to deal with it. The list can be empty.
3485 This variable holds the directory names aka dirnames of the libraries
3486 we found and accepted, duplicates are removed.
3489 This variable holds the filenames aka basenames of the libraries
3490 we found and accepted.
3493 This variable holds the full pathnames of the libraries
3494 we found and accepted.
3497 This variable holds the directory names probed for libraries.
3499 libswanted (Myinit.U):
3500 This variable holds a list of all the libraries we want to
3501 search. The order is chosen to pick up the c library
3502 ahead of ucb or bsd libraries for SVR4.
3504 libswanted_uselargefiles (uselfs.U):
3505 This variable contains the libraries needed by large file builds
3506 and added to ldflags by hints files. It is a space separated list
3507 of the library names without the "lib" prefix or any suffix, just
3511 This variable is defined but not used by Configure.
3512 The value is a plain '' and is not useful.
3515 This variable is defined but not used by Configure.
3516 The value is a plain '' and is not useful.
3518 lkflags (ccflags.U):
3519 This variable contains any additional C partial linker flags desired by
3520 the user. It is up to the Makefile to use this.
3523 This variable is used internally by Configure to determine the
3524 full pathname (if any) of the ln program. After Configure runs,
3525 the value is reset to a plain "ln" and is not useful.
3528 This variable holds the name of the command to make
3529 symbolic links (if they are supported). It can be used
3530 in the Makefile. It is either 'ln -s' or 'ln'
3532 localtime_r_proto (d_localtime_r.U):
3533 This variable encodes the prototype of localtime_r.
3534 It is zero if d_localtime_r is undef, and one of the
3535 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3538 locincpth (ccflags.U):
3539 This variable contains a list of additional directories to be
3540 searched by the compiler. The appropriate '-I' directives will
3541 be added to ccflags. This is intended to simplify setting
3542 local directories from the Configure command line.
3543 It's not much, but it parallels the loclibpth stuff in libpth.U.
3545 loclibpth (libpth.U):
3546 This variable holds the paths (space-separated) used to find local
3547 libraries. It is prepended to libpth, and is intended to be easily
3548 set from the command line.
3550 longdblsize (d_longdbl.U):
3551 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3552 indicates to the C program how many bytes there are in a long double,
3553 if this system supports long doubles.
3555 longlongsize (d_longlong.U):
3556 This variable contains the value of the LONGLONGSIZE symbol, which
3557 indicates to the C program how many bytes there are in a long long,
3558 if this system supports long long.
3560 longsize (intsize.U):
3561 This variable contains the value of the LONGSIZE symbol, which
3562 indicates to the C program how many bytes there are in a long.
3565 This variable is defined but not used by Configure.
3566 The value is a plain '' and is not useful.
3569 This variable is defined but not used by Configure.
3570 The value is a plain '' and is not useful.
3573 This variable is used internally by Configure to determine the
3574 full pathname (if any) of the ls program. After Configure runs,
3575 the value is reset to a plain "ls" and is not useful.
3577 lseeksize (lseektype.U):
3578 This variable defines lseektype to be something like off_t, long,
3579 or whatever type is used to declare lseek offset's type in the
3580 kernel (which also appears to be lseek's return type).
3582 lseektype (lseektype.U):
3583 This variable defines lseektype to be something like off_t, long,
3584 or whatever type is used to declare lseek offset's type in the
3585 kernel (which also appears to be lseek's return type).
3588 This variable indicates that the Misc Attribute Definition code is to
3592 If the Misc Attribute Decoration is to be compiled, this variable is
3593 set to the name of the extra header files to be used, else it is ''
3596 If the Misc Attribute Decoration is to be compiled, this variable is
3597 set to the name of the extra object files to be used, else it is ''
3600 If the Misc Attribute Decoration is to be compiled, this variable is
3601 set to the name of the extra C source files to be used, else it is ''
3604 This variable is defined but not used by Configure.
3605 The value is a plain '' and is not useful.
3608 This variable is defined but not used by Configure.
3609 The value is a plain '' and is not useful.
3612 This variable is used internally by Configure to determine the
3613 full pathname (if any) of the make program. After Configure runs,
3614 the value is reset to a plain "make" and is not useful.
3616 make_set_make (make.U):
3617 Some versions of 'make' set the variable MAKE. Others do not.
3618 This variable contains the string to be included in Makefile.SH
3619 so that MAKE is set if needed, and not if not needed.
3620 Possible values are:
3622 make_set_make='#' # If your make program handles this for you,
3624 make_set_make="MAKE=$make" # if it doesn't.
3626 This uses a comment character to distinguish a
3627 'set' value (from a previous config.sh or Configure '-D' option)
3628 from an uncomputed value.
3630 mallocobj (mallocsrc.U):
3631 This variable contains the name of the malloc.o that this package
3632 generates, if that malloc.o is preferred over the system malloc.
3633 Otherwise the value is null. This variable is intended for generating
3634 Makefiles. See mallocsrc.
3636 mallocsrc (mallocsrc.U):
3637 This variable contains the name of the malloc.c that comes with
3638 the package, if that malloc.c is preferred over the system malloc.
3639 Otherwise the value is null. This variable is intended for generating
3642 malloctype (mallocsrc.U):
3643 This variable contains the kind of ptr returned by malloc and realloc.
3645 man1dir (man1dir.U):
3646 This variable contains the name of the directory in which manual
3647 source pages are to be put. It is the responsibility of the
3648 Makefile.SH to get the value of this into the proper command.
3649 You must be prepared to do the ~name expansion yourself.
3651 man1direxp (man1dir.U):
3652 This variable is the same as the man1dir variable, but is filename
3653 expanded at configuration time, for convenient use in makefiles.
3655 man1ext (man1dir.U):
3656 This variable contains the extension that the manual page should
3657 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3660 man3dir (man3dir.U):
3661 This variable contains the name of the directory in which manual
3662 source pages are to be put. It is the responsibility of the
3663 Makefile.SH to get the value of this into the proper command.
3664 You must be prepared to do the ~name expansion yourself.
3666 man3direxp (man3dir.U):
3667 This variable is the same as the man3dir variable, but is filename
3668 expanded at configuration time, for convenient use in makefiles.
3670 man3ext (man3dir.U):
3671 This variable contains the extension that the manual page should
3672 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3676 This variable is used internally by Configure to determine the
3677 full pathname (if any) of the Mcc program. After Configure runs,
3678 the value is reset to a plain "Mcc" and is not useful.
3680 mips_type (usrinc.U):
3681 This variable holds the environment type for the mips system.
3682 Possible values are "BSD 4.3" and "System V".
3684 mistrustnm (Csym.U):
3685 This variable can be used to establish a fallthrough for the cases
3686 where nm fails to find a symbol. If usenm is false or usenm is true
3687 and mistrustnm is false, this variable has no effect. If usenm is true
3688 and mistrustnm is "compile", a test program will be compiled to try to
3689 find any symbol that can't be located via nm lookup. If mistrustnm is
3690 "run", the test program will be run as well as being compiled.
3693 This variable is used internally by Configure to determine the
3694 full pathname (if any) of the mkdir program. After Configure runs,
3695 the value is reset to a plain "mkdir" and is not useful.
3697 mmaptype (d_mmap.U):
3698 This symbol contains the type of pointer returned by mmap()
3699 (and simultaneously the type of the first argument).
3700 It can be 'void *' or 'caddr_t'.
3702 modetype (modetype.U):
3703 This variable defines modetype to be something like mode_t,
3704 int, unsigned short, or whatever type is used to declare file
3705 modes for system calls.
3708 This variable is used internally by Configure to determine the
3709 full pathname (if any) of the more program. After Configure runs,
3710 the value is reset to a plain "more" and is not useful.
3712 multiarch (multiarch.U):
3713 This variable conditionally defines the MULTIARCH symbol
3714 which signifies the presence of multiplatform files.
3715 This is normally set by hints files.
3718 This variable is defined but not used by Configure.
3719 The value is a plain '' and is not useful.
3721 myarchname (archname.U):
3722 This variable holds the architecture name computed by Configure in
3723 a previous run. It is not intended to be perused by any user and
3724 should never be set in a hint file.
3726 mydomain (myhostname.U):
3727 This variable contains the eventual value of the MYDOMAIN symbol,
3728 which is the domain of the host the program is going to run on.
3729 The domain must be appended to myhostname to form a complete host name.
3730 The dot comes with mydomain, and need not be supplied by the program.
3732 myhostname (myhostname.U):
3733 This variable contains the eventual value of the MYHOSTNAME symbol,
3734 which is the name of the host the program is going to run on.
3735 The domain is not kept with hostname, but must be gotten from mydomain.
3736 The dot comes with mydomain, and need not be supplied by the program.
3738 myuname (Oldconfig.U):
3739 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3740 pseudo variables assignments in the output are stripped, thank you. The
3741 whole thing is then lower-cased.
3744 This variable contains the '-n' flag if that is what causes the echo
3745 command to suppress newline. Otherwise it is null. Correct usage is
3746 $echo $n "prompt for a question: $c".
3748 need_va_copy (need_va_copy.U):
3749 This symbol, if defined, indicates that the system stores
3750 the variable argument list datatype, va_list, in a format
3751 that cannot be copied by simple assignment, so that some
3752 other means must be used when copying is required.
3753 As such systems vary in their provision (or non-provision)
3754 of copying mechanisms, handy.h defines a platform-
3755 independent macro, Perl_va_copy(src, dst), to do the job.
3757 netdb_hlen_type (netdbtype.U):
3758 This variable holds the type used for the 2nd argument to
3759 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3760 This is only useful if you have gethostbyaddr(), naturally.
3762 netdb_host_type (netdbtype.U):
3763 This variable holds the type used for the 1st argument to
3764 gethostbyaddr(). Usually, this is char * or void *, possibly
3765 with or without a const prefix.
3766 This is only useful if you have gethostbyaddr(), naturally.
3768 netdb_name_type (netdbtype.U):
3769 This variable holds the type used for the argument to
3770 gethostbyname(). Usually, this is char * or const char *.
3771 This is only useful if you have gethostbyname(), naturally.
3773 netdb_net_type (netdbtype.U):
3774 This variable holds the type used for the 1st argument to
3775 getnetbyaddr(). Usually, this is int or long.
3776 This is only useful if you have getnetbyaddr(), naturally.
3779 This variable is used internally by Configure to determine the
3780 full pathname (if any) of the nm program. After Configure runs,
3781 the value is reset to a plain "nm" and is not useful.
3784 This variable holds the options that may be necessary for nm.
3786 nm_so_opt (usenm.U):
3787 This variable holds the options that may be necessary for nm
3788 to work on a shared library but that can not be used on an
3789 archive library. Currently, this is only used by Linux, where
3790 nm --dynamic is *required* to get symbols from an ELF library which
3791 has been stripped, but nm --dynamic is *fatal* on an archive library.
3792 Maybe Linux should just always set usenm=false.
3794 nonxs_ext (Extensions.U):
3795 This variable holds a list of all non-xs extensions included
3796 in the package. All of them will be built.
3799 This variable is used internally by Configure to determine the
3800 full pathname (if any) of the nroff program. After Configure runs,
3801 the value is reset to a plain "nroff" and is not useful.
3803 nv_preserves_uv_bits (perlxv.U):
3804 This variable indicates how many of bits type uvtype
3805 a variable nvtype can preserve.
3807 nveformat (perlxvf.U):
3808 This variable contains the format string used for printing
3809 a Perl NV using %e-ish floating point format.
3811 nvEUformat (perlxvf.U):
3812 This variable contains the format string used for printing
3813 a Perl NV using %E-ish floating point format.
3815 nvfformat (perlxvf.U):
3816 This variable confains the format string used for printing
3817 a Perl NV using %f-ish floating point format.
3819 nvFUformat (perlxvf.U):
3820 This variable confains the format string used for printing
3821 a Perl NV using %F-ish floating point format.
3823 nvgformat (perlxvf.U):
3824 This variable contains the format string used for printing
3825 a Perl NV using %g-ish floating point format.
3827 nvGUformat (perlxvf.U):
3828 This variable contains the format string used for printing
3829 a Perl NV using %G-ish floating point format.
3832 This variable is the size of an NV in bytes.
3835 This variable contains the C type used for Perl's NV.
3837 o_nonblock (nblock_io.U):
3838 This variable bears the symbol value to be used during open() or fcntl()
3839 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3840 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3841 but that is only supported by some devices.
3844 This is an old synonym for _o.
3846 old_pthread_create_joinable (d_pthrattrj.U):
3847 This variable defines the constant to use for creating joinable
3848 (aka undetached) pthreads. Unused if pthread.h defines
3849 PTHREAD_CREATE_JOINABLE. If used, possible values are
3850 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3852 optimize (ccflags.U):
3853 This variable contains any optimizer/debugger flag that should be used.
3854 It is up to the Makefile to use it.
3856 orderlib (orderlib.U):
3857 This variable is "true" if the components of libraries must be ordered
3858 (with `lorder $* | tsort`) before placing them in an archive. Set to
3859 "false" if ranlib or ar can generate random libraries.
3861 osname (Oldconfig.U):
3862 This variable contains the operating system name (e.g. sunos,
3863 solaris, hpux, etc.). It can be useful later on for setting
3864 defaults. Any spaces are replaced with underscores. It is set
3865 to a null string if we can't figure it out.
3867 osvers (Oldconfig.U):
3868 This variable contains the operating system version (e.g.
3869 4.1.3, 5.2, etc.). It is primarily used for helping select
3870 an appropriate hints file, but might be useful elsewhere for
3871 setting defaults. It is set to '' if we can't figure it out.
3872 We try to be flexible about how much of the version number
3873 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3874 same for this package, hints files might just be os_4.0 or
3875 os_4.1, etc., not keeping separate files for each little release.
3877 otherlibdirs (otherlibdirs.U):
3878 This variable contains a colon-separated set of paths for the perl
3879 binary to search for additional library files or modules.
3880 These directories will be tacked to the end of @INC.
3881 Perl will automatically search below each path for version-
3882 and architecture-specific directories. See inc_version_list
3884 A value of ' ' means 'none' and is used to preserve this value
3885 for the next run through Configure.
3887 package (package.U):
3888 This variable contains the name of the package being constructed.
3889 It is primarily intended for the use of later Configure units.
3892 This variable contains the name of the preferred pager on the system.
3893 Usual values are (the full pathnames of) more, less, pg, or cat.
3896 This variable contains a command that produces the text of the
3897 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3898 "ypcat passwd" when NIS is used.
3899 On some systems, such as os390, there may be no equivalent
3900 command, in which case this variable is unset.
3902 patchlevel (patchlevel.U):
3903 The patchlevel level of this package.
3904 The value of patchlevel comes from the patchlevel.h file.
3905 In a version number such as 5.6.1, this is the "6".
3906 In patchlevel.h, this is referred to as "PERL_VERSION".
3909 This is an old synonym for p_ in Head.U, the character
3910 used to separate elements in the command shell search PATH.
3913 This variable is defined but not used by Configure.
3914 The value is a plain '' and is not useful.
3917 This variable contains the full path (if any) to a previously
3918 installed perl5.005 or later suitable for running the script
3919 to determine inc_version_list.
3921 PERL_API_REVISION (patchlevel.h):
3922 This number describes the earliest compatible PERL_REVISION of
3923 Perl ("compatibility" here being defined as sufficient binary/API
3924 compatibility to run XS code built with the older version).
3925 Normally this does not change across maintenance releases.
3926 Please read the comment in patchlevel.h.
3928 PERL_API_SUBVERSION (patchlevel.h):
3929 This number describes the earliest compatible PERL_SUBVERSION of
3930 Perl ("compatibility" here being defined as sufficient binary/API
3931 compatibility to run XS code built with the older version).
3932 Normally this does not change across maintenance releases.
3933 Please read the comment in patchlevel.h.
3935 PERL_API_VERSION (patchlevel.h):
3936 This number describes the earliest compatible PERL_VERSION of
3937 Perl ("compatibility" here being defined as sufficient binary/API
3938 compatibility to run XS code built with the older version).
3939 Normally this does not change across maintenance releases.
3940 Please read the comment in patchlevel.h.
3942 PERL_CONFIG_SH (Oldsyms.U):
3943 This is set to 'true' in config.sh so that a shell script
3944 sourcing config.sh can tell if it has been sourced already.
3946 PERL_PATCHLEVEL (Oldsyms.U):
3947 This symbol reflects the patchlevel, if available. Will usually
3948 come from the .patch file, which is available when the perl
3949 source tree was fetched with rsync.
3951 perl_patchlevel (patchlevel.U):
3952 This is the Perl patch level, a numeric change identifier,
3953 as defined by whichever source code maintenance system
3954 is used to maintain the patches; currently Perforce.
3955 It does not correlate with the Perl version numbers or
3956 the maintenance versus development dichotomy except
3957 by also being increasing.
3959 PERL_REVISION (Oldsyms.U):
3960 In a Perl version number such as 5.6.2, this is the 5.
3961 This value is manually set in patchlevel.h
3963 PERL_SUBVERSION (Oldsyms.U):
3964 In a Perl version number such as 5.6.2, this is the 2.
3965 Values greater than 50 represent potentially unstable
3966 development subversions.
3967 This value is manually set in patchlevel.h
3969 PERL_VERSION (Oldsyms.U):
3970 In a Perl version number such as 5.6.2, this is the 6.
3971 This value is manually set in patchlevel.h
3973 perladmin (perladmin.U):
3974 Electronic mail address of the perl5 administrator.
3977 The list of libraries needed by Perl only (any libraries needed
3978 by extensions only will by dropped, if using dynamic loading).
3980 perlpath (perlpath.U):
3981 This variable contains the eventual value of the PERLPATH symbol,
3982 which contains the name of the perl interpreter to be used in
3983 shell scripts and in the "eval 'exec'" idiom. This variable is
3984 not necessarily the pathname of the file containing the perl
3985 interpreter; you must append the executable extension (_exe) if
3986 it is not already present. Note that Perl code that runs during
3987 the Perl build process cannot reference this variable, as Perl
3988 may not have been installed, or even if installed, may be a
3989 different version of Perl.
3992 This variable is used internally by Configure to determine the
3993 full pathname (if any) of the pg program. After Configure runs,
3994 the value is reset to a plain "pg" and is not useful.
3996 phostname (myhostname.U):
3997 This variable contains the eventual value of the PHOSTNAME symbol,
3998 which is a command that can be fed to popen() to get the host name.
3999 The program should probably not presume that the domain is or isn't
4002 pidtype (pidtype.U):
4003 This variable defines PIDTYPE to be something like pid_t, int,
4004 ushort, or whatever type is used to declare process ids in the kernel.
4007 Holds the private path used by Configure to find out the libraries.
4008 Its value is prepend to libpth. This variable takes care of special
4009 machines, like the mips. Usually, it should be empty.
4012 This variable is defined but not used by Configure.
4013 The value is a plain '' and is not useful.
4016 This variable is defined but not used by Configure.
4017 The value is a plain '' and is not useful.
4020 This variable holds the name of the directory below which the
4021 user will install the package. Usually, this is /usr/local, and
4022 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4023 man pages in /usr/local/man, etc. It is only used to set defaults
4024 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4026 prefixexp (prefix.U):
4027 This variable holds the full absolute path of the directory below
4028 which the user will install the package. Derived from prefix.
4030 privlib (privlib.U):
4031 This variable contains the eventual value of the PRIVLIB symbol,
4032 which is the name of the private library for this package. It may
4033 have a ~ on the front. It is up to the makefile to eventually create
4034 this directory while performing installation (with ~ substitution).
4036 privlibexp (privlib.U):
4037 This variable is the ~name expanded version of privlib, so that you
4038 may use it directly in Makefiles or shell scripts.
4040 procselfexe (d_procselfexe.U):
4041 If d_procselfexe is defined, $procselfexe is the filename
4042 of the symbolic link pointing to the absolute pathname of
4043 the executing program.
4045 prototype (prototype.U):
4046 This variable holds the eventual value of CAN_PROTOTYPE, which
4047 indicates the C compiler can handle funciton prototypes.
4049 ptrsize (ptrsize.U):
4050 This variable contains the value of the PTRSIZE symbol, which
4051 indicates to the C program how many bytes there are in a pointer.
4053 quadkind (quadtype.U):
4054 This variable, if defined, encodes the type of a quad:
4055 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4057 quadtype (quadtype.U):
4058 This variable defines Quad_t to be something like long, int,
4059 long long, int64_t, or whatever type is used for 64-bit integers.
4061 randbits (randfunc.U):
4062 Indicates how many bits are produced by the function used to
4063 generate normalized random numbers.
4065 randfunc (randfunc.U):
4066 Indicates the name of the random number function to use.
4067 Values include drand48, random, and rand. In C programs,
4068 the 'Drand01' macro is defined to generate uniformly distributed
4069 random numbers over the range [0., 1.[ (see drand01 and nrand).
4071 random_r_proto (d_random_r.U):
4072 This variable encodes the prototype of random_r.
4073 It is zero if d_random_r is undef, and one of the
4074 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4077 randseedtype (randfunc.U):
4078 Indicates the type of the argument of the seedfunc.
4080 ranlib (orderlib.U):
4081 This variable is set to the pathname of the ranlib program, if it is
4082 needed to generate random libraries. Set to ":" if ar can generate
4083 random libraries or if random libraries are not supported
4085 rd_nodata (nblock_io.U):
4086 This variable holds the return code from read() when no data is
4087 present. It should be -1, but some systems return 0 when O_NDELAY is
4088 used, which is a shame because you cannot make the difference between
4089 no data and an EOF.. Sigh!
4091 readdir64_r_proto (d_readdir64_r.U):
4092 This variable encodes the prototype of readdir64_r.
4093 It is zero if d_readdir64_r is undef, and one of the
4094 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4097 readdir_r_proto (d_readdir_r.U):
4098 This variable encodes the prototype of readdir_r.
4099 It is zero if d_readdir_r is undef, and one of the
4100 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4103 revision (patchlevel.U):
4104 The value of revision comes from the patchlevel.h file.
4105 In a version number such as 5.6.1, this is the "5".
4106 In patchlevel.h, this is referred to as "PERL_REVISION".
4109 This variable is used internally by Configure to determine the
4110 full pathname (if any) of the rm program. After Configure runs,
4111 the value is reset to a plain "rm" and is not useful.
4114 This is a cleanup variable for try test programs.
4115 Internal Configure use only.
4118 This variable is defined but not used by Configure.
4119 The value is a plain '' and is not useful.
4122 This variable contains the command used by Configure
4123 to copy and execute a cross-compiled executable in the
4124 target host. Useful and available only during Perl build.
4125 Empty string '' if not cross-compiling.
4128 This variable contains 'true' or 'false' depending whether the
4129 nm extraction should be performed or not, according to the value
4130 of usenm and the flags on the Configure command line.
4132 sched_yield (d_pthread_y.U):
4133 This variable defines the way to yield the execution
4134 of the current thread.
4136 scriptdir (scriptdir.U):
4137 This variable holds the name of the directory in which the user wants
4138 to put publicly scripts for the package in question. It is either
4139 the same directory as for binaries, or a special one that can be
4140 mounted across different architectures, like /usr/share. Programs
4141 must be prepared to deal with ~name expansion.
4143 scriptdirexp (scriptdir.U):
4144 This variable is the same as scriptdir, but is filename expanded
4145 at configuration time, for programs not wanting to bother with it.
4148 This variable is used internally by Configure to determine the
4149 full pathname (if any) of the sed program. After Configure runs,
4150 the value is reset to a plain "sed" and is not useful.
4152 seedfunc (randfunc.U):
4153 Indicates the random number generating seed function.
4154 Values include srand48, srandom, and srand.
4156 selectminbits (selectminbits.U):
4157 This variable holds the minimum number of bits operated by select.
4158 That is, if you do select(n, ...), how many bits at least will be
4159 cleared in the masks if some activity is detected. Usually this
4160 is either n or 32*ceil(n/32), especially many little-endians do
4161 the latter. This is only useful if you have select(), naturally.
4163 selecttype (selecttype.U):
4164 This variable holds the type used for the 2nd, 3rd, and 4th
4165 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4166 is defined, and 'int *' otherwise. This is only useful if you
4167 have select(), naturally.
4170 This variable is defined but not used by Configure.
4171 The value is a plain '' and is not useful.
4173 setgrent_r_proto (d_setgrent_r.U):
4174 This variable encodes the prototype of setgrent_r.
4175 It is zero if d_setgrent_r is undef, and one of the
4176 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4179 sethostent_r_proto (d_sethostent_r.U):
4180 This variable encodes the prototype of sethostent_r.
4181 It is zero if d_sethostent_r is undef, and one of the
4182 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4185 setlocale_r_proto (d_setlocale_r.U):
4186 This variable encodes the prototype of setlocale_r.
4187 It is zero if d_setlocale_r is undef, and one of the
4188 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4191 setnetent_r_proto (d_setnetent_r.U):
4192 This variable encodes the prototype of setnetent_r.
4193 It is zero if d_setnetent_r is undef, and one of the
4194 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4197 setprotoent_r_proto (d_setprotoent_r.U):
4198 This variable encodes the prototype of setprotoent_r.
4199 It is zero if d_setprotoent_r is undef, and one of the
4200 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4203 setpwent_r_proto (d_setpwent_r.U):
4204 This variable encodes the prototype of setpwent_r.
4205 It is zero if d_setpwent_r is undef, and one of the
4206 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4209 setservent_r_proto (d_setservent_r.U):
4210 This variable encodes the prototype of setservent_r.
4211 It is zero if d_setservent_r is undef, and one of the
4212 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4216 This variable contains the full pathname of the shell used
4217 on this system to execute Bourne shell scripts. Usually, this will be
4218 /bin/sh, though it's possible that some systems will have /bin/ksh,
4219 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4221 This unit comes before Options.U, so you can't set sh with a '-D'
4222 option, though you can override this (and startsh)
4223 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4226 This variable is defined but not used by Configure.
4227 The value is a plain '' and is not useful.
4229 sharpbang (spitshell.U):
4230 This variable contains the string #! if this system supports that
4233 shmattype (d_shmat.U):
4234 This symbol contains the type of pointer returned by shmat().
4235 It can be 'void *' or 'char *'.
4237 shortsize (intsize.U):
4238 This variable contains the value of the SHORTSIZE symbol which
4239 indicates to the C program how many bytes there are in a short.
4241 shrpenv (libperl.U):
4242 If the user builds a shared libperl.so, then we need to tell the
4243 'perl' executable where it will be able to find the installed libperl.so.
4244 One way to do this on some systems is to set the environment variable
4245 LD_RUN_PATH to the directory that will be the final location of the
4246 shared libperl.so. The makefile can use this with something like
4247 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4249 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4252 See the main perl Makefile.SH for actual working usage.
4253 Alternatively, we might be able to use a command line option such
4254 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4255 $archlibexp/CORE (Linux).
4257 shsharp (spitshell.U):
4258 This variable tells further Configure units whether your sh can
4261 sig_count (sig_name.U):
4262 This variable holds a number larger than the largest valid
4263 signal number. This is usually the same as the NSIG macro.
4265 sig_name (sig_name.U):
4266 This variable holds the signal names, space separated. The leading
4267 SIG in signal name is removed. A ZERO is prepended to the list.
4268 This is currently not used, sig_name_init is used instead.
4270 sig_name_init (sig_name.U):
4271 This variable holds the signal names, enclosed in double quotes and
4272 separated by commas, suitable for use in the SIG_NAME definition
4273 below. A "ZERO" is prepended to the list, and the list is
4274 terminated with a plain 0. The leading SIG in signal names
4275 is removed. See sig_num.
4277 sig_num (sig_name.U):
4278 This variable holds the signal numbers, space separated. A ZERO is
4279 prepended to the list (corresponding to the fake SIGZERO).
4280 Those numbers correspond to the value of the signal listed
4281 in the same place within the sig_name list.
4282 This is currently not used, sig_num_init is used instead.
4284 sig_num_init (sig_name.U):
4285 This variable holds the signal numbers, enclosed in double quotes and
4286 separated by commas, suitable for use in the SIG_NUM definition
4287 below. A "ZERO" is prepended to the list, and the list is
4288 terminated with a plain 0.
4290 sig_size (sig_name.U):
4291 This variable contains the number of elements of the sig_name
4294 signal_t (d_voidsig.U):
4295 This variable holds the type of the signal handler (void or int).
4297 sitearch (sitearch.U):
4298 This variable contains the eventual value of the SITEARCH symbol,
4299 which is the name of the private library for this package. It may
4300 have a ~ on the front. It is up to the makefile to eventually create
4301 this directory while performing installation (with ~ substitution).
4302 The standard distribution will put nothing in this directory.
4303 After perl has been installed, users may install their own local
4304 architecture-dependent modules in this directory with
4305 MakeMaker Makefile.PL
4306 or equivalent. See INSTALL for details.
4308 sitearchexp (sitearch.U):
4309 This variable is the ~name expanded version of sitearch, so that you
4310 may use it directly in Makefiles or shell scripts.
4312 sitebin (sitebin.U):
4313 This variable holds the name of the directory in which the user wants
4314 to put add-on publicly executable files for the package in question. It
4315 is most often a local directory such as /usr/local/bin. Programs using
4316 this variable must be prepared to deal with ~name substitution.
4317 The standard distribution will put nothing in this directory.
4318 After perl has been installed, users may install their own local
4319 executables in this directory with
4320 MakeMaker Makefile.PL
4321 or equivalent. See INSTALL for details.
4323 sitebinexp (sitebin.U):
4324 This is the same as the sitebin variable, but is filename expanded at
4325 configuration time, for use in your makefiles.
4327 sitehtml1dir (sitehtml1dir.U):
4328 This variable contains the name of the directory in which site-specific
4329 html source pages are to be put. It is the responsibility of the
4330 Makefile.SH to get the value of this into the proper command.
4331 You must be prepared to do the ~name expansion yourself.
4332 The standard distribution will put nothing in this directory.
4333 After perl has been installed, users may install their own local
4334 html pages in this directory with
4335 MakeMaker Makefile.PL
4336 or equivalent. See INSTALL for details.
4338 sitehtml1direxp (sitehtml1dir.U):
4339 This variable is the same as the sitehtml1dir variable, but is filename
4340 expanded at configuration time, for convenient use in makefiles.
4342 sitehtml3dir (sitehtml3dir.U):
4343 This variable contains the name of the directory in which site-specific
4344 library html source pages are to be put. It is the responsibility of the
4345 Makefile.SH to get the value of this into the proper command.
4346 You must be prepared to do the ~name expansion yourself.
4347 The standard distribution will put nothing in this directory.
4348 After perl has been installed, users may install their own local
4349 library html pages in this directory with
4350 MakeMaker Makefile.PL
4351 or equivalent. See INSTALL for details.
4353 sitehtml3direxp (sitehtml3dir.U):
4354 This variable is the same as the sitehtml3dir variable, but is filename
4355 expanded at configuration time, for convenient use in makefiles.
4357 sitelib (sitelib.U):
4358 This variable contains the eventual value of the SITELIB symbol,
4359 which is the name of the private library for this package. It may
4360 have a ~ on the front. It is up to the makefile to eventually create
4361 this directory while performing installation (with ~ substitution).
4362 The standard distribution will put nothing in this directory.
4363 After perl has been installed, users may install their own local
4364 architecture-independent modules in this directory with
4365 MakeMaker Makefile.PL
4366 or equivalent. See INSTALL for details.
4368 sitelib_stem (sitelib.U):
4369 This variable is $sitelibexp with any trailing version-specific component
4370 removed. The elements in inc_version_list (inc_version_list.U) can
4371 be tacked onto this variable to generate a list of directories to search.
4373 sitelibexp (sitelib.U):
4374 This variable is the ~name expanded version of sitelib, so that you
4375 may use it directly in Makefiles or shell scripts.
4377 siteman1dir (siteman1dir.U):
4378 This variable contains the name of the directory in which site-specific
4379 manual source pages are to be put. It is the responsibility of the
4380 Makefile.SH to get the value of this into the proper command.
4381 You must be prepared to do the ~name expansion yourself.
4382 The standard distribution will put nothing in this directory.
4383 After perl has been installed, users may install their own local
4384 man1 pages in this directory with
4385 MakeMaker Makefile.PL
4386 or equivalent. See INSTALL for details.
4388 siteman1direxp (siteman1dir.U):
4389 This variable is the same as the siteman1dir variable, but is filename
4390 expanded at configuration time, for convenient use in makefiles.
4392 siteman3dir (siteman3dir.U):
4393 This variable contains the name of the directory in which site-specific
4394 library man source pages are to be put. It is the responsibility of the
4395 Makefile.SH to get the value of this into the proper command.
4396 You must be prepared to do the ~name expansion yourself.
4397 The standard distribution will put nothing in this directory.
4398 After perl has been installed, users may install their own local
4399 man3 pages in this directory with
4400 MakeMaker Makefile.PL
4401 or equivalent. See INSTALL for details.
4403 siteman3direxp (siteman3dir.U):
4404 This variable is the same as the siteman3dir variable, but is filename
4405 expanded at configuration time, for convenient use in makefiles.
4407 siteprefix (siteprefix.U):
4408 This variable holds the full absolute path of the directory below
4409 which the user will install add-on packages.
4410 See INSTALL for usage and examples.
4412 siteprefixexp (siteprefix.U):
4413 This variable holds the full absolute path of the directory below
4414 which the user will install add-on packages. Derived from siteprefix.
4416 sitescript (sitescript.U):
4417 This variable holds the name of the directory in which the user wants
4418 to put add-on publicly executable files for the package in question. It
4419 is most often a local directory such as /usr/local/bin. Programs using
4420 this variable must be prepared to deal with ~name substitution.
4421 The standard distribution will put nothing in this directory.
4422 After perl has been installed, users may install their own local
4423 scripts in this directory with
4424 MakeMaker Makefile.PL
4425 or equivalent. See INSTALL for details.
4427 sitescriptexp (sitescript.U):
4428 This is the same as the sitescript variable, but is filename expanded at
4429 configuration time, for use in your makefiles.
4431 sizesize (sizesize.U):
4432 This variable contains the size of a sizetype in bytes.
4434 sizetype (sizetype.U):
4435 This variable defines sizetype to be something like size_t,
4436 unsigned long, or whatever type is used to declare length
4437 parameters for string functions.
4440 This variable is defined but not used by Configure.
4441 The value is a plain '' and is not useful.
4444 This variable is defined but not used by Configure.
4445 The value is a plain '' and is not useful.
4448 This variable holds the extension used to identify shared libraries
4449 (also known as shared objects) on the system. Usually set to 'so'.
4451 sockethdr (d_socket.U):
4452 This variable has any cpp '-I' flags needed for socket support.
4454 socketlib (d_socket.U):
4455 This variable has the names of any libraries needed for socket support.
4457 socksizetype (socksizetype.U):
4458 This variable holds the type used for the size argument
4459 for various socket calls like accept. Usual values include
4460 socklen_t, size_t, and int.
4463 This variable is used internally by Configure to determine the
4464 full pathname (if any) of the sort program. After Configure runs,
4465 the value is reset to a plain "sort" and is not useful.
4467 spackage (package.U):
4468 This variable contains the name of the package being constructed,
4469 with the first letter uppercased, i.e. suitable for starting
4472 spitshell (spitshell.U):
4473 This variable contains the command necessary to spit out a runnable
4474 shell on this system. It is either cat or a grep '-v' for # comments.
4476 sPRId64 (quadfio.U):
4477 This variable, if defined, contains the string used by stdio to
4478 format 64-bit decimal numbers (format 'd') for output.
4480 sPRIeldbl (longdblfio.U):
4481 This variable, if defined, contains the string used by stdio to
4482 format long doubles (format 'e') for output.
4484 sPRIEUldbl (longdblfio.U):
4485 This variable, if defined, contains the string used by stdio to
4486 format long doubles (format 'E') for output.
4487 The 'U' in the name is to separate this from sPRIeldbl so that even
4488 case-blind systems can see the difference.
4490 sPRIfldbl (longdblfio.U):
4491 This variable, if defined, contains the string used by stdio to
4492 format long doubles (format 'f') for output.
4494 sPRIFUldbl (longdblfio.U):
4495 This variable, if defined, contains the string used by stdio to
4496 format long doubles (format 'F') for output.
4497 The 'U' in the name is to separate this from sPRIfldbl so that even
4498 case-blind systems can see the difference.
4500 sPRIgldbl (longdblfio.U):
4501 This variable, if defined, contains the string used by stdio to
4502 format long doubles (format 'g') for output.
4504 sPRIGUldbl (longdblfio.U):
4505 This variable, if defined, contains the string used by stdio to
4506 format long doubles (format 'G') for output.
4507 The 'U' in the name is to separate this from sPRIgldbl so that even
4508 case-blind systems can see the difference.
4510 sPRIi64 (quadfio.U):
4511 This variable, if defined, contains the string used by stdio to
4512 format 64-bit decimal numbers (format 'i') for output.
4514 sPRIo64 (quadfio.U):
4515 This variable, if defined, contains the string used by stdio to
4516 format 64-bit octal numbers (format 'o') for output.
4518 sPRIu64 (quadfio.U):
4519 This variable, if defined, contains the string used by stdio to
4520 format 64-bit unsigned decimal numbers (format 'u') for output.
4522 sPRIx64 (quadfio.U):
4523 This variable, if defined, contains the string used by stdio to
4524 format 64-bit hexadecimal numbers (format 'x') for output.
4526 sPRIXU64 (quadfio.U):
4527 This variable, if defined, contains the string used by stdio to
4528 format 64-bit hExADECimAl numbers (format 'X') for output.
4529 The 'U' in the name is to separate this from sPRIx64 so that even
4530 case-blind systems can see the difference.
4532 srand48_r_proto (d_srand48_r.U):
4533 This variable encodes the prototype of srand48_r.
4534 It is zero if d_srand48_r is undef, and one of the
4535 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4538 srandom_r_proto (d_srandom_r.U):
4539 This variable encodes the prototype of srandom_r.
4540 It is zero if d_srandom_r is undef, and one of the
4541 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4545 This variable holds the path to the package source. It is up to
4546 the Makefile to use this variable and set VPATH accordingly to
4547 find the sources remotely.
4549 sSCNfldbl (longdblfio.U):
4550 This variable, if defined, contains the string used by stdio to
4551 format long doubles (format 'f') for input.
4553 ssizetype (ssizetype.U):
4554 This variable defines ssizetype to be something like ssize_t,
4555 long or int. It is used by functions that return a count
4556 of bytes or an error condition. It must be a signed type.
4557 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4559 startperl (startperl.U):
4560 This variable contains the string to put on the front of a perl
4561 script to make sure (hopefully) that it runs with perl and not some
4562 shell. Of course, that leading line must be followed by the classical
4564 eval 'exec perl -S $0 ${1+"$@"}'
4565 if $running_under_some_shell;
4566 to guarantee perl startup should the shell execute the script. Note
4567 that this magic incatation is not understood by csh.
4569 startsh (startsh.U):
4570 This variable contains the string to put on the front of a shell
4571 script to make sure (hopefully) that it runs with sh and not some
4574 static_ext (Extensions.U):
4575 This variable holds a list of XS extension files we want to
4576 link statically into the package. It is used by Makefile.
4578 stdchar (stdchar.U):
4579 This variable conditionally defines STDCHAR to be the type of char
4580 used in stdio.h. It has the values "unsigned char" or "char".
4582 stdio_base (d_stdstdio.U):
4583 This variable defines how, given a FILE pointer, fp, to access the
4584 _base field (or equivalent) of stdio.h's FILE structure. This will
4585 be used to define the macro FILE_base(fp).
4587 stdio_bufsiz (d_stdstdio.U):
4588 This variable defines how, given a FILE pointer, fp, to determine
4589 the number of bytes store in the I/O buffer pointer to by the
4590 _base field (or equivalent) of stdio.h's FILE structure. This will
4591 be used to define the macro FILE_bufsiz(fp).
4593 stdio_cnt (d_stdstdio.U):
4594 This variable defines how, given a FILE pointer, fp, to access the
4595 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4596 be used to define the macro FILE_cnt(fp).
4598 stdio_filbuf (d_stdstdio.U):
4599 This variable defines how, given a FILE pointer, fp, to tell
4600 stdio to refill its internal buffers (?). This will
4601 be used to define the macro FILE_filbuf(fp).
4603 stdio_ptr (d_stdstdio.U):
4604 This variable defines how, given a FILE pointer, fp, to access the
4605 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4606 be used to define the macro FILE_ptr(fp).
4608 stdio_stream_array (stdio_streams.U):
4609 This variable tells the name of the array holding the stdio streams.
4610 Usual values include _iob, __iob, and __sF.
4612 strerror_r_proto (d_strerror_r.U):
4613 This variable encodes the prototype of strerror_r.
4614 It is zero if d_strerror_r is undef, and one of the
4615 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4618 strings (i_string.U):
4619 This variable holds the full path of the string header that will be
4620 used. Typically /usr/include/string.h or /usr/include/strings.h.
4623 This variable is defined but not used by Configure.
4624 The value is a plain '' and is not useful.
4626 subversion (patchlevel.U):
4627 The subversion level of this package.
4628 The value of subversion comes from the patchlevel.h file.
4629 In a version number such as 5.6.1, this is the "1".
4630 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4631 This is unique to perl.
4634 This variable holds the place where the manual is located on this
4635 system. It is not the place where the user wants to put his manual
4636 pages. Rather it is the place where Configure may look to find manual
4637 for unix commands (section 1 of the manual usually). See mansrc.
4640 This variable is defined but not used by Configure.
4641 The value is a plain '' and is not useful.
4644 This variable is defined but not used by Configure.
4645 The value is a plain '' and is not useful.
4647 targetarch (Cross.U):
4648 If cross-compiling, this variable contains the target architecture.
4649 If not, this will be empty.
4652 This variable is defined but not used by Configure.
4653 The value is a plain '' and is not useful.
4656 This variable is defined but not used by Configure.
4657 The value is a plain '' and is not useful.
4660 This variable is used internally by Configure to determine the
4661 full pathname (if any) of the test program. After Configure runs,
4662 the value is reset to a plain "test" and is not useful.
4664 timeincl (i_time.U):
4665 This variable holds the full path of the included time header(s).
4667 timetype (d_time.U):
4668 This variable holds the type returned by time(). It can be long,
4669 or time_t on BSD sites (in which case <sys/types.h> should be
4670 included). Anyway, the type Time_t should be used.
4672 tmpnam_r_proto (d_tmpnam_r.U):
4673 This variable encodes the prototype of tmpnam_r.
4674 It is zero if d_tmpnam_r is undef, and one of the
4675 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4679 This variable contains the command used by Configure
4680 to copy to from the target host. Useful and available
4681 only during Perl build.
4682 The string ':' if not cross-compiling.
4685 This variable is used internally by Configure to determine the
4686 full pathname (if any) of the touch program. After Configure runs,
4687 the value is reset to a plain "touch" and is not useful.
4690 This variable is used internally by Configure to determine the
4691 full pathname (if any) of the tr program. After Configure runs,
4692 the value is reset to a plain "tr" and is not useful.
4695 This variable contains the value to be passed to the tr(1)
4696 command to transliterate a newline. Typical values are
4697 '\012' and '\n'. This is needed for EBCDIC systems where
4698 newline is not necessarily '\012'.
4701 This variable is defined but not used by Configure.
4702 The value is a plain '' and is not useful.
4704 ttyname_r_proto (d_ttyname_r.U):
4705 This variable encodes the prototype of ttyname_r.
4706 It is zero if d_ttyname_r is undef, and one of the
4707 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4711 This variable is the size of an U16 in bytes.
4714 This variable contains the C type used for Perl's U16.
4717 This variable is the size of an U32 in bytes.
4720 This variable contains the C type used for Perl's U32.
4723 This variable is the size of an U64 in bytes.
4726 This variable contains the C type used for Perl's U64.
4729 This variable is the size of an U8 in bytes.
4732 This variable contains the C type used for Perl's U8.
4735 This variable contains the format string used for printing a Uid_t.
4737 uidsign (uidsign.U):
4738 This variable contains the signedness of a uidtype.
4739 1 for unsigned, -1 for signed.
4741 uidsize (uidsize.U):
4742 This variable contains the size of a uidtype in bytes.
4744 uidtype (uidtype.U):
4745 This variable defines Uid_t to be something like uid_t, int,
4746 ushort, or whatever type is used to declare user ids in the kernel.
4749 This variable is used internally by Configure to determine the
4750 full pathname (if any) of the uname program. After Configure runs,
4751 the value is reset to a plain "uname" and is not useful.
4754 This variable is used internally by Configure to determine the
4755 full pathname (if any) of the uniq program. After Configure runs,
4756 the value is reset to a plain "uniq" and is not useful.
4758 uquadtype (quadtype.U):
4759 This variable defines Uquad_t to be something like unsigned long,
4760 unsigned int, unsigned long long, uint64_t, or whatever type is
4761 used for 64-bit integers.
4763 use5005threads (usethreads.U):
4764 This variable conditionally defines the USE_5005THREADS symbol,
4765 and indicates that Perl should be built to use the 5.005-based
4766 threading implementation. Only valid up to 5.8.x.
4768 use64bitall (use64bits.U):
4769 This variable conditionally defines the USE_64_BIT_ALL symbol,
4770 and indicates that 64-bit integer types should be used
4771 when available. The maximal possible
4772 64-bitness is employed: LP64 or ILP64, meaning that you will
4773 be able to use more than 2 gigabytes of memory. This mode is
4774 even more binary incompatible than USE_64_BIT_INT. You may not
4775 be able to run the resulting executable in a 32-bit CPU at all or
4776 you may need at least to reboot your OS to 64-bit mode.
4778 use64bitint (use64bits.U):
4779 This variable conditionally defines the USE_64_BIT_INT symbol,
4780 and indicates that 64-bit integer types should be used
4781 when available. The minimal possible 64-bitness
4782 is employed, just enough to get 64-bit integers into Perl.
4783 This may mean using for example "long longs", while your memory
4784 may still be limited to 2 gigabytes.
4786 usecrosscompile (Cross.U):
4787 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4788 and indicates that Perl has been cross-compiled.
4791 This variable indicates if the system supports dynamic
4792 loading of some sort. See also dlsrc and dlobj.
4794 usedtrace (trace.U):
4795 This variable indicates whether we are compiling with dtrace support.
4798 usefaststdio (usefaststdio.U):
4799 This variable conditionally defines the USE_FAST_STDIO symbol,
4800 and indicates that Perl should be built to use 'fast stdio'.
4801 Defaults to define in Perls 5.8 and earlier, to undef later.
4803 useithreads (usethreads.U):
4804 This variable conditionally defines the USE_ITHREADS symbol,
4805 and indicates that Perl should be built to use the interpreter-based
4806 threading implementation.
4808 uselargefiles (uselfs.U):
4809 This variable conditionally defines the USE_LARGE_FILES symbol,
4810 and indicates that large file interfaces should be used when
4813 uselongdouble (uselongdbl.U):
4814 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4815 and indicates that long doubles should be used when available.
4817 usemallocwrap (mallocsrc.U):
4818 This variable contains y if we are wrapping malloc to prevent
4819 integer overflow during size calculations.
4821 usemorebits (usemorebits.U):
4822 This variable conditionally defines the USE_MORE_BITS symbol,
4823 and indicates that explicit 64-bit interfaces and long doubles
4824 should be used when available.
4826 usemultiplicity (usemultiplicity.U):
4827 This variable conditionally defines the MULTIPLICITY symbol,
4828 and indicates that Perl should be built to use multiplicity.
4830 usemymalloc (mallocsrc.U):
4831 This variable contains y if the malloc that comes with this package
4832 is desired over the system's version of malloc. People often include
4833 special versions of malloc for effiency, but such versions are often
4834 less portable. See also mallocsrc and mallocobj.
4835 If this is 'y', then -lmalloc is removed from $libs.
4838 This variable contains 'true' or 'false' depending whether the
4839 nm extraction is wanted or not.
4841 useopcode (Extensions.U):
4842 This variable holds either 'true' or 'false' to indicate
4843 whether the Opcode extension should be used. The sole
4844 use for this currently is to allow an easy mechanism
4845 for users to skip the Opcode extension from the Configure
4848 useperlio (useperlio.U):
4849 This variable conditionally defines the USE_PERLIO symbol,
4850 and indicates that the PerlIO abstraction should be
4853 useposix (Extensions.U):
4854 This variable holds either 'true' or 'false' to indicate
4855 whether the POSIX extension should be used. The sole
4856 use for this currently is to allow an easy mechanism
4857 for hints files to indicate that POSIX will not compile
4858 on a particular system.
4860 usereentrant (usethreads.U):
4861 This variable conditionally defines the USE_REENTRANT_API symbol,
4862 which indicates that the thread code may try to use the various
4863 _r versions of library functions. This is only potentially
4864 meaningful if usethreads is set and is very experimental, it is
4865 not even prompted for.
4867 userelocatableinc (bin.U):
4868 This variable is set to true to indicate that perl should relocate
4869 @INC entries at runtime based on the path to the perl binary.
4870 Any @INC paths starting ".../" are relocated relative to the directory
4871 containing the perl binary, and a logical cleanup of the path is then
4872 made around the join point (removing "dir/../" pairs)
4875 This variable is set to true when the user agrees to use sfio.
4876 It is set to false when sfio is not available or when the user
4877 explicitely requests not to use sfio. It is here primarily so
4878 that command-line settings can override the auto-detection of
4879 d_sfio without running into a "WHOA THERE".
4881 useshrplib (libperl.U):
4882 This variable is set to 'true' if the user wishes
4883 to build a shared libperl, and 'false' otherwise.
4885 usesitecustomize (d_sitecustomize.U):
4886 This variable is set to true when the user requires a mechanism that
4887 allows the sysadmin to add entries to @INC at runtime. This variable
4888 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
4890 usesocks (usesocks.U):
4891 This variable conditionally defines the USE_SOCKS symbol,
4892 and indicates that Perl should be built to use SOCKS.
4894 usethreads (usethreads.U):
4895 This variable conditionally defines the USE_THREADS symbol,
4896 and indicates that Perl should be built to use threads.
4898 usevendorprefix (vendorprefix.U):
4899 This variable tells whether the vendorprefix
4900 and consequently other vendor* paths are in use.
4902 usevfork (d_vfork.U):
4903 This variable is set to true when the user accepts to use vfork.
4904 It is set to false when no vfork is available or when the user
4905 explicitely requests not to use vfork.
4908 This variable holds the path of the include files, which is
4909 usually /usr/include. It is mainly used by other Configure units.
4912 This variable is defined but not used by Configure.
4913 The value is a plain '' and is not useful.
4915 uvoformat (perlxvf.U):
4916 This variable contains the format string used for printing
4917 a Perl UV as an unsigned octal integer.
4920 This variable is the size of a UV in bytes.
4923 This variable contains the C type used for Perl's UV.
4925 uvuformat (perlxvf.U):
4926 This variable contains the format string used for printing
4927 a Perl UV as an unsigned decimal integer.
4929 uvxformat (perlxvf.U):
4930 This variable contains the format string used for printing
4931 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4933 uvXUformat (perlxvf.U):
4934 This variable contains the format string used for printing
4935 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4937 vendorarch (vendorarch.U):
4938 This variable contains the value of the PERL_VENDORARCH symbol.
4939 It may have a ~ on the front.
4940 The standard distribution will put nothing in this directory.
4941 Vendors who distribute perl may wish to place their own
4942 architecture-dependent modules and extensions in this directory with
4943 MakeMaker Makefile.PL INSTALLDIRS=vendor
4944 or equivalent. See INSTALL for details.
4946 vendorarchexp (vendorarch.U):
4947 This variable is the ~name expanded version of vendorarch, so that you
4948 may use it directly in Makefiles or shell scripts.
4950 vendorbin (vendorbin.U):
4951 This variable contains the eventual value of the VENDORBIN symbol.
4952 It may have a ~ on the front.
4953 The standard distribution will put nothing in this directory.
4954 Vendors who distribute perl may wish to place additional
4955 binaries in this directory with
4956 MakeMaker Makefile.PL INSTALLDIRS=vendor
4957 or equivalent. See INSTALL for details.
4959 vendorbinexp (vendorbin.U):
4960 This variable is the ~name expanded version of vendorbin, so that you
4961 may use it directly in Makefiles or shell scripts.
4963 vendorhtml1dir (vendorhtml1dir.U):
4964 This variable contains the name of the directory for html
4965 pages. It may have a ~ on the front.
4966 The standard distribution will put nothing in this directory.
4967 Vendors who distribute perl may wish to place their own
4968 html pages in this directory with
4969 MakeMaker Makefile.PL INSTALLDIRS=vendor
4970 or equivalent. See INSTALL for details.
4972 vendorhtml1direxp (vendorhtml1dir.U):
4973 This variable is the ~name expanded version of vendorhtml1dir, so that you
4974 may use it directly in Makefiles or shell scripts.
4976 vendorhtml3dir (vendorhtml3dir.U):
4977 This variable contains the name of the directory for html
4978 library pages. It may have a ~ on the front.
4979 The standard distribution will put nothing in this directory.
4980 Vendors who distribute perl may wish to place their own
4981 html pages for modules and extensions in this directory with
4982 MakeMaker Makefile.PL INSTALLDIRS=vendor
4983 or equivalent. See INSTALL for details.
4985 vendorhtml3direxp (vendorhtml3dir.U):
4986 This variable is the ~name expanded version of vendorhtml3dir, so that you
4987 may use it directly in Makefiles or shell scripts.
4989 vendorlib (vendorlib.U):
4990 This variable contains the eventual value of the VENDORLIB symbol,
4991 which is the name of the private library for this package.
4992 The standard distribution will put nothing in this directory.
4993 Vendors who distribute perl may wish to place their own
4994 modules in this directory with
4995 MakeMaker Makefile.PL INSTALLDIRS=vendor
4996 or equivalent. See INSTALL for details.
4998 vendorlib_stem (vendorlib.U):
4999 This variable is $vendorlibexp with any trailing version-specific component
5000 removed. The elements in inc_version_list (inc_version_list.U) can
5001 be tacked onto this variable to generate a list of directories to search.
5003 vendorlibexp (vendorlib.U):
5004 This variable is the ~name expanded version of vendorlib, so that you
5005 may use it directly in Makefiles or shell scripts.
5007 vendorman1dir (vendorman1dir.U):
5008 This variable contains the name of the directory for man1
5009 pages. It may have a ~ on the front.
5010 The standard distribution will put nothing in this directory.
5011 Vendors who distribute perl may wish to place their own
5012 man1 pages in this directory with
5013 MakeMaker Makefile.PL INSTALLDIRS=vendor
5014 or equivalent. See INSTALL for details.
5016 vendorman1direxp (vendorman1dir.U):
5017 This variable is the ~name expanded version of vendorman1dir, so that you
5018 may use it directly in Makefiles or shell scripts.
5020 vendorman3dir (vendorman3dir.U):
5021 This variable contains the name of the directory for man3
5022 pages. It may have a ~ on the front.
5023 The standard distribution will put nothing in this directory.
5024 Vendors who distribute perl may wish to place their own
5025 man3 pages in this directory with
5026 MakeMaker Makefile.PL INSTALLDIRS=vendor
5027 or equivalent. See INSTALL for details.
5029 vendorman3direxp (vendorman3dir.U):
5030 This variable is the ~name expanded version of vendorman3dir, so that you
5031 may use it directly in Makefiles or shell scripts.
5033 vendorprefix (vendorprefix.U):
5034 This variable holds the full absolute path of the directory below
5035 which the vendor will install add-on packages.
5036 See INSTALL for usage and examples.
5038 vendorprefixexp (vendorprefix.U):
5039 This variable holds the full absolute path of the directory below
5040 which the vendor will install add-on packages. Derived from vendorprefix.
5042 vendorscript (vendorscript.U):
5043 This variable contains the eventual value of the VENDORSCRIPT symbol.
5044 It may have a ~ on the front.
5045 The standard distribution will put nothing in this directory.
5046 Vendors who distribute perl may wish to place additional
5047 executable scripts in this directory with
5048 MakeMaker Makefile.PL INSTALLDIRS=vendor
5049 or equivalent. See INSTALL for details.
5051 vendorscriptexp (vendorscript.U):
5052 This variable is the ~name expanded version of vendorscript, so that you
5053 may use it directly in Makefiles or shell scripts.
5055 version (patchlevel.U):
5056 The full version number of this package, such as 5.6.1 (or 5_6_1).
5057 This combines revision, patchlevel, and subversion to get the
5058 full version number, including any possible subversions.
5059 This is suitable for use as a directory name, and hence is
5060 filesystem dependent.
5062 version_patchlevel_string (patchlevel.U):
5063 This is a string combining version, subversion and
5064 perl_patchlevel (if perl_patchlevel is non-zero).
5065 It is typically something like
5066 'version 7 subversion 1' or
5067 'version 7 subversion 1 patchlevel 11224'
5068 It is computed here to avoid duplication of code in myconfig.SH
5071 versiononly (versiononly.U):
5072 If set, this symbol indicates that only the version-specific
5073 components of a perl installation should be installed.
5074 This may be useful for making a test installation of a new
5075 version without disturbing the existing installation.
5076 Setting versiononly is equivalent to setting installperl's -v option.
5077 In particular, the non-versioned scripts and programs such as
5078 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5079 (see INSTALL for a more complete list). Nor are the man
5081 Usually, this is undef.
5084 This variable is defined but not used by Configure.
5085 The value is a plain '' and is not useful.
5087 voidflags (voidflags.U):
5088 This variable contains the eventual value of the VOIDFLAGS symbol,
5089 which indicates how much support of the void type is given by this
5090 compiler. See VOIDFLAGS for more info.
5093 This variable holds extra path (space-separated) used to find
5094 libraries on this platform, for example CPU-specific libraries
5095 (on multi-CPU platforms) may be listed here.
5098 This variable holds the name of the compiler compiler we
5099 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5102 This variable contains any additional yacc flags desired by the
5103 user. It is up to the Makefile to use this.
5106 This variable is defined but not used by Configure.
5107 The value is a plain '' and is not useful.
5110 This variable is used internally by Configure to determine the
5111 full pathname (if any) of the zip program. After Configure runs,
5112 the value is reset to a plain "zip" and is not useful.