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 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_NDBM symbol, which
1434 indicates that both the ndbm.h include file and an appropriate ndbm
1435 library exist. Consult the different i_*ndbm variables
1436 to find out the actual include location. Sometimes, a system has the
1437 header file but not the library. This variable will only be set if
1438 the system has both.
1441 This variable conditionally defines the HAS_NICE symbol, which
1442 indicates to the C program that the nice() routine is available.
1444 d_nl_langinfo (d_nl_langinfo.U):
1445 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1446 indicates to the C program that the nl_langinfo() routine is available.
1448 d_nv_preserves_uv (perlxv.U):
1449 This variable indicates whether a variable of type nvtype
1450 can preserve all the bits a variable of type uvtype.
1452 d_nv_zero_is_allbits_zero (perlxv.U):
1453 This variable indicates whether a variable of type nvtype
1454 stores 0.0 in memory as all bits zero.
1456 d_off64_t (d_off64_t.U):
1457 This symbol will be defined if the C compiler supports off64_t.
1459 d_old_pthread_create_joinable (d_pthrattrj.U):
1460 This variable conditionally defines pthread_create_joinable.
1461 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1463 d_oldpthreads (usethreads.U):
1464 This variable conditionally defines the OLD_PTHREADS_API symbol,
1465 and indicates that Perl should be built to use the old
1466 draft POSIX threads API. This is only potentially meaningful if
1469 d_oldsock (d_socket.U):
1470 This variable conditionally defines the OLDSOCKET symbol, which
1471 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1473 d_open3 (d_open3.U):
1474 This variable conditionally defines the HAS_OPEN3 manifest constant,
1475 which indicates to the C program that the 3 argument version of
1476 the open(2) function is available.
1478 d_pathconf (d_pathconf.U):
1479 This variable conditionally defines the HAS_PATHCONF symbol, which
1480 indicates to the C program that the pathconf() routine is available
1481 to determine file-system related limits and options associated
1482 with a given filename.
1484 d_pause (d_pause.U):
1485 This variable conditionally defines the HAS_PAUSE symbol, which
1486 indicates to the C program that the pause() routine is available
1487 to suspend a process until a signal is received.
1489 d_perl_otherlibdirs (otherlibdirs.U):
1490 This variable conditionally defines PERL_OTHERLIBDIRS, which
1491 contains a colon-separated set of paths for the perl binary to
1492 include in @INC. See also otherlibdirs.
1494 d_phostname (d_gethname.U):
1495 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1496 contains the shell command which, when fed to popen(), may be
1497 used to derive the host name.
1500 This variable conditionally defines the HAS_PIPE symbol, which
1501 indicates to the C program that the pipe() routine is available
1502 to create an inter-process channel.
1505 This variable conditionally defines the HAS_POLL symbol, which
1506 indicates to the C program that the poll() routine is available
1507 to poll active file descriptors.
1509 d_portable (d_portable.U):
1510 This variable conditionally defines the PORTABLE symbol, which
1511 indicates to the C program that it should not assume that it is
1512 running on the machine it was compiled on.
1514 d_PRId64 (quadfio.U):
1515 This variable conditionally defines the PERL_PRId64 symbol, which
1516 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1518 d_PRIeldbl (longdblfio.U):
1519 This variable conditionally defines the PERL_PRIfldbl symbol, which
1520 indiciates that stdio has a symbol to print long doubles.
1522 d_PRIEUldbl (longdblfio.U):
1523 This variable conditionally defines the PERL_PRIfldbl symbol, which
1524 indiciates that stdio has a symbol to print long doubles.
1525 The 'U' in the name is to separate this from d_PRIeldbl so that even
1526 case-blind systems can see the difference.
1528 d_PRIfldbl (longdblfio.U):
1529 This variable conditionally defines the PERL_PRIfldbl symbol, which
1530 indiciates that stdio has a symbol to print long doubles.
1532 d_PRIFUldbl (longdblfio.U):
1533 This variable conditionally defines the PERL_PRIfldbl symbol, which
1534 indiciates that stdio has a symbol to print long doubles.
1535 The 'U' in the name is to separate this from d_PRIfldbl so that even
1536 case-blind systems can see the difference.
1538 d_PRIgldbl (longdblfio.U):
1539 This variable conditionally defines the PERL_PRIfldbl symbol, which
1540 indiciates that stdio has a symbol to print long doubles.
1542 d_PRIGUldbl (longdblfio.U):
1543 This variable conditionally defines the PERL_PRIfldbl symbol, which
1544 indiciates that stdio has a symbol to print long doubles.
1545 The 'U' in the name is to separate this from d_PRIgldbl so that even
1546 case-blind systems can see the difference.
1548 d_PRIi64 (quadfio.U):
1549 This variable conditionally defines the PERL_PRIi64 symbol, which
1550 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1552 d_printf_format_null (d_attribut.U):
1553 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
1554 indicates the C compiler allows printf-like formats to be null.
1556 d_PRIo64 (quadfio.U):
1557 This variable conditionally defines the PERL_PRIo64 symbol, which
1558 indiciates that stdio has a symbol to print 64-bit octal numbers.
1560 d_PRIu64 (quadfio.U):
1561 This variable conditionally defines the PERL_PRIu64 symbol, which
1562 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1565 d_PRIx64 (quadfio.U):
1566 This variable conditionally defines the PERL_PRIx64 symbol, which
1567 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1569 d_PRIXU64 (quadfio.U):
1570 This variable conditionally defines the PERL_PRIXU64 symbol, which
1571 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1572 The 'U' in the name is to separate this from d_PRIx64 so that even
1573 case-blind systems can see the difference.
1575 d_procselfexe (d_procselfexe.U):
1576 Defined if $procselfexe is symlink to the absolute
1577 pathname of the executing program.
1579 d_pseudofork (d_vfork.U):
1580 This variable conditionally defines the HAS_PSEUDOFORK symbol,
1581 which indicates that an emulation of the fork routine is available.
1583 d_pthread_atfork (d_pthread_atfork.U):
1584 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1585 which indicates to the C program that the pthread_atfork()
1586 routine is available.
1588 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1589 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1590 pthread_attr_setscope() is available to set the contention scope
1591 attribute of a thread attribute object.
1593 d_pthread_yield (d_pthread_y.U):
1594 This variable conditionally defines the HAS_PTHREAD_YIELD
1595 symbol if the pthread_yield routine is available to yield
1596 the execution of the current thread.
1599 This variable conditionally defines PWAGE, which indicates
1600 that struct passwd contains pw_age.
1602 d_pwchange (i_pwd.U):
1603 This variable conditionally defines PWCHANGE, which indicates
1604 that struct passwd contains pw_change.
1606 d_pwclass (i_pwd.U):
1607 This variable conditionally defines PWCLASS, which indicates
1608 that struct passwd contains pw_class.
1610 d_pwcomment (i_pwd.U):
1611 This variable conditionally defines PWCOMMENT, which indicates
1612 that struct passwd contains pw_comment.
1614 d_pwexpire (i_pwd.U):
1615 This variable conditionally defines PWEXPIRE, which indicates
1616 that struct passwd contains pw_expire.
1618 d_pwgecos (i_pwd.U):
1619 This variable conditionally defines PWGECOS, which indicates
1620 that struct passwd contains pw_gecos.
1622 d_pwpasswd (i_pwd.U):
1623 This variable conditionally defines PWPASSWD, which indicates
1624 that struct passwd contains pw_passwd.
1626 d_pwquota (i_pwd.U):
1627 This variable conditionally defines PWQUOTA, which indicates
1628 that struct passwd contains pw_quota.
1630 d_qgcvt (d_qgcvt.U):
1631 This variable conditionally defines the HAS_QGCVT symbol, which
1632 indicates to the C program that the qgcvt() routine is available.
1634 d_quad (quadtype.U):
1635 This variable, if defined, tells that there's a 64-bit integer type,
1638 d_random_r (d_random_r.U):
1639 This variable conditionally defines the HAS_RANDOM_R symbol,
1640 which indicates to the C program that the random_r()
1641 routine is available.
1643 d_readdir (d_readdir.U):
1644 This variable conditionally defines HAS_READDIR if readdir() is
1645 available to read directory entries.
1647 d_readdir64_r (d_readdir64_r.U):
1648 This variable conditionally defines the HAS_READDIR64_R symbol,
1649 which indicates to the C program that the readdir64_r()
1650 routine is available.
1652 d_readdir_r (d_readdir_r.U):
1653 This variable conditionally defines the HAS_READDIR_R symbol,
1654 which indicates to the C program that the readdir_r()
1655 routine is available.
1657 d_readlink (d_readlink.U):
1658 This variable conditionally defines the HAS_READLINK symbol, which
1659 indicates to the C program that the readlink() routine is available
1660 to read the value of a symbolic link.
1662 d_readv (d_readv.U):
1663 This variable conditionally defines the HAS_READV symbol, which
1664 indicates to the C program that the readv() routine is available.
1666 d_recvmsg (d_recvmsg.U):
1667 This variable conditionally defines the HAS_RECVMSG symbol, which
1668 indicates to the C program that the recvmsg() routine is available.
1670 d_rename (d_rename.U):
1671 This variable conditionally defines the HAS_RENAME symbol, which
1672 indicates to the C program that the rename() routine is available
1675 d_rewinddir (d_readdir.U):
1676 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1679 d_rmdir (d_rmdir.U):
1680 This variable conditionally defines HAS_RMDIR if rmdir() is
1681 available to remove directories.
1683 d_safebcpy (d_safebcpy.U):
1684 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1685 the bcopy() routine can do overlapping copies. Normally, you
1686 should probably use memmove().
1688 d_safemcpy (d_safemcpy.U):
1689 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1690 the memcpy() routine can do overlapping copies.
1691 For overlapping copies, memmove() should be used, if available.
1693 d_sanemcmp (d_sanemcmp.U):
1694 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1695 the memcpy() routine is available and can be used to compare relative
1696 magnitudes of chars with their high bits set.
1698 d_sbrkproto (d_sbrkproto.U):
1699 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1700 which indicates to the C program that the system provides
1701 a prototype for the sbrk() function. Otherwise, it is
1702 up to the program to supply one.
1704 d_scalbnl (d_scalbnl.U):
1705 This variable conditionally defines the HAS_SCALBNL symbol, which
1706 indicates to the C program that the scalbnl() routine is available.
1707 If ilogbl is also present we can emulate frexpl.
1709 d_sched_yield (d_pthread_y.U):
1710 This variable conditionally defines the HAS_SCHED_YIELD
1711 symbol if the sched_yield routine is available to yield
1712 the execution of the current thread.
1714 d_scm_rights (d_socket.U):
1715 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1716 which indicates that the SCM_RIGHTS is available. #ifdef is
1717 not enough because it may be an enum, glibc has been known to do this.
1719 d_SCNfldbl (longdblfio.U):
1720 This variable conditionally defines the PERL_PRIfldbl symbol, which
1721 indiciates that stdio has a symbol to scan long doubles.
1723 d_seekdir (d_readdir.U):
1724 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1727 d_select (d_select.U):
1728 This variable conditionally defines HAS_SELECT if select() is
1729 available to select active file descriptors. A <sys/time.h>
1730 inclusion may be necessary for the timeout field.
1733 This variable conditionally defines the HAS_SEM symbol, which
1734 indicates that the entire sem*(2) library is present.
1736 d_semctl (d_semctl.U):
1737 This variable conditionally defines the HAS_SEMCTL symbol, which
1738 indicates to the C program that the semctl() routine is available.
1740 d_semctl_semid_ds (d_union_semun.U):
1741 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1742 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1744 d_semctl_semun (d_union_semun.U):
1745 This variable conditionally defines USE_SEMCTL_SEMUN, which
1746 indicates that union semun is to be used for semctl IPC_STAT.
1748 d_semget (d_semget.U):
1749 This variable conditionally defines the HAS_SEMGET symbol, which
1750 indicates to the C program that the semget() routine is available.
1752 d_semop (d_semop.U):
1753 This variable conditionally defines the HAS_SEMOP symbol, which
1754 indicates to the C program that the semop() routine is available.
1756 d_sendmsg (d_sendmsg.U):
1757 This variable conditionally defines the HAS_SENDMSG symbol, which
1758 indicates to the C program that the sendmsg() routine is available.
1760 d_setegid (d_setegid.U):
1761 This variable conditionally defines the HAS_SETEGID symbol, which
1762 indicates to the C program that the setegid() routine is available
1763 to change the effective gid of the current program.
1765 d_seteuid (d_seteuid.U):
1766 This variable conditionally defines the HAS_SETEUID symbol, which
1767 indicates to the C program that the seteuid() routine is available
1768 to change the effective uid of the current program.
1770 d_setgrent (d_setgrent.U):
1771 This variable conditionally defines the HAS_SETGRENT symbol, which
1772 indicates to the C program that the setgrent() routine is available
1773 for initializing sequential access to the group database.
1775 d_setgrent_r (d_setgrent_r.U):
1776 This variable conditionally defines the HAS_SETGRENT_R symbol,
1777 which indicates to the C program that the setgrent_r()
1778 routine is available.
1780 d_setgrps (d_setgrps.U):
1781 This variable conditionally defines the HAS_SETGROUPS symbol, which
1782 indicates to the C program that the setgroups() routine is available
1783 to set the list of process groups.
1785 d_sethent (d_sethent.U):
1786 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1789 d_sethostent_r (d_sethostent_r.U):
1790 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1791 which indicates to the C program that the sethostent_r()
1792 routine is available.
1794 d_setitimer (d_setitimer.U):
1795 This variable conditionally defines the HAS_SETITIMER symbol, which
1796 indicates to the C program that the setitimer() routine is available.
1798 d_setlinebuf (d_setlnbuf.U):
1799 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1800 indicates to the C program that the setlinebuf() routine is available
1801 to change stderr or stdout from block-buffered or unbuffered to a
1804 d_setlocale (d_setlocale.U):
1805 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1806 available to handle locale-specific ctype implementations.
1808 d_setlocale_r (d_setlocale_r.U):
1809 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1810 which indicates to the C program that the setlocale_r()
1811 routine is available.
1813 d_setnent (d_setnent.U):
1814 This variable conditionally defines HAS_SETNETENT if setnetent() is
1817 d_setnetent_r (d_setnetent_r.U):
1818 This variable conditionally defines the HAS_SETNETENT_R symbol,
1819 which indicates to the C program that the setnetent_r()
1820 routine is available.
1822 d_setpent (d_setpent.U):
1823 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1826 d_setpgid (d_setpgid.U):
1827 This variable conditionally defines the HAS_SETPGID symbol if the
1828 setpgid(pid, gpid) function is available to set process group ID.
1830 d_setpgrp (d_setpgrp.U):
1831 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1832 available to set the current process group.
1834 d_setpgrp2 (d_setpgrp2.U):
1835 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1836 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1837 is available to set the current process group.
1839 d_setprior (d_setprior.U):
1840 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1841 is available to set a process's priority.
1843 d_setproctitle (d_setproctitle.U):
1844 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1845 which indicates to the C program that the setproctitle() routine
1848 d_setprotoent_r (d_setprotoent_r.U):
1849 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1850 which indicates to the C program that the setprotoent_r()
1851 routine is available.
1853 d_setpwent (d_setpwent.U):
1854 This variable conditionally defines the HAS_SETPWENT symbol, which
1855 indicates to the C program that the setpwent() routine is available
1856 for initializing sequential access to the passwd database.
1858 d_setpwent_r (d_setpwent_r.U):
1859 This variable conditionally defines the HAS_SETPWENT_R symbol,
1860 which indicates to the C program that the setpwent_r()
1861 routine is available.
1863 d_setregid (d_setregid.U):
1864 This variable conditionally defines HAS_SETREGID if setregid() is
1865 available to change the real and effective gid of the current
1868 d_setresgid (d_setregid.U):
1869 This variable conditionally defines HAS_SETRESGID if setresgid() is
1870 available to change the real, effective and saved gid of the current
1873 d_setresuid (d_setreuid.U):
1874 This variable conditionally defines HAS_SETREUID if setresuid() is
1875 available to change the real, effective and saved uid of the current
1878 d_setreuid (d_setreuid.U):
1879 This variable conditionally defines HAS_SETREUID if setreuid() is
1880 available to change the real and effective uid of the current
1883 d_setrgid (d_setrgid.U):
1884 This variable conditionally defines the HAS_SETRGID symbol, which
1885 indicates to the C program that the setrgid() routine is available
1886 to change the real gid of the current program.
1888 d_setruid (d_setruid.U):
1889 This variable conditionally defines the HAS_SETRUID symbol, which
1890 indicates to the C program that the setruid() routine is available
1891 to change the real uid of the current program.
1893 d_setsent (d_setsent.U):
1894 This variable conditionally defines HAS_SETSERVENT if setservent() is
1897 d_setservent_r (d_setservent_r.U):
1898 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1899 which indicates to the C program that the setservent_r()
1900 routine is available.
1902 d_setsid (d_setsid.U):
1903 This variable conditionally defines HAS_SETSID if setsid() is
1904 available to set the process group ID.
1906 d_setvbuf (d_setvbuf.U):
1907 This variable conditionally defines the HAS_SETVBUF symbol, which
1908 indicates to the C program that the setvbuf() routine is available
1909 to change buffering on an open stdio stream.
1912 This variable conditionally defines the USE_SFIO symbol,
1913 and indicates whether sfio is available (and should be used).
1916 This variable conditionally defines the HAS_SHM symbol, which
1917 indicates that the entire shm*(2) library is present.
1919 d_shmat (d_shmat.U):
1920 This variable conditionally defines the HAS_SHMAT symbol, which
1921 indicates to the C program that the shmat() routine is available.
1923 d_shmatprototype (d_shmat.U):
1924 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1925 symbol, which indicates that sys/shm.h has a prototype for
1928 d_shmctl (d_shmctl.U):
1929 This variable conditionally defines the HAS_SHMCTL symbol, which
1930 indicates to the C program that the shmctl() routine is available.
1932 d_shmdt (d_shmdt.U):
1933 This variable conditionally defines the HAS_SHMDT symbol, which
1934 indicates to the C program that the shmdt() routine is available.
1936 d_shmget (d_shmget.U):
1937 This variable conditionally defines the HAS_SHMGET symbol, which
1938 indicates to the C program that the shmget() routine is available.
1940 d_sigaction (d_sigaction.U):
1941 This variable conditionally defines the HAS_SIGACTION symbol, which
1942 indicates that the Vr4 sigaction() routine is available.
1944 d_signbit (d_signbit.U):
1945 This variable conditionally defines the HAS_SIGNBIT symbol, which
1946 indicates to the C program that the signbit() routine is available
1947 and safe to use with perl's intern NV type.
1949 d_sigprocmask (d_sigprocmask.U):
1950 This variable conditionally defines HAS_SIGPROCMASK
1951 if sigprocmask() is available to examine or change the signal mask
1952 of the calling process.
1954 d_sigsetjmp (d_sigsetjmp.U):
1955 This variable conditionally defines the HAS_SIGSETJMP symbol,
1956 which indicates that the sigsetjmp() routine is available to
1957 call setjmp() and optionally save the process's signal mask.
1959 d_sitearch (sitearch.U):
1960 This variable conditionally defines SITEARCH to hold the pathname
1961 of architecture-dependent library files for $package. If
1962 $sitearch is the same as $archlib, then this is set to undef.
1964 d_snprintf (d_snprintf.U):
1965 This variable conditionally defines the HAS_SNPRINTF symbol, which
1966 indicates to the C program that the snprintf () library function
1969 d_sockatmark (d_sockatmark.U):
1970 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1971 indicates to the C program that the sockatmark() routine is available.
1973 d_sockatmarkproto (d_sockatmarkproto.U):
1974 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1975 which indicates to the C program that the system provides
1976 a prototype for the sockatmark() function. Otherwise, it is
1977 up to the program to supply one.
1979 d_socket (d_socket.U):
1980 This variable conditionally defines HAS_SOCKET, which indicates
1981 that the BSD socket interface is supported.
1983 d_socklen_t (d_socklen_t.U):
1984 This symbol will be defined if the C compiler supports socklen_t.
1986 d_sockpair (d_socket.U):
1987 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1988 indicates that the BSD socketpair() is supported.
1990 d_socks5_init (d_socks5_init.U):
1991 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1992 indicates to the C program that the socks5_init() routine is available.
1994 d_sprintf_returns_strlen (d_sprintf_len.U):
1995 This variable defines whether sprintf returns the length of the string
1996 (as per the ANSI spec). Some C libraries retain compatibility with
1997 pre-ANSI C and return a pointer to the passed in buffer; for these
1998 this variable will be undef.
2000 d_sqrtl (d_sqrtl.U):
2001 This variable conditionally defines the HAS_SQRTL symbol, which
2002 indicates to the C program that the sqrtl() routine is available.
2004 d_srand48_r (d_srand48_r.U):
2005 This variable conditionally defines the HAS_SRAND48_R symbol,
2006 which indicates to the C program that the srand48_r()
2007 routine is available.
2009 d_srandom_r (d_srandom_r.U):
2010 This variable conditionally defines the HAS_SRANDOM_R symbol,
2011 which indicates to the C program that the srandom_r()
2012 routine is available.
2014 d_sresgproto (d_sresgproto.U):
2015 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
2016 which indicates to the C program that the system provides
2017 a prototype for the setresgid() function. Otherwise, it is
2018 up to the program to supply one.
2020 d_sresuproto (d_sresuproto.U):
2021 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2022 which indicates to the C program that the system provides
2023 a prototype for the setresuid() function. Otherwise, it is
2024 up to the program to supply one.
2026 d_statblks (d_statblks.U):
2027 This variable conditionally defines USE_STAT_BLOCKS
2028 if this system has a stat structure declaring
2029 st_blksize and st_blocks.
2031 d_statfs_f_flags (d_statfs_f_flags.U):
2032 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2033 symbol, which indicates to struct statfs from has f_flags member.
2034 This kind of struct statfs is coming from sys/mount.h (BSD),
2035 not from sys/statfs.h (SYSV).
2037 d_statfs_s (d_statfs_s.U):
2038 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2039 which indicates that the struct statfs is supported.
2041 d_statvfs (d_statvfs.U):
2042 This variable conditionally defines the HAS_STATVFS symbol, which
2043 indicates to the C program that the statvfs() routine is available.
2045 d_stdio_cnt_lval (d_stdstdio.U):
2046 This variable conditionally defines STDIO_CNT_LVALUE if the
2047 FILE_cnt macro can be used as an lvalue.
2049 d_stdio_ptr_lval (d_stdstdio.U):
2050 This variable conditionally defines STDIO_PTR_LVALUE if the
2051 FILE_ptr macro can be used as an lvalue.
2053 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2054 This symbol is defined if using the FILE_ptr macro as an lvalue
2055 to increase the pointer by n leaves File_cnt(fp) unchanged.
2057 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2058 This symbol is defined if using the FILE_ptr macro as an lvalue
2059 to increase the pointer by n has the side effect of decreasing the
2060 value of File_cnt(fp) by n.
2062 d_stdio_stream_array (stdio_streams.U):
2063 This variable tells whether there is an array holding
2066 d_stdiobase (d_stdstdio.U):
2067 This variable conditionally defines USE_STDIO_BASE if this system
2068 has a FILE structure declaring a usable _base field (or equivalent)
2071 d_stdstdio (d_stdstdio.U):
2072 This variable conditionally defines USE_STDIO_PTR if this system
2073 has a FILE structure declaring usable _ptr and _cnt fields (or
2074 equivalent) in stdio.h.
2076 d_strchr (d_strchr.U):
2077 This variable conditionally defines HAS_STRCHR if strchr() and
2078 strrchr() are available for string searching.
2080 d_strcoll (d_strcoll.U):
2081 This variable conditionally defines HAS_STRCOLL if strcoll() is
2082 available to compare strings using collating information.
2084 d_strctcpy (d_strctcpy.U):
2085 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2086 indicates to the C program that this C compiler knows how to copy
2089 d_strerrm (d_strerror.U):
2090 This variable holds what Strerrr is defined as to translate an error
2091 code condition into an error message string. It could be 'strerror'
2092 or a more complex macro emulating strrror with sys_errlist[], or the
2093 "unknown" string when both strerror and sys_errlist are missing.
2095 d_strerror (d_strerror.U):
2096 This variable conditionally defines HAS_STRERROR if strerror() is
2097 available to translate error numbers to strings.
2099 d_strerror_r (d_strerror_r.U):
2100 This variable conditionally defines the HAS_STRERROR_R symbol,
2101 which indicates to the C program that the strerror_r()
2102 routine is available.
2104 d_strftime (d_strftime.U):
2105 This variable conditionally defines the HAS_STRFTIME symbol, which
2106 indicates to the C program that the strftime() routine is available.
2108 d_strlcat (d_strlcat.U):
2109 This variable conditionally defines the HAS_STRLCAT symbol, which
2110 indicates to the C program that the strlcat () routine is available.
2112 d_strlcpy (d_strlcpy.U):
2113 This variable conditionally defines the HAS_STRLCPY symbol, which
2114 indicates to the C program that the strlcpy () routine is available.
2116 d_strtod (d_strtod.U):
2117 This variable conditionally defines the HAS_STRTOD symbol, which
2118 indicates to the C program that the strtod() routine is available
2119 to provide better numeric string conversion than atof().
2121 d_strtol (d_strtol.U):
2122 This variable conditionally defines the HAS_STRTOL symbol, which
2123 indicates to the C program that the strtol() routine is available
2124 to provide better numeric string conversion than atoi() and friends.
2126 d_strtold (d_strtold.U):
2127 This variable conditionally defines the HAS_STRTOLD symbol, which
2128 indicates to the C program that the strtold() routine is available.
2130 d_strtoll (d_strtoll.U):
2131 This variable conditionally defines the HAS_STRTOLL symbol, which
2132 indicates to the C program that the strtoll() routine is available.
2134 d_strtoq (d_strtoq.U):
2135 This variable conditionally defines the HAS_STRTOQ symbol, which
2136 indicates to the C program that the strtoq() routine is available.
2138 d_strtoul (d_strtoul.U):
2139 This variable conditionally defines the HAS_STRTOUL symbol, which
2140 indicates to the C program that the strtoul() routine is available
2141 to provide conversion of strings to unsigned long.
2143 d_strtoull (d_strtoull.U):
2144 This variable conditionally defines the HAS_STRTOULL symbol, which
2145 indicates to the C program that the strtoull() routine is available.
2147 d_strtouq (d_strtouq.U):
2148 This variable conditionally defines the HAS_STRTOUQ symbol, which
2149 indicates to the C program that the strtouq() routine is available.
2151 d_strxfrm (d_strxfrm.U):
2152 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2153 available to transform strings.
2155 d_suidsafe (d_dosuid.U):
2156 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2157 if setuid scripts can be secure. This test looks in /dev/fd/.
2159 d_symlink (d_symlink.U):
2160 This variable conditionally defines the HAS_SYMLINK symbol, which
2161 indicates to the C program that the symlink() routine is available
2162 to create symbolic links.
2164 d_syscall (d_syscall.U):
2165 This variable conditionally defines HAS_SYSCALL if syscall() is
2166 available call arbitrary system calls.
2168 d_syscallproto (d_syscallproto.U):
2169 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2170 which indicates to the C program that the system provides
2171 a prototype for the syscall() function. Otherwise, it is
2172 up to the program to supply one.
2174 d_sysconf (d_sysconf.U):
2175 This variable conditionally defines the HAS_SYSCONF symbol, which
2176 indicates to the C program that the sysconf() routine is available
2177 to determine system related limits and options.
2179 d_sysernlst (d_strerror.U):
2180 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2181 is available to translate error numbers to the symbolic name.
2183 d_syserrlst (d_strerror.U):
2184 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2185 available to translate error numbers to strings.
2187 d_system (d_system.U):
2188 This variable conditionally defines HAS_SYSTEM if system() is
2189 available to issue a shell command.
2191 d_tcgetpgrp (d_tcgtpgrp.U):
2192 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2193 indicates to the C program that the tcgetpgrp() routine is available.
2194 to get foreground process group ID.
2196 d_tcsetpgrp (d_tcstpgrp.U):
2197 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2198 indicates to the C program that the tcsetpgrp() routine is available
2199 to set foreground process group ID.
2201 d_telldir (d_readdir.U):
2202 This variable conditionally defines HAS_TELLDIR if telldir() is
2205 d_telldirproto (d_telldirproto.U):
2206 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2207 which indicates to the C program that the system provides
2208 a prototype for the telldir() function. Otherwise, it is
2209 up to the program to supply one.
2212 This variable conditionally defines the HAS_TIME symbol, which indicates
2213 that the time() routine exists. The time() routine is normaly
2214 provided on UNIX systems.
2216 d_times (d_times.U):
2217 This variable conditionally defines the HAS_TIMES symbol, which indicates
2218 that the times() routine exists. The times() routine is normaly
2219 provided on UNIX systems. You may have to include <sys/times.h>.
2221 d_tm_tm_gmtoff (i_time.U):
2222 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2223 indicates to the C program that the struct tm has the tm_gmtoff field.
2225 d_tm_tm_zone (i_time.U):
2226 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2227 indicates to the C program that the struct tm has the tm_zone field.
2229 d_tmpnam_r (d_tmpnam_r.U):
2230 This variable conditionally defines the HAS_TMPNAM_R symbol,
2231 which indicates to the C program that the tmpnam_r()
2232 routine is available.
2234 d_truncate (d_truncate.U):
2235 This variable conditionally defines HAS_TRUNCATE if truncate() is
2236 available to truncate files.
2238 d_ttyname_r (d_ttyname_r.U):
2239 This variable conditionally defines the HAS_TTYNAME_R symbol,
2240 which indicates to the C program that the ttyname_r()
2241 routine is available.
2243 d_tzname (d_tzname.U):
2244 This variable conditionally defines HAS_TZNAME if tzname[] is
2245 available to access timezone names.
2247 d_u32align (d_u32align.U):
2248 This variable tells whether you must access character data
2249 through U32-aligned pointers.
2251 d_ualarm (d_ualarm.U):
2252 This variable conditionally defines the HAS_UALARM symbol, which
2253 indicates to the C program that the ualarm() routine is available.
2255 d_umask (d_umask.U):
2256 This variable conditionally defines the HAS_UMASK symbol, which
2257 indicates to the C program that the umask() routine is available.
2258 to set and get the value of the file creation mask.
2260 d_uname (d_gethname.U):
2261 This variable conditionally defines the HAS_UNAME symbol, which
2262 indicates to the C program that the uname() routine may be
2263 used to derive the host name.
2265 d_union_semun (d_union_semun.U):
2266 This variable conditionally defines HAS_UNION_SEMUN if the
2267 union semun is defined by including <sys/sem.h>.
2269 d_unordered (d_unordered.U):
2270 This variable conditionally defines the HAS_UNORDERED symbol, which
2271 indicates to the C program that the unordered() routine is available.
2273 d_unsetenv (d_unsetenv.U):
2274 This variable conditionally defines the HAS_UNSETENV symbol, which
2275 indicates to the C program that the unsetenv () routine is available.
2277 d_usleep (d_usleep.U):
2278 This variable conditionally defines HAS_USLEEP if usleep() is
2279 available to do high granularity sleeps.
2281 d_usleepproto (d_usleepproto.U):
2282 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2283 which indicates to the C program that the system provides
2284 a prototype for the usleep() function. Otherwise, it is
2285 up to the program to supply one.
2287 d_ustat (d_ustat.U):
2288 This variable conditionally defines HAS_USTAT if ustat() is
2289 available to query file system statistics by dev_t.
2291 d_vendorarch (vendorarch.U):
2292 This variable conditionally defined PERL_VENDORARCH.
2294 d_vendorbin (vendorbin.U):
2295 This variable conditionally defines PERL_VENDORBIN.
2297 d_vendorlib (vendorlib.U):
2298 This variable conditionally defines PERL_VENDORLIB.
2300 d_vendorscript (vendorscript.U):
2301 This variable conditionally defines PERL_VENDORSCRIPT.
2303 d_vfork (d_vfork.U):
2304 This variable conditionally defines the HAS_VFORK symbol, which
2305 indicates the vfork() routine is available.
2307 d_void_closedir (d_closedir.U):
2308 This variable conditionally defines VOID_CLOSEDIR if closedir()
2309 does not return a value.
2311 d_voidsig (d_voidsig.U):
2312 This variable conditionally defines VOIDSIG if this system
2313 declares "void (*signal(...))()" in signal.h. The old way was to
2314 declare it as "int (*signal(...))()".
2316 d_voidtty (i_sysioctl.U):
2317 This variable conditionally defines USE_IOCNOTTY to indicate that the
2318 ioctl() call with TIOCNOTTY should be used to void tty association.
2319 Otherwise (on USG probably), it is enough to close the standard file
2320 decriptors and do a setpgrp().
2322 d_volatile (d_volatile.U):
2323 This variable conditionally defines the HASVOLATILE symbol, which
2324 indicates to the C program that this C compiler knows about the
2325 volatile declaration.
2327 d_vprintf (d_vprintf.U):
2328 This variable conditionally defines the HAS_VPRINTF symbol, which
2329 indicates to the C program that the vprintf() routine is available
2330 to printf with a pointer to an argument list.
2332 d_vsnprintf (d_snprintf.U):
2333 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2334 indicates to the C program that the vsnprintf () library function
2337 d_wait4 (d_wait4.U):
2338 This variable conditionally defines the HAS_WAIT4 symbol, which
2339 indicates the wait4() routine is available.
2341 d_waitpid (d_waitpid.U):
2342 This variable conditionally defines HAS_WAITPID if waitpid() is
2343 available to wait for child process.
2345 d_wcstombs (d_wcstombs.U):
2346 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2347 indicates to the C program that the wcstombs() routine is available
2348 to convert wide character strings to multibyte strings.
2350 d_wctomb (d_wctomb.U):
2351 This variable conditionally defines the HAS_WCTOMB symbol, which
2352 indicates to the C program that the wctomb() routine is available
2353 to convert a wide character to a multibyte.
2355 d_writev (d_writev.U):
2356 This variable conditionally defines the HAS_WRITEV symbol, which
2357 indicates to the C program that the writev() routine is available.
2360 This variable conditionally defines the symbol XENIX, which alerts
2361 the C program that it runs under Xenix.
2364 This variable is used internally by Configure to determine the
2365 full pathname (if any) of the date program. After Configure runs,
2366 the value is reset to a plain "date" and is not useful.
2368 db_hashtype (i_db.U):
2369 This variable contains the type of the hash structure element
2370 in the <db.h> header file. In older versions of DB, it was
2371 int, while in newer ones it is u_int32_t.
2373 db_prefixtype (i_db.U):
2374 This variable contains the type of the prefix structure element
2375 in the <db.h> header file. In older versions of DB, it was
2376 int, while in newer ones it is size_t.
2378 db_version_major (i_db.U):
2379 This variable contains the major version number of
2380 Berkeley DB found in the <db.h> header file.
2382 db_version_minor (i_db.U):
2383 This variable contains the minor version number of
2384 Berkeley DB found in the <db.h> header file.
2385 For DB version 1 this is always 0.
2387 db_version_patch (i_db.U):
2388 This variable contains the patch version number of
2389 Berkeley DB found in the <db.h> header file.
2390 For DB version 1 this is always 0.
2392 defvoidused (voidflags.U):
2393 This variable contains the default value of the VOIDUSED symbol (15).
2395 direntrytype (i_dirent.U):
2396 This symbol is set to 'struct direct' or 'struct dirent' depending on
2397 whether dirent is available or not. You should use this pseudo type to
2398 portably declare your directory entries.
2401 This variable contains the extension that is to be used for the
2402 dynamically loaded modules that perl generaties.
2405 This variable contains the name of the dynamic loading file that
2406 will be used with the package.
2408 doublesize (doublesize.U):
2409 This variable contains the value of the DOUBLESIZE symbol, which
2410 indicates to the C program how many bytes there are in a double.
2412 drand01 (randfunc.U):
2413 Indicates the macro to be used to generate normalized
2414 random numbers. Uses randfunc, often divided by
2415 (double) (((unsigned long) 1 << randbits)) in order to
2416 normalize the result.
2417 In C programs, the macro 'Drand01' is mapped to drand01.
2419 drand48_r_proto (d_drand48_r.U):
2420 This variable encodes the prototype of drand48_r.
2421 It is zero if d_drand48_r is undef, and one of the
2422 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2425 dtrace (usedtrace.U):
2426 This variable holds the location of the dtrace executable.
2428 dynamic_ext (Extensions.U):
2429 This variable holds a list of XS extension files we want to
2430 link dynamically into the package. It is used by Makefile.
2432 eagain (nblock_io.U):
2433 This variable bears the symbolic errno code set by read() when no
2434 data is present on the file and non-blocking I/O was enabled (otherwise,
2435 read() blocks naturally).
2438 This variable conditionally defines EBCDIC if this
2439 system uses EBCDIC encoding. Among other things, this
2440 means that the character ranges are not contiguous.
2444 This variable is used internally by Configure to determine the
2445 full pathname (if any) of the echo program. After Configure runs,
2446 the value is reset to a plain "echo" and is not useful.
2449 This variable is used internally by Configure to determine the
2450 full pathname (if any) of the egrep program. After Configure runs,
2451 the value is reset to a plain "egrep" and is not useful.
2454 This variable is defined but not used by Configure.
2455 The value is a plain '' and is not useful.
2457 endgrent_r_proto (d_endgrent_r.U):
2458 This variable encodes the prototype of endgrent_r.
2459 It is zero if d_endgrent_r is undef, and one of the
2460 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2463 endhostent_r_proto (d_endhostent_r.U):
2464 This variable encodes the prototype of endhostent_r.
2465 It is zero if d_endhostent_r is undef, and one of the
2466 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2469 endnetent_r_proto (d_endnetent_r.U):
2470 This variable encodes the prototype of endnetent_r.
2471 It is zero if d_endnetent_r is undef, and one of the
2472 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2475 endprotoent_r_proto (d_endprotoent_r.U):
2476 This variable encodes the prototype of endprotoent_r.
2477 It is zero if d_endprotoent_r is undef, and one of the
2478 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2481 endpwent_r_proto (d_endpwent_r.U):
2482 This variable encodes the prototype of endpwent_r.
2483 It is zero if d_endpwent_r is undef, and one of the
2484 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2487 endservent_r_proto (d_endservent_r.U):
2488 This variable encodes the prototype of endservent_r.
2489 It is zero if d_endservent_r is undef, and one of the
2490 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2494 When running under Eunice this variable contains a command which will
2495 convert a shell script to the proper form of text file for it to be
2496 executable by the shell. On other systems it is a no-op.
2499 This is an old synonym for _exe.
2502 This variable is used internally by Configure to determine the
2503 full pathname (if any) of the expr program. After Configure runs,
2504 the value is reset to a plain "expr" and is not useful.
2506 extensions (Extensions.U):
2507 This variable holds a list of all extension files (both XS and
2508 non-xs linked into the package. It is propagated to Config.pm
2509 and is typically used to test whether a particular extesion
2513 This variable holds a list of extra modules to install.
2515 fflushall (fflushall.U):
2516 This symbol, if defined, tells that to flush
2517 all pending stdio output one must loop through all
2518 the stdio file handles stored in an array and fflush them.
2519 Note that if fflushNULL is defined, fflushall will not
2520 even be probed for and will be left undefined.
2522 fflushNULL (fflushall.U):
2523 This symbol, if defined, tells that fflush(NULL) does flush
2524 all pending stdio output.
2527 This variable is defined but not used by Configure.
2528 The value is a plain '' and is not useful.
2530 firstmakefile (Unix.U):
2531 This variable defines the first file searched by make. On unix,
2532 it is makefile (then Makefile). On case-insensitive systems,
2533 it might be something else. This is only used to deal with
2534 convoluted make depend tricks.
2537 This variable is defined but not used by Configure.
2538 The value is a plain '' and is not useful.
2540 fpossize (fpossize.U):
2541 This variable contains the size of a fpostype in bytes.
2543 fpostype (fpostype.U):
2544 This variable defines Fpos_t to be something like fpos_t, long,
2545 uint, or whatever type is used to declare file positions in libc.
2547 freetype (mallocsrc.U):
2548 This variable contains the return type of free(). It is usually
2549 void, but occasionally int.
2552 This variable contains the command used by Configure
2553 to copy files from the target host. Useful and available
2554 only during Perl build.
2555 The string ':' if not cross-compiling.
2558 This variable contains the full pathname to 'ar', whether or
2559 not the user has specified 'portability'. This is only used
2563 This variable contains the full pathname to 'csh', whether or
2564 not the user has specified 'portability'. This is only used
2565 in the compiled C program, and we assume that all systems which
2566 can share this executable will have the same full pathname to
2569 full_sed (Loc_sed.U):
2570 This variable contains the full pathname to 'sed', whether or
2571 not the user has specified 'portability'. This is only used
2572 in the compiled C program, and we assume that all systems which
2573 can share this executable will have the same full pathname to
2576 gccansipedantic (gccvers.U):
2577 If GNU cc (gcc) is used, this variable will enable (if set) the
2578 -ansi and -pedantic ccflags for building core files (through
2579 cflags script). (See Porting/pumpkin.pod for full description).
2581 gccosandvers (gccvers.U):
2582 If GNU cc (gcc) is used, this variable holds the operating system
2583 and version used to compile gcc. It is set to '' if not gcc,
2584 or if nothing useful can be parsed as the os version.
2586 gccversion (gccvers.U):
2587 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2588 indicate whether the compiler is version 1 or 2. This is used in
2589 setting some of the default cflags. It is set to '' if not gcc.
2591 getgrent_r_proto (d_getgrent_r.U):
2592 This variable encodes the prototype of getgrent_r.
2593 It is zero if d_getgrent_r is undef, and one of the
2594 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2597 getgrgid_r_proto (d_getgrgid_r.U):
2598 This variable encodes the prototype of getgrgid_r.
2599 It is zero if d_getgrgid_r is undef, and one of the
2600 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2603 getgrnam_r_proto (d_getgrnam_r.U):
2604 This variable encodes the prototype of getgrnam_r.
2605 It is zero if d_getgrnam_r is undef, and one of the
2606 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2609 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2610 This variable encodes the prototype of gethostbyaddr_r.
2611 It is zero if d_gethostbyaddr_r is undef, and one of the
2612 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2615 gethostbyname_r_proto (d_gethostbyname_r.U):
2616 This variable encodes the prototype of gethostbyname_r.
2617 It is zero if d_gethostbyname_r is undef, and one of the
2618 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2621 gethostent_r_proto (d_gethostent_r.U):
2622 This variable encodes the prototype of gethostent_r.
2623 It is zero if d_gethostent_r is undef, and one of the
2624 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2627 getlogin_r_proto (d_getlogin_r.U):
2628 This variable encodes the prototype of getlogin_r.
2629 It is zero if d_getlogin_r is undef, and one of the
2630 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2633 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2634 This variable encodes the prototype of getnetbyaddr_r.
2635 It is zero if d_getnetbyaddr_r is undef, and one of the
2636 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2639 getnetbyname_r_proto (d_getnetbyname_r.U):
2640 This variable encodes the prototype of getnetbyname_r.
2641 It is zero if d_getnetbyname_r is undef, and one of the
2642 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2645 getnetent_r_proto (d_getnetent_r.U):
2646 This variable encodes the prototype of getnetent_r.
2647 It is zero if d_getnetent_r is undef, and one of the
2648 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2651 getprotobyname_r_proto (d_getprotobyname_r.U):
2652 This variable encodes the prototype of getprotobyname_r.
2653 It is zero if d_getprotobyname_r is undef, and one of the
2654 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2657 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2658 This variable encodes the prototype of getprotobynumber_r.
2659 It is zero if d_getprotobynumber_r is undef, and one of the
2660 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2663 getprotoent_r_proto (d_getprotoent_r.U):
2664 This variable encodes the prototype of getprotoent_r.
2665 It is zero if d_getprotoent_r is undef, and one of the
2666 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2669 getpwent_r_proto (d_getpwent_r.U):
2670 This variable encodes the prototype of getpwent_r.
2671 It is zero if d_getpwent_r is undef, and one of the
2672 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2675 getpwnam_r_proto (d_getpwnam_r.U):
2676 This variable encodes the prototype of getpwnam_r.
2677 It is zero if d_getpwnam_r is undef, and one of the
2678 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2681 getpwuid_r_proto (d_getpwuid_r.U):
2682 This variable encodes the prototype of getpwuid_r.
2683 It is zero if d_getpwuid_r is undef, and one of the
2684 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2687 getservbyname_r_proto (d_getservbyname_r.U):
2688 This variable encodes the prototype of getservbyname_r.
2689 It is zero if d_getservbyname_r is undef, and one of the
2690 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2693 getservbyport_r_proto (d_getservbyport_r.U):
2694 This variable encodes the prototype of getservbyport_r.
2695 It is zero if d_getservbyport_r is undef, and one of the
2696 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2699 getservent_r_proto (d_getservent_r.U):
2700 This variable encodes the prototype of getservent_r.
2701 It is zero if d_getservent_r is undef, and one of the
2702 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2705 getspnam_r_proto (d_getspnam_r.U):
2706 This variable encodes the prototype of getspnam_r.
2707 It is zero if d_getspnam_r is undef, and one of the
2708 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2712 This variable contains the format string used for printing a Gid_t.
2714 gidsign (gidsign.U):
2715 This variable contains the signedness of a gidtype.
2716 1 for unsigned, -1 for signed.
2718 gidsize (gidsize.U):
2719 This variable contains the size of a gidtype in bytes.
2721 gidtype (gidtype.U):
2722 This variable defines Gid_t to be something like gid_t, int,
2723 ushort, or whatever type is used to declare the return type
2724 of getgid(). Typically, it is the type of group ids in the kernel.
2727 This variable holds the general path (space-separated) used to
2728 find libraries. It may contain directories that do not exist on
2729 this platform, libpth is the cleaned-up version.
2732 This variable is used internally by Configure to determine the
2733 full pathname (if any) of the gmake program. After Configure runs,
2734 the value is reset to a plain "gmake" and is not useful.
2736 gmtime_r_proto (d_gmtime_r.U):
2737 This variable encodes the prototype of gmtime_r.
2738 It is zero if d_gmtime_r is undef, and one of the
2739 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2742 gnulibc_version (d_gnulibc.U):
2743 This variable contains the version number of the GNU C library.
2744 It is usually something like '2.2.5'. It is a plain '' if this
2745 is not the GNU C library, or if the version is unknown.
2748 This variable is used internally by Configure to determine the
2749 full pathname (if any) of the grep program. After Configure runs,
2750 the value is reset to a plain "grep" and is not useful.
2753 This variable contains a command that produces the text of the
2754 /etc/group file. This is normally "cat /etc/group", but can be
2755 "ypcat group" when NIS is used.
2756 On some systems, such as os390, there may be no equivalent
2757 command, in which case this variable is unset.
2759 groupstype (groupstype.U):
2760 This variable defines Groups_t to be something like gid_t, int,
2761 ushort, or whatever type is used for the second argument to
2762 getgroups() and setgroups(). Usually, this is the same as
2763 gidtype (gid_t), but sometimes it isn't.
2766 This variable is used internally by Configure to determine the
2767 full pathname (if any) of the gzip program. After Configure runs,
2768 the value is reset to a plain "gzip" and is not useful.
2770 h_fcntl (h_fcntl.U):
2771 This is variable gets set in various places to tell i_fcntl that
2772 <fcntl.h> should be included.
2774 h_sysfile (h_sysfile.U):
2775 This is variable gets set in various places to tell i_sys_file that
2776 <sys/file.h> should be included.
2779 Gives the type of hints used for previous answers. May be one of
2780 "default", "recommended" or "previous".
2783 This variable contains a command that produces the text of the
2784 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2785 "ypcat hosts" when NIS is used.
2786 On some systems, such as os390, there may be no equivalent
2787 command, in which case this variable is unset.
2789 html1dir (html1dir.U):
2790 This variable contains the name of the directory in which html
2791 source pages are to be put. This directory is for pages
2792 that describe whole programs, not libraries or modules. It
2793 is intended to correspond roughly to section 1 of the Unix
2796 html1direxp (html1dir.U):
2797 This variable is the same as the html1dir variable, but is filename
2798 expanded at configuration time, for convenient use in makefiles.
2800 html3dir (html3dir.U):
2801 This variable contains the name of the directory in which html
2802 source pages are to be put. This directory is for pages
2803 that describe libraries or modules. It is intended to
2804 correspond roughly to section 3 of the Unix manuals.
2806 html3direxp (html3dir.U):
2807 This variable is the same as the html3dir variable, but is filename
2808 expanded at configuration time, for convenient use in makefiles.
2811 This variable is the size of an I16 in bytes.
2814 This variable contains the C type used for Perl's I16.
2817 This variable is the size of an I32 in bytes.
2820 This variable contains the C type used for Perl's I32.
2823 This variable is the size of an I64 in bytes.
2826 This variable contains the C type used for Perl's I64.
2829 This variable is the size of an I8 in bytes.
2832 This variable contains the C type used for Perl's I8.
2834 i_arpainet (i_arpainet.U):
2835 This variable conditionally defines the I_ARPA_INET symbol,
2836 and indicates whether a C program should include <arpa/inet.h>.
2838 i_assert (i_assert.U):
2839 This variable conditionally defines the I_ASSERT symbol, which
2840 indicates to the C program that <assert.h> exists and could be
2843 i_bsdioctl (i_sysioctl.U):
2844 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2845 indicates to the C program that <sys/bsdioctl.h> exists and should
2848 i_crypt (i_crypt.U):
2849 This variable conditionally defines the I_CRYPT symbol, and indicates
2850 whether a C program should include <crypt.h>.
2853 This variable conditionally defines the I_DB symbol, and indicates
2854 whether a C program may include Berkeley's DB include file <db.h>.
2857 This variable conditionally defines the I_DBM symbol, which
2858 indicates to the C program that <dbm.h> exists and should
2861 i_dirent (i_dirent.U):
2862 This variable conditionally defines I_DIRENT, which indicates
2863 to the C program that it should include <dirent.h>.
2866 This variable conditionally defines the I_DLD symbol, which
2867 indicates to the C program that <dld.h> (GNU dynamic loading)
2868 exists and should be included.
2870 i_dlfcn (i_dlfcn.U):
2871 This variable conditionally defines the I_DLFCN symbol, which
2872 indicates to the C program that <dlfcn.h> exists and should
2875 i_fcntl (i_fcntl.U):
2876 This variable controls the value of I_FCNTL (which tells
2877 the C program to include <fcntl.h>).
2879 i_float (i_float.U):
2880 This variable conditionally defines the I_FLOAT symbol, and indicates
2881 whether a C program may include <float.h> to get symbols like DBL_MAX
2882 or DBL_MIN, i.e. machine dependent floating point values.
2885 This variable conditionally defines the I_FP symbol, and indicates
2886 whether a C program should include <fp.h>.
2888 i_fp_class (i_fp_class.U):
2889 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2890 whether a C program should include <fp_class.h>.
2893 This variable conditionally defines the I_GDBM symbol, which
2894 indicates to the C program that <gdbm.h> exists and should
2897 i_gdbm_ndbm (i_ndbm.U):
2898 This variable conditionally defines the I_GDBM_NDBM symbol, which
2899 indicates to the C program that <gdbm-ndbm.h> exists and should
2900 be included. This is the location of the ndbm.h compatibility file
2903 i_gdbmndbm (i_ndbm.U):
2904 This variable conditionally defines the I_GDBMNDBM symbol, which
2905 indicates to the C program that <gdbm/ndbm.h> exists and should
2906 be included. This was the location of the ndbm.h compatibility file
2910 This variable conditionally defines the I_GRP symbol, and indicates
2911 whether a C program should include <grp.h>.
2913 i_ieeefp (i_ieeefp.U):
2914 This variable conditionally defines the I_IEEEFP symbol, and indicates
2915 whether a C program should include <ieeefp.h>.
2917 i_inttypes (i_inttypes.U):
2918 This variable conditionally defines the I_INTTYPES symbol,
2919 and indicates whether a C program should include <inttypes.h>.
2921 i_langinfo (i_langinfo.U):
2922 This variable conditionally defines the I_LANGINFO symbol,
2923 and indicates whether a C program should include <langinfo.h>.
2925 i_libutil (i_libutil.U):
2926 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2927 whether a C program should include <libutil.h>.
2929 i_limits (i_limits.U):
2930 This variable conditionally defines the I_LIMITS symbol, and indicates
2931 whether a C program may include <limits.h> to get symbols like WORD_BIT
2934 i_locale (i_locale.U):
2935 This variable conditionally defines the I_LOCALE symbol,
2936 and indicates whether a C program should include <locale.h>.
2938 i_machcthr (i_machcthr.U):
2939 This variable conditionally defines the I_MACH_CTHREADS symbol,
2940 and indicates whether a C program should include <mach/cthreads.h>.
2942 i_malloc (i_malloc.U):
2943 This variable conditionally defines the I_MALLOC symbol, and indicates
2944 whether a C program should include <malloc.h>.
2946 i_mallocmalloc (i_mallocmalloc.U):
2947 This variable conditionally defines the I_MALLOCMALLOC symbol,
2948 and indicates whether a C program should include <malloc/malloc.h>.
2951 This variable conditionally defines the I_MATH symbol, and indicates
2952 whether a C program may include <math.h>.
2954 i_memory (i_memory.U):
2955 This variable conditionally defines the I_MEMORY symbol, and indicates
2956 whether a C program should include <memory.h>.
2958 i_mntent (i_mntent.U):
2959 This variable conditionally defines the I_MNTENT symbol, and indicates
2960 whether a C program should include <mntent.h>.
2963 This variable conditionally defines the I_NDBM symbol, which
2964 indicates to the C program that <ndbm.h> exists and should
2967 i_netdb (i_netdb.U):
2968 This variable conditionally defines the I_NETDB symbol, and indicates
2969 whether a C program should include <netdb.h>.
2971 i_neterrno (i_neterrno.U):
2972 This variable conditionally defines the I_NET_ERRNO symbol, which
2973 indicates to the C program that <net/errno.h> exists and should
2976 i_netinettcp (i_netinettcp.U):
2977 This variable conditionally defines the I_NETINET_TCP symbol,
2978 and indicates whether a C program should include <netinet/tcp.h>.
2981 This variable conditionally defines I_NETINET_IN, which indicates
2982 to the C program that it should include <netinet/in.h>. Otherwise,
2983 you may try <sys/in.h>.
2986 This variable conditionally defines the I_POLL symbol, and indicates
2987 whether a C program should include <poll.h>.
2990 This variable conditionally defines the I_PROT symbol, and indicates
2991 whether a C program should include <prot.h>.
2993 i_pthread (i_pthread.U):
2994 This variable conditionally defines the I_PTHREAD symbol,
2995 and indicates whether a C program should include <pthread.h>.
2998 This variable conditionally defines I_PWD, which indicates
2999 to the C program that it should include <pwd.h>.
3001 i_rpcsvcdbm (i_dbm.U):
3002 This variable conditionally defines the I_RPCSVC_DBM symbol, which
3003 indicates to the C program that <rpcsvc/dbm.h> exists and should
3004 be included. Some System V systems might need this instead of <dbm.h>.
3007 This variable conditionally defines the I_SFIO symbol,
3008 and indicates whether a C program should include <sfio.h>.
3010 i_sgtty (i_termio.U):
3011 This variable conditionally defines the I_SGTTY symbol, which
3012 indicates to the C program that it should include <sgtty.h> rather
3015 i_shadow (i_shadow.U):
3016 This variable conditionally defines the I_SHADOW symbol, and indicates
3017 whether a C program should include <shadow.h>.
3019 i_socks (i_socks.U):
3020 This variable conditionally defines the I_SOCKS symbol, and indicates
3021 whether a C program should include <socks.h>.
3023 i_stdarg (i_varhdr.U):
3024 This variable conditionally defines the I_STDARG symbol, which
3025 indicates to the C program that <stdarg.h> exists and should
3028 i_stddef (i_stddef.U):
3029 This variable conditionally defines the I_STDDEF symbol, which
3030 indicates to the C program that <stddef.h> exists and should
3033 i_stdlib (i_stdlib.U):
3034 This variable conditionally defines the I_STDLIB symbol, which
3035 indicates to the C program that <stdlib.h> exists and should
3038 i_string (i_string.U):
3039 This variable conditionally defines the I_STRING symbol, which
3040 indicates that <string.h> should be included rather than <strings.h>.
3042 i_sunmath (i_sunmath.U):
3043 This variable conditionally defines the I_SUNMATH symbol, and indicates
3044 whether a C program should include <sunmath.h>.
3046 i_sysaccess (i_sysaccess.U):
3047 This variable conditionally defines the I_SYS_ACCESS symbol,
3048 and indicates whether a C program should include <sys/access.h>.
3050 i_sysdir (i_sysdir.U):
3051 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3052 whether a C program should include <sys/dir.h>.
3054 i_sysfile (i_sysfile.U):
3055 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3056 whether a C program should include <sys/file.h> to get R_OK and friends.
3058 i_sysfilio (i_sysioctl.U):
3059 This variable conditionally defines the I_SYS_FILIO symbol, which
3060 indicates to the C program that <sys/filio.h> exists and should
3061 be included in preference to <sys/ioctl.h>.
3064 This variable conditionally defines I_SYS_IN, which indicates
3065 to the C program that it should include <sys/in.h> instead of
3068 i_sysioctl (i_sysioctl.U):
3069 This variable conditionally defines the I_SYS_IOCTL symbol, which
3070 indicates to the C program that <sys/ioctl.h> exists and should
3073 i_syslog (i_syslog.U):
3074 This variable conditionally defines the I_SYSLOG symbol,
3075 and indicates whether a C program should include <syslog.h>.
3077 i_sysmman (i_sysmman.U):
3078 This variable conditionally defines the I_SYS_MMAN symbol, and
3079 indicates whether a C program should include <sys/mman.h>.
3081 i_sysmode (i_sysmode.U):
3082 This variable conditionally defines the I_SYSMODE symbol,
3083 and indicates whether a C program should include <sys/mode.h>.
3085 i_sysmount (i_sysmount.U):
3086 This variable conditionally defines the I_SYSMOUNT symbol,
3087 and indicates whether a C program should include <sys/mount.h>.
3089 i_sysndir (i_sysndir.U):
3090 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3091 whether a C program should include <sys/ndir.h>.
3093 i_sysparam (i_sysparam.U):
3094 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3095 whether a C program should include <sys/param.h>.
3097 i_syspoll (i_syspoll.U):
3098 This variable conditionally defines the I_SYS_POLL symbol, which
3099 indicates to the C program that it should include <sys/poll.h>.
3101 i_sysresrc (i_sysresrc.U):
3102 This variable conditionally defines the I_SYS_RESOURCE symbol,
3103 and indicates whether a C program should include <sys/resource.h>.
3105 i_syssecrt (i_syssecrt.U):
3106 This variable conditionally defines the I_SYS_SECURITY symbol,
3107 and indicates whether a C program should include <sys/security.h>.
3109 i_sysselct (i_sysselct.U):
3110 This variable conditionally defines I_SYS_SELECT, which indicates
3111 to the C program that it should include <sys/select.h> in order to
3112 get the definition of struct timeval.
3114 i_syssockio (i_sysioctl.U):
3115 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3116 C program that socket ioctl codes may be found in <sys/sockio.h>
3117 instead of <sys/ioctl.h>.
3119 i_sysstat (i_sysstat.U):
3120 This variable conditionally defines the I_SYS_STAT symbol,
3121 and indicates whether a C program should include <sys/stat.h>.
3123 i_sysstatfs (i_sysstatfs.U):
3124 This variable conditionally defines the I_SYSSTATFS symbol,
3125 and indicates whether a C program should include <sys/statfs.h>.
3127 i_sysstatvfs (i_sysstatvfs.U):
3128 This variable conditionally defines the I_SYSSTATVFS symbol,
3129 and indicates whether a C program should include <sys/statvfs.h>.
3131 i_systime (i_time.U):
3132 This variable conditionally defines I_SYS_TIME, which indicates
3133 to the C program that it should include <sys/time.h>.
3135 i_systimek (i_time.U):
3136 This variable conditionally defines I_SYS_TIME_KERNEL, which
3137 indicates to the C program that it should include <sys/time.h>
3138 with KERNEL defined.
3140 i_systimes (i_systimes.U):
3141 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3142 whether a C program should include <sys/times.h>.
3144 i_systypes (i_systypes.U):
3145 This variable conditionally defines the I_SYS_TYPES symbol,
3146 and indicates whether a C program should include <sys/types.h>.
3148 i_sysuio (i_sysuio.U):
3149 This variable conditionally defines the I_SYSUIO symbol, and indicates
3150 whether a C program should include <sys/uio.h>.
3152 i_sysun (i_sysun.U):
3153 This variable conditionally defines I_SYS_UN, which indicates
3154 to the C program that it should include <sys/un.h> to get UNIX
3155 domain socket definitions.
3157 i_sysutsname (i_sysutsname.U):
3158 This variable conditionally defines the I_SYSUTSNAME symbol,
3159 and indicates whether a C program should include <sys/utsname.h>.
3161 i_sysvfs (i_sysvfs.U):
3162 This variable conditionally defines the I_SYSVFS symbol,
3163 and indicates whether a C program should include <sys/vfs.h>.
3165 i_syswait (i_syswait.U):
3166 This variable conditionally defines I_SYS_WAIT, which indicates
3167 to the C program that it should include <sys/wait.h>.
3169 i_termio (i_termio.U):
3170 This variable conditionally defines the I_TERMIO symbol, which
3171 indicates to the C program that it should include <termio.h> rather
3174 i_termios (i_termio.U):
3175 This variable conditionally defines the I_TERMIOS symbol, which
3176 indicates to the C program that the POSIX <termios.h> file is
3180 This variable conditionally defines I_TIME, which indicates
3181 to the C program that it should include <time.h>.
3183 i_unistd (i_unistd.U):
3184 This variable conditionally defines the I_UNISTD symbol, and indicates
3185 whether a C program should include <unistd.h>.
3187 i_ustat (i_ustat.U):
3188 This variable conditionally defines the I_USTAT symbol, and indicates
3189 whether a C program should include <ustat.h>.
3191 i_utime (i_utime.U):
3192 This variable conditionally defines the I_UTIME symbol, and indicates
3193 whether a C program should include <utime.h>.
3195 i_values (i_values.U):
3196 This variable conditionally defines the I_VALUES symbol, and indicates
3197 whether a C program may include <values.h> to get symbols like MAXLONG
3200 i_varargs (i_varhdr.U):
3201 This variable conditionally defines I_VARARGS, which indicates
3202 to the C program that it should include <varargs.h>.
3204 i_varhdr (i_varhdr.U):
3205 Contains the name of the header to be included to get va_dcl definition.
3206 Typically one of varargs.h or stdarg.h.
3208 i_vfork (i_vfork.U):
3209 This variable conditionally defines the I_VFORK symbol, and indicates
3210 whether a C program should include vfork.h.
3212 ignore_versioned_solibs (libs.U):
3213 This variable should be non-empty if non-versioned shared
3214 libraries (libfoo.so.x.y) are to be ignored (because they
3215 cannot be linked against).
3217 inc_version_list (inc_version_list.U):
3218 This variable specifies the list of subdirectories in over
3219 which perl.c:incpush() and lib/lib.pm will automatically
3220 search when adding directories to @INC. The elements in
3221 the list are separated by spaces. This is only useful
3222 if you have a perl library directory tree structured like the
3223 default one. See INSTALL for how this works. The versioned
3224 site_perl directory was introduced in 5.005, so that is the
3225 lowest possible value.
3227 This list includes architecture-dependent directories back to
3228 version $api_versionstring (e.g. 5.5.640) and
3229 architecture-independent directories all the way back to
3232 inc_version_list_init (inc_version_list.U):
3233 This variable holds the same list as inc_version_list, but
3234 each item is enclosed in double quotes and separated by commas,
3235 suitable for use in the PERL_INC_VERSION_LIST initialization.
3238 This variable must preceed the normal include path to get hte
3239 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3240 Value can be "" or "/bsd43" on mips.
3243 This variable is defined but not used by Configure.
3244 The value is a plain '' and is not useful.
3246 initialinstalllocation (bin.U):
3247 When userelocatableinc is true, this variable holds the location
3248 that make install should copy the perl binary to, with all the
3249 run-time relocatable paths calculated from this at install time.
3250 When used, it is initialised to the original value of binexp, and
3251 then binexp is set to '.../', as the other binaries are found
3252 relative to the perl binary.
3254 installarchlib (archlib.U):
3255 This variable is really the same as archlibexp but may differ on
3256 those systems using AFS. For extra portability, only this variable
3257 should be used in makefiles.
3260 This variable is the same as binexp unless AFS is running in which case
3261 the user is explicitely prompted for it. This variable should always
3262 be used in your makefiles for maximum portability.
3264 installhtml1dir (html1dir.U):
3265 This variable is really the same as html1direxp, unless you are
3266 using a different installprefix. For extra portability, you
3267 should only use this variable within your makefiles.
3269 installhtml3dir (html3dir.U):
3270 This variable is really the same as html3direxp, unless you are
3271 using a different installprefix. For extra portability, you
3272 should only use this variable within your makefiles.
3274 installman1dir (man1dir.U):
3275 This variable is really the same as man1direxp, unless you are using
3276 AFS in which case it points to the read/write location whereas
3277 man1direxp only points to the read-only access location. For extra
3278 portability, you should only use this variable within your makefiles.
3280 installman3dir (man3dir.U):
3281 This variable is really the same as man3direxp, unless you are using
3282 AFS in which case it points to the read/write location whereas
3283 man3direxp only points to the read-only access location. For extra
3284 portability, you should only use this variable within your makefiles.
3286 installprefix (installprefix.U):
3287 This variable holds the name of the directory below which
3288 "make install" will install the package. For most users, this
3289 is the same as prefix. However, it is useful for
3290 installing the software into a different (usually temporary)
3291 location after which it can be bundled up and moved somehow
3292 to the final location specified by prefix.
3294 installprefixexp (installprefix.U):
3295 This variable holds the full absolute path of installprefix
3296 with all ~-expansion done.
3298 installprivlib (privlib.U):
3299 This variable is really the same as privlibexp but may differ on
3300 those systems using AFS. For extra portability, only this variable
3301 should be used in makefiles.
3303 installscript (scriptdir.U):
3304 This variable is usually the same as scriptdirexp, unless you are on
3305 a system running AFS, in which case they may differ slightly. You
3306 should always use this variable within your makefiles for portability.
3308 installsitearch (sitearch.U):
3309 This variable is really the same as sitearchexp but may differ on
3310 those systems using AFS. For extra portability, only this variable
3311 should be used in makefiles.
3313 installsitebin (sitebin.U):
3314 This variable is usually the same as sitebinexp, unless you are on
3315 a system running AFS, in which case they may differ slightly. You
3316 should always use this variable within your makefiles for portability.
3318 installsitehtml1dir (sitehtml1dir.U):
3319 This variable is really the same as sitehtml1direxp, unless you are using
3320 AFS in which case it points to the read/write location whereas
3321 html1direxp only points to the read-only access location. For extra
3322 portability, you should only use this variable within your makefiles.
3324 installsitehtml3dir (sitehtml3dir.U):
3325 This variable is really the same as sitehtml3direxp, unless you are using
3326 AFS in which case it points to the read/write location whereas
3327 html3direxp only points to the read-only access location. For extra
3328 portability, you should only use this variable within your makefiles.
3330 installsitelib (sitelib.U):
3331 This variable is really the same as sitelibexp but may differ on
3332 those systems using AFS. For extra portability, only this variable
3333 should be used in makefiles.
3335 installsiteman1dir (siteman1dir.U):
3336 This variable is really the same as siteman1direxp, unless you are using
3337 AFS in which case it points to the read/write location whereas
3338 man1direxp only points to the read-only access location. For extra
3339 portability, you should only use this variable within your makefiles.
3341 installsiteman3dir (siteman3dir.U):
3342 This variable is really the same as siteman3direxp, unless you are using
3343 AFS in which case it points to the read/write location whereas
3344 man3direxp only points to the read-only access location. For extra
3345 portability, you should only use this variable within your makefiles.
3347 installsitescript (sitescript.U):
3348 This variable is usually the same as sitescriptexp, unless you are on
3349 a system running AFS, in which case they may differ slightly. You
3350 should always use this variable within your makefiles for portability.
3352 installstyle (installstyle.U):
3353 This variable describes the "style" of the perl installation.
3354 This is intended to be useful for tools that need to
3355 manipulate entire perl distributions. Perl itself doesn't use
3356 this to find its libraries -- the library directories are
3357 stored directly in Config.pm. Currently, there are only two
3358 styles: "lib" and "lib/perl5". The default library locations
3359 (e.g. privlib, sitelib) are either $prefix/lib or
3360 $prefix/lib/perl5. The former is useful if $prefix is a
3361 directory dedicated to perl (e.g. /opt/perl), while the latter
3362 is useful if $prefix is shared by many packages, e.g. if
3365 Unfortunately, while this "style" variable is used to set
3366 defaults for all three directory hierarchies (core, vendor, and
3367 site), there is no guarantee that the same style is actually
3368 appropriate for all those directories. For example, $prefix
3369 might be /opt/perl, but $siteprefix might be /usr/local.
3370 (Perhaps, in retrospect, the "lib" style should never have been
3371 supported, but it did seem like a nice idea at the time.)
3373 The situation is even less clear for tools such as MakeMaker
3374 that can be used to install additional modules into
3375 non-standard places. For example, if a user intends to install
3376 a module into a private directory (perhaps by setting PREFIX on
3377 the Makefile.PL command line), then there is no reason to
3378 assume that the Configure-time $installstyle setting will be
3379 relevant for that PREFIX.
3381 This may later be extended to include other information, so
3382 be careful with pattern-matching on the results.
3384 For compatibility with perl5.005 and earlier, the default
3385 setting is based on whether or not $prefix contains the string
3388 installusrbinperl (instubperl.U):
3389 This variable tells whether Perl should be installed also as
3390 /usr/bin/perl in addition to
3393 installvendorarch (vendorarch.U):
3394 This variable is really the same as vendorarchexp but may differ on
3395 those systems using AFS. For extra portability, only this variable
3396 should be used in makefiles.
3398 installvendorbin (vendorbin.U):
3399 This variable is really the same as vendorbinexp but may differ on
3400 those systems using AFS. For extra portability, only this variable
3401 should be used in makefiles.
3403 installvendorhtml1dir (vendorhtml1dir.U):
3404 This variable is really the same as vendorhtml1direxp but may differ on
3405 those systems using AFS. For extra portability, only this variable
3406 should be used in makefiles.
3408 installvendorhtml3dir (vendorhtml3dir.U):
3409 This variable is really the same as vendorhtml3direxp but may differ on
3410 those systems using AFS. For extra portability, only this variable
3411 should be used in makefiles.
3413 installvendorlib (vendorlib.U):
3414 This variable is really the same as vendorlibexp but may differ on
3415 those systems using AFS. For extra portability, only this variable
3416 should be used in makefiles.
3418 installvendorman1dir (vendorman1dir.U):
3419 This variable is really the same as vendorman1direxp but may differ on
3420 those systems using AFS. For extra portability, only this variable
3421 should be used in makefiles.
3423 installvendorman3dir (vendorman3dir.U):
3424 This variable is really the same as vendorman3direxp but may differ on
3425 those systems using AFS. For extra portability, only this variable
3426 should be used in makefiles.
3428 installvendorscript (vendorscript.U):
3429 This variable is really the same as vendorscriptexp but may differ on
3430 those systems using AFS. For extra portability, only this variable
3431 should be used in makefiles.
3433 intsize (intsize.U):
3434 This variable contains the value of the INTSIZE symbol, which
3435 indicates to the C program how many bytes there are in an int.
3437 issymlink (issymlink.U):
3438 This variable holds the test command to test for a symbolic link
3439 (if they are supported). Typical values include 'test -h' and
3442 ivdformat (perlxvf.U):
3443 This variable contains the format string used for printing
3444 a Perl IV as a signed decimal integer.
3447 This variable is the size of an IV in bytes.
3450 This variable contains the C type used for Perl's IV.
3452 known_extensions (Extensions.U):
3453 This variable holds a list of all XS extensions included in
3457 This variable is defined but not used by Configure.
3458 The value is a plain '' and is not useful.
3461 This variable indicates the program to be used to link
3462 libraries for dynamic loading. On some systems, it is 'ld'.
3463 On ELF systems, it should be $cc. Mostly, we'll try to respect
3464 the hint file setting.
3466 lddlflags (dlsrc.U):
3467 This variable contains any special flags that might need to be
3468 passed to $ld to create a shared library suitable for dynamic
3469 loading. It is up to the makefile to use it. For hpux, it
3470 should be '-b'. For sunos 4.1, it is empty.
3472 ldflags (ccflags.U):
3473 This variable contains any additional C loader flags desired by
3474 the user. It is up to the Makefile to use this.
3476 ldflags_uselargefiles (uselfs.U):
3477 This variable contains the loader flags needed by large file builds
3478 and added to ldflags by hints files.
3480 ldlibpthname (libperl.U):
3481 This variable holds the name of the shared library
3482 search path, often LD_LIBRARY_PATH. To get an empty
3483 string, the hints file must set this to 'none'.
3486 This variable is used internally by Configure to determine the
3487 full pathname (if any) of the less program. After Configure runs,
3488 the value is reset to a plain "less" and is not useful.
3491 This is an old synonym for _a.
3494 This variable contains the location of the C library.
3496 libperl (libperl.U):
3497 The perl executable is obtained by linking perlmain.c with
3498 libperl, any static extensions (usually just DynaLoader),
3499 and any other libraries needed on this system. libperl
3500 is usually libperl.a, but can also be libperl.so.xxx if
3501 the user wishes to build a perl executable with a shared
3505 This variable holds the general path (space-separated) used to find
3506 libraries. It is intended to be used by other units.
3509 This variable holds the additional libraries we want to use.
3510 It is up to the Makefile to deal with it. The list can be empty.
3513 This variable holds the directory names aka dirnames of the libraries
3514 we found and accepted, duplicates are removed.
3517 This variable holds the filenames aka basenames of the libraries
3518 we found and accepted.
3521 This variable holds the full pathnames of the libraries
3522 we found and accepted.
3525 This variable holds the directory names probed for libraries.
3527 libswanted (Myinit.U):
3528 This variable holds a list of all the libraries we want to
3529 search. The order is chosen to pick up the c library
3530 ahead of ucb or bsd libraries for SVR4.
3532 libswanted_uselargefiles (uselfs.U):
3533 This variable contains the libraries needed by large file builds
3534 and added to ldflags by hints files. It is a space separated list
3535 of the library names without the "lib" prefix or any suffix, just
3539 This variable is defined but not used by Configure.
3540 The value is a plain '' and is not useful.
3543 This variable is defined but not used by Configure.
3544 The value is a plain '' and is not useful.
3546 lkflags (ccflags.U):
3547 This variable contains any additional C partial linker flags desired by
3548 the user. It is up to the Makefile to use this.
3551 This variable is used internally by Configure to determine the
3552 full pathname (if any) of the ln program. After Configure runs,
3553 the value is reset to a plain "ln" and is not useful.
3556 This variable holds the name of the command to make
3557 symbolic links (if they are supported). It can be used
3558 in the Makefile. It is either 'ln -s' or 'ln'
3560 localtime_r_proto (d_localtime_r.U):
3561 This variable encodes the prototype of localtime_r.
3562 It is zero if d_localtime_r is undef, and one of the
3563 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3566 locincpth (ccflags.U):
3567 This variable contains a list of additional directories to be
3568 searched by the compiler. The appropriate '-I' directives will
3569 be added to ccflags. This is intended to simplify setting
3570 local directories from the Configure command line.
3571 It's not much, but it parallels the loclibpth stuff in libpth.U.
3573 loclibpth (libpth.U):
3574 This variable holds the paths (space-separated) used to find local
3575 libraries. It is prepended to libpth, and is intended to be easily
3576 set from the command line.
3578 longdblsize (d_longdbl.U):
3579 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3580 indicates to the C program how many bytes there are in a long double,
3581 if this system supports long doubles.
3583 longlongsize (d_longlong.U):
3584 This variable contains the value of the LONGLONGSIZE symbol, which
3585 indicates to the C program how many bytes there are in a long long,
3586 if this system supports long long.
3588 longsize (intsize.U):
3589 This variable contains the value of the LONGSIZE symbol, which
3590 indicates to the C program how many bytes there are in a long.
3593 This variable is defined but not used by Configure.
3594 The value is a plain '' and is not useful.
3597 This variable is defined but not used by Configure.
3598 The value is a plain '' and is not useful.
3601 This variable is used internally by Configure to determine the
3602 full pathname (if any) of the ls program. After Configure runs,
3603 the value is reset to a plain "ls" and is not useful.
3605 lseeksize (lseektype.U):
3606 This variable defines lseektype to be something like off_t, long,
3607 or whatever type is used to declare lseek offset's type in the
3608 kernel (which also appears to be lseek's return type).
3610 lseektype (lseektype.U):
3611 This variable defines lseektype to be something like off_t, long,
3612 or whatever type is used to declare lseek offset's type in the
3613 kernel (which also appears to be lseek's return type).
3616 This variable indicates that the Misc Attribute Definition code is to
3620 If the Misc Attribute Decoration is to be compiled, this variable is
3621 set to the name of the extra header files to be used, else it is ''
3624 If the Misc Attribute Decoration is to be compiled, this variable is
3625 set to the name of the extra object files to be used, else it is ''
3628 If the Misc Attribute Decoration is to be compiled, this variable is
3629 set to the name of the extra C source files to be used, else it is ''
3632 This variable is defined but not used by Configure.
3633 The value is a plain '' and is not useful.
3636 This variable is defined but not used by Configure.
3637 The value is a plain '' and is not useful.
3640 This variable is used internally by Configure to determine the
3641 full pathname (if any) of the make program. After Configure runs,
3642 the value is reset to a plain "make" and is not useful.
3644 make_set_make (make.U):
3645 Some versions of 'make' set the variable MAKE. Others do not.
3646 This variable contains the string to be included in Makefile.SH
3647 so that MAKE is set if needed, and not if not needed.
3648 Possible values are:
3650 make_set_make='#' # If your make program handles this for you,
3652 make_set_make="MAKE=$make" # if it doesn't.
3654 This uses a comment character to distinguish a
3655 'set' value (from a previous config.sh or Configure '-D' option)
3656 from an uncomputed value.
3658 mallocobj (mallocsrc.U):
3659 This variable contains the name of the malloc.o that this package
3660 generates, if that malloc.o is preferred over the system malloc.
3661 Otherwise the value is null. This variable is intended for generating
3662 Makefiles. See mallocsrc.
3664 mallocsrc (mallocsrc.U):
3665 This variable contains the name of the malloc.c that comes with
3666 the package, if that malloc.c is preferred over the system malloc.
3667 Otherwise the value is null. This variable is intended for generating
3670 malloctype (mallocsrc.U):
3671 This variable contains the kind of ptr returned by malloc and realloc.
3673 man1dir (man1dir.U):
3674 This variable contains the name of the directory in which manual
3675 source pages are to be put. It is the responsibility of the
3676 Makefile.SH to get the value of this into the proper command.
3677 You must be prepared to do the ~name expansion yourself.
3679 man1direxp (man1dir.U):
3680 This variable is the same as the man1dir variable, but is filename
3681 expanded at configuration time, for convenient use in makefiles.
3683 man1ext (man1dir.U):
3684 This variable contains the extension that the manual page should
3685 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3688 man3dir (man3dir.U):
3689 This variable contains the name of the directory in which manual
3690 source pages are to be put. It is the responsibility of the
3691 Makefile.SH to get the value of this into the proper command.
3692 You must be prepared to do the ~name expansion yourself.
3694 man3direxp (man3dir.U):
3695 This variable is the same as the man3dir variable, but is filename
3696 expanded at configuration time, for convenient use in makefiles.
3698 man3ext (man3dir.U):
3699 This variable contains the extension that the manual page should
3700 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3703 mips_type (usrinc.U):
3704 This variable holds the environment type for the mips system.
3705 Possible values are "BSD 4.3" and "System V".
3707 mistrustnm (Csym.U):
3708 This variable can be used to establish a fallthrough for the cases
3709 where nm fails to find a symbol. If usenm is false or usenm is true
3710 and mistrustnm is false, this variable has no effect. If usenm is true
3711 and mistrustnm is "compile", a test program will be compiled to try to
3712 find any symbol that can't be located via nm lookup. If mistrustnm is
3713 "run", the test program will be run as well as being compiled.
3716 This variable is used internally by Configure to determine the
3717 full pathname (if any) of the mkdir program. After Configure runs,
3718 the value is reset to a plain "mkdir" and is not useful.
3720 mmaptype (d_mmap.U):
3721 This symbol contains the type of pointer returned by mmap()
3722 (and simultaneously the type of the first argument).
3723 It can be 'void *' or 'caddr_t'.
3725 modetype (modetype.U):
3726 This variable defines modetype to be something like mode_t,
3727 int, unsigned short, or whatever type is used to declare file
3728 modes for system calls.
3731 This variable is used internally by Configure to determine the
3732 full pathname (if any) of the more program. After Configure runs,
3733 the value is reset to a plain "more" and is not useful.
3735 multiarch (multiarch.U):
3736 This variable conditionally defines the MULTIARCH symbol
3737 which signifies the presence of multiplatform files.
3738 This is normally set by hints files.
3741 This variable is defined but not used by Configure.
3742 The value is a plain '' and is not useful.
3744 myarchname (archname.U):
3745 This variable holds the architecture name computed by Configure in
3746 a previous run. It is not intended to be perused by any user and
3747 should never be set in a hint file.
3749 mydomain (myhostname.U):
3750 This variable contains the eventual value of the MYDOMAIN symbol,
3751 which is the domain of the host the program is going to run on.
3752 The domain must be appended to myhostname to form a complete host name.
3753 The dot comes with mydomain, and need not be supplied by the program.
3755 myhostname (myhostname.U):
3756 This variable contains the eventual value of the MYHOSTNAME symbol,
3757 which is the name of the host the program is going to run on.
3758 The domain is not kept with hostname, but must be gotten from mydomain.
3759 The dot comes with mydomain, and need not be supplied by the program.
3761 myuname (Oldconfig.U):
3762 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3763 pseudo variables assignments in the output are stripped, thank you. The
3764 whole thing is then lower-cased.
3767 This variable contains the '-n' flag if that is what causes the echo
3768 command to suppress newline. Otherwise it is null. Correct usage is
3769 $echo $n "prompt for a question: $c".
3771 need_va_copy (need_va_copy.U):
3772 This symbol, if defined, indicates that the system stores
3773 the variable argument list datatype, va_list, in a format
3774 that cannot be copied by simple assignment, so that some
3775 other means must be used when copying is required.
3776 As such systems vary in their provision (or non-provision)
3777 of copying mechanisms, handy.h defines a platform-
3778 independent macro, Perl_va_copy(src, dst), to do the job.
3780 netdb_hlen_type (netdbtype.U):
3781 This variable holds the type used for the 2nd argument to
3782 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3783 This is only useful if you have gethostbyaddr(), naturally.
3785 netdb_host_type (netdbtype.U):
3786 This variable holds the type used for the 1st argument to
3787 gethostbyaddr(). Usually, this is char * or void *, possibly
3788 with or without a const prefix.
3789 This is only useful if you have gethostbyaddr(), naturally.
3791 netdb_name_type (netdbtype.U):
3792 This variable holds the type used for the argument to
3793 gethostbyname(). Usually, this is char * or const char *.
3794 This is only useful if you have gethostbyname(), naturally.
3796 netdb_net_type (netdbtype.U):
3797 This variable holds the type used for the 1st argument to
3798 getnetbyaddr(). Usually, this is int or long.
3799 This is only useful if you have getnetbyaddr(), naturally.
3802 This variable is used internally by Configure to determine the
3803 full pathname (if any) of the nm program. After Configure runs,
3804 the value is reset to a plain "nm" and is not useful.
3807 This variable holds the options that may be necessary for nm.
3809 nm_so_opt (usenm.U):
3810 This variable holds the options that may be necessary for nm
3811 to work on a shared library but that can not be used on an
3812 archive library. Currently, this is only used by Linux, where
3813 nm --dynamic is *required* to get symbols from an ELF library which
3814 has been stripped, but nm --dynamic is *fatal* on an archive library.
3815 Maybe Linux should just always set usenm=false.
3817 nonxs_ext (Extensions.U):
3818 This variable holds a list of all non-xs extensions included
3819 in the package. All of them will be built.
3822 This variable is used internally by Configure to determine the
3823 full pathname (if any) of the nroff program. After Configure runs,
3824 the value is reset to a plain "nroff" and is not useful.
3826 nv_overflows_integers_at (perlxv.U):
3827 This variable gives the largest integer value that NVs can hold
3828 as a constant floating point expression.
3829 If it could not be determined, it holds the value 0.
3831 nv_preserves_uv_bits (perlxv.U):
3832 This variable indicates how many of bits type uvtype
3833 a variable nvtype can preserve.
3835 nveformat (perlxvf.U):
3836 This variable contains the format string used for printing
3837 a Perl NV using %e-ish floating point format.
3839 nvEUformat (perlxvf.U):
3840 This variable contains the format string used for printing
3841 a Perl NV using %E-ish floating point format.
3843 nvfformat (perlxvf.U):
3844 This variable confains the format string used for printing
3845 a Perl NV using %f-ish floating point format.
3847 nvFUformat (perlxvf.U):
3848 This variable confains the format string used for printing
3849 a Perl NV using %F-ish floating point format.
3851 nvgformat (perlxvf.U):
3852 This variable contains the format string used for printing
3853 a Perl NV using %g-ish floating point format.
3855 nvGUformat (perlxvf.U):
3856 This variable contains the format string used for printing
3857 a Perl NV using %G-ish floating point format.
3860 This variable is the size of an NV in bytes.
3863 This variable contains the C type used for Perl's NV.
3865 o_nonblock (nblock_io.U):
3866 This variable bears the symbol value to be used during open() or fcntl()
3867 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3868 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3869 but that is only supported by some devices.
3872 This is an old synonym for _o.
3874 old_pthread_create_joinable (d_pthrattrj.U):
3875 This variable defines the constant to use for creating joinable
3876 (aka undetached) pthreads. Unused if pthread.h defines
3877 PTHREAD_CREATE_JOINABLE. If used, possible values are
3878 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3880 optimize (ccflags.U):
3881 This variable contains any optimizer/debugger flag that should be used.
3882 It is up to the Makefile to use it.
3884 orderlib (orderlib.U):
3885 This variable is "true" if the components of libraries must be ordered
3886 (with `lorder $* | tsort`) before placing them in an archive. Set to
3887 "false" if ranlib or ar can generate random libraries.
3889 osname (Oldconfig.U):
3890 This variable contains the operating system name (e.g. sunos,
3891 solaris, hpux, etc.). It can be useful later on for setting
3892 defaults. Any spaces are replaced with underscores. It is set
3893 to a null string if we can't figure it out.
3895 osvers (Oldconfig.U):
3896 This variable contains the operating system version (e.g.
3897 4.1.3, 5.2, etc.). It is primarily used for helping select
3898 an appropriate hints file, but might be useful elsewhere for
3899 setting defaults. It is set to '' if we can't figure it out.
3900 We try to be flexible about how much of the version number
3901 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3902 same for this package, hints files might just be os_4.0 or
3903 os_4.1, etc., not keeping separate files for each little release.
3905 otherlibdirs (otherlibdirs.U):
3906 This variable contains a colon-separated set of paths for the perl
3907 binary to search for additional library files or modules.
3908 These directories will be tacked to the end of @INC.
3909 Perl will automatically search below each path for version-
3910 and architecture-specific directories. See inc_version_list
3912 A value of ' ' means 'none' and is used to preserve this value
3913 for the next run through Configure.
3915 package (package.U):
3916 This variable contains the name of the package being constructed.
3917 It is primarily intended for the use of later Configure units.
3920 This variable contains the name of the preferred pager on the system.
3921 Usual values are (the full pathnames of) more, less, pg, or cat.
3924 This variable contains a command that produces the text of the
3925 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3926 "ypcat passwd" when NIS is used.
3927 On some systems, such as os390, there may be no equivalent
3928 command, in which case this variable is unset.
3930 patchlevel (patchlevel.U):
3931 The patchlevel level of this package.
3932 The value of patchlevel comes from the patchlevel.h file.
3933 In a version number such as 5.6.1, this is the "6".
3934 In patchlevel.h, this is referred to as "PERL_VERSION".
3937 This is an old synonym for p_ in Head.U, the character
3938 used to separate elements in the command shell search PATH.
3941 This variable is defined but not used by Configure.
3942 The value is a plain '' and is not useful.
3945 This variable contains the full path (if any) to a previously
3946 installed perl5.005 or later suitable for running the script
3947 to determine inc_version_list.
3949 PERL_API_REVISION (patchlevel.h):
3950 This number describes the earliest compatible PERL_REVISION of
3951 Perl ("compatibility" here being defined as sufficient binary/API
3952 compatibility to run XS code built with the older version).
3953 Normally this does not change across maintenance releases.
3954 Please read the comment in patchlevel.h.
3956 PERL_API_SUBVERSION (patchlevel.h):
3957 This number describes the earliest compatible PERL_SUBVERSION of
3958 Perl ("compatibility" here being defined as sufficient binary/API
3959 compatibility to run XS code built with the older version).
3960 Normally this does not change across maintenance releases.
3961 Please read the comment in patchlevel.h.
3963 PERL_API_VERSION (patchlevel.h):
3964 This number describes the earliest compatible PERL_VERSION of
3965 Perl ("compatibility" here being defined as sufficient binary/API
3966 compatibility to run XS code built with the older version).
3967 Normally this does not change across maintenance releases.
3968 Please read the comment in patchlevel.h.
3970 PERL_CONFIG_SH (Oldsyms.U):
3971 This is set to 'true' in config.sh so that a shell script
3972 sourcing config.sh can tell if it has been sourced already.
3974 PERL_PATCHLEVEL (Oldsyms.U):
3975 This symbol reflects the patchlevel, if available. Will usually
3976 come from the .patch file, which is available when the perl
3977 source tree was fetched with rsync.
3979 perl_patchlevel (patchlevel.U):
3980 This is the Perl patch level, a numeric change identifier,
3981 as defined by whichever source code maintenance system
3982 is used to maintain the patches; currently Perforce.
3983 It does not correlate with the Perl version numbers or
3984 the maintenance versus development dichotomy except
3985 by also being increasing.
3987 PERL_REVISION (Oldsyms.U):
3988 In a Perl version number such as 5.6.2, this is the 5.
3989 This value is manually set in patchlevel.h
3991 PERL_SUBVERSION (Oldsyms.U):
3992 In a Perl version number such as 5.6.2, this is the 2.
3993 Values greater than 50 represent potentially unstable
3994 development subversions.
3995 This value is manually set in patchlevel.h
3997 PERL_VERSION (Oldsyms.U):
3998 In a Perl version number such as 5.6.2, this is the 6.
3999 This value is manually set in patchlevel.h
4001 perladmin (perladmin.U):
4002 Electronic mail address of the perl5 administrator.
4005 The list of libraries needed by Perl only (any libraries needed
4006 by extensions only will by dropped, if using dynamic loading).
4008 perlpath (perlpath.U):
4009 This variable contains the eventual value of the PERLPATH symbol,
4010 which contains the name of the perl interpreter to be used in
4011 shell scripts and in the "eval 'exec'" idiom. This variable is
4012 not necessarily the pathname of the file containing the perl
4013 interpreter; you must append the executable extension (_exe) if
4014 it is not already present. Note that Perl code that runs during
4015 the Perl build process cannot reference this variable, as Perl
4016 may not have been installed, or even if installed, may be a
4017 different version of Perl.
4020 This variable is used internally by Configure to determine the
4021 full pathname (if any) of the pg program. After Configure runs,
4022 the value is reset to a plain "pg" and is not useful.
4024 phostname (myhostname.U):
4025 This variable contains the eventual value of the PHOSTNAME symbol,
4026 which is a command that can be fed to popen() to get the host name.
4027 The program should probably not presume that the domain is or isn't
4030 pidtype (pidtype.U):
4031 This variable defines PIDTYPE to be something like pid_t, int,
4032 ushort, or whatever type is used to declare process ids in the kernel.
4035 Holds the private path used by Configure to find out the libraries.
4036 Its value is prepend to libpth. This variable takes care of special
4037 machines, like the mips. Usually, it should be empty.
4040 This variable is defined but not used by Configure.
4041 The value is a plain '' and is not useful.
4044 This variable is defined but not used by Configure.
4045 The value is a plain '' and is not useful.
4048 This variable holds the name of the directory below which the
4049 user will install the package. Usually, this is /usr/local, and
4050 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4051 man pages in /usr/local/man, etc. It is only used to set defaults
4052 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4054 prefixexp (prefix.U):
4055 This variable holds the full absolute path of the directory below
4056 which the user will install the package. Derived from prefix.
4058 privlib (privlib.U):
4059 This variable contains the eventual value of the PRIVLIB symbol,
4060 which is the name of the private library for this package. It may
4061 have a ~ on the front. It is up to the makefile to eventually create
4062 this directory while performing installation (with ~ substitution).
4064 privlibexp (privlib.U):
4065 This variable is the ~name expanded version of privlib, so that you
4066 may use it directly in Makefiles or shell scripts.
4068 procselfexe (d_procselfexe.U):
4069 If d_procselfexe is defined, $procselfexe is the filename
4070 of the symbolic link pointing to the absolute pathname of
4071 the executing program.
4073 prototype (prototype.U):
4074 This variable holds the eventual value of CAN_PROTOTYPE, which
4075 indicates the C compiler can handle funciton prototypes.
4077 ptrsize (ptrsize.U):
4078 This variable contains the value of the PTRSIZE symbol, which
4079 indicates to the C program how many bytes there are in a pointer.
4081 quadkind (quadtype.U):
4082 This variable, if defined, encodes the type of a quad:
4083 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4085 quadtype (quadtype.U):
4086 This variable defines Quad_t to be something like long, int,
4087 long long, int64_t, or whatever type is used for 64-bit integers.
4089 randbits (randfunc.U):
4090 Indicates how many bits are produced by the function used to
4091 generate normalized random numbers.
4093 randfunc (randfunc.U):
4094 Indicates the name of the random number function to use.
4095 Values include drand48, random, and rand. In C programs,
4096 the 'Drand01' macro is defined to generate uniformly distributed
4097 random numbers over the range [0., 1.[ (see drand01 and nrand).
4099 random_r_proto (d_random_r.U):
4100 This variable encodes the prototype of random_r.
4101 It is zero if d_random_r is undef, and one of the
4102 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4105 randseedtype (randfunc.U):
4106 Indicates the type of the argument of the seedfunc.
4108 ranlib (orderlib.U):
4109 This variable is set to the pathname of the ranlib program, if it is
4110 needed to generate random libraries. Set to ":" if ar can generate
4111 random libraries or if random libraries are not supported
4113 rd_nodata (nblock_io.U):
4114 This variable holds the return code from read() when no data is
4115 present. It should be -1, but some systems return 0 when O_NDELAY is
4116 used, which is a shame because you cannot make the difference between
4117 no data and an EOF.. Sigh!
4119 readdir64_r_proto (d_readdir64_r.U):
4120 This variable encodes the prototype of readdir64_r.
4121 It is zero if d_readdir64_r is undef, and one of the
4122 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4125 readdir_r_proto (d_readdir_r.U):
4126 This variable encodes the prototype of readdir_r.
4127 It is zero if d_readdir_r is undef, and one of the
4128 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4131 revision (patchlevel.U):
4132 The value of revision comes from the patchlevel.h file.
4133 In a version number such as 5.6.1, this is the "5".
4134 In patchlevel.h, this is referred to as "PERL_REVISION".
4137 This variable is used internally by Configure to determine the
4138 full pathname (if any) of the rm program. After Configure runs,
4139 the value is reset to a plain "rm" and is not useful.
4142 This is a cleanup variable for try test programs.
4143 Internal Configure use only.
4146 This variable is defined but not used by Configure.
4147 The value is a plain '' and is not useful.
4150 This variable contains the command used by Configure
4151 to copy and execute a cross-compiled executable in the
4152 target host. Useful and available only during Perl build.
4153 Empty string '' if not cross-compiling.
4156 This variable contains 'true' or 'false' depending whether the
4157 nm extraction should be performed or not, according to the value
4158 of usenm and the flags on the Configure command line.
4160 sched_yield (d_pthread_y.U):
4161 This variable defines the way to yield the execution
4162 of the current thread.
4164 scriptdir (scriptdir.U):
4165 This variable holds the name of the directory in which the user wants
4166 to put publicly scripts for the package in question. It is either
4167 the same directory as for binaries, or a special one that can be
4168 mounted across different architectures, like /usr/share. Programs
4169 must be prepared to deal with ~name expansion.
4171 scriptdirexp (scriptdir.U):
4172 This variable is the same as scriptdir, but is filename expanded
4173 at configuration time, for programs not wanting to bother with it.
4176 This variable is used internally by Configure to determine the
4177 full pathname (if any) of the sed program. After Configure runs,
4178 the value is reset to a plain "sed" and is not useful.
4180 seedfunc (randfunc.U):
4181 Indicates the random number generating seed function.
4182 Values include srand48, srandom, and srand.
4184 selectminbits (selectminbits.U):
4185 This variable holds the minimum number of bits operated by select.
4186 That is, if you do select(n, ...), how many bits at least will be
4187 cleared in the masks if some activity is detected. Usually this
4188 is either n or 32*ceil(n/32), especially many little-endians do
4189 the latter. This is only useful if you have select(), naturally.
4191 selecttype (selecttype.U):
4192 This variable holds the type used for the 2nd, 3rd, and 4th
4193 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4194 is defined, and 'int *' otherwise. This is only useful if you
4195 have select(), naturally.
4198 This variable is defined but not used by Configure.
4199 The value is a plain '' and is not useful.
4201 setgrent_r_proto (d_setgrent_r.U):
4202 This variable encodes the prototype of setgrent_r.
4203 It is zero if d_setgrent_r is undef, and one of the
4204 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4207 sethostent_r_proto (d_sethostent_r.U):
4208 This variable encodes the prototype of sethostent_r.
4209 It is zero if d_sethostent_r is undef, and one of the
4210 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4213 setlocale_r_proto (d_setlocale_r.U):
4214 This variable encodes the prototype of setlocale_r.
4215 It is zero if d_setlocale_r is undef, and one of the
4216 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4219 setnetent_r_proto (d_setnetent_r.U):
4220 This variable encodes the prototype of setnetent_r.
4221 It is zero if d_setnetent_r is undef, and one of the
4222 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4225 setprotoent_r_proto (d_setprotoent_r.U):
4226 This variable encodes the prototype of setprotoent_r.
4227 It is zero if d_setprotoent_r is undef, and one of the
4228 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4231 setpwent_r_proto (d_setpwent_r.U):
4232 This variable encodes the prototype of setpwent_r.
4233 It is zero if d_setpwent_r is undef, and one of the
4234 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4237 setservent_r_proto (d_setservent_r.U):
4238 This variable encodes the prototype of setservent_r.
4239 It is zero if d_setservent_r is undef, and one of the
4240 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4244 This variable contains the full pathname of the shell used
4245 on this system to execute Bourne shell scripts. Usually, this will be
4246 /bin/sh, though it's possible that some systems will have /bin/ksh,
4247 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4249 This unit comes before Options.U, so you can't set sh with a '-D'
4250 option, though you can override this (and startsh)
4251 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4254 This variable is defined but not used by Configure.
4255 The value is a plain '' and is not useful.
4257 sharpbang (spitshell.U):
4258 This variable contains the string #! if this system supports that
4261 shmattype (d_shmat.U):
4262 This symbol contains the type of pointer returned by shmat().
4263 It can be 'void *' or 'char *'.
4265 shortsize (intsize.U):
4266 This variable contains the value of the SHORTSIZE symbol which
4267 indicates to the C program how many bytes there are in a short.
4269 shrpenv (libperl.U):
4270 If the user builds a shared libperl.so, then we need to tell the
4271 'perl' executable where it will be able to find the installed libperl.so.
4272 One way to do this on some systems is to set the environment variable
4273 LD_RUN_PATH to the directory that will be the final location of the
4274 shared libperl.so. The makefile can use this with something like
4275 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4277 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4280 See the main perl Makefile.SH for actual working usage.
4281 Alternatively, we might be able to use a command line option such
4282 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4283 $archlibexp/CORE (Linux).
4285 shsharp (spitshell.U):
4286 This variable tells further Configure units whether your sh can
4289 sig_count (sig_name.U):
4290 This variable holds a number larger than the largest valid
4291 signal number. This is usually the same as the NSIG macro.
4293 sig_name (sig_name.U):
4294 This variable holds the signal names, space separated. The leading
4295 SIG in signal name is removed. A ZERO is prepended to the list.
4296 This is currently not used, sig_name_init is used instead.
4298 sig_name_init (sig_name.U):
4299 This variable holds the signal names, enclosed in double quotes and
4300 separated by commas, suitable for use in the SIG_NAME definition
4301 below. A "ZERO" is prepended to the list, and the list is
4302 terminated with a plain 0. The leading SIG in signal names
4303 is removed. See sig_num.
4305 sig_num (sig_name.U):
4306 This variable holds the signal numbers, space separated. A ZERO is
4307 prepended to the list (corresponding to the fake SIGZERO).
4308 Those numbers correspond to the value of the signal listed
4309 in the same place within the sig_name list.
4310 This is currently not used, sig_num_init is used instead.
4312 sig_num_init (sig_name.U):
4313 This variable holds the signal numbers, enclosed in double quotes and
4314 separated by commas, suitable for use in the SIG_NUM definition
4315 below. A "ZERO" is prepended to the list, and the list is
4316 terminated with a plain 0.
4318 sig_size (sig_name.U):
4319 This variable contains the number of elements of the sig_name
4322 signal_t (d_voidsig.U):
4323 This variable holds the type of the signal handler (void or int).
4325 sitearch (sitearch.U):
4326 This variable contains the eventual value of the SITEARCH symbol,
4327 which is the name of the private library for this package. It may
4328 have a ~ on the front. It is up to the makefile to eventually create
4329 this directory while performing installation (with ~ substitution).
4330 The standard distribution will put nothing in this directory.
4331 After perl has been installed, users may install their own local
4332 architecture-dependent modules in this directory with
4333 MakeMaker Makefile.PL
4334 or equivalent. See INSTALL for details.
4336 sitearchexp (sitearch.U):
4337 This variable is the ~name expanded version of sitearch, so that you
4338 may use it directly in Makefiles or shell scripts.
4340 sitebin (sitebin.U):
4341 This variable holds the name of the directory in which the user wants
4342 to put add-on publicly executable files for the package in question. It
4343 is most often a local directory such as /usr/local/bin. Programs using
4344 this variable must be prepared to deal with ~name substitution.
4345 The standard distribution will put nothing in this directory.
4346 After perl has been installed, users may install their own local
4347 executables in this directory with
4348 MakeMaker Makefile.PL
4349 or equivalent. See INSTALL for details.
4351 sitebinexp (sitebin.U):
4352 This is the same as the sitebin variable, but is filename expanded at
4353 configuration time, for use in your makefiles.
4355 sitehtml1dir (sitehtml1dir.U):
4356 This variable contains the name of the directory in which site-specific
4357 html source pages are to be put. It is the responsibility of the
4358 Makefile.SH to get the value of this into the proper command.
4359 You must be prepared to do the ~name expansion yourself.
4360 The standard distribution will put nothing in this directory.
4361 After perl has been installed, users may install their own local
4362 html pages in this directory with
4363 MakeMaker Makefile.PL
4364 or equivalent. See INSTALL for details.
4366 sitehtml1direxp (sitehtml1dir.U):
4367 This variable is the same as the sitehtml1dir variable, but is filename
4368 expanded at configuration time, for convenient use in makefiles.
4370 sitehtml3dir (sitehtml3dir.U):
4371 This variable contains the name of the directory in which site-specific
4372 library html source pages are to be put. It is the responsibility of the
4373 Makefile.SH to get the value of this into the proper command.
4374 You must be prepared to do the ~name expansion yourself.
4375 The standard distribution will put nothing in this directory.
4376 After perl has been installed, users may install their own local
4377 library html pages in this directory with
4378 MakeMaker Makefile.PL
4379 or equivalent. See INSTALL for details.
4381 sitehtml3direxp (sitehtml3dir.U):
4382 This variable is the same as the sitehtml3dir variable, but is filename
4383 expanded at configuration time, for convenient use in makefiles.
4385 sitelib (sitelib.U):
4386 This variable contains the eventual value of the SITELIB symbol,
4387 which is the name of the private library for this package. It may
4388 have a ~ on the front. It is up to the makefile to eventually create
4389 this directory while performing installation (with ~ substitution).
4390 The standard distribution will put nothing in this directory.
4391 After perl has been installed, users may install their own local
4392 architecture-independent modules in this directory with
4393 MakeMaker Makefile.PL
4394 or equivalent. See INSTALL for details.
4396 sitelib_stem (sitelib.U):
4397 This variable is $sitelibexp with any trailing version-specific component
4398 removed. The elements in inc_version_list (inc_version_list.U) can
4399 be tacked onto this variable to generate a list of directories to search.
4401 sitelibexp (sitelib.U):
4402 This variable is the ~name expanded version of sitelib, so that you
4403 may use it directly in Makefiles or shell scripts.
4405 siteman1dir (siteman1dir.U):
4406 This variable contains the name of the directory in which site-specific
4407 manual source pages are to be put. It is the responsibility of the
4408 Makefile.SH to get the value of this into the proper command.
4409 You must be prepared to do the ~name expansion yourself.
4410 The standard distribution will put nothing in this directory.
4411 After perl has been installed, users may install their own local
4412 man1 pages in this directory with
4413 MakeMaker Makefile.PL
4414 or equivalent. See INSTALL for details.
4416 siteman1direxp (siteman1dir.U):
4417 This variable is the same as the siteman1dir variable, but is filename
4418 expanded at configuration time, for convenient use in makefiles.
4420 siteman3dir (siteman3dir.U):
4421 This variable contains the name of the directory in which site-specific
4422 library man source pages are to be put. It is the responsibility of the
4423 Makefile.SH to get the value of this into the proper command.
4424 You must be prepared to do the ~name expansion yourself.
4425 The standard distribution will put nothing in this directory.
4426 After perl has been installed, users may install their own local
4427 man3 pages in this directory with
4428 MakeMaker Makefile.PL
4429 or equivalent. See INSTALL for details.
4431 siteman3direxp (siteman3dir.U):
4432 This variable is the same as the siteman3dir variable, but is filename
4433 expanded at configuration time, for convenient use in makefiles.
4435 siteprefix (siteprefix.U):
4436 This variable holds the full absolute path of the directory below
4437 which the user will install add-on packages.
4438 See INSTALL for usage and examples.
4440 siteprefixexp (siteprefix.U):
4441 This variable holds the full absolute path of the directory below
4442 which the user will install add-on packages. Derived from siteprefix.
4444 sitescript (sitescript.U):
4445 This variable holds the name of the directory in which the user wants
4446 to put add-on publicly executable files for the package in question. It
4447 is most often a local directory such as /usr/local/bin. Programs using
4448 this variable must be prepared to deal with ~name substitution.
4449 The standard distribution will put nothing in this directory.
4450 After perl has been installed, users may install their own local
4451 scripts in this directory with
4452 MakeMaker Makefile.PL
4453 or equivalent. See INSTALL for details.
4455 sitescriptexp (sitescript.U):
4456 This is the same as the sitescript variable, but is filename expanded at
4457 configuration time, for use in your makefiles.
4459 sizesize (sizesize.U):
4460 This variable contains the size of a sizetype in bytes.
4462 sizetype (sizetype.U):
4463 This variable defines sizetype to be something like size_t,
4464 unsigned long, or whatever type is used to declare length
4465 parameters for string functions.
4468 This variable is defined but not used by Configure.
4469 The value is a plain '' and is not useful.
4472 This variable is defined but not used by Configure.
4473 The value is a plain '' and is not useful.
4476 This variable holds the extension used to identify shared libraries
4477 (also known as shared objects) on the system. Usually set to 'so'.
4479 sockethdr (d_socket.U):
4480 This variable has any cpp '-I' flags needed for socket support.
4482 socketlib (d_socket.U):
4483 This variable has the names of any libraries needed for socket support.
4485 socksizetype (socksizetype.U):
4486 This variable holds the type used for the size argument
4487 for various socket calls like accept. Usual values include
4488 socklen_t, size_t, and int.
4491 This variable is used internally by Configure to determine the
4492 full pathname (if any) of the sort program. After Configure runs,
4493 the value is reset to a plain "sort" and is not useful.
4495 spackage (package.U):
4496 This variable contains the name of the package being constructed,
4497 with the first letter uppercased, i.e. suitable for starting
4500 spitshell (spitshell.U):
4501 This variable contains the command necessary to spit out a runnable
4502 shell on this system. It is either cat or a grep '-v' for # comments.
4504 sPRId64 (quadfio.U):
4505 This variable, if defined, contains the string used by stdio to
4506 format 64-bit decimal numbers (format 'd') for output.
4508 sPRIeldbl (longdblfio.U):
4509 This variable, if defined, contains the string used by stdio to
4510 format long doubles (format 'e') for output.
4512 sPRIEUldbl (longdblfio.U):
4513 This variable, if defined, contains the string used by stdio to
4514 format long doubles (format 'E') for output.
4515 The 'U' in the name is to separate this from sPRIeldbl so that even
4516 case-blind systems can see the difference.
4518 sPRIfldbl (longdblfio.U):
4519 This variable, if defined, contains the string used by stdio to
4520 format long doubles (format 'f') for output.
4522 sPRIFUldbl (longdblfio.U):
4523 This variable, if defined, contains the string used by stdio to
4524 format long doubles (format 'F') for output.
4525 The 'U' in the name is to separate this from sPRIfldbl so that even
4526 case-blind systems can see the difference.
4528 sPRIgldbl (longdblfio.U):
4529 This variable, if defined, contains the string used by stdio to
4530 format long doubles (format 'g') for output.
4532 sPRIGUldbl (longdblfio.U):
4533 This variable, if defined, contains the string used by stdio to
4534 format long doubles (format 'G') for output.
4535 The 'U' in the name is to separate this from sPRIgldbl so that even
4536 case-blind systems can see the difference.
4538 sPRIi64 (quadfio.U):
4539 This variable, if defined, contains the string used by stdio to
4540 format 64-bit decimal numbers (format 'i') for output.
4542 sPRIo64 (quadfio.U):
4543 This variable, if defined, contains the string used by stdio to
4544 format 64-bit octal numbers (format 'o') for output.
4546 sPRIu64 (quadfio.U):
4547 This variable, if defined, contains the string used by stdio to
4548 format 64-bit unsigned decimal numbers (format 'u') for output.
4550 sPRIx64 (quadfio.U):
4551 This variable, if defined, contains the string used by stdio to
4552 format 64-bit hexadecimal numbers (format 'x') for output.
4554 sPRIXU64 (quadfio.U):
4555 This variable, if defined, contains the string used by stdio to
4556 format 64-bit hExADECimAl numbers (format 'X') for output.
4557 The 'U' in the name is to separate this from sPRIx64 so that even
4558 case-blind systems can see the difference.
4560 srand48_r_proto (d_srand48_r.U):
4561 This variable encodes the prototype of srand48_r.
4562 It is zero if d_srand48_r is undef, and one of the
4563 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4566 srandom_r_proto (d_srandom_r.U):
4567 This variable encodes the prototype of srandom_r.
4568 It is zero if d_srandom_r is undef, and one of the
4569 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4573 This variable holds the (possibly relative) path of the package source.
4574 It is up to the Makefile to use this variable and set VPATH accordingly
4575 to find the sources remotely. Use $pkgsrc to have an absolute path.
4577 sSCNfldbl (longdblfio.U):
4578 This variable, if defined, contains the string used by stdio to
4579 format long doubles (format 'f') for input.
4581 ssizetype (ssizetype.U):
4582 This variable defines ssizetype to be something like ssize_t,
4583 long or int. It is used by functions that return a count
4584 of bytes or an error condition. It must be a signed type.
4585 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4587 startperl (startperl.U):
4588 This variable contains the string to put on the front of a perl
4589 script to make sure (hopefully) that it runs with perl and not some
4590 shell. Of course, that leading line must be followed by the classical
4592 eval 'exec perl -S $0 ${1+"$@"}'
4593 if $running_under_some_shell;
4594 to guarantee perl startup should the shell execute the script. Note
4595 that this magic incatation is not understood by csh.
4597 startsh (startsh.U):
4598 This variable contains the string to put on the front of a shell
4599 script to make sure (hopefully) that it runs with sh and not some
4602 static_ext (Extensions.U):
4603 This variable holds a list of XS extension files we want to
4604 link statically into the package. It is used by Makefile.
4606 stdchar (stdchar.U):
4607 This variable conditionally defines STDCHAR to be the type of char
4608 used in stdio.h. It has the values "unsigned char" or "char".
4610 stdio_base (d_stdstdio.U):
4611 This variable defines how, given a FILE pointer, fp, to access the
4612 _base field (or equivalent) of stdio.h's FILE structure. This will
4613 be used to define the macro FILE_base(fp).
4615 stdio_bufsiz (d_stdstdio.U):
4616 This variable defines how, given a FILE pointer, fp, to determine
4617 the number of bytes store in the I/O buffer pointer to by the
4618 _base field (or equivalent) of stdio.h's FILE structure. This will
4619 be used to define the macro FILE_bufsiz(fp).
4621 stdio_cnt (d_stdstdio.U):
4622 This variable defines how, given a FILE pointer, fp, to access the
4623 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4624 be used to define the macro FILE_cnt(fp).
4626 stdio_filbuf (d_stdstdio.U):
4627 This variable defines how, given a FILE pointer, fp, to tell
4628 stdio to refill its internal buffers (?). This will
4629 be used to define the macro FILE_filbuf(fp).
4631 stdio_ptr (d_stdstdio.U):
4632 This variable defines how, given a FILE pointer, fp, to access the
4633 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4634 be used to define the macro FILE_ptr(fp).
4636 stdio_stream_array (stdio_streams.U):
4637 This variable tells the name of the array holding the stdio streams.
4638 Usual values include _iob, __iob, and __sF.
4640 strerror_r_proto (d_strerror_r.U):
4641 This variable encodes the prototype of strerror_r.
4642 It is zero if d_strerror_r is undef, and one of the
4643 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4646 strings (i_string.U):
4647 This variable holds the full path of the string header that will be
4648 used. Typically /usr/include/string.h or /usr/include/strings.h.
4651 This variable is defined but not used by Configure.
4652 The value is a plain '' and is not useful.
4654 subversion (patchlevel.U):
4655 The subversion level of this package.
4656 The value of subversion comes from the patchlevel.h file.
4657 In a version number such as 5.6.1, this is the "1".
4658 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4659 This is unique to perl.
4662 This variable holds the place where the manual is located on this
4663 system. It is not the place where the user wants to put his manual
4664 pages. Rather it is the place where Configure may look to find manual
4665 for unix commands (section 1 of the manual usually). See mansrc.
4668 This variable is defined but not used by Configure.
4669 The value is a plain '' and is not useful.
4672 This variable is defined but not used by Configure.
4673 The value is a plain '' and is not useful.
4675 targetarch (Cross.U):
4676 If cross-compiling, this variable contains the target architecture.
4677 If not, this will be empty.
4680 This variable is defined but not used by Configure.
4681 The value is a plain '' and is not useful.
4684 This variable is defined but not used by Configure.
4685 The value is a plain '' and is not useful.
4688 This variable is used internally by Configure to determine the
4689 full pathname (if any) of the test program. After Configure runs,
4690 the value is reset to a plain "test" and is not useful.
4692 timeincl (i_time.U):
4693 This variable holds the full path of the included time header(s).
4695 timetype (d_time.U):
4696 This variable holds the type returned by time(). It can be long,
4697 or time_t on BSD sites (in which case <sys/types.h> should be
4698 included). Anyway, the type Time_t should be used.
4700 tmpnam_r_proto (d_tmpnam_r.U):
4701 This variable encodes the prototype of tmpnam_r.
4702 It is zero if d_tmpnam_r is undef, and one of the
4703 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4707 This variable contains the command used by Configure
4708 to copy to from the target host. Useful and available
4709 only during Perl build.
4710 The string ':' if not cross-compiling.
4713 This variable is used internally by Configure to determine the
4714 full pathname (if any) of the touch program. After Configure runs,
4715 the value is reset to a plain "touch" and is not useful.
4718 This variable is used internally by Configure to determine the
4719 full pathname (if any) of the tr program. After Configure runs,
4720 the value is reset to a plain "tr" and is not useful.
4723 This variable contains the value to be passed to the tr(1)
4724 command to transliterate a newline. Typical values are
4725 '\012' and '\n'. This is needed for EBCDIC systems where
4726 newline is not necessarily '\012'.
4729 This variable is defined but not used by Configure.
4730 The value is a plain '' and is not useful.
4732 ttyname_r_proto (d_ttyname_r.U):
4733 This variable encodes the prototype of ttyname_r.
4734 It is zero if d_ttyname_r is undef, and one of the
4735 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4739 This variable is the size of an U16 in bytes.
4742 This variable contains the C type used for Perl's U16.
4745 This variable is the size of an U32 in bytes.
4748 This variable contains the C type used for Perl's U32.
4751 This variable is the size of an U64 in bytes.
4754 This variable contains the C type used for Perl's U64.
4757 This variable is the size of an U8 in bytes.
4760 This variable contains the C type used for Perl's U8.
4763 This variable contains the format string used for printing a Uid_t.
4765 uidsign (uidsign.U):
4766 This variable contains the signedness of a uidtype.
4767 1 for unsigned, -1 for signed.
4769 uidsize (uidsize.U):
4770 This variable contains the size of a uidtype in bytes.
4772 uidtype (uidtype.U):
4773 This variable defines Uid_t to be something like uid_t, int,
4774 ushort, or whatever type is used to declare user ids in the kernel.
4777 This variable is used internally by Configure to determine the
4778 full pathname (if any) of the uname program. After Configure runs,
4779 the value is reset to a plain "uname" and is not useful.
4782 This variable is used internally by Configure to determine the
4783 full pathname (if any) of the uniq program. After Configure runs,
4784 the value is reset to a plain "uniq" and is not useful.
4786 uquadtype (quadtype.U):
4787 This variable defines Uquad_t to be something like unsigned long,
4788 unsigned int, unsigned long long, uint64_t, or whatever type is
4789 used for 64-bit integers.
4791 use5005threads (usethreads.U):
4792 This variable conditionally defines the USE_5005THREADS symbol,
4793 and indicates that Perl should be built to use the 5.005-based
4794 threading implementation. Only valid up to 5.8.x.
4796 use64bitall (use64bits.U):
4797 This variable conditionally defines the USE_64_BIT_ALL symbol,
4798 and indicates that 64-bit integer types should be used
4799 when available. The maximal possible
4800 64-bitness is employed: LP64 or ILP64, meaning that you will
4801 be able to use more than 2 gigabytes of memory. This mode is
4802 even more binary incompatible than USE_64_BIT_INT. You may not
4803 be able to run the resulting executable in a 32-bit CPU at all or
4804 you may need at least to reboot your OS to 64-bit mode.
4806 use64bitint (use64bits.U):
4807 This variable conditionally defines the USE_64_BIT_INT symbol,
4808 and indicates that 64-bit integer types should be used
4809 when available. The minimal possible 64-bitness
4810 is employed, just enough to get 64-bit integers into Perl.
4811 This may mean using for example "long longs", while your memory
4812 may still be limited to 2 gigabytes.
4814 usecrosscompile (Cross.U):
4815 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4816 and indicates that Perl has been cross-compiled.
4819 This variable indicates if the system supports dynamic
4820 loading of some sort. See also dlsrc and dlobj.
4822 usedtrace (usedtrace.U):
4823 This variable indicates whether we are compiling with dtrace
4824 support. See also dtrace.
4826 usefaststdio (usefaststdio.U):
4827 This variable conditionally defines the USE_FAST_STDIO symbol,
4828 and indicates that Perl should be built to use 'fast stdio'.
4829 Defaults to define in Perls 5.8 and earlier, to undef later.
4831 useithreads (usethreads.U):
4832 This variable conditionally defines the USE_ITHREADS symbol,
4833 and indicates that Perl should be built to use the interpreter-based
4834 threading implementation.
4836 uselargefiles (uselfs.U):
4837 This variable conditionally defines the USE_LARGE_FILES symbol,
4838 and indicates that large file interfaces should be used when
4841 uselongdouble (uselongdbl.U):
4842 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4843 and indicates that long doubles should be used when available.
4845 usemallocwrap (mallocsrc.U):
4846 This variable contains y if we are wrapping malloc to prevent
4847 integer overflow during size calculations.
4849 usemorebits (usemorebits.U):
4850 This variable conditionally defines the USE_MORE_BITS symbol,
4851 and indicates that explicit 64-bit interfaces and long doubles
4852 should be used when available.
4854 usemultiplicity (usemultiplicity.U):
4855 This variable conditionally defines the MULTIPLICITY symbol,
4856 and indicates that Perl should be built to use multiplicity.
4858 usemymalloc (mallocsrc.U):
4859 This variable contains y if the malloc that comes with this package
4860 is desired over the system's version of malloc. People often include
4861 special versions of malloc for effiency, but such versions are often
4862 less portable. See also mallocsrc and mallocobj.
4863 If this is 'y', then -lmalloc is removed from $libs.
4866 This variable contains 'true' or 'false' depending whether the
4867 nm extraction is wanted or not.
4869 useopcode (Extensions.U):
4870 This variable holds either 'true' or 'false' to indicate
4871 whether the Opcode extension should be used. The sole
4872 use for this currently is to allow an easy mechanism
4873 for users to skip the Opcode extension from the Configure
4876 useperlio (useperlio.U):
4877 This variable conditionally defines the USE_PERLIO symbol,
4878 and indicates that the PerlIO abstraction should be
4881 useposix (Extensions.U):
4882 This variable holds either 'true' or 'false' to indicate
4883 whether the POSIX extension should be used. The sole
4884 use for this currently is to allow an easy mechanism
4885 for hints files to indicate that POSIX will not compile
4886 on a particular system.
4888 usereentrant (usethreads.U):
4889 This variable conditionally defines the USE_REENTRANT_API symbol,
4890 which indicates that the thread code may try to use the various
4891 _r versions of library functions. This is only potentially
4892 meaningful if usethreads is set and is very experimental, it is
4893 not even prompted for.
4895 userelocatableinc (bin.U):
4896 This variable is set to true to indicate that perl should relocate
4897 @INC entries at runtime based on the path to the perl binary.
4898 Any @INC paths starting ".../" are relocated relative to the directory
4899 containing the perl binary, and a logical cleanup of the path is then
4900 made around the join point (removing "dir/../" pairs)
4903 This variable is set to true when the user agrees to use sfio.
4904 It is set to false when sfio is not available or when the user
4905 explicitely requests not to use sfio. It is here primarily so
4906 that command-line settings can override the auto-detection of
4907 d_sfio without running into a "WHOA THERE".
4909 useshrplib (libperl.U):
4910 This variable is set to 'true' if the user wishes
4911 to build a shared libperl, and 'false' otherwise.
4913 usesitecustomize (d_sitecustomize.U):
4914 This variable is set to true when the user requires a mechanism that
4915 allows the sysadmin to add entries to @INC at runtime. This variable
4916 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
4918 usesocks (usesocks.U):
4919 This variable conditionally defines the USE_SOCKS symbol,
4920 and indicates that Perl should be built to use SOCKS.
4922 usethreads (usethreads.U):
4923 This variable conditionally defines the USE_THREADS symbol,
4924 and indicates that Perl should be built to use threads.
4926 usevendorprefix (vendorprefix.U):
4927 This variable tells whether the vendorprefix
4928 and consequently other vendor* paths are in use.
4930 usevfork (d_vfork.U):
4931 This variable is set to true when the user accepts to use vfork.
4932 It is set to false when no vfork is available or when the user
4933 explicitely requests not to use vfork.
4936 This variable holds the path of the include files, which is
4937 usually /usr/include. It is mainly used by other Configure units.
4940 This variable is defined but not used by Configure.
4941 The value is a plain '' and is not useful.
4943 uvoformat (perlxvf.U):
4944 This variable contains the format string used for printing
4945 a Perl UV as an unsigned octal integer.
4948 This variable is the size of a UV in bytes.
4951 This variable contains the C type used for Perl's UV.
4953 uvuformat (perlxvf.U):
4954 This variable contains the format string used for printing
4955 a Perl UV as an unsigned decimal integer.
4957 uvxformat (perlxvf.U):
4958 This variable contains the format string used for printing
4959 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4961 uvXUformat (perlxvf.U):
4962 This variable contains the format string used for printing
4963 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4965 vendorarch (vendorarch.U):
4966 This variable contains the value of the PERL_VENDORARCH symbol.
4967 It may have a ~ on the front.
4968 The standard distribution will put nothing in this directory.
4969 Vendors who distribute perl may wish to place their own
4970 architecture-dependent modules and extensions in this directory with
4971 MakeMaker Makefile.PL INSTALLDIRS=vendor
4972 or equivalent. See INSTALL for details.
4974 vendorarchexp (vendorarch.U):
4975 This variable is the ~name expanded version of vendorarch, so that you
4976 may use it directly in Makefiles or shell scripts.
4978 vendorbin (vendorbin.U):
4979 This variable contains the eventual value of the VENDORBIN symbol.
4980 It may have a ~ on the front.
4981 The standard distribution will put nothing in this directory.
4982 Vendors who distribute perl may wish to place additional
4983 binaries in this directory with
4984 MakeMaker Makefile.PL INSTALLDIRS=vendor
4985 or equivalent. See INSTALL for details.
4987 vendorbinexp (vendorbin.U):
4988 This variable is the ~name expanded version of vendorbin, so that you
4989 may use it directly in Makefiles or shell scripts.
4991 vendorhtml1dir (vendorhtml1dir.U):
4992 This variable contains the name of the directory for html
4993 pages. It may have a ~ on the front.
4994 The standard distribution will put nothing in this directory.
4995 Vendors who distribute perl may wish to place their own
4996 html pages in this directory with
4997 MakeMaker Makefile.PL INSTALLDIRS=vendor
4998 or equivalent. See INSTALL for details.
5000 vendorhtml1direxp (vendorhtml1dir.U):
5001 This variable is the ~name expanded version of vendorhtml1dir, so that you
5002 may use it directly in Makefiles or shell scripts.
5004 vendorhtml3dir (vendorhtml3dir.U):
5005 This variable contains the name of the directory for html
5006 library pages. It may have a ~ on the front.
5007 The standard distribution will put nothing in this directory.
5008 Vendors who distribute perl may wish to place their own
5009 html pages for modules and extensions in this directory with
5010 MakeMaker Makefile.PL INSTALLDIRS=vendor
5011 or equivalent. See INSTALL for details.
5013 vendorhtml3direxp (vendorhtml3dir.U):
5014 This variable is the ~name expanded version of vendorhtml3dir, so that you
5015 may use it directly in Makefiles or shell scripts.
5017 vendorlib (vendorlib.U):
5018 This variable contains the eventual value of the VENDORLIB symbol,
5019 which is the name of the private library for this package.
5020 The standard distribution will put nothing in this directory.
5021 Vendors who distribute perl may wish to place their own
5022 modules in this directory with
5023 MakeMaker Makefile.PL INSTALLDIRS=vendor
5024 or equivalent. See INSTALL for details.
5026 vendorlib_stem (vendorlib.U):
5027 This variable is $vendorlibexp with any trailing version-specific component
5028 removed. The elements in inc_version_list (inc_version_list.U) can
5029 be tacked onto this variable to generate a list of directories to search.
5031 vendorlibexp (vendorlib.U):
5032 This variable is the ~name expanded version of vendorlib, so that you
5033 may use it directly in Makefiles or shell scripts.
5035 vendorman1dir (vendorman1dir.U):
5036 This variable contains the name of the directory for man1
5037 pages. It may have a ~ on the front.
5038 The standard distribution will put nothing in this directory.
5039 Vendors who distribute perl may wish to place their own
5040 man1 pages in this directory with
5041 MakeMaker Makefile.PL INSTALLDIRS=vendor
5042 or equivalent. See INSTALL for details.
5044 vendorman1direxp (vendorman1dir.U):
5045 This variable is the ~name expanded version of vendorman1dir, so that you
5046 may use it directly in Makefiles or shell scripts.
5048 vendorman3dir (vendorman3dir.U):
5049 This variable contains the name of the directory for man3
5050 pages. It may have a ~ on the front.
5051 The standard distribution will put nothing in this directory.
5052 Vendors who distribute perl may wish to place their own
5053 man3 pages in this directory with
5054 MakeMaker Makefile.PL INSTALLDIRS=vendor
5055 or equivalent. See INSTALL for details.
5057 vendorman3direxp (vendorman3dir.U):
5058 This variable is the ~name expanded version of vendorman3dir, so that you
5059 may use it directly in Makefiles or shell scripts.
5061 vendorprefix (vendorprefix.U):
5062 This variable holds the full absolute path of the directory below
5063 which the vendor will install add-on packages.
5064 See INSTALL for usage and examples.
5066 vendorprefixexp (vendorprefix.U):
5067 This variable holds the full absolute path of the directory below
5068 which the vendor will install add-on packages. Derived from vendorprefix.
5070 vendorscript (vendorscript.U):
5071 This variable contains the eventual value of the VENDORSCRIPT symbol.
5072 It may have a ~ on the front.
5073 The standard distribution will put nothing in this directory.
5074 Vendors who distribute perl may wish to place additional
5075 executable scripts in this directory with
5076 MakeMaker Makefile.PL INSTALLDIRS=vendor
5077 or equivalent. See INSTALL for details.
5079 vendorscriptexp (vendorscript.U):
5080 This variable is the ~name expanded version of vendorscript, so that you
5081 may use it directly in Makefiles or shell scripts.
5083 version (patchlevel.U):
5084 The full version number of this package, such as 5.6.1 (or 5_6_1).
5085 This combines revision, patchlevel, and subversion to get the
5086 full version number, including any possible subversions.
5087 This is suitable for use as a directory name, and hence is
5088 filesystem dependent.
5090 version_patchlevel_string (patchlevel.U):
5091 This is a string combining version, subversion and
5092 perl_patchlevel (if perl_patchlevel is non-zero).
5093 It is typically something like
5094 'version 7 subversion 1' or
5095 'version 7 subversion 1 patchlevel 11224'
5096 It is computed here to avoid duplication of code in myconfig.SH
5099 versiononly (versiononly.U):
5100 If set, this symbol indicates that only the version-specific
5101 components of a perl installation should be installed.
5102 This may be useful for making a test installation of a new
5103 version without disturbing the existing installation.
5104 Setting versiononly is equivalent to setting installperl's -v option.
5105 In particular, the non-versioned scripts and programs such as
5106 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5107 (see INSTALL for a more complete list). Nor are the man
5109 Usually, this is undef.
5112 This variable is defined but not used by Configure.
5113 The value is a plain '' and is not useful.
5115 voidflags (voidflags.U):
5116 This variable contains the eventual value of the VOIDFLAGS symbol,
5117 which indicates how much support of the void type is given by this
5118 compiler. See VOIDFLAGS for more info.
5121 This variable holds extra path (space-separated) used to find
5122 libraries on this platform, for example CPU-specific libraries
5123 (on multi-CPU platforms) may be listed here.
5126 This variable holds the name of the compiler compiler we
5127 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5130 This variable contains any additional yacc flags desired by the
5131 user. It is up to the Makefile to use this.
5134 This variable is defined but not used by Configure.
5135 The value is a plain '' and is not useful.
5138 This variable is used internally by Configure to determine the
5139 full pathname (if any) of the zip program. After Configure runs,
5140 the value is reset to a plain "zip" and is not useful.