2 !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
3 This file is built by metaconfig.
5 This file contains a description of all the shell variables whose value is
6 determined by the Configure script. Variables intended for use in C
7 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
8 generates pod documentation for Config.pm from this file--please try to keep
9 the formatting regular.]
12 This variable defines the extension used for ordinary library files.
13 For unix, it is '.a'. The '.' is included. Other possible
14 values include '.lib'.
17 This variable defines the extension used for executable files.
18 DJGPP, Cygwin and OS/2 use '.exe'. Stratus VOS uses '.pm'.
19 On operating systems which do not require a specific extension
20 for executable files, this variable is empty.
23 This variable defines the extension used for object files.
24 For unix, it is '.o'. The '.' is included. Other possible
25 values include '.obj'.
28 This variable is set to 'true' if AFS (Andrew File System) is used
29 on the system, 'false' otherwise. It is possible to override this
30 with a hint value or command line option, but you'd better know
34 This variable is by default set to '/afs'. In the unlikely case
35 this is not the correct root, it is possible to override this with
36 a hint value or command line option. This will be used in subsequent
37 tests for AFSness in the Perl configure and test process.
39 alignbytes (alignbytes.U):
40 This variable holds the number of bytes required to align a
41 double-- or a long double when applicable. Usual values are
42 2, 4 and 8. The default is eight, for safety.
44 ansi2knr (ansi2knr.U):
45 This variable is set if the user needs to run ansi2knr.
46 Currently, this is not supported, so we just abort.
48 aphostname (d_gethname.U):
49 This variable contains the command which can be used to compute the
50 host name. The command is fully qualified by its absolute path, to make
51 it safe when used by a process with super-user privileges.
53 api_revision (patchlevel.U):
54 The three variables, api_revision, api_version, and
55 api_subversion, specify the version of the oldest perl binary
56 compatible with the present perl. In a full version string
57 such as '5.6.1', api_revision is the '5'.
58 Prior to 5.5.640, the format was a floating point number,
61 perl.c:incpush() and lib/lib.pm will automatically search in
62 $sitelib/.. for older directories back to the limit specified
63 by these api_ variables. This is only useful if you have a
64 perl library directory tree structured like the default one.
65 See INSTALL for how this works. The versioned site_perl
66 directory was introduced in 5.005, so that is the lowest
67 possible value. The version list appropriate for the current
68 system is determined in inc_version_list.U.
70 XXX To do: Since compatibility can depend on compile time
71 options (such as bincompat, longlong, etc.) it should
72 (perhaps) be set by Configure, but currently it isn't.
73 Currently, we read a hard-wired value from patchlevel.h.
74 Perhaps what we ought to do is take the hard-wired value from
75 patchlevel.h but then modify it if the current Configure
76 options warrant. patchlevel.h then would use an #ifdef guard.
78 api_subversion (patchlevel.U):
79 The three variables, api_revision, api_version, and
80 api_subversion, specify the version of the oldest perl binary
81 compatible with the present perl. In a full version string
82 such as '5.6.1', api_subversion is the '1'. See api_revision for
85 api_version (patchlevel.U):
86 The three variables, api_revision, api_version, and
87 api_subversion, specify the version of the oldest perl binary
88 compatible with the present perl. In a full version string
89 such as '5.6.1', api_version is the '6'. See api_revision for
90 full details. As a special case, 5.5.0 is rendered in the
91 old-style as 5.005. (In the 5.005_0x maintenance series,
92 this was the only versioned directory in $sitelib.)
94 api_versionstring (patchlevel.U):
95 This variable combines api_revision, api_version, and
96 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
97 for use as a directory name. This is filesystem dependent.
100 This variable is used internally by Configure to determine the
101 full pathname (if any) of the ar program. After Configure runs,
102 the value is reset to a plain "ar" and is not useful.
105 This variable holds the name of the directory in which the user wants
106 to put architecture-dependent public library files for $package.
107 It is most often a local directory such as /usr/local/lib.
108 Programs using this variable must be prepared to deal
109 with filename expansion.
111 archlibexp (archlib.U):
112 This variable is the same as the archlib variable, but is
113 filename expanded at configuration time, for convenient use.
115 archname64 (use64bits.U):
116 This variable is used for the 64-bitness part of $archname.
118 archname (archname.U):
119 This variable is a short name to characterize the current
120 architecture. It is used mainly to construct the default archlib.
123 This variable defines any additional objects that must be linked
124 in with the program on this architecture. On unix, it is usually
125 empty. It is typically used to include emulations of unix calls
126 or other facilities. For perl on OS/2, for example, this would
129 asctime_r_proto (d_asctime_r.U):
130 This variable encodes the prototype of asctime_r.
131 It is zero if d_asctime_r is undef, and one of the
132 REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
136 This variable is used internally by Configure to determine the
137 full pathname (if any) of the awk program. After Configure runs,
138 the value is reset to a plain "awk" and is not useful.
141 The base revision level of this package, from the .package file.
144 This variable is defined but not used by Configure.
145 The value is a plain '' and is not useful.
148 This variable holds the name of the directory in which the user wants
149 to put publicly executable images for the package in question. It
150 is most often a local directory such as /usr/local/bin. Programs using
151 this variable must be prepared to deal with ~name substitution.
154 This is the same as the bin variable, but is filename expanded at
155 configuration time, for use in your makefiles.
158 This variable is used internally by Configure to determine the
159 full pathname (if any) of the bison program. After Configure runs,
160 the value is reset to a plain "bison" and is not useful.
163 This variable is used internally by Configure to determine the
164 full pathname (if any) of the byacc program. After Configure runs,
165 the value is reset to a plain "byacc" and is not useful.
167 byteorder (byteorder.U):
168 This variable holds the byte order in a UV. In the following,
169 larger digits indicate more significance. The variable byteorder
170 is either 4321 on a big-endian machine, or 1234 on a little-endian,
171 or 87654321 on a Cray ... or 3412 with weird order !
174 This variable contains the \c string if that is what causes the echo
175 command to suppress newline. Otherwise it is null. Correct usage is
176 $echo $n "prompt for a question: $c".
178 castflags (d_castneg.U):
179 This variable contains a flag that precise difficulties the
180 compiler has casting odd floating values to unsigned long:
182 1 = couldn't cast < 0
183 2 = couldn't cast >= 0x80000000
184 4 = couldn't cast in argument expression list
187 This variable is used internally by Configure to determine the
188 full pathname (if any) of the cat program. After Configure runs,
189 the value is reset to a plain "cat" and is not useful.
192 This variable holds the name of a command to execute a C compiler which
193 can resolve multiple global references that happen to have the same
194 name. Usual values are 'cc' and 'gcc'.
195 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
197 cccdlflags (dlsrc.U):
198 This variable contains any special flags that might need to be
199 passed with 'cc -c' to compile modules to be used to create a shared
200 library that will be used for dynamic loading. For hpux, this
201 should be +z. It is up to the makefile to use it.
204 This variable contains any special flags that might need to be
205 passed to cc to link with a shared library for dynamic loading.
206 It is up to the makefile to use it. For sunos 4.1, it should
210 This variable contains any additional C compiler flags desired by
211 the user. It is up to the Makefile to use this.
213 ccflags_uselargefiles (uselfs.U):
214 This variable contains the compiler flags needed by large file builds
215 and added to ccflags by hints files.
218 This can set either by hints files or by Configure. If using
219 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
220 Some platforms, however, make good use of this by storing the
221 flavor of the C compiler being used here. For example if using
222 the Sun WorkShop suite, ccname will be 'workshop'.
224 ccsymbols (Cppsym.U):
225 The variable contains the symbols defined by the C compiler alone.
226 The symbols defined by cpp or by cc when it calls cpp are not in
227 this list, see cppsymbols and cppccsymbols.
228 The list is a space-separated list of symbol=value tokens.
230 ccversion (Checkcc.U):
231 This can set either by hints files or by Configure. If using
232 a (non-gcc) vendor cc, this variable may contain a version for
236 Login name of the person who ran the Configure script and answered the
237 questions. This is used to tag both config.sh and config_h.SH.
239 cf_email (cf_email.U):
240 Electronic mail address of the person who ran Configure. This can be
241 used by units that require the user's e-mail, like MailList.U.
244 Holds the output of the "date" command when the configuration file was
245 produced. This is used to tag both config.sh and config_h.SH.
247 charsize (charsize.U):
248 This variable contains the value of the CHARSIZE symbol, which
249 indicates to the C program how many bytes there are in a character.
252 This variable is defined but not used by Configure.
253 The value is a plain '' and is not useful.
256 This variable is used internally by Configure to determine the
257 full pathname (if any) of the chmod program. After Configure runs,
258 the value is reset to a plain "chmod" and is not useful.
261 This variable is defined but not used by Configure.
262 The value is a plain '' and is not useful.
264 clocktype (d_times.U):
265 This variable holds the type returned by times(). It can be long,
266 or clock_t on BSD sites (in which case <sys/types.h> should be
270 This variable is used internally by Configure to determine the
271 full pathname (if any) of the comm program. After Configure runs,
272 the value is reset to a plain "comm" and is not useful.
275 This variable is defined but not used by Configure.
276 The value is a plain '' and is not useful.
278 contains (contains.U):
279 This variable holds the command to do a grep with a proper return
280 status. On most sane systems it is simply "grep". On insane systems
281 it is a grep followed by a cat followed by a test. This variable
282 is primarily for the use of other Configure units.
285 This variable is used internally by Configure to determine the
286 full pathname (if any) of the cp program. After Configure runs,
287 the value is reset to a plain "cp" and is not useful.
290 This variable is defined but not used by Configure.
291 The value is a plain '' and is not useful.
294 This variable is used internally by Configure to determine the
295 full pathname (if any) of the cpp program. After Configure runs,
296 the value is reset to a plain "cpp" and is not useful.
298 cpp_stuff (cpp_stuff.U):
299 This variable contains an identification of the concatenation mechanism
300 used by the C preprocessor.
302 cppccsymbols (Cppsym.U):
303 The variable contains the symbols defined by the C compiler
304 when it calls cpp. The symbols defined by the cc alone or cpp
305 alone are not in this list, see ccsymbols and cppsymbols.
306 The list is a space-separated list of symbol=value tokens.
308 cppflags (ccflags.U):
309 This variable holds the flags that will be passed to the C pre-
310 processor. It is up to the Makefile to use it.
312 cpplast (cppstdin.U):
313 This variable has the same functionality as cppminus, only it applies
314 to cpprun and not cppstdin.
316 cppminus (cppstdin.U):
317 This variable contains the second part of the string which will invoke
318 the C preprocessor on the standard input and produce to standard
319 output. This variable will have the value "-" if cppstdin needs
320 a minus to specify standard input, otherwise the value is "".
323 This variable contains the command which will invoke a C preprocessor
324 on standard input and put the output to stdout. It is guaranteed not
325 to be a wrapper and may be a null string if no preprocessor can be
326 made directly available. This preprocessor might be different from the
327 one used by the C compiler. Don't forget to append cpplast after the
328 preprocessor options.
330 cppstdin (cppstdin.U):
331 This variable contains the command which will invoke the C
332 preprocessor on standard input and put the output to stdout.
333 It is primarily used by other Configure units that ask about
334 preprocessor symbols.
336 cppsymbols (Cppsym.U):
337 The variable contains the symbols defined by the C preprocessor
338 alone. The symbols defined by cc or by cc when it calls cpp are
339 not in this list, see ccsymbols and cppccsymbols.
340 The list is a space-separated list of symbol=value tokens.
342 crypt_r_proto (d_crypt_r.U):
343 This variable encodes the prototype of crypt_r.
344 It is zero if d_crypt_r is undef, and one of the
345 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
348 cryptlib (d_crypt.U):
349 This variable holds -lcrypt or the path to a libcrypt.a archive if
350 the crypt() function is not defined in the standard C library. It is
351 up to the Makefile to use this.
354 This variable is used internally by Configure to determine the
355 full pathname (if any) of the csh program. After Configure runs,
356 the value is reset to a plain "csh" and is not useful.
358 ctermid_r_proto (d_ctermid_r.U):
359 This variable encodes the prototype of ctermid_r.
360 It is zero if d_ctermid_r is undef, and one of the
361 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
364 ctime_r_proto (d_ctime_r.U):
365 This variable encodes the prototype of ctime_r.
366 It is zero if d_ctime_r is undef, and one of the
367 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
370 d__fwalk (d__fwalk.U):
371 This variable conditionally defines HAS__FWALK if _fwalk() is
372 available to apply a function to all the file handles.
374 d_access (d_access.U):
375 This variable conditionally defines HAS_ACCESS if the access() system
376 call is available to check for access permissions using real IDs.
378 d_accessx (d_accessx.U):
379 This variable conditionally defines the HAS_ACCESSX symbol, which
380 indicates to the C program that the accessx() routine is available.
383 This variable conditionally defines the HAS_AINTL symbol, which
384 indicates to the C program that the aintl() routine is available.
385 If copysignl is also present we can emulate modfl.
388 This variable conditionally defines the HAS_ALARM symbol, which
389 indicates to the C program that the alarm() routine is available.
391 d_archlib (archlib.U):
392 This variable conditionally defines ARCHLIB to hold the pathname
393 of architecture-dependent library files for $package. If
394 $archlib is the same as $privlib, then this is set to undef.
396 d_asctime_r (d_asctime_r.U):
397 This variable conditionally defines the HAS_ASCTIME_R symbol,
398 which indicates to the C program that the asctime_r()
399 routine is available.
402 This variable conditionally defines the HAS_ATOLF symbol, which
403 indicates to the C program that the atolf() routine is available.
406 This variable conditionally defines the HAS_ATOLL symbol, which
407 indicates to the C program that the atoll() routine is available.
409 d_attribute_format (d_attribut_format.U):
410 This variable conditionally defines HASATTRIBUTE_FORMAT, which
411 indicates the C compiler can check for printf-like formats.
413 d_attribute_malloc (d_attribute_malloc.U):
414 This variable conditionally defines HASATTRIBUTE_MALLOC, which
415 indicates the C compiler can understand functions as having
416 malloc-like semantics.
418 d_attribute_nonnull (d_attribute_nonnull.U):
419 This variable conditionally defines HASATTRIBUTE_NONNULL, which
420 indicates that the C compiler can know that certain arguments
421 must not be NULL, and will check accordingly at compile time.
423 d_attribute_noreturn (d_attribute_noreturn.U):
424 This variable conditionally defines HASATTRIBUTE_NORETURN, which
425 indicates that the C compiler can know that certain functions
426 are guaranteed never to return.
428 d_attribute_pure (d_attribute_pure.U):
429 This variable conditionally defines HASATTRIBUTE_PURE, which
430 indicates that the C compiler can know that certain functions
431 are "pure" functions, meaning that they have no side effects, and
432 only rely on function input and/or global data for their results.
434 d_attribute_unused (d_attribute_unused.U):
435 This variable conditionally defines HASATTRIBUTE_UNUSED, which
436 indicates that the C compiler can know that certain variables
437 and arguments may not always be used, and to not throw warnings
438 if they don't get used.
440 d_attribute_warn_unused_result (d_attribute_warn_unused_result.U):
441 This variable conditionally defines
442 HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
443 compiler can know that certain functions have a return values
444 that must not be ignored, such as malloc() or open().
447 This variable conditionally defines the HAS_BCMP symbol if
448 the bcmp() routine is available to compare strings.
451 This variable conditionally defines the HAS_BCOPY symbol if
452 the bcopy() routine is available to copy strings.
455 This symbol conditionally defines the symbol BSD when running on a
458 d_bsdgetpgrp (d_getpgrp.U):
459 This variable conditionally defines USE_BSD_GETPGRP if
460 getpgrp needs one arguments whereas USG one needs none.
462 d_bsdsetpgrp (d_setpgrp.U):
463 This variable conditionally defines USE_BSD_SETPGRP if
464 setpgrp needs two arguments whereas USG one needs none.
465 See also d_setpgid for a POSIX interface.
467 d_builtin_choose_expr (d_builtin.U):
468 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
469 indicates that the compiler supports __builtin_choose_expr(x,y,z).
470 This built-in function is analogous to the "x?y:z" operator in C,
471 except that the expression returned has its type unaltered by
472 promotion rules. Also, the built-in function does not evaluate
473 the expression that was not chosen.
475 d_builtin_expect (d_builtin.U):
476 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
477 that the compiler supports __builtin_expect(exp,c). You may use
478 __builtin_expect to provide the compiler with branch prediction
482 This variable conditionally defines the HAS_BZERO symbol if
483 the bzero() routine is available to set memory to 0.
485 d_casti32 (d_casti32.U):
486 This variable conditionally defines CASTI32, which indicates
487 whether the C compiler can cast large floats to 32-bit ints.
489 d_castneg (d_castneg.U):
490 This variable conditionally defines CASTNEG, which indicates
491 wether the C compiler can cast negative float to unsigned.
493 d_charvspr (d_vprintf.U):
494 This variable conditionally defines CHARVSPRINTF if this system
495 has vsprintf returning type (char*). The trend seems to be to
496 declare it as "int vsprintf()".
499 This variable conditionally defines the HAS_CHOWN symbol, which
500 indicates to the C program that the chown() routine is available.
502 d_chroot (d_chroot.U):
503 This variable conditionally defines the HAS_CHROOT symbol, which
504 indicates to the C program that the chroot() routine is available.
506 d_chsize (d_chsize.U):
507 This variable conditionally defines the CHSIZE symbol, which
508 indicates to the C program that the chsize() routine is available
509 to truncate files. You might need a -lx to get this routine.
512 This variable conditionally defines the HAS_CLASS symbol, which
513 indicates to the C program that the class() routine is available.
515 d_clearenv (d_clearenv.U):
516 This variable conditionally defines the HAS_CLEARENV symbol, which
517 indicates to the C program that the clearenv () routine is available.
519 d_closedir (d_closedir.U):
520 This variable conditionally defines HAS_CLOSEDIR if closedir() is
523 d_cmsghdr_s (d_cmsghdr_s.U):
524 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
525 which indicates that the struct cmsghdr is supported.
528 This variable conditionally defines the HASCONST symbol, which
529 indicates to the C program that this C compiler knows about the
532 d_copysignl (d_copysignl.U):
533 This variable conditionally defines the HAS_COPYSIGNL symbol, which
534 indicates to the C program that the copysignl() routine is available.
535 If aintl is also present we can emulate modfl.
538 This variable conditionally defines the CRYPT symbol, which
539 indicates to the C program that the crypt() routine is available
540 to encrypt passwords and the like.
542 d_crypt_r (d_crypt_r.U):
543 This variable conditionally defines the HAS_CRYPT_R symbol,
544 which indicates to the C program that the crypt_r()
545 routine is available.
548 This variable conditionally defines the CSH symbol, which
549 indicates to the C program that the C-shell exists.
551 d_ctermid_r (d_ctermid_r.U):
552 This variable conditionally defines the HAS_CTERMID_R symbol,
553 which indicates to the C program that the ctermid_r()
554 routine is available.
556 d_ctime_r (d_ctime_r.U):
557 This variable conditionally defines the HAS_CTIME_R symbol,
558 which indicates to the C program that the ctime_r()
559 routine is available.
561 d_cuserid (d_cuserid.U):
562 This variable conditionally defines the HAS_CUSERID symbol, which
563 indicates to the C program that the cuserid() routine is available
564 to get character login names.
566 d_dbl_dig (d_dbl_dig.U):
567 This variable conditionally defines d_dbl_dig if this system's
568 header files provide DBL_DIG, which is the number of significant
569 digits in a double precision number.
571 d_dbminitproto (d_dbminitproto.U):
572 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
573 which indicates to the C program that the system provides
574 a prototype for the dbminit() function. Otherwise, it is
575 up to the program to supply one.
577 d_difftime (d_difftime.U):
578 This variable conditionally defines the HAS_DIFFTIME symbol, which
579 indicates to the C program that the difftime() routine is available.
582 This variable conditionally defines the HAS_DIRFD constant,
583 which indicates to the C program that dirfd() is available
584 to return the file descriptor of a directory stream.
586 d_dirnamlen (i_dirent.U):
587 This variable conditionally defines DIRNAMLEN, which indicates
588 to the C program that the length of directory entry names is
589 provided by a d_namelen field.
591 d_dlerror (d_dlerror.U):
592 This variable conditionally defines the HAS_DLERROR symbol, which
593 indicates to the C program that the dlerror() routine is available.
595 d_dlopen (d_dlopen.U):
596 This variable conditionally defines the HAS_DLOPEN symbol, which
597 indicates to the C program that the dlopen() routine is available.
599 d_dlsymun (d_dlsymun.U):
600 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
601 indicates that we need to prepend an underscore to the symbol
602 name before calling dlsym().
604 d_dosuid (d_dosuid.U):
605 This variable conditionally defines the symbol DOSUID, which
606 tells the C program that it should insert setuid emulation code
607 on hosts which have setuid #! scripts disabled.
609 d_drand48_r (d_drand48_r.U):
610 This variable conditionally defines the HAS_DRAND48_R symbol,
611 which indicates to the C program that the drand48_r()
612 routine is available.
614 d_drand48proto (d_drand48proto.U):
615 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
616 which indicates to the C program that the system provides
617 a prototype for the drand48() function. Otherwise, it is
618 up to the program to supply one.
621 This variable conditionally defines HAS_DUP2 if dup2() is
622 available to duplicate file descriptors.
624 d_eaccess (d_eaccess.U):
625 This variable conditionally defines the HAS_EACCESS symbol, which
626 indicates to the C program that the eaccess() routine is available.
628 d_endgrent (d_endgrent.U):
629 This variable conditionally defines the HAS_ENDGRENT symbol, which
630 indicates to the C program that the endgrent() routine is available
631 for sequential access of the group database.
633 d_endgrent_r (d_endgrent_r.U):
634 This variable conditionally defines the HAS_ENDGRENT_R symbol,
635 which indicates to the C program that the endgrent_r()
636 routine is available.
638 d_endhent (d_endhent.U):
639 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
640 available to close whatever was being used for host queries.
642 d_endhostent_r (d_endhostent_r.U):
643 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
644 which indicates to the C program that the endhostent_r()
645 routine is available.
647 d_endnent (d_endnent.U):
648 This variable conditionally defines HAS_ENDNETENT if endnetent() is
649 available to close whatever was being used for network queries.
651 d_endnetent_r (d_endnetent_r.U):
652 This variable conditionally defines the HAS_ENDNETENT_R symbol,
653 which indicates to the C program that the endnetent_r()
654 routine is available.
656 d_endpent (d_endpent.U):
657 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
658 available to close whatever was being used for protocol queries.
660 d_endprotoent_r (d_endprotoent_r.U):
661 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
662 which indicates to the C program that the endprotoent_r()
663 routine is available.
665 d_endpwent (d_endpwent.U):
666 This variable conditionally defines the HAS_ENDPWENT symbol, which
667 indicates to the C program that the endpwent() routine is available
668 for sequential access of the passwd database.
670 d_endpwent_r (d_endpwent_r.U):
671 This variable conditionally defines the HAS_ENDPWENT_R symbol,
672 which indicates to the C program that the endpwent_r()
673 routine is available.
675 d_endsent (d_endsent.U):
676 This variable conditionally defines HAS_ENDSERVENT if endservent() is
677 available to close whatever was being used for service queries.
679 d_endservent_r (d_endservent_r.U):
680 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
681 which indicates to the C program that the endservent_r()
682 routine is available.
684 d_eofnblk (nblock_io.U):
685 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
686 when reading from a non-blocking I/O source.
689 This variable conditionally defines the symbols EUNICE and VAX, which
690 alerts the C program that it must deal with ideosyncracies of VMS.
692 d_faststdio (d_faststdio.U):
693 This variable conditionally defines the HAS_FAST_STDIO symbol,
694 which indicates to the C program that the "fast stdio" is available
695 to manipulate the stdio buffers directly.
697 d_fchdir (d_fchdir.U):
698 This variable conditionally defines the HAS_FCHDIR symbol, which
699 indicates to the C program that the fchdir() routine is available.
701 d_fchmod (d_fchmod.U):
702 This variable conditionally defines the HAS_FCHMOD symbol, which
703 indicates to the C program that the fchmod() routine is available
704 to change mode of opened files.
706 d_fchown (d_fchown.U):
707 This variable conditionally defines the HAS_FCHOWN symbol, which
708 indicates to the C program that the fchown() routine is available
709 to change ownership of opened files.
712 This variable conditionally defines the HAS_FCNTL symbol, and indicates
713 whether the fcntl() function exists
715 d_fcntl_can_lock (d_fcntl_can_lock.U):
716 This variable conditionally defines the FCNTL_CAN_LOCK symbol
717 and indicates whether file locking with fcntl() works.
719 d_fd_macros (d_fd_set.U):
720 This variable contains the eventual value of the HAS_FD_MACROS symbol,
721 which indicates if your C compiler knows about the macros which
722 manipulate an fd_set.
724 d_fd_set (d_fd_set.U):
725 This variable contains the eventual value of the HAS_FD_SET symbol,
726 which indicates if your C compiler knows about the fd_set typedef.
728 d_fds_bits (d_fd_set.U):
729 This variable contains the eventual value of the HAS_FDS_BITS symbol,
730 which indicates if your fd_set typedef contains the fds_bits member.
731 If you have an fd_set typedef, but the dweebs who installed it did
732 a half-fast job and neglected to provide the macros to manipulate
733 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
735 d_fgetpos (d_fgetpos.U):
736 This variable conditionally defines HAS_FGETPOS if fgetpos() is
737 available to get the file position indicator.
739 d_finite (d_finite.U):
740 This variable conditionally defines the HAS_FINITE symbol, which
741 indicates to the C program that the finite() routine is available.
743 d_finitel (d_finitel.U):
744 This variable conditionally defines the HAS_FINITEL symbol, which
745 indicates to the C program that the finitel() routine is available.
747 d_flexfnam (d_flexfnam.U):
748 This variable conditionally defines the FLEXFILENAMES symbol, which
749 indicates that the system supports filenames longer than 14 characters.
752 This variable conditionally defines HAS_FLOCK if flock() is
753 available to do file locking.
755 d_flockproto (d_flockproto.U):
756 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
757 which indicates to the C program that the system provides
758 a prototype for the flock() function. Otherwise, it is
759 up to the program to supply one.
762 This variable conditionally defines the HAS_FORK symbol, which
763 indicates to the C program that the fork() routine is available.
765 d_fp_class (d_fp_class.U):
766 This variable conditionally defines the HAS_FP_CLASS symbol, which
767 indicates to the C program that the fp_class() routine is available.
769 d_fpathconf (d_pathconf.U):
770 This variable conditionally defines the HAS_FPATHCONF symbol, which
771 indicates to the C program that the pathconf() routine is available
772 to determine file-system related limits and options associated
773 with a given open file descriptor.
775 d_fpclass (d_fpclass.U):
776 This variable conditionally defines the HAS_FPCLASS symbol, which
777 indicates to the C program that the fpclass() routine is available.
779 d_fpclassify (d_fpclassify.U):
780 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
781 indicates to the C program that the fpclassify() routine is available.
783 d_fpclassl (d_fpclassl.U):
784 This variable conditionally defines the HAS_FPCLASSL symbol, which
785 indicates to the C program that the fpclassl() routine is available.
787 d_fpos64_t (d_fpos64_t.U):
788 This symbol will be defined if the C compiler supports fpos64_t.
790 d_frexpl (d_frexpl.U):
791 This variable conditionally defines the HAS_FREXPL symbol, which
792 indicates to the C program that the frexpl() routine is available.
794 d_fs_data_s (d_fs_data_s.U):
795 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
796 which indicates that the struct fs_data is supported.
798 d_fseeko (d_fseeko.U):
799 This variable conditionally defines the HAS_FSEEKO symbol, which
800 indicates to the C program that the fseeko() routine is available.
802 d_fsetpos (d_fsetpos.U):
803 This variable conditionally defines HAS_FSETPOS if fsetpos() is
804 available to set the file position indicator.
806 d_fstatfs (d_fstatfs.U):
807 This variable conditionally defines the HAS_FSTATFS symbol, which
808 indicates to the C program that the fstatfs() routine is available.
810 d_fstatvfs (d_statvfs.U):
811 This variable conditionally defines the HAS_FSTATVFS symbol, which
812 indicates to the C program that the fstatvfs() routine is available.
815 This variable conditionally defines the HAS_FSYNC symbol, which
816 indicates to the C program that the fsync() routine is available.
818 d_ftello (d_ftello.U):
819 This variable conditionally defines the HAS_FTELLO symbol, which
820 indicates to the C program that the ftello() routine is available.
823 This variable conditionally defines the HAS_FTIME symbol, which indicates
824 that the ftime() routine exists. The ftime() routine is basically
825 a sub-second accuracy clock.
827 d_futimes (f_futimes.U):
828 This variable conditionally defines the HAS_FUTIMES symbol, which
829 indicates to the C program that the futimes() routine is available.
831 d_Gconvert (d_gconvert.U):
832 This variable holds what Gconvert is defined as to convert
833 floating point numbers into strings. By default, Configure
834 sets this macro to use the first of gconvert, gcvt, or sprintf
835 that pass sprintf-%g-like behaviour tests. If perl is using
836 long doubles, the macro uses the first of the following
837 functions that pass Configure's tests: qgcvt, sprintf (if
838 Configure knows how to make sprintf format long doubles--see
839 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
840 The gconvert_preference and gconvert_ld_preference variables
841 can be used to alter Configure's preferences, for doubles and
842 long doubles, respectively. If present, they contain a
843 space-separated list of one or more of the above function
844 names in the order they should be tried.
846 d_Gconvert may be set to override Configure with a platform-
847 specific function. If this function expects a double, a
848 different value may need to be set by the uselongdouble.cbu
849 call-back unit so that long doubles can be formatted without
852 d_getcwd (d_getcwd.U):
853 This variable conditionally defines the HAS_GETCWD symbol, which
854 indicates to the C program that the getcwd() routine is available
855 to get the current working directory.
857 d_getespwnam (d_getespwnam.U):
858 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
859 available to retrieve enchanced (shadow) password entries by name.
861 d_getfsstat (d_getfsstat.U):
862 This variable conditionally defines the HAS_GETFSSTAT symbol, which
863 indicates to the C program that the getfsstat() routine is available.
865 d_getgrent (d_getgrent.U):
866 This variable conditionally defines the HAS_GETGRENT symbol, which
867 indicates to the C program that the getgrent() routine is available
868 for sequential access of the group database.
870 d_getgrent_r (d_getgrent_r.U):
871 This variable conditionally defines the HAS_GETGRENT_R symbol,
872 which indicates to the C program that the getgrent_r()
873 routine is available.
875 d_getgrgid_r (d_getgrgid_r.U):
876 This variable conditionally defines the HAS_GETGRGID_R symbol,
877 which indicates to the C program that the getgrgid_r()
878 routine is available.
880 d_getgrnam_r (d_getgrnam_r.U):
881 This variable conditionally defines the HAS_GETGRNAM_R symbol,
882 which indicates to the C program that the getgrnam_r()
883 routine is available.
885 d_getgrps (d_getgrps.U):
886 This variable conditionally defines the HAS_GETGROUPS symbol, which
887 indicates to the C program that the getgroups() routine is available
888 to get the list of process groups.
890 d_gethbyaddr (d_gethbyad.U):
891 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
892 indicates to the C program that the gethostbyaddr() routine is available
893 to look up hosts by their IP addresses.
895 d_gethbyname (d_gethbynm.U):
896 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
897 indicates to the C program that the gethostbyname() routine is available
898 to look up host names in some data base or other.
900 d_gethent (d_gethent.U):
901 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
902 available to look up host names in some data base or another.
904 d_gethname (d_gethname.U):
905 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
906 indicates to the C program that the gethostname() routine may be
907 used to derive the host name.
909 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
910 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
911 which indicates to the C program that the gethostbyaddr_r()
912 routine is available.
914 d_gethostbyname_r (d_gethostbyname_r.U):
915 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
916 which indicates to the C program that the gethostbyname_r()
917 routine is available.
919 d_gethostent_r (d_gethostent_r.U):
920 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
921 which indicates to the C program that the gethostent_r()
922 routine is available.
924 d_gethostprotos (d_gethostprotos.U):
925 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
926 which indicates to the C program that <netdb.h> supplies
927 prototypes for the various gethost*() functions.
928 See also netdbtype.U for probing for various netdb types.
930 d_getitimer (d_getitimer.U):
931 This variable conditionally defines the HAS_GETITIMER symbol, which
932 indicates to the C program that the getitimer() routine is available.
934 d_getlogin (d_getlogin.U):
935 This variable conditionally defines the HAS_GETLOGIN symbol, which
936 indicates to the C program that the getlogin() routine is available
937 to get the login name.
939 d_getlogin_r (d_getlogin_r.U):
940 This variable conditionally defines the HAS_GETLOGIN_R symbol,
941 which indicates to the C program that the getlogin_r()
942 routine is available.
944 d_getmnt (d_getmnt.U):
945 This variable conditionally defines the HAS_GETMNT symbol, which
946 indicates to the C program that the getmnt() routine is available
947 to retrieve one or more mount info blocks by filename.
949 d_getmntent (d_getmntent.U):
950 This variable conditionally defines the HAS_GETMNTENT symbol, which
951 indicates to the C program that the getmntent() routine is available
952 to iterate through mounted files to get their mount info.
954 d_getnbyaddr (d_getnbyad.U):
955 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
956 indicates to the C program that the getnetbyaddr() routine is available
957 to look up networks by their IP addresses.
959 d_getnbyname (d_getnbynm.U):
960 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
961 indicates to the C program that the getnetbyname() routine is available
962 to look up networks by their names.
964 d_getnent (d_getnent.U):
965 This variable conditionally defines HAS_GETNETENT if getnetent() is
966 available to look up network names in some data base or another.
968 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
969 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
970 which indicates to the C program that the getnetbyaddr_r()
971 routine is available.
973 d_getnetbyname_r (d_getnetbyname_r.U):
974 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
975 which indicates to the C program that the getnetbyname_r()
976 routine is available.
978 d_getnetent_r (d_getnetent_r.U):
979 This variable conditionally defines the HAS_GETNETENT_R symbol,
980 which indicates to the C program that the getnetent_r()
981 routine is available.
983 d_getnetprotos (d_getnetprotos.U):
984 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
985 which indicates to the C program that <netdb.h> supplies
986 prototypes for the various getnet*() functions.
987 See also netdbtype.U for probing for various netdb types.
989 d_getpagsz (d_getpagsz.U):
990 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
991 is available to get the system page size.
993 d_getpbyname (d_getprotby.U):
994 This variable conditionally defines the HAS_GETPROTOBYNAME
995 symbol, which indicates to the C program that the
996 getprotobyname() routine is available to look up protocols
999 d_getpbynumber (d_getprotby.U):
1000 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1001 symbol, which indicates to the C program that the
1002 getprotobynumber() routine is available to look up protocols
1005 d_getpent (d_getpent.U):
1006 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1007 available to look up protocols in some data base or another.
1009 d_getpgid (d_getpgid.U):
1010 This variable conditionally defines the HAS_GETPGID symbol, which
1011 indicates to the C program that the getpgid(pid) function
1012 is available to get the process group id.
1014 d_getpgrp2 (d_getpgrp2.U):
1015 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1016 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1017 is available to get the current process group.
1019 d_getpgrp (d_getpgrp.U):
1020 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1021 available to get the current process group.
1023 d_getppid (d_getppid.U):
1024 This variable conditionally defines the HAS_GETPPID symbol, which
1025 indicates to the C program that the getppid() routine is available
1026 to get the parent process ID.
1028 d_getprior (d_getprior.U):
1029 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1030 is available to get a process's priority.
1032 d_getprotobyname_r (d_getprotobyname_r.U):
1033 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1034 which indicates to the C program that the getprotobyname_r()
1035 routine is available.
1037 d_getprotobynumber_r (d_getprotobynumber_r.U):
1038 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1039 which indicates to the C program that the getprotobynumber_r()
1040 routine is available.
1042 d_getprotoent_r (d_getprotoent_r.U):
1043 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1044 which indicates to the C program that the getprotoent_r()
1045 routine is available.
1047 d_getprotoprotos (d_getprotoprotos.U):
1048 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1049 which indicates to the C program that <netdb.h> supplies
1050 prototypes for the various getproto*() functions.
1051 See also netdbtype.U for probing for various netdb types.
1053 d_getprpwnam (d_getprpwnam.U):
1054 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1055 available to retrieve protected (shadow) password entries by name.
1057 d_getpwent (d_getpwent.U):
1058 This variable conditionally defines the HAS_GETPWENT symbol, which
1059 indicates to the C program that the getpwent() routine is available
1060 for sequential access of the passwd database.
1062 d_getpwent_r (d_getpwent_r.U):
1063 This variable conditionally defines the HAS_GETPWENT_R symbol,
1064 which indicates to the C program that the getpwent_r()
1065 routine is available.
1067 d_getpwnam_r (d_getpwnam_r.U):
1068 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1069 which indicates to the C program that the getpwnam_r()
1070 routine is available.
1072 d_getpwuid_r (d_getpwuid_r.U):
1073 This variable conditionally defines the HAS_GETPWUID_R symbol,
1074 which indicates to the C program that the getpwuid_r()
1075 routine is available.
1077 d_getsbyname (d_getsrvby.U):
1078 This variable conditionally defines the HAS_GETSERVBYNAME
1079 symbol, which indicates to the C program that the
1080 getservbyname() routine is available to look up services
1083 d_getsbyport (d_getsrvby.U):
1084 This variable conditionally defines the HAS_GETSERVBYPORT
1085 symbol, which indicates to the C program that the
1086 getservbyport() routine is available to look up services
1089 d_getsent (d_getsent.U):
1090 This variable conditionally defines HAS_GETSERVENT if getservent() is
1091 available to look up network services in some data base or another.
1093 d_getservbyname_r (d_getservbyname_r.U):
1094 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1095 which indicates to the C program that the getservbyname_r()
1096 routine is available.
1098 d_getservbyport_r (d_getservbyport_r.U):
1099 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1100 which indicates to the C program that the getservbyport_r()
1101 routine is available.
1103 d_getservent_r (d_getservent_r.U):
1104 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1105 which indicates to the C program that the getservent_r()
1106 routine is available.
1108 d_getservprotos (d_getservprotos.U):
1109 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1110 which indicates to the C program that <netdb.h> supplies
1111 prototypes for the various getserv*() functions.
1112 See also netdbtype.U for probing for various netdb types.
1114 d_getspnam (d_getspnam.U):
1115 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1116 available to retrieve SysV shadow password entries by name.
1118 d_getspnam_r (d_getspnam_r.U):
1119 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1120 which indicates to the C program that the getspnam_r()
1121 routine is available.
1123 d_gettimeod (d_ftime.U):
1124 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1125 indicates that the gettimeofday() system call exists (to obtain a
1126 sub-second accuracy clock). You should probably include <sys/resource.h>.
1128 d_gmtime_r (d_gmtime_r.U):
1129 This variable conditionally defines the HAS_GMTIME_R symbol,
1130 which indicates to the C program that the gmtime_r()
1131 routine is available.
1133 d_gnulibc (d_gnulibc.U):
1134 Defined if we're dealing with the GNU C Library.
1136 d_grpasswd (i_grp.U):
1137 This variable conditionally defines GRPASSWD, which indicates
1138 that struct group in <grp.h> contains gr_passwd.
1140 d_hasmntopt (d_hasmntopt.U):
1141 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1142 indicates to the C program that the hasmntopt() routine is available
1143 to query the mount options of file systems.
1145 d_htonl (d_htonl.U):
1146 This variable conditionally defines HAS_HTONL if htonl() and its
1147 friends are available to do network order byte swapping.
1149 d_ilogbl (d_ilogbl.U):
1150 This variable conditionally defines the HAS_ILOGBL symbol, which
1151 indicates to the C program that the ilogbl() routine is available.
1152 If scalbnl is also present we can emulate frexpl.
1154 d_inc_version_list (inc_version_list.U):
1155 This variable conditionally defines PERL_INC_VERSION_LIST.
1156 It is set to undef when PERL_INC_VERSION_LIST is empty.
1158 d_index (d_strchr.U):
1159 This variable conditionally defines HAS_INDEX if index() and
1160 rindex() are available for string searching.
1162 d_inetaton (d_inetaton.U):
1163 This variable conditionally defines the HAS_INET_ATON symbol, which
1164 indicates to the C program that the inet_aton() function is available
1165 to parse IP address "dotted-quad" strings.
1167 d_int64_t (d_int64_t.U):
1168 This symbol will be defined if the C compiler supports int64_t.
1170 d_isascii (d_isascii.U):
1171 This variable conditionally defines the HAS_ISASCII constant,
1172 which indicates to the C program that isascii() is available.
1174 d_isfinite (d_isfinite.U):
1175 This variable conditionally defines the HAS_ISFINITE symbol, which
1176 indicates to the C program that the isfinite() routine is available.
1178 d_isinf (d_isinf.U):
1179 This variable conditionally defines the HAS_ISINF symbol, which
1180 indicates to the C program that the isinf() routine is available.
1182 d_isnan (d_isnan.U):
1183 This variable conditionally defines the HAS_ISNAN symbol, which
1184 indicates to the C program that the isnan() routine is available.
1186 d_isnanl (d_isnanl.U):
1187 This variable conditionally defines the HAS_ISNANL symbol, which
1188 indicates to the C program that the isnanl() routine is available.
1190 d_killpg (d_killpg.U):
1191 This variable conditionally defines the HAS_KILLPG symbol, which
1192 indicates to the C program that the killpg() routine is available
1193 to kill process groups.
1195 d_lchown (d_lchown.U):
1196 This variable conditionally defines the HAS_LCHOWN symbol, which
1197 indicates to the C program that the lchown() routine is available
1198 to operate on a symbolic link (instead of following the link).
1200 d_ldbl_dig (d_ldbl_dig.U):
1201 This variable conditionally defines d_ldbl_dig if this system's
1202 header files provide LDBL_DIG, which is the number of significant
1203 digits in a long double precision number.
1206 This variable conditionally defines HAS_LINK if link() is
1207 available to create hard links.
1209 d_localtime_r (d_localtime_r.U):
1210 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1211 which indicates to the C program that the localtime_r()
1212 routine is available.
1214 d_locconv (d_locconv.U):
1215 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1216 available for numeric and monetary formatting conventions.
1218 d_lockf (d_lockf.U):
1219 This variable conditionally defines HAS_LOCKF if lockf() is
1220 available to do file locking.
1222 d_longdbl (d_longdbl.U):
1223 This variable conditionally defines HAS_LONG_DOUBLE if
1224 the long double type is supported.
1226 d_longlong (d_longlong.U):
1227 This variable conditionally defines HAS_LONG_LONG if
1228 the long long type is supported.
1230 d_lseekproto (d_lseekproto.U):
1231 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1232 which indicates to the C program that the system provides
1233 a prototype for the lseek() function. Otherwise, it is
1234 up to the program to supply one.
1236 d_lstat (d_lstat.U):
1237 This variable conditionally defines HAS_LSTAT if lstat() is
1238 available to do file stats on symbolic links.
1240 d_madvise (d_madvise.U):
1241 This variable conditionally defines HAS_MADVISE if madvise() is
1242 available to map a file into memory.
1244 d_malloc_size (d_malloc_size.U):
1245 This symbol, if defined, indicates that the malloc_size
1246 routine is available for use.
1248 d_malloc_good_size (d_malloc_good_size.U):
1249 This symbol, if defined, indicates that the malloc_good_size
1250 routine is available for use.
1252 d_mblen (d_mblen.U):
1253 This variable conditionally defines the HAS_MBLEN symbol, which
1254 indicates to the C program that the mblen() routine is available
1255 to find the number of bytes in a multibye character.
1257 d_mbstowcs (d_mbstowcs.U):
1258 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1259 indicates to the C program that the mbstowcs() routine is available
1260 to convert a multibyte string into a wide character string.
1262 d_mbtowc (d_mbtowc.U):
1263 This variable conditionally defines the HAS_MBTOWC symbol, which
1264 indicates to the C program that the mbtowc() routine is available
1265 to convert multibyte to a wide character.
1267 d_memchr (d_memchr.U):
1268 This variable conditionally defines the HAS_MEMCHR symbol, which
1269 indicates to the C program that the memchr() routine is available
1270 to locate characters within a C string.
1272 d_memcmp (d_memcmp.U):
1273 This variable conditionally defines the HAS_MEMCMP symbol, which
1274 indicates to the C program that the memcmp() routine is available
1275 to compare blocks of memory.
1277 d_memcpy (d_memcpy.U):
1278 This variable conditionally defines the HAS_MEMCPY symbol, which
1279 indicates to the C program that the memcpy() routine is available
1280 to copy blocks of memory.
1282 d_memmove (d_memmove.U):
1283 This variable conditionally defines the HAS_MEMMOVE symbol, which
1284 indicates to the C program that the memmove() routine is available
1285 to copy potentatially overlapping blocks of memory.
1287 d_memset (d_memset.U):
1288 This variable conditionally defines the HAS_MEMSET symbol, which
1289 indicates to the C program that the memset() routine is available
1290 to set blocks of memory.
1292 d_mkdir (d_mkdir.U):
1293 This variable conditionally defines the HAS_MKDIR symbol, which
1294 indicates to the C program that the mkdir() routine is available
1295 to create directories..
1297 d_mkdtemp (d_mkdtemp.U):
1298 This variable conditionally defines the HAS_MKDTEMP symbol, which
1299 indicates to the C program that the mkdtemp() routine is available
1300 to exclusively create a uniquely named temporary directory.
1302 d_mkfifo (d_mkfifo.U):
1303 This variable conditionally defines the HAS_MKFIFO symbol, which
1304 indicates to the C program that the mkfifo() routine is available.
1306 d_mkstemp (d_mkstemp.U):
1307 This variable conditionally defines the HAS_MKSTEMP symbol, which
1308 indicates to the C program that the mkstemp() routine is available
1309 to exclusively create and open a uniquely named temporary file.
1311 d_mkstemps (d_mkstemps.U):
1312 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1313 indicates to the C program that the mkstemps() routine is available
1314 to exclusively create and open a uniquely named (with a suffix)
1317 d_mktime (d_mktime.U):
1318 This variable conditionally defines the HAS_MKTIME symbol, which
1319 indicates to the C program that the mktime() routine is available.
1322 This variable conditionally defines HAS_MMAP if mmap() is
1323 available to map a file into memory.
1325 d_modfl (d_modfl.U):
1326 This variable conditionally defines the HAS_MODFL symbol, which
1327 indicates to the C program that the modfl() routine is available.
1329 d_modfl_pow32_bug (d_modfl.U):
1330 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1331 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1332 For example from 4294967303.150000 one would get 4294967302.000000
1333 and 1.150000. The bug has been seen in certain versions of glibc,
1334 release 2.2.2 is known to be okay.
1336 d_modflproto (d_modfl.U):
1337 This symbol, if defined, indicates that the system provides
1338 a prototype for the modfl() function. Otherwise, it is up
1339 to the program to supply one. C99 says it should be
1340 long double modfl(long double, long double *);
1342 d_mprotect (d_mprotect.U):
1343 This variable conditionally defines HAS_MPROTECT if mprotect() is
1344 available to modify the access protection of a memory mapped file.
1347 This variable conditionally defines the HAS_MSG symbol, which
1348 indicates that the entire msg*(2) library is present.
1350 d_msg_ctrunc (d_socket.U):
1351 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1352 which indicates that the MSG_CTRUNC is available. #ifdef is
1353 not enough because it may be an enum, glibc has been known to do this.
1355 d_msg_dontroute (d_socket.U):
1356 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1357 which indicates that the MSG_DONTROUTE is available. #ifdef is
1358 not enough because it may be an enum, glibc has been known to do this.
1360 d_msg_oob (d_socket.U):
1361 This variable conditionally defines the HAS_MSG_OOB symbol,
1362 which indicates that the MSG_OOB is available. #ifdef is
1363 not enough because it may be an enum, glibc has been known to do this.
1365 d_msg_peek (d_socket.U):
1366 This variable conditionally defines the HAS_MSG_PEEK symbol,
1367 which indicates that the MSG_PEEK is available. #ifdef is
1368 not enough because it may be an enum, glibc has been known to do this.
1370 d_msg_proxy (d_socket.U):
1371 This variable conditionally defines the HAS_MSG_PROXY symbol,
1372 which indicates that the MSG_PROXY is available. #ifdef is
1373 not enough because it may be an enum, glibc has been known to do this.
1375 d_msgctl (d_msgctl.U):
1376 This variable conditionally defines the HAS_MSGCTL symbol, which
1377 indicates to the C program that the msgctl() routine is available.
1379 d_msgget (d_msgget.U):
1380 This variable conditionally defines the HAS_MSGGET symbol, which
1381 indicates to the C program that the msgget() routine is available.
1383 d_msghdr_s (d_msghdr_s.U):
1384 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1385 which indicates that the struct msghdr is supported.
1387 d_msgrcv (d_msgrcv.U):
1388 This variable conditionally defines the HAS_MSGRCV symbol, which
1389 indicates to the C program that the msgrcv() routine is available.
1391 d_msgsnd (d_msgsnd.U):
1392 This variable conditionally defines the HAS_MSGSND symbol, which
1393 indicates to the C program that the msgsnd() routine is available.
1395 d_msync (d_msync.U):
1396 This variable conditionally defines HAS_MSYNC if msync() is
1397 available to synchronize a mapped file.
1399 d_munmap (d_munmap.U):
1400 This variable conditionally defines HAS_MUNMAP if munmap() is
1401 available to unmap a region mapped by mmap().
1403 d_mymalloc (mallocsrc.U):
1404 This variable conditionally defines MYMALLOC in case other parts
1405 of the source want to take special action if MYMALLOC is used.
1406 This may include different sorts of profiling or error detection.
1409 This variable conditionally defines the HAS_NICE symbol, which
1410 indicates to the C program that the nice() routine is available.
1412 d_nl_langinfo (d_nl_langinfo.U):
1413 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1414 indicates to the C program that the nl_langinfo() routine is available.
1416 d_nv_preserves_uv (perlxv.U):
1417 This variable indicates whether a variable of type nvtype
1418 can preserve all the bits a variable of type uvtype.
1420 d_nv_zero_is_allbits_zero (perlxv.U):
1421 This variable indicates whether a variable of type nvtype
1422 stores 0.0 in memory as all bits zero.
1424 d_off64_t (d_off64_t.U):
1425 This symbol will be defined if the C compiler supports off64_t.
1427 d_old_pthread_create_joinable (d_pthrattrj.U):
1428 This variable conditionally defines pthread_create_joinable.
1429 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1431 d_oldpthreads (usethreads.U):
1432 This variable conditionally defines the OLD_PTHREADS_API symbol,
1433 and indicates that Perl should be built to use the old
1434 draft POSIX threads API. This is only potentially meaningful if
1437 d_oldsock (d_socket.U):
1438 This variable conditionally defines the OLDSOCKET symbol, which
1439 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1441 d_open3 (d_open3.U):
1442 This variable conditionally defines the HAS_OPEN3 manifest constant,
1443 which indicates to the C program that the 3 argument version of
1444 the open(2) function is available.
1446 d_pathconf (d_pathconf.U):
1447 This variable conditionally defines the HAS_PATHCONF symbol, which
1448 indicates to the C program that the pathconf() routine is available
1449 to determine file-system related limits and options associated
1450 with a given filename.
1452 d_pause (d_pause.U):
1453 This variable conditionally defines the HAS_PAUSE symbol, which
1454 indicates to the C program that the pause() routine is available
1455 to suspend a process until a signal is received.
1457 d_perl_otherlibdirs (otherlibdirs.U):
1458 This variable conditionally defines PERL_OTHERLIBDIRS, which
1459 contains a colon-separated set of paths for the perl binary to
1460 include in @INC. See also otherlibdirs.
1462 d_phostname (d_gethname.U):
1463 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1464 contains the shell command which, when fed to popen(), may be
1465 used to derive the host name.
1468 This variable conditionally defines the HAS_PIPE symbol, which
1469 indicates to the C program that the pipe() routine is available
1470 to create an inter-process channel.
1473 This variable conditionally defines the HAS_POLL symbol, which
1474 indicates to the C program that the poll() routine is available
1475 to poll active file descriptors.
1477 d_portable (d_portable.U):
1478 This variable conditionally defines the PORTABLE symbol, which
1479 indicates to the C program that it should not assume that it is
1480 running on the machine it was compiled on.
1482 d_PRId64 (quadfio.U):
1483 This variable conditionally defines the PERL_PRId64 symbol, which
1484 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1486 d_PRIeldbl (longdblfio.U):
1487 This variable conditionally defines the PERL_PRIfldbl symbol, which
1488 indiciates that stdio has a symbol to print long doubles.
1490 d_PRIEUldbl (longdblfio.U):
1491 This variable conditionally defines the PERL_PRIfldbl symbol, which
1492 indiciates that stdio has a symbol to print long doubles.
1493 The 'U' in the name is to separate this from d_PRIeldbl so that even
1494 case-blind systems can see the difference.
1496 d_PRIfldbl (longdblfio.U):
1497 This variable conditionally defines the PERL_PRIfldbl symbol, which
1498 indiciates that stdio has a symbol to print long doubles.
1500 d_PRIFUldbl (longdblfio.U):
1501 This variable conditionally defines the PERL_PRIfldbl symbol, which
1502 indiciates that stdio has a symbol to print long doubles.
1503 The 'U' in the name is to separate this from d_PRIfldbl so that even
1504 case-blind systems can see the difference.
1506 d_PRIgldbl (longdblfio.U):
1507 This variable conditionally defines the PERL_PRIfldbl symbol, which
1508 indiciates that stdio has a symbol to print long doubles.
1510 d_PRIGUldbl (longdblfio.U):
1511 This variable conditionally defines the PERL_PRIfldbl symbol, which
1512 indiciates that stdio has a symbol to print long doubles.
1513 The 'U' in the name is to separate this from d_PRIgldbl so that even
1514 case-blind systems can see the difference.
1516 d_PRIi64 (quadfio.U):
1517 This variable conditionally defines the PERL_PRIi64 symbol, which
1518 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1520 d_PRIo64 (quadfio.U):
1521 This variable conditionally defines the PERL_PRIo64 symbol, which
1522 indiciates that stdio has a symbol to print 64-bit octal numbers.
1524 d_PRIu64 (quadfio.U):
1525 This variable conditionally defines the PERL_PRIu64 symbol, which
1526 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1529 d_PRIx64 (quadfio.U):
1530 This variable conditionally defines the PERL_PRIx64 symbol, which
1531 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1533 d_PRIXU64 (quadfio.U):
1534 This variable conditionally defines the PERL_PRIXU64 symbol, which
1535 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1536 The 'U' in the name is to separate this from d_PRIx64 so that even
1537 case-blind systems can see the difference.
1539 d_procselfexe (d_procselfexe.U):
1540 Defined if $procselfexe is symlink to the absolute
1541 pathname of the executing program.
1543 d_pthread_atfork (d_pthread_atfork.U):
1544 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1545 which indicates to the C program that the pthread_atfork()
1546 routine is available.
1548 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1549 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1550 pthread_attr_setscope() is available to set the contention scope
1551 attribute of a thread attribute object.
1553 d_pthread_yield (d_pthread_y.U):
1554 This variable conditionally defines the HAS_PTHREAD_YIELD
1555 symbol if the pthread_yield routine is available to yield
1556 the execution of the current thread.
1559 This variable conditionally defines PWAGE, which indicates
1560 that struct passwd contains pw_age.
1562 d_pwchange (i_pwd.U):
1563 This variable conditionally defines PWCHANGE, which indicates
1564 that struct passwd contains pw_change.
1566 d_pwclass (i_pwd.U):
1567 This variable conditionally defines PWCLASS, which indicates
1568 that struct passwd contains pw_class.
1570 d_pwcomment (i_pwd.U):
1571 This variable conditionally defines PWCOMMENT, which indicates
1572 that struct passwd contains pw_comment.
1574 d_pwexpire (i_pwd.U):
1575 This variable conditionally defines PWEXPIRE, which indicates
1576 that struct passwd contains pw_expire.
1578 d_pwgecos (i_pwd.U):
1579 This variable conditionally defines PWGECOS, which indicates
1580 that struct passwd contains pw_gecos.
1582 d_pwpasswd (i_pwd.U):
1583 This variable conditionally defines PWPASSWD, which indicates
1584 that struct passwd contains pw_passwd.
1586 d_pwquota (i_pwd.U):
1587 This variable conditionally defines PWQUOTA, which indicates
1588 that struct passwd contains pw_quota.
1590 d_qgcvt (d_qgcvt.U):
1591 This variable conditionally defines the HAS_QGCVT symbol, which
1592 indicates to the C program that the qgcvt() routine is available.
1594 d_quad (quadtype.U):
1595 This variable, if defined, tells that there's a 64-bit integer type,
1598 d_random_r (d_random_r.U):
1599 This variable conditionally defines the HAS_RANDOM_R symbol,
1600 which indicates to the C program that the random_r()
1601 routine is available.
1603 d_readdir64_r (d_readdir64_r.U):
1604 This variable conditionally defines the HAS_READDIR64_R symbol,
1605 which indicates to the C program that the readdir64_r()
1606 routine is available.
1608 d_readdir (d_readdir.U):
1609 This variable conditionally defines HAS_READDIR if readdir() is
1610 available to read directory entries.
1612 d_readdir_r (d_readdir_r.U):
1613 This variable conditionally defines the HAS_READDIR_R symbol,
1614 which indicates to the C program that the readdir_r()
1615 routine is available.
1617 d_readlink (d_readlink.U):
1618 This variable conditionally defines the HAS_READLINK symbol, which
1619 indicates to the C program that the readlink() routine is available
1620 to read the value of a symbolic link.
1622 d_readv (d_readv.U):
1623 This variable conditionally defines the HAS_READV symbol, which
1624 indicates to the C program that the readv() routine is available.
1626 d_recvmsg (d_recvmsg.U):
1627 This variable conditionally defines the HAS_RECVMSG symbol, which
1628 indicates to the C program that the recvmsg() routine is available.
1630 d_rename (d_rename.U):
1631 This variable conditionally defines the HAS_RENAME symbol, which
1632 indicates to the C program that the rename() routine is available
1635 d_rewinddir (d_readdir.U):
1636 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1639 d_rmdir (d_rmdir.U):
1640 This variable conditionally defines HAS_RMDIR if rmdir() is
1641 available to remove directories.
1643 d_safebcpy (d_safebcpy.U):
1644 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1645 the bcopy() routine can do overlapping copies. Normally, you
1646 should probably use memmove().
1648 d_safemcpy (d_safemcpy.U):
1649 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1650 the memcpy() routine can do overlapping copies.
1651 For overlapping copies, memmove() should be used, if available.
1653 d_sanemcmp (d_sanemcmp.U):
1654 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1655 the memcpy() routine is available and can be used to compare relative
1656 magnitudes of chars with their high bits set.
1658 d_sbrkproto (d_sbrkproto.U):
1659 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1660 which indicates to the C program that the system provides
1661 a prototype for the sbrk() function. Otherwise, it is
1662 up to the program to supply one.
1664 d_scalbnl (d_scalbnl.U):
1665 This variable conditionally defines the HAS_SCALBNL symbol, which
1666 indicates to the C program that the scalbnl() routine is available.
1667 If ilogbl is also present we can emulate frexpl.
1669 d_sched_yield (d_pthread_y.U):
1670 This variable conditionally defines the HAS_SCHED_YIELD
1671 symbol if the sched_yield routine is available to yield
1672 the execution of the current thread.
1674 d_scm_rights (d_socket.U):
1675 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1676 which indicates that the SCM_RIGHTS is available. #ifdef is
1677 not enough because it may be an enum, glibc has been known to do this.
1679 d_SCNfldbl (longdblfio.U):
1680 This variable conditionally defines the PERL_PRIfldbl symbol, which
1681 indiciates that stdio has a symbol to scan long doubles.
1683 d_seekdir (d_readdir.U):
1684 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1687 d_select (d_select.U):
1688 This variable conditionally defines HAS_SELECT if select() is
1689 available to select active file descriptors. A <sys/time.h>
1690 inclusion may be necessary for the timeout field.
1693 This variable conditionally defines the HAS_SEM symbol, which
1694 indicates that the entire sem*(2) library is present.
1696 d_semctl (d_semctl.U):
1697 This variable conditionally defines the HAS_SEMCTL symbol, which
1698 indicates to the C program that the semctl() routine is available.
1700 d_semctl_semid_ds (d_union_semun.U):
1701 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1702 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1704 d_semctl_semun (d_union_semun.U):
1705 This variable conditionally defines USE_SEMCTL_SEMUN, which
1706 indicates that union semun is to be used for semctl IPC_STAT.
1708 d_semget (d_semget.U):
1709 This variable conditionally defines the HAS_SEMGET symbol, which
1710 indicates to the C program that the semget() routine is available.
1712 d_semop (d_semop.U):
1713 This variable conditionally defines the HAS_SEMOP symbol, which
1714 indicates to the C program that the semop() routine is available.
1716 d_sendmsg (d_sendmsg.U):
1717 This variable conditionally defines the HAS_SENDMSG symbol, which
1718 indicates to the C program that the sendmsg() routine is available.
1720 d_setegid (d_setegid.U):
1721 This variable conditionally defines the HAS_SETEGID symbol, which
1722 indicates to the C program that the setegid() routine is available
1723 to change the effective gid of the current program.
1725 d_seteuid (d_seteuid.U):
1726 This variable conditionally defines the HAS_SETEUID symbol, which
1727 indicates to the C program that the seteuid() routine is available
1728 to change the effective uid of the current program.
1730 d_setgrent (d_setgrent.U):
1731 This variable conditionally defines the HAS_SETGRENT symbol, which
1732 indicates to the C program that the setgrent() routine is available
1733 for initializing sequential access to the group database.
1735 d_setgrent_r (d_setgrent_r.U):
1736 This variable conditionally defines the HAS_SETGRENT_R symbol,
1737 which indicates to the C program that the setgrent_r()
1738 routine is available.
1740 d_setgrps (d_setgrps.U):
1741 This variable conditionally defines the HAS_SETGROUPS symbol, which
1742 indicates to the C program that the setgroups() routine is available
1743 to set the list of process groups.
1745 d_sethent (d_sethent.U):
1746 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1749 d_sethostent_r (d_sethostent_r.U):
1750 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1751 which indicates to the C program that the sethostent_r()
1752 routine is available.
1754 d_setitimer (d_setitimer.U):
1755 This variable conditionally defines the HAS_SETITIMER symbol, which
1756 indicates to the C program that the setitimer() routine is available.
1758 d_setlinebuf (d_setlnbuf.U):
1759 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1760 indicates to the C program that the setlinebuf() routine is available
1761 to change stderr or stdout from block-buffered or unbuffered to a
1764 d_setlocale (d_setlocale.U):
1765 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1766 available to handle locale-specific ctype implementations.
1768 d_setlocale_r (d_setlocale_r.U):
1769 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1770 which indicates to the C program that the setlocale_r()
1771 routine is available.
1773 d_setnent (d_setnent.U):
1774 This variable conditionally defines HAS_SETNETENT if setnetent() is
1777 d_setnetent_r (d_setnetent_r.U):
1778 This variable conditionally defines the HAS_SETNETENT_R symbol,
1779 which indicates to the C program that the setnetent_r()
1780 routine is available.
1782 d_setpent (d_setpent.U):
1783 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1786 d_setpgid (d_setpgid.U):
1787 This variable conditionally defines the HAS_SETPGID symbol if the
1788 setpgid(pid, gpid) function is available to set process group ID.
1790 d_setpgrp2 (d_setpgrp2.U):
1791 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1792 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1793 is available to set the current process group.
1795 d_setpgrp (d_setpgrp.U):
1796 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1797 available to set the current process group.
1799 d_setprior (d_setprior.U):
1800 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1801 is available to set a process's priority.
1803 d_setproctitle (d_setproctitle.U):
1804 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1805 which indicates to the C program that the setproctitle() routine
1808 d_setprotoent_r (d_setprotoent_r.U):
1809 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1810 which indicates to the C program that the setprotoent_r()
1811 routine is available.
1813 d_setpwent (d_setpwent.U):
1814 This variable conditionally defines the HAS_SETPWENT symbol, which
1815 indicates to the C program that the setpwent() routine is available
1816 for initializing sequential access to the passwd database.
1818 d_setpwent_r (d_setpwent_r.U):
1819 This variable conditionally defines the HAS_SETPWENT_R symbol,
1820 which indicates to the C program that the setpwent_r()
1821 routine is available.
1823 d_setregid (d_setregid.U):
1824 This variable conditionally defines HAS_SETREGID if setregid() is
1825 available to change the real and effective gid of the current
1828 d_setresgid (d_setregid.U):
1829 This variable conditionally defines HAS_SETRESGID if setresgid() is
1830 available to change the real, effective and saved gid of the current
1833 d_setresuid (d_setreuid.U):
1834 This variable conditionally defines HAS_SETREUID if setresuid() is
1835 available to change the real, effective and saved uid of the current
1838 d_setreuid (d_setreuid.U):
1839 This variable conditionally defines HAS_SETREUID if setreuid() is
1840 available to change the real and effective uid of the current
1843 d_setrgid (d_setrgid.U):
1844 This variable conditionally defines the HAS_SETRGID symbol, which
1845 indicates to the C program that the setrgid() routine is available
1846 to change the real gid of the current program.
1848 d_setruid (d_setruid.U):
1849 This variable conditionally defines the HAS_SETRUID symbol, which
1850 indicates to the C program that the setruid() routine is available
1851 to change the real uid of the current program.
1853 d_setsent (d_setsent.U):
1854 This variable conditionally defines HAS_SETSERVENT if setservent() is
1857 d_setservent_r (d_setservent_r.U):
1858 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1859 which indicates to the C program that the setservent_r()
1860 routine is available.
1862 d_setsid (d_setsid.U):
1863 This variable conditionally defines HAS_SETSID if setsid() is
1864 available to set the process group ID.
1866 d_setvbuf (d_setvbuf.U):
1867 This variable conditionally defines the HAS_SETVBUF symbol, which
1868 indicates to the C program that the setvbuf() routine is available
1869 to change buffering on an open stdio stream.
1872 This variable conditionally defines the USE_SFIO symbol,
1873 and indicates whether sfio is available (and should be used).
1876 This variable conditionally defines the HAS_SHM symbol, which
1877 indicates that the entire shm*(2) library is present.
1879 d_shmat (d_shmat.U):
1880 This variable conditionally defines the HAS_SHMAT symbol, which
1881 indicates to the C program that the shmat() routine is available.
1883 d_shmatprototype (d_shmat.U):
1884 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1885 symbol, which indicates that sys/shm.h has a prototype for
1888 d_shmctl (d_shmctl.U):
1889 This variable conditionally defines the HAS_SHMCTL symbol, which
1890 indicates to the C program that the shmctl() routine is available.
1892 d_shmdt (d_shmdt.U):
1893 This variable conditionally defines the HAS_SHMDT symbol, which
1894 indicates to the C program that the shmdt() routine is available.
1896 d_shmget (d_shmget.U):
1897 This variable conditionally defines the HAS_SHMGET symbol, which
1898 indicates to the C program that the shmget() routine is available.
1900 d_sigaction (d_sigaction.U):
1901 This variable conditionally defines the HAS_SIGACTION symbol, which
1902 indicates that the Vr4 sigaction() routine is available.
1904 d_sigprocmask (d_sigprocmask.U):
1905 This variable conditionally defines HAS_SIGPROCMASK
1906 if sigprocmask() is available to examine or change the signal mask
1907 of the calling process.
1909 d_sigsetjmp (d_sigsetjmp.U):
1910 This variable conditionally defines the HAS_SIGSETJMP symbol,
1911 which indicates that the sigsetjmp() routine is available to
1912 call setjmp() and optionally save the process's signal mask.
1914 d_sitearch (sitearch.U):
1915 This variable conditionally defines SITEARCH to hold the pathname
1916 of architecture-dependent library files for $package. If
1917 $sitearch is the same as $archlib, then this is set to undef.
1919 d_sockatmark (d_sockatmark.U):
1920 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1921 indicates to the C program that the sockatmark() routine is available.
1923 d_sockatmarkproto (d_sockatmarkproto.U):
1924 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1925 which indicates to the C program that the system provides
1926 a prototype for the sockatmark() function. Otherwise, it is
1927 up to the program to supply one.
1929 d_socket (d_socket.U):
1930 This variable conditionally defines HAS_SOCKET, which indicates
1931 that the BSD socket interface is supported.
1933 d_socklen_t (d_socklen_t.U):
1934 This symbol will be defined if the C compiler supports socklen_t.
1936 d_sockpair (d_socket.U):
1937 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1938 indicates that the BSD socketpair() is supported.
1940 d_socks5_init (d_socks5_init.U):
1941 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1942 indicates to the C program that the socks5_init() routine is available.
1944 d_sprintf_returns_strlen (d_sprintf_returns_strlen.U):
1945 This variable defines whether sprintf returns the length of the string
1946 (as per the ANSI spec). Some C libraries retain compatibility with
1947 pre-ANSI C and return a pointer to the passed in buffer; for these
1948 this variable will be undef.
1950 d_sqrtl (d_sqrtl.U):
1951 This variable conditionally defines the HAS_SQRTL symbol, which
1952 indicates to the C program that the sqrtl() routine is available.
1954 d_srand48_r (d_srand48_r.U):
1955 This variable conditionally defines the HAS_SRAND48_R symbol,
1956 which indicates to the C program that the srand48_r()
1957 routine is available.
1959 d_srandom_r (d_srandom_r.U):
1960 This variable conditionally defines the HAS_SRANDOM_R symbol,
1961 which indicates to the C program that the srandom_r()
1962 routine is available.
1964 d_sresgproto (d_sresgproto.U):
1965 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1966 which indicates to the C program that the system provides
1967 a prototype for the setresgid() function. Otherwise, it is
1968 up to the program to supply one.
1970 d_sresuproto (d_sresuproto.U):
1971 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1972 which indicates to the C program that the system provides
1973 a prototype for the setresuid() function. Otherwise, it is
1974 up to the program to supply one.
1976 d_statblks (d_statblks.U):
1977 This variable conditionally defines USE_STAT_BLOCKS
1978 if this system has a stat structure declaring
1979 st_blksize and st_blocks.
1981 d_statfs_f_flags (d_statfs_f_flags.U):
1982 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1983 symbol, which indicates to struct statfs from has f_flags member.
1984 This kind of struct statfs is coming from sys/mount.h (BSD),
1985 not from sys/statfs.h (SYSV).
1987 d_statfs_s (d_statfs_s.U):
1988 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1989 which indicates that the struct statfs is supported.
1991 d_statvfs (d_statvfs.U):
1992 This variable conditionally defines the HAS_STATVFS symbol, which
1993 indicates to the C program that the statvfs() routine is available.
1995 d_stdio_cnt_lval (d_stdstdio.U):
1996 This variable conditionally defines STDIO_CNT_LVALUE if the
1997 FILE_cnt macro can be used as an lvalue.
1999 d_stdio_ptr_lval (d_stdstdio.U):
2000 This variable conditionally defines STDIO_PTR_LVALUE if the
2001 FILE_ptr macro can be used as an lvalue.
2003 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2004 This symbol is defined if using the FILE_ptr macro as an lvalue
2005 to increase the pointer by n leaves File_cnt(fp) unchanged.
2007 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2008 This symbol is defined if using the FILE_ptr macro as an lvalue
2009 to increase the pointer by n has the side effect of decreasing the
2010 value of File_cnt(fp) by n.
2012 d_stdio_stream_array (stdio_streams.U):
2013 This variable tells whether there is an array holding
2016 d_stdiobase (d_stdstdio.U):
2017 This variable conditionally defines USE_STDIO_BASE if this system
2018 has a FILE structure declaring a usable _base field (or equivalent)
2021 d_stdstdio (d_stdstdio.U):
2022 This variable conditionally defines USE_STDIO_PTR if this system
2023 has a FILE structure declaring usable _ptr and _cnt fields (or
2024 equivalent) in stdio.h.
2026 d_strchr (d_strchr.U):
2027 This variable conditionally defines HAS_STRCHR if strchr() and
2028 strrchr() are available for string searching.
2030 d_strcoll (d_strcoll.U):
2031 This variable conditionally defines HAS_STRCOLL if strcoll() is
2032 available to compare strings using collating information.
2034 d_strctcpy (d_strctcpy.U):
2035 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2036 indicates to the C program that this C compiler knows how to copy
2039 d_strerrm (d_strerror.U):
2040 This variable holds what Strerrr is defined as to translate an error
2041 code condition into an error message string. It could be 'strerror'
2042 or a more complex macro emulating strrror with sys_errlist[], or the
2043 "unknown" string when both strerror and sys_errlist are missing.
2045 d_strerror (d_strerror.U):
2046 This variable conditionally defines HAS_STRERROR if strerror() is
2047 available to translate error numbers to strings.
2049 d_strerror_r (d_strerror_r.U):
2050 This variable conditionally defines the HAS_STRERROR_R symbol,
2051 which indicates to the C program that the strerror_r()
2052 routine is available.
2054 d_strftime (d_strftime.U):
2055 This variable conditionally defines the HAS_STRFTIME symbol, which
2056 indicates to the C program that the strftime() routine is available.
2058 d_strlcat (d_strlcat.U):
2059 This variable conditionally defines the HAS_STRLCAT symbol, which
2060 indicates to the C program that the strlcat () routine is available.
2062 d_strlcpy (d_strlcpy.U):
2063 This variable conditionally defines the HAS_STRLCPY symbol, which
2064 indicates to the C program that the strlcpy () routine is available.
2066 d_strtod (d_strtod.U):
2067 This variable conditionally defines the HAS_STRTOD symbol, which
2068 indicates to the C program that the strtod() routine is available
2069 to provide better numeric string conversion than atof().
2071 d_strtol (d_strtol.U):
2072 This variable conditionally defines the HAS_STRTOL symbol, which
2073 indicates to the C program that the strtol() routine is available
2074 to provide better numeric string conversion than atoi() and friends.
2076 d_strtold (d_strtold.U):
2077 This variable conditionally defines the HAS_STRTOLD symbol, which
2078 indicates to the C program that the strtold() routine is available.
2080 d_strtoll (d_strtoll.U):
2081 This variable conditionally defines the HAS_STRTOLL symbol, which
2082 indicates to the C program that the strtoll() routine is available.
2084 d_strtoq (d_strtoq.U):
2085 This variable conditionally defines the HAS_STRTOQ symbol, which
2086 indicates to the C program that the strtoq() routine is available.
2088 d_strtoul (d_strtoul.U):
2089 This variable conditionally defines the HAS_STRTOUL symbol, which
2090 indicates to the C program that the strtoul() routine is available
2091 to provide conversion of strings to unsigned long.
2093 d_strtoull (d_strtoull.U):
2094 This variable conditionally defines the HAS_STRTOULL symbol, which
2095 indicates to the C program that the strtoull() routine is available.
2097 d_strtouq (d_strtouq.U):
2098 This variable conditionally defines the HAS_STRTOUQ symbol, which
2099 indicates to the C program that the strtouq() routine is available.
2101 d_strxfrm (d_strxfrm.U):
2102 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2103 available to transform strings.
2105 d_suidsafe (d_dosuid.U):
2106 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2107 if setuid scripts can be secure. This test looks in /dev/fd/.
2109 d_symlink (d_symlink.U):
2110 This variable conditionally defines the HAS_SYMLINK symbol, which
2111 indicates to the C program that the symlink() routine is available
2112 to create symbolic links.
2114 d_syscall (d_syscall.U):
2115 This variable conditionally defines HAS_SYSCALL if syscall() is
2116 available call arbitrary system calls.
2118 d_syscallproto (d_syscallproto.U):
2119 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2120 which indicates to the C program that the system provides
2121 a prototype for the syscall() function. Otherwise, it is
2122 up to the program to supply one.
2124 d_sysconf (d_sysconf.U):
2125 This variable conditionally defines the HAS_SYSCONF symbol, which
2126 indicates to the C program that the sysconf() routine is available
2127 to determine system related limits and options.
2129 d_sysernlst (d_strerror.U):
2130 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2131 is available to translate error numbers to the symbolic name.
2133 d_syserrlst (d_strerror.U):
2134 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2135 available to translate error numbers to strings.
2137 d_system (d_system.U):
2138 This variable conditionally defines HAS_SYSTEM if system() is
2139 available to issue a shell command.
2141 d_tcgetpgrp (d_tcgtpgrp.U):
2142 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2143 indicates to the C program that the tcgetpgrp() routine is available.
2144 to get foreground process group ID.
2146 d_tcsetpgrp (d_tcstpgrp.U):
2147 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2148 indicates to the C program that the tcsetpgrp() routine is available
2149 to set foreground process group ID.
2151 d_telldir (d_readdir.U):
2152 This variable conditionally defines HAS_TELLDIR if telldir() is
2155 d_telldirproto (d_telldirproto.U):
2156 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2157 which indicates to the C program that the system provides
2158 a prototype for the telldir() function. Otherwise, it is
2159 up to the program to supply one.
2162 This variable conditionally defines the HAS_TIME symbol, which indicates
2163 that the time() routine exists. The time() routine is normaly
2164 provided on UNIX systems.
2166 d_times (d_times.U):
2167 This variable conditionally defines the HAS_TIMES symbol, which indicates
2168 that the times() routine exists. The times() routine is normaly
2169 provided on UNIX systems. You may have to include <sys/times.h>.
2171 d_tm_tm_gmtoff (i_time.U):
2172 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2173 indicates to the C program that the struct tm has the tm_gmtoff field.
2175 d_tm_tm_zone (i_time.U):
2176 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2177 indicates to the C program that the struct tm has the tm_zone field.
2179 d_tmpnam_r (d_tmpnam_r.U):
2180 This variable conditionally defines the HAS_TMPNAM_R symbol,
2181 which indicates to the C program that the tmpnam_r()
2182 routine is available.
2184 d_truncate (d_truncate.U):
2185 This variable conditionally defines HAS_TRUNCATE if truncate() is
2186 available to truncate files.
2188 d_ttyname_r (d_ttyname_r.U):
2189 This variable conditionally defines the HAS_TTYNAME_R symbol,
2190 which indicates to the C program that the ttyname_r()
2191 routine is available.
2193 d_tzname (d_tzname.U):
2194 This variable conditionally defines HAS_TZNAME if tzname[] is
2195 available to access timezone names.
2197 d_u32align (d_u32align.U):
2198 This variable tells whether you must access character data
2199 through U32-aligned pointers.
2201 d_ualarm (d_ualarm.U):
2202 This variable conditionally defines the HAS_UALARM symbol, which
2203 indicates to the C program that the ualarm() routine is available.
2205 d_umask (d_umask.U):
2206 This variable conditionally defines the HAS_UMASK symbol, which
2207 indicates to the C program that the umask() routine is available.
2208 to set and get the value of the file creation mask.
2210 d_uname (d_gethname.U):
2211 This variable conditionally defines the HAS_UNAME symbol, which
2212 indicates to the C program that the uname() routine may be
2213 used to derive the host name.
2215 d_union_semun (d_union_semun.U):
2216 This variable conditionally defines HAS_UNION_SEMUN if the
2217 union semun is defined by including <sys/sem.h>.
2219 d_unordered (d_unordered.U):
2220 This variable conditionally defines the HAS_UNORDERED symbol, which
2221 indicates to the C program that the unordered() routine is available.
2223 d_unsetenv (d_unsetenv.U):
2224 This variable conditionally defines the HAS_UNSETENV symbol, which
2225 indicates to the C program that the unsetenv () routine is available.
2227 d_usleep (d_usleep.U):
2228 This variable conditionally defines HAS_USLEEP if usleep() is
2229 available to do high granularity sleeps.
2231 d_usleepproto (d_usleepproto.U):
2232 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2233 which indicates to the C program that the system provides
2234 a prototype for the usleep() function. Otherwise, it is
2235 up to the program to supply one.
2237 d_ustat (d_ustat.U):
2238 This variable conditionally defines HAS_USTAT if ustat() is
2239 available to query file system statistics by dev_t.
2241 d_vendorarch (vendorarch.U):
2242 This variable conditionally defined PERL_VENDORARCH.
2244 d_vendorbin (vendorbin.U):
2245 This variable conditionally defines PERL_VENDORBIN.
2247 d_vendorlib (vendorlib.U):
2248 This variable conditionally defines PERL_VENDORLIB.
2250 d_vendorscript (vendorscript.U):
2251 This variable conditionally defines PERL_VENDORSCRIPT.
2253 d_vfork (d_vfork.U):
2254 This variable conditionally defines the HAS_VFORK symbol, which
2255 indicates the vfork() routine is available.
2257 d_void_closedir (d_closedir.U):
2258 This variable conditionally defines VOID_CLOSEDIR if closedir()
2259 does not return a value.
2261 d_voidsig (d_voidsig.U):
2262 This variable conditionally defines VOIDSIG if this system
2263 declares "void (*signal(...))()" in signal.h. The old way was to
2264 declare it as "int (*signal(...))()".
2266 d_voidtty (i_sysioctl.U):
2267 This variable conditionally defines USE_IOCNOTTY to indicate that the
2268 ioctl() call with TIOCNOTTY should be used to void tty association.
2269 Otherwise (on USG probably), it is enough to close the standard file
2270 decriptors and do a setpgrp().
2272 d_volatile (d_volatile.U):
2273 This variable conditionally defines the HASVOLATILE symbol, which
2274 indicates to the C program that this C compiler knows about the
2275 volatile declaration.
2277 d_vprintf (d_vprintf.U):
2278 This variable conditionally defines the HAS_VPRINTF symbol, which
2279 indicates to the C program that the vprintf() routine is available
2280 to printf with a pointer to an argument list.
2282 d_wait4 (d_wait4.U):
2283 This variable conditionally defines the HAS_WAIT4 symbol, which
2284 indicates the wait4() routine is available.
2286 d_waitpid (d_waitpid.U):
2287 This variable conditionally defines HAS_WAITPID if waitpid() is
2288 available to wait for child process.
2290 d_wcstombs (d_wcstombs.U):
2291 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2292 indicates to the C program that the wcstombs() routine is available
2293 to convert wide character strings to multibyte strings.
2295 d_wctomb (d_wctomb.U):
2296 This variable conditionally defines the HAS_WCTOMB symbol, which
2297 indicates to the C program that the wctomb() routine is available
2298 to convert a wide character to a multibyte.
2300 d_writev (d_writev.U):
2301 This variable conditionally defines the HAS_WRITEV symbol, which
2302 indicates to the C program that the writev() routine is available.
2305 This variable conditionally defines the symbol XENIX, which alerts
2306 the C program that it runs under Xenix.
2309 This variable is used internally by Configure to determine the
2310 full pathname (if any) of the date program. After Configure runs,
2311 the value is reset to a plain "date" and is not useful.
2313 db_hashtype (i_db.U):
2314 This variable contains the type of the hash structure element
2315 in the <db.h> header file. In older versions of DB, it was
2316 int, while in newer ones it is u_int32_t.
2318 db_prefixtype (i_db.U):
2319 This variable contains the type of the prefix structure element
2320 in the <db.h> header file. In older versions of DB, it was
2321 int, while in newer ones it is size_t.
2323 db_version_major (i_db.U):
2324 This variable contains the major version number of
2325 Berkeley DB found in the <db.h> header file.
2327 db_version_minor (i_db.U):
2328 This variable contains the minor version number of
2329 Berkeley DB found in the <db.h> header file.
2330 For DB version 1 this is always 0.
2332 db_version_patch (i_db.U):
2333 This variable contains the patch version number of
2334 Berkeley DB found in the <db.h> header file.
2335 For DB version 1 this is always 0.
2337 defvoidused (voidflags.U):
2338 This variable contains the default value of the VOIDUSED symbol (15).
2340 direntrytype (i_dirent.U):
2341 This symbol is set to 'struct direct' or 'struct dirent' depending on
2342 whether dirent is available or not. You should use this pseudo type to
2343 portably declare your directory entries.
2346 This variable contains the extension that is to be used for the
2347 dynamically loaded modules that perl generaties.
2350 This variable contains the name of the dynamic loading file that
2351 will be used with the package.
2353 doublesize (doublesize.U):
2354 This variable contains the value of the DOUBLESIZE symbol, which
2355 indicates to the C program how many bytes there are in a double.
2357 drand01 (randfunc.U):
2358 Indicates the macro to be used to generate normalized
2359 random numbers. Uses randfunc, often divided by
2360 (double) (((unsigned long) 1 << randbits)) in order to
2361 normalize the result.
2362 In C programs, the macro 'Drand01' is mapped to drand01.
2364 drand48_r_proto (d_drand48_r.U):
2365 This variable encodes the prototype of drand48_r.
2366 It is zero if d_drand48_r is undef, and one of the
2367 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2370 dynamic_ext (Extensions.U):
2371 This variable holds a list of XS extension files we want to
2372 link dynamically into the package. It is used by Makefile.
2374 eagain (nblock_io.U):
2375 This variable bears the symbolic errno code set by read() when no
2376 data is present on the file and non-blocking I/O was enabled (otherwise,
2377 read() blocks naturally).
2380 This variable conditionally defines EBCDIC if this
2381 system uses EBCDIC encoding. Among other things, this
2382 means that the character ranges are not contiguous.
2386 This variable is used internally by Configure to determine the
2387 full pathname (if any) of the echo program. After Configure runs,
2388 the value is reset to a plain "echo" and is not useful.
2391 This variable is used internally by Configure to determine the
2392 full pathname (if any) of the egrep program. After Configure runs,
2393 the value is reset to a plain "egrep" and is not useful.
2396 This variable is defined but not used by Configure.
2397 The value is a plain '' and is not useful.
2399 endgrent_r_proto (d_endgrent_r.U):
2400 This variable encodes the prototype of endgrent_r.
2401 It is zero if d_endgrent_r is undef, and one of the
2402 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2405 endhostent_r_proto (d_endhostent_r.U):
2406 This variable encodes the prototype of endhostent_r.
2407 It is zero if d_endhostent_r is undef, and one of the
2408 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2411 endnetent_r_proto (d_endnetent_r.U):
2412 This variable encodes the prototype of endnetent_r.
2413 It is zero if d_endnetent_r is undef, and one of the
2414 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2417 endprotoent_r_proto (d_endprotoent_r.U):
2418 This variable encodes the prototype of endprotoent_r.
2419 It is zero if d_endprotoent_r is undef, and one of the
2420 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2423 endpwent_r_proto (d_endpwent_r.U):
2424 This variable encodes the prototype of endpwent_r.
2425 It is zero if d_endpwent_r is undef, and one of the
2426 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2429 endservent_r_proto (d_endservent_r.U):
2430 This variable encodes the prototype of endservent_r.
2431 It is zero if d_endservent_r is undef, and one of the
2432 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2436 When running under Eunice this variable contains a command which will
2437 convert a shell script to the proper form of text file for it to be
2438 executable by the shell. On other systems it is a no-op.
2441 This is an old synonym for _exe.
2444 This variable is used internally by Configure to determine the
2445 full pathname (if any) of the expr program. After Configure runs,
2446 the value is reset to a plain "expr" and is not useful.
2448 extensions (Extensions.U):
2449 This variable holds a list of all extension files (both XS and
2450 non-xs linked into the package. It is propagated to Config.pm
2451 and is typically used to test whether a particular extesion
2455 This variable holds a list of extra modules to install.
2457 fflushall (fflushall.U):
2458 This symbol, if defined, tells that to flush
2459 all pending stdio output one must loop through all
2460 the stdio file handles stored in an array and fflush them.
2461 Note that if fflushNULL is defined, fflushall will not
2462 even be probed for and will be left undefined.
2464 fflushNULL (fflushall.U):
2465 This symbol, if defined, tells that fflush(NULL) does flush
2466 all pending stdio output.
2469 This variable is defined but not used by Configure.
2470 The value is a plain '' and is not useful.
2472 firstmakefile (Unix.U):
2473 This variable defines the first file searched by make. On unix,
2474 it is makefile (then Makefile). On case-insensitive systems,
2475 it might be something else. This is only used to deal with
2476 convoluted make depend tricks.
2479 This variable is defined but not used by Configure.
2480 The value is a plain '' and is not useful.
2482 fpossize (fpossize.U):
2483 This variable contains the size of a fpostype in bytes.
2485 fpostype (fpostype.U):
2486 This variable defines Fpos_t to be something like fpos_t, long,
2487 uint, or whatever type is used to declare file positions in libc.
2489 freetype (mallocsrc.U):
2490 This variable contains the return type of free(). It is usually
2491 void, but occasionally int.
2494 This variable contains the command used by Configure
2495 to copy files from the target host. Useful and available
2496 only during Perl build.
2497 The string ':' if not cross-compiling.
2500 This variable contains the full pathname to 'ar', whether or
2501 not the user has specified 'portability'. This is only used
2505 This variable contains the full pathname to 'csh', whether or
2506 not the user has specified 'portability'. This is only used
2507 in the compiled C program, and we assume that all systems which
2508 can share this executable will have the same full pathname to
2511 full_sed (Loc_sed.U):
2512 This variable contains the full pathname to 'sed', whether or
2513 not the user has specified 'portability'. This is only used
2514 in the compiled C program, and we assume that all systems which
2515 can share this executable will have the same full pathname to
2518 gccansipedantic (gccvers.U):
2519 If GNU cc (gcc) is used, this variable will enable (if set) the
2520 -ansi and -pedantic ccflags for building core files (through
2521 cflags script). (See Porting/pumpkin.pod for full description).
2523 gccosandvers (gccvers.U):
2524 If GNU cc (gcc) is used, this variable holds the operating system
2525 and version used to compile gcc. It is set to '' if not gcc,
2526 or if nothing useful can be parsed as the os version.
2528 gccversion (gccvers.U):
2529 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2530 indicate whether the compiler is version 1 or 2. This is used in
2531 setting some of the default cflags. It is set to '' if not gcc.
2533 getgrent_r_proto (d_getgrent_r.U):
2534 This variable encodes the prototype of getgrent_r.
2535 It is zero if d_getgrent_r is undef, and one of the
2536 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2539 getgrgid_r_proto (d_getgrgid_r.U):
2540 This variable encodes the prototype of getgrgid_r.
2541 It is zero if d_getgrgid_r is undef, and one of the
2542 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2545 getgrnam_r_proto (d_getgrnam_r.U):
2546 This variable encodes the prototype of getgrnam_r.
2547 It is zero if d_getgrnam_r is undef, and one of the
2548 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2551 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2552 This variable encodes the prototype of gethostbyaddr_r.
2553 It is zero if d_gethostbyaddr_r is undef, and one of the
2554 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2557 gethostbyname_r_proto (d_gethostbyname_r.U):
2558 This variable encodes the prototype of gethostbyname_r.
2559 It is zero if d_gethostbyname_r is undef, and one of the
2560 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2563 gethostent_r_proto (d_gethostent_r.U):
2564 This variable encodes the prototype of gethostent_r.
2565 It is zero if d_gethostent_r is undef, and one of the
2566 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2569 getlogin_r_proto (d_getlogin_r.U):
2570 This variable encodes the prototype of getlogin_r.
2571 It is zero if d_getlogin_r is undef, and one of the
2572 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2575 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2576 This variable encodes the prototype of getnetbyaddr_r.
2577 It is zero if d_getnetbyaddr_r is undef, and one of the
2578 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2581 getnetbyname_r_proto (d_getnetbyname_r.U):
2582 This variable encodes the prototype of getnetbyname_r.
2583 It is zero if d_getnetbyname_r is undef, and one of the
2584 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2587 getnetent_r_proto (d_getnetent_r.U):
2588 This variable encodes the prototype of getnetent_r.
2589 It is zero if d_getnetent_r is undef, and one of the
2590 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2593 getprotobyname_r_proto (d_getprotobyname_r.U):
2594 This variable encodes the prototype of getprotobyname_r.
2595 It is zero if d_getprotobyname_r is undef, and one of the
2596 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2599 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2600 This variable encodes the prototype of getprotobynumber_r.
2601 It is zero if d_getprotobynumber_r is undef, and one of the
2602 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2605 getprotoent_r_proto (d_getprotoent_r.U):
2606 This variable encodes the prototype of getprotoent_r.
2607 It is zero if d_getprotoent_r is undef, and one of the
2608 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2611 getpwent_r_proto (d_getpwent_r.U):
2612 This variable encodes the prototype of getpwent_r.
2613 It is zero if d_getpwent_r is undef, and one of the
2614 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2617 getpwnam_r_proto (d_getpwnam_r.U):
2618 This variable encodes the prototype of getpwnam_r.
2619 It is zero if d_getpwnam_r is undef, and one of the
2620 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2623 getpwuid_r_proto (d_getpwuid_r.U):
2624 This variable encodes the prototype of getpwuid_r.
2625 It is zero if d_getpwuid_r is undef, and one of the
2626 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2629 getservbyname_r_proto (d_getservbyname_r.U):
2630 This variable encodes the prototype of getservbyname_r.
2631 It is zero if d_getservbyname_r is undef, and one of the
2632 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2635 getservbyport_r_proto (d_getservbyport_r.U):
2636 This variable encodes the prototype of getservbyport_r.
2637 It is zero if d_getservbyport_r is undef, and one of the
2638 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2641 getservent_r_proto (d_getservent_r.U):
2642 This variable encodes the prototype of getservent_r.
2643 It is zero if d_getservent_r is undef, and one of the
2644 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2647 getspnam_r_proto (d_getspnam_r.U):
2648 This variable encodes the prototype of getspnam_r.
2649 It is zero if d_getspnam_r is undef, and one of the
2650 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2654 This variable contains the format string used for printing a Gid_t.
2656 gidsign (gidsign.U):
2657 This variable contains the signedness of a gidtype.
2658 1 for unsigned, -1 for signed.
2660 gidsize (gidsize.U):
2661 This variable contains the size of a gidtype in bytes.
2663 gidtype (gidtype.U):
2664 This variable defines Gid_t to be something like gid_t, int,
2665 ushort, or whatever type is used to declare the return type
2666 of getgid(). Typically, it is the type of group ids in the kernel.
2669 This variable holds the general path (space-separated) used to
2670 find libraries. It may contain directories that do not exist on
2671 this platform, libpth is the cleaned-up version.
2674 This variable is used internally by Configure to determine the
2675 full pathname (if any) of the gmake program. After Configure runs,
2676 the value is reset to a plain "gmake" and is not useful.
2678 gmtime_r_proto (d_gmtime_r.U):
2679 This variable encodes the prototype of gmtime_r.
2680 It is zero if d_gmtime_r is undef, and one of the
2681 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2684 gnulibc_version (d_gnulibc.U):
2685 This variable contains the version number of the GNU C library.
2686 It is usually something like '2.2.5'. It is a plain '' if this
2687 is not the GNU C library, or if the version is unknown.
2690 This variable is used internally by Configure to determine the
2691 full pathname (if any) of the grep program. After Configure runs,
2692 the value is reset to a plain "grep" and is not useful.
2695 This variable contains a command that produces the text of the
2696 /etc/group file. This is normally "cat /etc/group", but can be
2697 "ypcat group" when NIS is used.
2698 On some systems, such as os390, there may be no equivalent
2699 command, in which case this variable is unset.
2701 groupstype (groupstype.U):
2702 This variable defines Groups_t to be something like gid_t, int,
2703 ushort, or whatever type is used for the second argument to
2704 getgroups() and setgroups(). Usually, this is the same as
2705 gidtype (gid_t), but sometimes it isn't.
2708 This variable is used internally by Configure to determine the
2709 full pathname (if any) of the gzip program. After Configure runs,
2710 the value is reset to a plain "gzip" and is not useful.
2712 h_fcntl (h_fcntl.U):
2713 This is variable gets set in various places to tell i_fcntl that
2714 <fcntl.h> should be included.
2716 h_sysfile (h_sysfile.U):
2717 This is variable gets set in various places to tell i_sys_file that
2718 <sys/file.h> should be included.
2721 Gives the type of hints used for previous answers. May be one of
2722 "default", "recommended" or "previous".
2725 This variable contains a command that produces the text of the
2726 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2727 "ypcat hosts" when NIS is used.
2728 On some systems, such as os390, there may be no equivalent
2729 command, in which case this variable is unset.
2731 html1dir (html1dir.U):
2732 This variable contains the name of the directory in which html
2733 source pages are to be put. This directory is for pages
2734 that describe whole programs, not libraries or modules. It
2735 is intended to correspond roughly to section 1 of the Unix
2738 html1direxp (html1dir.U):
2739 This variable is the same as the html1dir variable, but is filename
2740 expanded at configuration time, for convenient use in makefiles.
2742 html3dir (html3dir.U):
2743 This variable contains the name of the directory in which html
2744 source pages are to be put. This directory is for pages
2745 that describe libraries or modules. It is intended to
2746 correspond roughly to section 3 of the Unix manuals.
2748 html3direxp (html3dir.U):
2749 This variable is the same as the html3dir variable, but is filename
2750 expanded at configuration time, for convenient use in makefiles.
2753 This variable is the size of an I16 in bytes.
2756 This variable contains the C type used for Perl's I16.
2759 This variable is the size of an I32 in bytes.
2762 This variable contains the C type used for Perl's I32.
2765 This variable is the size of an I64 in bytes.
2768 This variable contains the C type used for Perl's I64.
2771 This variable is the size of an I8 in bytes.
2774 This variable contains the C type used for Perl's I8.
2776 i_arpainet (i_arpainet.U):
2777 This variable conditionally defines the I_ARPA_INET symbol,
2778 and indicates whether a C program should include <arpa/inet.h>.
2780 i_bsdioctl (i_sysioctl.U):
2781 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2782 indicates to the C program that <sys/bsdioctl.h> exists and should
2785 i_crypt (i_crypt.U):
2786 This variable conditionally defines the I_CRYPT symbol, and indicates
2787 whether a C program should include <crypt.h>.
2790 This variable conditionally defines the I_DB symbol, and indicates
2791 whether a C program may include Berkeley's DB include file <db.h>.
2794 This variable conditionally defines the I_DBM symbol, which
2795 indicates to the C program that <dbm.h> exists and should
2798 i_dirent (i_dirent.U):
2799 This variable conditionally defines I_DIRENT, which indicates
2800 to the C program that it should include <dirent.h>.
2803 This variable conditionally defines the I_DLD symbol, which
2804 indicates to the C program that <dld.h> (GNU dynamic loading)
2805 exists and should be included.
2807 i_dlfcn (i_dlfcn.U):
2808 This variable conditionally defines the I_DLFCN symbol, which
2809 indicates to the C program that <dlfcn.h> exists and should
2812 i_fcntl (i_fcntl.U):
2813 This variable controls the value of I_FCNTL (which tells
2814 the C program to include <fcntl.h>).
2816 i_float (i_float.U):
2817 This variable conditionally defines the I_FLOAT symbol, and indicates
2818 whether a C program may include <float.h> to get symbols like DBL_MAX
2819 or DBL_MIN, i.e. machine dependent floating point values.
2822 This variable conditionally defines the I_FP symbol, and indicates
2823 whether a C program should include <fp.h>.
2825 i_fp_class (i_fp_class.U):
2826 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2827 whether a C program should include <fp_class.h>.
2830 This variable conditionally defines the I_GDBM symbol, which
2831 indicates to the C program that <gdbm.h> exists and should
2835 This variable conditionally defines the I_GRP symbol, and indicates
2836 whether a C program should include <grp.h>.
2838 i_ieeefp (i_ieeefp.U):
2839 This variable conditionally defines the I_IEEEFP symbol, and indicates
2840 whether a C program should include <ieeefp.h>.
2842 i_inttypes (i_inttypes.U):
2843 This variable conditionally defines the I_INTTYPES symbol,
2844 and indicates whether a C program should include <inttypes.h>.
2846 i_langinfo (i_langinfo.U):
2847 This variable conditionally defines the I_LANGINFO symbol,
2848 and indicates whether a C program should include <langinfo.h>.
2850 i_libutil (i_libutil.U):
2851 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2852 whether a C program should include <libutil.h>.
2854 i_limits (i_limits.U):
2855 This variable conditionally defines the I_LIMITS symbol, and indicates
2856 whether a C program may include <limits.h> to get symbols like WORD_BIT
2859 i_locale (i_locale.U):
2860 This variable conditionally defines the I_LOCALE symbol,
2861 and indicates whether a C program should include <locale.h>.
2863 i_machcthr (i_machcthr.U):
2864 This variable conditionally defines the I_MACH_CTHREADS symbol,
2865 and indicates whether a C program should include <mach/cthreads.h>.
2867 i_malloc (i_malloc.U):
2868 This variable conditionally defines the I_MALLOC symbol, and indicates
2869 whether a C program should include <malloc.h>.
2872 This variable conditionally defines the I_MATH symbol, and indicates
2873 whether a C program may include <math.h>.
2875 i_memory (i_memory.U):
2876 This variable conditionally defines the I_MEMORY symbol, and indicates
2877 whether a C program should include <memory.h>.
2879 i_mntent (i_mntent.U):
2880 This variable conditionally defines the I_MNTENT symbol, and indicates
2881 whether a C program should include <mntent.h>.
2884 This variable conditionally defines the I_NDBM symbol, which
2885 indicates to the C program that <ndbm.h> exists and should
2888 i_netdb (i_netdb.U):
2889 This variable conditionally defines the I_NETDB symbol, and indicates
2890 whether a C program should include <netdb.h>.
2892 i_neterrno (i_neterrno.U):
2893 This variable conditionally defines the I_NET_ERRNO symbol, which
2894 indicates to the C program that <net/errno.h> exists and should
2897 i_netinettcp (i_netinettcp.U):
2898 This variable conditionally defines the I_NETINET_TCP symbol,
2899 and indicates whether a C program should include <netinet/tcp.h>.
2902 This variable conditionally defines I_NETINET_IN, which indicates
2903 to the C program that it should include <netinet/in.h>. Otherwise,
2904 you may try <sys/in.h>.
2907 This variable conditionally defines the I_POLL symbol, and indicates
2908 whether a C program should include <poll.h>.
2911 This variable conditionally defines the I_PROT symbol, and indicates
2912 whether a C program should include <prot.h>.
2914 i_pthread (i_pthread.U):
2915 This variable conditionally defines the I_PTHREAD symbol,
2916 and indicates whether a C program should include <pthread.h>.
2919 This variable conditionally defines I_PWD, which indicates
2920 to the C program that it should include <pwd.h>.
2922 i_rpcsvcdbm (i_dbm.U):
2923 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2924 indicates to the C program that <rpcsvc/dbm.h> exists and should
2925 be included. Some System V systems might need this instead of <dbm.h>.
2928 This variable conditionally defines the I_SFIO symbol,
2929 and indicates whether a C program should include <sfio.h>.
2931 i_sgtty (i_termio.U):
2932 This variable conditionally defines the I_SGTTY symbol, which
2933 indicates to the C program that it should include <sgtty.h> rather
2936 i_shadow (i_shadow.U):
2937 This variable conditionally defines the I_SHADOW symbol, and indicates
2938 whether a C program should include <shadow.h>.
2940 i_socks (i_socks.U):
2941 This variable conditionally defines the I_SOCKS symbol, and indicates
2942 whether a C program should include <socks.h>.
2944 i_stdarg (i_varhdr.U):
2945 This variable conditionally defines the I_STDARG symbol, which
2946 indicates to the C program that <stdarg.h> exists and should
2949 i_stddef (i_stddef.U):
2950 This variable conditionally defines the I_STDDEF symbol, which
2951 indicates to the C program that <stddef.h> exists and should
2954 i_stdlib (i_stdlib.U):
2955 This variable conditionally defines the I_STDLIB symbol, which
2956 indicates to the C program that <stdlib.h> exists and should
2959 i_string (i_string.U):
2960 This variable conditionally defines the I_STRING symbol, which
2961 indicates that <string.h> should be included rather than <strings.h>.
2963 i_sunmath (i_sunmath.U):
2964 This variable conditionally defines the I_SUNMATH symbol, and indicates
2965 whether a C program should include <sunmath.h>.
2967 i_sysaccess (i_sysaccess.U):
2968 This variable conditionally defines the I_SYS_ACCESS symbol,
2969 and indicates whether a C program should include <sys/access.h>.
2971 i_sysdir (i_sysdir.U):
2972 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2973 whether a C program should include <sys/dir.h>.
2975 i_sysfile (i_sysfile.U):
2976 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2977 whether a C program should include <sys/file.h> to get R_OK and friends.
2979 i_sysfilio (i_sysioctl.U):
2980 This variable conditionally defines the I_SYS_FILIO symbol, which
2981 indicates to the C program that <sys/filio.h> exists and should
2982 be included in preference to <sys/ioctl.h>.
2985 This variable conditionally defines I_SYS_IN, which indicates
2986 to the C program that it should include <sys/in.h> instead of
2989 i_sysioctl (i_sysioctl.U):
2990 This variable conditionally defines the I_SYS_IOCTL symbol, which
2991 indicates to the C program that <sys/ioctl.h> exists and should
2994 i_syslog (i_syslog.U):
2995 This variable conditionally defines the I_SYSLOG symbol,
2996 and indicates whether a C program should include <syslog.h>.
2998 i_sysmman (i_sysmman.U):
2999 This variable conditionally defines the I_SYS_MMAN symbol, and
3000 indicates whether a C program should include <sys/mman.h>.
3002 i_sysmode (i_sysmode.U):
3003 This variable conditionally defines the I_SYSMODE symbol,
3004 and indicates whether a C program should include <sys/mode.h>.
3006 i_sysmount (i_sysmount.U):
3007 This variable conditionally defines the I_SYSMOUNT symbol,
3008 and indicates whether a C program should include <sys/mount.h>.
3010 i_sysndir (i_sysndir.U):
3011 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3012 whether a C program should include <sys/ndir.h>.
3014 i_sysparam (i_sysparam.U):
3015 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3016 whether a C program should include <sys/param.h>.
3018 i_sysresrc (i_sysresrc.U):
3019 This variable conditionally defines the I_SYS_RESOURCE symbol,
3020 and indicates whether a C program should include <sys/resource.h>.
3022 i_syssecrt (i_syssecrt.U):
3023 This variable conditionally defines the I_SYS_SECURITY symbol,
3024 and indicates whether a C program should include <sys/security.h>.
3026 i_sysselct (i_sysselct.U):
3027 This variable conditionally defines I_SYS_SELECT, which indicates
3028 to the C program that it should include <sys/select.h> in order to
3029 get the definition of struct timeval.
3031 i_syssockio (i_sysioctl.U):
3032 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3033 C program that socket ioctl codes may be found in <sys/sockio.h>
3034 instead of <sys/ioctl.h>.
3036 i_sysstat (i_sysstat.U):
3037 This variable conditionally defines the I_SYS_STAT symbol,
3038 and indicates whether a C program should include <sys/stat.h>.
3040 i_sysstatfs (i_sysstatfs.U):
3041 This variable conditionally defines the I_SYSSTATFS symbol,
3042 and indicates whether a C program should include <sys/statfs.h>.
3044 i_sysstatvfs (i_sysstatvfs.U):
3045 This variable conditionally defines the I_SYSSTATVFS symbol,
3046 and indicates whether a C program should include <sys/statvfs.h>.
3048 i_systime (i_time.U):
3049 This variable conditionally defines I_SYS_TIME, which indicates
3050 to the C program that it should include <sys/time.h>.
3052 i_systimek (i_time.U):
3053 This variable conditionally defines I_SYS_TIME_KERNEL, which
3054 indicates to the C program that it should include <sys/time.h>
3055 with KERNEL defined.
3057 i_systimes (i_systimes.U):
3058 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3059 whether a C program should include <sys/times.h>.
3061 i_systypes (i_systypes.U):
3062 This variable conditionally defines the I_SYS_TYPES symbol,
3063 and indicates whether a C program should include <sys/types.h>.
3065 i_sysuio (i_sysuio.U):
3066 This variable conditionally defines the I_SYSUIO symbol, and indicates
3067 whether a C program should include <sys/uio.h>.
3069 i_sysun (i_sysun.U):
3070 This variable conditionally defines I_SYS_UN, which indicates
3071 to the C program that it should include <sys/un.h> to get UNIX
3072 domain socket definitions.
3074 i_sysutsname (i_sysutsname.U):
3075 This variable conditionally defines the I_SYSUTSNAME symbol,
3076 and indicates whether a C program should include <sys/utsname.h>.
3078 i_sysvfs (i_sysvfs.U):
3079 This variable conditionally defines the I_SYSVFS symbol,
3080 and indicates whether a C program should include <sys/vfs.h>.
3082 i_syswait (i_syswait.U):
3083 This variable conditionally defines I_SYS_WAIT, which indicates
3084 to the C program that it should include <sys/wait.h>.
3086 i_termio (i_termio.U):
3087 This variable conditionally defines the I_TERMIO symbol, which
3088 indicates to the C program that it should include <termio.h> rather
3091 i_termios (i_termio.U):
3092 This variable conditionally defines the I_TERMIOS symbol, which
3093 indicates to the C program that the POSIX <termios.h> file is
3097 This variable conditionally defines I_TIME, which indicates
3098 to the C program that it should include <time.h>.
3100 i_unistd (i_unistd.U):
3101 This variable conditionally defines the I_UNISTD symbol, and indicates
3102 whether a C program should include <unistd.h>.
3104 i_ustat (i_ustat.U):
3105 This variable conditionally defines the I_USTAT symbol, and indicates
3106 whether a C program should include <ustat.h>.
3108 i_utime (i_utime.U):
3109 This variable conditionally defines the I_UTIME symbol, and indicates
3110 whether a C program should include <utime.h>.
3112 i_values (i_values.U):
3113 This variable conditionally defines the I_VALUES symbol, and indicates
3114 whether a C program may include <values.h> to get symbols like MAXLONG
3117 i_varargs (i_varhdr.U):
3118 This variable conditionally defines I_VARARGS, which indicates
3119 to the C program that it should include <varargs.h>.
3121 i_varhdr (i_varhdr.U):
3122 Contains the name of the header to be included to get va_dcl definition.
3123 Typically one of varargs.h or stdarg.h.
3125 i_vfork (i_vfork.U):
3126 This variable conditionally defines the I_VFORK symbol, and indicates
3127 whether a C program should include vfork.h.
3129 ignore_versioned_solibs (libs.U):
3130 This variable should be non-empty if non-versioned shared
3131 libraries (libfoo.so.x.y) are to be ignored (because they
3132 cannot be linked against).
3134 inc_version_list (inc_version_list.U):
3135 This variable specifies the list of subdirectories in over
3136 which perl.c:incpush() and lib/lib.pm will automatically
3137 search when adding directories to @INC. The elements in
3138 the list are separated by spaces. This is only useful
3139 if you have a perl library directory tree structured like the
3140 default one. See INSTALL for how this works. The versioned
3141 site_perl directory was introduced in 5.005, so that is the
3142 lowest possible value.
3144 inc_version_list_init (inc_version_list.U):
3145 This variable holds the same list as inc_version_list, but
3146 each item is enclosed in double quotes and separated by commas,
3147 suitable for use in the PERL_INC_VERSION_LIST initialization.
3150 This variable must preceed the normal include path to get hte
3151 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3152 Value can be "" or "/bsd43" on mips.
3155 This variable is defined but not used by Configure.
3156 The value is a plain '' and is not useful.
3158 installarchlib (archlib.U):
3159 This variable is really the same as archlibexp but may differ on
3160 those systems using AFS. For extra portability, only this variable
3161 should be used in makefiles.
3164 This variable is the same as binexp unless AFS is running in which case
3165 the user is explicitely prompted for it. This variable should always
3166 be used in your makefiles for maximum portability.
3168 installhtml1dir (html1dir.U):
3169 This variable is really the same as html1direxp, unless you are
3170 using a different installprefix. For extra portability, you
3171 should only use this variable within your makefiles.
3173 installhtml3dir (html3dir.U):
3174 This variable is really the same as html3direxp, unless you are
3175 using a different installprefix. For extra portability, you
3176 should only use this variable within your makefiles.
3178 installman1dir (man1dir.U):
3179 This variable is really the same as man1direxp, unless you are using
3180 AFS in which case it points to the read/write location whereas
3181 man1direxp only points to the read-only access location. For extra
3182 portability, you should only use this variable within your makefiles.
3184 installman3dir (man3dir.U):
3185 This variable is really the same as man3direxp, unless you are using
3186 AFS in which case it points to the read/write location whereas
3187 man3direxp only points to the read-only access location. For extra
3188 portability, you should only use this variable within your makefiles.
3190 installprefix (installprefix.U):
3191 This variable holds the name of the directory below which
3192 "make install" will install the package. For most users, this
3193 is the same as prefix. However, it is useful for
3194 installing the software into a different (usually temporary)
3195 location after which it can be bundled up and moved somehow
3196 to the final location specified by prefix.
3198 installprefixexp (installprefix.U):
3199 This variable holds the full absolute path of installprefix
3200 with all ~-expansion done.
3202 installprivlib (privlib.U):
3203 This variable is really the same as privlibexp but may differ on
3204 those systems using AFS. For extra portability, only this variable
3205 should be used in makefiles.
3207 installscript (scriptdir.U):
3208 This variable is usually the same as scriptdirexp, unless you are on
3209 a system running AFS, in which case they may differ slightly. You
3210 should always use this variable within your makefiles for portability.
3212 installsitearch (sitearch.U):
3213 This variable is really the same as sitearchexp but may differ on
3214 those systems using AFS. For extra portability, only this variable
3215 should be used in makefiles.
3217 installsitebin (sitebin.U):
3218 This variable is usually the same as sitebinexp, unless you are on
3219 a system running AFS, in which case they may differ slightly. You
3220 should always use this variable within your makefiles for portability.
3222 installsitehtml1dir (sitehtml1dir.U):
3223 This variable is really the same as sitehtml1direxp, unless you are using
3224 AFS in which case it points to the read/write location whereas
3225 html1direxp only points to the read-only access location. For extra
3226 portability, you should only use this variable within your makefiles.
3228 installsitehtml3dir (sitehtml3dir.U):
3229 This variable is really the same as sitehtml3direxp, unless you are using
3230 AFS in which case it points to the read/write location whereas
3231 html3direxp only points to the read-only access location. For extra
3232 portability, you should only use this variable within your makefiles.
3234 installsitelib (sitelib.U):
3235 This variable is really the same as sitelibexp but may differ on
3236 those systems using AFS. For extra portability, only this variable
3237 should be used in makefiles.
3239 installsiteman1dir (siteman1dir.U):
3240 This variable is really the same as siteman1direxp, unless you are using
3241 AFS in which case it points to the read/write location whereas
3242 man1direxp only points to the read-only access location. For extra
3243 portability, you should only use this variable within your makefiles.
3245 installsiteman3dir (siteman3dir.U):
3246 This variable is really the same as siteman3direxp, unless you are using
3247 AFS in which case it points to the read/write location whereas
3248 man3direxp only points to the read-only access location. For extra
3249 portability, you should only use this variable within your makefiles.
3251 installsitescript (sitescript.U):
3252 This variable is usually the same as sitescriptexp, unless you are on
3253 a system running AFS, in which case they may differ slightly. You
3254 should always use this variable within your makefiles for portability.
3256 installstyle (installstyle.U):
3257 This variable describes the "style" of the perl installation.
3258 This is intended to be useful for tools that need to
3259 manipulate entire perl distributions. Perl itself doesn't use
3260 this to find its libraries -- the library directories are
3261 stored directly in Config.pm. Currently, there are only two
3262 styles: "lib" and "lib/perl5". The default library locations
3263 (e.g. privlib, sitelib) are either $prefix/lib or
3264 $prefix/lib/perl5. The former is useful if $prefix is a
3265 directory dedicated to perl (e.g. /opt/perl), while the latter
3266 is useful if $prefix is shared by many packages, e.g. if
3269 Unfortunately, while this "style" variable is used to set
3270 defaults for all three directory hierarchies (core, vendor, and
3271 site), there is no guarantee that the same style is actually
3272 appropriate for all those directories. For example, $prefix
3273 might be /opt/perl, but $siteprefix might be /usr/local.
3274 (Perhaps, in retrospect, the "lib" style should never have been
3275 supported, but it did seem like a nice idea at the time.)
3277 The situation is even less clear for tools such as MakeMaker
3278 that can be used to install additional modules into
3279 non-standard places. For example, if a user intends to install
3280 a module into a private directory (perhaps by setting PREFIX on
3281 the Makefile.PL command line), then there is no reason to
3282 assume that the Configure-time $installstyle setting will be
3283 relevant for that PREFIX.
3285 This may later be extended to include other information, so
3286 be careful with pattern-matching on the results.
3288 For compatibility with perl5.005 and earlier, the default
3289 setting is based on whether or not $prefix contains the string
3292 installusrbinperl (instubperl.U):
3293 This variable tells whether Perl should be installed also as
3294 /usr/bin/perl in addition to
3297 installvendorarch (vendorarch.U):
3298 This variable is really the same as vendorarchexp but may differ on
3299 those systems using AFS. For extra portability, only this variable
3300 should be used in makefiles.
3302 installvendorbin (vendorbin.U):
3303 This variable is really the same as vendorbinexp but may differ on
3304 those systems using AFS. For extra portability, only this variable
3305 should be used in makefiles.
3307 installvendorhtml1dir (vendorhtml1dir.U):
3308 This variable is really the same as vendorhtml1direxp but may differ on
3309 those systems using AFS. For extra portability, only this variable
3310 should be used in makefiles.
3312 installvendorhtml3dir (vendorhtml3dir.U):
3313 This variable is really the same as vendorhtml3direxp but may differ on
3314 those systems using AFS. For extra portability, only this variable
3315 should be used in makefiles.
3317 installvendorlib (vendorlib.U):
3318 This variable is really the same as vendorlibexp but may differ on
3319 those systems using AFS. For extra portability, only this variable
3320 should be used in makefiles.
3322 installvendorman1dir (vendorman1dir.U):
3323 This variable is really the same as vendorman1direxp but may differ on
3324 those systems using AFS. For extra portability, only this variable
3325 should be used in makefiles.
3327 installvendorman3dir (vendorman3dir.U):
3328 This variable is really the same as vendorman3direxp but may differ on
3329 those systems using AFS. For extra portability, only this variable
3330 should be used in makefiles.
3332 installvendorscript (vendorscript.U):
3333 This variable is really the same as vendorscriptexp but may differ on
3334 those systems using AFS. For extra portability, only this variable
3335 should be used in makefiles.
3337 intsize (intsize.U):
3338 This variable contains the value of the INTSIZE symbol, which
3339 indicates to the C program how many bytes there are in an int.
3341 issymlink (issymlink.U):
3342 This variable holds the test command to test for a symbolic link
3343 (if they are supported). Typical values include 'test -h' and
3346 ivdformat (perlxvf.U):
3347 This variable contains the format string used for printing
3348 a Perl IV as a signed decimal integer.
3351 This variable is the size of an IV in bytes.
3354 This variable contains the C type used for Perl's IV.
3356 known_extensions (Extensions.U):
3357 This variable holds a list of all XS extensions included in
3361 This variable is defined but not used by Configure.
3362 The value is a plain '' and is not useful.
3365 This variable indicates the program to be used to link
3366 libraries for dynamic loading. On some systems, it is 'ld'.
3367 On ELF systems, it should be $cc. Mostly, we'll try to respect
3368 the hint file setting.
3370 lddlflags (dlsrc.U):
3371 This variable contains any special flags that might need to be
3372 passed to $ld to create a shared library suitable for dynamic
3373 loading. It is up to the makefile to use it. For hpux, it
3374 should be '-b'. For sunos 4.1, it is empty.
3376 ldflags (ccflags.U):
3377 This variable contains any additional C loader flags desired by
3378 the user. It is up to the Makefile to use this.
3380 ldflags_uselargefiles (uselfs.U):
3381 This variable contains the loader flags needed by large file builds
3382 and added to ldflags by hints files.
3384 ldlibpthname (libperl.U):
3385 This variable holds the name of the shared library
3386 search path, often LD_LIBRARY_PATH. To get an empty
3387 string, the hints file must set this to 'none'.
3390 This variable is used internally by Configure to determine the
3391 full pathname (if any) of the less program. After Configure runs,
3392 the value is reset to a plain "less" and is not useful.
3395 This is an old synonym for _a.
3398 This variable contains the location of the C library.
3400 libperl (libperl.U):
3401 The perl executable is obtained by linking perlmain.c with
3402 libperl, any static extensions (usually just DynaLoader),
3403 and any other libraries needed on this system. libperl
3404 is usually libperl.a, but can also be libperl.so.xxx if
3405 the user wishes to build a perl executable with a shared
3409 This variable holds the general path (space-separated) used to find
3410 libraries. It is intended to be used by other units.
3413 This variable holds the additional libraries we want to use.
3414 It is up to the Makefile to deal with it. The list can be empty.
3417 This variable holds the directory names aka dirnames of the libraries
3418 we found and accepted, duplicates are removed.
3421 This variable holds the filenames aka basenames of the libraries
3422 we found and accepted.
3425 This variable holds the full pathnames of the libraries
3426 we found and accepted.
3429 This variable holds the directory names probed for libraries.
3431 libswanted (Myinit.U):
3432 This variable holds a list of all the libraries we want to
3433 search. The order is chosen to pick up the c library
3434 ahead of ucb or bsd libraries for SVR4.
3436 libswanted_uselargefiles (uselfs.U):
3437 This variable contains the libraries needed by large file builds
3438 and added to ldflags by hints files. It is a space separated list
3439 of the library names without the "lib" prefix or any suffix, just
3443 This variable is defined but not used by Configure.
3444 The value is a plain '' and is not useful.
3447 This variable is defined but not used by Configure.
3448 The value is a plain '' and is not useful.
3450 lkflags (ccflags.U):
3451 This variable contains any additional C partial linker flags desired by
3452 the user. It is up to the Makefile to use this.
3455 This variable is used internally by Configure to determine the
3456 full pathname (if any) of the ln program. After Configure runs,
3457 the value is reset to a plain "ln" and is not useful.
3460 This variable holds the name of the command to make
3461 symbolic links (if they are supported). It can be used
3462 in the Makefile. It is either 'ln -s' or 'ln'
3464 localtime_r_proto (d_localtime_r.U):
3465 This variable encodes the prototype of localtime_r.
3466 It is zero if d_localtime_r is undef, and one of the
3467 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3470 locincpth (ccflags.U):
3471 This variable contains a list of additional directories to be
3472 searched by the compiler. The appropriate '-I' directives will
3473 be added to ccflags. This is intended to simplify setting
3474 local directories from the Configure command line.
3475 It's not much, but it parallels the loclibpth stuff in libpth.U.
3477 loclibpth (libpth.U):
3478 This variable holds the paths (space-separated) used to find local
3479 libraries. It is prepended to libpth, and is intended to be easily
3480 set from the command line.
3482 longdblsize (d_longdbl.U):
3483 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3484 indicates to the C program how many bytes there are in a long double,
3485 if this system supports long doubles.
3487 longlongsize (d_longlong.U):
3488 This variable contains the value of the LONGLONGSIZE symbol, which
3489 indicates to the C program how many bytes there are in a long long,
3490 if this system supports long long.
3492 longsize (intsize.U):
3493 This variable contains the value of the LONGSIZE symbol, which
3494 indicates to the C program how many bytes there are in a long.
3497 This variable is defined but not used by Configure.
3498 The value is a plain '' and is not useful.
3501 This variable is defined but not used by Configure.
3502 The value is a plain '' and is not useful.
3505 This variable is used internally by Configure to determine the
3506 full pathname (if any) of the ls program. After Configure runs,
3507 the value is reset to a plain "ls" and is not useful.
3509 lseeksize (lseektype.U):
3510 This variable defines lseektype to be something like off_t, long,
3511 or whatever type is used to declare lseek offset's type in the
3512 kernel (which also appears to be lseek's return type).
3514 lseektype (lseektype.U):
3515 This variable defines lseektype to be something like off_t, long,
3516 or whatever type is used to declare lseek offset's type in the
3517 kernel (which also appears to be lseek's return type).
3520 This variable indicates that the Misc Attribute Definition code is to
3524 This variable is defined but not used by Configure.
3525 The value is a plain '' and is not useful.
3528 This variable is defined but not used by Configure.
3529 The value is a plain '' and is not useful.
3532 This variable is used internally by Configure to determine the
3533 full pathname (if any) of the make program. After Configure runs,
3534 the value is reset to a plain "make" and is not useful.
3536 make_set_make (make.U):
3537 Some versions of 'make' set the variable MAKE. Others do not.
3538 This variable contains the string to be included in Makefile.SH
3539 so that MAKE is set if needed, and not if not needed.
3540 Possible values are:
3542 make_set_make='#' # If your make program handles this for you,
3544 make_set_make="MAKE=$make" # if it doesn't.
3546 This uses a comment character to distinguish a
3547 'set' value (from a previous config.sh or Configure '-D' option)
3548 from an uncomputed value.
3550 mallocobj (mallocsrc.U):
3551 This variable contains the name of the malloc.o that this package
3552 generates, if that malloc.o is preferred over the system malloc.
3553 Otherwise the value is null. This variable is intended for generating
3554 Makefiles. See mallocsrc.
3556 mallocsrc (mallocsrc.U):
3557 This variable contains the name of the malloc.c that comes with
3558 the package, if that malloc.c is preferred over the system malloc.
3559 Otherwise the value is null. This variable is intended for generating
3562 malloctype (mallocsrc.U):
3563 This variable contains the kind of ptr returned by malloc and realloc.
3565 man1dir (man1dir.U):
3566 This variable contains the name of the directory in which manual
3567 source pages are to be put. It is the responsibility of the
3568 Makefile.SH to get the value of this into the proper command.
3569 You must be prepared to do the ~name expansion yourself.
3571 man1direxp (man1dir.U):
3572 This variable is the same as the man1dir variable, but is filename
3573 expanded at configuration time, for convenient use in makefiles.
3575 man1ext (man1dir.U):
3576 This variable contains the extension that the manual page should
3577 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3580 man3dir (man3dir.U):
3581 This variable contains the name of the directory in which manual
3582 source pages are to be put. It is the responsibility of the
3583 Makefile.SH to get the value of this into the proper command.
3584 You must be prepared to do the ~name expansion yourself.
3586 man3direxp (man3dir.U):
3587 This variable is the same as the man3dir variable, but is filename
3588 expanded at configuration time, for convenient use in makefiles.
3590 man3ext (man3dir.U):
3591 This variable contains the extension that the manual page should
3592 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3596 This variable is used internally by Configure to determine the
3597 full pathname (if any) of the Mcc program. After Configure runs,
3598 the value is reset to a plain "Mcc" and is not useful.
3600 mips_type (usrinc.U):
3601 This variable holds the environment type for the mips system.
3602 Possible values are "BSD 4.3" and "System V".
3604 mistrustnm (Csym.U):
3605 This variable can be used to establish a fallthrough for the cases
3606 where nm fails to find a symbol. If usenm is false or usenm is true
3607 and mistrustnm is false, this variable has no effect. If usenm is true
3608 and mistrustnm is "compile", a test program will be compiled to try to
3609 find any symbol that can't be located via nm lookup. If mistrustnm is
3610 "run", the test program will be run as well as being compiled.
3613 This variable is used internally by Configure to determine the
3614 full pathname (if any) of the mkdir program. After Configure runs,
3615 the value is reset to a plain "mkdir" and is not useful.
3617 mmaptype (d_mmap.U):
3618 This symbol contains the type of pointer returned by mmap()
3619 (and simultaneously the type of the first argument).
3620 It can be 'void *' or 'caddr_t'.
3622 modetype (modetype.U):
3623 This variable defines modetype to be something like mode_t,
3624 int, unsigned short, or whatever type is used to declare file
3625 modes for system calls.
3628 This variable is used internally by Configure to determine the
3629 full pathname (if any) of the more program. After Configure runs,
3630 the value is reset to a plain "more" and is not useful.
3632 multiarch (multiarch.U):
3633 This variable conditionally defines the MULTIARCH symbol
3634 which signifies the presence of multiplatform files.
3635 This is normally set by hints files.
3638 This variable is defined but not used by Configure.
3639 The value is a plain '' and is not useful.
3641 myarchname (archname.U):
3642 This variable holds the architecture name computed by Configure in
3643 a previous run. It is not intended to be perused by any user and
3644 should never be set in a hint file.
3646 mydomain (myhostname.U):
3647 This variable contains the eventual value of the MYDOMAIN symbol,
3648 which is the domain of the host the program is going to run on.
3649 The domain must be appended to myhostname to form a complete host name.
3650 The dot comes with mydomain, and need not be supplied by the program.
3652 myhostname (myhostname.U):
3653 This variable contains the eventual value of the MYHOSTNAME symbol,
3654 which is the name of the host the program is going to run on.
3655 The domain is not kept with hostname, but must be gotten from mydomain.
3656 The dot comes with mydomain, and need not be supplied by the program.
3658 myuname (Oldconfig.U):
3659 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3660 pseudo variables assignments in the output are stripped, thank you. The
3661 whole thing is then lower-cased.
3664 This variable contains the '-n' flag if that is what causes the echo
3665 command to suppress newline. Otherwise it is null. Correct usage is
3666 $echo $n "prompt for a question: $c".
3668 need_va_copy (need_va_copy.U):
3669 This symbol, if defined, indicates that the system stores
3670 the variable argument list datatype, va_list, in a format
3671 that cannot be copied by simple assignment, so that some
3672 other means must be used when copying is required.
3673 As such systems vary in their provision (or non-provision)
3674 of copying mechanisms, handy.h defines a platform-
3675 independent macro, Perl_va_copy(src, dst), to do the job.
3677 netdb_hlen_type (netdbtype.U):
3678 This variable holds the type used for the 2nd argument to
3679 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3680 This is only useful if you have gethostbyaddr(), naturally.
3682 netdb_host_type (netdbtype.U):
3683 This variable holds the type used for the 1st argument to
3684 gethostbyaddr(). Usually, this is char * or void *, possibly
3685 with or without a const prefix.
3686 This is only useful if you have gethostbyaddr(), naturally.
3688 netdb_name_type (netdbtype.U):
3689 This variable holds the type used for the argument to
3690 gethostbyname(). Usually, this is char * or const char *.
3691 This is only useful if you have gethostbyname(), naturally.
3693 netdb_net_type (netdbtype.U):
3694 This variable holds the type used for the 1st argument to
3695 getnetbyaddr(). Usually, this is int or long.
3696 This is only useful if you have getnetbyaddr(), naturally.
3699 This variable is used internally by Configure to determine the
3700 full pathname (if any) of the nm program. After Configure runs,
3701 the value is reset to a plain "nm" and is not useful.
3704 This variable holds the options that may be necessary for nm.
3706 nm_so_opt (usenm.U):
3707 This variable holds the options that may be necessary for nm
3708 to work on a shared library but that can not be used on an
3709 archive library. Currently, this is only used by Linux, where
3710 nm --dynamic is *required* to get symbols from an ELF library which
3711 has been stripped, but nm --dynamic is *fatal* on an archive library.
3712 Maybe Linux should just always set usenm=false.
3714 nonxs_ext (Extensions.U):
3715 This variable holds a list of all non-xs extensions included
3716 in the package. All of them will be built.
3719 This variable is used internally by Configure to determine the
3720 full pathname (if any) of the nroff program. After Configure runs,
3721 the value is reset to a plain "nroff" and is not useful.
3723 nv_preserves_uv_bits (perlxv.U):
3724 This variable indicates how many of bits type uvtype
3725 a variable nvtype can preserve.
3727 nveformat (perlxvf.U):
3728 This variable contains the format string used for printing
3729 a Perl NV using %e-ish floating point format.
3731 nvEUformat (perlxvf.U):
3732 This variable contains the format string used for printing
3733 a Perl NV using %E-ish floating point format.
3735 nvfformat (perlxvf.U):
3736 This variable confains the format string used for printing
3737 a Perl NV using %f-ish floating point format.
3739 nvFUformat (perlxvf.U):
3740 This variable confains the format string used for printing
3741 a Perl NV using %F-ish floating point format.
3743 nvgformat (perlxvf.U):
3744 This variable contains the format string used for printing
3745 a Perl NV using %g-ish floating point format.
3747 nvGUformat (perlxvf.U):
3748 This variable contains the format string used for printing
3749 a Perl NV using %G-ish floating point format.
3752 This variable is the size of an NV in bytes.
3755 This variable contains the C type used for Perl's NV.
3757 o_nonblock (nblock_io.U):
3758 This variable bears the symbol value to be used during open() or fcntl()
3759 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3760 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3761 but that is only supported by some devices.
3764 This is an old synonym for _o.
3766 old_pthread_create_joinable (d_pthrattrj.U):
3767 This variable defines the constant to use for creating joinable
3768 (aka undetached) pthreads. Unused if pthread.h defines
3769 PTHREAD_CREATE_JOINABLE. If used, possible values are
3770 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3772 optimize (ccflags.U):
3773 This variable contains any optimizer/debugger flag that should be used.
3774 It is up to the Makefile to use it.
3776 orderlib (orderlib.U):
3777 This variable is "true" if the components of libraries must be ordered
3778 (with `lorder $* | tsort`) before placing them in an archive. Set to
3779 "false" if ranlib or ar can generate random libraries.
3781 osname (Oldconfig.U):
3782 This variable contains the operating system name (e.g. sunos,
3783 solaris, hpux, etc.). It can be useful later on for setting
3784 defaults. Any spaces are replaced with underscores. It is set
3785 to a null string if we can't figure it out.
3787 osvers (Oldconfig.U):
3788 This variable contains the operating system version (e.g.
3789 4.1.3, 5.2, etc.). It is primarily used for helping select
3790 an appropriate hints file, but might be useful elsewhere for
3791 setting defaults. It is set to '' if we can't figure it out.
3792 We try to be flexible about how much of the version number
3793 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3794 same for this package, hints files might just be os_4.0 or
3795 os_4.1, etc., not keeping separate files for each little release.
3797 otherlibdirs (otherlibdirs.U):
3798 This variable contains a colon-separated set of paths for the perl
3799 binary to search for additional library files or modules.
3800 These directories will be tacked to the end of @INC.
3801 Perl will automatically search below each path for version-
3802 and architecture-specific directories. See inc_version_list
3804 A value of ' ' means 'none' and is used to preserve this value
3805 for the next run through Configure.
3807 package (package.U):
3808 This variable contains the name of the package being constructed.
3809 It is primarily intended for the use of later Configure units.
3812 This variable contains the name of the preferred pager on the system.
3813 Usual values are (the full pathnames of) more, less, pg, or cat.
3816 This variable contains a command that produces the text of the
3817 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3818 "ypcat passwd" when NIS is used.
3819 On some systems, such as os390, there may be no equivalent
3820 command, in which case this variable is unset.
3822 patchlevel (patchlevel.U):
3823 The patchlevel level of this package.
3824 The value of patchlevel comes from the patchlevel.h file.
3825 In a version number such as 5.6.1, this is the "6".
3826 In patchlevel.h, this is referred to as "PERL_VERSION".
3829 This is an old synonym for p_ in Head.U, the character
3830 used to separate elements in the command shell search PATH.
3833 This variable contains the full path (if any) to a previously
3834 installed perl5.005 or later suitable for running the script
3835 to determine inc_version_list.
3838 This variable is defined but not used by Configure.
3839 The value is a plain '' and is not useful.
3841 perl_patchlevel (patchlevel.U):
3842 This is the Perl patch level, a numeric change identifier,
3843 as defined by whichever source code maintenance system
3844 is used to maintain the patches; currently Perforce.
3845 It does not correlate with the Perl version numbers or
3846 the maintenance versus development dichotomy except
3847 by also being increasing.
3849 PERL_REVISION (Oldsyms.U):
3850 In a Perl version number such as 5.6.2, this is the 5.
3851 This value is manually set in patchlevel.h
3853 PERL_SUBVERSION (Oldsyms.U):
3854 In a Perl version number such as 5.6.2, this is the 2.
3855 Values greater than 50 represent potentially unstable
3856 development subversions.
3857 This value is manually set in patchlevel.h
3859 PERL_VERSION (Oldsyms.U):
3860 In a Perl version number such as 5.6.2, this is the 6.
3861 This value is manually set in patchlevel.h
3863 perladmin (perladmin.U):
3864 Electronic mail address of the perl5 administrator.
3867 The list of libraries needed by Perl only (any libraries needed
3868 by extensions only will by dropped, if using dynamic loading).
3870 perlpath (perlpath.U):
3871 This variable contains the eventual value of the PERLPATH symbol,
3872 which contains the name of the perl interpreter to be used in
3873 shell scripts and in the "eval 'exec'" idiom. This variable is
3874 not necessarily the pathname of the file containing the perl
3875 interpreter; you must append the executable extension (_exe) if
3876 it is not already present. Note that Perl code that runs during
3877 the Perl build process cannot reference this variable, as Perl
3878 may not have been installed, or even if installed, may be a
3879 different version of Perl.
3882 This variable is used internally by Configure to determine the
3883 full pathname (if any) of the pg program. After Configure runs,
3884 the value is reset to a plain "pg" and is not useful.
3886 phostname (myhostname.U):
3887 This variable contains the eventual value of the PHOSTNAME symbol,
3888 which is a command that can be fed to popen() to get the host name.
3889 The program should probably not presume that the domain is or isn't
3892 pidtype (pidtype.U):
3893 This variable defines PIDTYPE to be something like pid_t, int,
3894 ushort, or whatever type is used to declare process ids in the kernel.
3897 Holds the private path used by Configure to find out the libraries.
3898 Its value is prepend to libpth. This variable takes care of special
3899 machines, like the mips. Usually, it should be empty.
3902 This variable is defined but not used by Configure.
3903 The value is a plain '' and is not useful.
3906 This variable is defined but not used by Configure.
3907 The value is a plain '' and is not useful.
3910 This variable holds the name of the directory below which the
3911 user will install the package. Usually, this is /usr/local, and
3912 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3913 man pages in /usr/local/man, etc. It is only used to set defaults
3914 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3916 prefixexp (prefix.U):
3917 This variable holds the full absolute path of the directory below
3918 which the user will install the package. Derived from prefix.
3920 privlib (privlib.U):
3921 This variable contains the eventual value of the PRIVLIB symbol,
3922 which is the name of the private library for this package. It may
3923 have a ~ on the front. It is up to the makefile to eventually create
3924 this directory while performing installation (with ~ substitution).
3926 privlibexp (privlib.U):
3927 This variable is the ~name expanded version of privlib, so that you
3928 may use it directly in Makefiles or shell scripts.
3930 procselfexe (d_procselfexe.U):
3931 If d_procselfexe is defined, $procselfexe is the filename
3932 of the symbolic link pointing to the absolute pathname of
3933 the executing program.
3935 prototype (prototype.U):
3936 This variable holds the eventual value of CAN_PROTOTYPE, which
3937 indicates the C compiler can handle funciton prototypes.
3939 ptrsize (ptrsize.U):
3940 This variable contains the value of the PTRSIZE symbol, which
3941 indicates to the C program how many bytes there are in a pointer.
3943 quadkind (quadtype.U):
3944 This variable, if defined, encodes the type of a quad:
3945 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3947 quadtype (quadtype.U):
3948 This variable defines Quad_t to be something like long, int,
3949 long long, int64_t, or whatever type is used for 64-bit integers.
3951 randbits (randfunc.U):
3952 Indicates how many bits are produced by the function used to
3953 generate normalized random numbers.
3955 randfunc (randfunc.U):
3956 Indicates the name of the random number function to use.
3957 Values include drand48, random, and rand. In C programs,
3958 the 'Drand01' macro is defined to generate uniformly distributed
3959 random numbers over the range [0., 1.[ (see drand01 and nrand).
3961 random_r_proto (d_random_r.U):
3962 This variable encodes the prototype of random_r.
3963 It is zero if d_random_r is undef, and one of the
3964 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
3967 randseedtype (randfunc.U):
3968 Indicates the type of the argument of the seedfunc.
3970 ranlib (orderlib.U):
3971 This variable is set to the pathname of the ranlib program, if it is
3972 needed to generate random libraries. Set to ":" if ar can generate
3973 random libraries or if random libraries are not supported
3975 rd_nodata (nblock_io.U):
3976 This variable holds the return code from read() when no data is
3977 present. It should be -1, but some systems return 0 when O_NDELAY is
3978 used, which is a shame because you cannot make the difference between
3979 no data and an EOF.. Sigh!
3981 readdir64_r_proto (d_readdir64_r.U):
3982 This variable encodes the prototype of readdir64_r.
3983 It is zero if d_readdir64_r is undef, and one of the
3984 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
3987 readdir_r_proto (d_readdir_r.U):
3988 This variable encodes the prototype of readdir_r.
3989 It is zero if d_readdir_r is undef, and one of the
3990 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
3993 revision (patchlevel.U):
3994 The value of revision comes from the patchlevel.h file.
3995 In a version number such as 5.6.1, this is the "5".
3996 In patchlevel.h, this is referred to as "PERL_REVISION".
3999 This variable is used internally by Configure to determine the
4000 full pathname (if any) of the rm program. After Configure runs,
4001 the value is reset to a plain "rm" and is not useful.
4004 This variable is defined but not used by Configure.
4005 The value is a plain '' and is not useful.
4008 This variable contains the command used by Configure
4009 to copy and execute a cross-compiled executable in the
4010 target host. Useful and available only during Perl build.
4011 Empty string '' if not cross-compiling.
4014 This variable contains 'true' or 'false' depending whether the
4015 nm extraction should be performed or not, according to the value
4016 of usenm and the flags on the Configure command line.
4018 sched_yield (d_pthread_y.U):
4019 This variable defines the way to yield the execution
4020 of the current thread.
4022 scriptdir (scriptdir.U):
4023 This variable holds the name of the directory in which the user wants
4024 to put publicly scripts for the package in question. It is either
4025 the same directory as for binaries, or a special one that can be
4026 mounted across different architectures, like /usr/share. Programs
4027 must be prepared to deal with ~name expansion.
4029 scriptdirexp (scriptdir.U):
4030 This variable is the same as scriptdir, but is filename expanded
4031 at configuration time, for programs not wanting to bother with it.
4034 This variable is used internally by Configure to determine the
4035 full pathname (if any) of the sed program. After Configure runs,
4036 the value is reset to a plain "sed" and is not useful.
4038 seedfunc (randfunc.U):
4039 Indicates the random number generating seed function.
4040 Values include srand48, srandom, and srand.
4042 selectminbits (selectminbits.U):
4043 This variable holds the minimum number of bits operated by select.
4044 That is, if you do select(n, ...), how many bits at least will be
4045 cleared in the masks if some activity is detected. Usually this
4046 is either n or 32*ceil(n/32), especially many little-endians do
4047 the latter. This is only useful if you have select(), naturally.
4049 selecttype (selecttype.U):
4050 This variable holds the type used for the 2nd, 3rd, and 4th
4051 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4052 is defined, and 'int *' otherwise. This is only useful if you
4053 have select(), naturally.
4056 This variable is defined but not used by Configure.
4057 The value is a plain '' and is not useful.
4059 setgrent_r_proto (d_setgrent_r.U):
4060 This variable encodes the prototype of setgrent_r.
4061 It is zero if d_setgrent_r is undef, and one of the
4062 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4065 sethostent_r_proto (d_sethostent_r.U):
4066 This variable encodes the prototype of sethostent_r.
4067 It is zero if d_sethostent_r is undef, and one of the
4068 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4071 setlocale_r_proto (d_setlocale_r.U):
4072 This variable encodes the prototype of setlocale_r.
4073 It is zero if d_setlocale_r is undef, and one of the
4074 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4077 setnetent_r_proto (d_setnetent_r.U):
4078 This variable encodes the prototype of setnetent_r.
4079 It is zero if d_setnetent_r is undef, and one of the
4080 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4083 setprotoent_r_proto (d_setprotoent_r.U):
4084 This variable encodes the prototype of setprotoent_r.
4085 It is zero if d_setprotoent_r is undef, and one of the
4086 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4089 setpwent_r_proto (d_setpwent_r.U):
4090 This variable encodes the prototype of setpwent_r.
4091 It is zero if d_setpwent_r is undef, and one of the
4092 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4095 setservent_r_proto (d_setservent_r.U):
4096 This variable encodes the prototype of setservent_r.
4097 It is zero if d_setservent_r is undef, and one of the
4098 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4102 This variable contains the full pathname of the shell used
4103 on this system to execute Bourne shell scripts. Usually, this will be
4104 /bin/sh, though it's possible that some systems will have /bin/ksh,
4105 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4107 This unit comes before Options.U, so you can't set sh with a '-D'
4108 option, though you can override this (and startsh)
4109 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4112 This variable is defined but not used by Configure.
4113 The value is a plain '' and is not useful.
4115 sharpbang (spitshell.U):
4116 This variable contains the string #! if this system supports that
4119 shmattype (d_shmat.U):
4120 This symbol contains the type of pointer returned by shmat().
4121 It can be 'void *' or 'char *'.
4123 shortsize (intsize.U):
4124 This variable contains the value of the SHORTSIZE symbol which
4125 indicates to the C program how many bytes there are in a short.
4127 shrpenv (libperl.U):
4128 If the user builds a shared libperl.so, then we need to tell the
4129 'perl' executable where it will be able to find the installed libperl.so.
4130 One way to do this on some systems is to set the environment variable
4131 LD_RUN_PATH to the directory that will be the final location of the
4132 shared libperl.so. The makefile can use this with something like
4133 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4135 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4138 See the main perl Makefile.SH for actual working usage.
4139 Alternatively, we might be able to use a command line option such
4140 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4141 $archlibexp/CORE (Linux).
4143 shsharp (spitshell.U):
4144 This variable tells further Configure units whether your sh can
4147 sig_count (sig_name.U):
4148 This variable holds a number larger than the largest valid
4149 signal number. This is usually the same as the NSIG macro.
4151 sig_name (sig_name.U):
4152 This variable holds the signal names, space separated. The leading
4153 SIG in signal name is removed. A ZERO is prepended to the list.
4154 This is currently not used, sig_name_init is used instead.
4156 sig_name_init (sig_name.U):
4157 This variable holds the signal names, enclosed in double quotes and
4158 separated by commas, suitable for use in the SIG_NAME definition
4159 below. A "ZERO" is prepended to the list, and the list is
4160 terminated with a plain 0. The leading SIG in signal names
4161 is removed. See sig_num.
4163 sig_num (sig_name.U):
4164 This variable holds the signal numbers, space separated. A ZERO is
4165 prepended to the list (corresponding to the fake SIGZERO).
4166 Those numbers correspond to the value of the signal listed
4167 in the same place within the sig_name list.
4168 This is currently not used, sig_num_init is used instead.
4170 sig_num_init (sig_name.U):
4171 This variable holds the signal numbers, enclosed in double quotes and
4172 separated by commas, suitable for use in the SIG_NUM definition
4173 below. A "ZERO" is prepended to the list, and the list is
4174 terminated with a plain 0.
4176 sig_size (sig_name.U):
4177 This variable contains the number of elements of the sig_name
4180 signal_t (d_voidsig.U):
4181 This variable holds the type of the signal handler (void or int).
4183 sitearch (sitearch.U):
4184 This variable contains the eventual value of the SITEARCH symbol,
4185 which is the name of the private library for this package. It may
4186 have a ~ on the front. It is up to the makefile to eventually create
4187 this directory while performing installation (with ~ substitution).
4188 The standard distribution will put nothing in this directory.
4189 After perl has been installed, users may install their own local
4190 architecture-dependent modules in this directory with
4191 MakeMaker Makefile.PL
4192 or equivalent. See INSTALL for details.
4194 sitearchexp (sitearch.U):
4195 This variable is the ~name expanded version of sitearch, so that you
4196 may use it directly in Makefiles or shell scripts.
4198 sitebin (sitebin.U):
4199 This variable holds the name of the directory in which the user wants
4200 to put add-on publicly executable files for the package in question. It
4201 is most often a local directory such as /usr/local/bin. Programs using
4202 this variable must be prepared to deal with ~name substitution.
4203 The standard distribution will put nothing in this directory.
4204 After perl has been installed, users may install their own local
4205 executables in this directory with
4206 MakeMaker Makefile.PL
4207 or equivalent. See INSTALL for details.
4209 sitebinexp (sitebin.U):
4210 This is the same as the sitebin variable, but is filename expanded at
4211 configuration time, for use in your makefiles.
4213 sitehtml1dir (sitehtml1dir.U):
4214 This variable contains the name of the directory in which site-specific
4215 html source pages are to be put. It is the responsibility of the
4216 Makefile.SH to get the value of this into the proper command.
4217 You must be prepared to do the ~name expansion yourself.
4218 The standard distribution will put nothing in this directory.
4219 After perl has been installed, users may install their own local
4220 html pages in this directory with
4221 MakeMaker Makefile.PL
4222 or equivalent. See INSTALL for details.
4224 sitehtml1direxp (sitehtml1dir.U):
4225 This variable is the same as the sitehtml1dir variable, but is filename
4226 expanded at configuration time, for convenient use in makefiles.
4228 sitehtml3dir (sitehtml3dir.U):
4229 This variable contains the name of the directory in which site-specific
4230 library html source pages are to be put. It is the responsibility of the
4231 Makefile.SH to get the value of this into the proper command.
4232 You must be prepared to do the ~name expansion yourself.
4233 The standard distribution will put nothing in this directory.
4234 After perl has been installed, users may install their own local
4235 library html pages in this directory with
4236 MakeMaker Makefile.PL
4237 or equivalent. See INSTALL for details.
4239 sitehtml3direxp (sitehtml3dir.U):
4240 This variable is the same as the sitehtml3dir variable, but is filename
4241 expanded at configuration time, for convenient use in makefiles.
4243 sitelib (sitelib.U):
4244 This variable contains the eventual value of the SITELIB symbol,
4245 which is the name of the private library for this package. It may
4246 have a ~ on the front. It is up to the makefile to eventually create
4247 this directory while performing installation (with ~ substitution).
4248 The standard distribution will put nothing in this directory.
4249 After perl has been installed, users may install their own local
4250 architecture-independent modules in this directory with
4251 MakeMaker Makefile.PL
4252 or equivalent. See INSTALL for details.
4254 sitelib_stem (sitelib.U):
4255 This variable is $sitelibexp with any trailing version-specific component
4256 removed. The elements in inc_version_list (inc_version_list.U) can
4257 be tacked onto this variable to generate a list of directories to search.
4259 sitelibexp (sitelib.U):
4260 This variable is the ~name expanded version of sitelib, so that you
4261 may use it directly in Makefiles or shell scripts.
4263 siteman1dir (siteman1dir.U):
4264 This variable contains the name of the directory in which site-specific
4265 manual source pages are to be put. It is the responsibility of the
4266 Makefile.SH to get the value of this into the proper command.
4267 You must be prepared to do the ~name expansion yourself.
4268 The standard distribution will put nothing in this directory.
4269 After perl has been installed, users may install their own local
4270 man1 pages in this directory with
4271 MakeMaker Makefile.PL
4272 or equivalent. See INSTALL for details.
4274 siteman1direxp (siteman1dir.U):
4275 This variable is the same as the siteman1dir variable, but is filename
4276 expanded at configuration time, for convenient use in makefiles.
4278 siteman3dir (siteman3dir.U):
4279 This variable contains the name of the directory in which site-specific
4280 library man source pages are to be put. It is the responsibility of the
4281 Makefile.SH to get the value of this into the proper command.
4282 You must be prepared to do the ~name expansion yourself.
4283 The standard distribution will put nothing in this directory.
4284 After perl has been installed, users may install their own local
4285 man3 pages in this directory with
4286 MakeMaker Makefile.PL
4287 or equivalent. See INSTALL for details.
4289 siteman3direxp (siteman3dir.U):
4290 This variable is the same as the siteman3dir variable, but is filename
4291 expanded at configuration time, for convenient use in makefiles.
4293 siteprefix (siteprefix.U):
4294 This variable holds the full absolute path of the directory below
4295 which the user will install add-on packages.
4296 See INSTALL for usage and examples.
4298 siteprefixexp (siteprefix.U):
4299 This variable holds the full absolute path of the directory below
4300 which the user will install add-on packages. Derived from siteprefix.
4302 sitescript (sitescript.U):
4303 This variable holds the name of the directory in which the user wants
4304 to put add-on publicly executable files for the package in question. It
4305 is most often a local directory such as /usr/local/bin. Programs using
4306 this variable must be prepared to deal with ~name substitution.
4307 The standard distribution will put nothing in this directory.
4308 After perl has been installed, users may install their own local
4309 scripts in this directory with
4310 MakeMaker Makefile.PL
4311 or equivalent. See INSTALL for details.
4313 sitescriptexp (sitescript.U):
4314 This is the same as the sitescript variable, but is filename expanded at
4315 configuration time, for use in your makefiles.
4317 sizesize (sizesize.U):
4318 This variable contains the size of a sizetype in bytes.
4320 sizetype (sizetype.U):
4321 This variable defines sizetype to be something like size_t,
4322 unsigned long, or whatever type is used to declare length
4323 parameters for string functions.
4326 This variable is defined but not used by Configure.
4327 The value is a plain '' and is not useful.
4330 This variable is defined but not used by Configure.
4331 The value is a plain '' and is not useful.
4334 This variable holds the extension used to identify shared libraries
4335 (also known as shared objects) on the system. Usually set to 'so'.
4337 sockethdr (d_socket.U):
4338 This variable has any cpp '-I' flags needed for socket support.
4340 socketlib (d_socket.U):
4341 This variable has the names of any libraries needed for socket support.
4343 socksizetype (socksizetype.U):
4344 This variable holds the type used for the size argument
4345 for various socket calls like accept. Usual values include
4346 socklen_t, size_t, and int.
4349 This variable is used internally by Configure to determine the
4350 full pathname (if any) of the sort program. After Configure runs,
4351 the value is reset to a plain "sort" and is not useful.
4353 spackage (package.U):
4354 This variable contains the name of the package being constructed,
4355 with the first letter uppercased, i.e. suitable for starting
4358 spitshell (spitshell.U):
4359 This variable contains the command necessary to spit out a runnable
4360 shell on this system. It is either cat or a grep '-v' for # comments.
4362 sPRId64 (quadfio.U):
4363 This variable, if defined, contains the string used by stdio to
4364 format 64-bit decimal numbers (format 'd') for output.
4366 sPRIeldbl (longdblfio.U):
4367 This variable, if defined, contains the string used by stdio to
4368 format long doubles (format 'e') for output.
4370 sPRIEUldbl (longdblfio.U):
4371 This variable, if defined, contains the string used by stdio to
4372 format long doubles (format 'E') for output.
4373 The 'U' in the name is to separate this from sPRIeldbl so that even
4374 case-blind systems can see the difference.
4376 sPRIfldbl (longdblfio.U):
4377 This variable, if defined, contains the string used by stdio to
4378 format long doubles (format 'f') for output.
4380 sPRIFUldbl (longdblfio.U):
4381 This variable, if defined, contains the string used by stdio to
4382 format long doubles (format 'F') for output.
4383 The 'U' in the name is to separate this from sPRIfldbl so that even
4384 case-blind systems can see the difference.
4386 sPRIgldbl (longdblfio.U):
4387 This variable, if defined, contains the string used by stdio to
4388 format long doubles (format 'g') for output.
4390 sPRIGUldbl (longdblfio.U):
4391 This variable, if defined, contains the string used by stdio to
4392 format long doubles (format 'G') for output.
4393 The 'U' in the name is to separate this from sPRIgldbl so that even
4394 case-blind systems can see the difference.
4396 sPRIi64 (quadfio.U):
4397 This variable, if defined, contains the string used by stdio to
4398 format 64-bit decimal numbers (format 'i') for output.
4400 sPRIo64 (quadfio.U):
4401 This variable, if defined, contains the string used by stdio to
4402 format 64-bit octal numbers (format 'o') for output.
4404 sPRIu64 (quadfio.U):
4405 This variable, if defined, contains the string used by stdio to
4406 format 64-bit unsigned decimal numbers (format 'u') for output.
4408 sPRIx64 (quadfio.U):
4409 This variable, if defined, contains the string used by stdio to
4410 format 64-bit hexadecimal numbers (format 'x') for output.
4412 sPRIXU64 (quadfio.U):
4413 This variable, if defined, contains the string used by stdio to
4414 format 64-bit hExADECimAl numbers (format 'X') for output.
4415 The 'U' in the name is to separate this from sPRIx64 so that even
4416 case-blind systems can see the difference.
4418 srand48_r_proto (d_srand48_r.U):
4419 This variable encodes the prototype of srand48_r.
4420 It is zero if d_srand48_r is undef, and one of the
4421 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4424 srandom_r_proto (d_srandom_r.U):
4425 This variable encodes the prototype of srandom_r.
4426 It is zero if d_srandom_r is undef, and one of the
4427 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4431 This variable holds the path to the package source. It is up to
4432 the Makefile to use this variable and set VPATH accordingly to
4433 find the sources remotely.
4435 sSCNfldbl (longdblfio.U):
4436 This variable, if defined, contains the string used by stdio to
4437 format long doubles (format 'f') for input.
4439 ssizetype (ssizetype.U):
4440 This variable defines ssizetype to be something like ssize_t,
4441 long or int. It is used by functions that return a count
4442 of bytes or an error condition. It must be a signed type.
4443 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4445 startperl (startperl.U):
4446 This variable contains the string to put on the front of a perl
4447 script to make sure (hopefully) that it runs with perl and not some
4448 shell. Of course, that leading line must be followed by the classical
4450 eval 'exec perl -S $0 ${1+"$@"}'
4451 if $running_under_some_shell;
4452 to guarantee perl startup should the shell execute the script. Note
4453 that this magic incatation is not understood by csh.
4455 startsh (startsh.U):
4456 This variable contains the string to put on the front of a shell
4457 script to make sure (hopefully) that it runs with sh and not some
4460 static_ext (Extensions.U):
4461 This variable holds a list of XS extension files we want to
4462 link statically into the package. It is used by Makefile.
4464 stdchar (stdchar.U):
4465 This variable conditionally defines STDCHAR to be the type of char
4466 used in stdio.h. It has the values "unsigned char" or "char".
4468 stdio_base (d_stdstdio.U):
4469 This variable defines how, given a FILE pointer, fp, to access the
4470 _base field (or equivalent) of stdio.h's FILE structure. This will
4471 be used to define the macro FILE_base(fp).
4473 stdio_bufsiz (d_stdstdio.U):
4474 This variable defines how, given a FILE pointer, fp, to determine
4475 the number of bytes store in the I/O buffer pointer to by the
4476 _base field (or equivalent) of stdio.h's FILE structure. This will
4477 be used to define the macro FILE_bufsiz(fp).
4479 stdio_cnt (d_stdstdio.U):
4480 This variable defines how, given a FILE pointer, fp, to access the
4481 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4482 be used to define the macro FILE_cnt(fp).
4484 stdio_filbuf (d_stdstdio.U):
4485 This variable defines how, given a FILE pointer, fp, to tell
4486 stdio to refill its internal buffers (?). This will
4487 be used to define the macro FILE_filbuf(fp).
4489 stdio_ptr (d_stdstdio.U):
4490 This variable defines how, given a FILE pointer, fp, to access the
4491 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4492 be used to define the macro FILE_ptr(fp).
4494 stdio_stream_array (stdio_streams.U):
4495 This variable tells the name of the array holding the stdio streams.
4496 Usual values include _iob, __iob, and __sF.
4498 strerror_r_proto (d_strerror_r.U):
4499 This variable encodes the prototype of strerror_r.
4500 It is zero if d_strerror_r is undef, and one of the
4501 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4504 strings (i_string.U):
4505 This variable holds the full path of the string header that will be
4506 used. Typically /usr/include/string.h or /usr/include/strings.h.
4509 This variable is defined but not used by Configure.
4510 The value is a plain '' and is not useful.
4512 subversion (patchlevel.U):
4513 The subversion level of this package.
4514 The value of subversion comes from the patchlevel.h file.
4515 In a version number such as 5.6.1, this is the "1".
4516 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4517 This is unique to perl.
4520 This variable holds the place where the manual is located on this
4521 system. It is not the place where the user wants to put his manual
4522 pages. Rather it is the place where Configure may look to find manual
4523 for unix commands (section 1 of the manual usually). See mansrc.
4526 This variable is defined but not used by Configure.
4527 The value is a plain '' and is not useful.
4530 This variable is defined but not used by Configure.
4531 The value is a plain '' and is not useful.
4533 targetarch (Cross.U):
4534 If cross-compiling, this variable contains the target architecture.
4535 If not, this will be empty.
4538 This variable is defined but not used by Configure.
4539 The value is a plain '' and is not useful.
4542 This variable is defined but not used by Configure.
4543 The value is a plain '' and is not useful.
4546 This variable is used internally by Configure to determine the
4547 full pathname (if any) of the test program. After Configure runs,
4548 the value is reset to a plain "test" and is not useful.
4550 timeincl (i_time.U):
4551 This variable holds the full path of the included time header(s).
4553 timetype (d_time.U):
4554 This variable holds the type returned by time(). It can be long,
4555 or time_t on BSD sites (in which case <sys/types.h> should be
4556 included). Anyway, the type Time_t should be used.
4558 tmpnam_r_proto (d_tmpnam_r.U):
4559 This variable encodes the prototype of tmpnam_r.
4560 It is zero if d_tmpnam_r is undef, and one of the
4561 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4565 This variable contains the command used by Configure
4566 to copy to from the target host. Useful and available
4567 only during Perl build.
4568 The string ':' if not cross-compiling.
4571 This variable is used internally by Configure to determine the
4572 full pathname (if any) of the touch program. After Configure runs,
4573 the value is reset to a plain "touch" and is not useful.
4576 This variable is used internally by Configure to determine the
4577 full pathname (if any) of the tr program. After Configure runs,
4578 the value is reset to a plain "tr" and is not useful.
4581 This variable contains the value to be passed to the tr(1)
4582 command to transliterate a newline. Typical values are
4583 '\012' and '\n'. This is needed for EBCDIC systems where
4584 newline is not necessarily '\012'.
4587 This variable is defined but not used by Configure.
4588 The value is a plain '' and is not useful.
4590 ttyname_r_proto (d_ttyname_r.U):
4591 This variable encodes the prototype of ttyname_r.
4592 It is zero if d_ttyname_r is undef, and one of the
4593 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4597 This variable is the size of an U16 in bytes.
4600 This variable contains the C type used for Perl's U16.
4603 This variable is the size of an U32 in bytes.
4606 This variable contains the C type used for Perl's U32.
4609 This variable is the size of an U64 in bytes.
4612 This variable contains the C type used for Perl's U64.
4615 This variable is the size of an U8 in bytes.
4618 This variable contains the C type used for Perl's U8.
4621 This variable contains the format string used for printing a Uid_t.
4623 uidsign (uidsign.U):
4624 This variable contains the signedness of a uidtype.
4625 1 for unsigned, -1 for signed.
4627 uidsize (uidsize.U):
4628 This variable contains the size of a uidtype in bytes.
4630 uidtype (uidtype.U):
4631 This variable defines Uid_t to be something like uid_t, int,
4632 ushort, or whatever type is used to declare user ids in the kernel.
4635 This variable is used internally by Configure to determine the
4636 full pathname (if any) of the uname program. After Configure runs,
4637 the value is reset to a plain "uname" and is not useful.
4640 This variable is used internally by Configure to determine the
4641 full pathname (if any) of the uniq program. After Configure runs,
4642 the value is reset to a plain "uniq" and is not useful.
4644 uquadtype (quadtype.U):
4645 This variable defines Uquad_t to be something like unsigned long,
4646 unsigned int, unsigned long long, uint64_t, or whatever type is
4647 used for 64-bit integers.
4649 use5005threads (usethreads.U):
4650 This variable conditionally defines the USE_5005THREADS symbol,
4651 and indicates that Perl should be built to use the 5.005-based
4652 threading implementation.
4654 use64bitall (use64bits.U):
4655 This variable conditionally defines the USE_64_BIT_ALL symbol,
4656 and indicates that 64-bit integer types should be used
4657 when available. The maximal possible
4658 64-bitness is employed: LP64 or ILP64, meaning that you will
4659 be able to use more than 2 gigabytes of memory. This mode is
4660 even more binary incompatible than USE_64_BIT_INT. You may not
4661 be able to run the resulting executable in a 32-bit CPU at all or
4662 you may need at least to reboot your OS to 64-bit mode.
4664 use64bitint (use64bits.U):
4665 This variable conditionally defines the USE_64_BIT_INT symbol,
4666 and indicates that 64-bit integer types should be used
4667 when available. The minimal possible 64-bitness
4668 is employed, just enough to get 64-bit integers into Perl.
4669 This may mean using for example "long longs", while your memory
4670 may still be limited to 2 gigabytes.
4672 usecrosscompile (Cross.U):
4673 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4674 and indicates that Perl has been cross-compiled.
4677 This variable indicates if the system supports dynamic
4678 loading of some sort. See also dlsrc and dlobj.
4680 usefaststdio (usefaststdio.U):
4681 This variable conditionally defines the USE_FAST_STDIO symbol,
4682 and indicates that Perl should be built to use 'fast stdio'.
4683 Defaults to define in Perls 5.8 and earlier, to undef later.
4685 useithreads (usethreads.U):
4686 This variable conditionally defines the USE_ITHREADS symbol,
4687 and indicates that Perl should be built to use the interpreter-based
4688 threading implementation.
4690 uselargefiles (uselfs.U):
4691 This variable conditionally defines the USE_LARGE_FILES symbol,
4692 and indicates that large file interfaces should be used when
4695 uselongdouble (uselongdbl.U):
4696 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4697 and indicates that long doubles should be used when available.
4699 usemallocwrap (mallocsrc.U):
4700 This variable contains y if we are wrapping malloc to prevent
4701 integer overflow during size calculations.
4703 usemorebits (usemorebits.U):
4704 This variable conditionally defines the USE_MORE_BITS symbol,
4705 and indicates that explicit 64-bit interfaces and long doubles
4706 should be used when available.
4708 usemultiplicity (usemultiplicity.U):
4709 This variable conditionally defines the MULTIPLICITY symbol,
4710 and indicates that Perl should be built to use multiplicity.
4712 usemymalloc (mallocsrc.U):
4713 This variable contains y if the malloc that comes with this package
4714 is desired over the system's version of malloc. People often include
4715 special versions of malloc for effiency, but such versions are often
4716 less portable. See also mallocsrc and mallocobj.
4717 If this is 'y', then -lmalloc is removed from $libs.
4720 This variable contains 'true' or 'false' depending whether the
4721 nm extraction is wanted or not.
4723 useopcode (Extensions.U):
4724 This variable holds either 'true' or 'false' to indicate
4725 whether the Opcode extension should be used. The sole
4726 use for this currently is to allow an easy mechanism
4727 for users to skip the Opcode extension from the Configure
4730 useperlio (useperlio.U):
4731 This variable conditionally defines the USE_PERLIO symbol,
4732 and indicates that the PerlIO abstraction should be
4735 useposix (Extensions.U):
4736 This variable holds either 'true' or 'false' to indicate
4737 whether the POSIX extension should be used. The sole
4738 use for this currently is to allow an easy mechanism
4739 for hints files to indicate that POSIX will not compile
4740 on a particular system.
4742 usereentrant (usethreads.U):
4743 This variable conditionally defines the USE_REENTRANT_API symbol,
4744 which indicates that the thread code may try to use the various
4745 _r versions of library functions. This is only potentially
4746 meaningful if usethreads is set and is very experimental, it is
4747 not even prompted for.
4749 userelocatableinc (XXX.U):
4750 This variable is set to true to indicate that perl should relocate
4751 @INC entries at runtime based on the path to the perl binary.
4752 Any @INC paths starting ".../" are relocated relative to the directory
4753 containing the perl binary, and a logical cleanup of the path is then
4754 made around the join point (removing "dir/../" pairs)
4757 This variable is set to true when the user agrees to use sfio.
4758 It is set to false when sfio is not available or when the user
4759 explicitely requests not to use sfio. It is here primarily so
4760 that command-line settings can override the auto-detection of
4761 d_sfio without running into a "WHOA THERE".
4763 useshrplib (libperl.U):
4764 This variable is set to 'true' if the user wishes
4765 to build a shared libperl, and 'false' otherwise.
4767 usesocks (usesocks.U):
4768 This variable conditionally defines the USE_SOCKS symbol,
4769 and indicates that Perl should be built to use SOCKS.
4771 usethreads (usethreads.U):
4772 This variable conditionally defines the USE_THREADS symbol,
4773 and indicates that Perl should be built to use threads.
4775 usevendorprefix (vendorprefix.U):
4776 This variable tells whether the vendorprefix
4777 and consequently other vendor* paths are in use.
4779 usevfork (d_vfork.U):
4780 This variable is set to true when the user accepts to use vfork.
4781 It is set to false when no vfork is available or when the user
4782 explicitely requests not to use vfork.
4785 This variable holds the path of the include files, which is
4786 usually /usr/include. It is mainly used by other Configure units.
4789 This variable is defined but not used by Configure.
4790 The value is a plain '' and is not useful.
4792 uvoformat (perlxvf.U):
4793 This variable contains the format string used for printing
4794 a Perl UV as an unsigned octal integer.
4797 This variable is the size of a UV in bytes.
4800 This variable contains the C type used for Perl's UV.
4802 uvuformat (perlxvf.U):
4803 This variable contains the format string used for printing
4804 a Perl UV as an unsigned decimal integer.
4806 uvxformat (perlxvf.U):
4807 This variable contains the format string used for printing
4808 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4810 uvXUformat (perlxvf.U):
4811 This variable contains the format string used for printing
4812 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4814 vendorarch (vendorarch.U):
4815 This variable contains the value of the PERL_VENDORARCH symbol.
4816 It may have a ~ on the front.
4817 The standard distribution will put nothing in this directory.
4818 Vendors who distribute perl may wish to place their own
4819 architecture-dependent modules and extensions in this directory with
4820 MakeMaker Makefile.PL INSTALLDIRS=vendor
4821 or equivalent. See INSTALL for details.
4823 vendorarchexp (vendorarch.U):
4824 This variable is the ~name expanded version of vendorarch, so that you
4825 may use it directly in Makefiles or shell scripts.
4827 vendorbin (vendorbin.U):
4828 This variable contains the eventual value of the VENDORBIN symbol.
4829 It may have a ~ on the front.
4830 The standard distribution will put nothing in this directory.
4831 Vendors who distribute perl may wish to place additional
4832 binaries in this directory with
4833 MakeMaker Makefile.PL INSTALLDIRS=vendor
4834 or equivalent. See INSTALL for details.
4836 vendorbinexp (vendorbin.U):
4837 This variable is the ~name expanded version of vendorbin, so that you
4838 may use it directly in Makefiles or shell scripts.
4840 vendorhtml1dir (vendorhtml1dir.U):
4841 This variable contains the name of the directory for html
4842 pages. It may have a ~ on the front.
4843 The standard distribution will put nothing in this directory.
4844 Vendors who distribute perl may wish to place their own
4845 html pages in this directory with
4846 MakeMaker Makefile.PL INSTALLDIRS=vendor
4847 or equivalent. See INSTALL for details.
4849 vendorhtml1direxp (vendorhtml1dir.U):
4850 This variable is the ~name expanded version of vendorhtml1dir, so that you
4851 may use it directly in Makefiles or shell scripts.
4853 vendorhtml3dir (vendorhtml3dir.U):
4854 This variable contains the name of the directory for html
4855 library pages. It may have a ~ on the front.
4856 The standard distribution will put nothing in this directory.
4857 Vendors who distribute perl may wish to place their own
4858 html pages for modules and extensions in this directory with
4859 MakeMaker Makefile.PL INSTALLDIRS=vendor
4860 or equivalent. See INSTALL for details.
4862 vendorhtml3direxp (vendorhtml3dir.U):
4863 This variable is the ~name expanded version of vendorhtml3dir, so that you
4864 may use it directly in Makefiles or shell scripts.
4866 vendorlib (vendorlib.U):
4867 This variable contains the eventual value of the VENDORLIB symbol,
4868 which is the name of the private library for this package.
4869 The standard distribution will put nothing in this directory.
4870 Vendors who distribute perl may wish to place their own
4871 modules in this directory with
4872 MakeMaker Makefile.PL INSTALLDIRS=vendor
4873 or equivalent. See INSTALL for details.
4875 vendorlib_stem (vendorlib.U):
4876 This variable is $vendorlibexp with any trailing version-specific component
4877 removed. The elements in inc_version_list (inc_version_list.U) can
4878 be tacked onto this variable to generate a list of directories to search.
4880 vendorlibexp (vendorlib.U):
4881 This variable is the ~name expanded version of vendorlib, so that you
4882 may use it directly in Makefiles or shell scripts.
4884 vendorman1dir (vendorman1dir.U):
4885 This variable contains the name of the directory for man1
4886 pages. It may have a ~ on the front.
4887 The standard distribution will put nothing in this directory.
4888 Vendors who distribute perl may wish to place their own
4889 man1 pages in this directory with
4890 MakeMaker Makefile.PL INSTALLDIRS=vendor
4891 or equivalent. See INSTALL for details.
4893 vendorman1direxp (vendorman1dir.U):
4894 This variable is the ~name expanded version of vendorman1dir, so that you
4895 may use it directly in Makefiles or shell scripts.
4897 vendorman3dir (vendorman3dir.U):
4898 This variable contains the name of the directory for man3
4899 pages. It may have a ~ on the front.
4900 The standard distribution will put nothing in this directory.
4901 Vendors who distribute perl may wish to place their own
4902 man3 pages in this directory with
4903 MakeMaker Makefile.PL INSTALLDIRS=vendor
4904 or equivalent. See INSTALL for details.
4906 vendorman3direxp (vendorman3dir.U):
4907 This variable is the ~name expanded version of vendorman3dir, so that you
4908 may use it directly in Makefiles or shell scripts.
4910 vendorprefix (vendorprefix.U):
4911 This variable holds the full absolute path of the directory below
4912 which the vendor will install add-on packages.
4913 See INSTALL for usage and examples.
4915 vendorprefixexp (vendorprefix.U):
4916 This variable holds the full absolute path of the directory below
4917 which the vendor will install add-on packages. Derived from vendorprefix.
4919 vendorscript (vendorscript.U):
4920 This variable contains the eventual value of the VENDORSCRIPT symbol.
4921 It may have a ~ on the front.
4922 The standard distribution will put nothing in this directory.
4923 Vendors who distribute perl may wish to place additional
4924 executable scripts in this directory with
4925 MakeMaker Makefile.PL INSTALLDIRS=vendor
4926 or equivalent. See INSTALL for details.
4928 vendorscriptexp (vendorscript.U):
4929 This variable is the ~name expanded version of vendorscript, so that you
4930 may use it directly in Makefiles or shell scripts.
4932 version (patchlevel.U):
4933 The full version number of this package, such as 5.6.1 (or 5_6_1).
4934 This combines revision, patchlevel, and subversion to get the
4935 full version number, including any possible subversions.
4936 This is suitable for use as a directory name, and hence is
4937 filesystem dependent.
4939 version_patchlevel_string (patchlevel.U):
4940 This is a string combining version, subversion and
4941 perl_patchlevel (if perl_patchlevel is non-zero).
4942 It is typically something like
4943 'version 7 subversion 1' or
4944 'version 7 subversion 1 patchlevel 11224'
4945 It is computed here to avoid duplication of code in myconfig.SH
4948 versiononly (versiononly.U):
4949 If set, this symbol indicates that only the version-specific
4950 components of a perl installation should be installed.
4951 This may be useful for making a test installation of a new
4952 version without disturbing the existing installation.
4953 Setting versiononly is equivalent to setting installperl's -v option.
4954 In particular, the non-versioned scripts and programs such as
4955 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
4956 (see INSTALL for a more complete list). Nor are the man
4958 Usually, this is undef.
4961 This variable is defined but not used by Configure.
4962 The value is a plain '' and is not useful.
4964 voidflags (voidflags.U):
4965 This variable contains the eventual value of the VOIDFLAGS symbol,
4966 which indicates how much support of the void type is given by this
4967 compiler. See VOIDFLAGS for more info.
4970 This variable holds extra path (space-separated) used to find
4971 libraries on this platform, for example CPU-specific libraries
4972 (on multi-CPU platforms) may be listed here.
4975 This variable holds the name of the compiler compiler we
4976 want to use in the Makefile. It can be yacc, byacc, or bison -y.
4979 This variable contains any additional yacc flags desired by the
4980 user. It is up to the Makefile to use this.
4983 This variable is defined but not used by Configure.
4984 The value is a plain '' and is not useful.
4987 This variable is used internally by Configure to determine the
4988 full pathname (if any) of the zip program. After Configure runs,
4989 the value is reset to a plain "zip" and is not useful.