2 !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
3 This file is built by metaconfig.
5 This file contains a description of all the shell variables whose value is
6 determined by the Configure script. Variables intended for use in C
7 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
8 generates pod documentation for Config.pm from this file--please try to keep
9 the formatting regular.]
12 This variable defines the extension used for ordinary library files.
13 For unix, it is '.a'. The '.' is included. Other possible
14 values include '.lib'.
17 This variable defines the extension used for executable files.
18 DJGPP, Cygwin and OS/2 use '.exe'. Stratus VOS uses '.pm'.
19 On operating systems which do not require a specific extension
20 for executable files, this variable is empty.
23 This variable defines the extension used for object files.
24 For unix, it is '.o'. The '.' is included. Other possible
25 values include '.obj'.
28 This variable is set to 'true' if AFS (Andrew File System) is used
29 on the system, 'false' otherwise. It is possible to override this
30 with a hint value or command line option, but you'd better know
34 This variable is by default set to '/afs'. In the unlikely case
35 this is not the correct root, it is possible to override this with
36 a hint value or command line option. This will be used in subsequent
37 tests for AFSness in the Perl configure and test process.
39 alignbytes (alignbytes.U):
40 This variable holds the number of bytes required to align a
41 double-- or a long double when applicable. Usual values are
42 2, 4 and 8. The default is eight, for safety.
44 ansi2knr (ansi2knr.U):
45 This variable is set if the user needs to run ansi2knr.
46 Currently, this is not supported, so we just abort.
48 aphostname (d_gethname.U):
49 This variable contains the command which can be used to compute the
50 host name. The command is fully qualified by its absolute path, to make
51 it safe when used by a process with super-user privileges.
53 api_revision (patchlevel.U):
54 The three variables, api_revision, api_version, and
55 api_subversion, specify the version of the oldest perl binary
56 compatible with the present perl. In a full version string
57 such as '5.6.1', api_revision is the '5'.
58 Prior to 5.5.640, the format was a floating point number,
61 perl.c:incpush() and lib/lib.pm will automatically search in
62 $sitelib/.. for older directories back to the limit specified
63 by these api_ variables. This is only useful if you have a
64 perl library directory tree structured like the default one.
65 See INSTALL for how this works. The versioned site_perl
66 directory was introduced in 5.005, so that is the lowest
67 possible value. The version list appropriate for the current
68 system is determined in inc_version_list.U.
70 XXX To do: Since compatibility can depend on compile time
71 options (such as bincompat, longlong, etc.) it should
72 (perhaps) be set by Configure, but currently it isn't.
73 Currently, we read a hard-wired value from patchlevel.h.
74 Perhaps what we ought to do is take the hard-wired value from
75 patchlevel.h but then modify it if the current Configure
76 options warrant. patchlevel.h then would use an #ifdef guard.
78 api_subversion (patchlevel.U):
79 The three variables, api_revision, api_version, and
80 api_subversion, specify the version of the oldest perl binary
81 compatible with the present perl. In a full version string
82 such as '5.6.1', api_subversion is the '1'. See api_revision for
85 api_version (patchlevel.U):
86 The three variables, api_revision, api_version, and
87 api_subversion, specify the version of the oldest perl binary
88 compatible with the present perl. In a full version string
89 such as '5.6.1', api_version is the '6'. See api_revision for
90 full details. As a special case, 5.5.0 is rendered in the
91 old-style as 5.005. (In the 5.005_0x maintenance series,
92 this was the only versioned directory in $sitelib.)
94 api_versionstring (patchlevel.U):
95 This variable combines api_revision, api_version, and
96 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
97 for use as a directory name. This is filesystem dependent.
100 This variable is used internally by Configure to determine the
101 full pathname (if any) of the ar program. After Configure runs,
102 the value is reset to a plain "ar" and is not useful.
105 This variable holds the name of the directory in which the user wants
106 to put architecture-dependent public library files for $package.
107 It is most often a local directory such as /usr/local/lib.
108 Programs using this variable must be prepared to deal
109 with filename expansion.
111 archlibexp (archlib.U):
112 This variable is the same as the archlib variable, but is
113 filename expanded at configuration time, for convenient use.
115 archname (archname.U):
116 This variable is a short name to characterize the current
117 architecture. It is used mainly to construct the default archlib.
119 archname64 (use64bits.U):
120 This variable is used for the 64-bitness part of $archname.
123 This variable defines any additional objects that must be linked
124 in with the program on this architecture. On unix, it is usually
125 empty. It is typically used to include emulations of unix calls
126 or other facilities. For perl on OS/2, for example, this would
129 asctime_r_proto (d_asctime_r.U):
130 This variable encodes the prototype of asctime_r.
131 It is zero if d_asctime_r is undef, and one of the
132 REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
136 This variable is used internally by Configure to determine the
137 full pathname (if any) of the awk program. After Configure runs,
138 the value is reset to a plain "awk" and is not useful.
141 The base revision level of this package, from the .package file.
144 This variable is defined but not used by Configure.
145 The value is a plain '' and is not useful.
148 This variable holds the name of the directory in which the user wants
149 to put publicly executable images for the package in question. It
150 is most often a local directory such as /usr/local/bin. Programs using
151 this variable must be prepared to deal with ~name substitution.
154 This is the same as the bin variable, but is filename expanded at
155 configuration time, for use in your makefiles.
158 This variable is used internally by Configure to determine the
159 full pathname (if any) of the bison program. After Configure runs,
160 the value is reset to a plain "bison" and is not useful.
163 This variable is used internally by Configure to determine the
164 full pathname (if any) of the byacc program. After Configure runs,
165 the value is reset to a plain "byacc" and is not useful.
167 byteorder (byteorder.U):
168 This variable holds the byte order in a UV. In the following,
169 larger digits indicate more significance. The variable byteorder
170 is either 4321 on a big-endian machine, or 1234 on a little-endian,
171 or 87654321 on a Cray ... or 3412 with weird order !
174 This variable contains the \c string if that is what causes the echo
175 command to suppress newline. Otherwise it is null. Correct usage is
176 $echo $n "prompt for a question: $c".
178 castflags (d_castneg.U):
179 This variable contains a flag that precise difficulties the
180 compiler has casting odd floating values to unsigned long:
182 1 = couldn't cast < 0
183 2 = couldn't cast >= 0x80000000
184 4 = couldn't cast in argument expression list
187 This variable is used internally by Configure to determine the
188 full pathname (if any) of the cat program. After Configure runs,
189 the value is reset to a plain "cat" and is not useful.
192 This variable holds the name of a command to execute a C compiler which
193 can resolve multiple global references that happen to have the same
194 name. Usual values are 'cc' and 'gcc'.
195 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
197 cccdlflags (dlsrc.U):
198 This variable contains any special flags that might need to be
199 passed with 'cc -c' to compile modules to be used to create a shared
200 library that will be used for dynamic loading. For hpux, this
201 should be +z. It is up to the makefile to use it.
204 This variable contains any special flags that might need to be
205 passed to cc to link with a shared library for dynamic loading.
206 It is up to the makefile to use it. For sunos 4.1, it should
210 This variable contains any additional C compiler flags desired by
211 the user. It is up to the Makefile to use this.
213 ccflags_uselargefiles (uselfs.U):
214 This variable contains the compiler flags needed by large file builds
215 and added to ccflags by hints files.
218 This can set either by hints files or by Configure. If using
219 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
220 Some platforms, however, make good use of this by storing the
221 flavor of the C compiler being used here. For example if using
222 the Sun WorkShop suite, ccname will be 'workshop'.
224 ccsymbols (Cppsym.U):
225 The variable contains the symbols defined by the C compiler alone.
226 The symbols defined by cpp or by cc when it calls cpp are not in
227 this list, see cppsymbols and cppccsymbols.
228 The list is a space-separated list of symbol=value tokens.
230 ccversion (Checkcc.U):
231 This can set either by hints files or by Configure. If using
232 a (non-gcc) vendor cc, this variable may contain a version for
236 Login name of the person who ran the Configure script and answered the
237 questions. This is used to tag both config.sh and config_h.SH.
239 cf_email (cf_email.U):
240 Electronic mail address of the person who ran Configure. This can be
241 used by units that require the user's e-mail, like MailList.U.
244 Holds the output of the "date" command when the configuration file was
245 produced. This is used to tag both config.sh and config_h.SH.
247 charsize (charsize.U):
248 This variable contains the value of the CHARSIZE symbol, which
249 indicates to the C program how many bytes there are in a character.
252 This variable is defined but not used by Configure.
253 The value is a plain '' and is not useful.
256 This variable is used internally by Configure to determine the
257 full pathname (if any) of the chmod program. After Configure runs,
258 the value is reset to a plain "chmod" and is not useful.
261 This variable is defined but not used by Configure.
262 The value is a plain '' and is not useful.
264 clocktype (d_times.U):
265 This variable holds the type returned by times(). It can be long,
266 or clock_t on BSD sites (in which case <sys/types.h> should be
270 This variable is used internally by Configure to determine the
271 full pathname (if any) of the comm program. After Configure runs,
272 the value is reset to a plain "comm" and is not useful.
275 This variable is defined but not used by Configure.
276 The value is a plain '' and is not useful.
278 contains (contains.U):
279 This variable holds the command to do a grep with a proper return
280 status. On most sane systems it is simply "grep". On insane systems
281 it is a grep followed by a cat followed by a test. This variable
282 is primarily for the use of other Configure units.
285 This variable is used internally by Configure to determine the
286 full pathname (if any) of the cp program. After Configure runs,
287 the value is reset to a plain "cp" and is not useful.
290 This variable is defined but not used by Configure.
291 The value is a plain '' and is not useful.
294 This variable is used internally by Configure to determine the
295 full pathname (if any) of the cpp program. After Configure runs,
296 the value is reset to a plain "cpp" and is not useful.
298 cpp_stuff (cpp_stuff.U):
299 This variable contains an identification of the concatenation mechanism
300 used by the C preprocessor.
302 cppccsymbols (Cppsym.U):
303 The variable contains the symbols defined by the C compiler
304 when it calls cpp. The symbols defined by the cc alone or cpp
305 alone are not in this list, see ccsymbols and cppsymbols.
306 The list is a space-separated list of symbol=value tokens.
308 cppflags (ccflags.U):
309 This variable holds the flags that will be passed to the C pre-
310 processor. It is up to the Makefile to use it.
312 cpplast (cppstdin.U):
313 This variable has the same functionality as cppminus, only it applies
314 to cpprun and not cppstdin.
316 cppminus (cppstdin.U):
317 This variable contains the second part of the string which will invoke
318 the C preprocessor on the standard input and produce to standard
319 output. This variable will have the value "-" if cppstdin needs
320 a minus to specify standard input, otherwise the value is "".
323 This variable contains the command which will invoke a C preprocessor
324 on standard input and put the output to stdout. It is guaranteed not
325 to be a wrapper and may be a null string if no preprocessor can be
326 made directly available. This preprocessor might be different from the
327 one used by the C compiler. Don't forget to append cpplast after the
328 preprocessor options.
330 cppstdin (cppstdin.U):
331 This variable contains the command which will invoke the C
332 preprocessor on standard input and put the output to stdout.
333 It is primarily used by other Configure units that ask about
334 preprocessor symbols.
336 cppsymbols (Cppsym.U):
337 The variable contains the symbols defined by the C preprocessor
338 alone. The symbols defined by cc or by cc when it calls cpp are
339 not in this list, see ccsymbols and cppccsymbols.
340 The list is a space-separated list of symbol=value tokens.
342 crypt_r_proto (d_crypt_r.U):
343 This variable encodes the prototype of crypt_r.
344 It is zero if d_crypt_r is undef, and one of the
345 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
348 cryptlib (d_crypt.U):
349 This variable holds -lcrypt or the path to a libcrypt.a archive if
350 the crypt() function is not defined in the standard C library. It is
351 up to the Makefile to use this.
354 This variable is used internally by Configure to determine the
355 full pathname (if any) of the csh program. After Configure runs,
356 the value is reset to a plain "csh" and is not useful.
358 ctermid_r_proto (d_ctermid_r.U):
359 This variable encodes the prototype of ctermid_r.
360 It is zero if d_ctermid_r is undef, and one of the
361 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
364 ctime_r_proto (d_ctime_r.U):
365 This variable encodes the prototype of ctime_r.
366 It is zero if d_ctime_r is undef, and one of the
367 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
370 d__fwalk (d__fwalk.U):
371 This variable conditionally defines HAS__FWALK if _fwalk() is
372 available to apply a function to all the file handles.
374 d_access (d_access.U):
375 This variable conditionally defines HAS_ACCESS if the access() system
376 call is available to check for access permissions using real IDs.
378 d_accessx (d_accessx.U):
379 This variable conditionally defines the HAS_ACCESSX symbol, which
380 indicates to the C program that the accessx() routine is available.
383 This variable conditionally defines the HAS_AINTL symbol, which
384 indicates to the C program that the aintl() routine is available.
385 If copysignl is also present we can emulate modfl.
388 This variable conditionally defines the HAS_ALARM symbol, which
389 indicates to the C program that the alarm() routine is available.
391 d_archlib (archlib.U):
392 This variable conditionally defines ARCHLIB to hold the pathname
393 of architecture-dependent library files for $package. If
394 $archlib is the same as $privlib, then this is set to undef.
396 d_asctime_r (d_asctime_r.U):
397 This variable conditionally defines the HAS_ASCTIME_R symbol,
398 which indicates to the C program that the asctime_r()
399 routine is available.
402 This variable conditionally defines the HAS_ATOLF symbol, which
403 indicates to the C program that the atolf() routine is available.
406 This variable conditionally defines the HAS_ATOLL symbol, which
407 indicates to the C program that the atoll() routine is available.
409 d_attribute_format (d_attribut.U):
410 This variable conditionally defines HASATTRIBUTE_FORMAT, which
411 indicates the C compiler can check for printf-like formats.
413 d_attribute_malloc (d_attribut.U):
414 This variable conditionally defines HASATTRIBUTE_MALLOC, which
415 indicates the C compiler can understand functions as having
416 malloc-like semantics.
418 d_attribute_nonnull (d_attribut.U):
419 This variable conditionally defines HASATTRIBUTE_NONNULL, which
420 indicates that the C compiler can know that certain arguments
421 must not be NULL, and will check accordingly at compile time.
423 d_attribute_noreturn (d_attribut.U):
424 This variable conditionally defines HASATTRIBUTE_NORETURN, which
425 indicates that the C compiler can know that certain functions
426 are guaranteed never to return.
428 d_attribute_pure (d_attribut.U):
429 This variable conditionally defines HASATTRIBUTE_PURE, which
430 indicates that the C compiler can know that certain functions
431 are "pure" functions, meaning that they have no side effects, and
432 only rely on function input and/or global data for their results.
434 d_attribute_unused (d_attribut.U):
435 This variable conditionally defines HASATTRIBUTE_UNUSED, which
436 indicates that the C compiler can know that certain variables
437 and arguments may not always be used, and to not throw warnings
438 if they don't get used.
440 d_attribute_warn_unused_result (d_attribut.U):
441 This variable conditionally defines
442 HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
443 compiler can know that certain functions have a return values
444 that must not be ignored, such as malloc() or open().
447 This variable conditionally defines the HAS_BCMP symbol if
448 the bcmp() routine is available to compare strings.
451 This variable conditionally defines the HAS_BCOPY symbol if
452 the bcopy() routine is available to copy strings.
455 This symbol conditionally defines the symbol BSD when running on a
458 d_bsdgetpgrp (d_getpgrp.U):
459 This variable conditionally defines USE_BSD_GETPGRP if
460 getpgrp needs one arguments whereas USG one needs none.
462 d_bsdsetpgrp (d_setpgrp.U):
463 This variable conditionally defines USE_BSD_SETPGRP if
464 setpgrp needs two arguments whereas USG one needs none.
465 See also d_setpgid for a POSIX interface.
467 d_builtin_choose_expr (d_builtin.U):
468 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
469 indicates that the compiler supports __builtin_choose_expr(x,y,z).
470 This built-in function is analogous to the "x?y:z" operator in C,
471 except that the expression returned has its type unaltered by
472 promotion rules. Also, the built-in function does not evaluate
473 the expression that was not chosen.
475 d_builtin_expect (d_builtin.U):
476 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
477 that the compiler supports __builtin_expect(exp,c). You may use
478 __builtin_expect to provide the compiler with branch prediction
482 This variable conditionally defines the HAS_BZERO symbol if
483 the bzero() routine is available to set memory to 0.
485 d_c99_variadic_macros (d_c99_variadic.U):
486 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
487 symbol, which indicates to the C program that C99 variadic macros
490 d_casti32 (d_casti32.U):
491 This variable conditionally defines CASTI32, which indicates
492 whether the C compiler can cast large floats to 32-bit ints.
494 d_castneg (d_castneg.U):
495 This variable conditionally defines CASTNEG, which indicates
496 wether the C compiler can cast negative float to unsigned.
498 d_charvspr (d_vprintf.U):
499 This variable conditionally defines CHARVSPRINTF if this system
500 has vsprintf returning type (char*). The trend seems to be to
501 declare it as "int vsprintf()".
504 This variable conditionally defines the HAS_CHOWN symbol, which
505 indicates to the C program that the chown() routine is available.
507 d_chroot (d_chroot.U):
508 This variable conditionally defines the HAS_CHROOT symbol, which
509 indicates to the C program that the chroot() routine is available.
511 d_chsize (d_chsize.U):
512 This variable conditionally defines the CHSIZE symbol, which
513 indicates to the C program that the chsize() routine is available
514 to truncate files. You might need a -lx to get this routine.
517 This variable conditionally defines the HAS_CLASS symbol, which
518 indicates to the C program that the class() routine is available.
520 d_clearenv (d_clearenv.U):
521 This variable conditionally defines the HAS_CLEARENV symbol, which
522 indicates to the C program that the clearenv () routine is available.
524 d_closedir (d_closedir.U):
525 This variable conditionally defines HAS_CLOSEDIR if closedir() is
528 d_cmsghdr_s (d_cmsghdr_s.U):
529 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
530 which indicates that the struct cmsghdr is supported.
533 This variable conditionally defines the HASCONST symbol, which
534 indicates to the C program that this C compiler knows about the
537 d_copysignl (d_copysignl.U):
538 This variable conditionally defines the HAS_COPYSIGNL symbol, which
539 indicates to the C program that the copysignl() routine is available.
540 If aintl is also present we can emulate modfl.
542 d_cplusplus (d_cplusplus.U):
543 This variable conditionally defines the USE_CPLUSPLUS symbol, which
544 indicates that a C++ compiler was used to compiled Perl and will be
545 used to compile extensions.
548 This variable conditionally defines the CRYPT symbol, which
549 indicates to the C program that the crypt() routine is available
550 to encrypt passwords and the like.
552 d_crypt_r (d_crypt_r.U):
553 This variable conditionally defines the HAS_CRYPT_R symbol,
554 which indicates to the C program that the crypt_r()
555 routine is available.
558 This variable conditionally defines the CSH symbol, which
559 indicates to the C program that the C-shell exists.
561 d_ctermid_r (d_ctermid_r.U):
562 This variable conditionally defines the HAS_CTERMID_R symbol,
563 which indicates to the C program that the ctermid_r()
564 routine is available.
566 d_ctime_r (d_ctime_r.U):
567 This variable conditionally defines the HAS_CTIME_R symbol,
568 which indicates to the C program that the ctime_r()
569 routine is available.
571 d_cuserid (d_cuserid.U):
572 This variable conditionally defines the HAS_CUSERID symbol, which
573 indicates to the C program that the cuserid() routine is available
574 to get character login names.
576 d_dbl_dig (d_dbl_dig.U):
577 This variable conditionally defines d_dbl_dig if this system's
578 header files provide DBL_DIG, which is the number of significant
579 digits in a double precision number.
581 d_dbminitproto (d_dbminitproto.U):
582 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
583 which indicates to the C program that the system provides
584 a prototype for the dbminit() function. Otherwise, it is
585 up to the program to supply one.
587 d_difftime (d_difftime.U):
588 This variable conditionally defines the HAS_DIFFTIME symbol, which
589 indicates to the C program that the difftime() routine is available.
592 This variable conditionally defines the HAS_DIRFD constant,
593 which indicates to the C program that dirfd() is available
594 to return the file descriptor of a directory stream.
596 d_dirnamlen (i_dirent.U):
597 This variable conditionally defines DIRNAMLEN, which indicates
598 to the C program that the length of directory entry names is
599 provided by a d_namelen field.
601 d_dlerror (d_dlerror.U):
602 This variable conditionally defines the HAS_DLERROR symbol, which
603 indicates to the C program that the dlerror() routine is available.
605 d_dlopen (d_dlopen.U):
606 This variable conditionally defines the HAS_DLOPEN symbol, which
607 indicates to the C program that the dlopen() routine is available.
609 d_dlsymun (d_dlsymun.U):
610 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
611 indicates that we need to prepend an underscore to the symbol
612 name before calling dlsym().
614 d_dosuid (d_dosuid.U):
615 This variable conditionally defines the symbol DOSUID, which
616 tells the C program that it should insert setuid emulation code
617 on hosts which have setuid #! scripts disabled.
619 d_drand48_r (d_drand48_r.U):
620 This variable conditionally defines the HAS_DRAND48_R symbol,
621 which indicates to the C program that the drand48_r()
622 routine is available.
624 d_drand48proto (d_drand48proto.U):
625 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
626 which indicates to the C program that the system provides
627 a prototype for the drand48() function. Otherwise, it is
628 up to the program to supply one.
631 This variable conditionally defines HAS_DUP2 if dup2() is
632 available to duplicate file descriptors.
634 d_eaccess (d_eaccess.U):
635 This variable conditionally defines the HAS_EACCESS symbol, which
636 indicates to the C program that the eaccess() routine is available.
638 d_endgrent (d_endgrent.U):
639 This variable conditionally defines the HAS_ENDGRENT symbol, which
640 indicates to the C program that the endgrent() routine is available
641 for sequential access of the group database.
643 d_endgrent_r (d_endgrent_r.U):
644 This variable conditionally defines the HAS_ENDGRENT_R symbol,
645 which indicates to the C program that the endgrent_r()
646 routine is available.
648 d_endhent (d_endhent.U):
649 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
650 available to close whatever was being used for host queries.
652 d_endhostent_r (d_endhostent_r.U):
653 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
654 which indicates to the C program that the endhostent_r()
655 routine is available.
657 d_endnent (d_endnent.U):
658 This variable conditionally defines HAS_ENDNETENT if endnetent() is
659 available to close whatever was being used for network queries.
661 d_endnetent_r (d_endnetent_r.U):
662 This variable conditionally defines the HAS_ENDNETENT_R symbol,
663 which indicates to the C program that the endnetent_r()
664 routine is available.
666 d_endpent (d_endpent.U):
667 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
668 available to close whatever was being used for protocol queries.
670 d_endprotoent_r (d_endprotoent_r.U):
671 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
672 which indicates to the C program that the endprotoent_r()
673 routine is available.
675 d_endpwent (d_endpwent.U):
676 This variable conditionally defines the HAS_ENDPWENT symbol, which
677 indicates to the C program that the endpwent() routine is available
678 for sequential access of the passwd database.
680 d_endpwent_r (d_endpwent_r.U):
681 This variable conditionally defines the HAS_ENDPWENT_R symbol,
682 which indicates to the C program that the endpwent_r()
683 routine is available.
685 d_endsent (d_endsent.U):
686 This variable conditionally defines HAS_ENDSERVENT if endservent() is
687 available to close whatever was being used for service queries.
689 d_endservent_r (d_endservent_r.U):
690 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
691 which indicates to the C program that the endservent_r()
692 routine is available.
694 d_eofnblk (nblock_io.U):
695 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
696 when reading from a non-blocking I/O source.
699 This variable conditionally defines the symbols EUNICE and VAX, which
700 alerts the C program that it must deal with ideosyncracies of VMS.
702 d_faststdio (d_faststdio.U):
703 This variable conditionally defines the HAS_FAST_STDIO symbol,
704 which indicates to the C program that the "fast stdio" is available
705 to manipulate the stdio buffers directly.
707 d_fchdir (d_fchdir.U):
708 This variable conditionally defines the HAS_FCHDIR symbol, which
709 indicates to the C program that the fchdir() routine is available.
711 d_fchmod (d_fchmod.U):
712 This variable conditionally defines the HAS_FCHMOD symbol, which
713 indicates to the C program that the fchmod() routine is available
714 to change mode of opened files.
716 d_fchown (d_fchown.U):
717 This variable conditionally defines the HAS_FCHOWN symbol, which
718 indicates to the C program that the fchown() routine is available
719 to change ownership of opened files.
722 This variable conditionally defines the HAS_FCNTL symbol, and indicates
723 whether the fcntl() function exists
725 d_fcntl_can_lock (d_fcntl_can_lock.U):
726 This variable conditionally defines the FCNTL_CAN_LOCK symbol
727 and indicates whether file locking with fcntl() works.
729 d_fd_macros (d_fd_set.U):
730 This variable contains the eventual value of the HAS_FD_MACROS symbol,
731 which indicates if your C compiler knows about the macros which
732 manipulate an fd_set.
734 d_fd_set (d_fd_set.U):
735 This variable contains the eventual value of the HAS_FD_SET symbol,
736 which indicates if your C compiler knows about the fd_set typedef.
738 d_fds_bits (d_fd_set.U):
739 This variable contains the eventual value of the HAS_FDS_BITS symbol,
740 which indicates if your fd_set typedef contains the fds_bits member.
741 If you have an fd_set typedef, but the dweebs who installed it did
742 a half-fast job and neglected to provide the macros to manipulate
743 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
745 d_fgetpos (d_fgetpos.U):
746 This variable conditionally defines HAS_FGETPOS if fgetpos() is
747 available to get the file position indicator.
749 d_finite (d_finite.U):
750 This variable conditionally defines the HAS_FINITE symbol, which
751 indicates to the C program that the finite() routine is available.
753 d_finitel (d_finitel.U):
754 This variable conditionally defines the HAS_FINITEL symbol, which
755 indicates to the C program that the finitel() routine is available.
757 d_flexfnam (d_flexfnam.U):
758 This variable conditionally defines the FLEXFILENAMES symbol, which
759 indicates that the system supports filenames longer than 14 characters.
762 This variable conditionally defines HAS_FLOCK if flock() is
763 available to do file locking.
765 d_flockproto (d_flockproto.U):
766 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
767 which indicates to the C program that the system provides
768 a prototype for the flock() function. Otherwise, it is
769 up to the program to supply one.
772 This variable conditionally defines the HAS_FORK symbol, which
773 indicates to the C program that the fork() routine is available.
775 d_fp_class (d_fp_class.U):
776 This variable conditionally defines the HAS_FP_CLASS symbol, which
777 indicates to the C program that the fp_class() routine is available.
779 d_fpathconf (d_pathconf.U):
780 This variable conditionally defines the HAS_FPATHCONF symbol, which
781 indicates to the C program that the pathconf() routine is available
782 to determine file-system related limits and options associated
783 with a given open file descriptor.
785 d_fpclass (d_fpclass.U):
786 This variable conditionally defines the HAS_FPCLASS symbol, which
787 indicates to the C program that the fpclass() routine is available.
789 d_fpclassify (d_fpclassify.U):
790 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
791 indicates to the C program that the fpclassify() routine is available.
793 d_fpclassl (d_fpclassl.U):
794 This variable conditionally defines the HAS_FPCLASSL symbol, which
795 indicates to the C program that the fpclassl() routine is available.
797 d_fpos64_t (d_fpos64_t.U):
798 This symbol will be defined if the C compiler supports fpos64_t.
800 d_frexpl (d_frexpl.U):
801 This variable conditionally defines the HAS_FREXPL symbol, which
802 indicates to the C program that the frexpl() routine is available.
804 d_fs_data_s (d_fs_data_s.U):
805 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
806 which indicates that the struct fs_data is supported.
808 d_fseeko (d_fseeko.U):
809 This variable conditionally defines the HAS_FSEEKO symbol, which
810 indicates to the C program that the fseeko() routine is available.
812 d_fsetpos (d_fsetpos.U):
813 This variable conditionally defines HAS_FSETPOS if fsetpos() is
814 available to set the file position indicator.
816 d_fstatfs (d_fstatfs.U):
817 This variable conditionally defines the HAS_FSTATFS symbol, which
818 indicates to the C program that the fstatfs() routine is available.
820 d_fstatvfs (d_statvfs.U):
821 This variable conditionally defines the HAS_FSTATVFS symbol, which
822 indicates to the C program that the fstatvfs() routine is available.
825 This variable conditionally defines the HAS_FSYNC symbol, which
826 indicates to the C program that the fsync() routine is available.
828 d_ftello (d_ftello.U):
829 This variable conditionally defines the HAS_FTELLO symbol, which
830 indicates to the C program that the ftello() routine is available.
833 This variable conditionally defines the HAS_FTIME symbol, which indicates
834 that the ftime() routine exists. The ftime() routine is basically
835 a sub-second accuracy clock.
837 d_futimes (d_futimes.U):
838 This variable conditionally defines the HAS_FUTIMES symbol, which
839 indicates to the C program that the futimes() routine is available.
841 d_Gconvert (d_gconvert.U):
842 This variable holds what Gconvert is defined as to convert
843 floating point numbers into strings. By default, Configure
844 sets this macro to use the first of gconvert, gcvt, or sprintf
845 that pass sprintf-%g-like behaviour tests. If perl is using
846 long doubles, the macro uses the first of the following
847 functions that pass Configure's tests: qgcvt, sprintf (if
848 Configure knows how to make sprintf format long doubles--see
849 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
850 The gconvert_preference and gconvert_ld_preference variables
851 can be used to alter Configure's preferences, for doubles and
852 long doubles, respectively. If present, they contain a
853 space-separated list of one or more of the above function
854 names in the order they should be tried.
856 d_Gconvert may be set to override Configure with a platform-
857 specific function. If this function expects a double, a
858 different value may need to be set by the uselongdouble.cbu
859 call-back unit so that long doubles can be formatted without
862 d_getcwd (d_getcwd.U):
863 This variable conditionally defines the HAS_GETCWD symbol, which
864 indicates to the C program that the getcwd() routine is available
865 to get the current working directory.
867 d_getespwnam (d_getespwnam.U):
868 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
869 available to retrieve enchanced (shadow) password entries by name.
871 d_getfsstat (d_getfsstat.U):
872 This variable conditionally defines the HAS_GETFSSTAT symbol, which
873 indicates to the C program that the getfsstat() routine is available.
875 d_getgrent (d_getgrent.U):
876 This variable conditionally defines the HAS_GETGRENT symbol, which
877 indicates to the C program that the getgrent() routine is available
878 for sequential access of the group database.
880 d_getgrent_r (d_getgrent_r.U):
881 This variable conditionally defines the HAS_GETGRENT_R symbol,
882 which indicates to the C program that the getgrent_r()
883 routine is available.
885 d_getgrgid_r (d_getgrgid_r.U):
886 This variable conditionally defines the HAS_GETGRGID_R symbol,
887 which indicates to the C program that the getgrgid_r()
888 routine is available.
890 d_getgrnam_r (d_getgrnam_r.U):
891 This variable conditionally defines the HAS_GETGRNAM_R symbol,
892 which indicates to the C program that the getgrnam_r()
893 routine is available.
895 d_getgrps (d_getgrps.U):
896 This variable conditionally defines the HAS_GETGROUPS symbol, which
897 indicates to the C program that the getgroups() routine is available
898 to get the list of process groups.
900 d_gethbyaddr (d_gethbyad.U):
901 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
902 indicates to the C program that the gethostbyaddr() routine is available
903 to look up hosts by their IP addresses.
905 d_gethbyname (d_gethbynm.U):
906 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
907 indicates to the C program that the gethostbyname() routine is available
908 to look up host names in some data base or other.
910 d_gethent (d_gethent.U):
911 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
912 available to look up host names in some data base or another.
914 d_gethname (d_gethname.U):
915 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
916 indicates to the C program that the gethostname() routine may be
917 used to derive the host name.
919 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
920 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
921 which indicates to the C program that the gethostbyaddr_r()
922 routine is available.
924 d_gethostbyname_r (d_gethostbyname_r.U):
925 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
926 which indicates to the C program that the gethostbyname_r()
927 routine is available.
929 d_gethostent_r (d_gethostent_r.U):
930 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
931 which indicates to the C program that the gethostent_r()
932 routine is available.
934 d_gethostprotos (d_gethostprotos.U):
935 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
936 which indicates to the C program that <netdb.h> supplies
937 prototypes for the various gethost*() functions.
938 See also netdbtype.U for probing for various netdb types.
940 d_getitimer (d_getitimer.U):
941 This variable conditionally defines the HAS_GETITIMER symbol, which
942 indicates to the C program that the getitimer() routine is available.
944 d_getlogin (d_getlogin.U):
945 This variable conditionally defines the HAS_GETLOGIN symbol, which
946 indicates to the C program that the getlogin() routine is available
947 to get the login name.
949 d_getlogin_r (d_getlogin_r.U):
950 This variable conditionally defines the HAS_GETLOGIN_R symbol,
951 which indicates to the C program that the getlogin_r()
952 routine is available.
954 d_getmnt (d_getmnt.U):
955 This variable conditionally defines the HAS_GETMNT symbol, which
956 indicates to the C program that the getmnt() routine is available
957 to retrieve one or more mount info blocks by filename.
959 d_getmntent (d_getmntent.U):
960 This variable conditionally defines the HAS_GETMNTENT symbol, which
961 indicates to the C program that the getmntent() routine is available
962 to iterate through mounted files to get their mount info.
964 d_getnbyaddr (d_getnbyad.U):
965 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
966 indicates to the C program that the getnetbyaddr() routine is available
967 to look up networks by their IP addresses.
969 d_getnbyname (d_getnbynm.U):
970 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
971 indicates to the C program that the getnetbyname() routine is available
972 to look up networks by their names.
974 d_getnent (d_getnent.U):
975 This variable conditionally defines HAS_GETNETENT if getnetent() is
976 available to look up network names in some data base or another.
978 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
979 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
980 which indicates to the C program that the getnetbyaddr_r()
981 routine is available.
983 d_getnetbyname_r (d_getnetbyname_r.U):
984 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
985 which indicates to the C program that the getnetbyname_r()
986 routine is available.
988 d_getnetent_r (d_getnetent_r.U):
989 This variable conditionally defines the HAS_GETNETENT_R symbol,
990 which indicates to the C program that the getnetent_r()
991 routine is available.
993 d_getnetprotos (d_getnetprotos.U):
994 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
995 which indicates to the C program that <netdb.h> supplies
996 prototypes for the various getnet*() functions.
997 See also netdbtype.U for probing for various netdb types.
999 d_getpagsz (d_getpagsz.U):
1000 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1001 is available to get the system page size.
1003 d_getpbyname (d_getprotby.U):
1004 This variable conditionally defines the HAS_GETPROTOBYNAME
1005 symbol, which indicates to the C program that the
1006 getprotobyname() routine is available to look up protocols
1009 d_getpbynumber (d_getprotby.U):
1010 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1011 symbol, which indicates to the C program that the
1012 getprotobynumber() routine is available to look up protocols
1015 d_getpent (d_getpent.U):
1016 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1017 available to look up protocols in some data base or another.
1019 d_getpgid (d_getpgid.U):
1020 This variable conditionally defines the HAS_GETPGID symbol, which
1021 indicates to the C program that the getpgid(pid) function
1022 is available to get the process group id.
1024 d_getpgrp (d_getpgrp.U):
1025 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1026 available to get the current process group.
1028 d_getpgrp2 (d_getpgrp2.U):
1029 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1030 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1031 is available to get the current process group.
1033 d_getppid (d_getppid.U):
1034 This variable conditionally defines the HAS_GETPPID symbol, which
1035 indicates to the C program that the getppid() routine is available
1036 to get the parent process ID.
1038 d_getprior (d_getprior.U):
1039 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1040 is available to get a process's priority.
1042 d_getprotobyname_r (d_getprotobyname_r.U):
1043 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1044 which indicates to the C program that the getprotobyname_r()
1045 routine is available.
1047 d_getprotobynumber_r (d_getprotobynumber_r.U):
1048 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1049 which indicates to the C program that the getprotobynumber_r()
1050 routine is available.
1052 d_getprotoent_r (d_getprotoent_r.U):
1053 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1054 which indicates to the C program that the getprotoent_r()
1055 routine is available.
1057 d_getprotoprotos (d_getprotoprotos.U):
1058 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1059 which indicates to the C program that <netdb.h> supplies
1060 prototypes for the various getproto*() functions.
1061 See also netdbtype.U for probing for various netdb types.
1063 d_getprpwnam (d_getprpwnam.U):
1064 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1065 available to retrieve protected (shadow) password entries by name.
1067 d_getpwent (d_getpwent.U):
1068 This variable conditionally defines the HAS_GETPWENT symbol, which
1069 indicates to the C program that the getpwent() routine is available
1070 for sequential access of the passwd database.
1072 d_getpwent_r (d_getpwent_r.U):
1073 This variable conditionally defines the HAS_GETPWENT_R symbol,
1074 which indicates to the C program that the getpwent_r()
1075 routine is available.
1077 d_getpwnam_r (d_getpwnam_r.U):
1078 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1079 which indicates to the C program that the getpwnam_r()
1080 routine is available.
1082 d_getpwuid_r (d_getpwuid_r.U):
1083 This variable conditionally defines the HAS_GETPWUID_R symbol,
1084 which indicates to the C program that the getpwuid_r()
1085 routine is available.
1087 d_getsbyname (d_getsrvby.U):
1088 This variable conditionally defines the HAS_GETSERVBYNAME
1089 symbol, which indicates to the C program that the
1090 getservbyname() routine is available to look up services
1093 d_getsbyport (d_getsrvby.U):
1094 This variable conditionally defines the HAS_GETSERVBYPORT
1095 symbol, which indicates to the C program that the
1096 getservbyport() routine is available to look up services
1099 d_getsent (d_getsent.U):
1100 This variable conditionally defines HAS_GETSERVENT if getservent() is
1101 available to look up network services in some data base or another.
1103 d_getservbyname_r (d_getservbyname_r.U):
1104 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1105 which indicates to the C program that the getservbyname_r()
1106 routine is available.
1108 d_getservbyport_r (d_getservbyport_r.U):
1109 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1110 which indicates to the C program that the getservbyport_r()
1111 routine is available.
1113 d_getservent_r (d_getservent_r.U):
1114 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1115 which indicates to the C program that the getservent_r()
1116 routine is available.
1118 d_getservprotos (d_getservprotos.U):
1119 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1120 which indicates to the C program that <netdb.h> supplies
1121 prototypes for the various getserv*() functions.
1122 See also netdbtype.U for probing for various netdb types.
1124 d_getspnam (d_getspnam.U):
1125 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1126 available to retrieve SysV shadow password entries by name.
1128 d_getspnam_r (d_getspnam_r.U):
1129 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1130 which indicates to the C program that the getspnam_r()
1131 routine is available.
1133 d_gettimeod (d_ftime.U):
1134 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1135 indicates that the gettimeofday() system call exists (to obtain a
1136 sub-second accuracy clock). You should probably include <sys/resource.h>.
1138 d_gmtime_r (d_gmtime_r.U):
1139 This variable conditionally defines the HAS_GMTIME_R symbol,
1140 which indicates to the C program that the gmtime_r()
1141 routine is available.
1143 d_gnulibc (d_gnulibc.U):
1144 Defined if we're dealing with the GNU C Library.
1146 d_grpasswd (i_grp.U):
1147 This variable conditionally defines GRPASSWD, which indicates
1148 that struct group in <grp.h> contains gr_passwd.
1150 d_hasmntopt (d_hasmntopt.U):
1151 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1152 indicates to the C program that the hasmntopt() routine is available
1153 to query the mount options of file systems.
1155 d_htonl (d_htonl.U):
1156 This variable conditionally defines HAS_HTONL if htonl() and its
1157 friends are available to do network order byte swapping.
1159 d_ilogbl (d_ilogbl.U):
1160 This variable conditionally defines the HAS_ILOGBL symbol, which
1161 indicates to the C program that the ilogbl() routine is available.
1162 If scalbnl is also present we can emulate frexpl.
1164 d_inc_version_list (inc_version_list.U):
1165 This variable conditionally defines PERL_INC_VERSION_LIST.
1166 It is set to undef when PERL_INC_VERSION_LIST is empty.
1168 d_index (d_strchr.U):
1169 This variable conditionally defines HAS_INDEX if index() and
1170 rindex() are available for string searching.
1172 d_inetaton (d_inetaton.U):
1173 This variable conditionally defines the HAS_INET_ATON symbol, which
1174 indicates to the C program that the inet_aton() function is available
1175 to parse IP address "dotted-quad" strings.
1177 d_int64_t (d_int64_t.U):
1178 This symbol will be defined if the C compiler supports int64_t.
1180 d_isascii (d_isascii.U):
1181 This variable conditionally defines the HAS_ISASCII constant,
1182 which indicates to the C program that isascii() is available.
1184 d_isfinite (d_isfinite.U):
1185 This variable conditionally defines the HAS_ISFINITE symbol, which
1186 indicates to the C program that the isfinite() routine is available.
1188 d_isinf (d_isinf.U):
1189 This variable conditionally defines the HAS_ISINF symbol, which
1190 indicates to the C program that the isinf() routine is available.
1192 d_isnan (d_isnan.U):
1193 This variable conditionally defines the HAS_ISNAN symbol, which
1194 indicates to the C program that the isnan() routine is available.
1196 d_isnanl (d_isnanl.U):
1197 This variable conditionally defines the HAS_ISNANL symbol, which
1198 indicates to the C program that the isnanl() routine is available.
1200 d_killpg (d_killpg.U):
1201 This variable conditionally defines the HAS_KILLPG symbol, which
1202 indicates to the C program that the killpg() routine is available
1203 to kill process groups.
1205 d_lchown (d_lchown.U):
1206 This variable conditionally defines the HAS_LCHOWN symbol, which
1207 indicates to the C program that the lchown() routine is available
1208 to operate on a symbolic link (instead of following the link).
1210 d_ldbl_dig (d_ldbl_dig.U):
1211 This variable conditionally defines d_ldbl_dig if this system's
1212 header files provide LDBL_DIG, which is the number of significant
1213 digits in a long double precision number.
1215 d_libm_lib_version (d_libm_lib_version.U):
1216 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1217 which indicates to the C program that math.h defines _LIB_VERSION
1218 being available in libm
1221 This variable conditionally defines HAS_LINK if link() is
1222 available to create hard links.
1224 d_localtime_r (d_localtime_r.U):
1225 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1226 which indicates to the C program that the localtime_r()
1227 routine is available.
1229 d_locconv (d_locconv.U):
1230 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1231 available for numeric and monetary formatting conventions.
1233 d_lockf (d_lockf.U):
1234 This variable conditionally defines HAS_LOCKF if lockf() is
1235 available to do file locking.
1237 d_longdbl (d_longdbl.U):
1238 This variable conditionally defines HAS_LONG_DOUBLE if
1239 the long double type is supported.
1241 d_longlong (d_longlong.U):
1242 This variable conditionally defines HAS_LONG_LONG if
1243 the long long type is supported.
1245 d_lseekproto (d_lseekproto.U):
1246 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1247 which indicates to the C program that the system provides
1248 a prototype for the lseek() function. Otherwise, it is
1249 up to the program to supply one.
1251 d_lstat (d_lstat.U):
1252 This variable conditionally defines HAS_LSTAT if lstat() is
1253 available to do file stats on symbolic links.
1255 d_madvise (d_madvise.U):
1256 This variable conditionally defines HAS_MADVISE if madvise() is
1257 available to map a file into memory.
1259 d_malloc_good_size (d_malloc_size.U):
1260 This symbol, if defined, indicates that the malloc_good_size
1261 routine is available for use.
1263 d_malloc_size (d_malloc_size.U):
1264 This symbol, if defined, indicates that the malloc_size
1265 routine is available for use.
1267 d_mblen (d_mblen.U):
1268 This variable conditionally defines the HAS_MBLEN symbol, which
1269 indicates to the C program that the mblen() routine is available
1270 to find the number of bytes in a multibye character.
1272 d_mbstowcs (d_mbstowcs.U):
1273 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1274 indicates to the C program that the mbstowcs() routine is available
1275 to convert a multibyte string into a wide character string.
1277 d_mbtowc (d_mbtowc.U):
1278 This variable conditionally defines the HAS_MBTOWC symbol, which
1279 indicates to the C program that the mbtowc() routine is available
1280 to convert multibyte to a wide character.
1282 d_memchr (d_memchr.U):
1283 This variable conditionally defines the HAS_MEMCHR symbol, which
1284 indicates to the C program that the memchr() routine is available
1285 to locate characters within a C string.
1287 d_memcmp (d_memcmp.U):
1288 This variable conditionally defines the HAS_MEMCMP symbol, which
1289 indicates to the C program that the memcmp() routine is available
1290 to compare blocks of memory.
1292 d_memcpy (d_memcpy.U):
1293 This variable conditionally defines the HAS_MEMCPY symbol, which
1294 indicates to the C program that the memcpy() routine is available
1295 to copy blocks of memory.
1297 d_memmove (d_memmove.U):
1298 This variable conditionally defines the HAS_MEMMOVE symbol, which
1299 indicates to the C program that the memmove() routine is available
1300 to copy potentatially overlapping blocks of memory.
1302 d_memset (d_memset.U):
1303 This variable conditionally defines the HAS_MEMSET symbol, which
1304 indicates to the C program that the memset() routine is available
1305 to set blocks of memory.
1307 d_mkdir (d_mkdir.U):
1308 This variable conditionally defines the HAS_MKDIR symbol, which
1309 indicates to the C program that the mkdir() routine is available
1310 to create directories..
1312 d_mkdtemp (d_mkdtemp.U):
1313 This variable conditionally defines the HAS_MKDTEMP symbol, which
1314 indicates to the C program that the mkdtemp() routine is available
1315 to exclusively create a uniquely named temporary directory.
1317 d_mkfifo (d_mkfifo.U):
1318 This variable conditionally defines the HAS_MKFIFO symbol, which
1319 indicates to the C program that the mkfifo() routine is available.
1321 d_mkstemp (d_mkstemp.U):
1322 This variable conditionally defines the HAS_MKSTEMP symbol, which
1323 indicates to the C program that the mkstemp() routine is available
1324 to exclusively create and open a uniquely named temporary file.
1326 d_mkstemps (d_mkstemps.U):
1327 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1328 indicates to the C program that the mkstemps() routine is available
1329 to exclusively create and open a uniquely named (with a suffix)
1332 d_mktime (d_mktime.U):
1333 This variable conditionally defines the HAS_MKTIME symbol, which
1334 indicates to the C program that the mktime() routine is available.
1337 This variable conditionally defines HAS_MMAP if mmap() is
1338 available to map a file into memory.
1340 d_modfl (d_modfl.U):
1341 This variable conditionally defines the HAS_MODFL symbol, which
1342 indicates to the C program that the modfl() routine is available.
1344 d_modfl_pow32_bug (d_modfl.U):
1345 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1346 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1347 For example from 4294967303.150000 one would get 4294967302.000000
1348 and 1.150000. The bug has been seen in certain versions of glibc,
1349 release 2.2.2 is known to be okay.
1351 d_modflproto (d_modfl.U):
1352 This symbol, if defined, indicates that the system provides
1353 a prototype for the modfl() function. Otherwise, it is up
1354 to the program to supply one. C99 says it should be
1355 long double modfl(long double, long double *);
1357 d_mprotect (d_mprotect.U):
1358 This variable conditionally defines HAS_MPROTECT if mprotect() is
1359 available to modify the access protection of a memory mapped file.
1362 This variable conditionally defines the HAS_MSG symbol, which
1363 indicates that the entire msg*(2) library is present.
1365 d_msg_ctrunc (d_socket.U):
1366 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1367 which indicates that the MSG_CTRUNC is available. #ifdef is
1368 not enough because it may be an enum, glibc has been known to do this.
1370 d_msg_dontroute (d_socket.U):
1371 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1372 which indicates that the MSG_DONTROUTE is available. #ifdef is
1373 not enough because it may be an enum, glibc has been known to do this.
1375 d_msg_oob (d_socket.U):
1376 This variable conditionally defines the HAS_MSG_OOB symbol,
1377 which indicates that the MSG_OOB is available. #ifdef is
1378 not enough because it may be an enum, glibc has been known to do this.
1380 d_msg_peek (d_socket.U):
1381 This variable conditionally defines the HAS_MSG_PEEK symbol,
1382 which indicates that the MSG_PEEK is available. #ifdef is
1383 not enough because it may be an enum, glibc has been known to do this.
1385 d_msg_proxy (d_socket.U):
1386 This variable conditionally defines the HAS_MSG_PROXY symbol,
1387 which indicates that the MSG_PROXY is available. #ifdef is
1388 not enough because it may be an enum, glibc has been known to do this.
1390 d_msgctl (d_msgctl.U):
1391 This variable conditionally defines the HAS_MSGCTL symbol, which
1392 indicates to the C program that the msgctl() routine is available.
1394 d_msgget (d_msgget.U):
1395 This variable conditionally defines the HAS_MSGGET symbol, which
1396 indicates to the C program that the msgget() routine is available.
1398 d_msghdr_s (d_msghdr_s.U):
1399 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1400 which indicates that the struct msghdr is supported.
1402 d_msgrcv (d_msgrcv.U):
1403 This variable conditionally defines the HAS_MSGRCV symbol, which
1404 indicates to the C program that the msgrcv() routine is available.
1406 d_msgsnd (d_msgsnd.U):
1407 This variable conditionally defines the HAS_MSGSND symbol, which
1408 indicates to the C program that the msgsnd() routine is available.
1410 d_msync (d_msync.U):
1411 This variable conditionally defines HAS_MSYNC if msync() is
1412 available to synchronize a mapped file.
1414 d_munmap (d_munmap.U):
1415 This variable conditionally defines HAS_MUNMAP if munmap() is
1416 available to unmap a region mapped by mmap().
1418 d_mymalloc (mallocsrc.U):
1419 This variable conditionally defines MYMALLOC in case other parts
1420 of the source want to take special action if MYMALLOC is used.
1421 This may include different sorts of profiling or error detection.
1424 This variable conditionally defines the HAS_NICE symbol, which
1425 indicates to the C program that the nice() routine is available.
1427 d_nl_langinfo (d_nl_langinfo.U):
1428 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1429 indicates to the C program that the nl_langinfo() routine is available.
1431 d_nv_preserves_uv (perlxv.U):
1432 This variable indicates whether a variable of type nvtype
1433 can preserve all the bits a variable of type uvtype.
1435 d_nv_zero_is_allbits_zero (perlxv.U):
1436 This variable indicates whether a variable of type nvtype
1437 stores 0.0 in memory as all bits zero.
1439 d_off64_t (d_off64_t.U):
1440 This symbol will be defined if the C compiler supports off64_t.
1442 d_old_pthread_create_joinable (d_pthrattrj.U):
1443 This variable conditionally defines pthread_create_joinable.
1444 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1446 d_oldpthreads (usethreads.U):
1447 This variable conditionally defines the OLD_PTHREADS_API symbol,
1448 and indicates that Perl should be built to use the old
1449 draft POSIX threads API. This is only potentially meaningful if
1452 d_oldsock (d_socket.U):
1453 This variable conditionally defines the OLDSOCKET symbol, which
1454 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1456 d_open3 (d_open3.U):
1457 This variable conditionally defines the HAS_OPEN3 manifest constant,
1458 which indicates to the C program that the 3 argument version of
1459 the open(2) function is available.
1461 d_pathconf (d_pathconf.U):
1462 This variable conditionally defines the HAS_PATHCONF symbol, which
1463 indicates to the C program that the pathconf() routine is available
1464 to determine file-system related limits and options associated
1465 with a given filename.
1467 d_pause (d_pause.U):
1468 This variable conditionally defines the HAS_PAUSE symbol, which
1469 indicates to the C program that the pause() routine is available
1470 to suspend a process until a signal is received.
1472 d_perl_otherlibdirs (otherlibdirs.U):
1473 This variable conditionally defines PERL_OTHERLIBDIRS, which
1474 contains a colon-separated set of paths for the perl binary to
1475 include in @INC. See also otherlibdirs.
1477 d_phostname (d_gethname.U):
1478 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1479 contains the shell command which, when fed to popen(), may be
1480 used to derive the host name.
1483 This variable conditionally defines the HAS_PIPE symbol, which
1484 indicates to the C program that the pipe() routine is available
1485 to create an inter-process channel.
1488 This variable conditionally defines the HAS_POLL symbol, which
1489 indicates to the C program that the poll() routine is available
1490 to poll active file descriptors.
1492 d_portable (d_portable.U):
1493 This variable conditionally defines the PORTABLE symbol, which
1494 indicates to the C program that it should not assume that it is
1495 running on the machine it was compiled on.
1497 d_PRId64 (quadfio.U):
1498 This variable conditionally defines the PERL_PRId64 symbol, which
1499 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1501 d_PRIeldbl (longdblfio.U):
1502 This variable conditionally defines the PERL_PRIfldbl symbol, which
1503 indiciates that stdio has a symbol to print long doubles.
1505 d_PRIEUldbl (longdblfio.U):
1506 This variable conditionally defines the PERL_PRIfldbl symbol, which
1507 indiciates that stdio has a symbol to print long doubles.
1508 The 'U' in the name is to separate this from d_PRIeldbl so that even
1509 case-blind systems can see the difference.
1511 d_PRIfldbl (longdblfio.U):
1512 This variable conditionally defines the PERL_PRIfldbl symbol, which
1513 indiciates that stdio has a symbol to print long doubles.
1515 d_PRIFUldbl (longdblfio.U):
1516 This variable conditionally defines the PERL_PRIfldbl symbol, which
1517 indiciates that stdio has a symbol to print long doubles.
1518 The 'U' in the name is to separate this from d_PRIfldbl so that even
1519 case-blind systems can see the difference.
1521 d_PRIgldbl (longdblfio.U):
1522 This variable conditionally defines the PERL_PRIfldbl symbol, which
1523 indiciates that stdio has a symbol to print long doubles.
1525 d_PRIGUldbl (longdblfio.U):
1526 This variable conditionally defines the PERL_PRIfldbl symbol, which
1527 indiciates that stdio has a symbol to print long doubles.
1528 The 'U' in the name is to separate this from d_PRIgldbl so that even
1529 case-blind systems can see the difference.
1531 d_PRIi64 (quadfio.U):
1532 This variable conditionally defines the PERL_PRIi64 symbol, which
1533 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1535 d_PRIo64 (quadfio.U):
1536 This variable conditionally defines the PERL_PRIo64 symbol, which
1537 indiciates that stdio has a symbol to print 64-bit octal numbers.
1539 d_PRIu64 (quadfio.U):
1540 This variable conditionally defines the PERL_PRIu64 symbol, which
1541 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1544 d_PRIx64 (quadfio.U):
1545 This variable conditionally defines the PERL_PRIx64 symbol, which
1546 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1548 d_PRIXU64 (quadfio.U):
1549 This variable conditionally defines the PERL_PRIXU64 symbol, which
1550 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1551 The 'U' in the name is to separate this from d_PRIx64 so that even
1552 case-blind systems can see the difference.
1554 d_procselfexe (d_procselfexe.U):
1555 Defined if $procselfexe is symlink to the absolute
1556 pathname of the executing program.
1558 d_pthread_atfork (d_pthread_atfork.U):
1559 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1560 which indicates to the C program that the pthread_atfork()
1561 routine is available.
1563 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1564 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1565 pthread_attr_setscope() is available to set the contention scope
1566 attribute of a thread attribute object.
1568 d_pthread_yield (d_pthread_y.U):
1569 This variable conditionally defines the HAS_PTHREAD_YIELD
1570 symbol if the pthread_yield routine is available to yield
1571 the execution of the current thread.
1574 This variable conditionally defines PWAGE, which indicates
1575 that struct passwd contains pw_age.
1577 d_pwchange (i_pwd.U):
1578 This variable conditionally defines PWCHANGE, which indicates
1579 that struct passwd contains pw_change.
1581 d_pwclass (i_pwd.U):
1582 This variable conditionally defines PWCLASS, which indicates
1583 that struct passwd contains pw_class.
1585 d_pwcomment (i_pwd.U):
1586 This variable conditionally defines PWCOMMENT, which indicates
1587 that struct passwd contains pw_comment.
1589 d_pwexpire (i_pwd.U):
1590 This variable conditionally defines PWEXPIRE, which indicates
1591 that struct passwd contains pw_expire.
1593 d_pwgecos (i_pwd.U):
1594 This variable conditionally defines PWGECOS, which indicates
1595 that struct passwd contains pw_gecos.
1597 d_pwpasswd (i_pwd.U):
1598 This variable conditionally defines PWPASSWD, which indicates
1599 that struct passwd contains pw_passwd.
1601 d_pwquota (i_pwd.U):
1602 This variable conditionally defines PWQUOTA, which indicates
1603 that struct passwd contains pw_quota.
1605 d_qgcvt (d_qgcvt.U):
1606 This variable conditionally defines the HAS_QGCVT symbol, which
1607 indicates to the C program that the qgcvt() routine is available.
1609 d_quad (quadtype.U):
1610 This variable, if defined, tells that there's a 64-bit integer type,
1613 d_random_r (d_random_r.U):
1614 This variable conditionally defines the HAS_RANDOM_R symbol,
1615 which indicates to the C program that the random_r()
1616 routine is available.
1618 d_readdir (d_readdir.U):
1619 This variable conditionally defines HAS_READDIR if readdir() is
1620 available to read directory entries.
1622 d_readdir64_r (d_readdir64_r.U):
1623 This variable conditionally defines the HAS_READDIR64_R symbol,
1624 which indicates to the C program that the readdir64_r()
1625 routine is available.
1627 d_readdir_r (d_readdir_r.U):
1628 This variable conditionally defines the HAS_READDIR_R symbol,
1629 which indicates to the C program that the readdir_r()
1630 routine is available.
1632 d_readlink (d_readlink.U):
1633 This variable conditionally defines the HAS_READLINK symbol, which
1634 indicates to the C program that the readlink() routine is available
1635 to read the value of a symbolic link.
1637 d_readv (d_readv.U):
1638 This variable conditionally defines the HAS_READV symbol, which
1639 indicates to the C program that the readv() routine is available.
1641 d_recvmsg (d_recvmsg.U):
1642 This variable conditionally defines the HAS_RECVMSG symbol, which
1643 indicates to the C program that the recvmsg() routine is available.
1645 d_rename (d_rename.U):
1646 This variable conditionally defines the HAS_RENAME symbol, which
1647 indicates to the C program that the rename() routine is available
1650 d_rewinddir (d_readdir.U):
1651 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1654 d_rmdir (d_rmdir.U):
1655 This variable conditionally defines HAS_RMDIR if rmdir() is
1656 available to remove directories.
1658 d_safebcpy (d_safebcpy.U):
1659 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1660 the bcopy() routine can do overlapping copies. Normally, you
1661 should probably use memmove().
1663 d_safemcpy (d_safemcpy.U):
1664 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1665 the memcpy() routine can do overlapping copies.
1666 For overlapping copies, memmove() should be used, if available.
1668 d_sanemcmp (d_sanemcmp.U):
1669 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1670 the memcpy() routine is available and can be used to compare relative
1671 magnitudes of chars with their high bits set.
1673 d_sbrkproto (d_sbrkproto.U):
1674 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1675 which indicates to the C program that the system provides
1676 a prototype for the sbrk() function. Otherwise, it is
1677 up to the program to supply one.
1679 d_scalbnl (d_scalbnl.U):
1680 This variable conditionally defines the HAS_SCALBNL symbol, which
1681 indicates to the C program that the scalbnl() routine is available.
1682 If ilogbl is also present we can emulate frexpl.
1684 d_sched_yield (d_pthread_y.U):
1685 This variable conditionally defines the HAS_SCHED_YIELD
1686 symbol if the sched_yield routine is available to yield
1687 the execution of the current thread.
1689 d_scm_rights (d_socket.U):
1690 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1691 which indicates that the SCM_RIGHTS is available. #ifdef is
1692 not enough because it may be an enum, glibc has been known to do this.
1694 d_SCNfldbl (longdblfio.U):
1695 This variable conditionally defines the PERL_PRIfldbl symbol, which
1696 indiciates that stdio has a symbol to scan long doubles.
1698 d_seekdir (d_readdir.U):
1699 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1702 d_select (d_select.U):
1703 This variable conditionally defines HAS_SELECT if select() is
1704 available to select active file descriptors. A <sys/time.h>
1705 inclusion may be necessary for the timeout field.
1708 This variable conditionally defines the HAS_SEM symbol, which
1709 indicates that the entire sem*(2) library is present.
1711 d_semctl (d_semctl.U):
1712 This variable conditionally defines the HAS_SEMCTL symbol, which
1713 indicates to the C program that the semctl() routine is available.
1715 d_semctl_semid_ds (d_union_semun.U):
1716 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1717 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1719 d_semctl_semun (d_union_semun.U):
1720 This variable conditionally defines USE_SEMCTL_SEMUN, which
1721 indicates that union semun is to be used for semctl IPC_STAT.
1723 d_semget (d_semget.U):
1724 This variable conditionally defines the HAS_SEMGET symbol, which
1725 indicates to the C program that the semget() routine is available.
1727 d_semop (d_semop.U):
1728 This variable conditionally defines the HAS_SEMOP symbol, which
1729 indicates to the C program that the semop() routine is available.
1731 d_sendmsg (d_sendmsg.U):
1732 This variable conditionally defines the HAS_SENDMSG symbol, which
1733 indicates to the C program that the sendmsg() routine is available.
1735 d_setegid (d_setegid.U):
1736 This variable conditionally defines the HAS_SETEGID symbol, which
1737 indicates to the C program that the setegid() routine is available
1738 to change the effective gid of the current program.
1740 d_seteuid (d_seteuid.U):
1741 This variable conditionally defines the HAS_SETEUID symbol, which
1742 indicates to the C program that the seteuid() routine is available
1743 to change the effective uid of the current program.
1745 d_setgrent (d_setgrent.U):
1746 This variable conditionally defines the HAS_SETGRENT symbol, which
1747 indicates to the C program that the setgrent() routine is available
1748 for initializing sequential access to the group database.
1750 d_setgrent_r (d_setgrent_r.U):
1751 This variable conditionally defines the HAS_SETGRENT_R symbol,
1752 which indicates to the C program that the setgrent_r()
1753 routine is available.
1755 d_setgrps (d_setgrps.U):
1756 This variable conditionally defines the HAS_SETGROUPS symbol, which
1757 indicates to the C program that the setgroups() routine is available
1758 to set the list of process groups.
1760 d_sethent (d_sethent.U):
1761 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1764 d_sethostent_r (d_sethostent_r.U):
1765 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1766 which indicates to the C program that the sethostent_r()
1767 routine is available.
1769 d_setitimer (d_setitimer.U):
1770 This variable conditionally defines the HAS_SETITIMER symbol, which
1771 indicates to the C program that the setitimer() routine is available.
1773 d_setlinebuf (d_setlnbuf.U):
1774 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1775 indicates to the C program that the setlinebuf() routine is available
1776 to change stderr or stdout from block-buffered or unbuffered to a
1779 d_setlocale (d_setlocale.U):
1780 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1781 available to handle locale-specific ctype implementations.
1783 d_setlocale_r (d_setlocale_r.U):
1784 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1785 which indicates to the C program that the setlocale_r()
1786 routine is available.
1788 d_setnent (d_setnent.U):
1789 This variable conditionally defines HAS_SETNETENT if setnetent() is
1792 d_setnetent_r (d_setnetent_r.U):
1793 This variable conditionally defines the HAS_SETNETENT_R symbol,
1794 which indicates to the C program that the setnetent_r()
1795 routine is available.
1797 d_setpent (d_setpent.U):
1798 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1801 d_setpgid (d_setpgid.U):
1802 This variable conditionally defines the HAS_SETPGID symbol if the
1803 setpgid(pid, gpid) function is available to set process group ID.
1805 d_setpgrp (d_setpgrp.U):
1806 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1807 available to set the current process group.
1809 d_setpgrp2 (d_setpgrp2.U):
1810 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1811 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1812 is available to set the current process group.
1814 d_setprior (d_setprior.U):
1815 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1816 is available to set a process's priority.
1818 d_setproctitle (d_setproctitle.U):
1819 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1820 which indicates to the C program that the setproctitle() routine
1823 d_setprotoent_r (d_setprotoent_r.U):
1824 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1825 which indicates to the C program that the setprotoent_r()
1826 routine is available.
1828 d_setpwent (d_setpwent.U):
1829 This variable conditionally defines the HAS_SETPWENT symbol, which
1830 indicates to the C program that the setpwent() routine is available
1831 for initializing sequential access to the passwd database.
1833 d_setpwent_r (d_setpwent_r.U):
1834 This variable conditionally defines the HAS_SETPWENT_R symbol,
1835 which indicates to the C program that the setpwent_r()
1836 routine is available.
1838 d_setregid (d_setregid.U):
1839 This variable conditionally defines HAS_SETREGID if setregid() is
1840 available to change the real and effective gid of the current
1843 d_setresgid (d_setregid.U):
1844 This variable conditionally defines HAS_SETRESGID if setresgid() is
1845 available to change the real, effective and saved gid of the current
1848 d_setresuid (d_setreuid.U):
1849 This variable conditionally defines HAS_SETREUID if setresuid() is
1850 available to change the real, effective and saved uid of the current
1853 d_setreuid (d_setreuid.U):
1854 This variable conditionally defines HAS_SETREUID if setreuid() is
1855 available to change the real and effective uid of the current
1858 d_setrgid (d_setrgid.U):
1859 This variable conditionally defines the HAS_SETRGID symbol, which
1860 indicates to the C program that the setrgid() routine is available
1861 to change the real gid of the current program.
1863 d_setruid (d_setruid.U):
1864 This variable conditionally defines the HAS_SETRUID symbol, which
1865 indicates to the C program that the setruid() routine is available
1866 to change the real uid of the current program.
1868 d_setsent (d_setsent.U):
1869 This variable conditionally defines HAS_SETSERVENT if setservent() is
1872 d_setservent_r (d_setservent_r.U):
1873 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1874 which indicates to the C program that the setservent_r()
1875 routine is available.
1877 d_setsid (d_setsid.U):
1878 This variable conditionally defines HAS_SETSID if setsid() is
1879 available to set the process group ID.
1881 d_setvbuf (d_setvbuf.U):
1882 This variable conditionally defines the HAS_SETVBUF symbol, which
1883 indicates to the C program that the setvbuf() routine is available
1884 to change buffering on an open stdio stream.
1887 This variable conditionally defines the USE_SFIO symbol,
1888 and indicates whether sfio is available (and should be used).
1891 This variable conditionally defines the HAS_SHM symbol, which
1892 indicates that the entire shm*(2) library is present.
1894 d_shmat (d_shmat.U):
1895 This variable conditionally defines the HAS_SHMAT symbol, which
1896 indicates to the C program that the shmat() routine is available.
1898 d_shmatprototype (d_shmat.U):
1899 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1900 symbol, which indicates that sys/shm.h has a prototype for
1903 d_shmctl (d_shmctl.U):
1904 This variable conditionally defines the HAS_SHMCTL symbol, which
1905 indicates to the C program that the shmctl() routine is available.
1907 d_shmdt (d_shmdt.U):
1908 This variable conditionally defines the HAS_SHMDT symbol, which
1909 indicates to the C program that the shmdt() routine is available.
1911 d_shmget (d_shmget.U):
1912 This variable conditionally defines the HAS_SHMGET symbol, which
1913 indicates to the C program that the shmget() routine is available.
1915 d_sigaction (d_sigaction.U):
1916 This variable conditionally defines the HAS_SIGACTION symbol, which
1917 indicates that the Vr4 sigaction() routine is available.
1919 d_sigprocmask (d_sigprocmask.U):
1920 This variable conditionally defines HAS_SIGPROCMASK
1921 if sigprocmask() is available to examine or change the signal mask
1922 of the calling process.
1924 d_sigsetjmp (d_sigsetjmp.U):
1925 This variable conditionally defines the HAS_SIGSETJMP symbol,
1926 which indicates that the sigsetjmp() routine is available to
1927 call setjmp() and optionally save the process's signal mask.
1929 d_sitearch (sitearch.U):
1930 This variable conditionally defines SITEARCH to hold the pathname
1931 of architecture-dependent library files for $package. If
1932 $sitearch is the same as $archlib, then this is set to undef.
1934 d_snprintf (d_snprintf.U):
1935 This variable conditionally defines the HAS_SNPRINTF symbol, which
1936 indicates to the C program that the snprintf () library function
1939 d_sockatmark (d_sockatmark.U):
1940 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1941 indicates to the C program that the sockatmark() routine is available.
1943 d_sockatmarkproto (d_sockatmarkproto.U):
1944 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1945 which indicates to the C program that the system provides
1946 a prototype for the sockatmark() function. Otherwise, it is
1947 up to the program to supply one.
1949 d_socket (d_socket.U):
1950 This variable conditionally defines HAS_SOCKET, which indicates
1951 that the BSD socket interface is supported.
1953 d_socklen_t (d_socklen_t.U):
1954 This symbol will be defined if the C compiler supports socklen_t.
1956 d_sockpair (d_socket.U):
1957 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1958 indicates that the BSD socketpair() is supported.
1960 d_socks5_init (d_socks5_init.U):
1961 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1962 indicates to the C program that the socks5_init() routine is available.
1964 d_sprintf_returns_strlen (d_sprintf_len.U):
1965 This variable defines whether sprintf returns the length of the string
1966 (as per the ANSI spec). Some C libraries retain compatibility with
1967 pre-ANSI C and return a pointer to the passed in buffer; for these
1968 this variable will be undef.
1970 d_sqrtl (d_sqrtl.U):
1971 This variable conditionally defines the HAS_SQRTL symbol, which
1972 indicates to the C program that the sqrtl() routine is available.
1974 d_srand48_r (d_srand48_r.U):
1975 This variable conditionally defines the HAS_SRAND48_R symbol,
1976 which indicates to the C program that the srand48_r()
1977 routine is available.
1979 d_srandom_r (d_srandom_r.U):
1980 This variable conditionally defines the HAS_SRANDOM_R symbol,
1981 which indicates to the C program that the srandom_r()
1982 routine is available.
1984 d_sresgproto (d_sresgproto.U):
1985 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1986 which indicates to the C program that the system provides
1987 a prototype for the setresgid() function. Otherwise, it is
1988 up to the program to supply one.
1990 d_sresuproto (d_sresuproto.U):
1991 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1992 which indicates to the C program that the system provides
1993 a prototype for the setresuid() function. Otherwise, it is
1994 up to the program to supply one.
1996 d_statblks (d_statblks.U):
1997 This variable conditionally defines USE_STAT_BLOCKS
1998 if this system has a stat structure declaring
1999 st_blksize and st_blocks.
2001 d_statfs_f_flags (d_statfs_f_flags.U):
2002 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2003 symbol, which indicates to struct statfs from has f_flags member.
2004 This kind of struct statfs is coming from sys/mount.h (BSD),
2005 not from sys/statfs.h (SYSV).
2007 d_statfs_s (d_statfs_s.U):
2008 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2009 which indicates that the struct statfs is supported.
2011 d_statvfs (d_statvfs.U):
2012 This variable conditionally defines the HAS_STATVFS symbol, which
2013 indicates to the C program that the statvfs() routine is available.
2015 d_stdio_cnt_lval (d_stdstdio.U):
2016 This variable conditionally defines STDIO_CNT_LVALUE if the
2017 FILE_cnt macro can be used as an lvalue.
2019 d_stdio_ptr_lval (d_stdstdio.U):
2020 This variable conditionally defines STDIO_PTR_LVALUE if the
2021 FILE_ptr macro can be used as an lvalue.
2023 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2024 This symbol is defined if using the FILE_ptr macro as an lvalue
2025 to increase the pointer by n leaves File_cnt(fp) unchanged.
2027 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2028 This symbol is defined if using the FILE_ptr macro as an lvalue
2029 to increase the pointer by n has the side effect of decreasing the
2030 value of File_cnt(fp) by n.
2032 d_stdio_stream_array (stdio_streams.U):
2033 This variable tells whether there is an array holding
2036 d_stdiobase (d_stdstdio.U):
2037 This variable conditionally defines USE_STDIO_BASE if this system
2038 has a FILE structure declaring a usable _base field (or equivalent)
2041 d_stdstdio (d_stdstdio.U):
2042 This variable conditionally defines USE_STDIO_PTR if this system
2043 has a FILE structure declaring usable _ptr and _cnt fields (or
2044 equivalent) in stdio.h.
2046 d_strchr (d_strchr.U):
2047 This variable conditionally defines HAS_STRCHR if strchr() and
2048 strrchr() are available for string searching.
2050 d_strcoll (d_strcoll.U):
2051 This variable conditionally defines HAS_STRCOLL if strcoll() is
2052 available to compare strings using collating information.
2054 d_strctcpy (d_strctcpy.U):
2055 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2056 indicates to the C program that this C compiler knows how to copy
2059 d_strerrm (d_strerror.U):
2060 This variable holds what Strerrr is defined as to translate an error
2061 code condition into an error message string. It could be 'strerror'
2062 or a more complex macro emulating strrror with sys_errlist[], or the
2063 "unknown" string when both strerror and sys_errlist are missing.
2065 d_strerror (d_strerror.U):
2066 This variable conditionally defines HAS_STRERROR if strerror() is
2067 available to translate error numbers to strings.
2069 d_strerror_r (d_strerror_r.U):
2070 This variable conditionally defines the HAS_STRERROR_R symbol,
2071 which indicates to the C program that the strerror_r()
2072 routine is available.
2074 d_strftime (d_strftime.U):
2075 This variable conditionally defines the HAS_STRFTIME symbol, which
2076 indicates to the C program that the strftime() routine is available.
2078 d_strlcat (d_strlcat.U):
2079 This variable conditionally defines the HAS_STRLCAT symbol, which
2080 indicates to the C program that the strlcat () routine is available.
2082 d_strlcpy (d_strlcpy.U):
2083 This variable conditionally defines the HAS_STRLCPY symbol, which
2084 indicates to the C program that the strlcpy () routine is available.
2086 d_strtod (d_strtod.U):
2087 This variable conditionally defines the HAS_STRTOD symbol, which
2088 indicates to the C program that the strtod() routine is available
2089 to provide better numeric string conversion than atof().
2091 d_strtol (d_strtol.U):
2092 This variable conditionally defines the HAS_STRTOL symbol, which
2093 indicates to the C program that the strtol() routine is available
2094 to provide better numeric string conversion than atoi() and friends.
2096 d_strtold (d_strtold.U):
2097 This variable conditionally defines the HAS_STRTOLD symbol, which
2098 indicates to the C program that the strtold() routine is available.
2100 d_strtoll (d_strtoll.U):
2101 This variable conditionally defines the HAS_STRTOLL symbol, which
2102 indicates to the C program that the strtoll() routine is available.
2104 d_strtoq (d_strtoq.U):
2105 This variable conditionally defines the HAS_STRTOQ symbol, which
2106 indicates to the C program that the strtoq() routine is available.
2108 d_strtoul (d_strtoul.U):
2109 This variable conditionally defines the HAS_STRTOUL symbol, which
2110 indicates to the C program that the strtoul() routine is available
2111 to provide conversion of strings to unsigned long.
2113 d_strtoull (d_strtoull.U):
2114 This variable conditionally defines the HAS_STRTOULL symbol, which
2115 indicates to the C program that the strtoull() routine is available.
2117 d_strtouq (d_strtouq.U):
2118 This variable conditionally defines the HAS_STRTOUQ symbol, which
2119 indicates to the C program that the strtouq() routine is available.
2121 d_strxfrm (d_strxfrm.U):
2122 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2123 available to transform strings.
2125 d_suidsafe (d_dosuid.U):
2126 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2127 if setuid scripts can be secure. This test looks in /dev/fd/.
2129 d_symlink (d_symlink.U):
2130 This variable conditionally defines the HAS_SYMLINK symbol, which
2131 indicates to the C program that the symlink() routine is available
2132 to create symbolic links.
2134 d_syscall (d_syscall.U):
2135 This variable conditionally defines HAS_SYSCALL if syscall() is
2136 available call arbitrary system calls.
2138 d_syscallproto (d_syscallproto.U):
2139 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2140 which indicates to the C program that the system provides
2141 a prototype for the syscall() function. Otherwise, it is
2142 up to the program to supply one.
2144 d_sysconf (d_sysconf.U):
2145 This variable conditionally defines the HAS_SYSCONF symbol, which
2146 indicates to the C program that the sysconf() routine is available
2147 to determine system related limits and options.
2149 d_sysernlst (d_strerror.U):
2150 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2151 is available to translate error numbers to the symbolic name.
2153 d_syserrlst (d_strerror.U):
2154 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2155 available to translate error numbers to strings.
2157 d_system (d_system.U):
2158 This variable conditionally defines HAS_SYSTEM if system() is
2159 available to issue a shell command.
2161 d_tcgetpgrp (d_tcgtpgrp.U):
2162 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2163 indicates to the C program that the tcgetpgrp() routine is available.
2164 to get foreground process group ID.
2166 d_tcsetpgrp (d_tcstpgrp.U):
2167 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2168 indicates to the C program that the tcsetpgrp() routine is available
2169 to set foreground process group ID.
2171 d_telldir (d_readdir.U):
2172 This variable conditionally defines HAS_TELLDIR if telldir() is
2175 d_telldirproto (d_telldirproto.U):
2176 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2177 which indicates to the C program that the system provides
2178 a prototype for the telldir() function. Otherwise, it is
2179 up to the program to supply one.
2182 This variable conditionally defines the HAS_TIME symbol, which indicates
2183 that the time() routine exists. The time() routine is normaly
2184 provided on UNIX systems.
2186 d_times (d_times.U):
2187 This variable conditionally defines the HAS_TIMES symbol, which indicates
2188 that the times() routine exists. The times() routine is normaly
2189 provided on UNIX systems. You may have to include <sys/times.h>.
2191 d_tm_tm_gmtoff (i_time.U):
2192 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2193 indicates to the C program that the struct tm has the tm_gmtoff field.
2195 d_tm_tm_zone (i_time.U):
2196 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2197 indicates to the C program that the struct tm has the tm_zone field.
2199 d_tmpnam_r (d_tmpnam_r.U):
2200 This variable conditionally defines the HAS_TMPNAM_R symbol,
2201 which indicates to the C program that the tmpnam_r()
2202 routine is available.
2204 d_truncate (d_truncate.U):
2205 This variable conditionally defines HAS_TRUNCATE if truncate() is
2206 available to truncate files.
2208 d_ttyname_r (d_ttyname_r.U):
2209 This variable conditionally defines the HAS_TTYNAME_R symbol,
2210 which indicates to the C program that the ttyname_r()
2211 routine is available.
2213 d_tzname (d_tzname.U):
2214 This variable conditionally defines HAS_TZNAME if tzname[] is
2215 available to access timezone names.
2217 d_u32align (d_u32align.U):
2218 This variable tells whether you must access character data
2219 through U32-aligned pointers.
2221 d_ualarm (d_ualarm.U):
2222 This variable conditionally defines the HAS_UALARM symbol, which
2223 indicates to the C program that the ualarm() routine is available.
2225 d_umask (d_umask.U):
2226 This variable conditionally defines the HAS_UMASK symbol, which
2227 indicates to the C program that the umask() routine is available.
2228 to set and get the value of the file creation mask.
2230 d_uname (d_gethname.U):
2231 This variable conditionally defines the HAS_UNAME symbol, which
2232 indicates to the C program that the uname() routine may be
2233 used to derive the host name.
2235 d_union_semun (d_union_semun.U):
2236 This variable conditionally defines HAS_UNION_SEMUN if the
2237 union semun is defined by including <sys/sem.h>.
2239 d_unordered (d_unordered.U):
2240 This variable conditionally defines the HAS_UNORDERED symbol, which
2241 indicates to the C program that the unordered() routine is available.
2243 d_unsetenv (d_unsetenv.U):
2244 This variable conditionally defines the HAS_UNSETENV symbol, which
2245 indicates to the C program that the unsetenv () routine is available.
2247 d_usleep (d_usleep.U):
2248 This variable conditionally defines HAS_USLEEP if usleep() is
2249 available to do high granularity sleeps.
2251 d_usleepproto (d_usleepproto.U):
2252 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2253 which indicates to the C program that the system provides
2254 a prototype for the usleep() function. Otherwise, it is
2255 up to the program to supply one.
2257 d_ustat (d_ustat.U):
2258 This variable conditionally defines HAS_USTAT if ustat() is
2259 available to query file system statistics by dev_t.
2261 d_vendorarch (vendorarch.U):
2262 This variable conditionally defined PERL_VENDORARCH.
2264 d_vendorbin (vendorbin.U):
2265 This variable conditionally defines PERL_VENDORBIN.
2267 d_vendorlib (vendorlib.U):
2268 This variable conditionally defines PERL_VENDORLIB.
2270 d_vendorscript (vendorscript.U):
2271 This variable conditionally defines PERL_VENDORSCRIPT.
2273 d_vfork (d_vfork.U):
2274 This variable conditionally defines the HAS_VFORK symbol, which
2275 indicates the vfork() routine is available.
2277 d_void_closedir (d_closedir.U):
2278 This variable conditionally defines VOID_CLOSEDIR if closedir()
2279 does not return a value.
2281 d_voidsig (d_voidsig.U):
2282 This variable conditionally defines VOIDSIG if this system
2283 declares "void (*signal(...))()" in signal.h. The old way was to
2284 declare it as "int (*signal(...))()".
2286 d_voidtty (i_sysioctl.U):
2287 This variable conditionally defines USE_IOCNOTTY to indicate that the
2288 ioctl() call with TIOCNOTTY should be used to void tty association.
2289 Otherwise (on USG probably), it is enough to close the standard file
2290 decriptors and do a setpgrp().
2292 d_volatile (d_volatile.U):
2293 This variable conditionally defines the HASVOLATILE symbol, which
2294 indicates to the C program that this C compiler knows about the
2295 volatile declaration.
2297 d_vprintf (d_vprintf.U):
2298 This variable conditionally defines the HAS_VPRINTF symbol, which
2299 indicates to the C program that the vprintf() routine is available
2300 to printf with a pointer to an argument list.
2302 d_vsnprintf (d_snprintf.U):
2303 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2304 indicates to the C program that the vsnprintf () library function
2307 d_wait4 (d_wait4.U):
2308 This variable conditionally defines the HAS_WAIT4 symbol, which
2309 indicates the wait4() routine is available.
2311 d_waitpid (d_waitpid.U):
2312 This variable conditionally defines HAS_WAITPID if waitpid() is
2313 available to wait for child process.
2315 d_wcstombs (d_wcstombs.U):
2316 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2317 indicates to the C program that the wcstombs() routine is available
2318 to convert wide character strings to multibyte strings.
2320 d_wctomb (d_wctomb.U):
2321 This variable conditionally defines the HAS_WCTOMB symbol, which
2322 indicates to the C program that the wctomb() routine is available
2323 to convert a wide character to a multibyte.
2325 d_writev (d_writev.U):
2326 This variable conditionally defines the HAS_WRITEV symbol, which
2327 indicates to the C program that the writev() routine is available.
2330 This variable conditionally defines the symbol XENIX, which alerts
2331 the C program that it runs under Xenix.
2334 This variable is used internally by Configure to determine the
2335 full pathname (if any) of the date program. After Configure runs,
2336 the value is reset to a plain "date" and is not useful.
2338 db_hashtype (i_db.U):
2339 This variable contains the type of the hash structure element
2340 in the <db.h> header file. In older versions of DB, it was
2341 int, while in newer ones it is u_int32_t.
2343 db_prefixtype (i_db.U):
2344 This variable contains the type of the prefix structure element
2345 in the <db.h> header file. In older versions of DB, it was
2346 int, while in newer ones it is size_t.
2348 db_version_major (i_db.U):
2349 This variable contains the major version number of
2350 Berkeley DB found in the <db.h> header file.
2352 db_version_minor (i_db.U):
2353 This variable contains the minor version number of
2354 Berkeley DB found in the <db.h> header file.
2355 For DB version 1 this is always 0.
2357 db_version_patch (i_db.U):
2358 This variable contains the patch version number of
2359 Berkeley DB found in the <db.h> header file.
2360 For DB version 1 this is always 0.
2362 defvoidused (voidflags.U):
2363 This variable contains the default value of the VOIDUSED symbol (15).
2365 direntrytype (i_dirent.U):
2366 This symbol is set to 'struct direct' or 'struct dirent' depending on
2367 whether dirent is available or not. You should use this pseudo type to
2368 portably declare your directory entries.
2371 This variable contains the extension that is to be used for the
2372 dynamically loaded modules that perl generaties.
2375 This variable contains the name of the dynamic loading file that
2376 will be used with the package.
2378 doublesize (doublesize.U):
2379 This variable contains the value of the DOUBLESIZE symbol, which
2380 indicates to the C program how many bytes there are in a double.
2382 drand01 (randfunc.U):
2383 Indicates the macro to be used to generate normalized
2384 random numbers. Uses randfunc, often divided by
2385 (double) (((unsigned long) 1 << randbits)) in order to
2386 normalize the result.
2387 In C programs, the macro 'Drand01' is mapped to drand01.
2389 drand48_r_proto (d_drand48_r.U):
2390 This variable encodes the prototype of drand48_r.
2391 It is zero if d_drand48_r is undef, and one of the
2392 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2395 dynamic_ext (Extensions.U):
2396 This variable holds a list of XS extension files we want to
2397 link dynamically into the package. It is used by Makefile.
2399 eagain (nblock_io.U):
2400 This variable bears the symbolic errno code set by read() when no
2401 data is present on the file and non-blocking I/O was enabled (otherwise,
2402 read() blocks naturally).
2405 This variable conditionally defines EBCDIC if this
2406 system uses EBCDIC encoding. Among other things, this
2407 means that the character ranges are not contiguous.
2411 This variable is used internally by Configure to determine the
2412 full pathname (if any) of the echo program. After Configure runs,
2413 the value is reset to a plain "echo" and is not useful.
2416 This variable is used internally by Configure to determine the
2417 full pathname (if any) of the egrep program. After Configure runs,
2418 the value is reset to a plain "egrep" and is not useful.
2421 This variable is defined but not used by Configure.
2422 The value is a plain '' and is not useful.
2424 endgrent_r_proto (d_endgrent_r.U):
2425 This variable encodes the prototype of endgrent_r.
2426 It is zero if d_endgrent_r is undef, and one of the
2427 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2430 endhostent_r_proto (d_endhostent_r.U):
2431 This variable encodes the prototype of endhostent_r.
2432 It is zero if d_endhostent_r is undef, and one of the
2433 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2436 endnetent_r_proto (d_endnetent_r.U):
2437 This variable encodes the prototype of endnetent_r.
2438 It is zero if d_endnetent_r is undef, and one of the
2439 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2442 endprotoent_r_proto (d_endprotoent_r.U):
2443 This variable encodes the prototype of endprotoent_r.
2444 It is zero if d_endprotoent_r is undef, and one of the
2445 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2448 endpwent_r_proto (d_endpwent_r.U):
2449 This variable encodes the prototype of endpwent_r.
2450 It is zero if d_endpwent_r is undef, and one of the
2451 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2454 endservent_r_proto (d_endservent_r.U):
2455 This variable encodes the prototype of endservent_r.
2456 It is zero if d_endservent_r is undef, and one of the
2457 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2461 When running under Eunice this variable contains a command which will
2462 convert a shell script to the proper form of text file for it to be
2463 executable by the shell. On other systems it is a no-op.
2466 This is an old synonym for _exe.
2469 This variable is used internally by Configure to determine the
2470 full pathname (if any) of the expr program. After Configure runs,
2471 the value is reset to a plain "expr" and is not useful.
2473 extensions (Extensions.U):
2474 This variable holds a list of all extension files (both XS and
2475 non-xs linked into the package. It is propagated to Config.pm
2476 and is typically used to test whether a particular extesion
2480 This variable holds a list of extra modules to install.
2482 fflushall (fflushall.U):
2483 This symbol, if defined, tells that to flush
2484 all pending stdio output one must loop through all
2485 the stdio file handles stored in an array and fflush them.
2486 Note that if fflushNULL is defined, fflushall will not
2487 even be probed for and will be left undefined.
2489 fflushNULL (fflushall.U):
2490 This symbol, if defined, tells that fflush(NULL) does flush
2491 all pending stdio output.
2494 This variable is defined but not used by Configure.
2495 The value is a plain '' and is not useful.
2497 firstmakefile (Unix.U):
2498 This variable defines the first file searched by make. On unix,
2499 it is makefile (then Makefile). On case-insensitive systems,
2500 it might be something else. This is only used to deal with
2501 convoluted make depend tricks.
2504 This variable is defined but not used by Configure.
2505 The value is a plain '' and is not useful.
2507 fpossize (fpossize.U):
2508 This variable contains the size of a fpostype in bytes.
2510 fpostype (fpostype.U):
2511 This variable defines Fpos_t to be something like fpos_t, long,
2512 uint, or whatever type is used to declare file positions in libc.
2514 freetype (mallocsrc.U):
2515 This variable contains the return type of free(). It is usually
2516 void, but occasionally int.
2519 This variable contains the command used by Configure
2520 to copy files from the target host. Useful and available
2521 only during Perl build.
2522 The string ':' if not cross-compiling.
2525 This variable contains the full pathname to 'ar', whether or
2526 not the user has specified 'portability'. This is only used
2530 This variable contains the full pathname to 'csh', whether or
2531 not the user has specified 'portability'. This is only used
2532 in the compiled C program, and we assume that all systems which
2533 can share this executable will have the same full pathname to
2536 full_sed (Loc_sed.U):
2537 This variable contains the full pathname to 'sed', whether or
2538 not the user has specified 'portability'. This is only used
2539 in the compiled C program, and we assume that all systems which
2540 can share this executable will have the same full pathname to
2543 gccansipedantic (gccvers.U):
2544 If GNU cc (gcc) is used, this variable will enable (if set) the
2545 -ansi and -pedantic ccflags for building core files (through
2546 cflags script). (See Porting/pumpkin.pod for full description).
2548 gccosandvers (gccvers.U):
2549 If GNU cc (gcc) is used, this variable holds the operating system
2550 and version used to compile gcc. It is set to '' if not gcc,
2551 or if nothing useful can be parsed as the os version.
2553 gccversion (gccvers.U):
2554 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2555 indicate whether the compiler is version 1 or 2. This is used in
2556 setting some of the default cflags. It is set to '' if not gcc.
2558 getgrent_r_proto (d_getgrent_r.U):
2559 This variable encodes the prototype of getgrent_r.
2560 It is zero if d_getgrent_r is undef, and one of the
2561 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2564 getgrgid_r_proto (d_getgrgid_r.U):
2565 This variable encodes the prototype of getgrgid_r.
2566 It is zero if d_getgrgid_r is undef, and one of the
2567 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2570 getgrnam_r_proto (d_getgrnam_r.U):
2571 This variable encodes the prototype of getgrnam_r.
2572 It is zero if d_getgrnam_r is undef, and one of the
2573 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2576 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2577 This variable encodes the prototype of gethostbyaddr_r.
2578 It is zero if d_gethostbyaddr_r is undef, and one of the
2579 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2582 gethostbyname_r_proto (d_gethostbyname_r.U):
2583 This variable encodes the prototype of gethostbyname_r.
2584 It is zero if d_gethostbyname_r is undef, and one of the
2585 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2588 gethostent_r_proto (d_gethostent_r.U):
2589 This variable encodes the prototype of gethostent_r.
2590 It is zero if d_gethostent_r is undef, and one of the
2591 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2594 getlogin_r_proto (d_getlogin_r.U):
2595 This variable encodes the prototype of getlogin_r.
2596 It is zero if d_getlogin_r is undef, and one of the
2597 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2600 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2601 This variable encodes the prototype of getnetbyaddr_r.
2602 It is zero if d_getnetbyaddr_r is undef, and one of the
2603 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2606 getnetbyname_r_proto (d_getnetbyname_r.U):
2607 This variable encodes the prototype of getnetbyname_r.
2608 It is zero if d_getnetbyname_r is undef, and one of the
2609 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2612 getnetent_r_proto (d_getnetent_r.U):
2613 This variable encodes the prototype of getnetent_r.
2614 It is zero if d_getnetent_r is undef, and one of the
2615 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2618 getprotobyname_r_proto (d_getprotobyname_r.U):
2619 This variable encodes the prototype of getprotobyname_r.
2620 It is zero if d_getprotobyname_r is undef, and one of the
2621 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2624 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2625 This variable encodes the prototype of getprotobynumber_r.
2626 It is zero if d_getprotobynumber_r is undef, and one of the
2627 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2630 getprotoent_r_proto (d_getprotoent_r.U):
2631 This variable encodes the prototype of getprotoent_r.
2632 It is zero if d_getprotoent_r is undef, and one of the
2633 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2636 getpwent_r_proto (d_getpwent_r.U):
2637 This variable encodes the prototype of getpwent_r.
2638 It is zero if d_getpwent_r is undef, and one of the
2639 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2642 getpwnam_r_proto (d_getpwnam_r.U):
2643 This variable encodes the prototype of getpwnam_r.
2644 It is zero if d_getpwnam_r is undef, and one of the
2645 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2648 getpwuid_r_proto (d_getpwuid_r.U):
2649 This variable encodes the prototype of getpwuid_r.
2650 It is zero if d_getpwuid_r is undef, and one of the
2651 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2654 getservbyname_r_proto (d_getservbyname_r.U):
2655 This variable encodes the prototype of getservbyname_r.
2656 It is zero if d_getservbyname_r is undef, and one of the
2657 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2660 getservbyport_r_proto (d_getservbyport_r.U):
2661 This variable encodes the prototype of getservbyport_r.
2662 It is zero if d_getservbyport_r is undef, and one of the
2663 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2666 getservent_r_proto (d_getservent_r.U):
2667 This variable encodes the prototype of getservent_r.
2668 It is zero if d_getservent_r is undef, and one of the
2669 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2672 getspnam_r_proto (d_getspnam_r.U):
2673 This variable encodes the prototype of getspnam_r.
2674 It is zero if d_getspnam_r is undef, and one of the
2675 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2679 This variable contains the format string used for printing a Gid_t.
2681 gidsign (gidsign.U):
2682 This variable contains the signedness of a gidtype.
2683 1 for unsigned, -1 for signed.
2685 gidsize (gidsize.U):
2686 This variable contains the size of a gidtype in bytes.
2688 gidtype (gidtype.U):
2689 This variable defines Gid_t to be something like gid_t, int,
2690 ushort, or whatever type is used to declare the return type
2691 of getgid(). Typically, it is the type of group ids in the kernel.
2694 This variable holds the general path (space-separated) used to
2695 find libraries. It may contain directories that do not exist on
2696 this platform, libpth is the cleaned-up version.
2699 This variable is used internally by Configure to determine the
2700 full pathname (if any) of the gmake program. After Configure runs,
2701 the value is reset to a plain "gmake" and is not useful.
2703 gmtime_r_proto (d_gmtime_r.U):
2704 This variable encodes the prototype of gmtime_r.
2705 It is zero if d_gmtime_r is undef, and one of the
2706 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2709 gnulibc_version (d_gnulibc.U):
2710 This variable contains the version number of the GNU C library.
2711 It is usually something like '2.2.5'. It is a plain '' if this
2712 is not the GNU C library, or if the version is unknown.
2715 This variable is used internally by Configure to determine the
2716 full pathname (if any) of the grep program. After Configure runs,
2717 the value is reset to a plain "grep" and is not useful.
2720 This variable contains a command that produces the text of the
2721 /etc/group file. This is normally "cat /etc/group", but can be
2722 "ypcat group" when NIS is used.
2723 On some systems, such as os390, there may be no equivalent
2724 command, in which case this variable is unset.
2726 groupstype (groupstype.U):
2727 This variable defines Groups_t to be something like gid_t, int,
2728 ushort, or whatever type is used for the second argument to
2729 getgroups() and setgroups(). Usually, this is the same as
2730 gidtype (gid_t), but sometimes it isn't.
2733 This variable is used internally by Configure to determine the
2734 full pathname (if any) of the gzip program. After Configure runs,
2735 the value is reset to a plain "gzip" and is not useful.
2737 h_fcntl (h_fcntl.U):
2738 This is variable gets set in various places to tell i_fcntl that
2739 <fcntl.h> should be included.
2741 h_sysfile (h_sysfile.U):
2742 This is variable gets set in various places to tell i_sys_file that
2743 <sys/file.h> should be included.
2746 Gives the type of hints used for previous answers. May be one of
2747 "default", "recommended" or "previous".
2750 This variable contains a command that produces the text of the
2751 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2752 "ypcat hosts" when NIS is used.
2753 On some systems, such as os390, there may be no equivalent
2754 command, in which case this variable is unset.
2756 html1dir (html1dir.U):
2757 This variable contains the name of the directory in which html
2758 source pages are to be put. This directory is for pages
2759 that describe whole programs, not libraries or modules. It
2760 is intended to correspond roughly to section 1 of the Unix
2763 html1direxp (html1dir.U):
2764 This variable is the same as the html1dir variable, but is filename
2765 expanded at configuration time, for convenient use in makefiles.
2767 html3dir (html3dir.U):
2768 This variable contains the name of the directory in which html
2769 source pages are to be put. This directory is for pages
2770 that describe libraries or modules. It is intended to
2771 correspond roughly to section 3 of the Unix manuals.
2773 html3direxp (html3dir.U):
2774 This variable is the same as the html3dir variable, but is filename
2775 expanded at configuration time, for convenient use in makefiles.
2778 This variable is the size of an I16 in bytes.
2781 This variable contains the C type used for Perl's I16.
2784 This variable is the size of an I32 in bytes.
2787 This variable contains the C type used for Perl's I32.
2790 This variable is the size of an I64 in bytes.
2793 This variable contains the C type used for Perl's I64.
2796 This variable is the size of an I8 in bytes.
2799 This variable contains the C type used for Perl's I8.
2801 i_arpainet (i_arpainet.U):
2802 This variable conditionally defines the I_ARPA_INET symbol,
2803 and indicates whether a C program should include <arpa/inet.h>.
2805 i_bsdioctl (i_sysioctl.U):
2806 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2807 indicates to the C program that <sys/bsdioctl.h> exists and should
2810 i_crypt (i_crypt.U):
2811 This variable conditionally defines the I_CRYPT symbol, and indicates
2812 whether a C program should include <crypt.h>.
2815 This variable conditionally defines the I_DB symbol, and indicates
2816 whether a C program may include Berkeley's DB include file <db.h>.
2819 This variable conditionally defines the I_DBM symbol, which
2820 indicates to the C program that <dbm.h> exists and should
2823 i_dirent (i_dirent.U):
2824 This variable conditionally defines I_DIRENT, which indicates
2825 to the C program that it should include <dirent.h>.
2828 This variable conditionally defines the I_DLD symbol, which
2829 indicates to the C program that <dld.h> (GNU dynamic loading)
2830 exists and should be included.
2832 i_dlfcn (i_dlfcn.U):
2833 This variable conditionally defines the I_DLFCN symbol, which
2834 indicates to the C program that <dlfcn.h> exists and should
2837 i_fcntl (i_fcntl.U):
2838 This variable controls the value of I_FCNTL (which tells
2839 the C program to include <fcntl.h>).
2841 i_float (i_float.U):
2842 This variable conditionally defines the I_FLOAT symbol, and indicates
2843 whether a C program may include <float.h> to get symbols like DBL_MAX
2844 or DBL_MIN, i.e. machine dependent floating point values.
2847 This variable conditionally defines the I_FP symbol, and indicates
2848 whether a C program should include <fp.h>.
2850 i_fp_class (i_fp_class.U):
2851 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2852 whether a C program should include <fp_class.h>.
2855 This variable conditionally defines the I_GDBM symbol, which
2856 indicates to the C program that <gdbm.h> exists and should
2860 This variable conditionally defines the I_GRP symbol, and indicates
2861 whether a C program should include <grp.h>.
2863 i_ieeefp (i_ieeefp.U):
2864 This variable conditionally defines the I_IEEEFP symbol, and indicates
2865 whether a C program should include <ieeefp.h>.
2867 i_inttypes (i_inttypes.U):
2868 This variable conditionally defines the I_INTTYPES symbol,
2869 and indicates whether a C program should include <inttypes.h>.
2871 i_langinfo (i_langinfo.U):
2872 This variable conditionally defines the I_LANGINFO symbol,
2873 and indicates whether a C program should include <langinfo.h>.
2875 i_libutil (i_libutil.U):
2876 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2877 whether a C program should include <libutil.h>.
2879 i_limits (i_limits.U):
2880 This variable conditionally defines the I_LIMITS symbol, and indicates
2881 whether a C program may include <limits.h> to get symbols like WORD_BIT
2884 i_locale (i_locale.U):
2885 This variable conditionally defines the I_LOCALE symbol,
2886 and indicates whether a C program should include <locale.h>.
2888 i_machcthr (i_machcthr.U):
2889 This variable conditionally defines the I_MACH_CTHREADS symbol,
2890 and indicates whether a C program should include <mach/cthreads.h>.
2892 i_malloc (i_malloc.U):
2893 This variable conditionally defines the I_MALLOC symbol, and indicates
2894 whether a C program should include <malloc.h>.
2897 This variable conditionally defines the I_MATH symbol, and indicates
2898 whether a C program may include <math.h>.
2900 i_memory (i_memory.U):
2901 This variable conditionally defines the I_MEMORY symbol, and indicates
2902 whether a C program should include <memory.h>.
2904 i_mntent (i_mntent.U):
2905 This variable conditionally defines the I_MNTENT symbol, and indicates
2906 whether a C program should include <mntent.h>.
2909 This variable conditionally defines the I_NDBM symbol, which
2910 indicates to the C program that <ndbm.h> exists and should
2913 i_netdb (i_netdb.U):
2914 This variable conditionally defines the I_NETDB symbol, and indicates
2915 whether a C program should include <netdb.h>.
2917 i_neterrno (i_neterrno.U):
2918 This variable conditionally defines the I_NET_ERRNO symbol, which
2919 indicates to the C program that <net/errno.h> exists and should
2922 i_netinettcp (i_netinettcp.U):
2923 This variable conditionally defines the I_NETINET_TCP symbol,
2924 and indicates whether a C program should include <netinet/tcp.h>.
2927 This variable conditionally defines I_NETINET_IN, which indicates
2928 to the C program that it should include <netinet/in.h>. Otherwise,
2929 you may try <sys/in.h>.
2932 This variable conditionally defines the I_POLL symbol, and indicates
2933 whether a C program should include <poll.h>.
2936 This variable conditionally defines the I_PROT symbol, and indicates
2937 whether a C program should include <prot.h>.
2939 i_pthread (i_pthread.U):
2940 This variable conditionally defines the I_PTHREAD symbol,
2941 and indicates whether a C program should include <pthread.h>.
2944 This variable conditionally defines I_PWD, which indicates
2945 to the C program that it should include <pwd.h>.
2947 i_rpcsvcdbm (i_dbm.U):
2948 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2949 indicates to the C program that <rpcsvc/dbm.h> exists and should
2950 be included. Some System V systems might need this instead of <dbm.h>.
2953 This variable conditionally defines the I_SFIO symbol,
2954 and indicates whether a C program should include <sfio.h>.
2956 i_sgtty (i_termio.U):
2957 This variable conditionally defines the I_SGTTY symbol, which
2958 indicates to the C program that it should include <sgtty.h> rather
2961 i_shadow (i_shadow.U):
2962 This variable conditionally defines the I_SHADOW symbol, and indicates
2963 whether a C program should include <shadow.h>.
2965 i_socks (i_socks.U):
2966 This variable conditionally defines the I_SOCKS symbol, and indicates
2967 whether a C program should include <socks.h>.
2969 i_stdarg (i_varhdr.U):
2970 This variable conditionally defines the I_STDARG symbol, which
2971 indicates to the C program that <stdarg.h> exists and should
2974 i_stddef (i_stddef.U):
2975 This variable conditionally defines the I_STDDEF symbol, which
2976 indicates to the C program that <stddef.h> exists and should
2979 i_stdlib (i_stdlib.U):
2980 This variable conditionally defines the I_STDLIB symbol, which
2981 indicates to the C program that <stdlib.h> exists and should
2984 i_string (i_string.U):
2985 This variable conditionally defines the I_STRING symbol, which
2986 indicates that <string.h> should be included rather than <strings.h>.
2988 i_sunmath (i_sunmath.U):
2989 This variable conditionally defines the I_SUNMATH symbol, and indicates
2990 whether a C program should include <sunmath.h>.
2992 i_sysaccess (i_sysaccess.U):
2993 This variable conditionally defines the I_SYS_ACCESS symbol,
2994 and indicates whether a C program should include <sys/access.h>.
2996 i_sysdir (i_sysdir.U):
2997 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2998 whether a C program should include <sys/dir.h>.
3000 i_sysfile (i_sysfile.U):
3001 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3002 whether a C program should include <sys/file.h> to get R_OK and friends.
3004 i_sysfilio (i_sysioctl.U):
3005 This variable conditionally defines the I_SYS_FILIO symbol, which
3006 indicates to the C program that <sys/filio.h> exists and should
3007 be included in preference to <sys/ioctl.h>.
3010 This variable conditionally defines I_SYS_IN, which indicates
3011 to the C program that it should include <sys/in.h> instead of
3014 i_sysioctl (i_sysioctl.U):
3015 This variable conditionally defines the I_SYS_IOCTL symbol, which
3016 indicates to the C program that <sys/ioctl.h> exists and should
3019 i_syslog (i_syslog.U):
3020 This variable conditionally defines the I_SYSLOG symbol,
3021 and indicates whether a C program should include <syslog.h>.
3023 i_sysmman (i_sysmman.U):
3024 This variable conditionally defines the I_SYS_MMAN symbol, and
3025 indicates whether a C program should include <sys/mman.h>.
3027 i_sysmode (i_sysmode.U):
3028 This variable conditionally defines the I_SYSMODE symbol,
3029 and indicates whether a C program should include <sys/mode.h>.
3031 i_sysmount (i_sysmount.U):
3032 This variable conditionally defines the I_SYSMOUNT symbol,
3033 and indicates whether a C program should include <sys/mount.h>.
3035 i_sysndir (i_sysndir.U):
3036 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3037 whether a C program should include <sys/ndir.h>.
3039 i_sysparam (i_sysparam.U):
3040 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3041 whether a C program should include <sys/param.h>.
3043 i_sysresrc (i_sysresrc.U):
3044 This variable conditionally defines the I_SYS_RESOURCE symbol,
3045 and indicates whether a C program should include <sys/resource.h>.
3047 i_syssecrt (i_syssecrt.U):
3048 This variable conditionally defines the I_SYS_SECURITY symbol,
3049 and indicates whether a C program should include <sys/security.h>.
3051 i_sysselct (i_sysselct.U):
3052 This variable conditionally defines I_SYS_SELECT, which indicates
3053 to the C program that it should include <sys/select.h> in order to
3054 get the definition of struct timeval.
3056 i_syssockio (i_sysioctl.U):
3057 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3058 C program that socket ioctl codes may be found in <sys/sockio.h>
3059 instead of <sys/ioctl.h>.
3061 i_sysstat (i_sysstat.U):
3062 This variable conditionally defines the I_SYS_STAT symbol,
3063 and indicates whether a C program should include <sys/stat.h>.
3065 i_sysstatfs (i_sysstatfs.U):
3066 This variable conditionally defines the I_SYSSTATFS symbol,
3067 and indicates whether a C program should include <sys/statfs.h>.
3069 i_sysstatvfs (i_sysstatvfs.U):
3070 This variable conditionally defines the I_SYSSTATVFS symbol,
3071 and indicates whether a C program should include <sys/statvfs.h>.
3073 i_systime (i_time.U):
3074 This variable conditionally defines I_SYS_TIME, which indicates
3075 to the C program that it should include <sys/time.h>.
3077 i_systimek (i_time.U):
3078 This variable conditionally defines I_SYS_TIME_KERNEL, which
3079 indicates to the C program that it should include <sys/time.h>
3080 with KERNEL defined.
3082 i_systimes (i_systimes.U):
3083 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3084 whether a C program should include <sys/times.h>.
3086 i_systypes (i_systypes.U):
3087 This variable conditionally defines the I_SYS_TYPES symbol,
3088 and indicates whether a C program should include <sys/types.h>.
3090 i_sysuio (i_sysuio.U):
3091 This variable conditionally defines the I_SYSUIO symbol, and indicates
3092 whether a C program should include <sys/uio.h>.
3094 i_sysun (i_sysun.U):
3095 This variable conditionally defines I_SYS_UN, which indicates
3096 to the C program that it should include <sys/un.h> to get UNIX
3097 domain socket definitions.
3099 i_sysutsname (i_sysutsname.U):
3100 This variable conditionally defines the I_SYSUTSNAME symbol,
3101 and indicates whether a C program should include <sys/utsname.h>.
3103 i_sysvfs (i_sysvfs.U):
3104 This variable conditionally defines the I_SYSVFS symbol,
3105 and indicates whether a C program should include <sys/vfs.h>.
3107 i_syswait (i_syswait.U):
3108 This variable conditionally defines I_SYS_WAIT, which indicates
3109 to the C program that it should include <sys/wait.h>.
3111 i_termio (i_termio.U):
3112 This variable conditionally defines the I_TERMIO symbol, which
3113 indicates to the C program that it should include <termio.h> rather
3116 i_termios (i_termio.U):
3117 This variable conditionally defines the I_TERMIOS symbol, which
3118 indicates to the C program that the POSIX <termios.h> file is
3122 This variable conditionally defines I_TIME, which indicates
3123 to the C program that it should include <time.h>.
3125 i_unistd (i_unistd.U):
3126 This variable conditionally defines the I_UNISTD symbol, and indicates
3127 whether a C program should include <unistd.h>.
3129 i_ustat (i_ustat.U):
3130 This variable conditionally defines the I_USTAT symbol, and indicates
3131 whether a C program should include <ustat.h>.
3133 i_utime (i_utime.U):
3134 This variable conditionally defines the I_UTIME symbol, and indicates
3135 whether a C program should include <utime.h>.
3137 i_values (i_values.U):
3138 This variable conditionally defines the I_VALUES symbol, and indicates
3139 whether a C program may include <values.h> to get symbols like MAXLONG
3142 i_varargs (i_varhdr.U):
3143 This variable conditionally defines I_VARARGS, which indicates
3144 to the C program that it should include <varargs.h>.
3146 i_varhdr (i_varhdr.U):
3147 Contains the name of the header to be included to get va_dcl definition.
3148 Typically one of varargs.h or stdarg.h.
3150 i_vfork (i_vfork.U):
3151 This variable conditionally defines the I_VFORK symbol, and indicates
3152 whether a C program should include vfork.h.
3154 ignore_versioned_solibs (libs.U):
3155 This variable should be non-empty if non-versioned shared
3156 libraries (libfoo.so.x.y) are to be ignored (because they
3157 cannot be linked against).
3159 inc_version_list (inc_version_list.U):
3160 This variable specifies the list of subdirectories in over
3161 which perl.c:incpush() and lib/lib.pm will automatically
3162 search when adding directories to @INC. The elements in
3163 the list are separated by spaces. This is only useful
3164 if you have a perl library directory tree structured like the
3165 default one. See INSTALL for how this works. The versioned
3166 site_perl directory was introduced in 5.005, so that is the
3167 lowest possible value.
3169 This list includes architecture-dependent directories back to
3170 version $api_versionstring (e.g. 5.5.640) and
3171 architecture-independent directories all the way back to
3174 inc_version_list_init (inc_version_list.U):
3175 This variable holds the same list as inc_version_list, but
3176 each item is enclosed in double quotes and separated by commas,
3177 suitable for use in the PERL_INC_VERSION_LIST initialization.
3180 This variable must preceed the normal include path to get hte
3181 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3182 Value can be "" or "/bsd43" on mips.
3185 This variable is defined but not used by Configure.
3186 The value is a plain '' and is not useful.
3188 initialinstalllocation (bin.U):
3189 When userelocatableinc is true, this variable holds the location
3190 that make install should copy the perl binary to, with all the
3191 run-time relocatable paths calculated from this at install time.
3192 When used, it is initialised to the original value of binexp, and
3193 then binexp is set to '.../', as the other binaries are found
3194 relative to the perl binary.
3196 installarchlib (archlib.U):
3197 This variable is really the same as archlibexp but may differ on
3198 those systems using AFS. For extra portability, only this variable
3199 should be used in makefiles.
3202 This variable is the same as binexp unless AFS is running in which case
3203 the user is explicitely prompted for it. This variable should always
3204 be used in your makefiles for maximum portability.
3206 installhtml1dir (html1dir.U):
3207 This variable is really the same as html1direxp, unless you are
3208 using a different installprefix. For extra portability, you
3209 should only use this variable within your makefiles.
3211 installhtml3dir (html3dir.U):
3212 This variable is really the same as html3direxp, unless you are
3213 using a different installprefix. For extra portability, you
3214 should only use this variable within your makefiles.
3216 installman1dir (man1dir.U):
3217 This variable is really the same as man1direxp, unless you are using
3218 AFS in which case it points to the read/write location whereas
3219 man1direxp only points to the read-only access location. For extra
3220 portability, you should only use this variable within your makefiles.
3222 installman3dir (man3dir.U):
3223 This variable is really the same as man3direxp, unless you are using
3224 AFS in which case it points to the read/write location whereas
3225 man3direxp only points to the read-only access location. For extra
3226 portability, you should only use this variable within your makefiles.
3228 installprefix (installprefix.U):
3229 This variable holds the name of the directory below which
3230 "make install" will install the package. For most users, this
3231 is the same as prefix. However, it is useful for
3232 installing the software into a different (usually temporary)
3233 location after which it can be bundled up and moved somehow
3234 to the final location specified by prefix.
3236 installprefixexp (installprefix.U):
3237 This variable holds the full absolute path of installprefix
3238 with all ~-expansion done.
3240 installprivlib (privlib.U):
3241 This variable is really the same as privlibexp but may differ on
3242 those systems using AFS. For extra portability, only this variable
3243 should be used in makefiles.
3245 installscript (scriptdir.U):
3246 This variable is usually the same as scriptdirexp, unless you are on
3247 a system running AFS, in which case they may differ slightly. You
3248 should always use this variable within your makefiles for portability.
3250 installsitearch (sitearch.U):
3251 This variable is really the same as sitearchexp but may differ on
3252 those systems using AFS. For extra portability, only this variable
3253 should be used in makefiles.
3255 installsitebin (sitebin.U):
3256 This variable is usually the same as sitebinexp, unless you are on
3257 a system running AFS, in which case they may differ slightly. You
3258 should always use this variable within your makefiles for portability.
3260 installsitehtml1dir (sitehtml1dir.U):
3261 This variable is really the same as sitehtml1direxp, unless you are using
3262 AFS in which case it points to the read/write location whereas
3263 html1direxp only points to the read-only access location. For extra
3264 portability, you should only use this variable within your makefiles.
3266 installsitehtml3dir (sitehtml3dir.U):
3267 This variable is really the same as sitehtml3direxp, unless you are using
3268 AFS in which case it points to the read/write location whereas
3269 html3direxp only points to the read-only access location. For extra
3270 portability, you should only use this variable within your makefiles.
3272 installsitelib (sitelib.U):
3273 This variable is really the same as sitelibexp but may differ on
3274 those systems using AFS. For extra portability, only this variable
3275 should be used in makefiles.
3277 installsiteman1dir (siteman1dir.U):
3278 This variable is really the same as siteman1direxp, unless you are using
3279 AFS in which case it points to the read/write location whereas
3280 man1direxp only points to the read-only access location. For extra
3281 portability, you should only use this variable within your makefiles.
3283 installsiteman3dir (siteman3dir.U):
3284 This variable is really the same as siteman3direxp, unless you are using
3285 AFS in which case it points to the read/write location whereas
3286 man3direxp only points to the read-only access location. For extra
3287 portability, you should only use this variable within your makefiles.
3289 installsitescript (sitescript.U):
3290 This variable is usually the same as sitescriptexp, unless you are on
3291 a system running AFS, in which case they may differ slightly. You
3292 should always use this variable within your makefiles for portability.
3294 installstyle (installstyle.U):
3295 This variable describes the "style" of the perl installation.
3296 This is intended to be useful for tools that need to
3297 manipulate entire perl distributions. Perl itself doesn't use
3298 this to find its libraries -- the library directories are
3299 stored directly in Config.pm. Currently, there are only two
3300 styles: "lib" and "lib/perl5". The default library locations
3301 (e.g. privlib, sitelib) are either $prefix/lib or
3302 $prefix/lib/perl5. The former is useful if $prefix is a
3303 directory dedicated to perl (e.g. /opt/perl), while the latter
3304 is useful if $prefix is shared by many packages, e.g. if
3307 Unfortunately, while this "style" variable is used to set
3308 defaults for all three directory hierarchies (core, vendor, and
3309 site), there is no guarantee that the same style is actually
3310 appropriate for all those directories. For example, $prefix
3311 might be /opt/perl, but $siteprefix might be /usr/local.
3312 (Perhaps, in retrospect, the "lib" style should never have been
3313 supported, but it did seem like a nice idea at the time.)
3315 The situation is even less clear for tools such as MakeMaker
3316 that can be used to install additional modules into
3317 non-standard places. For example, if a user intends to install
3318 a module into a private directory (perhaps by setting PREFIX on
3319 the Makefile.PL command line), then there is no reason to
3320 assume that the Configure-time $installstyle setting will be
3321 relevant for that PREFIX.
3323 This may later be extended to include other information, so
3324 be careful with pattern-matching on the results.
3326 For compatibility with perl5.005 and earlier, the default
3327 setting is based on whether or not $prefix contains the string
3330 installusrbinperl (instubperl.U):
3331 This variable tells whether Perl should be installed also as
3332 /usr/bin/perl in addition to
3335 installvendorarch (vendorarch.U):
3336 This variable is really the same as vendorarchexp but may differ on
3337 those systems using AFS. For extra portability, only this variable
3338 should be used in makefiles.
3340 installvendorbin (vendorbin.U):
3341 This variable is really the same as vendorbinexp but may differ on
3342 those systems using AFS. For extra portability, only this variable
3343 should be used in makefiles.
3345 installvendorhtml1dir (vendorhtml1dir.U):
3346 This variable is really the same as vendorhtml1direxp but may differ on
3347 those systems using AFS. For extra portability, only this variable
3348 should be used in makefiles.
3350 installvendorhtml3dir (vendorhtml3dir.U):
3351 This variable is really the same as vendorhtml3direxp but may differ on
3352 those systems using AFS. For extra portability, only this variable
3353 should be used in makefiles.
3355 installvendorlib (vendorlib.U):
3356 This variable is really the same as vendorlibexp but may differ on
3357 those systems using AFS. For extra portability, only this variable
3358 should be used in makefiles.
3360 installvendorman1dir (vendorman1dir.U):
3361 This variable is really the same as vendorman1direxp but may differ on
3362 those systems using AFS. For extra portability, only this variable
3363 should be used in makefiles.
3365 installvendorman3dir (vendorman3dir.U):
3366 This variable is really the same as vendorman3direxp but may differ on
3367 those systems using AFS. For extra portability, only this variable
3368 should be used in makefiles.
3370 installvendorscript (vendorscript.U):
3371 This variable is really the same as vendorscriptexp but may differ on
3372 those systems using AFS. For extra portability, only this variable
3373 should be used in makefiles.
3375 intsize (intsize.U):
3376 This variable contains the value of the INTSIZE symbol, which
3377 indicates to the C program how many bytes there are in an int.
3379 issymlink (issymlink.U):
3380 This variable holds the test command to test for a symbolic link
3381 (if they are supported). Typical values include 'test -h' and
3384 ivdformat (perlxvf.U):
3385 This variable contains the format string used for printing
3386 a Perl IV as a signed decimal integer.
3389 This variable is the size of an IV in bytes.
3392 This variable contains the C type used for Perl's IV.
3394 known_extensions (Extensions.U):
3395 This variable holds a list of all XS extensions included in
3399 This variable is defined but not used by Configure.
3400 The value is a plain '' and is not useful.
3403 This variable indicates the program to be used to link
3404 libraries for dynamic loading. On some systems, it is 'ld'.
3405 On ELF systems, it should be $cc. Mostly, we'll try to respect
3406 the hint file setting.
3408 lddlflags (dlsrc.U):
3409 This variable contains any special flags that might need to be
3410 passed to $ld to create a shared library suitable for dynamic
3411 loading. It is up to the makefile to use it. For hpux, it
3412 should be '-b'. For sunos 4.1, it is empty.
3414 ldflags (ccflags.U):
3415 This variable contains any additional C loader flags desired by
3416 the user. It is up to the Makefile to use this.
3418 ldflags_uselargefiles (uselfs.U):
3419 This variable contains the loader flags needed by large file builds
3420 and added to ldflags by hints files.
3422 ldlibpthname (libperl.U):
3423 This variable holds the name of the shared library
3424 search path, often LD_LIBRARY_PATH. To get an empty
3425 string, the hints file must set this to 'none'.
3428 This variable is used internally by Configure to determine the
3429 full pathname (if any) of the less program. After Configure runs,
3430 the value is reset to a plain "less" and is not useful.
3433 This is an old synonym for _a.
3436 This variable contains the location of the C library.
3438 libperl (libperl.U):
3439 The perl executable is obtained by linking perlmain.c with
3440 libperl, any static extensions (usually just DynaLoader),
3441 and any other libraries needed on this system. libperl
3442 is usually libperl.a, but can also be libperl.so.xxx if
3443 the user wishes to build a perl executable with a shared
3447 This variable holds the general path (space-separated) used to find
3448 libraries. It is intended to be used by other units.
3451 This variable holds the additional libraries we want to use.
3452 It is up to the Makefile to deal with it. The list can be empty.
3455 This variable holds the directory names aka dirnames of the libraries
3456 we found and accepted, duplicates are removed.
3459 This variable holds the filenames aka basenames of the libraries
3460 we found and accepted.
3463 This variable holds the full pathnames of the libraries
3464 we found and accepted.
3467 This variable holds the directory names probed for libraries.
3469 libswanted (Myinit.U):
3470 This variable holds a list of all the libraries we want to
3471 search. The order is chosen to pick up the c library
3472 ahead of ucb or bsd libraries for SVR4.
3474 libswanted_uselargefiles (uselfs.U):
3475 This variable contains the libraries needed by large file builds
3476 and added to ldflags by hints files. It is a space separated list
3477 of the library names without the "lib" prefix or any suffix, just
3481 This variable is defined but not used by Configure.
3482 The value is a plain '' and is not useful.
3485 This variable is defined but not used by Configure.
3486 The value is a plain '' and is not useful.
3488 lkflags (ccflags.U):
3489 This variable contains any additional C partial linker flags desired by
3490 the user. It is up to the Makefile to use this.
3493 This variable is used internally by Configure to determine the
3494 full pathname (if any) of the ln program. After Configure runs,
3495 the value is reset to a plain "ln" and is not useful.
3498 This variable holds the name of the command to make
3499 symbolic links (if they are supported). It can be used
3500 in the Makefile. It is either 'ln -s' or 'ln'
3502 localtime_r_proto (d_localtime_r.U):
3503 This variable encodes the prototype of localtime_r.
3504 It is zero if d_localtime_r is undef, and one of the
3505 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3508 locincpth (ccflags.U):
3509 This variable contains a list of additional directories to be
3510 searched by the compiler. The appropriate '-I' directives will
3511 be added to ccflags. This is intended to simplify setting
3512 local directories from the Configure command line.
3513 It's not much, but it parallels the loclibpth stuff in libpth.U.
3515 loclibpth (libpth.U):
3516 This variable holds the paths (space-separated) used to find local
3517 libraries. It is prepended to libpth, and is intended to be easily
3518 set from the command line.
3520 longdblsize (d_longdbl.U):
3521 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3522 indicates to the C program how many bytes there are in a long double,
3523 if this system supports long doubles.
3525 longlongsize (d_longlong.U):
3526 This variable contains the value of the LONGLONGSIZE symbol, which
3527 indicates to the C program how many bytes there are in a long long,
3528 if this system supports long long.
3530 longsize (intsize.U):
3531 This variable contains the value of the LONGSIZE symbol, which
3532 indicates to the C program how many bytes there are in a long.
3535 This variable is defined but not used by Configure.
3536 The value is a plain '' and is not useful.
3539 This variable is defined but not used by Configure.
3540 The value is a plain '' and is not useful.
3543 This variable is used internally by Configure to determine the
3544 full pathname (if any) of the ls program. After Configure runs,
3545 the value is reset to a plain "ls" and is not useful.
3547 lseeksize (lseektype.U):
3548 This variable defines lseektype to be something like off_t, long,
3549 or whatever type is used to declare lseek offset's type in the
3550 kernel (which also appears to be lseek's return type).
3552 lseektype (lseektype.U):
3553 This variable defines lseektype to be something like off_t, long,
3554 or whatever type is used to declare lseek offset's type in the
3555 kernel (which also appears to be lseek's return type).
3558 This variable indicates that the Misc Attribute Definition code is to
3562 If the Misc Attribute Decoration is to be compiled, this variable is
3563 set to the name of the extra header files to be used, else it is ''
3566 If the Misc Attribute Decoration is to be compiled, this variable is
3567 set to the name of the extra object files to be used, else it is ''
3570 If the Misc Attribute Decoration is to be compiled, this variable is
3571 set to the name of the extra C source files to be used, else it is ''
3574 This variable is defined but not used by Configure.
3575 The value is a plain '' and is not useful.
3578 This variable is defined but not used by Configure.
3579 The value is a plain '' and is not useful.
3582 This variable is used internally by Configure to determine the
3583 full pathname (if any) of the make program. After Configure runs,
3584 the value is reset to a plain "make" and is not useful.
3586 make_set_make (make.U):
3587 Some versions of 'make' set the variable MAKE. Others do not.
3588 This variable contains the string to be included in Makefile.SH
3589 so that MAKE is set if needed, and not if not needed.
3590 Possible values are:
3592 make_set_make='#' # If your make program handles this for you,
3594 make_set_make="MAKE=$make" # if it doesn't.
3596 This uses a comment character to distinguish a
3597 'set' value (from a previous config.sh or Configure '-D' option)
3598 from an uncomputed value.
3600 mallocobj (mallocsrc.U):
3601 This variable contains the name of the malloc.o that this package
3602 generates, if that malloc.o is preferred over the system malloc.
3603 Otherwise the value is null. This variable is intended for generating
3604 Makefiles. See mallocsrc.
3606 mallocsrc (mallocsrc.U):
3607 This variable contains the name of the malloc.c that comes with
3608 the package, if that malloc.c is preferred over the system malloc.
3609 Otherwise the value is null. This variable is intended for generating
3612 malloctype (mallocsrc.U):
3613 This variable contains the kind of ptr returned by malloc and realloc.
3615 man1dir (man1dir.U):
3616 This variable contains the name of the directory in which manual
3617 source pages are to be put. It is the responsibility of the
3618 Makefile.SH to get the value of this into the proper command.
3619 You must be prepared to do the ~name expansion yourself.
3621 man1direxp (man1dir.U):
3622 This variable is the same as the man1dir variable, but is filename
3623 expanded at configuration time, for convenient use in makefiles.
3625 man1ext (man1dir.U):
3626 This variable contains the extension that the manual page should
3627 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3630 man3dir (man3dir.U):
3631 This variable contains the name of the directory in which manual
3632 source pages are to be put. It is the responsibility of the
3633 Makefile.SH to get the value of this into the proper command.
3634 You must be prepared to do the ~name expansion yourself.
3636 man3direxp (man3dir.U):
3637 This variable is the same as the man3dir variable, but is filename
3638 expanded at configuration time, for convenient use in makefiles.
3640 man3ext (man3dir.U):
3641 This variable contains the extension that the manual page should
3642 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3646 This variable is used internally by Configure to determine the
3647 full pathname (if any) of the Mcc program. After Configure runs,
3648 the value is reset to a plain "Mcc" and is not useful.
3650 mips_type (usrinc.U):
3651 This variable holds the environment type for the mips system.
3652 Possible values are "BSD 4.3" and "System V".
3654 mistrustnm (Csym.U):
3655 This variable can be used to establish a fallthrough for the cases
3656 where nm fails to find a symbol. If usenm is false or usenm is true
3657 and mistrustnm is false, this variable has no effect. If usenm is true
3658 and mistrustnm is "compile", a test program will be compiled to try to
3659 find any symbol that can't be located via nm lookup. If mistrustnm is
3660 "run", the test program will be run as well as being compiled.
3663 This variable is used internally by Configure to determine the
3664 full pathname (if any) of the mkdir program. After Configure runs,
3665 the value is reset to a plain "mkdir" and is not useful.
3667 mmaptype (d_mmap.U):
3668 This symbol contains the type of pointer returned by mmap()
3669 (and simultaneously the type of the first argument).
3670 It can be 'void *' or 'caddr_t'.
3672 modetype (modetype.U):
3673 This variable defines modetype to be something like mode_t,
3674 int, unsigned short, or whatever type is used to declare file
3675 modes for system calls.
3678 This variable is used internally by Configure to determine the
3679 full pathname (if any) of the more program. After Configure runs,
3680 the value is reset to a plain "more" and is not useful.
3682 multiarch (multiarch.U):
3683 This variable conditionally defines the MULTIARCH symbol
3684 which signifies the presence of multiplatform files.
3685 This is normally set by hints files.
3688 This variable is defined but not used by Configure.
3689 The value is a plain '' and is not useful.
3691 myarchname (archname.U):
3692 This variable holds the architecture name computed by Configure in
3693 a previous run. It is not intended to be perused by any user and
3694 should never be set in a hint file.
3696 mydomain (myhostname.U):
3697 This variable contains the eventual value of the MYDOMAIN symbol,
3698 which is the domain of the host the program is going to run on.
3699 The domain must be appended to myhostname to form a complete host name.
3700 The dot comes with mydomain, and need not be supplied by the program.
3702 myhostname (myhostname.U):
3703 This variable contains the eventual value of the MYHOSTNAME symbol,
3704 which is the name of the host the program is going to run on.
3705 The domain is not kept with hostname, but must be gotten from mydomain.
3706 The dot comes with mydomain, and need not be supplied by the program.
3708 myuname (Oldconfig.U):
3709 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3710 pseudo variables assignments in the output are stripped, thank you. The
3711 whole thing is then lower-cased.
3714 This variable contains the '-n' flag if that is what causes the echo
3715 command to suppress newline. Otherwise it is null. Correct usage is
3716 $echo $n "prompt for a question: $c".
3718 need_va_copy (need_va_copy.U):
3719 This symbol, if defined, indicates that the system stores
3720 the variable argument list datatype, va_list, in a format
3721 that cannot be copied by simple assignment, so that some
3722 other means must be used when copying is required.
3723 As such systems vary in their provision (or non-provision)
3724 of copying mechanisms, handy.h defines a platform-
3725 independent macro, Perl_va_copy(src, dst), to do the job.
3727 netdb_hlen_type (netdbtype.U):
3728 This variable holds the type used for the 2nd argument to
3729 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3730 This is only useful if you have gethostbyaddr(), naturally.
3732 netdb_host_type (netdbtype.U):
3733 This variable holds the type used for the 1st argument to
3734 gethostbyaddr(). Usually, this is char * or void *, possibly
3735 with or without a const prefix.
3736 This is only useful if you have gethostbyaddr(), naturally.
3738 netdb_name_type (netdbtype.U):
3739 This variable holds the type used for the argument to
3740 gethostbyname(). Usually, this is char * or const char *.
3741 This is only useful if you have gethostbyname(), naturally.
3743 netdb_net_type (netdbtype.U):
3744 This variable holds the type used for the 1st argument to
3745 getnetbyaddr(). Usually, this is int or long.
3746 This is only useful if you have getnetbyaddr(), naturally.
3749 This variable is used internally by Configure to determine the
3750 full pathname (if any) of the nm program. After Configure runs,
3751 the value is reset to a plain "nm" and is not useful.
3754 This variable holds the options that may be necessary for nm.
3756 nm_so_opt (usenm.U):
3757 This variable holds the options that may be necessary for nm
3758 to work on a shared library but that can not be used on an
3759 archive library. Currently, this is only used by Linux, where
3760 nm --dynamic is *required* to get symbols from an ELF library which
3761 has been stripped, but nm --dynamic is *fatal* on an archive library.
3762 Maybe Linux should just always set usenm=false.
3764 nonxs_ext (Extensions.U):
3765 This variable holds a list of all non-xs extensions included
3766 in the package. All of them will be built.
3769 This variable is used internally by Configure to determine the
3770 full pathname (if any) of the nroff program. After Configure runs,
3771 the value is reset to a plain "nroff" and is not useful.
3773 nv_preserves_uv_bits (perlxv.U):
3774 This variable indicates how many of bits type uvtype
3775 a variable nvtype can preserve.
3777 nveformat (perlxvf.U):
3778 This variable contains the format string used for printing
3779 a Perl NV using %e-ish floating point format.
3781 nvEUformat (perlxvf.U):
3782 This variable contains the format string used for printing
3783 a Perl NV using %E-ish floating point format.
3785 nvfformat (perlxvf.U):
3786 This variable confains the format string used for printing
3787 a Perl NV using %f-ish floating point format.
3789 nvFUformat (perlxvf.U):
3790 This variable confains the format string used for printing
3791 a Perl NV using %F-ish floating point format.
3793 nvgformat (perlxvf.U):
3794 This variable contains the format string used for printing
3795 a Perl NV using %g-ish floating point format.
3797 nvGUformat (perlxvf.U):
3798 This variable contains the format string used for printing
3799 a Perl NV using %G-ish floating point format.
3802 This variable is the size of an NV in bytes.
3805 This variable contains the C type used for Perl's NV.
3807 o_nonblock (nblock_io.U):
3808 This variable bears the symbol value to be used during open() or fcntl()
3809 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3810 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3811 but that is only supported by some devices.
3814 This is an old synonym for _o.
3816 old_pthread_create_joinable (d_pthrattrj.U):
3817 This variable defines the constant to use for creating joinable
3818 (aka undetached) pthreads. Unused if pthread.h defines
3819 PTHREAD_CREATE_JOINABLE. If used, possible values are
3820 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3822 optimize (ccflags.U):
3823 This variable contains any optimizer/debugger flag that should be used.
3824 It is up to the Makefile to use it.
3826 orderlib (orderlib.U):
3827 This variable is "true" if the components of libraries must be ordered
3828 (with `lorder $* | tsort`) before placing them in an archive. Set to
3829 "false" if ranlib or ar can generate random libraries.
3831 osname (Oldconfig.U):
3832 This variable contains the operating system name (e.g. sunos,
3833 solaris, hpux, etc.). It can be useful later on for setting
3834 defaults. Any spaces are replaced with underscores. It is set
3835 to a null string if we can't figure it out.
3837 osvers (Oldconfig.U):
3838 This variable contains the operating system version (e.g.
3839 4.1.3, 5.2, etc.). It is primarily used for helping select
3840 an appropriate hints file, but might be useful elsewhere for
3841 setting defaults. It is set to '' if we can't figure it out.
3842 We try to be flexible about how much of the version number
3843 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3844 same for this package, hints files might just be os_4.0 or
3845 os_4.1, etc., not keeping separate files for each little release.
3847 otherlibdirs (otherlibdirs.U):
3848 This variable contains a colon-separated set of paths for the perl
3849 binary to search for additional library files or modules.
3850 These directories will be tacked to the end of @INC.
3851 Perl will automatically search below each path for version-
3852 and architecture-specific directories. See inc_version_list
3854 A value of ' ' means 'none' and is used to preserve this value
3855 for the next run through Configure.
3857 package (package.U):
3858 This variable contains the name of the package being constructed.
3859 It is primarily intended for the use of later Configure units.
3862 This variable contains the name of the preferred pager on the system.
3863 Usual values are (the full pathnames of) more, less, pg, or cat.
3866 This variable contains a command that produces the text of the
3867 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3868 "ypcat passwd" when NIS is used.
3869 On some systems, such as os390, there may be no equivalent
3870 command, in which case this variable is unset.
3872 patchlevel (patchlevel.U):
3873 The patchlevel level of this package.
3874 The value of patchlevel comes from the patchlevel.h file.
3875 In a version number such as 5.6.1, this is the "6".
3876 In patchlevel.h, this is referred to as "PERL_VERSION".
3879 This is an old synonym for p_ in Head.U, the character
3880 used to separate elements in the command shell search PATH.
3883 This variable is defined but not used by Configure.
3884 The value is a plain '' and is not useful.
3887 This variable contains the full path (if any) to a previously
3888 installed perl5.005 or later suitable for running the script
3889 to determine inc_version_list.
3891 PERL_API_REVISION (patchlevel.h):
3892 This number describes the earliest compatible PERL_REVISION of
3893 Perl ("compatibility" here being defined as sufficient binary/API
3894 compatibility to run XS code built with the older version).
3895 Normally this does not change across maintenance releases.
3896 Please read the comment in patchlevel.h.
3898 PERL_API_SUBVERSION (patchlevel.h):
3899 This number describes the earliest compatible PERL_SUBVERSION of
3900 Perl ("compatibility" here being defined as sufficient binary/API
3901 compatibility to run XS code built with the older version).
3902 Normally this does not change across maintenance releases.
3903 Please read the comment in patchlevel.h.
3905 PERL_API_VERSION (patchlevel.h):
3906 This number describes the earliest compatible PERL_VERSION of
3907 Perl ("compatibility" here being defined as sufficient binary/API
3908 compatibility to run XS code built with the older version).
3909 Normally this does not change across maintenance releases.
3910 Please read the comment in patchlevel.h.
3912 PERL_CONFIG_SH (Oldsyms.U):
3913 This is set to 'true' in config.sh so that a shell script
3914 sourcing config.sh can tell if it has been sourced already.
3916 PERL_PATCHLEVEL (Oldsyms.U):
3917 This symbol reflects the patchlevel, if available. Will usually
3918 come from the .patch file, which is available when the perl
3919 source tree was fetched with rsync.
3921 perl_patchlevel (patchlevel.U):
3922 This is the Perl patch level, a numeric change identifier,
3923 as defined by whichever source code maintenance system
3924 is used to maintain the patches; currently Perforce.
3925 It does not correlate with the Perl version numbers or
3926 the maintenance versus development dichotomy except
3927 by also being increasing.
3929 PERL_REVISION (Oldsyms.U):
3930 In a Perl version number such as 5.6.2, this is the 5.
3931 This value is manually set in patchlevel.h
3933 PERL_SUBVERSION (Oldsyms.U):
3934 In a Perl version number such as 5.6.2, this is the 2.
3935 Values greater than 50 represent potentially unstable
3936 development subversions.
3937 This value is manually set in patchlevel.h
3939 PERL_VERSION (Oldsyms.U):
3940 In a Perl version number such as 5.6.2, this is the 6.
3941 This value is manually set in patchlevel.h
3943 perladmin (perladmin.U):
3944 Electronic mail address of the perl5 administrator.
3947 The list of libraries needed by Perl only (any libraries needed
3948 by extensions only will by dropped, if using dynamic loading).
3950 perlpath (perlpath.U):
3951 This variable contains the eventual value of the PERLPATH symbol,
3952 which contains the name of the perl interpreter to be used in
3953 shell scripts and in the "eval 'exec'" idiom. This variable is
3954 not necessarily the pathname of the file containing the perl
3955 interpreter; you must append the executable extension (_exe) if
3956 it is not already present. Note that Perl code that runs during
3957 the Perl build process cannot reference this variable, as Perl
3958 may not have been installed, or even if installed, may be a
3959 different version of Perl.
3962 This variable is used internally by Configure to determine the
3963 full pathname (if any) of the pg program. After Configure runs,
3964 the value is reset to a plain "pg" and is not useful.
3966 phostname (myhostname.U):
3967 This variable contains the eventual value of the PHOSTNAME symbol,
3968 which is a command that can be fed to popen() to get the host name.
3969 The program should probably not presume that the domain is or isn't
3972 pidtype (pidtype.U):
3973 This variable defines PIDTYPE to be something like pid_t, int,
3974 ushort, or whatever type is used to declare process ids in the kernel.
3977 Holds the private path used by Configure to find out the libraries.
3978 Its value is prepend to libpth. This variable takes care of special
3979 machines, like the mips. Usually, it should be empty.
3982 This variable is defined but not used by Configure.
3983 The value is a plain '' and is not useful.
3986 This variable is defined but not used by Configure.
3987 The value is a plain '' and is not useful.
3990 This variable holds the name of the directory below which the
3991 user will install the package. Usually, this is /usr/local, and
3992 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3993 man pages in /usr/local/man, etc. It is only used to set defaults
3994 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3996 prefixexp (prefix.U):
3997 This variable holds the full absolute path of the directory below
3998 which the user will install the package. Derived from prefix.
4000 privlib (privlib.U):
4001 This variable contains the eventual value of the PRIVLIB symbol,
4002 which is the name of the private library for this package. It may
4003 have a ~ on the front. It is up to the makefile to eventually create
4004 this directory while performing installation (with ~ substitution).
4006 privlibexp (privlib.U):
4007 This variable is the ~name expanded version of privlib, so that you
4008 may use it directly in Makefiles or shell scripts.
4010 procselfexe (d_procselfexe.U):
4011 If d_procselfexe is defined, $procselfexe is the filename
4012 of the symbolic link pointing to the absolute pathname of
4013 the executing program.
4015 prototype (prototype.U):
4016 This variable holds the eventual value of CAN_PROTOTYPE, which
4017 indicates the C compiler can handle funciton prototypes.
4019 ptrsize (ptrsize.U):
4020 This variable contains the value of the PTRSIZE symbol, which
4021 indicates to the C program how many bytes there are in a pointer.
4023 quadkind (quadtype.U):
4024 This variable, if defined, encodes the type of a quad:
4025 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4027 quadtype (quadtype.U):
4028 This variable defines Quad_t to be something like long, int,
4029 long long, int64_t, or whatever type is used for 64-bit integers.
4031 randbits (randfunc.U):
4032 Indicates how many bits are produced by the function used to
4033 generate normalized random numbers.
4035 randfunc (randfunc.U):
4036 Indicates the name of the random number function to use.
4037 Values include drand48, random, and rand. In C programs,
4038 the 'Drand01' macro is defined to generate uniformly distributed
4039 random numbers over the range [0., 1.[ (see drand01 and nrand).
4041 random_r_proto (d_random_r.U):
4042 This variable encodes the prototype of random_r.
4043 It is zero if d_random_r is undef, and one of the
4044 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4047 randseedtype (randfunc.U):
4048 Indicates the type of the argument of the seedfunc.
4050 ranlib (orderlib.U):
4051 This variable is set to the pathname of the ranlib program, if it is
4052 needed to generate random libraries. Set to ":" if ar can generate
4053 random libraries or if random libraries are not supported
4055 rd_nodata (nblock_io.U):
4056 This variable holds the return code from read() when no data is
4057 present. It should be -1, but some systems return 0 when O_NDELAY is
4058 used, which is a shame because you cannot make the difference between
4059 no data and an EOF.. Sigh!
4061 readdir64_r_proto (d_readdir64_r.U):
4062 This variable encodes the prototype of readdir64_r.
4063 It is zero if d_readdir64_r is undef, and one of the
4064 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4067 readdir_r_proto (d_readdir_r.U):
4068 This variable encodes the prototype of readdir_r.
4069 It is zero if d_readdir_r is undef, and one of the
4070 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4073 revision (patchlevel.U):
4074 The value of revision comes from the patchlevel.h file.
4075 In a version number such as 5.6.1, this is the "5".
4076 In patchlevel.h, this is referred to as "PERL_REVISION".
4079 This variable is used internally by Configure to determine the
4080 full pathname (if any) of the rm program. After Configure runs,
4081 the value is reset to a plain "rm" and is not useful.
4084 This variable is defined but not used by Configure.
4085 The value is a plain '' and is not useful.
4088 This variable contains the command used by Configure
4089 to copy and execute a cross-compiled executable in the
4090 target host. Useful and available only during Perl build.
4091 Empty string '' if not cross-compiling.
4094 This variable contains 'true' or 'false' depending whether the
4095 nm extraction should be performed or not, according to the value
4096 of usenm and the flags on the Configure command line.
4098 sched_yield (d_pthread_y.U):
4099 This variable defines the way to yield the execution
4100 of the current thread.
4102 scriptdir (scriptdir.U):
4103 This variable holds the name of the directory in which the user wants
4104 to put publicly scripts for the package in question. It is either
4105 the same directory as for binaries, or a special one that can be
4106 mounted across different architectures, like /usr/share. Programs
4107 must be prepared to deal with ~name expansion.
4109 scriptdirexp (scriptdir.U):
4110 This variable is the same as scriptdir, but is filename expanded
4111 at configuration time, for programs not wanting to bother with it.
4114 This variable is used internally by Configure to determine the
4115 full pathname (if any) of the sed program. After Configure runs,
4116 the value is reset to a plain "sed" and is not useful.
4118 seedfunc (randfunc.U):
4119 Indicates the random number generating seed function.
4120 Values include srand48, srandom, and srand.
4122 selectminbits (selectminbits.U):
4123 This variable holds the minimum number of bits operated by select.
4124 That is, if you do select(n, ...), how many bits at least will be
4125 cleared in the masks if some activity is detected. Usually this
4126 is either n or 32*ceil(n/32), especially many little-endians do
4127 the latter. This is only useful if you have select(), naturally.
4129 selecttype (selecttype.U):
4130 This variable holds the type used for the 2nd, 3rd, and 4th
4131 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4132 is defined, and 'int *' otherwise. This is only useful if you
4133 have select(), naturally.
4136 This variable is defined but not used by Configure.
4137 The value is a plain '' and is not useful.
4139 setgrent_r_proto (d_setgrent_r.U):
4140 This variable encodes the prototype of setgrent_r.
4141 It is zero if d_setgrent_r is undef, and one of the
4142 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4145 sethostent_r_proto (d_sethostent_r.U):
4146 This variable encodes the prototype of sethostent_r.
4147 It is zero if d_sethostent_r is undef, and one of the
4148 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4151 setlocale_r_proto (d_setlocale_r.U):
4152 This variable encodes the prototype of setlocale_r.
4153 It is zero if d_setlocale_r is undef, and one of the
4154 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4157 setnetent_r_proto (d_setnetent_r.U):
4158 This variable encodes the prototype of setnetent_r.
4159 It is zero if d_setnetent_r is undef, and one of the
4160 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4163 setprotoent_r_proto (d_setprotoent_r.U):
4164 This variable encodes the prototype of setprotoent_r.
4165 It is zero if d_setprotoent_r is undef, and one of the
4166 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4169 setpwent_r_proto (d_setpwent_r.U):
4170 This variable encodes the prototype of setpwent_r.
4171 It is zero if d_setpwent_r is undef, and one of the
4172 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4175 setservent_r_proto (d_setservent_r.U):
4176 This variable encodes the prototype of setservent_r.
4177 It is zero if d_setservent_r is undef, and one of the
4178 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4182 This variable contains the full pathname of the shell used
4183 on this system to execute Bourne shell scripts. Usually, this will be
4184 /bin/sh, though it's possible that some systems will have /bin/ksh,
4185 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4187 This unit comes before Options.U, so you can't set sh with a '-D'
4188 option, though you can override this (and startsh)
4189 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4192 This variable is defined but not used by Configure.
4193 The value is a plain '' and is not useful.
4195 sharpbang (spitshell.U):
4196 This variable contains the string #! if this system supports that
4199 shmattype (d_shmat.U):
4200 This symbol contains the type of pointer returned by shmat().
4201 It can be 'void *' or 'char *'.
4203 shortsize (intsize.U):
4204 This variable contains the value of the SHORTSIZE symbol which
4205 indicates to the C program how many bytes there are in a short.
4207 shrpenv (libperl.U):
4208 If the user builds a shared libperl.so, then we need to tell the
4209 'perl' executable where it will be able to find the installed libperl.so.
4210 One way to do this on some systems is to set the environment variable
4211 LD_RUN_PATH to the directory that will be the final location of the
4212 shared libperl.so. The makefile can use this with something like
4213 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4215 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4218 See the main perl Makefile.SH for actual working usage.
4219 Alternatively, we might be able to use a command line option such
4220 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4221 $archlibexp/CORE (Linux).
4223 shsharp (spitshell.U):
4224 This variable tells further Configure units whether your sh can
4227 sig_count (sig_name.U):
4228 This variable holds a number larger than the largest valid
4229 signal number. This is usually the same as the NSIG macro.
4231 sig_name (sig_name.U):
4232 This variable holds the signal names, space separated. The leading
4233 SIG in signal name is removed. A ZERO is prepended to the list.
4234 This is currently not used, sig_name_init is used instead.
4236 sig_name_init (sig_name.U):
4237 This variable holds the signal names, enclosed in double quotes and
4238 separated by commas, suitable for use in the SIG_NAME definition
4239 below. A "ZERO" is prepended to the list, and the list is
4240 terminated with a plain 0. The leading SIG in signal names
4241 is removed. See sig_num.
4243 sig_num (sig_name.U):
4244 This variable holds the signal numbers, space separated. A ZERO is
4245 prepended to the list (corresponding to the fake SIGZERO).
4246 Those numbers correspond to the value of the signal listed
4247 in the same place within the sig_name list.
4248 This is currently not used, sig_num_init is used instead.
4250 sig_num_init (sig_name.U):
4251 This variable holds the signal numbers, enclosed in double quotes and
4252 separated by commas, suitable for use in the SIG_NUM definition
4253 below. A "ZERO" is prepended to the list, and the list is
4254 terminated with a plain 0.
4256 sig_size (sig_name.U):
4257 This variable contains the number of elements of the sig_name
4260 signal_t (d_voidsig.U):
4261 This variable holds the type of the signal handler (void or int).
4263 sitearch (sitearch.U):
4264 This variable contains the eventual value of the SITEARCH symbol,
4265 which is the name of the private library for this package. It may
4266 have a ~ on the front. It is up to the makefile to eventually create
4267 this directory while performing installation (with ~ substitution).
4268 The standard distribution will put nothing in this directory.
4269 After perl has been installed, users may install their own local
4270 architecture-dependent modules in this directory with
4271 MakeMaker Makefile.PL
4272 or equivalent. See INSTALL for details.
4274 sitearchexp (sitearch.U):
4275 This variable is the ~name expanded version of sitearch, so that you
4276 may use it directly in Makefiles or shell scripts.
4278 sitebin (sitebin.U):
4279 This variable holds the name of the directory in which the user wants
4280 to put add-on publicly executable files for the package in question. It
4281 is most often a local directory such as /usr/local/bin. Programs using
4282 this variable must be prepared to deal with ~name substitution.
4283 The standard distribution will put nothing in this directory.
4284 After perl has been installed, users may install their own local
4285 executables in this directory with
4286 MakeMaker Makefile.PL
4287 or equivalent. See INSTALL for details.
4289 sitebinexp (sitebin.U):
4290 This is the same as the sitebin variable, but is filename expanded at
4291 configuration time, for use in your makefiles.
4293 sitehtml1dir (sitehtml1dir.U):
4294 This variable contains the name of the directory in which site-specific
4295 html source pages are to be put. It is the responsibility of the
4296 Makefile.SH to get the value of this into the proper command.
4297 You must be prepared to do the ~name expansion yourself.
4298 The standard distribution will put nothing in this directory.
4299 After perl has been installed, users may install their own local
4300 html pages in this directory with
4301 MakeMaker Makefile.PL
4302 or equivalent. See INSTALL for details.
4304 sitehtml1direxp (sitehtml1dir.U):
4305 This variable is the same as the sitehtml1dir variable, but is filename
4306 expanded at configuration time, for convenient use in makefiles.
4308 sitehtml3dir (sitehtml3dir.U):
4309 This variable contains the name of the directory in which site-specific
4310 library html source pages are to be put. It is the responsibility of the
4311 Makefile.SH to get the value of this into the proper command.
4312 You must be prepared to do the ~name expansion yourself.
4313 The standard distribution will put nothing in this directory.
4314 After perl has been installed, users may install their own local
4315 library html pages in this directory with
4316 MakeMaker Makefile.PL
4317 or equivalent. See INSTALL for details.
4319 sitehtml3direxp (sitehtml3dir.U):
4320 This variable is the same as the sitehtml3dir variable, but is filename
4321 expanded at configuration time, for convenient use in makefiles.
4323 sitelib (sitelib.U):
4324 This variable contains the eventual value of the SITELIB symbol,
4325 which is the name of the private library for this package. It may
4326 have a ~ on the front. It is up to the makefile to eventually create
4327 this directory while performing installation (with ~ substitution).
4328 The standard distribution will put nothing in this directory.
4329 After perl has been installed, users may install their own local
4330 architecture-independent modules in this directory with
4331 MakeMaker Makefile.PL
4332 or equivalent. See INSTALL for details.
4334 sitelib_stem (sitelib.U):
4335 This variable is $sitelibexp with any trailing version-specific component
4336 removed. The elements in inc_version_list (inc_version_list.U) can
4337 be tacked onto this variable to generate a list of directories to search.
4339 sitelibexp (sitelib.U):
4340 This variable is the ~name expanded version of sitelib, so that you
4341 may use it directly in Makefiles or shell scripts.
4343 siteman1dir (siteman1dir.U):
4344 This variable contains the name of the directory in which site-specific
4345 manual source pages are to be put. It is the responsibility of the
4346 Makefile.SH to get the value of this into the proper command.
4347 You must be prepared to do the ~name expansion yourself.
4348 The standard distribution will put nothing in this directory.
4349 After perl has been installed, users may install their own local
4350 man1 pages in this directory with
4351 MakeMaker Makefile.PL
4352 or equivalent. See INSTALL for details.
4354 siteman1direxp (siteman1dir.U):
4355 This variable is the same as the siteman1dir variable, but is filename
4356 expanded at configuration time, for convenient use in makefiles.
4358 siteman3dir (siteman3dir.U):
4359 This variable contains the name of the directory in which site-specific
4360 library man source pages are to be put. It is the responsibility of the
4361 Makefile.SH to get the value of this into the proper command.
4362 You must be prepared to do the ~name expansion yourself.
4363 The standard distribution will put nothing in this directory.
4364 After perl has been installed, users may install their own local
4365 man3 pages in this directory with
4366 MakeMaker Makefile.PL
4367 or equivalent. See INSTALL for details.
4369 siteman3direxp (siteman3dir.U):
4370 This variable is the same as the siteman3dir variable, but is filename
4371 expanded at configuration time, for convenient use in makefiles.
4373 siteprefix (siteprefix.U):
4374 This variable holds the full absolute path of the directory below
4375 which the user will install add-on packages.
4376 See INSTALL for usage and examples.
4378 siteprefixexp (siteprefix.U):
4379 This variable holds the full absolute path of the directory below
4380 which the user will install add-on packages. Derived from siteprefix.
4382 sitescript (sitescript.U):
4383 This variable holds the name of the directory in which the user wants
4384 to put add-on publicly executable files for the package in question. It
4385 is most often a local directory such as /usr/local/bin. Programs using
4386 this variable must be prepared to deal with ~name substitution.
4387 The standard distribution will put nothing in this directory.
4388 After perl has been installed, users may install their own local
4389 scripts in this directory with
4390 MakeMaker Makefile.PL
4391 or equivalent. See INSTALL for details.
4393 sitescriptexp (sitescript.U):
4394 This is the same as the sitescript variable, but is filename expanded at
4395 configuration time, for use in your makefiles.
4397 sizesize (sizesize.U):
4398 This variable contains the size of a sizetype in bytes.
4400 sizetype (sizetype.U):
4401 This variable defines sizetype to be something like size_t,
4402 unsigned long, or whatever type is used to declare length
4403 parameters for string functions.
4406 This variable is defined but not used by Configure.
4407 The value is a plain '' and is not useful.
4410 This variable is defined but not used by Configure.
4411 The value is a plain '' and is not useful.
4414 This variable holds the extension used to identify shared libraries
4415 (also known as shared objects) on the system. Usually set to 'so'.
4417 sockethdr (d_socket.U):
4418 This variable has any cpp '-I' flags needed for socket support.
4420 socketlib (d_socket.U):
4421 This variable has the names of any libraries needed for socket support.
4423 socksizetype (socksizetype.U):
4424 This variable holds the type used for the size argument
4425 for various socket calls like accept. Usual values include
4426 socklen_t, size_t, and int.
4429 This variable is used internally by Configure to determine the
4430 full pathname (if any) of the sort program. After Configure runs,
4431 the value is reset to a plain "sort" and is not useful.
4433 spackage (package.U):
4434 This variable contains the name of the package being constructed,
4435 with the first letter uppercased, i.e. suitable for starting
4438 spitshell (spitshell.U):
4439 This variable contains the command necessary to spit out a runnable
4440 shell on this system. It is either cat or a grep '-v' for # comments.
4442 sPRId64 (quadfio.U):
4443 This variable, if defined, contains the string used by stdio to
4444 format 64-bit decimal numbers (format 'd') for output.
4446 sPRIeldbl (longdblfio.U):
4447 This variable, if defined, contains the string used by stdio to
4448 format long doubles (format 'e') for output.
4450 sPRIEUldbl (longdblfio.U):
4451 This variable, if defined, contains the string used by stdio to
4452 format long doubles (format 'E') for output.
4453 The 'U' in the name is to separate this from sPRIeldbl so that even
4454 case-blind systems can see the difference.
4456 sPRIfldbl (longdblfio.U):
4457 This variable, if defined, contains the string used by stdio to
4458 format long doubles (format 'f') for output.
4460 sPRIFUldbl (longdblfio.U):
4461 This variable, if defined, contains the string used by stdio to
4462 format long doubles (format 'F') for output.
4463 The 'U' in the name is to separate this from sPRIfldbl so that even
4464 case-blind systems can see the difference.
4466 sPRIgldbl (longdblfio.U):
4467 This variable, if defined, contains the string used by stdio to
4468 format long doubles (format 'g') for output.
4470 sPRIGUldbl (longdblfio.U):
4471 This variable, if defined, contains the string used by stdio to
4472 format long doubles (format 'G') for output.
4473 The 'U' in the name is to separate this from sPRIgldbl so that even
4474 case-blind systems can see the difference.
4476 sPRIi64 (quadfio.U):
4477 This variable, if defined, contains the string used by stdio to
4478 format 64-bit decimal numbers (format 'i') for output.
4480 sPRIo64 (quadfio.U):
4481 This variable, if defined, contains the string used by stdio to
4482 format 64-bit octal numbers (format 'o') for output.
4484 sPRIu64 (quadfio.U):
4485 This variable, if defined, contains the string used by stdio to
4486 format 64-bit unsigned decimal numbers (format 'u') for output.
4488 sPRIx64 (quadfio.U):
4489 This variable, if defined, contains the string used by stdio to
4490 format 64-bit hexadecimal numbers (format 'x') for output.
4492 sPRIXU64 (quadfio.U):
4493 This variable, if defined, contains the string used by stdio to
4494 format 64-bit hExADECimAl numbers (format 'X') for output.
4495 The 'U' in the name is to separate this from sPRIx64 so that even
4496 case-blind systems can see the difference.
4498 srand48_r_proto (d_srand48_r.U):
4499 This variable encodes the prototype of srand48_r.
4500 It is zero if d_srand48_r is undef, and one of the
4501 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4504 srandom_r_proto (d_srandom_r.U):
4505 This variable encodes the prototype of srandom_r.
4506 It is zero if d_srandom_r is undef, and one of the
4507 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4511 This variable holds the path to the package source. It is up to
4512 the Makefile to use this variable and set VPATH accordingly to
4513 find the sources remotely.
4515 sSCNfldbl (longdblfio.U):
4516 This variable, if defined, contains the string used by stdio to
4517 format long doubles (format 'f') for input.
4519 ssizetype (ssizetype.U):
4520 This variable defines ssizetype to be something like ssize_t,
4521 long or int. It is used by functions that return a count
4522 of bytes or an error condition. It must be a signed type.
4523 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4525 startperl (startperl.U):
4526 This variable contains the string to put on the front of a perl
4527 script to make sure (hopefully) that it runs with perl and not some
4528 shell. Of course, that leading line must be followed by the classical
4530 eval 'exec perl -S $0 ${1+"$@"}'
4531 if $running_under_some_shell;
4532 to guarantee perl startup should the shell execute the script. Note
4533 that this magic incatation is not understood by csh.
4535 startsh (startsh.U):
4536 This variable contains the string to put on the front of a shell
4537 script to make sure (hopefully) that it runs with sh and not some
4540 static_ext (Extensions.U):
4541 This variable holds a list of XS extension files we want to
4542 link statically into the package. It is used by Makefile.
4544 stdchar (stdchar.U):
4545 This variable conditionally defines STDCHAR to be the type of char
4546 used in stdio.h. It has the values "unsigned char" or "char".
4548 stdio_base (d_stdstdio.U):
4549 This variable defines how, given a FILE pointer, fp, to access the
4550 _base field (or equivalent) of stdio.h's FILE structure. This will
4551 be used to define the macro FILE_base(fp).
4553 stdio_bufsiz (d_stdstdio.U):
4554 This variable defines how, given a FILE pointer, fp, to determine
4555 the number of bytes store in the I/O buffer pointer to by the
4556 _base field (or equivalent) of stdio.h's FILE structure. This will
4557 be used to define the macro FILE_bufsiz(fp).
4559 stdio_cnt (d_stdstdio.U):
4560 This variable defines how, given a FILE pointer, fp, to access the
4561 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4562 be used to define the macro FILE_cnt(fp).
4564 stdio_filbuf (d_stdstdio.U):
4565 This variable defines how, given a FILE pointer, fp, to tell
4566 stdio to refill its internal buffers (?). This will
4567 be used to define the macro FILE_filbuf(fp).
4569 stdio_ptr (d_stdstdio.U):
4570 This variable defines how, given a FILE pointer, fp, to access the
4571 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4572 be used to define the macro FILE_ptr(fp).
4574 stdio_stream_array (stdio_streams.U):
4575 This variable tells the name of the array holding the stdio streams.
4576 Usual values include _iob, __iob, and __sF.
4578 strerror_r_proto (d_strerror_r.U):
4579 This variable encodes the prototype of strerror_r.
4580 It is zero if d_strerror_r is undef, and one of the
4581 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4584 strings (i_string.U):
4585 This variable holds the full path of the string header that will be
4586 used. Typically /usr/include/string.h or /usr/include/strings.h.
4589 This variable is defined but not used by Configure.
4590 The value is a plain '' and is not useful.
4592 subversion (patchlevel.U):
4593 The subversion level of this package.
4594 The value of subversion comes from the patchlevel.h file.
4595 In a version number such as 5.6.1, this is the "1".
4596 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4597 This is unique to perl.
4600 This variable holds the place where the manual is located on this
4601 system. It is not the place where the user wants to put his manual
4602 pages. Rather it is the place where Configure may look to find manual
4603 for unix commands (section 1 of the manual usually). See mansrc.
4606 This variable is defined but not used by Configure.
4607 The value is a plain '' and is not useful.
4610 This variable is defined but not used by Configure.
4611 The value is a plain '' and is not useful.
4613 targetarch (Cross.U):
4614 If cross-compiling, this variable contains the target architecture.
4615 If not, this will be empty.
4618 This variable is defined but not used by Configure.
4619 The value is a plain '' and is not useful.
4622 This variable is defined but not used by Configure.
4623 The value is a plain '' and is not useful.
4626 This variable is used internally by Configure to determine the
4627 full pathname (if any) of the test program. After Configure runs,
4628 the value is reset to a plain "test" and is not useful.
4630 timeincl (i_time.U):
4631 This variable holds the full path of the included time header(s).
4633 timetype (d_time.U):
4634 This variable holds the type returned by time(). It can be long,
4635 or time_t on BSD sites (in which case <sys/types.h> should be
4636 included). Anyway, the type Time_t should be used.
4638 tmpnam_r_proto (d_tmpnam_r.U):
4639 This variable encodes the prototype of tmpnam_r.
4640 It is zero if d_tmpnam_r is undef, and one of the
4641 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4645 This variable contains the command used by Configure
4646 to copy to from the target host. Useful and available
4647 only during Perl build.
4648 The string ':' if not cross-compiling.
4651 This variable is used internally by Configure to determine the
4652 full pathname (if any) of the touch program. After Configure runs,
4653 the value is reset to a plain "touch" and is not useful.
4656 This variable is used internally by Configure to determine the
4657 full pathname (if any) of the tr program. After Configure runs,
4658 the value is reset to a plain "tr" and is not useful.
4661 This variable contains the value to be passed to the tr(1)
4662 command to transliterate a newline. Typical values are
4663 '\012' and '\n'. This is needed for EBCDIC systems where
4664 newline is not necessarily '\012'.
4667 This variable is defined but not used by Configure.
4668 The value is a plain '' and is not useful.
4670 ttyname_r_proto (d_ttyname_r.U):
4671 This variable encodes the prototype of ttyname_r.
4672 It is zero if d_ttyname_r is undef, and one of the
4673 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4677 This variable is the size of an U16 in bytes.
4680 This variable contains the C type used for Perl's U16.
4683 This variable is the size of an U32 in bytes.
4686 This variable contains the C type used for Perl's U32.
4689 This variable is the size of an U64 in bytes.
4692 This variable contains the C type used for Perl's U64.
4695 This variable is the size of an U8 in bytes.
4698 This variable contains the C type used for Perl's U8.
4701 This variable contains the format string used for printing a Uid_t.
4703 uidsign (uidsign.U):
4704 This variable contains the signedness of a uidtype.
4705 1 for unsigned, -1 for signed.
4707 uidsize (uidsize.U):
4708 This variable contains the size of a uidtype in bytes.
4710 uidtype (uidtype.U):
4711 This variable defines Uid_t to be something like uid_t, int,
4712 ushort, or whatever type is used to declare user ids in the kernel.
4715 This variable is used internally by Configure to determine the
4716 full pathname (if any) of the uname program. After Configure runs,
4717 the value is reset to a plain "uname" and is not useful.
4720 This variable is used internally by Configure to determine the
4721 full pathname (if any) of the uniq program. After Configure runs,
4722 the value is reset to a plain "uniq" and is not useful.
4724 uquadtype (quadtype.U):
4725 This variable defines Uquad_t to be something like unsigned long,
4726 unsigned int, unsigned long long, uint64_t, or whatever type is
4727 used for 64-bit integers.
4729 use5005threads (usethreads.U):
4730 This variable conditionally defines the USE_5005THREADS symbol,
4731 and indicates that Perl should be built to use the 5.005-based
4732 threading implementation.
4734 use64bitall (use64bits.U):
4735 This variable conditionally defines the USE_64_BIT_ALL symbol,
4736 and indicates that 64-bit integer types should be used
4737 when available. The maximal possible
4738 64-bitness is employed: LP64 or ILP64, meaning that you will
4739 be able to use more than 2 gigabytes of memory. This mode is
4740 even more binary incompatible than USE_64_BIT_INT. You may not
4741 be able to run the resulting executable in a 32-bit CPU at all or
4742 you may need at least to reboot your OS to 64-bit mode.
4744 use64bitint (use64bits.U):
4745 This variable conditionally defines the USE_64_BIT_INT symbol,
4746 and indicates that 64-bit integer types should be used
4747 when available. The minimal possible 64-bitness
4748 is employed, just enough to get 64-bit integers into Perl.
4749 This may mean using for example "long longs", while your memory
4750 may still be limited to 2 gigabytes.
4752 usecrosscompile (Cross.U):
4753 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4754 and indicates that Perl has been cross-compiled.
4757 This variable indicates if the system supports dynamic
4758 loading of some sort. See also dlsrc and dlobj.
4760 usefaststdio (usefaststdio.U):
4761 This variable conditionally defines the USE_FAST_STDIO symbol,
4762 and indicates that Perl should be built to use 'fast stdio'.
4763 Defaults to define in Perls 5.8 and earlier, to undef later.
4765 useithreads (usethreads.U):
4766 This variable conditionally defines the USE_ITHREADS symbol,
4767 and indicates that Perl should be built to use the interpreter-based
4768 threading implementation.
4770 uselargefiles (uselfs.U):
4771 This variable conditionally defines the USE_LARGE_FILES symbol,
4772 and indicates that large file interfaces should be used when
4775 uselongdouble (uselongdbl.U):
4776 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4777 and indicates that long doubles should be used when available.
4779 usemallocwrap (mallocsrc.U):
4780 This variable contains y if we are wrapping malloc to prevent
4781 integer overflow during size calculations.
4783 usemorebits (usemorebits.U):
4784 This variable conditionally defines the USE_MORE_BITS symbol,
4785 and indicates that explicit 64-bit interfaces and long doubles
4786 should be used when available.
4788 usemultiplicity (usemultiplicity.U):
4789 This variable conditionally defines the MULTIPLICITY symbol,
4790 and indicates that Perl should be built to use multiplicity.
4792 usemymalloc (mallocsrc.U):
4793 This variable contains y if the malloc that comes with this package
4794 is desired over the system's version of malloc. People often include
4795 special versions of malloc for effiency, but such versions are often
4796 less portable. See also mallocsrc and mallocobj.
4797 If this is 'y', then -lmalloc is removed from $libs.
4800 This variable contains 'true' or 'false' depending whether the
4801 nm extraction is wanted or not.
4803 useopcode (Extensions.U):
4804 This variable holds either 'true' or 'false' to indicate
4805 whether the Opcode extension should be used. The sole
4806 use for this currently is to allow an easy mechanism
4807 for users to skip the Opcode extension from the Configure
4810 useperlio (useperlio.U):
4811 This variable conditionally defines the USE_PERLIO symbol,
4812 and indicates that the PerlIO abstraction should be
4815 useposix (Extensions.U):
4816 This variable holds either 'true' or 'false' to indicate
4817 whether the POSIX extension should be used. The sole
4818 use for this currently is to allow an easy mechanism
4819 for hints files to indicate that POSIX will not compile
4820 on a particular system.
4822 usereentrant (usethreads.U):
4823 This variable conditionally defines the USE_REENTRANT_API symbol,
4824 which indicates that the thread code may try to use the various
4825 _r versions of library functions. This is only potentially
4826 meaningful if usethreads is set and is very experimental, it is
4827 not even prompted for.
4829 userelocatableinc (bin.U):
4830 This variable is set to true to indicate that perl should relocate
4831 @INC entries at runtime based on the path to the perl binary.
4832 Any @INC paths starting ".../" are relocated relative to the directory
4833 containing the perl binary, and a logical cleanup of the path is then
4834 made around the join point (removing "dir/../" pairs)
4837 This variable is set to true when the user agrees to use sfio.
4838 It is set to false when sfio is not available or when the user
4839 explicitely requests not to use sfio. It is here primarily so
4840 that command-line settings can override the auto-detection of
4841 d_sfio without running into a "WHOA THERE".
4843 useshrplib (libperl.U):
4844 This variable is set to 'true' if the user wishes
4845 to build a shared libperl, and 'false' otherwise.
4847 usesitecustomize (d_sitecustomize.U):
4848 This variable is set to true when the user requires a mechanism that
4849 allows the sysadmin to add entries to @INC at runtime. This variable
4850 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
4852 usesocks (usesocks.U):
4853 This variable conditionally defines the USE_SOCKS symbol,
4854 and indicates that Perl should be built to use SOCKS.
4856 usethreads (usethreads.U):
4857 This variable conditionally defines the USE_THREADS symbol,
4858 and indicates that Perl should be built to use threads.
4860 usevendorprefix (vendorprefix.U):
4861 This variable tells whether the vendorprefix
4862 and consequently other vendor* paths are in use.
4864 usevfork (d_vfork.U):
4865 This variable is set to true when the user accepts to use vfork.
4866 It is set to false when no vfork is available or when the user
4867 explicitely requests not to use vfork.
4870 This variable holds the path of the include files, which is
4871 usually /usr/include. It is mainly used by other Configure units.
4874 This variable is defined but not used by Configure.
4875 The value is a plain '' and is not useful.
4877 uvoformat (perlxvf.U):
4878 This variable contains the format string used for printing
4879 a Perl UV as an unsigned octal integer.
4882 This variable is the size of a UV in bytes.
4885 This variable contains the C type used for Perl's UV.
4887 uvuformat (perlxvf.U):
4888 This variable contains the format string used for printing
4889 a Perl UV as an unsigned decimal integer.
4891 uvxformat (perlxvf.U):
4892 This variable contains the format string used for printing
4893 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4895 uvXUformat (perlxvf.U):
4896 This variable contains the format string used for printing
4897 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4899 vendorarch (vendorarch.U):
4900 This variable contains the value of the PERL_VENDORARCH symbol.
4901 It may have a ~ on the front.
4902 The standard distribution will put nothing in this directory.
4903 Vendors who distribute perl may wish to place their own
4904 architecture-dependent modules and extensions in this directory with
4905 MakeMaker Makefile.PL INSTALLDIRS=vendor
4906 or equivalent. See INSTALL for details.
4908 vendorarchexp (vendorarch.U):
4909 This variable is the ~name expanded version of vendorarch, so that you
4910 may use it directly in Makefiles or shell scripts.
4912 vendorbin (vendorbin.U):
4913 This variable contains the eventual value of the VENDORBIN symbol.
4914 It may have a ~ on the front.
4915 The standard distribution will put nothing in this directory.
4916 Vendors who distribute perl may wish to place additional
4917 binaries in this directory with
4918 MakeMaker Makefile.PL INSTALLDIRS=vendor
4919 or equivalent. See INSTALL for details.
4921 vendorbinexp (vendorbin.U):
4922 This variable is the ~name expanded version of vendorbin, so that you
4923 may use it directly in Makefiles or shell scripts.
4925 vendorhtml1dir (vendorhtml1dir.U):
4926 This variable contains the name of the directory for html
4927 pages. It may have a ~ on the front.
4928 The standard distribution will put nothing in this directory.
4929 Vendors who distribute perl may wish to place their own
4930 html pages in this directory with
4931 MakeMaker Makefile.PL INSTALLDIRS=vendor
4932 or equivalent. See INSTALL for details.
4934 vendorhtml1direxp (vendorhtml1dir.U):
4935 This variable is the ~name expanded version of vendorhtml1dir, so that you
4936 may use it directly in Makefiles or shell scripts.
4938 vendorhtml3dir (vendorhtml3dir.U):
4939 This variable contains the name of the directory for html
4940 library pages. It may have a ~ on the front.
4941 The standard distribution will put nothing in this directory.
4942 Vendors who distribute perl may wish to place their own
4943 html pages for modules and extensions in this directory with
4944 MakeMaker Makefile.PL INSTALLDIRS=vendor
4945 or equivalent. See INSTALL for details.
4947 vendorhtml3direxp (vendorhtml3dir.U):
4948 This variable is the ~name expanded version of vendorhtml3dir, so that you
4949 may use it directly in Makefiles or shell scripts.
4951 vendorlib (vendorlib.U):
4952 This variable contains the eventual value of the VENDORLIB symbol,
4953 which is the name of the private library for this package.
4954 The standard distribution will put nothing in this directory.
4955 Vendors who distribute perl may wish to place their own
4956 modules in this directory with
4957 MakeMaker Makefile.PL INSTALLDIRS=vendor
4958 or equivalent. See INSTALL for details.
4960 vendorlib_stem (vendorlib.U):
4961 This variable is $vendorlibexp with any trailing version-specific component
4962 removed. The elements in inc_version_list (inc_version_list.U) can
4963 be tacked onto this variable to generate a list of directories to search.
4965 vendorlibexp (vendorlib.U):
4966 This variable is the ~name expanded version of vendorlib, so that you
4967 may use it directly in Makefiles or shell scripts.
4969 vendorman1dir (vendorman1dir.U):
4970 This variable contains the name of the directory for man1
4971 pages. It may have a ~ on the front.
4972 The standard distribution will put nothing in this directory.
4973 Vendors who distribute perl may wish to place their own
4974 man1 pages in this directory with
4975 MakeMaker Makefile.PL INSTALLDIRS=vendor
4976 or equivalent. See INSTALL for details.
4978 vendorman1direxp (vendorman1dir.U):
4979 This variable is the ~name expanded version of vendorman1dir, so that you
4980 may use it directly in Makefiles or shell scripts.
4982 vendorman3dir (vendorman3dir.U):
4983 This variable contains the name of the directory for man3
4984 pages. It may have a ~ on the front.
4985 The standard distribution will put nothing in this directory.
4986 Vendors who distribute perl may wish to place their own
4987 man3 pages in this directory with
4988 MakeMaker Makefile.PL INSTALLDIRS=vendor
4989 or equivalent. See INSTALL for details.
4991 vendorman3direxp (vendorman3dir.U):
4992 This variable is the ~name expanded version of vendorman3dir, so that you
4993 may use it directly in Makefiles or shell scripts.
4995 vendorprefix (vendorprefix.U):
4996 This variable holds the full absolute path of the directory below
4997 which the vendor will install add-on packages.
4998 See INSTALL for usage and examples.
5000 vendorprefixexp (vendorprefix.U):
5001 This variable holds the full absolute path of the directory below
5002 which the vendor will install add-on packages. Derived from vendorprefix.
5004 vendorscript (vendorscript.U):
5005 This variable contains the eventual value of the VENDORSCRIPT symbol.
5006 It may have a ~ on the front.
5007 The standard distribution will put nothing in this directory.
5008 Vendors who distribute perl may wish to place additional
5009 executable scripts in this directory with
5010 MakeMaker Makefile.PL INSTALLDIRS=vendor
5011 or equivalent. See INSTALL for details.
5013 vendorscriptexp (vendorscript.U):
5014 This variable is the ~name expanded version of vendorscript, so that you
5015 may use it directly in Makefiles or shell scripts.
5017 version (patchlevel.U):
5018 The full version number of this package, such as 5.6.1 (or 5_6_1).
5019 This combines revision, patchlevel, and subversion to get the
5020 full version number, including any possible subversions.
5021 This is suitable for use as a directory name, and hence is
5022 filesystem dependent.
5024 version_patchlevel_string (patchlevel.U):
5025 This is a string combining version, subversion and
5026 perl_patchlevel (if perl_patchlevel is non-zero).
5027 It is typically something like
5028 'version 7 subversion 1' or
5029 'version 7 subversion 1 patchlevel 11224'
5030 It is computed here to avoid duplication of code in myconfig.SH
5033 versiononly (versiononly.U):
5034 If set, this symbol indicates that only the version-specific
5035 components of a perl installation should be installed.
5036 This may be useful for making a test installation of a new
5037 version without disturbing the existing installation.
5038 Setting versiononly is equivalent to setting installperl's -v option.
5039 In particular, the non-versioned scripts and programs such as
5040 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5041 (see INSTALL for a more complete list). Nor are the man
5043 Usually, this is undef.
5046 This variable is defined but not used by Configure.
5047 The value is a plain '' and is not useful.
5049 voidflags (voidflags.U):
5050 This variable contains the eventual value of the VOIDFLAGS symbol,
5051 which indicates how much support of the void type is given by this
5052 compiler. See VOIDFLAGS for more info.
5055 This variable holds extra path (space-separated) used to find
5056 libraries on this platform, for example CPU-specific libraries
5057 (on multi-CPU platforms) may be listed here.
5060 This variable holds the name of the compiler compiler we
5061 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5064 This variable contains any additional yacc flags desired by the
5065 user. It is up to the Makefile to use this.
5068 This variable is defined but not used by Configure.
5069 The value is a plain '' and is not useful.
5072 This variable is used internally by Configure to determine the
5073 full pathname (if any) of the zip program. After Configure runs,
5074 the value is reset to a plain "zip" and is not useful.