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_casti32 (d_casti32.U):
486 This variable conditionally defines CASTI32, which indicates
487 whether the C compiler can cast large floats to 32-bit ints.
489 d_castneg (d_castneg.U):
490 This variable conditionally defines CASTNEG, which indicates
491 wether the C compiler can cast negative float to unsigned.
493 d_charvspr (d_vprintf.U):
494 This variable conditionally defines CHARVSPRINTF if this system
495 has vsprintf returning type (char*). The trend seems to be to
496 declare it as "int vsprintf()".
499 This variable conditionally defines the HAS_CHOWN symbol, which
500 indicates to the C program that the chown() routine is available.
502 d_chroot (d_chroot.U):
503 This variable conditionally defines the HAS_CHROOT symbol, which
504 indicates to the C program that the chroot() routine is available.
506 d_chsize (d_chsize.U):
507 This variable conditionally defines the CHSIZE symbol, which
508 indicates to the C program that the chsize() routine is available
509 to truncate files. You might need a -lx to get this routine.
512 This variable conditionally defines the HAS_CLASS symbol, which
513 indicates to the C program that the class() routine is available.
515 d_clearenv (d_clearenv.U):
516 This variable conditionally defines the HAS_CLEARENV symbol, which
517 indicates to the C program that the clearenv () routine is available.
519 d_closedir (d_closedir.U):
520 This variable conditionally defines HAS_CLOSEDIR if closedir() is
523 d_cmsghdr_s (d_cmsghdr_s.U):
524 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
525 which indicates that the struct cmsghdr is supported.
528 This variable conditionally defines the HASCONST symbol, which
529 indicates to the C program that this C compiler knows about the
532 d_copysignl (d_copysignl.U):
533 This variable conditionally defines the HAS_COPYSIGNL symbol, which
534 indicates to the C program that the copysignl() routine is available.
535 If aintl is also present we can emulate modfl.
538 This variable conditionally defines the CRYPT symbol, which
539 indicates to the C program that the crypt() routine is available
540 to encrypt passwords and the like.
542 d_crypt_r (d_crypt_r.U):
543 This variable conditionally defines the HAS_CRYPT_R symbol,
544 which indicates to the C program that the crypt_r()
545 routine is available.
548 This variable conditionally defines the CSH symbol, which
549 indicates to the C program that the C-shell exists.
551 d_ctermid_r (d_ctermid_r.U):
552 This variable conditionally defines the HAS_CTERMID_R symbol,
553 which indicates to the C program that the ctermid_r()
554 routine is available.
556 d_ctime_r (d_ctime_r.U):
557 This variable conditionally defines the HAS_CTIME_R symbol,
558 which indicates to the C program that the ctime_r()
559 routine is available.
561 d_cuserid (d_cuserid.U):
562 This variable conditionally defines the HAS_CUSERID symbol, which
563 indicates to the C program that the cuserid() routine is available
564 to get character login names.
566 d_dbl_dig (d_dbl_dig.U):
567 This variable conditionally defines d_dbl_dig if this system's
568 header files provide DBL_DIG, which is the number of significant
569 digits in a double precision number.
571 d_dbminitproto (d_dbminitproto.U):
572 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
573 which indicates to the C program that the system provides
574 a prototype for the dbminit() function. Otherwise, it is
575 up to the program to supply one.
577 d_difftime (d_difftime.U):
578 This variable conditionally defines the HAS_DIFFTIME symbol, which
579 indicates to the C program that the difftime() routine is available.
582 This variable conditionally defines the HAS_DIRFD constant,
583 which indicates to the C program that dirfd() is available
584 to return the file descriptor of a directory stream.
586 d_dirnamlen (i_dirent.U):
587 This variable conditionally defines DIRNAMLEN, which indicates
588 to the C program that the length of directory entry names is
589 provided by a d_namelen field.
591 d_dlerror (d_dlerror.U):
592 This variable conditionally defines the HAS_DLERROR symbol, which
593 indicates to the C program that the dlerror() routine is available.
595 d_dlopen (d_dlopen.U):
596 This variable conditionally defines the HAS_DLOPEN symbol, which
597 indicates to the C program that the dlopen() routine is available.
599 d_dlsymun (d_dlsymun.U):
600 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
601 indicates that we need to prepend an underscore to the symbol
602 name before calling dlsym().
604 d_dosuid (d_dosuid.U):
605 This variable conditionally defines the symbol DOSUID, which
606 tells the C program that it should insert setuid emulation code
607 on hosts which have setuid #! scripts disabled.
609 d_drand48_r (d_drand48_r.U):
610 This variable conditionally defines the HAS_DRAND48_R symbol,
611 which indicates to the C program that the drand48_r()
612 routine is available.
614 d_drand48proto (d_drand48proto.U):
615 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
616 which indicates to the C program that the system provides
617 a prototype for the drand48() function. Otherwise, it is
618 up to the program to supply one.
621 This variable conditionally defines HAS_DUP2 if dup2() is
622 available to duplicate file descriptors.
624 d_eaccess (d_eaccess.U):
625 This variable conditionally defines the HAS_EACCESS symbol, which
626 indicates to the C program that the eaccess() routine is available.
628 d_endgrent (d_endgrent.U):
629 This variable conditionally defines the HAS_ENDGRENT symbol, which
630 indicates to the C program that the endgrent() routine is available
631 for sequential access of the group database.
633 d_endgrent_r (d_endgrent_r.U):
634 This variable conditionally defines the HAS_ENDGRENT_R symbol,
635 which indicates to the C program that the endgrent_r()
636 routine is available.
638 d_endhent (d_endhent.U):
639 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
640 available to close whatever was being used for host queries.
642 d_endhostent_r (d_endhostent_r.U):
643 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
644 which indicates to the C program that the endhostent_r()
645 routine is available.
647 d_endnent (d_endnent.U):
648 This variable conditionally defines HAS_ENDNETENT if endnetent() is
649 available to close whatever was being used for network queries.
651 d_endnetent_r (d_endnetent_r.U):
652 This variable conditionally defines the HAS_ENDNETENT_R symbol,
653 which indicates to the C program that the endnetent_r()
654 routine is available.
656 d_endpent (d_endpent.U):
657 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
658 available to close whatever was being used for protocol queries.
660 d_endprotoent_r (d_endprotoent_r.U):
661 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
662 which indicates to the C program that the endprotoent_r()
663 routine is available.
665 d_endpwent (d_endpwent.U):
666 This variable conditionally defines the HAS_ENDPWENT symbol, which
667 indicates to the C program that the endpwent() routine is available
668 for sequential access of the passwd database.
670 d_endpwent_r (d_endpwent_r.U):
671 This variable conditionally defines the HAS_ENDPWENT_R symbol,
672 which indicates to the C program that the endpwent_r()
673 routine is available.
675 d_endsent (d_endsent.U):
676 This variable conditionally defines HAS_ENDSERVENT if endservent() is
677 available to close whatever was being used for service queries.
679 d_endservent_r (d_endservent_r.U):
680 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
681 which indicates to the C program that the endservent_r()
682 routine is available.
684 d_eofnblk (nblock_io.U):
685 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
686 when reading from a non-blocking I/O source.
689 This variable conditionally defines the symbols EUNICE and VAX, which
690 alerts the C program that it must deal with ideosyncracies of VMS.
692 d_faststdio (d_faststdio.U):
693 This variable conditionally defines the HAS_FAST_STDIO symbol,
694 which indicates to the C program that the "fast stdio" is available
695 to manipulate the stdio buffers directly.
697 d_fchdir (d_fchdir.U):
698 This variable conditionally defines the HAS_FCHDIR symbol, which
699 indicates to the C program that the fchdir() routine is available.
701 d_fchmod (d_fchmod.U):
702 This variable conditionally defines the HAS_FCHMOD symbol, which
703 indicates to the C program that the fchmod() routine is available
704 to change mode of opened files.
706 d_fchown (d_fchown.U):
707 This variable conditionally defines the HAS_FCHOWN symbol, which
708 indicates to the C program that the fchown() routine is available
709 to change ownership of opened files.
712 This variable conditionally defines the HAS_FCNTL symbol, and indicates
713 whether the fcntl() function exists
715 d_fcntl_can_lock (d_fcntl_can_lock.U):
716 This variable conditionally defines the FCNTL_CAN_LOCK symbol
717 and indicates whether file locking with fcntl() works.
719 d_fd_macros (d_fd_set.U):
720 This variable contains the eventual value of the HAS_FD_MACROS symbol,
721 which indicates if your C compiler knows about the macros which
722 manipulate an fd_set.
724 d_fd_set (d_fd_set.U):
725 This variable contains the eventual value of the HAS_FD_SET symbol,
726 which indicates if your C compiler knows about the fd_set typedef.
728 d_fds_bits (d_fd_set.U):
729 This variable contains the eventual value of the HAS_FDS_BITS symbol,
730 which indicates if your fd_set typedef contains the fds_bits member.
731 If you have an fd_set typedef, but the dweebs who installed it did
732 a half-fast job and neglected to provide the macros to manipulate
733 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
735 d_fgetpos (d_fgetpos.U):
736 This variable conditionally defines HAS_FGETPOS if fgetpos() is
737 available to get the file position indicator.
739 d_finite (d_finite.U):
740 This variable conditionally defines the HAS_FINITE symbol, which
741 indicates to the C program that the finite() routine is available.
743 d_finitel (d_finitel.U):
744 This variable conditionally defines the HAS_FINITEL symbol, which
745 indicates to the C program that the finitel() routine is available.
747 d_flexfnam (d_flexfnam.U):
748 This variable conditionally defines the FLEXFILENAMES symbol, which
749 indicates that the system supports filenames longer than 14 characters.
752 This variable conditionally defines HAS_FLOCK if flock() is
753 available to do file locking.
755 d_flockproto (d_flockproto.U):
756 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
757 which indicates to the C program that the system provides
758 a prototype for the flock() function. Otherwise, it is
759 up to the program to supply one.
762 This variable conditionally defines the HAS_FORK symbol, which
763 indicates to the C program that the fork() routine is available.
765 d_fp_class (d_fp_class.U):
766 This variable conditionally defines the HAS_FP_CLASS symbol, which
767 indicates to the C program that the fp_class() routine is available.
769 d_fpathconf (d_pathconf.U):
770 This variable conditionally defines the HAS_FPATHCONF symbol, which
771 indicates to the C program that the pathconf() routine is available
772 to determine file-system related limits and options associated
773 with a given open file descriptor.
775 d_fpclass (d_fpclass.U):
776 This variable conditionally defines the HAS_FPCLASS symbol, which
777 indicates to the C program that the fpclass() routine is available.
779 d_fpclassify (d_fpclassify.U):
780 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
781 indicates to the C program that the fpclassify() routine is available.
783 d_fpclassl (d_fpclassl.U):
784 This variable conditionally defines the HAS_FPCLASSL symbol, which
785 indicates to the C program that the fpclassl() routine is available.
787 d_fpos64_t (d_fpos64_t.U):
788 This symbol will be defined if the C compiler supports fpos64_t.
790 d_frexpl (d_frexpl.U):
791 This variable conditionally defines the HAS_FREXPL symbol, which
792 indicates to the C program that the frexpl() routine is available.
794 d_fs_data_s (d_fs_data_s.U):
795 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
796 which indicates that the struct fs_data is supported.
798 d_fseeko (d_fseeko.U):
799 This variable conditionally defines the HAS_FSEEKO symbol, which
800 indicates to the C program that the fseeko() routine is available.
802 d_fsetpos (d_fsetpos.U):
803 This variable conditionally defines HAS_FSETPOS if fsetpos() is
804 available to set the file position indicator.
806 d_fstatfs (d_fstatfs.U):
807 This variable conditionally defines the HAS_FSTATFS symbol, which
808 indicates to the C program that the fstatfs() routine is available.
810 d_fstatvfs (d_statvfs.U):
811 This variable conditionally defines the HAS_FSTATVFS symbol, which
812 indicates to the C program that the fstatvfs() routine is available.
815 This variable conditionally defines the HAS_FSYNC symbol, which
816 indicates to the C program that the fsync() routine is available.
818 d_ftello (d_ftello.U):
819 This variable conditionally defines the HAS_FTELLO symbol, which
820 indicates to the C program that the ftello() routine is available.
823 This variable conditionally defines the HAS_FTIME symbol, which indicates
824 that the ftime() routine exists. The ftime() routine is basically
825 a sub-second accuracy clock.
827 d_futimes (d_futimes.U):
828 This variable conditionally defines the HAS_FUTIMES symbol, which
829 indicates to the C program that the futimes() routine is available.
831 d_Gconvert (d_gconvert.U):
832 This variable holds what Gconvert is defined as to convert
833 floating point numbers into strings. By default, Configure
834 sets this macro to use the first of gconvert, gcvt, or sprintf
835 that pass sprintf-%g-like behaviour tests. If perl is using
836 long doubles, the macro uses the first of the following
837 functions that pass Configure's tests: qgcvt, sprintf (if
838 Configure knows how to make sprintf format long doubles--see
839 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
840 The gconvert_preference and gconvert_ld_preference variables
841 can be used to alter Configure's preferences, for doubles and
842 long doubles, respectively. If present, they contain a
843 space-separated list of one or more of the above function
844 names in the order they should be tried.
846 d_Gconvert may be set to override Configure with a platform-
847 specific function. If this function expects a double, a
848 different value may need to be set by the uselongdouble.cbu
849 call-back unit so that long doubles can be formatted without
852 d_getcwd (d_getcwd.U):
853 This variable conditionally defines the HAS_GETCWD symbol, which
854 indicates to the C program that the getcwd() routine is available
855 to get the current working directory.
857 d_getespwnam (d_getespwnam.U):
858 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
859 available to retrieve enchanced (shadow) password entries by name.
861 d_getfsstat (d_getfsstat.U):
862 This variable conditionally defines the HAS_GETFSSTAT symbol, which
863 indicates to the C program that the getfsstat() routine is available.
865 d_getgrent (d_getgrent.U):
866 This variable conditionally defines the HAS_GETGRENT symbol, which
867 indicates to the C program that the getgrent() routine is available
868 for sequential access of the group database.
870 d_getgrent_r (d_getgrent_r.U):
871 This variable conditionally defines the HAS_GETGRENT_R symbol,
872 which indicates to the C program that the getgrent_r()
873 routine is available.
875 d_getgrgid_r (d_getgrgid_r.U):
876 This variable conditionally defines the HAS_GETGRGID_R symbol,
877 which indicates to the C program that the getgrgid_r()
878 routine is available.
880 d_getgrnam_r (d_getgrnam_r.U):
881 This variable conditionally defines the HAS_GETGRNAM_R symbol,
882 which indicates to the C program that the getgrnam_r()
883 routine is available.
885 d_getgrps (d_getgrps.U):
886 This variable conditionally defines the HAS_GETGROUPS symbol, which
887 indicates to the C program that the getgroups() routine is available
888 to get the list of process groups.
890 d_gethbyaddr (d_gethbyad.U):
891 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
892 indicates to the C program that the gethostbyaddr() routine is available
893 to look up hosts by their IP addresses.
895 d_gethbyname (d_gethbynm.U):
896 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
897 indicates to the C program that the gethostbyname() routine is available
898 to look up host names in some data base or other.
900 d_gethent (d_gethent.U):
901 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
902 available to look up host names in some data base or another.
904 d_gethname (d_gethname.U):
905 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
906 indicates to the C program that the gethostname() routine may be
907 used to derive the host name.
909 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
910 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
911 which indicates to the C program that the gethostbyaddr_r()
912 routine is available.
914 d_gethostbyname_r (d_gethostbyname_r.U):
915 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
916 which indicates to the C program that the gethostbyname_r()
917 routine is available.
919 d_gethostent_r (d_gethostent_r.U):
920 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
921 which indicates to the C program that the gethostent_r()
922 routine is available.
924 d_gethostprotos (d_gethostprotos.U):
925 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
926 which indicates to the C program that <netdb.h> supplies
927 prototypes for the various gethost*() functions.
928 See also netdbtype.U for probing for various netdb types.
930 d_getitimer (d_getitimer.U):
931 This variable conditionally defines the HAS_GETITIMER symbol, which
932 indicates to the C program that the getitimer() routine is available.
934 d_getlogin (d_getlogin.U):
935 This variable conditionally defines the HAS_GETLOGIN symbol, which
936 indicates to the C program that the getlogin() routine is available
937 to get the login name.
939 d_getlogin_r (d_getlogin_r.U):
940 This variable conditionally defines the HAS_GETLOGIN_R symbol,
941 which indicates to the C program that the getlogin_r()
942 routine is available.
944 d_getmnt (d_getmnt.U):
945 This variable conditionally defines the HAS_GETMNT symbol, which
946 indicates to the C program that the getmnt() routine is available
947 to retrieve one or more mount info blocks by filename.
949 d_getmntent (d_getmntent.U):
950 This variable conditionally defines the HAS_GETMNTENT symbol, which
951 indicates to the C program that the getmntent() routine is available
952 to iterate through mounted files to get their mount info.
954 d_getnbyaddr (d_getnbyad.U):
955 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
956 indicates to the C program that the getnetbyaddr() routine is available
957 to look up networks by their IP addresses.
959 d_getnbyname (d_getnbynm.U):
960 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
961 indicates to the C program that the getnetbyname() routine is available
962 to look up networks by their names.
964 d_getnent (d_getnent.U):
965 This variable conditionally defines HAS_GETNETENT if getnetent() is
966 available to look up network names in some data base or another.
968 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
969 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
970 which indicates to the C program that the getnetbyaddr_r()
971 routine is available.
973 d_getnetbyname_r (d_getnetbyname_r.U):
974 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
975 which indicates to the C program that the getnetbyname_r()
976 routine is available.
978 d_getnetent_r (d_getnetent_r.U):
979 This variable conditionally defines the HAS_GETNETENT_R symbol,
980 which indicates to the C program that the getnetent_r()
981 routine is available.
983 d_getnetprotos (d_getnetprotos.U):
984 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
985 which indicates to the C program that <netdb.h> supplies
986 prototypes for the various getnet*() functions.
987 See also netdbtype.U for probing for various netdb types.
989 d_getpagsz (d_getpagsz.U):
990 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
991 is available to get the system page size.
993 d_getpbyname (d_getprotby.U):
994 This variable conditionally defines the HAS_GETPROTOBYNAME
995 symbol, which indicates to the C program that the
996 getprotobyname() routine is available to look up protocols
999 d_getpbynumber (d_getprotby.U):
1000 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1001 symbol, which indicates to the C program that the
1002 getprotobynumber() routine is available to look up protocols
1005 d_getpent (d_getpent.U):
1006 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1007 available to look up protocols in some data base or another.
1009 d_getpgid (d_getpgid.U):
1010 This variable conditionally defines the HAS_GETPGID symbol, which
1011 indicates to the C program that the getpgid(pid) function
1012 is available to get the process group id.
1014 d_getpgrp (d_getpgrp.U):
1015 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1016 available to get the current process group.
1018 d_getpgrp2 (d_getpgrp2.U):
1019 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1020 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1021 is available to get the current process group.
1023 d_getppid (d_getppid.U):
1024 This variable conditionally defines the HAS_GETPPID symbol, which
1025 indicates to the C program that the getppid() routine is available
1026 to get the parent process ID.
1028 d_getprior (d_getprior.U):
1029 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1030 is available to get a process's priority.
1032 d_getprotobyname_r (d_getprotobyname_r.U):
1033 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1034 which indicates to the C program that the getprotobyname_r()
1035 routine is available.
1037 d_getprotobynumber_r (d_getprotobynumber_r.U):
1038 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1039 which indicates to the C program that the getprotobynumber_r()
1040 routine is available.
1042 d_getprotoent_r (d_getprotoent_r.U):
1043 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1044 which indicates to the C program that the getprotoent_r()
1045 routine is available.
1047 d_getprotoprotos (d_getprotoprotos.U):
1048 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1049 which indicates to the C program that <netdb.h> supplies
1050 prototypes for the various getproto*() functions.
1051 See also netdbtype.U for probing for various netdb types.
1053 d_getprpwnam (d_getprpwnam.U):
1054 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1055 available to retrieve protected (shadow) password entries by name.
1057 d_getpwent (d_getpwent.U):
1058 This variable conditionally defines the HAS_GETPWENT symbol, which
1059 indicates to the C program that the getpwent() routine is available
1060 for sequential access of the passwd database.
1062 d_getpwent_r (d_getpwent_r.U):
1063 This variable conditionally defines the HAS_GETPWENT_R symbol,
1064 which indicates to the C program that the getpwent_r()
1065 routine is available.
1067 d_getpwnam_r (d_getpwnam_r.U):
1068 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1069 which indicates to the C program that the getpwnam_r()
1070 routine is available.
1072 d_getpwuid_r (d_getpwuid_r.U):
1073 This variable conditionally defines the HAS_GETPWUID_R symbol,
1074 which indicates to the C program that the getpwuid_r()
1075 routine is available.
1077 d_getsbyname (d_getsrvby.U):
1078 This variable conditionally defines the HAS_GETSERVBYNAME
1079 symbol, which indicates to the C program that the
1080 getservbyname() routine is available to look up services
1083 d_getsbyport (d_getsrvby.U):
1084 This variable conditionally defines the HAS_GETSERVBYPORT
1085 symbol, which indicates to the C program that the
1086 getservbyport() routine is available to look up services
1089 d_getsent (d_getsent.U):
1090 This variable conditionally defines HAS_GETSERVENT if getservent() is
1091 available to look up network services in some data base or another.
1093 d_getservbyname_r (d_getservbyname_r.U):
1094 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1095 which indicates to the C program that the getservbyname_r()
1096 routine is available.
1098 d_getservbyport_r (d_getservbyport_r.U):
1099 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1100 which indicates to the C program that the getservbyport_r()
1101 routine is available.
1103 d_getservent_r (d_getservent_r.U):
1104 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1105 which indicates to the C program that the getservent_r()
1106 routine is available.
1108 d_getservprotos (d_getservprotos.U):
1109 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1110 which indicates to the C program that <netdb.h> supplies
1111 prototypes for the various getserv*() functions.
1112 See also netdbtype.U for probing for various netdb types.
1114 d_getspnam (d_getspnam.U):
1115 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1116 available to retrieve SysV shadow password entries by name.
1118 d_getspnam_r (d_getspnam_r.U):
1119 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1120 which indicates to the C program that the getspnam_r()
1121 routine is available.
1123 d_gettimeod (d_ftime.U):
1124 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1125 indicates that the gettimeofday() system call exists (to obtain a
1126 sub-second accuracy clock). You should probably include <sys/resource.h>.
1128 d_gmtime_r (d_gmtime_r.U):
1129 This variable conditionally defines the HAS_GMTIME_R symbol,
1130 which indicates to the C program that the gmtime_r()
1131 routine is available.
1133 d_gnulibc (d_gnulibc.U):
1134 Defined if we're dealing with the GNU C Library.
1136 d_grpasswd (i_grp.U):
1137 This variable conditionally defines GRPASSWD, which indicates
1138 that struct group in <grp.h> contains gr_passwd.
1140 d_hasmntopt (d_hasmntopt.U):
1141 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1142 indicates to the C program that the hasmntopt() routine is available
1143 to query the mount options of file systems.
1145 d_htonl (d_htonl.U):
1146 This variable conditionally defines HAS_HTONL if htonl() and its
1147 friends are available to do network order byte swapping.
1149 d_ilogbl (d_ilogbl.U):
1150 This variable conditionally defines the HAS_ILOGBL symbol, which
1151 indicates to the C program that the ilogbl() routine is available.
1152 If scalbnl is also present we can emulate frexpl.
1154 d_inc_version_list (inc_version_list.U):
1155 This variable conditionally defines PERL_INC_VERSION_LIST.
1156 It is set to undef when PERL_INC_VERSION_LIST is empty.
1158 d_index (d_strchr.U):
1159 This variable conditionally defines HAS_INDEX if index() and
1160 rindex() are available for string searching.
1162 d_inetaton (d_inetaton.U):
1163 This variable conditionally defines the HAS_INET_ATON symbol, which
1164 indicates to the C program that the inet_aton() function is available
1165 to parse IP address "dotted-quad" strings.
1167 d_int64_t (d_int64_t.U):
1168 This symbol will be defined if the C compiler supports int64_t.
1170 d_isascii (d_isascii.U):
1171 This variable conditionally defines the HAS_ISASCII constant,
1172 which indicates to the C program that isascii() is available.
1174 d_isfinite (d_isfinite.U):
1175 This variable conditionally defines the HAS_ISFINITE symbol, which
1176 indicates to the C program that the isfinite() routine is available.
1178 d_isinf (d_isinf.U):
1179 This variable conditionally defines the HAS_ISINF symbol, which
1180 indicates to the C program that the isinf() routine is available.
1182 d_isnan (d_isnan.U):
1183 This variable conditionally defines the HAS_ISNAN symbol, which
1184 indicates to the C program that the isnan() routine is available.
1186 d_isnanl (d_isnanl.U):
1187 This variable conditionally defines the HAS_ISNANL symbol, which
1188 indicates to the C program that the isnanl() routine is available.
1190 d_killpg (d_killpg.U):
1191 This variable conditionally defines the HAS_KILLPG symbol, which
1192 indicates to the C program that the killpg() routine is available
1193 to kill process groups.
1195 d_lchown (d_lchown.U):
1196 This variable conditionally defines the HAS_LCHOWN symbol, which
1197 indicates to the C program that the lchown() routine is available
1198 to operate on a symbolic link (instead of following the link).
1200 d_ldbl_dig (d_ldbl_dig.U):
1201 This variable conditionally defines d_ldbl_dig if this system's
1202 header files provide LDBL_DIG, which is the number of significant
1203 digits in a long double precision number.
1205 d_libm_lib_version (d_libm_lib_version.U):
1206 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1207 which indicates to the C program that math.h defines _LIB_VERSION
1208 being available in libm
1211 This variable conditionally defines HAS_LINK if link() is
1212 available to create hard links.
1214 d_localtime_r (d_localtime_r.U):
1215 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1216 which indicates to the C program that the localtime_r()
1217 routine is available.
1219 d_locconv (d_locconv.U):
1220 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1221 available for numeric and monetary formatting conventions.
1223 d_lockf (d_lockf.U):
1224 This variable conditionally defines HAS_LOCKF if lockf() is
1225 available to do file locking.
1227 d_longdbl (d_longdbl.U):
1228 This variable conditionally defines HAS_LONG_DOUBLE if
1229 the long double type is supported.
1231 d_longlong (d_longlong.U):
1232 This variable conditionally defines HAS_LONG_LONG if
1233 the long long type is supported.
1235 d_lseekproto (d_lseekproto.U):
1236 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1237 which indicates to the C program that the system provides
1238 a prototype for the lseek() function. Otherwise, it is
1239 up to the program to supply one.
1241 d_lstat (d_lstat.U):
1242 This variable conditionally defines HAS_LSTAT if lstat() is
1243 available to do file stats on symbolic links.
1245 d_madvise (d_madvise.U):
1246 This variable conditionally defines HAS_MADVISE if madvise() is
1247 available to map a file into memory.
1249 d_malloc_good_size (d_malloc_size.U):
1250 This symbol, if defined, indicates that the malloc_good_size
1251 routine is available for use.
1253 d_malloc_size (d_malloc_size.U):
1254 This symbol, if defined, indicates that the malloc_size
1255 routine is available for use.
1257 d_mblen (d_mblen.U):
1258 This variable conditionally defines the HAS_MBLEN symbol, which
1259 indicates to the C program that the mblen() routine is available
1260 to find the number of bytes in a multibye character.
1262 d_mbstowcs (d_mbstowcs.U):
1263 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1264 indicates to the C program that the mbstowcs() routine is available
1265 to convert a multibyte string into a wide character string.
1267 d_mbtowc (d_mbtowc.U):
1268 This variable conditionally defines the HAS_MBTOWC symbol, which
1269 indicates to the C program that the mbtowc() routine is available
1270 to convert multibyte to a wide character.
1272 d_memchr (d_memchr.U):
1273 This variable conditionally defines the HAS_MEMCHR symbol, which
1274 indicates to the C program that the memchr() routine is available
1275 to locate characters within a C string.
1277 d_memcmp (d_memcmp.U):
1278 This variable conditionally defines the HAS_MEMCMP symbol, which
1279 indicates to the C program that the memcmp() routine is available
1280 to compare blocks of memory.
1282 d_memcpy (d_memcpy.U):
1283 This variable conditionally defines the HAS_MEMCPY symbol, which
1284 indicates to the C program that the memcpy() routine is available
1285 to copy blocks of memory.
1287 d_memmove (d_memmove.U):
1288 This variable conditionally defines the HAS_MEMMOVE symbol, which
1289 indicates to the C program that the memmove() routine is available
1290 to copy potentatially overlapping blocks of memory.
1292 d_memset (d_memset.U):
1293 This variable conditionally defines the HAS_MEMSET symbol, which
1294 indicates to the C program that the memset() routine is available
1295 to set blocks of memory.
1297 d_mkdir (d_mkdir.U):
1298 This variable conditionally defines the HAS_MKDIR symbol, which
1299 indicates to the C program that the mkdir() routine is available
1300 to create directories..
1302 d_mkdtemp (d_mkdtemp.U):
1303 This variable conditionally defines the HAS_MKDTEMP symbol, which
1304 indicates to the C program that the mkdtemp() routine is available
1305 to exclusively create a uniquely named temporary directory.
1307 d_mkfifo (d_mkfifo.U):
1308 This variable conditionally defines the HAS_MKFIFO symbol, which
1309 indicates to the C program that the mkfifo() routine is available.
1311 d_mkstemp (d_mkstemp.U):
1312 This variable conditionally defines the HAS_MKSTEMP symbol, which
1313 indicates to the C program that the mkstemp() routine is available
1314 to exclusively create and open a uniquely named temporary file.
1316 d_mkstemps (d_mkstemps.U):
1317 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1318 indicates to the C program that the mkstemps() routine is available
1319 to exclusively create and open a uniquely named (with a suffix)
1322 d_mktime (d_mktime.U):
1323 This variable conditionally defines the HAS_MKTIME symbol, which
1324 indicates to the C program that the mktime() routine is available.
1327 This variable conditionally defines HAS_MMAP if mmap() is
1328 available to map a file into memory.
1330 d_modfl (d_modfl.U):
1331 This variable conditionally defines the HAS_MODFL symbol, which
1332 indicates to the C program that the modfl() routine is available.
1334 d_modfl_pow32_bug (d_modfl.U):
1335 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1336 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1337 For example from 4294967303.150000 one would get 4294967302.000000
1338 and 1.150000. The bug has been seen in certain versions of glibc,
1339 release 2.2.2 is known to be okay.
1341 d_modflproto (d_modfl.U):
1342 This symbol, if defined, indicates that the system provides
1343 a prototype for the modfl() function. Otherwise, it is up
1344 to the program to supply one. C99 says it should be
1345 long double modfl(long double, long double *);
1347 d_mprotect (d_mprotect.U):
1348 This variable conditionally defines HAS_MPROTECT if mprotect() is
1349 available to modify the access protection of a memory mapped file.
1352 This variable conditionally defines the HAS_MSG symbol, which
1353 indicates that the entire msg*(2) library is present.
1355 d_msg_ctrunc (d_socket.U):
1356 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1357 which indicates that the MSG_CTRUNC is available. #ifdef is
1358 not enough because it may be an enum, glibc has been known to do this.
1360 d_msg_dontroute (d_socket.U):
1361 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1362 which indicates that the MSG_DONTROUTE is available. #ifdef is
1363 not enough because it may be an enum, glibc has been known to do this.
1365 d_msg_oob (d_socket.U):
1366 This variable conditionally defines the HAS_MSG_OOB symbol,
1367 which indicates that the MSG_OOB is available. #ifdef is
1368 not enough because it may be an enum, glibc has been known to do this.
1370 d_msg_peek (d_socket.U):
1371 This variable conditionally defines the HAS_MSG_PEEK symbol,
1372 which indicates that the MSG_PEEK is available. #ifdef is
1373 not enough because it may be an enum, glibc has been known to do this.
1375 d_msg_proxy (d_socket.U):
1376 This variable conditionally defines the HAS_MSG_PROXY symbol,
1377 which indicates that the MSG_PROXY is available. #ifdef is
1378 not enough because it may be an enum, glibc has been known to do this.
1380 d_msgctl (d_msgctl.U):
1381 This variable conditionally defines the HAS_MSGCTL symbol, which
1382 indicates to the C program that the msgctl() routine is available.
1384 d_msgget (d_msgget.U):
1385 This variable conditionally defines the HAS_MSGGET symbol, which
1386 indicates to the C program that the msgget() routine is available.
1388 d_msghdr_s (d_msghdr_s.U):
1389 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1390 which indicates that the struct msghdr is supported.
1392 d_msgrcv (d_msgrcv.U):
1393 This variable conditionally defines the HAS_MSGRCV symbol, which
1394 indicates to the C program that the msgrcv() routine is available.
1396 d_msgsnd (d_msgsnd.U):
1397 This variable conditionally defines the HAS_MSGSND symbol, which
1398 indicates to the C program that the msgsnd() routine is available.
1400 d_msync (d_msync.U):
1401 This variable conditionally defines HAS_MSYNC if msync() is
1402 available to synchronize a mapped file.
1404 d_munmap (d_munmap.U):
1405 This variable conditionally defines HAS_MUNMAP if munmap() is
1406 available to unmap a region mapped by mmap().
1408 d_mymalloc (mallocsrc.U):
1409 This variable conditionally defines MYMALLOC in case other parts
1410 of the source want to take special action if MYMALLOC is used.
1411 This may include different sorts of profiling or error detection.
1414 This variable conditionally defines the HAS_NICE symbol, which
1415 indicates to the C program that the nice() routine is available.
1417 d_nl_langinfo (d_nl_langinfo.U):
1418 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1419 indicates to the C program that the nl_langinfo() routine is available.
1421 d_nv_preserves_uv (perlxv.U):
1422 This variable indicates whether a variable of type nvtype
1423 can preserve all the bits a variable of type uvtype.
1425 d_nv_zero_is_allbits_zero (perlxv.U):
1426 This variable indicates whether a variable of type nvtype
1427 stores 0.0 in memory as all bits zero.
1429 d_off64_t (d_off64_t.U):
1430 This symbol will be defined if the C compiler supports off64_t.
1432 d_old_pthread_create_joinable (d_pthrattrj.U):
1433 This variable conditionally defines pthread_create_joinable.
1434 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1436 d_oldpthreads (usethreads.U):
1437 This variable conditionally defines the OLD_PTHREADS_API symbol,
1438 and indicates that Perl should be built to use the old
1439 draft POSIX threads API. This is only potentially meaningful if
1442 d_oldsock (d_socket.U):
1443 This variable conditionally defines the OLDSOCKET symbol, which
1444 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1446 d_open3 (d_open3.U):
1447 This variable conditionally defines the HAS_OPEN3 manifest constant,
1448 which indicates to the C program that the 3 argument version of
1449 the open(2) function is available.
1451 d_pathconf (d_pathconf.U):
1452 This variable conditionally defines the HAS_PATHCONF symbol, which
1453 indicates to the C program that the pathconf() routine is available
1454 to determine file-system related limits and options associated
1455 with a given filename.
1457 d_pause (d_pause.U):
1458 This variable conditionally defines the HAS_PAUSE symbol, which
1459 indicates to the C program that the pause() routine is available
1460 to suspend a process until a signal is received.
1462 d_perl_otherlibdirs (otherlibdirs.U):
1463 This variable conditionally defines PERL_OTHERLIBDIRS, which
1464 contains a colon-separated set of paths for the perl binary to
1465 include in @INC. See also otherlibdirs.
1467 d_phostname (d_gethname.U):
1468 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1469 contains the shell command which, when fed to popen(), may be
1470 used to derive the host name.
1473 This variable conditionally defines the HAS_PIPE symbol, which
1474 indicates to the C program that the pipe() routine is available
1475 to create an inter-process channel.
1478 This variable conditionally defines the HAS_POLL symbol, which
1479 indicates to the C program that the poll() routine is available
1480 to poll active file descriptors.
1482 d_portable (d_portable.U):
1483 This variable conditionally defines the PORTABLE symbol, which
1484 indicates to the C program that it should not assume that it is
1485 running on the machine it was compiled on.
1487 d_PRId64 (quadfio.U):
1488 This variable conditionally defines the PERL_PRId64 symbol, which
1489 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1491 d_PRIeldbl (longdblfio.U):
1492 This variable conditionally defines the PERL_PRIfldbl symbol, which
1493 indiciates that stdio has a symbol to print long doubles.
1495 d_PRIEUldbl (longdblfio.U):
1496 This variable conditionally defines the PERL_PRIfldbl symbol, which
1497 indiciates that stdio has a symbol to print long doubles.
1498 The 'U' in the name is to separate this from d_PRIeldbl so that even
1499 case-blind systems can see the difference.
1501 d_PRIfldbl (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_PRIFUldbl (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_PRIfldbl so that even
1509 case-blind systems can see the difference.
1511 d_PRIgldbl (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_PRIGUldbl (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_PRIgldbl so that even
1519 case-blind systems can see the difference.
1521 d_PRIi64 (quadfio.U):
1522 This variable conditionally defines the PERL_PRIi64 symbol, which
1523 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1525 d_PRIo64 (quadfio.U):
1526 This variable conditionally defines the PERL_PRIo64 symbol, which
1527 indiciates that stdio has a symbol to print 64-bit octal numbers.
1529 d_PRIu64 (quadfio.U):
1530 This variable conditionally defines the PERL_PRIu64 symbol, which
1531 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1534 d_PRIx64 (quadfio.U):
1535 This variable conditionally defines the PERL_PRIx64 symbol, which
1536 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1538 d_PRIXU64 (quadfio.U):
1539 This variable conditionally defines the PERL_PRIXU64 symbol, which
1540 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1541 The 'U' in the name is to separate this from d_PRIx64 so that even
1542 case-blind systems can see the difference.
1544 d_procselfexe (d_procselfexe.U):
1545 Defined if $procselfexe is symlink to the absolute
1546 pathname of the executing program.
1548 d_pthread_atfork (d_pthread_atfork.U):
1549 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1550 which indicates to the C program that the pthread_atfork()
1551 routine is available.
1553 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1554 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1555 pthread_attr_setscope() is available to set the contention scope
1556 attribute of a thread attribute object.
1558 d_pthread_yield (d_pthread_y.U):
1559 This variable conditionally defines the HAS_PTHREAD_YIELD
1560 symbol if the pthread_yield routine is available to yield
1561 the execution of the current thread.
1564 This variable conditionally defines PWAGE, which indicates
1565 that struct passwd contains pw_age.
1567 d_pwchange (i_pwd.U):
1568 This variable conditionally defines PWCHANGE, which indicates
1569 that struct passwd contains pw_change.
1571 d_pwclass (i_pwd.U):
1572 This variable conditionally defines PWCLASS, which indicates
1573 that struct passwd contains pw_class.
1575 d_pwcomment (i_pwd.U):
1576 This variable conditionally defines PWCOMMENT, which indicates
1577 that struct passwd contains pw_comment.
1579 d_pwexpire (i_pwd.U):
1580 This variable conditionally defines PWEXPIRE, which indicates
1581 that struct passwd contains pw_expire.
1583 d_pwgecos (i_pwd.U):
1584 This variable conditionally defines PWGECOS, which indicates
1585 that struct passwd contains pw_gecos.
1587 d_pwpasswd (i_pwd.U):
1588 This variable conditionally defines PWPASSWD, which indicates
1589 that struct passwd contains pw_passwd.
1591 d_pwquota (i_pwd.U):
1592 This variable conditionally defines PWQUOTA, which indicates
1593 that struct passwd contains pw_quota.
1595 d_qgcvt (d_qgcvt.U):
1596 This variable conditionally defines the HAS_QGCVT symbol, which
1597 indicates to the C program that the qgcvt() routine is available.
1599 d_quad (quadtype.U):
1600 This variable, if defined, tells that there's a 64-bit integer type,
1603 d_random_r (d_random_r.U):
1604 This variable conditionally defines the HAS_RANDOM_R symbol,
1605 which indicates to the C program that the random_r()
1606 routine is available.
1608 d_readdir (d_readdir.U):
1609 This variable conditionally defines HAS_READDIR if readdir() is
1610 available to read directory entries.
1612 d_readdir64_r (d_readdir64_r.U):
1613 This variable conditionally defines the HAS_READDIR64_R symbol,
1614 which indicates to the C program that the readdir64_r()
1615 routine is available.
1617 d_readdir_r (d_readdir_r.U):
1618 This variable conditionally defines the HAS_READDIR_R symbol,
1619 which indicates to the C program that the readdir_r()
1620 routine is available.
1622 d_readlink (d_readlink.U):
1623 This variable conditionally defines the HAS_READLINK symbol, which
1624 indicates to the C program that the readlink() routine is available
1625 to read the value of a symbolic link.
1627 d_readv (d_readv.U):
1628 This variable conditionally defines the HAS_READV symbol, which
1629 indicates to the C program that the readv() routine is available.
1631 d_recvmsg (d_recvmsg.U):
1632 This variable conditionally defines the HAS_RECVMSG symbol, which
1633 indicates to the C program that the recvmsg() routine is available.
1635 d_rename (d_rename.U):
1636 This variable conditionally defines the HAS_RENAME symbol, which
1637 indicates to the C program that the rename() routine is available
1640 d_rewinddir (d_readdir.U):
1641 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1644 d_rmdir (d_rmdir.U):
1645 This variable conditionally defines HAS_RMDIR if rmdir() is
1646 available to remove directories.
1648 d_safebcpy (d_safebcpy.U):
1649 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1650 the bcopy() routine can do overlapping copies. Normally, you
1651 should probably use memmove().
1653 d_safemcpy (d_safemcpy.U):
1654 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1655 the memcpy() routine can do overlapping copies.
1656 For overlapping copies, memmove() should be used, if available.
1658 d_sanemcmp (d_sanemcmp.U):
1659 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1660 the memcpy() routine is available and can be used to compare relative
1661 magnitudes of chars with their high bits set.
1663 d_sbrkproto (d_sbrkproto.U):
1664 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1665 which indicates to the C program that the system provides
1666 a prototype for the sbrk() function. Otherwise, it is
1667 up to the program to supply one.
1669 d_scalbnl (d_scalbnl.U):
1670 This variable conditionally defines the HAS_SCALBNL symbol, which
1671 indicates to the C program that the scalbnl() routine is available.
1672 If ilogbl is also present we can emulate frexpl.
1674 d_sched_yield (d_pthread_y.U):
1675 This variable conditionally defines the HAS_SCHED_YIELD
1676 symbol if the sched_yield routine is available to yield
1677 the execution of the current thread.
1679 d_scm_rights (d_socket.U):
1680 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1681 which indicates that the SCM_RIGHTS is available. #ifdef is
1682 not enough because it may be an enum, glibc has been known to do this.
1684 d_SCNfldbl (longdblfio.U):
1685 This variable conditionally defines the PERL_PRIfldbl symbol, which
1686 indiciates that stdio has a symbol to scan long doubles.
1688 d_seekdir (d_readdir.U):
1689 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1692 d_select (d_select.U):
1693 This variable conditionally defines HAS_SELECT if select() is
1694 available to select active file descriptors. A <sys/time.h>
1695 inclusion may be necessary for the timeout field.
1698 This variable conditionally defines the HAS_SEM symbol, which
1699 indicates that the entire sem*(2) library is present.
1701 d_semctl (d_semctl.U):
1702 This variable conditionally defines the HAS_SEMCTL symbol, which
1703 indicates to the C program that the semctl() routine is available.
1705 d_semctl_semid_ds (d_union_semun.U):
1706 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1707 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1709 d_semctl_semun (d_union_semun.U):
1710 This variable conditionally defines USE_SEMCTL_SEMUN, which
1711 indicates that union semun is to be used for semctl IPC_STAT.
1713 d_semget (d_semget.U):
1714 This variable conditionally defines the HAS_SEMGET symbol, which
1715 indicates to the C program that the semget() routine is available.
1717 d_semop (d_semop.U):
1718 This variable conditionally defines the HAS_SEMOP symbol, which
1719 indicates to the C program that the semop() routine is available.
1721 d_sendmsg (d_sendmsg.U):
1722 This variable conditionally defines the HAS_SENDMSG symbol, which
1723 indicates to the C program that the sendmsg() routine is available.
1725 d_setegid (d_setegid.U):
1726 This variable conditionally defines the HAS_SETEGID symbol, which
1727 indicates to the C program that the setegid() routine is available
1728 to change the effective gid of the current program.
1730 d_seteuid (d_seteuid.U):
1731 This variable conditionally defines the HAS_SETEUID symbol, which
1732 indicates to the C program that the seteuid() routine is available
1733 to change the effective uid of the current program.
1735 d_setgrent (d_setgrent.U):
1736 This variable conditionally defines the HAS_SETGRENT symbol, which
1737 indicates to the C program that the setgrent() routine is available
1738 for initializing sequential access to the group database.
1740 d_setgrent_r (d_setgrent_r.U):
1741 This variable conditionally defines the HAS_SETGRENT_R symbol,
1742 which indicates to the C program that the setgrent_r()
1743 routine is available.
1745 d_setgrps (d_setgrps.U):
1746 This variable conditionally defines the HAS_SETGROUPS symbol, which
1747 indicates to the C program that the setgroups() routine is available
1748 to set the list of process groups.
1750 d_sethent (d_sethent.U):
1751 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1754 d_sethostent_r (d_sethostent_r.U):
1755 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1756 which indicates to the C program that the sethostent_r()
1757 routine is available.
1759 d_setitimer (d_setitimer.U):
1760 This variable conditionally defines the HAS_SETITIMER symbol, which
1761 indicates to the C program that the setitimer() routine is available.
1763 d_setlinebuf (d_setlnbuf.U):
1764 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1765 indicates to the C program that the setlinebuf() routine is available
1766 to change stderr or stdout from block-buffered or unbuffered to a
1769 d_setlocale (d_setlocale.U):
1770 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1771 available to handle locale-specific ctype implementations.
1773 d_setlocale_r (d_setlocale_r.U):
1774 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1775 which indicates to the C program that the setlocale_r()
1776 routine is available.
1778 d_setnent (d_setnent.U):
1779 This variable conditionally defines HAS_SETNETENT if setnetent() is
1782 d_setnetent_r (d_setnetent_r.U):
1783 This variable conditionally defines the HAS_SETNETENT_R symbol,
1784 which indicates to the C program that the setnetent_r()
1785 routine is available.
1787 d_setpent (d_setpent.U):
1788 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1791 d_setpgid (d_setpgid.U):
1792 This variable conditionally defines the HAS_SETPGID symbol if the
1793 setpgid(pid, gpid) function is available to set process group ID.
1795 d_setpgrp (d_setpgrp.U):
1796 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1797 available to set the current process group.
1799 d_setpgrp2 (d_setpgrp2.U):
1800 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1801 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1802 is available to set the current process group.
1804 d_setprior (d_setprior.U):
1805 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1806 is available to set a process's priority.
1808 d_setproctitle (d_setproctitle.U):
1809 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1810 which indicates to the C program that the setproctitle() routine
1813 d_setprotoent_r (d_setprotoent_r.U):
1814 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1815 which indicates to the C program that the setprotoent_r()
1816 routine is available.
1818 d_setpwent (d_setpwent.U):
1819 This variable conditionally defines the HAS_SETPWENT symbol, which
1820 indicates to the C program that the setpwent() routine is available
1821 for initializing sequential access to the passwd database.
1823 d_setpwent_r (d_setpwent_r.U):
1824 This variable conditionally defines the HAS_SETPWENT_R symbol,
1825 which indicates to the C program that the setpwent_r()
1826 routine is available.
1828 d_setregid (d_setregid.U):
1829 This variable conditionally defines HAS_SETREGID if setregid() is
1830 available to change the real and effective gid of the current
1833 d_setresgid (d_setregid.U):
1834 This variable conditionally defines HAS_SETRESGID if setresgid() is
1835 available to change the real, effective and saved gid of the current
1838 d_setresuid (d_setreuid.U):
1839 This variable conditionally defines HAS_SETREUID if setresuid() is
1840 available to change the real, effective and saved uid of the current
1843 d_setreuid (d_setreuid.U):
1844 This variable conditionally defines HAS_SETREUID if setreuid() is
1845 available to change the real and effective uid of the current
1848 d_setrgid (d_setrgid.U):
1849 This variable conditionally defines the HAS_SETRGID symbol, which
1850 indicates to the C program that the setrgid() routine is available
1851 to change the real gid of the current program.
1853 d_setruid (d_setruid.U):
1854 This variable conditionally defines the HAS_SETRUID symbol, which
1855 indicates to the C program that the setruid() routine is available
1856 to change the real uid of the current program.
1858 d_setsent (d_setsent.U):
1859 This variable conditionally defines HAS_SETSERVENT if setservent() is
1862 d_setservent_r (d_setservent_r.U):
1863 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1864 which indicates to the C program that the setservent_r()
1865 routine is available.
1867 d_setsid (d_setsid.U):
1868 This variable conditionally defines HAS_SETSID if setsid() is
1869 available to set the process group ID.
1871 d_setvbuf (d_setvbuf.U):
1872 This variable conditionally defines the HAS_SETVBUF symbol, which
1873 indicates to the C program that the setvbuf() routine is available
1874 to change buffering on an open stdio stream.
1877 This variable conditionally defines the USE_SFIO symbol,
1878 and indicates whether sfio is available (and should be used).
1881 This variable conditionally defines the HAS_SHM symbol, which
1882 indicates that the entire shm*(2) library is present.
1884 d_shmat (d_shmat.U):
1885 This variable conditionally defines the HAS_SHMAT symbol, which
1886 indicates to the C program that the shmat() routine is available.
1888 d_shmatprototype (d_shmat.U):
1889 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1890 symbol, which indicates that sys/shm.h has a prototype for
1893 d_shmctl (d_shmctl.U):
1894 This variable conditionally defines the HAS_SHMCTL symbol, which
1895 indicates to the C program that the shmctl() routine is available.
1897 d_shmdt (d_shmdt.U):
1898 This variable conditionally defines the HAS_SHMDT symbol, which
1899 indicates to the C program that the shmdt() routine is available.
1901 d_shmget (d_shmget.U):
1902 This variable conditionally defines the HAS_SHMGET symbol, which
1903 indicates to the C program that the shmget() routine is available.
1905 d_sigaction (d_sigaction.U):
1906 This variable conditionally defines the HAS_SIGACTION symbol, which
1907 indicates that the Vr4 sigaction() routine is available.
1909 d_sigprocmask (d_sigprocmask.U):
1910 This variable conditionally defines HAS_SIGPROCMASK
1911 if sigprocmask() is available to examine or change the signal mask
1912 of the calling process.
1914 d_sigsetjmp (d_sigsetjmp.U):
1915 This variable conditionally defines the HAS_SIGSETJMP symbol,
1916 which indicates that the sigsetjmp() routine is available to
1917 call setjmp() and optionally save the process's signal mask.
1919 d_sitearch (sitearch.U):
1920 This variable conditionally defines SITEARCH to hold the pathname
1921 of architecture-dependent library files for $package. If
1922 $sitearch is the same as $archlib, then this is set to undef.
1924 d_snprintf (d_snprintf.U):
1925 This variable conditionally defines the HAS_SNPRINTF symbol, which
1926 indicates to the C program that the snprintf () library function
1929 d_sockatmark (d_sockatmark.U):
1930 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1931 indicates to the C program that the sockatmark() routine is available.
1933 d_sockatmarkproto (d_sockatmarkproto.U):
1934 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1935 which indicates to the C program that the system provides
1936 a prototype for the sockatmark() function. Otherwise, it is
1937 up to the program to supply one.
1939 d_socket (d_socket.U):
1940 This variable conditionally defines HAS_SOCKET, which indicates
1941 that the BSD socket interface is supported.
1943 d_socklen_t (d_socklen_t.U):
1944 This symbol will be defined if the C compiler supports socklen_t.
1946 d_sockpair (d_socket.U):
1947 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1948 indicates that the BSD socketpair() is supported.
1950 d_socks5_init (d_socks5_init.U):
1951 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1952 indicates to the C program that the socks5_init() routine is available.
1954 d_sprintf_returns_strlen (d_sprintf_len.U):
1955 This variable defines whether sprintf returns the length of the string
1956 (as per the ANSI spec). Some C libraries retain compatibility with
1957 pre-ANSI C and return a pointer to the passed in buffer; for these
1958 this variable will be undef.
1960 d_sqrtl (d_sqrtl.U):
1961 This variable conditionally defines the HAS_SQRTL symbol, which
1962 indicates to the C program that the sqrtl() routine is available.
1964 d_srand48_r (d_srand48_r.U):
1965 This variable conditionally defines the HAS_SRAND48_R symbol,
1966 which indicates to the C program that the srand48_r()
1967 routine is available.
1969 d_srandom_r (d_srandom_r.U):
1970 This variable conditionally defines the HAS_SRANDOM_R symbol,
1971 which indicates to the C program that the srandom_r()
1972 routine is available.
1974 d_sresgproto (d_sresgproto.U):
1975 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1976 which indicates to the C program that the system provides
1977 a prototype for the setresgid() function. Otherwise, it is
1978 up to the program to supply one.
1980 d_sresuproto (d_sresuproto.U):
1981 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1982 which indicates to the C program that the system provides
1983 a prototype for the setresuid() function. Otherwise, it is
1984 up to the program to supply one.
1986 d_statblks (d_statblks.U):
1987 This variable conditionally defines USE_STAT_BLOCKS
1988 if this system has a stat structure declaring
1989 st_blksize and st_blocks.
1991 d_statfs_f_flags (d_statfs_f_flags.U):
1992 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1993 symbol, which indicates to struct statfs from has f_flags member.
1994 This kind of struct statfs is coming from sys/mount.h (BSD),
1995 not from sys/statfs.h (SYSV).
1997 d_statfs_s (d_statfs_s.U):
1998 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1999 which indicates that the struct statfs is supported.
2001 d_statvfs (d_statvfs.U):
2002 This variable conditionally defines the HAS_STATVFS symbol, which
2003 indicates to the C program that the statvfs() routine is available.
2005 d_stdio_cnt_lval (d_stdstdio.U):
2006 This variable conditionally defines STDIO_CNT_LVALUE if the
2007 FILE_cnt macro can be used as an lvalue.
2009 d_stdio_ptr_lval (d_stdstdio.U):
2010 This variable conditionally defines STDIO_PTR_LVALUE if the
2011 FILE_ptr macro can be used as an lvalue.
2013 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2014 This symbol is defined if using the FILE_ptr macro as an lvalue
2015 to increase the pointer by n leaves File_cnt(fp) unchanged.
2017 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2018 This symbol is defined if using the FILE_ptr macro as an lvalue
2019 to increase the pointer by n has the side effect of decreasing the
2020 value of File_cnt(fp) by n.
2022 d_stdio_stream_array (stdio_streams.U):
2023 This variable tells whether there is an array holding
2026 d_stdiobase (d_stdstdio.U):
2027 This variable conditionally defines USE_STDIO_BASE if this system
2028 has a FILE structure declaring a usable _base field (or equivalent)
2031 d_stdstdio (d_stdstdio.U):
2032 This variable conditionally defines USE_STDIO_PTR if this system
2033 has a FILE structure declaring usable _ptr and _cnt fields (or
2034 equivalent) in stdio.h.
2036 d_strchr (d_strchr.U):
2037 This variable conditionally defines HAS_STRCHR if strchr() and
2038 strrchr() are available for string searching.
2040 d_strcoll (d_strcoll.U):
2041 This variable conditionally defines HAS_STRCOLL if strcoll() is
2042 available to compare strings using collating information.
2044 d_strctcpy (d_strctcpy.U):
2045 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2046 indicates to the C program that this C compiler knows how to copy
2049 d_strerrm (d_strerror.U):
2050 This variable holds what Strerrr is defined as to translate an error
2051 code condition into an error message string. It could be 'strerror'
2052 or a more complex macro emulating strrror with sys_errlist[], or the
2053 "unknown" string when both strerror and sys_errlist are missing.
2055 d_strerror (d_strerror.U):
2056 This variable conditionally defines HAS_STRERROR if strerror() is
2057 available to translate error numbers to strings.
2059 d_strerror_r (d_strerror_r.U):
2060 This variable conditionally defines the HAS_STRERROR_R symbol,
2061 which indicates to the C program that the strerror_r()
2062 routine is available.
2064 d_strftime (d_strftime.U):
2065 This variable conditionally defines the HAS_STRFTIME symbol, which
2066 indicates to the C program that the strftime() routine is available.
2068 d_strlcat (d_strlcat.U):
2069 This variable conditionally defines the HAS_STRLCAT symbol, which
2070 indicates to the C program that the strlcat () routine is available.
2072 d_strlcpy (d_strlcpy.U):
2073 This variable conditionally defines the HAS_STRLCPY symbol, which
2074 indicates to the C program that the strlcpy () routine is available.
2076 d_strtod (d_strtod.U):
2077 This variable conditionally defines the HAS_STRTOD symbol, which
2078 indicates to the C program that the strtod() routine is available
2079 to provide better numeric string conversion than atof().
2081 d_strtol (d_strtol.U):
2082 This variable conditionally defines the HAS_STRTOL symbol, which
2083 indicates to the C program that the strtol() routine is available
2084 to provide better numeric string conversion than atoi() and friends.
2086 d_strtold (d_strtold.U):
2087 This variable conditionally defines the HAS_STRTOLD symbol, which
2088 indicates to the C program that the strtold() routine is available.
2090 d_strtoll (d_strtoll.U):
2091 This variable conditionally defines the HAS_STRTOLL symbol, which
2092 indicates to the C program that the strtoll() routine is available.
2094 d_strtoq (d_strtoq.U):
2095 This variable conditionally defines the HAS_STRTOQ symbol, which
2096 indicates to the C program that the strtoq() routine is available.
2098 d_strtoul (d_strtoul.U):
2099 This variable conditionally defines the HAS_STRTOUL symbol, which
2100 indicates to the C program that the strtoul() routine is available
2101 to provide conversion of strings to unsigned long.
2103 d_strtoull (d_strtoull.U):
2104 This variable conditionally defines the HAS_STRTOULL symbol, which
2105 indicates to the C program that the strtoull() routine is available.
2107 d_strtouq (d_strtouq.U):
2108 This variable conditionally defines the HAS_STRTOUQ symbol, which
2109 indicates to the C program that the strtouq() routine is available.
2111 d_strxfrm (d_strxfrm.U):
2112 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2113 available to transform strings.
2115 d_suidsafe (d_dosuid.U):
2116 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2117 if setuid scripts can be secure. This test looks in /dev/fd/.
2119 d_symlink (d_symlink.U):
2120 This variable conditionally defines the HAS_SYMLINK symbol, which
2121 indicates to the C program that the symlink() routine is available
2122 to create symbolic links.
2124 d_syscall (d_syscall.U):
2125 This variable conditionally defines HAS_SYSCALL if syscall() is
2126 available call arbitrary system calls.
2128 d_syscallproto (d_syscallproto.U):
2129 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2130 which indicates to the C program that the system provides
2131 a prototype for the syscall() function. Otherwise, it is
2132 up to the program to supply one.
2134 d_sysconf (d_sysconf.U):
2135 This variable conditionally defines the HAS_SYSCONF symbol, which
2136 indicates to the C program that the sysconf() routine is available
2137 to determine system related limits and options.
2139 d_sysernlst (d_strerror.U):
2140 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2141 is available to translate error numbers to the symbolic name.
2143 d_syserrlst (d_strerror.U):
2144 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2145 available to translate error numbers to strings.
2147 d_system (d_system.U):
2148 This variable conditionally defines HAS_SYSTEM if system() is
2149 available to issue a shell command.
2151 d_tcgetpgrp (d_tcgtpgrp.U):
2152 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2153 indicates to the C program that the tcgetpgrp() routine is available.
2154 to get foreground process group ID.
2156 d_tcsetpgrp (d_tcstpgrp.U):
2157 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2158 indicates to the C program that the tcsetpgrp() routine is available
2159 to set foreground process group ID.
2161 d_telldir (d_readdir.U):
2162 This variable conditionally defines HAS_TELLDIR if telldir() is
2165 d_telldirproto (d_telldirproto.U):
2166 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2167 which indicates to the C program that the system provides
2168 a prototype for the telldir() function. Otherwise, it is
2169 up to the program to supply one.
2172 This variable conditionally defines the HAS_TIME symbol, which indicates
2173 that the time() routine exists. The time() routine is normaly
2174 provided on UNIX systems.
2176 d_times (d_times.U):
2177 This variable conditionally defines the HAS_TIMES symbol, which indicates
2178 that the times() routine exists. The times() routine is normaly
2179 provided on UNIX systems. You may have to include <sys/times.h>.
2181 d_tm_tm_gmtoff (i_time.U):
2182 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2183 indicates to the C program that the struct tm has the tm_gmtoff field.
2185 d_tm_tm_zone (i_time.U):
2186 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2187 indicates to the C program that the struct tm has the tm_zone field.
2189 d_tmpnam_r (d_tmpnam_r.U):
2190 This variable conditionally defines the HAS_TMPNAM_R symbol,
2191 which indicates to the C program that the tmpnam_r()
2192 routine is available.
2194 d_truncate (d_truncate.U):
2195 This variable conditionally defines HAS_TRUNCATE if truncate() is
2196 available to truncate files.
2198 d_ttyname_r (d_ttyname_r.U):
2199 This variable conditionally defines the HAS_TTYNAME_R symbol,
2200 which indicates to the C program that the ttyname_r()
2201 routine is available.
2203 d_tzname (d_tzname.U):
2204 This variable conditionally defines HAS_TZNAME if tzname[] is
2205 available to access timezone names.
2207 d_u32align (d_u32align.U):
2208 This variable tells whether you must access character data
2209 through U32-aligned pointers.
2211 d_ualarm (d_ualarm.U):
2212 This variable conditionally defines the HAS_UALARM symbol, which
2213 indicates to the C program that the ualarm() routine is available.
2215 d_umask (d_umask.U):
2216 This variable conditionally defines the HAS_UMASK symbol, which
2217 indicates to the C program that the umask() routine is available.
2218 to set and get the value of the file creation mask.
2220 d_uname (d_gethname.U):
2221 This variable conditionally defines the HAS_UNAME symbol, which
2222 indicates to the C program that the uname() routine may be
2223 used to derive the host name.
2225 d_union_semun (d_union_semun.U):
2226 This variable conditionally defines HAS_UNION_SEMUN if the
2227 union semun is defined by including <sys/sem.h>.
2229 d_unordered (d_unordered.U):
2230 This variable conditionally defines the HAS_UNORDERED symbol, which
2231 indicates to the C program that the unordered() routine is available.
2233 d_unsetenv (d_unsetenv.U):
2234 This variable conditionally defines the HAS_UNSETENV symbol, which
2235 indicates to the C program that the unsetenv () routine is available.
2237 d_usleep (d_usleep.U):
2238 This variable conditionally defines HAS_USLEEP if usleep() is
2239 available to do high granularity sleeps.
2241 d_usleepproto (d_usleepproto.U):
2242 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2243 which indicates to the C program that the system provides
2244 a prototype for the usleep() function. Otherwise, it is
2245 up to the program to supply one.
2247 d_ustat (d_ustat.U):
2248 This variable conditionally defines HAS_USTAT if ustat() is
2249 available to query file system statistics by dev_t.
2251 d_vendorarch (vendorarch.U):
2252 This variable conditionally defined PERL_VENDORARCH.
2254 d_vendorbin (vendorbin.U):
2255 This variable conditionally defines PERL_VENDORBIN.
2257 d_vendorlib (vendorlib.U):
2258 This variable conditionally defines PERL_VENDORLIB.
2260 d_vendorscript (vendorscript.U):
2261 This variable conditionally defines PERL_VENDORSCRIPT.
2263 d_vfork (d_vfork.U):
2264 This variable conditionally defines the HAS_VFORK symbol, which
2265 indicates the vfork() routine is available.
2267 d_void_closedir (d_closedir.U):
2268 This variable conditionally defines VOID_CLOSEDIR if closedir()
2269 does not return a value.
2271 d_voidsig (d_voidsig.U):
2272 This variable conditionally defines VOIDSIG if this system
2273 declares "void (*signal(...))()" in signal.h. The old way was to
2274 declare it as "int (*signal(...))()".
2276 d_voidtty (i_sysioctl.U):
2277 This variable conditionally defines USE_IOCNOTTY to indicate that the
2278 ioctl() call with TIOCNOTTY should be used to void tty association.
2279 Otherwise (on USG probably), it is enough to close the standard file
2280 decriptors and do a setpgrp().
2282 d_volatile (d_volatile.U):
2283 This variable conditionally defines the HASVOLATILE symbol, which
2284 indicates to the C program that this C compiler knows about the
2285 volatile declaration.
2287 d_vprintf (d_vprintf.U):
2288 This variable conditionally defines the HAS_VPRINTF symbol, which
2289 indicates to the C program that the vprintf() routine is available
2290 to printf with a pointer to an argument list.
2292 d_vsnprintf (d_snprintf.U):
2293 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2294 indicates to the C program that the vsnprintf () library function
2297 d_wait4 (d_wait4.U):
2298 This variable conditionally defines the HAS_WAIT4 symbol, which
2299 indicates the wait4() routine is available.
2301 d_waitpid (d_waitpid.U):
2302 This variable conditionally defines HAS_WAITPID if waitpid() is
2303 available to wait for child process.
2305 d_wcstombs (d_wcstombs.U):
2306 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2307 indicates to the C program that the wcstombs() routine is available
2308 to convert wide character strings to multibyte strings.
2310 d_wctomb (d_wctomb.U):
2311 This variable conditionally defines the HAS_WCTOMB symbol, which
2312 indicates to the C program that the wctomb() routine is available
2313 to convert a wide character to a multibyte.
2315 d_writev (d_writev.U):
2316 This variable conditionally defines the HAS_WRITEV symbol, which
2317 indicates to the C program that the writev() routine is available.
2320 This variable conditionally defines the symbol XENIX, which alerts
2321 the C program that it runs under Xenix.
2324 This variable is used internally by Configure to determine the
2325 full pathname (if any) of the date program. After Configure runs,
2326 the value is reset to a plain "date" and is not useful.
2328 db_hashtype (i_db.U):
2329 This variable contains the type of the hash structure element
2330 in the <db.h> header file. In older versions of DB, it was
2331 int, while in newer ones it is u_int32_t.
2333 db_prefixtype (i_db.U):
2334 This variable contains the type of the prefix structure element
2335 in the <db.h> header file. In older versions of DB, it was
2336 int, while in newer ones it is size_t.
2338 db_version_major (i_db.U):
2339 This variable contains the major version number of
2340 Berkeley DB found in the <db.h> header file.
2342 db_version_minor (i_db.U):
2343 This variable contains the minor version number of
2344 Berkeley DB found in the <db.h> header file.
2345 For DB version 1 this is always 0.
2347 db_version_patch (i_db.U):
2348 This variable contains the patch version number of
2349 Berkeley DB found in the <db.h> header file.
2350 For DB version 1 this is always 0.
2352 defvoidused (voidflags.U):
2353 This variable contains the default value of the VOIDUSED symbol (15).
2355 direntrytype (i_dirent.U):
2356 This symbol is set to 'struct direct' or 'struct dirent' depending on
2357 whether dirent is available or not. You should use this pseudo type to
2358 portably declare your directory entries.
2361 This variable contains the extension that is to be used for the
2362 dynamically loaded modules that perl generaties.
2365 This variable contains the name of the dynamic loading file that
2366 will be used with the package.
2368 doublesize (doublesize.U):
2369 This variable contains the value of the DOUBLESIZE symbol, which
2370 indicates to the C program how many bytes there are in a double.
2372 drand01 (randfunc.U):
2373 Indicates the macro to be used to generate normalized
2374 random numbers. Uses randfunc, often divided by
2375 (double) (((unsigned long) 1 << randbits)) in order to
2376 normalize the result.
2377 In C programs, the macro 'Drand01' is mapped to drand01.
2379 drand48_r_proto (d_drand48_r.U):
2380 This variable encodes the prototype of drand48_r.
2381 It is zero if d_drand48_r is undef, and one of the
2382 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2385 dynamic_ext (Extensions.U):
2386 This variable holds a list of XS extension files we want to
2387 link dynamically into the package. It is used by Makefile.
2389 eagain (nblock_io.U):
2390 This variable bears the symbolic errno code set by read() when no
2391 data is present on the file and non-blocking I/O was enabled (otherwise,
2392 read() blocks naturally).
2395 This variable conditionally defines EBCDIC if this
2396 system uses EBCDIC encoding. Among other things, this
2397 means that the character ranges are not contiguous.
2401 This variable is used internally by Configure to determine the
2402 full pathname (if any) of the echo program. After Configure runs,
2403 the value is reset to a plain "echo" and is not useful.
2406 This variable is used internally by Configure to determine the
2407 full pathname (if any) of the egrep program. After Configure runs,
2408 the value is reset to a plain "egrep" and is not useful.
2411 This variable is defined but not used by Configure.
2412 The value is a plain '' and is not useful.
2414 endgrent_r_proto (d_endgrent_r.U):
2415 This variable encodes the prototype of endgrent_r.
2416 It is zero if d_endgrent_r is undef, and one of the
2417 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2420 endhostent_r_proto (d_endhostent_r.U):
2421 This variable encodes the prototype of endhostent_r.
2422 It is zero if d_endhostent_r is undef, and one of the
2423 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2426 endnetent_r_proto (d_endnetent_r.U):
2427 This variable encodes the prototype of endnetent_r.
2428 It is zero if d_endnetent_r is undef, and one of the
2429 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2432 endprotoent_r_proto (d_endprotoent_r.U):
2433 This variable encodes the prototype of endprotoent_r.
2434 It is zero if d_endprotoent_r is undef, and one of the
2435 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2438 endpwent_r_proto (d_endpwent_r.U):
2439 This variable encodes the prototype of endpwent_r.
2440 It is zero if d_endpwent_r is undef, and one of the
2441 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2444 endservent_r_proto (d_endservent_r.U):
2445 This variable encodes the prototype of endservent_r.
2446 It is zero if d_endservent_r is undef, and one of the
2447 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2451 When running under Eunice this variable contains a command which will
2452 convert a shell script to the proper form of text file for it to be
2453 executable by the shell. On other systems it is a no-op.
2456 This is an old synonym for _exe.
2459 This variable is used internally by Configure to determine the
2460 full pathname (if any) of the expr program. After Configure runs,
2461 the value is reset to a plain "expr" and is not useful.
2463 extensions (Extensions.U):
2464 This variable holds a list of all extension files (both XS and
2465 non-xs linked into the package. It is propagated to Config.pm
2466 and is typically used to test whether a particular extesion
2470 This variable holds a list of extra modules to install.
2472 fflushall (fflushall.U):
2473 This symbol, if defined, tells that to flush
2474 all pending stdio output one must loop through all
2475 the stdio file handles stored in an array and fflush them.
2476 Note that if fflushNULL is defined, fflushall will not
2477 even be probed for and will be left undefined.
2479 fflushNULL (fflushall.U):
2480 This symbol, if defined, tells that fflush(NULL) does flush
2481 all pending stdio output.
2484 This variable is defined but not used by Configure.
2485 The value is a plain '' and is not useful.
2487 firstmakefile (Unix.U):
2488 This variable defines the first file searched by make. On unix,
2489 it is makefile (then Makefile). On case-insensitive systems,
2490 it might be something else. This is only used to deal with
2491 convoluted make depend tricks.
2494 This variable is defined but not used by Configure.
2495 The value is a plain '' and is not useful.
2497 fpossize (fpossize.U):
2498 This variable contains the size of a fpostype in bytes.
2500 fpostype (fpostype.U):
2501 This variable defines Fpos_t to be something like fpos_t, long,
2502 uint, or whatever type is used to declare file positions in libc.
2504 freetype (mallocsrc.U):
2505 This variable contains the return type of free(). It is usually
2506 void, but occasionally int.
2509 This variable contains the command used by Configure
2510 to copy files from the target host. Useful and available
2511 only during Perl build.
2512 The string ':' if not cross-compiling.
2515 This variable contains the full pathname to 'ar', whether or
2516 not the user has specified 'portability'. This is only used
2520 This variable contains the full pathname to 'csh', whether or
2521 not the user has specified 'portability'. This is only used
2522 in the compiled C program, and we assume that all systems which
2523 can share this executable will have the same full pathname to
2526 full_sed (Loc_sed.U):
2527 This variable contains the full pathname to 'sed', whether or
2528 not the user has specified 'portability'. This is only used
2529 in the compiled C program, and we assume that all systems which
2530 can share this executable will have the same full pathname to
2533 gccansipedantic (gccvers.U):
2534 If GNU cc (gcc) is used, this variable will enable (if set) the
2535 -ansi and -pedantic ccflags for building core files (through
2536 cflags script). (See Porting/pumpkin.pod for full description).
2538 gccosandvers (gccvers.U):
2539 If GNU cc (gcc) is used, this variable holds the operating system
2540 and version used to compile gcc. It is set to '' if not gcc,
2541 or if nothing useful can be parsed as the os version.
2543 gccversion (gccvers.U):
2544 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2545 indicate whether the compiler is version 1 or 2. This is used in
2546 setting some of the default cflags. It is set to '' if not gcc.
2548 getgrent_r_proto (d_getgrent_r.U):
2549 This variable encodes the prototype of getgrent_r.
2550 It is zero if d_getgrent_r is undef, and one of the
2551 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2554 getgrgid_r_proto (d_getgrgid_r.U):
2555 This variable encodes the prototype of getgrgid_r.
2556 It is zero if d_getgrgid_r is undef, and one of the
2557 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2560 getgrnam_r_proto (d_getgrnam_r.U):
2561 This variable encodes the prototype of getgrnam_r.
2562 It is zero if d_getgrnam_r is undef, and one of the
2563 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2566 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2567 This variable encodes the prototype of gethostbyaddr_r.
2568 It is zero if d_gethostbyaddr_r is undef, and one of the
2569 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2572 gethostbyname_r_proto (d_gethostbyname_r.U):
2573 This variable encodes the prototype of gethostbyname_r.
2574 It is zero if d_gethostbyname_r is undef, and one of the
2575 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2578 gethostent_r_proto (d_gethostent_r.U):
2579 This variable encodes the prototype of gethostent_r.
2580 It is zero if d_gethostent_r is undef, and one of the
2581 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2584 getlogin_r_proto (d_getlogin_r.U):
2585 This variable encodes the prototype of getlogin_r.
2586 It is zero if d_getlogin_r is undef, and one of the
2587 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2590 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2591 This variable encodes the prototype of getnetbyaddr_r.
2592 It is zero if d_getnetbyaddr_r is undef, and one of the
2593 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2596 getnetbyname_r_proto (d_getnetbyname_r.U):
2597 This variable encodes the prototype of getnetbyname_r.
2598 It is zero if d_getnetbyname_r is undef, and one of the
2599 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2602 getnetent_r_proto (d_getnetent_r.U):
2603 This variable encodes the prototype of getnetent_r.
2604 It is zero if d_getnetent_r is undef, and one of the
2605 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2608 getprotobyname_r_proto (d_getprotobyname_r.U):
2609 This variable encodes the prototype of getprotobyname_r.
2610 It is zero if d_getprotobyname_r is undef, and one of the
2611 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2614 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2615 This variable encodes the prototype of getprotobynumber_r.
2616 It is zero if d_getprotobynumber_r is undef, and one of the
2617 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2620 getprotoent_r_proto (d_getprotoent_r.U):
2621 This variable encodes the prototype of getprotoent_r.
2622 It is zero if d_getprotoent_r is undef, and one of the
2623 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2626 getpwent_r_proto (d_getpwent_r.U):
2627 This variable encodes the prototype of getpwent_r.
2628 It is zero if d_getpwent_r is undef, and one of the
2629 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2632 getpwnam_r_proto (d_getpwnam_r.U):
2633 This variable encodes the prototype of getpwnam_r.
2634 It is zero if d_getpwnam_r is undef, and one of the
2635 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2638 getpwuid_r_proto (d_getpwuid_r.U):
2639 This variable encodes the prototype of getpwuid_r.
2640 It is zero if d_getpwuid_r is undef, and one of the
2641 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2644 getservbyname_r_proto (d_getservbyname_r.U):
2645 This variable encodes the prototype of getservbyname_r.
2646 It is zero if d_getservbyname_r is undef, and one of the
2647 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2650 getservbyport_r_proto (d_getservbyport_r.U):
2651 This variable encodes the prototype of getservbyport_r.
2652 It is zero if d_getservbyport_r is undef, and one of the
2653 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2656 getservent_r_proto (d_getservent_r.U):
2657 This variable encodes the prototype of getservent_r.
2658 It is zero if d_getservent_r is undef, and one of the
2659 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2662 getspnam_r_proto (d_getspnam_r.U):
2663 This variable encodes the prototype of getspnam_r.
2664 It is zero if d_getspnam_r is undef, and one of the
2665 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2669 This variable contains the format string used for printing a Gid_t.
2671 gidsign (gidsign.U):
2672 This variable contains the signedness of a gidtype.
2673 1 for unsigned, -1 for signed.
2675 gidsize (gidsize.U):
2676 This variable contains the size of a gidtype in bytes.
2678 gidtype (gidtype.U):
2679 This variable defines Gid_t to be something like gid_t, int,
2680 ushort, or whatever type is used to declare the return type
2681 of getgid(). Typically, it is the type of group ids in the kernel.
2684 This variable holds the general path (space-separated) used to
2685 find libraries. It may contain directories that do not exist on
2686 this platform, libpth is the cleaned-up version.
2689 This variable is used internally by Configure to determine the
2690 full pathname (if any) of the gmake program. After Configure runs,
2691 the value is reset to a plain "gmake" and is not useful.
2693 gmtime_r_proto (d_gmtime_r.U):
2694 This variable encodes the prototype of gmtime_r.
2695 It is zero if d_gmtime_r is undef, and one of the
2696 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2699 gnulibc_version (d_gnulibc.U):
2700 This variable contains the version number of the GNU C library.
2701 It is usually something like '2.2.5'. It is a plain '' if this
2702 is not the GNU C library, or if the version is unknown.
2705 This variable is used internally by Configure to determine the
2706 full pathname (if any) of the grep program. After Configure runs,
2707 the value is reset to a plain "grep" and is not useful.
2710 This variable contains a command that produces the text of the
2711 /etc/group file. This is normally "cat /etc/group", but can be
2712 "ypcat group" when NIS is used.
2713 On some systems, such as os390, there may be no equivalent
2714 command, in which case this variable is unset.
2716 groupstype (groupstype.U):
2717 This variable defines Groups_t to be something like gid_t, int,
2718 ushort, or whatever type is used for the second argument to
2719 getgroups() and setgroups(). Usually, this is the same as
2720 gidtype (gid_t), but sometimes it isn't.
2723 This variable is used internally by Configure to determine the
2724 full pathname (if any) of the gzip program. After Configure runs,
2725 the value is reset to a plain "gzip" and is not useful.
2727 h_fcntl (h_fcntl.U):
2728 This is variable gets set in various places to tell i_fcntl that
2729 <fcntl.h> should be included.
2731 h_sysfile (h_sysfile.U):
2732 This is variable gets set in various places to tell i_sys_file that
2733 <sys/file.h> should be included.
2736 Gives the type of hints used for previous answers. May be one of
2737 "default", "recommended" or "previous".
2740 This variable contains a command that produces the text of the
2741 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2742 "ypcat hosts" when NIS is used.
2743 On some systems, such as os390, there may be no equivalent
2744 command, in which case this variable is unset.
2746 html1dir (html1dir.U):
2747 This variable contains the name of the directory in which html
2748 source pages are to be put. This directory is for pages
2749 that describe whole programs, not libraries or modules. It
2750 is intended to correspond roughly to section 1 of the Unix
2753 html1direxp (html1dir.U):
2754 This variable is the same as the html1dir variable, but is filename
2755 expanded at configuration time, for convenient use in makefiles.
2757 html3dir (html3dir.U):
2758 This variable contains the name of the directory in which html
2759 source pages are to be put. This directory is for pages
2760 that describe libraries or modules. It is intended to
2761 correspond roughly to section 3 of the Unix manuals.
2763 html3direxp (html3dir.U):
2764 This variable is the same as the html3dir variable, but is filename
2765 expanded at configuration time, for convenient use in makefiles.
2768 This variable is the size of an I16 in bytes.
2771 This variable contains the C type used for Perl's I16.
2774 This variable is the size of an I32 in bytes.
2777 This variable contains the C type used for Perl's I32.
2780 This variable is the size of an I64 in bytes.
2783 This variable contains the C type used for Perl's I64.
2786 This variable is the size of an I8 in bytes.
2789 This variable contains the C type used for Perl's I8.
2791 i_arpainet (i_arpainet.U):
2792 This variable conditionally defines the I_ARPA_INET symbol,
2793 and indicates whether a C program should include <arpa/inet.h>.
2795 i_bsdioctl (i_sysioctl.U):
2796 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2797 indicates to the C program that <sys/bsdioctl.h> exists and should
2800 i_crypt (i_crypt.U):
2801 This variable conditionally defines the I_CRYPT symbol, and indicates
2802 whether a C program should include <crypt.h>.
2805 This variable conditionally defines the I_DB symbol, and indicates
2806 whether a C program may include Berkeley's DB include file <db.h>.
2809 This variable conditionally defines the I_DBM symbol, which
2810 indicates to the C program that <dbm.h> exists and should
2813 i_dirent (i_dirent.U):
2814 This variable conditionally defines I_DIRENT, which indicates
2815 to the C program that it should include <dirent.h>.
2818 This variable conditionally defines the I_DLD symbol, which
2819 indicates to the C program that <dld.h> (GNU dynamic loading)
2820 exists and should be included.
2822 i_dlfcn (i_dlfcn.U):
2823 This variable conditionally defines the I_DLFCN symbol, which
2824 indicates to the C program that <dlfcn.h> exists and should
2827 i_fcntl (i_fcntl.U):
2828 This variable controls the value of I_FCNTL (which tells
2829 the C program to include <fcntl.h>).
2831 i_float (i_float.U):
2832 This variable conditionally defines the I_FLOAT symbol, and indicates
2833 whether a C program may include <float.h> to get symbols like DBL_MAX
2834 or DBL_MIN, i.e. machine dependent floating point values.
2837 This variable conditionally defines the I_FP symbol, and indicates
2838 whether a C program should include <fp.h>.
2840 i_fp_class (i_fp_class.U):
2841 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2842 whether a C program should include <fp_class.h>.
2845 This variable conditionally defines the I_GDBM symbol, which
2846 indicates to the C program that <gdbm.h> exists and should
2850 This variable conditionally defines the I_GRP symbol, and indicates
2851 whether a C program should include <grp.h>.
2853 i_ieeefp (i_ieeefp.U):
2854 This variable conditionally defines the I_IEEEFP symbol, and indicates
2855 whether a C program should include <ieeefp.h>.
2857 i_inttypes (i_inttypes.U):
2858 This variable conditionally defines the I_INTTYPES symbol,
2859 and indicates whether a C program should include <inttypes.h>.
2861 i_langinfo (i_langinfo.U):
2862 This variable conditionally defines the I_LANGINFO symbol,
2863 and indicates whether a C program should include <langinfo.h>.
2865 i_libutil (i_libutil.U):
2866 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2867 whether a C program should include <libutil.h>.
2869 i_limits (i_limits.U):
2870 This variable conditionally defines the I_LIMITS symbol, and indicates
2871 whether a C program may include <limits.h> to get symbols like WORD_BIT
2874 i_locale (i_locale.U):
2875 This variable conditionally defines the I_LOCALE symbol,
2876 and indicates whether a C program should include <locale.h>.
2878 i_machcthr (i_machcthr.U):
2879 This variable conditionally defines the I_MACH_CTHREADS symbol,
2880 and indicates whether a C program should include <mach/cthreads.h>.
2882 i_malloc (i_malloc.U):
2883 This variable conditionally defines the I_MALLOC symbol, and indicates
2884 whether a C program should include <malloc.h>.
2887 This variable conditionally defines the I_MATH symbol, and indicates
2888 whether a C program may include <math.h>.
2890 i_memory (i_memory.U):
2891 This variable conditionally defines the I_MEMORY symbol, and indicates
2892 whether a C program should include <memory.h>.
2894 i_mntent (i_mntent.U):
2895 This variable conditionally defines the I_MNTENT symbol, and indicates
2896 whether a C program should include <mntent.h>.
2899 This variable conditionally defines the I_NDBM symbol, which
2900 indicates to the C program that <ndbm.h> exists and should
2903 i_netdb (i_netdb.U):
2904 This variable conditionally defines the I_NETDB symbol, and indicates
2905 whether a C program should include <netdb.h>.
2907 i_neterrno (i_neterrno.U):
2908 This variable conditionally defines the I_NET_ERRNO symbol, which
2909 indicates to the C program that <net/errno.h> exists and should
2912 i_netinettcp (i_netinettcp.U):
2913 This variable conditionally defines the I_NETINET_TCP symbol,
2914 and indicates whether a C program should include <netinet/tcp.h>.
2917 This variable conditionally defines I_NETINET_IN, which indicates
2918 to the C program that it should include <netinet/in.h>. Otherwise,
2919 you may try <sys/in.h>.
2922 This variable conditionally defines the I_POLL symbol, and indicates
2923 whether a C program should include <poll.h>.
2926 This variable conditionally defines the I_PROT symbol, and indicates
2927 whether a C program should include <prot.h>.
2929 i_pthread (i_pthread.U):
2930 This variable conditionally defines the I_PTHREAD symbol,
2931 and indicates whether a C program should include <pthread.h>.
2934 This variable conditionally defines I_PWD, which indicates
2935 to the C program that it should include <pwd.h>.
2937 i_rpcsvcdbm (i_dbm.U):
2938 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2939 indicates to the C program that <rpcsvc/dbm.h> exists and should
2940 be included. Some System V systems might need this instead of <dbm.h>.
2943 This variable conditionally defines the I_SFIO symbol,
2944 and indicates whether a C program should include <sfio.h>.
2946 i_sgtty (i_termio.U):
2947 This variable conditionally defines the I_SGTTY symbol, which
2948 indicates to the C program that it should include <sgtty.h> rather
2951 i_shadow (i_shadow.U):
2952 This variable conditionally defines the I_SHADOW symbol, and indicates
2953 whether a C program should include <shadow.h>.
2955 i_socks (i_socks.U):
2956 This variable conditionally defines the I_SOCKS symbol, and indicates
2957 whether a C program should include <socks.h>.
2959 i_stdarg (i_varhdr.U):
2960 This variable conditionally defines the I_STDARG symbol, which
2961 indicates to the C program that <stdarg.h> exists and should
2964 i_stddef (i_stddef.U):
2965 This variable conditionally defines the I_STDDEF symbol, which
2966 indicates to the C program that <stddef.h> exists and should
2969 i_stdlib (i_stdlib.U):
2970 This variable conditionally defines the I_STDLIB symbol, which
2971 indicates to the C program that <stdlib.h> exists and should
2974 i_string (i_string.U):
2975 This variable conditionally defines the I_STRING symbol, which
2976 indicates that <string.h> should be included rather than <strings.h>.
2978 i_sunmath (i_sunmath.U):
2979 This variable conditionally defines the I_SUNMATH symbol, and indicates
2980 whether a C program should include <sunmath.h>.
2982 i_sysaccess (i_sysaccess.U):
2983 This variable conditionally defines the I_SYS_ACCESS symbol,
2984 and indicates whether a C program should include <sys/access.h>.
2986 i_sysdir (i_sysdir.U):
2987 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2988 whether a C program should include <sys/dir.h>.
2990 i_sysfile (i_sysfile.U):
2991 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2992 whether a C program should include <sys/file.h> to get R_OK and friends.
2994 i_sysfilio (i_sysioctl.U):
2995 This variable conditionally defines the I_SYS_FILIO symbol, which
2996 indicates to the C program that <sys/filio.h> exists and should
2997 be included in preference to <sys/ioctl.h>.
3000 This variable conditionally defines I_SYS_IN, which indicates
3001 to the C program that it should include <sys/in.h> instead of
3004 i_sysioctl (i_sysioctl.U):
3005 This variable conditionally defines the I_SYS_IOCTL symbol, which
3006 indicates to the C program that <sys/ioctl.h> exists and should
3009 i_syslog (i_syslog.U):
3010 This variable conditionally defines the I_SYSLOG symbol,
3011 and indicates whether a C program should include <syslog.h>.
3013 i_sysmman (i_sysmman.U):
3014 This variable conditionally defines the I_SYS_MMAN symbol, and
3015 indicates whether a C program should include <sys/mman.h>.
3017 i_sysmode (i_sysmode.U):
3018 This variable conditionally defines the I_SYSMODE symbol,
3019 and indicates whether a C program should include <sys/mode.h>.
3021 i_sysmount (i_sysmount.U):
3022 This variable conditionally defines the I_SYSMOUNT symbol,
3023 and indicates whether a C program should include <sys/mount.h>.
3025 i_sysndir (i_sysndir.U):
3026 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3027 whether a C program should include <sys/ndir.h>.
3029 i_sysparam (i_sysparam.U):
3030 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3031 whether a C program should include <sys/param.h>.
3033 i_sysresrc (i_sysresrc.U):
3034 This variable conditionally defines the I_SYS_RESOURCE symbol,
3035 and indicates whether a C program should include <sys/resource.h>.
3037 i_syssecrt (i_syssecrt.U):
3038 This variable conditionally defines the I_SYS_SECURITY symbol,
3039 and indicates whether a C program should include <sys/security.h>.
3041 i_sysselct (i_sysselct.U):
3042 This variable conditionally defines I_SYS_SELECT, which indicates
3043 to the C program that it should include <sys/select.h> in order to
3044 get the definition of struct timeval.
3046 i_syssockio (i_sysioctl.U):
3047 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3048 C program that socket ioctl codes may be found in <sys/sockio.h>
3049 instead of <sys/ioctl.h>.
3051 i_sysstat (i_sysstat.U):
3052 This variable conditionally defines the I_SYS_STAT symbol,
3053 and indicates whether a C program should include <sys/stat.h>.
3055 i_sysstatfs (i_sysstatfs.U):
3056 This variable conditionally defines the I_SYSSTATFS symbol,
3057 and indicates whether a C program should include <sys/statfs.h>.
3059 i_sysstatvfs (i_sysstatvfs.U):
3060 This variable conditionally defines the I_SYSSTATVFS symbol,
3061 and indicates whether a C program should include <sys/statvfs.h>.
3063 i_systime (i_time.U):
3064 This variable conditionally defines I_SYS_TIME, which indicates
3065 to the C program that it should include <sys/time.h>.
3067 i_systimek (i_time.U):
3068 This variable conditionally defines I_SYS_TIME_KERNEL, which
3069 indicates to the C program that it should include <sys/time.h>
3070 with KERNEL defined.
3072 i_systimes (i_systimes.U):
3073 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3074 whether a C program should include <sys/times.h>.
3076 i_systypes (i_systypes.U):
3077 This variable conditionally defines the I_SYS_TYPES symbol,
3078 and indicates whether a C program should include <sys/types.h>.
3080 i_sysuio (i_sysuio.U):
3081 This variable conditionally defines the I_SYSUIO symbol, and indicates
3082 whether a C program should include <sys/uio.h>.
3084 i_sysun (i_sysun.U):
3085 This variable conditionally defines I_SYS_UN, which indicates
3086 to the C program that it should include <sys/un.h> to get UNIX
3087 domain socket definitions.
3089 i_sysutsname (i_sysutsname.U):
3090 This variable conditionally defines the I_SYSUTSNAME symbol,
3091 and indicates whether a C program should include <sys/utsname.h>.
3093 i_sysvfs (i_sysvfs.U):
3094 This variable conditionally defines the I_SYSVFS symbol,
3095 and indicates whether a C program should include <sys/vfs.h>.
3097 i_syswait (i_syswait.U):
3098 This variable conditionally defines I_SYS_WAIT, which indicates
3099 to the C program that it should include <sys/wait.h>.
3101 i_termio (i_termio.U):
3102 This variable conditionally defines the I_TERMIO symbol, which
3103 indicates to the C program that it should include <termio.h> rather
3106 i_termios (i_termio.U):
3107 This variable conditionally defines the I_TERMIOS symbol, which
3108 indicates to the C program that the POSIX <termios.h> file is
3112 This variable conditionally defines I_TIME, which indicates
3113 to the C program that it should include <time.h>.
3115 i_unistd (i_unistd.U):
3116 This variable conditionally defines the I_UNISTD symbol, and indicates
3117 whether a C program should include <unistd.h>.
3119 i_ustat (i_ustat.U):
3120 This variable conditionally defines the I_USTAT symbol, and indicates
3121 whether a C program should include <ustat.h>.
3123 i_utime (i_utime.U):
3124 This variable conditionally defines the I_UTIME symbol, and indicates
3125 whether a C program should include <utime.h>.
3127 i_values (i_values.U):
3128 This variable conditionally defines the I_VALUES symbol, and indicates
3129 whether a C program may include <values.h> to get symbols like MAXLONG
3132 i_varargs (i_varhdr.U):
3133 This variable conditionally defines I_VARARGS, which indicates
3134 to the C program that it should include <varargs.h>.
3136 i_varhdr (i_varhdr.U):
3137 Contains the name of the header to be included to get va_dcl definition.
3138 Typically one of varargs.h or stdarg.h.
3140 i_vfork (i_vfork.U):
3141 This variable conditionally defines the I_VFORK symbol, and indicates
3142 whether a C program should include vfork.h.
3144 ignore_versioned_solibs (libs.U):
3145 This variable should be non-empty if non-versioned shared
3146 libraries (libfoo.so.x.y) are to be ignored (because they
3147 cannot be linked against).
3149 inc_version_list (inc_version_list.U):
3150 This variable specifies the list of subdirectories in over
3151 which perl.c:incpush() and lib/lib.pm will automatically
3152 search when adding directories to @INC. The elements in
3153 the list are separated by spaces. This is only useful
3154 if you have a perl library directory tree structured like the
3155 default one. See INSTALL for how this works. The versioned
3156 site_perl directory was introduced in 5.005, so that is the
3157 lowest possible value.
3159 This list includes architecture-dependent directories back to
3160 version $api_versionstring (e.g. 5.5.640) and
3161 architecture-independent directories all the way back to
3164 inc_version_list_init (inc_version_list.U):
3165 This variable holds the same list as inc_version_list, but
3166 each item is enclosed in double quotes and separated by commas,
3167 suitable for use in the PERL_INC_VERSION_LIST initialization.
3170 This variable must preceed the normal include path to get hte
3171 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3172 Value can be "" or "/bsd43" on mips.
3175 This variable is defined but not used by Configure.
3176 The value is a plain '' and is not useful.
3178 initialinstalllocation (bin.U):
3179 When userelocatableinc is true, this variable holds the location
3180 that make install should copy the perl binary to, with all the
3181 run-time relocatable paths calculated from this at install time.
3182 When used, it is initialised to the original value of binexp, and
3183 then binexp is set to '.../', as the other binaries are found
3184 relative to the perl binary.
3186 installarchlib (archlib.U):
3187 This variable is really the same as archlibexp but may differ on
3188 those systems using AFS. For extra portability, only this variable
3189 should be used in makefiles.
3192 This variable is the same as binexp unless AFS is running in which case
3193 the user is explicitely prompted for it. This variable should always
3194 be used in your makefiles for maximum portability.
3196 installhtml1dir (html1dir.U):
3197 This variable is really the same as html1direxp, unless you are
3198 using a different installprefix. For extra portability, you
3199 should only use this variable within your makefiles.
3201 installhtml3dir (html3dir.U):
3202 This variable is really the same as html3direxp, unless you are
3203 using a different installprefix. For extra portability, you
3204 should only use this variable within your makefiles.
3206 installman1dir (man1dir.U):
3207 This variable is really the same as man1direxp, unless you are using
3208 AFS in which case it points to the read/write location whereas
3209 man1direxp only points to the read-only access location. For extra
3210 portability, you should only use this variable within your makefiles.
3212 installman3dir (man3dir.U):
3213 This variable is really the same as man3direxp, unless you are using
3214 AFS in which case it points to the read/write location whereas
3215 man3direxp only points to the read-only access location. For extra
3216 portability, you should only use this variable within your makefiles.
3218 installprefix (installprefix.U):
3219 This variable holds the name of the directory below which
3220 "make install" will install the package. For most users, this
3221 is the same as prefix. However, it is useful for
3222 installing the software into a different (usually temporary)
3223 location after which it can be bundled up and moved somehow
3224 to the final location specified by prefix.
3226 installprefixexp (installprefix.U):
3227 This variable holds the full absolute path of installprefix
3228 with all ~-expansion done.
3230 installprivlib (privlib.U):
3231 This variable is really the same as privlibexp but may differ on
3232 those systems using AFS. For extra portability, only this variable
3233 should be used in makefiles.
3235 installscript (scriptdir.U):
3236 This variable is usually the same as scriptdirexp, unless you are on
3237 a system running AFS, in which case they may differ slightly. You
3238 should always use this variable within your makefiles for portability.
3240 installsitearch (sitearch.U):
3241 This variable is really the same as sitearchexp but may differ on
3242 those systems using AFS. For extra portability, only this variable
3243 should be used in makefiles.
3245 installsitebin (sitebin.U):
3246 This variable is usually the same as sitebinexp, 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 installsitehtml1dir (sitehtml1dir.U):
3251 This variable is really the same as sitehtml1direxp, unless you are using
3252 AFS in which case it points to the read/write location whereas
3253 html1direxp only points to the read-only access location. For extra
3254 portability, you should only use this variable within your makefiles.
3256 installsitehtml3dir (sitehtml3dir.U):
3257 This variable is really the same as sitehtml3direxp, unless you are using
3258 AFS in which case it points to the read/write location whereas
3259 html3direxp only points to the read-only access location. For extra
3260 portability, you should only use this variable within your makefiles.
3262 installsitelib (sitelib.U):
3263 This variable is really the same as sitelibexp but may differ on
3264 those systems using AFS. For extra portability, only this variable
3265 should be used in makefiles.
3267 installsiteman1dir (siteman1dir.U):
3268 This variable is really the same as siteman1direxp, unless you are using
3269 AFS in which case it points to the read/write location whereas
3270 man1direxp only points to the read-only access location. For extra
3271 portability, you should only use this variable within your makefiles.
3273 installsiteman3dir (siteman3dir.U):
3274 This variable is really the same as siteman3direxp, unless you are using
3275 AFS in which case it points to the read/write location whereas
3276 man3direxp only points to the read-only access location. For extra
3277 portability, you should only use this variable within your makefiles.
3279 installsitescript (sitescript.U):
3280 This variable is usually the same as sitescriptexp, unless you are on
3281 a system running AFS, in which case they may differ slightly. You
3282 should always use this variable within your makefiles for portability.
3284 installstyle (installstyle.U):
3285 This variable describes the "style" of the perl installation.
3286 This is intended to be useful for tools that need to
3287 manipulate entire perl distributions. Perl itself doesn't use
3288 this to find its libraries -- the library directories are
3289 stored directly in Config.pm. Currently, there are only two
3290 styles: "lib" and "lib/perl5". The default library locations
3291 (e.g. privlib, sitelib) are either $prefix/lib or
3292 $prefix/lib/perl5. The former is useful if $prefix is a
3293 directory dedicated to perl (e.g. /opt/perl), while the latter
3294 is useful if $prefix is shared by many packages, e.g. if
3297 Unfortunately, while this "style" variable is used to set
3298 defaults for all three directory hierarchies (core, vendor, and
3299 site), there is no guarantee that the same style is actually
3300 appropriate for all those directories. For example, $prefix
3301 might be /opt/perl, but $siteprefix might be /usr/local.
3302 (Perhaps, in retrospect, the "lib" style should never have been
3303 supported, but it did seem like a nice idea at the time.)
3305 The situation is even less clear for tools such as MakeMaker
3306 that can be used to install additional modules into
3307 non-standard places. For example, if a user intends to install
3308 a module into a private directory (perhaps by setting PREFIX on
3309 the Makefile.PL command line), then there is no reason to
3310 assume that the Configure-time $installstyle setting will be
3311 relevant for that PREFIX.
3313 This may later be extended to include other information, so
3314 be careful with pattern-matching on the results.
3316 For compatibility with perl5.005 and earlier, the default
3317 setting is based on whether or not $prefix contains the string
3320 installusrbinperl (instubperl.U):
3321 This variable tells whether Perl should be installed also as
3322 /usr/bin/perl in addition to
3325 installvendorarch (vendorarch.U):
3326 This variable is really the same as vendorarchexp but may differ on
3327 those systems using AFS. For extra portability, only this variable
3328 should be used in makefiles.
3330 installvendorbin (vendorbin.U):
3331 This variable is really the same as vendorbinexp but may differ on
3332 those systems using AFS. For extra portability, only this variable
3333 should be used in makefiles.
3335 installvendorhtml1dir (vendorhtml1dir.U):
3336 This variable is really the same as vendorhtml1direxp but may differ on
3337 those systems using AFS. For extra portability, only this variable
3338 should be used in makefiles.
3340 installvendorhtml3dir (vendorhtml3dir.U):
3341 This variable is really the same as vendorhtml3direxp but may differ on
3342 those systems using AFS. For extra portability, only this variable
3343 should be used in makefiles.
3345 installvendorlib (vendorlib.U):
3346 This variable is really the same as vendorlibexp but may differ on
3347 those systems using AFS. For extra portability, only this variable
3348 should be used in makefiles.
3350 installvendorman1dir (vendorman1dir.U):
3351 This variable is really the same as vendorman1direxp but may differ on
3352 those systems using AFS. For extra portability, only this variable
3353 should be used in makefiles.
3355 installvendorman3dir (vendorman3dir.U):
3356 This variable is really the same as vendorman3direxp but may differ on
3357 those systems using AFS. For extra portability, only this variable
3358 should be used in makefiles.
3360 installvendorscript (vendorscript.U):
3361 This variable is really the same as vendorscriptexp but may differ on
3362 those systems using AFS. For extra portability, only this variable
3363 should be used in makefiles.
3365 intsize (intsize.U):
3366 This variable contains the value of the INTSIZE symbol, which
3367 indicates to the C program how many bytes there are in an int.
3369 issymlink (issymlink.U):
3370 This variable holds the test command to test for a symbolic link
3371 (if they are supported). Typical values include 'test -h' and
3374 ivdformat (perlxvf.U):
3375 This variable contains the format string used for printing
3376 a Perl IV as a signed decimal integer.
3379 This variable is the size of an IV in bytes.
3382 This variable contains the C type used for Perl's IV.
3384 known_extensions (Extensions.U):
3385 This variable holds a list of all XS extensions included in
3389 This variable is defined but not used by Configure.
3390 The value is a plain '' and is not useful.
3393 This variable indicates the program to be used to link
3394 libraries for dynamic loading. On some systems, it is 'ld'.
3395 On ELF systems, it should be $cc. Mostly, we'll try to respect
3396 the hint file setting.
3398 lddlflags (dlsrc.U):
3399 This variable contains any special flags that might need to be
3400 passed to $ld to create a shared library suitable for dynamic
3401 loading. It is up to the makefile to use it. For hpux, it
3402 should be '-b'. For sunos 4.1, it is empty.
3404 ldflags (ccflags.U):
3405 This variable contains any additional C loader flags desired by
3406 the user. It is up to the Makefile to use this.
3408 ldflags_uselargefiles (uselfs.U):
3409 This variable contains the loader flags needed by large file builds
3410 and added to ldflags by hints files.
3412 ldlibpthname (libperl.U):
3413 This variable holds the name of the shared library
3414 search path, often LD_LIBRARY_PATH. To get an empty
3415 string, the hints file must set this to 'none'.
3418 This variable is used internally by Configure to determine the
3419 full pathname (if any) of the less program. After Configure runs,
3420 the value is reset to a plain "less" and is not useful.
3423 This is an old synonym for _a.
3426 This variable contains the location of the C library.
3428 libperl (libperl.U):
3429 The perl executable is obtained by linking perlmain.c with
3430 libperl, any static extensions (usually just DynaLoader),
3431 and any other libraries needed on this system. libperl
3432 is usually libperl.a, but can also be libperl.so.xxx if
3433 the user wishes to build a perl executable with a shared
3437 This variable holds the general path (space-separated) used to find
3438 libraries. It is intended to be used by other units.
3441 This variable holds the additional libraries we want to use.
3442 It is up to the Makefile to deal with it. The list can be empty.
3445 This variable holds the directory names aka dirnames of the libraries
3446 we found and accepted, duplicates are removed.
3449 This variable holds the filenames aka basenames of the libraries
3450 we found and accepted.
3453 This variable holds the full pathnames of the libraries
3454 we found and accepted.
3457 This variable holds the directory names probed for libraries.
3459 libswanted (Myinit.U):
3460 This variable holds a list of all the libraries we want to
3461 search. The order is chosen to pick up the c library
3462 ahead of ucb or bsd libraries for SVR4.
3464 libswanted_uselargefiles (uselfs.U):
3465 This variable contains the libraries needed by large file builds
3466 and added to ldflags by hints files. It is a space separated list
3467 of the library names without the "lib" prefix or any suffix, just
3471 This variable is defined but not used by Configure.
3472 The value is a plain '' and is not useful.
3475 This variable is defined but not used by Configure.
3476 The value is a plain '' and is not useful.
3478 lkflags (ccflags.U):
3479 This variable contains any additional C partial linker flags desired by
3480 the user. It is up to the Makefile to use this.
3483 This variable is used internally by Configure to determine the
3484 full pathname (if any) of the ln program. After Configure runs,
3485 the value is reset to a plain "ln" and is not useful.
3488 This variable holds the name of the command to make
3489 symbolic links (if they are supported). It can be used
3490 in the Makefile. It is either 'ln -s' or 'ln'
3492 localtime_r_proto (d_localtime_r.U):
3493 This variable encodes the prototype of localtime_r.
3494 It is zero if d_localtime_r is undef, and one of the
3495 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3498 locincpth (ccflags.U):
3499 This variable contains a list of additional directories to be
3500 searched by the compiler. The appropriate '-I' directives will
3501 be added to ccflags. This is intended to simplify setting
3502 local directories from the Configure command line.
3503 It's not much, but it parallels the loclibpth stuff in libpth.U.
3505 loclibpth (libpth.U):
3506 This variable holds the paths (space-separated) used to find local
3507 libraries. It is prepended to libpth, and is intended to be easily
3508 set from the command line.
3510 longdblsize (d_longdbl.U):
3511 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3512 indicates to the C program how many bytes there are in a long double,
3513 if this system supports long doubles.
3515 longlongsize (d_longlong.U):
3516 This variable contains the value of the LONGLONGSIZE symbol, which
3517 indicates to the C program how many bytes there are in a long long,
3518 if this system supports long long.
3520 longsize (intsize.U):
3521 This variable contains the value of the LONGSIZE symbol, which
3522 indicates to the C program how many bytes there are in a long.
3525 This variable is defined but not used by Configure.
3526 The value is a plain '' and is not useful.
3529 This variable is defined but not used by Configure.
3530 The value is a plain '' and is not useful.
3533 This variable is used internally by Configure to determine the
3534 full pathname (if any) of the ls program. After Configure runs,
3535 the value is reset to a plain "ls" and is not useful.
3537 lseeksize (lseektype.U):
3538 This variable defines lseektype to be something like off_t, long,
3539 or whatever type is used to declare lseek offset's type in the
3540 kernel (which also appears to be lseek's return type).
3542 lseektype (lseektype.U):
3543 This variable defines lseektype to be something like off_t, long,
3544 or whatever type is used to declare lseek offset's type in the
3545 kernel (which also appears to be lseek's return type).
3548 This variable indicates that the Misc Attribute Definition code is to
3552 If the Misc Attribute Decoration is to be compiled, this variable is
3553 set to the name of the extra header files to be used, else it is ''
3556 If the Misc Attribute Decoration is to be compiled, this variable is
3557 set to the name of the extra object files to be used, else it is ''
3560 If the Misc Attribute Decoration is to be compiled, this variable is
3561 set to the name of the extra C source files to be used, else it is ''
3564 This variable is defined but not used by Configure.
3565 The value is a plain '' and is not useful.
3568 This variable is defined but not used by Configure.
3569 The value is a plain '' and is not useful.
3572 This variable is used internally by Configure to determine the
3573 full pathname (if any) of the make program. After Configure runs,
3574 the value is reset to a plain "make" and is not useful.
3576 make_set_make (make.U):
3577 Some versions of 'make' set the variable MAKE. Others do not.
3578 This variable contains the string to be included in Makefile.SH
3579 so that MAKE is set if needed, and not if not needed.
3580 Possible values are:
3582 make_set_make='#' # If your make program handles this for you,
3584 make_set_make="MAKE=$make" # if it doesn't.
3586 This uses a comment character to distinguish a
3587 'set' value (from a previous config.sh or Configure -D option)
3588 from an uncomputed value.
3590 mallocobj (mallocsrc.U):
3591 This variable contains the name of the malloc.o that this package
3592 generates, if that malloc.o is preferred over the system malloc.
3593 Otherwise the value is null. This variable is intended for generating
3594 Makefiles. See mallocsrc.
3596 mallocsrc (mallocsrc.U):
3597 This variable contains the name of the malloc.c that comes with
3598 the package, if that malloc.c is preferred over the system malloc.
3599 Otherwise the value is null. This variable is intended for generating
3602 malloctype (mallocsrc.U):
3603 This variable contains the kind of ptr returned by malloc and realloc.
3605 man1dir (man1dir.U):
3606 This variable contains the name of the directory in which manual
3607 source pages are to be put. It is the responsibility of the
3608 Makefile.SH to get the value of this into the proper command.
3609 You must be prepared to do the ~name expansion yourself.
3611 man1direxp (man1dir.U):
3612 This variable is the same as the man1dir variable, but is filename
3613 expanded at configuration time, for convenient use in makefiles.
3615 man1ext (man1dir.U):
3616 This variable contains the extension that the manual page should
3617 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3620 man3dir (man3dir.U):
3621 This variable contains the name of the directory in which manual
3622 source pages are to be put. It is the responsibility of the
3623 Makefile.SH to get the value of this into the proper command.
3624 You must be prepared to do the ~name expansion yourself.
3626 man3direxp (man3dir.U):
3627 This variable is the same as the man3dir variable, but is filename
3628 expanded at configuration time, for convenient use in makefiles.
3630 man3ext (man3dir.U):
3631 This variable contains the extension that the manual page should
3632 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3636 This variable is used internally by Configure to determine the
3637 full pathname (if any) of the Mcc program. After Configure runs,
3638 the value is reset to a plain "Mcc" and is not useful.
3640 mips_type (usrinc.U):
3641 This variable holds the environment type for the mips system.
3642 Possible values are "BSD 4.3" and "System V".
3644 mistrustnm (Csym.U):
3645 This variable can be used to establish a fallthrough for the cases
3646 where nm fails to find a symbol. If usenm is false or usenm is true
3647 and mistrustnm is false, this variable has no effect. If usenm is true
3648 and mistrustnm is "compile", a test program will be compiled to try to
3649 find any symbol that can't be located via nm lookup. If mistrustnm is
3650 "run", the test program will be run as well as being compiled.
3653 This variable is used internally by Configure to determine the
3654 full pathname (if any) of the mkdir program. After Configure runs,
3655 the value is reset to a plain "mkdir" and is not useful.
3657 mmaptype (d_mmap.U):
3658 This symbol contains the type of pointer returned by mmap()
3659 (and simultaneously the type of the first argument).
3660 It can be 'void *' or 'caddr_t'.
3662 modetype (modetype.U):
3663 This variable defines modetype to be something like mode_t,
3664 int, unsigned short, or whatever type is used to declare file
3665 modes for system calls.
3668 This variable is used internally by Configure to determine the
3669 full pathname (if any) of the more program. After Configure runs,
3670 the value is reset to a plain "more" and is not useful.
3672 multiarch (multiarch.U):
3673 This variable conditionally defines the MULTIARCH symbol
3674 which signifies the presence of multiplatform files.
3675 This is normally set by hints files.
3678 This variable is defined but not used by Configure.
3679 The value is a plain '' and is not useful.
3681 myarchname (archname.U):
3682 This variable holds the architecture name computed by Configure in
3683 a previous run. It is not intended to be perused by any user and
3684 should never be set in a hint file.
3686 mydomain (myhostname.U):
3687 This variable contains the eventual value of the MYDOMAIN symbol,
3688 which is the domain of the host the program is going to run on.
3689 The domain must be appended to myhostname to form a complete host name.
3690 The dot comes with mydomain, and need not be supplied by the program.
3692 myhostname (myhostname.U):
3693 This variable contains the eventual value of the MYHOSTNAME symbol,
3694 which is the name of the host the program is going to run on.
3695 The domain is not kept with hostname, but must be gotten from mydomain.
3696 The dot comes with mydomain, and need not be supplied by the program.
3698 myuname (Oldconfig.U):
3699 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3700 pseudo variables assignments in the output are stripped, thank you. The
3701 whole thing is then lower-cased.
3704 This variable contains the -n flag if that is what causes the echo
3705 command to suppress newline. Otherwise it is null. Correct usage is
3706 $echo $n "prompt for a question: $c".
3708 need_va_copy (need_va_copy.U):
3709 This symbol, if defined, indicates that the system stores
3710 the variable argument list datatype, va_list, in a format
3711 that cannot be copied by simple assignment, so that some
3712 other means must be used when copying is required.
3713 As such systems vary in their provision (or non-provision)
3714 of copying mechanisms, handy.h defines a platform-
3715 independent macro, Perl_va_copy(src, dst), to do the job.
3717 netdb_hlen_type (netdbtype.U):
3718 This variable holds the type used for the 2nd argument to
3719 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3720 This is only useful if you have gethostbyaddr(), naturally.
3722 netdb_host_type (netdbtype.U):
3723 This variable holds the type used for the 1st argument to
3724 gethostbyaddr(). Usually, this is char * or void *, possibly
3725 with or without a const prefix.
3726 This is only useful if you have gethostbyaddr(), naturally.
3728 netdb_name_type (netdbtype.U):
3729 This variable holds the type used for the argument to
3730 gethostbyname(). Usually, this is char * or const char *.
3731 This is only useful if you have gethostbyname(), naturally.
3733 netdb_net_type (netdbtype.U):
3734 This variable holds the type used for the 1st argument to
3735 getnetbyaddr(). Usually, this is int or long.
3736 This is only useful if you have getnetbyaddr(), naturally.
3739 This variable is used internally by Configure to determine the
3740 full pathname (if any) of the nm program. After Configure runs,
3741 the value is reset to a plain "nm" and is not useful.
3744 This variable holds the options that may be necessary for nm.
3746 nm_so_opt (usenm.U):
3747 This variable holds the options that may be necessary for nm
3748 to work on a shared library but that can not be used on an
3749 archive library. Currently, this is only used by Linux, where
3750 nm --dynamic is *required* to get symbols from an ELF library which
3751 has been stripped, but nm --dynamic is *fatal* on an archive library.
3752 Maybe Linux should just always set usenm=false.
3754 nonxs_ext (Extensions.U):
3755 This variable holds a list of all non-xs extensions included
3756 in the package. All of them will be built.
3759 This variable is used internally by Configure to determine the
3760 full pathname (if any) of the nroff program. After Configure runs,
3761 the value is reset to a plain "nroff" and is not useful.
3763 nv_preserves_uv_bits (perlxv.U):
3764 This variable indicates how many of bits type uvtype
3765 a variable nvtype can preserve.
3767 nveformat (perlxvf.U):
3768 This variable contains the format string used for printing
3769 a Perl NV using %e-ish floating point format.
3771 nvEUformat (perlxvf.U):
3772 This variable contains the format string used for printing
3773 a Perl NV using %E-ish floating point format.
3775 nvfformat (perlxvf.U):
3776 This variable confains the format string used for printing
3777 a Perl NV using %f-ish floating point format.
3779 nvFUformat (perlxvf.U):
3780 This variable confains the format string used for printing
3781 a Perl NV using %F-ish floating point format.
3783 nvgformat (perlxvf.U):
3784 This variable contains the format string used for printing
3785 a Perl NV using %g-ish floating point format.
3787 nvGUformat (perlxvf.U):
3788 This variable contains the format string used for printing
3789 a Perl NV using %G-ish floating point format.
3792 This variable is the size of an NV in bytes.
3795 This variable contains the C type used for Perl's NV.
3797 o_nonblock (nblock_io.U):
3798 This variable bears the symbol value to be used during open() or fcntl()
3799 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3800 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3801 but that is only supported by some devices.
3804 This is an old synonym for _o.
3806 old_pthread_create_joinable (d_pthrattrj.U):
3807 This variable defines the constant to use for creating joinable
3808 (aka undetached) pthreads. Unused if pthread.h defines
3809 PTHREAD_CREATE_JOINABLE. If used, possible values are
3810 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3812 optimize (ccflags.U):
3813 This variable contains any optimizer/debugger flag that should be used.
3814 It is up to the Makefile to use it.
3816 orderlib (orderlib.U):
3817 This variable is "true" if the components of libraries must be ordered
3818 (with `lorder $* | tsort`) before placing them in an archive. Set to
3819 "false" if ranlib or ar can generate random libraries.
3821 osname (Oldconfig.U):
3822 This variable contains the operating system name (e.g. sunos,
3823 solaris, hpux, etc.). It can be useful later on for setting
3824 defaults. Any spaces are replaced with underscores. It is set
3825 to a null string if we can't figure it out.
3827 osvers (Oldconfig.U):
3828 This variable contains the operating system version (e.g.
3829 4.1.3, 5.2, etc.). It is primarily used for helping select
3830 an appropriate hints file, but might be useful elsewhere for
3831 setting defaults. It is set to '' if we can't figure it out.
3832 We try to be flexible about how much of the version number
3833 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3834 same for this package, hints files might just be os_4.0 or
3835 os_4.1, etc., not keeping separate files for each little release.
3837 otherlibdirs (otherlibdirs.U):
3838 This variable contains a colon-separated set of paths for the perl
3839 binary to search for additional library files or modules.
3840 These directories will be tacked to the end of @INC.
3841 Perl will automatically search below each path for version-
3842 and architecture-specific directories. See inc_version_list
3844 A value of ' ' means 'none' and is used to preserve this value
3845 for the next run through Configure.
3847 package (package.U):
3848 This variable contains the name of the package being constructed.
3849 It is primarily intended for the use of later Configure units.
3852 This variable contains the name of the preferred pager on the system.
3853 Usual values are (the full pathnames of) more, less, pg, or cat.
3856 This variable contains a command that produces the text of the
3857 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3858 "ypcat passwd" when NIS is used.
3859 On some systems, such as os390, there may be no equivalent
3860 command, in which case this variable is unset.
3862 patchlevel (patchlevel.U):
3863 The patchlevel level of this package.
3864 The value of patchlevel comes from the patchlevel.h file.
3865 In a version number such as 5.6.1, this is the "6".
3866 In patchlevel.h, this is referred to as "PERL_VERSION".
3869 This is an old synonym for p_ in Head.U, the character
3870 used to separate elements in the command shell search PATH.
3873 This variable is defined but not used by Configure.
3874 The value is a plain '' and is not useful.
3877 This variable contains the full path (if any) to a previously
3878 installed perl5.005 or later suitable for running the script
3879 to determine inc_version_list.
3881 perl_patchlevel (patchlevel.U):
3882 This is the Perl patch level, a numeric change identifier,
3883 as defined by whichever source code maintenance system
3884 is used to maintain the patches; currently Perforce.
3885 It does not correlate with the Perl version numbers or
3886 the maintenance versus development dichotomy except
3887 by also being increasing.
3889 PERL_REVISION (Oldsyms.U):
3890 In a Perl version number such as 5.6.2, this is the 5.
3891 This value is manually set in patchlevel.h
3893 PERL_SUBVERSION (Oldsyms.U):
3894 In a Perl version number such as 5.6.2, this is the 2.
3895 Values greater than 50 represent potentially unstable
3896 development subversions.
3897 This value is manually set in patchlevel.h
3899 PERL_VERSION (Oldsyms.U):
3900 In a Perl version number such as 5.6.2, this is the 6.
3901 This value is manually set in patchlevel.h
3903 perladmin (perladmin.U):
3904 Electronic mail address of the perl5 administrator.
3907 The list of libraries needed by Perl only (any libraries needed
3908 by extensions only will by dropped, if using dynamic loading).
3910 perlpath (perlpath.U):
3911 This variable contains the eventual value of the PERLPATH symbol,
3912 which contains the name of the perl interpreter to be used in
3913 shell scripts and in the "eval 'exec'" idiom. This variable is
3914 not necessarily the pathname of the file containing the perl
3915 interpreter; you must append the executable extension (_exe) if
3916 it is not already present. Note that Perl code that runs during
3917 the Perl build process cannot reference this variable, as Perl
3918 may not have been installed, or even if installed, may be a
3919 different version of Perl.
3922 This variable is used internally by Configure to determine the
3923 full pathname (if any) of the pg program. After Configure runs,
3924 the value is reset to a plain "pg" and is not useful.
3926 phostname (myhostname.U):
3927 This variable contains the eventual value of the PHOSTNAME symbol,
3928 which is a command that can be fed to popen() to get the host name.
3929 The program should probably not presume that the domain is or isn't
3932 pidtype (pidtype.U):
3933 This variable defines PIDTYPE to be something like pid_t, int,
3934 ushort, or whatever type is used to declare process ids in the kernel.
3937 Holds the private path used by Configure to find out the libraries.
3938 Its value is prepend to libpth. This variable takes care of special
3939 machines, like the mips. Usually, it should be empty.
3942 This variable is defined but not used by Configure.
3943 The value is a plain '' and is not useful.
3946 This variable is defined but not used by Configure.
3947 The value is a plain '' and is not useful.
3950 This variable holds the name of the directory below which the
3951 user will install the package. Usually, this is /usr/local, and
3952 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3953 man pages in /usr/local/man, etc. It is only used to set defaults
3954 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3956 prefixexp (prefix.U):
3957 This variable holds the full absolute path of the directory below
3958 which the user will install the package. Derived from prefix.
3960 privlib (privlib.U):
3961 This variable contains the eventual value of the PRIVLIB symbol,
3962 which is the name of the private library for this package. It may
3963 have a ~ on the front. It is up to the makefile to eventually create
3964 this directory while performing installation (with ~ substitution).
3966 privlibexp (privlib.U):
3967 This variable is the ~name expanded version of privlib, so that you
3968 may use it directly in Makefiles or shell scripts.
3970 procselfexe (d_procselfexe.U):
3971 If d_procselfexe is defined, $procselfexe is the filename
3972 of the symbolic link pointing to the absolute pathname of
3973 the executing program.
3975 prototype (prototype.U):
3976 This variable holds the eventual value of CAN_PROTOTYPE, which
3977 indicates the C compiler can handle funciton prototypes.
3979 ptrsize (ptrsize.U):
3980 This variable contains the value of the PTRSIZE symbol, which
3981 indicates to the C program how many bytes there are in a pointer.
3983 quadkind (quadtype.U):
3984 This variable, if defined, encodes the type of a quad:
3985 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3987 quadtype (quadtype.U):
3988 This variable defines Quad_t to be something like long, int,
3989 long long, int64_t, or whatever type is used for 64-bit integers.
3991 randbits (randfunc.U):
3992 Indicates how many bits are produced by the function used to
3993 generate normalized random numbers.
3995 randfunc (randfunc.U):
3996 Indicates the name of the random number function to use.
3997 Values include drand48, random, and rand. In C programs,
3998 the 'Drand01' macro is defined to generate uniformly distributed
3999 random numbers over the range [0., 1.[ (see drand01 and nrand).
4001 random_r_proto (d_random_r.U):
4002 This variable encodes the prototype of random_r.
4003 It is zero if d_random_r is undef, and one of the
4004 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4007 randseedtype (randfunc.U):
4008 Indicates the type of the argument of the seedfunc.
4010 ranlib (orderlib.U):
4011 This variable is set to the pathname of the ranlib program, if it is
4012 needed to generate random libraries. Set to ":" if ar can generate
4013 random libraries or if random libraries are not supported
4015 rd_nodata (nblock_io.U):
4016 This variable holds the return code from read() when no data is
4017 present. It should be -1, but some systems return 0 when O_NDELAY is
4018 used, which is a shame because you cannot make the difference between
4019 no data and an EOF.. Sigh!
4021 readdir64_r_proto (d_readdir64_r.U):
4022 This variable encodes the prototype of readdir64_r.
4023 It is zero if d_readdir64_r is undef, and one of the
4024 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4027 readdir_r_proto (d_readdir_r.U):
4028 This variable encodes the prototype of readdir_r.
4029 It is zero if d_readdir_r is undef, and one of the
4030 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4033 revision (patchlevel.U):
4034 The value of revision comes from the patchlevel.h file.
4035 In a version number such as 5.6.1, this is the "5".
4036 In patchlevel.h, this is referred to as "PERL_REVISION".
4039 This variable is used internally by Configure to determine the
4040 full pathname (if any) of the rm program. After Configure runs,
4041 the value is reset to a plain "rm" and is not useful.
4044 This variable is defined but not used by Configure.
4045 The value is a plain '' and is not useful.
4048 This variable contains the command used by Configure
4049 to copy and execute a cross-compiled executable in the
4050 target host. Useful and available only during Perl build.
4051 Empty string '' if not cross-compiling.
4054 This variable contains 'true' or 'false' depending whether the
4055 nm extraction should be performed or not, according to the value
4056 of usenm and the flags on the Configure command line.
4058 sched_yield (d_pthread_y.U):
4059 This variable defines the way to yield the execution
4060 of the current thread.
4062 scriptdir (scriptdir.U):
4063 This variable holds the name of the directory in which the user wants
4064 to put publicly scripts for the package in question. It is either
4065 the same directory as for binaries, or a special one that can be
4066 mounted across different architectures, like /usr/share. Programs
4067 must be prepared to deal with ~name expansion.
4069 scriptdirexp (scriptdir.U):
4070 This variable is the same as scriptdir, but is filename expanded
4071 at configuration time, for programs not wanting to bother with it.
4074 This variable is used internally by Configure to determine the
4075 full pathname (if any) of the sed program. After Configure runs,
4076 the value is reset to a plain "sed" and is not useful.
4078 seedfunc (randfunc.U):
4079 Indicates the random number generating seed function.
4080 Values include srand48, srandom, and srand.
4082 selectminbits (selectminbits.U):
4083 This variable holds the minimum number of bits operated by select.
4084 That is, if you do select(n, ...), how many bits at least will be
4085 cleared in the masks if some activity is detected. Usually this
4086 is either n or 32*ceil(n/32), especially many little-endians do
4087 the latter. This is only useful if you have select(), naturally.
4089 selecttype (selecttype.U):
4090 This variable holds the type used for the 2nd, 3rd, and 4th
4091 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4092 is defined, and 'int *' otherwise. This is only useful if you
4093 have select(), naturally.
4096 This variable is defined but not used by Configure.
4097 The value is a plain '' and is not useful.
4099 setgrent_r_proto (d_setgrent_r.U):
4100 This variable encodes the prototype of setgrent_r.
4101 It is zero if d_setgrent_r is undef, and one of the
4102 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4105 sethostent_r_proto (d_sethostent_r.U):
4106 This variable encodes the prototype of sethostent_r.
4107 It is zero if d_sethostent_r is undef, and one of the
4108 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4111 setlocale_r_proto (d_setlocale_r.U):
4112 This variable encodes the prototype of setlocale_r.
4113 It is zero if d_setlocale_r is undef, and one of the
4114 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4117 setnetent_r_proto (d_setnetent_r.U):
4118 This variable encodes the prototype of setnetent_r.
4119 It is zero if d_setnetent_r is undef, and one of the
4120 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4123 setprotoent_r_proto (d_setprotoent_r.U):
4124 This variable encodes the prototype of setprotoent_r.
4125 It is zero if d_setprotoent_r is undef, and one of the
4126 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4129 setpwent_r_proto (d_setpwent_r.U):
4130 This variable encodes the prototype of setpwent_r.
4131 It is zero if d_setpwent_r is undef, and one of the
4132 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4135 setservent_r_proto (d_setservent_r.U):
4136 This variable encodes the prototype of setservent_r.
4137 It is zero if d_setservent_r is undef, and one of the
4138 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4142 This variable contains the full pathname of the shell used
4143 on this system to execute Bourne shell scripts. Usually, this will be
4144 /bin/sh, though it's possible that some systems will have /bin/ksh,
4145 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4147 This unit comes before Options.U, so you can't set sh with a -D
4148 option, though you can override this (and startsh)
4149 with -O -Dsh=/bin/whatever -Dstartsh=whatever
4152 This variable is defined but not used by Configure.
4153 The value is a plain '' and is not useful.
4155 sharpbang (spitshell.U):
4156 This variable contains the string #! if this system supports that
4159 shmattype (d_shmat.U):
4160 This symbol contains the type of pointer returned by shmat().
4161 It can be 'void *' or 'char *'.
4163 shortsize (intsize.U):
4164 This variable contains the value of the SHORTSIZE symbol which
4165 indicates to the C program how many bytes there are in a short.
4167 shrpenv (libperl.U):
4168 If the user builds a shared libperl.so, then we need to tell the
4169 'perl' executable where it will be able to find the installed libperl.so.
4170 One way to do this on some systems is to set the environment variable
4171 LD_RUN_PATH to the directory that will be the final location of the
4172 shared libperl.so. The makefile can use this with something like
4173 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4175 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4178 See the main perl Makefile.SH for actual working usage.
4179 Alternatively, we might be able to use a command line option such
4180 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4181 $archlibexp/CORE (Linux).
4183 shsharp (spitshell.U):
4184 This variable tells further Configure units whether your sh can
4187 sig_count (sig_name.U):
4188 This variable holds a number larger than the largest valid
4189 signal number. This is usually the same as the NSIG macro.
4191 sig_name (sig_name.U):
4192 This variable holds the signal names, space separated. The leading
4193 SIG in signal name is removed. A ZERO is prepended to the list.
4194 This is currently not used, sig_name_init is used instead.
4196 sig_name_init (sig_name.U):
4197 This variable holds the signal names, enclosed in double quotes and
4198 separated by commas, suitable for use in the SIG_NAME definition
4199 below. A "ZERO" is prepended to the list, and the list is
4200 terminated with a plain 0. The leading SIG in signal names
4201 is removed. See sig_num.
4203 sig_num (sig_name.U):
4204 This variable holds the signal numbers, space separated. A ZERO is
4205 prepended to the list (corresponding to the fake SIGZERO).
4206 Those numbers correspond to the value of the signal listed
4207 in the same place within the sig_name list.
4208 This is currently not used, sig_num_init is used instead.
4210 sig_num_init (sig_name.U):
4211 This variable holds the signal numbers, enclosed in double quotes and
4212 separated by commas, suitable for use in the SIG_NUM definition
4213 below. A "ZERO" is prepended to the list, and the list is
4214 terminated with a plain 0.
4216 sig_size (sig_name.U):
4217 This variable contains the number of elements of the sig_name
4220 signal_t (d_voidsig.U):
4221 This variable holds the type of the signal handler (void or int).
4223 sitearch (sitearch.U):
4224 This variable contains the eventual value of the SITEARCH symbol,
4225 which is the name of the private library for this package. It may
4226 have a ~ on the front. It is up to the makefile to eventually create
4227 this directory while performing installation (with ~ substitution).
4228 The standard distribution will put nothing in this directory.
4229 After perl has been installed, users may install their own local
4230 architecture-dependent modules in this directory with
4231 MakeMaker Makefile.PL
4232 or equivalent. See INSTALL for details.
4234 sitearchexp (sitearch.U):
4235 This variable is the ~name expanded version of sitearch, so that you
4236 may use it directly in Makefiles or shell scripts.
4238 sitebin (sitebin.U):
4239 This variable holds the name of the directory in which the user wants
4240 to put add-on publicly executable files for the package in question. It
4241 is most often a local directory such as /usr/local/bin. Programs using
4242 this variable must be prepared to deal with ~name substitution.
4243 The standard distribution will put nothing in this directory.
4244 After perl has been installed, users may install their own local
4245 executables in this directory with
4246 MakeMaker Makefile.PL
4247 or equivalent. See INSTALL for details.
4249 sitebinexp (sitebin.U):
4250 This is the same as the sitebin variable, but is filename expanded at
4251 configuration time, for use in your makefiles.
4253 sitehtml1dir (sitehtml1dir.U):
4254 This variable contains the name of the directory in which site-specific
4255 html source pages are to be put. It is the responsibility of the
4256 Makefile.SH to get the value of this into the proper command.
4257 You must be prepared to do the ~name expansion yourself.
4258 The standard distribution will put nothing in this directory.
4259 After perl has been installed, users may install their own local
4260 html pages in this directory with
4261 MakeMaker Makefile.PL
4262 or equivalent. See INSTALL for details.
4264 sitehtml1direxp (sitehtml1dir.U):
4265 This variable is the same as the sitehtml1dir variable, but is filename
4266 expanded at configuration time, for convenient use in makefiles.
4268 sitehtml3dir (sitehtml3dir.U):
4269 This variable contains the name of the directory in which site-specific
4270 library html source pages are to be put. It is the responsibility of the
4271 Makefile.SH to get the value of this into the proper command.
4272 You must be prepared to do the ~name expansion yourself.
4273 The standard distribution will put nothing in this directory.
4274 After perl has been installed, users may install their own local
4275 library html pages in this directory with
4276 MakeMaker Makefile.PL
4277 or equivalent. See INSTALL for details.
4279 sitehtml3direxp (sitehtml3dir.U):
4280 This variable is the same as the sitehtml3dir variable, but is filename
4281 expanded at configuration time, for convenient use in makefiles.
4283 sitelib (sitelib.U):
4284 This variable contains the eventual value of the SITELIB symbol,
4285 which is the name of the private library for this package. It may
4286 have a ~ on the front. It is up to the makefile to eventually create
4287 this directory while performing installation (with ~ substitution).
4288 The standard distribution will put nothing in this directory.
4289 After perl has been installed, users may install their own local
4290 architecture-independent modules in this directory with
4291 MakeMaker Makefile.PL
4292 or equivalent. See INSTALL for details.
4294 sitelib_stem (sitelib.U):
4295 This variable is $sitelibexp with any trailing version-specific component
4296 removed. The elements in inc_version_list (inc_version_list.U) can
4297 be tacked onto this variable to generate a list of directories to search.
4299 sitelibexp (sitelib.U):
4300 This variable is the ~name expanded version of sitelib, so that you
4301 may use it directly in Makefiles or shell scripts.
4303 siteman1dir (siteman1dir.U):
4304 This variable contains the name of the directory in which site-specific
4305 manual source pages are to be put. It is the responsibility of the
4306 Makefile.SH to get the value of this into the proper command.
4307 You must be prepared to do the ~name expansion yourself.
4308 The standard distribution will put nothing in this directory.
4309 After perl has been installed, users may install their own local
4310 man1 pages in this directory with
4311 MakeMaker Makefile.PL
4312 or equivalent. See INSTALL for details.
4314 siteman1direxp (siteman1dir.U):
4315 This variable is the same as the siteman1dir variable, but is filename
4316 expanded at configuration time, for convenient use in makefiles.
4318 siteman3dir (siteman3dir.U):
4319 This variable contains the name of the directory in which site-specific
4320 library man source pages are to be put. It is the responsibility of the
4321 Makefile.SH to get the value of this into the proper command.
4322 You must be prepared to do the ~name expansion yourself.
4323 The standard distribution will put nothing in this directory.
4324 After perl has been installed, users may install their own local
4325 man3 pages in this directory with
4326 MakeMaker Makefile.PL
4327 or equivalent. See INSTALL for details.
4329 siteman3direxp (siteman3dir.U):
4330 This variable is the same as the siteman3dir variable, but is filename
4331 expanded at configuration time, for convenient use in makefiles.
4333 siteprefix (siteprefix.U):
4334 This variable holds the full absolute path of the directory below
4335 which the user will install add-on packages.
4336 See INSTALL for usage and examples.
4338 siteprefixexp (siteprefix.U):
4339 This variable holds the full absolute path of the directory below
4340 which the user will install add-on packages. Derived from siteprefix.
4342 sitescript (sitescript.U):
4343 This variable holds the name of the directory in which the user wants
4344 to put add-on publicly executable files for the package in question. It
4345 is most often a local directory such as /usr/local/bin. Programs using
4346 this variable must be prepared to deal with ~name substitution.
4347 The standard distribution will put nothing in this directory.
4348 After perl has been installed, users may install their own local
4349 scripts in this directory with
4350 MakeMaker Makefile.PL
4351 or equivalent. See INSTALL for details.
4353 sitescriptexp (sitescript.U):
4354 This is the same as the sitescript variable, but is filename expanded at
4355 configuration time, for use in your makefiles.
4357 sizesize (sizesize.U):
4358 This variable contains the size of a sizetype in bytes.
4360 sizetype (sizetype.U):
4361 This variable defines sizetype to be something like size_t,
4362 unsigned long, or whatever type is used to declare length
4363 parameters for string functions.
4366 This variable is defined but not used by Configure.
4367 The value is a plain '' and is not useful.
4370 This variable is defined but not used by Configure.
4371 The value is a plain '' and is not useful.
4374 This variable holds the extension used to identify shared libraries
4375 (also known as shared objects) on the system. Usually set to 'so'.
4377 sockethdr (d_socket.U):
4378 This variable has any cpp '-I' flags needed for socket support.
4380 socketlib (d_socket.U):
4381 This variable has the names of any libraries needed for socket support.
4383 socksizetype (socksizetype.U):
4384 This variable holds the type used for the size argument
4385 for various socket calls like accept. Usual values include
4386 socklen_t, size_t, and int.
4389 This variable is used internally by Configure to determine the
4390 full pathname (if any) of the sort program. After Configure runs,
4391 the value is reset to a plain "sort" and is not useful.
4393 spackage (package.U):
4394 This variable contains the name of the package being constructed,
4395 with the first letter uppercased, i.e. suitable for starting
4398 spitshell (spitshell.U):
4399 This variable contains the command necessary to spit out a runnable
4400 shell on this system. It is either cat or a grep -v for # comments.
4402 sPRId64 (quadfio.U):
4403 This variable, if defined, contains the string used by stdio to
4404 format 64-bit decimal numbers (format 'd') for output.
4406 sPRIeldbl (longdblfio.U):
4407 This variable, if defined, contains the string used by stdio to
4408 format long doubles (format 'e') for output.
4410 sPRIEUldbl (longdblfio.U):
4411 This variable, if defined, contains the string used by stdio to
4412 format long doubles (format 'E') for output.
4413 The 'U' in the name is to separate this from sPRIeldbl so that even
4414 case-blind systems can see the difference.
4416 sPRIfldbl (longdblfio.U):
4417 This variable, if defined, contains the string used by stdio to
4418 format long doubles (format 'f') for output.
4420 sPRIFUldbl (longdblfio.U):
4421 This variable, if defined, contains the string used by stdio to
4422 format long doubles (format 'F') for output.
4423 The 'U' in the name is to separate this from sPRIfldbl so that even
4424 case-blind systems can see the difference.
4426 sPRIgldbl (longdblfio.U):
4427 This variable, if defined, contains the string used by stdio to
4428 format long doubles (format 'g') for output.
4430 sPRIGUldbl (longdblfio.U):
4431 This variable, if defined, contains the string used by stdio to
4432 format long doubles (format 'G') for output.
4433 The 'U' in the name is to separate this from sPRIgldbl so that even
4434 case-blind systems can see the difference.
4436 sPRIi64 (quadfio.U):
4437 This variable, if defined, contains the string used by stdio to
4438 format 64-bit decimal numbers (format 'i') for output.
4440 sPRIo64 (quadfio.U):
4441 This variable, if defined, contains the string used by stdio to
4442 format 64-bit octal numbers (format 'o') for output.
4444 sPRIu64 (quadfio.U):
4445 This variable, if defined, contains the string used by stdio to
4446 format 64-bit unsigned decimal numbers (format 'u') for output.
4448 sPRIx64 (quadfio.U):
4449 This variable, if defined, contains the string used by stdio to
4450 format 64-bit hexadecimal numbers (format 'x') for output.
4452 sPRIXU64 (quadfio.U):
4453 This variable, if defined, contains the string used by stdio to
4454 format 64-bit hExADECimAl numbers (format 'X') for output.
4455 The 'U' in the name is to separate this from sPRIx64 so that even
4456 case-blind systems can see the difference.
4458 srand48_r_proto (d_srand48_r.U):
4459 This variable encodes the prototype of srand48_r.
4460 It is zero if d_srand48_r is undef, and one of the
4461 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4464 srandom_r_proto (d_srandom_r.U):
4465 This variable encodes the prototype of srandom_r.
4466 It is zero if d_srandom_r is undef, and one of the
4467 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4471 This variable holds the path to the package source. It is up to
4472 the Makefile to use this variable and set VPATH accordingly to
4473 find the sources remotely.
4475 sSCNfldbl (longdblfio.U):
4476 This variable, if defined, contains the string used by stdio to
4477 format long doubles (format 'f') for input.
4479 ssizetype (ssizetype.U):
4480 This variable defines ssizetype to be something like ssize_t,
4481 long or int. It is used by functions that return a count
4482 of bytes or an error condition. It must be a signed type.
4483 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4485 startperl (startperl.U):
4486 This variable contains the string to put on the front of a perl
4487 script to make sure (hopefully) that it runs with perl and not some
4488 shell. Of course, that leading line must be followed by the classical
4490 eval 'exec perl -S $0 ${1+"$@"}'
4491 if $running_under_some_shell;
4492 to guarantee perl startup should the shell execute the script. Note
4493 that this magic incatation is not understood by csh.
4495 startsh (startsh.U):
4496 This variable contains the string to put on the front of a shell
4497 script to make sure (hopefully) that it runs with sh and not some
4500 static_ext (Extensions.U):
4501 This variable holds a list of XS extension files we want to
4502 link statically into the package. It is used by Makefile.
4504 stdchar (stdchar.U):
4505 This variable conditionally defines STDCHAR to be the type of char
4506 used in stdio.h. It has the values "unsigned char" or "char".
4508 stdio_base (d_stdstdio.U):
4509 This variable defines how, given a FILE pointer, fp, to access the
4510 _base field (or equivalent) of stdio.h's FILE structure. This will
4511 be used to define the macro FILE_base(fp).
4513 stdio_bufsiz (d_stdstdio.U):
4514 This variable defines how, given a FILE pointer, fp, to determine
4515 the number of bytes store in the I/O buffer pointer to by the
4516 _base field (or equivalent) of stdio.h's FILE structure. This will
4517 be used to define the macro FILE_bufsiz(fp).
4519 stdio_cnt (d_stdstdio.U):
4520 This variable defines how, given a FILE pointer, fp, to access the
4521 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4522 be used to define the macro FILE_cnt(fp).
4524 stdio_filbuf (d_stdstdio.U):
4525 This variable defines how, given a FILE pointer, fp, to tell
4526 stdio to refill its internal buffers (?). This will
4527 be used to define the macro FILE_filbuf(fp).
4529 stdio_ptr (d_stdstdio.U):
4530 This variable defines how, given a FILE pointer, fp, to access the
4531 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4532 be used to define the macro FILE_ptr(fp).
4534 stdio_stream_array (stdio_streams.U):
4535 This variable tells the name of the array holding the stdio streams.
4536 Usual values include _iob, __iob, and __sF.
4538 strerror_r_proto (d_strerror_r.U):
4539 This variable encodes the prototype of strerror_r.
4540 It is zero if d_strerror_r is undef, and one of the
4541 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4544 strings (i_string.U):
4545 This variable holds the full path of the string header that will be
4546 used. Typically /usr/include/string.h or /usr/include/strings.h.
4549 This variable is defined but not used by Configure.
4550 The value is a plain '' and is not useful.
4552 subversion (patchlevel.U):
4553 The subversion level of this package.
4554 The value of subversion comes from the patchlevel.h file.
4555 In a version number such as 5.6.1, this is the "1".
4556 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4557 This is unique to perl.
4560 This variable holds the place where the manual is located on this
4561 system. It is not the place where the user wants to put his manual
4562 pages. Rather it is the place where Configure may look to find manual
4563 for unix commands (section 1 of the manual usually). See mansrc.
4566 This variable is defined but not used by Configure.
4567 The value is a plain '' and is not useful.
4570 This variable is defined but not used by Configure.
4571 The value is a plain '' and is not useful.
4573 targetarch (Cross.U):
4574 If cross-compiling, this variable contains the target architecture.
4575 If not, this will be empty.
4578 This variable is defined but not used by Configure.
4579 The value is a plain '' and is not useful.
4582 This variable is defined but not used by Configure.
4583 The value is a plain '' and is not useful.
4586 This variable is used internally by Configure to determine the
4587 full pathname (if any) of the test program. After Configure runs,
4588 the value is reset to a plain "test" and is not useful.
4590 timeincl (i_time.U):
4591 This variable holds the full path of the included time header(s).
4593 timetype (d_time.U):
4594 This variable holds the type returned by time(). It can be long,
4595 or time_t on BSD sites (in which case <sys/types.h> should be
4596 included). Anyway, the type Time_t should be used.
4598 tmpnam_r_proto (d_tmpnam_r.U):
4599 This variable encodes the prototype of tmpnam_r.
4600 It is zero if d_tmpnam_r is undef, and one of the
4601 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4605 This variable contains the command used by Configure
4606 to copy to from the target host. Useful and available
4607 only during Perl build.
4608 The string ':' if not cross-compiling.
4611 This variable is used internally by Configure to determine the
4612 full pathname (if any) of the touch program. After Configure runs,
4613 the value is reset to a plain "touch" and is not useful.
4616 This variable is used internally by Configure to determine the
4617 full pathname (if any) of the tr program. After Configure runs,
4618 the value is reset to a plain "tr" and is not useful.
4621 This variable contains the value to be passed to the tr(1)
4622 command to transliterate a newline. Typical values are
4623 '\012' and '\n'. This is needed for EBCDIC systems where
4624 newline is not necessarily '\012'.
4627 This variable is defined but not used by Configure.
4628 The value is a plain '' and is not useful.
4630 ttyname_r_proto (d_ttyname_r.U):
4631 This variable encodes the prototype of ttyname_r.
4632 It is zero if d_ttyname_r is undef, and one of the
4633 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4637 This variable is the size of an U16 in bytes.
4640 This variable contains the C type used for Perl's U16.
4643 This variable is the size of an U32 in bytes.
4646 This variable contains the C type used for Perl's U32.
4649 This variable is the size of an U64 in bytes.
4652 This variable contains the C type used for Perl's U64.
4655 This variable is the size of an U8 in bytes.
4658 This variable contains the C type used for Perl's U8.
4661 This variable contains the format string used for printing a Uid_t.
4663 uidsign (uidsign.U):
4664 This variable contains the signedness of a uidtype.
4665 1 for unsigned, -1 for signed.
4667 uidsize (uidsize.U):
4668 This variable contains the size of a uidtype in bytes.
4670 uidtype (uidtype.U):
4671 This variable defines Uid_t to be something like uid_t, int,
4672 ushort, or whatever type is used to declare user ids in the kernel.
4675 This variable is used internally by Configure to determine the
4676 full pathname (if any) of the uname program. After Configure runs,
4677 the value is reset to a plain "uname" and is not useful.
4680 This variable is used internally by Configure to determine the
4681 full pathname (if any) of the uniq program. After Configure runs,
4682 the value is reset to a plain "uniq" and is not useful.
4684 uquadtype (quadtype.U):
4685 This variable defines Uquad_t to be something like unsigned long,
4686 unsigned int, unsigned long long, uint64_t, or whatever type is
4687 used for 64-bit integers.
4689 use5005threads (usethreads.U):
4690 This variable conditionally defines the USE_5005THREADS symbol,
4691 and indicates that Perl should be built to use the 5.005-based
4692 threading implementation.
4694 use64bitall (use64bits.U):
4695 This variable conditionally defines the USE_64_BIT_ALL symbol,
4696 and indicates that 64-bit integer types should be used
4697 when available. The maximal possible
4698 64-bitness is employed: LP64 or ILP64, meaning that you will
4699 be able to use more than 2 gigabytes of memory. This mode is
4700 even more binary incompatible than USE_64_BIT_INT. You may not
4701 be able to run the resulting executable in a 32-bit CPU at all or
4702 you may need at least to reboot your OS to 64-bit mode.
4704 use64bitint (use64bits.U):
4705 This variable conditionally defines the USE_64_BIT_INT symbol,
4706 and indicates that 64-bit integer types should be used
4707 when available. The minimal possible 64-bitness
4708 is employed, just enough to get 64-bit integers into Perl.
4709 This may mean using for example "long longs", while your memory
4710 may still be limited to 2 gigabytes.
4712 usecrosscompile (Cross.U):
4713 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4714 and indicates that Perl has been cross-compiled.
4717 This variable indicates if the system supports dynamic
4718 loading of some sort. See also dlsrc and dlobj.
4720 usefaststdio (usefaststdio.U):
4721 This variable conditionally defines the USE_FAST_STDIO symbol,
4722 and indicates that Perl should be built to use 'fast stdio'.
4723 Defaults to define in Perls 5.8 and earlier, to undef later.
4725 useithreads (usethreads.U):
4726 This variable conditionally defines the USE_ITHREADS symbol,
4727 and indicates that Perl should be built to use the interpreter-based
4728 threading implementation.
4730 uselargefiles (uselfs.U):
4731 This variable conditionally defines the USE_LARGE_FILES symbol,
4732 and indicates that large file interfaces should be used when
4735 uselongdouble (uselongdbl.U):
4736 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4737 and indicates that long doubles should be used when available.
4739 usemallocwrap (mallocsrc.U):
4740 This variable contains y if we are wrapping malloc to prevent
4741 integer overflow during size calculations.
4743 usemorebits (usemorebits.U):
4744 This variable conditionally defines the USE_MORE_BITS symbol,
4745 and indicates that explicit 64-bit interfaces and long doubles
4746 should be used when available.
4748 usemultiplicity (usemultiplicity.U):
4749 This variable conditionally defines the MULTIPLICITY symbol,
4750 and indicates that Perl should be built to use multiplicity.
4752 usemymalloc (mallocsrc.U):
4753 This variable contains y if the malloc that comes with this package
4754 is desired over the system's version of malloc. People often include
4755 special versions of malloc for effiency, but such versions are often
4756 less portable. See also mallocsrc and mallocobj.
4757 If this is 'y', then -lmalloc is removed from $libs.
4760 This variable contains 'true' or 'false' depending whether the
4761 nm extraction is wanted or not.
4763 useopcode (Extensions.U):
4764 This variable holds either 'true' or 'false' to indicate
4765 whether the Opcode extension should be used. The sole
4766 use for this currently is to allow an easy mechanism
4767 for users to skip the Opcode extension from the Configure
4770 useperlio (useperlio.U):
4771 This variable conditionally defines the USE_PERLIO symbol,
4772 and indicates that the PerlIO abstraction should be
4775 useposix (Extensions.U):
4776 This variable holds either 'true' or 'false' to indicate
4777 whether the POSIX extension should be used. The sole
4778 use for this currently is to allow an easy mechanism
4779 for hints files to indicate that POSIX will not compile
4780 on a particular system.
4782 usereentrant (usethreads.U):
4783 This variable conditionally defines the USE_REENTRANT_API symbol,
4784 which indicates that the thread code may try to use the various
4785 _r versions of library functions. This is only potentially
4786 meaningful if usethreads is set and is very experimental, it is
4787 not even prompted for.
4789 userelocatableinc (bin.U):
4790 This variable is set to true to indicate that perl should relocate
4791 @INC entries at runtime based on the path to the perl binary.
4792 Any @INC paths starting ".../" are relocated relative to the directory
4793 containing the perl binary, and a logical cleanup of the path is then
4794 made around the join point (removing "dir/../" pairs)
4797 This variable is set to true when the user agrees to use sfio.
4798 It is set to false when sfio is not available or when the user
4799 explicitely requests not to use sfio. It is here primarily so
4800 that command-line settings can override the auto-detection of
4801 d_sfio without running into a "WHOA THERE".
4803 useshrplib (libperl.U):
4804 This variable is set to 'true' if the user wishes
4805 to build a shared libperl, and 'false' otherwise.
4807 usesitecustomize (d_sitecustomize.U):
4808 This variable is set to true when the user requires a mechanism that
4809 allows the sysadmin to add entries to @INC at runtime. This variable
4810 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
4812 usesocks (usesocks.U):
4813 This variable conditionally defines the USE_SOCKS symbol,
4814 and indicates that Perl should be built to use SOCKS.
4816 usethreads (usethreads.U):
4817 This variable conditionally defines the USE_THREADS symbol,
4818 and indicates that Perl should be built to use threads.
4820 usevendorprefix (vendorprefix.U):
4821 This variable tells whether the vendorprefix
4822 and consequently other vendor* paths are in use.
4824 usevfork (d_vfork.U):
4825 This variable is set to true when the user accepts to use vfork.
4826 It is set to false when no vfork is available or when the user
4827 explicitely requests not to use vfork.
4830 This variable holds the path of the include files, which is
4831 usually /usr/include. It is mainly used by other Configure units.
4834 This variable is defined but not used by Configure.
4835 The value is a plain '' and is not useful.
4837 uvoformat (perlxvf.U):
4838 This variable contains the format string used for printing
4839 a Perl UV as an unsigned octal integer.
4842 This variable is the size of a UV in bytes.
4845 This variable contains the C type used for Perl's UV.
4847 uvuformat (perlxvf.U):
4848 This variable contains the format string used for printing
4849 a Perl UV as an unsigned decimal integer.
4851 uvxformat (perlxvf.U):
4852 This variable contains the format string used for printing
4853 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4855 uvXUformat (perlxvf.U):
4856 This variable contains the format string used for printing
4857 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4859 vendorarch (vendorarch.U):
4860 This variable contains the value of the PERL_VENDORARCH symbol.
4861 It may have a ~ on the front.
4862 The standard distribution will put nothing in this directory.
4863 Vendors who distribute perl may wish to place their own
4864 architecture-dependent modules and extensions in this directory with
4865 MakeMaker Makefile.PL INSTALLDIRS=vendor
4866 or equivalent. See INSTALL for details.
4868 vendorarchexp (vendorarch.U):
4869 This variable is the ~name expanded version of vendorarch, so that you
4870 may use it directly in Makefiles or shell scripts.
4872 vendorbin (vendorbin.U):
4873 This variable contains the eventual value of the VENDORBIN symbol.
4874 It may have a ~ on the front.
4875 The standard distribution will put nothing in this directory.
4876 Vendors who distribute perl may wish to place additional
4877 binaries in this directory with
4878 MakeMaker Makefile.PL INSTALLDIRS=vendor
4879 or equivalent. See INSTALL for details.
4881 vendorbinexp (vendorbin.U):
4882 This variable is the ~name expanded version of vendorbin, so that you
4883 may use it directly in Makefiles or shell scripts.
4885 vendorhtml1dir (vendorhtml1dir.U):
4886 This variable contains the name of the directory for html
4887 pages. It may have a ~ on the front.
4888 The standard distribution will put nothing in this directory.
4889 Vendors who distribute perl may wish to place their own
4890 html pages in this directory with
4891 MakeMaker Makefile.PL INSTALLDIRS=vendor
4892 or equivalent. See INSTALL for details.
4894 vendorhtml1direxp (vendorhtml1dir.U):
4895 This variable is the ~name expanded version of vendorhtml1dir, so that you
4896 may use it directly in Makefiles or shell scripts.
4898 vendorhtml3dir (vendorhtml3dir.U):
4899 This variable contains the name of the directory for html
4900 library pages. It may have a ~ on the front.
4901 The standard distribution will put nothing in this directory.
4902 Vendors who distribute perl may wish to place their own
4903 html pages for modules and extensions in this directory with
4904 MakeMaker Makefile.PL INSTALLDIRS=vendor
4905 or equivalent. See INSTALL for details.
4907 vendorhtml3direxp (vendorhtml3dir.U):
4908 This variable is the ~name expanded version of vendorhtml3dir, so that you
4909 may use it directly in Makefiles or shell scripts.
4911 vendorlib (vendorlib.U):
4912 This variable contains the eventual value of the VENDORLIB symbol,
4913 which is the name of the private library for this package.
4914 The standard distribution will put nothing in this directory.
4915 Vendors who distribute perl may wish to place their own
4916 modules in this directory with
4917 MakeMaker Makefile.PL INSTALLDIRS=vendor
4918 or equivalent. See INSTALL for details.
4920 vendorlib_stem (vendorlib.U):
4921 This variable is $vendorlibexp with any trailing version-specific component
4922 removed. The elements in inc_version_list (inc_version_list.U) can
4923 be tacked onto this variable to generate a list of directories to search.
4925 vendorlibexp (vendorlib.U):
4926 This variable is the ~name expanded version of vendorlib, so that you
4927 may use it directly in Makefiles or shell scripts.
4929 vendorman1dir (vendorman1dir.U):
4930 This variable contains the name of the directory for man1
4931 pages. It may have a ~ on the front.
4932 The standard distribution will put nothing in this directory.
4933 Vendors who distribute perl may wish to place their own
4934 man1 pages in this directory with
4935 MakeMaker Makefile.PL INSTALLDIRS=vendor
4936 or equivalent. See INSTALL for details.
4938 vendorman1direxp (vendorman1dir.U):
4939 This variable is the ~name expanded version of vendorman1dir, so that you
4940 may use it directly in Makefiles or shell scripts.
4942 vendorman3dir (vendorman3dir.U):
4943 This variable contains the name of the directory for man3
4944 pages. It may have a ~ on the front.
4945 The standard distribution will put nothing in this directory.
4946 Vendors who distribute perl may wish to place their own
4947 man3 pages in this directory with
4948 MakeMaker Makefile.PL INSTALLDIRS=vendor
4949 or equivalent. See INSTALL for details.
4951 vendorman3direxp (vendorman3dir.U):
4952 This variable is the ~name expanded version of vendorman3dir, so that you
4953 may use it directly in Makefiles or shell scripts.
4955 vendorprefix (vendorprefix.U):
4956 This variable holds the full absolute path of the directory below
4957 which the vendor will install add-on packages.
4958 See INSTALL for usage and examples.
4960 vendorprefixexp (vendorprefix.U):
4961 This variable holds the full absolute path of the directory below
4962 which the vendor will install add-on packages. Derived from vendorprefix.
4964 vendorscript (vendorscript.U):
4965 This variable contains the eventual value of the VENDORSCRIPT symbol.
4966 It may have a ~ on the front.
4967 The standard distribution will put nothing in this directory.
4968 Vendors who distribute perl may wish to place additional
4969 executable scripts in this directory with
4970 MakeMaker Makefile.PL INSTALLDIRS=vendor
4971 or equivalent. See INSTALL for details.
4973 vendorscriptexp (vendorscript.U):
4974 This variable is the ~name expanded version of vendorscript, so that you
4975 may use it directly in Makefiles or shell scripts.
4977 version (patchlevel.U):
4978 The full version number of this package, such as 5.6.1 (or 5_6_1).
4979 This combines revision, patchlevel, and subversion to get the
4980 full version number, including any possible subversions.
4981 This is suitable for use as a directory name, and hence is
4982 filesystem dependent.
4984 version_patchlevel_string (patchlevel.U):
4985 This is a string combining version, subversion and
4986 perl_patchlevel (if perl_patchlevel is non-zero).
4987 It is typically something like
4988 'version 7 subversion 1' or
4989 'version 7 subversion 1 patchlevel 11224'
4990 It is computed here to avoid duplication of code in myconfig.SH
4993 versiononly (versiononly.U):
4994 If set, this symbol indicates that only the version-specific
4995 components of a perl installation should be installed.
4996 This may be useful for making a test installation of a new
4997 version without disturbing the existing installation.
4998 Setting versiononly is equivalent to setting installperl's -v option.
4999 In particular, the non-versioned scripts and programs such as
5000 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5001 (see INSTALL for a more complete list). Nor are the man
5003 Usually, this is undef.
5006 This variable is defined but not used by Configure.
5007 The value is a plain '' and is not useful.
5009 voidflags (voidflags.U):
5010 This variable contains the eventual value of the VOIDFLAGS symbol,
5011 which indicates how much support of the void type is given by this
5012 compiler. See VOIDFLAGS for more info.
5015 This variable holds extra path (space-separated) used to find
5016 libraries on this platform, for example CPU-specific libraries
5017 (on multi-CPU platforms) may be listed here.
5020 This variable holds the name of the compiler compiler we
5021 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5024 This variable contains any additional yacc flags desired by the
5025 user. It is up to the Makefile to use this.
5028 This variable is defined but not used by Configure.
5029 The value is a plain '' and is not useful.
5032 This variable is used internally by Configure to determine the
5033 full pathname (if any) of the zip program. After Configure runs,
5034 the value is reset to a plain "zip" and is not useful.