2 !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
3 This file is built by metaconfig.
5 This file contains a description of all the shell variables whose value is
6 determined by the Configure script. Variables intended for use in C
7 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
8 generates pod documentation for Config.pm from this file--please try to keep
9 the formatting regular.]
12 This variable defines the extension used for ordinary library files.
13 For unix, it is '.a'. The '.' is included. Other possible
14 values include '.lib'.
17 This variable defines the extension used for executable files.
18 DJGPP, Cygwin and OS/2 use '.exe'. Stratus VOS uses '.pm'.
19 On operating systems which do not require a specific extension
20 for executable files, this variable is empty.
23 This variable defines the extension used for object files.
24 For unix, it is '.o'. The '.' is included. Other possible
25 values include '.obj'.
28 This variable is set to 'true' if AFS (Andrew File System) is used
29 on the system, 'false' otherwise. It is possible to override this
30 with a hint value or command line option, but you'd better know
34 This variable is by default set to '/afs'. In the unlikely case
35 this is not the correct root, it is possible to override this with
36 a hint value or command line option. This will be used in subsequent
37 tests for AFSness in the Perl configure and test process.
39 alignbytes (alignbytes.U):
40 This variable holds the number of bytes required to align a
41 double-- or a long double when applicable. Usual values are
42 2, 4 and 8. The default is eight, for safety.
44 ansi2knr (ansi2knr.U):
45 This variable is set if the user needs to run ansi2knr.
46 Currently, this is not supported, so we just abort.
48 aphostname (d_gethname.U):
49 This variable contains the command which can be used to compute the
50 host name. The command is fully qualified by its absolute path, to make
51 it safe when used by a process with super-user privileges.
53 api_revision (patchlevel.U):
54 The three variables, api_revision, api_version, and
55 api_subversion, specify the version of the oldest perl binary
56 compatible with the present perl. In a full version string
57 such as '5.6.1', api_revision is the '5'.
58 Prior to 5.5.640, the format was a floating point number,
61 perl.c:incpush() and lib/lib.pm will automatically search in
62 $sitelib/.. for older directories back to the limit specified
63 by these api_ variables. This is only useful if you have a
64 perl library directory tree structured like the default one.
65 See INSTALL for how this works. The versioned site_perl
66 directory was introduced in 5.005, so that is the lowest
67 possible value. The version list appropriate for the current
68 system is determined in inc_version_list.U.
70 XXX To do: Since compatibility can depend on compile time
71 options (such as bincompat, longlong, etc.) it should
72 (perhaps) be set by Configure, but currently it isn't.
73 Currently, we read a hard-wired value from patchlevel.h.
74 Perhaps what we ought to do is take the hard-wired value from
75 patchlevel.h but then modify it if the current Configure
76 options warrant. patchlevel.h then would use an #ifdef guard.
78 api_subversion (patchlevel.U):
79 The three variables, api_revision, api_version, and
80 api_subversion, specify the version of the oldest perl binary
81 compatible with the present perl. In a full version string
82 such as '5.6.1', api_subversion is the '1'. See api_revision for
85 api_version (patchlevel.U):
86 The three variables, api_revision, api_version, and
87 api_subversion, specify the version of the oldest perl binary
88 compatible with the present perl. In a full version string
89 such as '5.6.1', api_version is the '6'. See api_revision for
90 full details. As a special case, 5.5.0 is rendered in the
91 old-style as 5.005. (In the 5.005_0x maintenance series,
92 this was the only versioned directory in $sitelib.)
94 api_versionstring (patchlevel.U):
95 This variable combines api_revision, api_version, and
96 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
97 for use as a directory name. This is filesystem dependent.
100 This variable is used internally by Configure to determine the
101 full pathname (if any) of the ar program. After Configure runs,
102 the value is reset to a plain "ar" and is not useful.
105 This variable holds the name of the directory in which the user wants
106 to put architecture-dependent public library files for $package.
107 It is most often a local directory such as /usr/local/lib.
108 Programs using this variable must be prepared to deal
109 with filename expansion.
111 archlibexp (archlib.U):
112 This variable is the same as the archlib variable, but is
113 filename expanded at configuration time, for convenient use.
115 archname (archname.U):
116 This variable is a short name to characterize the current
117 architecture. It is used mainly to construct the default archlib.
119 archname64 (use64bits.U):
120 This variable is used for the 64-bitness part of $archname.
123 This variable defines any additional objects that must be linked
124 in with the program on this architecture. On unix, it is usually
125 empty. It is typically used to include emulations of unix calls
126 or other facilities. For perl on OS/2, for example, this would
129 asctime_r_proto (d_asctime_r.U):
130 This variable encodes the prototype of asctime_r.
131 It is zero if d_asctime_r is undef, and one of the
132 REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
136 This variable is used internally by Configure to determine the
137 full pathname (if any) of the awk program. After Configure runs,
138 the value is reset to a plain "awk" and is not useful.
141 The base revision level of this package, from the .package file.
144 This variable is defined but not used by Configure.
145 The value is a plain '' and is not useful.
148 This variable holds the name of the directory in which the user wants
149 to put publicly executable images for the package in question. It
150 is most often a local directory such as /usr/local/bin. Programs using
151 this variable must be prepared to deal with ~name substitution.
154 This is the same as the bin variable, but is filename expanded at
155 configuration time, for use in your makefiles.
158 This variable is used internally by Configure to determine the
159 full pathname (if any) of the bison program. After Configure runs,
160 the value is reset to a plain "bison" and is not useful.
163 This variable is used internally by Configure to determine the
164 full pathname (if any) of the byacc program. After Configure runs,
165 the value is reset to a plain "byacc" and is not useful.
167 byteorder (byteorder.U):
168 This variable holds the byte order in a UV. In the following,
169 larger digits indicate more significance. The variable byteorder
170 is either 4321 on a big-endian machine, or 1234 on a little-endian,
171 or 87654321 on a Cray ... or 3412 with weird order !
174 This variable contains the \c string if that is what causes the echo
175 command to suppress newline. Otherwise it is null. Correct usage is
176 $echo $n "prompt for a question: $c".
178 castflags (d_castneg.U):
179 This variable contains a flag that precise difficulties the
180 compiler has casting odd floating values to unsigned long:
182 1 = couldn't cast < 0
183 2 = couldn't cast >= 0x80000000
184 4 = couldn't cast in argument expression list
187 This variable is used internally by Configure to determine the
188 full pathname (if any) of the cat program. After Configure runs,
189 the value is reset to a plain "cat" and is not useful.
192 This variable holds the name of a command to execute a C compiler which
193 can resolve multiple global references that happen to have the same
194 name. Usual values are 'cc' and 'gcc'.
195 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
197 cccdlflags (dlsrc.U):
198 This variable contains any special flags that might need to be
199 passed with 'cc -c' to compile modules to be used to create a shared
200 library that will be used for dynamic loading. For hpux, this
201 should be +z. It is up to the makefile to use it.
204 This variable contains any special flags that might need to be
205 passed to cc to link with a shared library for dynamic loading.
206 It is up to the makefile to use it. For sunos 4.1, it should
210 This variable contains any additional C compiler flags desired by
211 the user. It is up to the Makefile to use this.
213 ccflags_uselargefiles (uselfs.U):
214 This variable contains the compiler flags needed by large file builds
215 and added to ccflags by hints files.
218 This can set either by hints files or by Configure. If using
219 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
220 Some platforms, however, make good use of this by storing the
221 flavor of the C compiler being used here. For example if using
222 the Sun WorkShop suite, ccname will be 'workshop'.
224 ccsymbols (Cppsym.U):
225 The variable contains the symbols defined by the C compiler alone.
226 The symbols defined by cpp or by cc when it calls cpp are not in
227 this list, see cppsymbols and cppccsymbols.
228 The list is a space-separated list of symbol=value tokens.
230 ccversion (Checkcc.U):
231 This can set either by hints files or by Configure. If using
232 a (non-gcc) vendor cc, this variable may contain a version for
236 Login name of the person who ran the Configure script and answered the
237 questions. This is used to tag both config.sh and config_h.SH.
239 cf_email (cf_email.U):
240 Electronic mail address of the person who ran Configure. This can be
241 used by units that require the user's e-mail, like MailList.U.
244 Holds the output of the "date" command when the configuration file was
245 produced. This is used to tag both config.sh and config_h.SH.
247 charsize (charsize.U):
248 This variable contains the value of the CHARSIZE symbol, which
249 indicates to the C program how many bytes there are in a character.
252 This variable is defined but not used by Configure.
253 The value is a plain '' and is not useful.
256 This variable is used internally by Configure to determine the
257 full pathname (if any) of the chmod program. After Configure runs,
258 the value is reset to a plain "chmod" and is not useful.
261 This variable is defined but not used by Configure.
262 The value is a plain '' and is not useful.
264 clocktype (d_times.U):
265 This variable holds the type returned by times(). It can be long,
266 or clock_t on BSD sites (in which case <sys/types.h> should be
270 This variable is used internally by Configure to determine the
271 full pathname (if any) of the comm program. After Configure runs,
272 the value is reset to a plain "comm" and is not useful.
275 This variable is defined but not used by Configure.
276 The value is a plain '' and is not useful.
278 contains (contains.U):
279 This variable holds the command to do a grep with a proper return
280 status. On most sane systems it is simply "grep". On insane systems
281 it is a grep followed by a cat followed by a test. This variable
282 is primarily for the use of other Configure units.
285 This variable is used internally by Configure to determine the
286 full pathname (if any) of the cp program. After Configure runs,
287 the value is reset to a plain "cp" and is not useful.
290 This variable is defined but not used by Configure.
291 The value is a plain '' and is not useful.
294 This variable is used internally by Configure to determine the
295 full pathname (if any) of the cpp program. After Configure runs,
296 the value is reset to a plain "cpp" and is not useful.
298 cpp_stuff (cpp_stuff.U):
299 This variable contains an identification of the concatenation mechanism
300 used by the C preprocessor.
302 cppccsymbols (Cppsym.U):
303 The variable contains the symbols defined by the C compiler
304 when it calls cpp. The symbols defined by the cc alone or cpp
305 alone are not in this list, see ccsymbols and cppsymbols.
306 The list is a space-separated list of symbol=value tokens.
308 cppflags (ccflags.U):
309 This variable holds the flags that will be passed to the C pre-
310 processor. It is up to the Makefile to use it.
312 cpplast (cppstdin.U):
313 This variable has the same functionality as cppminus, only it applies
314 to cpprun and not cppstdin.
316 cppminus (cppstdin.U):
317 This variable contains the second part of the string which will invoke
318 the C preprocessor on the standard input and produce to standard
319 output. This variable will have the value "-" if cppstdin needs
320 a minus to specify standard input, otherwise the value is "".
323 This variable contains the command which will invoke a C preprocessor
324 on standard input and put the output to stdout. It is guaranteed not
325 to be a wrapper and may be a null string if no preprocessor can be
326 made directly available. This preprocessor might be different from the
327 one used by the C compiler. Don't forget to append cpplast after the
328 preprocessor options.
330 cppstdin (cppstdin.U):
331 This variable contains the command which will invoke the C
332 preprocessor on standard input and put the output to stdout.
333 It is primarily used by other Configure units that ask about
334 preprocessor symbols.
336 cppsymbols (Cppsym.U):
337 The variable contains the symbols defined by the C preprocessor
338 alone. The symbols defined by cc or by cc when it calls cpp are
339 not in this list, see ccsymbols and cppccsymbols.
340 The list is a space-separated list of symbol=value tokens.
342 crypt_r_proto (d_crypt_r.U):
343 This variable encodes the prototype of crypt_r.
344 It is zero if d_crypt_r is undef, and one of the
345 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
348 cryptlib (d_crypt.U):
349 This variable holds -lcrypt or the path to a libcrypt.a archive if
350 the crypt() function is not defined in the standard C library. It is
351 up to the Makefile to use this.
354 This variable is used internally by Configure to determine the
355 full pathname (if any) of the csh program. After Configure runs,
356 the value is reset to a plain "csh" and is not useful.
358 ctermid_r_proto (d_ctermid_r.U):
359 This variable encodes the prototype of ctermid_r.
360 It is zero if d_ctermid_r is undef, and one of the
361 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
364 ctime_r_proto (d_ctime_r.U):
365 This variable encodes the prototype of ctime_r.
366 It is zero if d_ctime_r is undef, and one of the
367 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
370 d__fwalk (d__fwalk.U):
371 This variable conditionally defines HAS__FWALK if _fwalk() is
372 available to apply a function to all the file handles.
374 d_access (d_access.U):
375 This variable conditionally defines HAS_ACCESS if the access() system
376 call is available to check for access permissions using real IDs.
378 d_accessx (d_accessx.U):
379 This variable conditionally defines the HAS_ACCESSX symbol, which
380 indicates to the C program that the accessx() routine is available.
383 This variable conditionally defines the HAS_AINTL symbol, which
384 indicates to the C program that the aintl() routine is available.
385 If copysignl is also present we can emulate modfl.
388 This variable conditionally defines the HAS_ALARM symbol, which
389 indicates to the C program that the alarm() routine is available.
391 d_archlib (archlib.U):
392 This variable conditionally defines ARCHLIB to hold the pathname
393 of architecture-dependent library files for $package. If
394 $archlib is the same as $privlib, then this is set to undef.
396 d_asctime_r (d_asctime_r.U):
397 This variable conditionally defines the HAS_ASCTIME_R symbol,
398 which indicates to the C program that the asctime_r()
399 routine is available.
402 This variable conditionally defines the HAS_ATOLF symbol, which
403 indicates to the C program that the atolf() routine is available.
406 This variable conditionally defines the HAS_ATOLL symbol, which
407 indicates to the C program that the atoll() routine is available.
409 d_attribute_format (d_attribut.U):
410 This variable conditionally defines HASATTRIBUTE_FORMAT, which
411 indicates the C compiler can check for printf-like formats.
413 d_attribute_malloc (d_attribut.U):
414 This variable conditionally defines HASATTRIBUTE_MALLOC, which
415 indicates the C compiler can understand functions as having
416 malloc-like semantics.
418 d_attribute_nonnull (d_attribut.U):
419 This variable conditionally defines HASATTRIBUTE_NONNULL, which
420 indicates that the C compiler can know that certain arguments
421 must not be NULL, and will check accordingly at compile time.
423 d_attribute_noreturn (d_attribut.U):
424 This variable conditionally defines HASATTRIBUTE_NORETURN, which
425 indicates that the C compiler can know that certain functions
426 are guaranteed never to return.
428 d_attribute_pure (d_attribut.U):
429 This variable conditionally defines HASATTRIBUTE_PURE, which
430 indicates that the C compiler can know that certain functions
431 are "pure" functions, meaning that they have no side effects, and
432 only rely on function input and/or global data for their results.
434 d_attribute_unused (d_attribut.U):
435 This variable conditionally defines HASATTRIBUTE_UNUSED, which
436 indicates that the C compiler can know that certain variables
437 and arguments may not always be used, and to not throw warnings
438 if they don't get used.
440 d_attribute_warn_unused_result (d_attribut.U):
441 This variable conditionally defines
442 HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
443 compiler can know that certain functions have a return values
444 that must not be ignored, such as malloc() or open().
447 This variable conditionally defines the HAS_BCMP symbol if
448 the bcmp() routine is available to compare strings.
451 This variable conditionally defines the HAS_BCOPY symbol if
452 the bcopy() routine is available to copy strings.
455 This symbol conditionally defines the symbol BSD when running on a
458 d_bsdgetpgrp (d_getpgrp.U):
459 This variable conditionally defines USE_BSD_GETPGRP if
460 getpgrp needs one arguments whereas USG one needs none.
462 d_bsdsetpgrp (d_setpgrp.U):
463 This variable conditionally defines USE_BSD_SETPGRP if
464 setpgrp needs two arguments whereas USG one needs none.
465 See also d_setpgid for a POSIX interface.
467 d_builtin_choose_expr (d_builtin.U):
468 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
469 indicates that the compiler supports __builtin_choose_expr(x,y,z).
470 This built-in function is analogous to the "x?y:z" operator in C,
471 except that the expression returned has its type unaltered by
472 promotion rules. Also, the built-in function does not evaluate
473 the expression that was not chosen.
475 d_builtin_expect (d_builtin.U):
476 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
477 that the compiler supports __builtin_expect(exp,c). You may use
478 __builtin_expect to provide the compiler with branch prediction
482 This variable conditionally defines the HAS_BZERO symbol if
483 the bzero() routine is available to set memory to 0.
485 d_c99_variadic_macros (d_c99_variadic.U):
486 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
487 symbol, which indicates to the C program that C99 variadic macros
490 d_casti32 (d_casti32.U):
491 This variable conditionally defines CASTI32, which indicates
492 whether the C compiler can cast large floats to 32-bit ints.
494 d_castneg (d_castneg.U):
495 This variable conditionally defines CASTNEG, which indicates
496 wether the C compiler can cast negative float to unsigned.
498 d_charvspr (d_vprintf.U):
499 This variable conditionally defines CHARVSPRINTF if this system
500 has vsprintf returning type (char*). The trend seems to be to
501 declare it as "int vsprintf()".
504 This variable conditionally defines the HAS_CHOWN symbol, which
505 indicates to the C program that the chown() routine is available.
507 d_chroot (d_chroot.U):
508 This variable conditionally defines the HAS_CHROOT symbol, which
509 indicates to the C program that the chroot() routine is available.
511 d_chsize (d_chsize.U):
512 This variable conditionally defines the CHSIZE symbol, which
513 indicates to the C program that the chsize() routine is available
514 to truncate files. You might need a -lx to get this routine.
517 This variable conditionally defines the HAS_CLASS symbol, which
518 indicates to the C program that the class() routine is available.
520 d_clearenv (d_clearenv.U):
521 This variable conditionally defines the HAS_CLEARENV symbol, which
522 indicates to the C program that the clearenv () routine is available.
524 d_closedir (d_closedir.U):
525 This variable conditionally defines HAS_CLOSEDIR if closedir() is
528 d_cmsghdr_s (d_cmsghdr_s.U):
529 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
530 which indicates that the struct cmsghdr is supported.
533 This variable conditionally defines the HASCONST symbol, which
534 indicates to the C program that this C compiler knows about the
537 d_copysignl (d_copysignl.U):
538 This variable conditionally defines the HAS_COPYSIGNL symbol, which
539 indicates to the C program that the copysignl() routine is available.
540 If aintl is also present we can emulate modfl.
542 d_cplusplus (d_cplusplus.U):
543 This variable conditionally defines the USE_CPLUSPLUS symbol, which
544 indicates that a C++ compiler was used to compiled Perl and will be
545 used to compile extensions.
548 This variable conditionally defines the CRYPT symbol, which
549 indicates to the C program that the crypt() routine is available
550 to encrypt passwords and the like.
552 d_crypt_r (d_crypt_r.U):
553 This variable conditionally defines the HAS_CRYPT_R symbol,
554 which indicates to the C program that the crypt_r()
555 routine is available.
558 This variable conditionally defines the CSH symbol, which
559 indicates to the C program that the C-shell exists.
561 d_ctermid (d_ctermid.U):
562 This variable conditionally defines CTERMID if ctermid() is
563 available to generate filename for terminal.
565 d_ctermid_r (d_ctermid_r.U):
566 This variable conditionally defines the HAS_CTERMID_R symbol,
567 which indicates to the C program that the ctermid_r()
568 routine is available.
570 d_ctime_r (d_ctime_r.U):
571 This variable conditionally defines the HAS_CTIME_R symbol,
572 which indicates to the C program that the ctime_r()
573 routine is available.
575 d_cuserid (d_cuserid.U):
576 This variable conditionally defines the HAS_CUSERID symbol, which
577 indicates to the C program that the cuserid() routine is available
578 to get character login names.
580 d_dbl_dig (d_dbl_dig.U):
581 This variable conditionally defines d_dbl_dig if this system's
582 header files provide DBL_DIG, which is the number of significant
583 digits in a double precision number.
585 d_dbminitproto (d_dbminitproto.U):
586 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
587 which indicates to the C program that the system provides
588 a prototype for the dbminit() function. Otherwise, it is
589 up to the program to supply one.
591 d_difftime (d_difftime.U):
592 This variable conditionally defines the HAS_DIFFTIME symbol, which
593 indicates to the C program that the difftime() routine is available.
595 d_dir_dd_fd (d_dir_dd_fd.U):
596 This variable conditionally defines the HAS_DIR_DD_FD symbol, which
597 indicates that the DIR directory stream type contains a member
598 variable called dd_fd.
601 This variable conditionally defines the HAS_DIRFD constant,
602 which indicates to the C program that dirfd() is available
603 to return the file descriptor of a directory stream.
605 d_dirnamlen (i_dirent.U):
606 This variable conditionally defines DIRNAMLEN, which indicates
607 to the C program that the length of directory entry names is
608 provided by a d_namelen field.
610 d_dlerror (d_dlerror.U):
611 This variable conditionally defines the HAS_DLERROR symbol, which
612 indicates to the C program that the dlerror() routine is available.
614 d_dlopen (d_dlopen.U):
615 This variable conditionally defines the HAS_DLOPEN symbol, which
616 indicates to the C program that the dlopen() routine is available.
618 d_dlsymun (d_dlsymun.U):
619 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
620 indicates that we need to prepend an underscore to the symbol
621 name before calling dlsym().
623 d_dosuid (d_dosuid.U):
624 This variable conditionally defines the symbol DOSUID, which
625 tells the C program that it should insert setuid emulation code
626 on hosts which have setuid #! scripts disabled.
628 d_drand48_r (d_drand48_r.U):
629 This variable conditionally defines the HAS_DRAND48_R symbol,
630 which indicates to the C program that the drand48_r()
631 routine is available.
633 d_drand48proto (d_drand48proto.U):
634 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
635 which indicates to the C program that the system provides
636 a prototype for the drand48() function. Otherwise, it is
637 up to the program to supply one.
640 This variable conditionally defines HAS_DUP2 if dup2() is
641 available to duplicate file descriptors.
643 d_eaccess (d_eaccess.U):
644 This variable conditionally defines the HAS_EACCESS symbol, which
645 indicates to the C program that the eaccess() routine is available.
647 d_endgrent (d_endgrent.U):
648 This variable conditionally defines the HAS_ENDGRENT symbol, which
649 indicates to the C program that the endgrent() routine is available
650 for sequential access of the group database.
652 d_endgrent_r (d_endgrent_r.U):
653 This variable conditionally defines the HAS_ENDGRENT_R symbol,
654 which indicates to the C program that the endgrent_r()
655 routine is available.
657 d_endhent (d_endhent.U):
658 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
659 available to close whatever was being used for host queries.
661 d_endhostent_r (d_endhostent_r.U):
662 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
663 which indicates to the C program that the endhostent_r()
664 routine is available.
666 d_endnent (d_endnent.U):
667 This variable conditionally defines HAS_ENDNETENT if endnetent() is
668 available to close whatever was being used for network queries.
670 d_endnetent_r (d_endnetent_r.U):
671 This variable conditionally defines the HAS_ENDNETENT_R symbol,
672 which indicates to the C program that the endnetent_r()
673 routine is available.
675 d_endpent (d_endpent.U):
676 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
677 available to close whatever was being used for protocol queries.
679 d_endprotoent_r (d_endprotoent_r.U):
680 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
681 which indicates to the C program that the endprotoent_r()
682 routine is available.
684 d_endpwent (d_endpwent.U):
685 This variable conditionally defines the HAS_ENDPWENT symbol, which
686 indicates to the C program that the endpwent() routine is available
687 for sequential access of the passwd database.
689 d_endpwent_r (d_endpwent_r.U):
690 This variable conditionally defines the HAS_ENDPWENT_R symbol,
691 which indicates to the C program that the endpwent_r()
692 routine is available.
694 d_endsent (d_endsent.U):
695 This variable conditionally defines HAS_ENDSERVENT if endservent() is
696 available to close whatever was being used for service queries.
698 d_endservent_r (d_endservent_r.U):
699 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
700 which indicates to the C program that the endservent_r()
701 routine is available.
703 d_eofnblk (nblock_io.U):
704 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
705 when reading from a non-blocking I/O source.
708 This variable conditionally defines the symbols EUNICE and VAX, which
709 alerts the C program that it must deal with ideosyncracies of VMS.
711 d_faststdio (d_faststdio.U):
712 This variable conditionally defines the HAS_FAST_STDIO symbol,
713 which indicates to the C program that the "fast stdio" is available
714 to manipulate the stdio buffers directly.
716 d_fchdir (d_fchdir.U):
717 This variable conditionally defines the HAS_FCHDIR symbol, which
718 indicates to the C program that the fchdir() routine is available.
720 d_fchmod (d_fchmod.U):
721 This variable conditionally defines the HAS_FCHMOD symbol, which
722 indicates to the C program that the fchmod() routine is available
723 to change mode of opened files.
725 d_fchown (d_fchown.U):
726 This variable conditionally defines the HAS_FCHOWN symbol, which
727 indicates to the C program that the fchown() routine is available
728 to change ownership of opened files.
731 This variable conditionally defines the HAS_FCNTL symbol, and indicates
732 whether the fcntl() function exists
734 d_fcntl_can_lock (d_fcntl_can_lock.U):
735 This variable conditionally defines the FCNTL_CAN_LOCK symbol
736 and indicates whether file locking with fcntl() works.
738 d_fd_macros (d_fd_set.U):
739 This variable contains the eventual value of the HAS_FD_MACROS symbol,
740 which indicates if your C compiler knows about the macros which
741 manipulate an fd_set.
743 d_fd_set (d_fd_set.U):
744 This variable contains the eventual value of the HAS_FD_SET symbol,
745 which indicates if your C compiler knows about the fd_set typedef.
747 d_fds_bits (d_fd_set.U):
748 This variable contains the eventual value of the HAS_FDS_BITS symbol,
749 which indicates if your fd_set typedef contains the fds_bits member.
750 If you have an fd_set typedef, but the dweebs who installed it did
751 a half-fast job and neglected to provide the macros to manipulate
752 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
754 d_fgetpos (d_fgetpos.U):
755 This variable conditionally defines HAS_FGETPOS if fgetpos() is
756 available to get the file position indicator.
758 d_finite (d_finite.U):
759 This variable conditionally defines the HAS_FINITE symbol, which
760 indicates to the C program that the finite() routine is available.
762 d_finitel (d_finitel.U):
763 This variable conditionally defines the HAS_FINITEL symbol, which
764 indicates to the C program that the finitel() routine is available.
766 d_flexfnam (d_flexfnam.U):
767 This variable conditionally defines the FLEXFILENAMES symbol, which
768 indicates that the system supports filenames longer than 14 characters.
771 This variable conditionally defines HAS_FLOCK if flock() is
772 available to do file locking.
774 d_flockproto (d_flockproto.U):
775 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
776 which indicates to the C program that the system provides
777 a prototype for the flock() function. Otherwise, it is
778 up to the program to supply one.
781 This variable conditionally defines the HAS_FORK symbol, which
782 indicates to the C program that the fork() routine is available.
784 d_fp_class (d_fp_class.U):
785 This variable conditionally defines the HAS_FP_CLASS symbol, which
786 indicates to the C program that the fp_class() routine is available.
788 d_fpathconf (d_pathconf.U):
789 This variable conditionally defines the HAS_FPATHCONF symbol, which
790 indicates to the C program that the pathconf() routine is available
791 to determine file-system related limits and options associated
792 with a given open file descriptor.
794 d_fpclass (d_fpclass.U):
795 This variable conditionally defines the HAS_FPCLASS symbol, which
796 indicates to the C program that the fpclass() routine is available.
798 d_fpclassify (d_fpclassify.U):
799 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
800 indicates to the C program that the fpclassify() routine is available.
802 d_fpclassl (d_fpclassl.U):
803 This variable conditionally defines the HAS_FPCLASSL symbol, which
804 indicates to the C program that the fpclassl() routine is available.
806 d_fpos64_t (d_fpos64_t.U):
807 This symbol will be defined if the C compiler supports fpos64_t.
809 d_frexpl (d_frexpl.U):
810 This variable conditionally defines the HAS_FREXPL symbol, which
811 indicates to the C program that the frexpl() routine is available.
813 d_fs_data_s (d_fs_data_s.U):
814 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
815 which indicates that the struct fs_data is supported.
817 d_fseeko (d_fseeko.U):
818 This variable conditionally defines the HAS_FSEEKO symbol, which
819 indicates to the C program that the fseeko() routine is available.
821 d_fsetpos (d_fsetpos.U):
822 This variable conditionally defines HAS_FSETPOS if fsetpos() is
823 available to set the file position indicator.
825 d_fstatfs (d_fstatfs.U):
826 This variable conditionally defines the HAS_FSTATFS symbol, which
827 indicates to the C program that the fstatfs() routine is available.
829 d_fstatvfs (d_statvfs.U):
830 This variable conditionally defines the HAS_FSTATVFS symbol, which
831 indicates to the C program that the fstatvfs() routine is available.
834 This variable conditionally defines the HAS_FSYNC symbol, which
835 indicates to the C program that the fsync() routine is available.
837 d_ftello (d_ftello.U):
838 This variable conditionally defines the HAS_FTELLO symbol, which
839 indicates to the C program that the ftello() routine is available.
842 This variable conditionally defines the HAS_FTIME symbol, which indicates
843 that the ftime() routine exists. The ftime() routine is basically
844 a sub-second accuracy clock.
846 d_futimes (d_futimes.U):
847 This variable conditionally defines the HAS_FUTIMES symbol, which
848 indicates to the C program that the futimes() routine is available.
850 d_Gconvert (d_gconvert.U):
851 This variable holds what Gconvert is defined as to convert
852 floating point numbers into strings. By default, Configure
853 sets this macro to use the first of gconvert, gcvt, or sprintf
854 that pass sprintf-%g-like behaviour tests. If perl is using
855 long doubles, the macro uses the first of the following
856 functions that pass Configure's tests: qgcvt, sprintf (if
857 Configure knows how to make sprintf format long doubles--see
858 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
859 The gconvert_preference and gconvert_ld_preference variables
860 can be used to alter Configure's preferences, for doubles and
861 long doubles, respectively. If present, they contain a
862 space-separated list of one or more of the above function
863 names in the order they should be tried.
865 d_Gconvert may be set to override Configure with a platform-
866 specific function. If this function expects a double, a
867 different value may need to be set by the uselongdouble.cbu
868 call-back unit so that long doubles can be formatted without
871 d_getcwd (d_getcwd.U):
872 This variable conditionally defines the HAS_GETCWD symbol, which
873 indicates to the C program that the getcwd() routine is available
874 to get the current working directory.
876 d_getespwnam (d_getespwnam.U):
877 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
878 available to retrieve enchanced (shadow) password entries by name.
880 d_getfsstat (d_getfsstat.U):
881 This variable conditionally defines the HAS_GETFSSTAT symbol, which
882 indicates to the C program that the getfsstat() routine is available.
884 d_getgrent (d_getgrent.U):
885 This variable conditionally defines the HAS_GETGRENT symbol, which
886 indicates to the C program that the getgrent() routine is available
887 for sequential access of the group database.
889 d_getgrent_r (d_getgrent_r.U):
890 This variable conditionally defines the HAS_GETGRENT_R symbol,
891 which indicates to the C program that the getgrent_r()
892 routine is available.
894 d_getgrgid_r (d_getgrgid_r.U):
895 This variable conditionally defines the HAS_GETGRGID_R symbol,
896 which indicates to the C program that the getgrgid_r()
897 routine is available.
899 d_getgrnam_r (d_getgrnam_r.U):
900 This variable conditionally defines the HAS_GETGRNAM_R symbol,
901 which indicates to the C program that the getgrnam_r()
902 routine is available.
904 d_getgrps (d_getgrps.U):
905 This variable conditionally defines the HAS_GETGROUPS symbol, which
906 indicates to the C program that the getgroups() routine is available
907 to get the list of process groups.
909 d_gethbyaddr (d_gethbyad.U):
910 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
911 indicates to the C program that the gethostbyaddr() routine is available
912 to look up hosts by their IP addresses.
914 d_gethbyname (d_gethbynm.U):
915 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
916 indicates to the C program that the gethostbyname() routine is available
917 to look up host names in some data base or other.
919 d_gethent (d_gethent.U):
920 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
921 available to look up host names in some data base or another.
923 d_gethname (d_gethname.U):
924 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
925 indicates to the C program that the gethostname() routine may be
926 used to derive the host name.
928 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
929 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
930 which indicates to the C program that the gethostbyaddr_r()
931 routine is available.
933 d_gethostbyname_r (d_gethostbyname_r.U):
934 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
935 which indicates to the C program that the gethostbyname_r()
936 routine is available.
938 d_gethostent_r (d_gethostent_r.U):
939 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
940 which indicates to the C program that the gethostent_r()
941 routine is available.
943 d_gethostprotos (d_gethostprotos.U):
944 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
945 which indicates to the C program that <netdb.h> supplies
946 prototypes for the various gethost*() functions.
947 See also netdbtype.U for probing for various netdb types.
949 d_getitimer (d_getitimer.U):
950 This variable conditionally defines the HAS_GETITIMER symbol, which
951 indicates to the C program that the getitimer() routine is available.
953 d_getlogin (d_getlogin.U):
954 This variable conditionally defines the HAS_GETLOGIN symbol, which
955 indicates to the C program that the getlogin() routine is available
956 to get the login name.
958 d_getlogin_r (d_getlogin_r.U):
959 This variable conditionally defines the HAS_GETLOGIN_R symbol,
960 which indicates to the C program that the getlogin_r()
961 routine is available.
963 d_getmnt (d_getmnt.U):
964 This variable conditionally defines the HAS_GETMNT symbol, which
965 indicates to the C program that the getmnt() routine is available
966 to retrieve one or more mount info blocks by filename.
968 d_getmntent (d_getmntent.U):
969 This variable conditionally defines the HAS_GETMNTENT symbol, which
970 indicates to the C program that the getmntent() routine is available
971 to iterate through mounted files to get their mount info.
973 d_getnbyaddr (d_getnbyad.U):
974 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
975 indicates to the C program that the getnetbyaddr() routine is available
976 to look up networks by their IP addresses.
978 d_getnbyname (d_getnbynm.U):
979 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
980 indicates to the C program that the getnetbyname() routine is available
981 to look up networks by their names.
983 d_getnent (d_getnent.U):
984 This variable conditionally defines HAS_GETNETENT if getnetent() is
985 available to look up network names in some data base or another.
987 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
988 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
989 which indicates to the C program that the getnetbyaddr_r()
990 routine is available.
992 d_getnetbyname_r (d_getnetbyname_r.U):
993 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
994 which indicates to the C program that the getnetbyname_r()
995 routine is available.
997 d_getnetent_r (d_getnetent_r.U):
998 This variable conditionally defines the HAS_GETNETENT_R symbol,
999 which indicates to the C program that the getnetent_r()
1000 routine is available.
1002 d_getnetprotos (d_getnetprotos.U):
1003 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1004 which indicates to the C program that <netdb.h> supplies
1005 prototypes for the various getnet*() functions.
1006 See also netdbtype.U for probing for various netdb types.
1008 d_getpagsz (d_getpagsz.U):
1009 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1010 is available to get the system page size.
1012 d_getpbyname (d_getprotby.U):
1013 This variable conditionally defines the HAS_GETPROTOBYNAME
1014 symbol, which indicates to the C program that the
1015 getprotobyname() routine is available to look up protocols
1018 d_getpbynumber (d_getprotby.U):
1019 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1020 symbol, which indicates to the C program that the
1021 getprotobynumber() routine is available to look up protocols
1024 d_getpent (d_getpent.U):
1025 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1026 available to look up protocols in some data base or another.
1028 d_getpgid (d_getpgid.U):
1029 This variable conditionally defines the HAS_GETPGID symbol, which
1030 indicates to the C program that the getpgid(pid) function
1031 is available to get the process group id.
1033 d_getpgrp (d_getpgrp.U):
1034 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1035 available to get the current process group.
1037 d_getpgrp2 (d_getpgrp2.U):
1038 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1039 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1040 is available to get the current process group.
1042 d_getppid (d_getppid.U):
1043 This variable conditionally defines the HAS_GETPPID symbol, which
1044 indicates to the C program that the getppid() routine is available
1045 to get the parent process ID.
1047 d_getprior (d_getprior.U):
1048 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1049 is available to get a process's priority.
1051 d_getprotobyname_r (d_getprotobyname_r.U):
1052 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1053 which indicates to the C program that the getprotobyname_r()
1054 routine is available.
1056 d_getprotobynumber_r (d_getprotobynumber_r.U):
1057 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1058 which indicates to the C program that the getprotobynumber_r()
1059 routine is available.
1061 d_getprotoent_r (d_getprotoent_r.U):
1062 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1063 which indicates to the C program that the getprotoent_r()
1064 routine is available.
1066 d_getprotoprotos (d_getprotoprotos.U):
1067 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1068 which indicates to the C program that <netdb.h> supplies
1069 prototypes for the various getproto*() functions.
1070 See also netdbtype.U for probing for various netdb types.
1072 d_getprpwnam (d_getprpwnam.U):
1073 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1074 available to retrieve protected (shadow) password entries by name.
1076 d_getpwent (d_getpwent.U):
1077 This variable conditionally defines the HAS_GETPWENT symbol, which
1078 indicates to the C program that the getpwent() routine is available
1079 for sequential access of the passwd database.
1081 d_getpwent_r (d_getpwent_r.U):
1082 This variable conditionally defines the HAS_GETPWENT_R symbol,
1083 which indicates to the C program that the getpwent_r()
1084 routine is available.
1086 d_getpwnam_r (d_getpwnam_r.U):
1087 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1088 which indicates to the C program that the getpwnam_r()
1089 routine is available.
1091 d_getpwuid_r (d_getpwuid_r.U):
1092 This variable conditionally defines the HAS_GETPWUID_R symbol,
1093 which indicates to the C program that the getpwuid_r()
1094 routine is available.
1096 d_getsbyname (d_getsrvby.U):
1097 This variable conditionally defines the HAS_GETSERVBYNAME
1098 symbol, which indicates to the C program that the
1099 getservbyname() routine is available to look up services
1102 d_getsbyport (d_getsrvby.U):
1103 This variable conditionally defines the HAS_GETSERVBYPORT
1104 symbol, which indicates to the C program that the
1105 getservbyport() routine is available to look up services
1108 d_getsent (d_getsent.U):
1109 This variable conditionally defines HAS_GETSERVENT if getservent() is
1110 available to look up network services in some data base or another.
1112 d_getservbyname_r (d_getservbyname_r.U):
1113 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1114 which indicates to the C program that the getservbyname_r()
1115 routine is available.
1117 d_getservbyport_r (d_getservbyport_r.U):
1118 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1119 which indicates to the C program that the getservbyport_r()
1120 routine is available.
1122 d_getservent_r (d_getservent_r.U):
1123 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1124 which indicates to the C program that the getservent_r()
1125 routine is available.
1127 d_getservprotos (d_getservprotos.U):
1128 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1129 which indicates to the C program that <netdb.h> supplies
1130 prototypes for the various getserv*() functions.
1131 See also netdbtype.U for probing for various netdb types.
1133 d_getspnam (d_getspnam.U):
1134 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1135 available to retrieve SysV shadow password entries by name.
1137 d_getspnam_r (d_getspnam_r.U):
1138 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1139 which indicates to the C program that the getspnam_r()
1140 routine is available.
1142 d_gettimeod (d_ftime.U):
1143 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1144 indicates that the gettimeofday() system call exists (to obtain a
1145 sub-second accuracy clock). You should probably include <sys/resource.h>.
1147 d_gmtime_r (d_gmtime_r.U):
1148 This variable conditionally defines the HAS_GMTIME_R symbol,
1149 which indicates to the C program that the gmtime_r()
1150 routine is available.
1152 d_gnulibc (d_gnulibc.U):
1153 Defined if we're dealing with the GNU C Library.
1155 d_grpasswd (i_grp.U):
1156 This variable conditionally defines GRPASSWD, which indicates
1157 that struct group in <grp.h> contains gr_passwd.
1159 d_hasmntopt (d_hasmntopt.U):
1160 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1161 indicates to the C program that the hasmntopt() routine is available
1162 to query the mount options of file systems.
1164 d_htonl (d_htonl.U):
1165 This variable conditionally defines HAS_HTONL if htonl() and its
1166 friends are available to do network order byte swapping.
1168 d_ilogbl (d_ilogbl.U):
1169 This variable conditionally defines the HAS_ILOGBL symbol, which
1170 indicates to the C program that the ilogbl() routine is available.
1171 If scalbnl is also present we can emulate frexpl.
1173 d_inc_version_list (inc_version_list.U):
1174 This variable conditionally defines PERL_INC_VERSION_LIST.
1175 It is set to undef when PERL_INC_VERSION_LIST is empty.
1177 d_index (d_strchr.U):
1178 This variable conditionally defines HAS_INDEX if index() and
1179 rindex() are available for string searching.
1181 d_inetaton (d_inetaton.U):
1182 This variable conditionally defines the HAS_INET_ATON symbol, which
1183 indicates to the C program that the inet_aton() function is available
1184 to parse IP address "dotted-quad" strings.
1186 d_int64_t (d_int64_t.U):
1187 This symbol will be defined if the C compiler supports int64_t.
1189 d_isascii (d_isascii.U):
1190 This variable conditionally defines the HAS_ISASCII constant,
1191 which indicates to the C program that isascii() is available.
1193 d_isfinite (d_isfinite.U):
1194 This variable conditionally defines the HAS_ISFINITE symbol, which
1195 indicates to the C program that the isfinite() routine is available.
1197 d_isinf (d_isinf.U):
1198 This variable conditionally defines the HAS_ISINF symbol, which
1199 indicates to the C program that the isinf() routine is available.
1201 d_isnan (d_isnan.U):
1202 This variable conditionally defines the HAS_ISNAN symbol, which
1203 indicates to the C program that the isnan() routine is available.
1205 d_isnanl (d_isnanl.U):
1206 This variable conditionally defines the HAS_ISNANL symbol, which
1207 indicates to the C program that the isnanl() routine is available.
1209 d_killpg (d_killpg.U):
1210 This variable conditionally defines the HAS_KILLPG symbol, which
1211 indicates to the C program that the killpg() routine is available
1212 to kill process groups.
1214 d_lchown (d_lchown.U):
1215 This variable conditionally defines the HAS_LCHOWN symbol, which
1216 indicates to the C program that the lchown() routine is available
1217 to operate on a symbolic link (instead of following the link).
1219 d_ldbl_dig (d_ldbl_dig.U):
1220 This variable conditionally defines d_ldbl_dig if this system's
1221 header files provide LDBL_DIG, which is the number of significant
1222 digits in a long double precision number.
1224 d_libm_lib_version (d_libm_lib_version.U):
1225 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1226 which indicates to the C program that math.h defines _LIB_VERSION
1227 being available in libm
1230 This variable conditionally defines HAS_LINK if link() is
1231 available to create hard links.
1233 d_localtime_r (d_localtime_r.U):
1234 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1235 which indicates to the C program that the localtime_r()
1236 routine is available.
1238 d_localtime_r_needs_tzset (d_localtime_r.U):
1239 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1240 symbol, which makes us call tzset before localtime_r()
1242 d_locconv (d_locconv.U):
1243 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1244 available for numeric and monetary formatting conventions.
1246 d_lockf (d_lockf.U):
1247 This variable conditionally defines HAS_LOCKF if lockf() is
1248 available to do file locking.
1250 d_longdbl (d_longdbl.U):
1251 This variable conditionally defines HAS_LONG_DOUBLE if
1252 the long double type is supported.
1254 d_longlong (d_longlong.U):
1255 This variable conditionally defines HAS_LONG_LONG if
1256 the long long type is supported.
1258 d_lseekproto (d_lseekproto.U):
1259 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1260 which indicates to the C program that the system provides
1261 a prototype for the lseek() function. Otherwise, it is
1262 up to the program to supply one.
1264 d_lstat (d_lstat.U):
1265 This variable conditionally defines HAS_LSTAT if lstat() is
1266 available to do file stats on symbolic links.
1268 d_madvise (d_madvise.U):
1269 This variable conditionally defines HAS_MADVISE if madvise() is
1270 available to map a file into memory.
1272 d_malloc_good_size (d_malloc_size.U):
1273 This symbol, if defined, indicates that the malloc_good_size
1274 routine is available for use.
1276 d_malloc_size (d_malloc_size.U):
1277 This symbol, if defined, indicates that the malloc_size
1278 routine is available for use.
1280 d_mblen (d_mblen.U):
1281 This variable conditionally defines the HAS_MBLEN symbol, which
1282 indicates to the C program that the mblen() routine is available
1283 to find the number of bytes in a multibye character.
1285 d_mbstowcs (d_mbstowcs.U):
1286 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1287 indicates to the C program that the mbstowcs() routine is available
1288 to convert a multibyte string into a wide character string.
1290 d_mbtowc (d_mbtowc.U):
1291 This variable conditionally defines the HAS_MBTOWC symbol, which
1292 indicates to the C program that the mbtowc() routine is available
1293 to convert multibyte to a wide character.
1295 d_memchr (d_memchr.U):
1296 This variable conditionally defines the HAS_MEMCHR symbol, which
1297 indicates to the C program that the memchr() routine is available
1298 to locate characters within a C string.
1300 d_memcmp (d_memcmp.U):
1301 This variable conditionally defines the HAS_MEMCMP symbol, which
1302 indicates to the C program that the memcmp() routine is available
1303 to compare blocks of memory.
1305 d_memcpy (d_memcpy.U):
1306 This variable conditionally defines the HAS_MEMCPY symbol, which
1307 indicates to the C program that the memcpy() routine is available
1308 to copy blocks of memory.
1310 d_memmove (d_memmove.U):
1311 This variable conditionally defines the HAS_MEMMOVE symbol, which
1312 indicates to the C program that the memmove() routine is available
1313 to copy potentatially overlapping blocks of memory.
1315 d_memset (d_memset.U):
1316 This variable conditionally defines the HAS_MEMSET symbol, which
1317 indicates to the C program that the memset() routine is available
1318 to set blocks of memory.
1320 d_mkdir (d_mkdir.U):
1321 This variable conditionally defines the HAS_MKDIR symbol, which
1322 indicates to the C program that the mkdir() routine is available
1323 to create directories..
1325 d_mkdtemp (d_mkdtemp.U):
1326 This variable conditionally defines the HAS_MKDTEMP symbol, which
1327 indicates to the C program that the mkdtemp() routine is available
1328 to exclusively create a uniquely named temporary directory.
1330 d_mkfifo (d_mkfifo.U):
1331 This variable conditionally defines the HAS_MKFIFO symbol, which
1332 indicates to the C program that the mkfifo() routine is available.
1334 d_mkstemp (d_mkstemp.U):
1335 This variable conditionally defines the HAS_MKSTEMP symbol, which
1336 indicates to the C program that the mkstemp() routine is available
1337 to exclusively create and open a uniquely named temporary file.
1339 d_mkstemps (d_mkstemps.U):
1340 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1341 indicates to the C program that the mkstemps() routine is available
1342 to exclusively create and open a uniquely named (with a suffix)
1345 d_mktime (d_mktime.U):
1346 This variable conditionally defines the HAS_MKTIME symbol, which
1347 indicates to the C program that the mktime() routine is available.
1350 This variable conditionally defines HAS_MMAP if mmap() is
1351 available to map a file into memory.
1353 d_modfl (d_modfl.U):
1354 This variable conditionally defines the HAS_MODFL symbol, which
1355 indicates to the C program that the modfl() routine is available.
1357 d_modfl_pow32_bug (d_modfl.U):
1358 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1359 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1360 For example from 4294967303.150000 one would get 4294967302.000000
1361 and 1.150000. The bug has been seen in certain versions of glibc,
1362 release 2.2.2 is known to be okay.
1364 d_modflproto (d_modfl.U):
1365 This symbol, if defined, indicates that the system provides
1366 a prototype for the modfl() function. Otherwise, it is up
1367 to the program to supply one. C99 says it should be
1368 long double modfl(long double, long double *);
1370 d_mprotect (d_mprotect.U):
1371 This variable conditionally defines HAS_MPROTECT if mprotect() is
1372 available to modify the access protection of a memory mapped file.
1375 This variable conditionally defines the HAS_MSG symbol, which
1376 indicates that the entire msg*(2) library is present.
1378 d_msg_ctrunc (d_socket.U):
1379 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1380 which indicates that the MSG_CTRUNC is available. #ifdef is
1381 not enough because it may be an enum, glibc has been known to do this.
1383 d_msg_dontroute (d_socket.U):
1384 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1385 which indicates that the MSG_DONTROUTE is available. #ifdef is
1386 not enough because it may be an enum, glibc has been known to do this.
1388 d_msg_oob (d_socket.U):
1389 This variable conditionally defines the HAS_MSG_OOB symbol,
1390 which indicates that the MSG_OOB is available. #ifdef is
1391 not enough because it may be an enum, glibc has been known to do this.
1393 d_msg_peek (d_socket.U):
1394 This variable conditionally defines the HAS_MSG_PEEK symbol,
1395 which indicates that the MSG_PEEK is available. #ifdef is
1396 not enough because it may be an enum, glibc has been known to do this.
1398 d_msg_proxy (d_socket.U):
1399 This variable conditionally defines the HAS_MSG_PROXY symbol,
1400 which indicates that the MSG_PROXY is available. #ifdef is
1401 not enough because it may be an enum, glibc has been known to do this.
1403 d_msgctl (d_msgctl.U):
1404 This variable conditionally defines the HAS_MSGCTL symbol, which
1405 indicates to the C program that the msgctl() routine is available.
1407 d_msgget (d_msgget.U):
1408 This variable conditionally defines the HAS_MSGGET symbol, which
1409 indicates to the C program that the msgget() routine is available.
1411 d_msghdr_s (d_msghdr_s.U):
1412 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1413 which indicates that the struct msghdr is supported.
1415 d_msgrcv (d_msgrcv.U):
1416 This variable conditionally defines the HAS_MSGRCV symbol, which
1417 indicates to the C program that the msgrcv() routine is available.
1419 d_msgsnd (d_msgsnd.U):
1420 This variable conditionally defines the HAS_MSGSND symbol, which
1421 indicates to the C program that the msgsnd() routine is available.
1423 d_msync (d_msync.U):
1424 This variable conditionally defines HAS_MSYNC if msync() is
1425 available to synchronize a mapped file.
1427 d_munmap (d_munmap.U):
1428 This variable conditionally defines HAS_MUNMAP if munmap() is
1429 available to unmap a region mapped by mmap().
1431 d_mymalloc (mallocsrc.U):
1432 This variable conditionally defines MYMALLOC in case other parts
1433 of the source want to take special action if MYMALLOC is used.
1434 This may include different sorts of profiling or error detection.
1437 This variable conditionally defines the HAS_NICE symbol, which
1438 indicates to the C program that the nice() routine is available.
1440 d_nl_langinfo (d_nl_langinfo.U):
1441 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1442 indicates to the C program that the nl_langinfo() routine is available.
1444 d_nv_preserves_uv (perlxv.U):
1445 This variable indicates whether a variable of type nvtype
1446 can preserve all the bits a variable of type uvtype.
1448 d_nv_zero_is_allbits_zero (perlxv.U):
1449 This variable indicates whether a variable of type nvtype
1450 stores 0.0 in memory as all bits zero.
1452 d_off64_t (d_off64_t.U):
1453 This symbol will be defined if the C compiler supports off64_t.
1455 d_old_pthread_create_joinable (d_pthrattrj.U):
1456 This variable conditionally defines pthread_create_joinable.
1457 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1459 d_oldpthreads (usethreads.U):
1460 This variable conditionally defines the OLD_PTHREADS_API symbol,
1461 and indicates that Perl should be built to use the old
1462 draft POSIX threads API. This is only potentially meaningful if
1465 d_oldsock (d_socket.U):
1466 This variable conditionally defines the OLDSOCKET symbol, which
1467 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1469 d_open3 (d_open3.U):
1470 This variable conditionally defines the HAS_OPEN3 manifest constant,
1471 which indicates to the C program that the 3 argument version of
1472 the open(2) function is available.
1474 d_pathconf (d_pathconf.U):
1475 This variable conditionally defines the HAS_PATHCONF symbol, which
1476 indicates to the C program that the pathconf() routine is available
1477 to determine file-system related limits and options associated
1478 with a given filename.
1480 d_pause (d_pause.U):
1481 This variable conditionally defines the HAS_PAUSE symbol, which
1482 indicates to the C program that the pause() routine is available
1483 to suspend a process until a signal is received.
1485 d_perl_otherlibdirs (otherlibdirs.U):
1486 This variable conditionally defines PERL_OTHERLIBDIRS, which
1487 contains a colon-separated set of paths for the perl binary to
1488 include in @INC. See also otherlibdirs.
1490 d_phostname (d_gethname.U):
1491 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1492 contains the shell command which, when fed to popen(), may be
1493 used to derive the host name.
1496 This variable conditionally defines the HAS_PIPE symbol, which
1497 indicates to the C program that the pipe() routine is available
1498 to create an inter-process channel.
1501 This variable conditionally defines the HAS_POLL symbol, which
1502 indicates to the C program that the poll() routine is available
1503 to poll active file descriptors.
1505 d_portable (d_portable.U):
1506 This variable conditionally defines the PORTABLE symbol, which
1507 indicates to the C program that it should not assume that it is
1508 running on the machine it was compiled on.
1510 d_PRId64 (quadfio.U):
1511 This variable conditionally defines the PERL_PRId64 symbol, which
1512 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1514 d_PRIeldbl (longdblfio.U):
1515 This variable conditionally defines the PERL_PRIfldbl symbol, which
1516 indiciates that stdio has a symbol to print long doubles.
1518 d_PRIEUldbl (longdblfio.U):
1519 This variable conditionally defines the PERL_PRIfldbl symbol, which
1520 indiciates that stdio has a symbol to print long doubles.
1521 The 'U' in the name is to separate this from d_PRIeldbl so that even
1522 case-blind systems can see the difference.
1524 d_PRIfldbl (longdblfio.U):
1525 This variable conditionally defines the PERL_PRIfldbl symbol, which
1526 indiciates that stdio has a symbol to print long doubles.
1528 d_PRIFUldbl (longdblfio.U):
1529 This variable conditionally defines the PERL_PRIfldbl symbol, which
1530 indiciates that stdio has a symbol to print long doubles.
1531 The 'U' in the name is to separate this from d_PRIfldbl so that even
1532 case-blind systems can see the difference.
1534 d_PRIgldbl (longdblfio.U):
1535 This variable conditionally defines the PERL_PRIfldbl symbol, which
1536 indiciates that stdio has a symbol to print long doubles.
1538 d_PRIGUldbl (longdblfio.U):
1539 This variable conditionally defines the PERL_PRIfldbl symbol, which
1540 indiciates that stdio has a symbol to print long doubles.
1541 The 'U' in the name is to separate this from d_PRIgldbl so that even
1542 case-blind systems can see the difference.
1544 d_PRIi64 (quadfio.U):
1545 This variable conditionally defines the PERL_PRIi64 symbol, which
1546 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1548 d_printf_format_null (d_attribut.U):
1549 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
1550 indicates the C compiler allows printf-like formats to be null.
1552 d_PRIo64 (quadfio.U):
1553 This variable conditionally defines the PERL_PRIo64 symbol, which
1554 indiciates that stdio has a symbol to print 64-bit octal numbers.
1556 d_PRIu64 (quadfio.U):
1557 This variable conditionally defines the PERL_PRIu64 symbol, which
1558 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1561 d_PRIx64 (quadfio.U):
1562 This variable conditionally defines the PERL_PRIx64 symbol, which
1563 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1565 d_PRIXU64 (quadfio.U):
1566 This variable conditionally defines the PERL_PRIXU64 symbol, which
1567 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1568 The 'U' in the name is to separate this from d_PRIx64 so that even
1569 case-blind systems can see the difference.
1571 d_procselfexe (d_procselfexe.U):
1572 Defined if $procselfexe is symlink to the absolute
1573 pathname of the executing program.
1575 d_pthread_atfork (d_pthread_atfork.U):
1576 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1577 which indicates to the C program that the pthread_atfork()
1578 routine is available.
1580 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1581 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1582 pthread_attr_setscope() is available to set the contention scope
1583 attribute of a thread attribute object.
1585 d_pthread_yield (d_pthread_y.U):
1586 This variable conditionally defines the HAS_PTHREAD_YIELD
1587 symbol if the pthread_yield routine is available to yield
1588 the execution of the current thread.
1591 This variable conditionally defines PWAGE, which indicates
1592 that struct passwd contains pw_age.
1594 d_pwchange (i_pwd.U):
1595 This variable conditionally defines PWCHANGE, which indicates
1596 that struct passwd contains pw_change.
1598 d_pwclass (i_pwd.U):
1599 This variable conditionally defines PWCLASS, which indicates
1600 that struct passwd contains pw_class.
1602 d_pwcomment (i_pwd.U):
1603 This variable conditionally defines PWCOMMENT, which indicates
1604 that struct passwd contains pw_comment.
1606 d_pwexpire (i_pwd.U):
1607 This variable conditionally defines PWEXPIRE, which indicates
1608 that struct passwd contains pw_expire.
1610 d_pwgecos (i_pwd.U):
1611 This variable conditionally defines PWGECOS, which indicates
1612 that struct passwd contains pw_gecos.
1614 d_pwpasswd (i_pwd.U):
1615 This variable conditionally defines PWPASSWD, which indicates
1616 that struct passwd contains pw_passwd.
1618 d_pwquota (i_pwd.U):
1619 This variable conditionally defines PWQUOTA, which indicates
1620 that struct passwd contains pw_quota.
1622 d_qgcvt (d_qgcvt.U):
1623 This variable conditionally defines the HAS_QGCVT symbol, which
1624 indicates to the C program that the qgcvt() routine is available.
1626 d_quad (quadtype.U):
1627 This variable, if defined, tells that there's a 64-bit integer type,
1630 d_random_r (d_random_r.U):
1631 This variable conditionally defines the HAS_RANDOM_R symbol,
1632 which indicates to the C program that the random_r()
1633 routine is available.
1635 d_readdir (d_readdir.U):
1636 This variable conditionally defines HAS_READDIR if readdir() is
1637 available to read directory entries.
1639 d_readdir64_r (d_readdir64_r.U):
1640 This variable conditionally defines the HAS_READDIR64_R symbol,
1641 which indicates to the C program that the readdir64_r()
1642 routine is available.
1644 d_readdir_r (d_readdir_r.U):
1645 This variable conditionally defines the HAS_READDIR_R symbol,
1646 which indicates to the C program that the readdir_r()
1647 routine is available.
1649 d_readlink (d_readlink.U):
1650 This variable conditionally defines the HAS_READLINK symbol, which
1651 indicates to the C program that the readlink() routine is available
1652 to read the value of a symbolic link.
1654 d_readv (d_readv.U):
1655 This variable conditionally defines the HAS_READV symbol, which
1656 indicates to the C program that the readv() routine is available.
1658 d_recvmsg (d_recvmsg.U):
1659 This variable conditionally defines the HAS_RECVMSG symbol, which
1660 indicates to the C program that the recvmsg() routine is available.
1662 d_rename (d_rename.U):
1663 This variable conditionally defines the HAS_RENAME symbol, which
1664 indicates to the C program that the rename() routine is available
1667 d_rewinddir (d_readdir.U):
1668 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1671 d_rmdir (d_rmdir.U):
1672 This variable conditionally defines HAS_RMDIR if rmdir() is
1673 available to remove directories.
1675 d_safebcpy (d_safebcpy.U):
1676 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1677 the bcopy() routine can do overlapping copies. Normally, you
1678 should probably use memmove().
1680 d_safemcpy (d_safemcpy.U):
1681 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1682 the memcpy() routine can do overlapping copies.
1683 For overlapping copies, memmove() should be used, if available.
1685 d_sanemcmp (d_sanemcmp.U):
1686 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1687 the memcpy() routine is available and can be used to compare relative
1688 magnitudes of chars with their high bits set.
1690 d_sbrkproto (d_sbrkproto.U):
1691 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1692 which indicates to the C program that the system provides
1693 a prototype for the sbrk() function. Otherwise, it is
1694 up to the program to supply one.
1696 d_scalbnl (d_scalbnl.U):
1697 This variable conditionally defines the HAS_SCALBNL symbol, which
1698 indicates to the C program that the scalbnl() routine is available.
1699 If ilogbl is also present we can emulate frexpl.
1701 d_sched_yield (d_pthread_y.U):
1702 This variable conditionally defines the HAS_SCHED_YIELD
1703 symbol if the sched_yield routine is available to yield
1704 the execution of the current thread.
1706 d_scm_rights (d_socket.U):
1707 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1708 which indicates that the SCM_RIGHTS is available. #ifdef is
1709 not enough because it may be an enum, glibc has been known to do this.
1711 d_SCNfldbl (longdblfio.U):
1712 This variable conditionally defines the PERL_PRIfldbl symbol, which
1713 indiciates that stdio has a symbol to scan long doubles.
1715 d_seekdir (d_readdir.U):
1716 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1719 d_select (d_select.U):
1720 This variable conditionally defines HAS_SELECT if select() is
1721 available to select active file descriptors. A <sys/time.h>
1722 inclusion may be necessary for the timeout field.
1725 This variable conditionally defines the HAS_SEM symbol, which
1726 indicates that the entire sem*(2) library is present.
1728 d_semctl (d_semctl.U):
1729 This variable conditionally defines the HAS_SEMCTL symbol, which
1730 indicates to the C program that the semctl() routine is available.
1732 d_semctl_semid_ds (d_union_semun.U):
1733 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1734 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1736 d_semctl_semun (d_union_semun.U):
1737 This variable conditionally defines USE_SEMCTL_SEMUN, which
1738 indicates that union semun is to be used for semctl IPC_STAT.
1740 d_semget (d_semget.U):
1741 This variable conditionally defines the HAS_SEMGET symbol, which
1742 indicates to the C program that the semget() routine is available.
1744 d_semop (d_semop.U):
1745 This variable conditionally defines the HAS_SEMOP symbol, which
1746 indicates to the C program that the semop() routine is available.
1748 d_sendmsg (d_sendmsg.U):
1749 This variable conditionally defines the HAS_SENDMSG symbol, which
1750 indicates to the C program that the sendmsg() routine is available.
1752 d_setegid (d_setegid.U):
1753 This variable conditionally defines the HAS_SETEGID symbol, which
1754 indicates to the C program that the setegid() routine is available
1755 to change the effective gid of the current program.
1757 d_seteuid (d_seteuid.U):
1758 This variable conditionally defines the HAS_SETEUID symbol, which
1759 indicates to the C program that the seteuid() routine is available
1760 to change the effective uid of the current program.
1762 d_setgrent (d_setgrent.U):
1763 This variable conditionally defines the HAS_SETGRENT symbol, which
1764 indicates to the C program that the setgrent() routine is available
1765 for initializing sequential access to the group database.
1767 d_setgrent_r (d_setgrent_r.U):
1768 This variable conditionally defines the HAS_SETGRENT_R symbol,
1769 which indicates to the C program that the setgrent_r()
1770 routine is available.
1772 d_setgrps (d_setgrps.U):
1773 This variable conditionally defines the HAS_SETGROUPS symbol, which
1774 indicates to the C program that the setgroups() routine is available
1775 to set the list of process groups.
1777 d_sethent (d_sethent.U):
1778 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1781 d_sethostent_r (d_sethostent_r.U):
1782 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1783 which indicates to the C program that the sethostent_r()
1784 routine is available.
1786 d_setitimer (d_setitimer.U):
1787 This variable conditionally defines the HAS_SETITIMER symbol, which
1788 indicates to the C program that the setitimer() routine is available.
1790 d_setlinebuf (d_setlnbuf.U):
1791 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1792 indicates to the C program that the setlinebuf() routine is available
1793 to change stderr or stdout from block-buffered or unbuffered to a
1796 d_setlocale (d_setlocale.U):
1797 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1798 available to handle locale-specific ctype implementations.
1800 d_setlocale_r (d_setlocale_r.U):
1801 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1802 which indicates to the C program that the setlocale_r()
1803 routine is available.
1805 d_setnent (d_setnent.U):
1806 This variable conditionally defines HAS_SETNETENT if setnetent() is
1809 d_setnetent_r (d_setnetent_r.U):
1810 This variable conditionally defines the HAS_SETNETENT_R symbol,
1811 which indicates to the C program that the setnetent_r()
1812 routine is available.
1814 d_setpent (d_setpent.U):
1815 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1818 d_setpgid (d_setpgid.U):
1819 This variable conditionally defines the HAS_SETPGID symbol if the
1820 setpgid(pid, gpid) function is available to set process group ID.
1822 d_setpgrp (d_setpgrp.U):
1823 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1824 available to set the current process group.
1826 d_setpgrp2 (d_setpgrp2.U):
1827 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1828 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1829 is available to set the current process group.
1831 d_setprior (d_setprior.U):
1832 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1833 is available to set a process's priority.
1835 d_setproctitle (d_setproctitle.U):
1836 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1837 which indicates to the C program that the setproctitle() routine
1840 d_setprotoent_r (d_setprotoent_r.U):
1841 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1842 which indicates to the C program that the setprotoent_r()
1843 routine is available.
1845 d_setpwent (d_setpwent.U):
1846 This variable conditionally defines the HAS_SETPWENT symbol, which
1847 indicates to the C program that the setpwent() routine is available
1848 for initializing sequential access to the passwd database.
1850 d_setpwent_r (d_setpwent_r.U):
1851 This variable conditionally defines the HAS_SETPWENT_R symbol,
1852 which indicates to the C program that the setpwent_r()
1853 routine is available.
1855 d_setregid (d_setregid.U):
1856 This variable conditionally defines HAS_SETREGID if setregid() is
1857 available to change the real and effective gid of the current
1860 d_setresgid (d_setregid.U):
1861 This variable conditionally defines HAS_SETRESGID if setresgid() is
1862 available to change the real, effective and saved gid of the current
1865 d_setresuid (d_setreuid.U):
1866 This variable conditionally defines HAS_SETREUID if setresuid() is
1867 available to change the real, effective and saved uid of the current
1870 d_setreuid (d_setreuid.U):
1871 This variable conditionally defines HAS_SETREUID if setreuid() is
1872 available to change the real and effective uid of the current
1875 d_setrgid (d_setrgid.U):
1876 This variable conditionally defines the HAS_SETRGID symbol, which
1877 indicates to the C program that the setrgid() routine is available
1878 to change the real gid of the current program.
1880 d_setruid (d_setruid.U):
1881 This variable conditionally defines the HAS_SETRUID symbol, which
1882 indicates to the C program that the setruid() routine is available
1883 to change the real uid of the current program.
1885 d_setsent (d_setsent.U):
1886 This variable conditionally defines HAS_SETSERVENT if setservent() is
1889 d_setservent_r (d_setservent_r.U):
1890 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1891 which indicates to the C program that the setservent_r()
1892 routine is available.
1894 d_setsid (d_setsid.U):
1895 This variable conditionally defines HAS_SETSID if setsid() is
1896 available to set the process group ID.
1898 d_setvbuf (d_setvbuf.U):
1899 This variable conditionally defines the HAS_SETVBUF symbol, which
1900 indicates to the C program that the setvbuf() routine is available
1901 to change buffering on an open stdio stream.
1904 This variable conditionally defines the USE_SFIO symbol,
1905 and indicates whether sfio is available (and should be used).
1908 This variable conditionally defines the HAS_SHM symbol, which
1909 indicates that the entire shm*(2) library is present.
1911 d_shmat (d_shmat.U):
1912 This variable conditionally defines the HAS_SHMAT symbol, which
1913 indicates to the C program that the shmat() routine is available.
1915 d_shmatprototype (d_shmat.U):
1916 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1917 symbol, which indicates that sys/shm.h has a prototype for
1920 d_shmctl (d_shmctl.U):
1921 This variable conditionally defines the HAS_SHMCTL symbol, which
1922 indicates to the C program that the shmctl() routine is available.
1924 d_shmdt (d_shmdt.U):
1925 This variable conditionally defines the HAS_SHMDT symbol, which
1926 indicates to the C program that the shmdt() routine is available.
1928 d_shmget (d_shmget.U):
1929 This variable conditionally defines the HAS_SHMGET symbol, which
1930 indicates to the C program that the shmget() routine is available.
1932 d_sigaction (d_sigaction.U):
1933 This variable conditionally defines the HAS_SIGACTION symbol, which
1934 indicates that the Vr4 sigaction() routine is available.
1936 d_sigprocmask (d_sigprocmask.U):
1937 This variable conditionally defines HAS_SIGPROCMASK
1938 if sigprocmask() is available to examine or change the signal mask
1939 of the calling process.
1941 d_sigsetjmp (d_sigsetjmp.U):
1942 This variable conditionally defines the HAS_SIGSETJMP symbol,
1943 which indicates that the sigsetjmp() routine is available to
1944 call setjmp() and optionally save the process's signal mask.
1946 d_sitearch (sitearch.U):
1947 This variable conditionally defines SITEARCH to hold the pathname
1948 of architecture-dependent library files for $package. If
1949 $sitearch is the same as $archlib, then this is set to undef.
1951 d_snprintf (d_snprintf.U):
1952 This variable conditionally defines the HAS_SNPRINTF symbol, which
1953 indicates to the C program that the snprintf () library function
1956 d_sockatmark (d_sockatmark.U):
1957 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1958 indicates to the C program that the sockatmark() routine is available.
1960 d_sockatmarkproto (d_sockatmarkproto.U):
1961 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1962 which indicates to the C program that the system provides
1963 a prototype for the sockatmark() function. Otherwise, it is
1964 up to the program to supply one.
1966 d_socket (d_socket.U):
1967 This variable conditionally defines HAS_SOCKET, which indicates
1968 that the BSD socket interface is supported.
1970 d_socklen_t (d_socklen_t.U):
1971 This symbol will be defined if the C compiler supports socklen_t.
1973 d_sockpair (d_socket.U):
1974 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1975 indicates that the BSD socketpair() is supported.
1977 d_socks5_init (d_socks5_init.U):
1978 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1979 indicates to the C program that the socks5_init() routine is available.
1981 d_sprintf_returns_strlen (d_sprintf_len.U):
1982 This variable defines whether sprintf returns the length of the string
1983 (as per the ANSI spec). Some C libraries retain compatibility with
1984 pre-ANSI C and return a pointer to the passed in buffer; for these
1985 this variable will be undef.
1987 d_sqrtl (d_sqrtl.U):
1988 This variable conditionally defines the HAS_SQRTL symbol, which
1989 indicates to the C program that the sqrtl() routine is available.
1991 d_srand48_r (d_srand48_r.U):
1992 This variable conditionally defines the HAS_SRAND48_R symbol,
1993 which indicates to the C program that the srand48_r()
1994 routine is available.
1996 d_srandom_r (d_srandom_r.U):
1997 This variable conditionally defines the HAS_SRANDOM_R symbol,
1998 which indicates to the C program that the srandom_r()
1999 routine is available.
2001 d_sresgproto (d_sresgproto.U):
2002 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
2003 which indicates to the C program that the system provides
2004 a prototype for the setresgid() function. Otherwise, it is
2005 up to the program to supply one.
2007 d_sresuproto (d_sresuproto.U):
2008 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2009 which indicates to the C program that the system provides
2010 a prototype for the setresuid() function. Otherwise, it is
2011 up to the program to supply one.
2013 d_statblks (d_statblks.U):
2014 This variable conditionally defines USE_STAT_BLOCKS
2015 if this system has a stat structure declaring
2016 st_blksize and st_blocks.
2018 d_statfs_f_flags (d_statfs_f_flags.U):
2019 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2020 symbol, which indicates to struct statfs from has f_flags member.
2021 This kind of struct statfs is coming from sys/mount.h (BSD),
2022 not from sys/statfs.h (SYSV).
2024 d_statfs_s (d_statfs_s.U):
2025 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2026 which indicates that the struct statfs is supported.
2028 d_statvfs (d_statvfs.U):
2029 This variable conditionally defines the HAS_STATVFS symbol, which
2030 indicates to the C program that the statvfs() routine is available.
2032 d_stdio_cnt_lval (d_stdstdio.U):
2033 This variable conditionally defines STDIO_CNT_LVALUE if the
2034 FILE_cnt macro can be used as an lvalue.
2036 d_stdio_ptr_lval (d_stdstdio.U):
2037 This variable conditionally defines STDIO_PTR_LVALUE if the
2038 FILE_ptr macro can be used as an lvalue.
2040 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2041 This symbol is defined if using the FILE_ptr macro as an lvalue
2042 to increase the pointer by n leaves File_cnt(fp) unchanged.
2044 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2045 This symbol is defined if using the FILE_ptr macro as an lvalue
2046 to increase the pointer by n has the side effect of decreasing the
2047 value of File_cnt(fp) by n.
2049 d_stdio_stream_array (stdio_streams.U):
2050 This variable tells whether there is an array holding
2053 d_stdiobase (d_stdstdio.U):
2054 This variable conditionally defines USE_STDIO_BASE if this system
2055 has a FILE structure declaring a usable _base field (or equivalent)
2058 d_stdstdio (d_stdstdio.U):
2059 This variable conditionally defines USE_STDIO_PTR if this system
2060 has a FILE structure declaring usable _ptr and _cnt fields (or
2061 equivalent) in stdio.h.
2063 d_strchr (d_strchr.U):
2064 This variable conditionally defines HAS_STRCHR if strchr() and
2065 strrchr() are available for string searching.
2067 d_strcoll (d_strcoll.U):
2068 This variable conditionally defines HAS_STRCOLL if strcoll() is
2069 available to compare strings using collating information.
2071 d_strctcpy (d_strctcpy.U):
2072 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2073 indicates to the C program that this C compiler knows how to copy
2076 d_strerrm (d_strerror.U):
2077 This variable holds what Strerrr is defined as to translate an error
2078 code condition into an error message string. It could be 'strerror'
2079 or a more complex macro emulating strrror with sys_errlist[], or the
2080 "unknown" string when both strerror and sys_errlist are missing.
2082 d_strerror (d_strerror.U):
2083 This variable conditionally defines HAS_STRERROR if strerror() is
2084 available to translate error numbers to strings.
2086 d_strerror_r (d_strerror_r.U):
2087 This variable conditionally defines the HAS_STRERROR_R symbol,
2088 which indicates to the C program that the strerror_r()
2089 routine is available.
2091 d_strftime (d_strftime.U):
2092 This variable conditionally defines the HAS_STRFTIME symbol, which
2093 indicates to the C program that the strftime() routine is available.
2095 d_strlcat (d_strlcat.U):
2096 This variable conditionally defines the HAS_STRLCAT symbol, which
2097 indicates to the C program that the strlcat () routine is available.
2099 d_strlcpy (d_strlcpy.U):
2100 This variable conditionally defines the HAS_STRLCPY symbol, which
2101 indicates to the C program that the strlcpy () routine is available.
2103 d_strtod (d_strtod.U):
2104 This variable conditionally defines the HAS_STRTOD symbol, which
2105 indicates to the C program that the strtod() routine is available
2106 to provide better numeric string conversion than atof().
2108 d_strtol (d_strtol.U):
2109 This variable conditionally defines the HAS_STRTOL symbol, which
2110 indicates to the C program that the strtol() routine is available
2111 to provide better numeric string conversion than atoi() and friends.
2113 d_strtold (d_strtold.U):
2114 This variable conditionally defines the HAS_STRTOLD symbol, which
2115 indicates to the C program that the strtold() routine is available.
2117 d_strtoll (d_strtoll.U):
2118 This variable conditionally defines the HAS_STRTOLL symbol, which
2119 indicates to the C program that the strtoll() routine is available.
2121 d_strtoq (d_strtoq.U):
2122 This variable conditionally defines the HAS_STRTOQ symbol, which
2123 indicates to the C program that the strtoq() routine is available.
2125 d_strtoul (d_strtoul.U):
2126 This variable conditionally defines the HAS_STRTOUL symbol, which
2127 indicates to the C program that the strtoul() routine is available
2128 to provide conversion of strings to unsigned long.
2130 d_strtoull (d_strtoull.U):
2131 This variable conditionally defines the HAS_STRTOULL symbol, which
2132 indicates to the C program that the strtoull() routine is available.
2134 d_strtouq (d_strtouq.U):
2135 This variable conditionally defines the HAS_STRTOUQ symbol, which
2136 indicates to the C program that the strtouq() routine is available.
2138 d_strxfrm (d_strxfrm.U):
2139 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2140 available to transform strings.
2142 d_suidsafe (d_dosuid.U):
2143 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2144 if setuid scripts can be secure. This test looks in /dev/fd/.
2146 d_symlink (d_symlink.U):
2147 This variable conditionally defines the HAS_SYMLINK symbol, which
2148 indicates to the C program that the symlink() routine is available
2149 to create symbolic links.
2151 d_syscall (d_syscall.U):
2152 This variable conditionally defines HAS_SYSCALL if syscall() is
2153 available call arbitrary system calls.
2155 d_syscallproto (d_syscallproto.U):
2156 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2157 which indicates to the C program that the system provides
2158 a prototype for the syscall() function. Otherwise, it is
2159 up to the program to supply one.
2161 d_sysconf (d_sysconf.U):
2162 This variable conditionally defines the HAS_SYSCONF symbol, which
2163 indicates to the C program that the sysconf() routine is available
2164 to determine system related limits and options.
2166 d_sysernlst (d_strerror.U):
2167 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2168 is available to translate error numbers to the symbolic name.
2170 d_syserrlst (d_strerror.U):
2171 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2172 available to translate error numbers to strings.
2174 d_system (d_system.U):
2175 This variable conditionally defines HAS_SYSTEM if system() is
2176 available to issue a shell command.
2178 d_tcgetpgrp (d_tcgtpgrp.U):
2179 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2180 indicates to the C program that the tcgetpgrp() routine is available.
2181 to get foreground process group ID.
2183 d_tcsetpgrp (d_tcstpgrp.U):
2184 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2185 indicates to the C program that the tcsetpgrp() routine is available
2186 to set foreground process group ID.
2188 d_telldir (d_readdir.U):
2189 This variable conditionally defines HAS_TELLDIR if telldir() is
2192 d_telldirproto (d_telldirproto.U):
2193 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2194 which indicates to the C program that the system provides
2195 a prototype for the telldir() function. Otherwise, it is
2196 up to the program to supply one.
2199 This variable conditionally defines the HAS_TIME symbol, which indicates
2200 that the time() routine exists. The time() routine is normaly
2201 provided on UNIX systems.
2203 d_times (d_times.U):
2204 This variable conditionally defines the HAS_TIMES symbol, which indicates
2205 that the times() routine exists. The times() routine is normaly
2206 provided on UNIX systems. You may have to include <sys/times.h>.
2208 d_tm_tm_gmtoff (i_time.U):
2209 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2210 indicates to the C program that the struct tm has the tm_gmtoff field.
2212 d_tm_tm_zone (i_time.U):
2213 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2214 indicates to the C program that the struct tm has the tm_zone field.
2216 d_tmpnam_r (d_tmpnam_r.U):
2217 This variable conditionally defines the HAS_TMPNAM_R symbol,
2218 which indicates to the C program that the tmpnam_r()
2219 routine is available.
2221 d_truncate (d_truncate.U):
2222 This variable conditionally defines HAS_TRUNCATE if truncate() is
2223 available to truncate files.
2225 d_ttyname_r (d_ttyname_r.U):
2226 This variable conditionally defines the HAS_TTYNAME_R symbol,
2227 which indicates to the C program that the ttyname_r()
2228 routine is available.
2230 d_tzname (d_tzname.U):
2231 This variable conditionally defines HAS_TZNAME if tzname[] is
2232 available to access timezone names.
2234 d_u32align (d_u32align.U):
2235 This variable tells whether you must access character data
2236 through U32-aligned pointers.
2238 d_ualarm (d_ualarm.U):
2239 This variable conditionally defines the HAS_UALARM symbol, which
2240 indicates to the C program that the ualarm() routine is available.
2242 d_umask (d_umask.U):
2243 This variable conditionally defines the HAS_UMASK symbol, which
2244 indicates to the C program that the umask() routine is available.
2245 to set and get the value of the file creation mask.
2247 d_uname (d_gethname.U):
2248 This variable conditionally defines the HAS_UNAME symbol, which
2249 indicates to the C program that the uname() routine may be
2250 used to derive the host name.
2252 d_union_semun (d_union_semun.U):
2253 This variable conditionally defines HAS_UNION_SEMUN if the
2254 union semun is defined by including <sys/sem.h>.
2256 d_unordered (d_unordered.U):
2257 This variable conditionally defines the HAS_UNORDERED symbol, which
2258 indicates to the C program that the unordered() routine is available.
2260 d_unsetenv (d_unsetenv.U):
2261 This variable conditionally defines the HAS_UNSETENV symbol, which
2262 indicates to the C program that the unsetenv () routine is available.
2264 d_usleep (d_usleep.U):
2265 This variable conditionally defines HAS_USLEEP if usleep() is
2266 available to do high granularity sleeps.
2268 d_usleepproto (d_usleepproto.U):
2269 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2270 which indicates to the C program that the system provides
2271 a prototype for the usleep() function. Otherwise, it is
2272 up to the program to supply one.
2274 d_ustat (d_ustat.U):
2275 This variable conditionally defines HAS_USTAT if ustat() is
2276 available to query file system statistics by dev_t.
2278 d_vendorarch (vendorarch.U):
2279 This variable conditionally defined PERL_VENDORARCH.
2281 d_vendorbin (vendorbin.U):
2282 This variable conditionally defines PERL_VENDORBIN.
2284 d_vendorlib (vendorlib.U):
2285 This variable conditionally defines PERL_VENDORLIB.
2287 d_vendorscript (vendorscript.U):
2288 This variable conditionally defines PERL_VENDORSCRIPT.
2290 d_vfork (d_vfork.U):
2291 This variable conditionally defines the HAS_VFORK symbol, which
2292 indicates the vfork() routine is available.
2294 d_void_closedir (d_closedir.U):
2295 This variable conditionally defines VOID_CLOSEDIR if closedir()
2296 does not return a value.
2298 d_voidsig (d_voidsig.U):
2299 This variable conditionally defines VOIDSIG if this system
2300 declares "void (*signal(...))()" in signal.h. The old way was to
2301 declare it as "int (*signal(...))()".
2303 d_voidtty (i_sysioctl.U):
2304 This variable conditionally defines USE_IOCNOTTY to indicate that the
2305 ioctl() call with TIOCNOTTY should be used to void tty association.
2306 Otherwise (on USG probably), it is enough to close the standard file
2307 decriptors and do a setpgrp().
2309 d_volatile (d_volatile.U):
2310 This variable conditionally defines the HASVOLATILE symbol, which
2311 indicates to the C program that this C compiler knows about the
2312 volatile declaration.
2314 d_vprintf (d_vprintf.U):
2315 This variable conditionally defines the HAS_VPRINTF symbol, which
2316 indicates to the C program that the vprintf() routine is available
2317 to printf with a pointer to an argument list.
2319 d_vsnprintf (d_snprintf.U):
2320 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2321 indicates to the C program that the vsnprintf () library function
2324 d_wait4 (d_wait4.U):
2325 This variable conditionally defines the HAS_WAIT4 symbol, which
2326 indicates the wait4() routine is available.
2328 d_waitpid (d_waitpid.U):
2329 This variable conditionally defines HAS_WAITPID if waitpid() is
2330 available to wait for child process.
2332 d_wcstombs (d_wcstombs.U):
2333 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2334 indicates to the C program that the wcstombs() routine is available
2335 to convert wide character strings to multibyte strings.
2337 d_wctomb (d_wctomb.U):
2338 This variable conditionally defines the HAS_WCTOMB symbol, which
2339 indicates to the C program that the wctomb() routine is available
2340 to convert a wide character to a multibyte.
2342 d_writev (d_writev.U):
2343 This variable conditionally defines the HAS_WRITEV symbol, which
2344 indicates to the C program that the writev() routine is available.
2347 This variable conditionally defines the symbol XENIX, which alerts
2348 the C program that it runs under Xenix.
2351 This variable is used internally by Configure to determine the
2352 full pathname (if any) of the date program. After Configure runs,
2353 the value is reset to a plain "date" and is not useful.
2355 db_hashtype (i_db.U):
2356 This variable contains the type of the hash structure element
2357 in the <db.h> header file. In older versions of DB, it was
2358 int, while in newer ones it is u_int32_t.
2360 db_prefixtype (i_db.U):
2361 This variable contains the type of the prefix structure element
2362 in the <db.h> header file. In older versions of DB, it was
2363 int, while in newer ones it is size_t.
2365 db_version_major (i_db.U):
2366 This variable contains the major version number of
2367 Berkeley DB found in the <db.h> header file.
2369 db_version_minor (i_db.U):
2370 This variable contains the minor version number of
2371 Berkeley DB found in the <db.h> header file.
2372 For DB version 1 this is always 0.
2374 db_version_patch (i_db.U):
2375 This variable contains the patch version number of
2376 Berkeley DB found in the <db.h> header file.
2377 For DB version 1 this is always 0.
2379 defvoidused (voidflags.U):
2380 This variable contains the default value of the VOIDUSED symbol (15).
2382 direntrytype (i_dirent.U):
2383 This symbol is set to 'struct direct' or 'struct dirent' depending on
2384 whether dirent is available or not. You should use this pseudo type to
2385 portably declare your directory entries.
2388 This variable contains the extension that is to be used for the
2389 dynamically loaded modules that perl generaties.
2392 This variable contains the name of the dynamic loading file that
2393 will be used with the package.
2395 doublesize (doublesize.U):
2396 This variable contains the value of the DOUBLESIZE symbol, which
2397 indicates to the C program how many bytes there are in a double.
2399 drand01 (randfunc.U):
2400 Indicates the macro to be used to generate normalized
2401 random numbers. Uses randfunc, often divided by
2402 (double) (((unsigned long) 1 << randbits)) in order to
2403 normalize the result.
2404 In C programs, the macro 'Drand01' is mapped to drand01.
2406 drand48_r_proto (d_drand48_r.U):
2407 This variable encodes the prototype of drand48_r.
2408 It is zero if d_drand48_r is undef, and one of the
2409 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2412 dynamic_ext (Extensions.U):
2413 This variable holds a list of XS extension files we want to
2414 link dynamically into the package. It is used by Makefile.
2416 eagain (nblock_io.U):
2417 This variable bears the symbolic errno code set by read() when no
2418 data is present on the file and non-blocking I/O was enabled (otherwise,
2419 read() blocks naturally).
2422 This variable conditionally defines EBCDIC if this
2423 system uses EBCDIC encoding. Among other things, this
2424 means that the character ranges are not contiguous.
2428 This variable is used internally by Configure to determine the
2429 full pathname (if any) of the echo program. After Configure runs,
2430 the value is reset to a plain "echo" and is not useful.
2433 This variable is used internally by Configure to determine the
2434 full pathname (if any) of the egrep program. After Configure runs,
2435 the value is reset to a plain "egrep" and is not useful.
2438 This variable is defined but not used by Configure.
2439 The value is a plain '' and is not useful.
2441 endgrent_r_proto (d_endgrent_r.U):
2442 This variable encodes the prototype of endgrent_r.
2443 It is zero if d_endgrent_r is undef, and one of the
2444 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2447 endhostent_r_proto (d_endhostent_r.U):
2448 This variable encodes the prototype of endhostent_r.
2449 It is zero if d_endhostent_r is undef, and one of the
2450 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2453 endnetent_r_proto (d_endnetent_r.U):
2454 This variable encodes the prototype of endnetent_r.
2455 It is zero if d_endnetent_r is undef, and one of the
2456 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2459 endprotoent_r_proto (d_endprotoent_r.U):
2460 This variable encodes the prototype of endprotoent_r.
2461 It is zero if d_endprotoent_r is undef, and one of the
2462 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2465 endpwent_r_proto (d_endpwent_r.U):
2466 This variable encodes the prototype of endpwent_r.
2467 It is zero if d_endpwent_r is undef, and one of the
2468 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2471 endservent_r_proto (d_endservent_r.U):
2472 This variable encodes the prototype of endservent_r.
2473 It is zero if d_endservent_r is undef, and one of the
2474 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2478 When running under Eunice this variable contains a command which will
2479 convert a shell script to the proper form of text file for it to be
2480 executable by the shell. On other systems it is a no-op.
2483 This is an old synonym for _exe.
2486 This variable is used internally by Configure to determine the
2487 full pathname (if any) of the expr program. After Configure runs,
2488 the value is reset to a plain "expr" and is not useful.
2490 extensions (Extensions.U):
2491 This variable holds a list of all extension files (both XS and
2492 non-xs linked into the package. It is propagated to Config.pm
2493 and is typically used to test whether a particular extesion
2497 This variable holds a list of extra modules to install.
2499 fflushall (fflushall.U):
2500 This symbol, if defined, tells that to flush
2501 all pending stdio output one must loop through all
2502 the stdio file handles stored in an array and fflush them.
2503 Note that if fflushNULL is defined, fflushall will not
2504 even be probed for and will be left undefined.
2506 fflushNULL (fflushall.U):
2507 This symbol, if defined, tells that fflush(NULL) does flush
2508 all pending stdio output.
2511 This variable is defined but not used by Configure.
2512 The value is a plain '' and is not useful.
2514 firstmakefile (Unix.U):
2515 This variable defines the first file searched by make. On unix,
2516 it is makefile (then Makefile). On case-insensitive systems,
2517 it might be something else. This is only used to deal with
2518 convoluted make depend tricks.
2521 This variable is defined but not used by Configure.
2522 The value is a plain '' and is not useful.
2524 fpossize (fpossize.U):
2525 This variable contains the size of a fpostype in bytes.
2527 fpostype (fpostype.U):
2528 This variable defines Fpos_t to be something like fpos_t, long,
2529 uint, or whatever type is used to declare file positions in libc.
2531 freetype (mallocsrc.U):
2532 This variable contains the return type of free(). It is usually
2533 void, but occasionally int.
2536 This variable contains the command used by Configure
2537 to copy files from the target host. Useful and available
2538 only during Perl build.
2539 The string ':' if not cross-compiling.
2542 This variable contains the full pathname to 'ar', whether or
2543 not the user has specified 'portability'. This is only used
2547 This variable contains the full pathname to 'csh', whether or
2548 not the user has specified 'portability'. This is only used
2549 in the compiled C program, and we assume that all systems which
2550 can share this executable will have the same full pathname to
2553 full_sed (Loc_sed.U):
2554 This variable contains the full pathname to 'sed', whether or
2555 not the user has specified 'portability'. This is only used
2556 in the compiled C program, and we assume that all systems which
2557 can share this executable will have the same full pathname to
2560 gccansipedantic (gccvers.U):
2561 If GNU cc (gcc) is used, this variable will enable (if set) the
2562 -ansi and -pedantic ccflags for building core files (through
2563 cflags script). (See Porting/pumpkin.pod for full description).
2565 gccosandvers (gccvers.U):
2566 If GNU cc (gcc) is used, this variable holds the operating system
2567 and version used to compile gcc. It is set to '' if not gcc,
2568 or if nothing useful can be parsed as the os version.
2570 gccversion (gccvers.U):
2571 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2572 indicate whether the compiler is version 1 or 2. This is used in
2573 setting some of the default cflags. It is set to '' if not gcc.
2575 getgrent_r_proto (d_getgrent_r.U):
2576 This variable encodes the prototype of getgrent_r.
2577 It is zero if d_getgrent_r is undef, and one of the
2578 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2581 getgrgid_r_proto (d_getgrgid_r.U):
2582 This variable encodes the prototype of getgrgid_r.
2583 It is zero if d_getgrgid_r is undef, and one of the
2584 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2587 getgrnam_r_proto (d_getgrnam_r.U):
2588 This variable encodes the prototype of getgrnam_r.
2589 It is zero if d_getgrnam_r is undef, and one of the
2590 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2593 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2594 This variable encodes the prototype of gethostbyaddr_r.
2595 It is zero if d_gethostbyaddr_r is undef, and one of the
2596 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2599 gethostbyname_r_proto (d_gethostbyname_r.U):
2600 This variable encodes the prototype of gethostbyname_r.
2601 It is zero if d_gethostbyname_r is undef, and one of the
2602 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2605 gethostent_r_proto (d_gethostent_r.U):
2606 This variable encodes the prototype of gethostent_r.
2607 It is zero if d_gethostent_r is undef, and one of the
2608 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2611 getlogin_r_proto (d_getlogin_r.U):
2612 This variable encodes the prototype of getlogin_r.
2613 It is zero if d_getlogin_r is undef, and one of the
2614 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2617 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2618 This variable encodes the prototype of getnetbyaddr_r.
2619 It is zero if d_getnetbyaddr_r is undef, and one of the
2620 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2623 getnetbyname_r_proto (d_getnetbyname_r.U):
2624 This variable encodes the prototype of getnetbyname_r.
2625 It is zero if d_getnetbyname_r is undef, and one of the
2626 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2629 getnetent_r_proto (d_getnetent_r.U):
2630 This variable encodes the prototype of getnetent_r.
2631 It is zero if d_getnetent_r is undef, and one of the
2632 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2635 getprotobyname_r_proto (d_getprotobyname_r.U):
2636 This variable encodes the prototype of getprotobyname_r.
2637 It is zero if d_getprotobyname_r is undef, and one of the
2638 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2641 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2642 This variable encodes the prototype of getprotobynumber_r.
2643 It is zero if d_getprotobynumber_r is undef, and one of the
2644 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2647 getprotoent_r_proto (d_getprotoent_r.U):
2648 This variable encodes the prototype of getprotoent_r.
2649 It is zero if d_getprotoent_r is undef, and one of the
2650 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2653 getpwent_r_proto (d_getpwent_r.U):
2654 This variable encodes the prototype of getpwent_r.
2655 It is zero if d_getpwent_r is undef, and one of the
2656 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2659 getpwnam_r_proto (d_getpwnam_r.U):
2660 This variable encodes the prototype of getpwnam_r.
2661 It is zero if d_getpwnam_r is undef, and one of the
2662 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2665 getpwuid_r_proto (d_getpwuid_r.U):
2666 This variable encodes the prototype of getpwuid_r.
2667 It is zero if d_getpwuid_r is undef, and one of the
2668 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2671 getservbyname_r_proto (d_getservbyname_r.U):
2672 This variable encodes the prototype of getservbyname_r.
2673 It is zero if d_getservbyname_r is undef, and one of the
2674 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2677 getservbyport_r_proto (d_getservbyport_r.U):
2678 This variable encodes the prototype of getservbyport_r.
2679 It is zero if d_getservbyport_r is undef, and one of the
2680 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2683 getservent_r_proto (d_getservent_r.U):
2684 This variable encodes the prototype of getservent_r.
2685 It is zero if d_getservent_r is undef, and one of the
2686 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2689 getspnam_r_proto (d_getspnam_r.U):
2690 This variable encodes the prototype of getspnam_r.
2691 It is zero if d_getspnam_r is undef, and one of the
2692 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2696 This variable contains the format string used for printing a Gid_t.
2698 gidsign (gidsign.U):
2699 This variable contains the signedness of a gidtype.
2700 1 for unsigned, -1 for signed.
2702 gidsize (gidsize.U):
2703 This variable contains the size of a gidtype in bytes.
2705 gidtype (gidtype.U):
2706 This variable defines Gid_t to be something like gid_t, int,
2707 ushort, or whatever type is used to declare the return type
2708 of getgid(). Typically, it is the type of group ids in the kernel.
2711 This variable holds the general path (space-separated) used to
2712 find libraries. It may contain directories that do not exist on
2713 this platform, libpth is the cleaned-up version.
2716 This variable is used internally by Configure to determine the
2717 full pathname (if any) of the gmake program. After Configure runs,
2718 the value is reset to a plain "gmake" and is not useful.
2720 gmtime_r_proto (d_gmtime_r.U):
2721 This variable encodes the prototype of gmtime_r.
2722 It is zero if d_gmtime_r is undef, and one of the
2723 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2726 gnulibc_version (d_gnulibc.U):
2727 This variable contains the version number of the GNU C library.
2728 It is usually something like '2.2.5'. It is a plain '' if this
2729 is not the GNU C library, or if the version is unknown.
2732 This variable is used internally by Configure to determine the
2733 full pathname (if any) of the grep program. After Configure runs,
2734 the value is reset to a plain "grep" and is not useful.
2737 This variable contains a command that produces the text of the
2738 /etc/group file. This is normally "cat /etc/group", but can be
2739 "ypcat group" when NIS is used.
2740 On some systems, such as os390, there may be no equivalent
2741 command, in which case this variable is unset.
2743 groupstype (groupstype.U):
2744 This variable defines Groups_t to be something like gid_t, int,
2745 ushort, or whatever type is used for the second argument to
2746 getgroups() and setgroups(). Usually, this is the same as
2747 gidtype (gid_t), but sometimes it isn't.
2750 This variable is used internally by Configure to determine the
2751 full pathname (if any) of the gzip program. After Configure runs,
2752 the value is reset to a plain "gzip" and is not useful.
2754 h_fcntl (h_fcntl.U):
2755 This is variable gets set in various places to tell i_fcntl that
2756 <fcntl.h> should be included.
2758 h_sysfile (h_sysfile.U):
2759 This is variable gets set in various places to tell i_sys_file that
2760 <sys/file.h> should be included.
2763 Gives the type of hints used for previous answers. May be one of
2764 "default", "recommended" or "previous".
2767 This variable contains a command that produces the text of the
2768 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2769 "ypcat hosts" when NIS is used.
2770 On some systems, such as os390, there may be no equivalent
2771 command, in which case this variable is unset.
2773 html1dir (html1dir.U):
2774 This variable contains the name of the directory in which html
2775 source pages are to be put. This directory is for pages
2776 that describe whole programs, not libraries or modules. It
2777 is intended to correspond roughly to section 1 of the Unix
2780 html1direxp (html1dir.U):
2781 This variable is the same as the html1dir variable, but is filename
2782 expanded at configuration time, for convenient use in makefiles.
2784 html3dir (html3dir.U):
2785 This variable contains the name of the directory in which html
2786 source pages are to be put. This directory is for pages
2787 that describe libraries or modules. It is intended to
2788 correspond roughly to section 3 of the Unix manuals.
2790 html3direxp (html3dir.U):
2791 This variable is the same as the html3dir variable, but is filename
2792 expanded at configuration time, for convenient use in makefiles.
2795 This variable is the size of an I16 in bytes.
2798 This variable contains the C type used for Perl's I16.
2801 This variable is the size of an I32 in bytes.
2804 This variable contains the C type used for Perl's I32.
2807 This variable is the size of an I64 in bytes.
2810 This variable contains the C type used for Perl's I64.
2813 This variable is the size of an I8 in bytes.
2816 This variable contains the C type used for Perl's I8.
2818 i_arpainet (i_arpainet.U):
2819 This variable conditionally defines the I_ARPA_INET symbol,
2820 and indicates whether a C program should include <arpa/inet.h>.
2822 i_bsdioctl (i_sysioctl.U):
2823 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2824 indicates to the C program that <sys/bsdioctl.h> exists and should
2827 i_crypt (i_crypt.U):
2828 This variable conditionally defines the I_CRYPT symbol, and indicates
2829 whether a C program should include <crypt.h>.
2832 This variable conditionally defines the I_DB symbol, and indicates
2833 whether a C program may include Berkeley's DB include file <db.h>.
2836 This variable conditionally defines the I_DBM symbol, which
2837 indicates to the C program that <dbm.h> exists and should
2840 i_dirent (i_dirent.U):
2841 This variable conditionally defines I_DIRENT, which indicates
2842 to the C program that it should include <dirent.h>.
2845 This variable conditionally defines the I_DLD symbol, which
2846 indicates to the C program that <dld.h> (GNU dynamic loading)
2847 exists and should be included.
2849 i_dlfcn (i_dlfcn.U):
2850 This variable conditionally defines the I_DLFCN symbol, which
2851 indicates to the C program that <dlfcn.h> exists and should
2854 i_fcntl (i_fcntl.U):
2855 This variable controls the value of I_FCNTL (which tells
2856 the C program to include <fcntl.h>).
2858 i_float (i_float.U):
2859 This variable conditionally defines the I_FLOAT symbol, and indicates
2860 whether a C program may include <float.h> to get symbols like DBL_MAX
2861 or DBL_MIN, i.e. machine dependent floating point values.
2864 This variable conditionally defines the I_FP symbol, and indicates
2865 whether a C program should include <fp.h>.
2867 i_fp_class (i_fp_class.U):
2868 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2869 whether a C program should include <fp_class.h>.
2872 This variable conditionally defines the I_GDBM symbol, which
2873 indicates to the C program that <gdbm.h> exists and should
2877 This variable conditionally defines the I_GRP symbol, and indicates
2878 whether a C program should include <grp.h>.
2880 i_ieeefp (i_ieeefp.U):
2881 This variable conditionally defines the I_IEEEFP symbol, and indicates
2882 whether a C program should include <ieeefp.h>.
2884 i_inttypes (i_inttypes.U):
2885 This variable conditionally defines the I_INTTYPES symbol,
2886 and indicates whether a C program should include <inttypes.h>.
2888 i_langinfo (i_langinfo.U):
2889 This variable conditionally defines the I_LANGINFO symbol,
2890 and indicates whether a C program should include <langinfo.h>.
2892 i_libutil (i_libutil.U):
2893 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2894 whether a C program should include <libutil.h>.
2896 i_limits (i_limits.U):
2897 This variable conditionally defines the I_LIMITS symbol, and indicates
2898 whether a C program may include <limits.h> to get symbols like WORD_BIT
2901 i_locale (i_locale.U):
2902 This variable conditionally defines the I_LOCALE symbol,
2903 and indicates whether a C program should include <locale.h>.
2905 i_machcthr (i_machcthr.U):
2906 This variable conditionally defines the I_MACH_CTHREADS symbol,
2907 and indicates whether a C program should include <mach/cthreads.h>.
2909 i_malloc (i_malloc.U):
2910 This variable conditionally defines the I_MALLOC symbol, and indicates
2911 whether a C program should include <malloc.h>.
2914 This variable conditionally defines the I_MATH symbol, and indicates
2915 whether a C program may include <math.h>.
2917 i_memory (i_memory.U):
2918 This variable conditionally defines the I_MEMORY symbol, and indicates
2919 whether a C program should include <memory.h>.
2921 i_mntent (i_mntent.U):
2922 This variable conditionally defines the I_MNTENT symbol, and indicates
2923 whether a C program should include <mntent.h>.
2926 This variable conditionally defines the I_NDBM symbol, which
2927 indicates to the C program that <ndbm.h> exists and should
2930 i_netdb (i_netdb.U):
2931 This variable conditionally defines the I_NETDB symbol, and indicates
2932 whether a C program should include <netdb.h>.
2934 i_neterrno (i_neterrno.U):
2935 This variable conditionally defines the I_NET_ERRNO symbol, which
2936 indicates to the C program that <net/errno.h> exists and should
2939 i_netinettcp (i_netinettcp.U):
2940 This variable conditionally defines the I_NETINET_TCP symbol,
2941 and indicates whether a C program should include <netinet/tcp.h>.
2944 This variable conditionally defines I_NETINET_IN, which indicates
2945 to the C program that it should include <netinet/in.h>. Otherwise,
2946 you may try <sys/in.h>.
2949 This variable conditionally defines the I_POLL symbol, and indicates
2950 whether a C program should include <poll.h>.
2953 This variable conditionally defines the I_PROT symbol, and indicates
2954 whether a C program should include <prot.h>.
2956 i_pthread (i_pthread.U):
2957 This variable conditionally defines the I_PTHREAD symbol,
2958 and indicates whether a C program should include <pthread.h>.
2961 This variable conditionally defines I_PWD, which indicates
2962 to the C program that it should include <pwd.h>.
2964 i_rpcsvcdbm (i_dbm.U):
2965 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2966 indicates to the C program that <rpcsvc/dbm.h> exists and should
2967 be included. Some System V systems might need this instead of <dbm.h>.
2970 This variable conditionally defines the I_SFIO symbol,
2971 and indicates whether a C program should include <sfio.h>.
2973 i_sgtty (i_termio.U):
2974 This variable conditionally defines the I_SGTTY symbol, which
2975 indicates to the C program that it should include <sgtty.h> rather
2978 i_shadow (i_shadow.U):
2979 This variable conditionally defines the I_SHADOW symbol, and indicates
2980 whether a C program should include <shadow.h>.
2982 i_socks (i_socks.U):
2983 This variable conditionally defines the I_SOCKS symbol, and indicates
2984 whether a C program should include <socks.h>.
2986 i_stdarg (i_varhdr.U):
2987 This variable conditionally defines the I_STDARG symbol, which
2988 indicates to the C program that <stdarg.h> exists and should
2991 i_stddef (i_stddef.U):
2992 This variable conditionally defines the I_STDDEF symbol, which
2993 indicates to the C program that <stddef.h> exists and should
2996 i_stdlib (i_stdlib.U):
2997 This variable conditionally defines the I_STDLIB symbol, which
2998 indicates to the C program that <stdlib.h> exists and should
3001 i_string (i_string.U):
3002 This variable conditionally defines the I_STRING symbol, which
3003 indicates that <string.h> should be included rather than <strings.h>.
3005 i_sunmath (i_sunmath.U):
3006 This variable conditionally defines the I_SUNMATH symbol, and indicates
3007 whether a C program should include <sunmath.h>.
3009 i_sysaccess (i_sysaccess.U):
3010 This variable conditionally defines the I_SYS_ACCESS symbol,
3011 and indicates whether a C program should include <sys/access.h>.
3013 i_sysdir (i_sysdir.U):
3014 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3015 whether a C program should include <sys/dir.h>.
3017 i_sysfile (i_sysfile.U):
3018 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3019 whether a C program should include <sys/file.h> to get R_OK and friends.
3021 i_sysfilio (i_sysioctl.U):
3022 This variable conditionally defines the I_SYS_FILIO symbol, which
3023 indicates to the C program that <sys/filio.h> exists and should
3024 be included in preference to <sys/ioctl.h>.
3027 This variable conditionally defines I_SYS_IN, which indicates
3028 to the C program that it should include <sys/in.h> instead of
3031 i_sysioctl (i_sysioctl.U):
3032 This variable conditionally defines the I_SYS_IOCTL symbol, which
3033 indicates to the C program that <sys/ioctl.h> exists and should
3036 i_syslog (i_syslog.U):
3037 This variable conditionally defines the I_SYSLOG symbol,
3038 and indicates whether a C program should include <syslog.h>.
3040 i_sysmman (i_sysmman.U):
3041 This variable conditionally defines the I_SYS_MMAN symbol, and
3042 indicates whether a C program should include <sys/mman.h>.
3044 i_sysmode (i_sysmode.U):
3045 This variable conditionally defines the I_SYSMODE symbol,
3046 and indicates whether a C program should include <sys/mode.h>.
3048 i_sysmount (i_sysmount.U):
3049 This variable conditionally defines the I_SYSMOUNT symbol,
3050 and indicates whether a C program should include <sys/mount.h>.
3052 i_sysndir (i_sysndir.U):
3053 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3054 whether a C program should include <sys/ndir.h>.
3056 i_sysparam (i_sysparam.U):
3057 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3058 whether a C program should include <sys/param.h>.
3060 i_sysresrc (i_sysresrc.U):
3061 This variable conditionally defines the I_SYS_RESOURCE symbol,
3062 and indicates whether a C program should include <sys/resource.h>.
3064 i_syssecrt (i_syssecrt.U):
3065 This variable conditionally defines the I_SYS_SECURITY symbol,
3066 and indicates whether a C program should include <sys/security.h>.
3068 i_sysselct (i_sysselct.U):
3069 This variable conditionally defines I_SYS_SELECT, which indicates
3070 to the C program that it should include <sys/select.h> in order to
3071 get the definition of struct timeval.
3073 i_syssockio (i_sysioctl.U):
3074 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3075 C program that socket ioctl codes may be found in <sys/sockio.h>
3076 instead of <sys/ioctl.h>.
3078 i_sysstat (i_sysstat.U):
3079 This variable conditionally defines the I_SYS_STAT symbol,
3080 and indicates whether a C program should include <sys/stat.h>.
3082 i_sysstatfs (i_sysstatfs.U):
3083 This variable conditionally defines the I_SYSSTATFS symbol,
3084 and indicates whether a C program should include <sys/statfs.h>.
3086 i_sysstatvfs (i_sysstatvfs.U):
3087 This variable conditionally defines the I_SYSSTATVFS symbol,
3088 and indicates whether a C program should include <sys/statvfs.h>.
3090 i_systime (i_time.U):
3091 This variable conditionally defines I_SYS_TIME, which indicates
3092 to the C program that it should include <sys/time.h>.
3094 i_systimek (i_time.U):
3095 This variable conditionally defines I_SYS_TIME_KERNEL, which
3096 indicates to the C program that it should include <sys/time.h>
3097 with KERNEL defined.
3099 i_systimes (i_systimes.U):
3100 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3101 whether a C program should include <sys/times.h>.
3103 i_systypes (i_systypes.U):
3104 This variable conditionally defines the I_SYS_TYPES symbol,
3105 and indicates whether a C program should include <sys/types.h>.
3107 i_sysuio (i_sysuio.U):
3108 This variable conditionally defines the I_SYSUIO symbol, and indicates
3109 whether a C program should include <sys/uio.h>.
3111 i_sysun (i_sysun.U):
3112 This variable conditionally defines I_SYS_UN, which indicates
3113 to the C program that it should include <sys/un.h> to get UNIX
3114 domain socket definitions.
3116 i_sysutsname (i_sysutsname.U):
3117 This variable conditionally defines the I_SYSUTSNAME symbol,
3118 and indicates whether a C program should include <sys/utsname.h>.
3120 i_sysvfs (i_sysvfs.U):
3121 This variable conditionally defines the I_SYSVFS symbol,
3122 and indicates whether a C program should include <sys/vfs.h>.
3124 i_syswait (i_syswait.U):
3125 This variable conditionally defines I_SYS_WAIT, which indicates
3126 to the C program that it should include <sys/wait.h>.
3128 i_termio (i_termio.U):
3129 This variable conditionally defines the I_TERMIO symbol, which
3130 indicates to the C program that it should include <termio.h> rather
3133 i_termios (i_termio.U):
3134 This variable conditionally defines the I_TERMIOS symbol, which
3135 indicates to the C program that the POSIX <termios.h> file is
3139 This variable conditionally defines I_TIME, which indicates
3140 to the C program that it should include <time.h>.
3142 i_unistd (i_unistd.U):
3143 This variable conditionally defines the I_UNISTD symbol, and indicates
3144 whether a C program should include <unistd.h>.
3146 i_ustat (i_ustat.U):
3147 This variable conditionally defines the I_USTAT symbol, and indicates
3148 whether a C program should include <ustat.h>.
3150 i_utime (i_utime.U):
3151 This variable conditionally defines the I_UTIME symbol, and indicates
3152 whether a C program should include <utime.h>.
3154 i_values (i_values.U):
3155 This variable conditionally defines the I_VALUES symbol, and indicates
3156 whether a C program may include <values.h> to get symbols like MAXLONG
3159 i_varargs (i_varhdr.U):
3160 This variable conditionally defines I_VARARGS, which indicates
3161 to the C program that it should include <varargs.h>.
3163 i_varhdr (i_varhdr.U):
3164 Contains the name of the header to be included to get va_dcl definition.
3165 Typically one of varargs.h or stdarg.h.
3167 i_vfork (i_vfork.U):
3168 This variable conditionally defines the I_VFORK symbol, and indicates
3169 whether a C program should include vfork.h.
3171 ignore_versioned_solibs (libs.U):
3172 This variable should be non-empty if non-versioned shared
3173 libraries (libfoo.so.x.y) are to be ignored (because they
3174 cannot be linked against).
3176 inc_version_list (inc_version_list.U):
3177 This variable specifies the list of subdirectories in over
3178 which perl.c:incpush() and lib/lib.pm will automatically
3179 search when adding directories to @INC. The elements in
3180 the list are separated by spaces. This is only useful
3181 if you have a perl library directory tree structured like the
3182 default one. See INSTALL for how this works. The versioned
3183 site_perl directory was introduced in 5.005, so that is the
3184 lowest possible value.
3186 This list includes architecture-dependent directories back to
3187 version $api_versionstring (e.g. 5.5.640) and
3188 architecture-independent directories all the way back to
3191 inc_version_list_init (inc_version_list.U):
3192 This variable holds the same list as inc_version_list, but
3193 each item is enclosed in double quotes and separated by commas,
3194 suitable for use in the PERL_INC_VERSION_LIST initialization.
3197 This variable must preceed the normal include path to get hte
3198 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3199 Value can be "" or "/bsd43" on mips.
3202 This variable is defined but not used by Configure.
3203 The value is a plain '' and is not useful.
3205 initialinstalllocation (bin.U):
3206 When userelocatableinc is true, this variable holds the location
3207 that make install should copy the perl binary to, with all the
3208 run-time relocatable paths calculated from this at install time.
3209 When used, it is initialised to the original value of binexp, and
3210 then binexp is set to '.../', as the other binaries are found
3211 relative to the perl binary.
3213 installarchlib (archlib.U):
3214 This variable is really the same as archlibexp but may differ on
3215 those systems using AFS. For extra portability, only this variable
3216 should be used in makefiles.
3219 This variable is the same as binexp unless AFS is running in which case
3220 the user is explicitely prompted for it. This variable should always
3221 be used in your makefiles for maximum portability.
3223 installhtml1dir (html1dir.U):
3224 This variable is really the same as html1direxp, unless you are
3225 using a different installprefix. For extra portability, you
3226 should only use this variable within your makefiles.
3228 installhtml3dir (html3dir.U):
3229 This variable is really the same as html3direxp, unless you are
3230 using a different installprefix. For extra portability, you
3231 should only use this variable within your makefiles.
3233 installman1dir (man1dir.U):
3234 This variable is really the same as man1direxp, unless you are using
3235 AFS in which case it points to the read/write location whereas
3236 man1direxp only points to the read-only access location. For extra
3237 portability, you should only use this variable within your makefiles.
3239 installman3dir (man3dir.U):
3240 This variable is really the same as man3direxp, unless you are using
3241 AFS in which case it points to the read/write location whereas
3242 man3direxp only points to the read-only access location. For extra
3243 portability, you should only use this variable within your makefiles.
3245 installprefix (installprefix.U):
3246 This variable holds the name of the directory below which
3247 "make install" will install the package. For most users, this
3248 is the same as prefix. However, it is useful for
3249 installing the software into a different (usually temporary)
3250 location after which it can be bundled up and moved somehow
3251 to the final location specified by prefix.
3253 installprefixexp (installprefix.U):
3254 This variable holds the full absolute path of installprefix
3255 with all ~-expansion done.
3257 installprivlib (privlib.U):
3258 This variable is really the same as privlibexp but may differ on
3259 those systems using AFS. For extra portability, only this variable
3260 should be used in makefiles.
3262 installscript (scriptdir.U):
3263 This variable is usually the same as scriptdirexp, unless you are on
3264 a system running AFS, in which case they may differ slightly. You
3265 should always use this variable within your makefiles for portability.
3267 installsitearch (sitearch.U):
3268 This variable is really the same as sitearchexp but may differ on
3269 those systems using AFS. For extra portability, only this variable
3270 should be used in makefiles.
3272 installsitebin (sitebin.U):
3273 This variable is usually the same as sitebinexp, unless you are on
3274 a system running AFS, in which case they may differ slightly. You
3275 should always use this variable within your makefiles for portability.
3277 installsitehtml1dir (sitehtml1dir.U):
3278 This variable is really the same as sitehtml1direxp, unless you are using
3279 AFS in which case it points to the read/write location whereas
3280 html1direxp only points to the read-only access location. For extra
3281 portability, you should only use this variable within your makefiles.
3283 installsitehtml3dir (sitehtml3dir.U):
3284 This variable is really the same as sitehtml3direxp, unless you are using
3285 AFS in which case it points to the read/write location whereas
3286 html3direxp only points to the read-only access location. For extra
3287 portability, you should only use this variable within your makefiles.
3289 installsitelib (sitelib.U):
3290 This variable is really the same as sitelibexp but may differ on
3291 those systems using AFS. For extra portability, only this variable
3292 should be used in makefiles.
3294 installsiteman1dir (siteman1dir.U):
3295 This variable is really the same as siteman1direxp, unless you are using
3296 AFS in which case it points to the read/write location whereas
3297 man1direxp only points to the read-only access location. For extra
3298 portability, you should only use this variable within your makefiles.
3300 installsiteman3dir (siteman3dir.U):
3301 This variable is really the same as siteman3direxp, unless you are using
3302 AFS in which case it points to the read/write location whereas
3303 man3direxp only points to the read-only access location. For extra
3304 portability, you should only use this variable within your makefiles.
3306 installsitescript (sitescript.U):
3307 This variable is usually the same as sitescriptexp, unless you are on
3308 a system running AFS, in which case they may differ slightly. You
3309 should always use this variable within your makefiles for portability.
3311 installstyle (installstyle.U):
3312 This variable describes the "style" of the perl installation.
3313 This is intended to be useful for tools that need to
3314 manipulate entire perl distributions. Perl itself doesn't use
3315 this to find its libraries -- the library directories are
3316 stored directly in Config.pm. Currently, there are only two
3317 styles: "lib" and "lib/perl5". The default library locations
3318 (e.g. privlib, sitelib) are either $prefix/lib or
3319 $prefix/lib/perl5. The former is useful if $prefix is a
3320 directory dedicated to perl (e.g. /opt/perl), while the latter
3321 is useful if $prefix is shared by many packages, e.g. if
3324 Unfortunately, while this "style" variable is used to set
3325 defaults for all three directory hierarchies (core, vendor, and
3326 site), there is no guarantee that the same style is actually
3327 appropriate for all those directories. For example, $prefix
3328 might be /opt/perl, but $siteprefix might be /usr/local.
3329 (Perhaps, in retrospect, the "lib" style should never have been
3330 supported, but it did seem like a nice idea at the time.)
3332 The situation is even less clear for tools such as MakeMaker
3333 that can be used to install additional modules into
3334 non-standard places. For example, if a user intends to install
3335 a module into a private directory (perhaps by setting PREFIX on
3336 the Makefile.PL command line), then there is no reason to
3337 assume that the Configure-time $installstyle setting will be
3338 relevant for that PREFIX.
3340 This may later be extended to include other information, so
3341 be careful with pattern-matching on the results.
3343 For compatibility with perl5.005 and earlier, the default
3344 setting is based on whether or not $prefix contains the string
3347 installusrbinperl (instubperl.U):
3348 This variable tells whether Perl should be installed also as
3349 /usr/bin/perl in addition to
3352 installvendorarch (vendorarch.U):
3353 This variable is really the same as vendorarchexp but may differ on
3354 those systems using AFS. For extra portability, only this variable
3355 should be used in makefiles.
3357 installvendorbin (vendorbin.U):
3358 This variable is really the same as vendorbinexp but may differ on
3359 those systems using AFS. For extra portability, only this variable
3360 should be used in makefiles.
3362 installvendorhtml1dir (vendorhtml1dir.U):
3363 This variable is really the same as vendorhtml1direxp but may differ on
3364 those systems using AFS. For extra portability, only this variable
3365 should be used in makefiles.
3367 installvendorhtml3dir (vendorhtml3dir.U):
3368 This variable is really the same as vendorhtml3direxp but may differ on
3369 those systems using AFS. For extra portability, only this variable
3370 should be used in makefiles.
3372 installvendorlib (vendorlib.U):
3373 This variable is really the same as vendorlibexp but may differ on
3374 those systems using AFS. For extra portability, only this variable
3375 should be used in makefiles.
3377 installvendorman1dir (vendorman1dir.U):
3378 This variable is really the same as vendorman1direxp but may differ on
3379 those systems using AFS. For extra portability, only this variable
3380 should be used in makefiles.
3382 installvendorman3dir (vendorman3dir.U):
3383 This variable is really the same as vendorman3direxp but may differ on
3384 those systems using AFS. For extra portability, only this variable
3385 should be used in makefiles.
3387 installvendorscript (vendorscript.U):
3388 This variable is really the same as vendorscriptexp but may differ on
3389 those systems using AFS. For extra portability, only this variable
3390 should be used in makefiles.
3392 intsize (intsize.U):
3393 This variable contains the value of the INTSIZE symbol, which
3394 indicates to the C program how many bytes there are in an int.
3396 issymlink (issymlink.U):
3397 This variable holds the test command to test for a symbolic link
3398 (if they are supported). Typical values include 'test -h' and
3401 ivdformat (perlxvf.U):
3402 This variable contains the format string used for printing
3403 a Perl IV as a signed decimal integer.
3406 This variable is the size of an IV in bytes.
3409 This variable contains the C type used for Perl's IV.
3411 known_extensions (Extensions.U):
3412 This variable holds a list of all XS extensions included in
3416 This variable is defined but not used by Configure.
3417 The value is a plain '' and is not useful.
3420 This variable indicates the program to be used to link
3421 libraries for dynamic loading. On some systems, it is 'ld'.
3422 On ELF systems, it should be $cc. Mostly, we'll try to respect
3423 the hint file setting.
3425 lddlflags (dlsrc.U):
3426 This variable contains any special flags that might need to be
3427 passed to $ld to create a shared library suitable for dynamic
3428 loading. It is up to the makefile to use it. For hpux, it
3429 should be '-b'. For sunos 4.1, it is empty.
3431 ldflags (ccflags.U):
3432 This variable contains any additional C loader flags desired by
3433 the user. It is up to the Makefile to use this.
3435 ldflags_uselargefiles (uselfs.U):
3436 This variable contains the loader flags needed by large file builds
3437 and added to ldflags by hints files.
3439 ldlibpthname (libperl.U):
3440 This variable holds the name of the shared library
3441 search path, often LD_LIBRARY_PATH. To get an empty
3442 string, the hints file must set this to 'none'.
3445 This variable is used internally by Configure to determine the
3446 full pathname (if any) of the less program. After Configure runs,
3447 the value is reset to a plain "less" and is not useful.
3450 This is an old synonym for _a.
3453 This variable contains the location of the C library.
3455 libperl (libperl.U):
3456 The perl executable is obtained by linking perlmain.c with
3457 libperl, any static extensions (usually just DynaLoader),
3458 and any other libraries needed on this system. libperl
3459 is usually libperl.a, but can also be libperl.so.xxx if
3460 the user wishes to build a perl executable with a shared
3464 This variable holds the general path (space-separated) used to find
3465 libraries. It is intended to be used by other units.
3468 This variable holds the additional libraries we want to use.
3469 It is up to the Makefile to deal with it. The list can be empty.
3472 This variable holds the directory names aka dirnames of the libraries
3473 we found and accepted, duplicates are removed.
3476 This variable holds the filenames aka basenames of the libraries
3477 we found and accepted.
3480 This variable holds the full pathnames of the libraries
3481 we found and accepted.
3484 This variable holds the directory names probed for libraries.
3486 libswanted (Myinit.U):
3487 This variable holds a list of all the libraries we want to
3488 search. The order is chosen to pick up the c library
3489 ahead of ucb or bsd libraries for SVR4.
3491 libswanted_uselargefiles (uselfs.U):
3492 This variable contains the libraries needed by large file builds
3493 and added to ldflags by hints files. It is a space separated list
3494 of the library names without the "lib" prefix or any suffix, just
3498 This variable is defined but not used by Configure.
3499 The value is a plain '' and is not useful.
3502 This variable is defined but not used by Configure.
3503 The value is a plain '' and is not useful.
3505 lkflags (ccflags.U):
3506 This variable contains any additional C partial linker flags desired by
3507 the user. It is up to the Makefile to use this.
3510 This variable is used internally by Configure to determine the
3511 full pathname (if any) of the ln program. After Configure runs,
3512 the value is reset to a plain "ln" and is not useful.
3515 This variable holds the name of the command to make
3516 symbolic links (if they are supported). It can be used
3517 in the Makefile. It is either 'ln -s' or 'ln'
3519 localtime_r_proto (d_localtime_r.U):
3520 This variable encodes the prototype of localtime_r.
3521 It is zero if d_localtime_r is undef, and one of the
3522 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3525 locincpth (ccflags.U):
3526 This variable contains a list of additional directories to be
3527 searched by the compiler. The appropriate '-I' directives will
3528 be added to ccflags. This is intended to simplify setting
3529 local directories from the Configure command line.
3530 It's not much, but it parallels the loclibpth stuff in libpth.U.
3532 loclibpth (libpth.U):
3533 This variable holds the paths (space-separated) used to find local
3534 libraries. It is prepended to libpth, and is intended to be easily
3535 set from the command line.
3537 longdblsize (d_longdbl.U):
3538 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3539 indicates to the C program how many bytes there are in a long double,
3540 if this system supports long doubles.
3542 longlongsize (d_longlong.U):
3543 This variable contains the value of the LONGLONGSIZE symbol, which
3544 indicates to the C program how many bytes there are in a long long,
3545 if this system supports long long.
3547 longsize (intsize.U):
3548 This variable contains the value of the LONGSIZE symbol, which
3549 indicates to the C program how many bytes there are in a long.
3552 This variable is defined but not used by Configure.
3553 The value is a plain '' and is not useful.
3556 This variable is defined but not used by Configure.
3557 The value is a plain '' and is not useful.
3560 This variable is used internally by Configure to determine the
3561 full pathname (if any) of the ls program. After Configure runs,
3562 the value is reset to a plain "ls" and is not useful.
3564 lseeksize (lseektype.U):
3565 This variable defines lseektype to be something like off_t, long,
3566 or whatever type is used to declare lseek offset's type in the
3567 kernel (which also appears to be lseek's return type).
3569 lseektype (lseektype.U):
3570 This variable defines lseektype to be something like off_t, long,
3571 or whatever type is used to declare lseek offset's type in the
3572 kernel (which also appears to be lseek's return type).
3575 This variable indicates that the Misc Attribute Definition code is to
3579 If the Misc Attribute Decoration is to be compiled, this variable is
3580 set to the name of the extra header files to be used, else it is ''
3583 If the Misc Attribute Decoration is to be compiled, this variable is
3584 set to the name of the extra object files to be used, else it is ''
3587 If the Misc Attribute Decoration is to be compiled, this variable is
3588 set to the name of the extra C source files to be used, else it is ''
3591 This variable is defined but not used by Configure.
3592 The value is a plain '' and is not useful.
3595 This variable is defined but not used by Configure.
3596 The value is a plain '' and is not useful.
3599 This variable is used internally by Configure to determine the
3600 full pathname (if any) of the make program. After Configure runs,
3601 the value is reset to a plain "make" and is not useful.
3603 make_set_make (make.U):
3604 Some versions of 'make' set the variable MAKE. Others do not.
3605 This variable contains the string to be included in Makefile.SH
3606 so that MAKE is set if needed, and not if not needed.
3607 Possible values are:
3609 make_set_make='#' # If your make program handles this for you,
3611 make_set_make="MAKE=$make" # if it doesn't.
3613 This uses a comment character to distinguish a
3614 'set' value (from a previous config.sh or Configure '-D' option)
3615 from an uncomputed value.
3617 mallocobj (mallocsrc.U):
3618 This variable contains the name of the malloc.o that this package
3619 generates, if that malloc.o is preferred over the system malloc.
3620 Otherwise the value is null. This variable is intended for generating
3621 Makefiles. See mallocsrc.
3623 mallocsrc (mallocsrc.U):
3624 This variable contains the name of the malloc.c that comes with
3625 the package, if that malloc.c is preferred over the system malloc.
3626 Otherwise the value is null. This variable is intended for generating
3629 malloctype (mallocsrc.U):
3630 This variable contains the kind of ptr returned by malloc and realloc.
3632 man1dir (man1dir.U):
3633 This variable contains the name of the directory in which manual
3634 source pages are to be put. It is the responsibility of the
3635 Makefile.SH to get the value of this into the proper command.
3636 You must be prepared to do the ~name expansion yourself.
3638 man1direxp (man1dir.U):
3639 This variable is the same as the man1dir variable, but is filename
3640 expanded at configuration time, for convenient use in makefiles.
3642 man1ext (man1dir.U):
3643 This variable contains the extension that the manual page should
3644 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3647 man3dir (man3dir.U):
3648 This variable contains the name of the directory in which manual
3649 source pages are to be put. It is the responsibility of the
3650 Makefile.SH to get the value of this into the proper command.
3651 You must be prepared to do the ~name expansion yourself.
3653 man3direxp (man3dir.U):
3654 This variable is the same as the man3dir variable, but is filename
3655 expanded at configuration time, for convenient use in makefiles.
3657 man3ext (man3dir.U):
3658 This variable contains the extension that the manual page should
3659 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3663 This variable is used internally by Configure to determine the
3664 full pathname (if any) of the Mcc program. After Configure runs,
3665 the value is reset to a plain "Mcc" and is not useful.
3667 mips_type (usrinc.U):
3668 This variable holds the environment type for the mips system.
3669 Possible values are "BSD 4.3" and "System V".
3671 mistrustnm (Csym.U):
3672 This variable can be used to establish a fallthrough for the cases
3673 where nm fails to find a symbol. If usenm is false or usenm is true
3674 and mistrustnm is false, this variable has no effect. If usenm is true
3675 and mistrustnm is "compile", a test program will be compiled to try to
3676 find any symbol that can't be located via nm lookup. If mistrustnm is
3677 "run", the test program will be run as well as being compiled.
3680 This variable is used internally by Configure to determine the
3681 full pathname (if any) of the mkdir program. After Configure runs,
3682 the value is reset to a plain "mkdir" and is not useful.
3684 mmaptype (d_mmap.U):
3685 This symbol contains the type of pointer returned by mmap()
3686 (and simultaneously the type of the first argument).
3687 It can be 'void *' or 'caddr_t'.
3689 modetype (modetype.U):
3690 This variable defines modetype to be something like mode_t,
3691 int, unsigned short, or whatever type is used to declare file
3692 modes for system calls.
3695 This variable is used internally by Configure to determine the
3696 full pathname (if any) of the more program. After Configure runs,
3697 the value is reset to a plain "more" and is not useful.
3699 multiarch (multiarch.U):
3700 This variable conditionally defines the MULTIARCH symbol
3701 which signifies the presence of multiplatform files.
3702 This is normally set by hints files.
3705 This variable is defined but not used by Configure.
3706 The value is a plain '' and is not useful.
3708 myarchname (archname.U):
3709 This variable holds the architecture name computed by Configure in
3710 a previous run. It is not intended to be perused by any user and
3711 should never be set in a hint file.
3713 mydomain (myhostname.U):
3714 This variable contains the eventual value of the MYDOMAIN symbol,
3715 which is the domain of the host the program is going to run on.
3716 The domain must be appended to myhostname to form a complete host name.
3717 The dot comes with mydomain, and need not be supplied by the program.
3719 myhostname (myhostname.U):
3720 This variable contains the eventual value of the MYHOSTNAME symbol,
3721 which is the name of the host the program is going to run on.
3722 The domain is not kept with hostname, but must be gotten from mydomain.
3723 The dot comes with mydomain, and need not be supplied by the program.
3725 myuname (Oldconfig.U):
3726 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3727 pseudo variables assignments in the output are stripped, thank you. The
3728 whole thing is then lower-cased.
3731 This variable contains the '-n' flag if that is what causes the echo
3732 command to suppress newline. Otherwise it is null. Correct usage is
3733 $echo $n "prompt for a question: $c".
3735 need_va_copy (need_va_copy.U):
3736 This symbol, if defined, indicates that the system stores
3737 the variable argument list datatype, va_list, in a format
3738 that cannot be copied by simple assignment, so that some
3739 other means must be used when copying is required.
3740 As such systems vary in their provision (or non-provision)
3741 of copying mechanisms, handy.h defines a platform-
3742 independent macro, Perl_va_copy(src, dst), to do the job.
3744 netdb_hlen_type (netdbtype.U):
3745 This variable holds the type used for the 2nd argument to
3746 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3747 This is only useful if you have gethostbyaddr(), naturally.
3749 netdb_host_type (netdbtype.U):
3750 This variable holds the type used for the 1st argument to
3751 gethostbyaddr(). Usually, this is char * or void *, possibly
3752 with or without a const prefix.
3753 This is only useful if you have gethostbyaddr(), naturally.
3755 netdb_name_type (netdbtype.U):
3756 This variable holds the type used for the argument to
3757 gethostbyname(). Usually, this is char * or const char *.
3758 This is only useful if you have gethostbyname(), naturally.
3760 netdb_net_type (netdbtype.U):
3761 This variable holds the type used for the 1st argument to
3762 getnetbyaddr(). Usually, this is int or long.
3763 This is only useful if you have getnetbyaddr(), naturally.
3766 This variable is used internally by Configure to determine the
3767 full pathname (if any) of the nm program. After Configure runs,
3768 the value is reset to a plain "nm" and is not useful.
3771 This variable holds the options that may be necessary for nm.
3773 nm_so_opt (usenm.U):
3774 This variable holds the options that may be necessary for nm
3775 to work on a shared library but that can not be used on an
3776 archive library. Currently, this is only used by Linux, where
3777 nm --dynamic is *required* to get symbols from an ELF library which
3778 has been stripped, but nm --dynamic is *fatal* on an archive library.
3779 Maybe Linux should just always set usenm=false.
3781 nonxs_ext (Extensions.U):
3782 This variable holds a list of all non-xs extensions included
3783 in the package. All of them will be built.
3786 This variable is used internally by Configure to determine the
3787 full pathname (if any) of the nroff program. After Configure runs,
3788 the value is reset to a plain "nroff" and is not useful.
3790 nv_preserves_uv_bits (perlxv.U):
3791 This variable indicates how many of bits type uvtype
3792 a variable nvtype can preserve.
3794 nveformat (perlxvf.U):
3795 This variable contains the format string used for printing
3796 a Perl NV using %e-ish floating point format.
3798 nvEUformat (perlxvf.U):
3799 This variable contains the format string used for printing
3800 a Perl NV using %E-ish floating point format.
3802 nvfformat (perlxvf.U):
3803 This variable confains the format string used for printing
3804 a Perl NV using %f-ish floating point format.
3806 nvFUformat (perlxvf.U):
3807 This variable confains the format string used for printing
3808 a Perl NV using %F-ish floating point format.
3810 nvgformat (perlxvf.U):
3811 This variable contains the format string used for printing
3812 a Perl NV using %g-ish floating point format.
3814 nvGUformat (perlxvf.U):
3815 This variable contains the format string used for printing
3816 a Perl NV using %G-ish floating point format.
3819 This variable is the size of an NV in bytes.
3822 This variable contains the C type used for Perl's NV.
3824 o_nonblock (nblock_io.U):
3825 This variable bears the symbol value to be used during open() or fcntl()
3826 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3827 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3828 but that is only supported by some devices.
3831 This is an old synonym for _o.
3833 old_pthread_create_joinable (d_pthrattrj.U):
3834 This variable defines the constant to use for creating joinable
3835 (aka undetached) pthreads. Unused if pthread.h defines
3836 PTHREAD_CREATE_JOINABLE. If used, possible values are
3837 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3839 optimize (ccflags.U):
3840 This variable contains any optimizer/debugger flag that should be used.
3841 It is up to the Makefile to use it.
3843 orderlib (orderlib.U):
3844 This variable is "true" if the components of libraries must be ordered
3845 (with `lorder $* | tsort`) before placing them in an archive. Set to
3846 "false" if ranlib or ar can generate random libraries.
3848 osname (Oldconfig.U):
3849 This variable contains the operating system name (e.g. sunos,
3850 solaris, hpux, etc.). It can be useful later on for setting
3851 defaults. Any spaces are replaced with underscores. It is set
3852 to a null string if we can't figure it out.
3854 osvers (Oldconfig.U):
3855 This variable contains the operating system version (e.g.
3856 4.1.3, 5.2, etc.). It is primarily used for helping select
3857 an appropriate hints file, but might be useful elsewhere for
3858 setting defaults. It is set to '' if we can't figure it out.
3859 We try to be flexible about how much of the version number
3860 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3861 same for this package, hints files might just be os_4.0 or
3862 os_4.1, etc., not keeping separate files for each little release.
3864 otherlibdirs (otherlibdirs.U):
3865 This variable contains a colon-separated set of paths for the perl
3866 binary to search for additional library files or modules.
3867 These directories will be tacked to the end of @INC.
3868 Perl will automatically search below each path for version-
3869 and architecture-specific directories. See inc_version_list
3871 A value of ' ' means 'none' and is used to preserve this value
3872 for the next run through Configure.
3874 package (package.U):
3875 This variable contains the name of the package being constructed.
3876 It is primarily intended for the use of later Configure units.
3879 This variable contains the name of the preferred pager on the system.
3880 Usual values are (the full pathnames of) more, less, pg, or cat.
3883 This variable contains a command that produces the text of the
3884 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3885 "ypcat passwd" when NIS is used.
3886 On some systems, such as os390, there may be no equivalent
3887 command, in which case this variable is unset.
3889 patchlevel (patchlevel.U):
3890 The patchlevel level of this package.
3891 The value of patchlevel comes from the patchlevel.h file.
3892 In a version number such as 5.6.1, this is the "6".
3893 In patchlevel.h, this is referred to as "PERL_VERSION".
3896 This is an old synonym for p_ in Head.U, the character
3897 used to separate elements in the command shell search PATH.
3900 This variable is defined but not used by Configure.
3901 The value is a plain '' and is not useful.
3904 This variable contains the full path (if any) to a previously
3905 installed perl5.005 or later suitable for running the script
3906 to determine inc_version_list.
3908 PERL_API_REVISION (patchlevel.h):
3909 This number describes the earliest compatible PERL_REVISION of
3910 Perl ("compatibility" here being defined as sufficient binary/API
3911 compatibility to run XS code built with the older version).
3912 Normally this does not change across maintenance releases.
3913 Please read the comment in patchlevel.h.
3915 PERL_API_SUBVERSION (patchlevel.h):
3916 This number describes the earliest compatible PERL_SUBVERSION of
3917 Perl ("compatibility" here being defined as sufficient binary/API
3918 compatibility to run XS code built with the older version).
3919 Normally this does not change across maintenance releases.
3920 Please read the comment in patchlevel.h.
3922 PERL_API_VERSION (patchlevel.h):
3923 This number describes the earliest compatible PERL_VERSION of
3924 Perl ("compatibility" here being defined as sufficient binary/API
3925 compatibility to run XS code built with the older version).
3926 Normally this does not change across maintenance releases.
3927 Please read the comment in patchlevel.h.
3929 PERL_CONFIG_SH (Oldsyms.U):
3930 This is set to 'true' in config.sh so that a shell script
3931 sourcing config.sh can tell if it has been sourced already.
3933 PERL_PATCHLEVEL (Oldsyms.U):
3934 This symbol reflects the patchlevel, if available. Will usually
3935 come from the .patch file, which is available when the perl
3936 source tree was fetched with rsync.
3938 perl_patchlevel (patchlevel.U):
3939 This is the Perl patch level, a numeric change identifier,
3940 as defined by whichever source code maintenance system
3941 is used to maintain the patches; currently Perforce.
3942 It does not correlate with the Perl version numbers or
3943 the maintenance versus development dichotomy except
3944 by also being increasing.
3946 PERL_REVISION (Oldsyms.U):
3947 In a Perl version number such as 5.6.2, this is the 5.
3948 This value is manually set in patchlevel.h
3950 PERL_SUBVERSION (Oldsyms.U):
3951 In a Perl version number such as 5.6.2, this is the 2.
3952 Values greater than 50 represent potentially unstable
3953 development subversions.
3954 This value is manually set in patchlevel.h
3956 PERL_VERSION (Oldsyms.U):
3957 In a Perl version number such as 5.6.2, this is the 6.
3958 This value is manually set in patchlevel.h
3960 perladmin (perladmin.U):
3961 Electronic mail address of the perl5 administrator.
3964 The list of libraries needed by Perl only (any libraries needed
3965 by extensions only will by dropped, if using dynamic loading).
3967 perlpath (perlpath.U):
3968 This variable contains the eventual value of the PERLPATH symbol,
3969 which contains the name of the perl interpreter to be used in
3970 shell scripts and in the "eval 'exec'" idiom. This variable is
3971 not necessarily the pathname of the file containing the perl
3972 interpreter; you must append the executable extension (_exe) if
3973 it is not already present. Note that Perl code that runs during
3974 the Perl build process cannot reference this variable, as Perl
3975 may not have been installed, or even if installed, may be a
3976 different version of Perl.
3979 This variable is used internally by Configure to determine the
3980 full pathname (if any) of the pg program. After Configure runs,
3981 the value is reset to a plain "pg" and is not useful.
3983 phostname (myhostname.U):
3984 This variable contains the eventual value of the PHOSTNAME symbol,
3985 which is a command that can be fed to popen() to get the host name.
3986 The program should probably not presume that the domain is or isn't
3989 pidtype (pidtype.U):
3990 This variable defines PIDTYPE to be something like pid_t, int,
3991 ushort, or whatever type is used to declare process ids in the kernel.
3994 Holds the private path used by Configure to find out the libraries.
3995 Its value is prepend to libpth. This variable takes care of special
3996 machines, like the mips. Usually, it should be empty.
3999 This variable is defined but not used by Configure.
4000 The value is a plain '' and is not useful.
4003 This variable is defined but not used by Configure.
4004 The value is a plain '' and is not useful.
4007 This variable holds the name of the directory below which the
4008 user will install the package. Usually, this is /usr/local, and
4009 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4010 man pages in /usr/local/man, etc. It is only used to set defaults
4011 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4013 prefixexp (prefix.U):
4014 This variable holds the full absolute path of the directory below
4015 which the user will install the package. Derived from prefix.
4017 privlib (privlib.U):
4018 This variable contains the eventual value of the PRIVLIB symbol,
4019 which is the name of the private library for this package. It may
4020 have a ~ on the front. It is up to the makefile to eventually create
4021 this directory while performing installation (with ~ substitution).
4023 privlibexp (privlib.U):
4024 This variable is the ~name expanded version of privlib, so that you
4025 may use it directly in Makefiles or shell scripts.
4027 procselfexe (d_procselfexe.U):
4028 If d_procselfexe is defined, $procselfexe is the filename
4029 of the symbolic link pointing to the absolute pathname of
4030 the executing program.
4032 prototype (prototype.U):
4033 This variable holds the eventual value of CAN_PROTOTYPE, which
4034 indicates the C compiler can handle funciton prototypes.
4036 ptrsize (ptrsize.U):
4037 This variable contains the value of the PTRSIZE symbol, which
4038 indicates to the C program how many bytes there are in a pointer.
4040 quadkind (quadtype.U):
4041 This variable, if defined, encodes the type of a quad:
4042 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4044 quadtype (quadtype.U):
4045 This variable defines Quad_t to be something like long, int,
4046 long long, int64_t, or whatever type is used for 64-bit integers.
4048 randbits (randfunc.U):
4049 Indicates how many bits are produced by the function used to
4050 generate normalized random numbers.
4052 randfunc (randfunc.U):
4053 Indicates the name of the random number function to use.
4054 Values include drand48, random, and rand. In C programs,
4055 the 'Drand01' macro is defined to generate uniformly distributed
4056 random numbers over the range [0., 1.[ (see drand01 and nrand).
4058 random_r_proto (d_random_r.U):
4059 This variable encodes the prototype of random_r.
4060 It is zero if d_random_r is undef, and one of the
4061 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4064 randseedtype (randfunc.U):
4065 Indicates the type of the argument of the seedfunc.
4067 ranlib (orderlib.U):
4068 This variable is set to the pathname of the ranlib program, if it is
4069 needed to generate random libraries. Set to ":" if ar can generate
4070 random libraries or if random libraries are not supported
4072 rd_nodata (nblock_io.U):
4073 This variable holds the return code from read() when no data is
4074 present. It should be -1, but some systems return 0 when O_NDELAY is
4075 used, which is a shame because you cannot make the difference between
4076 no data and an EOF.. Sigh!
4078 readdir64_r_proto (d_readdir64_r.U):
4079 This variable encodes the prototype of readdir64_r.
4080 It is zero if d_readdir64_r is undef, and one of the
4081 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4084 readdir_r_proto (d_readdir_r.U):
4085 This variable encodes the prototype of readdir_r.
4086 It is zero if d_readdir_r is undef, and one of the
4087 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4090 revision (patchlevel.U):
4091 The value of revision comes from the patchlevel.h file.
4092 In a version number such as 5.6.1, this is the "5".
4093 In patchlevel.h, this is referred to as "PERL_REVISION".
4096 This variable is used internally by Configure to determine the
4097 full pathname (if any) of the rm program. After Configure runs,
4098 the value is reset to a plain "rm" and is not useful.
4101 This variable is defined but not used by Configure.
4102 The value is a plain '' and is not useful.
4105 This variable contains the command used by Configure
4106 to copy and execute a cross-compiled executable in the
4107 target host. Useful and available only during Perl build.
4108 Empty string '' if not cross-compiling.
4111 This variable contains 'true' or 'false' depending whether the
4112 nm extraction should be performed or not, according to the value
4113 of usenm and the flags on the Configure command line.
4115 sched_yield (d_pthread_y.U):
4116 This variable defines the way to yield the execution
4117 of the current thread.
4119 scriptdir (scriptdir.U):
4120 This variable holds the name of the directory in which the user wants
4121 to put publicly scripts for the package in question. It is either
4122 the same directory as for binaries, or a special one that can be
4123 mounted across different architectures, like /usr/share. Programs
4124 must be prepared to deal with ~name expansion.
4126 scriptdirexp (scriptdir.U):
4127 This variable is the same as scriptdir, but is filename expanded
4128 at configuration time, for programs not wanting to bother with it.
4131 This variable is used internally by Configure to determine the
4132 full pathname (if any) of the sed program. After Configure runs,
4133 the value is reset to a plain "sed" and is not useful.
4135 seedfunc (randfunc.U):
4136 Indicates the random number generating seed function.
4137 Values include srand48, srandom, and srand.
4139 selectminbits (selectminbits.U):
4140 This variable holds the minimum number of bits operated by select.
4141 That is, if you do select(n, ...), how many bits at least will be
4142 cleared in the masks if some activity is detected. Usually this
4143 is either n or 32*ceil(n/32), especially many little-endians do
4144 the latter. This is only useful if you have select(), naturally.
4146 selecttype (selecttype.U):
4147 This variable holds the type used for the 2nd, 3rd, and 4th
4148 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4149 is defined, and 'int *' otherwise. This is only useful if you
4150 have select(), naturally.
4153 This variable is defined but not used by Configure.
4154 The value is a plain '' and is not useful.
4156 setgrent_r_proto (d_setgrent_r.U):
4157 This variable encodes the prototype of setgrent_r.
4158 It is zero if d_setgrent_r is undef, and one of the
4159 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4162 sethostent_r_proto (d_sethostent_r.U):
4163 This variable encodes the prototype of sethostent_r.
4164 It is zero if d_sethostent_r is undef, and one of the
4165 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4168 setlocale_r_proto (d_setlocale_r.U):
4169 This variable encodes the prototype of setlocale_r.
4170 It is zero if d_setlocale_r is undef, and one of the
4171 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4174 setnetent_r_proto (d_setnetent_r.U):
4175 This variable encodes the prototype of setnetent_r.
4176 It is zero if d_setnetent_r is undef, and one of the
4177 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4180 setprotoent_r_proto (d_setprotoent_r.U):
4181 This variable encodes the prototype of setprotoent_r.
4182 It is zero if d_setprotoent_r is undef, and one of the
4183 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4186 setpwent_r_proto (d_setpwent_r.U):
4187 This variable encodes the prototype of setpwent_r.
4188 It is zero if d_setpwent_r is undef, and one of the
4189 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4192 setservent_r_proto (d_setservent_r.U):
4193 This variable encodes the prototype of setservent_r.
4194 It is zero if d_setservent_r is undef, and one of the
4195 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4199 This variable contains the full pathname of the shell used
4200 on this system to execute Bourne shell scripts. Usually, this will be
4201 /bin/sh, though it's possible that some systems will have /bin/ksh,
4202 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4204 This unit comes before Options.U, so you can't set sh with a '-D'
4205 option, though you can override this (and startsh)
4206 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4209 This variable is defined but not used by Configure.
4210 The value is a plain '' and is not useful.
4212 sharpbang (spitshell.U):
4213 This variable contains the string #! if this system supports that
4216 shmattype (d_shmat.U):
4217 This symbol contains the type of pointer returned by shmat().
4218 It can be 'void *' or 'char *'.
4220 shortsize (intsize.U):
4221 This variable contains the value of the SHORTSIZE symbol which
4222 indicates to the C program how many bytes there are in a short.
4224 shrpenv (libperl.U):
4225 If the user builds a shared libperl.so, then we need to tell the
4226 'perl' executable where it will be able to find the installed libperl.so.
4227 One way to do this on some systems is to set the environment variable
4228 LD_RUN_PATH to the directory that will be the final location of the
4229 shared libperl.so. The makefile can use this with something like
4230 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4232 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4235 See the main perl Makefile.SH for actual working usage.
4236 Alternatively, we might be able to use a command line option such
4237 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4238 $archlibexp/CORE (Linux).
4240 shsharp (spitshell.U):
4241 This variable tells further Configure units whether your sh can
4244 sig_count (sig_name.U):
4245 This variable holds a number larger than the largest valid
4246 signal number. This is usually the same as the NSIG macro.
4248 sig_name (sig_name.U):
4249 This variable holds the signal names, space separated. The leading
4250 SIG in signal name is removed. A ZERO is prepended to the list.
4251 This is currently not used, sig_name_init is used instead.
4253 sig_name_init (sig_name.U):
4254 This variable holds the signal names, enclosed in double quotes and
4255 separated by commas, suitable for use in the SIG_NAME definition
4256 below. A "ZERO" is prepended to the list, and the list is
4257 terminated with a plain 0. The leading SIG in signal names
4258 is removed. See sig_num.
4260 sig_num (sig_name.U):
4261 This variable holds the signal numbers, space separated. A ZERO is
4262 prepended to the list (corresponding to the fake SIGZERO).
4263 Those numbers correspond to the value of the signal listed
4264 in the same place within the sig_name list.
4265 This is currently not used, sig_num_init is used instead.
4267 sig_num_init (sig_name.U):
4268 This variable holds the signal numbers, enclosed in double quotes and
4269 separated by commas, suitable for use in the SIG_NUM definition
4270 below. A "ZERO" is prepended to the list, and the list is
4271 terminated with a plain 0.
4273 sig_size (sig_name.U):
4274 This variable contains the number of elements of the sig_name
4277 signal_t (d_voidsig.U):
4278 This variable holds the type of the signal handler (void or int).
4280 sitearch (sitearch.U):
4281 This variable contains the eventual value of the SITEARCH symbol,
4282 which is the name of the private library for this package. It may
4283 have a ~ on the front. It is up to the makefile to eventually create
4284 this directory while performing installation (with ~ substitution).
4285 The standard distribution will put nothing in this directory.
4286 After perl has been installed, users may install their own local
4287 architecture-dependent modules in this directory with
4288 MakeMaker Makefile.PL
4289 or equivalent. See INSTALL for details.
4291 sitearchexp (sitearch.U):
4292 This variable is the ~name expanded version of sitearch, so that you
4293 may use it directly in Makefiles or shell scripts.
4295 sitebin (sitebin.U):
4296 This variable holds the name of the directory in which the user wants
4297 to put add-on publicly executable files for the package in question. It
4298 is most often a local directory such as /usr/local/bin. Programs using
4299 this variable must be prepared to deal with ~name substitution.
4300 The standard distribution will put nothing in this directory.
4301 After perl has been installed, users may install their own local
4302 executables in this directory with
4303 MakeMaker Makefile.PL
4304 or equivalent. See INSTALL for details.
4306 sitebinexp (sitebin.U):
4307 This is the same as the sitebin variable, but is filename expanded at
4308 configuration time, for use in your makefiles.
4310 sitehtml1dir (sitehtml1dir.U):
4311 This variable contains the name of the directory in which site-specific
4312 html source pages are to be put. It is the responsibility of the
4313 Makefile.SH to get the value of this into the proper command.
4314 You must be prepared to do the ~name expansion yourself.
4315 The standard distribution will put nothing in this directory.
4316 After perl has been installed, users may install their own local
4317 html pages in this directory with
4318 MakeMaker Makefile.PL
4319 or equivalent. See INSTALL for details.
4321 sitehtml1direxp (sitehtml1dir.U):
4322 This variable is the same as the sitehtml1dir variable, but is filename
4323 expanded at configuration time, for convenient use in makefiles.
4325 sitehtml3dir (sitehtml3dir.U):
4326 This variable contains the name of the directory in which site-specific
4327 library html source pages are to be put. It is the responsibility of the
4328 Makefile.SH to get the value of this into the proper command.
4329 You must be prepared to do the ~name expansion yourself.
4330 The standard distribution will put nothing in this directory.
4331 After perl has been installed, users may install their own local
4332 library html pages in this directory with
4333 MakeMaker Makefile.PL
4334 or equivalent. See INSTALL for details.
4336 sitehtml3direxp (sitehtml3dir.U):
4337 This variable is the same as the sitehtml3dir variable, but is filename
4338 expanded at configuration time, for convenient use in makefiles.
4340 sitelib (sitelib.U):
4341 This variable contains the eventual value of the SITELIB symbol,
4342 which is the name of the private library for this package. It may
4343 have a ~ on the front. It is up to the makefile to eventually create
4344 this directory while performing installation (with ~ substitution).
4345 The standard distribution will put nothing in this directory.
4346 After perl has been installed, users may install their own local
4347 architecture-independent modules in this directory with
4348 MakeMaker Makefile.PL
4349 or equivalent. See INSTALL for details.
4351 sitelib_stem (sitelib.U):
4352 This variable is $sitelibexp with any trailing version-specific component
4353 removed. The elements in inc_version_list (inc_version_list.U) can
4354 be tacked onto this variable to generate a list of directories to search.
4356 sitelibexp (sitelib.U):
4357 This variable is the ~name expanded version of sitelib, so that you
4358 may use it directly in Makefiles or shell scripts.
4360 siteman1dir (siteman1dir.U):
4361 This variable contains the name of the directory in which site-specific
4362 manual source pages are to be put. It is the responsibility of the
4363 Makefile.SH to get the value of this into the proper command.
4364 You must be prepared to do the ~name expansion yourself.
4365 The standard distribution will put nothing in this directory.
4366 After perl has been installed, users may install their own local
4367 man1 pages in this directory with
4368 MakeMaker Makefile.PL
4369 or equivalent. See INSTALL for details.
4371 siteman1direxp (siteman1dir.U):
4372 This variable is the same as the siteman1dir variable, but is filename
4373 expanded at configuration time, for convenient use in makefiles.
4375 siteman3dir (siteman3dir.U):
4376 This variable contains the name of the directory in which site-specific
4377 library man source pages are to be put. It is the responsibility of the
4378 Makefile.SH to get the value of this into the proper command.
4379 You must be prepared to do the ~name expansion yourself.
4380 The standard distribution will put nothing in this directory.
4381 After perl has been installed, users may install their own local
4382 man3 pages in this directory with
4383 MakeMaker Makefile.PL
4384 or equivalent. See INSTALL for details.
4386 siteman3direxp (siteman3dir.U):
4387 This variable is the same as the siteman3dir variable, but is filename
4388 expanded at configuration time, for convenient use in makefiles.
4390 siteprefix (siteprefix.U):
4391 This variable holds the full absolute path of the directory below
4392 which the user will install add-on packages.
4393 See INSTALL for usage and examples.
4395 siteprefixexp (siteprefix.U):
4396 This variable holds the full absolute path of the directory below
4397 which the user will install add-on packages. Derived from siteprefix.
4399 sitescript (sitescript.U):
4400 This variable holds the name of the directory in which the user wants
4401 to put add-on publicly executable files for the package in question. It
4402 is most often a local directory such as /usr/local/bin. Programs using
4403 this variable must be prepared to deal with ~name substitution.
4404 The standard distribution will put nothing in this directory.
4405 After perl has been installed, users may install their own local
4406 scripts in this directory with
4407 MakeMaker Makefile.PL
4408 or equivalent. See INSTALL for details.
4410 sitescriptexp (sitescript.U):
4411 This is the same as the sitescript variable, but is filename expanded at
4412 configuration time, for use in your makefiles.
4414 sizesize (sizesize.U):
4415 This variable contains the size of a sizetype in bytes.
4417 sizetype (sizetype.U):
4418 This variable defines sizetype to be something like size_t,
4419 unsigned long, or whatever type is used to declare length
4420 parameters for string functions.
4423 This variable is defined but not used by Configure.
4424 The value is a plain '' and is not useful.
4427 This variable is defined but not used by Configure.
4428 The value is a plain '' and is not useful.
4431 This variable holds the extension used to identify shared libraries
4432 (also known as shared objects) on the system. Usually set to 'so'.
4434 sockethdr (d_socket.U):
4435 This variable has any cpp '-I' flags needed for socket support.
4437 socketlib (d_socket.U):
4438 This variable has the names of any libraries needed for socket support.
4440 socksizetype (socksizetype.U):
4441 This variable holds the type used for the size argument
4442 for various socket calls like accept. Usual values include
4443 socklen_t, size_t, and int.
4446 This variable is used internally by Configure to determine the
4447 full pathname (if any) of the sort program. After Configure runs,
4448 the value is reset to a plain "sort" and is not useful.
4450 spackage (package.U):
4451 This variable contains the name of the package being constructed,
4452 with the first letter uppercased, i.e. suitable for starting
4455 spitshell (spitshell.U):
4456 This variable contains the command necessary to spit out a runnable
4457 shell on this system. It is either cat or a grep '-v' for # comments.
4459 sPRId64 (quadfio.U):
4460 This variable, if defined, contains the string used by stdio to
4461 format 64-bit decimal numbers (format 'd') for output.
4463 sPRIeldbl (longdblfio.U):
4464 This variable, if defined, contains the string used by stdio to
4465 format long doubles (format 'e') for output.
4467 sPRIEUldbl (longdblfio.U):
4468 This variable, if defined, contains the string used by stdio to
4469 format long doubles (format 'E') for output.
4470 The 'U' in the name is to separate this from sPRIeldbl so that even
4471 case-blind systems can see the difference.
4473 sPRIfldbl (longdblfio.U):
4474 This variable, if defined, contains the string used by stdio to
4475 format long doubles (format 'f') for output.
4477 sPRIFUldbl (longdblfio.U):
4478 This variable, if defined, contains the string used by stdio to
4479 format long doubles (format 'F') for output.
4480 The 'U' in the name is to separate this from sPRIfldbl so that even
4481 case-blind systems can see the difference.
4483 sPRIgldbl (longdblfio.U):
4484 This variable, if defined, contains the string used by stdio to
4485 format long doubles (format 'g') for output.
4487 sPRIGUldbl (longdblfio.U):
4488 This variable, if defined, contains the string used by stdio to
4489 format long doubles (format 'G') for output.
4490 The 'U' in the name is to separate this from sPRIgldbl so that even
4491 case-blind systems can see the difference.
4493 sPRIi64 (quadfio.U):
4494 This variable, if defined, contains the string used by stdio to
4495 format 64-bit decimal numbers (format 'i') for output.
4497 sPRIo64 (quadfio.U):
4498 This variable, if defined, contains the string used by stdio to
4499 format 64-bit octal numbers (format 'o') for output.
4501 sPRIu64 (quadfio.U):
4502 This variable, if defined, contains the string used by stdio to
4503 format 64-bit unsigned decimal numbers (format 'u') for output.
4505 sPRIx64 (quadfio.U):
4506 This variable, if defined, contains the string used by stdio to
4507 format 64-bit hexadecimal numbers (format 'x') for output.
4509 sPRIXU64 (quadfio.U):
4510 This variable, if defined, contains the string used by stdio to
4511 format 64-bit hExADECimAl numbers (format 'X') for output.
4512 The 'U' in the name is to separate this from sPRIx64 so that even
4513 case-blind systems can see the difference.
4515 srand48_r_proto (d_srand48_r.U):
4516 This variable encodes the prototype of srand48_r.
4517 It is zero if d_srand48_r is undef, and one of the
4518 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4521 srandom_r_proto (d_srandom_r.U):
4522 This variable encodes the prototype of srandom_r.
4523 It is zero if d_srandom_r is undef, and one of the
4524 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4528 This variable holds the path to the package source. It is up to
4529 the Makefile to use this variable and set VPATH accordingly to
4530 find the sources remotely.
4532 sSCNfldbl (longdblfio.U):
4533 This variable, if defined, contains the string used by stdio to
4534 format long doubles (format 'f') for input.
4536 ssizetype (ssizetype.U):
4537 This variable defines ssizetype to be something like ssize_t,
4538 long or int. It is used by functions that return a count
4539 of bytes or an error condition. It must be a signed type.
4540 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4542 startperl (startperl.U):
4543 This variable contains the string to put on the front of a perl
4544 script to make sure (hopefully) that it runs with perl and not some
4545 shell. Of course, that leading line must be followed by the classical
4547 eval 'exec perl -S $0 ${1+"$@"}'
4548 if $running_under_some_shell;
4549 to guarantee perl startup should the shell execute the script. Note
4550 that this magic incatation is not understood by csh.
4552 startsh (startsh.U):
4553 This variable contains the string to put on the front of a shell
4554 script to make sure (hopefully) that it runs with sh and not some
4557 static_ext (Extensions.U):
4558 This variable holds a list of XS extension files we want to
4559 link statically into the package. It is used by Makefile.
4561 stdchar (stdchar.U):
4562 This variable conditionally defines STDCHAR to be the type of char
4563 used in stdio.h. It has the values "unsigned char" or "char".
4565 stdio_base (d_stdstdio.U):
4566 This variable defines how, given a FILE pointer, fp, to access the
4567 _base field (or equivalent) of stdio.h's FILE structure. This will
4568 be used to define the macro FILE_base(fp).
4570 stdio_bufsiz (d_stdstdio.U):
4571 This variable defines how, given a FILE pointer, fp, to determine
4572 the number of bytes store in the I/O buffer pointer to by the
4573 _base field (or equivalent) of stdio.h's FILE structure. This will
4574 be used to define the macro FILE_bufsiz(fp).
4576 stdio_cnt (d_stdstdio.U):
4577 This variable defines how, given a FILE pointer, fp, to access the
4578 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4579 be used to define the macro FILE_cnt(fp).
4581 stdio_filbuf (d_stdstdio.U):
4582 This variable defines how, given a FILE pointer, fp, to tell
4583 stdio to refill its internal buffers (?). This will
4584 be used to define the macro FILE_filbuf(fp).
4586 stdio_ptr (d_stdstdio.U):
4587 This variable defines how, given a FILE pointer, fp, to access the
4588 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4589 be used to define the macro FILE_ptr(fp).
4591 stdio_stream_array (stdio_streams.U):
4592 This variable tells the name of the array holding the stdio streams.
4593 Usual values include _iob, __iob, and __sF.
4595 strerror_r_proto (d_strerror_r.U):
4596 This variable encodes the prototype of strerror_r.
4597 It is zero if d_strerror_r is undef, and one of the
4598 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4601 strings (i_string.U):
4602 This variable holds the full path of the string header that will be
4603 used. Typically /usr/include/string.h or /usr/include/strings.h.
4606 This variable is defined but not used by Configure.
4607 The value is a plain '' and is not useful.
4609 subversion (patchlevel.U):
4610 The subversion level of this package.
4611 The value of subversion comes from the patchlevel.h file.
4612 In a version number such as 5.6.1, this is the "1".
4613 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4614 This is unique to perl.
4617 This variable holds the place where the manual is located on this
4618 system. It is not the place where the user wants to put his manual
4619 pages. Rather it is the place where Configure may look to find manual
4620 for unix commands (section 1 of the manual usually). See mansrc.
4623 This variable is defined but not used by Configure.
4624 The value is a plain '' and is not useful.
4627 This variable is defined but not used by Configure.
4628 The value is a plain '' and is not useful.
4630 targetarch (Cross.U):
4631 If cross-compiling, this variable contains the target architecture.
4632 If not, this will be empty.
4635 This variable is defined but not used by Configure.
4636 The value is a plain '' and is not useful.
4639 This variable is defined but not used by Configure.
4640 The value is a plain '' and is not useful.
4643 This variable is used internally by Configure to determine the
4644 full pathname (if any) of the test program. After Configure runs,
4645 the value is reset to a plain "test" and is not useful.
4647 timeincl (i_time.U):
4648 This variable holds the full path of the included time header(s).
4650 timetype (d_time.U):
4651 This variable holds the type returned by time(). It can be long,
4652 or time_t on BSD sites (in which case <sys/types.h> should be
4653 included). Anyway, the type Time_t should be used.
4655 tmpnam_r_proto (d_tmpnam_r.U):
4656 This variable encodes the prototype of tmpnam_r.
4657 It is zero if d_tmpnam_r is undef, and one of the
4658 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4662 This variable contains the command used by Configure
4663 to copy to from the target host. Useful and available
4664 only during Perl build.
4665 The string ':' if not cross-compiling.
4668 This variable is used internally by Configure to determine the
4669 full pathname (if any) of the touch program. After Configure runs,
4670 the value is reset to a plain "touch" and is not useful.
4673 This variable is used internally by Configure to determine the
4674 full pathname (if any) of the tr program. After Configure runs,
4675 the value is reset to a plain "tr" and is not useful.
4678 This variable contains the value to be passed to the tr(1)
4679 command to transliterate a newline. Typical values are
4680 '\012' and '\n'. This is needed for EBCDIC systems where
4681 newline is not necessarily '\012'.
4684 This variable is defined but not used by Configure.
4685 The value is a plain '' and is not useful.
4687 ttyname_r_proto (d_ttyname_r.U):
4688 This variable encodes the prototype of ttyname_r.
4689 It is zero if d_ttyname_r is undef, and one of the
4690 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4694 This variable is the size of an U16 in bytes.
4697 This variable contains the C type used for Perl's U16.
4700 This variable is the size of an U32 in bytes.
4703 This variable contains the C type used for Perl's U32.
4706 This variable is the size of an U64 in bytes.
4709 This variable contains the C type used for Perl's U64.
4712 This variable is the size of an U8 in bytes.
4715 This variable contains the C type used for Perl's U8.
4718 This variable contains the format string used for printing a Uid_t.
4720 uidsign (uidsign.U):
4721 This variable contains the signedness of a uidtype.
4722 1 for unsigned, -1 for signed.
4724 uidsize (uidsize.U):
4725 This variable contains the size of a uidtype in bytes.
4727 uidtype (uidtype.U):
4728 This variable defines Uid_t to be something like uid_t, int,
4729 ushort, or whatever type is used to declare user ids in the kernel.
4732 This variable is used internally by Configure to determine the
4733 full pathname (if any) of the uname program. After Configure runs,
4734 the value is reset to a plain "uname" and is not useful.
4737 This variable is used internally by Configure to determine the
4738 full pathname (if any) of the uniq program. After Configure runs,
4739 the value is reset to a plain "uniq" and is not useful.
4741 uquadtype (quadtype.U):
4742 This variable defines Uquad_t to be something like unsigned long,
4743 unsigned int, unsigned long long, uint64_t, or whatever type is
4744 used for 64-bit integers.
4746 use5005threads (usethreads.U):
4747 This variable conditionally defines the USE_5005THREADS symbol,
4748 and indicates that Perl should be built to use the 5.005-based
4749 threading implementation.
4751 use64bitall (use64bits.U):
4752 This variable conditionally defines the USE_64_BIT_ALL symbol,
4753 and indicates that 64-bit integer types should be used
4754 when available. The maximal possible
4755 64-bitness is employed: LP64 or ILP64, meaning that you will
4756 be able to use more than 2 gigabytes of memory. This mode is
4757 even more binary incompatible than USE_64_BIT_INT. You may not
4758 be able to run the resulting executable in a 32-bit CPU at all or
4759 you may need at least to reboot your OS to 64-bit mode.
4761 use64bitint (use64bits.U):
4762 This variable conditionally defines the USE_64_BIT_INT symbol,
4763 and indicates that 64-bit integer types should be used
4764 when available. The minimal possible 64-bitness
4765 is employed, just enough to get 64-bit integers into Perl.
4766 This may mean using for example "long longs", while your memory
4767 may still be limited to 2 gigabytes.
4769 usecrosscompile (Cross.U):
4770 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4771 and indicates that Perl has been cross-compiled.
4774 This variable indicates if the system supports dynamic
4775 loading of some sort. See also dlsrc and dlobj.
4777 usefaststdio (usefaststdio.U):
4778 This variable conditionally defines the USE_FAST_STDIO symbol,
4779 and indicates that Perl should be built to use 'fast stdio'.
4780 Defaults to define in Perls 5.8 and earlier, to undef later.
4782 useithreads (usethreads.U):
4783 This variable conditionally defines the USE_ITHREADS symbol,
4784 and indicates that Perl should be built to use the interpreter-based
4785 threading implementation.
4787 uselargefiles (uselfs.U):
4788 This variable conditionally defines the USE_LARGE_FILES symbol,
4789 and indicates that large file interfaces should be used when
4792 uselongdouble (uselongdbl.U):
4793 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4794 and indicates that long doubles should be used when available.
4796 usemallocwrap (mallocsrc.U):
4797 This variable contains y if we are wrapping malloc to prevent
4798 integer overflow during size calculations.
4800 usemorebits (usemorebits.U):
4801 This variable conditionally defines the USE_MORE_BITS symbol,
4802 and indicates that explicit 64-bit interfaces and long doubles
4803 should be used when available.
4805 usemultiplicity (usemultiplicity.U):
4806 This variable conditionally defines the MULTIPLICITY symbol,
4807 and indicates that Perl should be built to use multiplicity.
4809 usemymalloc (mallocsrc.U):
4810 This variable contains y if the malloc that comes with this package
4811 is desired over the system's version of malloc. People often include
4812 special versions of malloc for effiency, but such versions are often
4813 less portable. See also mallocsrc and mallocobj.
4814 If this is 'y', then -lmalloc is removed from $libs.
4817 This variable contains 'true' or 'false' depending whether the
4818 nm extraction is wanted or not.
4820 useopcode (Extensions.U):
4821 This variable holds either 'true' or 'false' to indicate
4822 whether the Opcode extension should be used. The sole
4823 use for this currently is to allow an easy mechanism
4824 for users to skip the Opcode extension from the Configure
4827 useperlio (useperlio.U):
4828 This variable conditionally defines the USE_PERLIO symbol,
4829 and indicates that the PerlIO abstraction should be
4832 useposix (Extensions.U):
4833 This variable holds either 'true' or 'false' to indicate
4834 whether the POSIX extension should be used. The sole
4835 use for this currently is to allow an easy mechanism
4836 for hints files to indicate that POSIX will not compile
4837 on a particular system.
4839 usereentrant (usethreads.U):
4840 This variable conditionally defines the USE_REENTRANT_API symbol,
4841 which indicates that the thread code may try to use the various
4842 _r versions of library functions. This is only potentially
4843 meaningful if usethreads is set and is very experimental, it is
4844 not even prompted for.
4846 userelocatableinc (bin.U):
4847 This variable is set to true to indicate that perl should relocate
4848 @INC entries at runtime based on the path to the perl binary.
4849 Any @INC paths starting ".../" are relocated relative to the directory
4850 containing the perl binary, and a logical cleanup of the path is then
4851 made around the join point (removing "dir/../" pairs)
4854 This variable is set to true when the user agrees to use sfio.
4855 It is set to false when sfio is not available or when the user
4856 explicitely requests not to use sfio. It is here primarily so
4857 that command-line settings can override the auto-detection of
4858 d_sfio without running into a "WHOA THERE".
4860 useshrplib (libperl.U):
4861 This variable is set to 'true' if the user wishes
4862 to build a shared libperl, and 'false' otherwise.
4864 usesitecustomize (d_sitecustomize.U):
4865 This variable is set to true when the user requires a mechanism that
4866 allows the sysadmin to add entries to @INC at runtime. This variable
4867 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
4869 usesocks (usesocks.U):
4870 This variable conditionally defines the USE_SOCKS symbol,
4871 and indicates that Perl should be built to use SOCKS.
4873 usethreads (usethreads.U):
4874 This variable conditionally defines the USE_THREADS symbol,
4875 and indicates that Perl should be built to use threads.
4877 usevendorprefix (vendorprefix.U):
4878 This variable tells whether the vendorprefix
4879 and consequently other vendor* paths are in use.
4881 usevfork (d_vfork.U):
4882 This variable is set to true when the user accepts to use vfork.
4883 It is set to false when no vfork is available or when the user
4884 explicitely requests not to use vfork.
4887 This variable holds the path of the include files, which is
4888 usually /usr/include. It is mainly used by other Configure units.
4891 This variable is defined but not used by Configure.
4892 The value is a plain '' and is not useful.
4894 uvoformat (perlxvf.U):
4895 This variable contains the format string used for printing
4896 a Perl UV as an unsigned octal integer.
4899 This variable is the size of a UV in bytes.
4902 This variable contains the C type used for Perl's UV.
4904 uvuformat (perlxvf.U):
4905 This variable contains the format string used for printing
4906 a Perl UV as an unsigned decimal integer.
4908 uvxformat (perlxvf.U):
4909 This variable contains the format string used for printing
4910 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4912 uvXUformat (perlxvf.U):
4913 This variable contains the format string used for printing
4914 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4916 vendorarch (vendorarch.U):
4917 This variable contains the value of the PERL_VENDORARCH symbol.
4918 It may have a ~ on the front.
4919 The standard distribution will put nothing in this directory.
4920 Vendors who distribute perl may wish to place their own
4921 architecture-dependent modules and extensions in this directory with
4922 MakeMaker Makefile.PL INSTALLDIRS=vendor
4923 or equivalent. See INSTALL for details.
4925 vendorarchexp (vendorarch.U):
4926 This variable is the ~name expanded version of vendorarch, so that you
4927 may use it directly in Makefiles or shell scripts.
4929 vendorbin (vendorbin.U):
4930 This variable contains the eventual value of the VENDORBIN symbol.
4931 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 additional
4934 binaries in this directory with
4935 MakeMaker Makefile.PL INSTALLDIRS=vendor
4936 or equivalent. See INSTALL for details.
4938 vendorbinexp (vendorbin.U):
4939 This variable is the ~name expanded version of vendorbin, so that you
4940 may use it directly in Makefiles or shell scripts.
4942 vendorhtml1dir (vendorhtml1dir.U):
4943 This variable contains the name of the directory for html
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 html pages in this directory with
4948 MakeMaker Makefile.PL INSTALLDIRS=vendor
4949 or equivalent. See INSTALL for details.
4951 vendorhtml1direxp (vendorhtml1dir.U):
4952 This variable is the ~name expanded version of vendorhtml1dir, so that you
4953 may use it directly in Makefiles or shell scripts.
4955 vendorhtml3dir (vendorhtml3dir.U):
4956 This variable contains the name of the directory for html
4957 library pages. It may have a ~ on the front.
4958 The standard distribution will put nothing in this directory.
4959 Vendors who distribute perl may wish to place their own
4960 html pages for modules and extensions in this directory with
4961 MakeMaker Makefile.PL INSTALLDIRS=vendor
4962 or equivalent. See INSTALL for details.
4964 vendorhtml3direxp (vendorhtml3dir.U):
4965 This variable is the ~name expanded version of vendorhtml3dir, so that you
4966 may use it directly in Makefiles or shell scripts.
4968 vendorlib (vendorlib.U):
4969 This variable contains the eventual value of the VENDORLIB symbol,
4970 which is the name of the private library for this package.
4971 The standard distribution will put nothing in this directory.
4972 Vendors who distribute perl may wish to place their own
4973 modules in this directory with
4974 MakeMaker Makefile.PL INSTALLDIRS=vendor
4975 or equivalent. See INSTALL for details.
4977 vendorlib_stem (vendorlib.U):
4978 This variable is $vendorlibexp with any trailing version-specific component
4979 removed. The elements in inc_version_list (inc_version_list.U) can
4980 be tacked onto this variable to generate a list of directories to search.
4982 vendorlibexp (vendorlib.U):
4983 This variable is the ~name expanded version of vendorlib, so that you
4984 may use it directly in Makefiles or shell scripts.
4986 vendorman1dir (vendorman1dir.U):
4987 This variable contains the name of the directory for man1
4988 pages. It may have a ~ on the front.
4989 The standard distribution will put nothing in this directory.
4990 Vendors who distribute perl may wish to place their own
4991 man1 pages in this directory with
4992 MakeMaker Makefile.PL INSTALLDIRS=vendor
4993 or equivalent. See INSTALL for details.
4995 vendorman1direxp (vendorman1dir.U):
4996 This variable is the ~name expanded version of vendorman1dir, so that you
4997 may use it directly in Makefiles or shell scripts.
4999 vendorman3dir (vendorman3dir.U):
5000 This variable contains the name of the directory for man3
5001 pages. It may have a ~ on the front.
5002 The standard distribution will put nothing in this directory.
5003 Vendors who distribute perl may wish to place their own
5004 man3 pages in this directory with
5005 MakeMaker Makefile.PL INSTALLDIRS=vendor
5006 or equivalent. See INSTALL for details.
5008 vendorman3direxp (vendorman3dir.U):
5009 This variable is the ~name expanded version of vendorman3dir, so that you
5010 may use it directly in Makefiles or shell scripts.
5012 vendorprefix (vendorprefix.U):
5013 This variable holds the full absolute path of the directory below
5014 which the vendor will install add-on packages.
5015 See INSTALL for usage and examples.
5017 vendorprefixexp (vendorprefix.U):
5018 This variable holds the full absolute path of the directory below
5019 which the vendor will install add-on packages. Derived from vendorprefix.
5021 vendorscript (vendorscript.U):
5022 This variable contains the eventual value of the VENDORSCRIPT symbol.
5023 It may have a ~ on the front.
5024 The standard distribution will put nothing in this directory.
5025 Vendors who distribute perl may wish to place additional
5026 executable scripts in this directory with
5027 MakeMaker Makefile.PL INSTALLDIRS=vendor
5028 or equivalent. See INSTALL for details.
5030 vendorscriptexp (vendorscript.U):
5031 This variable is the ~name expanded version of vendorscript, so that you
5032 may use it directly in Makefiles or shell scripts.
5034 version (patchlevel.U):
5035 The full version number of this package, such as 5.6.1 (or 5_6_1).
5036 This combines revision, patchlevel, and subversion to get the
5037 full version number, including any possible subversions.
5038 This is suitable for use as a directory name, and hence is
5039 filesystem dependent.
5041 version_patchlevel_string (patchlevel.U):
5042 This is a string combining version, subversion and
5043 perl_patchlevel (if perl_patchlevel is non-zero).
5044 It is typically something like
5045 'version 7 subversion 1' or
5046 'version 7 subversion 1 patchlevel 11224'
5047 It is computed here to avoid duplication of code in myconfig.SH
5050 versiononly (versiononly.U):
5051 If set, this symbol indicates that only the version-specific
5052 components of a perl installation should be installed.
5053 This may be useful for making a test installation of a new
5054 version without disturbing the existing installation.
5055 Setting versiononly is equivalent to setting installperl's -v option.
5056 In particular, the non-versioned scripts and programs such as
5057 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5058 (see INSTALL for a more complete list). Nor are the man
5060 Usually, this is undef.
5063 This variable is defined but not used by Configure.
5064 The value is a plain '' and is not useful.
5066 voidflags (voidflags.U):
5067 This variable contains the eventual value of the VOIDFLAGS symbol,
5068 which indicates how much support of the void type is given by this
5069 compiler. See VOIDFLAGS for more info.
5072 This variable holds extra path (space-separated) used to find
5073 libraries on this platform, for example CPU-specific libraries
5074 (on multi-CPU platforms) may be listed here.
5077 This variable holds the name of the compiler compiler we
5078 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5081 This variable contains any additional yacc flags desired by the
5082 user. It is up to the Makefile to use this.
5085 This variable is defined but not used by Configure.
5086 The value is a plain '' and is not useful.
5089 This variable is used internally by Configure to determine the
5090 full pathname (if any) of the zip program. After Configure runs,
5091 the value is reset to a plain "zip" and is not useful.