2 !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
3 This file is built by metaconfig.
5 This file contains a description of all the shell variables whose value is
6 determined by the Configure script. Variables intended for use in C
7 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
8 generates pod documentation for Config.pm from this file--please try to keep
9 the formatting regular.]
12 This variable defines the extension used for ordinary library files.
13 For unix, it is '.a'. The '.' is included. Other possible
14 values include '.lib'.
17 This variable defines the extension used for executable files.
18 DJGPP, Cygwin and OS/2 use '.exe'. Stratus VOS uses '.pm'.
19 On operating systems which do not require a specific extension
20 for executable files, this variable is empty.
23 This variable defines the extension used for object files.
24 For unix, it is '.o'. The '.' is included. Other possible
25 values include '.obj'.
28 This variable is set to 'true' if AFS (Andrew File System) is used
29 on the system, 'false' otherwise. It is possible to override this
30 with a hint value or command line option, but you'd better know
34 This variable is by default set to '/afs'. In the unlikely case
35 this is not the correct root, it is possible to override this with
36 a hint value or command line option. This will be used in subsequent
37 tests for AFSness in the configure and test process.
39 alignbytes (alignbytes.U):
40 This variable holds the number of bytes required to align a
41 double-- or a long double when applicable. Usual values are
42 2, 4 and 8. The default is eight, for safety.
44 ansi2knr (ansi2knr.U):
45 This variable is set if the user needs to run ansi2knr.
46 Currently, this is not supported, so we just abort.
48 aphostname (d_gethname.U):
49 This variable contains the command which can be used to compute the
50 host name. The command is fully qualified by its absolute path, to make
51 it safe when used by a process with super-user privileges.
53 api_revision (patchlevel.U):
54 The three variables, api_revision, api_version, and
55 api_subversion, specify the version of the oldest perl binary
56 compatible with the present perl. In a full version string
57 such as '5.6.1', api_revision is the '5'.
58 Prior to 5.5.640, the format was a floating point number,
61 perl.c:incpush() and lib/lib.pm will automatically search in
62 $sitelib/.. for older directories back to the limit specified
63 by these api_ variables. This is only useful if you have a
64 perl library directory tree structured like the default one.
65 See INSTALL for how this works. The versioned site_perl
66 directory was introduced in 5.005, so that is the lowest
67 possible value. The version list appropriate for the current
68 system is determined in inc_version_list.U.
70 XXX To do: Since compatibility can depend on compile time
71 options (such as bincompat, longlong, etc.) it should
72 (perhaps) be set by Configure, but currently it isn't.
73 Currently, we read a hard-wired value from patchlevel.h.
74 Perhaps what we ought to do is take the hard-wired value from
75 patchlevel.h but then modify it if the current Configure
76 options warrant. patchlevel.h then would use an #ifdef guard.
78 api_subversion (patchlevel.U):
79 The three variables, api_revision, api_version, and
80 api_subversion, specify the version of the oldest perl binary
81 compatible with the present perl. In a full version string
82 such as '5.6.1', api_subversion is the '1'. See api_revision for
85 api_version (patchlevel.U):
86 The three variables, api_revision, api_version, and
87 api_subversion, specify the version of the oldest perl binary
88 compatible with the present perl. In a full version string
89 such as '5.6.1', api_version is the '6'. See api_revision for
90 full details. As a special case, 5.5.0 is rendered in the
91 old-style as 5.005. (In the 5.005_0x maintenance series,
92 this was the only versioned directory in $sitelib.)
94 api_versionstring (patchlevel.U):
95 This variable combines api_revision, api_version, and
96 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
97 for use as a directory name. This is filesystem dependent.
100 This variable is used internally by Configure to determine the
101 full pathname (if any) of the ar program. After Configure runs,
102 the value is reset to a plain "ar" and is not useful.
105 This variable holds the name of the directory in which the user wants
106 to put architecture-dependent public library files for $package.
107 It is most often a local directory such as /usr/local/lib.
108 Programs using this variable must be prepared to deal
109 with filename expansion.
111 archlibexp (archlib.U):
112 This variable is the same as the archlib variable, but is
113 filename expanded at configuration time, for convenient use.
115 archname (archname.U):
116 This variable is a short name to characterize the current
117 architecture. It is used mainly to construct the default archlib.
119 archname64 (use64bits.U):
120 This variable is used for the 64-bitness part of $archname.
123 This variable defines any additional objects that must be linked
124 in with the program on this architecture. On unix, it is usually
125 empty. It is typically used to include emulations of unix calls
126 or other facilities. For perl on OS/2, for example, this would
129 asctime_r_proto (d_asctime_r.U):
130 This variable encodes the prototype of asctime_r.
131 It is zero if d_asctime_r is undef, and one of the
132 REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
136 This variable is used internally by Configure to determine the
137 full pathname (if any) of the awk program. After Configure runs,
138 the value is reset to a plain "awk" and is not useful.
141 The base revision level of this package, from the .package file.
144 This variable is defined but not used by Configure.
145 The value is the empty string 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 variable saves the result from configure if generated binaries
155 are in ELF format. Only set to defined when the test has actually
156 been performed, and the result was positive.
159 This is the same as the bin variable, but is filename expanded at
160 configuration time, for use in your makefiles.
163 This variable is used internally by Configure to determine the
164 full pathname (if any) of the bison program. After Configure runs,
165 the value is reset to a plain "bison" and is not useful.
168 This variable is used internally by Configure to determine the
169 full pathname (if any) of the byacc program. After Configure runs,
170 the value is reset to a plain "byacc" and is not useful.
172 byteorder (byteorder.U):
173 This variable holds the byte order in a UV. In the following,
174 larger digits indicate more significance. The variable byteorder
175 is either 4321 on a big-endian machine, or 1234 on a little-endian,
176 or 87654321 on a Cray ... or 3412 with weird order !
179 This variable contains the \c string if that is what causes the echo
180 command to suppress newline. Otherwise it is null. Correct usage is
181 $echo $n "prompt for a question: $c".
183 castflags (d_castneg.U):
184 This variable contains a flag that precise difficulties the
185 compiler has casting odd floating values to unsigned long:
187 1 = couldn't cast < 0
188 2 = couldn't cast >= 0x80000000
189 4 = couldn't cast in argument expression list
192 This variable is used internally by Configure to determine the
193 full pathname (if any) of the cat program. After Configure runs,
194 the value is reset to a plain "cat" and is not useful.
197 This variable holds the name of a command to execute a C compiler which
198 can resolve multiple global references that happen to have the same
199 name. Usual values are 'cc' and 'gcc'.
200 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
202 cccdlflags (dlsrc.U):
203 This variable contains any special flags that might need to be
204 passed with 'cc -c' to compile modules to be used to create a shared
205 library that will be used for dynamic loading. For hpux, this
206 should be +z. It is up to the makefile to use it.
209 This variable contains any special flags that might need to be
210 passed to cc to link with a shared library for dynamic loading.
211 It is up to the makefile to use it. For sunos 4.1, it should
215 This variable contains any additional C compiler flags desired by
216 the user. It is up to the Makefile to use this.
218 ccflags_uselargefiles (uselfs.U):
219 This variable contains the compiler flags needed by large file builds
220 and added to ccflags by hints files.
223 This can set either by hints files or by Configure. If using
224 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
225 Some platforms, however, make good use of this by storing the
226 flavor of the C compiler being used here. For example if using
227 the Sun WorkShop suite, ccname will be 'workshop'.
229 ccsymbols (Cppsym.U):
230 The variable contains the symbols defined by the C compiler alone.
231 The symbols defined by cpp or by cc when it calls cpp are not in
232 this list, see cppsymbols and cppccsymbols.
233 The list is a space-separated list of symbol=value tokens.
235 ccversion (Checkcc.U):
236 This can set either by hints files or by Configure. If using
237 a (non-gcc) vendor cc, this variable may contain a version for
241 Login name of the person who ran the Configure script and answered the
242 questions. This is used to tag both config.sh and config_h.SH.
244 cf_email (cf_email.U):
245 Electronic mail address of the person who ran Configure. This can be
246 used by units that require the user's e-mail, like MailList.U.
249 Holds the output of the "date" command when the configuration file was
250 produced. This is used to tag both config.sh and config_h.SH.
252 charbits (charsize.U):
253 This variable contains the value of the CHARBITS symbol, which
254 indicates to the C program how many bits there are in a character.
256 charsize (charsize.U):
257 This variable contains the value of the CHARSIZE symbol, which
258 indicates to the C program how many bytes there are in a character.
261 This variable is defined but not used by Configure.
262 The value is the empty string and is not useful.
265 This variable is used internally by Configure to determine the
266 full pathname (if any) of the chmod program. After Configure runs,
267 the value is reset to a plain "chmod" and is not useful.
270 This variable is defined but not used by Configure.
271 The value is the empty string and is not useful.
273 clocktype (d_times.U):
274 This variable holds the type returned by times(). It can be long,
275 or clock_t on BSD sites (in which case <sys/types.h> should be
279 This variable is used internally by Configure to determine the
280 full pathname (if any) of the comm program. After Configure runs,
281 the value is reset to a plain "comm" and is not useful.
284 This variable is defined but not used by Configure.
285 The value is the empty string and is not useful.
287 config_arg0 (Options.U):
288 This variable contains the string used to invoke the Configure
289 command, as reported by the shell in the $0 variable.
291 config_argc (Options.U):
292 This variable contains the number of command-line arguments
293 passed to Configure, as reported by the shell in the $# variable.
294 The individual arguments are stored as variables config_arg1,
297 config_args (Options.U):
298 This variable contains a single string giving the command-line
299 arguments passed to Configure. Spaces within arguments,
300 quotes, and escaped characters are not correctly preserved.
301 To reconstruct the command line, you must assemble the individual
302 command line pieces, given in config_arg[0-9]*.
304 contains (contains.U):
305 This variable holds the command to do a grep with a proper return
306 status. On most sane systems it is simply "grep". On insane systems
307 it is a grep followed by a cat followed by a test. This variable
308 is primarily for the use of other Configure units.
311 This variable is used internally by Configure to determine the
312 full pathname (if any) of the cp program. After Configure runs,
313 the value is reset to a plain "cp" and is not useful.
316 This variable is defined but not used by Configure.
317 The value is the empty string and is not useful.
320 This variable is used internally by Configure to determine the
321 full pathname (if any) of the cpp program. After Configure runs,
322 the value is reset to a plain "cpp" and is not useful.
324 cpp_stuff (cpp_stuff.U):
325 This variable contains an identification of the concatenation mechanism
326 used by the C preprocessor.
328 cppccsymbols (Cppsym.U):
329 The variable contains the symbols defined by the C compiler
330 when it calls cpp. The symbols defined by the cc alone or cpp
331 alone are not in this list, see ccsymbols and cppsymbols.
332 The list is a space-separated list of symbol=value tokens.
334 cppflags (ccflags.U):
335 This variable holds the flags that will be passed to the C pre-
336 processor. It is up to the Makefile to use it.
338 cpplast (cppstdin.U):
339 This variable has the same functionality as cppminus, only it applies
340 to cpprun and not cppstdin.
342 cppminus (cppstdin.U):
343 This variable contains the second part of the string which will invoke
344 the C preprocessor on the standard input and produce to standard
345 output. This variable will have the value "-" if cppstdin needs
346 a minus to specify standard input, otherwise the value is "".
349 This variable contains the command which will invoke a C preprocessor
350 on standard input and put the output to stdout. It is guaranteed not
351 to be a wrapper and may be a null string if no preprocessor can be
352 made directly available. This preprocessor might be different from the
353 one used by the C compiler. Don't forget to append cpplast after the
354 preprocessor options.
356 cppstdin (cppstdin.U):
357 This variable contains the command which will invoke the C
358 preprocessor on standard input and put the output to stdout.
359 It is primarily used by other Configure units that ask about
360 preprocessor symbols.
362 cppsymbols (Cppsym.U):
363 The variable contains the symbols defined by the C preprocessor
364 alone. The symbols defined by cc or by cc when it calls cpp are
365 not in this list, see ccsymbols and cppccsymbols.
366 The list is a space-separated list of symbol=value tokens.
368 crypt_r_proto (d_crypt_r.U):
369 This variable encodes the prototype of crypt_r.
370 It is zero if d_crypt_r is undef, and one of the
371 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
374 cryptlib (d_crypt.U):
375 This variable holds -lcrypt or the path to a libcrypt.a archive if
376 the crypt() function is not defined in the standard C library. It is
377 up to the Makefile to use this.
380 This variable is used internally by Configure to determine the
381 full pathname (if any) of the csh program. After Configure runs,
382 the value is reset to a plain "csh" and is not useful.
384 ctermid_r_proto (d_ctermid_r.U):
385 This variable encodes the prototype of ctermid_r.
386 It is zero if d_ctermid_r is undef, and one of the
387 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
390 ctime_r_proto (d_ctime_r.U):
391 This variable encodes the prototype of ctime_r.
392 It is zero if d_ctime_r is undef, and one of the
393 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
396 d__fwalk (d__fwalk.U):
397 This variable conditionally defines HAS__FWALK if _fwalk() is
398 available to apply a function to all the file handles.
400 d_access (d_access.U):
401 This variable conditionally defines HAS_ACCESS if the access() system
402 call is available to check for access permissions using real IDs.
404 d_accessx (d_accessx.U):
405 This variable conditionally defines the HAS_ACCESSX symbol, which
406 indicates to the C program that the accessx() routine is available.
409 This variable conditionally defines the HAS_ACOSH symbol, which
410 indicates to the C program that the acosh() routine is available.
413 This variable conditionally defines the HAS_AINTL symbol, which
414 indicates to the C program that the aintl() routine is available.
415 If copysignl is also present we can emulate modfl.
418 This variable conditionally defines the HAS_ALARM symbol, which
419 indicates to the C program that the alarm() routine is available.
421 d_archlib (archlib.U):
422 This variable conditionally defines ARCHLIB to hold the pathname
423 of architecture-dependent library files for $package. If
424 $archlib is the same as $privlib, then this is set to undef.
426 d_asctime64 (d_timefuncs64.U):
427 This variable conditionally defines the HAS_ASCTIME64 symbol, which
428 indicates to the C program that the asctime64 () routine is available.
430 d_asctime_r (d_asctime_r.U):
431 This variable conditionally defines the HAS_ASCTIME_R symbol,
432 which indicates to the C program that the asctime_r()
433 routine is available.
436 This variable conditionally defines the HAS_ASINH symbol, which
437 indicates to the C program that the asinh() routine is available.
440 This variable conditionally defines the HAS_ATANH symbol, which
441 indicates to the C program that the atanh() routine is available.
444 This variable conditionally defines the HAS_ATOLF symbol, which
445 indicates to the C program that the atolf() routine is available.
448 This variable conditionally defines the HAS_ATOLL symbol, which
449 indicates to the C program that the atoll() routine is available.
451 d_attribute_deprecated (d_attribut.U):
452 This variable conditionally defines HASATTRIBUTE_DEPRECATED, which
453 indicates that GCC can handle the attribute for marking deprecated
456 d_attribute_format (d_attribut.U):
457 This variable conditionally defines HASATTRIBUTE_FORMAT, which
458 indicates the C compiler can check for printf-like formats.
460 d_attribute_malloc (d_attribut.U):
461 This variable conditionally defines HASATTRIBUTE_MALLOC, which
462 indicates the C compiler can understand functions as having
463 malloc-like semantics.
465 d_attribute_nonnull (d_attribut.U):
466 This variable conditionally defines HASATTRIBUTE_NONNULL, which
467 indicates that the C compiler can know that certain arguments
468 must not be NULL, and will check accordingly at compile time.
470 d_attribute_noreturn (d_attribut.U):
471 This variable conditionally defines HASATTRIBUTE_NORETURN, which
472 indicates that the C compiler can know that certain functions
473 are guaranteed never to return.
475 d_attribute_pure (d_attribut.U):
476 This variable conditionally defines HASATTRIBUTE_PURE, which
477 indicates that the C compiler can know that certain functions
478 are "pure" functions, meaning that they have no side effects, and
479 only rely on function input and/or global data for their results.
481 d_attribute_unused (d_attribut.U):
482 This variable conditionally defines HASATTRIBUTE_UNUSED, which
483 indicates that the C compiler can know that certain variables
484 and arguments may not always be used, and to not throw warnings
485 if they don't get used.
487 d_attribute_warn_unused_result (d_attribut.U):
488 This variable conditionally defines
489 HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
490 compiler can know that certain functions have a return values
491 that must not be ignored, such as malloc() or open().
493 d_backtrace (d_backtrace.U):
494 This variable conditionally defines the HAS_BACKTRACE symbol, which
495 indicates to the C program that the backtrace() routine is available
496 to get a stack trace.
499 This variable conditionally defines the HAS_BCMP symbol if
500 the bcmp() routine is available to compare strings.
503 This variable conditionally defines the HAS_BCOPY symbol if
504 the bcopy() routine is available to copy strings.
507 This symbol conditionally defines the symbol BSD when running on a
510 d_bsdgetpgrp (d_getpgrp.U):
511 This variable conditionally defines USE_BSD_GETPGRP if
512 getpgrp needs one arguments whereas USG one needs none.
514 d_bsdsetpgrp (d_setpgrp.U):
515 This variable conditionally defines USE_BSD_SETPGRP if
516 setpgrp needs two arguments whereas USG one needs none.
517 See also d_setpgid for a POSIX interface.
519 d_builtin_choose_expr (d_builtin.U):
520 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
521 indicates that the compiler supports __builtin_choose_expr(x,y,z).
522 This built-in function is analogous to the "x?y:z" operator in C,
523 except that the expression returned has its type unaltered by
524 promotion rules. Also, the built-in function does not evaluate
525 the expression that was not chosen.
527 d_builtin_expect (d_builtin.U):
528 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
529 that the compiler supports __builtin_expect(exp,c). You may use
530 __builtin_expect to provide the compiler with branch prediction
534 This variable conditionally defines the HAS_BZERO symbol if
535 the bzero() routine is available to set memory to 0.
537 d_c99_variadic_macros (d_c99_variadic.U):
538 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
539 symbol, which indicates to the C program that C99 variadic macros
542 d_casti32 (d_casti32.U):
543 This variable conditionally defines CASTI32, which indicates
544 whether the C compiler can cast large floats to 32-bit ints.
546 d_castneg (d_castneg.U):
547 This variable conditionally defines CASTNEG, which indicates
548 whether the C compiler can cast negative float to unsigned.
551 This variable conditionally defines the HAS_CBRT symbol, which
552 indicates to the C program that the cbrt() (cube root) function
555 d_charvspr (d_vprintf.U):
556 This variable conditionally defines CHARVSPRINTF if this system
557 has vsprintf returning type (char*). The trend seems to be to
558 declare it as "int vsprintf()".
561 This variable conditionally defines the HAS_CHOWN symbol, which
562 indicates to the C program that the chown() routine is available.
564 d_chroot (d_chroot.U):
565 This variable conditionally defines the HAS_CHROOT symbol, which
566 indicates to the C program that the chroot() routine is available.
568 d_chsize (d_chsize.U):
569 This variable conditionally defines the CHSIZE symbol, which
570 indicates to the C program that the chsize() routine is available
571 to truncate files. You might need a -lx to get this routine.
574 This variable conditionally defines the HAS_CLASS symbol, which
575 indicates to the C program that the class() routine is available.
577 d_clearenv (d_clearenv.U):
578 This variable conditionally defines the HAS_CLEARENV symbol, which
579 indicates to the C program that the clearenv () routine is available.
581 d_closedir (d_closedir.U):
582 This variable conditionally defines HAS_CLOSEDIR if closedir() is
585 d_cmsghdr_s (d_cmsghdr_s.U):
586 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
587 which indicates that the struct cmsghdr is supported.
590 This variable conditionally defines the HASCONST symbol, which
591 indicates to the C program that this C compiler knows about the
594 d_copysign (d_copysign.U):
595 This variable conditionally defines the HAS_COPYSIGN symbol, which
596 indicates to the C program that the copysign() routine is available.
598 d_copysignl (d_copysignl.U):
599 This variable conditionally defines the HAS_COPYSIGNL symbol, which
600 indicates to the C program that the copysignl() routine is available.
601 If aintl is also present we can emulate modfl.
603 d_cplusplus (d_cplusplus.U):
604 This variable conditionally defines the USE_CPLUSPLUS symbol, which
605 indicates that a C++ compiler was used to compiled Perl and will be
606 used to compile extensions.
609 This variable conditionally defines the CRYPT symbol, which
610 indicates to the C program that the crypt() routine is available
611 to encrypt passwords and the like.
613 d_crypt_r (d_crypt_r.U):
614 This variable conditionally defines the HAS_CRYPT_R symbol,
615 which indicates to the C program that the crypt_r()
616 routine is available.
619 This variable conditionally defines the CSH symbol, which
620 indicates to the C program that the C-shell exists.
622 d_ctermid (d_ctermid.U):
623 This variable conditionally defines CTERMID if ctermid() is
624 available to generate filename for terminal.
626 d_ctermid_r (d_ctermid_r.U):
627 This variable conditionally defines the HAS_CTERMID_R symbol,
628 which indicates to the C program that the ctermid_r()
629 routine is available.
631 d_ctime64 (d_timefuncs64.U):
632 This variable conditionally defines the HAS_CTIME64 symbol, which
633 indicates to the C program that the ctime64 () routine is available.
635 d_ctime_r (d_ctime_r.U):
636 This variable conditionally defines the HAS_CTIME_R symbol,
637 which indicates to the C program that the ctime_r()
638 routine is available.
640 d_cuserid (d_cuserid.U):
641 This variable conditionally defines the HAS_CUSERID symbol, which
642 indicates to the C program that the cuserid() routine is available
643 to get character login names.
645 d_dbl_dig (d_dbl_dig.U):
646 This variable conditionally defines d_dbl_dig if this system's
647 header files provide DBL_DIG, which is the number of significant
648 digits in a double precision number.
650 d_dbminitproto (d_dbminitproto.U):
651 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
652 which indicates to the C program that the system provides
653 a prototype for the dbminit() function. Otherwise, it is
654 up to the program to supply one.
656 d_difftime (d_difftime.U):
657 This variable conditionally defines the HAS_DIFFTIME symbol, which
658 indicates to the C program that the difftime() routine is available.
660 d_difftime64 (d_timefuncs64.U):
661 This variable conditionally defines the HAS_DIFFTIME64 symbol, which
662 indicates to the C program that the difftime64 () routine is available.
664 d_dir_dd_fd (d_dir_dd_fd.U):
665 This variable conditionally defines the HAS_DIR_DD_FD symbol, which
666 indicates that the DIR directory stream type contains a member
667 variable called dd_fd.
670 This variable conditionally defines the HAS_DIRFD constant,
671 which indicates to the C program that dirfd() is available
672 to return the file descriptor of a directory stream.
674 d_dirnamlen (i_dirent.U):
675 This variable conditionally defines DIRNAMLEN, which indicates
676 to the C program that the length of directory entry names is
677 provided by a d_namelen field.
679 d_dladdr (d_dladdr.U):
680 This variable conditionally defines the HAS_DLADDR symbol, which
681 indicates to the C program that the dladdr() routine is available
682 to get a stack trace.
684 d_dlerror (d_dlerror.U):
685 This variable conditionally defines the HAS_DLERROR symbol, which
686 indicates to the C program that the dlerror() routine is available.
688 d_dlopen (d_dlopen.U):
689 This variable conditionally defines the HAS_DLOPEN symbol, which
690 indicates to the C program that the dlopen() routine is available.
692 d_dlsymun (d_dlsymun.U):
693 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
694 indicates that we need to prepend an underscore to the symbol
695 name before calling dlsym().
697 d_dosuid (d_dosuid.U):
698 This variable conditionally defines the symbol DOSUID, which
699 tells the C program that it should insert setuid emulation code
700 on hosts which have setuid #! scripts disabled.
702 d_drand48_r (d_drand48_r.U):
703 This variable conditionally defines the HAS_DRAND48_R symbol,
704 which indicates to the C program that the drand48_r()
705 routine is available.
707 d_drand48proto (d_drand48proto.U):
708 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
709 which indicates to the C program that the system provides
710 a prototype for the drand48() function. Otherwise, it is
711 up to the program to supply one.
714 This variable conditionally defines HAS_DUP2 if dup2() is
715 available to duplicate file descriptors.
717 d_eaccess (d_eaccess.U):
718 This variable conditionally defines the HAS_EACCESS symbol, which
719 indicates to the C program that the eaccess() routine is available.
721 d_endgrent (d_endgrent.U):
722 This variable conditionally defines the HAS_ENDGRENT symbol, which
723 indicates to the C program that the endgrent() routine is available
724 for sequential access of the group database.
726 d_endgrent_r (d_endgrent_r.U):
727 This variable conditionally defines the HAS_ENDGRENT_R symbol,
728 which indicates to the C program that the endgrent_r()
729 routine is available.
731 d_endhent (d_endhent.U):
732 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
733 available to close whatever was being used for host queries.
735 d_endhostent_r (d_endhostent_r.U):
736 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
737 which indicates to the C program that the endhostent_r()
738 routine is available.
740 d_endnent (d_endnent.U):
741 This variable conditionally defines HAS_ENDNETENT if endnetent() is
742 available to close whatever was being used for network queries.
744 d_endnetent_r (d_endnetent_r.U):
745 This variable conditionally defines the HAS_ENDNETENT_R symbol,
746 which indicates to the C program that the endnetent_r()
747 routine is available.
749 d_endpent (d_endpent.U):
750 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
751 available to close whatever was being used for protocol queries.
753 d_endprotoent_r (d_endprotoent_r.U):
754 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
755 which indicates to the C program that the endprotoent_r()
756 routine is available.
758 d_endpwent (d_endpwent.U):
759 This variable conditionally defines the HAS_ENDPWENT symbol, which
760 indicates to the C program that the endpwent() routine is available
761 for sequential access of the passwd database.
763 d_endpwent_r (d_endpwent_r.U):
764 This variable conditionally defines the HAS_ENDPWENT_R symbol,
765 which indicates to the C program that the endpwent_r()
766 routine is available.
768 d_endsent (d_endsent.U):
769 This variable conditionally defines HAS_ENDSERVENT if endservent() is
770 available to close whatever was being used for service queries.
772 d_endservent_r (d_endservent_r.U):
773 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
774 which indicates to the C program that the endservent_r()
775 routine is available.
777 d_eofnblk (nblock_io.U):
778 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
779 when reading from a non-blocking I/O source.
782 This variable conditionally defines the HAS_ERF symbol, which
783 indicates to the C program that the erf() routine is available.
786 This variable conditionally defines the HAS_ERFC symbol, which
787 indicates to the C program that the erfc() routine is available.
790 This variable conditionally defines the symbols EUNICE and VAX, which
791 alerts the C program that it must deal with idiosyncrasies of VMS.
794 This variable conditionally defines the HAS_EXP2 symbol, which
795 indicates to the C program that the exp2() routine is available.
798 This variable conditionally defines the HAS_EXPM1 symbol, which
799 indicates to the C program that the expm1() routine is available.
801 d_faststdio (d_faststdio.U):
802 This variable conditionally defines the HAS_FAST_STDIO symbol,
803 which indicates to the C program that the "fast stdio" is available
804 to manipulate the stdio buffers directly.
806 d_fchdir (d_fchdir.U):
807 This variable conditionally defines the HAS_FCHDIR symbol, which
808 indicates to the C program that the fchdir() routine is available.
810 d_fchmod (d_fchmod.U):
811 This variable conditionally defines the HAS_FCHMOD symbol, which
812 indicates to the C program that the fchmod() routine is available
813 to change mode of opened files.
815 d_fchown (d_fchown.U):
816 This variable conditionally defines the HAS_FCHOWN symbol, which
817 indicates to the C program that the fchown() routine is available
818 to change ownership of opened files.
821 This variable conditionally defines the HAS_FCNTL symbol, and indicates
822 whether the fcntl() function exists
824 d_fcntl_can_lock (d_fcntl_can_lock.U):
825 This variable conditionally defines the FCNTL_CAN_LOCK symbol
826 and indicates whether file locking with fcntl() works.
828 d_fd_macros (d_fd_set.U):
829 This variable contains the eventual value of the HAS_FD_MACROS symbol,
830 which indicates if your C compiler knows about the macros which
831 manipulate an fd_set.
833 d_fd_set (d_fd_set.U):
834 This variable contains the eventual value of the HAS_FD_SET symbol,
835 which indicates if your C compiler knows about the fd_set typedef.
838 This variable conditionally defines the HAS_FDIM symbol, which
839 indicates to the C program that the fdim() routine is available.
841 d_fds_bits (d_fd_set.U):
842 This variable contains the eventual value of the HAS_FDS_BITS symbol,
843 which indicates if your fd_set typedef contains the fds_bits member.
844 If you have an fd_set typedef, but the dweebs who installed it did
845 a half-fast job and neglected to provide the macros to manipulate
846 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
848 d_fegetround (d_fegetround.U):
849 This variable conditionally defines HAS_FEGETROUND if fegetround() is
850 available to get the floating point rounding mode.
852 d_fgetpos (d_fgetpos.U):
853 This variable conditionally defines HAS_FGETPOS if fgetpos() is
854 available to get the file position indicator.
856 d_finite (d_finite.U):
857 This variable conditionally defines the HAS_FINITE symbol, which
858 indicates to the C program that the finite() routine is available.
860 d_finitel (d_finitel.U):
861 This variable conditionally defines the HAS_FINITEL symbol, which
862 indicates to the C program that the finitel() routine is available.
864 d_flexfnam (d_flexfnam.U):
865 This variable conditionally defines the FLEXFILENAMES symbol, which
866 indicates that the system supports filenames longer than 14 characters.
869 This variable conditionally defines HAS_FLOCK if flock() is
870 available to do file locking.
872 d_flockproto (d_flockproto.U):
873 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
874 which indicates to the C program that the system provides
875 a prototype for the flock() function. Otherwise, it is
876 up to the program to supply one.
879 This variable conditionally defines the HAS_FMA symbol, which
880 indicates to the C program that the fma() routine is available.
883 This variable conditionally defines the HAS_FMAX symbol, which
884 indicates to the C program that the fmax() routine is available.
887 This variable conditionally defines the HAS_FMIN symbol, which
888 indicates to the C program that the fmin() routine is available.
891 This variable conditionally defines the HAS_FORK symbol, which
892 indicates to the C program that the fork() routine is available.
894 d_fp_class (d_fp_class.U):
895 This variable conditionally defines the HAS_FP_CLASS symbol, which
896 indicates to the C program that the fp_class() routine is available.
898 d_fp_classify (d_fpclassify.U):
899 This variable conditionally defines the HAS_FP_CLASSIFY symbol, which
900 indicates to the C program that the fp_classify() routine is available.
902 d_fp_classl (d_fp_classl.U):
903 This variable conditionally defines the HAS_FP_CLASSL symbol, which
904 indicates to the C program that the fp_classl() routine is available.
906 d_fpathconf (d_pathconf.U):
907 This variable conditionally defines the HAS_FPATHCONF symbol, which
908 indicates to the C program that the pathconf() routine is available
909 to determine file-system related limits and options associated
910 with a given open file descriptor.
912 d_fpclass (d_fpclass.U):
913 This variable conditionally defines the HAS_FPCLASS symbol, which
914 indicates to the C program that the fpclass() routine is available.
916 d_fpclassify (d_fpclassify.U):
917 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
918 indicates to the C program that the fpclassify() routine is available.
920 d_fpclassl (d_fpclassl.U):
921 This variable conditionally defines the HAS_FPCLASSL symbol, which
922 indicates to the C program that the fpclassl() routine is available.
924 d_fpgetround (d_fpgetround.U):
925 This variable conditionally defines HAS_FPGETROUND if fpgetround()
926 is available to get the floating point rounding mode.
928 d_fpos64_t (d_fpos64_t.U):
929 This symbol will be defined if the C compiler supports fpos64_t.
931 d_frexpl (d_frexpl.U):
932 This variable conditionally defines the HAS_FREXPL symbol, which
933 indicates to the C program that the frexpl() routine is available.
935 d_fs_data_s (d_fs_data_s.U):
936 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
937 which indicates that the struct fs_data is supported.
939 d_fseeko (d_fseeko.U):
940 This variable conditionally defines the HAS_FSEEKO symbol, which
941 indicates to the C program that the fseeko() routine is available.
943 d_fsetpos (d_fsetpos.U):
944 This variable conditionally defines HAS_FSETPOS if fsetpos() is
945 available to set the file position indicator.
947 d_fstatfs (d_fstatfs.U):
948 This variable conditionally defines the HAS_FSTATFS symbol, which
949 indicates to the C program that the fstatfs() routine is available.
951 d_fstatvfs (d_statvfs.U):
952 This variable conditionally defines the HAS_FSTATVFS symbol, which
953 indicates to the C program that the fstatvfs() routine is available.
956 This variable conditionally defines the HAS_FSYNC symbol, which
957 indicates to the C program that the fsync() routine is available.
959 d_ftello (d_ftello.U):
960 This variable conditionally defines the HAS_FTELLO symbol, which
961 indicates to the C program that the ftello() routine is available.
964 This variable conditionally defines the HAS_FTIME symbol, which indicates
965 that the ftime() routine exists. The ftime() routine is basically
966 a sub-second accuracy clock.
968 d_futimes (d_futimes.U):
969 This variable conditionally defines the HAS_FUTIMES symbol, which
970 indicates to the C program that the futimes() routine is available.
972 d_Gconvert (d_gconvert.U):
973 This variable holds what Gconvert is defined as to convert
974 floating point numbers into strings. By default, Configure
975 sets this macro to use the first of gconvert, gcvt, or sprintf
976 that pass sprintf-%g-like behavior tests. If perl is using
977 long doubles, the macro uses the first of the following
978 functions that pass Configure's tests: qgcvt, sprintf (if
979 Configure knows how to make sprintf format long doubles--see
980 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
981 The gconvert_preference and gconvert_ld_preference variables
982 can be used to alter Configure's preferences, for doubles and
983 long doubles, respectively. If present, they contain a
984 space-separated list of one or more of the above function
985 names in the order they should be tried.
987 d_Gconvert may be set to override Configure with a platform-
988 specific function. If this function expects a double, a
989 different value may need to be set by the uselongdouble.cbu
990 call-back unit so that long doubles can be formatted without
993 d_gdbm_ndbm_h_uses_prototypes (i_ndbm.U):
994 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
995 which indicates that the gdbm-ndbm.h include file uses real ANSI C
996 prototypes instead of K&R style function declarations. K&R style
997 declarations are unsupported in C++, so the include file requires
998 special handling when using a C++ compiler and this variable is
999 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1000 to get the same information for alternative ndbm.h include files.
1002 d_gdbmndbm_h_uses_prototypes (i_ndbm.U):
1003 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1004 which indicates that the gdbm/ndbm.h include file uses real ANSI C
1005 prototypes instead of K&R style function declarations. K&R style
1006 declarations are unsupported in C++, so the include file requires
1007 special handling when using a C++ compiler and this variable is
1008 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1009 to get the same information for alternative ndbm.h include files.
1011 d_getaddrinfo (d_getaddrinfo.U):
1012 This variable conditionally defines the HAS_GETADDRINFO symbol,
1013 which indicates to the C program that the getaddrinfo() function
1016 d_getcwd (d_getcwd.U):
1017 This variable conditionally defines the HAS_GETCWD symbol, which
1018 indicates to the C program that the getcwd() routine is available
1019 to get the current working directory.
1021 d_getespwnam (d_getespwnam.U):
1022 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
1023 available to retrieve enhanced (shadow) password entries by name.
1025 d_getfsstat (d_getfsstat.U):
1026 This variable conditionally defines the HAS_GETFSSTAT symbol, which
1027 indicates to the C program that the getfsstat() routine is available.
1029 d_getgrent (d_getgrent.U):
1030 This variable conditionally defines the HAS_GETGRENT symbol, which
1031 indicates to the C program that the getgrent() routine is available
1032 for sequential access of the group database.
1034 d_getgrent_r (d_getgrent_r.U):
1035 This variable conditionally defines the HAS_GETGRENT_R symbol,
1036 which indicates to the C program that the getgrent_r()
1037 routine is available.
1039 d_getgrgid_r (d_getgrgid_r.U):
1040 This variable conditionally defines the HAS_GETGRGID_R symbol,
1041 which indicates to the C program that the getgrgid_r()
1042 routine is available.
1044 d_getgrnam_r (d_getgrnam_r.U):
1045 This variable conditionally defines the HAS_GETGRNAM_R symbol,
1046 which indicates to the C program that the getgrnam_r()
1047 routine is available.
1049 d_getgrps (d_getgrps.U):
1050 This variable conditionally defines the HAS_GETGROUPS symbol, which
1051 indicates to the C program that the getgroups() routine is available
1052 to get the list of process groups.
1054 d_gethbyaddr (d_gethbyad.U):
1055 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
1056 indicates to the C program that the gethostbyaddr() routine is available
1057 to look up hosts by their IP addresses.
1059 d_gethbyname (d_gethbynm.U):
1060 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
1061 indicates to the C program that the gethostbyname() routine is available
1062 to look up host names in some data base or other.
1064 d_gethent (d_gethent.U):
1065 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
1066 available to look up host names in some data base or another.
1068 d_gethname (d_gethname.U):
1069 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
1070 indicates to the C program that the gethostname() routine may be
1071 used to derive the host name.
1073 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
1074 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
1075 which indicates to the C program that the gethostbyaddr_r()
1076 routine is available.
1078 d_gethostbyname_r (d_gethostbyname_r.U):
1079 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
1080 which indicates to the C program that the gethostbyname_r()
1081 routine is available.
1083 d_gethostent_r (d_gethostent_r.U):
1084 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
1085 which indicates to the C program that the gethostent_r()
1086 routine is available.
1088 d_gethostprotos (d_gethostprotos.U):
1089 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
1090 which indicates to the C program that <netdb.h> supplies
1091 prototypes for the various gethost*() functions.
1092 See also netdbtype.U for probing for various netdb types.
1094 d_getitimer (d_getitimer.U):
1095 This variable conditionally defines the HAS_GETITIMER symbol, which
1096 indicates to the C program that the getitimer() routine is available.
1098 d_getlogin (d_getlogin.U):
1099 This variable conditionally defines the HAS_GETLOGIN symbol, which
1100 indicates to the C program that the getlogin() routine is available
1101 to get the login name.
1103 d_getlogin_r (d_getlogin_r.U):
1104 This variable conditionally defines the HAS_GETLOGIN_R symbol,
1105 which indicates to the C program that the getlogin_r()
1106 routine is available.
1108 d_getmnt (d_getmnt.U):
1109 This variable conditionally defines the HAS_GETMNT symbol, which
1110 indicates to the C program that the getmnt() routine is available
1111 to retrieve one or more mount info blocks by filename.
1113 d_getmntent (d_getmntent.U):
1114 This variable conditionally defines the HAS_GETMNTENT symbol, which
1115 indicates to the C program that the getmntent() routine is available
1116 to iterate through mounted files to get their mount info.
1118 d_getnameinfo (d_getnameinfo.U):
1119 This variable conditionally defines the HAS_GETNAMEINFO symbol,
1120 which indicates to the C program that the getnameinfo() function
1123 d_getnbyaddr (d_getnbyad.U):
1124 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
1125 indicates to the C program that the getnetbyaddr() routine is available
1126 to look up networks by their IP addresses.
1128 d_getnbyname (d_getnbynm.U):
1129 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
1130 indicates to the C program that the getnetbyname() routine is available
1131 to look up networks by their names.
1133 d_getnent (d_getnent.U):
1134 This variable conditionally defines HAS_GETNETENT if getnetent() is
1135 available to look up network names in some data base or another.
1137 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
1138 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
1139 which indicates to the C program that the getnetbyaddr_r()
1140 routine is available.
1142 d_getnetbyname_r (d_getnetbyname_r.U):
1143 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
1144 which indicates to the C program that the getnetbyname_r()
1145 routine is available.
1147 d_getnetent_r (d_getnetent_r.U):
1148 This variable conditionally defines the HAS_GETNETENT_R symbol,
1149 which indicates to the C program that the getnetent_r()
1150 routine is available.
1152 d_getnetprotos (d_getnetprotos.U):
1153 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1154 which indicates to the C program that <netdb.h> supplies
1155 prototypes for the various getnet*() functions.
1156 See also netdbtype.U for probing for various netdb types.
1158 d_getpagsz (d_getpagsz.U):
1159 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1160 is available to get the system page size.
1162 d_getpbyname (d_getprotby.U):
1163 This variable conditionally defines the HAS_GETPROTOBYNAME
1164 symbol, which indicates to the C program that the
1165 getprotobyname() routine is available to look up protocols
1168 d_getpbynumber (d_getprotby.U):
1169 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1170 symbol, which indicates to the C program that the
1171 getprotobynumber() routine is available to look up protocols
1174 d_getpent (d_getpent.U):
1175 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1176 available to look up protocols in some data base or another.
1178 d_getpgid (d_getpgid.U):
1179 This variable conditionally defines the HAS_GETPGID symbol, which
1180 indicates to the C program that the getpgid(pid) function
1181 is available to get the process group id.
1183 d_getpgrp (d_getpgrp.U):
1184 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1185 available to get the current process group.
1187 d_getpgrp2 (d_getpgrp2.U):
1188 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1189 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1190 is available to get the current process group.
1192 d_getppid (d_getppid.U):
1193 This variable conditionally defines the HAS_GETPPID symbol, which
1194 indicates to the C program that the getppid() routine is available
1195 to get the parent process ID.
1197 d_getprior (d_getprior.U):
1198 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1199 is available to get a process's priority.
1201 d_getprotobyname_r (d_getprotobyname_r.U):
1202 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1203 which indicates to the C program that the getprotobyname_r()
1204 routine is available.
1206 d_getprotobynumber_r (d_getprotobynumber_r.U):
1207 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1208 which indicates to the C program that the getprotobynumber_r()
1209 routine is available.
1211 d_getprotoent_r (d_getprotoent_r.U):
1212 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1213 which indicates to the C program that the getprotoent_r()
1214 routine is available.
1216 d_getprotoprotos (d_getprotoprotos.U):
1217 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1218 which indicates to the C program that <netdb.h> supplies
1219 prototypes for the various getproto*() functions.
1220 See also netdbtype.U for probing for various netdb types.
1222 d_getprpwnam (d_getprpwnam.U):
1223 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1224 available to retrieve protected (shadow) password entries by name.
1226 d_getpwent (d_getpwent.U):
1227 This variable conditionally defines the HAS_GETPWENT symbol, which
1228 indicates to the C program that the getpwent() routine is available
1229 for sequential access of the passwd database.
1231 d_getpwent_r (d_getpwent_r.U):
1232 This variable conditionally defines the HAS_GETPWENT_R symbol,
1233 which indicates to the C program that the getpwent_r()
1234 routine is available.
1236 d_getpwnam_r (d_getpwnam_r.U):
1237 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1238 which indicates to the C program that the getpwnam_r()
1239 routine is available.
1241 d_getpwuid_r (d_getpwuid_r.U):
1242 This variable conditionally defines the HAS_GETPWUID_R symbol,
1243 which indicates to the C program that the getpwuid_r()
1244 routine is available.
1246 d_getsbyname (d_getsrvby.U):
1247 This variable conditionally defines the HAS_GETSERVBYNAME
1248 symbol, which indicates to the C program that the
1249 getservbyname() routine is available to look up services
1252 d_getsbyport (d_getsrvby.U):
1253 This variable conditionally defines the HAS_GETSERVBYPORT
1254 symbol, which indicates to the C program that the
1255 getservbyport() routine is available to look up services
1258 d_getsent (d_getsent.U):
1259 This variable conditionally defines HAS_GETSERVENT if getservent() is
1260 available to look up network services in some data base or another.
1262 d_getservbyname_r (d_getservbyname_r.U):
1263 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1264 which indicates to the C program that the getservbyname_r()
1265 routine is available.
1267 d_getservbyport_r (d_getservbyport_r.U):
1268 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1269 which indicates to the C program that the getservbyport_r()
1270 routine is available.
1272 d_getservent_r (d_getservent_r.U):
1273 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1274 which indicates to the C program that the getservent_r()
1275 routine is available.
1277 d_getservprotos (d_getservprotos.U):
1278 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1279 which indicates to the C program that <netdb.h> supplies
1280 prototypes for the various getserv*() functions.
1281 See also netdbtype.U for probing for various netdb types.
1283 d_getspnam (d_getspnam.U):
1284 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1285 available to retrieve SysV shadow password entries by name.
1287 d_getspnam_r (d_getspnam_r.U):
1288 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1289 which indicates to the C program that the getspnam_r()
1290 routine is available.
1292 d_gettimeod (d_ftime.U):
1293 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1294 indicates that the gettimeofday() system call exists (to obtain a
1295 sub-second accuracy clock). You should probably include <sys/resource.h>.
1297 d_gmtime64 (d_timefuncs64.U):
1298 This variable conditionally defines the HAS_GMTIME64 symbol, which
1299 indicates to the C program that the gmtime64 () routine is available.
1301 d_gmtime_r (d_gmtime_r.U):
1302 This variable conditionally defines the HAS_GMTIME_R symbol,
1303 which indicates to the C program that the gmtime_r()
1304 routine is available.
1306 d_gnulibc (d_gnulibc.U):
1307 Defined if we're dealing with the GNU C Library.
1309 d_grpasswd (i_grp.U):
1310 This variable conditionally defines GRPASSWD, which indicates
1311 that struct group in <grp.h> contains gr_passwd.
1313 d_hasmntopt (d_hasmntopt.U):
1314 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1315 indicates to the C program that the hasmntopt() routine is available
1316 to query the mount options of file systems.
1318 d_htonl (d_htonl.U):
1319 This variable conditionally defines HAS_HTONL if htonl() and its
1320 friends are available to do network order byte swapping.
1322 d_hypot (d_hypot.U):
1323 This variable conditionally defines HAS_HYPOT if hypot is available
1324 for numerically stable hypotenuse function.
1326 d_ilogb (d_ilogb.U):
1327 This variable conditionally defines the HAS_ILOGB symbol, which
1328 indicates to the C program that the ilogb() routine is available
1329 for extracting the exponent of double x as a signed integer.
1331 d_ilogbl (d_ilogbl.U):
1332 This variable conditionally defines the HAS_ILOGBL symbol, which
1333 indicates to the C program that the ilogbl() routine is available
1334 for extracting the exponent of long double x as a signed integer.
1335 If scalbnl is also present we can emulate frexpl.
1337 d_inc_version_list (inc_version_list.U):
1338 This variable conditionally defines PERL_INC_VERSION_LIST.
1339 It is set to undef when PERL_INC_VERSION_LIST is empty.
1341 d_index (d_strchr.U):
1342 This variable conditionally defines HAS_INDEX if index() and
1343 rindex() are available for string searching.
1345 d_inetaton (d_inetaton.U):
1346 This variable conditionally defines the HAS_INET_ATON symbol, which
1347 indicates to the C program that the inet_aton() function is available
1348 to parse IP address "dotted-quad" strings.
1350 d_inetntop (d_inetntop.U):
1351 This variable conditionally defines the HAS_INETNTOP symbol,
1352 which indicates to the C program that the inet_ntop() function
1355 d_inetpton (d_inetpton.U):
1356 This variable conditionally defines the HAS_INETPTON symbol,
1357 which indicates to the C program that the inet_pton() function
1360 d_int64_t (d_int64_t.U):
1361 This symbol will be defined if the C compiler supports int64_t.
1363 d_ip_mreq (d_socket.U):
1364 This variable conditionally defines the HAS_IP_MREQ symbol, which
1365 indicates the availability of a struct ip_mreq.
1367 d_ip_mreq_source (d_socket.U):
1368 This variable conditionally defines the HAS_IP_MREQ_SOURCE symbol,
1369 which indicates the availability of a struct ip_mreq_source.
1371 d_ipv6_mreq (d_socket.U):
1372 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
1373 indicates the availability of a struct ipv6_mreq.
1375 d_ipv6_mreq_source (d_socket.U):
1376 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE symbol,
1377 which indicates the availability of a struct ipv6_mreq_source.
1379 d_isascii (d_isascii.U):
1380 This variable conditionally defines the HAS_ISASCII constant,
1381 which indicates to the C program that isascii() is available.
1383 d_isblank (d_isblank.U):
1384 This variable conditionally defines the HAS_ISBLANK constant,
1385 which indicates to the C program that isblank() is available.
1387 d_isfinite (d_isfinite.U):
1388 This variable conditionally defines the HAS_ISFINITE symbol, which
1389 indicates to the C program that the isfinite() routine is available.
1391 d_isfinitel (d_isfinitel.U):
1392 This variable conditionally defines the HAS_ISFINITEL symbol, which
1393 indicates to the C program that the isfinitel() routine is available.
1395 d_isinf (d_isinf.U):
1396 This variable conditionally defines the HAS_ISINF symbol, which
1397 indicates to the C program that the isinf() routine is available.
1399 d_isinfl (d_isinfl.U):
1400 This variable conditionally defines the HAS_ISINFL symbol, which
1401 indicates to the C program that the isinfl() routine is available.
1403 d_isnan (d_isnan.U):
1404 This variable conditionally defines the HAS_ISNAN symbol, which
1405 indicates to the C program that the isnan() routine is available.
1407 d_isnanl (d_isnanl.U):
1408 This variable conditionally defines the HAS_ISNANL symbol, which
1409 indicates to the C program that the isnanl() routine is available.
1411 d_isnormal (d_isnormal.U):
1412 This variable conditionally defines the HAS_ISNORMAL symbol, which
1413 indicates to the C program that the isnormal() routine is available.
1416 This variable conditionally defines the HAS_J0 symbol, which
1417 indicates to the C program that the j0() routine is available.
1420 This variable conditionally defines the HAS_J0L symbol, which
1421 indicates to the C program that the j0l() routine is available.
1423 d_killpg (d_killpg.U):
1424 This variable conditionally defines the HAS_KILLPG symbol, which
1425 indicates to the C program that the killpg() routine is available
1426 to kill process groups.
1428 d_lc_monetary_2008 (d_lc_monetary_2008.U):
1429 This variable conditionally defines HAS_LC_MONETARY_2008 if libc
1430 has the international currency locale rules from POSIX
1433 d_lchown (d_lchown.U):
1434 This variable conditionally defines the HAS_LCHOWN symbol, which
1435 indicates to the C program that the lchown() routine is available
1436 to operate on a symbolic link (instead of following the link).
1438 d_ldbl_dig (d_ldbl_dig.U):
1439 This variable conditionally defines d_ldbl_dig if this system's
1440 header files provide LDBL_DIG, which is the number of significant
1441 digits in a long double precision number.
1443 d_ldexpl (d_longdbl.U):
1444 This variable conditionally defines the HAS_LDEXPL symbol, which
1445 indicates to the C program that the ldexpl() routine is available.
1447 d_lgamma (d_lgamma.U):
1448 This variable conditionally defines the HAS_LGAMMA symbol, which
1449 indicates to the C program that the lgamma() routine is available
1450 for the log gamma function. See also d_tgamma and d_lgamma_r.
1452 d_lgamma_r (d_lgamma_r.U):
1453 This variable conditionally defines the HAS_LGAMMA_R symbol, which
1454 indicates to the C program that the lgamma_r() routine is available
1455 for the log gamma function, without using the global signgam variable.
1457 d_libm_lib_version (d_libm_lib_version.U):
1458 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1459 which indicates to the C program that math.h defines _LIB_VERSION
1460 being available in libm
1462 d_libname_unique (so.U):
1463 This variable is defined if the target system insists on unique
1464 basenames for shared library files. This is currently true on Android,
1465 false everywhere else we know of.
1466 Defaults to 'undef'.
1469 This variable conditionally defines HAS_LINK if link() is
1470 available to create hard links.
1472 d_llrint (d_llrint.U):
1473 This variable conditionally defines the HAS_LLRINT symbol, which
1474 indicates to the C program that the llrint() routine is available
1475 to return the long long value closest to (according to the current
1476 rounding mode) to x.
1478 d_llround (d_llround.U):
1479 This variable conditionally defines the HAS_LLROUND symbol, which
1480 indicates to the C program that the llround() routine is available
1481 to return the long long value nearest to x.
1483 d_localtime64 (d_timefuncs64.U):
1484 This variable conditionally defines the HAS_LOCALTIME64 symbol, which
1485 indicates to the C program that the localtime64 () routine is available.
1487 d_localtime_r (d_localtime_r.U):
1488 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1489 which indicates to the C program that the localtime_r()
1490 routine is available.
1492 d_localtime_r_needs_tzset (d_localtime_r.U):
1493 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1494 symbol, which makes us call tzset before localtime_r()
1496 d_locconv (d_locconv.U):
1497 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1498 available for numeric and monetary formatting conventions.
1500 d_lockf (d_lockf.U):
1501 This variable conditionally defines HAS_LOCKF if lockf() is
1502 available to do file locking.
1504 d_log1p (d_log1p.U):
1505 This variable conditionally defines the HAS_LOG1P symbol, which
1506 indicates to the C program that the logp1() routine is available
1507 to compute log(1 + x) for values of x close to zero.
1510 This variable conditionally defines the HAS_LOG2 symbol, which
1511 indicates to the C program that the log2() routine is available
1512 to compute log base two.
1515 This variable conditionally defines the HAS_LOGB symbol, which
1516 indicates to the C program that the logb() routine is available
1517 to extract the exponent of x.
1519 d_longdbl (d_longdbl.U):
1520 This variable conditionally defines HAS_LONG_DOUBLE if
1521 the long double type is supported.
1523 d_longlong (d_longlong.U):
1524 This variable conditionally defines HAS_LONG_LONG if
1525 the long long type is supported.
1527 d_lrint (d_lrint.U):
1528 This variable conditionally defines the HAS_LRINT symbol, which
1529 indicates to the C program that the lrint() routine is available
1530 to return the integral value closest to (according to the current
1531 rounding mode) to x.
1533 d_lround (d_lround.U):
1534 This variable conditionally defines the HAS_LROUND symbol, which
1535 indicates to the C program that the lround() routine is available
1536 to return the integral value nearest to x.
1538 d_lseekproto (d_lseekproto.U):
1539 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1540 which indicates to the C program that the system provides
1541 a prototype for the lseek() function. Otherwise, it is
1542 up to the program to supply one.
1544 d_lstat (d_lstat.U):
1545 This variable conditionally defines HAS_LSTAT if lstat() is
1546 available to do file stats on symbolic links.
1548 d_madvise (d_madvise.U):
1549 This variable conditionally defines HAS_MADVISE if madvise() is
1550 available to map a file into memory.
1552 d_malloc_good_size (d_malloc_size.U):
1553 This symbol, if defined, indicates that the malloc_good_size
1554 routine is available for use.
1556 d_malloc_size (d_malloc_size.U):
1557 This symbol, if defined, indicates that the malloc_size
1558 routine is available for use.
1560 d_mblen (d_mblen.U):
1561 This variable conditionally defines the HAS_MBLEN symbol, which
1562 indicates to the C program that the mblen() routine is available
1563 to find the number of bytes in a multibye character.
1565 d_mbstowcs (d_mbstowcs.U):
1566 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1567 indicates to the C program that the mbstowcs() routine is available
1568 to convert a multibyte string into a wide character string.
1570 d_mbtowc (d_mbtowc.U):
1571 This variable conditionally defines the HAS_MBTOWC symbol, which
1572 indicates to the C program that the mbtowc() routine is available
1573 to convert multibyte to a wide character.
1575 d_memchr (d_memchr.U):
1576 This variable conditionally defines the HAS_MEMCHR symbol, which
1577 indicates to the C program that the memchr() routine is available
1578 to locate characters within a C string.
1580 d_memcmp (d_memcmp.U):
1581 This variable conditionally defines the HAS_MEMCMP symbol, which
1582 indicates to the C program that the memcmp() routine is available
1583 to compare blocks of memory.
1585 d_memcpy (d_memcpy.U):
1586 This variable conditionally defines the HAS_MEMCPY symbol, which
1587 indicates to the C program that the memcpy() routine is available
1588 to copy blocks of memory.
1590 d_memmove (d_memmove.U):
1591 This variable conditionally defines the HAS_MEMMOVE symbol, which
1592 indicates to the C program that the memmove() routine is available
1593 to copy potentially overlapping blocks of memory.
1595 d_memset (d_memset.U):
1596 This variable conditionally defines the HAS_MEMSET symbol, which
1597 indicates to the C program that the memset() routine is available
1598 to set blocks of memory.
1600 d_mkdir (d_mkdir.U):
1601 This variable conditionally defines the HAS_MKDIR symbol, which
1602 indicates to the C program that the mkdir() routine is available
1603 to create directories..
1605 d_mkdtemp (d_mkdtemp.U):
1606 This variable conditionally defines the HAS_MKDTEMP symbol, which
1607 indicates to the C program that the mkdtemp() routine is available
1608 to exclusively create a uniquely named temporary directory.
1610 d_mkfifo (d_mkfifo.U):
1611 This variable conditionally defines the HAS_MKFIFO symbol, which
1612 indicates to the C program that the mkfifo() routine is available.
1614 d_mkstemp (d_mkstemp.U):
1615 This variable conditionally defines the HAS_MKSTEMP symbol, which
1616 indicates to the C program that the mkstemp() routine is available
1617 to exclusively create and open a uniquely named temporary file.
1619 d_mkstemps (d_mkstemps.U):
1620 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1621 indicates to the C program that the mkstemps() routine is available
1622 to exclusively create and open a uniquely named (with a suffix)
1625 d_mktime (d_mktime.U):
1626 This variable conditionally defines the HAS_MKTIME symbol, which
1627 indicates to the C program that the mktime() routine is available.
1629 d_mktime64 (d_timefuncs64.U):
1630 This variable conditionally defines the HAS_MKTIME64 symbol, which
1631 indicates to the C program that the mktime64 () routine is available.
1634 This variable conditionally defines HAS_MMAP if mmap() is
1635 available to map a file into memory.
1637 d_modfl (d_modfl.U):
1638 This variable conditionally defines the HAS_MODFL symbol, which
1639 indicates to the C program that the modfl() routine is available.
1641 d_modfl_pow32_bug (d_modfl.U):
1642 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1643 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1644 For example from 4294967303.150000 one would get 4294967302.000000
1645 and 1.150000. The bug has been seen in certain versions of glibc,
1646 release 2.2.2 is known to be okay.
1648 d_modflproto (d_modfl.U):
1649 This symbol, if defined, indicates that the system provides
1650 a prototype for the modfl() function. Otherwise, it is up
1651 to the program to supply one. C99 says it should be
1652 long double modfl(long double, long double *);
1654 d_mprotect (d_mprotect.U):
1655 This variable conditionally defines HAS_MPROTECT if mprotect() is
1656 available to modify the access protection of a memory mapped file.
1659 This variable conditionally defines the HAS_MSG symbol, which
1660 indicates that the entire msg*(2) library is present.
1662 d_msg_ctrunc (d_socket.U):
1663 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1664 which indicates that the MSG_CTRUNC is available. #ifdef is
1665 not enough because it may be an enum, glibc has been known to do this.
1667 d_msg_dontroute (d_socket.U):
1668 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1669 which indicates that the MSG_DONTROUTE is available. #ifdef is
1670 not enough because it may be an enum, glibc has been known to do this.
1672 d_msg_oob (d_socket.U):
1673 This variable conditionally defines the HAS_MSG_OOB symbol,
1674 which indicates that the MSG_OOB is available. #ifdef is
1675 not enough because it may be an enum, glibc has been known to do this.
1677 d_msg_peek (d_socket.U):
1678 This variable conditionally defines the HAS_MSG_PEEK symbol,
1679 which indicates that the MSG_PEEK is available. #ifdef is
1680 not enough because it may be an enum, glibc has been known to do this.
1682 d_msg_proxy (d_socket.U):
1683 This variable conditionally defines the HAS_MSG_PROXY symbol,
1684 which indicates that the MSG_PROXY is available. #ifdef is
1685 not enough because it may be an enum, glibc has been known to do this.
1687 d_msgctl (d_msgctl.U):
1688 This variable conditionally defines the HAS_MSGCTL symbol, which
1689 indicates to the C program that the msgctl() routine is available.
1691 d_msgget (d_msgget.U):
1692 This variable conditionally defines the HAS_MSGGET symbol, which
1693 indicates to the C program that the msgget() routine is available.
1695 d_msghdr_s (d_msghdr_s.U):
1696 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1697 which indicates that the struct msghdr is supported.
1699 d_msgrcv (d_msgrcv.U):
1700 This variable conditionally defines the HAS_MSGRCV symbol, which
1701 indicates to the C program that the msgrcv() routine is available.
1703 d_msgsnd (d_msgsnd.U):
1704 This variable conditionally defines the HAS_MSGSND symbol, which
1705 indicates to the C program that the msgsnd() routine is available.
1707 d_msync (d_msync.U):
1708 This variable conditionally defines HAS_MSYNC if msync() is
1709 available to synchronize a mapped file.
1711 d_munmap (d_munmap.U):
1712 This variable conditionally defines HAS_MUNMAP if munmap() is
1713 available to unmap a region mapped by mmap().
1715 d_mymalloc (mallocsrc.U):
1716 This variable conditionally defines MYMALLOC in case other parts
1717 of the source want to take special action if MYMALLOC is used.
1718 This may include different sorts of profiling or error detection.
1721 This variable conditionally defines HAS_NAN if nan() is
1722 available to generate NaN.
1725 This variable conditionally defines the HAS_NDBM symbol, which
1726 indicates that both the ndbm.h include file and an appropriate ndbm
1727 library exist. Consult the different i_*ndbm variables
1728 to find out the actual include location. Sometimes, a system has the
1729 header file but not the library. This variable will only be set if
1730 the system has both.
1732 d_ndbm_h_uses_prototypes (i_ndbm.U):
1733 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1734 which indicates that the ndbm.h include file uses real ANSI C
1735 prototypes instead of K&R style function declarations. K&R style
1736 declarations are unsupported in C++, so the include file requires
1737 special handling when using a C++ compiler and this variable is
1738 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1739 to get the same information for alternative ndbm.h include files.
1741 d_nearbyint (d_nearbyint.U):
1742 This variable conditionally defines HAS_NEARBYINT if nearbyint()
1743 is available to return the integral value closest to (according to
1744 the current rounding mode) to x.
1746 d_nextafter (d_nextafter.U):
1747 This variable conditionally defines HAS_NEXTAFTER if nextafter()
1748 is available to return the next machine representable double from
1751 d_nexttoward (d_nexttoward.U):
1752 This variable conditionally defines HAS_NEXTTOWARD if nexttoward()
1753 is available to return the next machine representable long double from
1757 This variable conditionally defines the HAS_NICE symbol, which
1758 indicates to the C program that the nice() routine is available.
1760 d_nl_langinfo (d_nl_langinfo.U):
1761 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1762 indicates to the C program that the nl_langinfo() routine is available.
1764 d_nv_preserves_uv (perlxv.U):
1765 This variable indicates whether a variable of type nvtype
1766 can preserve all the bits a variable of type uvtype.
1768 d_nv_zero_is_allbits_zero (perlxv.U):
1769 This variable indicates whether a variable of type nvtype
1770 stores 0.0 in memory as all bits zero.
1772 d_off64_t (d_off64_t.U):
1773 This symbol will be defined if the C compiler supports off64_t.
1775 d_old_pthread_create_joinable (d_pthrattrj.U):
1776 This variable conditionally defines pthread_create_joinable.
1777 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1779 d_oldpthreads (usethreads.U):
1780 This variable conditionally defines the OLD_PTHREADS_API symbol,
1781 and indicates that Perl should be built to use the old
1782 draft POSIX threads API. This is only potentially meaningful if
1785 d_oldsock (d_socket.U):
1786 This variable conditionally defines the OLDSOCKET symbol, which
1787 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1789 d_open3 (d_open3.U):
1790 This variable conditionally defines the HAS_OPEN3 manifest constant,
1791 which indicates to the C program that the 3 argument version of
1792 the open(2) function is available.
1794 d_pathconf (d_pathconf.U):
1795 This variable conditionally defines the HAS_PATHCONF symbol, which
1796 indicates to the C program that the pathconf() routine is available
1797 to determine file-system related limits and options associated
1798 with a given filename.
1800 d_pause (d_pause.U):
1801 This variable conditionally defines the HAS_PAUSE symbol, which
1802 indicates to the C program that the pause() routine is available
1803 to suspend a process until a signal is received.
1805 d_perl_otherlibdirs (otherlibdirs.U):
1806 This variable conditionally defines PERL_OTHERLIBDIRS, which
1807 contains a colon-separated set of paths for the perl binary to
1808 include in @INC. See also otherlibdirs.
1810 d_phostname (d_gethname.U):
1811 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1812 contains the shell command which, when fed to popen(), may be
1813 used to derive the host name.
1816 This variable conditionally defines the HAS_PIPE symbol, which
1817 indicates to the C program that the pipe() routine is available
1818 to create an inter-process channel.
1821 This variable conditionally defines the HAS_POLL symbol, which
1822 indicates to the C program that the poll() routine is available
1823 to poll active file descriptors.
1825 d_portable (d_portable.U):
1826 This variable conditionally defines the PORTABLE symbol, which
1827 indicates to the C program that it should not assume that it is
1828 running on the machine it was compiled on.
1830 d_prctl (d_prctl.U):
1831 This variable conditionally defines the HAS_PRCTL symbol, which
1832 indicates to the C program that the prctl() routine is available.
1833 Note that there are at least two prctl variants: Linux and Irix.
1834 While they are somewhat similar, they are incompatible.
1836 d_prctl_set_name (d_prctl.U):
1837 This variable conditionally defines the HAS_PRCTL_SET_NAME symbol,
1838 which indicates to the C program that the prctl() routine supports
1839 the PR_SET_NAME option.
1841 d_PRId64 (quadfio.U):
1842 This variable conditionally defines the PERL_PRId64 symbol, which
1843 indicates that stdio has a symbol to print 64-bit decimal numbers.
1845 d_PRIeldbl (longdblfio.U):
1846 This variable conditionally defines the PERL_PRIfldbl symbol, which
1847 indicates that stdio has a symbol to print long doubles.
1849 d_PRIEUldbl (longdblfio.U):
1850 This variable conditionally defines the PERL_PRIfldbl symbol, which
1851 indicates that stdio has a symbol to print long doubles.
1852 The 'U' in the name is to separate this from d_PRIeldbl so that even
1853 case-blind systems can see the difference.
1855 d_PRIfldbl (longdblfio.U):
1856 This variable conditionally defines the PERL_PRIfldbl symbol, which
1857 indicates that stdio has a symbol to print long doubles.
1859 d_PRIFUldbl (longdblfio.U):
1860 This variable conditionally defines the PERL_PRIfldbl symbol, which
1861 indicates that stdio has a symbol to print long doubles.
1862 The 'U' in the name is to separate this from d_PRIfldbl so that even
1863 case-blind systems can see the difference.
1865 d_PRIgldbl (longdblfio.U):
1866 This variable conditionally defines the PERL_PRIfldbl symbol, which
1867 indicates that stdio has a symbol to print long doubles.
1869 d_PRIGUldbl (longdblfio.U):
1870 This variable conditionally defines the PERL_PRIfldbl symbol, which
1871 indicates that stdio has a symbol to print long doubles.
1872 The 'U' in the name is to separate this from d_PRIgldbl so that even
1873 case-blind systems can see the difference.
1875 d_PRIi64 (quadfio.U):
1876 This variable conditionally defines the PERL_PRIi64 symbol, which
1877 indicates that stdio has a symbol to print 64-bit decimal numbers.
1879 d_printf_format_null (d_attribut.U):
1880 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
1881 indicates the C compiler allows printf-like formats to be null.
1883 d_PRIo64 (quadfio.U):
1884 This variable conditionally defines the PERL_PRIo64 symbol, which
1885 indicates that stdio has a symbol to print 64-bit octal numbers.
1887 d_PRIu64 (quadfio.U):
1888 This variable conditionally defines the PERL_PRIu64 symbol, which
1889 indicates that stdio has a symbol to print 64-bit unsigned decimal
1892 d_PRIx64 (quadfio.U):
1893 This variable conditionally defines the PERL_PRIx64 symbol, which
1894 indicates that stdio has a symbol to print 64-bit hexadecimal numbers.
1896 d_PRIXU64 (quadfio.U):
1897 This variable conditionally defines the PERL_PRIXU64 symbol, which
1898 indicates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1899 The 'U' in the name is to separate this from d_PRIx64 so that even
1900 case-blind systems can see the difference.
1902 d_procselfexe (d_procselfexe.U):
1903 Defined if $procselfexe is symlink to the absolute
1904 pathname of the executing program.
1906 d_pseudofork (d_vfork.U):
1907 This variable conditionally defines the HAS_PSEUDOFORK symbol,
1908 which indicates that an emulation of the fork routine is available.
1910 d_pthread_atfork (d_pthread_atfork.U):
1911 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1912 which indicates to the C program that the pthread_atfork()
1913 routine is available.
1915 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1916 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1917 pthread_attr_setscope() is available to set the contention scope
1918 attribute of a thread attribute object.
1920 d_pthread_yield (d_pthread_y.U):
1921 This variable conditionally defines the HAS_PTHREAD_YIELD
1922 symbol if the pthread_yield routine is available to yield
1923 the execution of the current thread.
1925 d_ptrdiff_t (d_ptrdiff_t.U):
1926 This symbol will be defined if the C compiler supports ptrdiff_t.
1929 This variable conditionally defines PWAGE, which indicates
1930 that struct passwd contains pw_age.
1932 d_pwchange (i_pwd.U):
1933 This variable conditionally defines PWCHANGE, which indicates
1934 that struct passwd contains pw_change.
1936 d_pwclass (i_pwd.U):
1937 This variable conditionally defines PWCLASS, which indicates
1938 that struct passwd contains pw_class.
1940 d_pwcomment (i_pwd.U):
1941 This variable conditionally defines PWCOMMENT, which indicates
1942 that struct passwd contains pw_comment.
1944 d_pwexpire (i_pwd.U):
1945 This variable conditionally defines PWEXPIRE, which indicates
1946 that struct passwd contains pw_expire.
1948 d_pwgecos (i_pwd.U):
1949 This variable conditionally defines PWGECOS, which indicates
1950 that struct passwd contains pw_gecos.
1952 d_pwpasswd (i_pwd.U):
1953 This variable conditionally defines PWPASSWD, which indicates
1954 that struct passwd contains pw_passwd.
1956 d_pwquota (i_pwd.U):
1957 This variable conditionally defines PWQUOTA, which indicates
1958 that struct passwd contains pw_quota.
1960 d_qgcvt (d_qgcvt.U):
1961 This variable conditionally defines the HAS_QGCVT symbol, which
1962 indicates to the C program that the qgcvt() routine is available.
1964 d_quad (quadtype.U):
1965 This variable, if defined, tells that there's a 64-bit integer type,
1968 d_random_r (d_random_r.U):
1969 This variable conditionally defines the HAS_RANDOM_R symbol,
1970 which indicates to the C program that the random_r()
1971 routine is available.
1973 d_re_comp (d_regcmp.U):
1974 This variable conditionally defines the HAS_RECOMP symbol, which
1975 indicates to the C program that the re_comp() routine is available
1976 for regular patern matching (usally on BSD). If so, it is likely that
1979 d_readdir (d_readdir.U):
1980 This variable conditionally defines HAS_READDIR if readdir() is
1981 available to read directory entries.
1983 d_readdir64_r (d_readdir64_r.U):
1984 This variable conditionally defines the HAS_READDIR64_R symbol,
1985 which indicates to the C program that the readdir64_r()
1986 routine is available.
1988 d_readdir_r (d_readdir_r.U):
1989 This variable conditionally defines the HAS_READDIR_R symbol,
1990 which indicates to the C program that the readdir_r()
1991 routine is available.
1993 d_readlink (d_readlink.U):
1994 This variable conditionally defines the HAS_READLINK symbol, which
1995 indicates to the C program that the readlink() routine is available
1996 to read the value of a symbolic link.
1998 d_readv (d_readv.U):
1999 This variable conditionally defines the HAS_READV symbol, which
2000 indicates to the C program that the readv() routine is available.
2002 d_recvmsg (d_recvmsg.U):
2003 This variable conditionally defines the HAS_RECVMSG symbol, which
2004 indicates to the C program that the recvmsg() routine is available.
2006 d_regcmp (d_regcmp.U):
2007 This variable conditionally defines the HAS_REGCMP symbol, which
2008 indicates to the C program that the regcmp() routine is available
2009 for regular patern matching (usally on System V).
2011 d_regcomp (d_regcmp.U):
2012 This variable conditionally defines the HAS_REGCOMP symbol, which
2013 indicates to the C program that the regcomp() routine is available
2014 for regular patern matching (usally on POSIX.2 conforming systems).
2016 d_remainder (d_remainder.U):
2017 This variable conditionally defines the HAS_REMAINDER symbol, which
2018 indicates to the C program that the remainder() routine is available.
2020 d_remquo (d_remquo.U):
2021 This variable conditionally defines the HAS_REMQUO symbol, which
2022 indicates to the C program that the remquo() routine is available.
2024 d_rename (d_rename.U):
2025 This variable conditionally defines the HAS_RENAME symbol, which
2026 indicates to the C program that the rename() routine is available
2029 d_rewinddir (d_readdir.U):
2030 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
2034 This variable conditionally defines the HAS_RINT symbol, which
2035 indicates to the C program that the rint() routine is available.
2037 d_rmdir (d_rmdir.U):
2038 This variable conditionally defines HAS_RMDIR if rmdir() is
2039 available to remove directories.
2041 d_round (d_round.U):
2042 This variable conditionally defines the HAS_ROUND symbol, which
2043 indicates to the C program that the round() routine is available.
2045 d_safebcpy (d_safebcpy.U):
2046 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
2047 the bcopy() routine can do overlapping copies. Normally, you
2048 should probably use memmove().
2050 d_safemcpy (d_safemcpy.U):
2051 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
2052 the memcpy() routine can do overlapping copies.
2053 For overlapping copies, memmove() should be used, if available.
2055 d_sanemcmp (d_sanemcmp.U):
2056 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
2057 the memcpy() routine is available and can be used to compare relative
2058 magnitudes of chars with their high bits set.
2060 d_sbrkproto (d_sbrkproto.U):
2061 This variable conditionally defines the HAS_SBRK_PROTO symbol,
2062 which indicates to the C program that the system provides
2063 a prototype for the sbrk() function. Otherwise, it is
2064 up to the program to supply one.
2066 d_scalbn (d_scalbn.U):
2067 This variable conditionally defines the HAS_SCALBN symbol, which
2068 indicates to the C program that the scalbn() routine is available.
2070 d_scalbnl (d_scalbnl.U):
2071 This variable conditionally defines the HAS_SCALBNL symbol, which
2072 indicates to the C program that the scalbnl() routine is available.
2073 If ilogbl is also present we can emulate frexpl.
2075 d_sched_yield (d_pthread_y.U):
2076 This variable conditionally defines the HAS_SCHED_YIELD
2077 symbol if the sched_yield routine is available to yield
2078 the execution of the current thread.
2080 d_scm_rights (d_socket.U):
2081 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
2082 which indicates that the SCM_RIGHTS is available. #ifdef is
2083 not enough because it may be an enum, glibc has been known to do this.
2085 d_SCNfldbl (longdblfio.U):
2086 This variable conditionally defines the PERL_PRIfldbl symbol, which
2087 indicates that stdio has a symbol to scan long doubles.
2089 d_seekdir (d_readdir.U):
2090 This variable conditionally defines HAS_SEEKDIR if seekdir() is
2093 d_select (d_select.U):
2094 This variable conditionally defines HAS_SELECT if select() is
2095 available to select active file descriptors. A <sys/time.h>
2096 inclusion may be necessary for the timeout field.
2099 This variable conditionally defines the HAS_SEM symbol, which
2100 indicates that the entire sem*(2) library is present.
2102 d_semctl (d_semctl.U):
2103 This variable conditionally defines the HAS_SEMCTL symbol, which
2104 indicates to the C program that the semctl() routine is available.
2106 d_semctl_semid_ds (d_union_semun.U):
2107 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
2108 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
2110 d_semctl_semun (d_union_semun.U):
2111 This variable conditionally defines USE_SEMCTL_SEMUN, which
2112 indicates that union semun is to be used for semctl IPC_STAT.
2114 d_semget (d_semget.U):
2115 This variable conditionally defines the HAS_SEMGET symbol, which
2116 indicates to the C program that the semget() routine is available.
2118 d_semop (d_semop.U):
2119 This variable conditionally defines the HAS_SEMOP symbol, which
2120 indicates to the C program that the semop() routine is available.
2122 d_sendmsg (d_sendmsg.U):
2123 This variable conditionally defines the HAS_SENDMSG symbol, which
2124 indicates to the C program that the sendmsg() routine is available.
2126 d_setegid (d_setegid.U):
2127 This variable conditionally defines the HAS_SETEGID symbol, which
2128 indicates to the C program that the setegid() routine is available
2129 to change the effective gid of the current program.
2131 d_seteuid (d_seteuid.U):
2132 This variable conditionally defines the HAS_SETEUID symbol, which
2133 indicates to the C program that the seteuid() routine is available
2134 to change the effective uid of the current program.
2136 d_setgrent (d_setgrent.U):
2137 This variable conditionally defines the HAS_SETGRENT symbol, which
2138 indicates to the C program that the setgrent() routine is available
2139 for initializing sequential access to the group database.
2141 d_setgrent_r (d_setgrent_r.U):
2142 This variable conditionally defines the HAS_SETGRENT_R symbol,
2143 which indicates to the C program that the setgrent_r()
2144 routine is available.
2146 d_setgrps (d_setgrps.U):
2147 This variable conditionally defines the HAS_SETGROUPS symbol, which
2148 indicates to the C program that the setgroups() routine is available
2149 to set the list of process groups.
2151 d_sethent (d_sethent.U):
2152 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
2155 d_sethostent_r (d_sethostent_r.U):
2156 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
2157 which indicates to the C program that the sethostent_r()
2158 routine is available.
2160 d_setitimer (d_setitimer.U):
2161 This variable conditionally defines the HAS_SETITIMER symbol, which
2162 indicates to the C program that the setitimer() routine is available.
2164 d_setlinebuf (d_setlnbuf.U):
2165 This variable conditionally defines the HAS_SETLINEBUF symbol, which
2166 indicates to the C program that the setlinebuf() routine is available
2167 to change stderr or stdout from block-buffered or unbuffered to a
2170 d_setlocale (d_setlocale.U):
2171 This variable conditionally defines HAS_SETLOCALE if setlocale() is
2172 available to handle locale-specific ctype implementations.
2174 d_setlocale_r (d_setlocale_r.U):
2175 This variable conditionally defines the HAS_SETLOCALE_R symbol,
2176 which indicates to the C program that the setlocale_r()
2177 routine is available.
2179 d_setnent (d_setnent.U):
2180 This variable conditionally defines HAS_SETNETENT if setnetent() is
2183 d_setnetent_r (d_setnetent_r.U):
2184 This variable conditionally defines the HAS_SETNETENT_R symbol,
2185 which indicates to the C program that the setnetent_r()
2186 routine is available.
2188 d_setpent (d_setpent.U):
2189 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
2192 d_setpgid (d_setpgid.U):
2193 This variable conditionally defines the HAS_SETPGID symbol if the
2194 setpgid(pid, gpid) function is available to set process group ID.
2196 d_setpgrp (d_setpgrp.U):
2197 This variable conditionally defines HAS_SETPGRP if setpgrp() is
2198 available to set the current process group.
2200 d_setpgrp2 (d_setpgrp2.U):
2201 This variable conditionally defines the HAS_SETPGRP2 symbol, which
2202 indicates to the C program that the setpgrp2() (as in DG/UX) routine
2203 is available to set the current process group.
2205 d_setprior (d_setprior.U):
2206 This variable conditionally defines HAS_SETPRIORITY if setpriority()
2207 is available to set a process's priority.
2209 d_setproctitle (d_setproctitle.U):
2210 This variable conditionally defines the HAS_SETPROCTITLE symbol,
2211 which indicates to the C program that the setproctitle() routine
2214 d_setprotoent_r (d_setprotoent_r.U):
2215 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
2216 which indicates to the C program that the setprotoent_r()
2217 routine is available.
2219 d_setpwent (d_setpwent.U):
2220 This variable conditionally defines the HAS_SETPWENT symbol, which
2221 indicates to the C program that the setpwent() routine is available
2222 for initializing sequential access to the passwd database.
2224 d_setpwent_r (d_setpwent_r.U):
2225 This variable conditionally defines the HAS_SETPWENT_R symbol,
2226 which indicates to the C program that the setpwent_r()
2227 routine is available.
2229 d_setregid (d_setregid.U):
2230 This variable conditionally defines HAS_SETREGID if setregid() is
2231 available to change the real and effective gid of the current
2234 d_setresgid (d_setregid.U):
2235 This variable conditionally defines HAS_SETRESGID if setresgid() is
2236 available to change the real, effective and saved gid of the current
2239 d_setresuid (d_setreuid.U):
2240 This variable conditionally defines HAS_SETREUID if setresuid() is
2241 available to change the real, effective and saved uid of the current
2244 d_setreuid (d_setreuid.U):
2245 This variable conditionally defines HAS_SETREUID if setreuid() is
2246 available to change the real and effective uid of the current
2249 d_setrgid (d_setrgid.U):
2250 This variable conditionally defines the HAS_SETRGID symbol, which
2251 indicates to the C program that the setrgid() routine is available
2252 to change the real gid of the current program.
2254 d_setruid (d_setruid.U):
2255 This variable conditionally defines the HAS_SETRUID symbol, which
2256 indicates to the C program that the setruid() routine is available
2257 to change the real uid of the current program.
2259 d_setsent (d_setsent.U):
2260 This variable conditionally defines HAS_SETSERVENT if setservent() is
2263 d_setservent_r (d_setservent_r.U):
2264 This variable conditionally defines the HAS_SETSERVENT_R symbol,
2265 which indicates to the C program that the setservent_r()
2266 routine is available.
2268 d_setsid (d_setsid.U):
2269 This variable conditionally defines HAS_SETSID if setsid() is
2270 available to set the process group ID.
2272 d_setvbuf (d_setvbuf.U):
2273 This variable conditionally defines the HAS_SETVBUF symbol, which
2274 indicates to the C program that the setvbuf() routine is available
2275 to change buffering on an open stdio stream.
2278 This variable conditionally defines the HAS_SHM symbol, which
2279 indicates that the entire shm*(2) library is present.
2281 d_shmat (d_shmat.U):
2282 This variable conditionally defines the HAS_SHMAT symbol, which
2283 indicates to the C program that the shmat() routine is available.
2285 d_shmatprototype (d_shmat.U):
2286 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
2287 symbol, which indicates that sys/shm.h has a prototype for
2290 d_shmctl (d_shmctl.U):
2291 This variable conditionally defines the HAS_SHMCTL symbol, which
2292 indicates to the C program that the shmctl() routine is available.
2294 d_shmdt (d_shmdt.U):
2295 This variable conditionally defines the HAS_SHMDT symbol, which
2296 indicates to the C program that the shmdt() routine is available.
2298 d_shmget (d_shmget.U):
2299 This variable conditionally defines the HAS_SHMGET symbol, which
2300 indicates to the C program that the shmget() routine is available.
2302 d_sigaction (d_sigaction.U):
2303 This variable conditionally defines the HAS_SIGACTION symbol, which
2304 indicates that the Vr4 sigaction() routine is available.
2306 d_signbit (d_signbit.U):
2307 This variable conditionally defines the HAS_SIGNBIT symbol, which
2308 indicates to the C program that the signbit() routine is available
2309 and safe to use with perl's intern NV type.
2311 d_sigprocmask (d_sigprocmask.U):
2312 This variable conditionally defines HAS_SIGPROCMASK
2313 if sigprocmask() is available to examine or change the signal mask
2314 of the calling process.
2316 d_sigsetjmp (d_sigsetjmp.U):
2317 This variable conditionally defines the HAS_SIGSETJMP symbol,
2318 which indicates that the sigsetjmp() routine is available to
2319 call setjmp() and optionally save the process's signal mask.
2321 d_sin6_scope_id (d_socket.U):
2322 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol, which
2323 indicates that a struct sockaddr_in6 structure has the sin6_scope_id
2326 d_sitearch (sitearch.U):
2327 This variable conditionally defines SITEARCH to hold the pathname
2328 of architecture-dependent library files for $package. If
2329 $sitearch is the same as $archlib, then this is set to undef.
2331 d_snprintf (d_snprintf.U):
2332 This variable conditionally defines the HAS_SNPRINTF symbol, which
2333 indicates to the C program that the snprintf () library function
2336 d_sockaddr_in6 (d_socket.U):
2337 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol, which
2338 indicates the availability of a struct sockaddr_in6.
2340 d_sockaddr_sa_len (d_socket.U):
2341 This variable conditionally defines the HAS_SOCKADDR_SA_LEN symbol,
2342 which indicates that a struct sockaddr structure has the sa_len
2345 d_sockatmark (d_sockatmark.U):
2346 This variable conditionally defines the HAS_SOCKATMARK symbol, which
2347 indicates to the C program that the sockatmark() routine is available.
2349 d_sockatmarkproto (d_sockatmarkproto.U):
2350 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
2351 which indicates to the C program that the system provides
2352 a prototype for the sockatmark() function. Otherwise, it is
2353 up to the program to supply one.
2355 d_socket (d_socket.U):
2356 This variable conditionally defines HAS_SOCKET, which indicates
2357 that the BSD socket interface is supported.
2359 d_socklen_t (d_socklen_t.U):
2360 This symbol will be defined if the C compiler supports socklen_t.
2362 d_sockpair (d_socket.U):
2363 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
2364 indicates that the BSD socketpair() is supported.
2366 d_socks5_init (d_socks5_init.U):
2367 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
2368 indicates to the C program that the socks5_init() routine is available.
2370 d_sprintf_returns_strlen (d_sprintf_len.U):
2371 This variable defines whether sprintf returns the length of the string
2372 (as per the ANSI spec). Some C libraries retain compatibility with
2373 pre-ANSI C and return a pointer to the passed in buffer; for these
2374 this variable will be undef.
2376 d_sqrtl (d_sqrtl.U):
2377 This variable conditionally defines the HAS_SQRTL symbol, which
2378 indicates to the C program that the sqrtl() routine is available.
2380 d_srand48_r (d_srand48_r.U):
2381 This variable conditionally defines the HAS_SRAND48_R symbol,
2382 which indicates to the C program that the srand48_r()
2383 routine is available.
2385 d_srandom_r (d_srandom_r.U):
2386 This variable conditionally defines the HAS_SRANDOM_R symbol,
2387 which indicates to the C program that the srandom_r()
2388 routine is available.
2390 d_sresgproto (d_sresgproto.U):
2391 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
2392 which indicates to the C program that the system provides
2393 a prototype for the setresgid() function. Otherwise, it is
2394 up to the program to supply one.
2396 d_sresuproto (d_sresuproto.U):
2397 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2398 which indicates to the C program that the system provides
2399 a prototype for the setresuid() function. Otherwise, it is
2400 up to the program to supply one.
2403 This variable conditionally defines HAS_STAT if stat() is
2404 available to get file status.
2406 d_statblks (d_statblks.U):
2407 This variable conditionally defines USE_STAT_BLOCKS
2408 if this system has a stat structure declaring
2409 st_blksize and st_blocks.
2411 d_statfs_f_flags (d_statfs_f_flags.U):
2412 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2413 symbol, which indicates to struct statfs from has f_flags member.
2414 This kind of struct statfs is coming from sys/mount.h (BSD),
2415 not from sys/statfs.h (SYSV).
2417 d_statfs_s (d_statfs_s.U):
2418 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2419 which indicates that the struct statfs is supported.
2421 d_static_inline (d_static_inline.U):
2422 This variable conditionally defines the HAS_STATIC_INLINE symbol,
2423 which indicates that the C compiler supports C99-style static
2424 inline. That is, the function can't be called from another
2427 d_statvfs (d_statvfs.U):
2428 This variable conditionally defines the HAS_STATVFS symbol, which
2429 indicates to the C program that the statvfs() routine is available.
2431 d_stdio_cnt_lval (d_stdstdio.U):
2432 This variable conditionally defines STDIO_CNT_LVALUE if the
2433 FILE_cnt macro can be used as an lvalue.
2435 d_stdio_ptr_lval (d_stdstdio.U):
2436 This variable conditionally defines STDIO_PTR_LVALUE if the
2437 FILE_ptr macro can be used as an lvalue.
2439 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2440 This symbol is defined if using the FILE_ptr macro as an lvalue
2441 to increase the pointer by n leaves File_cnt(fp) unchanged.
2443 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2444 This symbol is defined if using the FILE_ptr macro as an lvalue
2445 to increase the pointer by n has the side effect of decreasing the
2446 value of File_cnt(fp) by n.
2448 d_stdio_stream_array (stdio_streams.U):
2449 This variable tells whether there is an array holding
2452 d_stdiobase (d_stdstdio.U):
2453 This variable conditionally defines USE_STDIO_BASE if this system
2454 has a FILE structure declaring a usable _base field (or equivalent)
2457 d_stdstdio (d_stdstdio.U):
2458 This variable conditionally defines USE_STDIO_PTR if this system
2459 has a FILE structure declaring usable _ptr and _cnt fields (or
2460 equivalent) in stdio.h.
2462 d_strchr (d_strchr.U):
2463 This variable conditionally defines HAS_STRCHR if strchr() and
2464 strrchr() are available for string searching.
2466 d_strcoll (d_strcoll.U):
2467 This variable conditionally defines HAS_STRCOLL if strcoll() is
2468 available to compare strings using collating information.
2470 d_strctcpy (d_strctcpy.U):
2471 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2472 indicates to the C program that this C compiler knows how to copy
2475 d_strerrm (d_strerror.U):
2476 This variable holds what Strerror is defined as to translate an error
2477 code condition into an error message string. It could be 'strerror'
2478 or a more complex macro emulating strerror with sys_errlist[], or the
2479 "unknown" string when both strerror and sys_errlist are missing.
2481 d_strerror (d_strerror.U):
2482 This variable conditionally defines HAS_STRERROR if strerror() is
2483 available to translate error numbers to strings.
2485 d_strerror_r (d_strerror_r.U):
2486 This variable conditionally defines the HAS_STRERROR_R symbol,
2487 which indicates to the C program that the strerror_r()
2488 routine is available.
2490 d_strftime (d_strftime.U):
2491 This variable conditionally defines the HAS_STRFTIME symbol, which
2492 indicates to the C program that the strftime() routine is available.
2494 d_strlcat (d_strlcat.U):
2495 This variable conditionally defines the HAS_STRLCAT symbol, which
2496 indicates to the C program that the strlcat () routine is available.
2498 d_strlcpy (d_strlcpy.U):
2499 This variable conditionally defines the HAS_STRLCPY symbol, which
2500 indicates to the C program that the strlcpy () routine is available.
2502 d_strtod (d_strtod.U):
2503 This variable conditionally defines the HAS_STRTOD symbol, which
2504 indicates to the C program that the strtod() routine is available
2505 to provide better numeric string conversion than atof().
2507 d_strtol (d_strtol.U):
2508 This variable conditionally defines the HAS_STRTOL symbol, which
2509 indicates to the C program that the strtol() routine is available
2510 to provide better numeric string conversion than atoi() and friends.
2512 d_strtold (d_strtold.U):
2513 This variable conditionally defines the HAS_STRTOLD symbol, which
2514 indicates to the C program that the strtold() routine is available.
2516 d_strtoll (d_strtoll.U):
2517 This variable conditionally defines the HAS_STRTOLL symbol, which
2518 indicates to the C program that the strtoll() routine is available.
2520 d_strtoq (d_strtoq.U):
2521 This variable conditionally defines the HAS_STRTOQ symbol, which
2522 indicates to the C program that the strtoq() routine is available.
2524 d_strtoul (d_strtoul.U):
2525 This variable conditionally defines the HAS_STRTOUL symbol, which
2526 indicates to the C program that the strtoul() routine is available
2527 to provide conversion of strings to unsigned long.
2529 d_strtoull (d_strtoull.U):
2530 This variable conditionally defines the HAS_STRTOULL symbol, which
2531 indicates to the C program that the strtoull() routine is available.
2533 d_strtouq (d_strtouq.U):
2534 This variable conditionally defines the HAS_STRTOUQ symbol, which
2535 indicates to the C program that the strtouq() routine is available.
2537 d_strxfrm (d_strxfrm.U):
2538 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2539 available to transform strings.
2541 d_suidsafe (d_dosuid.U):
2542 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2543 if setuid scripts can be secure. This test looks in /dev/fd/.
2545 d_symlink (d_symlink.U):
2546 This variable conditionally defines the HAS_SYMLINK symbol, which
2547 indicates to the C program that the symlink() routine is available
2548 to create symbolic links.
2550 d_syscall (d_syscall.U):
2551 This variable conditionally defines HAS_SYSCALL if syscall() is
2552 available call arbitrary system calls.
2554 d_syscallproto (d_syscallproto.U):
2555 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2556 which indicates to the C program that the system provides
2557 a prototype for the syscall() function. Otherwise, it is
2558 up to the program to supply one.
2560 d_sysconf (d_sysconf.U):
2561 This variable conditionally defines the HAS_SYSCONF symbol, which
2562 indicates to the C program that the sysconf() routine is available
2563 to determine system related limits and options.
2565 d_sysernlst (d_strerror.U):
2566 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2567 is available to translate error numbers to the symbolic name.
2569 d_syserrlst (d_strerror.U):
2570 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2571 available to translate error numbers to strings.
2573 d_system (d_system.U):
2574 This variable conditionally defines HAS_SYSTEM if system() is
2575 available to issue a shell command.
2577 d_tcgetpgrp (d_tcgtpgrp.U):
2578 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2579 indicates to the C program that the tcgetpgrp() routine is available.
2580 to get foreground process group ID.
2582 d_tcsetpgrp (d_tcstpgrp.U):
2583 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2584 indicates to the C program that the tcsetpgrp() routine is available
2585 to set foreground process group ID.
2587 d_telldir (d_readdir.U):
2588 This variable conditionally defines HAS_TELLDIR if telldir() is
2591 d_telldirproto (d_telldirproto.U):
2592 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2593 which indicates to the C program that the system provides
2594 a prototype for the telldir() function. Otherwise, it is
2595 up to the program to supply one.
2597 d_tgamma (d_tgamma.U):
2598 This variable conditionally defines the HAS_TGAMMA symbol, which
2599 indicates to the C program that the tgamma() routine is available
2600 for the gamma function. See also d_lgamma.
2603 This variable conditionally defines the HAS_TIME symbol, which indicates
2604 that the time() routine exists. The time() routine is normally
2605 provided on UNIX systems.
2607 d_timegm (d_timegm.U):
2608 This variable conditionally defines the HAS_TIMEGM symbol, which
2609 indicates to the C program that the timegm () routine is available.
2611 d_times (d_times.U):
2612 This variable conditionally defines the HAS_TIMES symbol, which indicates
2613 that the times() routine exists. The times() routine is normally
2614 provided on UNIX systems. You may have to include <sys/times.h>.
2616 d_tm_tm_gmtoff (i_time.U):
2617 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2618 indicates to the C program that the struct tm has the tm_gmtoff field.
2620 d_tm_tm_zone (i_time.U):
2621 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2622 indicates to the C program that the struct tm has the tm_zone field.
2624 d_tmpnam_r (d_tmpnam_r.U):
2625 This variable conditionally defines the HAS_TMPNAM_R symbol,
2626 which indicates to the C program that the tmpnam_r()
2627 routine is available.
2629 d_trunc (d_trunc.U):
2630 This variable conditionally defines the HAS_TRUNC symbol, which
2631 indicates to the C program that the trunc() routine is available
2632 to round doubles towards zero.
2634 d_truncate (d_truncate.U):
2635 This variable conditionally defines HAS_TRUNCATE if truncate() is
2636 available to truncate files.
2638 d_truncl (d_truncl.U):
2639 This variable conditionally defines the HAS_TRUNCL symbol, which
2640 indicates to the C program that the truncl() routine is available
2641 to round long doubles towards zero. If copysignl is also present,
2642 we can emulate modfl.
2644 d_ttyname_r (d_ttyname_r.U):
2645 This variable conditionally defines the HAS_TTYNAME_R symbol,
2646 which indicates to the C program that the ttyname_r()
2647 routine is available.
2649 d_tzname (d_tzname.U):
2650 This variable conditionally defines HAS_TZNAME if tzname[] is
2651 available to access timezone names.
2653 d_u32align (d_u32align.U):
2654 This variable tells whether you must access character data
2655 through U32-aligned pointers.
2657 d_ualarm (d_ualarm.U):
2658 This variable conditionally defines the HAS_UALARM symbol, which
2659 indicates to the C program that the ualarm() routine is available.
2661 d_umask (d_umask.U):
2662 This variable conditionally defines the HAS_UMASK symbol, which
2663 indicates to the C program that the umask() routine is available.
2664 to set and get the value of the file creation mask.
2666 d_uname (d_gethname.U):
2667 This variable conditionally defines the HAS_UNAME symbol, which
2668 indicates to the C program that the uname() routine may be
2669 used to derive the host name.
2671 d_union_semun (d_union_semun.U):
2672 This variable conditionally defines HAS_UNION_SEMUN if the
2673 union semun is defined by including <sys/sem.h>.
2675 d_unordered (d_unordered.U):
2676 This variable conditionally defines the HAS_UNORDERED symbol, which
2677 indicates to the C program that the unordered() routine is available.
2679 d_unsetenv (d_unsetenv.U):
2680 This variable conditionally defines the HAS_UNSETENV symbol, which
2681 indicates to the C program that the unsetenv () routine is available.
2683 d_usleep (d_usleep.U):
2684 This variable conditionally defines HAS_USLEEP if usleep() is
2685 available to do high granularity sleeps.
2687 d_usleepproto (d_usleepproto.U):
2688 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2689 which indicates to the C program that the system provides
2690 a prototype for the usleep() function. Otherwise, it is
2691 up to the program to supply one.
2693 d_ustat (d_ustat.U):
2694 This variable conditionally defines HAS_USTAT if ustat() is
2695 available to query file system statistics by dev_t.
2697 d_vendorarch (vendorarch.U):
2698 This variable conditionally defined PERL_VENDORARCH.
2700 d_vendorbin (vendorbin.U):
2701 This variable conditionally defines PERL_VENDORBIN.
2703 d_vendorlib (vendorlib.U):
2704 This variable conditionally defines PERL_VENDORLIB.
2706 d_vendorscript (vendorscript.U):
2707 This variable conditionally defines PERL_VENDORSCRIPT.
2709 d_vfork (d_vfork.U):
2710 This variable conditionally defines the HAS_VFORK symbol, which
2711 indicates the vfork() routine is available.
2713 d_void_closedir (d_closedir.U):
2714 This variable conditionally defines VOID_CLOSEDIR if closedir()
2715 does not return a value.
2717 d_voidsig (d_voidsig.U):
2718 This variable conditionally defines VOIDSIG if this system
2719 declares "void (*signal(...))()" in signal.h. The old way was to
2720 declare it as "int (*signal(...))()".
2722 d_voidtty (i_sysioctl.U):
2723 This variable conditionally defines USE_IOCNOTTY to indicate that the
2724 ioctl() call with TIOCNOTTY should be used to void tty association.
2725 Otherwise (on USG probably), it is enough to close the standard file
2726 descriptors and do a setpgrp().
2728 d_volatile (d_volatile.U):
2729 This variable conditionally defines the HASVOLATILE symbol, which
2730 indicates to the C program that this C compiler knows about the
2731 volatile declaration.
2733 d_vprintf (d_vprintf.U):
2734 This variable conditionally defines the HAS_VPRINTF symbol, which
2735 indicates to the C program that the vprintf() routine is available
2736 to printf with a pointer to an argument list.
2738 d_vsnprintf (d_snprintf.U):
2739 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2740 indicates to the C program that the vsnprintf () library function
2743 d_wait4 (d_wait4.U):
2744 This variable conditionally defines the HAS_WAIT4 symbol, which
2745 indicates the wait4() routine is available.
2747 d_waitpid (d_waitpid.U):
2748 This variable conditionally defines HAS_WAITPID if waitpid() is
2749 available to wait for child process.
2751 d_wcscmp (d_wcscmp.U):
2752 This variable conditionally defines the HAS_WCSCMP symbol if the
2753 wcscmp() routine is available and can be used to compare wide
2756 d_wcstombs (d_wcstombs.U):
2757 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2758 indicates to the C program that the wcstombs() routine is available
2759 to convert wide character strings to multibyte strings.
2761 d_wcsxfrm (d_wcsxfrm.U):
2762 This variable conditionally defines the HAS_WCSXFRM symbol if the
2763 wcsxfrm() routine is available and can be used to compare wide
2766 d_wctomb (d_wctomb.U):
2767 This variable conditionally defines the HAS_WCTOMB symbol, which
2768 indicates to the C program that the wctomb() routine is available
2769 to convert a wide character to a multibyte.
2771 d_writev (d_writev.U):
2772 This variable conditionally defines the HAS_WRITEV symbol, which
2773 indicates to the C program that the writev() routine is available.
2776 This variable conditionally defines the symbol XENIX, which alerts
2777 the C program that it runs under Xenix.
2780 This variable is used internally by Configure to determine the
2781 full pathname (if any) of the date program. After Configure runs,
2782 the value is reset to a plain "date" and is not useful.
2784 db_hashtype (i_db.U):
2785 This variable contains the type of the hash structure element
2786 in the <db.h> header file. In older versions of DB, it was
2787 int, while in newer ones it is u_int32_t.
2789 db_prefixtype (i_db.U):
2790 This variable contains the type of the prefix structure element
2791 in the <db.h> header file. In older versions of DB, it was
2792 int, while in newer ones it is size_t.
2794 db_version_major (i_db.U):
2795 This variable contains the major version number of
2796 Berkeley DB found in the <db.h> header file.
2798 db_version_minor (i_db.U):
2799 This variable contains the minor version number of
2800 Berkeley DB found in the <db.h> header file.
2801 For DB version 1 this is always 0.
2803 db_version_patch (i_db.U):
2804 This variable contains the patch version number of
2805 Berkeley DB found in the <db.h> header file.
2806 For DB version 1 this is always 0.
2808 direntrytype (i_dirent.U):
2809 This symbol is set to 'struct direct' or 'struct dirent' depending on
2810 whether dirent is available or not. You should use this pseudo type to
2811 portably declare your directory entries.
2814 This variable contains the extension that is to be used for the
2815 dynamically loaded modules that perl generates.
2818 This variable contains the name of the dynamic loading file that
2819 will be used with the package.
2821 doublekind (longdblfio.U):
2822 This variable, if defined, encodes the type of a double:
2823 1 = IEEE 754 32-bit big little endian,
2824 2 = IEEE 754 32-bit big big endian,
2825 3 = IEEE 754 64-bit big little endian,
2826 4 = IEEE 754 64-bit big big endian,
2827 5 = IEEE 754 128-bit big little endian,
2828 6 = IEEE 754 128-bit big big endian,
2829 7 = IEEE 754 64-bit big mixed endian le-be,
2830 8 = IEEE 754 64-bit big mixed endian be-le,
2831 -1 = unknown format.
2833 doublesize (doublesize.U):
2834 This variable contains the value of the DOUBLESIZE symbol, which
2835 indicates to the C program how many bytes there are in a double.
2837 drand01 (randfunc.U):
2838 Indicates the macro to be used to generate normalized
2839 random numbers. Uses randfunc, often divided by
2840 (double) (((unsigned long) 1 << randbits)) in order to
2841 normalize the result.
2842 In C programs, the macro 'Drand01' is mapped to drand01.
2844 drand48_r_proto (d_drand48_r.U):
2845 This variable encodes the prototype of drand48_r.
2846 It is zero if d_drand48_r is undef, and one of the
2847 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2850 dtrace (usedtrace.U):
2851 This variable holds the location of the dtrace executable.
2853 dynamic_ext (Extensions.U):
2854 This variable holds a list of XS extension files we want to
2855 link dynamically into the package. It is used by Makefile.
2857 eagain (nblock_io.U):
2858 This variable bears the symbolic errno code set by read() when no
2859 data is present on the file and non-blocking I/O was enabled (otherwise,
2860 read() blocks naturally).
2863 This variable conditionally defines EBCDIC if this
2864 system uses EBCDIC encoding.
2867 This variable is used internally by Configure to determine the
2868 full pathname (if any) of the echo program. After Configure runs,
2869 the value is reset to a plain "echo" and is not useful.
2872 This variable is used internally by Configure to determine the
2873 full pathname (if any) of the egrep program. After Configure runs,
2874 the value is reset to a plain "egrep" and is not useful.
2877 This variable is defined but not used by Configure.
2878 The value is the empty string and is not useful.
2880 endgrent_r_proto (d_endgrent_r.U):
2881 This variable encodes the prototype of endgrent_r.
2882 It is zero if d_endgrent_r is undef, and one of the
2883 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2886 endhostent_r_proto (d_endhostent_r.U):
2887 This variable encodes the prototype of endhostent_r.
2888 It is zero if d_endhostent_r is undef, and one of the
2889 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2892 endnetent_r_proto (d_endnetent_r.U):
2893 This variable encodes the prototype of endnetent_r.
2894 It is zero if d_endnetent_r is undef, and one of the
2895 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2898 endprotoent_r_proto (d_endprotoent_r.U):
2899 This variable encodes the prototype of endprotoent_r.
2900 It is zero if d_endprotoent_r is undef, and one of the
2901 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2904 endpwent_r_proto (d_endpwent_r.U):
2905 This variable encodes the prototype of endpwent_r.
2906 It is zero if d_endpwent_r is undef, and one of the
2907 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2910 endservent_r_proto (d_endservent_r.U):
2911 This variable encodes the prototype of endservent_r.
2912 It is zero if d_endservent_r is undef, and one of the
2913 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2917 When running under Eunice this variable contains a command which will
2918 convert a shell script to the proper form of text file for it to be
2919 executable by the shell. On other systems it is a no-op.
2922 This is an old synonym for _exe.
2925 This variable is used internally by Configure to determine the
2926 full pathname (if any) of the expr program. After Configure runs,
2927 the value is reset to a plain "expr" and is not useful.
2929 extensions (Extensions.U):
2930 This variable holds a list of all extension files (both XS and
2931 non-xs) installed with the package. It is propagated to Config.pm
2932 and is typically used to test whether a particular extension
2936 ANSI C requires 'extern' where C++ requires 'extern "C"'. This
2937 variable can be used in Configure to do the right thing.
2940 This variable holds a list of extra modules to install.
2942 fflushall (fflushall.U):
2943 This symbol, if defined, tells that to flush
2944 all pending stdio output one must loop through all
2945 the stdio file handles stored in an array and fflush them.
2946 Note that if fflushNULL is defined, fflushall will not
2947 even be probed for and will be left undefined.
2949 fflushNULL (fflushall.U):
2950 This symbol, if defined, tells that fflush(NULL) correctly
2951 flushes all pending stdio output without side effects. In
2952 particular, on some platforms calling fflush(NULL) *still*
2953 corrupts STDIN if it is a pipe.
2956 This variable is defined but not used by Configure.
2957 The value is the empty string and is not useful.
2959 firstmakefile (Unix.U):
2960 This variable defines the first file searched by make. On unix,
2961 it is makefile (then Makefile). On case-insensitive systems,
2962 it might be something else. This is only used to deal with
2963 convoluted make depend tricks.
2966 This variable is defined but not used by Configure.
2967 The value is the empty string and is not useful.
2969 fpossize (fpossize.U):
2970 This variable contains the size of a fpostype in bytes.
2972 fpostype (fpostype.U):
2973 This variable defines Fpos_t to be something like fpos_t, long,
2974 uint, or whatever type is used to declare file positions in libc.
2976 freetype (mallocsrc.U):
2977 This variable contains the return type of free(). It is usually
2978 void, but occasionally int.
2981 This variable contains the command used by Configure
2982 to copy files from the target host. Useful and available
2983 only during Perl build.
2984 The string ':' if not cross-compiling.
2987 This variable contains the full pathname to 'ar', whether or
2988 not the user has specified 'portability'. This is only used
2992 This variable contains the full pathname to 'csh', whether or
2993 not the user has specified 'portability'. This is only used
2994 in the compiled C program, and we assume that all systems which
2995 can share this executable will have the same full pathname to
2998 full_sed (Loc_sed.U):
2999 This variable contains the full pathname to 'sed', whether or
3000 not the user has specified 'portability'. This is only used
3001 in the compiled C program, and we assume that all systems which
3002 can share this executable will have the same full pathname to
3005 gccansipedantic (gccvers.U):
3006 If GNU cc (gcc) is used, this variable will enable (if set) the
3007 -ansi and -pedantic ccflags for building core files (through
3008 cflags script). (See Porting/pumpkin.pod for full description).
3010 gccosandvers (gccvers.U):
3011 If GNU cc (gcc) is used, this variable holds the operating system
3012 and version used to compile gcc. It is set to '' if not gcc,
3013 or if nothing useful can be parsed as the os version.
3015 gccversion (gccvers.U):
3016 If GNU cc (gcc) is used, this variable holds '1' or '2' to
3017 indicate whether the compiler is version 1 or 2. This is used in
3018 setting some of the default cflags. It is set to '' if not gcc.
3020 getgrent_r_proto (d_getgrent_r.U):
3021 This variable encodes the prototype of getgrent_r.
3022 It is zero if d_getgrent_r is undef, and one of the
3023 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
3026 getgrgid_r_proto (d_getgrgid_r.U):
3027 This variable encodes the prototype of getgrgid_r.
3028 It is zero if d_getgrgid_r is undef, and one of the
3029 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
3032 getgrnam_r_proto (d_getgrnam_r.U):
3033 This variable encodes the prototype of getgrnam_r.
3034 It is zero if d_getgrnam_r is undef, and one of the
3035 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
3038 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
3039 This variable encodes the prototype of gethostbyaddr_r.
3040 It is zero if d_gethostbyaddr_r is undef, and one of the
3041 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
3044 gethostbyname_r_proto (d_gethostbyname_r.U):
3045 This variable encodes the prototype of gethostbyname_r.
3046 It is zero if d_gethostbyname_r is undef, and one of the
3047 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
3050 gethostent_r_proto (d_gethostent_r.U):
3051 This variable encodes the prototype of gethostent_r.
3052 It is zero if d_gethostent_r is undef, and one of the
3053 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
3056 getlogin_r_proto (d_getlogin_r.U):
3057 This variable encodes the prototype of getlogin_r.
3058 It is zero if d_getlogin_r is undef, and one of the
3059 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
3062 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
3063 This variable encodes the prototype of getnetbyaddr_r.
3064 It is zero if d_getnetbyaddr_r is undef, and one of the
3065 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
3068 getnetbyname_r_proto (d_getnetbyname_r.U):
3069 This variable encodes the prototype of getnetbyname_r.
3070 It is zero if d_getnetbyname_r is undef, and one of the
3071 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
3074 getnetent_r_proto (d_getnetent_r.U):
3075 This variable encodes the prototype of getnetent_r.
3076 It is zero if d_getnetent_r is undef, and one of the
3077 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
3080 getprotobyname_r_proto (d_getprotobyname_r.U):
3081 This variable encodes the prototype of getprotobyname_r.
3082 It is zero if d_getprotobyname_r is undef, and one of the
3083 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
3086 getprotobynumber_r_proto (d_getprotobynumber_r.U):
3087 This variable encodes the prototype of getprotobynumber_r.
3088 It is zero if d_getprotobynumber_r is undef, and one of the
3089 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
3092 getprotoent_r_proto (d_getprotoent_r.U):
3093 This variable encodes the prototype of getprotoent_r.
3094 It is zero if d_getprotoent_r is undef, and one of the
3095 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
3098 getpwent_r_proto (d_getpwent_r.U):
3099 This variable encodes the prototype of getpwent_r.
3100 It is zero if d_getpwent_r is undef, and one of the
3101 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
3104 getpwnam_r_proto (d_getpwnam_r.U):
3105 This variable encodes the prototype of getpwnam_r.
3106 It is zero if d_getpwnam_r is undef, and one of the
3107 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
3110 getpwuid_r_proto (d_getpwuid_r.U):
3111 This variable encodes the prototype of getpwuid_r.
3112 It is zero if d_getpwuid_r is undef, and one of the
3113 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
3116 getservbyname_r_proto (d_getservbyname_r.U):
3117 This variable encodes the prototype of getservbyname_r.
3118 It is zero if d_getservbyname_r is undef, and one of the
3119 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
3122 getservbyport_r_proto (d_getservbyport_r.U):
3123 This variable encodes the prototype of getservbyport_r.
3124 It is zero if d_getservbyport_r is undef, and one of the
3125 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
3128 getservent_r_proto (d_getservent_r.U):
3129 This variable encodes the prototype of getservent_r.
3130 It is zero if d_getservent_r is undef, and one of the
3131 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
3134 getspnam_r_proto (d_getspnam_r.U):
3135 This variable encodes the prototype of getspnam_r.
3136 It is zero if d_getspnam_r is undef, and one of the
3137 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
3141 This variable contains the format string used for printing a Gid_t.
3143 gidsign (gidsign.U):
3144 This variable contains the signedness of a gidtype.
3145 1 for unsigned, -1 for signed.
3147 gidsize (gidsize.U):
3148 This variable contains the size of a gidtype in bytes.
3150 gidtype (gidtype.U):
3151 This variable defines Gid_t to be something like gid_t, int,
3152 ushort, or whatever type is used to declare the return type
3153 of getgid(). Typically, it is the type of group ids in the kernel.
3156 This variable holds the general path (space-separated) used to
3157 find libraries. It may contain directories that do not exist on
3158 this platform, libpth is the cleaned-up version.
3161 This variable is used internally by Configure to determine the
3162 full pathname (if any) of the gmake program. After Configure runs,
3163 the value is reset to a plain "gmake" and is not useful.
3165 gmtime_r_proto (d_gmtime_r.U):
3166 This variable encodes the prototype of gmtime_r.
3167 It is zero if d_gmtime_r is undef, and one of the
3168 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
3171 gnulibc_version (d_gnulibc.U):
3172 This variable contains the version number of the GNU C library.
3173 It is usually something like '2.2.5'. It is a plain '' if this
3174 is not the GNU C library, or if the version is unknown.
3177 This variable is used internally by Configure to determine the
3178 full pathname (if any) of the grep program. After Configure runs,
3179 the value is reset to a plain "grep" and is not useful.
3182 This variable contains a command that produces the text of the
3183 /etc/group file. This is normally "cat /etc/group", but can be
3184 "ypcat group" when NIS is used.
3185 On some systems, such as os390, there may be no equivalent
3186 command, in which case this variable is unset.
3188 groupstype (groupstype.U):
3189 This variable defines Groups_t to be something like gid_t, int,
3190 ushort, or whatever type is used for the second argument to
3191 getgroups() and setgroups(). Usually, this is the same as
3192 gidtype (gid_t), but sometimes it isn't.
3195 This variable is used internally by Configure to determine the
3196 full pathname (if any) of the gzip program. After Configure runs,
3197 the value is reset to a plain "gzip" and is not useful.
3199 h_fcntl (h_fcntl.U):
3200 This is variable gets set in various places to tell i_fcntl that
3201 <fcntl.h> should be included.
3203 h_sysfile (h_sysfile.U):
3204 This is variable gets set in various places to tell i_sys_file that
3205 <sys/file.h> should be included.
3208 Gives the type of hints used for previous answers. May be one of
3209 "default", "recommended" or "previous".
3212 This variable contains a command that produces the text of the
3213 /etc/hosts file. This is normally "cat /etc/hosts", but can be
3214 "ypcat hosts" when NIS is used.
3215 On some systems, such as os390, there may be no equivalent
3216 command, in which case this variable is unset.
3218 hostgenerate (Cross.U):
3219 This variable contains the path to a generate_uudmap binary that
3220 can be run on the host OS when cross-compiling. Useful and
3221 available only during Perl build.
3222 Empty string '' if not cross-compiling.
3224 hostosname (Cross.U):
3225 This variable contains the original value of '$^O' for hostperl
3226 when cross-compiling. This is useful to pick the proper tools
3227 when running build code in the host.
3228 Empty string '' if not cross-compiling.
3231 This variable contains the path to a miniperl binary that can be
3232 run on the host OS when cross-compiling. Useful and available only
3234 Empty string '' if not cross-compiling.
3236 html1dir (html1dir.U):
3237 This variable contains the name of the directory in which html
3238 source pages are to be put. This directory is for pages
3239 that describe whole programs, not libraries or modules. It
3240 is intended to correspond roughly to section 1 of the Unix
3243 html1direxp (html1dir.U):
3244 This variable is the same as the html1dir variable, but is filename
3245 expanded at configuration time, for convenient use in makefiles.
3247 html3dir (html3dir.U):
3248 This variable contains the name of the directory in which html
3249 source pages are to be put. This directory is for pages
3250 that describe libraries or modules. It is intended to
3251 correspond roughly to section 3 of the Unix manuals.
3253 html3direxp (html3dir.U):
3254 This variable is the same as the html3dir variable, but is filename
3255 expanded at configuration time, for convenient use in makefiles.
3258 This variable is the size of an I16 in bytes.
3261 This variable contains the C type used for Perl's I16.
3264 This variable is the size of an I32 in bytes.
3267 This variable contains the C type used for Perl's I32.
3270 This variable is the size of an I64 in bytes.
3273 This variable contains the C type used for Perl's I64.
3276 This variable is the size of an I8 in bytes.
3279 This variable contains the C type used for Perl's I8.
3281 i_arpainet (i_arpainet.U):
3282 This variable conditionally defines the I_ARPA_INET symbol,
3283 and indicates whether a C program should include <arpa/inet.h>.
3285 i_assert (i_assert.U):
3286 This variable conditionally defines the I_ASSERT symbol, which
3287 indicates to the C program that <assert.h> exists and could be
3291 This variable conditionally defines the I_BFD symbol, and
3292 indicates whether a C program can include <bfd.h>.
3294 i_bsdioctl (i_sysioctl.U):
3295 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
3296 indicates to the C program that <sys/bsdioctl.h> exists and should
3299 i_crypt (i_crypt.U):
3300 This variable conditionally defines the I_CRYPT symbol, and indicates
3301 whether a C program should include <crypt.h>.
3304 This variable conditionally defines the I_DB symbol, and indicates
3305 whether a C program may include Berkeley's DB include file <db.h>.
3308 This variable conditionally defines the I_DBM symbol, which
3309 indicates to the C program that <dbm.h> exists and should
3312 i_dirent (i_dirent.U):
3313 This variable conditionally defines I_DIRENT, which indicates
3314 to the C program that it should include <dirent.h>.
3316 i_dlfcn (i_dlfcn.U):
3317 This variable conditionally defines the I_DLFCN symbol, which
3318 indicates to the C program that <dlfcn.h> exists and should
3321 i_execinfo (i_execinfo.U):
3322 This variable conditionally defines the I_EXECINFO symbol, and indicates
3323 whether a C program may include <execinfo.h>, for backtrace() support.
3325 i_fcntl (i_fcntl.U):
3326 This variable controls the value of I_FCNTL (which tells
3327 the C program to include <fcntl.h>).
3330 This variable conditionally defines the I_FENV symbol, which
3331 indicates to the C program that <fenv.h> exists and should
3334 i_float (i_float.U):
3335 This variable conditionally defines the I_FLOAT symbol, and indicates
3336 whether a C program may include <float.h> to get symbols like DBL_MAX
3337 or DBL_MIN, i.e. machine dependent floating point values.
3340 This variable conditionally defines the I_FP symbol, and indicates
3341 whether a C program should include <fp.h>.
3343 i_fp_class (i_fp_class.U):
3344 This variable conditionally defines the I_FP_CLASS symbol, and indicates
3345 whether a C program should include <fp_class.h>.
3348 This variable conditionally defines the I_GDBM symbol, which
3349 indicates to the C program that <gdbm.h> exists and should
3352 i_gdbm_ndbm (i_ndbm.U):
3353 This variable conditionally defines the I_GDBM_NDBM symbol, which
3354 indicates to the C program that <gdbm-ndbm.h> exists and should
3355 be included. This is the location of the ndbm.h compatibility file
3358 i_gdbmndbm (i_ndbm.U):
3359 This variable conditionally defines the I_GDBMNDBM symbol, which
3360 indicates to the C program that <gdbm/ndbm.h> exists and should
3361 be included. This was the location of the ndbm.h compatibility file
3365 This variable conditionally defines the I_GRP symbol, and indicates
3366 whether a C program should include <grp.h>.
3368 i_ieeefp (i_ieeefp.U):
3369 This variable conditionally defines the I_IEEEFP symbol, and indicates
3370 whether a C program should include <ieeefp.h>.
3372 i_inttypes (i_inttypes.U):
3373 This variable conditionally defines the I_INTTYPES symbol,
3374 and indicates whether a C program should include <inttypes.h>.
3376 i_langinfo (i_langinfo.U):
3377 This variable conditionally defines the I_LANGINFO symbol,
3378 and indicates whether a C program should include <langinfo.h>.
3380 i_libutil (i_libutil.U):
3381 This variable conditionally defines the I_LIBUTIL symbol, and indicates
3382 whether a C program should include <libutil.h>.
3384 i_limits (i_limits.U):
3385 This variable conditionally defines the I_LIMITS symbol, and indicates
3386 whether a C program may include <limits.h> to get symbols like WORD_BIT
3389 i_locale (i_locale.U):
3390 This variable conditionally defines the I_LOCALE symbol,
3391 and indicates whether a C program should include <locale.h>.
3393 i_machcthr (i_machcthr.U):
3394 This variable conditionally defines the I_MACH_CTHREADS symbol,
3395 and indicates whether a C program should include <mach/cthreads.h>.
3397 i_malloc (i_malloc.U):
3398 This variable conditionally defines the I_MALLOC symbol, and indicates
3399 whether a C program should include <malloc.h>.
3401 i_mallocmalloc (i_mallocmalloc.U):
3402 This variable conditionally defines the I_MALLOCMALLOC symbol,
3403 and indicates whether a C program should include <malloc/malloc.h>.
3406 This variable conditionally defines the I_MATH symbol, and indicates
3407 whether a C program may include <math.h>.
3409 i_memory (i_memory.U):
3410 This variable conditionally defines the I_MEMORY symbol, and indicates
3411 whether a C program should include <memory.h>.
3413 i_mntent (i_mntent.U):
3414 This variable conditionally defines the I_MNTENT symbol, and indicates
3415 whether a C program should include <mntent.h>.
3418 This variable conditionally defines the I_NDBM symbol, which
3419 indicates to the C program that <ndbm.h> exists and should
3422 i_netdb (i_netdb.U):
3423 This variable conditionally defines the I_NETDB symbol, and indicates
3424 whether a C program should include <netdb.h>.
3426 i_neterrno (i_neterrno.U):
3427 This variable conditionally defines the I_NET_ERRNO symbol, which
3428 indicates to the C program that <net/errno.h> exists and should
3431 i_netinettcp (i_netinettcp.U):
3432 This variable conditionally defines the I_NETINET_TCP symbol,
3433 and indicates whether a C program should include <netinet/tcp.h>.
3436 This variable conditionally defines I_NETINET_IN, which indicates
3437 to the C program that it should include <netinet/in.h>. Otherwise,
3438 you may try <sys/in.h>.
3441 This variable conditionally defines the I_POLL symbol, and indicates
3442 whether a C program should include <poll.h>.
3445 This variable conditionally defines the I_PROT symbol, and indicates
3446 whether a C program should include <prot.h>.
3448 i_pthread (i_pthread.U):
3449 This variable conditionally defines the I_PTHREAD symbol,
3450 and indicates whether a C program should include <pthread.h>.
3453 This variable conditionally defines I_PWD, which indicates
3454 to the C program that it should include <pwd.h>.
3456 i_quadmath (i_quadmath.U):
3457 This variable conditionally defines I_QUADMATH, which indicates
3458 to the C program that it should include <quadmath.h>.
3460 i_rpcsvcdbm (i_dbm.U):
3461 This variable conditionally defines the I_RPCSVC_DBM symbol, which
3462 indicates to the C program that <rpcsvc/dbm.h> exists and should
3463 be included. Some System V systems might need this instead of <dbm.h>.
3465 i_sgtty (i_termio.U):
3466 This variable conditionally defines the I_SGTTY symbol, which
3467 indicates to the C program that it should include <sgtty.h> rather
3470 i_shadow (i_shadow.U):
3471 This variable conditionally defines the I_SHADOW symbol, and indicates
3472 whether a C program should include <shadow.h>.
3474 i_socks (i_socks.U):
3475 This variable conditionally defines the I_SOCKS symbol, and indicates
3476 whether a C program should include <socks.h>.
3478 i_stdarg (i_varhdr.U):
3479 This variable conditionally defines the I_STDARG symbol, which
3480 indicates to the C program that <stdarg.h> exists and should
3483 i_stdbool (i_stdbool.U):
3484 This variable conditionally defines the I_STDBOOL symbol, which
3485 indicates to the C program that <stdbool.h> exists and should
3488 i_stddef (i_stddef.U):
3489 This variable conditionally defines the I_STDDEF symbol, which
3490 indicates to the C program that <stddef.h> exists and should
3493 i_stdint (i_stdint.U):
3494 This variable conditionally defines the I_STDINT symbol, which
3495 indicates to the C program that <stdint.h> exists and should
3498 i_stdlib (i_stdlib.U):
3499 This variable conditionally defines the I_STDLIB symbol, which
3500 indicates to the C program that <stdlib.h> exists and should
3503 i_string (i_string.U):
3504 This variable conditionally defines the I_STRING symbol, which
3505 indicates that <string.h> should be included rather than <strings.h>.
3507 i_sunmath (i_sunmath.U):
3508 This variable conditionally defines the I_SUNMATH symbol, and indicates
3509 whether a C program should include <sunmath.h>.
3511 i_sysaccess (i_sysaccess.U):
3512 This variable conditionally defines the I_SYS_ACCESS symbol,
3513 and indicates whether a C program should include <sys/access.h>.
3515 i_sysdir (i_sysdir.U):
3516 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3517 whether a C program should include <sys/dir.h>.
3519 i_sysfile (i_sysfile.U):
3520 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3521 whether a C program should include <sys/file.h> to get R_OK and friends.
3523 i_sysfilio (i_sysioctl.U):
3524 This variable conditionally defines the I_SYS_FILIO symbol, which
3525 indicates to the C program that <sys/filio.h> exists and should
3526 be included in preference to <sys/ioctl.h>.
3529 This variable conditionally defines I_SYS_IN, which indicates
3530 to the C program that it should include <sys/in.h> instead of
3533 i_sysioctl (i_sysioctl.U):
3534 This variable conditionally defines the I_SYS_IOCTL symbol, which
3535 indicates to the C program that <sys/ioctl.h> exists and should
3538 i_syslog (i_syslog.U):
3539 This variable conditionally defines the I_SYSLOG symbol,
3540 and indicates whether a C program should include <syslog.h>.
3542 i_sysmman (i_sysmman.U):
3543 This variable conditionally defines the I_SYS_MMAN symbol, and
3544 indicates whether a C program should include <sys/mman.h>.
3546 i_sysmode (i_sysmode.U):
3547 This variable conditionally defines the I_SYSMODE symbol,
3548 and indicates whether a C program should include <sys/mode.h>.
3550 i_sysmount (i_sysmount.U):
3551 This variable conditionally defines the I_SYSMOUNT symbol,
3552 and indicates whether a C program should include <sys/mount.h>.
3554 i_sysndir (i_sysndir.U):
3555 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3556 whether a C program should include <sys/ndir.h>.
3558 i_sysparam (i_sysparam.U):
3559 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3560 whether a C program should include <sys/param.h>.
3562 i_syspoll (i_syspoll.U):
3563 This variable conditionally defines the I_SYS_POLL symbol, which
3564 indicates to the C program that it should include <sys/poll.h>.
3566 i_sysresrc (i_sysresrc.U):
3567 This variable conditionally defines the I_SYS_RESOURCE symbol,
3568 and indicates whether a C program should include <sys/resource.h>.
3570 i_syssecrt (i_syssecrt.U):
3571 This variable conditionally defines the I_SYS_SECURITY symbol,
3572 and indicates whether a C program should include <sys/security.h>.
3574 i_sysselct (i_sysselct.U):
3575 This variable conditionally defines I_SYS_SELECT, which indicates
3576 to the C program that it should include <sys/select.h> in order to
3577 get the definition of struct timeval.
3579 i_syssockio (i_sysioctl.U):
3580 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3581 C program that socket ioctl codes may be found in <sys/sockio.h>
3582 instead of <sys/ioctl.h>.
3584 i_sysstat (i_sysstat.U):
3585 This variable conditionally defines the I_SYS_STAT symbol,
3586 and indicates whether a C program should include <sys/stat.h>.
3588 i_sysstatfs (i_sysstatfs.U):
3589 This variable conditionally defines the I_SYSSTATFS symbol,
3590 and indicates whether a C program should include <sys/statfs.h>.
3592 i_sysstatvfs (i_sysstatvfs.U):
3593 This variable conditionally defines the I_SYSSTATVFS symbol,
3594 and indicates whether a C program should include <sys/statvfs.h>.
3596 i_systime (i_time.U):
3597 This variable conditionally defines I_SYS_TIME, which indicates
3598 to the C program that it should include <sys/time.h>.
3600 i_systimek (i_time.U):
3601 This variable conditionally defines I_SYS_TIME_KERNEL, which
3602 indicates to the C program that it should include <sys/time.h>
3603 with KERNEL defined.
3605 i_systimes (i_systimes.U):
3606 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3607 whether a C program should include <sys/times.h>.
3609 i_systypes (i_systypes.U):
3610 This variable conditionally defines the I_SYS_TYPES symbol,
3611 and indicates whether a C program should include <sys/types.h>.
3613 i_sysuio (i_sysuio.U):
3614 This variable conditionally defines the I_SYSUIO symbol, and indicates
3615 whether a C program should include <sys/uio.h>.
3617 i_sysun (i_sysun.U):
3618 This variable conditionally defines I_SYS_UN, which indicates
3619 to the C program that it should include <sys/un.h> to get UNIX
3620 domain socket definitions.
3622 i_sysutsname (i_sysutsname.U):
3623 This variable conditionally defines the I_SYSUTSNAME symbol,
3624 and indicates whether a C program should include <sys/utsname.h>.
3626 i_sysvfs (i_sysvfs.U):
3627 This variable conditionally defines the I_SYSVFS symbol,
3628 and indicates whether a C program should include <sys/vfs.h>.
3630 i_syswait (i_syswait.U):
3631 This variable conditionally defines I_SYS_WAIT, which indicates
3632 to the C program that it should include <sys/wait.h>.
3634 i_termio (i_termio.U):
3635 This variable conditionally defines the I_TERMIO symbol, which
3636 indicates to the C program that it should include <termio.h> rather
3639 i_termios (i_termio.U):
3640 This variable conditionally defines the I_TERMIOS symbol, which
3641 indicates to the C program that the POSIX <termios.h> file is
3645 This variable conditionally defines I_TIME, which indicates
3646 to the C program that it should include <time.h>.
3648 i_unistd (i_unistd.U):
3649 This variable conditionally defines the I_UNISTD symbol, and indicates
3650 whether a C program should include <unistd.h>.
3652 i_ustat (i_ustat.U):
3653 This variable conditionally defines the I_USTAT symbol, and indicates
3654 whether a C program should include <ustat.h>.
3656 i_utime (i_utime.U):
3657 This variable conditionally defines the I_UTIME symbol, and indicates
3658 whether a C program should include <utime.h>.
3660 i_values (i_values.U):
3661 This variable conditionally defines the I_VALUES symbol, and indicates
3662 whether a C program may include <values.h> to get symbols like MAXLONG
3665 i_varargs (i_varhdr.U):
3666 This variable conditionally defines I_VARARGS, which indicates
3667 to the C program that it should include <varargs.h>.
3669 i_varhdr (i_varhdr.U):
3670 Contains the name of the header to be included to get va_dcl definition.
3671 Typically one of varargs.h or stdarg.h.
3673 i_vfork (i_vfork.U):
3674 This variable conditionally defines the I_VFORK symbol, and indicates
3675 whether a C program should include vfork.h.
3677 ignore_versioned_solibs (libs.U):
3678 This variable should be non-empty if non-versioned shared
3679 libraries (libfoo.so.x.y) are to be ignored (because they
3680 cannot be linked against).
3682 inc_version_list (inc_version_list.U):
3683 This variable specifies the list of subdirectories in over
3684 which perl.c:incpush() and lib/lib.pm will automatically
3685 search when adding directories to @INC. The elements in
3686 the list are separated by spaces. This is only useful
3687 if you have a perl library directory tree structured like the
3688 default one. See INSTALL for how this works. The versioned
3689 site_perl directory was introduced in 5.005, so that is the
3690 lowest possible value.
3692 This list includes architecture-dependent directories back to
3693 version $api_versionstring (e.g. 5.5.640) and
3694 architecture-independent directories all the way back to
3697 inc_version_list_init (inc_version_list.U):
3698 This variable holds the same list as inc_version_list, but
3699 each item is enclosed in double quotes and separated by commas,
3700 suitable for use in the PERL_INC_VERSION_LIST initialization.
3703 This variable must precede the normal include path to get the
3704 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3705 Value can be "" or "/bsd43" on mips.
3708 This variable must precede the normal include path to get the
3709 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3710 Value can be "" or "/bsd43" on mips.
3713 This variable is defined but not used by Configure.
3714 The value is the empty string and is not useful.
3716 initialinstalllocation (bin.U):
3717 When userelocatableinc is true, this variable holds the location
3718 that make install should copy the perl binary to, with all the
3719 run-time relocatable paths calculated from this at install time.
3720 When used, it is initialized to the original value of binexp, and
3721 then binexp is set to '.../', as the other binaries are found
3722 relative to the perl binary.
3724 installarchlib (archlib.U):
3725 This variable is really the same as archlibexp but may differ on
3726 those systems using AFS. For extra portability, only this variable
3727 should be used in makefiles.
3730 This variable is the same as binexp unless AFS is running in which case
3731 the user is explicitly prompted for it. This variable should always
3732 be used in your makefiles for maximum portability.
3734 installhtml1dir (html1dir.U):
3735 This variable is really the same as html1direxp, unless you are
3736 using a different installprefix. For extra portability, you
3737 should only use this variable within your makefiles.
3739 installhtml3dir (html3dir.U):
3740 This variable is really the same as html3direxp, unless you are
3741 using a different installprefix. For extra portability, you
3742 should only use this variable within your makefiles.
3744 installman1dir (man1dir.U):
3745 This variable is really the same as man1direxp, unless you are using
3746 AFS in which case it points to the read/write location whereas
3747 man1direxp only points to the read-only access location. For extra
3748 portability, you should only use this variable within your makefiles.
3750 installman3dir (man3dir.U):
3751 This variable is really the same as man3direxp, unless you are using
3752 AFS in which case it points to the read/write location whereas
3753 man3direxp only points to the read-only access location. For extra
3754 portability, you should only use this variable within your makefiles.
3756 installprefix (installprefix.U):
3757 This variable holds the name of the directory below which
3758 "make install" will install the package. For most users, this
3759 is the same as prefix. However, it is useful for
3760 installing the software into a different (usually temporary)
3761 location after which it can be bundled up and moved somehow
3762 to the final location specified by prefix.
3764 installprefixexp (installprefix.U):
3765 This variable holds the full absolute path of installprefix
3766 with all ~-expansion done.
3768 installprivlib (privlib.U):
3769 This variable is really the same as privlibexp but may differ on
3770 those systems using AFS. For extra portability, only this variable
3771 should be used in makefiles.
3773 installscript (scriptdir.U):
3774 This variable is usually the same as scriptdirexp, unless you are on
3775 a system running AFS, in which case they may differ slightly. You
3776 should always use this variable within your makefiles for portability.
3778 installsitearch (sitearch.U):
3779 This variable is really the same as sitearchexp but may differ on
3780 those systems using AFS. For extra portability, only this variable
3781 should be used in makefiles.
3783 installsitebin (sitebin.U):
3784 This variable is usually the same as sitebinexp, unless you are on
3785 a system running AFS, in which case they may differ slightly. You
3786 should always use this variable within your makefiles for portability.
3788 installsitehtml1dir (sitehtml1dir.U):
3789 This variable is really the same as sitehtml1direxp, unless you are using
3790 AFS in which case it points to the read/write location whereas
3791 html1direxp only points to the read-only access location. For extra
3792 portability, you should only use this variable within your makefiles.
3794 installsitehtml3dir (sitehtml3dir.U):
3795 This variable is really the same as sitehtml3direxp, unless you are using
3796 AFS in which case it points to the read/write location whereas
3797 html3direxp only points to the read-only access location. For extra
3798 portability, you should only use this variable within your makefiles.
3800 installsitelib (sitelib.U):
3801 This variable is really the same as sitelibexp but may differ on
3802 those systems using AFS. For extra portability, only this variable
3803 should be used in makefiles.
3805 installsiteman1dir (siteman1dir.U):
3806 This variable is really the same as siteman1direxp, unless you are using
3807 AFS in which case it points to the read/write location whereas
3808 man1direxp only points to the read-only access location. For extra
3809 portability, you should only use this variable within your makefiles.
3811 installsiteman3dir (siteman3dir.U):
3812 This variable is really the same as siteman3direxp, unless you are using
3813 AFS in which case it points to the read/write location whereas
3814 man3direxp only points to the read-only access location. For extra
3815 portability, you should only use this variable within your makefiles.
3817 installsitescript (sitescript.U):
3818 This variable is usually the same as sitescriptexp, unless you are on
3819 a system running AFS, in which case they may differ slightly. You
3820 should always use this variable within your makefiles for portability.
3822 installstyle (installstyle.U):
3823 This variable describes the "style" of the perl installation.
3824 This is intended to be useful for tools that need to
3825 manipulate entire perl distributions. Perl itself doesn't use
3826 this to find its libraries -- the library directories are
3827 stored directly in Config.pm. Currently, there are only two
3828 styles: "lib" and "lib/perl5". The default library locations
3829 (e.g. privlib, sitelib) are either $prefix/lib or
3830 $prefix/lib/perl5. The former is useful if $prefix is a
3831 directory dedicated to perl (e.g. /opt/perl), while the latter
3832 is useful if $prefix is shared by many packages, e.g. if
3835 Unfortunately, while this "style" variable is used to set
3836 defaults for all three directory hierarchies (core, vendor, and
3837 site), there is no guarantee that the same style is actually
3838 appropriate for all those directories. For example, $prefix
3839 might be /opt/perl, but $siteprefix might be /usr/local.
3840 (Perhaps, in retrospect, the "lib" style should never have been
3841 supported, but it did seem like a nice idea at the time.)
3843 The situation is even less clear for tools such as MakeMaker
3844 that can be used to install additional modules into
3845 non-standard places. For example, if a user intends to install
3846 a module into a private directory (perhaps by setting PREFIX on
3847 the Makefile.PL command line), then there is no reason to
3848 assume that the Configure-time $installstyle setting will be
3849 relevant for that PREFIX.
3851 This may later be extended to include other information, so
3852 be careful with pattern-matching on the results.
3854 For compatibility with perl5.005 and earlier, the default
3855 setting is based on whether or not $prefix contains the string
3858 installusrbinperl (instubperl.U):
3859 This variable tells whether Perl should be installed also as
3860 /usr/bin/perl in addition to
3863 installvendorarch (vendorarch.U):
3864 This variable is really the same as vendorarchexp but may differ on
3865 those systems using AFS. For extra portability, only this variable
3866 should be used in makefiles.
3868 installvendorbin (vendorbin.U):
3869 This variable is really the same as vendorbinexp but may differ on
3870 those systems using AFS. For extra portability, only this variable
3871 should be used in makefiles.
3873 installvendorhtml1dir (vendorhtml1dir.U):
3874 This variable is really the same as vendorhtml1direxp but may differ on
3875 those systems using AFS. For extra portability, only this variable
3876 should be used in makefiles.
3878 installvendorhtml3dir (vendorhtml3dir.U):
3879 This variable is really the same as vendorhtml3direxp but may differ on
3880 those systems using AFS. For extra portability, only this variable
3881 should be used in makefiles.
3883 installvendorlib (vendorlib.U):
3884 This variable is really the same as vendorlibexp but may differ on
3885 those systems using AFS. For extra portability, only this variable
3886 should be used in makefiles.
3888 installvendorman1dir (vendorman1dir.U):
3889 This variable is really the same as vendorman1direxp but may differ on
3890 those systems using AFS. For extra portability, only this variable
3891 should be used in makefiles.
3893 installvendorman3dir (vendorman3dir.U):
3894 This variable is really the same as vendorman3direxp but may differ on
3895 those systems using AFS. For extra portability, only this variable
3896 should be used in makefiles.
3898 installvendorscript (vendorscript.U):
3899 This variable is really the same as vendorscriptexp but may differ on
3900 those systems using AFS. For extra portability, only this variable
3901 should be used in makefiles.
3903 intsize (intsize.U):
3904 This variable contains the value of the INTSIZE symbol, which
3905 indicates to the C program how many bytes there are in an int.
3907 issymlink (issymlink.U):
3908 This variable holds the test command to test for a symbolic link
3909 (if they are supported). Typical values include 'test -h' and
3912 ivdformat (perlxvf.U):
3913 This variable contains the format string used for printing
3914 a Perl IV as a signed decimal integer.
3917 This variable is the size of an IV in bytes.
3920 This variable contains the C type used for Perl's IV.
3922 known_extensions (Extensions.U):
3923 This variable holds a list of all extensions (both XS and non-xs)
3924 included in the package source distribution. This information is
3925 only really of use during the Perl build, as the list makes no
3926 distinction between extensions which were build and installed, and
3927 those which where not. See "extensions" for the list of extensions
3928 actually built and available.
3931 This variable is defined but not used by Configure.
3932 The value is the empty string and is not useful.
3935 This variable indicates the program to be used to link
3936 libraries for dynamic loading. On some systems, it is 'ld'.
3937 On ELF systems, it should be $cc. Mostly, we'll try to respect
3938 the hint file setting.
3940 ld_can_script (dlsrc.U):
3941 This variable shows if the loader accepts scripts in the form of
3942 -Wl,--version-script=ld.script. This is currently only supported
3943 for GNU ld on ELF in dynamic loading builds.
3945 lddlflags (dlsrc.U):
3946 This variable contains any special flags that might need to be
3947 passed to $ld to create a shared library suitable for dynamic
3948 loading. It is up to the makefile to use it. For hpux, it
3949 should be '-b'. For sunos 4.1, it is empty.
3951 ldflags (ccflags.U):
3952 This variable contains any additional C loader flags desired by
3953 the user. It is up to the Makefile to use this.
3955 ldflags_uselargefiles (uselfs.U):
3956 This variable contains the loader flags needed by large file builds
3957 and added to ldflags by hints files.
3959 ldlibpthname (libperl.U):
3960 This variable holds the name of the shared library
3961 search path, often LD_LIBRARY_PATH. To get an empty
3962 string, the hints file must set this to 'none'.
3965 This variable is used internally by Configure to determine the
3966 full pathname (if any) of the less program. After Configure runs,
3967 the value is reset to a plain "less" and is not useful.
3970 This is an old synonym for _a.
3973 This variable contains the location of the C library.
3975 libperl (libperl.U):
3976 The perl executable is obtained by linking perlmain.c with
3977 libperl, any static extensions (usually just DynaLoader),
3978 and any other libraries needed on this system. libperl
3979 is usually libperl.a, but can also be libperl.so.xxx if
3980 the user wishes to build a perl executable with a shared
3984 This variable holds the general path (space-separated) used to find
3985 libraries. It is intended to be used by other units.
3988 This variable holds the additional libraries we want to use.
3989 It is up to the Makefile to deal with it. The list can be empty.
3992 This variable holds the directory names aka dirnames of the libraries
3993 we found and accepted, duplicates are removed.
3996 This variable holds the filenames aka basenames of the libraries
3997 we found and accepted.
4000 This variable holds the full pathnames of the libraries
4001 we found and accepted.
4004 This variable holds the directory names probed for libraries.
4006 libswanted (Myinit.U):
4007 This variable holds a list of all the libraries we want to
4008 search. The order is chosen to pick up the c library
4009 ahead of ucb or bsd libraries for SVR4.
4011 libswanted_uselargefiles (uselfs.U):
4012 This variable contains the libraries needed by large file builds
4013 and added to ldflags by hints files. It is a space separated list
4014 of the library names without the "lib" prefix or any suffix, just
4018 This variable is defined but not used by Configure.
4019 The value is the empty string and is not useful.
4022 This variable is defined but not used by Configure.
4023 The value is the empty string and is not useful.
4025 lkflags (ccflags.U):
4026 This variable contains any additional C partial linker flags desired by
4027 the user. It is up to the Makefile to use this.
4030 This variable is used internally by Configure to determine the
4031 full pathname (if any) of the ln program. After Configure runs,
4032 the value is reset to a plain "ln" and is not useful.
4035 This variable holds the name of the command to make
4036 symbolic links (if they are supported). It can be used
4037 in the Makefile. It is either 'ln -s' or 'ln'
4039 localtime_r_proto (d_localtime_r.U):
4040 This variable encodes the prototype of localtime_r.
4041 It is zero if d_localtime_r is undef, and one of the
4042 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
4045 locincpth (ccflags.U):
4046 This variable contains a list of additional directories to be
4047 searched by the compiler. The appropriate '-I' directives will
4048 be added to ccflags. This is intended to simplify setting
4049 local directories from the Configure command line.
4050 It's not much, but it parallels the loclibpth stuff in libpth.U.
4052 loclibpth (libpth.U):
4053 This variable holds the paths (space-separated) used to find local
4054 libraries. It is prepended to libpth, and is intended to be easily
4055 set from the command line.
4057 longdblkind (d_longdbl.U):
4058 This variable, if defined, encodes the type of a long double:
4059 0 = double, 1 = IEEE 754 128-bit big little endian,
4060 2 = IEEE 754 128-bit big big endian, 3 = x86 80-bit little endian,
4061 4 = x86 80-bit big endian, 5 = double-double 128-bit little endian,
4062 6 = double-double 128-bit big endian, -1 = unknown format.
4064 longdblsize (d_longdbl.U):
4065 This variable contains the value of the LONG_DOUBLESIZE symbol, which
4066 indicates to the C program how many bytes there are in a long double,
4067 if this system supports long doubles.
4069 longlongsize (d_longlong.U):
4070 This variable contains the value of the LONGLONGSIZE symbol, which
4071 indicates to the C program how many bytes there are in a long long,
4072 if this system supports long long.
4074 longsize (intsize.U):
4075 This variable contains the value of the LONGSIZE symbol, which
4076 indicates to the C program how many bytes there are in a long.
4079 This variable is defined but not used by Configure.
4080 The value is the empty string and is not useful.
4083 This variable is defined but not used by Configure.
4084 The value is the empty string and is not useful.
4087 This variable is used internally by Configure to determine the
4088 full pathname (if any) of the ls program. After Configure runs,
4089 the value is reset to a plain "ls" and is not useful.
4091 lseeksize (lseektype.U):
4092 This variable defines lseektype to be something like off_t, long,
4093 or whatever type is used to declare lseek offset's type in the
4094 kernel (which also appears to be lseek's return type).
4096 lseektype (lseektype.U):
4097 This variable defines lseektype to be something like off_t, long,
4098 or whatever type is used to declare lseek offset's type in the
4099 kernel (which also appears to be lseek's return type).
4102 This variable is defined but not used by Configure.
4103 The value is the empty string and is not useful.
4106 This variable is defined but not used by Configure.
4107 The value is the empty string and is not useful.
4110 This variable is used internally by Configure to determine the
4111 full pathname (if any) of the make program. After Configure runs,
4112 the value is reset to a plain "make" and is not useful.
4114 make_set_make (make.U):
4115 Some versions of 'make' set the variable MAKE. Others do not.
4116 This variable contains the string to be included in Makefile.SH
4117 so that MAKE is set if needed, and not if not needed.
4118 Possible values are:
4120 make_set_make='#' # If your make program handles this for you,
4122 make_set_make="MAKE=$make" # if it doesn't.
4124 This uses a comment character so that we can distinguish a
4125 'set' value (from a previous config.sh or Configure '-D' option)
4126 from an uncomputed value.
4128 mallocobj (mallocsrc.U):
4129 This variable contains the name of the malloc.o that this package
4130 generates, if that malloc.o is preferred over the system malloc.
4131 Otherwise the value is null. This variable is intended for generating
4132 Makefiles. See mallocsrc.
4134 mallocsrc (mallocsrc.U):
4135 This variable contains the name of the malloc.c that comes with
4136 the package, if that malloc.c is preferred over the system malloc.
4137 Otherwise the value is null. This variable is intended for generating
4140 malloctype (mallocsrc.U):
4141 This variable contains the kind of ptr returned by malloc and realloc.
4143 man1dir (man1dir.U):
4144 This variable contains the name of the directory in which manual
4145 source pages are to be put. It is the responsibility of the
4146 Makefile.SH to get the value of this into the proper command.
4147 You must be prepared to do the ~name expansion yourself.
4149 man1direxp (man1dir.U):
4150 This variable is the same as the man1dir variable, but is filename
4151 expanded at configuration time, for convenient use in makefiles.
4153 man1ext (man1dir.U):
4154 This variable contains the extension that the manual page should
4155 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
4158 man3dir (man3dir.U):
4159 This variable contains the name of the directory in which manual
4160 source pages are to be put. It is the responsibility of the
4161 Makefile.SH to get the value of this into the proper command.
4162 You must be prepared to do the ~name expansion yourself.
4164 man3direxp (man3dir.U):
4165 This variable is the same as the man3dir variable, but is filename
4166 expanded at configuration time, for convenient use in makefiles.
4168 man3ext (man3dir.U):
4169 This variable contains the extension that the manual page should
4170 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
4173 mips_type (usrinc.U):
4174 This variable holds the environment type for the mips system.
4175 Possible values are "BSD 4.3" and "System V".
4177 mistrustnm (Csym.U):
4178 This variable can be used to establish a fallthrough for the cases
4179 where nm fails to find a symbol. If usenm is false or usenm is true
4180 and mistrustnm is false, this variable has no effect. If usenm is true
4181 and mistrustnm is "compile", a test program will be compiled to try to
4182 find any symbol that can't be located via nm lookup. If mistrustnm is
4183 "run", the test program will be run as well as being compiled.
4186 This variable is used internally by Configure to determine the
4187 full pathname (if any) of the mkdir program. After Configure runs,
4188 the value is reset to a plain "mkdir" and is not useful.
4190 mmaptype (d_mmap.U):
4191 This symbol contains the type of pointer returned by mmap()
4192 (and simultaneously the type of the first argument).
4193 It can be 'void *' or 'caddr_t'.
4195 modetype (modetype.U):
4196 This variable defines modetype to be something like mode_t,
4197 int, unsigned short, or whatever type is used to declare file
4198 modes for system calls.
4201 This variable is used internally by Configure to determine the
4202 full pathname (if any) of the more program. After Configure runs,
4203 the value is reset to a plain "more" and is not useful.
4205 multiarch (multiarch.U):
4206 This variable conditionally defines the MULTIARCH symbol
4207 which signifies the presence of multiplatform files.
4208 This is normally set by hints files.
4211 This variable is defined but not used by Configure.
4212 The value is the empty string and is not useful.
4214 myarchname (archname.U):
4215 This variable holds the architecture name computed by Configure in
4216 a previous run. It is not intended to be perused by any user and
4217 should never be set in a hint file.
4219 mydomain (myhostname.U):
4220 This variable contains the eventual value of the MYDOMAIN symbol,
4221 which is the domain of the host the program is going to run on.
4222 The domain must be appended to myhostname to form a complete host name.
4223 The dot comes with mydomain, and need not be supplied by the program.
4225 myhostname (myhostname.U):
4226 This variable contains the eventual value of the MYHOSTNAME symbol,
4227 which is the name of the host the program is going to run on.
4228 The domain is not kept with hostname, but must be gotten from mydomain.
4229 The dot comes with mydomain, and need not be supplied by the program.
4231 myuname (Oldconfig.U):
4232 The output of 'uname -a' if available, otherwise the hostname.
4233 The whole thing is then lower-cased and slashes and single quotes are
4237 This variable contains the '-n' flag if that is what causes the echo
4238 command to suppress newline. Otherwise it is null. Correct usage is
4239 $echo $n "prompt for a question: $c".
4241 need_va_copy (need_va_copy.U):
4242 This symbol, if defined, indicates that the system stores
4243 the variable argument list datatype, va_list, in a format
4244 that cannot be copied by simple assignment, so that some
4245 other means must be used when copying is required.
4246 As such systems vary in their provision (or non-provision)
4247 of copying mechanisms, handy.h defines a platform-
4248 independent macro, Perl_va_copy(src, dst), to do the job.
4250 netdb_hlen_type (netdbtype.U):
4251 This variable holds the type used for the 2nd argument to
4252 gethostbyaddr(). Usually, this is int or size_t or unsigned.
4253 This is only useful if you have gethostbyaddr(), naturally.
4255 netdb_host_type (netdbtype.U):
4256 This variable holds the type used for the 1st argument to
4257 gethostbyaddr(). Usually, this is char * or void *, possibly
4258 with or without a const prefix.
4259 This is only useful if you have gethostbyaddr(), naturally.
4261 netdb_name_type (netdbtype.U):
4262 This variable holds the type used for the argument to
4263 gethostbyname(). Usually, this is char * or const char *.
4264 This is only useful if you have gethostbyname(), naturally.
4266 netdb_net_type (netdbtype.U):
4267 This variable holds the type used for the 1st argument to
4268 getnetbyaddr(). Usually, this is int or long.
4269 This is only useful if you have getnetbyaddr(), naturally.
4272 This variable is used internally by Configure to determine the
4273 full pathname (if any) of the nm program. After Configure runs,
4274 the value is reset to a plain "nm" and is not useful.
4277 This variable holds the options that may be necessary for nm.
4279 nm_so_opt (usenm.U):
4280 This variable holds the options that may be necessary for nm
4281 to work on a shared library but that can not be used on an
4282 archive library. Currently, this is only used by Linux, where
4283 nm --dynamic is *required* to get symbols from an ELF library which
4284 has been stripped, but nm --dynamic is *fatal* on an archive library.
4285 Maybe Linux should just always set usenm=false.
4287 nonxs_ext (Extensions.U):
4288 This variable holds a list of all non-xs extensions built and
4289 installed by the package. By default, all non-xs extensions
4290 distributed will be built, with the exception of platform-specific
4291 extensions (currently only one VMS specific extension).
4294 This variable is used internally by Configure to determine the
4295 full pathname (if any) of the nroff program. After Configure runs,
4296 the value is reset to a plain "nroff" and is not useful.
4298 nv_overflows_integers_at (perlxv.U):
4299 This variable gives the largest integer value that NVs can hold
4300 as a constant floating point expression.
4301 If it could not be determined, it holds the value 0.
4303 nv_preserves_uv_bits (perlxv.U):
4304 This variable indicates how many of bits type uvtype
4305 a variable nvtype can preserve.
4307 nveformat (perlxvf.U):
4308 This variable contains the format string used for printing
4309 a Perl NV using %e-ish floating point format.
4311 nvEUformat (perlxvf.U):
4312 This variable contains the format string used for printing
4313 a Perl NV using %E-ish floating point format.
4315 nvfformat (perlxvf.U):
4316 This variable contains the format string used for printing
4317 a Perl NV using %f-ish floating point format.
4319 nvFUformat (perlxvf.U):
4320 This variable contains the format string used for printing
4321 a Perl NV using %F-ish floating point format.
4323 nvgformat (perlxvf.U):
4324 This variable contains the format string used for printing
4325 a Perl NV using %g-ish floating point format.
4327 nvGUformat (perlxvf.U):
4328 This variable contains the format string used for printing
4329 a Perl NV using %G-ish floating point format.
4332 This variable is the size of an NV in bytes.
4335 This variable contains the C type used for Perl's NV.
4337 o_nonblock (nblock_io.U):
4338 This variable bears the symbol value to be used during open() or fcntl()
4339 to turn on non-blocking I/O for a file descriptor. If you wish to switch
4340 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
4341 but that is only supported by some devices.
4344 This is an old synonym for _o.
4346 old_pthread_create_joinable (d_pthrattrj.U):
4347 This variable defines the constant to use for creating joinable
4348 (aka undetached) pthreads. Unused if pthread.h defines
4349 PTHREAD_CREATE_JOINABLE. If used, possible values are
4350 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
4352 optimize (ccflags.U):
4353 This variable contains any optimizer/debugger flag that should be used.
4354 It is up to the Makefile to use it.
4356 orderlib (orderlib.U):
4357 This variable is "true" if the components of libraries must be ordered
4358 (with `lorder $* | tsort`) before placing them in an archive. Set to
4359 "false" if ranlib or ar can generate random libraries.
4361 osname (Oldconfig.U):
4362 This variable contains the operating system name (e.g. sunos,
4363 solaris, hpux, etc.). It can be useful later on for setting
4364 defaults. Any spaces are replaced with underscores. It is set
4365 to a null string if we can't figure it out.
4367 osvers (Oldconfig.U):
4368 This variable contains the operating system version (e.g.
4369 4.1.3, 5.2, etc.). It is primarily used for helping select
4370 an appropriate hints file, but might be useful elsewhere for
4371 setting defaults. It is set to '' if we can't figure it out.
4372 We try to be flexible about how much of the version number
4373 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
4374 same for this package, hints files might just be os_4.0 or
4375 os_4.1, etc., not keeping separate files for each little release.
4377 otherlibdirs (otherlibdirs.U):
4378 This variable contains a colon-separated set of paths for the perl
4379 binary to search for additional library files or modules.
4380 These directories will be tacked to the end of @INC.
4381 Perl will automatically search below each path for version-
4382 and architecture-specific directories. See inc_version_list
4384 A value of ' ' means 'none' and is used to preserve this value
4385 for the next run through Configure.
4387 package (package.U):
4388 This variable contains the name of the package being constructed.
4389 It is primarily intended for the use of later Configure units.
4392 This variable contains the name of the preferred pager on the system.
4393 Usual values are (the full pathnames of) more, less, pg, or cat.
4396 This variable contains a command that produces the text of the
4397 /etc/passwd file. This is normally "cat /etc/passwd", but can be
4398 "ypcat passwd" when NIS is used.
4399 On some systems, such as os390, there may be no equivalent
4400 command, in which case this variable is unset.
4402 patchlevel (patchlevel.U):
4403 The patchlevel level of this package.
4404 The value of patchlevel comes from the patchlevel.h file.
4405 In a version number such as 5.6.1, this is the "6".
4406 In patchlevel.h, this is referred to as "PERL_VERSION".
4409 This is an old synonym for p_ in Head.U, the character
4410 used to separate elements in the command shell search PATH.
4413 This variable is used internally by Configure to determine the
4414 full pathname (if any) of the perl program. After Configure runs,
4415 the value is reset to a plain "perl" and is not useful.
4418 This variable contains the full path (if any) to a previously
4419 installed perl5.005 or later suitable for running the script
4420 to determine inc_version_list.
4422 PERL_API_REVISION (patchlevel.h):
4423 This number describes the earliest compatible PERL_REVISION of
4424 Perl ("compatibility" here being defined as sufficient binary/API
4425 compatibility to run XS code built with the older version).
4426 Normally this does not change across maintenance releases.
4427 Please read the comment in patchlevel.h.
4429 PERL_API_SUBVERSION (patchlevel.h):
4430 This number describes the earliest compatible PERL_SUBVERSION of
4431 Perl ("compatibility" here being defined as sufficient binary/API
4432 compatibility to run XS code built with the older version).
4433 Normally this does not change across maintenance releases.
4434 Please read the comment in patchlevel.h.
4436 PERL_API_VERSION (patchlevel.h):
4437 This number describes the earliest compatible PERL_VERSION of
4438 Perl ("compatibility" here being defined as sufficient binary/API
4439 compatibility to run XS code built with the older version).
4440 Normally this does not change across maintenance releases.
4441 Please read the comment in patchlevel.h.
4443 PERL_CONFIG_SH (Oldsyms.U):
4444 This is set to 'true' in config.sh so that a shell script
4445 sourcing config.sh can tell if it has been sourced already.
4447 PERL_PATCHLEVEL (Oldsyms.U):
4448 This symbol reflects the patchlevel, if available. Will usually
4449 come from the .patch file, which is available when the perl
4450 source tree was fetched with rsync.
4452 perl_patchlevel (patchlevel.U):
4453 This is the Perl patch level, a numeric change identifier,
4454 as defined by whichever source code maintenance system
4455 is used to maintain the patches; currently Perforce.
4456 It does not correlate with the Perl version numbers or
4457 the maintenance versus development dichotomy except
4458 by also being increasing.
4460 PERL_REVISION (Oldsyms.U):
4461 In a Perl version number such as 5.6.2, this is the 5.
4462 This value is manually set in patchlevel.h
4464 perl_static_inline (d_static_inline.U):
4465 This variable defines the PERL_STATIC_INLINE symbol to
4466 the best-guess incantation to use for static inline functions.
4467 Possibilities include
4469 static __inline__ (gcc -ansi)
4470 static __inline (MSVC)
4471 static _inline (older MSVC)
4472 static (c89 compilers)
4474 PERL_SUBVERSION (Oldsyms.U):
4475 In a Perl version number such as 5.6.2, this is the 2.
4476 Values greater than 50 represent potentially unstable
4477 development subversions.
4478 This value is manually set in patchlevel.h
4480 PERL_VERSION (Oldsyms.U):
4481 In a Perl version number such as 5.6.2, this is the 6.
4482 This value is manually set in patchlevel.h
4484 perladmin (perladmin.U):
4485 Electronic mail address of the perl5 administrator.
4488 The list of libraries needed by Perl only (any libraries needed
4489 by extensions only will by dropped, if using dynamic loading).
4491 perlpath (perlpath.U):
4492 This variable contains the eventual value of the PERLPATH symbol,
4493 which contains the name of the perl interpreter to be used in
4494 shell scripts and in the "eval 'exec'" idiom. This variable is
4495 not necessarily the pathname of the file containing the perl
4496 interpreter; you must append the executable extension (_exe) if
4497 it is not already present. Note that Perl code that runs during
4498 the Perl build process cannot reference this variable, as Perl
4499 may not have been installed, or even if installed, may be a
4500 different version of Perl.
4503 This variable is used internally by Configure to determine the
4504 full pathname (if any) of the pg program. After Configure runs,
4505 the value is reset to a plain "pg" and is not useful.
4507 phostname (myhostname.U):
4508 This variable contains the eventual value of the PHOSTNAME symbol,
4509 which is a command that can be fed to popen() to get the host name.
4510 The program should probably not presume that the domain is or isn't
4513 pidtype (pidtype.U):
4514 This variable defines PIDTYPE to be something like pid_t, int,
4515 ushort, or whatever type is used to declare process ids in the kernel.
4518 Holds the private path used by Configure to find out the libraries.
4519 Its value is prepend to libpth. This variable takes care of special
4520 machines, like the mips. Usually, it should be empty.
4523 This variable is defined but not used by Configure.
4524 The value is the empty string and is not useful.
4527 This variable is defined but not used by Configure.
4528 The value is the empty string and is not useful.
4531 This variable holds the name of the directory below which the
4532 user will install the package. Usually, this is /usr/local, and
4533 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4534 man pages in /usr/local/man, etc. It is only used to set defaults
4535 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4537 prefixexp (prefix.U):
4538 This variable holds the full absolute path of the directory below
4539 which the user will install the package. Derived from prefix.
4541 privlib (privlib.U):
4542 This variable contains the eventual value of the PRIVLIB symbol,
4543 which is the name of the private library for this package. It may
4544 have a ~ on the front. It is up to the makefile to eventually create
4545 this directory while performing installation (with ~ substitution).
4547 privlibexp (privlib.U):
4548 This variable is the ~name expanded version of privlib, so that you
4549 may use it directly in Makefiles or shell scripts.
4551 procselfexe (d_procselfexe.U):
4552 If d_procselfexe is defined, $procselfexe is the filename
4553 of the symbolic link pointing to the absolute pathname of
4554 the executing program.
4556 prototype (prototype.U):
4557 This variable holds the eventual value of CAN_PROTOTYPE, which
4558 indicates the C compiler can handle function prototypes.
4560 ptrsize (ptrsize.U):
4561 This variable contains the value of the PTRSIZE symbol, which
4562 indicates to the C program how many bytes there are in a pointer.
4564 quadkind (quadtype.U):
4565 This variable, if defined, encodes the type of a quad:
4566 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4568 quadtype (quadtype.U):
4569 This variable defines Quad_t to be something like long, int,
4570 long long, int64_t, or whatever type is used for 64-bit integers.
4572 randbits (randfunc.U):
4573 Indicates how many bits are produced by the function used to
4574 generate normalized random numbers.
4576 randfunc (randfunc.U):
4577 Indicates the name of the random number function to use.
4578 Values include drand48, random, and rand. In C programs,
4579 the 'Drand01' macro is defined to generate uniformly distributed
4580 random numbers over the range [0., 1.[ (see drand01 and nrand).
4582 random_r_proto (d_random_r.U):
4583 This variable encodes the prototype of random_r.
4584 It is zero if d_random_r is undef, and one of the
4585 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4588 randseedtype (randfunc.U):
4589 Indicates the type of the argument of the seedfunc.
4591 ranlib (orderlib.U):
4592 This variable is set to the pathname of the ranlib program, if it is
4593 needed to generate random libraries. Set to ":" if ar can generate
4594 random libraries or if random libraries are not supported
4596 rd_nodata (nblock_io.U):
4597 This variable holds the return code from read() when no data is
4598 present. It should be -1, but some systems return 0 when O_NDELAY is
4599 used, which is a shame because you cannot make the difference between
4600 no data and an EOF.. Sigh!
4602 readdir64_r_proto (d_readdir64_r.U):
4603 This variable encodes the prototype of readdir64_r.
4604 It is zero if d_readdir64_r is undef, and one of the
4605 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4608 readdir_r_proto (d_readdir_r.U):
4609 This variable encodes the prototype of readdir_r.
4610 It is zero if d_readdir_r is undef, and one of the
4611 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4614 revision (patchlevel.U):
4615 The value of revision comes from the patchlevel.h file.
4616 In a version number such as 5.6.1, this is the "5".
4617 In patchlevel.h, this is referred to as "PERL_REVISION".
4620 This variable is used internally by Configure to determine the
4621 full pathname (if any) of the rm program. After Configure runs,
4622 the value is reset to a plain "rm" and is not useful.
4625 This is a cleanup variable for try test programs.
4626 Internal Configure use only.
4629 This variable is defined but not used by Configure.
4630 The value is the empty string and is not useful.
4633 This variable contains the command used by Configure
4634 to copy and execute a cross-compiled executable in the
4635 target host. Useful and available only during Perl build.
4636 Empty string '' if not cross-compiling.
4639 This variable contains 'true' or 'false' depending whether the
4640 nm extraction should be performed or not, according to the value
4641 of usenm and the flags on the Configure command line.
4643 sched_yield (d_pthread_y.U):
4644 This variable defines the way to yield the execution
4645 of the current thread.
4647 scriptdir (scriptdir.U):
4648 This variable holds the name of the directory in which the user wants
4649 to put publicly scripts for the package in question. It is either
4650 the same directory as for binaries, or a special one that can be
4651 mounted across different architectures, like /usr/share. Programs
4652 must be prepared to deal with ~name expansion.
4654 scriptdirexp (scriptdir.U):
4655 This variable is the same as scriptdir, but is filename expanded
4656 at configuration time, for programs not wanting to bother with it.
4659 This variable is used internally by Configure to determine the
4660 full pathname (if any) of the sed program. After Configure runs,
4661 the value is reset to a plain "sed" and is not useful.
4663 seedfunc (randfunc.U):
4664 Indicates the random number generating seed function.
4665 Values include srand48, srandom, and srand.
4667 selectminbits (selectminbits.U):
4668 This variable holds the minimum number of bits operated by select.
4669 That is, if you do select(n, ...), how many bits at least will be
4670 cleared in the masks if some activity is detected. Usually this
4671 is either n or 32*ceil(n/32), especially many little-endians do
4672 the latter. This is only useful if you have select(), naturally.
4674 selecttype (selecttype.U):
4675 This variable holds the type used for the 2nd, 3rd, and 4th
4676 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4677 is defined, and 'int *' otherwise. This is only useful if you
4678 have select(), naturally.
4681 This variable is defined but not used by Configure.
4682 The value is the empty string and is not useful.
4684 setgrent_r_proto (d_setgrent_r.U):
4685 This variable encodes the prototype of setgrent_r.
4686 It is zero if d_setgrent_r is undef, and one of the
4687 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4690 sethostent_r_proto (d_sethostent_r.U):
4691 This variable encodes the prototype of sethostent_r.
4692 It is zero if d_sethostent_r is undef, and one of the
4693 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4696 setlocale_r_proto (d_setlocale_r.U):
4697 This variable encodes the prototype of setlocale_r.
4698 It is zero if d_setlocale_r is undef, and one of the
4699 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4702 setnetent_r_proto (d_setnetent_r.U):
4703 This variable encodes the prototype of setnetent_r.
4704 It is zero if d_setnetent_r is undef, and one of the
4705 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4708 setprotoent_r_proto (d_setprotoent_r.U):
4709 This variable encodes the prototype of setprotoent_r.
4710 It is zero if d_setprotoent_r is undef, and one of the
4711 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4714 setpwent_r_proto (d_setpwent_r.U):
4715 This variable encodes the prototype of setpwent_r.
4716 It is zero if d_setpwent_r is undef, and one of the
4717 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4720 setservent_r_proto (d_setservent_r.U):
4721 This variable encodes the prototype of setservent_r.
4722 It is zero if d_setservent_r is undef, and one of the
4723 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4726 sGMTIME_max (time_size.U):
4727 This variable defines the maximum value of the time_t offset that
4728 the system function gmtime () accepts
4730 sGMTIME_min (time_size.U):
4731 This variable defines the minimum value of the time_t offset that
4732 the system function gmtime () accepts
4735 This variable contains the full pathname of the shell used
4736 on this system to execute Bourne shell scripts. Usually, this will be
4737 /bin/sh, though it's possible that some systems will have /bin/ksh,
4738 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4740 This unit comes before Options.U, so you can't set sh with a '-D'
4741 option, though you can override this (and startsh)
4742 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4745 This variable is defined but not used by Configure.
4746 The value is the empty string and is not useful.
4748 sharpbang (spitshell.U):
4749 This variable contains the string #! if this system supports that
4752 shmattype (d_shmat.U):
4753 This symbol contains the type of pointer returned by shmat().
4754 It can be 'void *' or 'char *'.
4756 shortsize (intsize.U):
4757 This variable contains the value of the SHORTSIZE symbol which
4758 indicates to the C program how many bytes there are in a short.
4760 shrpenv (libperl.U):
4761 If the user builds a shared libperl.so, then we need to tell the
4762 'perl' executable where it will be able to find the installed libperl.so.
4763 One way to do this on some systems is to set the environment variable
4764 LD_RUN_PATH to the directory that will be the final location of the
4765 shared libperl.so. The makefile can use this with something like
4766 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4768 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4771 See the main perl Makefile.SH for actual working usage.
4772 Alternatively, we might be able to use a command line option such
4773 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4774 $archlibexp/CORE (Linux).
4776 shsharp (spitshell.U):
4777 This variable tells further Configure units whether your sh can
4780 sig_count (sig_name.U):
4781 This variable holds a number larger than the largest valid
4782 signal number. This is usually the same as the NSIG macro.
4784 sig_name (sig_name.U):
4785 This variable holds the signal names, space separated. The leading
4786 SIG in signal name is removed. A ZERO is prepended to the list.
4787 This is currently not used, sig_name_init is used instead.
4789 sig_name_init (sig_name.U):
4790 This variable holds the signal names, enclosed in double quotes and
4791 separated by commas, suitable for use in the SIG_NAME definition
4792 below. A "ZERO" is prepended to the list, and the list is
4793 terminated with a plain 0. The leading SIG in signal names
4794 is removed. See sig_num.
4796 sig_num (sig_name.U):
4797 This variable holds the signal numbers, space separated. A ZERO is
4798 prepended to the list (corresponding to the fake SIGZERO).
4799 Those numbers correspond to the value of the signal listed
4800 in the same place within the sig_name list.
4801 This is currently not used, sig_num_init is used instead.
4803 sig_num_init (sig_name.U):
4804 This variable holds the signal numbers, enclosed in double quotes and
4805 separated by commas, suitable for use in the SIG_NUM definition
4806 below. A "ZERO" is prepended to the list, and the list is
4807 terminated with a plain 0.
4809 sig_size (sig_name.U):
4810 This variable contains the number of elements of the sig_name
4813 signal_t (d_voidsig.U):
4814 This variable holds the type of the signal handler (void or int).
4816 sitearch (sitearch.U):
4817 This variable contains the eventual value of the SITEARCH symbol,
4818 which is the name of the private library for this package. It may
4819 have a ~ on the front. It is up to the makefile to eventually create
4820 this directory while performing installation (with ~ substitution).
4821 The standard distribution will put nothing in this directory.
4822 After perl has been installed, users may install their own local
4823 architecture-dependent modules in this directory with
4824 MakeMaker Makefile.PL
4825 or equivalent. See INSTALL for details.
4827 sitearchexp (sitearch.U):
4828 This variable is the ~name expanded version of sitearch, so that you
4829 may use it directly in Makefiles or shell scripts.
4831 sitebin (sitebin.U):
4832 This variable holds the name of the directory in which the user wants
4833 to put add-on publicly executable files for the package in question. It
4834 is most often a local directory such as /usr/local/bin. Programs using
4835 this variable must be prepared to deal with ~name substitution.
4836 The standard distribution will put nothing in this directory.
4837 After perl has been installed, users may install their own local
4838 executables in this directory with
4839 MakeMaker Makefile.PL
4840 or equivalent. See INSTALL for details.
4842 sitebinexp (sitebin.U):
4843 This is the same as the sitebin variable, but is filename expanded at
4844 configuration time, for use in your makefiles.
4846 sitehtml1dir (sitehtml1dir.U):
4847 This variable contains the name of the directory in which site-specific
4848 html source pages are to be put. It is the responsibility of the
4849 Makefile.SH to get the value of this into the proper command.
4850 You must be prepared to do the ~name expansion yourself.
4851 The standard distribution will put nothing in this directory.
4852 After perl has been installed, users may install their own local
4853 html pages in this directory with
4854 MakeMaker Makefile.PL
4855 or equivalent. See INSTALL for details.
4857 sitehtml1direxp (sitehtml1dir.U):
4858 This variable is the same as the sitehtml1dir variable, but is filename
4859 expanded at configuration time, for convenient use in makefiles.
4861 sitehtml3dir (sitehtml3dir.U):
4862 This variable contains the name of the directory in which site-specific
4863 library html source pages are to be put. It is the responsibility of the
4864 Makefile.SH to get the value of this into the proper command.
4865 You must be prepared to do the ~name expansion yourself.
4866 The standard distribution will put nothing in this directory.
4867 After perl has been installed, users may install their own local
4868 library html pages in this directory with
4869 MakeMaker Makefile.PL
4870 or equivalent. See INSTALL for details.
4872 sitehtml3direxp (sitehtml3dir.U):
4873 This variable is the same as the sitehtml3dir variable, but is filename
4874 expanded at configuration time, for convenient use in makefiles.
4876 sitelib (sitelib.U):
4877 This variable contains the eventual value of the SITELIB symbol,
4878 which is the name of the private library for this package. It may
4879 have a ~ on the front. It is up to the makefile to eventually create
4880 this directory while performing installation (with ~ substitution).
4881 The standard distribution will put nothing in this directory.
4882 After perl has been installed, users may install their own local
4883 architecture-independent modules in this directory with
4884 MakeMaker Makefile.PL
4885 or equivalent. See INSTALL for details.
4887 sitelib_stem (sitelib.U):
4888 This variable is $sitelibexp with any trailing version-specific component
4889 removed. The elements in inc_version_list (inc_version_list.U) can
4890 be tacked onto this variable to generate a list of directories to search.
4892 sitelibexp (sitelib.U):
4893 This variable is the ~name expanded version of sitelib, so that you
4894 may use it directly in Makefiles or shell scripts.
4896 siteman1dir (siteman1dir.U):
4897 This variable contains the name of the directory in which site-specific
4898 manual source pages are to be put. It is the responsibility of the
4899 Makefile.SH to get the value of this into the proper command.
4900 You must be prepared to do the ~name expansion yourself.
4901 The standard distribution will put nothing in this directory.
4902 After perl has been installed, users may install their own local
4903 man1 pages in this directory with
4904 MakeMaker Makefile.PL
4905 or equivalent. See INSTALL for details.
4907 siteman1direxp (siteman1dir.U):
4908 This variable is the same as the siteman1dir variable, but is filename
4909 expanded at configuration time, for convenient use in makefiles.
4911 siteman3dir (siteman3dir.U):
4912 This variable contains the name of the directory in which site-specific
4913 library man source pages are to be put. It is the responsibility of the
4914 Makefile.SH to get the value of this into the proper command.
4915 You must be prepared to do the ~name expansion yourself.
4916 The standard distribution will put nothing in this directory.
4917 After perl has been installed, users may install their own local
4918 man3 pages in this directory with
4919 MakeMaker Makefile.PL
4920 or equivalent. See INSTALL for details.
4922 siteman3direxp (siteman3dir.U):
4923 This variable is the same as the siteman3dir variable, but is filename
4924 expanded at configuration time, for convenient use in makefiles.
4926 siteprefix (siteprefix.U):
4927 This variable holds the full absolute path of the directory below
4928 which the user will install add-on packages.
4929 See INSTALL for usage and examples.
4931 siteprefixexp (siteprefix.U):
4932 This variable holds the full absolute path of the directory below
4933 which the user will install add-on packages. Derived from siteprefix.
4935 sitescript (sitescript.U):
4936 This variable holds the name of the directory in which the user wants
4937 to put add-on publicly executable files for the package in question. It
4938 is most often a local directory such as /usr/local/bin. Programs using
4939 this variable must be prepared to deal with ~name substitution.
4940 The standard distribution will put nothing in this directory.
4941 After perl has been installed, users may install their own local
4942 scripts in this directory with
4943 MakeMaker Makefile.PL
4944 or equivalent. See INSTALL for details.
4946 sitescriptexp (sitescript.U):
4947 This is the same as the sitescript variable, but is filename expanded at
4948 configuration time, for use in your makefiles.
4950 sizesize (sizesize.U):
4951 This variable contains the size of a sizetype in bytes.
4953 sizetype (sizetype.U):
4954 This variable defines sizetype to be something like size_t,
4955 unsigned long, or whatever type is used to declare length
4956 parameters for string functions.
4959 This variable is defined but not used by Configure.
4960 The value is the empty string and is not useful.
4962 sLOCALTIME_max (time_size.U):
4963 This variable defines the maximum value of the time_t offset that
4964 the system function localtime () accepts
4966 sLOCALTIME_min (time_size.U):
4967 This variable defines the minimum value of the time_t offset that
4968 the system function localtime () accepts
4971 This variable is defined but not used by Configure.
4972 The value is the empty string and is not useful.
4975 This variable holds the extension used to identify shared libraries
4976 (also known as shared objects) on the system. Usually set to 'so'.
4978 sockethdr (d_socket.U):
4979 This variable has any cpp '-I' flags needed for socket support.
4981 socketlib (d_socket.U):
4982 This variable has the names of any libraries needed for socket support.
4984 socksizetype (socksizetype.U):
4985 This variable holds the type used for the size argument
4986 for various socket calls like accept. Usual values include
4987 socklen_t, size_t, and int.
4990 This variable is used internally by Configure to determine the
4991 full pathname (if any) of the sort program. After Configure runs,
4992 the value is reset to a plain "sort" and is not useful.
4994 spackage (package.U):
4995 This variable contains the name of the package being constructed,
4996 with the first letter uppercased, i.e. suitable for starting
4999 spitshell (spitshell.U):
5000 This variable contains the command necessary to spit out a runnable
5001 shell on this system. It is either cat or a grep '-v' for # comments.
5003 sPRId64 (quadfio.U):
5004 This variable, if defined, contains the string used by stdio to
5005 format 64-bit decimal numbers (format 'd') for output.
5007 sPRIeldbl (longdblfio.U):
5008 This variable, if defined, contains the string used by stdio to
5009 format long doubles (format 'e') for output.
5011 sPRIEUldbl (longdblfio.U):
5012 This variable, if defined, contains the string used by stdio to
5013 format long doubles (format 'E') for output.
5014 The 'U' in the name is to separate this from sPRIeldbl so that even
5015 case-blind systems can see the difference.
5017 sPRIfldbl (longdblfio.U):
5018 This variable, if defined, contains the string used by stdio to
5019 format long doubles (format 'f') for output.
5021 sPRIFUldbl (longdblfio.U):
5022 This variable, if defined, contains the string used by stdio to
5023 format long doubles (format 'F') for output.
5024 The 'U' in the name is to separate this from sPRIfldbl so that even
5025 case-blind systems can see the difference.
5027 sPRIgldbl (longdblfio.U):
5028 This variable, if defined, contains the string used by stdio to
5029 format long doubles (format 'g') for output.
5031 sPRIGUldbl (longdblfio.U):
5032 This variable, if defined, contains the string used by stdio to
5033 format long doubles (format 'G') for output.
5034 The 'U' in the name is to separate this from sPRIgldbl so that even
5035 case-blind systems can see the difference.
5037 sPRIi64 (quadfio.U):
5038 This variable, if defined, contains the string used by stdio to
5039 format 64-bit decimal numbers (format 'i') for output.
5041 sPRIo64 (quadfio.U):
5042 This variable, if defined, contains the string used by stdio to
5043 format 64-bit octal numbers (format 'o') for output.
5045 sPRIu64 (quadfio.U):
5046 This variable, if defined, contains the string used by stdio to
5047 format 64-bit unsigned decimal numbers (format 'u') for output.
5049 sPRIx64 (quadfio.U):
5050 This variable, if defined, contains the string used by stdio to
5051 format 64-bit hexadecimal numbers (format 'x') for output.
5053 sPRIXU64 (quadfio.U):
5054 This variable, if defined, contains the string used by stdio to
5055 format 64-bit hExADECimAl numbers (format 'X') for output.
5056 The 'U' in the name is to separate this from sPRIx64 so that even
5057 case-blind systems can see the difference.
5059 srand48_r_proto (d_srand48_r.U):
5060 This variable encodes the prototype of srand48_r.
5061 It is zero if d_srand48_r is undef, and one of the
5062 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
5065 srandom_r_proto (d_srandom_r.U):
5066 This variable encodes the prototype of srandom_r.
5067 It is zero if d_srandom_r is undef, and one of the
5068 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
5072 This variable holds the (possibly relative) path of the package source.
5073 It is up to the Makefile to use this variable and set VPATH accordingly
5074 to find the sources remotely. Use $pkgsrc to have an absolute path.
5076 sSCNfldbl (longdblfio.U):
5077 This variable, if defined, contains the string used by stdio to
5078 format long doubles (format 'f') for input.
5080 ssizetype (ssizetype.U):
5081 This variable defines ssizetype to be something like ssize_t,
5082 long or int. It is used by functions that return a count
5083 of bytes or an error condition. It must be a signed type.
5084 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
5086 st_ino_sign (st_ino_def.U):
5087 This variable contains the signedness of struct stat's st_ino.
5088 1 for unsigned, -1 for signed.
5090 st_ino_size (st_ino_def.U):
5091 This variable contains the size of struct stat's st_ino in bytes.
5093 startperl (startperl.U):
5094 This variable contains the string to put on the front of a perl
5095 script to make sure (hopefully) that it runs with perl and not some
5096 shell. Of course, that leading line must be followed by the classical
5098 eval 'exec perl -S $0 ${1+"$@"}'
5099 if $running_under_some_shell;
5100 to guarantee perl startup should the shell execute the script. Note
5101 that this magic incantation is not understood by csh.
5103 startsh (startsh.U):
5104 This variable contains the string to put on the front of a shell
5105 script to make sure (hopefully) that it runs with sh and not some
5108 static_ext (Extensions.U):
5109 This variable holds a list of XS extension files we want to
5110 link statically into the package. It is used by Makefile.
5112 stdchar (stdchar.U):
5113 This variable conditionally defines STDCHAR to be the type of char
5114 used in stdio.h. It has the values "unsigned char" or "char".
5116 stdio_base (d_stdstdio.U):
5117 This variable defines how, given a FILE pointer, fp, to access the
5118 _base field (or equivalent) of stdio.h's FILE structure. This will
5119 be used to define the macro FILE_base(fp).
5121 stdio_bufsiz (d_stdstdio.U):
5122 This variable defines how, given a FILE pointer, fp, to determine
5123 the number of bytes store in the I/O buffer pointer to by the
5124 _base field (or equivalent) of stdio.h's FILE structure. This will
5125 be used to define the macro FILE_bufsiz(fp).
5127 stdio_cnt (d_stdstdio.U):
5128 This variable defines how, given a FILE pointer, fp, to access the
5129 _cnt field (or equivalent) of stdio.h's FILE structure. This will
5130 be used to define the macro FILE_cnt(fp).
5132 stdio_filbuf (d_stdstdio.U):
5133 This variable defines how, given a FILE pointer, fp, to tell
5134 stdio to refill its internal buffers (?). This will
5135 be used to define the macro FILE_filbuf(fp).
5137 stdio_ptr (d_stdstdio.U):
5138 This variable defines how, given a FILE pointer, fp, to access the
5139 _ptr field (or equivalent) of stdio.h's FILE structure. This will
5140 be used to define the macro FILE_ptr(fp).
5142 stdio_stream_array (stdio_streams.U):
5143 This variable tells the name of the array holding the stdio streams.
5144 Usual values include _iob, __iob, and __sF.
5146 strerror_r_proto (d_strerror_r.U):
5147 This variable encodes the prototype of strerror_r.
5148 It is zero if d_strerror_r is undef, and one of the
5149 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
5152 strings (i_string.U):
5153 This variable holds the full path of the string header that will be
5154 used. Typically /usr/include/string.h or /usr/include/strings.h.
5157 This variable is defined but not used by Configure.
5158 The value is the empty string and is not useful.
5160 subversion (patchlevel.U):
5161 The subversion level of this package.
5162 The value of subversion comes from the patchlevel.h file.
5163 In a version number such as 5.6.1, this is the "1".
5164 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
5165 This is unique to perl.
5168 This variable holds the place where the manual is located on this
5169 system. It is not the place where the user wants to put his manual
5170 pages. Rather it is the place where Configure may look to find manual
5171 for unix commands (section 1 of the manual usually). See mansrc.
5173 sysroot (Sysroot.U):
5174 This variable is empty unless supplied by the Configure user.
5175 It can contain a path to an alternative root directory, under which
5176 headers and libraries for the compilation target can be found. This
5177 is generally used when cross-compiling using a gcc-like compiler.
5180 This variable is defined but not used by Configure.
5181 The value is the empty string and is not useful.
5184 This variable is defined but not used by Configure.
5185 The value is the empty string and is not useful.
5187 targetarch (Cross.U):
5188 If cross-compiling, this variable contains the target architecture.
5189 If not, this will be empty.
5191 targetdir (Cross.U):
5192 This variable contains a path that will be created on the target
5193 host using targetmkdir, and then used to copy the cross-compiled
5194 executables to. Defaults to '/tmp' if not set.
5196 targetenv (Cross.U):
5197 If cross-compiling, this variable can be used to modify the
5198 environment on the target system.
5199 However, how and where it's used, and even if it's used at all, is
5200 entirely dependent on both the transport mechanism (targetrun) and
5201 what the target system is. Unless the relevant documentation says
5202 otherwise, it is genereally not useful.
5204 targethost (Cross.U):
5205 This variable contains the name of a separate host machine that
5206 can be used to run compiled test programs and perl tests on.
5207 Set to empty string if not in use.
5209 targetmkdir (Cross.U):
5210 This variable contains the command used by Configure to create a
5211 new directory on the target host.
5213 targetport (Cross.U):
5214 This variable contains the number of a network port to be used to
5215 connect to the host in targethost, if unset defaults to 22 for ssh.
5218 If cross-compiling, this variable contains the location of sh on the
5220 If not, this will be the same as $sh.
5223 This variable is defined but not used by Configure.
5224 The value is the empty string and is not useful.
5227 This variable is defined but not used by Configure.
5228 The value is the empty string and is not useful.
5231 This variable is used internally by Configure to determine the
5232 full pathname (if any) of the test program. After Configure runs,
5233 the value is reset to a plain "test" and is not useful.
5235 timeincl (i_time.U):
5236 This variable holds the full path of the included time header(s).
5238 timetype (d_time.U):
5239 This variable holds the type returned by time(). It can be long,
5240 or time_t on BSD sites (in which case <sys/types.h> should be
5241 included). Anyway, the type Time_t should be used.
5243 tmpnam_r_proto (d_tmpnam_r.U):
5244 This variable encodes the prototype of tmpnam_r.
5245 It is zero if d_tmpnam_r is undef, and one of the
5246 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
5250 This variable contains the command used by Configure
5251 to copy to from the target host. Useful and available
5252 only during Perl build.
5253 The string ':' if not cross-compiling.
5256 This variable is used internally by Configure to determine the
5257 full pathname (if any) of the touch program. After Configure runs,
5258 the value is reset to a plain "touch" and is not useful.
5261 This variable is used internally by Configure to determine the
5262 full pathname (if any) of the tr program. After Configure runs,
5263 the value is reset to a plain "tr" and is not useful.
5266 This variable contains the value to be passed to the tr(1)
5267 command to transliterate a newline. Typical values are
5268 '\012' and '\n'. This is needed for EBCDIC systems where
5269 newline is not necessarily '\012'.
5272 This variable is defined but not used by Configure.
5273 The value is the empty string and is not useful.
5275 ttyname_r_proto (d_ttyname_r.U):
5276 This variable encodes the prototype of ttyname_r.
5277 It is zero if d_ttyname_r is undef, and one of the
5278 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
5282 This variable is the size of an U16 in bytes.
5285 This variable contains the C type used for Perl's U16.
5288 This variable is the size of an U32 in bytes.
5291 This variable contains the C type used for Perl's U32.
5294 This variable is the size of an U64 in bytes.
5297 This variable contains the C type used for Perl's U64.
5300 This variable is the size of an U8 in bytes.
5303 This variable contains the C type used for Perl's U8.
5306 This variable contains the format string used for printing a Uid_t.
5308 uidsign (uidsign.U):
5309 This variable contains the signedness of a uidtype.
5310 1 for unsigned, -1 for signed.
5312 uidsize (uidsize.U):
5313 This variable contains the size of a uidtype in bytes.
5315 uidtype (uidtype.U):
5316 This variable defines Uid_t to be something like uid_t, int,
5317 ushort, or whatever type is used to declare user ids in the kernel.
5320 This variable is used internally by Configure to determine the
5321 full pathname (if any) of the uname program. After Configure runs,
5322 the value is reset to a plain "uname" and is not useful.
5325 This variable is used internally by Configure to determine the
5326 full pathname (if any) of the uniq program. After Configure runs,
5327 the value is reset to a plain "uniq" and is not useful.
5329 uquadtype (quadtype.U):
5330 This variable defines Uquad_t to be something like unsigned long,
5331 unsigned int, unsigned long long, uint64_t, or whatever type is
5332 used for 64-bit integers.
5334 use5005threads (usethreads.U):
5335 This variable conditionally defines the USE_5005THREADS symbol,
5336 and indicates that Perl should be built to use the 5.005-based
5337 threading implementation. Only valid up to 5.8.x.
5339 use64bitall (use64bits.U):
5340 This variable conditionally defines the USE_64_BIT_ALL symbol,
5341 and indicates that 64-bit integer types should be used
5342 when available. The maximal possible
5343 64-bitness is employed: LP64 or ILP64, meaning that you will
5344 be able to use more than 2 gigabytes of memory. This mode is
5345 even more binary incompatible than USE_64_BIT_INT. You may not
5346 be able to run the resulting executable in a 32-bit CPU at all or
5347 you may need at least to reboot your OS to 64-bit mode.
5349 use64bitint (use64bits.U):
5350 This variable conditionally defines the USE_64_BIT_INT symbol,
5351 and indicates that 64-bit integer types should be used
5352 when available. The minimal possible 64-bitness
5353 is employed, just enough to get 64-bit integers into Perl.
5354 This may mean using for example "long longs", while your memory
5355 may still be limited to 2 gigabytes.
5357 usecbacktrace (usebacktrace.U):
5358 This variable indicates whether we are compiling with backtrace
5361 usecrosscompile (Cross.U):
5362 This variable conditionally defines the USE_CROSS_COMPILE symbol,
5363 and indicates that Perl has been cross-compiled.
5366 This variable indicates that Perl was configured with development
5367 features enabled. This should not be done for production builds.
5370 This variable indicates if the system supports dynamic
5371 loading of some sort. See also dlsrc and dlobj.
5373 usedtrace (usedtrace.U):
5374 This variable indicates whether we are compiling with dtrace
5375 support. See also dtrace.
5377 usefaststdio (usefaststdio.U):
5378 This variable conditionally defines the USE_FAST_STDIO symbol,
5379 and indicates that Perl should be built to use 'fast stdio'.
5380 Defaults to define in Perls 5.8 and earlier, to undef later.
5382 useithreads (usethreads.U):
5383 This variable conditionally defines the USE_ITHREADS symbol,
5384 and indicates that Perl should be built to use the interpreter-based
5385 threading implementation.
5387 usekernprocpathname (usekernprocpathname.U):
5388 This variable, indicates that we can use sysctl with
5389 KERN_PROC_PATHNAME to get a full path for the executable, and hence
5390 convert $^X to an absolute path.
5392 uselargefiles (uselfs.U):
5393 This variable conditionally defines the USE_LARGE_FILES symbol,
5394 and indicates that large file interfaces should be used when
5397 uselongdouble (uselongdbl.U):
5398 This variable conditionally defines the USE_LONG_DOUBLE symbol,
5399 and indicates that long doubles should be used when available.
5401 usemallocwrap (mallocsrc.U):
5402 This variable contains y if we are wrapping malloc to prevent
5403 integer overflow during size calculations.
5405 usemorebits (usemorebits.U):
5406 This variable conditionally defines the USE_MORE_BITS symbol,
5407 and indicates that explicit 64-bit interfaces and long doubles
5408 should be used when available.
5410 usemultiplicity (usemultiplicity.U):
5411 This variable conditionally defines the MULTIPLICITY symbol,
5412 and indicates that Perl should be built to use multiplicity.
5414 usemymalloc (mallocsrc.U):
5415 This variable contains y if the malloc that comes with this package
5416 is desired over the system's version of malloc. People often include
5417 special versions of malloc for efficiency, but such versions are often
5418 less portable. See also mallocsrc and mallocobj.
5419 If this is 'y', then -lmalloc is removed from $libs.
5422 This variable contains 'true' or 'false' depending whether the
5423 nm extraction is wanted or not.
5425 usensgetexecutablepath (usensgetexecutablepath.U):
5426 This symbol, if defined, indicates that we can use _NSGetExecutablePath
5427 and realpath to get a full path for the executable, and hence convert
5428 $^X to an absolute path.
5430 useopcode (Extensions.U):
5431 This variable holds either 'true' or 'false' to indicate
5432 whether the Opcode extension should be used. The sole
5433 use for this currently is to allow an easy mechanism
5434 for users to skip the Opcode extension from the Configure
5437 useperlio (useperlio.U):
5438 This variable conditionally defines the USE_PERLIO symbol,
5439 and indicates that the PerlIO abstraction should be
5442 useposix (Extensions.U):
5443 This variable holds either 'true' or 'false' to indicate
5444 whether the POSIX extension should be used. The sole
5445 use for this currently is to allow an easy mechanism
5446 for hints files to indicate that POSIX will not compile
5447 on a particular system.
5449 usequadmath (usequadmath.U):
5450 This variable conditionally defines the USE_QUADMATH symbol,
5451 and indicates that the quadmath library __float128 long doubles
5452 should be used when available.
5454 usereentrant (usethreads.U):
5455 This variable conditionally defines the USE_REENTRANT_API symbol,
5456 which indicates that the thread code may try to use the various
5457 _r versions of library functions. This is only potentially
5458 meaningful if usethreads is set and is very experimental, it is
5459 not even prompted for.
5461 userelocatableinc (bin.U):
5462 This variable is set to true to indicate that perl should relocate
5463 @INC entries at runtime based on the path to the perl binary.
5464 Any @INC paths starting ".../" are relocated relative to the directory
5465 containing the perl binary, and a logical cleanup of the path is then
5466 made around the join point (removing "dir/../" pairs)
5468 useshrplib (libperl.U):
5469 This variable is set to 'true' if the user wishes
5470 to build a shared libperl, and 'false' otherwise.
5472 usesitecustomize (d_sitecustomize.U):
5473 This variable is set to true when the user requires a mechanism that
5474 allows the sysadmin to add entries to @INC at runtime. This variable
5475 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
5477 usesocks (usesocks.U):
5478 This variable conditionally defines the USE_SOCKS symbol,
5479 and indicates that Perl should be built to use SOCKS.
5481 usethreads (usethreads.U):
5482 This variable conditionally defines the USE_THREADS symbol,
5483 and indicates that Perl should be built to use threads.
5485 usevendorprefix (vendorprefix.U):
5486 This variable tells whether the vendorprefix
5487 and consequently other vendor* paths are in use.
5489 useversionedarchname (archname.U):
5490 This variable indicates whether to include the $api_versionstring
5491 as a component of the $archname.
5493 usevfork (d_vfork.U):
5494 This variable is set to true when the user accepts to use vfork.
5495 It is set to false when no vfork is available or when the user
5496 explicitly requests not to use vfork.
5499 This variable holds the path of the include files, which is
5500 usually /usr/include. It is mainly used by other Configure units.
5503 This variable is defined but not used by Configure.
5504 The value is the empty string and is not useful.
5506 uvoformat (perlxvf.U):
5507 This variable contains the format string used for printing
5508 a Perl UV as an unsigned octal integer.
5511 This variable is the size of a UV in bytes.
5514 This variable contains the C type used for Perl's UV.
5516 uvuformat (perlxvf.U):
5517 This variable contains the format string used for printing
5518 a Perl UV as an unsigned decimal integer.
5520 uvxformat (perlxvf.U):
5521 This variable contains the format string used for printing
5522 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
5524 uvXUformat (perlxvf.U):
5525 This variable contains the format string used for printing
5526 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
5528 vaproto (vaproto.U):
5529 This variable conditionally defines CAN_VAPROTO on systems supporting
5530 prototype declaration of functions with a variable number of
5531 arguments. See also prototype.
5533 vendorarch (vendorarch.U):
5534 This variable contains the value of the PERL_VENDORARCH symbol.
5535 It may have a ~ on the front.
5536 The standard distribution will put nothing in this directory.
5537 Vendors who distribute perl may wish to place their own
5538 architecture-dependent modules and extensions in this directory with
5539 MakeMaker Makefile.PL INSTALLDIRS=vendor
5540 or equivalent. See INSTALL for details.
5542 vendorarchexp (vendorarch.U):
5543 This variable is the ~name expanded version of vendorarch, so that you
5544 may use it directly in Makefiles or shell scripts.
5546 vendorbin (vendorbin.U):
5547 This variable contains the eventual value of the VENDORBIN symbol.
5548 It may have a ~ on the front.
5549 The standard distribution will put nothing in this directory.
5550 Vendors who distribute perl may wish to place additional
5551 binaries in this directory with
5552 MakeMaker Makefile.PL INSTALLDIRS=vendor
5553 or equivalent. See INSTALL for details.
5555 vendorbinexp (vendorbin.U):
5556 This variable is the ~name expanded version of vendorbin, so that you
5557 may use it directly in Makefiles or shell scripts.
5559 vendorhtml1dir (vendorhtml1dir.U):
5560 This variable contains the name of the directory for html
5561 pages. It may have a ~ on the front.
5562 The standard distribution will put nothing in this directory.
5563 Vendors who distribute perl may wish to place their own
5564 html pages in this directory with
5565 MakeMaker Makefile.PL INSTALLDIRS=vendor
5566 or equivalent. See INSTALL for details.
5568 vendorhtml1direxp (vendorhtml1dir.U):
5569 This variable is the ~name expanded version of vendorhtml1dir, so that you
5570 may use it directly in Makefiles or shell scripts.
5572 vendorhtml3dir (vendorhtml3dir.U):
5573 This variable contains the name of the directory for html
5574 library pages. It may have a ~ on the front.
5575 The standard distribution will put nothing in this directory.
5576 Vendors who distribute perl may wish to place their own
5577 html pages for modules and extensions in this directory with
5578 MakeMaker Makefile.PL INSTALLDIRS=vendor
5579 or equivalent. See INSTALL for details.
5581 vendorhtml3direxp (vendorhtml3dir.U):
5582 This variable is the ~name expanded version of vendorhtml3dir, so that you
5583 may use it directly in Makefiles or shell scripts.
5585 vendorlib (vendorlib.U):
5586 This variable contains the eventual value of the VENDORLIB symbol,
5587 which is the name of the private library for this package.
5588 The standard distribution will put nothing in this directory.
5589 Vendors who distribute perl may wish to place their own
5590 modules in this directory with
5591 MakeMaker Makefile.PL INSTALLDIRS=vendor
5592 or equivalent. See INSTALL for details.
5594 vendorlib_stem (vendorlib.U):
5595 This variable is $vendorlibexp with any trailing version-specific component
5596 removed. The elements in inc_version_list (inc_version_list.U) can
5597 be tacked onto this variable to generate a list of directories to search.
5599 vendorlibexp (vendorlib.U):
5600 This variable is the ~name expanded version of vendorlib, so that you
5601 may use it directly in Makefiles or shell scripts.
5603 vendorman1dir (vendorman1dir.U):
5604 This variable contains the name of the directory for man1
5605 pages. It may have a ~ on the front.
5606 The standard distribution will put nothing in this directory.
5607 Vendors who distribute perl may wish to place their own
5608 man1 pages in this directory with
5609 MakeMaker Makefile.PL INSTALLDIRS=vendor
5610 or equivalent. See INSTALL for details.
5612 vendorman1direxp (vendorman1dir.U):
5613 This variable is the ~name expanded version of vendorman1dir, so that you
5614 may use it directly in Makefiles or shell scripts.
5616 vendorman3dir (vendorman3dir.U):
5617 This variable contains the name of the directory for man3
5618 pages. It may have a ~ on the front.
5619 The standard distribution will put nothing in this directory.
5620 Vendors who distribute perl may wish to place their own
5621 man3 pages in this directory with
5622 MakeMaker Makefile.PL INSTALLDIRS=vendor
5623 or equivalent. See INSTALL for details.
5625 vendorman3direxp (vendorman3dir.U):
5626 This variable is the ~name expanded version of vendorman3dir, so that you
5627 may use it directly in Makefiles or shell scripts.
5629 vendorprefix (vendorprefix.U):
5630 This variable holds the full absolute path of the directory below
5631 which the vendor will install add-on packages.
5632 See INSTALL for usage and examples.
5634 vendorprefixexp (vendorprefix.U):
5635 This variable holds the full absolute path of the directory below
5636 which the vendor will install add-on packages. Derived from vendorprefix.
5638 vendorscript (vendorscript.U):
5639 This variable contains the eventual value of the VENDORSCRIPT symbol.
5640 It may have a ~ on the front.
5641 The standard distribution will put nothing in this directory.
5642 Vendors who distribute perl may wish to place additional
5643 executable scripts in this directory with
5644 MakeMaker Makefile.PL INSTALLDIRS=vendor
5645 or equivalent. See INSTALL for details.
5647 vendorscriptexp (vendorscript.U):
5648 This variable is the ~name expanded version of vendorscript, so that you
5649 may use it directly in Makefiles or shell scripts.
5651 version (patchlevel.U):
5652 The full version number of this package, such as 5.6.1 (or 5_6_1).
5653 This combines revision, patchlevel, and subversion to get the
5654 full version number, including any possible subversions.
5655 This is suitable for use as a directory name, and hence is
5656 filesystem dependent.
5658 version_patchlevel_string (patchlevel.U):
5659 This is a string combining version, subversion and
5660 perl_patchlevel (if perl_patchlevel is non-zero).
5661 It is typically something like
5662 'version 7 subversion 1' or
5663 'version 7 subversion 1 patchlevel 11224'
5664 It is computed here to avoid duplication of code in myconfig.SH
5667 versiononly (versiononly.U):
5668 If set, this symbol indicates that only the version-specific
5669 components of a perl installation should be installed.
5670 This may be useful for making a test installation of a new
5671 version without disturbing the existing installation.
5672 Setting versiononly is equivalent to setting installperl's -v option.
5673 In particular, the non-versioned scripts and programs such as
5674 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5675 (see INSTALL for a more complete list). Nor are the man
5677 Usually, this is undef.
5680 This variable is defined but not used by Configure.
5681 The value is the empty string and is not useful.
5684 This variable holds extra path (space-separated) used to find
5685 libraries on this platform, for example CPU-specific libraries
5686 (on multi-CPU platforms) may be listed here.
5689 This variable holds the name of the compiler compiler we
5690 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5693 This variable contains any additional yacc flags desired by the
5694 user. It is up to the Makefile to use this.
5697 This variable is defined but not used by Configure.
5698 The value is the empty string and is not useful.
5701 This variable is used internally by Configure to determine the
5702 full pathname (if any) of the zip program. After Configure runs,
5703 the value is reset to a plain "zip" and is not useful.