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_AINTL symbol, which
410 indicates to the C program that the aintl() routine is available.
411 If copysignl is also present we can emulate modfl.
414 This variable conditionally defines the HAS_ALARM symbol, which
415 indicates to the C program that the alarm() routine is available.
417 d_archlib (archlib.U):
418 This variable conditionally defines ARCHLIB to hold the pathname
419 of architecture-dependent library files for $package. If
420 $archlib is the same as $privlib, then this is set to undef.
422 d_asctime64 (d_timefuncs64.U):
423 This variable conditionally defines the HAS_ASCTIME64 symbol, which
424 indicates to the C program that the asctime64 () routine is available.
426 d_asctime_r (d_asctime_r.U):
427 This variable conditionally defines the HAS_ASCTIME_R symbol,
428 which indicates to the C program that the asctime_r()
429 routine is available.
432 This variable conditionally defines the HAS_ATOLF symbol, which
433 indicates to the C program that the atolf() routine is available.
436 This variable conditionally defines the HAS_ATOLL symbol, which
437 indicates to the C program that the atoll() routine is available.
439 d_attribute_deprecated (d_attribut.U):
440 This variable conditionally defines HASATTRIBUTE_DEPRECATED, which
441 indicates that GCC can handle the attribute for marking deprecated
444 d_attribute_format (d_attribut.U):
445 This variable conditionally defines HASATTRIBUTE_FORMAT, which
446 indicates the C compiler can check for printf-like formats.
448 d_attribute_malloc (d_attribut.U):
449 This variable conditionally defines HASATTRIBUTE_MALLOC, which
450 indicates the C compiler can understand functions as having
451 malloc-like semantics.
453 d_attribute_nonnull (d_attribut.U):
454 This variable conditionally defines HASATTRIBUTE_NONNULL, which
455 indicates that the C compiler can know that certain arguments
456 must not be NULL, and will check accordingly at compile time.
458 d_attribute_noreturn (d_attribut.U):
459 This variable conditionally defines HASATTRIBUTE_NORETURN, which
460 indicates that the C compiler can know that certain functions
461 are guaranteed never to return.
463 d_attribute_pure (d_attribut.U):
464 This variable conditionally defines HASATTRIBUTE_PURE, which
465 indicates that the C compiler can know that certain functions
466 are "pure" functions, meaning that they have no side effects, and
467 only rely on function input and/or global data for their results.
469 d_attribute_unused (d_attribut.U):
470 This variable conditionally defines HASATTRIBUTE_UNUSED, which
471 indicates that the C compiler can know that certain variables
472 and arguments may not always be used, and to not throw warnings
473 if they don't get used.
475 d_attribute_warn_unused_result (d_attribut.U):
476 This variable conditionally defines
477 HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
478 compiler can know that certain functions have a return values
479 that must not be ignored, such as malloc() or open().
481 d_backtrace (d_backtrace.U):
482 This variable conditionally defines the HAS_BACKTRACE symbol, which
483 indicates to the C program that the backtrace() routine is available
484 to get a stack trace.
487 This variable conditionally defines the HAS_BCMP symbol if
488 the bcmp() routine is available to compare strings.
491 This variable conditionally defines the HAS_BCOPY symbol if
492 the bcopy() routine is available to copy strings.
495 This symbol conditionally defines the symbol BSD when running on a
498 d_bsdgetpgrp (d_getpgrp.U):
499 This variable conditionally defines USE_BSD_GETPGRP if
500 getpgrp needs one arguments whereas USG one needs none.
502 d_bsdsetpgrp (d_setpgrp.U):
503 This variable conditionally defines USE_BSD_SETPGRP if
504 setpgrp needs two arguments whereas USG one needs none.
505 See also d_setpgid for a POSIX interface.
507 d_builtin_choose_expr (d_builtin.U):
508 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
509 indicates that the compiler supports __builtin_choose_expr(x,y,z).
510 This built-in function is analogous to the "x?y:z" operator in C,
511 except that the expression returned has its type unaltered by
512 promotion rules. Also, the built-in function does not evaluate
513 the expression that was not chosen.
515 d_builtin_expect (d_builtin.U):
516 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
517 that the compiler supports __builtin_expect(exp,c). You may use
518 __builtin_expect to provide the compiler with branch prediction
522 This variable conditionally defines the HAS_BZERO symbol if
523 the bzero() routine is available to set memory to 0.
525 d_c99_variadic_macros (d_c99_variadic.U):
526 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
527 symbol, which indicates to the C program that C99 variadic macros
530 d_casti32 (d_casti32.U):
531 This variable conditionally defines CASTI32, which indicates
532 whether the C compiler can cast large floats to 32-bit ints.
534 d_castneg (d_castneg.U):
535 This variable conditionally defines CASTNEG, which indicates
536 whether the C compiler can cast negative float to unsigned.
538 d_charvspr (d_vprintf.U):
539 This variable conditionally defines CHARVSPRINTF if this system
540 has vsprintf returning type (char*). The trend seems to be to
541 declare it as "int vsprintf()".
544 This variable conditionally defines the HAS_CHOWN symbol, which
545 indicates to the C program that the chown() routine is available.
547 d_chroot (d_chroot.U):
548 This variable conditionally defines the HAS_CHROOT symbol, which
549 indicates to the C program that the chroot() routine is available.
551 d_chsize (d_chsize.U):
552 This variable conditionally defines the CHSIZE symbol, which
553 indicates to the C program that the chsize() routine is available
554 to truncate files. You might need a -lx to get this routine.
557 This variable conditionally defines the HAS_CLASS symbol, which
558 indicates to the C program that the class() routine is available.
560 d_clearenv (d_clearenv.U):
561 This variable conditionally defines the HAS_CLEARENV symbol, which
562 indicates to the C program that the clearenv () routine is available.
564 d_closedir (d_closedir.U):
565 This variable conditionally defines HAS_CLOSEDIR if closedir() is
568 d_cmsghdr_s (d_cmsghdr_s.U):
569 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
570 which indicates that the struct cmsghdr is supported.
573 This variable conditionally defines the HASCONST symbol, which
574 indicates to the C program that this C compiler knows about the
577 d_copysignl (d_copysignl.U):
578 This variable conditionally defines the HAS_COPYSIGNL symbol, which
579 indicates to the C program that the copysignl() routine is available.
580 If aintl is also present we can emulate modfl.
582 d_cplusplus (d_cplusplus.U):
583 This variable conditionally defines the USE_CPLUSPLUS symbol, which
584 indicates that a C++ compiler was used to compiled Perl and will be
585 used to compile extensions.
588 This variable conditionally defines the CRYPT symbol, which
589 indicates to the C program that the crypt() routine is available
590 to encrypt passwords and the like.
592 d_crypt_r (d_crypt_r.U):
593 This variable conditionally defines the HAS_CRYPT_R symbol,
594 which indicates to the C program that the crypt_r()
595 routine is available.
598 This variable conditionally defines the CSH symbol, which
599 indicates to the C program that the C-shell exists.
601 d_ctermid (d_ctermid.U):
602 This variable conditionally defines CTERMID if ctermid() is
603 available to generate filename for terminal.
605 d_ctermid_r (d_ctermid_r.U):
606 This variable conditionally defines the HAS_CTERMID_R symbol,
607 which indicates to the C program that the ctermid_r()
608 routine is available.
610 d_ctime64 (d_timefuncs64.U):
611 This variable conditionally defines the HAS_CTIME64 symbol, which
612 indicates to the C program that the ctime64 () routine is available.
614 d_ctime_r (d_ctime_r.U):
615 This variable conditionally defines the HAS_CTIME_R symbol,
616 which indicates to the C program that the ctime_r()
617 routine is available.
619 d_cuserid (d_cuserid.U):
620 This variable conditionally defines the HAS_CUSERID symbol, which
621 indicates to the C program that the cuserid() routine is available
622 to get character login names.
624 d_dbl_dig (d_dbl_dig.U):
625 This variable conditionally defines d_dbl_dig if this system's
626 header files provide DBL_DIG, which is the number of significant
627 digits in a double precision number.
629 d_dbminitproto (d_dbminitproto.U):
630 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
631 which indicates to the C program that the system provides
632 a prototype for the dbminit() function. Otherwise, it is
633 up to the program to supply one.
635 d_difftime (d_difftime.U):
636 This variable conditionally defines the HAS_DIFFTIME symbol, which
637 indicates to the C program that the difftime() routine is available.
639 d_difftime64 (d_timefuncs64.U):
640 This variable conditionally defines the HAS_DIFFTIME64 symbol, which
641 indicates to the C program that the difftime64 () routine is available.
643 d_dir_dd_fd (d_dir_dd_fd.U):
644 This variable conditionally defines the HAS_DIR_DD_FD symbol, which
645 indicates that the DIR directory stream type contains a member
646 variable called dd_fd.
649 This variable conditionally defines the HAS_DIRFD constant,
650 which indicates to the C program that dirfd() is available
651 to return the file descriptor of a directory stream.
653 d_dirnamlen (i_dirent.U):
654 This variable conditionally defines DIRNAMLEN, which indicates
655 to the C program that the length of directory entry names is
656 provided by a d_namelen field.
658 d_dladdr (d_dladdr.U):
659 This variable conditionally defines the HAS_DLADDR symbol, which
660 indicates to the C program that the dladdr() routine is available
661 to get a stack trace.
663 d_dlerror (d_dlerror.U):
664 This variable conditionally defines the HAS_DLERROR symbol, which
665 indicates to the C program that the dlerror() routine is available.
667 d_dlopen (d_dlopen.U):
668 This variable conditionally defines the HAS_DLOPEN symbol, which
669 indicates to the C program that the dlopen() routine is available.
671 d_dlsymun (d_dlsymun.U):
672 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
673 indicates that we need to prepend an underscore to the symbol
674 name before calling dlsym().
676 d_dosuid (d_dosuid.U):
677 This variable conditionally defines the symbol DOSUID, which
678 tells the C program that it should insert setuid emulation code
679 on hosts which have setuid #! scripts disabled.
681 d_drand48_r (d_drand48_r.U):
682 This variable conditionally defines the HAS_DRAND48_R symbol,
683 which indicates to the C program that the drand48_r()
684 routine is available.
686 d_drand48proto (d_drand48proto.U):
687 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
688 which indicates to the C program that the system provides
689 a prototype for the drand48() function. Otherwise, it is
690 up to the program to supply one.
693 This variable conditionally defines HAS_DUP2 if dup2() is
694 available to duplicate file descriptors.
696 d_eaccess (d_eaccess.U):
697 This variable conditionally defines the HAS_EACCESS symbol, which
698 indicates to the C program that the eaccess() routine is available.
700 d_endgrent (d_endgrent.U):
701 This variable conditionally defines the HAS_ENDGRENT symbol, which
702 indicates to the C program that the endgrent() routine is available
703 for sequential access of the group database.
705 d_endgrent_r (d_endgrent_r.U):
706 This variable conditionally defines the HAS_ENDGRENT_R symbol,
707 which indicates to the C program that the endgrent_r()
708 routine is available.
710 d_endhent (d_endhent.U):
711 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
712 available to close whatever was being used for host queries.
714 d_endhostent_r (d_endhostent_r.U):
715 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
716 which indicates to the C program that the endhostent_r()
717 routine is available.
719 d_endnent (d_endnent.U):
720 This variable conditionally defines HAS_ENDNETENT if endnetent() is
721 available to close whatever was being used for network queries.
723 d_endnetent_r (d_endnetent_r.U):
724 This variable conditionally defines the HAS_ENDNETENT_R symbol,
725 which indicates to the C program that the endnetent_r()
726 routine is available.
728 d_endpent (d_endpent.U):
729 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
730 available to close whatever was being used for protocol queries.
732 d_endprotoent_r (d_endprotoent_r.U):
733 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
734 which indicates to the C program that the endprotoent_r()
735 routine is available.
737 d_endpwent (d_endpwent.U):
738 This variable conditionally defines the HAS_ENDPWENT symbol, which
739 indicates to the C program that the endpwent() routine is available
740 for sequential access of the passwd database.
742 d_endpwent_r (d_endpwent_r.U):
743 This variable conditionally defines the HAS_ENDPWENT_R symbol,
744 which indicates to the C program that the endpwent_r()
745 routine is available.
747 d_endsent (d_endsent.U):
748 This variable conditionally defines HAS_ENDSERVENT if endservent() is
749 available to close whatever was being used for service queries.
751 d_endservent_r (d_endservent_r.U):
752 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
753 which indicates to the C program that the endservent_r()
754 routine is available.
756 d_eofnblk (nblock_io.U):
757 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
758 when reading from a non-blocking I/O source.
761 This variable conditionally defines the symbols EUNICE and VAX, which
762 alerts the C program that it must deal with idiosyncrasies of VMS.
764 d_faststdio (d_faststdio.U):
765 This variable conditionally defines the HAS_FAST_STDIO symbol,
766 which indicates to the C program that the "fast stdio" is available
767 to manipulate the stdio buffers directly.
769 d_fchdir (d_fchdir.U):
770 This variable conditionally defines the HAS_FCHDIR symbol, which
771 indicates to the C program that the fchdir() routine is available.
773 d_fchmod (d_fchmod.U):
774 This variable conditionally defines the HAS_FCHMOD symbol, which
775 indicates to the C program that the fchmod() routine is available
776 to change mode of opened files.
778 d_fchown (d_fchown.U):
779 This variable conditionally defines the HAS_FCHOWN symbol, which
780 indicates to the C program that the fchown() routine is available
781 to change ownership of opened files.
784 This variable conditionally defines the HAS_FCNTL symbol, and indicates
785 whether the fcntl() function exists
787 d_fcntl_can_lock (d_fcntl_can_lock.U):
788 This variable conditionally defines the FCNTL_CAN_LOCK symbol
789 and indicates whether file locking with fcntl() works.
791 d_fd_macros (d_fd_set.U):
792 This variable contains the eventual value of the HAS_FD_MACROS symbol,
793 which indicates if your C compiler knows about the macros which
794 manipulate an fd_set.
796 d_fd_set (d_fd_set.U):
797 This variable contains the eventual value of the HAS_FD_SET symbol,
798 which indicates if your C compiler knows about the fd_set typedef.
800 d_fds_bits (d_fd_set.U):
801 This variable contains the eventual value of the HAS_FDS_BITS symbol,
802 which indicates if your fd_set typedef contains the fds_bits member.
803 If you have an fd_set typedef, but the dweebs who installed it did
804 a half-fast job and neglected to provide the macros to manipulate
805 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
807 d_fgetpos (d_fgetpos.U):
808 This variable conditionally defines HAS_FGETPOS if fgetpos() is
809 available to get the file position indicator.
811 d_finite (d_finite.U):
812 This variable conditionally defines the HAS_FINITE symbol, which
813 indicates to the C program that the finite() routine is available.
815 d_finitel (d_finitel.U):
816 This variable conditionally defines the HAS_FINITEL symbol, which
817 indicates to the C program that the finitel() routine is available.
819 d_flexfnam (d_flexfnam.U):
820 This variable conditionally defines the FLEXFILENAMES symbol, which
821 indicates that the system supports filenames longer than 14 characters.
824 This variable conditionally defines HAS_FLOCK if flock() is
825 available to do file locking.
827 d_flockproto (d_flockproto.U):
828 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
829 which indicates to the C program that the system provides
830 a prototype for the flock() function. Otherwise, it is
831 up to the program to supply one.
834 This variable conditionally defines the HAS_FORK symbol, which
835 indicates to the C program that the fork() routine is available.
837 d_fp_class (d_fp_class.U):
838 This variable conditionally defines the HAS_FP_CLASS symbol, which
839 indicates to the C program that the fp_class() routine is available.
841 d_fpathconf (d_pathconf.U):
842 This variable conditionally defines the HAS_FPATHCONF symbol, which
843 indicates to the C program that the pathconf() routine is available
844 to determine file-system related limits and options associated
845 with a given open file descriptor.
847 d_fpclass (d_fpclass.U):
848 This variable conditionally defines the HAS_FPCLASS symbol, which
849 indicates to the C program that the fpclass() routine is available.
851 d_fpclassify (d_fpclassify.U):
852 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
853 indicates to the C program that the fpclassify() routine is available.
855 d_fpclassl (d_fpclassl.U):
856 This variable conditionally defines the HAS_FPCLASSL symbol, which
857 indicates to the C program that the fpclassl() routine is available.
859 d_fpos64_t (d_fpos64_t.U):
860 This symbol will be defined if the C compiler supports fpos64_t.
862 d_frexpl (d_frexpl.U):
863 This variable conditionally defines the HAS_FREXPL symbol, which
864 indicates to the C program that the frexpl() routine is available.
866 d_fs_data_s (d_fs_data_s.U):
867 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
868 which indicates that the struct fs_data is supported.
870 d_fseeko (d_fseeko.U):
871 This variable conditionally defines the HAS_FSEEKO symbol, which
872 indicates to the C program that the fseeko() routine is available.
874 d_fsetpos (d_fsetpos.U):
875 This variable conditionally defines HAS_FSETPOS if fsetpos() is
876 available to set the file position indicator.
878 d_fstatfs (d_fstatfs.U):
879 This variable conditionally defines the HAS_FSTATFS symbol, which
880 indicates to the C program that the fstatfs() routine is available.
882 d_fstatvfs (d_statvfs.U):
883 This variable conditionally defines the HAS_FSTATVFS symbol, which
884 indicates to the C program that the fstatvfs() routine is available.
887 This variable conditionally defines the HAS_FSYNC symbol, which
888 indicates to the C program that the fsync() routine is available.
890 d_ftello (d_ftello.U):
891 This variable conditionally defines the HAS_FTELLO symbol, which
892 indicates to the C program that the ftello() routine is available.
895 This variable conditionally defines the HAS_FTIME symbol, which indicates
896 that the ftime() routine exists. The ftime() routine is basically
897 a sub-second accuracy clock.
899 d_futimes (d_futimes.U):
900 This variable conditionally defines the HAS_FUTIMES symbol, which
901 indicates to the C program that the futimes() routine is available.
903 d_Gconvert (d_gconvert.U):
904 This variable holds what Gconvert is defined as to convert
905 floating point numbers into strings. By default, Configure
906 sets this macro to use the first of gconvert, gcvt, or sprintf
907 that pass sprintf-%g-like behavior tests. If perl is using
908 long doubles, the macro uses the first of the following
909 functions that pass Configure's tests: qgcvt, sprintf (if
910 Configure knows how to make sprintf format long doubles--see
911 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
912 The gconvert_preference and gconvert_ld_preference variables
913 can be used to alter Configure's preferences, for doubles and
914 long doubles, respectively. If present, they contain a
915 space-separated list of one or more of the above function
916 names in the order they should be tried.
918 d_Gconvert may be set to override Configure with a platform-
919 specific function. If this function expects a double, a
920 different value may need to be set by the uselongdouble.cbu
921 call-back unit so that long doubles can be formatted without
924 d_gdbm_ndbm_h_uses_prototypes (i_ndbm.U):
925 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
926 which indicates that the gdbm-ndbm.h include file uses real ANSI C
927 prototypes instead of K&R style function declarations. K&R style
928 declarations are unsupported in C++, so the include file requires
929 special handling when using a C++ compiler and this variable is
930 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
931 to get the same information for alternative ndbm.h include files.
933 d_gdbmndbm_h_uses_prototypes (i_ndbm.U):
934 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
935 which indicates that the gdbm/ndbm.h include file uses real ANSI C
936 prototypes instead of K&R style function declarations. K&R style
937 declarations are unsupported in C++, so the include file requires
938 special handling when using a C++ compiler and this variable is
939 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
940 to get the same information for alternative ndbm.h include files.
942 d_getaddrinfo (d_getaddrinfo.U):
943 This variable conditionally defines the HAS_GETADDRINFO symbol,
944 which indicates to the C program that the getaddrinfo() function
947 d_getcwd (d_getcwd.U):
948 This variable conditionally defines the HAS_GETCWD symbol, which
949 indicates to the C program that the getcwd() routine is available
950 to get the current working directory.
952 d_getespwnam (d_getespwnam.U):
953 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
954 available to retrieve enhanced (shadow) password entries by name.
956 d_getfsstat (d_getfsstat.U):
957 This variable conditionally defines the HAS_GETFSSTAT symbol, which
958 indicates to the C program that the getfsstat() routine is available.
960 d_getgrent (d_getgrent.U):
961 This variable conditionally defines the HAS_GETGRENT symbol, which
962 indicates to the C program that the getgrent() routine is available
963 for sequential access of the group database.
965 d_getgrent_r (d_getgrent_r.U):
966 This variable conditionally defines the HAS_GETGRENT_R symbol,
967 which indicates to the C program that the getgrent_r()
968 routine is available.
970 d_getgrgid_r (d_getgrgid_r.U):
971 This variable conditionally defines the HAS_GETGRGID_R symbol,
972 which indicates to the C program that the getgrgid_r()
973 routine is available.
975 d_getgrnam_r (d_getgrnam_r.U):
976 This variable conditionally defines the HAS_GETGRNAM_R symbol,
977 which indicates to the C program that the getgrnam_r()
978 routine is available.
980 d_getgrps (d_getgrps.U):
981 This variable conditionally defines the HAS_GETGROUPS symbol, which
982 indicates to the C program that the getgroups() routine is available
983 to get the list of process groups.
985 d_gethbyaddr (d_gethbyad.U):
986 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
987 indicates to the C program that the gethostbyaddr() routine is available
988 to look up hosts by their IP addresses.
990 d_gethbyname (d_gethbynm.U):
991 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
992 indicates to the C program that the gethostbyname() routine is available
993 to look up host names in some data base or other.
995 d_gethent (d_gethent.U):
996 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
997 available to look up host names in some data base or another.
999 d_gethname (d_gethname.U):
1000 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
1001 indicates to the C program that the gethostname() routine may be
1002 used to derive the host name.
1004 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
1005 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
1006 which indicates to the C program that the gethostbyaddr_r()
1007 routine is available.
1009 d_gethostbyname_r (d_gethostbyname_r.U):
1010 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
1011 which indicates to the C program that the gethostbyname_r()
1012 routine is available.
1014 d_gethostent_r (d_gethostent_r.U):
1015 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
1016 which indicates to the C program that the gethostent_r()
1017 routine is available.
1019 d_gethostprotos (d_gethostprotos.U):
1020 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
1021 which indicates to the C program that <netdb.h> supplies
1022 prototypes for the various gethost*() functions.
1023 See also netdbtype.U for probing for various netdb types.
1025 d_getitimer (d_getitimer.U):
1026 This variable conditionally defines the HAS_GETITIMER symbol, which
1027 indicates to the C program that the getitimer() routine is available.
1029 d_getlogin (d_getlogin.U):
1030 This variable conditionally defines the HAS_GETLOGIN symbol, which
1031 indicates to the C program that the getlogin() routine is available
1032 to get the login name.
1034 d_getlogin_r (d_getlogin_r.U):
1035 This variable conditionally defines the HAS_GETLOGIN_R symbol,
1036 which indicates to the C program that the getlogin_r()
1037 routine is available.
1039 d_getmnt (d_getmnt.U):
1040 This variable conditionally defines the HAS_GETMNT symbol, which
1041 indicates to the C program that the getmnt() routine is available
1042 to retrieve one or more mount info blocks by filename.
1044 d_getmntent (d_getmntent.U):
1045 This variable conditionally defines the HAS_GETMNTENT symbol, which
1046 indicates to the C program that the getmntent() routine is available
1047 to iterate through mounted files to get their mount info.
1049 d_getnameinfo (d_getnameinfo.U):
1050 This variable conditionally defines the HAS_GETNAMEINFO symbol,
1051 which indicates to the C program that the getnameinfo() function
1054 d_getnbyaddr (d_getnbyad.U):
1055 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
1056 indicates to the C program that the getnetbyaddr() routine is available
1057 to look up networks by their IP addresses.
1059 d_getnbyname (d_getnbynm.U):
1060 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
1061 indicates to the C program that the getnetbyname() routine is available
1062 to look up networks by their names.
1064 d_getnent (d_getnent.U):
1065 This variable conditionally defines HAS_GETNETENT if getnetent() is
1066 available to look up network names in some data base or another.
1068 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
1069 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
1070 which indicates to the C program that the getnetbyaddr_r()
1071 routine is available.
1073 d_getnetbyname_r (d_getnetbyname_r.U):
1074 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
1075 which indicates to the C program that the getnetbyname_r()
1076 routine is available.
1078 d_getnetent_r (d_getnetent_r.U):
1079 This variable conditionally defines the HAS_GETNETENT_R symbol,
1080 which indicates to the C program that the getnetent_r()
1081 routine is available.
1083 d_getnetprotos (d_getnetprotos.U):
1084 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1085 which indicates to the C program that <netdb.h> supplies
1086 prototypes for the various getnet*() functions.
1087 See also netdbtype.U for probing for various netdb types.
1089 d_getpagsz (d_getpagsz.U):
1090 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1091 is available to get the system page size.
1093 d_getpbyname (d_getprotby.U):
1094 This variable conditionally defines the HAS_GETPROTOBYNAME
1095 symbol, which indicates to the C program that the
1096 getprotobyname() routine is available to look up protocols
1099 d_getpbynumber (d_getprotby.U):
1100 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1101 symbol, which indicates to the C program that the
1102 getprotobynumber() routine is available to look up protocols
1105 d_getpent (d_getpent.U):
1106 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1107 available to look up protocols in some data base or another.
1109 d_getpgid (d_getpgid.U):
1110 This variable conditionally defines the HAS_GETPGID symbol, which
1111 indicates to the C program that the getpgid(pid) function
1112 is available to get the process group id.
1114 d_getpgrp (d_getpgrp.U):
1115 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1116 available to get the current process group.
1118 d_getpgrp2 (d_getpgrp2.U):
1119 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1120 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1121 is available to get the current process group.
1123 d_getppid (d_getppid.U):
1124 This variable conditionally defines the HAS_GETPPID symbol, which
1125 indicates to the C program that the getppid() routine is available
1126 to get the parent process ID.
1128 d_getprior (d_getprior.U):
1129 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1130 is available to get a process's priority.
1132 d_getprotobyname_r (d_getprotobyname_r.U):
1133 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1134 which indicates to the C program that the getprotobyname_r()
1135 routine is available.
1137 d_getprotobynumber_r (d_getprotobynumber_r.U):
1138 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1139 which indicates to the C program that the getprotobynumber_r()
1140 routine is available.
1142 d_getprotoent_r (d_getprotoent_r.U):
1143 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1144 which indicates to the C program that the getprotoent_r()
1145 routine is available.
1147 d_getprotoprotos (d_getprotoprotos.U):
1148 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1149 which indicates to the C program that <netdb.h> supplies
1150 prototypes for the various getproto*() functions.
1151 See also netdbtype.U for probing for various netdb types.
1153 d_getprpwnam (d_getprpwnam.U):
1154 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1155 available to retrieve protected (shadow) password entries by name.
1157 d_getpwent (d_getpwent.U):
1158 This variable conditionally defines the HAS_GETPWENT symbol, which
1159 indicates to the C program that the getpwent() routine is available
1160 for sequential access of the passwd database.
1162 d_getpwent_r (d_getpwent_r.U):
1163 This variable conditionally defines the HAS_GETPWENT_R symbol,
1164 which indicates to the C program that the getpwent_r()
1165 routine is available.
1167 d_getpwnam_r (d_getpwnam_r.U):
1168 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1169 which indicates to the C program that the getpwnam_r()
1170 routine is available.
1172 d_getpwuid_r (d_getpwuid_r.U):
1173 This variable conditionally defines the HAS_GETPWUID_R symbol,
1174 which indicates to the C program that the getpwuid_r()
1175 routine is available.
1177 d_getsbyname (d_getsrvby.U):
1178 This variable conditionally defines the HAS_GETSERVBYNAME
1179 symbol, which indicates to the C program that the
1180 getservbyname() routine is available to look up services
1183 d_getsbyport (d_getsrvby.U):
1184 This variable conditionally defines the HAS_GETSERVBYPORT
1185 symbol, which indicates to the C program that the
1186 getservbyport() routine is available to look up services
1189 d_getsent (d_getsent.U):
1190 This variable conditionally defines HAS_GETSERVENT if getservent() is
1191 available to look up network services in some data base or another.
1193 d_getservbyname_r (d_getservbyname_r.U):
1194 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1195 which indicates to the C program that the getservbyname_r()
1196 routine is available.
1198 d_getservbyport_r (d_getservbyport_r.U):
1199 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1200 which indicates to the C program that the getservbyport_r()
1201 routine is available.
1203 d_getservent_r (d_getservent_r.U):
1204 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1205 which indicates to the C program that the getservent_r()
1206 routine is available.
1208 d_getservprotos (d_getservprotos.U):
1209 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1210 which indicates to the C program that <netdb.h> supplies
1211 prototypes for the various getserv*() functions.
1212 See also netdbtype.U for probing for various netdb types.
1214 d_getspnam (d_getspnam.U):
1215 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1216 available to retrieve SysV shadow password entries by name.
1218 d_getspnam_r (d_getspnam_r.U):
1219 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1220 which indicates to the C program that the getspnam_r()
1221 routine is available.
1223 d_gettimeod (d_ftime.U):
1224 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1225 indicates that the gettimeofday() system call exists (to obtain a
1226 sub-second accuracy clock). You should probably include <sys/resource.h>.
1228 d_gmtime64 (d_timefuncs64.U):
1229 This variable conditionally defines the HAS_GMTIME64 symbol, which
1230 indicates to the C program that the gmtime64 () routine is available.
1232 d_gmtime_r (d_gmtime_r.U):
1233 This variable conditionally defines the HAS_GMTIME_R symbol,
1234 which indicates to the C program that the gmtime_r()
1235 routine is available.
1237 d_gnulibc (d_gnulibc.U):
1238 Defined if we're dealing with the GNU C Library.
1240 d_grpasswd (i_grp.U):
1241 This variable conditionally defines GRPASSWD, which indicates
1242 that struct group in <grp.h> contains gr_passwd.
1244 d_hasmntopt (d_hasmntopt.U):
1245 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1246 indicates to the C program that the hasmntopt() routine is available
1247 to query the mount options of file systems.
1249 d_htonl (d_htonl.U):
1250 This variable conditionally defines HAS_HTONL if htonl() and its
1251 friends are available to do network order byte swapping.
1253 d_ilogbl (d_ilogbl.U):
1254 This variable conditionally defines the HAS_ILOGBL symbol, which
1255 indicates to the C program that the ilogbl() routine is available.
1256 If scalbnl is also present we can emulate frexpl.
1258 d_inc_version_list (inc_version_list.U):
1259 This variable conditionally defines PERL_INC_VERSION_LIST.
1260 It is set to undef when PERL_INC_VERSION_LIST is empty.
1262 d_index (d_strchr.U):
1263 This variable conditionally defines HAS_INDEX if index() and
1264 rindex() are available for string searching.
1266 d_inetaton (d_inetaton.U):
1267 This variable conditionally defines the HAS_INET_ATON symbol, which
1268 indicates to the C program that the inet_aton() function is available
1269 to parse IP address "dotted-quad" strings.
1271 d_inetntop (d_inetntop.U):
1272 This variable conditionally defines the HAS_INETNTOP symbol,
1273 which indicates to the C program that the inet_ntop() function
1276 d_inetpton (d_inetpton.U):
1277 This variable conditionally defines the HAS_INETPTON symbol,
1278 which indicates to the C program that the inet_pton() function
1281 d_int64_t (d_int64_t.U):
1282 This symbol will be defined if the C compiler supports int64_t.
1284 d_ip_mreq (d_socket.U):
1285 This variable conditionally defines the HAS_IP_MREQ symbol, which
1286 indicates the availability of a struct ip_mreq.
1288 d_ip_mreq_source (d_socket.U):
1289 This variable conditionally defines the HAS_IP_MREQ_SOURCE symbol,
1290 which indicates the availability of a struct ip_mreq_source.
1292 d_ipv6_mreq (d_socket.U):
1293 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
1294 indicates the availability of a struct ipv6_mreq.
1296 d_ipv6_mreq_source (d_socket.U):
1297 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE symbol,
1298 which indicates the availability of a struct ipv6_mreq_source.
1300 d_isascii (d_isascii.U):
1301 This variable conditionally defines the HAS_ISASCII constant,
1302 which indicates to the C program that isascii() is available.
1304 d_isblank (d_isblank.U):
1305 This variable conditionally defines the HAS_ISBLANK constant,
1306 which indicates to the C program that isblank() is available.
1308 d_isfinite (d_isfinite.U):
1309 This variable conditionally defines the HAS_ISFINITE symbol, which
1310 indicates to the C program that the isfinite() routine is available.
1312 d_isinf (d_isinf.U):
1313 This variable conditionally defines the HAS_ISINF symbol, which
1314 indicates to the C program that the isinf() routine is available.
1316 d_isnan (d_isnan.U):
1317 This variable conditionally defines the HAS_ISNAN symbol, which
1318 indicates to the C program that the isnan() routine is available.
1320 d_isnanl (d_isnanl.U):
1321 This variable conditionally defines the HAS_ISNANL symbol, which
1322 indicates to the C program that the isnanl() routine is available.
1324 d_killpg (d_killpg.U):
1325 This variable conditionally defines the HAS_KILLPG symbol, which
1326 indicates to the C program that the killpg() routine is available
1327 to kill process groups.
1329 d_lchown (d_lchown.U):
1330 This variable conditionally defines the HAS_LCHOWN symbol, which
1331 indicates to the C program that the lchown() routine is available
1332 to operate on a symbolic link (instead of following the link).
1334 d_ldbl_dig (d_ldbl_dig.U):
1335 This variable conditionally defines d_ldbl_dig if this system's
1336 header files provide LDBL_DIG, which is the number of significant
1337 digits in a long double precision number.
1339 d_libm_lib_version (d_libm_lib_version.U):
1340 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1341 which indicates to the C program that math.h defines _LIB_VERSION
1342 being available in libm
1344 d_libname_unique (so.U):
1345 This variable is defined if the target system insists on unique
1346 basenames for shared library files. This is currently true on Android,
1347 false everywhere else we know of.
1348 Defaults to 'undef'.
1351 This variable conditionally defines HAS_LINK if link() is
1352 available to create hard links.
1354 d_localtime64 (d_timefuncs64.U):
1355 This variable conditionally defines the HAS_LOCALTIME64 symbol, which
1356 indicates to the C program that the localtime64 () routine is available.
1358 d_localtime_r (d_localtime_r.U):
1359 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1360 which indicates to the C program that the localtime_r()
1361 routine is available.
1363 d_localtime_r_needs_tzset (d_localtime_r.U):
1364 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1365 symbol, which makes us call tzset before localtime_r()
1367 d_locconv (d_locconv.U):
1368 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1369 available for numeric and monetary formatting conventions.
1371 d_lockf (d_lockf.U):
1372 This variable conditionally defines HAS_LOCKF if lockf() is
1373 available to do file locking.
1375 d_longdbl (d_longdbl.U):
1376 This variable conditionally defines HAS_LONG_DOUBLE if
1377 the long double type is supported.
1379 d_longlong (d_longlong.U):
1380 This variable conditionally defines HAS_LONG_LONG if
1381 the long long type is supported.
1383 d_lseekproto (d_lseekproto.U):
1384 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1385 which indicates to the C program that the system provides
1386 a prototype for the lseek() function. Otherwise, it is
1387 up to the program to supply one.
1389 d_lstat (d_lstat.U):
1390 This variable conditionally defines HAS_LSTAT if lstat() is
1391 available to do file stats on symbolic links.
1393 d_madvise (d_madvise.U):
1394 This variable conditionally defines HAS_MADVISE if madvise() is
1395 available to map a file into memory.
1397 d_malloc_good_size (d_malloc_size.U):
1398 This symbol, if defined, indicates that the malloc_good_size
1399 routine is available for use.
1401 d_malloc_size (d_malloc_size.U):
1402 This symbol, if defined, indicates that the malloc_size
1403 routine is available for use.
1405 d_mblen (d_mblen.U):
1406 This variable conditionally defines the HAS_MBLEN symbol, which
1407 indicates to the C program that the mblen() routine is available
1408 to find the number of bytes in a multibye character.
1410 d_mbstowcs (d_mbstowcs.U):
1411 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1412 indicates to the C program that the mbstowcs() routine is available
1413 to convert a multibyte string into a wide character string.
1415 d_mbtowc (d_mbtowc.U):
1416 This variable conditionally defines the HAS_MBTOWC symbol, which
1417 indicates to the C program that the mbtowc() routine is available
1418 to convert multibyte to a wide character.
1420 d_memchr (d_memchr.U):
1421 This variable conditionally defines the HAS_MEMCHR symbol, which
1422 indicates to the C program that the memchr() routine is available
1423 to locate characters within a C string.
1425 d_memcmp (d_memcmp.U):
1426 This variable conditionally defines the HAS_MEMCMP symbol, which
1427 indicates to the C program that the memcmp() routine is available
1428 to compare blocks of memory.
1430 d_memcpy (d_memcpy.U):
1431 This variable conditionally defines the HAS_MEMCPY symbol, which
1432 indicates to the C program that the memcpy() routine is available
1433 to copy blocks of memory.
1435 d_memmove (d_memmove.U):
1436 This variable conditionally defines the HAS_MEMMOVE symbol, which
1437 indicates to the C program that the memmove() routine is available
1438 to copy potentially overlapping blocks of memory.
1440 d_memset (d_memset.U):
1441 This variable conditionally defines the HAS_MEMSET symbol, which
1442 indicates to the C program that the memset() routine is available
1443 to set blocks of memory.
1445 d_mkdir (d_mkdir.U):
1446 This variable conditionally defines the HAS_MKDIR symbol, which
1447 indicates to the C program that the mkdir() routine is available
1448 to create directories..
1450 d_mkdtemp (d_mkdtemp.U):
1451 This variable conditionally defines the HAS_MKDTEMP symbol, which
1452 indicates to the C program that the mkdtemp() routine is available
1453 to exclusively create a uniquely named temporary directory.
1455 d_mkfifo (d_mkfifo.U):
1456 This variable conditionally defines the HAS_MKFIFO symbol, which
1457 indicates to the C program that the mkfifo() routine is available.
1459 d_mkstemp (d_mkstemp.U):
1460 This variable conditionally defines the HAS_MKSTEMP symbol, which
1461 indicates to the C program that the mkstemp() routine is available
1462 to exclusively create and open a uniquely named temporary file.
1464 d_mkstemps (d_mkstemps.U):
1465 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1466 indicates to the C program that the mkstemps() routine is available
1467 to exclusively create and open a uniquely named (with a suffix)
1470 d_mktime (d_mktime.U):
1471 This variable conditionally defines the HAS_MKTIME symbol, which
1472 indicates to the C program that the mktime() routine is available.
1474 d_mktime64 (d_timefuncs64.U):
1475 This variable conditionally defines the HAS_MKTIME64 symbol, which
1476 indicates to the C program that the mktime64 () routine is available.
1479 This variable conditionally defines HAS_MMAP if mmap() is
1480 available to map a file into memory.
1482 d_modfl (d_modfl.U):
1483 This variable conditionally defines the HAS_MODFL symbol, which
1484 indicates to the C program that the modfl() routine is available.
1486 d_modfl_pow32_bug (d_modfl.U):
1487 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1488 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1489 For example from 4294967303.150000 one would get 4294967302.000000
1490 and 1.150000. The bug has been seen in certain versions of glibc,
1491 release 2.2.2 is known to be okay.
1493 d_modflproto (d_modfl.U):
1494 This symbol, if defined, indicates that the system provides
1495 a prototype for the modfl() function. Otherwise, it is up
1496 to the program to supply one. C99 says it should be
1497 long double modfl(long double, long double *);
1499 d_mprotect (d_mprotect.U):
1500 This variable conditionally defines HAS_MPROTECT if mprotect() is
1501 available to modify the access protection of a memory mapped file.
1504 This variable conditionally defines the HAS_MSG symbol, which
1505 indicates that the entire msg*(2) library is present.
1507 d_msg_ctrunc (d_socket.U):
1508 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1509 which indicates that the MSG_CTRUNC is available. #ifdef is
1510 not enough because it may be an enum, glibc has been known to do this.
1512 d_msg_dontroute (d_socket.U):
1513 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1514 which indicates that the MSG_DONTROUTE is available. #ifdef is
1515 not enough because it may be an enum, glibc has been known to do this.
1517 d_msg_oob (d_socket.U):
1518 This variable conditionally defines the HAS_MSG_OOB symbol,
1519 which indicates that the MSG_OOB is available. #ifdef is
1520 not enough because it may be an enum, glibc has been known to do this.
1522 d_msg_peek (d_socket.U):
1523 This variable conditionally defines the HAS_MSG_PEEK symbol,
1524 which indicates that the MSG_PEEK is available. #ifdef is
1525 not enough because it may be an enum, glibc has been known to do this.
1527 d_msg_proxy (d_socket.U):
1528 This variable conditionally defines the HAS_MSG_PROXY symbol,
1529 which indicates that the MSG_PROXY is available. #ifdef is
1530 not enough because it may be an enum, glibc has been known to do this.
1532 d_msgctl (d_msgctl.U):
1533 This variable conditionally defines the HAS_MSGCTL symbol, which
1534 indicates to the C program that the msgctl() routine is available.
1536 d_msgget (d_msgget.U):
1537 This variable conditionally defines the HAS_MSGGET symbol, which
1538 indicates to the C program that the msgget() routine is available.
1540 d_msghdr_s (d_msghdr_s.U):
1541 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1542 which indicates that the struct msghdr is supported.
1544 d_msgrcv (d_msgrcv.U):
1545 This variable conditionally defines the HAS_MSGRCV symbol, which
1546 indicates to the C program that the msgrcv() routine is available.
1548 d_msgsnd (d_msgsnd.U):
1549 This variable conditionally defines the HAS_MSGSND symbol, which
1550 indicates to the C program that the msgsnd() routine is available.
1552 d_msync (d_msync.U):
1553 This variable conditionally defines HAS_MSYNC if msync() is
1554 available to synchronize a mapped file.
1556 d_munmap (d_munmap.U):
1557 This variable conditionally defines HAS_MUNMAP if munmap() is
1558 available to unmap a region mapped by mmap().
1560 d_mymalloc (mallocsrc.U):
1561 This variable conditionally defines MYMALLOC in case other parts
1562 of the source want to take special action if MYMALLOC is used.
1563 This may include different sorts of profiling or error detection.
1566 This variable conditionally defines the HAS_NDBM symbol, which
1567 indicates that both the ndbm.h include file and an appropriate ndbm
1568 library exist. Consult the different i_*ndbm variables
1569 to find out the actual include location. Sometimes, a system has the
1570 header file but not the library. This variable will only be set if
1571 the system has both.
1573 d_ndbm_h_uses_prototypes (i_ndbm.U):
1574 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1575 which indicates that the ndbm.h include file uses real ANSI C
1576 prototypes instead of K&R style function declarations. K&R style
1577 declarations are unsupported in C++, so the include file requires
1578 special handling when using a C++ compiler and this variable is
1579 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1580 to get the same information for alternative ndbm.h include files.
1583 This variable conditionally defines the HAS_NICE symbol, which
1584 indicates to the C program that the nice() routine is available.
1586 d_nl_langinfo (d_nl_langinfo.U):
1587 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1588 indicates to the C program that the nl_langinfo() routine is available.
1590 d_nv_preserves_uv (perlxv.U):
1591 This variable indicates whether a variable of type nvtype
1592 can preserve all the bits a variable of type uvtype.
1594 d_nv_zero_is_allbits_zero (perlxv.U):
1595 This variable indicates whether a variable of type nvtype
1596 stores 0.0 in memory as all bits zero.
1598 d_off64_t (d_off64_t.U):
1599 This symbol will be defined if the C compiler supports off64_t.
1601 d_old_pthread_create_joinable (d_pthrattrj.U):
1602 This variable conditionally defines pthread_create_joinable.
1603 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1605 d_oldpthreads (usethreads.U):
1606 This variable conditionally defines the OLD_PTHREADS_API symbol,
1607 and indicates that Perl should be built to use the old
1608 draft POSIX threads API. This is only potentially meaningful if
1611 d_oldsock (d_socket.U):
1612 This variable conditionally defines the OLDSOCKET symbol, which
1613 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1615 d_open3 (d_open3.U):
1616 This variable conditionally defines the HAS_OPEN3 manifest constant,
1617 which indicates to the C program that the 3 argument version of
1618 the open(2) function is available.
1620 d_pathconf (d_pathconf.U):
1621 This variable conditionally defines the HAS_PATHCONF symbol, which
1622 indicates to the C program that the pathconf() routine is available
1623 to determine file-system related limits and options associated
1624 with a given filename.
1626 d_pause (d_pause.U):
1627 This variable conditionally defines the HAS_PAUSE symbol, which
1628 indicates to the C program that the pause() routine is available
1629 to suspend a process until a signal is received.
1631 d_perl_otherlibdirs (otherlibdirs.U):
1632 This variable conditionally defines PERL_OTHERLIBDIRS, which
1633 contains a colon-separated set of paths for the perl binary to
1634 include in @INC. See also otherlibdirs.
1636 d_phostname (d_gethname.U):
1637 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1638 contains the shell command which, when fed to popen(), may be
1639 used to derive the host name.
1642 This variable conditionally defines the HAS_PIPE symbol, which
1643 indicates to the C program that the pipe() routine is available
1644 to create an inter-process channel.
1647 This variable conditionally defines the HAS_POLL symbol, which
1648 indicates to the C program that the poll() routine is available
1649 to poll active file descriptors.
1651 d_portable (d_portable.U):
1652 This variable conditionally defines the PORTABLE symbol, which
1653 indicates to the C program that it should not assume that it is
1654 running on the machine it was compiled on.
1656 d_prctl (d_prctl.U):
1657 This variable conditionally defines the HAS_PRCTL symbol, which
1658 indicates to the C program that the prctl() routine is available.
1660 d_prctl_set_name (d_prctl.U):
1661 This variable conditionally defines the HAS_PRCTL_SET_NAME symbol,
1662 which indicates to the C program that the prctl() routine supports
1663 the PR_SET_NAME option.
1665 d_PRId64 (quadfio.U):
1666 This variable conditionally defines the PERL_PRId64 symbol, which
1667 indicates that stdio has a symbol to print 64-bit decimal numbers.
1669 d_PRIeldbl (longdblfio.U):
1670 This variable conditionally defines the PERL_PRIfldbl symbol, which
1671 indicates that stdio has a symbol to print long doubles.
1673 d_PRIEUldbl (longdblfio.U):
1674 This variable conditionally defines the PERL_PRIfldbl symbol, which
1675 indicates that stdio has a symbol to print long doubles.
1676 The 'U' in the name is to separate this from d_PRIeldbl so that even
1677 case-blind systems can see the difference.
1679 d_PRIfldbl (longdblfio.U):
1680 This variable conditionally defines the PERL_PRIfldbl symbol, which
1681 indicates that stdio has a symbol to print long doubles.
1683 d_PRIFUldbl (longdblfio.U):
1684 This variable conditionally defines the PERL_PRIfldbl symbol, which
1685 indicates that stdio has a symbol to print long doubles.
1686 The 'U' in the name is to separate this from d_PRIfldbl so that even
1687 case-blind systems can see the difference.
1689 d_PRIgldbl (longdblfio.U):
1690 This variable conditionally defines the PERL_PRIfldbl symbol, which
1691 indicates that stdio has a symbol to print long doubles.
1693 d_PRIGUldbl (longdblfio.U):
1694 This variable conditionally defines the PERL_PRIfldbl symbol, which
1695 indicates that stdio has a symbol to print long doubles.
1696 The 'U' in the name is to separate this from d_PRIgldbl so that even
1697 case-blind systems can see the difference.
1699 d_PRIi64 (quadfio.U):
1700 This variable conditionally defines the PERL_PRIi64 symbol, which
1701 indicates that stdio has a symbol to print 64-bit decimal numbers.
1703 d_printf_format_null (d_attribut.U):
1704 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
1705 indicates the C compiler allows printf-like formats to be null.
1707 d_PRIo64 (quadfio.U):
1708 This variable conditionally defines the PERL_PRIo64 symbol, which
1709 indicates that stdio has a symbol to print 64-bit octal numbers.
1711 d_PRIu64 (quadfio.U):
1712 This variable conditionally defines the PERL_PRIu64 symbol, which
1713 indicates that stdio has a symbol to print 64-bit unsigned decimal
1716 d_PRIx64 (quadfio.U):
1717 This variable conditionally defines the PERL_PRIx64 symbol, which
1718 indicates that stdio has a symbol to print 64-bit hexadecimal numbers.
1720 d_PRIXU64 (quadfio.U):
1721 This variable conditionally defines the PERL_PRIXU64 symbol, which
1722 indicates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1723 The 'U' in the name is to separate this from d_PRIx64 so that even
1724 case-blind systems can see the difference.
1726 d_procselfexe (d_procselfexe.U):
1727 Defined if $procselfexe is symlink to the absolute
1728 pathname of the executing program.
1730 d_pseudofork (d_vfork.U):
1731 This variable conditionally defines the HAS_PSEUDOFORK symbol,
1732 which indicates that an emulation of the fork routine is available.
1734 d_pthread_atfork (d_pthread_atfork.U):
1735 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1736 which indicates to the C program that the pthread_atfork()
1737 routine is available.
1739 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1740 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1741 pthread_attr_setscope() is available to set the contention scope
1742 attribute of a thread attribute object.
1744 d_pthread_yield (d_pthread_y.U):
1745 This variable conditionally defines the HAS_PTHREAD_YIELD
1746 symbol if the pthread_yield routine is available to yield
1747 the execution of the current thread.
1749 d_ptrdiff_t (unknown.U):
1750 This symbol will be defined if the C compiler supports ptrdiff_t.
1753 This variable conditionally defines PWAGE, which indicates
1754 that struct passwd contains pw_age.
1756 d_pwchange (i_pwd.U):
1757 This variable conditionally defines PWCHANGE, which indicates
1758 that struct passwd contains pw_change.
1760 d_pwclass (i_pwd.U):
1761 This variable conditionally defines PWCLASS, which indicates
1762 that struct passwd contains pw_class.
1764 d_pwcomment (i_pwd.U):
1765 This variable conditionally defines PWCOMMENT, which indicates
1766 that struct passwd contains pw_comment.
1768 d_pwexpire (i_pwd.U):
1769 This variable conditionally defines PWEXPIRE, which indicates
1770 that struct passwd contains pw_expire.
1772 d_pwgecos (i_pwd.U):
1773 This variable conditionally defines PWGECOS, which indicates
1774 that struct passwd contains pw_gecos.
1776 d_pwpasswd (i_pwd.U):
1777 This variable conditionally defines PWPASSWD, which indicates
1778 that struct passwd contains pw_passwd.
1780 d_pwquota (i_pwd.U):
1781 This variable conditionally defines PWQUOTA, which indicates
1782 that struct passwd contains pw_quota.
1784 d_qgcvt (d_qgcvt.U):
1785 This variable conditionally defines the HAS_QGCVT symbol, which
1786 indicates to the C program that the qgcvt() routine is available.
1788 d_quad (quadtype.U):
1789 This variable, if defined, tells that there's a 64-bit integer type,
1792 d_random_r (d_random_r.U):
1793 This variable conditionally defines the HAS_RANDOM_R symbol,
1794 which indicates to the C program that the random_r()
1795 routine is available.
1797 d_readdir (d_readdir.U):
1798 This variable conditionally defines HAS_READDIR if readdir() is
1799 available to read directory entries.
1801 d_readdir64_r (d_readdir64_r.U):
1802 This variable conditionally defines the HAS_READDIR64_R symbol,
1803 which indicates to the C program that the readdir64_r()
1804 routine is available.
1806 d_readdir_r (d_readdir_r.U):
1807 This variable conditionally defines the HAS_READDIR_R symbol,
1808 which indicates to the C program that the readdir_r()
1809 routine is available.
1811 d_readlink (d_readlink.U):
1812 This variable conditionally defines the HAS_READLINK symbol, which
1813 indicates to the C program that the readlink() routine is available
1814 to read the value of a symbolic link.
1816 d_readv (d_readv.U):
1817 This variable conditionally defines the HAS_READV symbol, which
1818 indicates to the C program that the readv() routine is available.
1820 d_recvmsg (d_recvmsg.U):
1821 This variable conditionally defines the HAS_RECVMSG symbol, which
1822 indicates to the C program that the recvmsg() routine is available.
1824 d_rename (d_rename.U):
1825 This variable conditionally defines the HAS_RENAME symbol, which
1826 indicates to the C program that the rename() routine is available
1829 d_rewinddir (d_readdir.U):
1830 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1833 d_rmdir (d_rmdir.U):
1834 This variable conditionally defines HAS_RMDIR if rmdir() is
1835 available to remove directories.
1837 d_safebcpy (d_safebcpy.U):
1838 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1839 the bcopy() routine can do overlapping copies. Normally, you
1840 should probably use memmove().
1842 d_safemcpy (d_safemcpy.U):
1843 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1844 the memcpy() routine can do overlapping copies.
1845 For overlapping copies, memmove() should be used, if available.
1847 d_sanemcmp (d_sanemcmp.U):
1848 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1849 the memcpy() routine is available and can be used to compare relative
1850 magnitudes of chars with their high bits set.
1852 d_sbrkproto (d_sbrkproto.U):
1853 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1854 which indicates to the C program that the system provides
1855 a prototype for the sbrk() function. Otherwise, it is
1856 up to the program to supply one.
1858 d_scalbnl (d_scalbnl.U):
1859 This variable conditionally defines the HAS_SCALBNL symbol, which
1860 indicates to the C program that the scalbnl() routine is available.
1861 If ilogbl is also present we can emulate frexpl.
1863 d_sched_yield (d_pthread_y.U):
1864 This variable conditionally defines the HAS_SCHED_YIELD
1865 symbol if the sched_yield routine is available to yield
1866 the execution of the current thread.
1868 d_scm_rights (d_socket.U):
1869 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1870 which indicates that the SCM_RIGHTS is available. #ifdef is
1871 not enough because it may be an enum, glibc has been known to do this.
1873 d_SCNfldbl (longdblfio.U):
1874 This variable conditionally defines the PERL_PRIfldbl symbol, which
1875 indicates that stdio has a symbol to scan long doubles.
1877 d_seekdir (d_readdir.U):
1878 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1881 d_select (d_select.U):
1882 This variable conditionally defines HAS_SELECT if select() is
1883 available to select active file descriptors. A <sys/time.h>
1884 inclusion may be necessary for the timeout field.
1887 This variable conditionally defines the HAS_SEM symbol, which
1888 indicates that the entire sem*(2) library is present.
1890 d_semctl (d_semctl.U):
1891 This variable conditionally defines the HAS_SEMCTL symbol, which
1892 indicates to the C program that the semctl() routine is available.
1894 d_semctl_semid_ds (d_union_semun.U):
1895 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1896 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1898 d_semctl_semun (d_union_semun.U):
1899 This variable conditionally defines USE_SEMCTL_SEMUN, which
1900 indicates that union semun is to be used for semctl IPC_STAT.
1902 d_semget (d_semget.U):
1903 This variable conditionally defines the HAS_SEMGET symbol, which
1904 indicates to the C program that the semget() routine is available.
1906 d_semop (d_semop.U):
1907 This variable conditionally defines the HAS_SEMOP symbol, which
1908 indicates to the C program that the semop() routine is available.
1910 d_sendmsg (d_sendmsg.U):
1911 This variable conditionally defines the HAS_SENDMSG symbol, which
1912 indicates to the C program that the sendmsg() routine is available.
1914 d_setegid (d_setegid.U):
1915 This variable conditionally defines the HAS_SETEGID symbol, which
1916 indicates to the C program that the setegid() routine is available
1917 to change the effective gid of the current program.
1919 d_seteuid (d_seteuid.U):
1920 This variable conditionally defines the HAS_SETEUID symbol, which
1921 indicates to the C program that the seteuid() routine is available
1922 to change the effective uid of the current program.
1924 d_setgrent (d_setgrent.U):
1925 This variable conditionally defines the HAS_SETGRENT symbol, which
1926 indicates to the C program that the setgrent() routine is available
1927 for initializing sequential access to the group database.
1929 d_setgrent_r (d_setgrent_r.U):
1930 This variable conditionally defines the HAS_SETGRENT_R symbol,
1931 which indicates to the C program that the setgrent_r()
1932 routine is available.
1934 d_setgrps (d_setgrps.U):
1935 This variable conditionally defines the HAS_SETGROUPS symbol, which
1936 indicates to the C program that the setgroups() routine is available
1937 to set the list of process groups.
1939 d_sethent (d_sethent.U):
1940 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1943 d_sethostent_r (d_sethostent_r.U):
1944 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1945 which indicates to the C program that the sethostent_r()
1946 routine is available.
1948 d_setitimer (d_setitimer.U):
1949 This variable conditionally defines the HAS_SETITIMER symbol, which
1950 indicates to the C program that the setitimer() routine is available.
1952 d_setlinebuf (d_setlnbuf.U):
1953 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1954 indicates to the C program that the setlinebuf() routine is available
1955 to change stderr or stdout from block-buffered or unbuffered to a
1958 d_setlocale (d_setlocale.U):
1959 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1960 available to handle locale-specific ctype implementations.
1962 d_setlocale_r (d_setlocale_r.U):
1963 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1964 which indicates to the C program that the setlocale_r()
1965 routine is available.
1967 d_setnent (d_setnent.U):
1968 This variable conditionally defines HAS_SETNETENT if setnetent() is
1971 d_setnetent_r (d_setnetent_r.U):
1972 This variable conditionally defines the HAS_SETNETENT_R symbol,
1973 which indicates to the C program that the setnetent_r()
1974 routine is available.
1976 d_setpent (d_setpent.U):
1977 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1980 d_setpgid (d_setpgid.U):
1981 This variable conditionally defines the HAS_SETPGID symbol if the
1982 setpgid(pid, gpid) function is available to set process group ID.
1984 d_setpgrp (d_setpgrp.U):
1985 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1986 available to set the current process group.
1988 d_setpgrp2 (d_setpgrp2.U):
1989 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1990 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1991 is available to set the current process group.
1993 d_setprior (d_setprior.U):
1994 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1995 is available to set a process's priority.
1997 d_setproctitle (d_setproctitle.U):
1998 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1999 which indicates to the C program that the setproctitle() routine
2002 d_setprotoent_r (d_setprotoent_r.U):
2003 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
2004 which indicates to the C program that the setprotoent_r()
2005 routine is available.
2007 d_setpwent (d_setpwent.U):
2008 This variable conditionally defines the HAS_SETPWENT symbol, which
2009 indicates to the C program that the setpwent() routine is available
2010 for initializing sequential access to the passwd database.
2012 d_setpwent_r (d_setpwent_r.U):
2013 This variable conditionally defines the HAS_SETPWENT_R symbol,
2014 which indicates to the C program that the setpwent_r()
2015 routine is available.
2017 d_setregid (d_setregid.U):
2018 This variable conditionally defines HAS_SETREGID if setregid() is
2019 available to change the real and effective gid of the current
2022 d_setresgid (d_setregid.U):
2023 This variable conditionally defines HAS_SETRESGID if setresgid() is
2024 available to change the real, effective and saved gid of the current
2027 d_setresuid (d_setreuid.U):
2028 This variable conditionally defines HAS_SETREUID if setresuid() is
2029 available to change the real, effective and saved uid of the current
2032 d_setreuid (d_setreuid.U):
2033 This variable conditionally defines HAS_SETREUID if setreuid() is
2034 available to change the real and effective uid of the current
2037 d_setrgid (d_setrgid.U):
2038 This variable conditionally defines the HAS_SETRGID symbol, which
2039 indicates to the C program that the setrgid() routine is available
2040 to change the real gid of the current program.
2042 d_setruid (d_setruid.U):
2043 This variable conditionally defines the HAS_SETRUID symbol, which
2044 indicates to the C program that the setruid() routine is available
2045 to change the real uid of the current program.
2047 d_setsent (d_setsent.U):
2048 This variable conditionally defines HAS_SETSERVENT if setservent() is
2051 d_setservent_r (d_setservent_r.U):
2052 This variable conditionally defines the HAS_SETSERVENT_R symbol,
2053 which indicates to the C program that the setservent_r()
2054 routine is available.
2056 d_setsid (d_setsid.U):
2057 This variable conditionally defines HAS_SETSID if setsid() is
2058 available to set the process group ID.
2060 d_setvbuf (d_setvbuf.U):
2061 This variable conditionally defines the HAS_SETVBUF symbol, which
2062 indicates to the C program that the setvbuf() routine is available
2063 to change buffering on an open stdio stream.
2066 This variable conditionally defines the HAS_SHM symbol, which
2067 indicates that the entire shm*(2) library is present.
2069 d_shmat (d_shmat.U):
2070 This variable conditionally defines the HAS_SHMAT symbol, which
2071 indicates to the C program that the shmat() routine is available.
2073 d_shmatprototype (d_shmat.U):
2074 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
2075 symbol, which indicates that sys/shm.h has a prototype for
2078 d_shmctl (d_shmctl.U):
2079 This variable conditionally defines the HAS_SHMCTL symbol, which
2080 indicates to the C program that the shmctl() routine is available.
2082 d_shmdt (d_shmdt.U):
2083 This variable conditionally defines the HAS_SHMDT symbol, which
2084 indicates to the C program that the shmdt() routine is available.
2086 d_shmget (d_shmget.U):
2087 This variable conditionally defines the HAS_SHMGET symbol, which
2088 indicates to the C program that the shmget() routine is available.
2090 d_sigaction (d_sigaction.U):
2091 This variable conditionally defines the HAS_SIGACTION symbol, which
2092 indicates that the Vr4 sigaction() routine is available.
2094 d_signbit (d_signbit.U):
2095 This variable conditionally defines the HAS_SIGNBIT symbol, which
2096 indicates to the C program that the signbit() routine is available
2097 and safe to use with perl's intern NV type.
2099 d_sigprocmask (d_sigprocmask.U):
2100 This variable conditionally defines HAS_SIGPROCMASK
2101 if sigprocmask() is available to examine or change the signal mask
2102 of the calling process.
2104 d_sigsetjmp (d_sigsetjmp.U):
2105 This variable conditionally defines the HAS_SIGSETJMP symbol,
2106 which indicates that the sigsetjmp() routine is available to
2107 call setjmp() and optionally save the process's signal mask.
2109 d_sin6_scope_id (d_socket.U):
2110 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol, which
2111 indicates that a struct sockaddr_in6 structure has the sin6_scope_id
2114 d_sitearch (sitearch.U):
2115 This variable conditionally defines SITEARCH to hold the pathname
2116 of architecture-dependent library files for $package. If
2117 $sitearch is the same as $archlib, then this is set to undef.
2119 d_snprintf (d_snprintf.U):
2120 This variable conditionally defines the HAS_SNPRINTF symbol, which
2121 indicates to the C program that the snprintf () library function
2124 d_sockaddr_in6 (d_socket.U):
2125 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol, which
2126 indicates the availability of a struct sockaddr_in6.
2128 d_sockaddr_sa_len (d_socket.U):
2129 This variable conditionally defines the HAS_SOCKADDR_SA_LEN symbol,
2130 which indicates that a struct sockaddr structure has the sa_len
2133 d_sockatmark (d_sockatmark.U):
2134 This variable conditionally defines the HAS_SOCKATMARK symbol, which
2135 indicates to the C program that the sockatmark() routine is available.
2137 d_sockatmarkproto (d_sockatmarkproto.U):
2138 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
2139 which indicates to the C program that the system provides
2140 a prototype for the sockatmark() function. Otherwise, it is
2141 up to the program to supply one.
2143 d_socket (d_socket.U):
2144 This variable conditionally defines HAS_SOCKET, which indicates
2145 that the BSD socket interface is supported.
2147 d_socklen_t (d_socklen_t.U):
2148 This symbol will be defined if the C compiler supports socklen_t.
2150 d_sockpair (d_socket.U):
2151 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
2152 indicates that the BSD socketpair() is supported.
2154 d_socks5_init (d_socks5_init.U):
2155 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
2156 indicates to the C program that the socks5_init() routine is available.
2158 d_sprintf_returns_strlen (d_sprintf_len.U):
2159 This variable defines whether sprintf returns the length of the string
2160 (as per the ANSI spec). Some C libraries retain compatibility with
2161 pre-ANSI C and return a pointer to the passed in buffer; for these
2162 this variable will be undef.
2164 d_sqrtl (d_sqrtl.U):
2165 This variable conditionally defines the HAS_SQRTL symbol, which
2166 indicates to the C program that the sqrtl() routine is available.
2168 d_srand48_r (d_srand48_r.U):
2169 This variable conditionally defines the HAS_SRAND48_R symbol,
2170 which indicates to the C program that the srand48_r()
2171 routine is available.
2173 d_srandom_r (d_srandom_r.U):
2174 This variable conditionally defines the HAS_SRANDOM_R symbol,
2175 which indicates to the C program that the srandom_r()
2176 routine is available.
2178 d_sresgproto (d_sresgproto.U):
2179 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
2180 which indicates to the C program that the system provides
2181 a prototype for the setresgid() function. Otherwise, it is
2182 up to the program to supply one.
2184 d_sresuproto (d_sresuproto.U):
2185 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2186 which indicates to the C program that the system provides
2187 a prototype for the setresuid() function. Otherwise, it is
2188 up to the program to supply one.
2190 d_statblks (d_statblks.U):
2191 This variable conditionally defines USE_STAT_BLOCKS
2192 if this system has a stat structure declaring
2193 st_blksize and st_blocks.
2195 d_statfs_f_flags (d_statfs_f_flags.U):
2196 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2197 symbol, which indicates to struct statfs from has f_flags member.
2198 This kind of struct statfs is coming from sys/mount.h (BSD),
2199 not from sys/statfs.h (SYSV).
2201 d_statfs_s (d_statfs_s.U):
2202 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2203 which indicates that the struct statfs is supported.
2205 d_static_inline (d_static_inline.U):
2206 This variable conditionally defines the HAS_STATIC_INLINE symbol,
2207 which indicates that the C compiler supports C99-style static
2208 inline. That is, the function can't be called from another
2211 d_statvfs (d_statvfs.U):
2212 This variable conditionally defines the HAS_STATVFS symbol, which
2213 indicates to the C program that the statvfs() routine is available.
2215 d_stdio_cnt_lval (d_stdstdio.U):
2216 This variable conditionally defines STDIO_CNT_LVALUE if the
2217 FILE_cnt macro can be used as an lvalue.
2219 d_stdio_ptr_lval (d_stdstdio.U):
2220 This variable conditionally defines STDIO_PTR_LVALUE if the
2221 FILE_ptr macro can be used as an lvalue.
2223 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2224 This symbol is defined if using the FILE_ptr macro as an lvalue
2225 to increase the pointer by n leaves File_cnt(fp) unchanged.
2227 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2228 This symbol is defined if using the FILE_ptr macro as an lvalue
2229 to increase the pointer by n has the side effect of decreasing the
2230 value of File_cnt(fp) by n.
2232 d_stdio_stream_array (stdio_streams.U):
2233 This variable tells whether there is an array holding
2236 d_stdiobase (d_stdstdio.U):
2237 This variable conditionally defines USE_STDIO_BASE if this system
2238 has a FILE structure declaring a usable _base field (or equivalent)
2241 d_stdstdio (d_stdstdio.U):
2242 This variable conditionally defines USE_STDIO_PTR if this system
2243 has a FILE structure declaring usable _ptr and _cnt fields (or
2244 equivalent) in stdio.h.
2246 d_strchr (d_strchr.U):
2247 This variable conditionally defines HAS_STRCHR if strchr() and
2248 strrchr() are available for string searching.
2250 d_strcoll (d_strcoll.U):
2251 This variable conditionally defines HAS_STRCOLL if strcoll() is
2252 available to compare strings using collating information.
2254 d_strctcpy (d_strctcpy.U):
2255 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2256 indicates to the C program that this C compiler knows how to copy
2259 d_strerrm (d_strerror.U):
2260 This variable holds what Strerror is defined as to translate an error
2261 code condition into an error message string. It could be 'strerror'
2262 or a more complex macro emulating strerror with sys_errlist[], or the
2263 "unknown" string when both strerror and sys_errlist are missing.
2265 d_strerror (d_strerror.U):
2266 This variable conditionally defines HAS_STRERROR if strerror() is
2267 available to translate error numbers to strings.
2269 d_strerror_r (d_strerror_r.U):
2270 This variable conditionally defines the HAS_STRERROR_R symbol,
2271 which indicates to the C program that the strerror_r()
2272 routine is available.
2274 d_strftime (d_strftime.U):
2275 This variable conditionally defines the HAS_STRFTIME symbol, which
2276 indicates to the C program that the strftime() routine is available.
2278 d_strlcat (d_strlcat.U):
2279 This variable conditionally defines the HAS_STRLCAT symbol, which
2280 indicates to the C program that the strlcat () routine is available.
2282 d_strlcpy (d_strlcpy.U):
2283 This variable conditionally defines the HAS_STRLCPY symbol, which
2284 indicates to the C program that the strlcpy () routine is available.
2286 d_strtod (d_strtod.U):
2287 This variable conditionally defines the HAS_STRTOD symbol, which
2288 indicates to the C program that the strtod() routine is available
2289 to provide better numeric string conversion than atof().
2291 d_strtol (d_strtol.U):
2292 This variable conditionally defines the HAS_STRTOL symbol, which
2293 indicates to the C program that the strtol() routine is available
2294 to provide better numeric string conversion than atoi() and friends.
2296 d_strtold (d_strtold.U):
2297 This variable conditionally defines the HAS_STRTOLD symbol, which
2298 indicates to the C program that the strtold() routine is available.
2300 d_strtoll (d_strtoll.U):
2301 This variable conditionally defines the HAS_STRTOLL symbol, which
2302 indicates to the C program that the strtoll() routine is available.
2304 d_strtoq (d_strtoq.U):
2305 This variable conditionally defines the HAS_STRTOQ symbol, which
2306 indicates to the C program that the strtoq() routine is available.
2308 d_strtoul (d_strtoul.U):
2309 This variable conditionally defines the HAS_STRTOUL symbol, which
2310 indicates to the C program that the strtoul() routine is available
2311 to provide conversion of strings to unsigned long.
2313 d_strtoull (d_strtoull.U):
2314 This variable conditionally defines the HAS_STRTOULL symbol, which
2315 indicates to the C program that the strtoull() routine is available.
2317 d_strtouq (d_strtouq.U):
2318 This variable conditionally defines the HAS_STRTOUQ symbol, which
2319 indicates to the C program that the strtouq() routine is available.
2321 d_strxfrm (d_strxfrm.U):
2322 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2323 available to transform strings.
2325 d_suidsafe (d_dosuid.U):
2326 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2327 if setuid scripts can be secure. This test looks in /dev/fd/.
2329 d_symlink (d_symlink.U):
2330 This variable conditionally defines the HAS_SYMLINK symbol, which
2331 indicates to the C program that the symlink() routine is available
2332 to create symbolic links.
2334 d_syscall (d_syscall.U):
2335 This variable conditionally defines HAS_SYSCALL if syscall() is
2336 available call arbitrary system calls.
2338 d_syscallproto (d_syscallproto.U):
2339 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2340 which indicates to the C program that the system provides
2341 a prototype for the syscall() function. Otherwise, it is
2342 up to the program to supply one.
2344 d_sysconf (d_sysconf.U):
2345 This variable conditionally defines the HAS_SYSCONF symbol, which
2346 indicates to the C program that the sysconf() routine is available
2347 to determine system related limits and options.
2349 d_sysernlst (d_strerror.U):
2350 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2351 is available to translate error numbers to the symbolic name.
2353 d_syserrlst (d_strerror.U):
2354 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2355 available to translate error numbers to strings.
2357 d_system (d_system.U):
2358 This variable conditionally defines HAS_SYSTEM if system() is
2359 available to issue a shell command.
2361 d_tcgetpgrp (d_tcgtpgrp.U):
2362 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2363 indicates to the C program that the tcgetpgrp() routine is available.
2364 to get foreground process group ID.
2366 d_tcsetpgrp (d_tcstpgrp.U):
2367 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2368 indicates to the C program that the tcsetpgrp() routine is available
2369 to set foreground process group ID.
2371 d_telldir (d_readdir.U):
2372 This variable conditionally defines HAS_TELLDIR if telldir() is
2375 d_telldirproto (d_telldirproto.U):
2376 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2377 which indicates to the C program that the system provides
2378 a prototype for the telldir() function. Otherwise, it is
2379 up to the program to supply one.
2382 This variable conditionally defines the HAS_TIME symbol, which indicates
2383 that the time() routine exists. The time() routine is normally
2384 provided on UNIX systems.
2386 d_timegm (d_timegm.U):
2387 This variable conditionally defines the HAS_TIMEGM symbol, which
2388 indicates to the C program that the timegm () routine is available.
2390 d_times (d_times.U):
2391 This variable conditionally defines the HAS_TIMES symbol, which indicates
2392 that the times() routine exists. The times() routine is normally
2393 provided on UNIX systems. You may have to include <sys/times.h>.
2395 d_tm_tm_gmtoff (i_time.U):
2396 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2397 indicates to the C program that the struct tm has the tm_gmtoff field.
2399 d_tm_tm_zone (i_time.U):
2400 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2401 indicates to the C program that the struct tm has the tm_zone field.
2403 d_tmpnam_r (d_tmpnam_r.U):
2404 This variable conditionally defines the HAS_TMPNAM_R symbol,
2405 which indicates to the C program that the tmpnam_r()
2406 routine is available.
2408 d_truncate (d_truncate.U):
2409 This variable conditionally defines HAS_TRUNCATE if truncate() is
2410 available to truncate files.
2412 d_ttyname_r (d_ttyname_r.U):
2413 This variable conditionally defines the HAS_TTYNAME_R symbol,
2414 which indicates to the C program that the ttyname_r()
2415 routine is available.
2417 d_tzname (d_tzname.U):
2418 This variable conditionally defines HAS_TZNAME if tzname[] is
2419 available to access timezone names.
2421 d_u32align (d_u32align.U):
2422 This variable tells whether you must access character data
2423 through U32-aligned pointers.
2425 d_ualarm (d_ualarm.U):
2426 This variable conditionally defines the HAS_UALARM symbol, which
2427 indicates to the C program that the ualarm() routine is available.
2429 d_umask (d_umask.U):
2430 This variable conditionally defines the HAS_UMASK symbol, which
2431 indicates to the C program that the umask() routine is available.
2432 to set and get the value of the file creation mask.
2434 d_uname (d_gethname.U):
2435 This variable conditionally defines the HAS_UNAME symbol, which
2436 indicates to the C program that the uname() routine may be
2437 used to derive the host name.
2439 d_union_semun (d_union_semun.U):
2440 This variable conditionally defines HAS_UNION_SEMUN if the
2441 union semun is defined by including <sys/sem.h>.
2443 d_unordered (d_unordered.U):
2444 This variable conditionally defines the HAS_UNORDERED symbol, which
2445 indicates to the C program that the unordered() routine is available.
2447 d_unsetenv (d_unsetenv.U):
2448 This variable conditionally defines the HAS_UNSETENV symbol, which
2449 indicates to the C program that the unsetenv () routine is available.
2451 d_usleep (d_usleep.U):
2452 This variable conditionally defines HAS_USLEEP if usleep() is
2453 available to do high granularity sleeps.
2455 d_usleepproto (d_usleepproto.U):
2456 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2457 which indicates to the C program that the system provides
2458 a prototype for the usleep() function. Otherwise, it is
2459 up to the program to supply one.
2461 d_ustat (d_ustat.U):
2462 This variable conditionally defines HAS_USTAT if ustat() is
2463 available to query file system statistics by dev_t.
2465 d_vendorarch (vendorarch.U):
2466 This variable conditionally defined PERL_VENDORARCH.
2468 d_vendorbin (vendorbin.U):
2469 This variable conditionally defines PERL_VENDORBIN.
2471 d_vendorlib (vendorlib.U):
2472 This variable conditionally defines PERL_VENDORLIB.
2474 d_vendorscript (vendorscript.U):
2475 This variable conditionally defines PERL_VENDORSCRIPT.
2477 d_vfork (d_vfork.U):
2478 This variable conditionally defines the HAS_VFORK symbol, which
2479 indicates the vfork() routine is available.
2481 d_void_closedir (d_closedir.U):
2482 This variable conditionally defines VOID_CLOSEDIR if closedir()
2483 does not return a value.
2485 d_voidsig (d_voidsig.U):
2486 This variable conditionally defines VOIDSIG if this system
2487 declares "void (*signal(...))()" in signal.h. The old way was to
2488 declare it as "int (*signal(...))()".
2490 d_voidtty (i_sysioctl.U):
2491 This variable conditionally defines USE_IOCNOTTY to indicate that the
2492 ioctl() call with TIOCNOTTY should be used to void tty association.
2493 Otherwise (on USG probably), it is enough to close the standard file
2494 descriptors and do a setpgrp().
2496 d_volatile (d_volatile.U):
2497 This variable conditionally defines the HASVOLATILE symbol, which
2498 indicates to the C program that this C compiler knows about the
2499 volatile declaration.
2501 d_vprintf (d_vprintf.U):
2502 This variable conditionally defines the HAS_VPRINTF symbol, which
2503 indicates to the C program that the vprintf() routine is available
2504 to printf with a pointer to an argument list.
2506 d_vsnprintf (d_snprintf.U):
2507 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2508 indicates to the C program that the vsnprintf () library function
2511 d_wait4 (d_wait4.U):
2512 This variable conditionally defines the HAS_WAIT4 symbol, which
2513 indicates the wait4() routine is available.
2515 d_waitpid (d_waitpid.U):
2516 This variable conditionally defines HAS_WAITPID if waitpid() is
2517 available to wait for child process.
2519 d_wcscmp (d_wcscmp.U):
2520 This variable conditionally defines the HAS_WCSCMP symbol if the
2521 wcscmp() routine is available and can be used to compare wide
2524 d_wcstombs (d_wcstombs.U):
2525 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2526 indicates to the C program that the wcstombs() routine is available
2527 to convert wide character strings to multibyte strings.
2529 d_wcsxfrm (d_wcsxfrm.U):
2530 This variable conditionally defines the HAS_WCSXFRM symbol if the
2531 wcsxfrm() routine is available and can be used to compare wide
2534 d_wctomb (d_wctomb.U):
2535 This variable conditionally defines the HAS_WCTOMB symbol, which
2536 indicates to the C program that the wctomb() routine is available
2537 to convert a wide character to a multibyte.
2539 d_writev (d_writev.U):
2540 This variable conditionally defines the HAS_WRITEV symbol, which
2541 indicates to the C program that the writev() routine is available.
2544 This variable conditionally defines the symbol XENIX, which alerts
2545 the C program that it runs under Xenix.
2548 This variable is used internally by Configure to determine the
2549 full pathname (if any) of the date program. After Configure runs,
2550 the value is reset to a plain "date" and is not useful.
2552 db_hashtype (i_db.U):
2553 This variable contains the type of the hash structure element
2554 in the <db.h> header file. In older versions of DB, it was
2555 int, while in newer ones it is u_int32_t.
2557 db_prefixtype (i_db.U):
2558 This variable contains the type of the prefix structure element
2559 in the <db.h> header file. In older versions of DB, it was
2560 int, while in newer ones it is size_t.
2562 db_version_major (i_db.U):
2563 This variable contains the major version number of
2564 Berkeley DB found in the <db.h> header file.
2566 db_version_minor (i_db.U):
2567 This variable contains the minor version number of
2568 Berkeley DB found in the <db.h> header file.
2569 For DB version 1 this is always 0.
2571 db_version_patch (i_db.U):
2572 This variable contains the patch version number of
2573 Berkeley DB found in the <db.h> header file.
2574 For DB version 1 this is always 0.
2576 direntrytype (i_dirent.U):
2577 This symbol is set to 'struct direct' or 'struct dirent' depending on
2578 whether dirent is available or not. You should use this pseudo type to
2579 portably declare your directory entries.
2582 This variable contains the extension that is to be used for the
2583 dynamically loaded modules that perl generates.
2586 This variable contains the name of the dynamic loading file that
2587 will be used with the package.
2589 doublesize (doublesize.U):
2590 This variable contains the value of the DOUBLESIZE symbol, which
2591 indicates to the C program how many bytes there are in a double.
2593 drand01 (randfunc.U):
2594 Indicates the macro to be used to generate normalized
2595 random numbers. Uses randfunc, often divided by
2596 (double) (((unsigned long) 1 << randbits)) in order to
2597 normalize the result.
2598 In C programs, the macro 'Drand01' is mapped to drand01.
2600 drand48_r_proto (d_drand48_r.U):
2601 This variable encodes the prototype of drand48_r.
2602 It is zero if d_drand48_r is undef, and one of the
2603 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2606 dtrace (usedtrace.U):
2607 This variable holds the location of the dtrace executable.
2609 dynamic_ext (Extensions.U):
2610 This variable holds a list of XS extension files we want to
2611 link dynamically into the package. It is used by Makefile.
2613 eagain (nblock_io.U):
2614 This variable bears the symbolic errno code set by read() when no
2615 data is present on the file and non-blocking I/O was enabled (otherwise,
2616 read() blocks naturally).
2619 This variable conditionally defines EBCDIC if this
2620 system uses EBCDIC encoding.
2623 This variable is used internally by Configure to determine the
2624 full pathname (if any) of the echo program. After Configure runs,
2625 the value is reset to a plain "echo" and is not useful.
2628 This variable is used internally by Configure to determine the
2629 full pathname (if any) of the egrep program. After Configure runs,
2630 the value is reset to a plain "egrep" and is not useful.
2633 This variable is defined but not used by Configure.
2634 The value is the empty string and is not useful.
2636 endgrent_r_proto (d_endgrent_r.U):
2637 This variable encodes the prototype of endgrent_r.
2638 It is zero if d_endgrent_r is undef, and one of the
2639 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2642 endhostent_r_proto (d_endhostent_r.U):
2643 This variable encodes the prototype of endhostent_r.
2644 It is zero if d_endhostent_r is undef, and one of the
2645 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2648 endnetent_r_proto (d_endnetent_r.U):
2649 This variable encodes the prototype of endnetent_r.
2650 It is zero if d_endnetent_r is undef, and one of the
2651 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2654 endprotoent_r_proto (d_endprotoent_r.U):
2655 This variable encodes the prototype of endprotoent_r.
2656 It is zero if d_endprotoent_r is undef, and one of the
2657 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2660 endpwent_r_proto (d_endpwent_r.U):
2661 This variable encodes the prototype of endpwent_r.
2662 It is zero if d_endpwent_r is undef, and one of the
2663 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2666 endservent_r_proto (d_endservent_r.U):
2667 This variable encodes the prototype of endservent_r.
2668 It is zero if d_endservent_r is undef, and one of the
2669 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2673 When running under Eunice this variable contains a command which will
2674 convert a shell script to the proper form of text file for it to be
2675 executable by the shell. On other systems it is a no-op.
2678 This is an old synonym for _exe.
2681 This variable is used internally by Configure to determine the
2682 full pathname (if any) of the expr program. After Configure runs,
2683 the value is reset to a plain "expr" and is not useful.
2685 extensions (Extensions.U):
2686 This variable holds a list of all extension files (both XS and
2687 non-xs) installed with the package. It is propagated to Config.pm
2688 and is typically used to test whether a particular extension
2692 ANSI C requires 'extern' where C++ requires 'extern "C"'. This
2693 variable can be used in Configure to do the right thing.
2696 This variable holds a list of extra modules to install.
2698 fflushall (fflushall.U):
2699 This symbol, if defined, tells that to flush
2700 all pending stdio output one must loop through all
2701 the stdio file handles stored in an array and fflush them.
2702 Note that if fflushNULL is defined, fflushall will not
2703 even be probed for and will be left undefined.
2705 fflushNULL (fflushall.U):
2706 This symbol, if defined, tells that fflush(NULL) correctly
2707 flushes all pending stdio output without side effects. In
2708 particular, on some platforms calling fflush(NULL) *still*
2709 corrupts STDIN if it is a pipe.
2712 This variable is defined but not used by Configure.
2713 The value is the empty string and is not useful.
2715 firstmakefile (Unix.U):
2716 This variable defines the first file searched by make. On unix,
2717 it is makefile (then Makefile). On case-insensitive systems,
2718 it might be something else. This is only used to deal with
2719 convoluted make depend tricks.
2722 This variable is defined but not used by Configure.
2723 The value is the empty string and is not useful.
2725 fpossize (fpossize.U):
2726 This variable contains the size of a fpostype in bytes.
2728 fpostype (fpostype.U):
2729 This variable defines Fpos_t to be something like fpos_t, long,
2730 uint, or whatever type is used to declare file positions in libc.
2732 freetype (mallocsrc.U):
2733 This variable contains the return type of free(). It is usually
2734 void, but occasionally int.
2737 This variable contains the command used by Configure
2738 to copy files from the target host. Useful and available
2739 only during Perl build.
2740 The string ':' if not cross-compiling.
2743 This variable contains the full pathname to 'ar', whether or
2744 not the user has specified 'portability'. This is only used
2748 This variable contains the full pathname to 'csh', whether or
2749 not the user has specified 'portability'. This is only used
2750 in the compiled C program, and we assume that all systems which
2751 can share this executable will have the same full pathname to
2754 full_sed (Loc_sed.U):
2755 This variable contains the full pathname to 'sed', whether or
2756 not the user has specified 'portability'. This is only used
2757 in the compiled C program, and we assume that all systems which
2758 can share this executable will have the same full pathname to
2761 gccansipedantic (gccvers.U):
2762 If GNU cc (gcc) is used, this variable will enable (if set) the
2763 -ansi and -pedantic ccflags for building core files (through
2764 cflags script). (See Porting/pumpkin.pod for full description).
2766 gccosandvers (gccvers.U):
2767 If GNU cc (gcc) is used, this variable holds the operating system
2768 and version used to compile gcc. It is set to '' if not gcc,
2769 or if nothing useful can be parsed as the os version.
2771 gccversion (gccvers.U):
2772 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2773 indicate whether the compiler is version 1 or 2. This is used in
2774 setting some of the default cflags. It is set to '' if not gcc.
2776 getgrent_r_proto (d_getgrent_r.U):
2777 This variable encodes the prototype of getgrent_r.
2778 It is zero if d_getgrent_r is undef, and one of the
2779 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2782 getgrgid_r_proto (d_getgrgid_r.U):
2783 This variable encodes the prototype of getgrgid_r.
2784 It is zero if d_getgrgid_r is undef, and one of the
2785 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2788 getgrnam_r_proto (d_getgrnam_r.U):
2789 This variable encodes the prototype of getgrnam_r.
2790 It is zero if d_getgrnam_r is undef, and one of the
2791 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2794 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2795 This variable encodes the prototype of gethostbyaddr_r.
2796 It is zero if d_gethostbyaddr_r is undef, and one of the
2797 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2800 gethostbyname_r_proto (d_gethostbyname_r.U):
2801 This variable encodes the prototype of gethostbyname_r.
2802 It is zero if d_gethostbyname_r is undef, and one of the
2803 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2806 gethostent_r_proto (d_gethostent_r.U):
2807 This variable encodes the prototype of gethostent_r.
2808 It is zero if d_gethostent_r is undef, and one of the
2809 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2812 getlogin_r_proto (d_getlogin_r.U):
2813 This variable encodes the prototype of getlogin_r.
2814 It is zero if d_getlogin_r is undef, and one of the
2815 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2818 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2819 This variable encodes the prototype of getnetbyaddr_r.
2820 It is zero if d_getnetbyaddr_r is undef, and one of the
2821 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2824 getnetbyname_r_proto (d_getnetbyname_r.U):
2825 This variable encodes the prototype of getnetbyname_r.
2826 It is zero if d_getnetbyname_r is undef, and one of the
2827 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2830 getnetent_r_proto (d_getnetent_r.U):
2831 This variable encodes the prototype of getnetent_r.
2832 It is zero if d_getnetent_r is undef, and one of the
2833 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2836 getprotobyname_r_proto (d_getprotobyname_r.U):
2837 This variable encodes the prototype of getprotobyname_r.
2838 It is zero if d_getprotobyname_r is undef, and one of the
2839 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2842 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2843 This variable encodes the prototype of getprotobynumber_r.
2844 It is zero if d_getprotobynumber_r is undef, and one of the
2845 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2848 getprotoent_r_proto (d_getprotoent_r.U):
2849 This variable encodes the prototype of getprotoent_r.
2850 It is zero if d_getprotoent_r is undef, and one of the
2851 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2854 getpwent_r_proto (d_getpwent_r.U):
2855 This variable encodes the prototype of getpwent_r.
2856 It is zero if d_getpwent_r is undef, and one of the
2857 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2860 getpwnam_r_proto (d_getpwnam_r.U):
2861 This variable encodes the prototype of getpwnam_r.
2862 It is zero if d_getpwnam_r is undef, and one of the
2863 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2866 getpwuid_r_proto (d_getpwuid_r.U):
2867 This variable encodes the prototype of getpwuid_r.
2868 It is zero if d_getpwuid_r is undef, and one of the
2869 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2872 getservbyname_r_proto (d_getservbyname_r.U):
2873 This variable encodes the prototype of getservbyname_r.
2874 It is zero if d_getservbyname_r is undef, and one of the
2875 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2878 getservbyport_r_proto (d_getservbyport_r.U):
2879 This variable encodes the prototype of getservbyport_r.
2880 It is zero if d_getservbyport_r is undef, and one of the
2881 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2884 getservent_r_proto (d_getservent_r.U):
2885 This variable encodes the prototype of getservent_r.
2886 It is zero if d_getservent_r is undef, and one of the
2887 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2890 getspnam_r_proto (d_getspnam_r.U):
2891 This variable encodes the prototype of getspnam_r.
2892 It is zero if d_getspnam_r is undef, and one of the
2893 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2897 This variable contains the format string used for printing a Gid_t.
2899 gidsign (gidsign.U):
2900 This variable contains the signedness of a gidtype.
2901 1 for unsigned, -1 for signed.
2903 gidsize (gidsize.U):
2904 This variable contains the size of a gidtype in bytes.
2906 gidtype (gidtype.U):
2907 This variable defines Gid_t to be something like gid_t, int,
2908 ushort, or whatever type is used to declare the return type
2909 of getgid(). Typically, it is the type of group ids in the kernel.
2912 This variable holds the general path (space-separated) used to
2913 find libraries. It may contain directories that do not exist on
2914 this platform, libpth is the cleaned-up version.
2917 This variable is used internally by Configure to determine the
2918 full pathname (if any) of the gmake program. After Configure runs,
2919 the value is reset to a plain "gmake" and is not useful.
2921 gmtime_r_proto (d_gmtime_r.U):
2922 This variable encodes the prototype of gmtime_r.
2923 It is zero if d_gmtime_r is undef, and one of the
2924 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2927 gnulibc_version (d_gnulibc.U):
2928 This variable contains the version number of the GNU C library.
2929 It is usually something like '2.2.5'. It is a plain '' if this
2930 is not the GNU C library, or if the version is unknown.
2933 This variable is used internally by Configure to determine the
2934 full pathname (if any) of the grep program. After Configure runs,
2935 the value is reset to a plain "grep" and is not useful.
2938 This variable contains a command that produces the text of the
2939 /etc/group file. This is normally "cat /etc/group", but can be
2940 "ypcat group" when NIS is used.
2941 On some systems, such as os390, there may be no equivalent
2942 command, in which case this variable is unset.
2944 groupstype (groupstype.U):
2945 This variable defines Groups_t to be something like gid_t, int,
2946 ushort, or whatever type is used for the second argument to
2947 getgroups() and setgroups(). Usually, this is the same as
2948 gidtype (gid_t), but sometimes it isn't.
2951 This variable is used internally by Configure to determine the
2952 full pathname (if any) of the gzip program. After Configure runs,
2953 the value is reset to a plain "gzip" and is not useful.
2955 h_fcntl (h_fcntl.U):
2956 This is variable gets set in various places to tell i_fcntl that
2957 <fcntl.h> should be included.
2959 h_sysfile (h_sysfile.U):
2960 This is variable gets set in various places to tell i_sys_file that
2961 <sys/file.h> should be included.
2964 Gives the type of hints used for previous answers. May be one of
2965 "default", "recommended" or "previous".
2968 This variable contains a command that produces the text of the
2969 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2970 "ypcat hosts" when NIS is used.
2971 On some systems, such as os390, there may be no equivalent
2972 command, in which case this variable is unset.
2974 hostgenerate (Cross.U):
2975 This variable contains the path to a generate_uudmap binary that
2976 can be run on the host OS when cross-compiling. Useful and
2977 available only during Perl build.
2978 Empty string '' if not cross-compiling.
2980 hostosname (Cross.U):
2981 This variable contains the original value of '$^O' for hostperl
2982 when cross-compiling. This is useful to pick the proper tools
2983 when running build code in the host.
2984 Empty string '' if not cross-compiling.
2987 This variable contains the path to a miniperl binary that can be
2988 run on the host OS when cross-compiling. Useful and available only
2990 Empty string '' if not cross-compiling.
2992 html1dir (html1dir.U):
2993 This variable contains the name of the directory in which html
2994 source pages are to be put. This directory is for pages
2995 that describe whole programs, not libraries or modules. It
2996 is intended to correspond roughly to section 1 of the Unix
2999 html1direxp (html1dir.U):
3000 This variable is the same as the html1dir variable, but is filename
3001 expanded at configuration time, for convenient use in makefiles.
3003 html3dir (html3dir.U):
3004 This variable contains the name of the directory in which html
3005 source pages are to be put. This directory is for pages
3006 that describe libraries or modules. It is intended to
3007 correspond roughly to section 3 of the Unix manuals.
3009 html3direxp (html3dir.U):
3010 This variable is the same as the html3dir variable, but is filename
3011 expanded at configuration time, for convenient use in makefiles.
3014 This variable is the size of an I16 in bytes.
3017 This variable contains the C type used for Perl's I16.
3020 This variable is the size of an I32 in bytes.
3023 This variable contains the C type used for Perl's I32.
3026 This variable is the size of an I64 in bytes.
3029 This variable contains the C type used for Perl's I64.
3032 This variable is the size of an I8 in bytes.
3035 This variable contains the C type used for Perl's I8.
3037 i_arpainet (i_arpainet.U):
3038 This variable conditionally defines the I_ARPA_INET symbol,
3039 and indicates whether a C program should include <arpa/inet.h>.
3041 i_assert (i_assert.U):
3042 This variable conditionally defines the I_ASSERT symbol, which
3043 indicates to the C program that <assert.h> exists and could be
3047 This variable conditionally defines the I_BFD symbol, and
3048 indicates whether a C program can include <bfd.h>.
3050 i_bsdioctl (i_sysioctl.U):
3051 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
3052 indicates to the C program that <sys/bsdioctl.h> exists and should
3055 i_crypt (i_crypt.U):
3056 This variable conditionally defines the I_CRYPT symbol, and indicates
3057 whether a C program should include <crypt.h>.
3060 This variable conditionally defines the I_DB symbol, and indicates
3061 whether a C program may include Berkeley's DB include file <db.h>.
3064 This variable conditionally defines the I_DBM symbol, which
3065 indicates to the C program that <dbm.h> exists and should
3068 i_dirent (i_dirent.U):
3069 This variable conditionally defines I_DIRENT, which indicates
3070 to the C program that it should include <dirent.h>.
3072 i_dlfcn (i_dlfcn.U):
3073 This variable conditionally defines the I_DLFCN symbol, which
3074 indicates to the C program that <dlfcn.h> exists and should
3077 i_execinfo (i_execinfo.U):
3078 This variable conditionally defines the I_EXECINFO symbol, and indicates
3079 whether a C program may include <execinfo.h>, for backtrace() support.
3081 i_fcntl (i_fcntl.U):
3082 This variable controls the value of I_FCNTL (which tells
3083 the C program to include <fcntl.h>).
3085 i_float (i_float.U):
3086 This variable conditionally defines the I_FLOAT symbol, and indicates
3087 whether a C program may include <float.h> to get symbols like DBL_MAX
3088 or DBL_MIN, i.e. machine dependent floating point values.
3091 This variable conditionally defines the I_FP symbol, and indicates
3092 whether a C program should include <fp.h>.
3094 i_fp_class (i_fp_class.U):
3095 This variable conditionally defines the I_FP_CLASS symbol, and indicates
3096 whether a C program should include <fp_class.h>.
3099 This variable conditionally defines the I_GDBM symbol, which
3100 indicates to the C program that <gdbm.h> exists and should
3103 i_gdbm_ndbm (i_ndbm.U):
3104 This variable conditionally defines the I_GDBM_NDBM symbol, which
3105 indicates to the C program that <gdbm-ndbm.h> exists and should
3106 be included. This is the location of the ndbm.h compatibility file
3109 i_gdbmndbm (i_ndbm.U):
3110 This variable conditionally defines the I_GDBMNDBM symbol, which
3111 indicates to the C program that <gdbm/ndbm.h> exists and should
3112 be included. This was the location of the ndbm.h compatibility file
3116 This variable conditionally defines the I_GRP symbol, and indicates
3117 whether a C program should include <grp.h>.
3119 i_ieeefp (i_ieeefp.U):
3120 This variable conditionally defines the I_IEEEFP symbol, and indicates
3121 whether a C program should include <ieeefp.h>.
3123 i_inttypes (i_inttypes.U):
3124 This variable conditionally defines the I_INTTYPES symbol,
3125 and indicates whether a C program should include <inttypes.h>.
3127 i_langinfo (i_langinfo.U):
3128 This variable conditionally defines the I_LANGINFO symbol,
3129 and indicates whether a C program should include <langinfo.h>.
3131 i_libutil (i_libutil.U):
3132 This variable conditionally defines the I_LIBUTIL symbol, and indicates
3133 whether a C program should include <libutil.h>.
3135 i_limits (i_limits.U):
3136 This variable conditionally defines the I_LIMITS symbol, and indicates
3137 whether a C program may include <limits.h> to get symbols like WORD_BIT
3140 i_locale (i_locale.U):
3141 This variable conditionally defines the I_LOCALE symbol,
3142 and indicates whether a C program should include <locale.h>.
3144 i_machcthr (i_machcthr.U):
3145 This variable conditionally defines the I_MACH_CTHREADS symbol,
3146 and indicates whether a C program should include <mach/cthreads.h>.
3148 i_malloc (i_malloc.U):
3149 This variable conditionally defines the I_MALLOC symbol, and indicates
3150 whether a C program should include <malloc.h>.
3152 i_mallocmalloc (i_mallocmalloc.U):
3153 This variable conditionally defines the I_MALLOCMALLOC symbol,
3154 and indicates whether a C program should include <malloc/malloc.h>.
3157 This variable conditionally defines the I_MATH symbol, and indicates
3158 whether a C program may include <math.h>.
3160 i_memory (i_memory.U):
3161 This variable conditionally defines the I_MEMORY symbol, and indicates
3162 whether a C program should include <memory.h>.
3164 i_mntent (i_mntent.U):
3165 This variable conditionally defines the I_MNTENT symbol, and indicates
3166 whether a C program should include <mntent.h>.
3169 This variable conditionally defines the I_NDBM symbol, which
3170 indicates to the C program that <ndbm.h> exists and should
3173 i_netdb (i_netdb.U):
3174 This variable conditionally defines the I_NETDB symbol, and indicates
3175 whether a C program should include <netdb.h>.
3177 i_neterrno (i_neterrno.U):
3178 This variable conditionally defines the I_NET_ERRNO symbol, which
3179 indicates to the C program that <net/errno.h> exists and should
3182 i_netinettcp (i_netinettcp.U):
3183 This variable conditionally defines the I_NETINET_TCP symbol,
3184 and indicates whether a C program should include <netinet/tcp.h>.
3187 This variable conditionally defines I_NETINET_IN, which indicates
3188 to the C program that it should include <netinet/in.h>. Otherwise,
3189 you may try <sys/in.h>.
3192 This variable conditionally defines the I_POLL symbol, and indicates
3193 whether a C program should include <poll.h>.
3196 This variable conditionally defines the I_PROT symbol, and indicates
3197 whether a C program should include <prot.h>.
3199 i_pthread (i_pthread.U):
3200 This variable conditionally defines the I_PTHREAD symbol,
3201 and indicates whether a C program should include <pthread.h>.
3204 This variable conditionally defines I_PWD, which indicates
3205 to the C program that it should include <pwd.h>.
3207 i_rpcsvcdbm (i_dbm.U):
3208 This variable conditionally defines the I_RPCSVC_DBM symbol, which
3209 indicates to the C program that <rpcsvc/dbm.h> exists and should
3210 be included. Some System V systems might need this instead of <dbm.h>.
3212 i_sgtty (i_termio.U):
3213 This variable conditionally defines the I_SGTTY symbol, which
3214 indicates to the C program that it should include <sgtty.h> rather
3217 i_shadow (i_shadow.U):
3218 This variable conditionally defines the I_SHADOW symbol, and indicates
3219 whether a C program should include <shadow.h>.
3221 i_socks (i_socks.U):
3222 This variable conditionally defines the I_SOCKS symbol, and indicates
3223 whether a C program should include <socks.h>.
3225 i_stdarg (i_varhdr.U):
3226 This variable conditionally defines the I_STDARG symbol, which
3227 indicates to the C program that <stdarg.h> exists and should
3230 i_stdbool (i_stdbool.U):
3231 This variable conditionally defines the I_STDBOOL symbol, which
3232 indicates to the C program that <stdbool.h> exists and should
3235 i_stddef (i_stddef.U):
3236 This variable conditionally defines the I_STDDEF symbol, which
3237 indicates to the C program that <stddef.h> exists and should
3240 i_stdlib (i_stdlib.U):
3241 This variable conditionally defines the I_STDLIB symbol, which
3242 indicates to the C program that <stdlib.h> exists and should
3245 i_string (i_string.U):
3246 This variable conditionally defines the I_STRING symbol, which
3247 indicates that <string.h> should be included rather than <strings.h>.
3249 i_sunmath (i_sunmath.U):
3250 This variable conditionally defines the I_SUNMATH symbol, and indicates
3251 whether a C program should include <sunmath.h>.
3253 i_sysaccess (i_sysaccess.U):
3254 This variable conditionally defines the I_SYS_ACCESS symbol,
3255 and indicates whether a C program should include <sys/access.h>.
3257 i_sysdir (i_sysdir.U):
3258 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3259 whether a C program should include <sys/dir.h>.
3261 i_sysfile (i_sysfile.U):
3262 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3263 whether a C program should include <sys/file.h> to get R_OK and friends.
3265 i_sysfilio (i_sysioctl.U):
3266 This variable conditionally defines the I_SYS_FILIO symbol, which
3267 indicates to the C program that <sys/filio.h> exists and should
3268 be included in preference to <sys/ioctl.h>.
3271 This variable conditionally defines I_SYS_IN, which indicates
3272 to the C program that it should include <sys/in.h> instead of
3275 i_sysioctl (i_sysioctl.U):
3276 This variable conditionally defines the I_SYS_IOCTL symbol, which
3277 indicates to the C program that <sys/ioctl.h> exists and should
3280 i_syslog (i_syslog.U):
3281 This variable conditionally defines the I_SYSLOG symbol,
3282 and indicates whether a C program should include <syslog.h>.
3284 i_sysmman (i_sysmman.U):
3285 This variable conditionally defines the I_SYS_MMAN symbol, and
3286 indicates whether a C program should include <sys/mman.h>.
3288 i_sysmode (i_sysmode.U):
3289 This variable conditionally defines the I_SYSMODE symbol,
3290 and indicates whether a C program should include <sys/mode.h>.
3292 i_sysmount (i_sysmount.U):
3293 This variable conditionally defines the I_SYSMOUNT symbol,
3294 and indicates whether a C program should include <sys/mount.h>.
3296 i_sysndir (i_sysndir.U):
3297 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3298 whether a C program should include <sys/ndir.h>.
3300 i_sysparam (i_sysparam.U):
3301 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3302 whether a C program should include <sys/param.h>.
3304 i_syspoll (i_syspoll.U):
3305 This variable conditionally defines the I_SYS_POLL symbol, which
3306 indicates to the C program that it should include <sys/poll.h>.
3308 i_sysresrc (i_sysresrc.U):
3309 This variable conditionally defines the I_SYS_RESOURCE symbol,
3310 and indicates whether a C program should include <sys/resource.h>.
3312 i_syssecrt (i_syssecrt.U):
3313 This variable conditionally defines the I_SYS_SECURITY symbol,
3314 and indicates whether a C program should include <sys/security.h>.
3316 i_sysselct (i_sysselct.U):
3317 This variable conditionally defines I_SYS_SELECT, which indicates
3318 to the C program that it should include <sys/select.h> in order to
3319 get the definition of struct timeval.
3321 i_syssockio (i_sysioctl.U):
3322 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3323 C program that socket ioctl codes may be found in <sys/sockio.h>
3324 instead of <sys/ioctl.h>.
3326 i_sysstat (i_sysstat.U):
3327 This variable conditionally defines the I_SYS_STAT symbol,
3328 and indicates whether a C program should include <sys/stat.h>.
3330 i_sysstatfs (i_sysstatfs.U):
3331 This variable conditionally defines the I_SYSSTATFS symbol,
3332 and indicates whether a C program should include <sys/statfs.h>.
3334 i_sysstatvfs (i_sysstatvfs.U):
3335 This variable conditionally defines the I_SYSSTATVFS symbol,
3336 and indicates whether a C program should include <sys/statvfs.h>.
3338 i_systime (i_time.U):
3339 This variable conditionally defines I_SYS_TIME, which indicates
3340 to the C program that it should include <sys/time.h>.
3342 i_systimek (i_time.U):
3343 This variable conditionally defines I_SYS_TIME_KERNEL, which
3344 indicates to the C program that it should include <sys/time.h>
3345 with KERNEL defined.
3347 i_systimes (i_systimes.U):
3348 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3349 whether a C program should include <sys/times.h>.
3351 i_systypes (i_systypes.U):
3352 This variable conditionally defines the I_SYS_TYPES symbol,
3353 and indicates whether a C program should include <sys/types.h>.
3355 i_sysuio (i_sysuio.U):
3356 This variable conditionally defines the I_SYSUIO symbol, and indicates
3357 whether a C program should include <sys/uio.h>.
3359 i_sysun (i_sysun.U):
3360 This variable conditionally defines I_SYS_UN, which indicates
3361 to the C program that it should include <sys/un.h> to get UNIX
3362 domain socket definitions.
3364 i_sysutsname (i_sysutsname.U):
3365 This variable conditionally defines the I_SYSUTSNAME symbol,
3366 and indicates whether a C program should include <sys/utsname.h>.
3368 i_sysvfs (i_sysvfs.U):
3369 This variable conditionally defines the I_SYSVFS symbol,
3370 and indicates whether a C program should include <sys/vfs.h>.
3372 i_syswait (i_syswait.U):
3373 This variable conditionally defines I_SYS_WAIT, which indicates
3374 to the C program that it should include <sys/wait.h>.
3376 i_termio (i_termio.U):
3377 This variable conditionally defines the I_TERMIO symbol, which
3378 indicates to the C program that it should include <termio.h> rather
3381 i_termios (i_termio.U):
3382 This variable conditionally defines the I_TERMIOS symbol, which
3383 indicates to the C program that the POSIX <termios.h> file is
3387 This variable conditionally defines I_TIME, which indicates
3388 to the C program that it should include <time.h>.
3390 i_unistd (i_unistd.U):
3391 This variable conditionally defines the I_UNISTD symbol, and indicates
3392 whether a C program should include <unistd.h>.
3394 i_ustat (i_ustat.U):
3395 This variable conditionally defines the I_USTAT symbol, and indicates
3396 whether a C program should include <ustat.h>.
3398 i_utime (i_utime.U):
3399 This variable conditionally defines the I_UTIME symbol, and indicates
3400 whether a C program should include <utime.h>.
3402 i_values (i_values.U):
3403 This variable conditionally defines the I_VALUES symbol, and indicates
3404 whether a C program may include <values.h> to get symbols like MAXLONG
3407 i_varargs (i_varhdr.U):
3408 This variable conditionally defines I_VARARGS, which indicates
3409 to the C program that it should include <varargs.h>.
3411 i_varhdr (i_varhdr.U):
3412 Contains the name of the header to be included to get va_dcl definition.
3413 Typically one of varargs.h or stdarg.h.
3415 i_vfork (i_vfork.U):
3416 This variable conditionally defines the I_VFORK symbol, and indicates
3417 whether a C program should include vfork.h.
3419 ignore_versioned_solibs (libs.U):
3420 This variable should be non-empty if non-versioned shared
3421 libraries (libfoo.so.x.y) are to be ignored (because they
3422 cannot be linked against).
3424 inc_version_list (inc_version_list.U):
3425 This variable specifies the list of subdirectories in over
3426 which perl.c:incpush() and lib/lib.pm will automatically
3427 search when adding directories to @INC. The elements in
3428 the list are separated by spaces. This is only useful
3429 if you have a perl library directory tree structured like the
3430 default one. See INSTALL for how this works. The versioned
3431 site_perl directory was introduced in 5.005, so that is the
3432 lowest possible value.
3434 This list includes architecture-dependent directories back to
3435 version $api_versionstring (e.g. 5.5.640) and
3436 architecture-independent directories all the way back to
3439 inc_version_list_init (inc_version_list.U):
3440 This variable holds the same list as inc_version_list, but
3441 each item is enclosed in double quotes and separated by commas,
3442 suitable for use in the PERL_INC_VERSION_LIST initialization.
3445 This variable must precede the normal include path to get the
3446 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3447 Value can be "" or "/bsd43" on mips.
3450 This variable must precede the normal include path to get the
3451 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3452 Value can be "" or "/bsd43" on mips.
3455 This variable is defined but not used by Configure.
3456 The value is the empty string and is not useful.
3458 initialinstalllocation (bin.U):
3459 When userelocatableinc is true, this variable holds the location
3460 that make install should copy the perl binary to, with all the
3461 run-time relocatable paths calculated from this at install time.
3462 When used, it is initialized to the original value of binexp, and
3463 then binexp is set to '.../', as the other binaries are found
3464 relative to the perl binary.
3466 installarchlib (archlib.U):
3467 This variable is really the same as archlibexp but may differ on
3468 those systems using AFS. For extra portability, only this variable
3469 should be used in makefiles.
3472 This variable is the same as binexp unless AFS is running in which case
3473 the user is explicitly prompted for it. This variable should always
3474 be used in your makefiles for maximum portability.
3476 installhtml1dir (html1dir.U):
3477 This variable is really the same as html1direxp, unless you are
3478 using a different installprefix. For extra portability, you
3479 should only use this variable within your makefiles.
3481 installhtml3dir (html3dir.U):
3482 This variable is really the same as html3direxp, unless you are
3483 using a different installprefix. For extra portability, you
3484 should only use this variable within your makefiles.
3486 installman1dir (man1dir.U):
3487 This variable is really the same as man1direxp, unless you are using
3488 AFS in which case it points to the read/write location whereas
3489 man1direxp only points to the read-only access location. For extra
3490 portability, you should only use this variable within your makefiles.
3492 installman3dir (man3dir.U):
3493 This variable is really the same as man3direxp, unless you are using
3494 AFS in which case it points to the read/write location whereas
3495 man3direxp only points to the read-only access location. For extra
3496 portability, you should only use this variable within your makefiles.
3498 installprefix (installprefix.U):
3499 This variable holds the name of the directory below which
3500 "make install" will install the package. For most users, this
3501 is the same as prefix. However, it is useful for
3502 installing the software into a different (usually temporary)
3503 location after which it can be bundled up and moved somehow
3504 to the final location specified by prefix.
3506 installprefixexp (installprefix.U):
3507 This variable holds the full absolute path of installprefix
3508 with all ~-expansion done.
3510 installprivlib (privlib.U):
3511 This variable is really the same as privlibexp but may differ on
3512 those systems using AFS. For extra portability, only this variable
3513 should be used in makefiles.
3515 installscript (scriptdir.U):
3516 This variable is usually the same as scriptdirexp, unless you are on
3517 a system running AFS, in which case they may differ slightly. You
3518 should always use this variable within your makefiles for portability.
3520 installsitearch (sitearch.U):
3521 This variable is really the same as sitearchexp but may differ on
3522 those systems using AFS. For extra portability, only this variable
3523 should be used in makefiles.
3525 installsitebin (sitebin.U):
3526 This variable is usually the same as sitebinexp, unless you are on
3527 a system running AFS, in which case they may differ slightly. You
3528 should always use this variable within your makefiles for portability.
3530 installsitehtml1dir (sitehtml1dir.U):
3531 This variable is really the same as sitehtml1direxp, unless you are using
3532 AFS in which case it points to the read/write location whereas
3533 html1direxp only points to the read-only access location. For extra
3534 portability, you should only use this variable within your makefiles.
3536 installsitehtml3dir (sitehtml3dir.U):
3537 This variable is really the same as sitehtml3direxp, unless you are using
3538 AFS in which case it points to the read/write location whereas
3539 html3direxp only points to the read-only access location. For extra
3540 portability, you should only use this variable within your makefiles.
3542 installsitelib (sitelib.U):
3543 This variable is really the same as sitelibexp but may differ on
3544 those systems using AFS. For extra portability, only this variable
3545 should be used in makefiles.
3547 installsiteman1dir (siteman1dir.U):
3548 This variable is really the same as siteman1direxp, unless you are using
3549 AFS in which case it points to the read/write location whereas
3550 man1direxp only points to the read-only access location. For extra
3551 portability, you should only use this variable within your makefiles.
3553 installsiteman3dir (siteman3dir.U):
3554 This variable is really the same as siteman3direxp, unless you are using
3555 AFS in which case it points to the read/write location whereas
3556 man3direxp only points to the read-only access location. For extra
3557 portability, you should only use this variable within your makefiles.
3559 installsitescript (sitescript.U):
3560 This variable is usually the same as sitescriptexp, unless you are on
3561 a system running AFS, in which case they may differ slightly. You
3562 should always use this variable within your makefiles for portability.
3564 installstyle (installstyle.U):
3565 This variable describes the "style" of the perl installation.
3566 This is intended to be useful for tools that need to
3567 manipulate entire perl distributions. Perl itself doesn't use
3568 this to find its libraries -- the library directories are
3569 stored directly in Config.pm. Currently, there are only two
3570 styles: "lib" and "lib/perl5". The default library locations
3571 (e.g. privlib, sitelib) are either $prefix/lib or
3572 $prefix/lib/perl5. The former is useful if $prefix is a
3573 directory dedicated to perl (e.g. /opt/perl), while the latter
3574 is useful if $prefix is shared by many packages, e.g. if
3577 Unfortunately, while this "style" variable is used to set
3578 defaults for all three directory hierarchies (core, vendor, and
3579 site), there is no guarantee that the same style is actually
3580 appropriate for all those directories. For example, $prefix
3581 might be /opt/perl, but $siteprefix might be /usr/local.
3582 (Perhaps, in retrospect, the "lib" style should never have been
3583 supported, but it did seem like a nice idea at the time.)
3585 The situation is even less clear for tools such as MakeMaker
3586 that can be used to install additional modules into
3587 non-standard places. For example, if a user intends to install
3588 a module into a private directory (perhaps by setting PREFIX on
3589 the Makefile.PL command line), then there is no reason to
3590 assume that the Configure-time $installstyle setting will be
3591 relevant for that PREFIX.
3593 This may later be extended to include other information, so
3594 be careful with pattern-matching on the results.
3596 For compatibility with perl5.005 and earlier, the default
3597 setting is based on whether or not $prefix contains the string
3600 installusrbinperl (instubperl.U):
3601 This variable tells whether Perl should be installed also as
3602 /usr/bin/perl in addition to
3605 installvendorarch (vendorarch.U):
3606 This variable is really the same as vendorarchexp but may differ on
3607 those systems using AFS. For extra portability, only this variable
3608 should be used in makefiles.
3610 installvendorbin (vendorbin.U):
3611 This variable is really the same as vendorbinexp but may differ on
3612 those systems using AFS. For extra portability, only this variable
3613 should be used in makefiles.
3615 installvendorhtml1dir (vendorhtml1dir.U):
3616 This variable is really the same as vendorhtml1direxp but may differ on
3617 those systems using AFS. For extra portability, only this variable
3618 should be used in makefiles.
3620 installvendorhtml3dir (vendorhtml3dir.U):
3621 This variable is really the same as vendorhtml3direxp but may differ on
3622 those systems using AFS. For extra portability, only this variable
3623 should be used in makefiles.
3625 installvendorlib (vendorlib.U):
3626 This variable is really the same as vendorlibexp but may differ on
3627 those systems using AFS. For extra portability, only this variable
3628 should be used in makefiles.
3630 installvendorman1dir (vendorman1dir.U):
3631 This variable is really the same as vendorman1direxp but may differ on
3632 those systems using AFS. For extra portability, only this variable
3633 should be used in makefiles.
3635 installvendorman3dir (vendorman3dir.U):
3636 This variable is really the same as vendorman3direxp but may differ on
3637 those systems using AFS. For extra portability, only this variable
3638 should be used in makefiles.
3640 installvendorscript (vendorscript.U):
3641 This variable is really the same as vendorscriptexp but may differ on
3642 those systems using AFS. For extra portability, only this variable
3643 should be used in makefiles.
3645 intsize (intsize.U):
3646 This variable contains the value of the INTSIZE symbol, which
3647 indicates to the C program how many bytes there are in an int.
3649 issymlink (issymlink.U):
3650 This variable holds the test command to test for a symbolic link
3651 (if they are supported). Typical values include 'test -h' and
3654 ivdformat (perlxvf.U):
3655 This variable contains the format string used for printing
3656 a Perl IV as a signed decimal integer.
3659 This variable is the size of an IV in bytes.
3662 This variable contains the C type used for Perl's IV.
3664 known_extensions (Extensions.U):
3665 This variable holds a list of all extensions (both XS and non-xs)
3666 included in the package source distribution. This information is
3667 only really of use during the Perl build, as the list makes no
3668 distinction between extensions which were build and installed, and
3669 those which where not. See "extensions" for the list of extensions
3670 actually built and available.
3673 This variable is defined but not used by Configure.
3674 The value is the empty string and is not useful.
3677 This variable indicates the program to be used to link
3678 libraries for dynamic loading. On some systems, it is 'ld'.
3679 On ELF systems, it should be $cc. Mostly, we'll try to respect
3680 the hint file setting.
3682 ld_can_script (dlsrc.U):
3683 This variable shows if the loader accepts scripts in the form of
3684 -Wl,--version-script=ld.script. This is currently only supported
3685 for GNU ld on ELF in dynamic loading builds.
3687 lddlflags (dlsrc.U):
3688 This variable contains any special flags that might need to be
3689 passed to $ld to create a shared library suitable for dynamic
3690 loading. It is up to the makefile to use it. For hpux, it
3691 should be '-b'. For sunos 4.1, it is empty.
3693 ldflags (ccflags.U):
3694 This variable contains any additional C loader flags desired by
3695 the user. It is up to the Makefile to use this.
3697 ldflags_uselargefiles (uselfs.U):
3698 This variable contains the loader flags needed by large file builds
3699 and added to ldflags by hints files.
3701 ldlibpthname (libperl.U):
3702 This variable holds the name of the shared library
3703 search path, often LD_LIBRARY_PATH. To get an empty
3704 string, the hints file must set this to 'none'.
3707 This variable is used internally by Configure to determine the
3708 full pathname (if any) of the less program. After Configure runs,
3709 the value is reset to a plain "less" and is not useful.
3712 This is an old synonym for _a.
3715 This variable contains the location of the C library.
3717 libperl (libperl.U):
3718 The perl executable is obtained by linking perlmain.c with
3719 libperl, any static extensions (usually just DynaLoader),
3720 and any other libraries needed on this system. libperl
3721 is usually libperl.a, but can also be libperl.so.xxx if
3722 the user wishes to build a perl executable with a shared
3726 This variable holds the general path (space-separated) used to find
3727 libraries. It is intended to be used by other units.
3730 This variable holds the additional libraries we want to use.
3731 It is up to the Makefile to deal with it. The list can be empty.
3734 This variable holds the directory names aka dirnames of the libraries
3735 we found and accepted, duplicates are removed.
3738 This variable holds the filenames aka basenames of the libraries
3739 we found and accepted.
3742 This variable holds the full pathnames of the libraries
3743 we found and accepted.
3746 This variable holds the directory names probed for libraries.
3748 libswanted (Myinit.U):
3749 This variable holds a list of all the libraries we want to
3750 search. The order is chosen to pick up the c library
3751 ahead of ucb or bsd libraries for SVR4.
3753 libswanted_uselargefiles (uselfs.U):
3754 This variable contains the libraries needed by large file builds
3755 and added to ldflags by hints files. It is a space separated list
3756 of the library names without the "lib" prefix or any suffix, just
3760 This variable is defined but not used by Configure.
3761 The value is the empty string and is not useful.
3764 This variable is defined but not used by Configure.
3765 The value is the empty string and is not useful.
3767 lkflags (ccflags.U):
3768 This variable contains any additional C partial linker flags desired by
3769 the user. It is up to the Makefile to use this.
3772 This variable is used internally by Configure to determine the
3773 full pathname (if any) of the ln program. After Configure runs,
3774 the value is reset to a plain "ln" and is not useful.
3777 This variable holds the name of the command to make
3778 symbolic links (if they are supported). It can be used
3779 in the Makefile. It is either 'ln -s' or 'ln'
3781 localtime_r_proto (d_localtime_r.U):
3782 This variable encodes the prototype of localtime_r.
3783 It is zero if d_localtime_r is undef, and one of the
3784 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3787 locincpth (ccflags.U):
3788 This variable contains a list of additional directories to be
3789 searched by the compiler. The appropriate '-I' directives will
3790 be added to ccflags. This is intended to simplify setting
3791 local directories from the Configure command line.
3792 It's not much, but it parallels the loclibpth stuff in libpth.U.
3794 loclibpth (libpth.U):
3795 This variable holds the paths (space-separated) used to find local
3796 libraries. It is prepended to libpth, and is intended to be easily
3797 set from the command line.
3799 longdblsize (d_longdbl.U):
3800 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3801 indicates to the C program how many bytes there are in a long double,
3802 if this system supports long doubles.
3804 longlongsize (d_longlong.U):
3805 This variable contains the value of the LONGLONGSIZE symbol, which
3806 indicates to the C program how many bytes there are in a long long,
3807 if this system supports long long.
3809 longsize (intsize.U):
3810 This variable contains the value of the LONGSIZE symbol, which
3811 indicates to the C program how many bytes there are in a long.
3814 This variable is defined but not used by Configure.
3815 The value is the empty string and is not useful.
3818 This variable is defined but not used by Configure.
3819 The value is the empty string and is not useful.
3822 This variable is used internally by Configure to determine the
3823 full pathname (if any) of the ls program. After Configure runs,
3824 the value is reset to a plain "ls" and is not useful.
3826 lseeksize (lseektype.U):
3827 This variable defines lseektype to be something like off_t, long,
3828 or whatever type is used to declare lseek offset's type in the
3829 kernel (which also appears to be lseek's return type).
3831 lseektype (lseektype.U):
3832 This variable defines lseektype to be something like off_t, long,
3833 or whatever type is used to declare lseek offset's type in the
3834 kernel (which also appears to be lseek's return type).
3837 This variable is defined but not used by Configure.
3838 The value is the empty string and is not useful.
3841 This variable is defined but not used by Configure.
3842 The value is the empty string and is not useful.
3845 This variable is used internally by Configure to determine the
3846 full pathname (if any) of the make program. After Configure runs,
3847 the value is reset to a plain "make" and is not useful.
3849 make_set_make (make.U):
3850 Some versions of 'make' set the variable MAKE. Others do not.
3851 This variable contains the string to be included in Makefile.SH
3852 so that MAKE is set if needed, and not if not needed.
3853 Possible values are:
3855 make_set_make='#' # If your make program handles this for you,
3857 make_set_make="MAKE=$make" # if it doesn't.
3859 This uses a comment character so that we can distinguish a
3860 'set' value (from a previous config.sh or Configure '-D' option)
3861 from an uncomputed value.
3863 mallocobj (mallocsrc.U):
3864 This variable contains the name of the malloc.o that this package
3865 generates, if that malloc.o is preferred over the system malloc.
3866 Otherwise the value is null. This variable is intended for generating
3867 Makefiles. See mallocsrc.
3869 mallocsrc (mallocsrc.U):
3870 This variable contains the name of the malloc.c that comes with
3871 the package, if that malloc.c is preferred over the system malloc.
3872 Otherwise the value is null. This variable is intended for generating
3875 malloctype (mallocsrc.U):
3876 This variable contains the kind of ptr returned by malloc and realloc.
3878 man1dir (man1dir.U):
3879 This variable contains the name of the directory in which manual
3880 source pages are to be put. It is the responsibility of the
3881 Makefile.SH to get the value of this into the proper command.
3882 You must be prepared to do the ~name expansion yourself.
3884 man1direxp (man1dir.U):
3885 This variable is the same as the man1dir variable, but is filename
3886 expanded at configuration time, for convenient use in makefiles.
3888 man1ext (man1dir.U):
3889 This variable contains the extension that the manual page should
3890 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3893 man3dir (man3dir.U):
3894 This variable contains the name of the directory in which manual
3895 source pages are to be put. It is the responsibility of the
3896 Makefile.SH to get the value of this into the proper command.
3897 You must be prepared to do the ~name expansion yourself.
3899 man3direxp (man3dir.U):
3900 This variable is the same as the man3dir variable, but is filename
3901 expanded at configuration time, for convenient use in makefiles.
3903 man3ext (man3dir.U):
3904 This variable contains the extension that the manual page should
3905 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3908 mips_type (usrinc.U):
3909 This variable holds the environment type for the mips system.
3910 Possible values are "BSD 4.3" and "System V".
3912 mistrustnm (Csym.U):
3913 This variable can be used to establish a fallthrough for the cases
3914 where nm fails to find a symbol. If usenm is false or usenm is true
3915 and mistrustnm is false, this variable has no effect. If usenm is true
3916 and mistrustnm is "compile", a test program will be compiled to try to
3917 find any symbol that can't be located via nm lookup. If mistrustnm is
3918 "run", the test program will be run as well as being compiled.
3921 This variable is used internally by Configure to determine the
3922 full pathname (if any) of the mkdir program. After Configure runs,
3923 the value is reset to a plain "mkdir" and is not useful.
3925 mmaptype (d_mmap.U):
3926 This symbol contains the type of pointer returned by mmap()
3927 (and simultaneously the type of the first argument).
3928 It can be 'void *' or 'caddr_t'.
3930 modetype (modetype.U):
3931 This variable defines modetype to be something like mode_t,
3932 int, unsigned short, or whatever type is used to declare file
3933 modes for system calls.
3936 This variable is used internally by Configure to determine the
3937 full pathname (if any) of the more program. After Configure runs,
3938 the value is reset to a plain "more" and is not useful.
3940 multiarch (multiarch.U):
3941 This variable conditionally defines the MULTIARCH symbol
3942 which signifies the presence of multiplatform files.
3943 This is normally set by hints files.
3946 This variable is defined but not used by Configure.
3947 The value is the empty string and is not useful.
3949 myarchname (archname.U):
3950 This variable holds the architecture name computed by Configure in
3951 a previous run. It is not intended to be perused by any user and
3952 should never be set in a hint file.
3954 mydomain (myhostname.U):
3955 This variable contains the eventual value of the MYDOMAIN symbol,
3956 which is the domain of the host the program is going to run on.
3957 The domain must be appended to myhostname to form a complete host name.
3958 The dot comes with mydomain, and need not be supplied by the program.
3960 myhostname (myhostname.U):
3961 This variable contains the eventual value of the MYHOSTNAME symbol,
3962 which is the name of the host the program is going to run on.
3963 The domain is not kept with hostname, but must be gotten from mydomain.
3964 The dot comes with mydomain, and need not be supplied by the program.
3966 myuname (Oldconfig.U):
3967 The output of 'uname -a' if available, otherwise the hostname.
3968 The whole thing is then lower-cased and slashes and single quotes are
3972 This variable contains the '-n' flag if that is what causes the echo
3973 command to suppress newline. Otherwise it is null. Correct usage is
3974 $echo $n "prompt for a question: $c".
3976 need_va_copy (need_va_copy.U):
3977 This symbol, if defined, indicates that the system stores
3978 the variable argument list datatype, va_list, in a format
3979 that cannot be copied by simple assignment, so that some
3980 other means must be used when copying is required.
3981 As such systems vary in their provision (or non-provision)
3982 of copying mechanisms, handy.h defines a platform-
3983 independent macro, Perl_va_copy(src, dst), to do the job.
3985 netdb_hlen_type (netdbtype.U):
3986 This variable holds the type used for the 2nd argument to
3987 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3988 This is only useful if you have gethostbyaddr(), naturally.
3990 netdb_host_type (netdbtype.U):
3991 This variable holds the type used for the 1st argument to
3992 gethostbyaddr(). Usually, this is char * or void *, possibly
3993 with or without a const prefix.
3994 This is only useful if you have gethostbyaddr(), naturally.
3996 netdb_name_type (netdbtype.U):
3997 This variable holds the type used for the argument to
3998 gethostbyname(). Usually, this is char * or const char *.
3999 This is only useful if you have gethostbyname(), naturally.
4001 netdb_net_type (netdbtype.U):
4002 This variable holds the type used for the 1st argument to
4003 getnetbyaddr(). Usually, this is int or long.
4004 This is only useful if you have getnetbyaddr(), naturally.
4007 This variable is used internally by Configure to determine the
4008 full pathname (if any) of the nm program. After Configure runs,
4009 the value is reset to a plain "nm" and is not useful.
4012 This variable holds the options that may be necessary for nm.
4014 nm_so_opt (usenm.U):
4015 This variable holds the options that may be necessary for nm
4016 to work on a shared library but that can not be used on an
4017 archive library. Currently, this is only used by Linux, where
4018 nm --dynamic is *required* to get symbols from an ELF library which
4019 has been stripped, but nm --dynamic is *fatal* on an archive library.
4020 Maybe Linux should just always set usenm=false.
4022 nonxs_ext (Extensions.U):
4023 This variable holds a list of all non-xs extensions built and
4024 installed by the package. By default, all non-xs extensions
4025 distributed will be built, with the exception of platform-specific
4026 extensions (currently only one VMS specific extension).
4029 This variable is used internally by Configure to determine the
4030 full pathname (if any) of the nroff program. After Configure runs,
4031 the value is reset to a plain "nroff" and is not useful.
4033 nv_overflows_integers_at (perlxv.U):
4034 This variable gives the largest integer value that NVs can hold
4035 as a constant floating point expression.
4036 If it could not be determined, it holds the value 0.
4038 nv_preserves_uv_bits (perlxv.U):
4039 This variable indicates how many of bits type uvtype
4040 a variable nvtype can preserve.
4042 nveformat (perlxvf.U):
4043 This variable contains the format string used for printing
4044 a Perl NV using %e-ish floating point format.
4046 nvEUformat (perlxvf.U):
4047 This variable contains the format string used for printing
4048 a Perl NV using %E-ish floating point format.
4050 nvfformat (perlxvf.U):
4051 This variable contains the format string used for printing
4052 a Perl NV using %f-ish floating point format.
4054 nvFUformat (perlxvf.U):
4055 This variable contains the format string used for printing
4056 a Perl NV using %F-ish floating point format.
4058 nvgformat (perlxvf.U):
4059 This variable contains the format string used for printing
4060 a Perl NV using %g-ish floating point format.
4062 nvGUformat (perlxvf.U):
4063 This variable contains the format string used for printing
4064 a Perl NV using %G-ish floating point format.
4067 This variable is the size of an NV in bytes.
4070 This variable contains the C type used for Perl's NV.
4072 o_nonblock (nblock_io.U):
4073 This variable bears the symbol value to be used during open() or fcntl()
4074 to turn on non-blocking I/O for a file descriptor. If you wish to switch
4075 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
4076 but that is only supported by some devices.
4079 This is an old synonym for _o.
4081 old_pthread_create_joinable (d_pthrattrj.U):
4082 This variable defines the constant to use for creating joinable
4083 (aka undetached) pthreads. Unused if pthread.h defines
4084 PTHREAD_CREATE_JOINABLE. If used, possible values are
4085 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
4087 optimize (ccflags.U):
4088 This variable contains any optimizer/debugger flag that should be used.
4089 It is up to the Makefile to use it.
4091 orderlib (orderlib.U):
4092 This variable is "true" if the components of libraries must be ordered
4093 (with `lorder $* | tsort`) before placing them in an archive. Set to
4094 "false" if ranlib or ar can generate random libraries.
4096 osname (Oldconfig.U):
4097 This variable contains the operating system name (e.g. sunos,
4098 solaris, hpux, etc.). It can be useful later on for setting
4099 defaults. Any spaces are replaced with underscores. It is set
4100 to a null string if we can't figure it out.
4102 osvers (Oldconfig.U):
4103 This variable contains the operating system version (e.g.
4104 4.1.3, 5.2, etc.). It is primarily used for helping select
4105 an appropriate hints file, but might be useful elsewhere for
4106 setting defaults. It is set to '' if we can't figure it out.
4107 We try to be flexible about how much of the version number
4108 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
4109 same for this package, hints files might just be os_4.0 or
4110 os_4.1, etc., not keeping separate files for each little release.
4112 otherlibdirs (otherlibdirs.U):
4113 This variable contains a colon-separated set of paths for the perl
4114 binary to search for additional library files or modules.
4115 These directories will be tacked to the end of @INC.
4116 Perl will automatically search below each path for version-
4117 and architecture-specific directories. See inc_version_list
4119 A value of ' ' means 'none' and is used to preserve this value
4120 for the next run through Configure.
4122 package (package.U):
4123 This variable contains the name of the package being constructed.
4124 It is primarily intended for the use of later Configure units.
4127 This variable contains the name of the preferred pager on the system.
4128 Usual values are (the full pathnames of) more, less, pg, or cat.
4131 This variable contains a command that produces the text of the
4132 /etc/passwd file. This is normally "cat /etc/passwd", but can be
4133 "ypcat passwd" when NIS is used.
4134 On some systems, such as os390, there may be no equivalent
4135 command, in which case this variable is unset.
4137 patchlevel (patchlevel.U):
4138 The patchlevel level of this package.
4139 The value of patchlevel comes from the patchlevel.h file.
4140 In a version number such as 5.6.1, this is the "6".
4141 In patchlevel.h, this is referred to as "PERL_VERSION".
4144 This is an old synonym for p_ in Head.U, the character
4145 used to separate elements in the command shell search PATH.
4148 This variable is used internally by Configure to determine the
4149 full pathname (if any) of the perl program. After Configure runs,
4150 the value is reset to a plain "perl" and is not useful.
4153 This variable contains the full path (if any) to a previously
4154 installed perl5.005 or later suitable for running the script
4155 to determine inc_version_list.
4157 PERL_API_REVISION (patchlevel.h):
4158 This number describes the earliest compatible PERL_REVISION of
4159 Perl ("compatibility" here being defined as sufficient binary/API
4160 compatibility to run XS code built with the older version).
4161 Normally this does not change across maintenance releases.
4162 Please read the comment in patchlevel.h.
4164 PERL_API_SUBVERSION (patchlevel.h):
4165 This number describes the earliest compatible PERL_SUBVERSION of
4166 Perl ("compatibility" here being defined as sufficient binary/API
4167 compatibility to run XS code built with the older version).
4168 Normally this does not change across maintenance releases.
4169 Please read the comment in patchlevel.h.
4171 PERL_API_VERSION (patchlevel.h):
4172 This number describes the earliest compatible PERL_VERSION of
4173 Perl ("compatibility" here being defined as sufficient binary/API
4174 compatibility to run XS code built with the older version).
4175 Normally this does not change across maintenance releases.
4176 Please read the comment in patchlevel.h.
4178 PERL_CONFIG_SH (Oldsyms.U):
4179 This is set to 'true' in config.sh so that a shell script
4180 sourcing config.sh can tell if it has been sourced already.
4182 PERL_PATCHLEVEL (Oldsyms.U):
4183 This symbol reflects the patchlevel, if available. Will usually
4184 come from the .patch file, which is available when the perl
4185 source tree was fetched with rsync.
4187 perl_patchlevel (patchlevel.U):
4188 This is the Perl patch level, a numeric change identifier,
4189 as defined by whichever source code maintenance system
4190 is used to maintain the patches; currently Perforce.
4191 It does not correlate with the Perl version numbers or
4192 the maintenance versus development dichotomy except
4193 by also being increasing.
4195 PERL_REVISION (Oldsyms.U):
4196 In a Perl version number such as 5.6.2, this is the 5.
4197 This value is manually set in patchlevel.h
4199 perl_static_inline (d_static_inline.U):
4200 This variable defines the PERL_STATIC_INLINE symbol to
4201 the best-guess incantation to use for static inline functions.
4202 Possibilities include
4204 static __inline__ (gcc -ansi)
4205 static __inline (MSVC)
4206 static _inline (older MSVC)
4207 static (c89 compilers)
4209 PERL_SUBVERSION (Oldsyms.U):
4210 In a Perl version number such as 5.6.2, this is the 2.
4211 Values greater than 50 represent potentially unstable
4212 development subversions.
4213 This value is manually set in patchlevel.h
4215 PERL_VERSION (Oldsyms.U):
4216 In a Perl version number such as 5.6.2, this is the 6.
4217 This value is manually set in patchlevel.h
4219 perladmin (perladmin.U):
4220 Electronic mail address of the perl5 administrator.
4223 The list of libraries needed by Perl only (any libraries needed
4224 by extensions only will by dropped, if using dynamic loading).
4226 perlpath (perlpath.U):
4227 This variable contains the eventual value of the PERLPATH symbol,
4228 which contains the name of the perl interpreter to be used in
4229 shell scripts and in the "eval 'exec'" idiom. This variable is
4230 not necessarily the pathname of the file containing the perl
4231 interpreter; you must append the executable extension (_exe) if
4232 it is not already present. Note that Perl code that runs during
4233 the Perl build process cannot reference this variable, as Perl
4234 may not have been installed, or even if installed, may be a
4235 different version of Perl.
4238 This variable is used internally by Configure to determine the
4239 full pathname (if any) of the pg program. After Configure runs,
4240 the value is reset to a plain "pg" and is not useful.
4242 phostname (myhostname.U):
4243 This variable contains the eventual value of the PHOSTNAME symbol,
4244 which is a command that can be fed to popen() to get the host name.
4245 The program should probably not presume that the domain is or isn't
4248 pidtype (pidtype.U):
4249 This variable defines PIDTYPE to be something like pid_t, int,
4250 ushort, or whatever type is used to declare process ids in the kernel.
4253 Holds the private path used by Configure to find out the libraries.
4254 Its value is prepend to libpth. This variable takes care of special
4255 machines, like the mips. Usually, it should be empty.
4258 This variable is defined but not used by Configure.
4259 The value is the empty string and is not useful.
4262 This variable is defined but not used by Configure.
4263 The value is the empty string and is not useful.
4266 This variable holds the name of the directory below which the
4267 user will install the package. Usually, this is /usr/local, and
4268 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4269 man pages in /usr/local/man, etc. It is only used to set defaults
4270 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4272 prefixexp (prefix.U):
4273 This variable holds the full absolute path of the directory below
4274 which the user will install the package. Derived from prefix.
4276 privlib (privlib.U):
4277 This variable contains the eventual value of the PRIVLIB symbol,
4278 which is the name of the private library for this package. It may
4279 have a ~ on the front. It is up to the makefile to eventually create
4280 this directory while performing installation (with ~ substitution).
4282 privlibexp (privlib.U):
4283 This variable is the ~name expanded version of privlib, so that you
4284 may use it directly in Makefiles or shell scripts.
4286 procselfexe (d_procselfexe.U):
4287 If d_procselfexe is defined, $procselfexe is the filename
4288 of the symbolic link pointing to the absolute pathname of
4289 the executing program.
4291 prototype (prototype.U):
4292 This variable holds the eventual value of CAN_PROTOTYPE, which
4293 indicates the C compiler can handle function prototypes.
4295 ptrsize (ptrsize.U):
4296 This variable contains the value of the PTRSIZE symbol, which
4297 indicates to the C program how many bytes there are in a pointer.
4299 quadkind (quadtype.U):
4300 This variable, if defined, encodes the type of a quad:
4301 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4303 quadtype (quadtype.U):
4304 This variable defines Quad_t to be something like long, int,
4305 long long, int64_t, or whatever type is used for 64-bit integers.
4307 randbits (randfunc.U):
4308 Indicates how many bits are produced by the function used to
4309 generate normalized random numbers.
4311 randfunc (randfunc.U):
4312 Indicates the name of the random number function to use.
4313 Values include drand48, random, and rand. In C programs,
4314 the 'Drand01' macro is defined to generate uniformly distributed
4315 random numbers over the range [0., 1.[ (see drand01 and nrand).
4317 random_r_proto (d_random_r.U):
4318 This variable encodes the prototype of random_r.
4319 It is zero if d_random_r is undef, and one of the
4320 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4323 randseedtype (randfunc.U):
4324 Indicates the type of the argument of the seedfunc.
4326 ranlib (orderlib.U):
4327 This variable is set to the pathname of the ranlib program, if it is
4328 needed to generate random libraries. Set to ":" if ar can generate
4329 random libraries or if random libraries are not supported
4331 rd_nodata (nblock_io.U):
4332 This variable holds the return code from read() when no data is
4333 present. It should be -1, but some systems return 0 when O_NDELAY is
4334 used, which is a shame because you cannot make the difference between
4335 no data and an EOF.. Sigh!
4337 readdir64_r_proto (d_readdir64_r.U):
4338 This variable encodes the prototype of readdir64_r.
4339 It is zero if d_readdir64_r is undef, and one of the
4340 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4343 readdir_r_proto (d_readdir_r.U):
4344 This variable encodes the prototype of readdir_r.
4345 It is zero if d_readdir_r is undef, and one of the
4346 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4349 revision (patchlevel.U):
4350 The value of revision comes from the patchlevel.h file.
4351 In a version number such as 5.6.1, this is the "5".
4352 In patchlevel.h, this is referred to as "PERL_REVISION".
4355 This variable is used internally by Configure to determine the
4356 full pathname (if any) of the rm program. After Configure runs,
4357 the value is reset to a plain "rm" and is not useful.
4360 This is a cleanup variable for try test programs.
4361 Internal Configure use only.
4364 This variable is defined but not used by Configure.
4365 The value is the empty string and is not useful.
4368 This variable contains the command used by Configure
4369 to copy and execute a cross-compiled executable in the
4370 target host. Useful and available only during Perl build.
4371 Empty string '' if not cross-compiling.
4374 This variable contains 'true' or 'false' depending whether the
4375 nm extraction should be performed or not, according to the value
4376 of usenm and the flags on the Configure command line.
4378 sched_yield (d_pthread_y.U):
4379 This variable defines the way to yield the execution
4380 of the current thread.
4382 scriptdir (scriptdir.U):
4383 This variable holds the name of the directory in which the user wants
4384 to put publicly scripts for the package in question. It is either
4385 the same directory as for binaries, or a special one that can be
4386 mounted across different architectures, like /usr/share. Programs
4387 must be prepared to deal with ~name expansion.
4389 scriptdirexp (scriptdir.U):
4390 This variable is the same as scriptdir, but is filename expanded
4391 at configuration time, for programs not wanting to bother with it.
4394 This variable is used internally by Configure to determine the
4395 full pathname (if any) of the sed program. After Configure runs,
4396 the value is reset to a plain "sed" and is not useful.
4398 seedfunc (randfunc.U):
4399 Indicates the random number generating seed function.
4400 Values include srand48, srandom, and srand.
4402 selectminbits (selectminbits.U):
4403 This variable holds the minimum number of bits operated by select.
4404 That is, if you do select(n, ...), how many bits at least will be
4405 cleared in the masks if some activity is detected. Usually this
4406 is either n or 32*ceil(n/32), especially many little-endians do
4407 the latter. This is only useful if you have select(), naturally.
4409 selecttype (selecttype.U):
4410 This variable holds the type used for the 2nd, 3rd, and 4th
4411 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4412 is defined, and 'int *' otherwise. This is only useful if you
4413 have select(), naturally.
4416 This variable is defined but not used by Configure.
4417 The value is the empty string and is not useful.
4419 setgrent_r_proto (d_setgrent_r.U):
4420 This variable encodes the prototype of setgrent_r.
4421 It is zero if d_setgrent_r is undef, and one of the
4422 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4425 sethostent_r_proto (d_sethostent_r.U):
4426 This variable encodes the prototype of sethostent_r.
4427 It is zero if d_sethostent_r is undef, and one of the
4428 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4431 setlocale_r_proto (d_setlocale_r.U):
4432 This variable encodes the prototype of setlocale_r.
4433 It is zero if d_setlocale_r is undef, and one of the
4434 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4437 setnetent_r_proto (d_setnetent_r.U):
4438 This variable encodes the prototype of setnetent_r.
4439 It is zero if d_setnetent_r is undef, and one of the
4440 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4443 setprotoent_r_proto (d_setprotoent_r.U):
4444 This variable encodes the prototype of setprotoent_r.
4445 It is zero if d_setprotoent_r is undef, and one of the
4446 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4449 setpwent_r_proto (d_setpwent_r.U):
4450 This variable encodes the prototype of setpwent_r.
4451 It is zero if d_setpwent_r is undef, and one of the
4452 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4455 setservent_r_proto (d_setservent_r.U):
4456 This variable encodes the prototype of setservent_r.
4457 It is zero if d_setservent_r is undef, and one of the
4458 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4461 sGMTIME_max (time_size.U):
4462 This variable defines the maximum value of the time_t offset that
4463 the system function gmtime () accepts
4465 sGMTIME_min (time_size.U):
4466 This variable defines the minimum value of the time_t offset that
4467 the system function gmtime () accepts
4470 This variable contains the full pathname of the shell used
4471 on this system to execute Bourne shell scripts. Usually, this will be
4472 /bin/sh, though it's possible that some systems will have /bin/ksh,
4473 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4475 This unit comes before Options.U, so you can't set sh with a '-D'
4476 option, though you can override this (and startsh)
4477 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4480 This variable is defined but not used by Configure.
4481 The value is the empty string and is not useful.
4483 sharpbang (spitshell.U):
4484 This variable contains the string #! if this system supports that
4487 shmattype (d_shmat.U):
4488 This symbol contains the type of pointer returned by shmat().
4489 It can be 'void *' or 'char *'.
4491 shortsize (intsize.U):
4492 This variable contains the value of the SHORTSIZE symbol which
4493 indicates to the C program how many bytes there are in a short.
4495 shrpenv (libperl.U):
4496 If the user builds a shared libperl.so, then we need to tell the
4497 'perl' executable where it will be able to find the installed libperl.so.
4498 One way to do this on some systems is to set the environment variable
4499 LD_RUN_PATH to the directory that will be the final location of the
4500 shared libperl.so. The makefile can use this with something like
4501 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4503 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4506 See the main perl Makefile.SH for actual working usage.
4507 Alternatively, we might be able to use a command line option such
4508 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4509 $archlibexp/CORE (Linux).
4511 shsharp (spitshell.U):
4512 This variable tells further Configure units whether your sh can
4515 sig_count (sig_name.U):
4516 This variable holds a number larger than the largest valid
4517 signal number. This is usually the same as the NSIG macro.
4519 sig_name (sig_name.U):
4520 This variable holds the signal names, space separated. The leading
4521 SIG in signal name is removed. A ZERO is prepended to the list.
4522 This is currently not used, sig_name_init is used instead.
4524 sig_name_init (sig_name.U):
4525 This variable holds the signal names, enclosed in double quotes and
4526 separated by commas, suitable for use in the SIG_NAME definition
4527 below. A "ZERO" is prepended to the list, and the list is
4528 terminated with a plain 0. The leading SIG in signal names
4529 is removed. See sig_num.
4531 sig_num (sig_name.U):
4532 This variable holds the signal numbers, space separated. A ZERO is
4533 prepended to the list (corresponding to the fake SIGZERO).
4534 Those numbers correspond to the value of the signal listed
4535 in the same place within the sig_name list.
4536 This is currently not used, sig_num_init is used instead.
4538 sig_num_init (sig_name.U):
4539 This variable holds the signal numbers, enclosed in double quotes and
4540 separated by commas, suitable for use in the SIG_NUM definition
4541 below. A "ZERO" is prepended to the list, and the list is
4542 terminated with a plain 0.
4544 sig_size (sig_name.U):
4545 This variable contains the number of elements of the sig_name
4548 signal_t (d_voidsig.U):
4549 This variable holds the type of the signal handler (void or int).
4551 sitearch (sitearch.U):
4552 This variable contains the eventual value of the SITEARCH symbol,
4553 which is the name of the private library for this package. It may
4554 have a ~ on the front. It is up to the makefile to eventually create
4555 this directory while performing installation (with ~ substitution).
4556 The standard distribution will put nothing in this directory.
4557 After perl has been installed, users may install their own local
4558 architecture-dependent modules in this directory with
4559 MakeMaker Makefile.PL
4560 or equivalent. See INSTALL for details.
4562 sitearchexp (sitearch.U):
4563 This variable is the ~name expanded version of sitearch, so that you
4564 may use it directly in Makefiles or shell scripts.
4566 sitebin (sitebin.U):
4567 This variable holds the name of the directory in which the user wants
4568 to put add-on publicly executable files for the package in question. It
4569 is most often a local directory such as /usr/local/bin. Programs using
4570 this variable must be prepared to deal with ~name substitution.
4571 The standard distribution will put nothing in this directory.
4572 After perl has been installed, users may install their own local
4573 executables in this directory with
4574 MakeMaker Makefile.PL
4575 or equivalent. See INSTALL for details.
4577 sitebinexp (sitebin.U):
4578 This is the same as the sitebin variable, but is filename expanded at
4579 configuration time, for use in your makefiles.
4581 sitehtml1dir (sitehtml1dir.U):
4582 This variable contains the name of the directory in which site-specific
4583 html source pages are to be put. It is the responsibility of the
4584 Makefile.SH to get the value of this into the proper command.
4585 You must be prepared to do the ~name expansion yourself.
4586 The standard distribution will put nothing in this directory.
4587 After perl has been installed, users may install their own local
4588 html pages in this directory with
4589 MakeMaker Makefile.PL
4590 or equivalent. See INSTALL for details.
4592 sitehtml1direxp (sitehtml1dir.U):
4593 This variable is the same as the sitehtml1dir variable, but is filename
4594 expanded at configuration time, for convenient use in makefiles.
4596 sitehtml3dir (sitehtml3dir.U):
4597 This variable contains the name of the directory in which site-specific
4598 library html source pages are to be put. It is the responsibility of the
4599 Makefile.SH to get the value of this into the proper command.
4600 You must be prepared to do the ~name expansion yourself.
4601 The standard distribution will put nothing in this directory.
4602 After perl has been installed, users may install their own local
4603 library html pages in this directory with
4604 MakeMaker Makefile.PL
4605 or equivalent. See INSTALL for details.
4607 sitehtml3direxp (sitehtml3dir.U):
4608 This variable is the same as the sitehtml3dir variable, but is filename
4609 expanded at configuration time, for convenient use in makefiles.
4611 sitelib (sitelib.U):
4612 This variable contains the eventual value of the SITELIB symbol,
4613 which is the name of the private library for this package. It may
4614 have a ~ on the front. It is up to the makefile to eventually create
4615 this directory while performing installation (with ~ substitution).
4616 The standard distribution will put nothing in this directory.
4617 After perl has been installed, users may install their own local
4618 architecture-independent modules in this directory with
4619 MakeMaker Makefile.PL
4620 or equivalent. See INSTALL for details.
4622 sitelib_stem (sitelib.U):
4623 This variable is $sitelibexp with any trailing version-specific component
4624 removed. The elements in inc_version_list (inc_version_list.U) can
4625 be tacked onto this variable to generate a list of directories to search.
4627 sitelibexp (sitelib.U):
4628 This variable is the ~name expanded version of sitelib, so that you
4629 may use it directly in Makefiles or shell scripts.
4631 siteman1dir (siteman1dir.U):
4632 This variable contains the name of the directory in which site-specific
4633 manual source pages are to be put. It is the responsibility of the
4634 Makefile.SH to get the value of this into the proper command.
4635 You must be prepared to do the ~name expansion yourself.
4636 The standard distribution will put nothing in this directory.
4637 After perl has been installed, users may install their own local
4638 man1 pages in this directory with
4639 MakeMaker Makefile.PL
4640 or equivalent. See INSTALL for details.
4642 siteman1direxp (siteman1dir.U):
4643 This variable is the same as the siteman1dir variable, but is filename
4644 expanded at configuration time, for convenient use in makefiles.
4646 siteman3dir (siteman3dir.U):
4647 This variable contains the name of the directory in which site-specific
4648 library man source pages are to be put. It is the responsibility of the
4649 Makefile.SH to get the value of this into the proper command.
4650 You must be prepared to do the ~name expansion yourself.
4651 The standard distribution will put nothing in this directory.
4652 After perl has been installed, users may install their own local
4653 man3 pages in this directory with
4654 MakeMaker Makefile.PL
4655 or equivalent. See INSTALL for details.
4657 siteman3direxp (siteman3dir.U):
4658 This variable is the same as the siteman3dir variable, but is filename
4659 expanded at configuration time, for convenient use in makefiles.
4661 siteprefix (siteprefix.U):
4662 This variable holds the full absolute path of the directory below
4663 which the user will install add-on packages.
4664 See INSTALL for usage and examples.
4666 siteprefixexp (siteprefix.U):
4667 This variable holds the full absolute path of the directory below
4668 which the user will install add-on packages. Derived from siteprefix.
4670 sitescript (sitescript.U):
4671 This variable holds the name of the directory in which the user wants
4672 to put add-on publicly executable files for the package in question. It
4673 is most often a local directory such as /usr/local/bin. Programs using
4674 this variable must be prepared to deal with ~name substitution.
4675 The standard distribution will put nothing in this directory.
4676 After perl has been installed, users may install their own local
4677 scripts in this directory with
4678 MakeMaker Makefile.PL
4679 or equivalent. See INSTALL for details.
4681 sitescriptexp (sitescript.U):
4682 This is the same as the sitescript variable, but is filename expanded at
4683 configuration time, for use in your makefiles.
4685 sizesize (sizesize.U):
4686 This variable contains the size of a sizetype in bytes.
4688 sizetype (sizetype.U):
4689 This variable defines sizetype to be something like size_t,
4690 unsigned long, or whatever type is used to declare length
4691 parameters for string functions.
4694 This variable is defined but not used by Configure.
4695 The value is the empty string and is not useful.
4697 sLOCALTIME_max (time_size.U):
4698 This variable defines the maximum value of the time_t offset that
4699 the system function localtime () accepts
4701 sLOCALTIME_min (time_size.U):
4702 This variable defines the minimum value of the time_t offset that
4703 the system function localtime () accepts
4706 This variable is defined but not used by Configure.
4707 The value is the empty string and is not useful.
4710 This variable holds the extension used to identify shared libraries
4711 (also known as shared objects) on the system. Usually set to 'so'.
4713 sockethdr (d_socket.U):
4714 This variable has any cpp '-I' flags needed for socket support.
4716 socketlib (d_socket.U):
4717 This variable has the names of any libraries needed for socket support.
4719 socksizetype (socksizetype.U):
4720 This variable holds the type used for the size argument
4721 for various socket calls like accept. Usual values include
4722 socklen_t, size_t, and int.
4725 This variable is used internally by Configure to determine the
4726 full pathname (if any) of the sort program. After Configure runs,
4727 the value is reset to a plain "sort" and is not useful.
4729 spackage (package.U):
4730 This variable contains the name of the package being constructed,
4731 with the first letter uppercased, i.e. suitable for starting
4734 spitshell (spitshell.U):
4735 This variable contains the command necessary to spit out a runnable
4736 shell on this system. It is either cat or a grep '-v' for # comments.
4738 sPRId64 (quadfio.U):
4739 This variable, if defined, contains the string used by stdio to
4740 format 64-bit decimal numbers (format 'd') for output.
4742 sPRIeldbl (longdblfio.U):
4743 This variable, if defined, contains the string used by stdio to
4744 format long doubles (format 'e') for output.
4746 sPRIEUldbl (longdblfio.U):
4747 This variable, if defined, contains the string used by stdio to
4748 format long doubles (format 'E') for output.
4749 The 'U' in the name is to separate this from sPRIeldbl so that even
4750 case-blind systems can see the difference.
4752 sPRIfldbl (longdblfio.U):
4753 This variable, if defined, contains the string used by stdio to
4754 format long doubles (format 'f') for output.
4756 sPRIFUldbl (longdblfio.U):
4757 This variable, if defined, contains the string used by stdio to
4758 format long doubles (format 'F') for output.
4759 The 'U' in the name is to separate this from sPRIfldbl so that even
4760 case-blind systems can see the difference.
4762 sPRIgldbl (longdblfio.U):
4763 This variable, if defined, contains the string used by stdio to
4764 format long doubles (format 'g') for output.
4766 sPRIGUldbl (longdblfio.U):
4767 This variable, if defined, contains the string used by stdio to
4768 format long doubles (format 'G') for output.
4769 The 'U' in the name is to separate this from sPRIgldbl so that even
4770 case-blind systems can see the difference.
4772 sPRIi64 (quadfio.U):
4773 This variable, if defined, contains the string used by stdio to
4774 format 64-bit decimal numbers (format 'i') for output.
4776 sPRIo64 (quadfio.U):
4777 This variable, if defined, contains the string used by stdio to
4778 format 64-bit octal numbers (format 'o') for output.
4780 sPRIu64 (quadfio.U):
4781 This variable, if defined, contains the string used by stdio to
4782 format 64-bit unsigned decimal numbers (format 'u') for output.
4784 sPRIx64 (quadfio.U):
4785 This variable, if defined, contains the string used by stdio to
4786 format 64-bit hexadecimal numbers (format 'x') for output.
4788 sPRIXU64 (quadfio.U):
4789 This variable, if defined, contains the string used by stdio to
4790 format 64-bit hExADECimAl numbers (format 'X') for output.
4791 The 'U' in the name is to separate this from sPRIx64 so that even
4792 case-blind systems can see the difference.
4794 srand48_r_proto (d_srand48_r.U):
4795 This variable encodes the prototype of srand48_r.
4796 It is zero if d_srand48_r is undef, and one of the
4797 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4800 srandom_r_proto (d_srandom_r.U):
4801 This variable encodes the prototype of srandom_r.
4802 It is zero if d_srandom_r is undef, and one of the
4803 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4807 This variable holds the (possibly relative) path of the package source.
4808 It is up to the Makefile to use this variable and set VPATH accordingly
4809 to find the sources remotely. Use $pkgsrc to have an absolute path.
4811 sSCNfldbl (longdblfio.U):
4812 This variable, if defined, contains the string used by stdio to
4813 format long doubles (format 'f') for input.
4815 ssizetype (ssizetype.U):
4816 This variable defines ssizetype to be something like ssize_t,
4817 long or int. It is used by functions that return a count
4818 of bytes or an error condition. It must be a signed type.
4819 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4821 st_ino_sign (st_ino_def.U):
4822 This variable contains the signedness of struct stat's st_ino.
4823 1 for unsigned, -1 for signed.
4825 st_ino_size (st_ino_def.U):
4826 This variable contains the size of struct stat's st_ino in bytes.
4828 startperl (startperl.U):
4829 This variable contains the string to put on the front of a perl
4830 script to make sure (hopefully) that it runs with perl and not some
4831 shell. Of course, that leading line must be followed by the classical
4833 eval 'exec perl -S $0 ${1+"$@"}'
4834 if $running_under_some_shell;
4835 to guarantee perl startup should the shell execute the script. Note
4836 that this magic incantation is not understood by csh.
4838 startsh (startsh.U):
4839 This variable contains the string to put on the front of a shell
4840 script to make sure (hopefully) that it runs with sh and not some
4843 static_ext (Extensions.U):
4844 This variable holds a list of XS extension files we want to
4845 link statically into the package. It is used by Makefile.
4847 stdchar (stdchar.U):
4848 This variable conditionally defines STDCHAR to be the type of char
4849 used in stdio.h. It has the values "unsigned char" or "char".
4851 stdio_base (d_stdstdio.U):
4852 This variable defines how, given a FILE pointer, fp, to access the
4853 _base field (or equivalent) of stdio.h's FILE structure. This will
4854 be used to define the macro FILE_base(fp).
4856 stdio_bufsiz (d_stdstdio.U):
4857 This variable defines how, given a FILE pointer, fp, to determine
4858 the number of bytes store in the I/O buffer pointer to by the
4859 _base field (or equivalent) of stdio.h's FILE structure. This will
4860 be used to define the macro FILE_bufsiz(fp).
4862 stdio_cnt (d_stdstdio.U):
4863 This variable defines how, given a FILE pointer, fp, to access the
4864 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4865 be used to define the macro FILE_cnt(fp).
4867 stdio_filbuf (d_stdstdio.U):
4868 This variable defines how, given a FILE pointer, fp, to tell
4869 stdio to refill its internal buffers (?). This will
4870 be used to define the macro FILE_filbuf(fp).
4872 stdio_ptr (d_stdstdio.U):
4873 This variable defines how, given a FILE pointer, fp, to access the
4874 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4875 be used to define the macro FILE_ptr(fp).
4877 stdio_stream_array (stdio_streams.U):
4878 This variable tells the name of the array holding the stdio streams.
4879 Usual values include _iob, __iob, and __sF.
4881 strerror_r_proto (d_strerror_r.U):
4882 This variable encodes the prototype of strerror_r.
4883 It is zero if d_strerror_r is undef, and one of the
4884 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4887 strings (i_string.U):
4888 This variable holds the full path of the string header that will be
4889 used. Typically /usr/include/string.h or /usr/include/strings.h.
4892 This variable is defined but not used by Configure.
4893 The value is the empty string and is not useful.
4895 subversion (patchlevel.U):
4896 The subversion level of this package.
4897 The value of subversion comes from the patchlevel.h file.
4898 In a version number such as 5.6.1, this is the "1".
4899 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4900 This is unique to perl.
4903 This variable holds the place where the manual is located on this
4904 system. It is not the place where the user wants to put his manual
4905 pages. Rather it is the place where Configure may look to find manual
4906 for unix commands (section 1 of the manual usually). See mansrc.
4908 sysroot (Sysroot.U):
4909 This variable is empty unless supplied by the Configure user.
4910 It can contain a path to an alternative root directory, under which
4911 headers and libraries for the compilation target can be found. This
4912 is generally used when cross-compiling using a gcc-like compiler.
4915 This variable is defined but not used by Configure.
4916 The value is the empty string and is not useful.
4919 This variable is defined but not used by Configure.
4920 The value is the empty string and is not useful.
4922 targetarch (Cross.U):
4923 If cross-compiling, this variable contains the target architecture.
4924 If not, this will be empty.
4926 targetdir (Cross.U):
4927 This variable contains a path that will be created on the target
4928 host using targetmkdir, and then used to copy the cross-compiled
4929 executables to. Defaults to '/tmp' if not set.
4931 targetenv (Cross.U):
4932 If cross-compiling, this variable can be used to modify the
4933 environment on the target system.
4934 However, how and where it's used, and even if it's used at all, is
4935 entirely dependent on both the transport mechanism (targetrun) and
4936 what the target system is. Unless the relevant documentation says
4937 otherwise, it is genereally not useful.
4939 targethost (Cross.U):
4940 This variable contains the name of a separate host machine that
4941 can be used to run compiled test programs and perl tests on.
4942 Set to empty string if not in use.
4944 targetmkdir (Cross.U):
4945 This variable contains the command used by Configure to create a
4946 new directory on the target host.
4948 targetport (Cross.U):
4949 This variable contains the number of a network port to be used to
4950 connect to the host in targethost, if unset defaults to 22 for ssh.
4953 If cross-compiling, this variable contains the location of sh on the
4955 If not, this will be the same as $sh.
4958 This variable is defined but not used by Configure.
4959 The value is the empty string and is not useful.
4962 This variable is defined but not used by Configure.
4963 The value is the empty string and is not useful.
4966 This variable is used internally by Configure to determine the
4967 full pathname (if any) of the test program. After Configure runs,
4968 the value is reset to a plain "test" and is not useful.
4970 timeincl (i_time.U):
4971 This variable holds the full path of the included time header(s).
4973 timetype (d_time.U):
4974 This variable holds the type returned by time(). It can be long,
4975 or time_t on BSD sites (in which case <sys/types.h> should be
4976 included). Anyway, the type Time_t should be used.
4978 tmpnam_r_proto (d_tmpnam_r.U):
4979 This variable encodes the prototype of tmpnam_r.
4980 It is zero if d_tmpnam_r is undef, and one of the
4981 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4985 This variable contains the command used by Configure
4986 to copy to from the target host. Useful and available
4987 only during Perl build.
4988 The string ':' if not cross-compiling.
4991 This variable is used internally by Configure to determine the
4992 full pathname (if any) of the touch program. After Configure runs,
4993 the value is reset to a plain "touch" and is not useful.
4996 This variable is used internally by Configure to determine the
4997 full pathname (if any) of the tr program. After Configure runs,
4998 the value is reset to a plain "tr" and is not useful.
5001 This variable contains the value to be passed to the tr(1)
5002 command to transliterate a newline. Typical values are
5003 '\012' and '\n'. This is needed for EBCDIC systems where
5004 newline is not necessarily '\012'.
5007 This variable is defined but not used by Configure.
5008 The value is the empty string and is not useful.
5010 ttyname_r_proto (d_ttyname_r.U):
5011 This variable encodes the prototype of ttyname_r.
5012 It is zero if d_ttyname_r is undef, and one of the
5013 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
5017 This variable is the size of an U16 in bytes.
5020 This variable contains the C type used for Perl's U16.
5023 This variable is the size of an U32 in bytes.
5026 This variable contains the C type used for Perl's U32.
5029 This variable is the size of an U64 in bytes.
5032 This variable contains the C type used for Perl's U64.
5035 This variable is the size of an U8 in bytes.
5038 This variable contains the C type used for Perl's U8.
5041 This variable contains the format string used for printing a Uid_t.
5043 uidsign (uidsign.U):
5044 This variable contains the signedness of a uidtype.
5045 1 for unsigned, -1 for signed.
5047 uidsize (uidsize.U):
5048 This variable contains the size of a uidtype in bytes.
5050 uidtype (uidtype.U):
5051 This variable defines Uid_t to be something like uid_t, int,
5052 ushort, or whatever type is used to declare user ids in the kernel.
5055 This variable is used internally by Configure to determine the
5056 full pathname (if any) of the uname program. After Configure runs,
5057 the value is reset to a plain "uname" and is not useful.
5060 This variable is used internally by Configure to determine the
5061 full pathname (if any) of the uniq program. After Configure runs,
5062 the value is reset to a plain "uniq" and is not useful.
5064 uquadtype (quadtype.U):
5065 This variable defines Uquad_t to be something like unsigned long,
5066 unsigned int, unsigned long long, uint64_t, or whatever type is
5067 used for 64-bit integers.
5069 use5005threads (usethreads.U):
5070 This variable conditionally defines the USE_5005THREADS symbol,
5071 and indicates that Perl should be built to use the 5.005-based
5072 threading implementation. Only valid up to 5.8.x.
5074 use64bitall (use64bits.U):
5075 This variable conditionally defines the USE_64_BIT_ALL symbol,
5076 and indicates that 64-bit integer types should be used
5077 when available. The maximal possible
5078 64-bitness is employed: LP64 or ILP64, meaning that you will
5079 be able to use more than 2 gigabytes of memory. This mode is
5080 even more binary incompatible than USE_64_BIT_INT. You may not
5081 be able to run the resulting executable in a 32-bit CPU at all or
5082 you may need at least to reboot your OS to 64-bit mode.
5084 use64bitint (use64bits.U):
5085 This variable conditionally defines the USE_64_BIT_INT symbol,
5086 and indicates that 64-bit integer types should be used
5087 when available. The minimal possible 64-bitness
5088 is employed, just enough to get 64-bit integers into Perl.
5089 This may mean using for example "long longs", while your memory
5090 may still be limited to 2 gigabytes.
5092 usecbacktrace (usebacktrace.U):
5093 This variable indicates whether we are compiling with backtrace
5096 usecrosscompile (Cross.U):
5097 This variable conditionally defines the USE_CROSS_COMPILE symbol,
5098 and indicates that Perl has been cross-compiled.
5101 This variable indicates that Perl was configured with development
5102 features enabled. This should not be done for production builds.
5105 This variable indicates if the system supports dynamic
5106 loading of some sort. See also dlsrc and dlobj.
5108 usedtrace (usedtrace.U):
5109 This variable indicates whether we are compiling with dtrace
5110 support. See also dtrace.
5112 usefaststdio (usefaststdio.U):
5113 This variable conditionally defines the USE_FAST_STDIO symbol,
5114 and indicates that Perl should be built to use 'fast stdio'.
5115 Defaults to define in Perls 5.8 and earlier, to undef later.
5117 useithreads (usethreads.U):
5118 This variable conditionally defines the USE_ITHREADS symbol,
5119 and indicates that Perl should be built to use the interpreter-based
5120 threading implementation.
5122 usekernprocpathname (usekernprocpathname.U):
5123 This variable, indicates that we can use sysctl with
5124 KERN_PROC_PATHNAME to get a full path for the executable, and hence
5125 convert $^X to an absolute path.
5127 uselargefiles (uselfs.U):
5128 This variable conditionally defines the USE_LARGE_FILES symbol,
5129 and indicates that large file interfaces should be used when
5132 uselongdouble (uselongdbl.U):
5133 This variable conditionally defines the USE_LONG_DOUBLE symbol,
5134 and indicates that long doubles should be used when available.
5136 usemallocwrap (mallocsrc.U):
5137 This variable contains y if we are wrapping malloc to prevent
5138 integer overflow during size calculations.
5140 usemorebits (usemorebits.U):
5141 This variable conditionally defines the USE_MORE_BITS symbol,
5142 and indicates that explicit 64-bit interfaces and long doubles
5143 should be used when available.
5145 usemultiplicity (usemultiplicity.U):
5146 This variable conditionally defines the MULTIPLICITY symbol,
5147 and indicates that Perl should be built to use multiplicity.
5149 usemymalloc (mallocsrc.U):
5150 This variable contains y if the malloc that comes with this package
5151 is desired over the system's version of malloc. People often include
5152 special versions of malloc for efficiency, but such versions are often
5153 less portable. See also mallocsrc and mallocobj.
5154 If this is 'y', then -lmalloc is removed from $libs.
5157 This variable contains 'true' or 'false' depending whether the
5158 nm extraction is wanted or not.
5160 usensgetexecutablepath (usensgetexecutablepath.U):
5161 This symbol, if defined, indicates that we can use _NSGetExecutablePath
5162 and realpath to get a full path for the executable, and hence convert
5163 $^X to an absolute path.
5165 useopcode (Extensions.U):
5166 This variable holds either 'true' or 'false' to indicate
5167 whether the Opcode extension should be used. The sole
5168 use for this currently is to allow an easy mechanism
5169 for users to skip the Opcode extension from the Configure
5172 useperlio (useperlio.U):
5173 This variable conditionally defines the USE_PERLIO symbol,
5174 and indicates that the PerlIO abstraction should be
5177 useposix (Extensions.U):
5178 This variable holds either 'true' or 'false' to indicate
5179 whether the POSIX extension should be used. The sole
5180 use for this currently is to allow an easy mechanism
5181 for hints files to indicate that POSIX will not compile
5182 on a particular system.
5184 usereentrant (usethreads.U):
5185 This variable conditionally defines the USE_REENTRANT_API symbol,
5186 which indicates that the thread code may try to use the various
5187 _r versions of library functions. This is only potentially
5188 meaningful if usethreads is set and is very experimental, it is
5189 not even prompted for.
5191 userelocatableinc (bin.U):
5192 This variable is set to true to indicate that perl should relocate
5193 @INC entries at runtime based on the path to the perl binary.
5194 Any @INC paths starting ".../" are relocated relative to the directory
5195 containing the perl binary, and a logical cleanup of the path is then
5196 made around the join point (removing "dir/../" pairs)
5198 useshrplib (libperl.U):
5199 This variable is set to 'true' if the user wishes
5200 to build a shared libperl, and 'false' otherwise.
5202 usesitecustomize (d_sitecustomize.U):
5203 This variable is set to true when the user requires a mechanism that
5204 allows the sysadmin to add entries to @INC at runtime. This variable
5205 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
5207 usesocks (usesocks.U):
5208 This variable conditionally defines the USE_SOCKS symbol,
5209 and indicates that Perl should be built to use SOCKS.
5211 usethreads (usethreads.U):
5212 This variable conditionally defines the USE_THREADS symbol,
5213 and indicates that Perl should be built to use threads.
5215 usevendorprefix (vendorprefix.U):
5216 This variable tells whether the vendorprefix
5217 and consequently other vendor* paths are in use.
5219 useversionedarchname (archname.U):
5220 This variable indicates whether to include the $api_versionstring
5221 as a component of the $archname.
5223 usevfork (d_vfork.U):
5224 This variable is set to true when the user accepts to use vfork.
5225 It is set to false when no vfork is available or when the user
5226 explicitly requests not to use vfork.
5229 This variable holds the path of the include files, which is
5230 usually /usr/include. It is mainly used by other Configure units.
5233 This variable is defined but not used by Configure.
5234 The value is the empty string and is not useful.
5236 uvoformat (perlxvf.U):
5237 This variable contains the format string used for printing
5238 a Perl UV as an unsigned octal integer.
5241 This variable is the size of a UV in bytes.
5244 This variable contains the C type used for Perl's UV.
5246 uvuformat (perlxvf.U):
5247 This variable contains the format string used for printing
5248 a Perl UV as an unsigned decimal integer.
5250 uvxformat (perlxvf.U):
5251 This variable contains the format string used for printing
5252 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
5254 uvXUformat (perlxvf.U):
5255 This variable contains the format string used for printing
5256 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
5258 vaproto (vaproto.U):
5259 This variable conditionally defines CAN_VAPROTO on systems supporting
5260 prototype declaration of functions with a variable number of
5261 arguments. See also prototype.
5263 vendorarch (vendorarch.U):
5264 This variable contains the value of the PERL_VENDORARCH symbol.
5265 It may have a ~ on the front.
5266 The standard distribution will put nothing in this directory.
5267 Vendors who distribute perl may wish to place their own
5268 architecture-dependent modules and extensions in this directory with
5269 MakeMaker Makefile.PL INSTALLDIRS=vendor
5270 or equivalent. See INSTALL for details.
5272 vendorarchexp (vendorarch.U):
5273 This variable is the ~name expanded version of vendorarch, so that you
5274 may use it directly in Makefiles or shell scripts.
5276 vendorbin (vendorbin.U):
5277 This variable contains the eventual value of the VENDORBIN symbol.
5278 It may have a ~ on the front.
5279 The standard distribution will put nothing in this directory.
5280 Vendors who distribute perl may wish to place additional
5281 binaries in this directory with
5282 MakeMaker Makefile.PL INSTALLDIRS=vendor
5283 or equivalent. See INSTALL for details.
5285 vendorbinexp (vendorbin.U):
5286 This variable is the ~name expanded version of vendorbin, so that you
5287 may use it directly in Makefiles or shell scripts.
5289 vendorhtml1dir (vendorhtml1dir.U):
5290 This variable contains the name of the directory for html
5291 pages. It may have a ~ on the front.
5292 The standard distribution will put nothing in this directory.
5293 Vendors who distribute perl may wish to place their own
5294 html pages in this directory with
5295 MakeMaker Makefile.PL INSTALLDIRS=vendor
5296 or equivalent. See INSTALL for details.
5298 vendorhtml1direxp (vendorhtml1dir.U):
5299 This variable is the ~name expanded version of vendorhtml1dir, so that you
5300 may use it directly in Makefiles or shell scripts.
5302 vendorhtml3dir (vendorhtml3dir.U):
5303 This variable contains the name of the directory for html
5304 library pages. It may have a ~ on the front.
5305 The standard distribution will put nothing in this directory.
5306 Vendors who distribute perl may wish to place their own
5307 html pages for modules and extensions in this directory with
5308 MakeMaker Makefile.PL INSTALLDIRS=vendor
5309 or equivalent. See INSTALL for details.
5311 vendorhtml3direxp (vendorhtml3dir.U):
5312 This variable is the ~name expanded version of vendorhtml3dir, so that you
5313 may use it directly in Makefiles or shell scripts.
5315 vendorlib (vendorlib.U):
5316 This variable contains the eventual value of the VENDORLIB symbol,
5317 which is the name of the private library for this package.
5318 The standard distribution will put nothing in this directory.
5319 Vendors who distribute perl may wish to place their own
5320 modules in this directory with
5321 MakeMaker Makefile.PL INSTALLDIRS=vendor
5322 or equivalent. See INSTALL for details.
5324 vendorlib_stem (vendorlib.U):
5325 This variable is $vendorlibexp with any trailing version-specific component
5326 removed. The elements in inc_version_list (inc_version_list.U) can
5327 be tacked onto this variable to generate a list of directories to search.
5329 vendorlibexp (vendorlib.U):
5330 This variable is the ~name expanded version of vendorlib, so that you
5331 may use it directly in Makefiles or shell scripts.
5333 vendorman1dir (vendorman1dir.U):
5334 This variable contains the name of the directory for man1
5335 pages. It may have a ~ on the front.
5336 The standard distribution will put nothing in this directory.
5337 Vendors who distribute perl may wish to place their own
5338 man1 pages in this directory with
5339 MakeMaker Makefile.PL INSTALLDIRS=vendor
5340 or equivalent. See INSTALL for details.
5342 vendorman1direxp (vendorman1dir.U):
5343 This variable is the ~name expanded version of vendorman1dir, so that you
5344 may use it directly in Makefiles or shell scripts.
5346 vendorman3dir (vendorman3dir.U):
5347 This variable contains the name of the directory for man3
5348 pages. It may have a ~ on the front.
5349 The standard distribution will put nothing in this directory.
5350 Vendors who distribute perl may wish to place their own
5351 man3 pages in this directory with
5352 MakeMaker Makefile.PL INSTALLDIRS=vendor
5353 or equivalent. See INSTALL for details.
5355 vendorman3direxp (vendorman3dir.U):
5356 This variable is the ~name expanded version of vendorman3dir, so that you
5357 may use it directly in Makefiles or shell scripts.
5359 vendorprefix (vendorprefix.U):
5360 This variable holds the full absolute path of the directory below
5361 which the vendor will install add-on packages.
5362 See INSTALL for usage and examples.
5364 vendorprefixexp (vendorprefix.U):
5365 This variable holds the full absolute path of the directory below
5366 which the vendor will install add-on packages. Derived from vendorprefix.
5368 vendorscript (vendorscript.U):
5369 This variable contains the eventual value of the VENDORSCRIPT symbol.
5370 It may have a ~ on the front.
5371 The standard distribution will put nothing in this directory.
5372 Vendors who distribute perl may wish to place additional
5373 executable scripts in this directory with
5374 MakeMaker Makefile.PL INSTALLDIRS=vendor
5375 or equivalent. See INSTALL for details.
5377 vendorscriptexp (vendorscript.U):
5378 This variable is the ~name expanded version of vendorscript, so that you
5379 may use it directly in Makefiles or shell scripts.
5381 version (patchlevel.U):
5382 The full version number of this package, such as 5.6.1 (or 5_6_1).
5383 This combines revision, patchlevel, and subversion to get the
5384 full version number, including any possible subversions.
5385 This is suitable for use as a directory name, and hence is
5386 filesystem dependent.
5388 version_patchlevel_string (patchlevel.U):
5389 This is a string combining version, subversion and
5390 perl_patchlevel (if perl_patchlevel is non-zero).
5391 It is typically something like
5392 'version 7 subversion 1' or
5393 'version 7 subversion 1 patchlevel 11224'
5394 It is computed here to avoid duplication of code in myconfig.SH
5397 versiononly (versiononly.U):
5398 If set, this symbol indicates that only the version-specific
5399 components of a perl installation should be installed.
5400 This may be useful for making a test installation of a new
5401 version without disturbing the existing installation.
5402 Setting versiononly is equivalent to setting installperl's -v option.
5403 In particular, the non-versioned scripts and programs such as
5404 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5405 (see INSTALL for a more complete list). Nor are the man
5407 Usually, this is undef.
5410 This variable is defined but not used by Configure.
5411 The value is the empty string and is not useful.
5414 This variable holds extra path (space-separated) used to find
5415 libraries on this platform, for example CPU-specific libraries
5416 (on multi-CPU platforms) may be listed here.
5419 This variable holds the name of the compiler compiler we
5420 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5423 This variable contains any additional yacc flags desired by the
5424 user. It is up to the Makefile to use this.
5427 This variable is defined but not used by Configure.
5428 The value is the empty string and is not useful.
5431 This variable is used internally by Configure to determine the
5432 full pathname (if any) of the zip program. After Configure runs,
5433 the value is reset to a plain "zip" and is not useful.