2 !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
3 This file is built by metaconfig.
5 This file contains a description of all the shell variables whose value is
6 determined by the Configure script. Variables intended for use in C
7 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
8 generates pod documentation for Config.pm from this file--please try to keep
9 the formatting regular.]
12 This variable defines the extension used for ordinary library files.
13 For unix, it is '.a'. The '.' is included. Other possible
14 values include '.lib'.
17 This variable defines the extension used for executable files.
18 DJGPP, Cygwin and OS/2 use '.exe'. Stratus VOS uses '.pm'.
19 On operating systems which do not require a specific extension
20 for executable files, this variable is empty.
23 This variable defines the extension used for object files.
24 For unix, it is '.o'. The '.' is included. Other possible
25 values include '.obj'.
28 This variable is set to 'true' if AFS (Andrew File System) is used
29 on the system, 'false' otherwise. It is possible to override this
30 with a hint value or command line option, but you'd better know
34 This variable is by default set to '/afs'. In the unlikely case
35 this is not the correct root, it is possible to override this with
36 a hint value or command line option. This will be used in subsequent
37 tests for AFSness in the configure and test process.
39 alignbytes (alignbytes.U):
40 This variable holds the number of bytes required to align a
41 double-- or a long double when applicable. Usual values are
42 2, 4 and 8. The default is eight, for safety.
44 ansi2knr (ansi2knr.U):
45 This variable is set if the user needs to run ansi2knr.
46 Currently, this is not supported, so we just abort.
48 aphostname (d_gethname.U):
49 This variable contains the command which can be used to compute the
50 host name. The command is fully qualified by its absolute path, to make
51 it safe when used by a process with super-user privileges.
53 api_revision (patchlevel.U):
54 The three variables, api_revision, api_version, and
55 api_subversion, specify the version of the oldest perl binary
56 compatible with the present perl. In a full version string
57 such as '5.6.1', api_revision is the '5'.
58 Prior to 5.5.640, the format was a floating point number,
61 perl.c:incpush() and lib/lib.pm will automatically search in
62 $sitelib/.. for older directories back to the limit specified
63 by these api_ variables. This is only useful if you have a
64 perl library directory tree structured like the default one.
65 See INSTALL for how this works. The versioned site_perl
66 directory was introduced in 5.005, so that is the lowest
67 possible value. The version list appropriate for the current
68 system is determined in inc_version_list.U.
70 XXX To do: Since compatibility can depend on compile time
71 options (such as bincompat, longlong, etc.) it should
72 (perhaps) be set by Configure, but currently it isn't.
73 Currently, we read a hard-wired value from patchlevel.h.
74 Perhaps what we ought to do is take the hard-wired value from
75 patchlevel.h but then modify it if the current Configure
76 options warrant. patchlevel.h then would use an #ifdef guard.
78 api_subversion (patchlevel.U):
79 The three variables, api_revision, api_version, and
80 api_subversion, specify the version of the oldest perl binary
81 compatible with the present perl. In a full version string
82 such as '5.6.1', api_subversion is the '1'. See api_revision for
85 api_version (patchlevel.U):
86 The three variables, api_revision, api_version, and
87 api_subversion, specify the version of the oldest perl binary
88 compatible with the present perl. In a full version string
89 such as '5.6.1', api_version is the '6'. See api_revision for
90 full details. As a special case, 5.5.0 is rendered in the
91 old-style as 5.005. (In the 5.005_0x maintenance series,
92 this was the only versioned directory in $sitelib.)
94 api_versionstring (patchlevel.U):
95 This variable combines api_revision, api_version, and
96 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
97 for use as a directory name. This is filesystem dependent.
100 This variable is used internally by Configure to determine the
101 full pathname (if any) of the ar program. After Configure runs,
102 the value is reset to a plain "ar" and is not useful.
105 This variable holds the name of the directory in which the user wants
106 to put architecture-dependent public library files for $package.
107 It is most often a local directory such as /usr/local/lib.
108 Programs using this variable must be prepared to deal
109 with filename expansion.
111 archlibexp (archlib.U):
112 This variable is the same as the archlib variable, but is
113 filename expanded at configuration time, for convenient use.
115 archname (archname.U):
116 This variable is a short name to characterize the current
117 architecture. It is used mainly to construct the default archlib.
119 archname64 (use64bits.U):
120 This variable is used for the 64-bitness part of $archname.
123 This variable defines any additional objects that must be linked
124 in with the program on this architecture. On unix, it is usually
125 empty. It is typically used to include emulations of unix calls
126 or other facilities. For perl on OS/2, for example, this would
129 asctime_r_proto (d_asctime_r.U):
130 This variable encodes the prototype of asctime_r.
131 It is zero if d_asctime_r is undef, and one of the
132 REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
136 This variable is used internally by Configure to determine the
137 full pathname (if any) of the awk program. After Configure runs,
138 the value is reset to a plain "awk" and is not useful.
141 The base revision level of this package, from the .package file.
144 This variable is defined but not used by Configure.
145 The value is the empty string and is not useful.
148 This variable holds the name of the directory in which the user wants
149 to put publicly executable images for the package in question. It
150 is most often a local directory such as /usr/local/bin. Programs using
151 this variable must be prepared to deal with ~name substitution.
154 This variable saves the result from configure if generated binaries
155 are in ELF format. Only set to defined when the test has actually
156 been performed, and the result was positive.
159 This is the same as the bin variable, but is filename expanded at
160 configuration time, for use in your makefiles.
163 This variable is used internally by Configure to determine the
164 full pathname (if any) of the bison program. After Configure runs,
165 the value is reset to a plain "bison" and is not useful.
168 This variable is used internally by Configure to determine the
169 full pathname (if any) of the byacc program. After Configure runs,
170 the value is reset to a plain "byacc" and is not useful.
172 byteorder (byteorder.U):
173 This variable holds the byte order in a UV. In the following,
174 larger digits indicate more significance. The variable byteorder
175 is either 4321 on a big-endian machine, or 1234 on a little-endian,
176 or 87654321 on a Cray ... or 3412 with weird order !
179 This variable contains the \c string if that is what causes the echo
180 command to suppress newline. Otherwise it is null. Correct usage is
181 $echo $n "prompt for a question: $c".
183 castflags (d_castneg.U):
184 This variable contains a flag that precise difficulties the
185 compiler has casting odd floating values to unsigned long:
187 1 = couldn't cast < 0
188 2 = couldn't cast >= 0x80000000
189 4 = couldn't cast in argument expression list
192 This variable is used internally by Configure to determine the
193 full pathname (if any) of the cat program. After Configure runs,
194 the value is reset to a plain "cat" and is not useful.
197 This variable holds the name of a command to execute a C compiler which
198 can resolve multiple global references that happen to have the same
199 name. Usual values are 'cc' and 'gcc'.
200 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
202 cccdlflags (dlsrc.U):
203 This variable contains any special flags that might need to be
204 passed with 'cc -c' to compile modules to be used to create a shared
205 library that will be used for dynamic loading. For hpux, this
206 should be +z. It is up to the makefile to use it.
209 This variable contains any special flags that might need to be
210 passed to cc to link with a shared library for dynamic loading.
211 It is up to the makefile to use it. For sunos 4.1, it should
215 This variable contains any additional C compiler flags desired by
216 the user. It is up to the Makefile to use this.
218 ccflags_uselargefiles (uselfs.U):
219 This variable contains the compiler flags needed by large file builds
220 and added to ccflags by hints files.
223 This can set either by hints files or by Configure. If using
224 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
225 Some platforms, however, make good use of this by storing the
226 flavor of the C compiler being used here. For example if using
227 the Sun WorkShop suite, ccname will be 'workshop'.
229 ccsymbols (Cppsym.U):
230 The variable contains the symbols defined by the C compiler alone.
231 The symbols defined by cpp or by cc when it calls cpp are not in
232 this list, see cppsymbols and cppccsymbols.
233 The list is a space-separated list of symbol=value tokens.
235 ccversion (Checkcc.U):
236 This can set either by hints files or by Configure. If using
237 a (non-gcc) vendor cc, this variable may contain a version for
241 Login name of the person who ran the Configure script and answered the
242 questions. This is used to tag both config.sh and config_h.SH.
244 cf_email (cf_email.U):
245 Electronic mail address of the person who ran Configure. This can be
246 used by units that require the user's e-mail, like MailList.U.
249 Holds the output of the "date" command when the configuration file was
250 produced. This is used to tag both config.sh and config_h.SH.
252 charbits (charsize.U):
253 This variable contains the value of the CHARBITS symbol, which
254 indicates to the C program how many bits there are in a character.
256 charsize (charsize.U):
257 This variable contains the value of the CHARSIZE symbol, which
258 indicates to the C program how many bytes there are in a character.
261 This variable is defined but not used by Configure.
262 The value is the empty string and is not useful.
265 This variable is used internally by Configure to determine the
266 full pathname (if any) of the chmod program. After Configure runs,
267 the value is reset to a plain "chmod" and is not useful.
270 This variable is defined but not used by Configure.
271 The value is the empty string and is not useful.
273 clocktype (d_times.U):
274 This variable holds the type returned by times(). It can be long,
275 or clock_t on BSD sites (in which case <sys/types.h> should be
279 This variable is used internally by Configure to determine the
280 full pathname (if any) of the comm program. After Configure runs,
281 the value is reset to a plain "comm" and is not useful.
284 This variable is defined but not used by Configure.
285 The value is the empty string and is not useful.
287 config_arg0 (Options.U):
288 This variable contains the string used to invoke the Configure
289 command, as reported by the shell in the $0 variable.
291 config_argc (Options.U):
292 This variable contains the number of command-line arguments
293 passed to Configure, as reported by the shell in the $# variable.
294 The individual arguments are stored as variables config_arg1,
297 config_args (Options.U):
298 This variable contains a single string giving the command-line
299 arguments passed to Configure. Spaces within arguments,
300 quotes, and escaped characters are not correctly preserved.
301 To reconstruct the command line, you must assemble the individual
302 command line pieces, given in config_arg[0-9]*.
304 contains (contains.U):
305 This variable holds the command to do a grep with a proper return
306 status. On most sane systems it is simply "grep". On insane systems
307 it is a grep followed by a cat followed by a test. This variable
308 is primarily for the use of other Configure units.
311 This variable is used internally by Configure to determine the
312 full pathname (if any) of the cp program. After Configure runs,
313 the value is reset to a plain "cp" and is not useful.
316 This variable is defined but not used by Configure.
317 The value is the empty string and is not useful.
320 This variable is used internally by Configure to determine the
321 full pathname (if any) of the cpp program. After Configure runs,
322 the value is reset to a plain "cpp" and is not useful.
324 cpp_stuff (cpp_stuff.U):
325 This variable contains an identification of the concatenation mechanism
326 used by the C preprocessor.
328 cppccsymbols (Cppsym.U):
329 The variable contains the symbols defined by the C compiler
330 when it calls cpp. The symbols defined by the cc alone or cpp
331 alone are not in this list, see ccsymbols and cppsymbols.
332 The list is a space-separated list of symbol=value tokens.
334 cppflags (ccflags.U):
335 This variable holds the flags that will be passed to the C pre-
336 processor. It is up to the Makefile to use it.
338 cpplast (cppstdin.U):
339 This variable has the same functionality as cppminus, only it applies
340 to cpprun and not cppstdin.
342 cppminus (cppstdin.U):
343 This variable contains the second part of the string which will invoke
344 the C preprocessor on the standard input and produce to standard
345 output. This variable will have the value "-" if cppstdin needs
346 a minus to specify standard input, otherwise the value is "".
349 This variable contains the command which will invoke a C preprocessor
350 on standard input and put the output to stdout. It is guaranteed not
351 to be a wrapper and may be a null string if no preprocessor can be
352 made directly available. This preprocessor might be different from the
353 one used by the C compiler. Don't forget to append cpplast after the
354 preprocessor options.
356 cppstdin (cppstdin.U):
357 This variable contains the command which will invoke the C
358 preprocessor on standard input and put the output to stdout.
359 It is primarily used by other Configure units that ask about
360 preprocessor symbols.
362 cppsymbols (Cppsym.U):
363 The variable contains the symbols defined by the C preprocessor
364 alone. The symbols defined by cc or by cc when it calls cpp are
365 not in this list, see ccsymbols and cppccsymbols.
366 The list is a space-separated list of symbol=value tokens.
368 crypt_r_proto (d_crypt_r.U):
369 This variable encodes the prototype of crypt_r.
370 It is zero if d_crypt_r is undef, and one of the
371 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
374 cryptlib (d_crypt.U):
375 This variable holds -lcrypt or the path to a libcrypt.a archive if
376 the crypt() function is not defined in the standard C library. It is
377 up to the Makefile to use this.
380 This variable is used internally by Configure to determine the
381 full pathname (if any) of the csh program. After Configure runs,
382 the value is reset to a plain "csh" and is not useful.
384 ctermid_r_proto (d_ctermid_r.U):
385 This variable encodes the prototype of ctermid_r.
386 It is zero if d_ctermid_r is undef, and one of the
387 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
390 ctime_r_proto (d_ctime_r.U):
391 This variable encodes the prototype of ctime_r.
392 It is zero if d_ctime_r is undef, and one of the
393 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
396 d__fwalk (d__fwalk.U):
397 This variable conditionally defines HAS__FWALK if _fwalk() is
398 available to apply a function to all the file handles.
400 d_access (d_access.U):
401 This variable conditionally defines HAS_ACCESS if the access() system
402 call is available to check for access permissions using real IDs.
404 d_accessx (d_accessx.U):
405 This variable conditionally defines the HAS_ACCESSX symbol, which
406 indicates to the C program that the accessx() routine is available.
409 This variable conditionally defines the HAS_ACOSH symbol, which
410 indicates to the C program that the acosh() routine is available.
413 This variable conditionally defines the HAS_AINTL symbol, which
414 indicates to the C program that the aintl() routine is available.
415 If copysignl is also present we can emulate modfl.
418 This variable conditionally defines the HAS_ALARM symbol, which
419 indicates to the C program that the alarm() routine is available.
421 d_archlib (archlib.U):
422 This variable conditionally defines ARCHLIB to hold the pathname
423 of architecture-dependent library files for $package. If
424 $archlib is the same as $privlib, then this is set to undef.
426 d_asctime64 (d_timefuncs64.U):
427 This variable conditionally defines the HAS_ASCTIME64 symbol, which
428 indicates to the C program that the asctime64 () routine is available.
430 d_asctime_r (d_asctime_r.U):
431 This variable conditionally defines the HAS_ASCTIME_R symbol,
432 which indicates to the C program that the asctime_r()
433 routine is available.
436 This variable conditionally defines the HAS_ASINH symbol, which
437 indicates to the C program that the asinh() routine is available.
440 This variable conditionally defines the HAS_ATANH symbol, which
441 indicates to the C program that the atanh() routine is available.
444 This variable conditionally defines the HAS_ATOLF symbol, which
445 indicates to the C program that the atolf() routine is available.
448 This variable conditionally defines the HAS_ATOLL symbol, which
449 indicates to the C program that the atoll() routine is available.
451 d_attribute_deprecated (d_attribut.U):
452 This variable conditionally defines HASATTRIBUTE_DEPRECATED, which
453 indicates that GCC can handle the attribute for marking deprecated
456 d_attribute_format (d_attribut.U):
457 This variable conditionally defines HASATTRIBUTE_FORMAT, which
458 indicates the C compiler can check for printf-like formats.
460 d_attribute_malloc (d_attribut.U):
461 This variable conditionally defines HASATTRIBUTE_MALLOC, which
462 indicates the C compiler can understand functions as having
463 malloc-like semantics.
465 d_attribute_nonnull (d_attribut.U):
466 This variable conditionally defines HASATTRIBUTE_NONNULL, which
467 indicates that the C compiler can know that certain arguments
468 must not be NULL, and will check accordingly at compile time.
470 d_attribute_noreturn (d_attribut.U):
471 This variable conditionally defines HASATTRIBUTE_NORETURN, which
472 indicates that the C compiler can know that certain functions
473 are guaranteed never to return.
475 d_attribute_pure (d_attribut.U):
476 This variable conditionally defines HASATTRIBUTE_PURE, which
477 indicates that the C compiler can know that certain functions
478 are "pure" functions, meaning that they have no side effects, and
479 only rely on function input and/or global data for their results.
481 d_attribute_unused (d_attribut.U):
482 This variable conditionally defines HASATTRIBUTE_UNUSED, which
483 indicates that the C compiler can know that certain variables
484 and arguments may not always be used, and to not throw warnings
485 if they don't get used.
487 d_attribute_warn_unused_result (d_attribut.U):
488 This variable conditionally defines
489 HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
490 compiler can know that certain functions have a return values
491 that must not be ignored, such as malloc() or open().
493 d_backtrace (d_backtrace.U):
494 This variable conditionally defines the HAS_BACKTRACE symbol, which
495 indicates to the C program that the backtrace() routine is available
496 to get a stack trace.
499 This variable conditionally defines the HAS_BCMP symbol if
500 the bcmp() routine is available to compare strings.
503 This variable conditionally defines the HAS_BCOPY symbol if
504 the bcopy() routine is available to copy strings.
507 This symbol conditionally defines the symbol BSD when running on a
510 d_bsdgetpgrp (d_getpgrp.U):
511 This variable conditionally defines USE_BSD_GETPGRP if
512 getpgrp needs one arguments whereas USG one needs none.
514 d_bsdsetpgrp (d_setpgrp.U):
515 This variable conditionally defines USE_BSD_SETPGRP if
516 setpgrp needs two arguments whereas USG one needs none.
517 See also d_setpgid for a POSIX interface.
519 d_builtin_choose_expr (d_builtin.U):
520 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
521 indicates that the compiler supports __builtin_choose_expr(x,y,z).
522 This built-in function is analogous to the "x?y:z" operator in C,
523 except that the expression returned has its type unaltered by
524 promotion rules. Also, the built-in function does not evaluate
525 the expression that was not chosen.
527 d_builtin_expect (d_builtin.U):
528 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
529 that the compiler supports __builtin_expect(exp,c). You may use
530 __builtin_expect to provide the compiler with branch prediction
534 This variable conditionally defines the HAS_BZERO symbol if
535 the bzero() routine is available to set memory to 0.
537 d_c99_variadic_macros (d_c99_variadic.U):
538 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
539 symbol, which indicates to the C program that C99 variadic macros
542 d_casti32 (d_casti32.U):
543 This variable conditionally defines CASTI32, which indicates
544 whether the C compiler can cast large floats to 32-bit ints.
546 d_castneg (d_castneg.U):
547 This variable conditionally defines CASTNEG, which indicates
548 whether the C compiler can cast negative float to unsigned.
551 This variable conditionally defines the HAS_CBRT symbol, which
552 indicates to the C program that the cbrt() (cube root) function
555 d_charvspr (d_vprintf.U):
556 This variable conditionally defines CHARVSPRINTF if this system
557 has vsprintf returning type (char*). The trend seems to be to
558 declare it as "int vsprintf()".
561 This variable conditionally defines the HAS_CHOWN symbol, which
562 indicates to the C program that the chown() routine is available.
564 d_chroot (d_chroot.U):
565 This variable conditionally defines the HAS_CHROOT symbol, which
566 indicates to the C program that the chroot() routine is available.
568 d_chsize (d_chsize.U):
569 This variable conditionally defines the CHSIZE symbol, which
570 indicates to the C program that the chsize() routine is available
571 to truncate files. You might need a -lx to get this routine.
574 This variable conditionally defines the HAS_CLASS symbol, which
575 indicates to the C program that the class() routine is available.
577 d_clearenv (d_clearenv.U):
578 This variable conditionally defines the HAS_CLEARENV symbol, which
579 indicates to the C program that the clearenv () routine is available.
581 d_closedir (d_closedir.U):
582 This variable conditionally defines HAS_CLOSEDIR if closedir() is
585 d_cmsghdr_s (d_cmsghdr_s.U):
586 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
587 which indicates that the struct cmsghdr is supported.
590 This variable conditionally defines the HASCONST symbol, which
591 indicates to the C program that this C compiler knows about the
594 d_copysign (d_copysign.U):
595 This variable conditionally defines the HAS_COPYSIGN symbol, which
596 indicates to the C program that the copysign() routine is available.
598 d_copysignl (d_copysignl.U):
599 This variable conditionally defines the HAS_COPYSIGNL symbol, which
600 indicates to the C program that the copysignl() routine is available.
601 If aintl is also present we can emulate modfl.
603 d_cplusplus (d_cplusplus.U):
604 This variable conditionally defines the USE_CPLUSPLUS symbol, which
605 indicates that a C++ compiler was used to compiled Perl and will be
606 used to compile extensions.
609 This variable conditionally defines the CRYPT symbol, which
610 indicates to the C program that the crypt() routine is available
611 to encrypt passwords and the like.
613 d_crypt_r (d_crypt_r.U):
614 This variable conditionally defines the HAS_CRYPT_R symbol,
615 which indicates to the C program that the crypt_r()
616 routine is available.
619 This variable conditionally defines the CSH symbol, which
620 indicates to the C program that the C-shell exists.
622 d_ctermid (d_ctermid.U):
623 This variable conditionally defines CTERMID if ctermid() is
624 available to generate filename for terminal.
626 d_ctermid_r (d_ctermid_r.U):
627 This variable conditionally defines the HAS_CTERMID_R symbol,
628 which indicates to the C program that the ctermid_r()
629 routine is available.
631 d_ctime64 (d_timefuncs64.U):
632 This variable conditionally defines the HAS_CTIME64 symbol, which
633 indicates to the C program that the ctime64 () routine is available.
635 d_ctime_r (d_ctime_r.U):
636 This variable conditionally defines the HAS_CTIME_R symbol,
637 which indicates to the C program that the ctime_r()
638 routine is available.
640 d_cuserid (d_cuserid.U):
641 This variable conditionally defines the HAS_CUSERID symbol, which
642 indicates to the C program that the cuserid() routine is available
643 to get character login names.
645 d_dbl_dig (d_dbl_dig.U):
646 This variable conditionally defines d_dbl_dig if this system's
647 header files provide DBL_DIG, which is the number of significant
648 digits in a double precision number.
650 d_dbminitproto (d_dbminitproto.U):
651 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
652 which indicates to the C program that the system provides
653 a prototype for the dbminit() function. Otherwise, it is
654 up to the program to supply one.
656 d_difftime (d_difftime.U):
657 This variable conditionally defines the HAS_DIFFTIME symbol, which
658 indicates to the C program that the difftime() routine is available.
660 d_difftime64 (d_timefuncs64.U):
661 This variable conditionally defines the HAS_DIFFTIME64 symbol, which
662 indicates to the C program that the difftime64 () routine is available.
664 d_dir_dd_fd (d_dir_dd_fd.U):
665 This variable conditionally defines the HAS_DIR_DD_FD symbol, which
666 indicates that the DIR directory stream type contains a member
667 variable called dd_fd.
670 This variable conditionally defines the HAS_DIRFD constant,
671 which indicates to the C program that dirfd() is available
672 to return the file descriptor of a directory stream.
674 d_dirnamlen (i_dirent.U):
675 This variable conditionally defines DIRNAMLEN, which indicates
676 to the C program that the length of directory entry names is
677 provided by a d_namelen field.
679 d_dladdr (d_dladdr.U):
680 This variable conditionally defines the HAS_DLADDR symbol, which
681 indicates to the C program that the dladdr() routine is available
682 to get a stack trace.
684 d_dlerror (d_dlerror.U):
685 This variable conditionally defines the HAS_DLERROR symbol, which
686 indicates to the C program that the dlerror() routine is available.
688 d_dlopen (d_dlopen.U):
689 This variable conditionally defines the HAS_DLOPEN symbol, which
690 indicates to the C program that the dlopen() routine is available.
692 d_dlsymun (d_dlsymun.U):
693 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
694 indicates that we need to prepend an underscore to the symbol
695 name before calling dlsym().
697 d_double_has_inf (infnan.U):
698 This variable conditionally defines the symbol DOUBLE_HAS_INF
699 which indicates that the double type has an infinity.
701 d_double_has_nan (infnan.U):
702 This variable conditionally defines the symbol DOUBLE_HAS_INF
703 which indicates that the double type has a not-a-number.
705 d_double_has_negative_zero (infnan.U):
706 This variable conditionally defines the symbol DOUBLE_HAS_NEGATIVE_ZERO
707 which indicates that the double type has a negative zero.
709 d_double_has_subnormals (infnan.U):
710 This variable conditionally defines the symbol DOUBLE_HAS_SUBNORMALS
711 which indicates that the double type has subnormals (denormals).
713 d_double_style_cray (longdblfio.U):
714 This variable conditionally defines the symbol DOUBLE_STYLE_CRAY
715 which indicates that the double is the 64-bit CRAY mainframe format.
717 d_double_style_ibm (longdblfio.U):
718 This variable conditionally defines the symbol DOUBLE_STYLE_IBM,
719 which indicates that the double is the 64-bit IBM mainframe format.
721 d_double_style_ieee (longdblfio.U):
722 This variable conditionally defines the symbol DOUBLE_STYLE_IEEE,
723 which indicates that the double is the 64-bit IEEE 754.
725 d_double_style_vax (longdblfio.U):
726 This variable conditionally defines the symbol DOUBLE_STYLE_VAX,
727 which indicates that the double is the 64-bit VAX format D or G.
729 d_dosuid (d_dosuid.U):
730 This variable conditionally defines the symbol DOSUID, which
731 tells the C program that it should insert setuid emulation code
732 on hosts which have setuid #! scripts disabled.
734 d_drand48_r (d_drand48_r.U):
735 This variable conditionally defines the HAS_DRAND48_R symbol,
736 which indicates to the C program that the drand48_r()
737 routine is available.
739 d_drand48proto (d_drand48proto.U):
740 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
741 which indicates to the C program that the system provides
742 a prototype for the drand48() function. Otherwise, it is
743 up to the program to supply one.
746 This variable conditionally defines HAS_DUP2 if dup2() is
747 available to duplicate file descriptors.
749 d_duplocale (d_newlocale.U):
750 This variable conditionally defines the HAS_DUPLOCALE symbol, which
751 indicates to the C program that the duplocale() routine is available
752 to duplicate a locale object.
754 d_eaccess (d_eaccess.U):
755 This variable conditionally defines the HAS_EACCESS symbol, which
756 indicates to the C program that the eaccess() routine is available.
758 d_endgrent (d_endgrent.U):
759 This variable conditionally defines the HAS_ENDGRENT symbol, which
760 indicates to the C program that the endgrent() routine is available
761 for sequential access of the group database.
763 d_endgrent_r (d_endgrent_r.U):
764 This variable conditionally defines the HAS_ENDGRENT_R symbol,
765 which indicates to the C program that the endgrent_r()
766 routine is available.
768 d_endhent (d_endhent.U):
769 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
770 available to close whatever was being used for host queries.
772 d_endhostent_r (d_endhostent_r.U):
773 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
774 which indicates to the C program that the endhostent_r()
775 routine is available.
777 d_endnent (d_endnent.U):
778 This variable conditionally defines HAS_ENDNETENT if endnetent() is
779 available to close whatever was being used for network queries.
781 d_endnetent_r (d_endnetent_r.U):
782 This variable conditionally defines the HAS_ENDNETENT_R symbol,
783 which indicates to the C program that the endnetent_r()
784 routine is available.
786 d_endpent (d_endpent.U):
787 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
788 available to close whatever was being used for protocol queries.
790 d_endprotoent_r (d_endprotoent_r.U):
791 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
792 which indicates to the C program that the endprotoent_r()
793 routine is available.
795 d_endpwent (d_endpwent.U):
796 This variable conditionally defines the HAS_ENDPWENT symbol, which
797 indicates to the C program that the endpwent() routine is available
798 for sequential access of the passwd database.
800 d_endpwent_r (d_endpwent_r.U):
801 This variable conditionally defines the HAS_ENDPWENT_R symbol,
802 which indicates to the C program that the endpwent_r()
803 routine is available.
805 d_endsent (d_endsent.U):
806 This variable conditionally defines HAS_ENDSERVENT if endservent() is
807 available to close whatever was being used for service queries.
809 d_endservent_r (d_endservent_r.U):
810 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
811 which indicates to the C program that the endservent_r()
812 routine is available.
814 d_eofnblk (nblock_io.U):
815 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
816 when reading from a non-blocking I/O source.
819 This variable conditionally defines the HAS_ERF symbol, which
820 indicates to the C program that the erf() routine is available.
823 This variable conditionally defines the HAS_ERFC symbol, which
824 indicates to the C program that the erfc() routine is available.
827 This variable conditionally defines the symbols EUNICE and VAX, which
828 alerts the C program that it must deal with idiosyncrasies of VMS.
831 This variable conditionally defines the HAS_EXP2 symbol, which
832 indicates to the C program that the exp2() routine is available.
835 This variable conditionally defines the HAS_EXPM1 symbol, which
836 indicates to the C program that the expm1() routine is available.
838 d_faststdio (d_faststdio.U):
839 This variable conditionally defines the HAS_FAST_STDIO symbol,
840 which indicates to the C program that the "fast stdio" is available
841 to manipulate the stdio buffers directly.
843 d_fchdir (d_fchdir.U):
844 This variable conditionally defines the HAS_FCHDIR symbol, which
845 indicates to the C program that the fchdir() routine is available.
847 d_fchmod (d_fchmod.U):
848 This variable conditionally defines the HAS_FCHMOD symbol, which
849 indicates to the C program that the fchmod() routine is available
850 to change mode of opened files.
852 d_fchown (d_fchown.U):
853 This variable conditionally defines the HAS_FCHOWN symbol, which
854 indicates to the C program that the fchown() routine is available
855 to change ownership of opened files.
858 This variable conditionally defines the HAS_FCNTL symbol, and indicates
859 whether the fcntl() function exists
861 d_fcntl_can_lock (d_fcntl_can_lock.U):
862 This variable conditionally defines the FCNTL_CAN_LOCK symbol
863 and indicates whether file locking with fcntl() works.
865 d_fd_macros (d_fd_set.U):
866 This variable contains the eventual value of the HAS_FD_MACROS symbol,
867 which indicates if your C compiler knows about the macros which
868 manipulate an fd_set.
870 d_fd_set (d_fd_set.U):
871 This variable contains the eventual value of the HAS_FD_SET symbol,
872 which indicates if your C compiler knows about the fd_set typedef.
874 d_fdclose (d_fdclose.U):
875 This variable conditionally defines the HAS_FDCLOSE symbol, which
876 indicates to the C program that the fdclose() routine is available.
879 This variable conditionally defines the HAS_FDIM symbol, which
880 indicates to the C program that the fdim() routine is available.
882 d_fds_bits (d_fd_set.U):
883 This variable contains the eventual value of the HAS_FDS_BITS symbol,
884 which indicates if your fd_set typedef contains the fds_bits member.
885 If you have an fd_set typedef, but the dweebs who installed it did
886 a half-fast job and neglected to provide the macros to manipulate
887 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
889 d_fegetround (d_fegetround.U):
890 This variable conditionally defines HAS_FEGETROUND if fegetround() is
891 available to get the floating point rounding mode.
893 d_fgetpos (d_fgetpos.U):
894 This variable conditionally defines HAS_FGETPOS if fgetpos() is
895 available to get the file position indicator.
897 d_finite (d_finite.U):
898 This variable conditionally defines the HAS_FINITE symbol, which
899 indicates to the C program that the finite() routine is available.
901 d_finitel (d_finitel.U):
902 This variable conditionally defines the HAS_FINITEL symbol, which
903 indicates to the C program that the finitel() routine is available.
905 d_flexfnam (d_flexfnam.U):
906 This variable conditionally defines the FLEXFILENAMES symbol, which
907 indicates that the system supports filenames longer than 14 characters.
910 This variable conditionally defines HAS_FLOCK if flock() is
911 available to do file locking.
913 d_flockproto (d_flockproto.U):
914 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
915 which indicates to the C program that the system provides
916 a prototype for the flock() function. Otherwise, it is
917 up to the program to supply one.
920 This variable conditionally defines the HAS_FMA symbol, which
921 indicates to the C program that the fma() routine is available.
924 This variable conditionally defines the HAS_FMAX symbol, which
925 indicates to the C program that the fmax() routine is available.
928 This variable conditionally defines the HAS_FMIN symbol, which
929 indicates to the C program that the fmin() routine is available.
932 This variable conditionally defines the HAS_FORK symbol, which
933 indicates to the C program that the fork() routine is available.
935 d_fp_class (d_fp_class.U):
936 This variable conditionally defines the HAS_FP_CLASS symbol, which
937 indicates to the C program that the fp_class() routine is available.
939 d_fp_classify (d_fpclassify.U):
940 This variable conditionally defines the HAS_FP_CLASSIFY symbol, which
941 indicates to the C program that the fp_classify() routine is available.
943 d_fp_classl (d_fp_classl.U):
944 This variable conditionally defines the HAS_FP_CLASSL symbol, which
945 indicates to the C program that the fp_classl() routine is available.
947 d_fpathconf (d_pathconf.U):
948 This variable conditionally defines the HAS_FPATHCONF symbol, which
949 indicates to the C program that the pathconf() routine is available
950 to determine file-system related limits and options associated
951 with a given open file descriptor.
953 d_fpclass (d_fpclass.U):
954 This variable conditionally defines the HAS_FPCLASS symbol, which
955 indicates to the C program that the fpclass() routine is available.
957 d_fpclassify (d_fpclassify.U):
958 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
959 indicates to the C program that the fpclassify() routine is available.
961 d_fpclassl (d_fpclassl.U):
962 This variable conditionally defines the HAS_FPCLASSL symbol, which
963 indicates to the C program that the fpclassl() routine is available.
965 d_fpgetround (d_fpgetround.U):
966 This variable conditionally defines HAS_FPGETROUND if fpgetround()
967 is available to get the floating point rounding mode.
969 d_fpos64_t (d_fpos64_t.U):
970 This symbol will be defined if the C compiler supports fpos64_t.
972 d_freelocale (d_newlocale.U):
973 This variable conditionally defines the HAS_FREELOCALE symbol, which
974 indicates to the C program that the freelocale() routine is available
975 to deallocates the resources associated with a locale object.
977 d_frexpl (d_frexpl.U):
978 This variable conditionally defines the HAS_FREXPL symbol, which
979 indicates to the C program that the frexpl() routine is available.
981 d_fs_data_s (d_fs_data_s.U):
982 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
983 which indicates that the struct fs_data is supported.
985 d_fseeko (d_fseeko.U):
986 This variable conditionally defines the HAS_FSEEKO symbol, which
987 indicates to the C program that the fseeko() routine is available.
989 d_fsetpos (d_fsetpos.U):
990 This variable conditionally defines HAS_FSETPOS if fsetpos() is
991 available to set the file position indicator.
993 d_fstatfs (d_fstatfs.U):
994 This variable conditionally defines the HAS_FSTATFS symbol, which
995 indicates to the C program that the fstatfs() routine is available.
997 d_fstatvfs (d_statvfs.U):
998 This variable conditionally defines the HAS_FSTATVFS symbol, which
999 indicates to the C program that the fstatvfs() routine is available.
1001 d_fsync (d_fsync.U):
1002 This variable conditionally defines the HAS_FSYNC symbol, which
1003 indicates to the C program that the fsync() routine is available.
1005 d_ftello (d_ftello.U):
1006 This variable conditionally defines the HAS_FTELLO symbol, which
1007 indicates to the C program that the ftello() routine is available.
1009 d_ftime (d_ftime.U):
1010 This variable conditionally defines the HAS_FTIME symbol, which indicates
1011 that the ftime() routine exists. The ftime() routine is basically
1012 a sub-second accuracy clock.
1014 d_futimes (d_futimes.U):
1015 This variable conditionally defines the HAS_FUTIMES symbol, which
1016 indicates to the C program that the futimes() routine is available.
1018 d_gai_strerror (d_gai_strerror.U):
1019 This variable conditionally defines the HAS_GAI_STRERROR symbol
1020 if the gai_strerror() routine is available and can be used to
1021 translate error codes returned by getaddrinfo() into human
1024 d_Gconvert (d_gconvert.U):
1025 This variable holds what Gconvert is defined as to convert
1026 floating point numbers into strings. By default, Configure
1027 sets this macro to use the first of gconvert, gcvt, or sprintf
1028 that pass sprintf-%g-like behavior tests. If perl is using
1029 long doubles, the macro uses the first of the following
1030 functions that pass Configure's tests: qgcvt, sprintf (if
1031 Configure knows how to make sprintf format long doubles--see
1032 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
1033 The gconvert_preference and gconvert_ld_preference variables
1034 can be used to alter Configure's preferences, for doubles and
1035 long doubles, respectively. If present, they contain a
1036 space-separated list of one or more of the above function
1037 names in the order they should be tried.
1039 d_Gconvert may be set to override Configure with a platform-
1040 specific function. If this function expects a double, a
1041 different value may need to be set by the uselongdouble.cbu
1042 call-back unit so that long doubles can be formatted without
1045 d_gdbm_ndbm_h_uses_prototypes (i_ndbm.U):
1046 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1047 which indicates that the gdbm-ndbm.h include file uses real ANSI C
1048 prototypes instead of K&R style function declarations. K&R style
1049 declarations are unsupported in C++, so the include file requires
1050 special handling when using a C++ compiler and this variable is
1051 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1052 to get the same information for alternative ndbm.h include files.
1054 d_gdbmndbm_h_uses_prototypes (i_ndbm.U):
1055 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1056 which indicates that the gdbm/ndbm.h include file uses real ANSI C
1057 prototypes instead of K&R style function declarations. K&R style
1058 declarations are unsupported in C++, so the include file requires
1059 special handling when using a C++ compiler and this variable is
1060 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1061 to get the same information for alternative ndbm.h include files.
1063 d_getaddrinfo (d_getaddrinfo.U):
1064 This variable conditionally defines the HAS_GETADDRINFO symbol,
1065 which indicates to the C program that the getaddrinfo() function
1068 d_getcwd (d_getcwd.U):
1069 This variable conditionally defines the HAS_GETCWD symbol, which
1070 indicates to the C program that the getcwd() routine is available
1071 to get the current working directory.
1073 d_getespwnam (d_getespwnam.U):
1074 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
1075 available to retrieve enhanced (shadow) password entries by name.
1077 d_getfsstat (d_getfsstat.U):
1078 This variable conditionally defines the HAS_GETFSSTAT symbol, which
1079 indicates to the C program that the getfsstat() routine is available.
1081 d_getgrent (d_getgrent.U):
1082 This variable conditionally defines the HAS_GETGRENT symbol, which
1083 indicates to the C program that the getgrent() routine is available
1084 for sequential access of the group database.
1086 d_getgrent_r (d_getgrent_r.U):
1087 This variable conditionally defines the HAS_GETGRENT_R symbol,
1088 which indicates to the C program that the getgrent_r()
1089 routine is available.
1091 d_getgrgid_r (d_getgrgid_r.U):
1092 This variable conditionally defines the HAS_GETGRGID_R symbol,
1093 which indicates to the C program that the getgrgid_r()
1094 routine is available.
1096 d_getgrnam_r (d_getgrnam_r.U):
1097 This variable conditionally defines the HAS_GETGRNAM_R symbol,
1098 which indicates to the C program that the getgrnam_r()
1099 routine is available.
1101 d_getgrps (d_getgrps.U):
1102 This variable conditionally defines the HAS_GETGROUPS symbol, which
1103 indicates to the C program that the getgroups() routine is available
1104 to get the list of process groups.
1106 d_gethbyaddr (d_gethbyad.U):
1107 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
1108 indicates to the C program that the gethostbyaddr() routine is available
1109 to look up hosts by their IP addresses.
1111 d_gethbyname (d_gethbynm.U):
1112 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
1113 indicates to the C program that the gethostbyname() routine is available
1114 to look up host names in some data base or other.
1116 d_gethent (d_gethent.U):
1117 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
1118 available to look up host names in some data base or another.
1120 d_gethname (d_gethname.U):
1121 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
1122 indicates to the C program that the gethostname() routine may be
1123 used to derive the host name.
1125 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
1126 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
1127 which indicates to the C program that the gethostbyaddr_r()
1128 routine is available.
1130 d_gethostbyname_r (d_gethostbyname_r.U):
1131 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
1132 which indicates to the C program that the gethostbyname_r()
1133 routine is available.
1135 d_gethostent_r (d_gethostent_r.U):
1136 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
1137 which indicates to the C program that the gethostent_r()
1138 routine is available.
1140 d_gethostprotos (d_gethostprotos.U):
1141 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
1142 which indicates to the C program that <netdb.h> supplies
1143 prototypes for the various gethost*() functions.
1144 See also netdbtype.U for probing for various netdb types.
1146 d_getitimer (d_getitimer.U):
1147 This variable conditionally defines the HAS_GETITIMER symbol, which
1148 indicates to the C program that the getitimer() routine is available.
1150 d_getlogin (d_getlogin.U):
1151 This variable conditionally defines the HAS_GETLOGIN symbol, which
1152 indicates to the C program that the getlogin() routine is available
1153 to get the login name.
1155 d_getlogin_r (d_getlogin_r.U):
1156 This variable conditionally defines the HAS_GETLOGIN_R symbol,
1157 which indicates to the C program that the getlogin_r()
1158 routine is available.
1160 d_getmnt (d_getmnt.U):
1161 This variable conditionally defines the HAS_GETMNT symbol, which
1162 indicates to the C program that the getmnt() routine is available
1163 to retrieve one or more mount info blocks by filename.
1165 d_getmntent (d_getmntent.U):
1166 This variable conditionally defines the HAS_GETMNTENT symbol, which
1167 indicates to the C program that the getmntent() routine is available
1168 to iterate through mounted files to get their mount info.
1170 d_getnameinfo (d_getnameinfo.U):
1171 This variable conditionally defines the HAS_GETNAMEINFO symbol,
1172 which indicates to the C program that the getnameinfo() function
1175 d_getnbyaddr (d_getnbyad.U):
1176 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
1177 indicates to the C program that the getnetbyaddr() routine is available
1178 to look up networks by their IP addresses.
1180 d_getnbyname (d_getnbynm.U):
1181 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
1182 indicates to the C program that the getnetbyname() routine is available
1183 to look up networks by their names.
1185 d_getnent (d_getnent.U):
1186 This variable conditionally defines HAS_GETNETENT if getnetent() is
1187 available to look up network names in some data base or another.
1189 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
1190 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
1191 which indicates to the C program that the getnetbyaddr_r()
1192 routine is available.
1194 d_getnetbyname_r (d_getnetbyname_r.U):
1195 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
1196 which indicates to the C program that the getnetbyname_r()
1197 routine is available.
1199 d_getnetent_r (d_getnetent_r.U):
1200 This variable conditionally defines the HAS_GETNETENT_R symbol,
1201 which indicates to the C program that the getnetent_r()
1202 routine is available.
1204 d_getnetprotos (d_getnetprotos.U):
1205 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1206 which indicates to the C program that <netdb.h> supplies
1207 prototypes for the various getnet*() functions.
1208 See also netdbtype.U for probing for various netdb types.
1210 d_getpagsz (d_getpagsz.U):
1211 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1212 is available to get the system page size.
1214 d_getpbyname (d_getprotby.U):
1215 This variable conditionally defines the HAS_GETPROTOBYNAME
1216 symbol, which indicates to the C program that the
1217 getprotobyname() routine is available to look up protocols
1220 d_getpbynumber (d_getprotby.U):
1221 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1222 symbol, which indicates to the C program that the
1223 getprotobynumber() routine is available to look up protocols
1226 d_getpent (d_getpent.U):
1227 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1228 available to look up protocols in some data base or another.
1230 d_getpgid (d_getpgid.U):
1231 This variable conditionally defines the HAS_GETPGID symbol, which
1232 indicates to the C program that the getpgid(pid) function
1233 is available to get the process group id.
1235 d_getpgrp (d_getpgrp.U):
1236 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1237 available to get the current process group.
1239 d_getpgrp2 (d_getpgrp2.U):
1240 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1241 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1242 is available to get the current process group.
1244 d_getppid (d_getppid.U):
1245 This variable conditionally defines the HAS_GETPPID symbol, which
1246 indicates to the C program that the getppid() routine is available
1247 to get the parent process ID.
1249 d_getprior (d_getprior.U):
1250 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1251 is available to get a process's priority.
1253 d_getprotobyname_r (d_getprotobyname_r.U):
1254 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1255 which indicates to the C program that the getprotobyname_r()
1256 routine is available.
1258 d_getprotobynumber_r (d_getprotobynumber_r.U):
1259 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1260 which indicates to the C program that the getprotobynumber_r()
1261 routine is available.
1263 d_getprotoent_r (d_getprotoent_r.U):
1264 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1265 which indicates to the C program that the getprotoent_r()
1266 routine is available.
1268 d_getprotoprotos (d_getprotoprotos.U):
1269 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1270 which indicates to the C program that <netdb.h> supplies
1271 prototypes for the various getproto*() functions.
1272 See also netdbtype.U for probing for various netdb types.
1274 d_getprpwnam (d_getprpwnam.U):
1275 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1276 available to retrieve protected (shadow) password entries by name.
1278 d_getpwent (d_getpwent.U):
1279 This variable conditionally defines the HAS_GETPWENT symbol, which
1280 indicates to the C program that the getpwent() routine is available
1281 for sequential access of the passwd database.
1283 d_getpwent_r (d_getpwent_r.U):
1284 This variable conditionally defines the HAS_GETPWENT_R symbol,
1285 which indicates to the C program that the getpwent_r()
1286 routine is available.
1288 d_getpwnam_r (d_getpwnam_r.U):
1289 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1290 which indicates to the C program that the getpwnam_r()
1291 routine is available.
1293 d_getpwuid_r (d_getpwuid_r.U):
1294 This variable conditionally defines the HAS_GETPWUID_R symbol,
1295 which indicates to the C program that the getpwuid_r()
1296 routine is available.
1298 d_getsbyname (d_getsrvby.U):
1299 This variable conditionally defines the HAS_GETSERVBYNAME
1300 symbol, which indicates to the C program that the
1301 getservbyname() routine is available to look up services
1304 d_getsbyport (d_getsrvby.U):
1305 This variable conditionally defines the HAS_GETSERVBYPORT
1306 symbol, which indicates to the C program that the
1307 getservbyport() routine is available to look up services
1310 d_getsent (d_getsent.U):
1311 This variable conditionally defines HAS_GETSERVENT if getservent() is
1312 available to look up network services in some data base or another.
1314 d_getservbyname_r (d_getservbyname_r.U):
1315 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1316 which indicates to the C program that the getservbyname_r()
1317 routine is available.
1319 d_getservbyport_r (d_getservbyport_r.U):
1320 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1321 which indicates to the C program that the getservbyport_r()
1322 routine is available.
1324 d_getservent_r (d_getservent_r.U):
1325 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1326 which indicates to the C program that the getservent_r()
1327 routine is available.
1329 d_getservprotos (d_getservprotos.U):
1330 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1331 which indicates to the C program that <netdb.h> supplies
1332 prototypes for the various getserv*() functions.
1333 See also netdbtype.U for probing for various netdb types.
1335 d_getspnam (d_getspnam.U):
1336 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1337 available to retrieve SysV shadow password entries by name.
1339 d_getspnam_r (d_getspnam_r.U):
1340 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1341 which indicates to the C program that the getspnam_r()
1342 routine is available.
1344 d_gettimeod (d_ftime.U):
1345 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1346 indicates that the gettimeofday() system call exists (to obtain a
1347 sub-second accuracy clock). You should probably include <sys/resource.h>.
1349 d_gmtime64 (d_timefuncs64.U):
1350 This variable conditionally defines the HAS_GMTIME64 symbol, which
1351 indicates to the C program that the gmtime64 () routine is available.
1353 d_gmtime_r (d_gmtime_r.U):
1354 This variable conditionally defines the HAS_GMTIME_R symbol,
1355 which indicates to the C program that the gmtime_r()
1356 routine is available.
1358 d_gnulibc (d_gnulibc.U):
1359 Defined if we're dealing with the GNU C Library.
1361 d_grpasswd (i_grp.U):
1362 This variable conditionally defines GRPASSWD, which indicates
1363 that struct group in <grp.h> contains gr_passwd.
1365 d_hasmntopt (d_hasmntopt.U):
1366 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1367 indicates to the C program that the hasmntopt() routine is available
1368 to query the mount options of file systems.
1370 d_htonl (d_htonl.U):
1371 This variable conditionally defines HAS_HTONL if htonl() and its
1372 friends are available to do network order byte swapping.
1374 d_hypot (d_hypot.U):
1375 This variable conditionally defines HAS_HYPOT if hypot is available
1376 for numerically stable hypotenuse function.
1378 d_ilogb (d_ilogb.U):
1379 This variable conditionally defines the HAS_ILOGB symbol, which
1380 indicates to the C program that the ilogb() routine is available
1381 for extracting the exponent of double x as a signed integer.
1383 d_ilogbl (d_ilogbl.U):
1384 This variable conditionally defines the HAS_ILOGBL symbol, which
1385 indicates to the C program that the ilogbl() routine is available
1386 for extracting the exponent of long double x as a signed integer.
1387 If scalbnl is also present we can emulate frexpl.
1389 d_inc_version_list (inc_version_list.U):
1390 This variable conditionally defines PERL_INC_VERSION_LIST.
1391 It is set to undef when PERL_INC_VERSION_LIST is empty.
1393 d_index (d_strchr.U):
1394 This variable conditionally defines HAS_INDEX if index() and
1395 rindex() are available for string searching.
1397 d_inetaton (d_inetaton.U):
1398 This variable conditionally defines the HAS_INET_ATON symbol, which
1399 indicates to the C program that the inet_aton() function is available
1400 to parse IP address "dotted-quad" strings.
1402 d_inetntop (d_inetntop.U):
1403 This variable conditionally defines the HAS_INETNTOP symbol,
1404 which indicates to the C program that the inet_ntop() function
1407 d_inetpton (d_inetpton.U):
1408 This variable conditionally defines the HAS_INETPTON symbol,
1409 which indicates to the C program that the inet_pton() function
1412 d_int64_t (d_int64_t.U):
1413 This symbol will be defined if the C compiler supports int64_t.
1415 d_ip_mreq (d_socket.U):
1416 This variable conditionally defines the HAS_IP_MREQ symbol, which
1417 indicates the availability of a struct ip_mreq.
1419 d_ip_mreq_source (d_socket.U):
1420 This variable conditionally defines the HAS_IP_MREQ_SOURCE symbol,
1421 which indicates the availability of a struct ip_mreq_source.
1423 d_ipv6_mreq (d_socket.U):
1424 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
1425 indicates the availability of a struct ipv6_mreq.
1427 d_ipv6_mreq_source (d_socket.U):
1428 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE symbol,
1429 which indicates the availability of a struct ipv6_mreq_source.
1431 d_isascii (d_isascii.U):
1432 This variable conditionally defines the HAS_ISASCII constant,
1433 which indicates to the C program that isascii() is available.
1435 d_isblank (d_isblank.U):
1436 This variable conditionally defines the HAS_ISBLANK constant,
1437 which indicates to the C program that isblank() is available.
1439 d_isfinite (d_isfinite.U):
1440 This variable conditionally defines the HAS_ISFINITE symbol, which
1441 indicates to the C program that the isfinite() routine is available.
1443 d_isfinitel (d_isfinitel.U):
1444 This variable conditionally defines the HAS_ISFINITEL symbol, which
1445 indicates to the C program that the isfinitel() routine is available.
1447 d_isinf (d_isinf.U):
1448 This variable conditionally defines the HAS_ISINF symbol, which
1449 indicates to the C program that the isinf() routine is available.
1451 d_isinfl (d_isinfl.U):
1452 This variable conditionally defines the HAS_ISINFL symbol, which
1453 indicates to the C program that the isinfl() routine is available.
1455 d_isless (d_isless.U):
1456 This variable conditionally defines the HAS_ISLESS symbol, which
1457 indicates to the C program that the isless() routine is available.
1459 d_isnan (d_isnan.U):
1460 This variable conditionally defines the HAS_ISNAN symbol, which
1461 indicates to the C program that the isnan() routine is available.
1463 d_isnanl (d_isnanl.U):
1464 This variable conditionally defines the HAS_ISNANL symbol, which
1465 indicates to the C program that the isnanl() routine is available.
1467 d_isnormal (d_isnormal.U):
1468 This variable conditionally defines the HAS_ISNORMAL symbol, which
1469 indicates to the C program that the isnormal() routine is available.
1472 This variable conditionally defines the HAS_J0 symbol, which
1473 indicates to the C program that the j0() routine is available.
1476 This variable conditionally defines the HAS_J0L symbol, which
1477 indicates to the C program that the j0l() routine is available.
1479 d_killpg (d_killpg.U):
1480 This variable conditionally defines the HAS_KILLPG symbol, which
1481 indicates to the C program that the killpg() routine is available
1482 to kill process groups.
1484 d_lc_monetary_2008 (d_lc_monetary_2008.U):
1485 This variable conditionally defines HAS_LC_MONETARY_2008 if libc
1486 has the international currency locale rules from POSIX
1489 d_lchown (d_lchown.U):
1490 This variable conditionally defines the HAS_LCHOWN symbol, which
1491 indicates to the C program that the lchown() routine is available
1492 to operate on a symbolic link (instead of following the link).
1494 d_ldbl_dig (d_ldbl_dig.U):
1495 This variable conditionally defines d_ldbl_dig if this system's
1496 header files provide LDBL_DIG, which is the number of significant
1497 digits in a long double precision number.
1499 d_ldexpl (d_longdbl.U):
1500 This variable conditionally defines the HAS_LDEXPL symbol, which
1501 indicates to the C program that the ldexpl() routine is available.
1503 d_lgamma (d_lgamma.U):
1504 This variable conditionally defines the HAS_LGAMMA symbol, which
1505 indicates to the C program that the lgamma() routine is available
1506 for the log gamma function. See also d_tgamma and d_lgamma_r.
1508 d_lgamma_r (d_lgamma_r.U):
1509 This variable conditionally defines the HAS_LGAMMA_R symbol, which
1510 indicates to the C program that the lgamma_r() routine is available
1511 for the log gamma function, without using the global signgam variable.
1513 d_libm_lib_version (d_libm_lib_version.U):
1514 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1515 which indicates to the C program that math.h defines _LIB_VERSION
1516 being available in libm
1518 d_libname_unique (so.U):
1519 This variable is defined if the target system insists on unique
1520 basenames for shared library files. This is currently true on Android,
1521 false everywhere else we know of.
1522 Defaults to 'undef'.
1525 This variable conditionally defines HAS_LINK if link() is
1526 available to create hard links.
1528 d_llrint (d_llrint.U):
1529 This variable conditionally defines the HAS_LLRINT symbol, which
1530 indicates to the C program that the llrint() routine is available
1531 to return the long long value closest to a double (according
1532 to the current rounding mode).
1534 d_llrintl (d_llrintl.U):
1535 This variable conditionally defines the HAS_LLRINTL symbol, which
1536 indicates to the C program that the llrintl() routine is available
1537 to return the long long value closest to a long double (according
1538 to the current rounding mode).
1540 d_llround (d_llround.U):
1541 This variable conditionally defines the HAS_LLROUND symbol, which
1542 indicates to the C program that the llround() routine is available
1543 to return the long long value nearest to x.
1545 d_llroundl (d_llroundl.U):
1546 This variable conditionally defines the HAS_LLROUNDL symbol, which
1547 indicates to the C program that the llroundl() routine is available
1548 to return the long long value nearest to x away from zero.
1550 d_localtime64 (d_timefuncs64.U):
1551 This variable conditionally defines the HAS_LOCALTIME64 symbol, which
1552 indicates to the C program that the localtime64 () routine is available.
1554 d_localtime_r (d_localtime_r.U):
1555 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1556 which indicates to the C program that the localtime_r()
1557 routine is available.
1559 d_localtime_r_needs_tzset (d_localtime_r.U):
1560 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1561 symbol, which makes us call tzset before localtime_r()
1563 d_locconv (d_locconv.U):
1564 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1565 available for numeric and monetary formatting conventions.
1567 d_lockf (d_lockf.U):
1568 This variable conditionally defines HAS_LOCKF if lockf() is
1569 available to do file locking.
1571 d_log1p (d_log1p.U):
1572 This variable conditionally defines the HAS_LOG1P symbol, which
1573 indicates to the C program that the logp1() routine is available
1574 to compute log(1 + x) for values of x close to zero.
1577 This variable conditionally defines the HAS_LOG2 symbol, which
1578 indicates to the C program that the log2() routine is available
1579 to compute log base two.
1582 This variable conditionally defines the HAS_LOGB symbol, which
1583 indicates to the C program that the logb() routine is available
1584 to extract the exponent of x.
1586 d_longdbl (d_longdbl.U):
1587 This variable conditionally defines HAS_LONG_DOUBLE if
1588 the long double type is supported.
1590 d_long_double_style_ieee (d_longdbl.U):
1591 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE
1592 if the long double is any of the IEEE 754 style long doubles:
1593 LONG_DOUBLE_STYLE_IEEE_STD, LONG_DOUBLE_STYLE_IEEE_EXTENDED,
1594 LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE.
1596 d_long_double_style_ieee_doubledouble (d_longdbl.U):
1597 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE
1598 if the long double is the 128-bit IEEE 754 double-double.
1600 d_long_double_style_ieee_extended (d_longdbl.U):
1601 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_EXTENDED
1602 if the long double is the 80-bit IEEE 754 extended precision.
1603 Note that despite the 'extended' this is less than the 'std',
1604 since thisis an extension of the double precision.
1606 d_long_double_style_ieee_std (d_longdbl.U):
1607 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_STD
1608 if the long double is the 128-bit IEEE 754.
1610 d_long_double_style_vax (d_longdbl.U):
1611 This variable conditionally defines LONG_DOUBLE_STYLE_VAX
1612 if the long double is the 128-bit VAX format H.
1614 d_longlong (d_longlong.U):
1615 This variable conditionally defines HAS_LONG_LONG if
1616 the long long type is supported.
1618 d_lrint (d_lrint.U):
1619 This variable conditionally defines the HAS_LRINT symbol, which
1620 indicates to the C program that the lrint() routine is available
1621 to return the integral value closest to a double (according
1622 to the current rounding mode).
1624 d_lrintl (d_lrintl.U):
1625 This variable conditionally defines the HAS_LRINTL symbol, which
1626 indicates to the C program that the lrintl() routine is available
1627 to return the integral value closest to a long double (according
1628 to the current rounding mode).
1630 d_lround (d_lround.U):
1631 This variable conditionally defines the HAS_LROUND symbol, which
1632 indicates to the C program that the lround() routine is available
1633 to return the integral value nearest to x.
1635 d_lroundl (d_lroundl.U):
1636 This variable conditionally defines the HAS_LROUNDL symbol, which
1637 indicates to the C program that the lroundl() routine is available
1638 to return the integral value nearest to x away from zero.
1640 d_lseekproto (d_lseekproto.U):
1641 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1642 which indicates to the C program that the system provides
1643 a prototype for the lseek() function. Otherwise, it is
1644 up to the program to supply one.
1646 d_lstat (d_lstat.U):
1647 This variable conditionally defines HAS_LSTAT if lstat() is
1648 available to do file stats on symbolic links.
1650 d_madvise (d_madvise.U):
1651 This variable conditionally defines HAS_MADVISE if madvise() is
1652 available to map a file into memory.
1654 d_malloc_good_size (d_malloc_size.U):
1655 This symbol, if defined, indicates that the malloc_good_size
1656 routine is available for use.
1658 d_malloc_size (d_malloc_size.U):
1659 This symbol, if defined, indicates that the malloc_size
1660 routine is available for use.
1662 d_mblen (d_mblen.U):
1663 This variable conditionally defines the HAS_MBLEN symbol, which
1664 indicates to the C program that the mblen() routine is available
1665 to find the number of bytes in a multibye character.
1667 d_mbstowcs (d_mbstowcs.U):
1668 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1669 indicates to the C program that the mbstowcs() routine is available
1670 to convert a multibyte string into a wide character string.
1672 d_mbtowc (d_mbtowc.U):
1673 This variable conditionally defines the HAS_MBTOWC symbol, which
1674 indicates to the C program that the mbtowc() routine is available
1675 to convert multibyte to a wide character.
1677 d_memchr (d_memchr.U):
1678 This variable conditionally defines the HAS_MEMCHR symbol, which
1679 indicates to the C program that the memchr() routine is available
1680 to locate characters within a C string.
1682 d_memcmp (d_memcmp.U):
1683 This variable conditionally defines the HAS_MEMCMP symbol, which
1684 indicates to the C program that the memcmp() routine is available
1685 to compare blocks of memory.
1687 d_memcpy (d_memcpy.U):
1688 This variable conditionally defines the HAS_MEMCPY symbol, which
1689 indicates to the C program that the memcpy() routine is available
1690 to copy blocks of memory.
1692 d_memmem (d_memmem.U):
1693 This variable conditionally defines the HAS_MEMMEM symbol, which
1694 indicates to the C program that the memmem() routine is available
1695 to return a pointer to the start of the first occurance of a
1696 substring in a memory area (or NULL if not found).
1698 d_memmove (d_memmove.U):
1699 This variable conditionally defines the HAS_MEMMOVE symbol, which
1700 indicates to the C program that the memmove() routine is available
1701 to copy potentially overlapping blocks of memory.
1703 d_memset (d_memset.U):
1704 This variable conditionally defines the HAS_MEMSET symbol, which
1705 indicates to the C program that the memset() routine is available
1706 to set blocks of memory.
1708 d_mkdir (d_mkdir.U):
1709 This variable conditionally defines the HAS_MKDIR symbol, which
1710 indicates to the C program that the mkdir() routine is available
1711 to create directories..
1713 d_mkdtemp (d_mkdtemp.U):
1714 This variable conditionally defines the HAS_MKDTEMP symbol, which
1715 indicates to the C program that the mkdtemp() routine is available
1716 to exclusively create a uniquely named temporary directory.
1718 d_mkfifo (d_mkfifo.U):
1719 This variable conditionally defines the HAS_MKFIFO symbol, which
1720 indicates to the C program that the mkfifo() routine is available.
1722 d_mkstemp (d_mkstemp.U):
1723 This variable conditionally defines the HAS_MKSTEMP symbol, which
1724 indicates to the C program that the mkstemp() routine is available
1725 to exclusively create and open a uniquely named temporary file.
1727 d_mkstemps (d_mkstemps.U):
1728 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1729 indicates to the C program that the mkstemps() routine is available
1730 to exclusively create and open a uniquely named (with a suffix)
1733 d_mktime (d_mktime.U):
1734 This variable conditionally defines the HAS_MKTIME symbol, which
1735 indicates to the C program that the mktime() routine is available.
1737 d_mktime64 (d_timefuncs64.U):
1738 This variable conditionally defines the HAS_MKTIME64 symbol, which
1739 indicates to the C program that the mktime64 () routine is available.
1742 This variable conditionally defines HAS_MMAP if mmap() is
1743 available to map a file into memory.
1745 d_modfl (d_modfl.U):
1746 This variable conditionally defines the HAS_MODFL symbol, which
1747 indicates to the C program that the modfl() routine is available.
1749 d_modflproto (d_modfl.U):
1750 This symbol, if defined, indicates that the system provides
1751 a prototype for the modfl() function. Otherwise, it is up
1752 to the program to supply one. C99 says it should be
1753 long double modfl(long double, long double *);
1755 d_mprotect (d_mprotect.U):
1756 This variable conditionally defines HAS_MPROTECT if mprotect() is
1757 available to modify the access protection of a memory mapped file.
1760 This variable conditionally defines the HAS_MSG symbol, which
1761 indicates that the entire msg*(2) library is present.
1763 d_msg_ctrunc (d_socket.U):
1764 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1765 which indicates that the MSG_CTRUNC is available. #ifdef is
1766 not enough because it may be an enum, glibc has been known to do this.
1768 d_msg_dontroute (d_socket.U):
1769 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1770 which indicates that the MSG_DONTROUTE is available. #ifdef is
1771 not enough because it may be an enum, glibc has been known to do this.
1773 d_msg_oob (d_socket.U):
1774 This variable conditionally defines the HAS_MSG_OOB symbol,
1775 which indicates that the MSG_OOB is available. #ifdef is
1776 not enough because it may be an enum, glibc has been known to do this.
1778 d_msg_peek (d_socket.U):
1779 This variable conditionally defines the HAS_MSG_PEEK symbol,
1780 which indicates that the MSG_PEEK is available. #ifdef is
1781 not enough because it may be an enum, glibc has been known to do this.
1783 d_msg_proxy (d_socket.U):
1784 This variable conditionally defines the HAS_MSG_PROXY symbol,
1785 which indicates that the MSG_PROXY is available. #ifdef is
1786 not enough because it may be an enum, glibc has been known to do this.
1788 d_msgctl (d_msgctl.U):
1789 This variable conditionally defines the HAS_MSGCTL symbol, which
1790 indicates to the C program that the msgctl() routine is available.
1792 d_msgget (d_msgget.U):
1793 This variable conditionally defines the HAS_MSGGET symbol, which
1794 indicates to the C program that the msgget() routine is available.
1796 d_msghdr_s (d_msghdr_s.U):
1797 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1798 which indicates that the struct msghdr is supported.
1800 d_msgrcv (d_msgrcv.U):
1801 This variable conditionally defines the HAS_MSGRCV symbol, which
1802 indicates to the C program that the msgrcv() routine is available.
1804 d_msgsnd (d_msgsnd.U):
1805 This variable conditionally defines the HAS_MSGSND symbol, which
1806 indicates to the C program that the msgsnd() routine is available.
1808 d_msync (d_msync.U):
1809 This variable conditionally defines HAS_MSYNC if msync() is
1810 available to synchronize a mapped file.
1812 d_munmap (d_munmap.U):
1813 This variable conditionally defines HAS_MUNMAP if munmap() is
1814 available to unmap a region mapped by mmap().
1816 d_mymalloc (mallocsrc.U):
1817 This variable conditionally defines MYMALLOC in case other parts
1818 of the source want to take special action if MYMALLOC is used.
1819 This may include different sorts of profiling or error detection.
1822 This variable conditionally defines HAS_NAN if nan() is
1823 available to generate NaN.
1826 This variable conditionally defines the HAS_NDBM symbol, which
1827 indicates that both the ndbm.h include file and an appropriate ndbm
1828 library exist. Consult the different i_*ndbm variables
1829 to find out the actual include location. Sometimes, a system has the
1830 header file but not the library. This variable will only be set if
1831 the system has both.
1833 d_ndbm_h_uses_prototypes (i_ndbm.U):
1834 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1835 which indicates that the ndbm.h include file uses real ANSI C
1836 prototypes instead of K&R style function declarations. K&R style
1837 declarations are unsupported in C++, so the include file requires
1838 special handling when using a C++ compiler and this variable is
1839 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1840 to get the same information for alternative ndbm.h include files.
1842 d_nearbyint (d_nearbyint.U):
1843 This variable conditionally defines HAS_NEARBYINT if nearbyint()
1844 is available to return the integral value closest to (according to
1845 the current rounding mode) to x.
1847 d_newlocale (d_newlocale.U):
1848 This variable conditionally defines the HAS_NEWLOCALE symbol, which
1849 indicates to the C program that the newlocale() routine is available
1850 to return a new locale object or modify an existing locale object.
1852 d_nextafter (d_nextafter.U):
1853 This variable conditionally defines HAS_NEXTAFTER if nextafter()
1854 is available to return the next machine representable double from
1857 d_nexttoward (d_nexttoward.U):
1858 This variable conditionally defines HAS_NEXTTOWARD if nexttoward()
1859 is available to return the next machine representable long double from
1863 This variable conditionally defines the HAS_NICE symbol, which
1864 indicates to the C program that the nice() routine is available.
1866 d_nl_langinfo (d_nl_langinfo.U):
1867 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1868 indicates to the C program that the nl_langinfo() routine is available.
1870 d_nv_preserves_uv (perlxv.U):
1871 This variable indicates whether a variable of type nvtype
1872 can preserve all the bits a variable of type uvtype.
1874 d_nv_zero_is_allbits_zero (perlxv.U):
1875 This variable indicates whether a variable of type nvtype
1876 stores 0.0 in memory as all bits zero.
1878 d_off64_t (d_off64_t.U):
1879 This symbol will be defined if the C compiler supports off64_t.
1881 d_old_pthread_create_joinable (d_pthrattrj.U):
1882 This variable conditionally defines pthread_create_joinable.
1883 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1885 d_oldpthreads (usethreads.U):
1886 This variable conditionally defines the OLD_PTHREADS_API symbol,
1887 and indicates that Perl should be built to use the old
1888 draft POSIX threads API. This is only potentially meaningful if
1891 d_oldsock (d_socket.U):
1892 This variable conditionally defines the OLDSOCKET symbol, which
1893 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1895 d_open3 (d_open3.U):
1896 This variable conditionally defines the HAS_OPEN3 manifest constant,
1897 which indicates to the C program that the 3 argument version of
1898 the open(2) function is available.
1900 d_pathconf (d_pathconf.U):
1901 This variable conditionally defines the HAS_PATHCONF symbol, which
1902 indicates to the C program that the pathconf() routine is available
1903 to determine file-system related limits and options associated
1904 with a given filename.
1906 d_pause (d_pause.U):
1907 This variable conditionally defines the HAS_PAUSE symbol, which
1908 indicates to the C program that the pause() routine is available
1909 to suspend a process until a signal is received.
1911 d_perl_otherlibdirs (otherlibdirs.U):
1912 This variable conditionally defines PERL_OTHERLIBDIRS, which
1913 contains a colon-separated set of paths for the perl binary to
1914 include in @INC. See also otherlibdirs.
1916 d_phostname (d_gethname.U):
1917 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1918 contains the shell command which, when fed to popen(), may be
1919 used to derive the host name.
1922 This variable conditionally defines the HAS_PIPE symbol, which
1923 indicates to the C program that the pipe() routine is available
1924 to create an inter-process channel.
1927 This variable conditionally defines the HAS_POLL symbol, which
1928 indicates to the C program that the poll() routine is available
1929 to poll active file descriptors.
1931 d_portable (d_portable.U):
1932 This variable conditionally defines the PORTABLE symbol, which
1933 indicates to the C program that it should not assume that it is
1934 running on the machine it was compiled on.
1936 d_prctl (d_prctl.U):
1937 This variable conditionally defines the HAS_PRCTL symbol, which
1938 indicates to the C program that the prctl() routine is available.
1939 Note that there are at least two prctl variants: Linux and Irix.
1940 While they are somewhat similar, they are incompatible.
1942 d_prctl_set_name (d_prctl.U):
1943 This variable conditionally defines the HAS_PRCTL_SET_NAME symbol,
1944 which indicates to the C program that the prctl() routine supports
1945 the PR_SET_NAME option.
1947 d_PRId64 (quadfio.U):
1948 This variable conditionally defines the PERL_PRId64 symbol, which
1949 indicates that stdio has a symbol to print 64-bit decimal numbers.
1951 d_PRIeldbl (longdblfio.U):
1952 This variable conditionally defines the PERL_PRIfldbl symbol, which
1953 indicates that stdio has a symbol to print long doubles.
1955 d_PRIEUldbl (longdblfio.U):
1956 This variable conditionally defines the PERL_PRIfldbl symbol, which
1957 indicates that stdio has a symbol to print long doubles.
1958 The 'U' in the name is to separate this from d_PRIeldbl so that even
1959 case-blind systems can see the difference.
1961 d_PRIfldbl (longdblfio.U):
1962 This variable conditionally defines the PERL_PRIfldbl symbol, which
1963 indicates that stdio has a symbol to print long doubles.
1965 d_PRIFUldbl (longdblfio.U):
1966 This variable conditionally defines the PERL_PRIfldbl symbol, which
1967 indicates that stdio has a symbol to print long doubles.
1968 The 'U' in the name is to separate this from d_PRIfldbl so that even
1969 case-blind systems can see the difference.
1971 d_PRIgldbl (longdblfio.U):
1972 This variable conditionally defines the PERL_PRIfldbl symbol, which
1973 indicates that stdio has a symbol to print long doubles.
1975 d_PRIGUldbl (longdblfio.U):
1976 This variable conditionally defines the PERL_PRIfldbl symbol, which
1977 indicates that stdio has a symbol to print long doubles.
1978 The 'U' in the name is to separate this from d_PRIgldbl so that even
1979 case-blind systems can see the difference.
1981 d_PRIi64 (quadfio.U):
1982 This variable conditionally defines the PERL_PRIi64 symbol, which
1983 indicates that stdio has a symbol to print 64-bit decimal numbers.
1985 d_printf_format_null (d_attribut.U):
1986 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
1987 indicates the C compiler allows printf-like formats to be null.
1989 d_PRIo64 (quadfio.U):
1990 This variable conditionally defines the PERL_PRIo64 symbol, which
1991 indicates that stdio has a symbol to print 64-bit octal numbers.
1993 d_PRIu64 (quadfio.U):
1994 This variable conditionally defines the PERL_PRIu64 symbol, which
1995 indicates that stdio has a symbol to print 64-bit unsigned decimal
1998 d_PRIx64 (quadfio.U):
1999 This variable conditionally defines the PERL_PRIx64 symbol, which
2000 indicates that stdio has a symbol to print 64-bit hexadecimal numbers.
2002 d_PRIXU64 (quadfio.U):
2003 This variable conditionally defines the PERL_PRIXU64 symbol, which
2004 indicates that stdio has a symbol to print 64-bit hExADECimAl numbers.
2005 The 'U' in the name is to separate this from d_PRIx64 so that even
2006 case-blind systems can see the difference.
2008 d_procselfexe (d_procselfexe.U):
2009 Defined if $procselfexe is symlink to the absolute
2010 pathname of the executing program.
2012 d_pseudofork (d_vfork.U):
2013 This variable conditionally defines the HAS_PSEUDOFORK symbol,
2014 which indicates that an emulation of the fork routine is available.
2016 d_pthread_atfork (d_pthread_atfork.U):
2017 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
2018 which indicates to the C program that the pthread_atfork()
2019 routine is available.
2021 d_pthread_attr_setscope (d_pthread_attr_ss.U):
2022 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
2023 pthread_attr_setscope() is available to set the contention scope
2024 attribute of a thread attribute object.
2026 d_pthread_yield (d_pthread_y.U):
2027 This variable conditionally defines the HAS_PTHREAD_YIELD
2028 symbol if the pthread_yield routine is available to yield
2029 the execution of the current thread.
2031 d_ptrdiff_t (d_ptrdiff_t.U):
2032 This symbol will be defined if the C compiler supports ptrdiff_t.
2035 This variable conditionally defines PWAGE, which indicates
2036 that struct passwd contains pw_age.
2038 d_pwchange (i_pwd.U):
2039 This variable conditionally defines PWCHANGE, which indicates
2040 that struct passwd contains pw_change.
2042 d_pwclass (i_pwd.U):
2043 This variable conditionally defines PWCLASS, which indicates
2044 that struct passwd contains pw_class.
2046 d_pwcomment (i_pwd.U):
2047 This variable conditionally defines PWCOMMENT, which indicates
2048 that struct passwd contains pw_comment.
2050 d_pwexpire (i_pwd.U):
2051 This variable conditionally defines PWEXPIRE, which indicates
2052 that struct passwd contains pw_expire.
2054 d_pwgecos (i_pwd.U):
2055 This variable conditionally defines PWGECOS, which indicates
2056 that struct passwd contains pw_gecos.
2058 d_pwpasswd (i_pwd.U):
2059 This variable conditionally defines PWPASSWD, which indicates
2060 that struct passwd contains pw_passwd.
2062 d_pwquota (i_pwd.U):
2063 This variable conditionally defines PWQUOTA, which indicates
2064 that struct passwd contains pw_quota.
2066 d_qgcvt (d_qgcvt.U):
2067 This variable conditionally defines the HAS_QGCVT symbol, which
2068 indicates to the C program that the qgcvt() routine is available.
2070 d_quad (quadtype.U):
2071 This variable, if defined, tells that there's a 64-bit integer type,
2074 d_querylocale (d_newlocale.U):
2075 This variable conditionally defines the HAS_QUERYLOCALE symbol, which
2076 indicates to the C program that the querylocale() routine is available
2077 to return the name of the locale for a category mask.
2079 d_random_r (d_random_r.U):
2080 This variable conditionally defines the HAS_RANDOM_R symbol,
2081 which indicates to the C program that the random_r()
2082 routine is available.
2084 d_re_comp (d_regcmp.U):
2085 This variable conditionally defines the HAS_RECOMP symbol, which
2086 indicates to the C program that the re_comp() routine is available
2087 for regular patern matching (usally on BSD). If so, it is likely that
2090 d_readdir (d_readdir.U):
2091 This variable conditionally defines HAS_READDIR if readdir() is
2092 available to read directory entries.
2094 d_readdir64_r (d_readdir64_r.U):
2095 This variable conditionally defines the HAS_READDIR64_R symbol,
2096 which indicates to the C program that the readdir64_r()
2097 routine is available.
2099 d_readdir_r (d_readdir_r.U):
2100 This variable conditionally defines the HAS_READDIR_R symbol,
2101 which indicates to the C program that the readdir_r()
2102 routine is available.
2104 d_readlink (d_readlink.U):
2105 This variable conditionally defines the HAS_READLINK symbol, which
2106 indicates to the C program that the readlink() routine is available
2107 to read the value of a symbolic link.
2109 d_readv (d_readv.U):
2110 This variable conditionally defines the HAS_READV symbol, which
2111 indicates to the C program that the readv() routine is available.
2113 d_recvmsg (d_recvmsg.U):
2114 This variable conditionally defines the HAS_RECVMSG symbol, which
2115 indicates to the C program that the recvmsg() routine is available.
2117 d_regcmp (d_regcmp.U):
2118 This variable conditionally defines the HAS_REGCMP symbol, which
2119 indicates to the C program that the regcmp() routine is available
2120 for regular patern matching (usally on System V).
2122 d_regcomp (d_regcmp.U):
2123 This variable conditionally defines the HAS_REGCOMP symbol, which
2124 indicates to the C program that the regcomp() routine is available
2125 for regular patern matching (usally on POSIX.2 conforming systems).
2127 d_remainder (d_remainder.U):
2128 This variable conditionally defines the HAS_REMAINDER symbol, which
2129 indicates to the C program that the remainder() routine is available.
2131 d_remquo (d_remquo.U):
2132 This variable conditionally defines the HAS_REMQUO symbol, which
2133 indicates to the C program that the remquo() routine is available.
2135 d_rename (d_rename.U):
2136 This variable conditionally defines the HAS_RENAME symbol, which
2137 indicates to the C program that the rename() routine is available
2140 d_rewinddir (d_readdir.U):
2141 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
2145 This variable conditionally defines the HAS_RINT symbol, which
2146 indicates to the C program that the rint() routine is available.
2148 d_rmdir (d_rmdir.U):
2149 This variable conditionally defines HAS_RMDIR if rmdir() is
2150 available to remove directories.
2152 d_round (d_round.U):
2153 This variable conditionally defines the HAS_ROUND symbol, which
2154 indicates to the C program that the round() routine is available.
2156 d_safebcpy (d_safebcpy.U):
2157 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
2158 the bcopy() routine can do overlapping copies. Normally, you
2159 should probably use memmove().
2161 d_safemcpy (d_safemcpy.U):
2162 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
2163 the memcpy() routine can do overlapping copies.
2164 For overlapping copies, memmove() should be used, if available.
2166 d_sanemcmp (d_sanemcmp.U):
2167 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
2168 the memcpy() routine is available and can be used to compare relative
2169 magnitudes of chars with their high bits set.
2171 d_sbrkproto (d_sbrkproto.U):
2172 This variable conditionally defines the HAS_SBRK_PROTO symbol,
2173 which indicates to the C program that the system provides
2174 a prototype for the sbrk() function. Otherwise, it is
2175 up to the program to supply one.
2177 d_scalbn (d_scalbn.U):
2178 This variable conditionally defines the HAS_SCALBN symbol, which
2179 indicates to the C program that the scalbn() routine is available.
2181 d_scalbnl (d_scalbnl.U):
2182 This variable conditionally defines the HAS_SCALBNL symbol, which
2183 indicates to the C program that the scalbnl() routine is available.
2184 If ilogbl is also present we can emulate frexpl.
2186 d_sched_yield (d_pthread_y.U):
2187 This variable conditionally defines the HAS_SCHED_YIELD
2188 symbol if the sched_yield routine is available to yield
2189 the execution of the current thread.
2191 d_scm_rights (d_socket.U):
2192 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
2193 which indicates that the SCM_RIGHTS is available. #ifdef is
2194 not enough because it may be an enum, glibc has been known to do this.
2196 d_SCNfldbl (longdblfio.U):
2197 This variable conditionally defines the PERL_PRIfldbl symbol, which
2198 indicates that stdio has a symbol to scan long doubles.
2200 d_seekdir (d_readdir.U):
2201 This variable conditionally defines HAS_SEEKDIR if seekdir() is
2204 d_select (d_select.U):
2205 This variable conditionally defines HAS_SELECT if select() is
2206 available to select active file descriptors. A <sys/time.h>
2207 inclusion may be necessary for the timeout field.
2210 This variable conditionally defines the HAS_SEM symbol, which
2211 indicates that the entire sem*(2) library is present.
2213 d_semctl (d_semctl.U):
2214 This variable conditionally defines the HAS_SEMCTL symbol, which
2215 indicates to the C program that the semctl() routine is available.
2217 d_semctl_semid_ds (d_union_semun.U):
2218 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
2219 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
2221 d_semctl_semun (d_union_semun.U):
2222 This variable conditionally defines USE_SEMCTL_SEMUN, which
2223 indicates that union semun is to be used for semctl IPC_STAT.
2225 d_semget (d_semget.U):
2226 This variable conditionally defines the HAS_SEMGET symbol, which
2227 indicates to the C program that the semget() routine is available.
2229 d_semop (d_semop.U):
2230 This variable conditionally defines the HAS_SEMOP symbol, which
2231 indicates to the C program that the semop() routine is available.
2233 d_sendmsg (d_sendmsg.U):
2234 This variable conditionally defines the HAS_SENDMSG symbol, which
2235 indicates to the C program that the sendmsg() routine is available.
2237 d_setegid (d_setegid.U):
2238 This variable conditionally defines the HAS_SETEGID symbol, which
2239 indicates to the C program that the setegid() routine is available
2240 to change the effective gid of the current program.
2242 d_seteuid (d_seteuid.U):
2243 This variable conditionally defines the HAS_SETEUID symbol, which
2244 indicates to the C program that the seteuid() routine is available
2245 to change the effective uid of the current program.
2247 d_setgrent (d_setgrent.U):
2248 This variable conditionally defines the HAS_SETGRENT symbol, which
2249 indicates to the C program that the setgrent() routine is available
2250 for initializing sequential access to the group database.
2252 d_setgrent_r (d_setgrent_r.U):
2253 This variable conditionally defines the HAS_SETGRENT_R symbol,
2254 which indicates to the C program that the setgrent_r()
2255 routine is available.
2257 d_setgrps (d_setgrps.U):
2258 This variable conditionally defines the HAS_SETGROUPS symbol, which
2259 indicates to the C program that the setgroups() routine is available
2260 to set the list of process groups.
2262 d_sethent (d_sethent.U):
2263 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
2266 d_sethostent_r (d_sethostent_r.U):
2267 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
2268 which indicates to the C program that the sethostent_r()
2269 routine is available.
2271 d_setitimer (d_setitimer.U):
2272 This variable conditionally defines the HAS_SETITIMER symbol, which
2273 indicates to the C program that the setitimer() routine is available.
2275 d_setlinebuf (d_setlnbuf.U):
2276 This variable conditionally defines the HAS_SETLINEBUF symbol, which
2277 indicates to the C program that the setlinebuf() routine is available
2278 to change stderr or stdout from block-buffered or unbuffered to a
2281 d_setlocale (d_setlocale.U):
2282 This variable conditionally defines HAS_SETLOCALE if setlocale() is
2283 available to handle locale-specific ctype implementations.
2285 d_setlocale_r (d_setlocale_r.U):
2286 This variable conditionally defines the HAS_SETLOCALE_R symbol,
2287 which indicates to the C program that the setlocale_r()
2288 routine is available.
2290 d_setnent (d_setnent.U):
2291 This variable conditionally defines HAS_SETNETENT if setnetent() is
2294 d_setnetent_r (d_setnetent_r.U):
2295 This variable conditionally defines the HAS_SETNETENT_R symbol,
2296 which indicates to the C program that the setnetent_r()
2297 routine is available.
2299 d_setpent (d_setpent.U):
2300 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
2303 d_setpgid (d_setpgid.U):
2304 This variable conditionally defines the HAS_SETPGID symbol if the
2305 setpgid(pid, gpid) function is available to set process group ID.
2307 d_setpgrp (d_setpgrp.U):
2308 This variable conditionally defines HAS_SETPGRP if setpgrp() is
2309 available to set the current process group.
2311 d_setpgrp2 (d_setpgrp2.U):
2312 This variable conditionally defines the HAS_SETPGRP2 symbol, which
2313 indicates to the C program that the setpgrp2() (as in DG/UX) routine
2314 is available to set the current process group.
2316 d_setprior (d_setprior.U):
2317 This variable conditionally defines HAS_SETPRIORITY if setpriority()
2318 is available to set a process's priority.
2320 d_setproctitle (d_setproctitle.U):
2321 This variable conditionally defines the HAS_SETPROCTITLE symbol,
2322 which indicates to the C program that the setproctitle() routine
2325 d_setprotoent_r (d_setprotoent_r.U):
2326 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
2327 which indicates to the C program that the setprotoent_r()
2328 routine is available.
2330 d_setpwent (d_setpwent.U):
2331 This variable conditionally defines the HAS_SETPWENT symbol, which
2332 indicates to the C program that the setpwent() routine is available
2333 for initializing sequential access to the passwd database.
2335 d_setpwent_r (d_setpwent_r.U):
2336 This variable conditionally defines the HAS_SETPWENT_R symbol,
2337 which indicates to the C program that the setpwent_r()
2338 routine is available.
2340 d_setregid (d_setregid.U):
2341 This variable conditionally defines HAS_SETREGID if setregid() is
2342 available to change the real and effective gid of the current
2345 d_setresgid (d_setregid.U):
2346 This variable conditionally defines HAS_SETRESGID if setresgid() is
2347 available to change the real, effective and saved gid of the current
2350 d_setresuid (d_setreuid.U):
2351 This variable conditionally defines HAS_SETREUID if setresuid() is
2352 available to change the real, effective and saved uid of the current
2355 d_setreuid (d_setreuid.U):
2356 This variable conditionally defines HAS_SETREUID if setreuid() is
2357 available to change the real and effective uid of the current
2360 d_setrgid (d_setrgid.U):
2361 This variable conditionally defines the HAS_SETRGID symbol, which
2362 indicates to the C program that the setrgid() routine is available
2363 to change the real gid of the current program.
2365 d_setruid (d_setruid.U):
2366 This variable conditionally defines the HAS_SETRUID symbol, which
2367 indicates to the C program that the setruid() routine is available
2368 to change the real uid of the current program.
2370 d_setsent (d_setsent.U):
2371 This variable conditionally defines HAS_SETSERVENT if setservent() is
2374 d_setservent_r (d_setservent_r.U):
2375 This variable conditionally defines the HAS_SETSERVENT_R symbol,
2376 which indicates to the C program that the setservent_r()
2377 routine is available.
2379 d_setsid (d_setsid.U):
2380 This variable conditionally defines HAS_SETSID if setsid() is
2381 available to set the process group ID.
2383 d_setvbuf (d_setvbuf.U):
2384 This variable conditionally defines the HAS_SETVBUF symbol, which
2385 indicates to the C program that the setvbuf() routine is available
2386 to change buffering on an open stdio stream.
2389 This variable conditionally defines the HAS_SHM symbol, which
2390 indicates that the entire shm*(2) library is present.
2392 d_shmat (d_shmat.U):
2393 This variable conditionally defines the HAS_SHMAT symbol, which
2394 indicates to the C program that the shmat() routine is available.
2396 d_shmatprototype (d_shmat.U):
2397 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
2398 symbol, which indicates that sys/shm.h has a prototype for
2401 d_shmctl (d_shmctl.U):
2402 This variable conditionally defines the HAS_SHMCTL symbol, which
2403 indicates to the C program that the shmctl() routine is available.
2405 d_shmdt (d_shmdt.U):
2406 This variable conditionally defines the HAS_SHMDT symbol, which
2407 indicates to the C program that the shmdt() routine is available.
2409 d_shmget (d_shmget.U):
2410 This variable conditionally defines the HAS_SHMGET symbol, which
2411 indicates to the C program that the shmget() routine is available.
2413 d_sigaction (d_sigaction.U):
2414 This variable conditionally defines the HAS_SIGACTION symbol, which
2415 indicates that the Vr4 sigaction() routine is available.
2417 d_siginfo_si_addr (d_siginfo_si.U):
2418 This variable conditionally defines the HAS_SIGINFO_SI_ADDR symbol,
2419 which indicates that the siginfo_t struct has the si_addr member.
2421 d_siginfo_si_band (d_siginfo_si.U):
2422 This variable conditionally defines the HAS_SIGINFO_SI_BAND symbol,
2423 which indicates that the siginfo_t struct has the si_band member.
2425 d_siginfo_si_errno (d_siginfo_si.U):
2426 This variable conditionally defines the HAS_SIGINFO_SI_ERRNO symbol,
2427 which indicates that the siginfo_t struct has the si_errno member.
2429 d_siginfo_si_fd (d_siginfo_si.U):
2430 This variable conditionally defines the HAS_SIGINFO_SI_FD symbol,
2431 which indicates that the siginfo_t struct has the si_fd member.
2433 d_siginfo_si_pid (d_siginfo_si.U):
2434 This variable conditionally defines the HAS_SIGINFO_SI_PID symbol,
2435 which indicates that the siginfo_t struct has the si_pid member.
2437 d_siginfo_si_status (d_siginfo_si.U):
2438 This variable conditionally defines the HAS_SIGINFO_SI_STATUS symbol,
2439 which indicates that the siginfo_t struct has the si_status member.
2441 d_siginfo_si_uid (d_siginfo_si.U):
2442 This variable conditionally defines the HAS_SIGINFO_SI_UID symbol,
2443 which indicates that the siginfo_t struct has the si_uid member.
2445 d_siginfo_si_value (d_siginfo_si.U):
2446 This variable conditionally defines the HAS_SIGINFO_SI_VALUE symbol,
2447 which indicates that the siginfo_t struct has the si_value member.
2449 d_signbit (d_signbit.U):
2450 This variable conditionally defines the HAS_SIGNBIT symbol, which
2451 indicates to the C program that the signbit() routine is available
2452 and safe to use with perl's intern NV type.
2454 d_sigprocmask (d_sigprocmask.U):
2455 This variable conditionally defines HAS_SIGPROCMASK
2456 if sigprocmask() is available to examine or change the signal mask
2457 of the calling process.
2459 d_sigsetjmp (d_sigsetjmp.U):
2460 This variable conditionally defines the HAS_SIGSETJMP symbol,
2461 which indicates that the sigsetjmp() routine is available to
2462 call setjmp() and optionally save the process's signal mask.
2464 d_sin6_scope_id (d_socket.U):
2465 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol, which
2466 indicates that a struct sockaddr_in6 structure has the sin6_scope_id
2469 d_sitearch (sitearch.U):
2470 This variable conditionally defines SITEARCH to hold the pathname
2471 of architecture-dependent library files for $package. If
2472 $sitearch is the same as $archlib, then this is set to undef.
2474 d_snprintf (d_snprintf.U):
2475 This variable conditionally defines the HAS_SNPRINTF symbol, which
2476 indicates to the C program that the snprintf () library function
2479 d_sockaddr_in6 (d_socket.U):
2480 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol, which
2481 indicates the availability of a struct sockaddr_in6.
2483 d_sockaddr_sa_len (d_socket.U):
2484 This variable conditionally defines the HAS_SOCKADDR_SA_LEN symbol,
2485 which indicates that a struct sockaddr structure has the sa_len
2488 d_sockatmark (d_sockatmark.U):
2489 This variable conditionally defines the HAS_SOCKATMARK symbol, which
2490 indicates to the C program that the sockatmark() routine is available.
2492 d_sockatmarkproto (d_sockatmarkproto.U):
2493 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
2494 which indicates to the C program that the system provides
2495 a prototype for the sockatmark() function. Otherwise, it is
2496 up to the program to supply one.
2498 d_socket (d_socket.U):
2499 This variable conditionally defines HAS_SOCKET, which indicates
2500 that the BSD socket interface is supported.
2502 d_socklen_t (d_socklen_t.U):
2503 This symbol will be defined if the C compiler supports socklen_t.
2505 d_sockpair (d_socket.U):
2506 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
2507 indicates that the BSD socketpair() is supported.
2509 d_socks5_init (d_socks5_init.U):
2510 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
2511 indicates to the C program that the socks5_init() routine is available.
2513 d_sprintf_returns_strlen (d_sprintf_len.U):
2514 This variable defines whether sprintf returns the length of the string
2515 (as per the ANSI spec). Some C libraries retain compatibility with
2516 pre-ANSI C and return a pointer to the passed in buffer; for these
2517 this variable will be undef.
2519 d_sqrtl (d_sqrtl.U):
2520 This variable conditionally defines the HAS_SQRTL symbol, which
2521 indicates to the C program that the sqrtl() routine is available.
2523 d_srand48_r (d_srand48_r.U):
2524 This variable conditionally defines the HAS_SRAND48_R symbol,
2525 which indicates to the C program that the srand48_r()
2526 routine is available.
2528 d_srandom_r (d_srandom_r.U):
2529 This variable conditionally defines the HAS_SRANDOM_R symbol,
2530 which indicates to the C program that the srandom_r()
2531 routine is available.
2533 d_sresgproto (d_sresgproto.U):
2534 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
2535 which indicates to the C program that the system provides
2536 a prototype for the setresgid() function. Otherwise, it is
2537 up to the program to supply one.
2539 d_sresuproto (d_sresuproto.U):
2540 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2541 which indicates to the C program that the system provides
2542 a prototype for the setresuid() function. Otherwise, it is
2543 up to the program to supply one.
2546 This variable conditionally defines HAS_STAT if stat() is
2547 available to get file status.
2549 d_statblks (d_statblks.U):
2550 This variable conditionally defines USE_STAT_BLOCKS
2551 if this system has a stat structure declaring
2552 st_blksize and st_blocks.
2554 d_statfs_f_flags (d_statfs_f_flags.U):
2555 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2556 symbol, which indicates to struct statfs from has f_flags member.
2557 This kind of struct statfs is coming from sys/mount.h (BSD),
2558 not from sys/statfs.h (SYSV).
2560 d_statfs_s (d_statfs_s.U):
2561 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2562 which indicates that the struct statfs is supported.
2564 d_static_inline (d_static_inline.U):
2565 This variable conditionally defines the HAS_STATIC_INLINE symbol,
2566 which indicates that the C compiler supports C99-style static
2567 inline. That is, the function can't be called from another
2570 d_statvfs (d_statvfs.U):
2571 This variable conditionally defines the HAS_STATVFS symbol, which
2572 indicates to the C program that the statvfs() routine is available.
2574 d_stdio_cnt_lval (d_stdstdio.U):
2575 This variable conditionally defines STDIO_CNT_LVALUE if the
2576 FILE_cnt macro can be used as an lvalue.
2578 d_stdio_ptr_lval (d_stdstdio.U):
2579 This variable conditionally defines STDIO_PTR_LVALUE if the
2580 FILE_ptr macro can be used as an lvalue.
2582 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2583 This symbol is defined if using the FILE_ptr macro as an lvalue
2584 to increase the pointer by n leaves File_cnt(fp) unchanged.
2586 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2587 This symbol is defined if using the FILE_ptr macro as an lvalue
2588 to increase the pointer by n has the side effect of decreasing the
2589 value of File_cnt(fp) by n.
2591 d_stdio_stream_array (stdio_streams.U):
2592 This variable tells whether there is an array holding
2595 d_stdiobase (d_stdstdio.U):
2596 This variable conditionally defines USE_STDIO_BASE if this system
2597 has a FILE structure declaring a usable _base field (or equivalent)
2600 d_stdstdio (d_stdstdio.U):
2601 This variable conditionally defines USE_STDIO_PTR if this system
2602 has a FILE structure declaring usable _ptr and _cnt fields (or
2603 equivalent) in stdio.h.
2605 d_strchr (d_strchr.U):
2606 This variable conditionally defines HAS_STRCHR if strchr() and
2607 strrchr() are available for string searching.
2609 d_strcoll (d_strcoll.U):
2610 This variable conditionally defines HAS_STRCOLL if strcoll() is
2611 available to compare strings using collating information.
2613 d_strctcpy (d_strctcpy.U):
2614 This variable conditionally defines the USE_STRUCT_COPY symbol, which
2615 indicates to the C program that this C compiler knows how to copy
2618 d_strerrm (d_strerror.U):
2619 This variable holds what Strerror is defined as to translate an error
2620 code condition into an error message string. It could be 'strerror'
2621 or a more complex macro emulating strerror with sys_errlist[], or the
2622 "unknown" string when both strerror and sys_errlist are missing.
2624 d_strerror (d_strerror.U):
2625 This variable conditionally defines HAS_STRERROR if strerror() is
2626 available to translate error numbers to strings.
2628 d_strerror_l (d_strerror_l.U):
2629 This variable conditionally defines the HAS_STRERROR_L symbol, which
2630 indicates to the C program that the strerror_l() routine is available
2631 to return the error message for a given errno value in a particular
2632 locale (identified by a locale_t object).
2634 d_strerror_r (d_strerror_r.U):
2635 This variable conditionally defines the HAS_STRERROR_R symbol,
2636 which indicates to the C program that the strerror_r()
2637 routine is available.
2639 d_strftime (d_strftime.U):
2640 This variable conditionally defines the HAS_STRFTIME symbol, which
2641 indicates to the C program that the strftime() routine is available.
2643 d_strlcat (d_strlcat.U):
2644 This variable conditionally defines the HAS_STRLCAT symbol, which
2645 indicates to the C program that the strlcat () routine is available.
2647 d_strlcpy (d_strlcpy.U):
2648 This variable conditionally defines the HAS_STRLCPY symbol, which
2649 indicates to the C program that the strlcpy () routine is available.
2651 d_strtod (d_strtod.U):
2652 This variable conditionally defines the HAS_STRTOD symbol, which
2653 indicates to the C program that the strtod() routine is available
2654 to provide better numeric string conversion than atof().
2656 d_strtol (d_strtol.U):
2657 This variable conditionally defines the HAS_STRTOL symbol, which
2658 indicates to the C program that the strtol() routine is available
2659 to provide better numeric string conversion than atoi() and friends.
2661 d_strtold (d_strtold.U):
2662 This variable conditionally defines the HAS_STRTOLD symbol, which
2663 indicates to the C program that the strtold() routine is available.
2665 d_strtoll (d_strtoll.U):
2666 This variable conditionally defines the HAS_STRTOLL symbol, which
2667 indicates to the C program that the strtoll() routine is available.
2669 d_strtoq (d_strtoq.U):
2670 This variable conditionally defines the HAS_STRTOQ symbol, which
2671 indicates to the C program that the strtoq() routine is available.
2673 d_strtoul (d_strtoul.U):
2674 This variable conditionally defines the HAS_STRTOUL symbol, which
2675 indicates to the C program that the strtoul() routine is available
2676 to provide conversion of strings to unsigned long.
2678 d_strtoull (d_strtoull.U):
2679 This variable conditionally defines the HAS_STRTOULL symbol, which
2680 indicates to the C program that the strtoull() routine is available.
2682 d_strtouq (d_strtouq.U):
2683 This variable conditionally defines the HAS_STRTOUQ symbol, which
2684 indicates to the C program that the strtouq() routine is available.
2686 d_strxfrm (d_strxfrm.U):
2687 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2688 available to transform strings.
2690 d_suidsafe (d_dosuid.U):
2691 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2692 if setuid scripts can be secure. This test looks in /dev/fd/.
2694 d_symlink (d_symlink.U):
2695 This variable conditionally defines the HAS_SYMLINK symbol, which
2696 indicates to the C program that the symlink() routine is available
2697 to create symbolic links.
2699 d_syscall (d_syscall.U):
2700 This variable conditionally defines HAS_SYSCALL if syscall() is
2701 available call arbitrary system calls.
2703 d_syscallproto (d_syscallproto.U):
2704 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2705 which indicates to the C program that the system provides
2706 a prototype for the syscall() function. Otherwise, it is
2707 up to the program to supply one.
2709 d_sysconf (d_sysconf.U):
2710 This variable conditionally defines the HAS_SYSCONF symbol, which
2711 indicates to the C program that the sysconf() routine is available
2712 to determine system related limits and options.
2714 d_sysernlst (d_strerror.U):
2715 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2716 is available to translate error numbers to the symbolic name.
2718 d_syserrlst (d_strerror.U):
2719 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2720 available to translate error numbers to strings.
2722 d_system (d_system.U):
2723 This variable conditionally defines HAS_SYSTEM if system() is
2724 available to issue a shell command.
2726 d_tcgetpgrp (d_tcgtpgrp.U):
2727 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2728 indicates to the C program that the tcgetpgrp() routine is available.
2729 to get foreground process group ID.
2731 d_tcsetpgrp (d_tcstpgrp.U):
2732 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2733 indicates to the C program that the tcsetpgrp() routine is available
2734 to set foreground process group ID.
2736 d_telldir (d_readdir.U):
2737 This variable conditionally defines HAS_TELLDIR if telldir() is
2740 d_telldirproto (d_telldirproto.U):
2741 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2742 which indicates to the C program that the system provides
2743 a prototype for the telldir() function. Otherwise, it is
2744 up to the program to supply one.
2746 d_tgamma (d_tgamma.U):
2747 This variable conditionally defines the HAS_TGAMMA symbol, which
2748 indicates to the C program that the tgamma() routine is available
2749 for the gamma function. See also d_lgamma.
2752 This variable conditionally defines the HAS_TIME symbol, which indicates
2753 that the time() routine exists. The time() routine is normally
2754 provided on UNIX systems.
2756 d_timegm (d_timegm.U):
2757 This variable conditionally defines the HAS_TIMEGM symbol, which
2758 indicates to the C program that the timegm () routine is available.
2760 d_times (d_times.U):
2761 This variable conditionally defines the HAS_TIMES symbol, which indicates
2762 that the times() routine exists. The times() routine is normally
2763 provided on UNIX systems. You may have to include <sys/times.h>.
2765 d_tm_tm_gmtoff (i_time.U):
2766 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2767 indicates to the C program that the struct tm has the tm_gmtoff field.
2769 d_tm_tm_zone (i_time.U):
2770 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2771 indicates to the C program that the struct tm has the tm_zone field.
2773 d_tmpnam_r (d_tmpnam_r.U):
2774 This variable conditionally defines the HAS_TMPNAM_R symbol,
2775 which indicates to the C program that the tmpnam_r()
2776 routine is available.
2778 d_trunc (d_trunc.U):
2779 This variable conditionally defines the HAS_TRUNC symbol, which
2780 indicates to the C program that the trunc() routine is available
2781 to round doubles towards zero.
2783 d_truncate (d_truncate.U):
2784 This variable conditionally defines HAS_TRUNCATE if truncate() is
2785 available to truncate files.
2787 d_truncl (d_truncl.U):
2788 This variable conditionally defines the HAS_TRUNCL symbol, which
2789 indicates to the C program that the truncl() routine is available
2790 to round long doubles towards zero. If copysignl is also present,
2791 we can emulate modfl.
2793 d_ttyname_r (d_ttyname_r.U):
2794 This variable conditionally defines the HAS_TTYNAME_R symbol,
2795 which indicates to the C program that the ttyname_r()
2796 routine is available.
2798 d_tzname (d_tzname.U):
2799 This variable conditionally defines HAS_TZNAME if tzname[] is
2800 available to access timezone names.
2802 d_u32align (d_u32align.U):
2803 This variable tells whether you must access character data
2804 through U32-aligned pointers.
2806 d_ualarm (d_ualarm.U):
2807 This variable conditionally defines the HAS_UALARM symbol, which
2808 indicates to the C program that the ualarm() routine is available.
2810 d_umask (d_umask.U):
2811 This variable conditionally defines the HAS_UMASK symbol, which
2812 indicates to the C program that the umask() routine is available.
2813 to set and get the value of the file creation mask.
2815 d_uname (d_gethname.U):
2816 This variable conditionally defines the HAS_UNAME symbol, which
2817 indicates to the C program that the uname() routine may be
2818 used to derive the host name.
2820 d_union_semun (d_union_semun.U):
2821 This variable conditionally defines HAS_UNION_SEMUN if the
2822 union semun is defined by including <sys/sem.h>.
2824 d_unordered (d_unordered.U):
2825 This variable conditionally defines the HAS_UNORDERED symbol, which
2826 indicates to the C program that the unordered() routine is available.
2828 d_unsetenv (d_unsetenv.U):
2829 This variable conditionally defines the HAS_UNSETENV symbol, which
2830 indicates to the C program that the unsetenv () routine is available.
2832 d_uselocale (d_newlocale.U):
2833 This variable conditionally defines the HAS_USELOCALE symbol, which
2834 indicates to the C program that the uselocale() routine is available
2835 to set the current locale for the calling thread.
2837 d_usleep (d_usleep.U):
2838 This variable conditionally defines HAS_USLEEP if usleep() is
2839 available to do high granularity sleeps.
2841 d_usleepproto (d_usleepproto.U):
2842 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2843 which indicates to the C program that the system provides
2844 a prototype for the usleep() function. Otherwise, it is
2845 up to the program to supply one.
2847 d_ustat (d_ustat.U):
2848 This variable conditionally defines HAS_USTAT if ustat() is
2849 available to query file system statistics by dev_t.
2851 d_vendorarch (vendorarch.U):
2852 This variable conditionally defined PERL_VENDORARCH.
2854 d_vendorbin (vendorbin.U):
2855 This variable conditionally defines PERL_VENDORBIN.
2857 d_vendorlib (vendorlib.U):
2858 This variable conditionally defines PERL_VENDORLIB.
2860 d_vendorscript (vendorscript.U):
2861 This variable conditionally defines PERL_VENDORSCRIPT.
2863 d_vfork (d_vfork.U):
2864 This variable conditionally defines the HAS_VFORK symbol, which
2865 indicates the vfork() routine is available.
2867 d_void_closedir (d_closedir.U):
2868 This variable conditionally defines VOID_CLOSEDIR if closedir()
2869 does not return a value.
2871 d_voidsig (d_voidsig.U):
2872 This variable conditionally defines VOIDSIG if this system
2873 declares "void (*signal(...))()" in signal.h. The old way was to
2874 declare it as "int (*signal(...))()".
2876 d_voidtty (i_sysioctl.U):
2877 This variable conditionally defines USE_IOCNOTTY to indicate that the
2878 ioctl() call with TIOCNOTTY should be used to void tty association.
2879 Otherwise (on USG probably), it is enough to close the standard file
2880 descriptors and do a setpgrp().
2882 d_volatile (d_volatile.U):
2883 This variable conditionally defines the HASVOLATILE symbol, which
2884 indicates to the C program that this C compiler knows about the
2885 volatile declaration.
2887 d_vprintf (d_vprintf.U):
2888 This variable conditionally defines the HAS_VPRINTF symbol, which
2889 indicates to the C program that the vprintf() routine is available
2890 to printf with a pointer to an argument list.
2892 d_vsnprintf (d_snprintf.U):
2893 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2894 indicates to the C program that the vsnprintf () library function
2897 d_wait4 (d_wait4.U):
2898 This variable conditionally defines the HAS_WAIT4 symbol, which
2899 indicates the wait4() routine is available.
2901 d_waitpid (d_waitpid.U):
2902 This variable conditionally defines HAS_WAITPID if waitpid() is
2903 available to wait for child process.
2905 d_wcscmp (d_wcscmp.U):
2906 This variable conditionally defines the HAS_WCSCMP symbol if the
2907 wcscmp() routine is available and can be used to compare wide
2910 d_wcstombs (d_wcstombs.U):
2911 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2912 indicates to the C program that the wcstombs() routine is available
2913 to convert wide character strings to multibyte strings.
2915 d_wcsxfrm (d_wcsxfrm.U):
2916 This variable conditionally defines the HAS_WCSXFRM symbol if the
2917 wcsxfrm() routine is available and can be used to compare wide
2920 d_wctomb (d_wctomb.U):
2921 This variable conditionally defines the HAS_WCTOMB symbol, which
2922 indicates to the C program that the wctomb() routine is available
2923 to convert a wide character to a multibyte.
2925 d_writev (d_writev.U):
2926 This variable conditionally defines the HAS_WRITEV symbol, which
2927 indicates to the C program that the writev() routine is available.
2930 This variable conditionally defines the symbol XENIX, which alerts
2931 the C program that it runs under Xenix.
2934 This variable is used internally by Configure to determine the
2935 full pathname (if any) of the date program. After Configure runs,
2936 the value is reset to a plain "date" and is not useful.
2938 db_hashtype (i_db.U):
2939 This variable contains the type of the hash structure element
2940 in the <db.h> header file. In older versions of DB, it was
2941 int, while in newer ones it is u_int32_t.
2943 db_prefixtype (i_db.U):
2944 This variable contains the type of the prefix structure element
2945 in the <db.h> header file. In older versions of DB, it was
2946 int, while in newer ones it is size_t.
2948 db_version_major (i_db.U):
2949 This variable contains the major version number of
2950 Berkeley DB found in the <db.h> header file.
2952 db_version_minor (i_db.U):
2953 This variable contains the minor version number of
2954 Berkeley DB found in the <db.h> header file.
2955 For DB version 1 this is always 0.
2957 db_version_patch (i_db.U):
2958 This variable contains the patch version number of
2959 Berkeley DB found in the <db.h> header file.
2960 For DB version 1 this is always 0.
2962 direntrytype (i_dirent.U):
2963 This symbol is set to 'struct direct' or 'struct dirent' depending on
2964 whether dirent is available or not. You should use this pseudo type to
2965 portably declare your directory entries.
2968 This variable contains the extension that is to be used for the
2969 dynamically loaded modules that perl generates.
2972 This variable contains the name of the dynamic loading file that
2973 will be used with the package.
2975 doubleinfbytes (infnan.U):
2976 This variable contains comma-separated list of hexadecimal bytes
2977 for the double precision infinity.
2979 doublekind (longdblfio.U):
2980 This variable, if defined, encodes the type of a double:
2981 1 = IEEE 754 32-bit little endian,
2982 2 = IEEE 754 32-bit big endian,
2983 3 = IEEE 754 64-bit little endian,
2984 4 = IEEE 754 64-bit big endian,
2985 5 = IEEE 754 128-bit little endian,
2986 6 = IEEE 754 128-bit big endian,
2987 7 = IEEE 754 64-bit mixed endian le-be,
2988 8 = IEEE 754 64-bit mixed endian be-le,
2989 9 = VAX 32bit little endian F float format
2990 10 = VAX 64bit little endian D float format
2991 11 = VAX 64bit little endian G float format
2992 12 = IBM 32bit format
2993 13 = IBM 64bit format
2994 14 = Cray 64bit format
2995 -1 = unknown format.
2997 doublemantbits (mantbits.U):
2998 This symbol, if defined, tells how many mantissa bits
2999 there are in double precision floating point format.
3000 Note that this is usually DBL_MANT_DIG minus one, since
3001 with the standard IEEE 754 formats DBL_MANT_DIG includes
3002 the implicit bit which doesn't really exist.
3004 doublenanbytes (infnan.U):
3005 This variable contains comma-separated list of hexadecimal bytes
3006 for the double precision not-a-number.
3008 doublesize (doublesize.U):
3009 This variable contains the value of the DOUBLESIZE symbol, which
3010 indicates to the C program how many bytes there are in a double.
3012 drand01 (randfunc.U):
3013 Indicates the macro to be used to generate normalized
3014 random numbers. Uses randfunc, often divided by
3015 (double) (((unsigned long) 1 << randbits)) in order to
3016 normalize the result.
3017 In C programs, the macro 'Drand01' is mapped to drand01.
3019 drand48_r_proto (d_drand48_r.U):
3020 This variable encodes the prototype of drand48_r.
3021 It is zero if d_drand48_r is undef, and one of the
3022 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
3025 dtrace (usedtrace.U):
3026 This variable holds the location of the dtrace executable.
3028 dtraceobject (dtraceobject.U):
3029 Whether we need to build an object file with the dtrace tool.
3031 dynamic_ext (Extensions.U):
3032 This variable holds a list of XS extension files we want to
3033 link dynamically into the package. It is used by Makefile.
3035 eagain (nblock_io.U):
3036 This variable bears the symbolic errno code set by read() when no
3037 data is present on the file and non-blocking I/O was enabled (otherwise,
3038 read() blocks naturally).
3041 This variable conditionally defines EBCDIC if this
3042 system uses EBCDIC encoding.
3045 This variable is used internally by Configure to determine the
3046 full pathname (if any) of the echo program. After Configure runs,
3047 the value is reset to a plain "echo" and is not useful.
3050 This variable is used internally by Configure to determine the
3051 full pathname (if any) of the egrep program. After Configure runs,
3052 the value is reset to a plain "egrep" and is not useful.
3055 This variable is defined but not used by Configure.
3056 The value is the empty string and is not useful.
3058 endgrent_r_proto (d_endgrent_r.U):
3059 This variable encodes the prototype of endgrent_r.
3060 It is zero if d_endgrent_r is undef, and one of the
3061 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
3064 endhostent_r_proto (d_endhostent_r.U):
3065 This variable encodes the prototype of endhostent_r.
3066 It is zero if d_endhostent_r is undef, and one of the
3067 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
3070 endnetent_r_proto (d_endnetent_r.U):
3071 This variable encodes the prototype of endnetent_r.
3072 It is zero if d_endnetent_r is undef, and one of the
3073 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
3076 endprotoent_r_proto (d_endprotoent_r.U):
3077 This variable encodes the prototype of endprotoent_r.
3078 It is zero if d_endprotoent_r is undef, and one of the
3079 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
3082 endpwent_r_proto (d_endpwent_r.U):
3083 This variable encodes the prototype of endpwent_r.
3084 It is zero if d_endpwent_r is undef, and one of the
3085 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
3088 endservent_r_proto (d_endservent_r.U):
3089 This variable encodes the prototype of endservent_r.
3090 It is zero if d_endservent_r is undef, and one of the
3091 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
3095 When running under Eunice this variable contains a command which will
3096 convert a shell script to the proper form of text file for it to be
3097 executable by the shell. On other systems it is a no-op.
3100 This is an old synonym for _exe.
3103 This variable is used internally by Configure to determine the
3104 full pathname (if any) of the expr program. After Configure runs,
3105 the value is reset to a plain "expr" and is not useful.
3107 extensions (Extensions.U):
3108 This variable holds a list of all extension files (both XS and
3109 non-xs) installed with the package. It is propagated to Config.pm
3110 and is typically used to test whether a particular extension
3114 ANSI C requires 'extern' where C++ requires 'extern "C"'. This
3115 variable can be used in Configure to do the right thing.
3118 This variable holds a list of extra modules to install.
3120 fflushall (fflushall.U):
3121 This symbol, if defined, tells that to flush
3122 all pending stdio output one must loop through all
3123 the stdio file handles stored in an array and fflush them.
3124 Note that if fflushNULL is defined, fflushall will not
3125 even be probed for and will be left undefined.
3127 fflushNULL (fflushall.U):
3128 This symbol, if defined, tells that fflush(NULL) correctly
3129 flushes all pending stdio output without side effects. In
3130 particular, on some platforms calling fflush(NULL) *still*
3131 corrupts STDIN if it is a pipe.
3134 This variable is defined but not used by Configure.
3135 The value is the empty string and is not useful.
3137 firstmakefile (Unix.U):
3138 This variable defines the first file searched by make. On unix,
3139 it is makefile (then Makefile). On case-insensitive systems,
3140 it might be something else. This is only used to deal with
3141 convoluted make depend tricks.
3144 This variable is defined but not used by Configure.
3145 The value is the empty string and is not useful.
3147 fpossize (fpossize.U):
3148 This variable contains the size of a fpostype in bytes.
3150 fpostype (fpostype.U):
3151 This variable defines Fpos_t to be something like fpos_t, long,
3152 uint, or whatever type is used to declare file positions in libc.
3154 freetype (mallocsrc.U):
3155 This variable contains the return type of free(). It is usually
3156 void, but occasionally int.
3159 This variable contains the command used by Configure
3160 to copy files from the target host. Useful and available
3161 only during Perl build.
3162 The string ':' if not cross-compiling.
3165 This variable contains the full pathname to 'ar', whether or
3166 not the user has specified 'portability'. This is only used
3170 This variable contains the full pathname to 'csh', whether or
3171 not the user has specified 'portability'. This is only used
3172 in the compiled C program, and we assume that all systems which
3173 can share this executable will have the same full pathname to
3176 full_sed (Loc_sed.U):
3177 This variable contains the full pathname to 'sed', whether or
3178 not the user has specified 'portability'. This is only used
3179 in the compiled C program, and we assume that all systems which
3180 can share this executable will have the same full pathname to
3183 gccansipedantic (gccvers.U):
3184 If GNU cc (gcc) is used, this variable will enable (if set) the
3185 -ansi and -pedantic ccflags for building core files (through
3186 cflags script). (See Porting/pumpkin.pod for full description).
3188 gccosandvers (gccvers.U):
3189 If GNU cc (gcc) is used, this variable holds the operating system
3190 and version used to compile gcc. It is set to '' if not gcc,
3191 or if nothing useful can be parsed as the os version.
3193 gccversion (gccvers.U):
3194 If GNU cc (gcc) is used, this variable holds '1' or '2' to
3195 indicate whether the compiler is version 1 or 2. This is used in
3196 setting some of the default cflags. It is set to '' if not gcc.
3198 getgrent_r_proto (d_getgrent_r.U):
3199 This variable encodes the prototype of getgrent_r.
3200 It is zero if d_getgrent_r is undef, and one of the
3201 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
3204 getgrgid_r_proto (d_getgrgid_r.U):
3205 This variable encodes the prototype of getgrgid_r.
3206 It is zero if d_getgrgid_r is undef, and one of the
3207 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
3210 getgrnam_r_proto (d_getgrnam_r.U):
3211 This variable encodes the prototype of getgrnam_r.
3212 It is zero if d_getgrnam_r is undef, and one of the
3213 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
3216 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
3217 This variable encodes the prototype of gethostbyaddr_r.
3218 It is zero if d_gethostbyaddr_r is undef, and one of the
3219 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
3222 gethostbyname_r_proto (d_gethostbyname_r.U):
3223 This variable encodes the prototype of gethostbyname_r.
3224 It is zero if d_gethostbyname_r is undef, and one of the
3225 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
3228 gethostent_r_proto (d_gethostent_r.U):
3229 This variable encodes the prototype of gethostent_r.
3230 It is zero if d_gethostent_r is undef, and one of the
3231 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
3234 getlogin_r_proto (d_getlogin_r.U):
3235 This variable encodes the prototype of getlogin_r.
3236 It is zero if d_getlogin_r is undef, and one of the
3237 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
3240 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
3241 This variable encodes the prototype of getnetbyaddr_r.
3242 It is zero if d_getnetbyaddr_r is undef, and one of the
3243 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
3246 getnetbyname_r_proto (d_getnetbyname_r.U):
3247 This variable encodes the prototype of getnetbyname_r.
3248 It is zero if d_getnetbyname_r is undef, and one of the
3249 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
3252 getnetent_r_proto (d_getnetent_r.U):
3253 This variable encodes the prototype of getnetent_r.
3254 It is zero if d_getnetent_r is undef, and one of the
3255 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
3258 getprotobyname_r_proto (d_getprotobyname_r.U):
3259 This variable encodes the prototype of getprotobyname_r.
3260 It is zero if d_getprotobyname_r is undef, and one of the
3261 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
3264 getprotobynumber_r_proto (d_getprotobynumber_r.U):
3265 This variable encodes the prototype of getprotobynumber_r.
3266 It is zero if d_getprotobynumber_r is undef, and one of the
3267 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
3270 getprotoent_r_proto (d_getprotoent_r.U):
3271 This variable encodes the prototype of getprotoent_r.
3272 It is zero if d_getprotoent_r is undef, and one of the
3273 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
3276 getpwent_r_proto (d_getpwent_r.U):
3277 This variable encodes the prototype of getpwent_r.
3278 It is zero if d_getpwent_r is undef, and one of the
3279 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
3282 getpwnam_r_proto (d_getpwnam_r.U):
3283 This variable encodes the prototype of getpwnam_r.
3284 It is zero if d_getpwnam_r is undef, and one of the
3285 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
3288 getpwuid_r_proto (d_getpwuid_r.U):
3289 This variable encodes the prototype of getpwuid_r.
3290 It is zero if d_getpwuid_r is undef, and one of the
3291 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
3294 getservbyname_r_proto (d_getservbyname_r.U):
3295 This variable encodes the prototype of getservbyname_r.
3296 It is zero if d_getservbyname_r is undef, and one of the
3297 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
3300 getservbyport_r_proto (d_getservbyport_r.U):
3301 This variable encodes the prototype of getservbyport_r.
3302 It is zero if d_getservbyport_r is undef, and one of the
3303 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
3306 getservent_r_proto (d_getservent_r.U):
3307 This variable encodes the prototype of getservent_r.
3308 It is zero if d_getservent_r is undef, and one of the
3309 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
3312 getspnam_r_proto (d_getspnam_r.U):
3313 This variable encodes the prototype of getspnam_r.
3314 It is zero if d_getspnam_r is undef, and one of the
3315 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
3319 This variable contains the format string used for printing a Gid_t.
3321 gidsign (gidsign.U):
3322 This variable contains the signedness of a gidtype.
3323 1 for unsigned, -1 for signed.
3325 gidsize (gidsize.U):
3326 This variable contains the size of a gidtype in bytes.
3328 gidtype (gidtype.U):
3329 This variable defines Gid_t to be something like gid_t, int,
3330 ushort, or whatever type is used to declare the return type
3331 of getgid(). Typically, it is the type of group ids in the kernel.
3334 This variable holds the general path (space-separated) used to
3335 find libraries. It may contain directories that do not exist on
3336 this platform, libpth is the cleaned-up version.
3339 This variable is used internally by Configure to determine the
3340 full pathname (if any) of the gmake program. After Configure runs,
3341 the value is reset to a plain "gmake" and is not useful.
3343 gmtime_r_proto (d_gmtime_r.U):
3344 This variable encodes the prototype of gmtime_r.
3345 It is zero if d_gmtime_r is undef, and one of the
3346 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
3349 gnulibc_version (d_gnulibc.U):
3350 This variable contains the version number of the GNU C library.
3351 It is usually something like '2.2.5'. It is a plain '' if this
3352 is not the GNU C library, or if the version is unknown.
3355 This variable is used internally by Configure to determine the
3356 full pathname (if any) of the grep program. After Configure runs,
3357 the value is reset to a plain "grep" and is not useful.
3360 This variable contains a command that produces the text of the
3361 /etc/group file. This is normally "cat /etc/group", but can be
3362 "ypcat group" when NIS is used.
3363 On some systems, such as os390, there may be no equivalent
3364 command, in which case this variable is unset.
3366 groupstype (groupstype.U):
3367 This variable defines Groups_t to be something like gid_t, int,
3368 ushort, or whatever type is used for the second argument to
3369 getgroups() and setgroups(). Usually, this is the same as
3370 gidtype (gid_t), but sometimes it isn't.
3373 This variable is used internally by Configure to determine the
3374 full pathname (if any) of the gzip program. After Configure runs,
3375 the value is reset to a plain "gzip" and is not useful.
3377 h_fcntl (h_fcntl.U):
3378 This is variable gets set in various places to tell i_fcntl that
3379 <fcntl.h> should be included.
3381 h_sysfile (h_sysfile.U):
3382 This is variable gets set in various places to tell i_sys_file that
3383 <sys/file.h> should be included.
3386 Gives the type of hints used for previous answers. May be one of
3387 "default", "recommended" or "previous".
3390 This variable contains a command that produces the text of the
3391 /etc/hosts file. This is normally "cat /etc/hosts", but can be
3392 "ypcat hosts" when NIS is used.
3393 On some systems, such as os390, there may be no equivalent
3394 command, in which case this variable is unset.
3396 hostgenerate (Cross.U):
3397 This variable contains the path to a generate_uudmap binary that
3398 can be run on the host OS when cross-compiling. Useful and
3399 available only during Perl build.
3400 Empty string '' if not cross-compiling.
3402 hostosname (Cross.U):
3403 This variable contains the original value of '$^O' for hostperl
3404 when cross-compiling. This is useful to pick the proper tools
3405 when running build code in the host.
3406 Empty string '' if not cross-compiling.
3409 This variable contains the path to a miniperl binary that can be
3410 run on the host OS when cross-compiling. Useful and available only
3412 Empty string '' if not cross-compiling.
3414 html1dir (html1dir.U):
3415 This variable contains the name of the directory in which html
3416 source pages are to be put. This directory is for pages
3417 that describe whole programs, not libraries or modules. It
3418 is intended to correspond roughly to section 1 of the Unix
3421 html1direxp (html1dir.U):
3422 This variable is the same as the html1dir variable, but is filename
3423 expanded at configuration time, for convenient use in makefiles.
3425 html3dir (html3dir.U):
3426 This variable contains the name of the directory in which html
3427 source pages are to be put. This directory is for pages
3428 that describe libraries or modules. It is intended to
3429 correspond roughly to section 3 of the Unix manuals.
3431 html3direxp (html3dir.U):
3432 This variable is the same as the html3dir variable, but is filename
3433 expanded at configuration time, for convenient use in makefiles.
3436 This variable is the size of an I16 in bytes.
3439 This variable contains the C type used for Perl's I16.
3442 This variable is the size of an I32 in bytes.
3445 This variable contains the C type used for Perl's I32.
3448 This variable is the size of an I64 in bytes.
3451 This variable contains the C type used for Perl's I64.
3454 This variable is the size of an I8 in bytes.
3457 This variable contains the C type used for Perl's I8.
3459 i_arpainet (i_arpainet.U):
3460 This variable conditionally defines the I_ARPA_INET symbol,
3461 and indicates whether a C program should include <arpa/inet.h>.
3463 i_assert (i_assert.U):
3464 This variable conditionally defines the I_ASSERT symbol, which
3465 indicates to the C program that <assert.h> exists and could be
3469 This variable conditionally defines the I_BFD symbol, and
3470 indicates whether a C program can include <bfd.h>.
3472 i_bsdioctl (i_sysioctl.U):
3473 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
3474 indicates to the C program that <sys/bsdioctl.h> exists and should
3477 i_crypt (i_crypt.U):
3478 This variable conditionally defines the I_CRYPT symbol, and indicates
3479 whether a C program should include <crypt.h>.
3482 This variable conditionally defines the I_DB symbol, and indicates
3483 whether a C program may include Berkeley's DB include file <db.h>.
3486 This variable conditionally defines the I_DBM symbol, which
3487 indicates to the C program that <dbm.h> exists and should
3490 i_dirent (i_dirent.U):
3491 This variable conditionally defines I_DIRENT, which indicates
3492 to the C program that it should include <dirent.h>.
3494 i_dlfcn (i_dlfcn.U):
3495 This variable conditionally defines the I_DLFCN symbol, which
3496 indicates to the C program that <dlfcn.h> exists and should
3499 i_execinfo (i_execinfo.U):
3500 This variable conditionally defines the I_EXECINFO symbol, and indicates
3501 whether a C program may include <execinfo.h>, for backtrace() support.
3503 i_fcntl (i_fcntl.U):
3504 This variable controls the value of I_FCNTL (which tells
3505 the C program to include <fcntl.h>).
3508 This variable conditionally defines the I_FENV symbol, which
3509 indicates to the C program that <fenv.h> exists and should
3512 i_float (i_float.U):
3513 This variable conditionally defines the I_FLOAT symbol, and indicates
3514 whether a C program may include <float.h> to get symbols like DBL_MAX
3515 or DBL_MIN, i.e. machine dependent floating point values.
3518 This variable conditionally defines the I_FP symbol, and indicates
3519 whether a C program should include <fp.h>.
3521 i_fp_class (i_fp_class.U):
3522 This variable conditionally defines the I_FP_CLASS symbol, and indicates
3523 whether a C program should include <fp_class.h>.
3526 This variable conditionally defines the I_GDBM symbol, which
3527 indicates to the C program that <gdbm.h> exists and should
3530 i_gdbm_ndbm (i_ndbm.U):
3531 This variable conditionally defines the I_GDBM_NDBM symbol, which
3532 indicates to the C program that <gdbm-ndbm.h> exists and should
3533 be included. This is the location of the ndbm.h compatibility file
3536 i_gdbmndbm (i_ndbm.U):
3537 This variable conditionally defines the I_GDBMNDBM symbol, which
3538 indicates to the C program that <gdbm/ndbm.h> exists and should
3539 be included. This was the location of the ndbm.h compatibility file
3543 This variable conditionally defines the I_GRP symbol, and indicates
3544 whether a C program should include <grp.h>.
3546 i_ieeefp (i_ieeefp.U):
3547 This variable conditionally defines the I_IEEEFP symbol, and indicates
3548 whether a C program should include <ieeefp.h>.
3550 i_inttypes (i_inttypes.U):
3551 This variable conditionally defines the I_INTTYPES symbol,
3552 and indicates whether a C program should include <inttypes.h>.
3554 i_langinfo (i_langinfo.U):
3555 This variable conditionally defines the I_LANGINFO symbol,
3556 and indicates whether a C program should include <langinfo.h>.
3558 i_libutil (i_libutil.U):
3559 This variable conditionally defines the I_LIBUTIL symbol, and indicates
3560 whether a C program should include <libutil.h>.
3562 i_limits (i_limits.U):
3563 This variable conditionally defines the I_LIMITS symbol, and indicates
3564 whether a C program may include <limits.h> to get symbols like WORD_BIT
3567 i_locale (i_locale.U):
3568 This variable conditionally defines the I_LOCALE symbol,
3569 and indicates whether a C program should include <locale.h>.
3571 i_machcthr (i_machcthr.U):
3572 This variable conditionally defines the I_MACH_CTHREADS symbol,
3573 and indicates whether a C program should include <mach/cthreads.h>.
3575 i_malloc (i_malloc.U):
3576 This variable conditionally defines the I_MALLOC symbol, and indicates
3577 whether a C program should include <malloc.h>.
3579 i_mallocmalloc (i_mallocmalloc.U):
3580 This variable conditionally defines the I_MALLOCMALLOC symbol,
3581 and indicates whether a C program should include <malloc/malloc.h>.
3584 This variable conditionally defines the I_MATH symbol, and indicates
3585 whether a C program may include <math.h>.
3587 i_memory (i_memory.U):
3588 This variable conditionally defines the I_MEMORY symbol, and indicates
3589 whether a C program should include <memory.h>.
3591 i_mntent (i_mntent.U):
3592 This variable conditionally defines the I_MNTENT symbol, and indicates
3593 whether a C program should include <mntent.h>.
3596 This variable conditionally defines the I_NDBM symbol, which
3597 indicates to the C program that <ndbm.h> exists and should
3600 i_netdb (i_netdb.U):
3601 This variable conditionally defines the I_NETDB symbol, and indicates
3602 whether a C program should include <netdb.h>.
3604 i_neterrno (i_neterrno.U):
3605 This variable conditionally defines the I_NET_ERRNO symbol, which
3606 indicates to the C program that <net/errno.h> exists and should
3609 i_netinettcp (i_netinettcp.U):
3610 This variable conditionally defines the I_NETINET_TCP symbol,
3611 and indicates whether a C program should include <netinet/tcp.h>.
3614 This variable conditionally defines I_NETINET_IN, which indicates
3615 to the C program that it should include <netinet/in.h>. Otherwise,
3616 you may try <sys/in.h>.
3619 This variable conditionally defines the I_POLL symbol, and indicates
3620 whether a C program should include <poll.h>.
3623 This variable conditionally defines the I_PROT symbol, and indicates
3624 whether a C program should include <prot.h>.
3626 i_pthread (i_pthread.U):
3627 This variable conditionally defines the I_PTHREAD symbol,
3628 and indicates whether a C program should include <pthread.h>.
3631 This variable conditionally defines I_PWD, which indicates
3632 to the C program that it should include <pwd.h>.
3634 i_quadmath (i_quadmath.U):
3635 This variable conditionally defines I_QUADMATH, which indicates
3636 to the C program that it should include <quadmath.h>.
3638 i_rpcsvcdbm (i_dbm.U):
3639 This variable conditionally defines the I_RPCSVC_DBM symbol, which
3640 indicates to the C program that <rpcsvc/dbm.h> exists and should
3641 be included. Some System V systems might need this instead of <dbm.h>.
3643 i_sgtty (i_termio.U):
3644 This variable conditionally defines the I_SGTTY symbol, which
3645 indicates to the C program that it should include <sgtty.h> rather
3648 i_shadow (i_shadow.U):
3649 This variable conditionally defines the I_SHADOW symbol, and indicates
3650 whether a C program should include <shadow.h>.
3652 i_socks (i_socks.U):
3653 This variable conditionally defines the I_SOCKS symbol, and indicates
3654 whether a C program should include <socks.h>.
3656 i_stdarg (i_varhdr.U):
3657 This variable conditionally defines the I_STDARG symbol, which
3658 indicates to the C program that <stdarg.h> exists and should
3661 i_stdbool (i_stdbool.U):
3662 This variable conditionally defines the I_STDBOOL symbol, which
3663 indicates to the C program that <stdbool.h> exists and should
3666 i_stddef (i_stddef.U):
3667 This variable conditionally defines the I_STDDEF symbol, which
3668 indicates to the C program that <stddef.h> exists and should
3671 i_stdint (i_stdint.U):
3672 This variable conditionally defines the I_STDINT symbol, which
3673 indicates to the C program that <stdint.h> exists and should
3676 i_stdlib (i_stdlib.U):
3677 This variable conditionally defines the I_STDLIB symbol, which
3678 indicates to the C program that <stdlib.h> exists and should
3681 i_string (i_string.U):
3682 This variable conditionally defines the I_STRING symbol, which
3683 indicates that <string.h> should be included rather than <strings.h>.
3685 i_sunmath (i_sunmath.U):
3686 This variable conditionally defines the I_SUNMATH symbol, and indicates
3687 whether a C program should include <sunmath.h>.
3689 i_sysaccess (i_sysaccess.U):
3690 This variable conditionally defines the I_SYS_ACCESS symbol,
3691 and indicates whether a C program should include <sys/access.h>.
3693 i_sysdir (i_sysdir.U):
3694 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3695 whether a C program should include <sys/dir.h>.
3697 i_sysfile (i_sysfile.U):
3698 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3699 whether a C program should include <sys/file.h> to get R_OK and friends.
3701 i_sysfilio (i_sysioctl.U):
3702 This variable conditionally defines the I_SYS_FILIO symbol, which
3703 indicates to the C program that <sys/filio.h> exists and should
3704 be included in preference to <sys/ioctl.h>.
3707 This variable conditionally defines I_SYS_IN, which indicates
3708 to the C program that it should include <sys/in.h> instead of
3711 i_sysioctl (i_sysioctl.U):
3712 This variable conditionally defines the I_SYS_IOCTL symbol, which
3713 indicates to the C program that <sys/ioctl.h> exists and should
3716 i_syslog (i_syslog.U):
3717 This variable conditionally defines the I_SYSLOG symbol,
3718 and indicates whether a C program should include <syslog.h>.
3720 i_sysmman (i_sysmman.U):
3721 This variable conditionally defines the I_SYS_MMAN symbol, and
3722 indicates whether a C program should include <sys/mman.h>.
3724 i_sysmode (i_sysmode.U):
3725 This variable conditionally defines the I_SYSMODE symbol,
3726 and indicates whether a C program should include <sys/mode.h>.
3728 i_sysmount (i_sysmount.U):
3729 This variable conditionally defines the I_SYSMOUNT symbol,
3730 and indicates whether a C program should include <sys/mount.h>.
3732 i_sysndir (i_sysndir.U):
3733 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3734 whether a C program should include <sys/ndir.h>.
3736 i_sysparam (i_sysparam.U):
3737 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3738 whether a C program should include <sys/param.h>.
3740 i_syspoll (i_syspoll.U):
3741 This variable conditionally defines the I_SYS_POLL symbol, which
3742 indicates to the C program that it should include <sys/poll.h>.
3744 i_sysresrc (i_sysresrc.U):
3745 This variable conditionally defines the I_SYS_RESOURCE symbol,
3746 and indicates whether a C program should include <sys/resource.h>.
3748 i_syssecrt (i_syssecrt.U):
3749 This variable conditionally defines the I_SYS_SECURITY symbol,
3750 and indicates whether a C program should include <sys/security.h>.
3752 i_sysselct (i_sysselct.U):
3753 This variable conditionally defines I_SYS_SELECT, which indicates
3754 to the C program that it should include <sys/select.h> in order to
3755 get the definition of struct timeval.
3757 i_syssockio (i_sysioctl.U):
3758 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3759 C program that socket ioctl codes may be found in <sys/sockio.h>
3760 instead of <sys/ioctl.h>.
3762 i_sysstat (i_sysstat.U):
3763 This variable conditionally defines the I_SYS_STAT symbol,
3764 and indicates whether a C program should include <sys/stat.h>.
3766 i_sysstatfs (i_sysstatfs.U):
3767 This variable conditionally defines the I_SYSSTATFS symbol,
3768 and indicates whether a C program should include <sys/statfs.h>.
3770 i_sysstatvfs (i_sysstatvfs.U):
3771 This variable conditionally defines the I_SYSSTATVFS symbol,
3772 and indicates whether a C program should include <sys/statvfs.h>.
3774 i_systime (i_time.U):
3775 This variable conditionally defines I_SYS_TIME, which indicates
3776 to the C program that it should include <sys/time.h>.
3778 i_systimek (i_time.U):
3779 This variable conditionally defines I_SYS_TIME_KERNEL, which
3780 indicates to the C program that it should include <sys/time.h>
3781 with KERNEL defined.
3783 i_systimes (i_systimes.U):
3784 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3785 whether a C program should include <sys/times.h>.
3787 i_systypes (i_systypes.U):
3788 This variable conditionally defines the I_SYS_TYPES symbol,
3789 and indicates whether a C program should include <sys/types.h>.
3791 i_sysuio (i_sysuio.U):
3792 This variable conditionally defines the I_SYSUIO symbol, and indicates
3793 whether a C program should include <sys/uio.h>.
3795 i_sysun (i_sysun.U):
3796 This variable conditionally defines I_SYS_UN, which indicates
3797 to the C program that it should include <sys/un.h> to get UNIX
3798 domain socket definitions.
3800 i_sysutsname (i_sysutsname.U):
3801 This variable conditionally defines the I_SYSUTSNAME symbol,
3802 and indicates whether a C program should include <sys/utsname.h>.
3804 i_sysvfs (i_sysvfs.U):
3805 This variable conditionally defines the I_SYSVFS symbol,
3806 and indicates whether a C program should include <sys/vfs.h>.
3808 i_syswait (i_syswait.U):
3809 This variable conditionally defines I_SYS_WAIT, which indicates
3810 to the C program that it should include <sys/wait.h>.
3812 i_termio (i_termio.U):
3813 This variable conditionally defines the I_TERMIO symbol, which
3814 indicates to the C program that it should include <termio.h> rather
3817 i_termios (i_termio.U):
3818 This variable conditionally defines the I_TERMIOS symbol, which
3819 indicates to the C program that the POSIX <termios.h> file is
3823 This variable conditionally defines I_TIME, which indicates
3824 to the C program that it should include <time.h>.
3826 i_unistd (i_unistd.U):
3827 This variable conditionally defines the I_UNISTD symbol, and indicates
3828 whether a C program should include <unistd.h>.
3830 i_ustat (i_ustat.U):
3831 This variable conditionally defines the I_USTAT symbol, and indicates
3832 whether a C program should include <ustat.h>.
3834 i_utime (i_utime.U):
3835 This variable conditionally defines the I_UTIME symbol, and indicates
3836 whether a C program should include <utime.h>.
3838 i_values (i_values.U):
3839 This variable conditionally defines the I_VALUES symbol, and indicates
3840 whether a C program may include <values.h> to get symbols like MAXLONG
3843 i_varargs (i_varhdr.U):
3844 This variable conditionally defines I_VARARGS, which indicates
3845 to the C program that it should include <varargs.h>.
3847 i_varhdr (i_varhdr.U):
3848 Contains the name of the header to be included to get va_dcl definition.
3849 Typically one of varargs.h or stdarg.h.
3851 i_vfork (i_vfork.U):
3852 This variable conditionally defines the I_VFORK symbol, and indicates
3853 whether a C program should include vfork.h.
3855 i_xlocale (d_newlocale.U):
3856 This symbol, if defined, indicates to the C program that it should
3857 include <xlocale.h> to get uselocale() and its friends
3859 ignore_versioned_solibs (libs.U):
3860 This variable should be non-empty if non-versioned shared
3861 libraries (libfoo.so.x.y) are to be ignored (because they
3862 cannot be linked against).
3864 inc_version_list (inc_version_list.U):
3865 This variable specifies the list of subdirectories in over
3866 which perl.c:incpush() and lib/lib.pm will automatically
3867 search when adding directories to @INC. The elements in
3868 the list are separated by spaces. This is only useful
3869 if you have a perl library directory tree structured like the
3870 default one. See INSTALL for how this works. The versioned
3871 site_perl directory was introduced in 5.005, so that is the
3872 lowest possible value.
3874 This list includes architecture-dependent directories back to
3875 version $api_versionstring (e.g. 5.5.640) and
3876 architecture-independent directories all the way back to
3879 inc_version_list_init (inc_version_list.U):
3880 This variable holds the same list as inc_version_list, but
3881 each item is enclosed in double quotes and separated by commas,
3882 suitable for use in the PERL_INC_VERSION_LIST initialization.
3885 This variable must precede the normal include path to get the
3886 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3887 Value can be "" or "/bsd43" on mips.
3890 This variable must precede the normal include path to get the
3891 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3892 Value can be "" or "/bsd43" on mips.
3895 This variable is defined but not used by Configure.
3896 The value is the empty string and is not useful.
3898 initialinstalllocation (bin.U):
3899 When userelocatableinc is true, this variable holds the location
3900 that make install should copy the perl binary to, with all the
3901 run-time relocatable paths calculated from this at install time.
3902 When used, it is initialized to the original value of binexp, and
3903 then binexp is set to '.../', as the other binaries are found
3904 relative to the perl binary.
3906 installarchlib (archlib.U):
3907 This variable is really the same as archlibexp but may differ on
3908 those systems using AFS. For extra portability, only this variable
3909 should be used in makefiles.
3912 This variable is the same as binexp unless AFS is running in which case
3913 the user is explicitly prompted for it. This variable should always
3914 be used in your makefiles for maximum portability.
3916 installhtml1dir (html1dir.U):
3917 This variable is really the same as html1direxp, unless you are
3918 using a different installprefix. For extra portability, you
3919 should only use this variable within your makefiles.
3921 installhtml3dir (html3dir.U):
3922 This variable is really the same as html3direxp, unless you are
3923 using a different installprefix. For extra portability, you
3924 should only use this variable within your makefiles.
3926 installman1dir (man1dir.U):
3927 This variable is really the same as man1direxp, unless you are using
3928 AFS in which case it points to the read/write location whereas
3929 man1direxp only points to the read-only access location. For extra
3930 portability, you should only use this variable within your makefiles.
3932 installman3dir (man3dir.U):
3933 This variable is really the same as man3direxp, unless you are using
3934 AFS in which case it points to the read/write location whereas
3935 man3direxp only points to the read-only access location. For extra
3936 portability, you should only use this variable within your makefiles.
3938 installprefix (installprefix.U):
3939 This variable holds the name of the directory below which
3940 "make install" will install the package. For most users, this
3941 is the same as prefix. However, it is useful for
3942 installing the software into a different (usually temporary)
3943 location after which it can be bundled up and moved somehow
3944 to the final location specified by prefix.
3946 installprefixexp (installprefix.U):
3947 This variable holds the full absolute path of installprefix
3948 with all ~-expansion done.
3950 installprivlib (privlib.U):
3951 This variable is really the same as privlibexp but may differ on
3952 those systems using AFS. For extra portability, only this variable
3953 should be used in makefiles.
3955 installscript (scriptdir.U):
3956 This variable is usually the same as scriptdirexp, unless you are on
3957 a system running AFS, in which case they may differ slightly. You
3958 should always use this variable within your makefiles for portability.
3960 installsitearch (sitearch.U):
3961 This variable is really the same as sitearchexp but may differ on
3962 those systems using AFS. For extra portability, only this variable
3963 should be used in makefiles.
3965 installsitebin (sitebin.U):
3966 This variable is usually the same as sitebinexp, unless you are on
3967 a system running AFS, in which case they may differ slightly. You
3968 should always use this variable within your makefiles for portability.
3970 installsitehtml1dir (sitehtml1dir.U):
3971 This variable is really the same as sitehtml1direxp, unless you are using
3972 AFS in which case it points to the read/write location whereas
3973 html1direxp only points to the read-only access location. For extra
3974 portability, you should only use this variable within your makefiles.
3976 installsitehtml3dir (sitehtml3dir.U):
3977 This variable is really the same as sitehtml3direxp, unless you are using
3978 AFS in which case it points to the read/write location whereas
3979 html3direxp only points to the read-only access location. For extra
3980 portability, you should only use this variable within your makefiles.
3982 installsitelib (sitelib.U):
3983 This variable is really the same as sitelibexp but may differ on
3984 those systems using AFS. For extra portability, only this variable
3985 should be used in makefiles.
3987 installsiteman1dir (siteman1dir.U):
3988 This variable is really the same as siteman1direxp, unless you are using
3989 AFS in which case it points to the read/write location whereas
3990 man1direxp only points to the read-only access location. For extra
3991 portability, you should only use this variable within your makefiles.
3993 installsiteman3dir (siteman3dir.U):
3994 This variable is really the same as siteman3direxp, unless you are using
3995 AFS in which case it points to the read/write location whereas
3996 man3direxp only points to the read-only access location. For extra
3997 portability, you should only use this variable within your makefiles.
3999 installsitescript (sitescript.U):
4000 This variable is usually the same as sitescriptexp, unless you are on
4001 a system running AFS, in which case they may differ slightly. You
4002 should always use this variable within your makefiles for portability.
4004 installstyle (installstyle.U):
4005 This variable describes the "style" of the perl installation.
4006 This is intended to be useful for tools that need to
4007 manipulate entire perl distributions. Perl itself doesn't use
4008 this to find its libraries -- the library directories are
4009 stored directly in Config.pm. Currently, there are only two
4010 styles: "lib" and "lib/perl5". The default library locations
4011 (e.g. privlib, sitelib) are either $prefix/lib or
4012 $prefix/lib/perl5. The former is useful if $prefix is a
4013 directory dedicated to perl (e.g. /opt/perl), while the latter
4014 is useful if $prefix is shared by many packages, e.g. if
4017 Unfortunately, while this "style" variable is used to set
4018 defaults for all three directory hierarchies (core, vendor, and
4019 site), there is no guarantee that the same style is actually
4020 appropriate for all those directories. For example, $prefix
4021 might be /opt/perl, but $siteprefix might be /usr/local.
4022 (Perhaps, in retrospect, the "lib" style should never have been
4023 supported, but it did seem like a nice idea at the time.)
4025 The situation is even less clear for tools such as MakeMaker
4026 that can be used to install additional modules into
4027 non-standard places. For example, if a user intends to install
4028 a module into a private directory (perhaps by setting PREFIX on
4029 the Makefile.PL command line), then there is no reason to
4030 assume that the Configure-time $installstyle setting will be
4031 relevant for that PREFIX.
4033 This may later be extended to include other information, so
4034 be careful with pattern-matching on the results.
4036 For compatibility with perl5.005 and earlier, the default
4037 setting is based on whether or not $prefix contains the string
4040 installusrbinperl (instubperl.U):
4041 This variable tells whether Perl should be installed also as
4042 /usr/bin/perl in addition to
4045 installvendorarch (vendorarch.U):
4046 This variable is really the same as vendorarchexp but may differ on
4047 those systems using AFS. For extra portability, only this variable
4048 should be used in makefiles.
4050 installvendorbin (vendorbin.U):
4051 This variable is really the same as vendorbinexp but may differ on
4052 those systems using AFS. For extra portability, only this variable
4053 should be used in makefiles.
4055 installvendorhtml1dir (vendorhtml1dir.U):
4056 This variable is really the same as vendorhtml1direxp but may differ on
4057 those systems using AFS. For extra portability, only this variable
4058 should be used in makefiles.
4060 installvendorhtml3dir (vendorhtml3dir.U):
4061 This variable is really the same as vendorhtml3direxp but may differ on
4062 those systems using AFS. For extra portability, only this variable
4063 should be used in makefiles.
4065 installvendorlib (vendorlib.U):
4066 This variable is really the same as vendorlibexp but may differ on
4067 those systems using AFS. For extra portability, only this variable
4068 should be used in makefiles.
4070 installvendorman1dir (vendorman1dir.U):
4071 This variable is really the same as vendorman1direxp but may differ on
4072 those systems using AFS. For extra portability, only this variable
4073 should be used in makefiles.
4075 installvendorman3dir (vendorman3dir.U):
4076 This variable is really the same as vendorman3direxp but may differ on
4077 those systems using AFS. For extra portability, only this variable
4078 should be used in makefiles.
4080 installvendorscript (vendorscript.U):
4081 This variable is really the same as vendorscriptexp but may differ on
4082 those systems using AFS. For extra portability, only this variable
4083 should be used in makefiles.
4085 intsize (intsize.U):
4086 This variable contains the value of the INTSIZE symbol, which
4087 indicates to the C program how many bytes there are in an int.
4089 issymlink (issymlink.U):
4090 This variable holds the test command to test for a symbolic link
4091 (if they are supported). Typical values include 'test -h' and
4094 ivdformat (perlxvf.U):
4095 This variable contains the format string used for printing
4096 a Perl IV as a signed decimal integer.
4099 This variable is the size of an IV in bytes.
4102 This variable contains the C type used for Perl's IV.
4104 known_extensions (Extensions.U):
4105 This variable holds a list of all extensions (both XS and non-xs)
4106 included in the package source distribution. This information is
4107 only really of use during the Perl build, as the list makes no
4108 distinction between extensions which were build and installed, and
4109 those which where not. See "extensions" for the list of extensions
4110 actually built and available.
4113 This variable is defined but not used by Configure.
4114 The value is the empty string and is not useful.
4117 This variable indicates the program to be used to link
4118 libraries for dynamic loading. On some systems, it is 'ld'.
4119 On ELF systems, it should be $cc. Mostly, we'll try to respect
4120 the hint file setting.
4122 ld_can_script (dlsrc.U):
4123 This variable shows if the loader accepts scripts in the form of
4124 -Wl,--version-script=ld.script. This is currently only supported
4125 for GNU ld on ELF in dynamic loading builds.
4127 lddlflags (dlsrc.U):
4128 This variable contains any special flags that might need to be
4129 passed to $ld to create a shared library suitable for dynamic
4130 loading. It is up to the makefile to use it. For hpux, it
4131 should be '-b'. For sunos 4.1, it is empty.
4133 ldflags (ccflags.U):
4134 This variable contains any additional C loader flags desired by
4135 the user. It is up to the Makefile to use this.
4137 ldflags_uselargefiles (uselfs.U):
4138 This variable contains the loader flags needed by large file builds
4139 and added to ldflags by hints files.
4141 ldlibpthname (libperl.U):
4142 This variable holds the name of the shared library
4143 search path, often LD_LIBRARY_PATH. To get an empty
4144 string, the hints file must set this to 'none'.
4147 This variable is used internally by Configure to determine the
4148 full pathname (if any) of the less program. After Configure runs,
4149 the value is reset to a plain "less" and is not useful.
4152 This is an old synonym for _a.
4155 This variable contains the location of the C library.
4157 libperl (libperl.U):
4158 The perl executable is obtained by linking perlmain.c with
4159 libperl, any static extensions (usually just DynaLoader),
4160 and any other libraries needed on this system. libperl
4161 is usually libperl.a, but can also be libperl.so.xxx if
4162 the user wishes to build a perl executable with a shared
4166 This variable holds the general path (space-separated) used to find
4167 libraries. It is intended to be used by other units.
4170 This variable holds the additional libraries we want to use.
4171 It is up to the Makefile to deal with it. The list can be empty.
4174 This variable holds the directory names aka dirnames of the libraries
4175 we found and accepted, duplicates are removed.
4178 This variable holds the filenames aka basenames of the libraries
4179 we found and accepted.
4182 This variable holds the full pathnames of the libraries
4183 we found and accepted.
4186 This variable holds the directory names probed for libraries.
4188 libswanted (Myinit.U):
4189 This variable holds a list of all the libraries we want to
4190 search. The order is chosen to pick up the c library
4191 ahead of ucb or bsd libraries for SVR4.
4193 libswanted_uselargefiles (uselfs.U):
4194 This variable contains the libraries needed by large file builds
4195 and added to ldflags by hints files. It is a space separated list
4196 of the library names without the "lib" prefix or any suffix, just
4200 This variable is defined but not used by Configure.
4201 The value is the empty string and is not useful.
4204 This variable is defined but not used by Configure.
4205 The value is the empty string and is not useful.
4207 lkflags (ccflags.U):
4208 This variable contains any additional C partial linker flags desired by
4209 the user. It is up to the Makefile to use this.
4212 This variable is used internally by Configure to determine the
4213 full pathname (if any) of the ln program. After Configure runs,
4214 the value is reset to a plain "ln" and is not useful.
4217 This variable holds the name of the command to make
4218 symbolic links (if they are supported). It can be used
4219 in the Makefile. It is either 'ln -s' or 'ln'
4221 localtime_r_proto (d_localtime_r.U):
4222 This variable encodes the prototype of localtime_r.
4223 It is zero if d_localtime_r is undef, and one of the
4224 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
4227 locincpth (ccflags.U):
4228 This variable contains a list of additional directories to be
4229 searched by the compiler. The appropriate '-I' directives will
4230 be added to ccflags. This is intended to simplify setting
4231 local directories from the Configure command line.
4232 It's not much, but it parallels the loclibpth stuff in libpth.U.
4234 loclibpth (libpth.U):
4235 This variable holds the paths (space-separated) used to find local
4236 libraries. It is prepended to libpth, and is intended to be easily
4237 set from the command line.
4239 longdblinfbytes (infnan.U):
4240 This variable contains comma-separated list of hexadecimal bytes
4241 for the long double precision infinity.
4243 longdblkind (d_longdbl.U):
4244 This variable, if defined, encodes the type of a long double:
4246 1 = IEEE 754 128-bit little endian,
4247 2 = IEEE 754 128-bit big endian,
4248 3 = x86 80-bit little endian,
4249 4 = x86 80-bit big endian,
4250 5 = double-double 128-bit little endian,
4251 6 = double-double 128-bit big endian,
4252 7 = 128-bit mixed-endian double-double (64-bit LEs in BE),
4253 8 = 128-bit mixed-endian double-double (64-bit BEs in LE),
4254 9 = 128-bit PDP-style mixed-endian long doubles,
4255 -1 = unknown format.
4257 longdblmantbits (mantbits.U):
4258 This symbol, if defined, tells how many mantissa bits
4259 there are in long double precision floating point format.
4260 Note that this can be LDBL_MANT_DIG minus one,
4261 since LDBL_MANT_DIG can include the IEEE 754 implicit bit.
4262 The common x86-style 80-bit long double does not have
4265 longdblnanbytes (infnan.U):
4266 This variable contains comma-separated list of hexadecimal bytes
4267 for the long double precision not-a-number.
4269 longdblsize (d_longdbl.U):
4270 This variable contains the value of the LONG_DOUBLESIZE symbol, which
4271 indicates to the C program how many bytes there are in a long double,
4272 if this system supports long doubles. Note that this is
4273 sizeof(long double), which may include unused bytes.
4275 longlongsize (d_longlong.U):
4276 This variable contains the value of the LONGLONGSIZE symbol, which
4277 indicates to the C program how many bytes there are in a long long,
4278 if this system supports long long.
4280 longsize (intsize.U):
4281 This variable contains the value of the LONGSIZE symbol, which
4282 indicates to the C program how many bytes there are in a long.
4285 This variable is defined but not used by Configure.
4286 The value is the empty string and is not useful.
4289 This variable is defined but not used by Configure.
4290 The value is the empty string and is not useful.
4293 This variable is used internally by Configure to determine the
4294 full pathname (if any) of the ls program. After Configure runs,
4295 the value is reset to a plain "ls" and is not useful.
4297 lseeksize (lseektype.U):
4298 This variable defines lseektype to be something like off_t, long,
4299 or whatever type is used to declare lseek offset's type in the
4300 kernel (which also appears to be lseek's return type).
4302 lseektype (lseektype.U):
4303 This variable defines lseektype to be something like off_t, long,
4304 or whatever type is used to declare lseek offset's type in the
4305 kernel (which also appears to be lseek's return type).
4308 This variable is defined but not used by Configure.
4309 The value is the empty string and is not useful.
4312 This variable is defined but not used by Configure.
4313 The value is the empty string and is not useful.
4316 This variable is used internally by Configure to determine the
4317 full pathname (if any) of the make program. After Configure runs,
4318 the value is reset to a plain "make" and is not useful.
4320 make_set_make (make.U):
4321 Some versions of 'make' set the variable MAKE. Others do not.
4322 This variable contains the string to be included in Makefile.SH
4323 so that MAKE is set if needed, and not if not needed.
4324 Possible values are:
4326 make_set_make='#' # If your make program handles this for you,
4328 make_set_make="MAKE=$make" # if it doesn't.
4330 This uses a comment character so that we can distinguish a
4331 'set' value (from a previous config.sh or Configure '-D' option)
4332 from an uncomputed value.
4334 mallocobj (mallocsrc.U):
4335 This variable contains the name of the malloc.o that this package
4336 generates, if that malloc.o is preferred over the system malloc.
4337 Otherwise the value is null. This variable is intended for generating
4338 Makefiles. See mallocsrc.
4340 mallocsrc (mallocsrc.U):
4341 This variable contains the name of the malloc.c that comes with
4342 the package, if that malloc.c is preferred over the system malloc.
4343 Otherwise the value is null. This variable is intended for generating
4346 malloctype (mallocsrc.U):
4347 This variable contains the kind of ptr returned by malloc and realloc.
4349 man1dir (man1dir.U):
4350 This variable contains the name of the directory in which manual
4351 source pages are to be put. It is the responsibility of the
4352 Makefile.SH to get the value of this into the proper command.
4353 You must be prepared to do the ~name expansion yourself.
4355 man1direxp (man1dir.U):
4356 This variable is the same as the man1dir variable, but is filename
4357 expanded at configuration time, for convenient use in makefiles.
4359 man1ext (man1dir.U):
4360 This variable contains the extension that the manual page should
4361 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
4364 man3dir (man3dir.U):
4365 This variable contains the name of the directory in which manual
4366 source pages are to be put. It is the responsibility of the
4367 Makefile.SH to get the value of this into the proper command.
4368 You must be prepared to do the ~name expansion yourself.
4370 man3direxp (man3dir.U):
4371 This variable is the same as the man3dir variable, but is filename
4372 expanded at configuration time, for convenient use in makefiles.
4374 man3ext (man3dir.U):
4375 This variable contains the extension that the manual page should
4376 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
4379 mips_type (usrinc.U):
4380 This variable holds the environment type for the mips system.
4381 Possible values are "BSD 4.3" and "System V".
4383 mistrustnm (Csym.U):
4384 This variable can be used to establish a fallthrough for the cases
4385 where nm fails to find a symbol. If usenm is false or usenm is true
4386 and mistrustnm is false, this variable has no effect. If usenm is true
4387 and mistrustnm is "compile", a test program will be compiled to try to
4388 find any symbol that can't be located via nm lookup. If mistrustnm is
4389 "run", the test program will be run as well as being compiled.
4392 This variable is used internally by Configure to determine the
4393 full pathname (if any) of the mkdir program. After Configure runs,
4394 the value is reset to a plain "mkdir" and is not useful.
4396 mmaptype (d_mmap.U):
4397 This symbol contains the type of pointer returned by mmap()
4398 (and simultaneously the type of the first argument).
4399 It can be 'void *' or 'caddr_t'.
4401 modetype (modetype.U):
4402 This variable defines modetype to be something like mode_t,
4403 int, unsigned short, or whatever type is used to declare file
4404 modes for system calls.
4407 This variable is used internally by Configure to determine the
4408 full pathname (if any) of the more program. After Configure runs,
4409 the value is reset to a plain "more" and is not useful.
4411 multiarch (multiarch.U):
4412 This variable conditionally defines the MULTIARCH symbol
4413 which signifies the presence of multiplatform files.
4414 This is normally set by hints files.
4417 This variable is defined but not used by Configure.
4418 The value is the empty string and is not useful.
4420 myarchname (archname.U):
4421 This variable holds the architecture name computed by Configure in
4422 a previous run. It is not intended to be perused by any user and
4423 should never be set in a hint file.
4425 mydomain (myhostname.U):
4426 This variable contains the eventual value of the MYDOMAIN symbol,
4427 which is the domain of the host the program is going to run on.
4428 The domain must be appended to myhostname to form a complete host name.
4429 The dot comes with mydomain, and need not be supplied by the program.
4431 myhostname (myhostname.U):
4432 This variable contains the eventual value of the MYHOSTNAME symbol,
4433 which is the name of the host the program is going to run on.
4434 The domain is not kept with hostname, but must be gotten from mydomain.
4435 The dot comes with mydomain, and need not be supplied by the program.
4437 myuname (Oldconfig.U):
4438 The output of 'uname -a' if available, otherwise the hostname.
4439 The whole thing is then lower-cased and slashes and single quotes are
4443 This variable contains the '-n' flag if that is what causes the echo
4444 command to suppress newline. Otherwise it is null. Correct usage is
4445 $echo $n "prompt for a question: $c".
4447 need_va_copy (need_va_copy.U):
4448 This symbol, if defined, indicates that the system stores
4449 the variable argument list datatype, va_list, in a format
4450 that cannot be copied by simple assignment, so that some
4451 other means must be used when copying is required.
4452 As such systems vary in their provision (or non-provision)
4453 of copying mechanisms, handy.h defines a platform-
4454 independent macro, Perl_va_copy(src, dst), to do the job.
4456 netdb_hlen_type (netdbtype.U):
4457 This variable holds the type used for the 2nd argument to
4458 gethostbyaddr(). Usually, this is int or size_t or unsigned.
4459 This is only useful if you have gethostbyaddr(), naturally.
4461 netdb_host_type (netdbtype.U):
4462 This variable holds the type used for the 1st argument to
4463 gethostbyaddr(). Usually, this is char * or void *, possibly
4464 with or without a const prefix.
4465 This is only useful if you have gethostbyaddr(), naturally.
4467 netdb_name_type (netdbtype.U):
4468 This variable holds the type used for the argument to
4469 gethostbyname(). Usually, this is char * or const char *.
4470 This is only useful if you have gethostbyname(), naturally.
4472 netdb_net_type (netdbtype.U):
4473 This variable holds the type used for the 1st argument to
4474 getnetbyaddr(). Usually, this is int or long.
4475 This is only useful if you have getnetbyaddr(), naturally.
4478 This variable is used internally by Configure to determine the
4479 full pathname (if any) of the nm program. After Configure runs,
4480 the value is reset to a plain "nm" and is not useful.
4483 This variable holds the options that may be necessary for nm.
4485 nm_so_opt (usenm.U):
4486 This variable holds the options that may be necessary for nm
4487 to work on a shared library but that can not be used on an
4488 archive library. Currently, this is only used by Linux, where
4489 nm --dynamic is *required* to get symbols from an ELF library which
4490 has been stripped, but nm --dynamic is *fatal* on an archive library.
4491 Maybe Linux should just always set usenm=false.
4493 nonxs_ext (Extensions.U):
4494 This variable holds a list of all non-xs extensions built and
4495 installed by the package. By default, all non-xs extensions
4496 distributed will be built, with the exception of platform-specific
4497 extensions (currently only one VMS specific extension).
4500 This variable is used internally by Configure to determine the
4501 full pathname (if any) of the nroff program. After Configure runs,
4502 the value is reset to a plain "nroff" and is not useful.
4504 nv_overflows_integers_at (perlxv.U):
4505 This variable gives the largest integer value that NVs can hold
4506 as a constant floating point expression.
4507 If it could not be determined, it holds the value 0.
4509 nv_preserves_uv_bits (perlxv.U):
4510 This variable indicates how many of bits type uvtype
4511 a variable nvtype can preserve.
4513 nveformat (perlxvf.U):
4514 This variable contains the format string used for printing
4515 a Perl NV using %e-ish floating point format.
4517 nvEUformat (perlxvf.U):
4518 This variable contains the format string used for printing
4519 a Perl NV using %E-ish floating point format.
4521 nvfformat (perlxvf.U):
4522 This variable contains the format string used for printing
4523 a Perl NV using %f-ish floating point format.
4525 nvFUformat (perlxvf.U):
4526 This variable contains the format string used for printing
4527 a Perl NV using %F-ish floating point format.
4529 nvgformat (perlxvf.U):
4530 This variable contains the format string used for printing
4531 a Perl NV using %g-ish floating point format.
4533 nvGUformat (perlxvf.U):
4534 This variable contains the format string used for printing
4535 a Perl NV using %G-ish floating point format.
4537 nvmantbits (mantbits.U):
4538 This variable tells how many bits the mantissa of a Perl NV has,
4539 not including the possible implicit bit.
4542 This variable is the size of a Perl NV in bytes.
4543 Note that some floating point formats have unused bytes.
4546 This variable contains the C type used for Perl's NV.
4548 o_nonblock (nblock_io.U):
4549 This variable bears the symbol value to be used during open() or fcntl()
4550 to turn on non-blocking I/O for a file descriptor. If you wish to switch
4551 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
4552 but that is only supported by some devices.
4555 This is an old synonym for _o.
4557 old_pthread_create_joinable (d_pthrattrj.U):
4558 This variable defines the constant to use for creating joinable
4559 (aka undetached) pthreads. Unused if pthread.h defines
4560 PTHREAD_CREATE_JOINABLE. If used, possible values are
4561 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
4563 optimize (ccflags.U):
4564 This variable contains any optimizer/debugger flag that should be used.
4565 It is up to the Makefile to use it.
4567 orderlib (orderlib.U):
4568 This variable is "true" if the components of libraries must be ordered
4569 (with `lorder $* | tsort`) before placing them in an archive. Set to
4570 "false" if ranlib or ar can generate random libraries.
4572 osname (Oldconfig.U):
4573 This variable contains the operating system name (e.g. sunos,
4574 solaris, hpux, etc.). It can be useful later on for setting
4575 defaults. Any spaces are replaced with underscores. It is set
4576 to a null string if we can't figure it out.
4578 osvers (Oldconfig.U):
4579 This variable contains the operating system version (e.g.
4580 4.1.3, 5.2, etc.). It is primarily used for helping select
4581 an appropriate hints file, but might be useful elsewhere for
4582 setting defaults. It is set to '' if we can't figure it out.
4583 We try to be flexible about how much of the version number
4584 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
4585 same for this package, hints files might just be os_4.0 or
4586 os_4.1, etc., not keeping separate files for each little release.
4588 otherlibdirs (otherlibdirs.U):
4589 This variable contains a colon-separated set of paths for the perl
4590 binary to search for additional library files or modules.
4591 These directories will be tacked to the end of @INC.
4592 Perl will automatically search below each path for version-
4593 and architecture-specific directories. See inc_version_list
4595 A value of ' ' means 'none' and is used to preserve this value
4596 for the next run through Configure.
4598 package (package.U):
4599 This variable contains the name of the package being constructed.
4600 It is primarily intended for the use of later Configure units.
4603 This variable contains the name of the preferred pager on the system.
4604 Usual values are (the full pathnames of) more, less, pg, or cat.
4607 This variable contains a command that produces the text of the
4608 /etc/passwd file. This is normally "cat /etc/passwd", but can be
4609 "ypcat passwd" when NIS is used.
4610 On some systems, such as os390, there may be no equivalent
4611 command, in which case this variable is unset.
4613 patchlevel (patchlevel.U):
4614 The patchlevel level of this package.
4615 The value of patchlevel comes from the patchlevel.h file.
4616 In a version number such as 5.6.1, this is the "6".
4617 In patchlevel.h, this is referred to as "PERL_VERSION".
4620 This is an old synonym for p_ in Head.U, the character
4621 used to separate elements in the command shell search PATH.
4624 This variable is used internally by Configure to determine the
4625 full pathname (if any) of the perl program. After Configure runs,
4626 the value is reset to a plain "perl" and is not useful.
4629 This variable contains the full path (if any) to a previously
4630 installed perl5.005 or later suitable for running the script
4631 to determine inc_version_list.
4633 PERL_API_REVISION (patchlevel.h):
4634 This number describes the earliest compatible PERL_REVISION of
4635 Perl ("compatibility" here being defined as sufficient binary/API
4636 compatibility to run XS code built with the older version).
4637 Normally this does not change across maintenance releases.
4638 Please read the comment in patchlevel.h.
4640 PERL_API_SUBVERSION (patchlevel.h):
4641 This number describes the earliest compatible PERL_SUBVERSION of
4642 Perl ("compatibility" here being defined as sufficient binary/API
4643 compatibility to run XS code built with the older version).
4644 Normally this does not change across maintenance releases.
4645 Please read the comment in patchlevel.h.
4647 PERL_API_VERSION (patchlevel.h):
4648 This number describes the earliest compatible PERL_VERSION of
4649 Perl ("compatibility" here being defined as sufficient binary/API
4650 compatibility to run XS code built with the older version).
4651 Normally this does not change across maintenance releases.
4652 Please read the comment in patchlevel.h.
4654 PERL_CONFIG_SH (Oldsyms.U):
4655 This is set to 'true' in config.sh so that a shell script
4656 sourcing config.sh can tell if it has been sourced already.
4658 PERL_PATCHLEVEL (Oldsyms.U):
4659 This symbol reflects the patchlevel, if available. Will usually
4660 come from the .patch file, which is available when the perl
4661 source tree was fetched with rsync.
4663 perl_patchlevel (patchlevel.U):
4664 This is the Perl patch level, a numeric change identifier,
4665 as defined by whichever source code maintenance system
4666 is used to maintain the patches; currently Perforce.
4667 It does not correlate with the Perl version numbers or
4668 the maintenance versus development dichotomy except
4669 by also being increasing.
4671 PERL_REVISION (Oldsyms.U):
4672 In a Perl version number such as 5.6.2, this is the 5.
4673 This value is manually set in patchlevel.h
4675 perl_static_inline (d_static_inline.U):
4676 This variable defines the PERL_STATIC_INLINE symbol to
4677 the best-guess incantation to use for static inline functions.
4678 Possibilities include
4680 static __inline__ (gcc -ansi)
4681 static __inline (MSVC)
4682 static _inline (older MSVC)
4683 static (c89 compilers)
4685 PERL_SUBVERSION (Oldsyms.U):
4686 In a Perl version number such as 5.6.2, this is the 2.
4687 Values greater than 50 represent potentially unstable
4688 development subversions.
4689 This value is manually set in patchlevel.h
4691 PERL_VERSION (Oldsyms.U):
4692 In a Perl version number such as 5.6.2, this is the 6.
4693 This value is manually set in patchlevel.h
4695 perladmin (perladmin.U):
4696 Electronic mail address of the perl5 administrator.
4699 The list of libraries needed by Perl only (any libraries needed
4700 by extensions only will by dropped, if using dynamic loading).
4702 perlpath (perlpath.U):
4703 This variable contains the eventual value of the PERLPATH symbol,
4704 which contains the name of the perl interpreter to be used in
4705 shell scripts and in the "eval 'exec'" idiom. This variable is
4706 not necessarily the pathname of the file containing the perl
4707 interpreter; you must append the executable extension (_exe) if
4708 it is not already present. Note that Perl code that runs during
4709 the Perl build process cannot reference this variable, as Perl
4710 may not have been installed, or even if installed, may be a
4711 different version of Perl.
4714 This variable is used internally by Configure to determine the
4715 full pathname (if any) of the pg program. After Configure runs,
4716 the value is reset to a plain "pg" and is not useful.
4718 phostname (myhostname.U):
4719 This variable contains the eventual value of the PHOSTNAME symbol,
4720 which is a command that can be fed to popen() to get the host name.
4721 The program should probably not presume that the domain is or isn't
4724 pidtype (pidtype.U):
4725 This variable defines PIDTYPE to be something like pid_t, int,
4726 ushort, or whatever type is used to declare process ids in the kernel.
4729 Holds the private path used by Configure to find out the libraries.
4730 Its value is prepend to libpth. This variable takes care of special
4731 machines, like the mips. Usually, it should be empty.
4734 This variable is defined but not used by Configure.
4735 The value is the empty string and is not useful.
4738 This variable is defined but not used by Configure.
4739 The value is the empty string and is not useful.
4742 This variable holds the name of the directory below which the
4743 user will install the package. Usually, this is /usr/local, and
4744 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4745 man pages in /usr/local/man, etc. It is only used to set defaults
4746 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4748 prefixexp (prefix.U):
4749 This variable holds the full absolute path of the directory below
4750 which the user will install the package. Derived from prefix.
4752 privlib (privlib.U):
4753 This variable contains the eventual value of the PRIVLIB symbol,
4754 which is the name of the private library for this package. It may
4755 have a ~ on the front. It is up to the makefile to eventually create
4756 this directory while performing installation (with ~ substitution).
4758 privlibexp (privlib.U):
4759 This variable is the ~name expanded version of privlib, so that you
4760 may use it directly in Makefiles or shell scripts.
4762 procselfexe (d_procselfexe.U):
4763 If d_procselfexe is defined, $procselfexe is the filename
4764 of the symbolic link pointing to the absolute pathname of
4765 the executing program.
4767 prototype (prototype.U):
4768 This variable holds the eventual value of CAN_PROTOTYPE, which
4769 indicates the C compiler can handle function prototypes.
4771 ptrsize (ptrsize.U):
4772 This variable contains the value of the PTRSIZE symbol, which
4773 indicates to the C program how many bytes there are in a pointer.
4775 quadkind (quadtype.U):
4776 This variable, if defined, encodes the type of a quad:
4777 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4779 quadtype (quadtype.U):
4780 This variable defines Quad_t to be something like long, int,
4781 long long, int64_t, or whatever type is used for 64-bit integers.
4783 randbits (randfunc.U):
4784 Indicates how many bits are produced by the function used to
4785 generate normalized random numbers.
4787 randfunc (randfunc.U):
4788 Indicates the name of the random number function to use.
4789 Values include drand48, random, and rand. In C programs,
4790 the 'Drand01' macro is defined to generate uniformly distributed
4791 random numbers over the range [0., 1.[ (see drand01 and nrand).
4793 random_r_proto (d_random_r.U):
4794 This variable encodes the prototype of random_r.
4795 It is zero if d_random_r is undef, and one of the
4796 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4799 randseedtype (randfunc.U):
4800 Indicates the type of the argument of the seedfunc.
4802 ranlib (orderlib.U):
4803 This variable is set to the pathname of the ranlib program, if it is
4804 needed to generate random libraries. Set to ":" if ar can generate
4805 random libraries or if random libraries are not supported
4807 rd_nodata (nblock_io.U):
4808 This variable holds the return code from read() when no data is
4809 present. It should be -1, but some systems return 0 when O_NDELAY is
4810 used, which is a shame because you cannot make the difference between
4811 no data and an EOF.. Sigh!
4813 readdir64_r_proto (d_readdir64_r.U):
4814 This variable encodes the prototype of readdir64_r.
4815 It is zero if d_readdir64_r is undef, and one of the
4816 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4819 readdir_r_proto (d_readdir_r.U):
4820 This variable encodes the prototype of readdir_r.
4821 It is zero if d_readdir_r is undef, and one of the
4822 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4825 revision (patchlevel.U):
4826 The value of revision comes from the patchlevel.h file.
4827 In a version number such as 5.6.1, this is the "5".
4828 In patchlevel.h, this is referred to as "PERL_REVISION".
4831 This variable is used internally by Configure to determine the
4832 full pathname (if any) of the rm program. After Configure runs,
4833 the value is reset to a plain "rm" and is not useful.
4836 This is a cleanup variable for try test programs.
4837 Internal Configure use only.
4840 This variable is defined but not used by Configure.
4841 The value is the empty string and is not useful.
4844 This variable contains the command used by Configure
4845 to copy and execute a cross-compiled executable in the
4846 target host. Useful and available only during Perl build.
4847 Empty string '' if not cross-compiling.
4850 This variable contains 'true' or 'false' depending whether the
4851 nm extraction should be performed or not, according to the value
4852 of usenm and the flags on the Configure command line.
4854 sched_yield (d_pthread_y.U):
4855 This variable defines the way to yield the execution
4856 of the current thread.
4858 scriptdir (scriptdir.U):
4859 This variable holds the name of the directory in which the user wants
4860 to put publicly scripts for the package in question. It is either
4861 the same directory as for binaries, or a special one that can be
4862 mounted across different architectures, like /usr/share. Programs
4863 must be prepared to deal with ~name expansion.
4865 scriptdirexp (scriptdir.U):
4866 This variable is the same as scriptdir, but is filename expanded
4867 at configuration time, for programs not wanting to bother with it.
4870 This variable is used internally by Configure to determine the
4871 full pathname (if any) of the sed program. After Configure runs,
4872 the value is reset to a plain "sed" and is not useful.
4874 seedfunc (randfunc.U):
4875 Indicates the random number generating seed function.
4876 Values include srand48, srandom, and srand.
4878 selectminbits (selectminbits.U):
4879 This variable holds the minimum number of bits operated by select.
4880 That is, if you do select(n, ...), how many bits at least will be
4881 cleared in the masks if some activity is detected. Usually this
4882 is either n or 32*ceil(n/32), especially many little-endians do
4883 the latter. This is only useful if you have select(), naturally.
4885 selecttype (selecttype.U):
4886 This variable holds the type used for the 2nd, 3rd, and 4th
4887 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4888 is defined, and 'int *' otherwise. This is only useful if you
4889 have select(), naturally.
4892 This variable is defined but not used by Configure.
4893 The value is the empty string and is not useful.
4895 setgrent_r_proto (d_setgrent_r.U):
4896 This variable encodes the prototype of setgrent_r.
4897 It is zero if d_setgrent_r is undef, and one of the
4898 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4901 sethostent_r_proto (d_sethostent_r.U):
4902 This variable encodes the prototype of sethostent_r.
4903 It is zero if d_sethostent_r is undef, and one of the
4904 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4907 setlocale_r_proto (d_setlocale_r.U):
4908 This variable encodes the prototype of setlocale_r.
4909 It is zero if d_setlocale_r is undef, and one of the
4910 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4913 setnetent_r_proto (d_setnetent_r.U):
4914 This variable encodes the prototype of setnetent_r.
4915 It is zero if d_setnetent_r is undef, and one of the
4916 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4919 setprotoent_r_proto (d_setprotoent_r.U):
4920 This variable encodes the prototype of setprotoent_r.
4921 It is zero if d_setprotoent_r is undef, and one of the
4922 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4925 setpwent_r_proto (d_setpwent_r.U):
4926 This variable encodes the prototype of setpwent_r.
4927 It is zero if d_setpwent_r is undef, and one of the
4928 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4931 setservent_r_proto (d_setservent_r.U):
4932 This variable encodes the prototype of setservent_r.
4933 It is zero if d_setservent_r is undef, and one of the
4934 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4937 sGMTIME_max (time_size.U):
4938 This variable defines the maximum value of the time_t offset that
4939 the system function gmtime () accepts
4941 sGMTIME_min (time_size.U):
4942 This variable defines the minimum value of the time_t offset that
4943 the system function gmtime () accepts
4946 This variable contains the full pathname of the shell used
4947 on this system to execute Bourne shell scripts. Usually, this will be
4948 /bin/sh, though it's possible that some systems will have /bin/ksh,
4949 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4951 This unit comes before Options.U, so you can't set sh with a '-D'
4952 option, though you can override this (and startsh)
4953 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4956 This variable is defined but not used by Configure.
4957 The value is the empty string and is not useful.
4959 sharpbang (spitshell.U):
4960 This variable contains the string #! if this system supports that
4963 shmattype (d_shmat.U):
4964 This symbol contains the type of pointer returned by shmat().
4965 It can be 'void *' or 'char *'.
4967 shortsize (intsize.U):
4968 This variable contains the value of the SHORTSIZE symbol which
4969 indicates to the C program how many bytes there are in a short.
4971 shrpenv (libperl.U):
4972 If the user builds a shared libperl.so, then we need to tell the
4973 'perl' executable where it will be able to find the installed libperl.so.
4974 One way to do this on some systems is to set the environment variable
4975 LD_RUN_PATH to the directory that will be the final location of the
4976 shared libperl.so. The makefile can use this with something like
4977 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4979 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4982 See the main perl Makefile.SH for actual working usage.
4983 Alternatively, we might be able to use a command line option such
4984 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4985 $archlibexp/CORE (Linux).
4987 shsharp (spitshell.U):
4988 This variable tells further Configure units whether your sh can
4991 sig_count (sig_name.U):
4992 This variable holds a number larger than the largest valid
4993 signal number. This is usually the same as the NSIG macro.
4995 sig_name (sig_name.U):
4996 This variable holds the signal names, space separated. The leading
4997 SIG in signal name is removed. A ZERO is prepended to the list.
4998 This is currently not used, sig_name_init is used instead.
5000 sig_name_init (sig_name.U):
5001 This variable holds the signal names, enclosed in double quotes and
5002 separated by commas, suitable for use in the SIG_NAME definition
5003 below. A "ZERO" is prepended to the list, and the list is
5004 terminated with a plain 0. The leading SIG in signal names
5005 is removed. See sig_num.
5007 sig_num (sig_name.U):
5008 This variable holds the signal numbers, space separated. A ZERO is
5009 prepended to the list (corresponding to the fake SIGZERO).
5010 Those numbers correspond to the value of the signal listed
5011 in the same place within the sig_name list.
5012 This is currently not used, sig_num_init is used instead.
5014 sig_num_init (sig_name.U):
5015 This variable holds the signal numbers, enclosed in double quotes and
5016 separated by commas, suitable for use in the SIG_NUM definition
5017 below. A "ZERO" is prepended to the list, and the list is
5018 terminated with a plain 0.
5020 sig_size (sig_name.U):
5021 This variable contains the number of elements of the sig_name
5024 signal_t (d_voidsig.U):
5025 This variable holds the type of the signal handler (void or int).
5027 sitearch (sitearch.U):
5028 This variable contains the eventual value of the SITEARCH symbol,
5029 which is the name of the private library for this package. It may
5030 have a ~ on the front. It is up to the makefile to eventually create
5031 this directory while performing installation (with ~ substitution).
5032 The standard distribution will put nothing in this directory.
5033 After perl has been installed, users may install their own local
5034 architecture-dependent modules in this directory with
5035 MakeMaker Makefile.PL
5036 or equivalent. See INSTALL for details.
5038 sitearchexp (sitearch.U):
5039 This variable is the ~name expanded version of sitearch, so that you
5040 may use it directly in Makefiles or shell scripts.
5042 sitebin (sitebin.U):
5043 This variable holds the name of the directory in which the user wants
5044 to put add-on publicly executable files for the package in question. It
5045 is most often a local directory such as /usr/local/bin. Programs using
5046 this variable must be prepared to deal with ~name substitution.
5047 The standard distribution will put nothing in this directory.
5048 After perl has been installed, users may install their own local
5049 executables in this directory with
5050 MakeMaker Makefile.PL
5051 or equivalent. See INSTALL for details.
5053 sitebinexp (sitebin.U):
5054 This is the same as the sitebin variable, but is filename expanded at
5055 configuration time, for use in your makefiles.
5057 sitehtml1dir (sitehtml1dir.U):
5058 This variable contains the name of the directory in which site-specific
5059 html source pages are to be put. It is the responsibility of the
5060 Makefile.SH to get the value of this into the proper command.
5061 You must be prepared to do the ~name expansion yourself.
5062 The standard distribution will put nothing in this directory.
5063 After perl has been installed, users may install their own local
5064 html pages in this directory with
5065 MakeMaker Makefile.PL
5066 or equivalent. See INSTALL for details.
5068 sitehtml1direxp (sitehtml1dir.U):
5069 This variable is the same as the sitehtml1dir variable, but is filename
5070 expanded at configuration time, for convenient use in makefiles.
5072 sitehtml3dir (sitehtml3dir.U):
5073 This variable contains the name of the directory in which site-specific
5074 library html source pages are to be put. It is the responsibility of the
5075 Makefile.SH to get the value of this into the proper command.
5076 You must be prepared to do the ~name expansion yourself.
5077 The standard distribution will put nothing in this directory.
5078 After perl has been installed, users may install their own local
5079 library html pages in this directory with
5080 MakeMaker Makefile.PL
5081 or equivalent. See INSTALL for details.
5083 sitehtml3direxp (sitehtml3dir.U):
5084 This variable is the same as the sitehtml3dir variable, but is filename
5085 expanded at configuration time, for convenient use in makefiles.
5087 sitelib (sitelib.U):
5088 This variable contains the eventual value of the SITELIB symbol,
5089 which is the name of the private library for this package. It may
5090 have a ~ on the front. It is up to the makefile to eventually create
5091 this directory while performing installation (with ~ substitution).
5092 The standard distribution will put nothing in this directory.
5093 After perl has been installed, users may install their own local
5094 architecture-independent modules in this directory with
5095 MakeMaker Makefile.PL
5096 or equivalent. See INSTALL for details.
5098 sitelib_stem (sitelib.U):
5099 This variable is $sitelibexp with any trailing version-specific component
5100 removed. The elements in inc_version_list (inc_version_list.U) can
5101 be tacked onto this variable to generate a list of directories to search.
5103 sitelibexp (sitelib.U):
5104 This variable is the ~name expanded version of sitelib, so that you
5105 may use it directly in Makefiles or shell scripts.
5107 siteman1dir (siteman1dir.U):
5108 This variable contains the name of the directory in which site-specific
5109 manual source pages are to be put. It is the responsibility of the
5110 Makefile.SH to get the value of this into the proper command.
5111 You must be prepared to do the ~name expansion yourself.
5112 The standard distribution will put nothing in this directory.
5113 After perl has been installed, users may install their own local
5114 man1 pages in this directory with
5115 MakeMaker Makefile.PL
5116 or equivalent. See INSTALL for details.
5118 siteman1direxp (siteman1dir.U):
5119 This variable is the same as the siteman1dir variable, but is filename
5120 expanded at configuration time, for convenient use in makefiles.
5122 siteman3dir (siteman3dir.U):
5123 This variable contains the name of the directory in which site-specific
5124 library man source pages are to be put. It is the responsibility of the
5125 Makefile.SH to get the value of this into the proper command.
5126 You must be prepared to do the ~name expansion yourself.
5127 The standard distribution will put nothing in this directory.
5128 After perl has been installed, users may install their own local
5129 man3 pages in this directory with
5130 MakeMaker Makefile.PL
5131 or equivalent. See INSTALL for details.
5133 siteman3direxp (siteman3dir.U):
5134 This variable is the same as the siteman3dir variable, but is filename
5135 expanded at configuration time, for convenient use in makefiles.
5137 siteprefix (siteprefix.U):
5138 This variable holds the full absolute path of the directory below
5139 which the user will install add-on packages.
5140 See INSTALL for usage and examples.
5142 siteprefixexp (siteprefix.U):
5143 This variable holds the full absolute path of the directory below
5144 which the user will install add-on packages. Derived from siteprefix.
5146 sitescript (sitescript.U):
5147 This variable holds the name of the directory in which the user wants
5148 to put add-on publicly executable files for the package in question. It
5149 is most often a local directory such as /usr/local/bin. Programs using
5150 this variable must be prepared to deal with ~name substitution.
5151 The standard distribution will put nothing in this directory.
5152 After perl has been installed, users may install their own local
5153 scripts in this directory with
5154 MakeMaker Makefile.PL
5155 or equivalent. See INSTALL for details.
5157 sitescriptexp (sitescript.U):
5158 This is the same as the sitescript variable, but is filename expanded at
5159 configuration time, for use in your makefiles.
5161 sizesize (sizesize.U):
5162 This variable contains the size of a sizetype in bytes.
5164 sizetype (sizetype.U):
5165 This variable defines sizetype to be something like size_t,
5166 unsigned long, or whatever type is used to declare length
5167 parameters for string functions.
5170 This variable is defined but not used by Configure.
5171 The value is the empty string and is not useful.
5173 sLOCALTIME_max (time_size.U):
5174 This variable defines the maximum value of the time_t offset that
5175 the system function localtime () accepts
5177 sLOCALTIME_min (time_size.U):
5178 This variable defines the minimum value of the time_t offset that
5179 the system function localtime () accepts
5182 This variable is defined but not used by Configure.
5183 The value is the empty string and is not useful.
5186 This variable holds the extension used to identify shared libraries
5187 (also known as shared objects) on the system. Usually set to 'so'.
5189 sockethdr (d_socket.U):
5190 This variable has any cpp '-I' flags needed for socket support.
5192 socketlib (d_socket.U):
5193 This variable has the names of any libraries needed for socket support.
5195 socksizetype (socksizetype.U):
5196 This variable holds the type used for the size argument
5197 for various socket calls like accept. Usual values include
5198 socklen_t, size_t, and int.
5201 This variable is used internally by Configure to determine the
5202 full pathname (if any) of the sort program. After Configure runs,
5203 the value is reset to a plain "sort" and is not useful.
5205 spackage (package.U):
5206 This variable contains the name of the package being constructed,
5207 with the first letter uppercased, i.e. suitable for starting
5210 spitshell (spitshell.U):
5211 This variable contains the command necessary to spit out a runnable
5212 shell on this system. It is either cat or a grep '-v' for # comments.
5214 sPRId64 (quadfio.U):
5215 This variable, if defined, contains the string used by stdio to
5216 format 64-bit decimal numbers (format 'd') for output.
5218 sPRIeldbl (longdblfio.U):
5219 This variable, if defined, contains the string used by stdio to
5220 format long doubles (format 'e') for output.
5222 sPRIEUldbl (longdblfio.U):
5223 This variable, if defined, contains the string used by stdio to
5224 format long doubles (format 'E') for output.
5225 The 'U' in the name is to separate this from sPRIeldbl so that even
5226 case-blind systems can see the difference.
5228 sPRIfldbl (longdblfio.U):
5229 This variable, if defined, contains the string used by stdio to
5230 format long doubles (format 'f') for output.
5232 sPRIFUldbl (longdblfio.U):
5233 This variable, if defined, contains the string used by stdio to
5234 format long doubles (format 'F') for output.
5235 The 'U' in the name is to separate this from sPRIfldbl so that even
5236 case-blind systems can see the difference.
5238 sPRIgldbl (longdblfio.U):
5239 This variable, if defined, contains the string used by stdio to
5240 format long doubles (format 'g') for output.
5242 sPRIGUldbl (longdblfio.U):
5243 This variable, if defined, contains the string used by stdio to
5244 format long doubles (format 'G') for output.
5245 The 'U' in the name is to separate this from sPRIgldbl so that even
5246 case-blind systems can see the difference.
5248 sPRIi64 (quadfio.U):
5249 This variable, if defined, contains the string used by stdio to
5250 format 64-bit decimal numbers (format 'i') for output.
5252 sPRIo64 (quadfio.U):
5253 This variable, if defined, contains the string used by stdio to
5254 format 64-bit octal numbers (format 'o') for output.
5256 sPRIu64 (quadfio.U):
5257 This variable, if defined, contains the string used by stdio to
5258 format 64-bit unsigned decimal numbers (format 'u') for output.
5260 sPRIx64 (quadfio.U):
5261 This variable, if defined, contains the string used by stdio to
5262 format 64-bit hexadecimal numbers (format 'x') for output.
5264 sPRIXU64 (quadfio.U):
5265 This variable, if defined, contains the string used by stdio to
5266 format 64-bit hExADECimAl numbers (format 'X') for output.
5267 The 'U' in the name is to separate this from sPRIx64 so that even
5268 case-blind systems can see the difference.
5270 srand48_r_proto (d_srand48_r.U):
5271 This variable encodes the prototype of srand48_r.
5272 It is zero if d_srand48_r is undef, and one of the
5273 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
5276 srandom_r_proto (d_srandom_r.U):
5277 This variable encodes the prototype of srandom_r.
5278 It is zero if d_srandom_r is undef, and one of the
5279 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
5283 This variable holds the (possibly relative) path of the package source.
5284 It is up to the Makefile to use this variable and set VPATH accordingly
5285 to find the sources remotely. Use $pkgsrc to have an absolute path.
5287 sSCNfldbl (longdblfio.U):
5288 This variable, if defined, contains the string used by stdio to
5289 format long doubles (format 'f') for input.
5291 ssizetype (ssizetype.U):
5292 This variable defines ssizetype to be something like ssize_t,
5293 long or int. It is used by functions that return a count
5294 of bytes or an error condition. It must be a signed type.
5295 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
5297 st_ino_sign (st_ino_def.U):
5298 This variable contains the signedness of struct stat's st_ino.
5299 1 for unsigned, -1 for signed.
5301 st_ino_size (st_ino_def.U):
5302 This variable contains the size of struct stat's st_ino in bytes.
5304 startperl (startperl.U):
5305 This variable contains the string to put on the front of a perl
5306 script to make sure (hopefully) that it runs with perl and not some
5307 shell. Of course, that leading line must be followed by the classical
5309 eval 'exec perl -S $0 ${1+"$@"}'
5310 if $running_under_some_shell;
5311 to guarantee perl startup should the shell execute the script. Note
5312 that this magic incantation is not understood by csh.
5314 startsh (startsh.U):
5315 This variable contains the string to put on the front of a shell
5316 script to make sure (hopefully) that it runs with sh and not some
5319 static_ext (Extensions.U):
5320 This variable holds a list of XS extension files we want to
5321 link statically into the package. It is used by Makefile.
5323 stdchar (stdchar.U):
5324 This variable conditionally defines STDCHAR to be the type of char
5325 used in stdio.h. It has the values "unsigned char" or "char".
5327 stdio_base (d_stdstdio.U):
5328 This variable defines how, given a FILE pointer, fp, to access the
5329 _base field (or equivalent) of stdio.h's FILE structure. This will
5330 be used to define the macro FILE_base(fp).
5332 stdio_bufsiz (d_stdstdio.U):
5333 This variable defines how, given a FILE pointer, fp, to determine
5334 the number of bytes store in the I/O buffer pointer to by the
5335 _base field (or equivalent) of stdio.h's FILE structure. This will
5336 be used to define the macro FILE_bufsiz(fp).
5338 stdio_cnt (d_stdstdio.U):
5339 This variable defines how, given a FILE pointer, fp, to access the
5340 _cnt field (or equivalent) of stdio.h's FILE structure. This will
5341 be used to define the macro FILE_cnt(fp).
5343 stdio_filbuf (d_stdstdio.U):
5344 This variable defines how, given a FILE pointer, fp, to tell
5345 stdio to refill its internal buffers (?). This will
5346 be used to define the macro FILE_filbuf(fp).
5348 stdio_ptr (d_stdstdio.U):
5349 This variable defines how, given a FILE pointer, fp, to access the
5350 _ptr field (or equivalent) of stdio.h's FILE structure. This will
5351 be used to define the macro FILE_ptr(fp).
5353 stdio_stream_array (stdio_streams.U):
5354 This variable tells the name of the array holding the stdio streams.
5355 Usual values include _iob, __iob, and __sF.
5357 strerror_r_proto (d_strerror_r.U):
5358 This variable encodes the prototype of strerror_r.
5359 It is zero if d_strerror_r is undef, and one of the
5360 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
5363 strings (i_string.U):
5364 This variable holds the full path of the string header that will be
5365 used. Typically /usr/include/string.h or /usr/include/strings.h.
5368 This variable is defined but not used by Configure.
5369 The value is the empty string and is not useful.
5371 subversion (patchlevel.U):
5372 The subversion level of this package.
5373 The value of subversion comes from the patchlevel.h file.
5374 In a version number such as 5.6.1, this is the "1".
5375 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
5376 This is unique to perl.
5379 This variable holds the place where the manual is located on this
5380 system. It is not the place where the user wants to put his manual
5381 pages. Rather it is the place where Configure may look to find manual
5382 for unix commands (section 1 of the manual usually). See mansrc.
5384 sysroot (Sysroot.U):
5385 This variable is empty unless supplied by the Configure user.
5386 It can contain a path to an alternative root directory, under which
5387 headers and libraries for the compilation target can be found. This
5388 is generally used when cross-compiling using a gcc-like compiler.
5391 This variable is defined but not used by Configure.
5392 The value is the empty string and is not useful.
5395 This variable is defined but not used by Configure.
5396 The value is the empty string and is not useful.
5398 targetarch (Cross.U):
5399 If cross-compiling, this variable contains the target architecture.
5400 If not, this will be empty.
5402 targetdir (Cross.U):
5403 This variable contains a path that will be created on the target
5404 host using targetmkdir, and then used to copy the cross-compiled
5405 executables to. Defaults to '/tmp' if not set.
5407 targetenv (Cross.U):
5408 If cross-compiling, this variable can be used to modify the
5409 environment on the target system.
5410 However, how and where it's used, and even if it's used at all, is
5411 entirely dependent on both the transport mechanism (targetrun) and
5412 what the target system is. Unless the relevant documentation says
5413 otherwise, it is genereally not useful.
5415 targethost (Cross.U):
5416 This variable contains the name of a separate host machine that
5417 can be used to run compiled test programs and perl tests on.
5418 Set to empty string if not in use.
5420 targetmkdir (Cross.U):
5421 This variable contains the command used by Configure to create a
5422 new directory on the target host.
5424 targetport (Cross.U):
5425 This variable contains the number of a network port to be used to
5426 connect to the host in targethost, if unset defaults to 22 for ssh.
5429 If cross-compiling, this variable contains the location of sh on the
5431 If not, this will be the same as $sh.
5434 This variable is defined but not used by Configure.
5435 The value is the empty string and is not useful.
5438 This variable is defined but not used by Configure.
5439 The value is the empty string and is not useful.
5442 This variable is used internally by Configure to determine the
5443 full pathname (if any) of the test program. After Configure runs,
5444 the value is reset to a plain "test" and is not useful.
5446 timeincl (i_time.U):
5447 This variable holds the full path of the included time header(s).
5449 timetype (d_time.U):
5450 This variable holds the type returned by time(). It can be long,
5451 or time_t on BSD sites (in which case <sys/types.h> should be
5452 included). Anyway, the type Time_t should be used.
5454 tmpnam_r_proto (d_tmpnam_r.U):
5455 This variable encodes the prototype of tmpnam_r.
5456 It is zero if d_tmpnam_r is undef, and one of the
5457 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
5461 This variable contains the command used by Configure
5462 to copy to from the target host. Useful and available
5463 only during Perl build.
5464 The string ':' if not cross-compiling.
5467 This variable is used internally by Configure to determine the
5468 full pathname (if any) of the touch program. After Configure runs,
5469 the value is reset to a plain "touch" and is not useful.
5472 This variable is used internally by Configure to determine the
5473 full pathname (if any) of the tr program. After Configure runs,
5474 the value is reset to a plain "tr" and is not useful.
5477 This variable contains the value to be passed to the tr(1)
5478 command to transliterate a newline. Typical values are
5479 '\012' and '\n'. This is needed for EBCDIC systems where
5480 newline is not necessarily '\012'.
5483 This variable is defined but not used by Configure.
5484 The value is the empty string and is not useful.
5486 ttyname_r_proto (d_ttyname_r.U):
5487 This variable encodes the prototype of ttyname_r.
5488 It is zero if d_ttyname_r is undef, and one of the
5489 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
5493 This variable is the size of an U16 in bytes.
5496 This variable contains the C type used for Perl's U16.
5499 This variable is the size of an U32 in bytes.
5502 This variable contains the C type used for Perl's U32.
5505 This variable is the size of an U64 in bytes.
5508 This variable contains the C type used for Perl's U64.
5511 This variable is the size of an U8 in bytes.
5514 This variable contains the C type used for Perl's U8.
5517 This variable contains the format string used for printing a Uid_t.
5519 uidsign (uidsign.U):
5520 This variable contains the signedness of a uidtype.
5521 1 for unsigned, -1 for signed.
5523 uidsize (uidsize.U):
5524 This variable contains the size of a uidtype in bytes.
5526 uidtype (uidtype.U):
5527 This variable defines Uid_t to be something like uid_t, int,
5528 ushort, or whatever type is used to declare user ids in the kernel.
5531 This variable is used internally by Configure to determine the
5532 full pathname (if any) of the uname program. After Configure runs,
5533 the value is reset to a plain "uname" and is not useful.
5536 This variable is used internally by Configure to determine the
5537 full pathname (if any) of the uniq program. After Configure runs,
5538 the value is reset to a plain "uniq" and is not useful.
5540 uquadtype (quadtype.U):
5541 This variable defines Uquad_t to be something like unsigned long,
5542 unsigned int, unsigned long long, uint64_t, or whatever type is
5543 used for 64-bit integers.
5545 use5005threads (usethreads.U):
5546 This variable conditionally defines the USE_5005THREADS symbol,
5547 and indicates that Perl should be built to use the 5.005-based
5548 threading implementation. Only valid up to 5.8.x.
5550 use64bitall (use64bits.U):
5551 This variable conditionally defines the USE_64_BIT_ALL symbol,
5552 and indicates that 64-bit integer types should be used
5553 when available. The maximal possible
5554 64-bitness is employed: LP64 or ILP64, meaning that you will
5555 be able to use more than 2 gigabytes of memory. This mode is
5556 even more binary incompatible than USE_64_BIT_INT. You may not
5557 be able to run the resulting executable in a 32-bit CPU at all or
5558 you may need at least to reboot your OS to 64-bit mode.
5560 use64bitint (use64bits.U):
5561 This variable conditionally defines the USE_64_BIT_INT symbol,
5562 and indicates that 64-bit integer types should be used
5563 when available. The minimal possible 64-bitness
5564 is employed, just enough to get 64-bit integers into Perl.
5565 This may mean using for example "long longs", while your memory
5566 may still be limited to 2 gigabytes.
5568 usecbacktrace (usebacktrace.U):
5569 This variable indicates whether we are compiling with backtrace
5572 usecrosscompile (Cross.U):
5573 This variable conditionally defines the USE_CROSS_COMPILE symbol,
5574 and indicates that Perl has been cross-compiled.
5577 This variable indicates that Perl was configured with development
5578 features enabled. This should not be done for production builds.
5581 This variable indicates if the system supports dynamic
5582 loading of some sort. See also dlsrc and dlobj.
5584 usedtrace (usedtrace.U):
5585 This variable indicates whether we are compiling with dtrace
5586 support. See also dtrace.
5588 usefaststdio (usefaststdio.U):
5589 This variable conditionally defines the USE_FAST_STDIO symbol,
5590 and indicates that Perl should be built to use 'fast stdio'.
5591 Defaults to define in Perls 5.8 and earlier, to undef later.
5593 useithreads (usethreads.U):
5594 This variable conditionally defines the USE_ITHREADS symbol,
5595 and indicates that Perl should be built to use the interpreter-based
5596 threading implementation.
5598 usekernprocpathname (usekernprocpathname.U):
5599 This variable, indicates that we can use sysctl with
5600 KERN_PROC_PATHNAME to get a full path for the executable, and hence
5601 convert $^X to an absolute path.
5603 uselargefiles (uselfs.U):
5604 This variable conditionally defines the USE_LARGE_FILES symbol,
5605 and indicates that large file interfaces should be used when
5608 uselongdouble (uselongdbl.U):
5609 This variable conditionally defines the USE_LONG_DOUBLE symbol,
5610 and indicates that long doubles should be used when available.
5612 usemallocwrap (mallocsrc.U):
5613 This variable contains y if we are wrapping malloc to prevent
5614 integer overflow during size calculations.
5616 usemorebits (usemorebits.U):
5617 This variable conditionally defines the USE_MORE_BITS symbol,
5618 and indicates that explicit 64-bit interfaces and long doubles
5619 should be used when available.
5621 usemultiplicity (usemultiplicity.U):
5622 This variable conditionally defines the MULTIPLICITY symbol,
5623 and indicates that Perl should be built to use multiplicity.
5625 usemymalloc (mallocsrc.U):
5626 This variable contains y if the malloc that comes with this package
5627 is desired over the system's version of malloc. People often include
5628 special versions of malloc for efficiency, but such versions are often
5629 less portable. See also mallocsrc and mallocobj.
5630 If this is 'y', then -lmalloc is removed from $libs.
5633 This variable contains 'true' or 'false' depending whether the
5634 nm extraction is wanted or not.
5636 usensgetexecutablepath (usensgetexecutablepath.U):
5637 This symbol, if defined, indicates that we can use _NSGetExecutablePath
5638 and realpath to get a full path for the executable, and hence convert
5639 $^X to an absolute path.
5641 useopcode (Extensions.U):
5642 This variable holds either 'true' or 'false' to indicate
5643 whether the Opcode extension should be used. The sole
5644 use for this currently is to allow an easy mechanism
5645 for users to skip the Opcode extension from the Configure
5648 useperlio (useperlio.U):
5649 This variable conditionally defines the USE_PERLIO symbol,
5650 and indicates that the PerlIO abstraction should be
5653 useposix (Extensions.U):
5654 This variable holds either 'true' or 'false' to indicate
5655 whether the POSIX extension should be used. The sole
5656 use for this currently is to allow an easy mechanism
5657 for hints files to indicate that POSIX will not compile
5658 on a particular system.
5660 usequadmath (usequadmath.U):
5661 This variable conditionally defines the USE_QUADMATH symbol,
5662 and indicates that the quadmath library __float128 long doubles
5663 should be used when available.
5665 usereentrant (usethreads.U):
5666 This variable conditionally defines the USE_REENTRANT_API symbol,
5667 which indicates that the thread code may try to use the various
5668 _r versions of library functions. This is only potentially
5669 meaningful if usethreads is set and is very experimental, it is
5670 not even prompted for.
5672 userelocatableinc (bin.U):
5673 This variable is set to true to indicate that perl should relocate
5674 @INC entries at runtime based on the path to the perl binary.
5675 Any @INC paths starting ".../" are relocated relative to the directory
5676 containing the perl binary, and a logical cleanup of the path is then
5677 made around the join point (removing "dir/../" pairs)
5679 useshrplib (libperl.U):
5680 This variable is set to 'true' if the user wishes
5681 to build a shared libperl, and 'false' otherwise.
5683 usesitecustomize (d_sitecustomize.U):
5684 This variable is set to true when the user requires a mechanism that
5685 allows the sysadmin to add entries to @INC at runtime. This variable
5686 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
5688 usesocks (usesocks.U):
5689 This variable conditionally defines the USE_SOCKS symbol,
5690 and indicates that Perl should be built to use SOCKS.
5692 usethreads (usethreads.U):
5693 This variable conditionally defines the USE_THREADS symbol,
5694 and indicates that Perl should be built to use threads.
5696 usevendorprefix (vendorprefix.U):
5697 This variable tells whether the vendorprefix
5698 and consequently other vendor* paths are in use.
5700 useversionedarchname (archname.U):
5701 This variable indicates whether to include the $api_versionstring
5702 as a component of the $archname.
5704 usevfork (d_vfork.U):
5705 This variable is set to true when the user accepts to use vfork.
5706 It is set to false when no vfork is available or when the user
5707 explicitly requests not to use vfork.
5710 This variable holds the path of the include files, which is
5711 usually /usr/include. It is mainly used by other Configure units.
5714 This variable is defined but not used by Configure.
5715 The value is the empty string and is not useful.
5717 uvoformat (perlxvf.U):
5718 This variable contains the format string used for printing
5719 a Perl UV as an unsigned octal integer.
5722 This variable is the size of a UV in bytes.
5725 This variable contains the C type used for Perl's UV.
5727 uvuformat (perlxvf.U):
5728 This variable contains the format string used for printing
5729 a Perl UV as an unsigned decimal integer.
5731 uvxformat (perlxvf.U):
5732 This variable contains the format string used for printing
5733 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
5735 uvXUformat (perlxvf.U):
5736 This variable contains the format string used for printing
5737 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
5739 vaproto (vaproto.U):
5740 This variable conditionally defines CAN_VAPROTO on systems supporting
5741 prototype declaration of functions with a variable number of
5742 arguments. See also prototype.
5744 vendorarch (vendorarch.U):
5745 This variable contains the value of the PERL_VENDORARCH symbol.
5746 It may have a ~ on the front.
5747 The standard distribution will put nothing in this directory.
5748 Vendors who distribute perl may wish to place their own
5749 architecture-dependent modules and extensions in this directory with
5750 MakeMaker Makefile.PL INSTALLDIRS=vendor
5751 or equivalent. See INSTALL for details.
5753 vendorarchexp (vendorarch.U):
5754 This variable is the ~name expanded version of vendorarch, so that you
5755 may use it directly in Makefiles or shell scripts.
5757 vendorbin (vendorbin.U):
5758 This variable contains the eventual value of the VENDORBIN symbol.
5759 It may have a ~ on the front.
5760 The standard distribution will put nothing in this directory.
5761 Vendors who distribute perl may wish to place additional
5762 binaries in this directory with
5763 MakeMaker Makefile.PL INSTALLDIRS=vendor
5764 or equivalent. See INSTALL for details.
5766 vendorbinexp (vendorbin.U):
5767 This variable is the ~name expanded version of vendorbin, so that you
5768 may use it directly in Makefiles or shell scripts.
5770 vendorhtml1dir (vendorhtml1dir.U):
5771 This variable contains the name of the directory for html
5772 pages. It may have a ~ on the front.
5773 The standard distribution will put nothing in this directory.
5774 Vendors who distribute perl may wish to place their own
5775 html pages in this directory with
5776 MakeMaker Makefile.PL INSTALLDIRS=vendor
5777 or equivalent. See INSTALL for details.
5779 vendorhtml1direxp (vendorhtml1dir.U):
5780 This variable is the ~name expanded version of vendorhtml1dir, so that you
5781 may use it directly in Makefiles or shell scripts.
5783 vendorhtml3dir (vendorhtml3dir.U):
5784 This variable contains the name of the directory for html
5785 library pages. It may have a ~ on the front.
5786 The standard distribution will put nothing in this directory.
5787 Vendors who distribute perl may wish to place their own
5788 html pages for modules and extensions in this directory with
5789 MakeMaker Makefile.PL INSTALLDIRS=vendor
5790 or equivalent. See INSTALL for details.
5792 vendorhtml3direxp (vendorhtml3dir.U):
5793 This variable is the ~name expanded version of vendorhtml3dir, so that you
5794 may use it directly in Makefiles or shell scripts.
5796 vendorlib (vendorlib.U):
5797 This variable contains the eventual value of the VENDORLIB symbol,
5798 which is the name of the private library for this package.
5799 The standard distribution will put nothing in this directory.
5800 Vendors who distribute perl may wish to place their own
5801 modules in this directory with
5802 MakeMaker Makefile.PL INSTALLDIRS=vendor
5803 or equivalent. See INSTALL for details.
5805 vendorlib_stem (vendorlib.U):
5806 This variable is $vendorlibexp with any trailing version-specific component
5807 removed. The elements in inc_version_list (inc_version_list.U) can
5808 be tacked onto this variable to generate a list of directories to search.
5810 vendorlibexp (vendorlib.U):
5811 This variable is the ~name expanded version of vendorlib, so that you
5812 may use it directly in Makefiles or shell scripts.
5814 vendorman1dir (vendorman1dir.U):
5815 This variable contains the name of the directory for man1
5816 pages. It may have a ~ on the front.
5817 The standard distribution will put nothing in this directory.
5818 Vendors who distribute perl may wish to place their own
5819 man1 pages in this directory with
5820 MakeMaker Makefile.PL INSTALLDIRS=vendor
5821 or equivalent. See INSTALL for details.
5823 vendorman1direxp (vendorman1dir.U):
5824 This variable is the ~name expanded version of vendorman1dir, so that you
5825 may use it directly in Makefiles or shell scripts.
5827 vendorman3dir (vendorman3dir.U):
5828 This variable contains the name of the directory for man3
5829 pages. It may have a ~ on the front.
5830 The standard distribution will put nothing in this directory.
5831 Vendors who distribute perl may wish to place their own
5832 man3 pages in this directory with
5833 MakeMaker Makefile.PL INSTALLDIRS=vendor
5834 or equivalent. See INSTALL for details.
5836 vendorman3direxp (vendorman3dir.U):
5837 This variable is the ~name expanded version of vendorman3dir, so that you
5838 may use it directly in Makefiles or shell scripts.
5840 vendorprefix (vendorprefix.U):
5841 This variable holds the full absolute path of the directory below
5842 which the vendor will install add-on packages.
5843 See INSTALL for usage and examples.
5845 vendorprefixexp (vendorprefix.U):
5846 This variable holds the full absolute path of the directory below
5847 which the vendor will install add-on packages. Derived from vendorprefix.
5849 vendorscript (vendorscript.U):
5850 This variable contains the eventual value of the VENDORSCRIPT symbol.
5851 It may have a ~ on the front.
5852 The standard distribution will put nothing in this directory.
5853 Vendors who distribute perl may wish to place additional
5854 executable scripts in this directory with
5855 MakeMaker Makefile.PL INSTALLDIRS=vendor
5856 or equivalent. See INSTALL for details.
5858 vendorscriptexp (vendorscript.U):
5859 This variable is the ~name expanded version of vendorscript, so that you
5860 may use it directly in Makefiles or shell scripts.
5862 version (patchlevel.U):
5863 The full version number of this package, such as 5.6.1 (or 5_6_1).
5864 This combines revision, patchlevel, and subversion to get the
5865 full version number, including any possible subversions.
5866 This is suitable for use as a directory name, and hence is
5867 filesystem dependent.
5869 version_patchlevel_string (patchlevel.U):
5870 This is a string combining version, subversion and
5871 perl_patchlevel (if perl_patchlevel is non-zero).
5872 It is typically something like
5873 'version 7 subversion 1' or
5874 'version 7 subversion 1 patchlevel 11224'
5875 It is computed here to avoid duplication of code in myconfig.SH
5878 versiononly (versiononly.U):
5879 If set, this symbol indicates that only the version-specific
5880 components of a perl installation should be installed.
5881 This may be useful for making a test installation of a new
5882 version without disturbing the existing installation.
5883 Setting versiononly is equivalent to setting installperl's -v option.
5884 In particular, the non-versioned scripts and programs such as
5885 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5886 (see INSTALL for a more complete list). Nor are the man
5888 Usually, this is undef.
5891 This variable is defined but not used by Configure.
5892 The value is the empty string and is not useful.
5895 This variable holds extra path (space-separated) used to find
5896 libraries on this platform, for example CPU-specific libraries
5897 (on multi-CPU platforms) may be listed here.
5900 This variable holds the name of the compiler compiler we
5901 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5904 This variable contains any additional yacc flags desired by the
5905 user. It is up to the Makefile to use this.
5908 This variable is defined but not used by Configure.
5909 The value is the empty string and is not useful.
5912 This variable is used internally by Configure to determine the
5913 full pathname (if any) of the zip program. After Configure runs,
5914 the value is reset to a plain "zip" and is not useful.