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 aphostname (d_gethname.U):
45 This variable contains the command which can be used to compute the
46 host name. The command is fully qualified by its absolute path, to make
47 it safe when used by a process with super-user privileges.
49 api_revision (patchlevel.U):
50 The three variables, api_revision, api_version, and
51 api_subversion, specify the version of the oldest perl binary
52 compatible with the present perl. In a full version string
53 such as '5.6.1', api_revision is the '5'.
54 Prior to 5.5.640, the format was a floating point number,
57 perl.c:incpush() and lib/lib.pm will automatically search in
58 $sitelib/.. for older directories back to the limit specified
59 by these api_ variables. This is only useful if you have a
60 perl library directory tree structured like the default one.
61 See INSTALL for how this works. The versioned site_perl
62 directory was introduced in 5.005, so that is the lowest
63 possible value. The version list appropriate for the current
64 system is determined in inc_version_list.U.
66 XXX To do: Since compatibility can depend on compile time
67 options (such as bincompat, longlong, etc.) it should
68 (perhaps) be set by Configure, but currently it isn't.
69 Currently, we read a hard-wired value from patchlevel.h.
70 Perhaps what we ought to do is take the hard-wired value from
71 patchlevel.h but then modify it if the current Configure
72 options warrant. patchlevel.h then would use an #ifdef guard.
74 api_subversion (patchlevel.U):
75 The three variables, api_revision, api_version, and
76 api_subversion, specify the version of the oldest perl binary
77 compatible with the present perl. In a full version string
78 such as '5.6.1', api_subversion is the '1'. See api_revision for
81 api_version (patchlevel.U):
82 The three variables, api_revision, api_version, and
83 api_subversion, specify the version of the oldest perl binary
84 compatible with the present perl. In a full version string
85 such as '5.6.1', api_version is the '6'. See api_revision for
86 full details. As a special case, 5.5.0 is rendered in the
87 old-style as 5.005. (In the 5.005_0x maintenance series,
88 this was the only versioned directory in $sitelib.)
90 api_versionstring (patchlevel.U):
91 This variable combines api_revision, api_version, and
92 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
93 for use as a directory name. This is filesystem dependent.
96 This variable is used internally by Configure to determine the
97 full pathname (if any) of the ar program. After Configure runs,
98 the value is reset to a plain "ar" and is not useful.
101 This variable holds the name of the directory in which the user wants
102 to put architecture-dependent public library files for $package.
103 It is most often a local directory such as /usr/local/lib.
104 Programs using this variable must be prepared to deal
105 with filename expansion.
107 archlibexp (archlib.U):
108 This variable is the same as the archlib variable, but is
109 filename expanded at configuration time, for convenient use.
111 archname (archname.U):
112 This variable is a short name to characterize the current
113 architecture. It is used mainly to construct the default archlib.
115 archname64 (use64bits.U):
116 This variable is used for the 64-bitness part of $archname.
119 This variable defines any additional objects that must be linked
120 in with the program on this architecture. On unix, it is usually
121 empty. It is typically used to include emulations of unix calls
122 or other facilities. For perl on OS/2, for example, this would
125 asctime_r_proto (d_asctime_r.U):
126 This variable encodes the prototype of asctime_r.
127 It is zero if d_asctime_r is undef, and one of the
128 REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
132 This variable is used internally by Configure to determine the
133 full pathname (if any) of the awk program. After Configure runs,
134 the value is reset to a plain "awk" and is not useful.
137 The base revision level of this package, from the .package file.
140 This variable is defined but not used by Configure.
141 The value is the empty string and is not useful.
144 This variable holds the name of the directory in which the user wants
145 to put publicly executable images for the package in question. It
146 is most often a local directory such as /usr/local/bin. Programs using
147 this variable must be prepared to deal with ~name substitution.
150 This variable saves the result from configure if generated binaries
151 are in ELF format. Only set to defined when the test has actually
152 been performed, and the result was positive.
155 This is the same as the bin variable, but is filename expanded at
156 configuration time, for use in your makefiles.
159 This variable is used internally by Configure to determine the
160 full pathname (if any) of the bison program. After Configure runs,
161 the value is reset to a plain "bison" and is not useful.
164 This variable is used internally by Configure to determine the
165 full pathname (if any) of the byacc program. After Configure runs,
166 the value is reset to a plain "byacc" and is not useful.
168 byteorder (byteorder.U):
169 This variable holds the byte order in a UV. In the following,
170 larger digits indicate more significance. The variable byteorder
171 is either 4321 on a big-endian machine, or 1234 on a little-endian,
172 or 87654321 on a Cray ... or 3412 with weird order !
175 This variable contains the \c string if that is what causes the echo
176 command to suppress newline. Otherwise it is null. Correct usage is
177 $echo $n "prompt for a question: $c".
179 castflags (d_castneg.U):
180 This variable contains a flag that precise difficulties the
181 compiler has casting odd floating values to unsigned long:
183 1 = couldn't cast < 0
184 2 = couldn't cast >= 0x80000000
185 4 = couldn't cast in argument expression list
188 This variable is used internally by Configure to determine the
189 full pathname (if any) of the cat program. After Configure runs,
190 the value is reset to a plain "cat" and is not useful.
193 This variable holds the name of a command to execute a C compiler which
194 can resolve multiple global references that happen to have the same
195 name. Usual values are 'cc' and 'gcc'.
196 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
198 cccdlflags (dlsrc.U):
199 This variable contains any special flags that might need to be
200 passed with 'cc -c' to compile modules to be used to create a shared
201 library that will be used for dynamic loading. For hpux, this
202 should be +z. It is up to the makefile to use it.
205 This variable contains any special flags that might need to be
206 passed to cc to link with a shared library for dynamic loading.
207 It is up to the makefile to use it. For sunos 4.1, it should
211 This variable contains any additional C compiler flags desired by
212 the user. It is up to the Makefile to use this.
214 ccflags_uselargefiles (uselfs.U):
215 This variable contains the compiler flags needed by large file builds
216 and added to ccflags by hints files.
219 This can set either by hints files or by Configure. If using
220 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
221 Some platforms, however, make good use of this by storing the
222 flavor of the C compiler being used here. For example if using
223 the Sun WorkShop suite, ccname will be 'workshop'.
225 ccsymbols (Cppsym.U):
226 The variable contains the symbols defined by the C compiler alone.
227 The symbols defined by cpp or by cc when it calls cpp are not in
228 this list, see cppsymbols and cppccsymbols.
229 The list is a space-separated list of symbol=value tokens.
231 ccversion (Checkcc.U):
232 This can set either by hints files or by Configure. If using
233 a (non-gcc) vendor cc, this variable may contain a version for
237 Login name of the person who ran the Configure script and answered the
238 questions. This is used to tag both config.sh and config_h.SH.
240 cf_email (cf_email.U):
241 Electronic mail address of the person who ran Configure. This can be
242 used by units that require the user's e-mail, like MailList.U.
245 Holds the output of the "date" command when the configuration file was
246 produced. This is used to tag both config.sh and config_h.SH.
248 charbits (charsize.U):
249 This variable contains the value of the CHARBITS symbol, which
250 indicates to the C program how many bits there are in a character.
252 charsize (charsize.U):
253 This variable contains the value of the CHARSIZE symbol, which
254 indicates to the C program how many bytes there are in a character.
257 This variable is defined but not used by Configure.
258 The value is the empty string and is not useful.
261 This variable is used internally by Configure to determine the
262 full pathname (if any) of the chmod program. After Configure runs,
263 the value is reset to a plain "chmod" and is not useful.
266 This variable is defined but not used by Configure.
267 The value is the empty string and is not useful.
269 clocktype (d_times.U):
270 This variable holds the type returned by times(). It can be long,
271 or clock_t on BSD sites (in which case <sys/types.h> should be
275 This variable is used internally by Configure to determine the
276 full pathname (if any) of the comm program. After Configure runs,
277 the value is reset to a plain "comm" and is not useful.
280 This variable is defined but not used by Configure.
281 The value is the empty string and is not useful.
283 config_arg0 (Options.U):
284 This variable contains the string used to invoke the Configure
285 command, as reported by the shell in the $0 variable.
287 config_argc (Options.U):
288 This variable contains the number of command-line arguments
289 passed to Configure, as reported by the shell in the $# variable.
290 The individual arguments are stored as variables config_arg1,
293 config_args (Options.U):
294 This variable contains a single string giving the command-line
295 arguments passed to Configure. Spaces within arguments,
296 quotes, and escaped characters are not correctly preserved.
297 To reconstruct the command line, you must assemble the individual
298 command line pieces, given in config_arg[0-9]*.
300 contains (contains.U):
301 This variable holds the command to do a grep with a proper return
302 status. On most sane systems it is simply "grep". On insane systems
303 it is a grep followed by a cat followed by a test. This variable
304 is primarily for the use of other Configure units.
307 This variable is used internally by Configure to determine the
308 full pathname (if any) of the cp program. After Configure runs,
309 the value is reset to a plain "cp" and is not useful.
312 This variable is defined but not used by Configure.
313 The value is the empty string and is not useful.
316 This variable is used internally by Configure to determine the
317 full pathname (if any) of the cpp program. After Configure runs,
318 the value is reset to a plain "cpp" and is not useful.
320 cpp_stuff (cpp_stuff.U):
321 This variable contains an identification of the concatenation mechanism
322 used by the C preprocessor.
324 cppccsymbols (Cppsym.U):
325 The variable contains the symbols defined by the C compiler
326 when it calls cpp. The symbols defined by the cc alone or cpp
327 alone are not in this list, see ccsymbols and cppsymbols.
328 The list is a space-separated list of symbol=value tokens.
330 cppflags (ccflags.U):
331 This variable holds the flags that will be passed to the C pre-
332 processor. It is up to the Makefile to use it.
334 cpplast (cppstdin.U):
335 This variable has the same functionality as cppminus, only it applies
336 to cpprun and not cppstdin.
338 cppminus (cppstdin.U):
339 This variable contains the second part of the string which will invoke
340 the C preprocessor on the standard input and produce to standard
341 output. This variable will have the value "-" if cppstdin needs
342 a minus to specify standard input, otherwise the value is "".
345 This variable contains the command which will invoke a C preprocessor
346 on standard input and put the output to stdout. It is guaranteed not
347 to be a wrapper and may be a null string if no preprocessor can be
348 made directly available. This preprocessor might be different from the
349 one used by the C compiler. Don't forget to append cpplast after the
350 preprocessor options.
352 cppstdin (cppstdin.U):
353 This variable contains the command which will invoke the C
354 preprocessor on standard input and put the output to stdout.
355 It is primarily used by other Configure units that ask about
356 preprocessor symbols.
358 cppsymbols (Cppsym.U):
359 The variable contains the symbols defined by the C preprocessor
360 alone. The symbols defined by cc or by cc when it calls cpp are
361 not in this list, see ccsymbols and cppccsymbols.
362 The list is a space-separated list of symbol=value tokens.
364 crypt_r_proto (d_crypt_r.U):
365 This variable encodes the prototype of crypt_r.
366 It is zero if d_crypt_r is undef, and one of the
367 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
370 cryptlib (d_crypt.U):
371 This variable holds -lcrypt or the path to a libcrypt.a archive if
372 the crypt() function is not defined in the standard C library. It is
373 up to the Makefile to use this.
376 This variable is used internally by Configure to determine the
377 full pathname (if any) of the csh program. After Configure runs,
378 the value is reset to a plain "csh" and is not useful.
380 ctermid_r_proto (d_ctermid_r.U):
381 This variable encodes the prototype of ctermid_r.
382 It is zero if d_ctermid_r is undef, and one of the
383 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
386 ctime_r_proto (d_ctime_r.U):
387 This variable encodes the prototype of ctime_r.
388 It is zero if d_ctime_r is undef, and one of the
389 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
392 d__fwalk (d__fwalk.U):
393 This variable conditionally defines HAS__FWALK if _fwalk() is
394 available to apply a function to all the file handles.
396 d_accept4 (d_accept4.U):
397 This variable conditionally defines HAS_ACCEPT4 if accept4() is
398 available to accept socket connections.
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 symbol conditionally defines the symbol BSD when running on a
502 d_bsdgetpgrp (d_getpgrp.U):
503 This variable conditionally defines USE_BSD_GETPGRP if
504 getpgrp needs one arguments whereas USG one needs none.
506 d_bsdsetpgrp (d_setpgrp.U):
507 This variable conditionally defines USE_BSD_SETPGRP if
508 setpgrp needs two arguments whereas USG one needs none.
509 See also d_setpgid for a POSIX interface.
511 d_builtin_add_overflow (d_builtin_overflow.U):
512 This variable conditionally defines HAS_BUILTIN_ADD_OVERFLOW, which
513 indicates that the compiler supports __builtin_add_overflow(x,y,&z)
514 for safely adding x and y into z while checking for overflow.
516 d_builtin_choose_expr (d_builtin.U):
517 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
518 indicates that the compiler supports __builtin_choose_expr(x,y,z).
519 This built-in function is analogous to the "x?y:z" operator in C,
520 except that the expression returned has its type unaltered by
521 promotion rules. Also, the built-in function does not evaluate
522 the expression that was not chosen.
524 d_builtin_expect (d_builtin.U):
525 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
526 that the compiler supports __builtin_expect(exp,c). You may use
527 __builtin_expect to provide the compiler with branch prediction
530 d_builtin_mul_overflow (d_builtin_overflow.U):
531 This variable conditionally defines HAS_BUILTIN_MUL_OVERFLOW, which
532 indicates that the compiler supports __builtin_mul_overflow(x,y,&z)
533 for safely multiplying x and y into z while checking for overflow.
535 d_builtin_sub_overflow (d_builtin_overflow.U):
536 This variable conditionally defines HAS_BUILTIN_SUB_OVERFLOW, which
537 indicates that the compiler supports __builtin_sub_overflow(x,y,&z)
538 for safely subtracting y from x into z while checking for overflow.
540 d_c99_variadic_macros (d_c99_variadic.U):
541 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
542 symbol, which indicates to the C program that C99 variadic macros
545 d_casti32 (d_casti32.U):
546 This variable conditionally defines CASTI32, which indicates
547 whether the C compiler can cast large floats to 32-bit ints.
549 d_castneg (d_castneg.U):
550 This variable conditionally defines CASTNEG, which indicates
551 whether the C compiler can cast negative float to unsigned.
554 This variable conditionally defines the HAS_CBRT symbol, which
555 indicates to the C program that the cbrt() (cube root) function
559 This variable conditionally defines the HAS_CHOWN symbol, which
560 indicates to the C program that the chown() routine is available.
562 d_chroot (d_chroot.U):
563 This variable conditionally defines the HAS_CHROOT symbol, which
564 indicates to the C program that the chroot() routine is available.
566 d_chsize (d_chsize.U):
567 This variable conditionally defines the CHSIZE symbol, which
568 indicates to the C program that the chsize() routine is available
569 to truncate files. You might need a -lx to get this routine.
572 This variable conditionally defines the HAS_CLASS symbol, which
573 indicates to the C program that the class() routine is available.
575 d_clearenv (d_clearenv.U):
576 This variable conditionally defines the HAS_CLEARENV symbol, which
577 indicates to the C program that the clearenv () routine is available.
579 d_closedir (d_closedir.U):
580 This variable conditionally defines HAS_CLOSEDIR if closedir() is
583 d_cmsghdr_s (d_cmsghdr_s.U):
584 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
585 which indicates that the struct cmsghdr is supported.
587 d_copysign (d_copysign.U):
588 This variable conditionally defines the HAS_COPYSIGN symbol, which
589 indicates to the C program that the copysign() routine is available.
591 d_copysignl (d_copysignl.U):
592 This variable conditionally defines the HAS_COPYSIGNL symbol, which
593 indicates to the C program that the copysignl() routine is available.
594 If aintl is also present we can emulate modfl.
596 d_cplusplus (d_cplusplus.U):
597 This variable conditionally defines the USE_CPLUSPLUS symbol, which
598 indicates that a C++ compiler was used to compiled Perl and will be
599 used to compile extensions.
602 This variable conditionally defines the CRYPT symbol, which
603 indicates to the C program that the crypt() routine is available
604 to encrypt passwords and the like.
606 d_crypt_r (d_crypt_r.U):
607 This variable conditionally defines the HAS_CRYPT_R symbol,
608 which indicates to the C program that the crypt_r()
609 routine is available.
612 This variable conditionally defines the CSH symbol, which
613 indicates to the C program that the C-shell exists.
615 d_ctermid (d_ctermid.U):
616 This variable conditionally defines CTERMID if ctermid() is
617 available to generate filename for terminal.
619 d_ctermid_r (d_ctermid_r.U):
620 This variable conditionally defines the HAS_CTERMID_R symbol,
621 which indicates to the C program that the ctermid_r()
622 routine is available.
624 d_ctime64 (d_timefuncs64.U):
625 This variable conditionally defines the HAS_CTIME64 symbol, which
626 indicates to the C program that the ctime64 () routine is available.
628 d_ctime_r (d_ctime_r.U):
629 This variable conditionally defines the HAS_CTIME_R symbol,
630 which indicates to the C program that the ctime_r()
631 routine is available.
633 d_cuserid (d_cuserid.U):
634 This variable conditionally defines the HAS_CUSERID symbol, which
635 indicates to the C program that the cuserid() routine is available
636 to get character login names.
638 d_dbminitproto (d_dbminitproto.U):
639 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
640 which indicates to the C program that the system provides
641 a prototype for the dbminit() function. Otherwise, it is
642 up to the program to supply one.
644 d_difftime (d_difftime.U):
645 This variable conditionally defines the HAS_DIFFTIME symbol, which
646 indicates to the C program that the difftime() routine is available.
648 d_difftime64 (d_timefuncs64.U):
649 This variable conditionally defines the HAS_DIFFTIME64 symbol, which
650 indicates to the C program that the difftime64 () routine is available.
652 d_dir_dd_fd (d_dir_dd_fd.U):
653 This variable conditionally defines the HAS_DIR_DD_FD symbol, which
654 indicates that the DIR directory stream type contains a member
655 variable called dd_fd.
658 This variable conditionally defines the HAS_DIRFD constant,
659 which indicates to the C program that dirfd() is available
660 to return the file descriptor of a directory stream.
662 d_dirnamlen (i_dirent.U):
663 This variable conditionally defines DIRNAMLEN, which indicates
664 to the C program that the length of directory entry names is
665 provided by a d_namelen field.
667 d_dladdr (d_dladdr.U):
668 This variable conditionally defines the HAS_DLADDR symbol, which
669 indicates to the C program that the dladdr() routine is available
670 to get a stack trace.
672 d_dlerror (d_dlerror.U):
673 This variable conditionally defines the HAS_DLERROR symbol, which
674 indicates to the C program that the dlerror() routine is available.
676 d_dlopen (d_dlopen.U):
677 This variable conditionally defines the HAS_DLOPEN symbol, which
678 indicates to the C program that the dlopen() routine is available.
680 d_dlsymun (d_dlsymun.U):
681 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
682 indicates that we need to prepend an underscore to the symbol
683 name before calling dlsym().
685 d_dosuid (d_dosuid.U):
686 This variable conditionally defines the symbol DOSUID, which
687 tells the C program that it should insert setuid emulation code
688 on hosts which have setuid #! scripts disabled.
690 d_double_has_inf (longdblfio.U):
691 This variable conditionally defines the symbol DOUBLE_HAS_INF
692 which indicates that the double type has an infinity.
694 d_double_has_nan (longdblfio.U):
695 This variable conditionally defines the symbol DOUBLE_HAS_NAN
696 which indicates that the double type has a not-a-number.
698 d_double_has_negative_zero (longdblfio.U):
699 This variable conditionally defines the symbol DOUBLE_HAS_NEGATIVE_ZERO
700 which indicates that the double type has a negative zero.
702 d_double_has_subnormals (longdblfio.U):
703 This variable conditionally defines the symbol DOUBLE_HAS_SUBNORMALS
704 which indicates that the double type has subnormals (denormals).
706 d_double_style_cray (longdblfio.U):
707 This variable conditionally defines the symbol DOUBLE_STYLE_CRAY
708 which indicates that the double is the 64-bit CRAY mainframe format.
710 d_double_style_ibm (longdblfio.U):
711 This variable conditionally defines the symbol DOUBLE_STYLE_IBM,
712 which indicates that the double is the 64-bit IBM mainframe format.
714 d_double_style_ieee (longdblfio.U):
715 This variable conditionally defines the symbol DOUBLE_STYLE_IEEE,
716 which indicates that the double is the 64-bit IEEE 754.
718 d_double_style_vax (longdblfio.U):
719 This variable conditionally defines the symbol DOUBLE_STYLE_VAX,
720 which indicates that the double is the 64-bit VAX format D or G.
722 d_drand48_r (d_drand48_r.U):
723 This variable conditionally defines the HAS_DRAND48_R symbol,
724 which indicates to the C program that the drand48_r()
725 routine is available.
727 d_drand48proto (d_drand48proto.U):
728 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
729 which indicates to the C program that the system provides
730 a prototype for the drand48() function. Otherwise, it is
731 up to the program to supply one.
734 This variable conditionally defines HAS_DUP2 if dup2() is
735 available to duplicate file descriptors.
738 This variable conditionally defines HAS_DUP3 if dup3() is
739 available to duplicate file descriptors.
741 d_duplocale (d_newlocale.U):
742 This variable conditionally defines the HAS_DUPLOCALE symbol, which
743 indicates to the C program that the duplocale() routine is available
744 to duplicate a locale object.
746 d_eaccess (d_eaccess.U):
747 This variable conditionally defines the HAS_EACCESS symbol, which
748 indicates to the C program that the eaccess() routine is available.
750 d_endgrent (d_endgrent.U):
751 This variable conditionally defines the HAS_ENDGRENT symbol, which
752 indicates to the C program that the endgrent() routine is available
753 for sequential access of the group database.
755 d_endgrent_r (d_endgrent_r.U):
756 This variable conditionally defines the HAS_ENDGRENT_R symbol,
757 which indicates to the C program that the endgrent_r()
758 routine is available.
760 d_endhent (d_endhent.U):
761 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
762 available to close whatever was being used for host queries.
764 d_endhostent_r (d_endhostent_r.U):
765 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
766 which indicates to the C program that the endhostent_r()
767 routine is available.
769 d_endnent (d_endnent.U):
770 This variable conditionally defines HAS_ENDNETENT if endnetent() is
771 available to close whatever was being used for network queries.
773 d_endnetent_r (d_endnetent_r.U):
774 This variable conditionally defines the HAS_ENDNETENT_R symbol,
775 which indicates to the C program that the endnetent_r()
776 routine is available.
778 d_endpent (d_endpent.U):
779 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
780 available to close whatever was being used for protocol queries.
782 d_endprotoent_r (d_endprotoent_r.U):
783 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
784 which indicates to the C program that the endprotoent_r()
785 routine is available.
787 d_endpwent (d_endpwent.U):
788 This variable conditionally defines the HAS_ENDPWENT symbol, which
789 indicates to the C program that the endpwent() routine is available
790 for sequential access of the passwd database.
792 d_endpwent_r (d_endpwent_r.U):
793 This variable conditionally defines the HAS_ENDPWENT_R symbol,
794 which indicates to the C program that the endpwent_r()
795 routine is available.
797 d_endsent (d_endsent.U):
798 This variable conditionally defines HAS_ENDSERVENT if endservent() is
799 available to close whatever was being used for service queries.
801 d_endservent_r (d_endservent_r.U):
802 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
803 which indicates to the C program that the endservent_r()
804 routine is available.
806 d_eofnblk (nblock_io.U):
807 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
808 when reading from a non-blocking I/O source.
811 This variable conditionally defines the HAS_ERF symbol, which
812 indicates to the C program that the erf() routine is available.
815 This variable conditionally defines the HAS_ERFC symbol, which
816 indicates to the C program that the erfc() routine is available.
819 This variable conditionally defines the symbols EUNICE and VAX, which
820 alerts the C program that it must deal with idiosyncrasies of VMS.
823 This variable conditionally defines the HAS_EXP2 symbol, which
824 indicates to the C program that the exp2() routine is available.
827 This variable conditionally defines the HAS_EXPM1 symbol, which
828 indicates to the C program that the expm1() routine is available.
830 d_faststdio (d_faststdio.U):
831 This variable conditionally defines the HAS_FAST_STDIO symbol,
832 which indicates to the C program that the "fast stdio" is available
833 to manipulate the stdio buffers directly.
835 d_fchdir (d_fchdir.U):
836 This variable conditionally defines the HAS_FCHDIR symbol, which
837 indicates to the C program that the fchdir() routine is available.
839 d_fchmod (d_fchmod.U):
840 This variable conditionally defines the HAS_FCHMOD symbol, which
841 indicates to the C program that the fchmod() routine is available
842 to change mode of opened files.
844 d_fchmodat (d_fsat.U):
845 This variable conditionally defines the HAS_FCHMODAT symbol, which
846 indicates the POSIX fchmodat() function is available.
848 d_fchown (d_fchown.U):
849 This variable conditionally defines the HAS_FCHOWN symbol, which
850 indicates to the C program that the fchown() routine is available
851 to change ownership of opened files.
854 This variable conditionally defines the HAS_FCNTL symbol, and indicates
855 whether the fcntl() function exists
857 d_fcntl_can_lock (d_fcntl_can_lock.U):
858 This variable conditionally defines the FCNTL_CAN_LOCK symbol
859 and indicates whether file locking with fcntl() works.
861 d_fd_macros (d_fd_set.U):
862 This variable contains the eventual value of the HAS_FD_MACROS symbol,
863 which indicates if your C compiler knows about the macros which
864 manipulate an fd_set.
866 d_fd_set (d_fd_set.U):
867 This variable contains the eventual value of the HAS_FD_SET symbol,
868 which indicates if your C compiler knows about the fd_set typedef.
870 d_fdclose (d_fdclose.U):
871 This variable conditionally defines the HAS_FDCLOSE symbol, which
872 indicates to the C program that the fdclose() routine is available.
875 This variable conditionally defines the HAS_FDIM symbol, which
876 indicates to the C program that the fdim() routine is available.
878 d_fds_bits (d_fd_set.U):
879 This variable contains the eventual value of the HAS_FDS_BITS symbol,
880 which indicates if your fd_set typedef contains the fds_bits member.
881 If you have an fd_set typedef, but the dweebs who installed it did
882 a half-fast job and neglected to provide the macros to manipulate
883 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
885 d_fegetround (d_fegetround.U):
886 This variable conditionally defines HAS_FEGETROUND if fegetround() is
887 available to get the floating point rounding mode.
889 d_fgetpos (d_fgetpos.U):
890 This variable conditionally defines HAS_FGETPOS if fgetpos() is
891 available to get the file position indicator.
893 d_finite (d_finite.U):
894 This variable conditionally defines the HAS_FINITE symbol, which
895 indicates to the C program that the finite() routine is available.
897 d_finitel (d_finitel.U):
898 This variable conditionally defines the HAS_FINITEL symbol, which
899 indicates to the C program that the finitel() routine is available.
901 d_flexfnam (d_flexfnam.U):
902 This variable conditionally defines the FLEXFILENAMES symbol, which
903 indicates that the system supports filenames longer than 14 characters.
906 This variable conditionally defines HAS_FLOCK if flock() is
907 available to do file locking.
909 d_flockproto (d_flockproto.U):
910 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
911 which indicates to the C program that the system provides
912 a prototype for the flock() function. Otherwise, it is
913 up to the program to supply one.
916 This variable conditionally defines the HAS_FMA symbol, which
917 indicates to the C program that the fma() routine is available.
920 This variable conditionally defines the HAS_FMAX symbol, which
921 indicates to the C program that the fmax() routine is available.
924 This variable conditionally defines the HAS_FMIN symbol, which
925 indicates to the C program that the fmin() routine is available.
928 This variable conditionally defines the HAS_FORK symbol, which
929 indicates to the C program that the fork() routine is available.
931 d_fp_class (d_fp_class.U):
932 This variable conditionally defines the HAS_FP_CLASS symbol, which
933 indicates to the C program that the fp_class() routine is available.
935 d_fp_classify (d_fpclassify.U):
936 This variable conditionally defines the HAS_FP_CLASSIFY symbol, which
937 indicates to the C program that the fp_classify() routine is available.
939 d_fp_classl (d_fp_classl.U):
940 This variable conditionally defines the HAS_FP_CLASSL symbol, which
941 indicates to the C program that the fp_classl() routine is available.
943 d_fpathconf (d_pathconf.U):
944 This variable conditionally defines the HAS_FPATHCONF symbol, which
945 indicates to the C program that the pathconf() routine is available
946 to determine file-system related limits and options associated
947 with a given open file descriptor.
949 d_fpclass (d_fpclass.U):
950 This variable conditionally defines the HAS_FPCLASS symbol, which
951 indicates to the C program that the fpclass() routine is available.
953 d_fpclassify (d_fpclassify.U):
954 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
955 indicates to the C program that the fpclassify() routine is available.
957 d_fpclassl (d_fpclassl.U):
958 This variable conditionally defines the HAS_FPCLASSL symbol, which
959 indicates to the C program that the fpclassl() routine is available.
961 d_fpgetround (d_fpgetround.U):
962 This variable conditionally defines HAS_FPGETROUND if fpgetround()
963 is available to get the floating point rounding mode.
965 d_fpos64_t (d_fpos64_t.U):
966 This symbol will be defined if the C compiler supports fpos64_t.
968 d_freelocale (d_newlocale.U):
969 This variable conditionally defines the HAS_FREELOCALE symbol, which
970 indicates to the C program that the freelocale() routine is available
971 to deallocates the resources associated with a locale object.
973 d_frexpl (d_frexpl.U):
974 This variable conditionally defines the HAS_FREXPL symbol, which
975 indicates to the C program that the frexpl() routine is available.
977 d_fs_data_s (d_fs_data_s.U):
978 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
979 which indicates that the struct fs_data is supported.
981 d_fseeko (d_fseeko.U):
982 This variable conditionally defines the HAS_FSEEKO symbol, which
983 indicates to the C program that the fseeko() routine is available.
985 d_fsetpos (d_fsetpos.U):
986 This variable conditionally defines HAS_FSETPOS if fsetpos() is
987 available to set the file position indicator.
989 d_fstatfs (d_fstatfs.U):
990 This variable conditionally defines the HAS_FSTATFS symbol, which
991 indicates to the C program that the fstatfs() routine is available.
993 d_fstatvfs (d_statvfs.U):
994 This variable conditionally defines the HAS_FSTATVFS symbol, which
995 indicates to the C program that the fstatvfs() routine is available.
998 This variable conditionally defines the HAS_FSYNC symbol, which
999 indicates to the C program that the fsync() routine is available.
1001 d_ftello (d_ftello.U):
1002 This variable conditionally defines the HAS_FTELLO symbol, which
1003 indicates to the C program that the ftello() routine is available.
1005 d_ftime (d_ftime.U):
1006 This variable conditionally defines the HAS_FTIME symbol, which indicates
1007 that the ftime() routine exists. The ftime() routine is basically
1008 a sub-second accuracy clock.
1010 d_futimes (d_futimes.U):
1011 This variable conditionally defines the HAS_FUTIMES symbol, which
1012 indicates to the C program that the futimes() routine is available.
1014 d_gai_strerror (d_gai_strerror.U):
1015 This variable conditionally defines the HAS_GAI_STRERROR symbol
1016 if the gai_strerror() routine is available and can be used to
1017 translate error codes returned by getaddrinfo() into human
1020 d_Gconvert (d_gconvert.U):
1021 This variable holds what Gconvert is defined as to convert
1022 floating point numbers into strings. By default, Configure
1023 sets this macro to use the first of gconvert, gcvt, or sprintf
1024 that pass sprintf-%g-like behavior tests. If perl is using
1025 long doubles, the macro uses the first of the following
1026 functions that pass Configure's tests: qgcvt, sprintf (if
1027 Configure knows how to make sprintf format long doubles--see
1028 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
1029 The gconvert_preference and gconvert_ld_preference variables
1030 can be used to alter Configure's preferences, for doubles and
1031 long doubles, respectively. If present, they contain a
1032 space-separated list of one or more of the above function
1033 names in the order they should be tried.
1035 d_Gconvert may be set to override Configure with a platform-
1036 specific function. If this function expects a double, a
1037 different value may need to be set by the uselongdouble.cbu
1038 call-back unit so that long doubles can be formatted without
1041 d_gdbm_ndbm_h_uses_prototypes (i_ndbm.U):
1042 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1043 which indicates that the gdbm-ndbm.h include file uses real ANSI C
1044 prototypes instead of K&R style function declarations. K&R style
1045 declarations are unsupported in C++, so the include file requires
1046 special handling when using a C++ compiler and this variable is
1047 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1048 to get the same information for alternative ndbm.h include files.
1050 d_gdbmndbm_h_uses_prototypes (i_ndbm.U):
1051 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1052 which indicates that the gdbm/ndbm.h include file uses real ANSI C
1053 prototypes instead of K&R style function declarations. K&R style
1054 declarations are unsupported in C++, so the include file requires
1055 special handling when using a C++ compiler and this variable is
1056 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1057 to get the same information for alternative ndbm.h include files.
1059 d_getaddrinfo (d_getaddrinfo.U):
1060 This variable conditionally defines the HAS_GETADDRINFO symbol,
1061 which indicates to the C program that the getaddrinfo() function
1064 d_getcwd (d_getcwd.U):
1065 This variable conditionally defines the HAS_GETCWD symbol, which
1066 indicates to the C program that the getcwd() routine is available
1067 to get the current working directory.
1069 d_getespwnam (d_getespwnam.U):
1070 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
1071 available to retrieve enhanced (shadow) password entries by name.
1073 d_getfsstat (d_getfsstat.U):
1074 This variable conditionally defines the HAS_GETFSSTAT symbol, which
1075 indicates to the C program that the getfsstat() routine is available.
1077 d_getgrent (d_getgrent.U):
1078 This variable conditionally defines the HAS_GETGRENT symbol, which
1079 indicates to the C program that the getgrent() routine is available
1080 for sequential access of the group database.
1082 d_getgrent_r (d_getgrent_r.U):
1083 This variable conditionally defines the HAS_GETGRENT_R symbol,
1084 which indicates to the C program that the getgrent_r()
1085 routine is available.
1087 d_getgrgid_r (d_getgrgid_r.U):
1088 This variable conditionally defines the HAS_GETGRGID_R symbol,
1089 which indicates to the C program that the getgrgid_r()
1090 routine is available.
1092 d_getgrnam_r (d_getgrnam_r.U):
1093 This variable conditionally defines the HAS_GETGRNAM_R symbol,
1094 which indicates to the C program that the getgrnam_r()
1095 routine is available.
1097 d_getgrps (d_getgrps.U):
1098 This variable conditionally defines the HAS_GETGROUPS symbol, which
1099 indicates to the C program that the getgroups() routine is available
1100 to get the list of process groups.
1102 d_gethbyaddr (d_gethbyad.U):
1103 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
1104 indicates to the C program that the gethostbyaddr() routine is available
1105 to look up hosts by their IP addresses.
1107 d_gethbyname (d_gethbynm.U):
1108 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
1109 indicates to the C program that the gethostbyname() routine is available
1110 to look up host names in some data base or other.
1112 d_gethent (d_gethent.U):
1113 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
1114 available to look up host names in some data base or another.
1116 d_gethname (d_gethname.U):
1117 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
1118 indicates to the C program that the gethostname() routine may be
1119 used to derive the host name.
1121 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
1122 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
1123 which indicates to the C program that the gethostbyaddr_r()
1124 routine is available.
1126 d_gethostbyname_r (d_gethostbyname_r.U):
1127 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
1128 which indicates to the C program that the gethostbyname_r()
1129 routine is available.
1131 d_gethostent_r (d_gethostent_r.U):
1132 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
1133 which indicates to the C program that the gethostent_r()
1134 routine is available.
1136 d_gethostprotos (d_gethostprotos.U):
1137 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
1138 which indicates to the C program that <netdb.h> supplies
1139 prototypes for the various gethost*() functions.
1140 See also netdbtype.U for probing for various netdb types.
1142 d_getitimer (d_getitimer.U):
1143 This variable conditionally defines the HAS_GETITIMER symbol, which
1144 indicates to the C program that the getitimer() routine is available.
1146 d_getlogin (d_getlogin.U):
1147 This variable conditionally defines the HAS_GETLOGIN symbol, which
1148 indicates to the C program that the getlogin() routine is available
1149 to get the login name.
1151 d_getlogin_r (d_getlogin_r.U):
1152 This variable conditionally defines the HAS_GETLOGIN_R symbol,
1153 which indicates to the C program that the getlogin_r()
1154 routine is available.
1156 d_getmnt (d_getmnt.U):
1157 This variable conditionally defines the HAS_GETMNT symbol, which
1158 indicates to the C program that the getmnt() routine is available
1159 to retrieve one or more mount info blocks by filename.
1161 d_getmntent (d_getmntent.U):
1162 This variable conditionally defines the HAS_GETMNTENT symbol, which
1163 indicates to the C program that the getmntent() routine is available
1164 to iterate through mounted files to get their mount info.
1166 d_getnameinfo (d_getnameinfo.U):
1167 This variable conditionally defines the HAS_GETNAMEINFO symbol,
1168 which indicates to the C program that the getnameinfo() function
1171 d_getnbyaddr (d_getnbyad.U):
1172 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
1173 indicates to the C program that the getnetbyaddr() routine is available
1174 to look up networks by their IP addresses.
1176 d_getnbyname (d_getnbynm.U):
1177 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
1178 indicates to the C program that the getnetbyname() routine is available
1179 to look up networks by their names.
1181 d_getnent (d_getnent.U):
1182 This variable conditionally defines HAS_GETNETENT if getnetent() is
1183 available to look up network names in some data base or another.
1185 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
1186 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
1187 which indicates to the C program that the getnetbyaddr_r()
1188 routine is available.
1190 d_getnetbyname_r (d_getnetbyname_r.U):
1191 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
1192 which indicates to the C program that the getnetbyname_r()
1193 routine is available.
1195 d_getnetent_r (d_getnetent_r.U):
1196 This variable conditionally defines the HAS_GETNETENT_R symbol,
1197 which indicates to the C program that the getnetent_r()
1198 routine is available.
1200 d_getnetprotos (d_getnetprotos.U):
1201 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1202 which indicates to the C program that <netdb.h> supplies
1203 prototypes for the various getnet*() functions.
1204 See also netdbtype.U for probing for various netdb types.
1206 d_getpagsz (d_getpagsz.U):
1207 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1208 is available to get the system page size.
1210 d_getpbyname (d_getprotby.U):
1211 This variable conditionally defines the HAS_GETPROTOBYNAME
1212 symbol, which indicates to the C program that the
1213 getprotobyname() routine is available to look up protocols
1216 d_getpbynumber (d_getprotby.U):
1217 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1218 symbol, which indicates to the C program that the
1219 getprotobynumber() routine is available to look up protocols
1222 d_getpent (d_getpent.U):
1223 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1224 available to look up protocols in some data base or another.
1226 d_getpgid (d_getpgid.U):
1227 This variable conditionally defines the HAS_GETPGID symbol, which
1228 indicates to the C program that the getpgid(pid) function
1229 is available to get the process group id.
1231 d_getpgrp (d_getpgrp.U):
1232 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1233 available to get the current process group.
1235 d_getpgrp2 (d_getpgrp2.U):
1236 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1237 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1238 is available to get the current process group.
1240 d_getppid (d_getppid.U):
1241 This variable conditionally defines the HAS_GETPPID symbol, which
1242 indicates to the C program that the getppid() routine is available
1243 to get the parent process ID.
1245 d_getprior (d_getprior.U):
1246 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1247 is available to get a process's priority.
1249 d_getprotobyname_r (d_getprotobyname_r.U):
1250 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1251 which indicates to the C program that the getprotobyname_r()
1252 routine is available.
1254 d_getprotobynumber_r (d_getprotobynumber_r.U):
1255 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1256 which indicates to the C program that the getprotobynumber_r()
1257 routine is available.
1259 d_getprotoent_r (d_getprotoent_r.U):
1260 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1261 which indicates to the C program that the getprotoent_r()
1262 routine is available.
1264 d_getprotoprotos (d_getprotoprotos.U):
1265 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1266 which indicates to the C program that <netdb.h> supplies
1267 prototypes for the various getproto*() functions.
1268 See also netdbtype.U for probing for various netdb types.
1270 d_getprpwnam (d_getprpwnam.U):
1271 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1272 available to retrieve protected (shadow) password entries by name.
1274 d_getpwent (d_getpwent.U):
1275 This variable conditionally defines the HAS_GETPWENT symbol, which
1276 indicates to the C program that the getpwent() routine is available
1277 for sequential access of the passwd database.
1279 d_getpwent_r (d_getpwent_r.U):
1280 This variable conditionally defines the HAS_GETPWENT_R symbol,
1281 which indicates to the C program that the getpwent_r()
1282 routine is available.
1284 d_getpwnam_r (d_getpwnam_r.U):
1285 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1286 which indicates to the C program that the getpwnam_r()
1287 routine is available.
1289 d_getpwuid_r (d_getpwuid_r.U):
1290 This variable conditionally defines the HAS_GETPWUID_R symbol,
1291 which indicates to the C program that the getpwuid_r()
1292 routine is available.
1294 d_getsbyname (d_getsrvby.U):
1295 This variable conditionally defines the HAS_GETSERVBYNAME
1296 symbol, which indicates to the C program that the
1297 getservbyname() routine is available to look up services
1300 d_getsbyport (d_getsrvby.U):
1301 This variable conditionally defines the HAS_GETSERVBYPORT
1302 symbol, which indicates to the C program that the
1303 getservbyport() routine is available to look up services
1306 d_getsent (d_getsent.U):
1307 This variable conditionally defines HAS_GETSERVENT if getservent() is
1308 available to look up network services in some data base or another.
1310 d_getservbyname_r (d_getservbyname_r.U):
1311 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1312 which indicates to the C program that the getservbyname_r()
1313 routine is available.
1315 d_getservbyport_r (d_getservbyport_r.U):
1316 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1317 which indicates to the C program that the getservbyport_r()
1318 routine is available.
1320 d_getservent_r (d_getservent_r.U):
1321 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1322 which indicates to the C program that the getservent_r()
1323 routine is available.
1325 d_getservprotos (d_getservprotos.U):
1326 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1327 which indicates to the C program that <netdb.h> supplies
1328 prototypes for the various getserv*() functions.
1329 See also netdbtype.U for probing for various netdb types.
1331 d_getspnam (d_getspnam.U):
1332 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1333 available to retrieve SysV shadow password entries by name.
1335 d_getspnam_r (d_getspnam_r.U):
1336 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1337 which indicates to the C program that the getspnam_r()
1338 routine is available.
1340 d_gettimeod (d_ftime.U):
1341 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1342 indicates that the gettimeofday() system call exists (to obtain a
1343 sub-second accuracy clock). You should probably include <sys/resource.h>.
1345 d_gmtime64 (d_timefuncs64.U):
1346 This variable conditionally defines the HAS_GMTIME64 symbol, which
1347 indicates to the C program that the gmtime64 () routine is available.
1349 d_gmtime_r (d_gmtime_r.U):
1350 This variable conditionally defines the HAS_GMTIME_R symbol,
1351 which indicates to the C program that the gmtime_r()
1352 routine is available.
1354 d_gnulibc (d_gnulibc.U):
1355 Defined if we're dealing with the GNU C Library.
1357 d_grpasswd (i_grp.U):
1358 This variable conditionally defines GRPASSWD, which indicates
1359 that struct group in <grp.h> contains gr_passwd.
1361 d_has_C_UTF8 (d_setlocale.U):
1362 This variable is set to either "true" or "false" depending on
1363 whether the compilation system supports the C.UTF-8 locale.
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_inetaton (d_inetaton.U):
1394 This variable conditionally defines the HAS_INET_ATON symbol, which
1395 indicates to the C program that the inet_aton() function is available
1396 to parse IP address "dotted-quad" strings.
1398 d_inetntop (d_inetntop.U):
1399 This variable conditionally defines the HAS_INETNTOP symbol,
1400 which indicates to the C program that the inet_ntop() function
1403 d_inetpton (d_inetpton.U):
1404 This variable conditionally defines the HAS_INETPTON symbol,
1405 which indicates to the C program that the inet_pton() function
1408 d_int64_t (d_int64_t.U):
1409 This symbol will be defined if the C compiler supports int64_t.
1411 d_ip_mreq (d_socket.U):
1412 This variable conditionally defines the HAS_IP_MREQ symbol, which
1413 indicates the availability of a struct ip_mreq.
1415 d_ip_mreq_source (d_socket.U):
1416 This variable conditionally defines the HAS_IP_MREQ_SOURCE symbol,
1417 which indicates the availability of a struct ip_mreq_source.
1419 d_ipv6_mreq (d_socket.U):
1420 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
1421 indicates the availability of a struct ipv6_mreq.
1423 d_ipv6_mreq_source (d_socket.U):
1424 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE symbol,
1425 which indicates the availability of a struct ipv6_mreq_source.
1427 d_isascii (d_isascii.U):
1428 This variable conditionally defines the HAS_ISASCII constant,
1429 which indicates to the C program that isascii() is available.
1431 d_isblank (d_isblank.U):
1432 This variable conditionally defines the HAS_ISBLANK constant,
1433 which indicates to the C program that isblank() is available.
1435 d_isfinite (d_isfinite.U):
1436 This variable conditionally defines the HAS_ISFINITE symbol, which
1437 indicates to the C program that the isfinite() routine is available.
1439 d_isfinitel (d_isfinitel.U):
1440 This variable conditionally defines the HAS_ISFINITEL symbol, which
1441 indicates to the C program that the isfinitel() routine is available.
1443 d_isinf (d_isinf.U):
1444 This variable conditionally defines the HAS_ISINF symbol, which
1445 indicates to the C program that the isinf() routine is available.
1447 d_isinfl (d_isinfl.U):
1448 This variable conditionally defines the HAS_ISINFL symbol, which
1449 indicates to the C program that the isinfl() routine is available.
1451 d_isless (d_isless.U):
1452 This variable conditionally defines the HAS_ISLESS symbol, which
1453 indicates to the C program that the isless() routine is available.
1455 d_isnan (d_isnan.U):
1456 This variable conditionally defines the HAS_ISNAN symbol, which
1457 indicates to the C program that the isnan() routine is available.
1459 d_isnanl (d_isnanl.U):
1460 This variable conditionally defines the HAS_ISNANL symbol, which
1461 indicates to the C program that the isnanl() routine is available.
1463 d_isnormal (d_isnormal.U):
1464 This variable conditionally defines the HAS_ISNORMAL symbol, which
1465 indicates to the C program that the isnormal() routine is available.
1468 This variable conditionally defines the HAS_J0 symbol, which
1469 indicates to the C program that the j0() routine is available.
1472 This variable conditionally defines the HAS_J0L symbol, which
1473 indicates to the C program that the j0l() routine is available.
1475 d_killpg (d_killpg.U):
1476 This variable conditionally defines the HAS_KILLPG symbol, which
1477 indicates to the C program that the killpg() routine is available
1478 to kill process groups.
1480 d_lc_monetary_2008 (d_lc_monetary_2008.U):
1481 This variable conditionally defines HAS_LC_MONETARY_2008 if libc
1482 has the international currency locale rules from POSIX
1485 d_lchown (d_lchown.U):
1486 This variable conditionally defines the HAS_LCHOWN symbol, which
1487 indicates to the C program that the lchown() routine is available
1488 to operate on a symbolic link (instead of following the link).
1490 d_ldbl_dig (d_ldbl_dig.U):
1491 This variable conditionally defines d_ldbl_dig if this system's
1492 header files provide LDBL_DIG, which is the number of significant
1493 digits in a long double precision number.
1495 d_ldexpl (d_longdbl.U):
1496 This variable conditionally defines the HAS_LDEXPL symbol, which
1497 indicates to the C program that the ldexpl() routine is available.
1499 d_lgamma (d_lgamma.U):
1500 This variable conditionally defines the HAS_LGAMMA symbol, which
1501 indicates to the C program that the lgamma() routine is available
1502 for the log gamma function. See also d_tgamma and d_lgamma_r.
1504 d_lgamma_r (d_lgamma_r.U):
1505 This variable conditionally defines the HAS_LGAMMA_R symbol, which
1506 indicates to the C program that the lgamma_r() routine is available
1507 for the log gamma function, without using the global signgam variable.
1509 d_libm_lib_version (d_libm_lib_version.U):
1510 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1511 which indicates to the C program that math.h defines _LIB_VERSION
1512 being available in libm
1514 d_libname_unique (so.U):
1515 This variable is defined if the target system insists on unique
1516 basenames for shared library files. This is currently true on Android,
1517 false everywhere else we know of.
1518 Defaults to 'undef'.
1521 This variable conditionally defines HAS_LINK if link() is
1522 available to create hard links.
1524 d_linkat (d_fsat.U):
1525 This variable conditionally defines the HAS_LINKAT symbol, which
1526 indicates the POSIX linkat() function is available.
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_localeconv_l (d_localeconv_l.U):
1551 This variable conditionally defines the HAS_LOCALECONV_L symbol, which
1552 indicates to the C program that the localeconv_l() routine is available.
1554 d_localtime64 (d_timefuncs64.U):
1555 This variable conditionally defines the HAS_LOCALTIME64 symbol, which
1556 indicates to the C program that the localtime64 () routine is available.
1558 d_localtime_r (d_localtime_r.U):
1559 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1560 which indicates to the C program that the localtime_r()
1561 routine is available.
1563 d_localtime_r_needs_tzset (d_localtime_r.U):
1564 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1565 symbol, which makes us call tzset before localtime_r()
1567 d_locconv (d_locconv.U):
1568 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1569 available for numeric and monetary formatting conventions.
1571 d_lockf (d_lockf.U):
1572 This variable conditionally defines HAS_LOCKF if lockf() is
1573 available to do file locking.
1575 d_log1p (d_log1p.U):
1576 This variable conditionally defines the HAS_LOG1P symbol, which
1577 indicates to the C program that the logp1() routine is available
1578 to compute log(1 + x) for values of x close to zero.
1581 This variable conditionally defines the HAS_LOG2 symbol, which
1582 indicates to the C program that the log2() routine is available
1583 to compute log base two.
1586 This variable conditionally defines the HAS_LOGB symbol, which
1587 indicates to the C program that the logb() routine is available
1588 to extract the exponent of x.
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_longdbl (d_longdbl.U):
1615 This variable conditionally defines HAS_LONG_DOUBLE if
1616 the long double type is supported.
1618 d_longlong (d_longlong.U):
1619 This variable conditionally defines HAS_LONG_LONG if
1620 the long long type is supported.
1622 d_lrint (d_lrint.U):
1623 This variable conditionally defines the HAS_LRINT symbol, which
1624 indicates to the C program that the lrint() routine is available
1625 to return the integral value closest to a double (according
1626 to the current rounding mode).
1628 d_lrintl (d_lrintl.U):
1629 This variable conditionally defines the HAS_LRINTL symbol, which
1630 indicates to the C program that the lrintl() routine is available
1631 to return the integral value closest to a long double (according
1632 to the current rounding mode).
1634 d_lround (d_lround.U):
1635 This variable conditionally defines the HAS_LROUND symbol, which
1636 indicates to the C program that the lround() routine is available
1637 to return the integral value nearest to x.
1639 d_lroundl (d_lroundl.U):
1640 This variable conditionally defines the HAS_LROUNDL symbol, which
1641 indicates to the C program that the lroundl() routine is available
1642 to return the integral value nearest to x away from zero.
1644 d_lseekproto (d_lseekproto.U):
1645 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1646 which indicates to the C program that the system provides
1647 a prototype for the lseek() function. Otherwise, it is
1648 up to the program to supply one.
1650 d_lstat (d_lstat.U):
1651 This variable conditionally defines HAS_LSTAT if lstat() is
1652 available to do file stats on symbolic links.
1654 d_madvise (d_madvise.U):
1655 This variable conditionally defines HAS_MADVISE if madvise() is
1656 available to map a file into memory.
1658 d_malloc_good_size (d_malloc_size.U):
1659 This symbol, if defined, indicates that the malloc_good_size
1660 routine is available for use.
1662 d_malloc_size (d_malloc_size.U):
1663 This symbol, if defined, indicates that the malloc_size
1664 routine is available for use.
1666 d_mblen (d_mblen.U):
1667 This variable conditionally defines the HAS_MBLEN symbol, which
1668 indicates to the C program that the mblen() routine is available
1669 to find the number of bytes in a multibye character.
1671 d_mbrlen (d_mbrlen.U):
1672 This variable conditionally defines the HAS_MBRLEN symbol if the
1673 mbrlen() routine is available to be used to get the length of
1674 multi-byte character strings.
1676 d_mbrtowc (d_mbrtowc.U):
1677 This variable conditionally defines the HAS_MBRTOWC symbol if the
1678 mbrtowc() routine is available to be used to convert a multi-byte
1679 character into a wide character.
1681 d_mbstowcs (d_mbstowcs.U):
1682 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1683 indicates to the C program that the mbstowcs() routine is available
1684 to convert a multibyte string into a wide character string.
1686 d_mbtowc (d_mbtowc.U):
1687 This variable conditionally defines the HAS_MBTOWC symbol, which
1688 indicates to the C program that the mbtowc() routine is available
1689 to convert multibyte to a wide character.
1691 d_memmem (d_memmem.U):
1692 This variable conditionally defines the HAS_MEMMEM symbol, which
1693 indicates to the C program that the memmem() routine is available
1694 to return a pointer to the start of the first occurance of a
1695 substring in a memory area (or NULL if not found).
1697 d_memrchr (d_memrchr.U):
1698 This variable conditionally defines the HAS_MEMRCHR symbol, which
1699 indicates to the C program that the memrchr() routine is available
1700 to return a pointer to the last occurrence of a byte in a memory
1701 area (or NULL if not found).
1703 d_mkdir (d_mkdir.U):
1704 This variable conditionally defines the HAS_MKDIR symbol, which
1705 indicates to the C program that the mkdir() routine is available
1706 to create directories..
1708 d_mkdtemp (d_mkdtemp.U):
1709 This variable conditionally defines the HAS_MKDTEMP symbol, which
1710 indicates to the C program that the mkdtemp() routine is available
1711 to exclusively create a uniquely named temporary directory.
1713 d_mkfifo (d_mkfifo.U):
1714 This variable conditionally defines the HAS_MKFIFO symbol, which
1715 indicates to the C program that the mkfifo() routine is available.
1717 d_mkostemp (d_mkostemp.U):
1718 This variable conditionally defines HAS_MKOSTEMP if mkostemp() is
1719 available to exclusively create and open a uniquely named (with a
1720 suffix) temporary file.
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.
1825 d_nanosleep (d_nanosleep.U):
1826 This variable conditionally defines HAS_NANOSLEEP
1827 if nanosleep() is available to sleep with 1E-9 sec accuracy.
1830 This variable conditionally defines the HAS_NDBM symbol, which
1831 indicates that both the ndbm.h include file and an appropriate ndbm
1832 library exist. Consult the different i_*ndbm variables
1833 to find out the actual include location. Sometimes, a system has the
1834 header file but not the library. This variable will only be set if
1835 the system has both.
1837 d_ndbm_h_uses_prototypes (i_ndbm.U):
1838 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1839 which indicates that the ndbm.h include file uses real ANSI C
1840 prototypes instead of K&R style function declarations. K&R style
1841 declarations are unsupported in C++, so the include file requires
1842 special handling when using a C++ compiler and this variable is
1843 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1844 to get the same information for alternative ndbm.h include files.
1846 d_nearbyint (d_nearbyint.U):
1847 This variable conditionally defines HAS_NEARBYINT if nearbyint()
1848 is available to return the integral value closest to (according to
1849 the current rounding mode) to x.
1851 d_newlocale (d_newlocale.U):
1852 This variable conditionally defines the HAS_NEWLOCALE symbol, which
1853 indicates to the C program that the newlocale() routine is available
1854 to return a new locale object or modify an existing locale object.
1856 d_nextafter (d_nextafter.U):
1857 This variable conditionally defines HAS_NEXTAFTER if nextafter()
1858 is available to return the next machine representable double from
1861 d_nexttoward (d_nexttoward.U):
1862 This variable conditionally defines HAS_NEXTTOWARD if nexttoward()
1863 is available to return the next machine representable long double from
1867 This variable conditionally defines the HAS_NICE symbol, which
1868 indicates to the C program that the nice() routine is available.
1870 d_nl_langinfo (d_nl_langinfo.U):
1871 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1872 indicates to the C program that the nl_langinfo() routine is available.
1874 d_nv_preserves_uv (perlxv.U):
1875 This variable indicates whether a variable of type nvtype
1876 can preserve all the bits a variable of type uvtype.
1878 d_nv_zero_is_allbits_zero (perlxv.U):
1879 This variable indicates whether a variable of type nvtype
1880 stores 0.0 in memory as all bits zero.
1882 d_off64_t (d_off64_t.U):
1883 This symbol will be defined if the C compiler supports off64_t.
1885 d_old_pthread_create_joinable (d_pthrattrj.U):
1886 This variable conditionally defines pthread_create_joinable.
1887 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1889 d_oldpthreads (usethreads.U):
1890 This variable conditionally defines the OLD_PTHREADS_API symbol,
1891 and indicates that Perl should be built to use the old
1892 draft POSIX threads API. This is only potentially meaningful if
1895 d_oldsock (d_socket.U):
1896 This variable conditionally defines the OLDSOCKET symbol, which
1897 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1899 d_open3 (d_open3.U):
1900 This variable conditionally defines the HAS_OPEN3 manifest constant,
1901 which indicates to the C program that the 3 argument version of
1902 the open(2) function is available.
1904 d_openat (d_fsat.U):
1905 This variable conditionally defines the HAS_OPENAT symbol, which
1906 indicates the POSIX openat() function is available.
1908 d_pathconf (d_pathconf.U):
1909 This variable conditionally defines the HAS_PATHCONF symbol, which
1910 indicates to the C program that the pathconf() routine is available
1911 to determine file-system related limits and options associated
1912 with a given filename.
1914 d_pause (d_pause.U):
1915 This variable conditionally defines the HAS_PAUSE symbol, which
1916 indicates to the C program that the pause() routine is available
1917 to suspend a process until a signal is received.
1919 d_perl_otherlibdirs (otherlibdirs.U):
1920 This variable conditionally defines PERL_OTHERLIBDIRS, which
1921 contains a colon-separated set of paths for the perl binary to
1922 include in @INC. See also otherlibdirs.
1924 d_phostname (d_gethname.U):
1925 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1926 contains the shell command which, when fed to popen(), may be
1927 used to derive the host name.
1930 This variable conditionally defines the HAS_PIPE symbol, which
1931 indicates to the C program that the pipe() routine is available
1932 to create an inter-process channel.
1934 d_pipe2 (d_pipe2.U):
1935 This variable conditionally defines the HAS_PIPE2 symbol, which
1936 indicates to the C program that the pipe2() routine is available
1937 to create an inter-process channel.
1940 This variable conditionally defines the HAS_POLL symbol, which
1941 indicates to the C program that the poll() routine is available
1942 to poll active file descriptors.
1944 d_portable (d_portable.U):
1945 This variable conditionally defines the PORTABLE symbol, which
1946 indicates to the C program that it should not assume that it is
1947 running on the machine it was compiled on.
1949 d_prctl (d_prctl.U):
1950 This variable conditionally defines the HAS_PRCTL symbol, which
1951 indicates to the C program that the prctl() routine is available.
1952 Note that there are at least two prctl variants: Linux and Irix.
1953 While they are somewhat similar, they are incompatible.
1955 d_prctl_set_name (d_prctl.U):
1956 This variable conditionally defines the HAS_PRCTL_SET_NAME symbol,
1957 which indicates to the C program that the prctl() routine supports
1958 the PR_SET_NAME option.
1960 d_PRId64 (quadfio.U):
1961 This variable conditionally defines the PERL_PRId64 symbol, which
1962 indicates that stdio has a symbol to print 64-bit decimal numbers.
1964 d_PRIeldbl (longdblfio.U):
1965 This variable conditionally defines the PERL_PRIfldbl symbol, which
1966 indicates that stdio has a symbol to print long doubles.
1968 d_PRIEUldbl (longdblfio.U):
1969 This variable conditionally defines the PERL_PRIfldbl symbol, which
1970 indicates that stdio has a symbol to print long doubles.
1971 The 'U' in the name is to separate this from d_PRIeldbl so that even
1972 case-blind systems can see the difference.
1974 d_PRIfldbl (longdblfio.U):
1975 This variable conditionally defines the PERL_PRIfldbl symbol, which
1976 indicates that stdio has a symbol to print long doubles.
1978 d_PRIFUldbl (longdblfio.U):
1979 This variable conditionally defines the PERL_PRIfldbl symbol, which
1980 indicates that stdio has a symbol to print long doubles.
1981 The 'U' in the name is to separate this from d_PRIfldbl so that even
1982 case-blind systems can see the difference.
1984 d_PRIgldbl (longdblfio.U):
1985 This variable conditionally defines the PERL_PRIfldbl symbol, which
1986 indicates that stdio has a symbol to print long doubles.
1988 d_PRIGUldbl (longdblfio.U):
1989 This variable conditionally defines the PERL_PRIfldbl symbol, which
1990 indicates that stdio has a symbol to print long doubles.
1991 The 'U' in the name is to separate this from d_PRIgldbl so that even
1992 case-blind systems can see the difference.
1994 d_PRIi64 (quadfio.U):
1995 This variable conditionally defines the PERL_PRIi64 symbol, which
1996 indicates that stdio has a symbol to print 64-bit decimal numbers.
1998 d_printf_format_null (d_attribut.U):
1999 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
2000 indicates the C compiler allows printf-like formats to be null.
2002 d_PRIo64 (quadfio.U):
2003 This variable conditionally defines the PERL_PRIo64 symbol, which
2004 indicates that stdio has a symbol to print 64-bit octal numbers.
2006 d_PRIu64 (quadfio.U):
2007 This variable conditionally defines the PERL_PRIu64 symbol, which
2008 indicates that stdio has a symbol to print 64-bit unsigned decimal
2011 d_PRIx64 (quadfio.U):
2012 This variable conditionally defines the PERL_PRIx64 symbol, which
2013 indicates that stdio has a symbol to print 64-bit hexadecimal numbers.
2015 d_PRIXU64 (quadfio.U):
2016 This variable conditionally defines the PERL_PRIXU64 symbol, which
2017 indicates that stdio has a symbol to print 64-bit hExADECimAl numbers.
2018 The 'U' in the name is to separate this from d_PRIx64 so that even
2019 case-blind systems can see the difference.
2021 d_procselfexe (d_procselfexe.U):
2022 Defined if $procselfexe is symlink to the absolute
2023 pathname of the executing program.
2025 d_pseudofork (d_vfork.U):
2026 This variable conditionally defines the HAS_PSEUDOFORK symbol,
2027 which indicates that an emulation of the fork routine is available.
2029 d_pthread_atfork (d_pthread_atfork.U):
2030 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
2031 which indicates to the C program that the pthread_atfork()
2032 routine is available.
2034 d_pthread_attr_setscope (d_pthread_attr_ss.U):
2035 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
2036 pthread_attr_setscope() is available to set the contention scope
2037 attribute of a thread attribute object.
2039 d_pthread_yield (d_pthread_y.U):
2040 This variable conditionally defines the HAS_PTHREAD_YIELD
2041 symbol if the pthread_yield routine is available to yield
2042 the execution of the current thread.
2044 d_ptrdiff_t (d_ptrdiff_t.U):
2045 This symbol will be defined if the C compiler supports ptrdiff_t.
2048 This variable conditionally defines PWAGE, which indicates
2049 that struct passwd contains pw_age.
2051 d_pwchange (i_pwd.U):
2052 This variable conditionally defines PWCHANGE, which indicates
2053 that struct passwd contains pw_change.
2055 d_pwclass (i_pwd.U):
2056 This variable conditionally defines PWCLASS, which indicates
2057 that struct passwd contains pw_class.
2059 d_pwcomment (i_pwd.U):
2060 This variable conditionally defines PWCOMMENT, which indicates
2061 that struct passwd contains pw_comment.
2063 d_pwexpire (i_pwd.U):
2064 This variable conditionally defines PWEXPIRE, which indicates
2065 that struct passwd contains pw_expire.
2067 d_pwgecos (i_pwd.U):
2068 This variable conditionally defines PWGECOS, which indicates
2069 that struct passwd contains pw_gecos.
2071 d_pwpasswd (i_pwd.U):
2072 This variable conditionally defines PWPASSWD, which indicates
2073 that struct passwd contains pw_passwd.
2075 d_pwquota (i_pwd.U):
2076 This variable conditionally defines PWQUOTA, which indicates
2077 that struct passwd contains pw_quota.
2079 d_qgcvt (d_qgcvt.U):
2080 This variable conditionally defines the HAS_QGCVT symbol, which
2081 indicates to the C program that the qgcvt() routine is available.
2083 d_quad (quadtype.U):
2084 This variable, if defined, tells that there's a 64-bit integer type,
2087 d_querylocale (d_newlocale.U):
2088 This variable conditionally defines the HAS_QUERYLOCALE symbol, which
2089 indicates to the C program that the querylocale() routine is available
2090 to return the name of the locale for a category mask.
2092 d_random_r (d_random_r.U):
2093 This variable conditionally defines the HAS_RANDOM_R symbol,
2094 which indicates to the C program that the random_r()
2095 routine is available.
2097 d_re_comp (d_regcmp.U):
2098 This variable conditionally defines the HAS_RECOMP symbol, which
2099 indicates to the C program that the re_comp() routine is available
2100 for regular patern matching (usally on BSD). If so, it is likely that
2103 d_readdir (d_readdir.U):
2104 This variable conditionally defines HAS_READDIR if readdir() is
2105 available to read directory entries.
2107 d_readdir64_r (d_readdir64_r.U):
2108 This variable conditionally defines the HAS_READDIR64_R symbol,
2109 which indicates to the C program that the readdir64_r()
2110 routine is available.
2112 d_readdir_r (d_readdir_r.U):
2113 This variable conditionally defines the HAS_READDIR_R symbol,
2114 which indicates to the C program that the readdir_r()
2115 routine is available.
2117 d_readlink (d_readlink.U):
2118 This variable conditionally defines the HAS_READLINK symbol, which
2119 indicates to the C program that the readlink() routine is available
2120 to read the value of a symbolic link.
2122 d_readv (d_readv.U):
2123 This variable conditionally defines the HAS_READV symbol, which
2124 indicates to the C program that the readv() routine is available.
2126 d_recvmsg (d_recvmsg.U):
2127 This variable conditionally defines the HAS_RECVMSG symbol, which
2128 indicates to the C program that the recvmsg() routine is available.
2130 d_regcmp (d_regcmp.U):
2131 This variable conditionally defines the HAS_REGCMP symbol, which
2132 indicates to the C program that the regcmp() routine is available
2133 for regular patern matching (usally on System V).
2135 d_regcomp (d_regcmp.U):
2136 This variable conditionally defines the HAS_REGCOMP symbol, which
2137 indicates to the C program that the regcomp() routine is available
2138 for regular patern matching (usally on POSIX.2 conforming systems).
2140 d_remainder (d_remainder.U):
2141 This variable conditionally defines the HAS_REMAINDER symbol, which
2142 indicates to the C program that the remainder() routine is available.
2144 d_remquo (d_remquo.U):
2145 This variable conditionally defines the HAS_REMQUO symbol, which
2146 indicates to the C program that the remquo() routine is available.
2148 d_rename (d_rename.U):
2149 This variable conditionally defines the HAS_RENAME symbol, which
2150 indicates to the C program that the rename() routine is available
2153 d_renameat (d_fsat.U):
2154 This variable conditionally defines the HAS_RENAMEAT symbol, which
2155 indicates the POSIX renameat() function is available.
2157 d_rewinddir (d_readdir.U):
2158 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
2162 This variable conditionally defines the HAS_RINT symbol, which
2163 indicates to the C program that the rint() routine is available.
2165 d_rmdir (d_rmdir.U):
2166 This variable conditionally defines HAS_RMDIR if rmdir() is
2167 available to remove directories.
2169 d_round (d_round.U):
2170 This variable conditionally defines the HAS_ROUND symbol, which
2171 indicates to the C program that the round() routine is available.
2173 d_sbrkproto (d_sbrkproto.U):
2174 This variable conditionally defines the HAS_SBRK_PROTO symbol,
2175 which indicates to the C program that the system provides
2176 a prototype for the sbrk() function. Otherwise, it is
2177 up to the program to supply one.
2179 d_scalbn (d_scalbn.U):
2180 This variable conditionally defines the HAS_SCALBN symbol, which
2181 indicates to the C program that the scalbn() routine is available.
2183 d_scalbnl (d_scalbnl.U):
2184 This variable conditionally defines the HAS_SCALBNL symbol, which
2185 indicates to the C program that the scalbnl() routine is available.
2186 If ilogbl is also present we can emulate frexpl.
2188 d_sched_yield (d_pthread_y.U):
2189 This variable conditionally defines the HAS_SCHED_YIELD
2190 symbol if the sched_yield routine is available to yield
2191 the execution of the current thread.
2193 d_scm_rights (d_socket.U):
2194 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
2195 which indicates that the SCM_RIGHTS is available. #ifdef is
2196 not enough because it may be an enum, glibc has been known to do this.
2198 d_SCNfldbl (longdblfio.U):
2199 This variable conditionally defines the PERL_PRIfldbl symbol, which
2200 indicates that stdio has a symbol to scan long doubles.
2202 d_seekdir (d_readdir.U):
2203 This variable conditionally defines HAS_SEEKDIR if seekdir() is
2206 d_select (d_select.U):
2207 This variable conditionally defines HAS_SELECT if select() is
2208 available to select active file descriptors. A <sys/time.h>
2209 inclusion may be necessary for the timeout field.
2212 This variable conditionally defines the HAS_SEM symbol, which
2213 indicates that the entire sem*(2) library is present.
2215 d_semctl (d_semctl.U):
2216 This variable conditionally defines the HAS_SEMCTL symbol, which
2217 indicates to the C program that the semctl() routine is available.
2219 d_semctl_semid_ds (d_union_semun.U):
2220 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
2221 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
2223 d_semctl_semun (d_union_semun.U):
2224 This variable conditionally defines USE_SEMCTL_SEMUN, which
2225 indicates that union semun is to be used for semctl IPC_STAT.
2227 d_semget (d_semget.U):
2228 This variable conditionally defines the HAS_SEMGET symbol, which
2229 indicates to the C program that the semget() routine is available.
2231 d_semop (d_semop.U):
2232 This variable conditionally defines the HAS_SEMOP symbol, which
2233 indicates to the C program that the semop() routine is available.
2235 d_sendmsg (d_sendmsg.U):
2236 This variable conditionally defines the HAS_SENDMSG symbol, which
2237 indicates to the C program that the sendmsg() routine is available.
2239 d_setegid (d_setegid.U):
2240 This variable conditionally defines the HAS_SETEGID symbol, which
2241 indicates to the C program that the setegid() routine is available
2242 to change the effective gid of the current program.
2244 d_seteuid (d_seteuid.U):
2245 This variable conditionally defines the HAS_SETEUID symbol, which
2246 indicates to the C program that the seteuid() routine is available
2247 to change the effective uid of the current program.
2249 d_setgrent (d_setgrent.U):
2250 This variable conditionally defines the HAS_SETGRENT symbol, which
2251 indicates to the C program that the setgrent() routine is available
2252 for initializing sequential access to the group database.
2254 d_setgrent_r (d_setgrent_r.U):
2255 This variable conditionally defines the HAS_SETGRENT_R symbol,
2256 which indicates to the C program that the setgrent_r()
2257 routine is available.
2259 d_setgrps (d_setgrps.U):
2260 This variable conditionally defines the HAS_SETGROUPS symbol, which
2261 indicates to the C program that the setgroups() routine is available
2262 to set the list of process groups.
2264 d_sethent (d_sethent.U):
2265 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
2268 d_sethostent_r (d_sethostent_r.U):
2269 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
2270 which indicates to the C program that the sethostent_r()
2271 routine is available.
2273 d_setitimer (d_setitimer.U):
2274 This variable conditionally defines the HAS_SETITIMER symbol, which
2275 indicates to the C program that the setitimer() routine is available.
2277 d_setlinebuf (d_setlnbuf.U):
2278 This variable conditionally defines the HAS_SETLINEBUF symbol, which
2279 indicates to the C program that the setlinebuf() routine is available
2280 to change stderr or stdout from block-buffered or unbuffered to a
2283 d_setlocale (d_setlocale.U):
2284 This variable conditionally defines HAS_SETLOCALE if setlocale() is
2285 available to handle locale-specific ctype implementations.
2287 d_setlocale_accepts_any_locale_name (d_setlocale.U):
2288 This variable conditionally defines SETLOCALE_ACCEPTS_ANY_LOCALE_NAME
2289 if setlocale() accepts any locale name.
2291 d_setlocale_r (d_setlocale_r.U):
2292 This variable conditionally defines the HAS_SETLOCALE_R symbol,
2293 which indicates to the C program that the setlocale_r()
2294 routine is available.
2296 d_setnent (d_setnent.U):
2297 This variable conditionally defines HAS_SETNETENT if setnetent() is
2300 d_setnetent_r (d_setnetent_r.U):
2301 This variable conditionally defines the HAS_SETNETENT_R symbol,
2302 which indicates to the C program that the setnetent_r()
2303 routine is available.
2305 d_setpent (d_setpent.U):
2306 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
2309 d_setpgid (d_setpgid.U):
2310 This variable conditionally defines the HAS_SETPGID symbol if the
2311 setpgid(pid, gpid) function is available to set process group ID.
2313 d_setpgrp (d_setpgrp.U):
2314 This variable conditionally defines HAS_SETPGRP if setpgrp() is
2315 available to set the current process group.
2317 d_setpgrp2 (d_setpgrp2.U):
2318 This variable conditionally defines the HAS_SETPGRP2 symbol, which
2319 indicates to the C program that the setpgrp2() (as in DG/UX) routine
2320 is available to set the current process group.
2322 d_setprior (d_setprior.U):
2323 This variable conditionally defines HAS_SETPRIORITY if setpriority()
2324 is available to set a process's priority.
2326 d_setproctitle (d_setproctitle.U):
2327 This variable conditionally defines the HAS_SETPROCTITLE symbol,
2328 which indicates to the C program that the setproctitle() routine
2331 d_setprotoent_r (d_setprotoent_r.U):
2332 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
2333 which indicates to the C program that the setprotoent_r()
2334 routine is available.
2336 d_setpwent (d_setpwent.U):
2337 This variable conditionally defines the HAS_SETPWENT symbol, which
2338 indicates to the C program that the setpwent() routine is available
2339 for initializing sequential access to the passwd database.
2341 d_setpwent_r (d_setpwent_r.U):
2342 This variable conditionally defines the HAS_SETPWENT_R symbol,
2343 which indicates to the C program that the setpwent_r()
2344 routine is available.
2346 d_setregid (d_setregid.U):
2347 This variable conditionally defines HAS_SETREGID if setregid() is
2348 available to change the real and effective gid of the current
2351 d_setresgid (d_setregid.U):
2352 This variable conditionally defines HAS_SETRESGID if setresgid() is
2353 available to change the real, effective and saved gid of the current
2356 d_setresuid (d_setreuid.U):
2357 This variable conditionally defines HAS_SETREUID if setresuid() is
2358 available to change the real, effective and saved uid of the current
2361 d_setreuid (d_setreuid.U):
2362 This variable conditionally defines HAS_SETREUID if setreuid() is
2363 available to change the real and effective uid of the current
2366 d_setrgid (d_setrgid.U):
2367 This variable conditionally defines the HAS_SETRGID symbol, which
2368 indicates to the C program that the setrgid() routine is available
2369 to change the real gid of the current program.
2371 d_setruid (d_setruid.U):
2372 This variable conditionally defines the HAS_SETRUID symbol, which
2373 indicates to the C program that the setruid() routine is available
2374 to change the real uid of the current program.
2376 d_setsent (d_setsent.U):
2377 This variable conditionally defines HAS_SETSERVENT if setservent() is
2380 d_setservent_r (d_setservent_r.U):
2381 This variable conditionally defines the HAS_SETSERVENT_R symbol,
2382 which indicates to the C program that the setservent_r()
2383 routine is available.
2385 d_setsid (d_setsid.U):
2386 This variable conditionally defines HAS_SETSID if setsid() is
2387 available to set the process group ID.
2389 d_setvbuf (d_setvbuf.U):
2390 This variable conditionally defines the HAS_SETVBUF symbol, which
2391 indicates to the C program that the setvbuf() routine is available
2392 to change buffering on an open stdio stream.
2395 This variable conditionally defines the HAS_SHM symbol, which
2396 indicates that the entire shm*(2) library is present.
2398 d_shmat (d_shmat.U):
2399 This variable conditionally defines the HAS_SHMAT symbol, which
2400 indicates to the C program that the shmat() routine is available.
2402 d_shmatprototype (d_shmat.U):
2403 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
2404 symbol, which indicates that sys/shm.h has a prototype for
2407 d_shmctl (d_shmctl.U):
2408 This variable conditionally defines the HAS_SHMCTL symbol, which
2409 indicates to the C program that the shmctl() routine is available.
2411 d_shmdt (d_shmdt.U):
2412 This variable conditionally defines the HAS_SHMDT symbol, which
2413 indicates to the C program that the shmdt() routine is available.
2415 d_shmget (d_shmget.U):
2416 This variable conditionally defines the HAS_SHMGET symbol, which
2417 indicates to the C program that the shmget() routine is available.
2419 d_sigaction (d_sigaction.U):
2420 This variable conditionally defines the HAS_SIGACTION symbol, which
2421 indicates that the Vr4 sigaction() routine is available.
2423 d_siginfo_si_addr (d_siginfo_si.U):
2424 This variable conditionally defines the HAS_SIGINFO_SI_ADDR symbol,
2425 which indicates that the siginfo_t struct has the si_addr member.
2427 d_siginfo_si_band (d_siginfo_si.U):
2428 This variable conditionally defines the HAS_SIGINFO_SI_BAND symbol,
2429 which indicates that the siginfo_t struct has the si_band member.
2431 d_siginfo_si_errno (d_siginfo_si.U):
2432 This variable conditionally defines the HAS_SIGINFO_SI_ERRNO symbol,
2433 which indicates that the siginfo_t struct has the si_errno member.
2435 d_siginfo_si_fd (d_siginfo_si.U):
2436 This variable conditionally defines the HAS_SIGINFO_SI_FD symbol,
2437 which indicates that the siginfo_t struct has the si_fd member.
2439 d_siginfo_si_pid (d_siginfo_si.U):
2440 This variable conditionally defines the HAS_SIGINFO_SI_PID symbol,
2441 which indicates that the siginfo_t struct has the si_pid member.
2443 d_siginfo_si_status (d_siginfo_si.U):
2444 This variable conditionally defines the HAS_SIGINFO_SI_STATUS symbol,
2445 which indicates that the siginfo_t struct has the si_status member.
2447 d_siginfo_si_uid (d_siginfo_si.U):
2448 This variable conditionally defines the HAS_SIGINFO_SI_UID symbol,
2449 which indicates that the siginfo_t struct has the si_uid member.
2451 d_siginfo_si_value (d_siginfo_si.U):
2452 This variable conditionally defines the HAS_SIGINFO_SI_VALUE symbol,
2453 which indicates that the siginfo_t struct has the si_value member.
2455 d_signbit (d_signbit.U):
2456 This variable conditionally defines the HAS_SIGNBIT symbol, which
2457 indicates to the C program that the signbit() routine is available
2458 and safe to use with perl's intern NV type.
2460 d_sigprocmask (d_sigprocmask.U):
2461 This variable conditionally defines HAS_SIGPROCMASK
2462 if sigprocmask() is available to examine or change the signal mask
2463 of the calling process.
2465 d_sigsetjmp (d_sigsetjmp.U):
2466 This variable conditionally defines the HAS_SIGSETJMP symbol,
2467 which indicates that the sigsetjmp() routine is available to
2468 call setjmp() and optionally save the process's signal mask.
2470 d_sin6_scope_id (d_socket.U):
2471 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol, which
2472 indicates that a struct sockaddr_in6 structure has the sin6_scope_id
2475 d_sitearch (sitearch.U):
2476 This variable conditionally defines SITEARCH to hold the pathname
2477 of architecture-dependent library files for $package. If
2478 $sitearch is the same as $archlib, then this is set to undef.
2480 d_snprintf (d_snprintf.U):
2481 This variable conditionally defines the HAS_SNPRINTF symbol, which
2482 indicates to the C program that the snprintf () library function
2485 d_sockaddr_in6 (d_socket.U):
2486 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol, which
2487 indicates the availability of a struct sockaddr_in6.
2489 d_sockaddr_sa_len (d_socket.U):
2490 This variable conditionally defines the HAS_SOCKADDR_SA_LEN symbol,
2491 which indicates that a struct sockaddr structure has the sa_len
2494 d_sockatmark (d_sockatmark.U):
2495 This variable conditionally defines the HAS_SOCKATMARK symbol, which
2496 indicates to the C program that the sockatmark() routine is available.
2498 d_sockatmarkproto (d_sockatmarkproto.U):
2499 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
2500 which indicates to the C program that the system provides
2501 a prototype for the sockatmark() function. Otherwise, it is
2502 up to the program to supply one.
2504 d_socket (d_socket.U):
2505 This variable conditionally defines HAS_SOCKET, which indicates
2506 that the BSD socket interface is supported.
2508 d_socklen_t (d_socklen_t.U):
2509 This symbol will be defined if the C compiler supports socklen_t.
2511 d_sockpair (d_socket.U):
2512 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
2513 indicates that the BSD socketpair() is supported.
2515 d_socks5_init (d_socks5_init.U):
2516 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
2517 indicates to the C program that the socks5_init() routine is available.
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_strcoll (d_strcoll.U):
2606 This variable conditionally defines HAS_STRCOLL if strcoll() is
2607 available to compare strings using collating information.
2609 d_strerror_l (d_strerror_l.U):
2610 This variable conditionally defines the HAS_STRERROR_L symbol, which
2611 indicates to the C program that the strerror_l() routine is available
2612 to return the error message for a given errno value in a particular
2613 locale (identified by a locale_t object).
2615 d_strerror_r (d_strerror_r.U):
2616 This variable conditionally defines the HAS_STRERROR_R symbol,
2617 which indicates to the C program that the strerror_r()
2618 routine is available.
2620 d_strftime (d_strftime.U):
2621 This variable conditionally defines the HAS_STRFTIME symbol, which
2622 indicates to the C program that the strftime() routine is available.
2624 d_strlcat (d_strlcat.U):
2625 This variable conditionally defines the HAS_STRLCAT symbol, which
2626 indicates to the C program that the strlcat () routine is available.
2628 d_strlcpy (d_strlcpy.U):
2629 This variable conditionally defines the HAS_STRLCPY symbol, which
2630 indicates to the C program that the strlcpy () routine is available.
2632 d_strnlen (d_strnlen.U):
2633 This variable conditionally defines the HAS_STRNLEN symbol, which
2634 indicates to the C program that the strnlen () routine is available.
2636 d_strtod (d_strtod.U):
2637 This variable conditionally defines the HAS_STRTOD symbol, which
2638 indicates to the C program that the strtod() routine is available
2639 to provide better numeric string conversion than atof().
2641 d_strtod_l (d_strtod_l.U):
2642 This variable conditionally defines the HAS_STRTOD_L symbol, which
2643 indicates to the C program that the strtod_l() routine is available.
2645 d_strtol (d_strtol.U):
2646 This variable conditionally defines the HAS_STRTOL symbol, which
2647 indicates to the C program that the strtol() routine is available
2648 to provide better numeric string conversion than atoi() and friends.
2650 d_strtold (d_strtold.U):
2651 This variable conditionally defines the HAS_STRTOLD symbol, which
2652 indicates to the C program that the strtold() routine is available.
2654 d_strtold_l (d_strtold_l.U):
2655 This variable conditionally defines the HAS_STRTOLD_L symbol, which
2656 indicates to the C program that the strtold_l() routine is available.
2658 d_strtoll (d_strtoll.U):
2659 This variable conditionally defines the HAS_STRTOLL symbol, which
2660 indicates to the C program that the strtoll() routine is available.
2662 d_strtoq (d_strtoq.U):
2663 This variable conditionally defines the HAS_STRTOQ symbol, which
2664 indicates to the C program that the strtoq() routine is available.
2666 d_strtoul (d_strtoul.U):
2667 This variable conditionally defines the HAS_STRTOUL symbol, which
2668 indicates to the C program that the strtoul() routine is available
2669 to provide conversion of strings to unsigned long.
2671 d_strtoull (d_strtoull.U):
2672 This variable conditionally defines the HAS_STRTOULL symbol, which
2673 indicates to the C program that the strtoull() routine is available.
2675 d_strtouq (d_strtouq.U):
2676 This variable conditionally defines the HAS_STRTOUQ symbol, which
2677 indicates to the C program that the strtouq() routine is available.
2679 d_strxfrm (d_strxfrm.U):
2680 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2681 available to transform strings.
2683 d_suidsafe (d_dosuid.U):
2684 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2685 if setuid scripts can be secure. This test looks in /dev/fd/.
2687 d_symlink (d_symlink.U):
2688 This variable conditionally defines the HAS_SYMLINK symbol, which
2689 indicates to the C program that the symlink() routine is available
2690 to create symbolic links.
2692 d_syscall (d_syscall.U):
2693 This variable conditionally defines HAS_SYSCALL if syscall() is
2694 available call arbitrary system calls.
2696 d_syscallproto (d_syscallproto.U):
2697 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2698 which indicates to the C program that the system provides
2699 a prototype for the syscall() function. Otherwise, it is
2700 up to the program to supply one.
2702 d_sysconf (d_sysconf.U):
2703 This variable conditionally defines the HAS_SYSCONF symbol, which
2704 indicates to the C program that the sysconf() routine is available
2705 to determine system related limits and options.
2707 d_sysernlst (d_strerror.U):
2708 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2709 is available to translate error numbers to the symbolic name.
2711 d_syserrlst (d_strerror.U):
2712 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2713 available to translate error numbers to strings.
2715 d_system (d_system.U):
2716 This variable conditionally defines HAS_SYSTEM if system() is
2717 available to issue a shell command.
2719 d_tcgetpgrp (d_tcgtpgrp.U):
2720 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2721 indicates to the C program that the tcgetpgrp() routine is available.
2722 to get foreground process group ID.
2724 d_tcsetpgrp (d_tcstpgrp.U):
2725 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2726 indicates to the C program that the tcsetpgrp() routine is available
2727 to set foreground process group ID.
2729 d_telldir (d_readdir.U):
2730 This variable conditionally defines HAS_TELLDIR if telldir() is
2733 d_telldirproto (d_telldirproto.U):
2734 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2735 which indicates to the C program that the system provides
2736 a prototype for the telldir() function. Otherwise, it is
2737 up to the program to supply one.
2739 d_tgamma (d_tgamma.U):
2740 This variable conditionally defines the HAS_TGAMMA symbol, which
2741 indicates to the C program that the tgamma() routine is available
2742 for the gamma function. See also d_lgamma.
2744 d_thread_safe_nl_langinfo_l (d_nl_langinfo_l.U):
2745 This variable contains the eventual value of the
2746 HAS_THREAD_SAFE_NL_LANGINFO_L symbol, which indicates if the
2747 nl_langinfo_l() function exists and is thread-safe.
2750 This variable conditionally defines the HAS_TIME symbol, which indicates
2751 that the time() routine exists. The time() routine is normally
2752 provided on UNIX systems.
2754 d_timegm (d_timegm.U):
2755 This variable conditionally defines the HAS_TIMEGM symbol, which
2756 indicates to the C program that the timegm () routine is available.
2758 d_times (d_times.U):
2759 This variable conditionally defines the HAS_TIMES symbol, which indicates
2760 that the times() routine exists. The times() routine is normally
2761 provided on UNIX systems. You may have to include <sys/times.h>.
2763 d_tm_tm_gmtoff (i_time.U):
2764 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2765 indicates to the C program that the struct tm has the tm_gmtoff field.
2767 d_tm_tm_zone (i_time.U):
2768 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2769 indicates to the C program that the struct tm has the tm_zone field.
2771 d_tmpnam_r (d_tmpnam_r.U):
2772 This variable conditionally defines the HAS_TMPNAM_R symbol,
2773 which indicates to the C program that the tmpnam_r()
2774 routine is available.
2776 d_towlower (d_towlower.U):
2777 This variable conditionally defines the HAS_TOWLOWER symbol, which
2778 indicates to the C program that the towlower() routine is available.
2780 d_towupper (d_towupper.U):
2781 This variable conditionally defines the HAS_TOWUPPER symbol, which
2782 indicates to the C program that the towupper() routine is available.
2784 d_trunc (d_trunc.U):
2785 This variable conditionally defines the HAS_TRUNC symbol, which
2786 indicates to the C program that the trunc() routine is available
2787 to round doubles towards zero.
2789 d_truncate (d_truncate.U):
2790 This variable conditionally defines HAS_TRUNCATE if truncate() is
2791 available to truncate files.
2793 d_truncl (d_truncl.U):
2794 This variable conditionally defines the HAS_TRUNCL symbol, which
2795 indicates to the C program that the truncl() routine is available
2796 to round long doubles towards zero. If copysignl is also present,
2797 we can emulate modfl.
2799 d_ttyname_r (d_ttyname_r.U):
2800 This variable conditionally defines the HAS_TTYNAME_R symbol,
2801 which indicates to the C program that the ttyname_r()
2802 routine is available.
2804 d_tzname (d_tzname.U):
2805 This variable conditionally defines HAS_TZNAME if tzname[] is
2806 available to access timezone names.
2808 d_u32align (d_u32align.U):
2809 This variable tells whether you must access character data
2810 through U32-aligned pointers.
2812 d_ualarm (d_ualarm.U):
2813 This variable conditionally defines the HAS_UALARM symbol, which
2814 indicates to the C program that the ualarm() routine is available.
2816 d_umask (d_umask.U):
2817 This variable conditionally defines the HAS_UMASK symbol, which
2818 indicates to the C program that the umask() routine is available.
2819 to set and get the value of the file creation mask.
2821 d_uname (d_gethname.U):
2822 This variable conditionally defines the HAS_UNAME symbol, which
2823 indicates to the C program that the uname() routine may be
2824 used to derive the host name.
2826 d_union_semun (d_union_semun.U):
2827 This variable conditionally defines HAS_UNION_SEMUN if the
2828 union semun is defined by including <sys/sem.h>.
2830 d_unlinkat (d_fsat.U):
2831 This variable conditionally defines the HAS_UNLINKAT symbol, which
2832 indicates the POSIX unlinkat() function isavailable.
2834 d_unordered (d_unordered.U):
2835 This variable conditionally defines the HAS_UNORDERED symbol, which
2836 indicates to the C program that the unordered() routine is available.
2838 d_unsetenv (d_unsetenv.U):
2839 This variable conditionally defines the HAS_UNSETENV symbol, which
2840 indicates to the C program that the unsetenv () routine is available.
2842 d_uselocale (d_newlocale.U):
2843 This variable conditionally defines the HAS_USELOCALE symbol, which
2844 indicates to the C program that the uselocale() routine is available
2845 to set the current locale for the calling thread.
2847 d_usleep (d_usleep.U):
2848 This variable conditionally defines HAS_USLEEP if usleep() is
2849 available to do high granularity sleeps.
2851 d_usleepproto (d_usleepproto.U):
2852 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2853 which indicates to the C program that the system provides
2854 a prototype for the usleep() function. Otherwise, it is
2855 up to the program to supply one.
2857 d_ustat (d_ustat.U):
2858 This variable conditionally defines HAS_USTAT if ustat() is
2859 available to query file system statistics by dev_t.
2861 d_vendorarch (vendorarch.U):
2862 This variable conditionally defined PERL_VENDORARCH.
2864 d_vendorbin (vendorbin.U):
2865 This variable conditionally defines PERL_VENDORBIN.
2867 d_vendorlib (vendorlib.U):
2868 This variable conditionally defines PERL_VENDORLIB.
2870 d_vendorscript (vendorscript.U):
2871 This variable conditionally defines PERL_VENDORSCRIPT.
2873 d_vfork (d_vfork.U):
2874 This variable conditionally defines the HAS_VFORK symbol, which
2875 indicates the vfork() routine is available.
2877 d_void_closedir (d_closedir.U):
2878 This variable conditionally defines VOID_CLOSEDIR if closedir()
2879 does not return a value.
2881 d_voidsig (d_voidsig.U):
2882 This variable conditionally defines VOIDSIG if this system
2883 declares "void (*signal(...))()" in signal.h. The old way was to
2884 declare it as "int (*signal(...))()".
2886 d_voidtty (i_sysioctl.U):
2887 This variable conditionally defines USE_IOCNOTTY to indicate that the
2888 ioctl() call with TIOCNOTTY should be used to void tty association.
2889 Otherwise (on USG probably), it is enough to close the standard file
2890 descriptors and do a setpgrp().
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 default_inc_excludes_dot (defaultincdot.U):
2963 When defined, remove the legacy '.' from @INC
2965 direntrytype (i_dirent.U):
2966 This symbol is set to 'struct direct' or 'struct dirent' depending on
2967 whether dirent is available or not. You should use this pseudo type to
2968 portably declare your directory entries.
2971 This variable contains the extension that is to be used for the
2972 dynamically loaded modules that perl generates.
2975 This variable contains the name of the dynamic loading file that
2976 will be used with the package.
2978 doubleinfbytes (infnan.U):
2979 This variable contains comma-separated list of hexadecimal bytes
2980 for the double precision infinity.
2982 doublekind (longdblfio.U):
2983 This variable, if defined, encodes the type of a double:
2984 1 = IEEE 754 32-bit little endian,
2985 2 = IEEE 754 32-bit big endian,
2986 3 = IEEE 754 64-bit little endian,
2987 4 = IEEE 754 64-bit big endian,
2988 5 = IEEE 754 128-bit little endian,
2989 6 = IEEE 754 128-bit big endian,
2990 7 = IEEE 754 64-bit mixed endian le-be,
2991 8 = IEEE 754 64-bit mixed endian be-le,
2992 9 = VAX 32bit little endian F float format
2993 10 = VAX 64bit little endian D float format
2994 11 = VAX 64bit little endian G float format
2995 12 = IBM 32bit format
2996 13 = IBM 64bit format
2997 14 = Cray 64bit format
2998 -1 = unknown format.
3000 doublemantbits (mantbits.U):
3001 This symbol, if defined, tells how many mantissa bits
3002 there are in double precision floating point format.
3003 Note that this is usually DBL_MANT_DIG minus one, since
3004 with the standard IEEE 754 formats DBL_MANT_DIG includes
3005 the implicit bit which doesn't really exist.
3007 doublenanbytes (infnan.U):
3008 This variable contains comma-separated list of hexadecimal bytes
3009 for the double precision not-a-number.
3011 doublesize (doublesize.U):
3012 This variable contains the value of the DOUBLESIZE symbol, which
3013 indicates to the C program how many bytes there are in a double.
3015 drand01 (randfunc.U):
3016 Indicates the macro to be used to generate normalized
3017 random numbers. Uses randfunc, often divided by
3018 (double) (((unsigned long) 1 << randbits)) in order to
3019 normalize the result.
3020 In C programs, the macro 'Drand01' is mapped to drand01.
3022 drand48_r_proto (d_drand48_r.U):
3023 This variable encodes the prototype of drand48_r.
3024 It is zero if d_drand48_r is undef, and one of the
3025 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
3028 dtrace (usedtrace.U):
3029 This variable holds the location of the dtrace executable.
3031 dtraceobject (dtraceobject.U):
3032 Whether we need to build an object file with the dtrace tool.
3034 dtracexnolibs (dtraceobject.U):
3035 Whether dtrace accepts -xnolibs. If available we call dtrace -h
3036 and dtrace -G with -xnolibs to allow dtrace to run in a jail on
3039 dynamic_ext (Extensions.U):
3040 This variable holds a list of XS extension files we want to
3041 link dynamically into the package. It is used by Makefile.
3043 eagain (nblock_io.U):
3044 This variable bears the symbolic errno code set by read() when no
3045 data is present on the file and non-blocking I/O was enabled (otherwise,
3046 read() blocks naturally).
3049 This variable conditionally defines EBCDIC if this
3050 system uses EBCDIC encoding.
3053 This variable is used internally by Configure to determine the
3054 full pathname (if any) of the echo program. After Configure runs,
3055 the value is reset to a plain "echo" and is not useful.
3058 This variable is used internally by Configure to determine the
3059 full pathname (if any) of the egrep program. After Configure runs,
3060 the value is reset to a plain "egrep" and is not useful.
3063 This variable is defined but not used by Configure.
3064 The value is the empty string and is not useful.
3066 endgrent_r_proto (d_endgrent_r.U):
3067 This variable encodes the prototype of endgrent_r.
3068 It is zero if d_endgrent_r is undef, and one of the
3069 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
3072 endhostent_r_proto (d_endhostent_r.U):
3073 This variable encodes the prototype of endhostent_r.
3074 It is zero if d_endhostent_r is undef, and one of the
3075 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
3078 endnetent_r_proto (d_endnetent_r.U):
3079 This variable encodes the prototype of endnetent_r.
3080 It is zero if d_endnetent_r is undef, and one of the
3081 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
3084 endprotoent_r_proto (d_endprotoent_r.U):
3085 This variable encodes the prototype of endprotoent_r.
3086 It is zero if d_endprotoent_r is undef, and one of the
3087 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
3090 endpwent_r_proto (d_endpwent_r.U):
3091 This variable encodes the prototype of endpwent_r.
3092 It is zero if d_endpwent_r is undef, and one of the
3093 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
3096 endservent_r_proto (d_endservent_r.U):
3097 This variable encodes the prototype of endservent_r.
3098 It is zero if d_endservent_r is undef, and one of the
3099 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
3103 When running under Eunice this variable contains a command which will
3104 convert a shell script to the proper form of text file for it to be
3105 executable by the shell. On other systems it is a no-op.
3108 This is an old synonym for _exe.
3111 This variable is used internally by Configure to determine the
3112 full pathname (if any) of the expr program. After Configure runs,
3113 the value is reset to a plain "expr" and is not useful.
3115 extensions (Extensions.U):
3116 This variable holds a list of all extension files (both XS and
3117 non-xs) installed with the package. It is propagated to Config.pm
3118 and is typically used to test whether a particular extension
3122 ANSI C requires 'extern' where C++ requires 'extern "C"'. This
3123 variable can be used in Configure to do the right thing.
3126 This variable holds a list of extra modules to install.
3128 fflushall (fflushall.U):
3129 This symbol, if defined, tells that to flush
3130 all pending stdio output one must loop through all
3131 the stdio file handles stored in an array and fflush them.
3132 Note that if fflushNULL is defined, fflushall will not
3133 even be probed for and will be left undefined.
3135 fflushNULL (fflushall.U):
3136 This symbol, if defined, tells that fflush(NULL) correctly
3137 flushes all pending stdio output without side effects. In
3138 particular, on some platforms calling fflush(NULL) *still*
3139 corrupts STDIN if it is a pipe.
3142 This variable is defined but not used by Configure.
3143 The value is the empty string and is not useful.
3145 firstmakefile (Unix.U):
3146 This variable defines the first file searched by make. On unix,
3147 it is makefile (then Makefile). On case-insensitive systems,
3148 it might be something else. This is only used to deal with
3149 convoluted make depend tricks.
3152 This variable is defined but not used by Configure.
3153 The value is the empty string and is not useful.
3155 fpossize (fpossize.U):
3156 This variable contains the size of a fpostype in bytes.
3158 fpostype (fpostype.U):
3159 This variable defines Fpos_t to be something like fpos_t, long,
3160 uint, or whatever type is used to declare file positions in libc.
3162 freetype (mallocsrc.U):
3163 This variable contains the return type of free(). It is usually
3164 void, but occasionally int.
3167 This variable contains the command used by Configure
3168 to copy files from the target host. Useful and available
3169 only during Perl build.
3170 The string ':' if not cross-compiling.
3173 This variable contains the full pathname to 'ar', whether or
3174 not the user has specified 'portability'. This is only used
3178 This variable contains the full pathname to 'csh', whether or
3179 not the user has specified 'portability'. This is only used
3180 in the compiled C program, and we assume that all systems which
3181 can share this executable will have the same full pathname to
3184 full_sed (Loc_sed.U):
3185 This variable contains the full pathname to 'sed', whether or
3186 not the user has specified 'portability'. This is only used
3187 in the compiled C program, and we assume that all systems which
3188 can share this executable will have the same full pathname to
3191 gccansipedantic (gccvers.U):
3192 If GNU cc (gcc) is used, this variable will enable (if set) the
3193 -ansi and -pedantic ccflags for building core files (through
3194 cflags script). (See Porting/pumpkin.pod for full description).
3196 gccosandvers (gccvers.U):
3197 If GNU cc (gcc) is used, this variable holds the operating system
3198 and version used to compile gcc. It is set to '' if not gcc,
3199 or if nothing useful can be parsed as the os version.
3201 gccversion (gccvers.U):
3202 If GNU cc (gcc) is used, this variable holds '1' or '2' to
3203 indicate whether the compiler is version 1 or 2. This is used in
3204 setting some of the default cflags. It is set to '' if not gcc.
3206 getgrent_r_proto (d_getgrent_r.U):
3207 This variable encodes the prototype of getgrent_r.
3208 It is zero if d_getgrent_r is undef, and one of the
3209 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
3212 getgrgid_r_proto (d_getgrgid_r.U):
3213 This variable encodes the prototype of getgrgid_r.
3214 It is zero if d_getgrgid_r is undef, and one of the
3215 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
3218 getgrnam_r_proto (d_getgrnam_r.U):
3219 This variable encodes the prototype of getgrnam_r.
3220 It is zero if d_getgrnam_r is undef, and one of the
3221 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
3224 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
3225 This variable encodes the prototype of gethostbyaddr_r.
3226 It is zero if d_gethostbyaddr_r is undef, and one of the
3227 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
3230 gethostbyname_r_proto (d_gethostbyname_r.U):
3231 This variable encodes the prototype of gethostbyname_r.
3232 It is zero if d_gethostbyname_r is undef, and one of the
3233 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
3236 gethostent_r_proto (d_gethostent_r.U):
3237 This variable encodes the prototype of gethostent_r.
3238 It is zero if d_gethostent_r is undef, and one of the
3239 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
3242 getlogin_r_proto (d_getlogin_r.U):
3243 This variable encodes the prototype of getlogin_r.
3244 It is zero if d_getlogin_r is undef, and one of the
3245 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
3248 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
3249 This variable encodes the prototype of getnetbyaddr_r.
3250 It is zero if d_getnetbyaddr_r is undef, and one of the
3251 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
3254 getnetbyname_r_proto (d_getnetbyname_r.U):
3255 This variable encodes the prototype of getnetbyname_r.
3256 It is zero if d_getnetbyname_r is undef, and one of the
3257 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
3260 getnetent_r_proto (d_getnetent_r.U):
3261 This variable encodes the prototype of getnetent_r.
3262 It is zero if d_getnetent_r is undef, and one of the
3263 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
3266 getprotobyname_r_proto (d_getprotobyname_r.U):
3267 This variable encodes the prototype of getprotobyname_r.
3268 It is zero if d_getprotobyname_r is undef, and one of the
3269 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
3272 getprotobynumber_r_proto (d_getprotobynumber_r.U):
3273 This variable encodes the prototype of getprotobynumber_r.
3274 It is zero if d_getprotobynumber_r is undef, and one of the
3275 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
3278 getprotoent_r_proto (d_getprotoent_r.U):
3279 This variable encodes the prototype of getprotoent_r.
3280 It is zero if d_getprotoent_r is undef, and one of the
3281 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
3284 getpwent_r_proto (d_getpwent_r.U):
3285 This variable encodes the prototype of getpwent_r.
3286 It is zero if d_getpwent_r is undef, and one of the
3287 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
3290 getpwnam_r_proto (d_getpwnam_r.U):
3291 This variable encodes the prototype of getpwnam_r.
3292 It is zero if d_getpwnam_r is undef, and one of the
3293 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
3296 getpwuid_r_proto (d_getpwuid_r.U):
3297 This variable encodes the prototype of getpwuid_r.
3298 It is zero if d_getpwuid_r is undef, and one of the
3299 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
3302 getservbyname_r_proto (d_getservbyname_r.U):
3303 This variable encodes the prototype of getservbyname_r.
3304 It is zero if d_getservbyname_r is undef, and one of the
3305 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
3308 getservbyport_r_proto (d_getservbyport_r.U):
3309 This variable encodes the prototype of getservbyport_r.
3310 It is zero if d_getservbyport_r is undef, and one of the
3311 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
3314 getservent_r_proto (d_getservent_r.U):
3315 This variable encodes the prototype of getservent_r.
3316 It is zero if d_getservent_r is undef, and one of the
3317 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
3320 getspnam_r_proto (d_getspnam_r.U):
3321 This variable encodes the prototype of getspnam_r.
3322 It is zero if d_getspnam_r is undef, and one of the
3323 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
3327 This variable contains the format string used for printing a Gid_t.
3329 gidsign (gidsign.U):
3330 This variable contains the signedness of a gidtype.
3331 1 for unsigned, -1 for signed.
3333 gidsize (gidsize.U):
3334 This variable contains the size of a gidtype in bytes.
3336 gidtype (gidtype.U):
3337 This variable defines Gid_t to be something like gid_t, int,
3338 ushort, or whatever type is used to declare the return type
3339 of getgid(). Typically, it is the type of group ids in the kernel.
3342 This variable holds the general path (space-separated) used to
3343 find libraries. It may contain directories that do not exist on
3344 this platform, libpth is the cleaned-up version.
3347 This variable is used internally by Configure to determine the
3348 full pathname (if any) of the gmake program. After Configure runs,
3349 the value is reset to a plain "gmake" and is not useful.
3351 gmtime_r_proto (d_gmtime_r.U):
3352 This variable encodes the prototype of gmtime_r.
3353 It is zero if d_gmtime_r is undef, and one of the
3354 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
3357 gnulibc_version (d_gnulibc.U):
3358 This variable contains the version number of the GNU C library.
3359 It is usually something like '2.2.5'. It is a plain '' if this
3360 is not the GNU C library, or if the version is unknown.
3363 This variable is used internally by Configure to determine the
3364 full pathname (if any) of the grep program. After Configure runs,
3365 the value is reset to a plain "grep" and is not useful.
3368 This variable contains a command that produces the text of the
3369 /etc/group file. This is normally "cat /etc/group", but can be
3370 "ypcat group" when NIS is used.
3371 On some systems, such as os390, there may be no equivalent
3372 command, in which case this variable is unset.
3374 groupstype (groupstype.U):
3375 This variable defines Groups_t to be something like gid_t, int,
3376 ushort, or whatever type is used for the second argument to
3377 getgroups() and setgroups(). Usually, this is the same as
3378 gidtype (gid_t), but sometimes it isn't.
3381 This variable is used internally by Configure to determine the
3382 full pathname (if any) of the gzip program. After Configure runs,
3383 the value is reset to a plain "gzip" and is not useful.
3385 h_fcntl (h_fcntl.U):
3386 This is variable gets set in various places to tell i_fcntl that
3387 <fcntl.h> should be included.
3389 h_sysfile (h_sysfile.U):
3390 This is variable gets set in various places to tell i_sys_file that
3391 <sys/file.h> should be included.
3394 Gives the type of hints used for previous answers. May be one of
3395 "default", "recommended" or "previous".
3398 This variable contains a command that produces the text of the
3399 /etc/hosts file. This is normally "cat /etc/hosts", but can be
3400 "ypcat hosts" when NIS is used.
3401 On some systems, such as os390, there may be no equivalent
3402 command, in which case this variable is unset.
3404 hostgenerate (Cross.U):
3405 This variable contains the path to a generate_uudmap binary that
3406 can be run on the host OS when cross-compiling. Useful and
3407 available only during Perl build.
3408 Empty string '' if not cross-compiling.
3410 hostosname (Cross.U):
3411 This variable contains the original value of '$^O' for hostperl
3412 when cross-compiling. This is useful to pick the proper tools
3413 when running build code in the host.
3414 Empty string '' if not cross-compiling.
3417 This variable contains the path to a miniperl binary that can be
3418 run on the host OS when cross-compiling. Useful and available only
3420 Empty string '' if not cross-compiling.
3422 html1dir (html1dir.U):
3423 This variable contains the name of the directory in which html
3424 source pages are to be put. This directory is for pages
3425 that describe whole programs, not libraries or modules. It
3426 is intended to correspond roughly to section 1 of the Unix
3429 html1direxp (html1dir.U):
3430 This variable is the same as the html1dir variable, but is filename
3431 expanded at configuration time, for convenient use in makefiles.
3433 html3dir (html3dir.U):
3434 This variable contains the name of the directory in which html
3435 source pages are to be put. This directory is for pages
3436 that describe libraries or modules. It is intended to
3437 correspond roughly to section 3 of the Unix manuals.
3439 html3direxp (html3dir.U):
3440 This variable is the same as the html3dir variable, but is filename
3441 expanded at configuration time, for convenient use in makefiles.
3444 This variable is the size of an I16 in bytes.
3447 This variable contains the C type used for Perl's I16.
3450 This variable is the size of an I32 in bytes.
3453 This variable contains the C type used for Perl's I32.
3456 This variable is the size of an I64 in bytes.
3459 This variable contains the C type used for Perl's I64.
3462 This variable is the size of an I8 in bytes.
3465 This variable contains the C type used for Perl's I8.
3467 i_arpainet (i_arpainet.U):
3468 This variable conditionally defines the I_ARPA_INET symbol,
3469 and indicates whether a C program should include <arpa/inet.h>.
3472 This variable conditionally defines the I_BFD symbol, and
3473 indicates whether a C program can include <bfd.h>.
3475 i_bsdioctl (i_sysioctl.U):
3476 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
3477 indicates to the C program that <sys/bsdioctl.h> exists and should
3480 i_crypt (i_crypt.U):
3481 This variable conditionally defines the I_CRYPT symbol, and indicates
3482 whether a C program should include <crypt.h>.
3485 This variable conditionally defines the I_DB symbol, and indicates
3486 whether a C program may include Berkeley's DB include file <db.h>.
3489 This variable conditionally defines the I_DBM symbol, which
3490 indicates to the C program that <dbm.h> exists and should
3493 i_dirent (i_dirent.U):
3494 This variable conditionally defines I_DIRENT, which indicates
3495 to the C program that it should include <dirent.h>.
3497 i_dlfcn (i_dlfcn.U):
3498 This variable conditionally defines the I_DLFCN symbol, which
3499 indicates to the C program that <dlfcn.h> exists and should
3502 i_execinfo (i_execinfo.U):
3503 This variable conditionally defines the I_EXECINFO symbol, and indicates
3504 whether a C program may include <execinfo.h>, for backtrace() support.
3506 i_fcntl (i_fcntl.U):
3507 This variable controls the value of I_FCNTL (which tells
3508 the C program to include <fcntl.h>).
3511 This variable conditionally defines the I_FENV symbol, which
3512 indicates to the C program that <fenv.h> exists and should
3516 This variable conditionally defines the I_FP symbol, and indicates
3517 whether a C program should include <fp.h>.
3519 i_fp_class (i_fp_class.U):
3520 This variable conditionally defines the I_FP_CLASS symbol, and indicates
3521 whether a C program should include <fp_class.h>.
3524 This variable conditionally defines the I_GDBM symbol, which
3525 indicates to the C program that <gdbm.h> exists and should
3528 i_gdbm_ndbm (i_ndbm.U):
3529 This variable conditionally defines the I_GDBM_NDBM symbol, which
3530 indicates to the C program that <gdbm-ndbm.h> exists and should
3531 be included. This is the location of the ndbm.h compatibility file
3534 i_gdbmndbm (i_ndbm.U):
3535 This variable conditionally defines the I_GDBMNDBM symbol, which
3536 indicates to the C program that <gdbm/ndbm.h> exists and should
3537 be included. This was the location of the ndbm.h compatibility file
3541 This variable conditionally defines the I_GRP symbol, and indicates
3542 whether a C program should include <grp.h>.
3544 i_ieeefp (i_ieeefp.U):
3545 This variable conditionally defines the I_IEEEFP symbol, and indicates
3546 whether a C program should include <ieeefp.h>.
3548 i_inttypes (i_inttypes.U):
3549 This variable conditionally defines the I_INTTYPES symbol,
3550 and indicates whether a C program should include <inttypes.h>.
3552 i_langinfo (i_langinfo.U):
3553 This variable conditionally defines the I_LANGINFO symbol,
3554 and indicates whether a C program should include <langinfo.h>.
3556 i_libutil (i_libutil.U):
3557 This variable conditionally defines the I_LIBUTIL symbol, and indicates
3558 whether a C program should include <libutil.h>.
3560 i_locale (i_locale.U):
3561 This variable conditionally defines the I_LOCALE symbol,
3562 and indicates whether a C program should include <locale.h>.
3564 i_machcthr (i_machcthr.U):
3565 This variable conditionally defines the I_MACH_CTHREADS symbol,
3566 and indicates whether a C program should include <mach/cthreads.h>.
3568 i_malloc (i_malloc.U):
3569 This variable conditionally defines the I_MALLOC symbol, and indicates
3570 whether a C program should include <malloc.h>.
3572 i_mallocmalloc (i_mallocmalloc.U):
3573 This variable conditionally defines the I_MALLOCMALLOC symbol,
3574 and indicates whether a C program should include <malloc/malloc.h>.
3576 i_mntent (i_mntent.U):
3577 This variable conditionally defines the I_MNTENT symbol, and indicates
3578 whether a C program should include <mntent.h>.
3581 This variable conditionally defines the I_NDBM symbol, which
3582 indicates to the C program that <ndbm.h> exists and should
3585 i_netdb (i_netdb.U):
3586 This variable conditionally defines the I_NETDB symbol, and indicates
3587 whether a C program should include <netdb.h>.
3589 i_neterrno (i_neterrno.U):
3590 This variable conditionally defines the I_NET_ERRNO symbol, which
3591 indicates to the C program that <net/errno.h> exists and should
3594 i_netinettcp (i_netinettcp.U):
3595 This variable conditionally defines the I_NETINET_TCP symbol,
3596 and indicates whether a C program should include <netinet/tcp.h>.
3599 This variable conditionally defines I_NETINET_IN, which indicates
3600 to the C program that it should include <netinet/in.h>. Otherwise,
3601 you may try <sys/in.h>.
3604 This variable conditionally defines the I_POLL symbol, and indicates
3605 whether a C program should include <poll.h>.
3608 This variable conditionally defines the I_PROT symbol, and indicates
3609 whether a C program should include <prot.h>.
3611 i_pthread (i_pthread.U):
3612 This variable conditionally defines the I_PTHREAD symbol,
3613 and indicates whether a C program should include <pthread.h>.
3616 This variable conditionally defines I_PWD, which indicates
3617 to the C program that it should include <pwd.h>.
3619 i_quadmath (i_quadmath.U):
3620 This variable conditionally defines I_QUADMATH, which indicates
3621 to the C program that it should include <quadmath.h>.
3623 i_rpcsvcdbm (i_dbm.U):
3624 This variable conditionally defines the I_RPCSVC_DBM symbol, which
3625 indicates to the C program that <rpcsvc/dbm.h> exists and should
3626 be included. Some System V systems might need this instead of <dbm.h>.
3628 i_sgtty (i_termio.U):
3629 This variable conditionally defines the I_SGTTY symbol, which
3630 indicates to the C program that it should include <sgtty.h> rather
3633 i_shadow (i_shadow.U):
3634 This variable conditionally defines the I_SHADOW symbol, and indicates
3635 whether a C program should include <shadow.h>.
3637 i_socks (i_socks.U):
3638 This variable conditionally defines the I_SOCKS symbol, and indicates
3639 whether a C program should include <socks.h>.
3641 i_stdbool (i_stdbool.U):
3642 This variable conditionally defines the I_STDBOOL symbol, which
3643 indicates to the C program that <stdbool.h> exists and should
3646 i_stdint (i_stdint.U):
3647 This variable conditionally defines the I_STDINT symbol, which
3648 indicates to the C program that <stdint.h> exists and should
3651 i_stdlib (i_stdlib.U):
3652 This variable unconditionally defines the I_STDLIB symbol.
3654 i_sunmath (i_sunmath.U):
3655 This variable conditionally defines the I_SUNMATH symbol, and indicates
3656 whether a C program should include <sunmath.h>.
3658 i_sysaccess (i_sysaccess.U):
3659 This variable conditionally defines the I_SYS_ACCESS symbol,
3660 and indicates whether a C program should include <sys/access.h>.
3662 i_sysdir (i_sysdir.U):
3663 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3664 whether a C program should include <sys/dir.h>.
3666 i_sysfile (i_sysfile.U):
3667 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3668 whether a C program should include <sys/file.h> to get R_OK and friends.
3670 i_sysfilio (i_sysioctl.U):
3671 This variable conditionally defines the I_SYS_FILIO symbol, which
3672 indicates to the C program that <sys/filio.h> exists and should
3673 be included in preference to <sys/ioctl.h>.
3676 This variable conditionally defines I_SYS_IN, which indicates
3677 to the C program that it should include <sys/in.h> instead of
3680 i_sysioctl (i_sysioctl.U):
3681 This variable conditionally defines the I_SYS_IOCTL symbol, which
3682 indicates to the C program that <sys/ioctl.h> exists and should
3685 i_syslog (i_syslog.U):
3686 This variable conditionally defines the I_SYSLOG symbol,
3687 and indicates whether a C program should include <syslog.h>.
3689 i_sysmman (i_sysmman.U):
3690 This variable conditionally defines the I_SYS_MMAN symbol,
3691 and indicates whether a C program should include <sys/mman.h>.
3693 i_sysmode (i_sysmode.U):
3694 This variable conditionally defines the I_SYSMODE symbol,
3695 and indicates whether a C program should include <sys/mode.h>.
3697 i_sysmount (i_sysmount.U):
3698 This variable conditionally defines the I_SYSMOUNT symbol,
3699 and indicates whether a C program should include <sys/mount.h>.
3701 i_sysndir (i_sysndir.U):
3702 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3703 whether a C program should include <sys/ndir.h>.
3705 i_sysparam (i_sysparam.U):
3706 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3707 whether a C program should include <sys/param.h>.
3709 i_syspoll (i_syspoll.U):
3710 This variable conditionally defines the I_SYS_POLL symbol, which
3711 indicates to the C program that it should include <sys/poll.h>.
3713 i_sysresrc (i_sysresrc.U):
3714 This variable conditionally defines the I_SYS_RESOURCE symbol,
3715 and indicates whether a C program should include <sys/resource.h>.
3717 i_syssecrt (i_syssecrt.U):
3718 This variable conditionally defines the I_SYS_SECURITY symbol,
3719 and indicates whether a C program should include <sys/security.h>.
3721 i_sysselct (i_sysselct.U):
3722 This variable conditionally defines I_SYS_SELECT, which indicates
3723 to the C program that it should include <sys/select.h> in order to
3724 get the definition of struct timeval.
3726 i_syssockio (i_sysioctl.U):
3727 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3728 C program that socket ioctl codes may be found in <sys/sockio.h>
3729 instead of <sys/ioctl.h>.
3731 i_sysstat (i_sysstat.U):
3732 This variable conditionally defines the I_SYS_STAT symbol,
3733 and indicates whether a C program should include <sys/stat.h>.
3735 i_sysstatfs (i_sysstatfs.U):
3736 This variable conditionally defines the I_SYSSTATFS symbol,
3737 and indicates whether a C program should include <sys/statfs.h>.
3739 i_sysstatvfs (i_sysstatvfs.U):
3740 This variable conditionally defines the I_SYSSTATVFS symbol,
3741 and indicates whether a C program should include <sys/statvfs.h>.
3743 i_systime (i_time.U):
3744 This variable conditionally defines I_SYS_TIME, which indicates
3745 to the C program that it should include <sys/time.h>.
3747 i_systimek (i_time.U):
3748 This variable conditionally defines I_SYS_TIME_KERNEL, which
3749 indicates to the C program that it should include <sys/time.h>
3750 with KERNEL defined.
3752 i_systimes (i_systimes.U):
3753 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3754 whether a C program should include <sys/times.h>.
3756 i_systypes (i_systypes.U):
3757 This variable conditionally defines the I_SYS_TYPES symbol,
3758 and indicates whether a C program should include <sys/types.h>.
3760 i_sysuio (i_sysuio.U):
3761 This variable conditionally defines the I_SYSUIO symbol, and indicates
3762 whether a C program should include <sys/uio.h>.
3764 i_sysun (i_sysun.U):
3765 This variable conditionally defines I_SYS_UN, which indicates
3766 to the C program that it should include <sys/un.h> to get UNIX
3767 domain socket definitions.
3769 i_sysutsname (i_sysutsname.U):
3770 This variable conditionally defines the I_SYSUTSNAME symbol,
3771 and indicates whether a C program should include <sys/utsname.h>.
3773 i_sysvfs (i_sysvfs.U):
3774 This variable conditionally defines the I_SYSVFS symbol,
3775 and indicates whether a C program should include <sys/vfs.h>.
3777 i_syswait (i_syswait.U):
3778 This variable conditionally defines I_SYS_WAIT, which indicates
3779 to the C program that it should include <sys/wait.h>.
3781 i_termio (i_termio.U):
3782 This variable conditionally defines the I_TERMIO symbol, which
3783 indicates to the C program that it should include <termio.h> rather
3786 i_termios (i_termio.U):
3787 This variable conditionally defines the I_TERMIOS symbol, which
3788 indicates to the C program that the POSIX <termios.h> file is
3792 This variable unconditionally defines I_TIME, which indicates
3793 to the C program that it should include <time.h>.
3795 i_unistd (i_unistd.U):
3796 This variable conditionally defines the I_UNISTD symbol, and indicates
3797 whether a C program should include <unistd.h>.
3799 i_ustat (i_ustat.U):
3800 This variable conditionally defines the I_USTAT symbol, and indicates
3801 whether a C program should include <ustat.h>.
3803 i_utime (i_utime.U):
3804 This variable conditionally defines the I_UTIME symbol, and indicates
3805 whether a C program should include <utime.h>.
3807 i_vfork (i_vfork.U):
3808 This variable conditionally defines the I_VFORK symbol, and indicates
3809 whether a C program should include vfork.h.
3811 i_wchar (i_wchar.U):
3812 This variable conditionally defines the I_WCHAR symbol,
3813 that indicates whether a C program may include <wchar.h>.
3815 i_wctype (i_wctype.U):
3816 This variable conditionally defines the I_WCTYPE symbol,
3817 that indicates whether a C program may include <wctype.h>.
3819 i_xlocale (d_newlocale.U):
3820 This symbol, if defined, indicates to the C program that it should
3821 include <xlocale.h> to get uselocale() and its friends
3823 ignore_versioned_solibs (libs.U):
3824 This variable should be non-empty if non-versioned shared
3825 libraries (libfoo.so.x.y) are to be ignored (because they
3826 cannot be linked against).
3828 inc_version_list (inc_version_list.U):
3829 This variable specifies the list of subdirectories in over
3830 which perl.c:incpush() and lib/lib.pm will automatically
3831 search when adding directories to @INC. The elements in
3832 the list are separated by spaces. This is only useful
3833 if you have a perl library directory tree structured like the
3834 default one. See INSTALL for how this works. The versioned
3835 site_perl directory was introduced in 5.005, so that is the
3836 lowest possible value.
3838 This list includes architecture-dependent directories back to
3839 version $api_versionstring (e.g. 5.5.640) and
3840 architecture-independent directories all the way back to
3843 inc_version_list_init (inc_version_list.U):
3844 This variable holds the same list as inc_version_list, but
3845 each item is enclosed in double quotes and separated by commas,
3846 suitable for use in the PERL_INC_VERSION_LIST initialization.
3849 This variable must precede the normal include path to get the
3850 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3851 Value can be "" or "/bsd43" on mips.
3854 This variable must precede the normal include path to get the
3855 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3856 Value can be "" or "/bsd43" on mips.
3859 This variable is defined but not used by Configure.
3860 The value is the empty string and is not useful.
3862 initialinstalllocation (bin.U):
3863 When userelocatableinc is true, this variable holds the location
3864 that make install should copy the perl binary to, with all the
3865 run-time relocatable paths calculated from this at install time.
3866 When used, it is initialized to the original value of binexp, and
3867 then binexp is set to '.../', as the other binaries are found
3868 relative to the perl binary.
3870 installarchlib (archlib.U):
3871 This variable is really the same as archlibexp but may differ on
3872 those systems using AFS. For extra portability, only this variable
3873 should be used in makefiles.
3876 This variable is the same as binexp unless AFS is running in which case
3877 the user is explicitly prompted for it. This variable should always
3878 be used in your makefiles for maximum portability.
3880 installhtml1dir (html1dir.U):
3881 This variable is really the same as html1direxp, unless you are
3882 using a different installprefix. For extra portability, you
3883 should only use this variable within your makefiles.
3885 installhtml3dir (html3dir.U):
3886 This variable is really the same as html3direxp, unless you are
3887 using a different installprefix. For extra portability, you
3888 should only use this variable within your makefiles.
3890 installman1dir (man1dir.U):
3891 This variable is really the same as man1direxp, unless you are using
3892 AFS in which case it points to the read/write location whereas
3893 man1direxp only points to the read-only access location. For extra
3894 portability, you should only use this variable within your makefiles.
3896 installman3dir (man3dir.U):
3897 This variable is really the same as man3direxp, unless you are using
3898 AFS in which case it points to the read/write location whereas
3899 man3direxp only points to the read-only access location. For extra
3900 portability, you should only use this variable within your makefiles.
3902 installprefix (installprefix.U):
3903 This variable holds the name of the directory below which
3904 "make install" will install the package. For most users, this
3905 is the same as prefix. However, it is useful for
3906 installing the software into a different (usually temporary)
3907 location after which it can be bundled up and moved somehow
3908 to the final location specified by prefix.
3910 installprefixexp (installprefix.U):
3911 This variable holds the full absolute path of installprefix
3912 with all ~-expansion done.
3914 installprivlib (privlib.U):
3915 This variable is really the same as privlibexp but may differ on
3916 those systems using AFS. For extra portability, only this variable
3917 should be used in makefiles.
3919 installscript (scriptdir.U):
3920 This variable is usually the same as scriptdirexp, unless you are on
3921 a system running AFS, in which case they may differ slightly. You
3922 should always use this variable within your makefiles for portability.
3924 installsitearch (sitearch.U):
3925 This variable is really the same as sitearchexp but may differ on
3926 those systems using AFS. For extra portability, only this variable
3927 should be used in makefiles.
3929 installsitebin (sitebin.U):
3930 This variable is usually the same as sitebinexp, unless you are on
3931 a system running AFS, in which case they may differ slightly. You
3932 should always use this variable within your makefiles for portability.
3934 installsitehtml1dir (sitehtml1dir.U):
3935 This variable is really the same as sitehtml1direxp, unless you are using
3936 AFS in which case it points to the read/write location whereas
3937 html1direxp only points to the read-only access location. For extra
3938 portability, you should only use this variable within your makefiles.
3940 installsitehtml3dir (sitehtml3dir.U):
3941 This variable is really the same as sitehtml3direxp, unless you are using
3942 AFS in which case it points to the read/write location whereas
3943 html3direxp only points to the read-only access location. For extra
3944 portability, you should only use this variable within your makefiles.
3946 installsitelib (sitelib.U):
3947 This variable is really the same as sitelibexp but may differ on
3948 those systems using AFS. For extra portability, only this variable
3949 should be used in makefiles.
3951 installsiteman1dir (siteman1dir.U):
3952 This variable is really the same as siteman1direxp, unless you are using
3953 AFS in which case it points to the read/write location whereas
3954 man1direxp only points to the read-only access location. For extra
3955 portability, you should only use this variable within your makefiles.
3957 installsiteman3dir (siteman3dir.U):
3958 This variable is really the same as siteman3direxp, unless you are using
3959 AFS in which case it points to the read/write location whereas
3960 man3direxp only points to the read-only access location. For extra
3961 portability, you should only use this variable within your makefiles.
3963 installsitescript (sitescript.U):
3964 This variable is usually the same as sitescriptexp, unless you are on
3965 a system running AFS, in which case they may differ slightly. You
3966 should always use this variable within your makefiles for portability.
3968 installstyle (installstyle.U):
3969 This variable describes the "style" of the perl installation.
3970 This is intended to be useful for tools that need to
3971 manipulate entire perl distributions. Perl itself doesn't use
3972 this to find its libraries -- the library directories are
3973 stored directly in Config.pm. Currently, there are only two
3974 styles: "lib" and "lib/perl5". The default library locations
3975 (e.g. privlib, sitelib) are either $prefix/lib or
3976 $prefix/lib/perl5. The former is useful if $prefix is a
3977 directory dedicated to perl (e.g. /opt/perl), while the latter
3978 is useful if $prefix is shared by many packages, e.g. if
3981 Unfortunately, while this "style" variable is used to set
3982 defaults for all three directory hierarchies (core, vendor, and
3983 site), there is no guarantee that the same style is actually
3984 appropriate for all those directories. For example, $prefix
3985 might be /opt/perl, but $siteprefix might be /usr/local.
3986 (Perhaps, in retrospect, the "lib" style should never have been
3987 supported, but it did seem like a nice idea at the time.)
3989 The situation is even less clear for tools such as MakeMaker
3990 that can be used to install additional modules into
3991 non-standard places. For example, if a user intends to install
3992 a module into a private directory (perhaps by setting PREFIX on
3993 the Makefile.PL command line), then there is no reason to
3994 assume that the Configure-time $installstyle setting will be
3995 relevant for that PREFIX.
3997 This may later be extended to include other information, so
3998 be careful with pattern-matching on the results.
4000 For compatibility with perl5.005 and earlier, the default
4001 setting is based on whether or not $prefix contains the string
4004 installusrbinperl (instubperl.U):
4005 This variable tells whether Perl should be installed also as
4006 /usr/bin/perl in addition to
4009 installvendorarch (vendorarch.U):
4010 This variable is really the same as vendorarchexp but may differ on
4011 those systems using AFS. For extra portability, only this variable
4012 should be used in makefiles.
4014 installvendorbin (vendorbin.U):
4015 This variable is really the same as vendorbinexp but may differ on
4016 those systems using AFS. For extra portability, only this variable
4017 should be used in makefiles.
4019 installvendorhtml1dir (vendorhtml1dir.U):
4020 This variable is really the same as vendorhtml1direxp but may differ on
4021 those systems using AFS. For extra portability, only this variable
4022 should be used in makefiles.
4024 installvendorhtml3dir (vendorhtml3dir.U):
4025 This variable is really the same as vendorhtml3direxp but may differ on
4026 those systems using AFS. For extra portability, only this variable
4027 should be used in makefiles.
4029 installvendorlib (vendorlib.U):
4030 This variable is really the same as vendorlibexp but may differ on
4031 those systems using AFS. For extra portability, only this variable
4032 should be used in makefiles.
4034 installvendorman1dir (vendorman1dir.U):
4035 This variable is really the same as vendorman1direxp but may differ on
4036 those systems using AFS. For extra portability, only this variable
4037 should be used in makefiles.
4039 installvendorman3dir (vendorman3dir.U):
4040 This variable is really the same as vendorman3direxp but may differ on
4041 those systems using AFS. For extra portability, only this variable
4042 should be used in makefiles.
4044 installvendorscript (vendorscript.U):
4045 This variable is really the same as vendorscriptexp but may differ on
4046 those systems using AFS. For extra portability, only this variable
4047 should be used in makefiles.
4049 intsize (intsize.U):
4050 This variable contains the value of the INTSIZE symbol, which
4051 indicates to the C program how many bytes there are in an int.
4053 issymlink (issymlink.U):
4054 This variable holds the test command to test for a symbolic link
4055 (if they are supported). Typical values include 'test -h' and
4058 ivdformat (perlxvf.U):
4059 This variable contains the format string used for printing
4060 a Perl IV as a signed decimal integer.
4063 This variable is the size of an IV in bytes.
4066 This variable contains the C type used for Perl's IV.
4068 known_extensions (Extensions.U):
4069 This variable holds a list of all extensions (both XS and non-xs)
4070 included in the package source distribution. This information is
4071 only really of use during the Perl build, as the list makes no
4072 distinction between extensions which were build and installed, and
4073 those which where not. See "extensions" for the list of extensions
4074 actually built and available.
4077 This variable is defined but not used by Configure.
4078 The value is the empty string and is not useful.
4081 This variable indicates the program to be used to link
4082 libraries for dynamic loading. On some systems, it is 'ld'.
4083 On ELF systems, it should be $cc. Mostly, we'll try to respect
4084 the hint file setting.
4086 ld_can_script (dlsrc.U):
4087 This variable shows if the loader accepts scripts in the form of
4088 -Wl,--version-script=ld.script. This is currently only supported
4089 for GNU ld on ELF in dynamic loading builds.
4091 lddlflags (dlsrc.U):
4092 This variable contains any special flags that might need to be
4093 passed to $ld to create a shared library suitable for dynamic
4094 loading. It is up to the makefile to use it. For hpux, it
4095 should be '-b'. For sunos 4.1, it is empty.
4097 ldflags (ccflags.U):
4098 This variable contains any additional C loader flags desired by
4099 the user. It is up to the Makefile to use this.
4101 ldflags_uselargefiles (uselfs.U):
4102 This variable contains the loader flags needed by large file builds
4103 and added to ldflags by hints files.
4105 ldlibpthname (libperl.U):
4106 This variable holds the name of the shared library
4107 search path, often LD_LIBRARY_PATH. To get an empty
4108 string, the hints file must set this to 'none'.
4111 This variable is used internally by Configure to determine the
4112 full pathname (if any) of the less program. After Configure runs,
4113 the value is reset to a plain "less" and is not useful.
4116 This is an old synonym for _a.
4119 This variable contains the location of the C library.
4121 libperl (libperl.U):
4122 The perl executable is obtained by linking perlmain.c with
4123 libperl, any static extensions (usually just DynaLoader),
4124 and any other libraries needed on this system. libperl
4125 is usually libperl.a, but can also be libperl.so.xxx if
4126 the user wishes to build a perl executable with a shared
4130 This variable holds the general path (space-separated) used to find
4131 libraries. It is intended to be used by other units.
4134 This variable holds the additional libraries we want to use.
4135 It is up to the Makefile to deal with it. The list can be empty.
4138 This variable holds the directory names aka dirnames of the libraries
4139 we found and accepted, duplicates are removed.
4142 This variable holds the filenames aka basenames of the libraries
4143 we found and accepted.
4146 This variable holds the full pathnames of the libraries
4147 we found and accepted.
4150 This variable holds the directory names probed for libraries.
4152 libswanted (Myinit.U):
4153 This variable holds a list of all the libraries we want to
4154 search. The order is chosen to pick up the c library
4155 ahead of ucb or bsd libraries for SVR4.
4157 libswanted_uselargefiles (uselfs.U):
4158 This variable contains the libraries needed by large file builds
4159 and added to ldflags by hints files. It is a space separated list
4160 of the library names without the "lib" prefix or any suffix, just
4164 This variable is defined but not used by Configure.
4165 The value is the empty string and is not useful.
4168 This variable is defined but not used by Configure.
4169 The value is the empty string and is not useful.
4171 lkflags (ccflags.U):
4172 This variable contains any additional C partial linker flags desired by
4173 the user. It is up to the Makefile to use this.
4176 This variable is used internally by Configure to determine the
4177 full pathname (if any) of the ln program. After Configure runs,
4178 the value is reset to a plain "ln" and is not useful.
4181 This variable holds the name of the command to make
4182 symbolic links (if they are supported). It can be used
4183 in the Makefile. It is either 'ln -s' or 'ln'
4185 localtime_r_proto (d_localtime_r.U):
4186 This variable encodes the prototype of localtime_r.
4187 It is zero if d_localtime_r is undef, and one of the
4188 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
4191 locincpth (ccflags.U):
4192 This variable contains a list of additional directories to be
4193 searched by the compiler. The appropriate '-I' directives will
4194 be added to ccflags. This is intended to simplify setting
4195 local directories from the Configure command line.
4196 It's not much, but it parallels the loclibpth stuff in libpth.U.
4198 loclibpth (libpth.U):
4199 This variable holds the paths (space-separated) used to find local
4200 libraries. It is prepended to libpth, and is intended to be easily
4201 set from the command line.
4203 longdblinfbytes (infnan.U):
4204 This variable contains comma-separated list of hexadecimal bytes
4205 for the long double precision infinity.
4207 longdblkind (d_longdbl.U):
4208 This variable, if defined, encodes the type of a long double:
4210 1 = IEEE 754 128-bit little endian,
4211 2 = IEEE 754 128-bit big endian,
4212 3 = x86 80-bit little endian,
4213 4 = x86 80-bit big endian,
4214 5 = double-double 128-bit little endian,
4215 6 = double-double 128-bit big endian,
4216 7 = 128-bit mixed-endian double-double (64-bit LEs in BE),
4217 8 = 128-bit mixed-endian double-double (64-bit BEs in LE),
4218 9 = 128-bit PDP-style mixed-endian long doubles,
4219 -1 = unknown format.
4221 longdblmantbits (mantbits.U):
4222 This symbol, if defined, tells how many mantissa bits
4223 there are in long double precision floating point format.
4224 Note that this can be LDBL_MANT_DIG minus one,
4225 since LDBL_MANT_DIG can include the IEEE 754 implicit bit.
4226 The common x86-style 80-bit long double does not have
4229 longdblnanbytes (infnan.U):
4230 This variable contains comma-separated list of hexadecimal bytes
4231 for the long double precision not-a-number.
4233 longdblsize (d_longdbl.U):
4234 This variable contains the value of the LONG_DOUBLESIZE symbol, which
4235 indicates to the C program how many bytes there are in a long double,
4236 if this system supports long doubles. Note that this is
4237 sizeof(long double), which may include unused bytes.
4239 longlongsize (d_longlong.U):
4240 This variable contains the value of the LONGLONGSIZE symbol, which
4241 indicates to the C program how many bytes there are in a long long,
4242 if this system supports long long.
4244 longsize (intsize.U):
4245 This variable contains the value of the LONGSIZE symbol, which
4246 indicates to the C program how many bytes there are in a long.
4249 This variable is defined but not used by Configure.
4250 The value is the empty string and is not useful.
4253 This variable is defined but not used by Configure.
4254 The value is the empty string and is not useful.
4257 This variable is used internally by Configure to determine the
4258 full pathname (if any) of the ls program. After Configure runs,
4259 the value is reset to a plain "ls" and is not useful.
4261 lseeksize (lseektype.U):
4262 This variable defines lseektype to be something like off_t, long,
4263 or whatever type is used to declare lseek offset's type in the
4264 kernel (which also appears to be lseek's return type).
4266 lseektype (lseektype.U):
4267 This variable defines lseektype to be something like off_t, long,
4268 or whatever type is used to declare lseek offset's type in the
4269 kernel (which also appears to be lseek's return type).
4272 This variable is defined but not used by Configure.
4273 The value is the empty string and is not useful.
4276 This variable is defined but not used by Configure.
4277 The value is the empty string and is not useful.
4280 This variable is used internally by Configure to determine the
4281 full pathname (if any) of the make program. After Configure runs,
4282 the value is reset to a plain "make" and is not useful.
4284 make_set_make (make.U):
4285 Some versions of 'make' set the variable MAKE. Others do not.
4286 This variable contains the string to be included in Makefile.SH
4287 so that MAKE is set if needed, and not if not needed.
4288 Possible values are:
4290 make_set_make='#' # If your make program handles this for you,
4292 make_set_make="MAKE=$make" # if it doesn't.
4294 This uses a comment character so that we can distinguish a
4295 'set' value (from a previous config.sh or Configure '-D' option)
4296 from an uncomputed value.
4298 mallocobj (mallocsrc.U):
4299 This variable contains the name of the malloc.o that this package
4300 generates, if that malloc.o is preferred over the system malloc.
4301 Otherwise the value is null. This variable is intended for generating
4302 Makefiles. See mallocsrc.
4304 mallocsrc (mallocsrc.U):
4305 This variable contains the name of the malloc.c that comes with
4306 the package, if that malloc.c is preferred over the system malloc.
4307 Otherwise the value is null. This variable is intended for generating
4310 malloctype (mallocsrc.U):
4311 This variable contains the kind of ptr returned by malloc and realloc.
4313 man1dir (man1dir.U):
4314 This variable contains the name of the directory in which manual
4315 source pages are to be put. It is the responsibility of the
4316 Makefile.SH to get the value of this into the proper command.
4317 You must be prepared to do the ~name expansion yourself.
4319 man1direxp (man1dir.U):
4320 This variable is the same as the man1dir variable, but is filename
4321 expanded at configuration time, for convenient use in makefiles.
4323 man1ext (man1dir.U):
4324 This variable contains the extension that the manual page should
4325 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
4328 man3dir (man3dir.U):
4329 This variable contains the name of the directory in which manual
4330 source pages are to be put. It is the responsibility of the
4331 Makefile.SH to get the value of this into the proper command.
4332 You must be prepared to do the ~name expansion yourself.
4334 man3direxp (man3dir.U):
4335 This variable is the same as the man3dir variable, but is filename
4336 expanded at configuration time, for convenient use in makefiles.
4338 man3ext (man3dir.U):
4339 This variable contains the extension that the manual page should
4340 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
4343 mips_type (usrinc.U):
4344 This variable holds the environment type for the mips system.
4345 Possible values are "BSD 4.3" and "System V".
4347 mistrustnm (Csym.U):
4348 This variable can be used to establish a fallthrough for the cases
4349 where nm fails to find a symbol. If usenm is false or usenm is true
4350 and mistrustnm is false, this variable has no effect. If usenm is true
4351 and mistrustnm is "compile", a test program will be compiled to try to
4352 find any symbol that can't be located via nm lookup. If mistrustnm is
4353 "run", the test program will be run as well as being compiled.
4356 This variable is used internally by Configure to determine the
4357 full pathname (if any) of the mkdir program. After Configure runs,
4358 the value is reset to a plain "mkdir" and is not useful.
4360 mmaptype (d_mmap.U):
4361 This symbol contains the type of pointer returned by mmap()
4362 (and simultaneously the type of the first argument).
4363 It can be 'void *' or 'caddr_t'.
4365 modetype (modetype.U):
4366 This variable defines modetype to be something like mode_t,
4367 int, unsigned short, or whatever type is used to declare file
4368 modes for system calls.
4371 This variable is used internally by Configure to determine the
4372 full pathname (if any) of the more program. After Configure runs,
4373 the value is reset to a plain "more" and is not useful.
4375 multiarch (multiarch.U):
4376 This variable conditionally defines the MULTIARCH symbol
4377 which signifies the presence of multiplatform files.
4378 This is normally set by hints files.
4381 This variable is defined but not used by Configure.
4382 The value is the empty string and is not useful.
4384 myarchname (archname.U):
4385 This variable holds the architecture name computed by Configure in
4386 a previous run. It is not intended to be perused by any user and
4387 should never be set in a hint file.
4389 mydomain (myhostname.U):
4390 This variable contains the eventual value of the MYDOMAIN symbol,
4391 which is the domain of the host the program is going to run on.
4392 The domain must be appended to myhostname to form a complete host name.
4393 The dot comes with mydomain, and need not be supplied by the program.
4395 myhostname (myhostname.U):
4396 This variable contains the eventual value of the MYHOSTNAME symbol,
4397 which is the name of the host the program is going to run on.
4398 The domain is not kept with hostname, but must be gotten from mydomain.
4399 The dot comes with mydomain, and need not be supplied by the program.
4401 myuname (Oldconfig.U):
4402 The output of 'uname -a' if available, otherwise the hostname.
4403 The whole thing is then lower-cased and slashes and single quotes are
4407 This variable contains the '-n' flag if that is what causes the echo
4408 command to suppress newline. Otherwise it is null. Correct usage is
4409 $echo $n "prompt for a question: $c".
4411 need_va_copy (need_va_copy.U):
4412 This symbol, if defined, indicates that the system stores
4413 the variable argument list datatype, va_list, in a format
4414 that cannot be copied by simple assignment, so that some
4415 other means must be used when copying is required.
4416 As such systems vary in their provision (or non-provision)
4417 of copying mechanisms, handy.h defines a platform-
4418 independent macro, Perl_va_copy(src, dst), to do the job.
4420 netdb_hlen_type (netdbtype.U):
4421 This variable holds the type used for the 2nd argument to
4422 gethostbyaddr(). Usually, this is int or size_t or unsigned.
4423 This is only useful if you have gethostbyaddr(), naturally.
4425 netdb_host_type (netdbtype.U):
4426 This variable holds the type used for the 1st argument to
4427 gethostbyaddr(). Usually, this is char * or void *, possibly
4428 with or without a const prefix.
4429 This is only useful if you have gethostbyaddr(), naturally.
4431 netdb_name_type (netdbtype.U):
4432 This variable holds the type used for the argument to
4433 gethostbyname(). Usually, this is char * or const char *.
4434 This is only useful if you have gethostbyname(), naturally.
4436 netdb_net_type (netdbtype.U):
4437 This variable holds the type used for the 1st argument to
4438 getnetbyaddr(). Usually, this is int or long.
4439 This is only useful if you have getnetbyaddr(), naturally.
4442 This variable is used internally by Configure to determine the
4443 full pathname (if any) of the nm program. After Configure runs,
4444 the value is reset to a plain "nm" and is not useful.
4447 This variable holds the options that may be necessary for nm.
4449 nm_so_opt (usenm.U):
4450 This variable holds the options that may be necessary for nm
4451 to work on a shared library but that can not be used on an
4452 archive library. Currently, this is only used by Linux, where
4453 nm --dynamic is *required* to get symbols from an ELF library which
4454 has been stripped, but nm --dynamic is *fatal* on an archive library.
4455 Maybe Linux should just always set usenm=false.
4457 nonxs_ext (Extensions.U):
4458 This variable holds a list of all non-xs extensions built and
4459 installed by the package. By default, all non-xs extensions
4460 distributed will be built, with the exception of platform-specific
4461 extensions (currently only one VMS specific extension).
4464 This variable is used internally by Configure to determine the
4465 full pathname (if any) of the nroff program. After Configure runs,
4466 the value is reset to a plain "nroff" and is not useful.
4468 nv_overflows_integers_at (perlxv.U):
4469 This variable gives the largest integer value that NVs can hold
4470 as a constant floating point expression.
4471 If it could not be determined, it holds the value 0.
4473 nv_preserves_uv_bits (perlxv.U):
4474 This variable indicates how many of bits type uvtype
4475 a variable nvtype can preserve.
4477 nveformat (perlxvf.U):
4478 This variable contains the format string used for printing
4479 a Perl NV using %e-ish floating point format.
4481 nvEUformat (perlxvf.U):
4482 This variable contains the format string used for printing
4483 a Perl NV using %E-ish floating point format.
4485 nvfformat (perlxvf.U):
4486 This variable contains the format string used for printing
4487 a Perl NV using %f-ish floating point format.
4489 nvFUformat (perlxvf.U):
4490 This variable contains the format string used for printing
4491 a Perl NV using %F-ish floating point format.
4493 nvgformat (perlxvf.U):
4494 This variable contains the format string used for printing
4495 a Perl NV using %g-ish floating point format.
4497 nvGUformat (perlxvf.U):
4498 This variable contains the format string used for printing
4499 a Perl NV using %G-ish floating point format.
4501 nvmantbits (mantbits.U):
4502 This variable tells how many bits the mantissa of a Perl NV has,
4503 not including the possible implicit bit.
4506 This variable is the size of a Perl NV in bytes.
4507 Note that some floating point formats have unused bytes.
4510 This variable contains the C type used for Perl's NV.
4512 o_nonblock (nblock_io.U):
4513 This variable bears the symbol value to be used during open() or fcntl()
4514 to turn on non-blocking I/O for a file descriptor. If you wish to switch
4515 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
4516 but that is only supported by some devices.
4519 This is an old synonym for _o.
4521 old_pthread_create_joinable (d_pthrattrj.U):
4522 This variable defines the constant to use for creating joinable
4523 (aka undetached) pthreads. Unused if pthread.h defines
4524 PTHREAD_CREATE_JOINABLE. If used, possible values are
4525 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
4527 optimize (ccflags.U):
4528 This variable contains any optimizer/debugger flag that should be used.
4529 It is up to the Makefile to use it.
4531 orderlib (orderlib.U):
4532 This variable is "true" if the components of libraries must be ordered
4533 (with `lorder $* | tsort`) before placing them in an archive. Set to
4534 "false" if ranlib or ar can generate random libraries.
4536 osname (Oldconfig.U):
4537 This variable contains the operating system name (e.g. sunos,
4538 solaris, hpux, etc.). It can be useful later on for setting
4539 defaults. Any spaces are replaced with underscores. It is set
4540 to a null string if we can't figure it out.
4542 osvers (Oldconfig.U):
4543 This variable contains the operating system version (e.g.
4544 4.1.3, 5.2, etc.). It is primarily used for helping select
4545 an appropriate hints file, but might be useful elsewhere for
4546 setting defaults. It is set to '' if we can't figure it out.
4547 We try to be flexible about how much of the version number
4548 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
4549 same for this package, hints files might just be os_4.0 or
4550 os_4.1, etc., not keeping separate files for each little release.
4552 otherlibdirs (otherlibdirs.U):
4553 This variable contains a colon-separated set of paths for the perl
4554 binary to search for additional library files or modules.
4555 These directories will be tacked to the end of @INC.
4556 Perl will automatically search below each path for version-
4557 and architecture-specific directories. See inc_version_list
4559 A value of ' ' means 'none' and is used to preserve this value
4560 for the next run through Configure.
4562 package (package.U):
4563 This variable contains the name of the package being constructed.
4564 It is primarily intended for the use of later Configure units.
4567 This variable contains the name of the preferred pager on the system.
4568 Usual values are (the full pathnames of) more, less, pg, or cat.
4571 This variable contains a command that produces the text of the
4572 /etc/passwd file. This is normally "cat /etc/passwd", but can be
4573 "ypcat passwd" when NIS is used.
4574 On some systems, such as os390, there may be no equivalent
4575 command, in which case this variable is unset.
4577 patchlevel (patchlevel.U):
4578 The patchlevel level of this package.
4579 The value of patchlevel comes from the patchlevel.h file.
4580 In a version number such as 5.6.1, this is the "6".
4581 In patchlevel.h, this is referred to as "PERL_VERSION".
4584 This is an old synonym for p_ in Head.U, the character
4585 used to separate elements in the command shell search PATH.
4588 This variable is used internally by Configure to determine the
4589 full pathname (if any) of the perl program. After Configure runs,
4590 the value is reset to a plain "perl" and is not useful.
4593 This variable contains the full path (if any) to a previously
4594 installed perl5.005 or later suitable for running the script
4595 to determine inc_version_list.
4597 PERL_API_REVISION (patchlevel.h):
4598 This number describes the earliest compatible PERL_REVISION of
4599 Perl ("compatibility" here being defined as sufficient binary/API
4600 compatibility to run XS code built with the older version).
4601 Normally this does not change across maintenance releases.
4602 Please read the comment in patchlevel.h.
4604 PERL_API_SUBVERSION (patchlevel.h):
4605 This number describes the earliest compatible PERL_SUBVERSION of
4606 Perl ("compatibility" here being defined as sufficient binary/API
4607 compatibility to run XS code built with the older version).
4608 Normally this does not change across maintenance releases.
4609 Please read the comment in patchlevel.h.
4611 PERL_API_VERSION (patchlevel.h):
4612 This number describes the earliest compatible PERL_VERSION of
4613 Perl ("compatibility" here being defined as sufficient binary/API
4614 compatibility to run XS code built with the older version).
4615 Normally this does not change across maintenance releases.
4616 Please read the comment in patchlevel.h.
4618 PERL_CONFIG_SH (Oldsyms.U):
4619 This is set to 'true' in config.sh so that a shell script
4620 sourcing config.sh can tell if it has been sourced already.
4622 PERL_PATCHLEVEL (Oldsyms.U):
4623 This symbol reflects the patchlevel, if available. Will usually
4624 come from the .patch file, which is available when the perl
4625 source tree was fetched with rsync.
4627 perl_patchlevel (patchlevel.U):
4628 This is the Perl patch level, a numeric change identifier,
4629 as defined by whichever source code maintenance system
4630 is used to maintain the patches; currently Perforce.
4631 It does not correlate with the Perl version numbers or
4632 the maintenance versus development dichotomy except
4633 by also being increasing.
4635 PERL_REVISION (Oldsyms.U):
4636 In a Perl version number such as 5.6.2, this is the 5.
4637 This value is manually set in patchlevel.h
4639 perl_static_inline (d_static_inline.U):
4640 This variable defines the PERL_STATIC_INLINE symbol to
4641 the best-guess incantation to use for static inline functions.
4642 Possibilities include
4644 static __inline__ (gcc -ansi)
4645 static __inline (MSVC)
4646 static _inline (older MSVC)
4647 static (c89 compilers)
4649 PERL_SUBVERSION (Oldsyms.U):
4650 In a Perl version number such as 5.6.2, this is the 2.
4651 Values greater than 50 represent potentially unstable
4652 development subversions.
4653 This value is manually set in patchlevel.h
4655 PERL_VERSION (Oldsyms.U):
4656 In a Perl version number such as 5.6.2, this is the 6.
4657 This value is manually set in patchlevel.h
4659 perladmin (perladmin.U):
4660 Electronic mail address of the perl5 administrator.
4663 The list of libraries needed by Perl only (any libraries needed
4664 by extensions only will by dropped, if using dynamic loading).
4666 perlpath (perlpath.U):
4667 This variable contains the eventual value of the PERLPATH symbol,
4668 which contains the name of the perl interpreter to be used in
4669 shell scripts and in the "eval 'exec'" idiom. This variable is
4670 not necessarily the pathname of the file containing the perl
4671 interpreter; you must append the executable extension (_exe) if
4672 it is not already present. Note that Perl code that runs during
4673 the Perl build process cannot reference this variable, as Perl
4674 may not have been installed, or even if installed, may be a
4675 different version of Perl.
4678 This variable is used internally by Configure to determine the
4679 full pathname (if any) of the pg program. After Configure runs,
4680 the value is reset to a plain "pg" and is not useful.
4682 phostname (myhostname.U):
4683 This variable contains the eventual value of the PHOSTNAME symbol,
4684 which is a command that can be fed to popen() to get the host name.
4685 The program should probably not presume that the domain is or isn't
4688 pidtype (pidtype.U):
4689 This variable defines PIDTYPE to be something like pid_t, int,
4690 ushort, or whatever type is used to declare process ids in the kernel.
4693 Holds the private path used by Configure to find out the libraries.
4694 Its value is prepend to libpth. This variable takes care of special
4695 machines, like the mips. Usually, it should be empty.
4698 This variable is defined but not used by Configure.
4699 The value is the empty string and is not useful.
4702 This variable is defined but not used by Configure.
4703 The value is the empty string and is not useful.
4706 This variable holds the name of the directory below which the
4707 user will install the package. Usually, this is /usr/local, and
4708 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4709 man pages in /usr/local/man, etc. It is only used to set defaults
4710 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4712 prefixexp (prefix.U):
4713 This variable holds the full absolute path of the directory below
4714 which the user will install the package. Derived from prefix.
4716 privlib (privlib.U):
4717 This variable contains the eventual value of the PRIVLIB symbol,
4718 which is the name of the private library for this package. It may
4719 have a ~ on the front. It is up to the makefile to eventually create
4720 this directory while performing installation (with ~ substitution).
4722 privlibexp (privlib.U):
4723 This variable is the ~name expanded version of privlib, so that you
4724 may use it directly in Makefiles or shell scripts.
4726 procselfexe (d_procselfexe.U):
4727 If d_procselfexe is defined, $procselfexe is the filename
4728 of the symbolic link pointing to the absolute pathname of
4729 the executing program.
4731 ptrsize (ptrsize.U):
4732 This variable contains the value of the PTRSIZE symbol, which
4733 indicates to the C program how many bytes there are in a pointer.
4735 quadkind (quadtype.U):
4736 This variable, if defined, encodes the type of a quad:
4737 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4739 quadtype (quadtype.U):
4740 This variable defines Quad_t to be something like long, int,
4741 long long, int64_t, or whatever type is used for 64-bit integers.
4743 randbits (randfunc.U):
4744 Indicates how many bits are produced by the function used to
4745 generate normalized random numbers.
4747 randfunc (randfunc.U):
4748 Indicates the name of the random number function to use.
4749 Values include drand48, random, and rand. In C programs,
4750 the 'Drand01' macro is defined to generate uniformly distributed
4751 random numbers over the range [0., 1.[ (see drand01 and nrand).
4753 random_r_proto (d_random_r.U):
4754 This variable encodes the prototype of random_r.
4755 It is zero if d_random_r is undef, and one of the
4756 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4759 randseedtype (randfunc.U):
4760 Indicates the type of the argument of the seedfunc.
4762 ranlib (orderlib.U):
4763 This variable is set to the pathname of the ranlib program, if it is
4764 needed to generate random libraries. Set to ":" if ar can generate
4765 random libraries or if random libraries are not supported
4767 rd_nodata (nblock_io.U):
4768 This variable holds the return code from read() when no data is
4769 present. It should be -1, but some systems return 0 when O_NDELAY is
4770 used, which is a shame because you cannot make the difference between
4771 no data and an EOF.. Sigh!
4773 readdir64_r_proto (d_readdir64_r.U):
4774 This variable encodes the prototype of readdir64_r.
4775 It is zero if d_readdir64_r is undef, and one of the
4776 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4779 readdir_r_proto (d_readdir_r.U):
4780 This variable encodes the prototype of readdir_r.
4781 It is zero if d_readdir_r is undef, and one of the
4782 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4785 revision (patchlevel.U):
4786 The value of revision comes from the patchlevel.h file.
4787 In a version number such as 5.6.1, this is the "5".
4788 In patchlevel.h, this is referred to as "PERL_REVISION".
4791 This variable is used internally by Configure to determine the
4792 full pathname (if any) of the rm program. After Configure runs,
4793 the value is reset to a plain "rm" and is not useful.
4796 This is a cleanup variable for try test programs.
4797 Internal Configure use only.
4800 This variable is defined but not used by Configure.
4801 The value is the empty string and is not useful.
4804 This variable contains the command used by Configure
4805 to copy and execute a cross-compiled executable in the
4806 target host. Useful and available only during Perl build.
4807 Empty string '' if not cross-compiling.
4810 This variable contains 'true' or 'false' depending whether the
4811 nm extraction should be performed or not, according to the value
4812 of usenm and the flags on the Configure command line.
4814 sched_yield (d_pthread_y.U):
4815 This variable defines the way to yield the execution
4816 of the current thread.
4818 scriptdir (scriptdir.U):
4819 This variable holds the name of the directory in which the user wants
4820 to put publicly scripts for the package in question. It is either
4821 the same directory as for binaries, or a special one that can be
4822 mounted across different architectures, like /usr/share. Programs
4823 must be prepared to deal with ~name expansion.
4825 scriptdirexp (scriptdir.U):
4826 This variable is the same as scriptdir, but is filename expanded
4827 at configuration time, for programs not wanting to bother with it.
4830 This variable is used internally by Configure to determine the
4831 full pathname (if any) of the sed program. After Configure runs,
4832 the value is reset to a plain "sed" and is not useful.
4834 seedfunc (randfunc.U):
4835 Indicates the random number generating seed function.
4836 Values include srand48, srandom, and srand.
4838 selectminbits (selectminbits.U):
4839 This variable holds the minimum number of bits operated by select.
4840 That is, if you do select(n, ...), how many bits at least will be
4841 cleared in the masks if some activity is detected. Usually this
4842 is either n or 32*ceil(n/32), especially many little-endians do
4843 the latter. This is only useful if you have select(), naturally.
4845 selecttype (selecttype.U):
4846 This variable holds the type used for the 2nd, 3rd, and 4th
4847 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4848 is defined, and 'int *' otherwise. This is only useful if you
4849 have select(), naturally.
4852 This variable is defined but not used by Configure.
4853 The value is the empty string and is not useful.
4855 setgrent_r_proto (d_setgrent_r.U):
4856 This variable encodes the prototype of setgrent_r.
4857 It is zero if d_setgrent_r is undef, and one of the
4858 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4861 sethostent_r_proto (d_sethostent_r.U):
4862 This variable encodes the prototype of sethostent_r.
4863 It is zero if d_sethostent_r is undef, and one of the
4864 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4867 setlocale_r_proto (d_setlocale_r.U):
4868 This variable encodes the prototype of setlocale_r.
4869 It is zero if d_setlocale_r is undef, and one of the
4870 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4873 setnetent_r_proto (d_setnetent_r.U):
4874 This variable encodes the prototype of setnetent_r.
4875 It is zero if d_setnetent_r is undef, and one of the
4876 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4879 setprotoent_r_proto (d_setprotoent_r.U):
4880 This variable encodes the prototype of setprotoent_r.
4881 It is zero if d_setprotoent_r is undef, and one of the
4882 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4885 setpwent_r_proto (d_setpwent_r.U):
4886 This variable encodes the prototype of setpwent_r.
4887 It is zero if d_setpwent_r is undef, and one of the
4888 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4891 setservent_r_proto (d_setservent_r.U):
4892 This variable encodes the prototype of setservent_r.
4893 It is zero if d_setservent_r is undef, and one of the
4894 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4897 sGMTIME_max (time_size.U):
4898 This variable defines the maximum value of the time_t offset that
4899 the system function gmtime () accepts
4901 sGMTIME_min (time_size.U):
4902 This variable defines the minimum value of the time_t offset that
4903 the system function gmtime () accepts
4906 This variable contains the full pathname of the shell used
4907 on this system to execute Bourne shell scripts. Usually, this will be
4908 /bin/sh, though it's possible that some systems will have /bin/ksh,
4909 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4911 This unit comes before Options.U, so you can't set sh with a '-D'
4912 option, though you can override this (and startsh)
4913 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4916 This variable is defined but not used by Configure.
4917 The value is the empty string and is not useful.
4919 sharpbang (spitshell.U):
4920 This variable contains the string #! if this system supports that
4923 shmattype (d_shmat.U):
4924 This symbol contains the type of pointer returned by shmat().
4925 It can be 'void *' or 'char *'.
4927 shortsize (intsize.U):
4928 This variable contains the value of the SHORTSIZE symbol which
4929 indicates to the C program how many bytes there are in a short.
4931 shrpenv (libperl.U):
4932 If the user builds a shared libperl.so, then we need to tell the
4933 'perl' executable where it will be able to find the installed libperl.so.
4934 One way to do this on some systems is to set the environment variable
4935 LD_RUN_PATH to the directory that will be the final location of the
4936 shared libperl.so. The makefile can use this with something like
4937 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4939 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4942 See the main perl Makefile.SH for actual working usage.
4944 Alternatively, we might be able to use a command line option such
4945 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4946 $archlibexp/CORE (Linux).
4948 shsharp (spitshell.U):
4949 This variable tells further Configure units whether your sh can
4952 sig_count (sig_name.U):
4953 This variable holds a number larger than the largest valid
4954 signal number. This is usually the same as the NSIG macro.
4956 sig_name (sig_name.U):
4957 This variable holds the signal names, space separated. The leading
4958 SIG in signal name is removed. A ZERO is prepended to the list.
4959 This is currently not used, sig_name_init is used instead.
4961 sig_name_init (sig_name.U):
4962 This variable holds the signal names, enclosed in double quotes and
4963 separated by commas, suitable for use in the SIG_NAME definition
4964 below. A "ZERO" is prepended to the list, and the list is
4965 terminated with a plain 0. The leading SIG in signal names
4966 is removed. See sig_num.
4968 sig_num (sig_name.U):
4969 This variable holds the signal numbers, space separated. A ZERO is
4970 prepended to the list (corresponding to the fake SIGZERO).
4971 Those numbers correspond to the value of the signal listed
4972 in the same place within the sig_name list.
4973 This is currently not used, sig_num_init is used instead.
4975 sig_num_init (sig_name.U):
4976 This variable holds the signal numbers, enclosed in double quotes and
4977 separated by commas, suitable for use in the SIG_NUM definition
4978 below. A "ZERO" is prepended to the list, and the list is
4979 terminated with a plain 0.
4981 sig_size (sig_name.U):
4982 This variable contains the number of elements of the sig_name
4985 signal_t (d_voidsig.U):
4986 This variable holds the type of the signal handler (void or int).
4988 sitearch (sitearch.U):
4989 This variable contains the eventual value of the SITEARCH symbol,
4990 which is the name of the private library for this package. It may
4991 have a ~ on the front. It is up to the makefile to eventually create
4992 this directory while performing installation (with ~ substitution).
4993 The standard distribution will put nothing in this directory.
4994 After perl has been installed, users may install their own local
4995 architecture-dependent modules in this directory with
4996 MakeMaker Makefile.PL
4997 or equivalent. See INSTALL for details.
4999 sitearchexp (sitearch.U):
5000 This variable is the ~name expanded version of sitearch, so that you
5001 may use it directly in Makefiles or shell scripts.
5003 sitebin (sitebin.U):
5004 This variable holds the name of the directory in which the user wants
5005 to put add-on publicly executable files for the package in question. It
5006 is most often a local directory such as /usr/local/bin. Programs using
5007 this variable must be prepared to deal with ~name substitution.
5008 The standard distribution will put nothing in this directory.
5009 After perl has been installed, users may install their own local
5010 executables in this directory with
5011 MakeMaker Makefile.PL
5012 or equivalent. See INSTALL for details.
5014 sitebinexp (sitebin.U):
5015 This is the same as the sitebin variable, but is filename expanded at
5016 configuration time, for use in your makefiles.
5018 sitehtml1dir (sitehtml1dir.U):
5019 This variable contains the name of the directory in which site-specific
5020 html source pages are to be put. It is the responsibility of the
5021 Makefile.SH to get the value of this into the proper command.
5022 You must be prepared to do the ~name expansion yourself.
5023 The standard distribution will put nothing in this directory.
5024 After perl has been installed, users may install their own local
5025 html pages in this directory with
5026 MakeMaker Makefile.PL
5027 or equivalent. See INSTALL for details.
5029 sitehtml1direxp (sitehtml1dir.U):
5030 This variable is the same as the sitehtml1dir variable, but is filename
5031 expanded at configuration time, for convenient use in makefiles.
5033 sitehtml3dir (sitehtml3dir.U):
5034 This variable contains the name of the directory in which site-specific
5035 library html source pages are to be put. It is the responsibility of the
5036 Makefile.SH to get the value of this into the proper command.
5037 You must be prepared to do the ~name expansion yourself.
5038 The standard distribution will put nothing in this directory.
5039 After perl has been installed, users may install their own local
5040 library html pages in this directory with
5041 MakeMaker Makefile.PL
5042 or equivalent. See INSTALL for details.
5044 sitehtml3direxp (sitehtml3dir.U):
5045 This variable is the same as the sitehtml3dir variable, but is filename
5046 expanded at configuration time, for convenient use in makefiles.
5048 sitelib (sitelib.U):
5049 This variable contains the eventual value of the SITELIB symbol,
5050 which is the name of the private library for this package. It may
5051 have a ~ on the front. It is up to the makefile to eventually create
5052 this directory while performing installation (with ~ substitution).
5053 The standard distribution will put nothing in this directory.
5054 After perl has been installed, users may install their own local
5055 architecture-independent modules in this directory with
5056 MakeMaker Makefile.PL
5057 or equivalent. See INSTALL for details.
5059 sitelib_stem (sitelib.U):
5060 This variable is $sitelibexp with any trailing version-specific component
5061 removed. The elements in inc_version_list (inc_version_list.U) can
5062 be tacked onto this variable to generate a list of directories to search.
5064 sitelibexp (sitelib.U):
5065 This variable is the ~name expanded version of sitelib, so that you
5066 may use it directly in Makefiles or shell scripts.
5068 siteman1dir (siteman1dir.U):
5069 This variable contains the name of the directory in which site-specific
5070 manual source pages are to be put. It is the responsibility of the
5071 Makefile.SH to get the value of this into the proper command.
5072 You must be prepared to do the ~name expansion yourself.
5073 The standard distribution will put nothing in this directory.
5074 After perl has been installed, users may install their own local
5075 man1 pages in this directory with
5076 MakeMaker Makefile.PL
5077 or equivalent. See INSTALL for details.
5079 siteman1direxp (siteman1dir.U):
5080 This variable is the same as the siteman1dir variable, but is filename
5081 expanded at configuration time, for convenient use in makefiles.
5083 siteman3dir (siteman3dir.U):
5084 This variable contains the name of the directory in which site-specific
5085 library man source pages are to be put. It is the responsibility of the
5086 Makefile.SH to get the value of this into the proper command.
5087 You must be prepared to do the ~name expansion yourself.
5088 The standard distribution will put nothing in this directory.
5089 After perl has been installed, users may install their own local
5090 man3 pages in this directory with
5091 MakeMaker Makefile.PL
5092 or equivalent. See INSTALL for details.
5094 siteman3direxp (siteman3dir.U):
5095 This variable is the same as the siteman3dir variable, but is filename
5096 expanded at configuration time, for convenient use in makefiles.
5098 siteprefix (siteprefix.U):
5099 This variable holds the full absolute path of the directory below
5100 which the user will install add-on packages.
5101 See INSTALL for usage and examples.
5103 siteprefixexp (siteprefix.U):
5104 This variable holds the full absolute path of the directory below
5105 which the user will install add-on packages. Derived from siteprefix.
5107 sitescript (sitescript.U):
5108 This variable holds the name of the directory in which the user wants
5109 to put add-on publicly executable files for the package in question. It
5110 is most often a local directory such as /usr/local/bin. Programs using
5111 this variable must be prepared to deal with ~name substitution.
5112 The standard distribution will put nothing in this directory.
5113 After perl has been installed, users may install their own local
5114 scripts in this directory with
5115 MakeMaker Makefile.PL
5116 or equivalent. See INSTALL for details.
5118 sitescriptexp (sitescript.U):
5119 This is the same as the sitescript variable, but is filename expanded at
5120 configuration time, for use in your makefiles.
5122 sizesize (sizesize.U):
5123 This variable contains the size of a sizetype in bytes.
5125 sizetype (sizetype.U):
5126 This variable defines sizetype to be something like size_t,
5127 unsigned long, or whatever type is used to declare length
5128 parameters for string functions.
5131 This variable is defined but not used by Configure.
5132 The value is the empty string and is not useful.
5134 sLOCALTIME_max (time_size.U):
5135 This variable defines the maximum value of the time_t offset that
5136 the system function localtime () accepts
5138 sLOCALTIME_min (time_size.U):
5139 This variable defines the minimum value of the time_t offset that
5140 the system function localtime () accepts
5143 This variable is defined but not used by Configure.
5144 The value is the empty string and is not useful.
5147 This variable holds the extension used to identify shared libraries
5148 (also known as shared objects) on the system. Usually set to 'so'.
5150 sockethdr (d_socket.U):
5151 This variable has any cpp '-I' flags needed for socket support.
5153 socketlib (d_socket.U):
5154 This variable has the names of any libraries needed for socket support.
5156 socksizetype (socksizetype.U):
5157 This variable holds the type used for the size argument
5158 for various socket calls like accept. Usual values include
5159 socklen_t, size_t, and int.
5162 This variable is used internally by Configure to determine the
5163 full pathname (if any) of the sort program. After Configure runs,
5164 the value is reset to a plain "sort" and is not useful.
5166 spackage (package.U):
5167 This variable contains the name of the package being constructed,
5168 with the first letter uppercased, i.e. suitable for starting
5171 spitshell (spitshell.U):
5172 This variable contains the command necessary to spit out a runnable
5173 shell on this system. It is either cat or a grep '-v' for # comments.
5175 sPRId64 (quadfio.U):
5176 This variable, if defined, contains the string used by stdio to
5177 format 64-bit decimal numbers (format 'd') for output.
5179 sPRIeldbl (longdblfio.U):
5180 This variable, if defined, contains the string used by stdio to
5181 format long doubles (format 'e') for output.
5183 sPRIEUldbl (longdblfio.U):
5184 This variable, if defined, contains the string used by stdio to
5185 format long doubles (format 'E') for output.
5186 The 'U' in the name is to separate this from sPRIeldbl so that even
5187 case-blind systems can see the difference.
5189 sPRIfldbl (longdblfio.U):
5190 This variable, if defined, contains the string used by stdio to
5191 format long doubles (format 'f') for output.
5193 sPRIFUldbl (longdblfio.U):
5194 This variable, if defined, contains the string used by stdio to
5195 format long doubles (format 'F') for output.
5196 The 'U' in the name is to separate this from sPRIfldbl so that even
5197 case-blind systems can see the difference.
5199 sPRIgldbl (longdblfio.U):
5200 This variable, if defined, contains the string used by stdio to
5201 format long doubles (format 'g') for output.
5203 sPRIGUldbl (longdblfio.U):
5204 This variable, if defined, contains the string used by stdio to
5205 format long doubles (format 'G') for output.
5206 The 'U' in the name is to separate this from sPRIgldbl so that even
5207 case-blind systems can see the difference.
5209 sPRIi64 (quadfio.U):
5210 This variable, if defined, contains the string used by stdio to
5211 format 64-bit decimal numbers (format 'i') for output.
5213 sPRIo64 (quadfio.U):
5214 This variable, if defined, contains the string used by stdio to
5215 format 64-bit octal numbers (format 'o') for output.
5217 sPRIu64 (quadfio.U):
5218 This variable, if defined, contains the string used by stdio to
5219 format 64-bit unsigned decimal numbers (format 'u') for output.
5221 sPRIx64 (quadfio.U):
5222 This variable, if defined, contains the string used by stdio to
5223 format 64-bit hexadecimal numbers (format 'x') for output.
5225 sPRIXU64 (quadfio.U):
5226 This variable, if defined, contains the string used by stdio to
5227 format 64-bit hExADECimAl numbers (format 'X') for output.
5228 The 'U' in the name is to separate this from sPRIx64 so that even
5229 case-blind systems can see the difference.
5231 srand48_r_proto (d_srand48_r.U):
5232 This variable encodes the prototype of srand48_r.
5233 It is zero if d_srand48_r is undef, and one of the
5234 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
5237 srandom_r_proto (d_srandom_r.U):
5238 This variable encodes the prototype of srandom_r.
5239 It is zero if d_srandom_r is undef, and one of the
5240 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
5244 This variable holds the (possibly relative) path of the package source.
5245 It is up to the Makefile to use this variable and set VPATH accordingly
5246 to find the sources remotely. Use $pkgsrc to have an absolute path.
5248 sSCNfldbl (longdblfio.U):
5249 This variable, if defined, contains the string used by stdio to
5250 format long doubles (format 'f') for input.
5252 ssizetype (ssizetype.U):
5253 This variable defines ssizetype to be something like ssize_t,
5254 long or int. It is used by functions that return a count
5255 of bytes or an error condition. It must be a signed type.
5256 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
5258 st_ino_sign (st_ino_def.U):
5259 This variable contains the signedness of struct stat's st_ino.
5260 1 for unsigned, -1 for signed.
5262 st_ino_size (st_ino_def.U):
5263 This variable contains the size of struct stat's st_ino in bytes.
5265 startperl (startperl.U):
5266 This variable contains the string to put on the front of a perl
5267 script to make sure (hopefully) that it runs with perl and not some
5268 shell. Of course, that leading line must be followed by the classical
5270 eval 'exec perl -S $0 ${1+"$@"}'
5271 if $running_under_some_shell;
5272 to guarantee perl startup should the shell execute the script. Note
5273 that this magic incantation is not understood by csh.
5275 startsh (startsh.U):
5276 This variable contains the string to put on the front of a shell
5277 script to make sure (hopefully) that it runs with sh and not some
5280 static_ext (Extensions.U):
5281 This variable holds a list of XS extension files we want to
5282 link statically into the package. It is used by Makefile.
5284 stdchar (stdchar.U):
5285 This variable conditionally defines STDCHAR to be the type of char
5286 used in stdio.h. It has the values "unsigned char" or "char".
5288 stdio_base (d_stdstdio.U):
5289 This variable defines how, given a FILE pointer, fp, to access the
5290 _base field (or equivalent) of stdio.h's FILE structure. This will
5291 be used to define the macro FILE_base(fp).
5293 stdio_bufsiz (d_stdstdio.U):
5294 This variable defines how, given a FILE pointer, fp, to determine
5295 the number of bytes store in the I/O buffer pointer to by the
5296 _base field (or equivalent) of stdio.h's FILE structure. This will
5297 be used to define the macro FILE_bufsiz(fp).
5299 stdio_cnt (d_stdstdio.U):
5300 This variable defines how, given a FILE pointer, fp, to access the
5301 _cnt field (or equivalent) of stdio.h's FILE structure. This will
5302 be used to define the macro FILE_cnt(fp).
5304 stdio_filbuf (d_stdstdio.U):
5305 This variable defines how, given a FILE pointer, fp, to tell
5306 stdio to refill its internal buffers (?). This will
5307 be used to define the macro FILE_filbuf(fp).
5309 stdio_ptr (d_stdstdio.U):
5310 This variable defines how, given a FILE pointer, fp, to access the
5311 _ptr field (or equivalent) of stdio.h's FILE structure. This will
5312 be used to define the macro FILE_ptr(fp).
5314 stdio_stream_array (stdio_streams.U):
5315 This variable tells the name of the array holding the stdio streams.
5316 Usual values include _iob, __iob, and __sF.
5318 strerror_r_proto (d_strerror_r.U):
5319 This variable encodes the prototype of strerror_r.
5320 It is zero if d_strerror_r is undef, and one of the
5321 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
5325 This variable is defined but not used by Configure.
5326 The value is the empty string and is not useful.
5328 subversion (patchlevel.U):
5329 The subversion level of this package.
5330 The value of subversion comes from the patchlevel.h file.
5331 In a version number such as 5.6.1, this is the "1".
5332 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
5333 This is unique to perl.
5336 This variable holds the place where the manual is located on this
5337 system. It is not the place where the user wants to put his manual
5338 pages. Rather it is the place where Configure may look to find manual
5339 for unix commands (section 1 of the manual usually). See mansrc.
5341 sysroot (Sysroot.U):
5342 This variable is empty unless supplied by the Configure user.
5343 It can contain a path to an alternative root directory, under which
5344 headers and libraries for the compilation target can be found. This
5345 is generally used when cross-compiling using a gcc-like compiler.
5348 This variable is defined but not used by Configure.
5349 The value is the empty string and is not useful.
5352 This variable is defined but not used by Configure.
5353 The value is the empty string and is not useful.
5355 targetarch (Cross.U):
5356 If cross-compiling, this variable contains the target architecture.
5357 If not, this will be empty.
5359 targetdir (Cross.U):
5360 This variable contains a path that will be created on the target
5361 host using targetmkdir, and then used to copy the cross-compiled
5362 executables to. Defaults to '/tmp' if not set.
5364 targetenv (Cross.U):
5365 If cross-compiling, this variable can be used to modify the
5366 environment on the target system.
5367 However, how and where it's used, and even if it's used at all, is
5368 entirely dependent on both the transport mechanism (targetrun) and
5369 what the target system is. Unless the relevant documentation says
5370 otherwise, it is genereally not useful.
5372 targethost (Cross.U):
5373 This variable contains the name of a separate host machine that
5374 can be used to run compiled test programs and perl tests on.
5375 Set to empty string if not in use.
5377 targetmkdir (Cross.U):
5378 This variable contains the command used by Configure to create a
5379 new directory on the target host.
5381 targetport (Cross.U):
5382 This variable contains the number of a network port to be used to
5383 connect to the host in targethost, if unset defaults to 22 for ssh.
5386 If cross-compiling, this variable contains the location of sh on the
5388 If not, this will be the same as $sh.
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.
5399 This variable is used internally by Configure to determine the
5400 full pathname (if any) of the test program. After Configure runs,
5401 the value is reset to a plain "test" and is not useful.
5403 timeincl (i_time.U):
5404 This variable holds the full path of the included time header(s).
5406 timetype (d_time.U):
5407 This variable holds the type returned by time(). It can be long,
5408 or time_t on BSD sites (in which case <sys/types.h> should be
5409 included). Anyway, the type Time_t should be used.
5411 tmpnam_r_proto (d_tmpnam_r.U):
5412 This variable encodes the prototype of tmpnam_r.
5413 It is zero if d_tmpnam_r is undef, and one of the
5414 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
5418 This variable contains the command used by Configure
5419 to copy to from the target host. Useful and available
5420 only during Perl build.
5421 The string ':' if not cross-compiling.
5424 This variable is used internally by Configure to determine the
5425 full pathname (if any) of the touch program. After Configure runs,
5426 the value is reset to a plain "touch" and is not useful.
5429 This variable is used internally by Configure to determine the
5430 full pathname (if any) of the tr program. After Configure runs,
5431 the value is reset to a plain "tr" and is not useful.
5434 This variable contains the value to be passed to the tr(1)
5435 command to transliterate a newline. Typical values are
5436 '\012' and '\n'. This is needed for EBCDIC systems where
5437 newline is not necessarily '\012'.
5440 This variable is defined but not used by Configure.
5441 The value is the empty string and is not useful.
5443 ttyname_r_proto (d_ttyname_r.U):
5444 This variable encodes the prototype of ttyname_r.
5445 It is zero if d_ttyname_r is undef, and one of the
5446 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
5450 This variable is the size of an U16 in bytes.
5453 This variable contains the C type used for Perl's U16.
5456 This variable is the size of an U32 in bytes.
5459 This variable contains the C type used for Perl's U32.
5462 This variable is the size of an U64 in bytes.
5465 This variable contains the C type used for Perl's U64.
5468 This variable is the size of an U8 in bytes.
5471 This variable contains the C type used for Perl's U8.
5474 This variable contains the format string used for printing a Uid_t.
5476 uidsign (uidsign.U):
5477 This variable contains the signedness of a uidtype.
5478 1 for unsigned, -1 for signed.
5480 uidsize (uidsize.U):
5481 This variable contains the size of a uidtype in bytes.
5483 uidtype (uidtype.U):
5484 This variable defines Uid_t to be something like uid_t, int,
5485 ushort, or whatever type is used to declare user ids in the kernel.
5488 This variable is used internally by Configure to determine the
5489 full pathname (if any) of the uname program. After Configure runs,
5490 the value is reset to a plain "uname" and is not useful.
5493 This variable is used internally by Configure to determine the
5494 full pathname (if any) of the uniq program. After Configure runs,
5495 the value is reset to a plain "uniq" and is not useful.
5497 uquadtype (quadtype.U):
5498 This variable defines Uquad_t to be something like unsigned long,
5499 unsigned int, unsigned long long, uint64_t, or whatever type is
5500 used for 64-bit integers.
5502 use5005threads (usethreads.U):
5503 This variable conditionally defines the USE_5005THREADS symbol,
5504 and indicates that Perl should be built to use the 5.005-based
5505 threading implementation. Only valid up to 5.8.x.
5507 use64bitall (use64bits.U):
5508 This variable conditionally defines the USE_64_BIT_ALL symbol,
5509 and indicates that 64-bit integer types should be used
5510 when available. The maximal possible
5511 64-bitness is employed: LP64 or ILP64, meaning that you will
5512 be able to use more than 2 gigabytes of memory. This mode is
5513 even more binary incompatible than USE_64_BIT_INT. You may not
5514 be able to run the resulting executable in a 32-bit CPU at all or
5515 you may need at least to reboot your OS to 64-bit mode.
5517 use64bitint (use64bits.U):
5518 This variable conditionally defines the USE_64_BIT_INT symbol,
5519 and indicates that 64-bit integer types should be used
5520 when available. The minimal possible 64-bitness
5521 is employed, just enough to get 64-bit integers into Perl.
5522 This may mean using for example "long longs", while your memory
5523 may still be limited to 2 gigabytes.
5525 usecbacktrace (usebacktrace.U):
5526 This variable indicates whether we are compiling with backtrace
5529 usecrosscompile (Cross.U):
5530 This variable conditionally defines the USE_CROSS_COMPILE symbol,
5531 and indicates that Perl has been cross-compiled.
5534 This variable indicates that Perl was configured with development
5535 features enabled. This should not be done for production builds.
5538 This variable indicates if the system supports dynamic
5539 loading of some sort. See also dlsrc and dlobj.
5541 usedtrace (usedtrace.U):
5542 This variable indicates whether we are compiling with dtrace
5543 support. See also dtrace.
5545 usefaststdio (usefaststdio.U):
5546 This variable conditionally defines the USE_FAST_STDIO symbol,
5547 and indicates that Perl should be built to use 'fast stdio'.
5548 Defaults to define in Perls 5.8 and earlier, to undef later.
5550 useithreads (usethreads.U):
5551 This variable conditionally defines the USE_ITHREADS symbol,
5552 and indicates that Perl should be built to use the interpreter-based
5553 threading implementation.
5555 usekernprocpathname (usekernprocpathname.U):
5556 This variable, indicates that we can use sysctl with
5557 KERN_PROC_PATHNAME to get a full path for the executable, and hence
5558 convert $^X to an absolute path.
5560 uselanginfo (Extensions.U):
5561 This variable holds either 'true' or 'false' to indicate
5562 whether the I18N::Langinfo extension should be used. The sole
5563 use for this currently is to allow an easy mechanism for users to skip
5564 this extension from the Configure command line.
5566 uselargefiles (uselfs.U):
5567 This variable conditionally defines the USE_LARGE_FILES symbol,
5568 and indicates that large file interfaces should be used when
5571 uselongdouble (uselongdbl.U):
5572 This variable conditionally defines the USE_LONG_DOUBLE symbol,
5573 and indicates that long doubles should be used when available.
5575 usemallocwrap (mallocsrc.U):
5576 This variable contains y if we are wrapping malloc to prevent
5577 integer overflow during size calculations.
5579 usemorebits (usemorebits.U):
5580 This variable conditionally defines the USE_MORE_BITS symbol,
5581 and indicates that explicit 64-bit interfaces and long doubles
5582 should be used when available.
5584 usemultiplicity (usemultiplicity.U):
5585 This variable conditionally defines the MULTIPLICITY symbol,
5586 and indicates that Perl should be built to use multiplicity.
5588 usemymalloc (mallocsrc.U):
5589 This variable contains y if the malloc that comes with this package
5590 is desired over the system's version of malloc. People often include
5591 special versions of malloc for efficiency, but such versions are often
5592 less portable. See also mallocsrc and mallocobj.
5593 If this is 'y', then -lmalloc is removed from $libs.
5596 This variable contains 'true' or 'false' depending whether the
5597 nm extraction is wanted or not.
5599 usensgetexecutablepath (usensgetexecutablepath.U):
5600 This symbol, if defined, indicates that we can use _NSGetExecutablePath
5601 and realpath to get a full path for the executable, and hence convert
5602 $^X to an absolute path.
5604 useopcode (Extensions.U):
5605 This variable holds either 'true' or 'false' to indicate
5606 whether the Opcode extension should be used. The sole
5607 use for this currently is to allow an easy mechanism
5608 for users to skip the Opcode extension from the Configure
5611 useperlio (useperlio.U):
5612 This variable conditionally defines the USE_PERLIO symbol,
5613 and indicates that the PerlIO abstraction should be
5616 useposix (Extensions.U):
5617 This variable holds either 'true' or 'false' to indicate
5618 whether the POSIX extension should be used. The sole
5619 use for this currently is to allow an easy mechanism
5620 for hints files to indicate that POSIX will not compile
5621 on a particular system.
5623 usequadmath (usequadmath.U):
5624 This variable conditionally defines the USE_QUADMATH symbol,
5625 and indicates that the quadmath library __float128 long doubles
5626 should be used when available.
5628 usereentrant (usethreads.U):
5629 This variable conditionally defines the USE_REENTRANT_API symbol,
5630 which indicates that the thread code may try to use the various
5631 _r versions of library functions. This is only potentially
5632 meaningful if usethreads is set and is very experimental, it is
5633 not even prompted for.
5635 userelocatableinc (bin.U):
5636 This variable is set to true to indicate that perl should relocate
5637 @INC entries at runtime based on the path to the perl binary.
5638 Any @INC paths starting ".../" are relocated relative to the directory
5639 containing the perl binary, and a logical cleanup of the path is then
5640 made around the join point (removing "dir/../" pairs)
5642 useshrplib (libperl.U):
5643 This variable is set to 'true' if the user wishes
5644 to build a shared libperl, and 'false' otherwise.
5646 usesitecustomize (d_sitecustomize.U):
5647 This variable is set to true when the user requires a mechanism that
5648 allows the sysadmin to add entries to @INC at runtime. This variable
5649 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
5651 usesocks (usesocks.U):
5652 This variable conditionally defines the USE_SOCKS symbol,
5653 and indicates that Perl should be built to use SOCKS.
5655 usethreads (usethreads.U):
5656 This variable conditionally defines the USE_THREADS symbol,
5657 and indicates that Perl should be built to use threads.
5659 usevendorprefix (vendorprefix.U):
5660 This variable tells whether the vendorprefix
5661 and consequently other vendor* paths are in use.
5663 useversionedarchname (archname.U):
5664 This variable indicates whether to include the $api_versionstring
5665 as a component of the $archname.
5667 usevfork (d_vfork.U):
5668 This variable is set to true when the user accepts to use vfork.
5669 It is set to false when no vfork is available or when the user
5670 explicitly requests not to use vfork.
5673 This variable holds the path of the include files, which is
5674 usually /usr/include. It is mainly used by other Configure units.
5677 This variable is defined but not used by Configure.
5678 The value is the empty string and is not useful.
5680 uvoformat (perlxvf.U):
5681 This variable contains the format string used for printing
5682 a Perl UV as an unsigned octal integer.
5685 This variable is the size of a UV in bytes.
5688 This variable contains the C type used for Perl's UV.
5690 uvuformat (perlxvf.U):
5691 This variable contains the format string used for printing
5692 a Perl UV as an unsigned decimal integer.
5694 uvxformat (perlxvf.U):
5695 This variable contains the format string used for printing
5696 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
5698 uvXUformat (perlxvf.U):
5699 This variable contains the format string used for printing
5700 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
5702 vendorarch (vendorarch.U):
5703 This variable contains the value of the PERL_VENDORARCH symbol.
5704 It may have a ~ on the front.
5705 The standard distribution will put nothing in this directory.
5706 Vendors who distribute perl may wish to place their own
5707 architecture-dependent modules and extensions in this directory with
5708 MakeMaker Makefile.PL INSTALLDIRS=vendor
5709 or equivalent. See INSTALL for details.
5711 vendorarchexp (vendorarch.U):
5712 This variable is the ~name expanded version of vendorarch, so that you
5713 may use it directly in Makefiles or shell scripts.
5715 vendorbin (vendorbin.U):
5716 This variable contains the eventual value of the VENDORBIN symbol.
5717 It may have a ~ on the front.
5718 The standard distribution will put nothing in this directory.
5719 Vendors who distribute perl may wish to place additional
5720 binaries in this directory with
5721 MakeMaker Makefile.PL INSTALLDIRS=vendor
5722 or equivalent. See INSTALL for details.
5724 vendorbinexp (vendorbin.U):
5725 This variable is the ~name expanded version of vendorbin, so that you
5726 may use it directly in Makefiles or shell scripts.
5728 vendorhtml1dir (vendorhtml1dir.U):
5729 This variable contains the name of the directory for html
5730 pages. It may have a ~ on the front.
5731 The standard distribution will put nothing in this directory.
5732 Vendors who distribute perl may wish to place their own
5733 html pages in this directory with
5734 MakeMaker Makefile.PL INSTALLDIRS=vendor
5735 or equivalent. See INSTALL for details.
5737 vendorhtml1direxp (vendorhtml1dir.U):
5738 This variable is the ~name expanded version of vendorhtml1dir, so that you
5739 may use it directly in Makefiles or shell scripts.
5741 vendorhtml3dir (vendorhtml3dir.U):
5742 This variable contains the name of the directory for html
5743 library pages. It may have a ~ on the front.
5744 The standard distribution will put nothing in this directory.
5745 Vendors who distribute perl may wish to place their own
5746 html pages for modules and extensions in this directory with
5747 MakeMaker Makefile.PL INSTALLDIRS=vendor
5748 or equivalent. See INSTALL for details.
5750 vendorhtml3direxp (vendorhtml3dir.U):
5751 This variable is the ~name expanded version of vendorhtml3dir, so that you
5752 may use it directly in Makefiles or shell scripts.
5754 vendorlib (vendorlib.U):
5755 This variable contains the eventual value of the VENDORLIB symbol,
5756 which is the name of the private library for this package.
5757 The standard distribution will put nothing in this directory.
5758 Vendors who distribute perl may wish to place their own
5759 modules in this directory with
5760 MakeMaker Makefile.PL INSTALLDIRS=vendor
5761 or equivalent. See INSTALL for details.
5763 vendorlib_stem (vendorlib.U):
5764 This variable is $vendorlibexp with any trailing version-specific component
5765 removed. The elements in inc_version_list (inc_version_list.U) can
5766 be tacked onto this variable to generate a list of directories to search.
5768 vendorlibexp (vendorlib.U):
5769 This variable is the ~name expanded version of vendorlib, so that you
5770 may use it directly in Makefiles or shell scripts.
5772 vendorman1dir (vendorman1dir.U):
5773 This variable contains the name of the directory for man1
5774 pages. It may have a ~ on the front.
5775 The standard distribution will put nothing in this directory.
5776 Vendors who distribute perl may wish to place their own
5777 man1 pages in this directory with
5778 MakeMaker Makefile.PL INSTALLDIRS=vendor
5779 or equivalent. See INSTALL for details.
5781 vendorman1direxp (vendorman1dir.U):
5782 This variable is the ~name expanded version of vendorman1dir, so that you
5783 may use it directly in Makefiles or shell scripts.
5785 vendorman3dir (vendorman3dir.U):
5786 This variable contains the name of the directory for man3
5787 pages. It may have a ~ on the front.
5788 The standard distribution will put nothing in this directory.
5789 Vendors who distribute perl may wish to place their own
5790 man3 pages in this directory with
5791 MakeMaker Makefile.PL INSTALLDIRS=vendor
5792 or equivalent. See INSTALL for details.
5794 vendorman3direxp (vendorman3dir.U):
5795 This variable is the ~name expanded version of vendorman3dir, so that you
5796 may use it directly in Makefiles or shell scripts.
5798 vendorprefix (vendorprefix.U):
5799 This variable holds the full absolute path of the directory below
5800 which the vendor will install add-on packages.
5801 See INSTALL for usage and examples.
5803 vendorprefixexp (vendorprefix.U):
5804 This variable holds the full absolute path of the directory below
5805 which the vendor will install add-on packages. Derived from vendorprefix.
5807 vendorscript (vendorscript.U):
5808 This variable contains the eventual value of the VENDORSCRIPT symbol.
5809 It may have a ~ on the front.
5810 The standard distribution will put nothing in this directory.
5811 Vendors who distribute perl may wish to place additional
5812 executable scripts in this directory with
5813 MakeMaker Makefile.PL INSTALLDIRS=vendor
5814 or equivalent. See INSTALL for details.
5816 vendorscriptexp (vendorscript.U):
5817 This variable is the ~name expanded version of vendorscript, so that you
5818 may use it directly in Makefiles or shell scripts.
5820 version (patchlevel.U):
5821 The full version number of this package, such as 5.6.1 (or 5_6_1).
5822 This combines revision, patchlevel, and subversion to get the
5823 full version number, including any possible subversions.
5824 This is suitable for use as a directory name, and hence is
5825 filesystem dependent.
5827 version_patchlevel_string (patchlevel.U):
5828 This is a string combining version, subversion and
5829 perl_patchlevel (if perl_patchlevel is non-zero).
5830 It is typically something like
5831 'version 7 subversion 1' or
5832 'version 7 subversion 1 patchlevel 11224'
5833 It is computed here to avoid duplication of code in myconfig.SH
5836 versiononly (versiononly.U):
5837 If set, this symbol indicates that only the version-specific
5838 components of a perl installation should be installed.
5839 This may be useful for making a test installation of a new
5840 version without disturbing the existing installation.
5841 Setting versiononly is equivalent to setting installperl's -v option.
5842 In particular, the non-versioned scripts and programs such as
5843 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5844 (see INSTALL for a more complete list). Nor are the man
5846 Usually, this is undef.
5849 This variable is defined but not used by Configure.
5850 The value is the empty string and is not useful.
5853 This variable holds extra path (space-separated) used to find
5854 libraries on this platform, for example CPU-specific libraries
5855 (on multi-CPU platforms) may be listed here.
5858 This variable holds the name of the compiler compiler we
5859 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5862 This variable contains any additional yacc flags desired by the
5863 user. It is up to the Makefile to use this.
5866 This variable is defined but not used by Configure.
5867 The value is the empty string and is not useful.
5870 This variable is used internally by Configure to determine the
5871 full pathname (if any) of the zip program. After Configure runs,
5872 the value is reset to a plain "zip" and is not useful.