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.
279 compiler_warning (compiler_warning.U):
280 This variable holds the command to check if the file specified as a
281 parameter contains a compiler warning
284 This variable is defined but not used by Configure.
285 The value is the empty string and is not useful.
287 config_arg0 (Options.U):
288 This variable contains the string used to invoke the Configure
289 command, as reported by the shell in the $0 variable.
291 config_argc (Options.U):
292 This variable contains the number of command-line arguments
293 passed to Configure, as reported by the shell in the $# variable.
294 The individual arguments are stored as variables config_arg1,
297 config_args (Options.U):
298 This variable contains a single string giving the command-line
299 arguments passed to Configure. Spaces within arguments,
300 quotes, and escaped characters are not correctly preserved.
301 To reconstruct the command line, you must assemble the individual
302 command line pieces, given in config_arg[0-9]*.
304 contains (contains.U):
305 This variable holds the command to do a grep with a proper return
306 status. On most sane systems it is simply "grep". On insane systems
307 it is a grep followed by a cat followed by a test. This variable
308 is primarily for the use of other Configure units.
311 This variable is used internally by Configure to determine the
312 full pathname (if any) of the cp program. After Configure runs,
313 the value is reset to a plain "cp" and is not useful.
316 This variable is defined but not used by Configure.
317 The value is the empty string and is not useful.
320 This variable is used internally by Configure to determine the
321 full pathname (if any) of the cpp program. After Configure runs,
322 the value is reset to a plain "cpp" and is not useful.
324 cpp_stuff (cpp_stuff.U):
325 This variable contains an identification of the concatenation mechanism
326 used by the C preprocessor.
328 cppccsymbols (Cppsym.U):
329 The variable contains the symbols defined by the C compiler
330 when it calls cpp. The symbols defined by the cc alone or cpp
331 alone are not in this list, see ccsymbols and cppsymbols.
332 The list is a space-separated list of symbol=value tokens.
334 cppflags (ccflags.U):
335 This variable holds the flags that will be passed to the C pre-
336 processor. It is up to the Makefile to use it.
338 cpplast (cppstdin.U):
339 This variable has the same functionality as cppminus, only it applies
340 to cpprun and not cppstdin.
342 cppminus (cppstdin.U):
343 This variable contains the second part of the string which will invoke
344 the C preprocessor on the standard input and produce to standard
345 output. This variable will have the value "-" if cppstdin needs
346 a minus to specify standard input, otherwise the value is "".
349 This variable contains the command which will invoke a C preprocessor
350 on standard input and put the output to stdout. It is guaranteed not
351 to be a wrapper and may be a null string if no preprocessor can be
352 made directly available. This preprocessor might be different from the
353 one used by the C compiler. Don't forget to append cpplast after the
354 preprocessor options.
356 cppstdin (cppstdin.U):
357 This variable contains the command which will invoke the C
358 preprocessor on standard input and put the output to stdout.
359 It is primarily used by other Configure units that ask about
360 preprocessor symbols.
362 cppsymbols (Cppsym.U):
363 The variable contains the symbols defined by the C preprocessor
364 alone. The symbols defined by cc or by cc when it calls cpp are
365 not in this list, see ccsymbols and cppccsymbols.
366 The list is a space-separated list of symbol=value tokens.
368 crypt_r_proto (d_crypt_r.U):
369 This variable encodes the prototype of crypt_r.
370 It is zero if d_crypt_r is undef, and one of the
371 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
374 cryptlib (d_crypt.U):
375 This variable holds -lcrypt or the path to a libcrypt.a archive if
376 the crypt() function is not defined in the standard C library. It is
377 up to the Makefile to use this.
380 This variable is used internally by Configure to determine the
381 full pathname (if any) of the csh program. After Configure runs,
382 the value is reset to a plain "csh" and is not useful.
384 ctermid_r_proto (d_ctermid_r.U):
385 This variable encodes the prototype of ctermid_r.
386 It is zero if d_ctermid_r is undef, and one of the
387 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
390 ctime_r_proto (d_ctime_r.U):
391 This variable encodes the prototype of ctime_r.
392 It is zero if d_ctime_r is undef, and one of the
393 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
396 d__fwalk (d__fwalk.U):
397 This variable conditionally defines HAS__FWALK if _fwalk() is
398 available to apply a function to all the file handles.
400 d_accept4 (d_accept4.U):
401 This variable conditionally defines HAS_ACCEPT4 if accept4() is
402 available to accept socket connections.
404 d_access (d_access.U):
405 This variable conditionally defines HAS_ACCESS if the access() system
406 call is available to check for access permissions using real IDs.
408 d_accessx (d_accessx.U):
409 This variable conditionally defines the HAS_ACCESSX symbol, which
410 indicates to the C program that the accessx() routine is available.
413 This variable conditionally defines the HAS_ACOSH symbol, which
414 indicates to the C program that the acosh() routine is available.
417 This variable conditionally defines the HAS_AINTL symbol, which
418 indicates to the C program that the aintl() routine is available.
419 If copysignl is also present we can emulate modfl.
422 This variable conditionally defines the HAS_ALARM symbol, which
423 indicates to the C program that the alarm() routine is available.
425 d_archlib (archlib.U):
426 This variable conditionally defines ARCHLIB to hold the pathname
427 of architecture-dependent library files for $package. If
428 $archlib is the same as $privlib, then this is set to undef.
430 d_asctime64 (d_timefuncs64.U):
431 This variable conditionally defines the HAS_ASCTIME64 symbol, which
432 indicates to the C program that the asctime64 () routine is available.
434 d_asctime_r (d_asctime_r.U):
435 This variable conditionally defines the HAS_ASCTIME_R symbol,
436 which indicates to the C program that the asctime_r()
437 routine is available.
440 This variable conditionally defines the HAS_ASINH symbol, which
441 indicates to the C program that the asinh() routine is available.
444 This variable conditionally defines the HAS_ATANH symbol, which
445 indicates to the C program that the atanh() routine is available.
448 This variable conditionally defines the HAS_ATOLF symbol, which
449 indicates to the C program that the atolf() routine is available.
452 This variable conditionally defines the HAS_ATOLL symbol, which
453 indicates to the C program that the atoll() routine is available.
455 d_attribute_always_inline (d_attribut.U):
456 This variable conditionally defines HASATTRIBUTE_ALWAYS_INLINE,
457 which indicates that the C compiler can know that certain
458 functions should always be inlined.
460 d_attribute_deprecated (d_attribut.U):
461 This variable conditionally defines HASATTRIBUTE_DEPRECATED, which
462 indicates that GCC can handle the attribute for marking deprecated
465 d_attribute_format (d_attribut.U):
466 This variable conditionally defines HASATTRIBUTE_FORMAT, which
467 indicates the C compiler can check for printf-like formats.
469 d_attribute_malloc (d_attribut.U):
470 This variable conditionally defines HASATTRIBUTE_MALLOC, which
471 indicates the C compiler can understand functions as having
472 malloc-like semantics.
474 d_attribute_nonnull (d_attribut.U):
475 This variable conditionally defines HASATTRIBUTE_NONNULL, which
476 indicates that the C compiler can know that certain arguments
477 must not be NULL, and will check accordingly at compile time.
479 d_attribute_noreturn (d_attribut.U):
480 This variable conditionally defines HASATTRIBUTE_NORETURN, which
481 indicates that the C compiler can know that certain functions
482 are guaranteed never to return.
484 d_attribute_pure (d_attribut.U):
485 This variable conditionally defines HASATTRIBUTE_PURE, which
486 indicates that the C compiler can know that certain functions
487 are "pure" functions, meaning that they have no side effects, and
488 only rely on function input and/or global data for their results.
490 d_attribute_unused (d_attribut.U):
491 This variable conditionally defines HASATTRIBUTE_UNUSED, which
492 indicates that the C compiler can know that certain variables
493 and arguments may not always be used, and to not throw warnings
494 if they don't get used.
496 d_attribute_warn_unused_result (d_attribut.U):
497 This variable conditionally defines
498 HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
499 compiler can know that certain functions have a return values
500 that must not be ignored, such as malloc() or open().
502 d_backtrace (d_backtrace.U):
503 This variable conditionally defines the HAS_BACKTRACE symbol, which
504 indicates to the C program that the backtrace() routine is available
505 to get a stack trace.
508 This symbol conditionally defines the symbol BSD when running on a
511 d_bsdgetpgrp (d_getpgrp.U):
512 This variable conditionally defines USE_BSD_GETPGRP if
513 getpgrp needs one arguments whereas USG one needs none.
515 d_bsdsetpgrp (d_setpgrp.U):
516 This variable conditionally defines USE_BSD_SETPGRP if
517 setpgrp needs two arguments whereas USG one needs none.
518 See also d_setpgid for a POSIX interface.
520 d_builtin_add_overflow (d_builtin_overflow.U):
521 This variable conditionally defines HAS_BUILTIN_ADD_OVERFLOW, which
522 indicates that the compiler supports __builtin_add_overflow(x,y,&z)
523 for safely adding x and y into z while checking for overflow.
525 d_builtin_choose_expr (d_builtin.U):
526 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
527 indicates that the compiler supports __builtin_choose_expr(x,y,z).
528 This built-in function is analogous to the "x?y:z" operator in C,
529 except that the expression returned has its type unaltered by
530 promotion rules. Also, the built-in function does not evaluate
531 the expression that was not chosen.
533 d_builtin_expect (d_builtin.U):
534 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
535 that the compiler supports __builtin_expect(exp,c). You may use
536 __builtin_expect to provide the compiler with branch prediction
539 d_builtin_mul_overflow (d_builtin_overflow.U):
540 This variable conditionally defines HAS_BUILTIN_MUL_OVERFLOW, which
541 indicates that the compiler supports __builtin_mul_overflow(x,y,&z)
542 for safely multiplying x and y into z while checking for overflow.
544 d_builtin_sub_overflow (d_builtin_overflow.U):
545 This variable conditionally defines HAS_BUILTIN_SUB_OVERFLOW, which
546 indicates that the compiler supports __builtin_sub_overflow(x,y,&z)
547 for safely subtracting y from x into z while checking for overflow.
549 d_c99_variadic_macros (d_c99_variadic.U):
550 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
551 symbol, which indicates to the C program that C99 variadic macros
554 d_casti32 (d_casti32.U):
555 This variable conditionally defines CASTI32, which indicates
556 whether the C compiler can cast large floats to 32-bit ints.
558 d_castneg (d_castneg.U):
559 This variable conditionally defines CASTNEG, which indicates
560 whether the C compiler can cast negative float to unsigned.
563 This variable conditionally defines the HAS_CBRT symbol, which
564 indicates to the C program that the cbrt() (cube root) function
568 This variable conditionally defines the HAS_CHOWN symbol, which
569 indicates to the C program that the chown() routine is available.
571 d_chroot (d_chroot.U):
572 This variable conditionally defines the HAS_CHROOT symbol, which
573 indicates to the C program that the chroot() routine is available.
575 d_chsize (d_chsize.U):
576 This variable conditionally defines the CHSIZE symbol, which
577 indicates to the C program that the chsize() routine is available
578 to truncate files. You might need a -lx to get this routine.
581 This variable conditionally defines the HAS_CLASS symbol, which
582 indicates to the C program that the class() routine is available.
584 d_clearenv (d_clearenv.U):
585 This variable conditionally defines the HAS_CLEARENV symbol, which
586 indicates to the C program that the clearenv () routine is available.
588 d_closedir (d_closedir.U):
589 This variable conditionally defines HAS_CLOSEDIR if closedir() is
592 d_cmsghdr_s (d_cmsghdr_s.U):
593 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
594 which indicates that the struct cmsghdr is supported.
596 d_copysign (d_copysign.U):
597 This variable conditionally defines the HAS_COPYSIGN symbol, which
598 indicates to the C program that the copysign() routine is available.
600 d_copysignl (d_copysignl.U):
601 This variable conditionally defines the HAS_COPYSIGNL symbol, which
602 indicates to the C program that the copysignl() routine is available.
603 If aintl is also present we can emulate modfl.
605 d_cplusplus (d_cplusplus.U):
606 This variable conditionally defines the USE_CPLUSPLUS symbol, which
607 indicates that a C++ compiler was used to compiled Perl and will be
608 used to compile extensions.
611 This variable conditionally defines the CRYPT symbol, which
612 indicates to the C program that the crypt() routine is available
613 to encrypt passwords and the like.
615 d_crypt_r (d_crypt_r.U):
616 This variable conditionally defines the HAS_CRYPT_R symbol,
617 which indicates to the C program that the crypt_r()
618 routine is available.
621 This variable conditionally defines the CSH symbol, which
622 indicates to the C program that the C-shell exists.
624 d_ctermid (d_ctermid.U):
625 This variable conditionally defines CTERMID if ctermid() is
626 available to generate filename for terminal.
628 d_ctermid_r (d_ctermid_r.U):
629 This variable conditionally defines the HAS_CTERMID_R symbol,
630 which indicates to the C program that the ctermid_r()
631 routine is available.
633 d_ctime64 (d_timefuncs64.U):
634 This variable conditionally defines the HAS_CTIME64 symbol, which
635 indicates to the C program that the ctime64 () routine is available.
637 d_ctime_r (d_ctime_r.U):
638 This variable conditionally defines the HAS_CTIME_R symbol,
639 which indicates to the C program that the ctime_r()
640 routine is available.
642 d_cuserid (d_cuserid.U):
643 This variable conditionally defines the HAS_CUSERID symbol, which
644 indicates to the C program that the cuserid() routine is available
645 to get character login names.
647 d_dbminitproto (d_dbminitproto.U):
648 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
649 which indicates to the C program that the system provides
650 a prototype for the dbminit() function. Otherwise, it is
651 up to the program to supply one.
653 d_difftime (d_difftime.U):
654 This variable conditionally defines the HAS_DIFFTIME symbol, which
655 indicates to the C program that the difftime() routine is available.
657 d_difftime64 (d_timefuncs64.U):
658 This variable conditionally defines the HAS_DIFFTIME64 symbol, which
659 indicates to the C program that the difftime64 () routine is available.
661 d_dir_dd_fd (d_dir_dd_fd.U):
662 This variable conditionally defines the HAS_DIR_DD_FD symbol, which
663 indicates that the DIR directory stream type contains a member
664 variable called dd_fd.
667 This variable conditionally defines the HAS_DIRFD constant,
668 which indicates to the C program that dirfd() is available
669 to return the file descriptor of a directory stream.
671 d_dirnamlen (i_dirent.U):
672 This variable conditionally defines DIRNAMLEN, which indicates
673 to the C program that the length of directory entry names is
674 provided by a d_namelen field.
676 d_dladdr (d_dladdr.U):
677 This variable conditionally defines the HAS_DLADDR symbol, which
678 indicates to the C program that the dladdr() routine is available
679 to get a stack trace.
681 d_dlerror (d_dlerror.U):
682 This variable conditionally defines the HAS_DLERROR symbol, which
683 indicates to the C program that the dlerror() routine is available.
685 d_dlopen (d_dlopen.U):
686 This variable conditionally defines the HAS_DLOPEN symbol, which
687 indicates to the C program that the dlopen() routine is available.
689 d_dlsymun (d_dlsymun.U):
690 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
691 indicates that we need to prepend an underscore to the symbol
692 name before calling dlsym().
694 d_dosuid (d_dosuid.U):
695 This variable conditionally defines the symbol DOSUID, which
696 tells the C program that it should insert setuid emulation code
697 on hosts which have setuid #! scripts disabled.
699 d_double_has_inf (longdblfio.U):
700 This variable conditionally defines the symbol DOUBLE_HAS_INF
701 which indicates that the double type has an infinity.
703 d_double_has_nan (longdblfio.U):
704 This variable conditionally defines the symbol DOUBLE_HAS_NAN
705 which indicates that the double type has a not-a-number.
707 d_double_has_negative_zero (longdblfio.U):
708 This variable conditionally defines the symbol DOUBLE_HAS_NEGATIVE_ZERO
709 which indicates that the double type has a negative zero.
711 d_double_has_subnormals (longdblfio.U):
712 This variable conditionally defines the symbol DOUBLE_HAS_SUBNORMALS
713 which indicates that the double type has subnormals (denormals).
715 d_double_style_cray (longdblfio.U):
716 This variable conditionally defines the symbol DOUBLE_STYLE_CRAY
717 which indicates that the double is the 64-bit CRAY mainframe format.
719 d_double_style_ibm (longdblfio.U):
720 This variable conditionally defines the symbol DOUBLE_STYLE_IBM,
721 which indicates that the double is the 64-bit IBM mainframe format.
723 d_double_style_ieee (longdblfio.U):
724 This variable conditionally defines the symbol DOUBLE_STYLE_IEEE,
725 which indicates that the double is the 64-bit IEEE 754.
727 d_double_style_vax (longdblfio.U):
728 This variable conditionally defines the symbol DOUBLE_STYLE_VAX,
729 which indicates that the double is the 64-bit VAX format D or G.
731 d_drand48_r (d_drand48_r.U):
732 This variable conditionally defines the HAS_DRAND48_R symbol,
733 which indicates to the C program that the drand48_r()
734 routine is available.
736 d_drand48proto (d_drand48proto.U):
737 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
738 which indicates to the C program that the system provides
739 a prototype for the drand48() function. Otherwise, it is
740 up to the program to supply one.
743 This variable conditionally defines HAS_DUP2 if dup2() is
744 available to duplicate file descriptors.
747 This variable conditionally defines HAS_DUP3 if dup3() is
748 available to duplicate file descriptors.
750 d_duplocale (d_newlocale.U):
751 This variable conditionally defines the HAS_DUPLOCALE symbol, which
752 indicates to the C program that the duplocale() routine is available
753 to duplicate a locale object.
755 d_eaccess (d_eaccess.U):
756 This variable conditionally defines the HAS_EACCESS symbol, which
757 indicates to the C program that the eaccess() routine is available.
759 d_endgrent (d_endgrent.U):
760 This variable conditionally defines the HAS_ENDGRENT symbol, which
761 indicates to the C program that the endgrent() routine is available
762 for sequential access of the group database.
764 d_endgrent_r (d_endgrent_r.U):
765 This variable conditionally defines the HAS_ENDGRENT_R symbol,
766 which indicates to the C program that the endgrent_r()
767 routine is available.
769 d_endhent (d_endhent.U):
770 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
771 available to close whatever was being used for host queries.
773 d_endhostent_r (d_endhostent_r.U):
774 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
775 which indicates to the C program that the endhostent_r()
776 routine is available.
778 d_endnent (d_endnent.U):
779 This variable conditionally defines HAS_ENDNETENT if endnetent() is
780 available to close whatever was being used for network queries.
782 d_endnetent_r (d_endnetent_r.U):
783 This variable conditionally defines the HAS_ENDNETENT_R symbol,
784 which indicates to the C program that the endnetent_r()
785 routine is available.
787 d_endpent (d_endpent.U):
788 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
789 available to close whatever was being used for protocol queries.
791 d_endprotoent_r (d_endprotoent_r.U):
792 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
793 which indicates to the C program that the endprotoent_r()
794 routine is available.
796 d_endpwent (d_endpwent.U):
797 This variable conditionally defines the HAS_ENDPWENT symbol, which
798 indicates to the C program that the endpwent() routine is available
799 for sequential access of the passwd database.
801 d_endpwent_r (d_endpwent_r.U):
802 This variable conditionally defines the HAS_ENDPWENT_R symbol,
803 which indicates to the C program that the endpwent_r()
804 routine is available.
806 d_endsent (d_endsent.U):
807 This variable conditionally defines HAS_ENDSERVENT if endservent() is
808 available to close whatever was being used for service queries.
810 d_endservent_r (d_endservent_r.U):
811 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
812 which indicates to the C program that the endservent_r()
813 routine is available.
815 d_eofnblk (nblock_io.U):
816 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
817 when reading from a non-blocking I/O source.
820 This variable conditionally defines the HAS_ERF symbol, which
821 indicates to the C program that the erf() routine is available.
824 This variable conditionally defines the HAS_ERFC symbol, which
825 indicates to the C program that the erfc() routine is available.
828 This variable conditionally defines the symbols EUNICE and VAX, which
829 alerts the C program that it must deal with idiosyncrasies of VMS.
832 This variable conditionally defines the HAS_EXP2 symbol, which
833 indicates to the C program that the exp2() routine is available.
836 This variable conditionally defines the HAS_EXPM1 symbol, which
837 indicates to the C program that the expm1() routine is available.
839 d_faststdio (d_faststdio.U):
840 This variable conditionally defines the HAS_FAST_STDIO symbol,
841 which indicates to the C program that the "fast stdio" is available
842 to manipulate the stdio buffers directly.
844 d_fchdir (d_fchdir.U):
845 This variable conditionally defines the HAS_FCHDIR symbol, which
846 indicates to the C program that the fchdir() routine is available.
848 d_fchmod (d_fchmod.U):
849 This variable conditionally defines the HAS_FCHMOD symbol, which
850 indicates to the C program that the fchmod() routine is available
851 to change mode of opened files.
853 d_fchmodat (d_fsat.U):
854 This variable conditionally defines the HAS_FCHMODAT symbol, which
855 indicates the POSIX fchmodat() function is available.
857 d_fchown (d_fchown.U):
858 This variable conditionally defines the HAS_FCHOWN symbol, which
859 indicates to the C program that the fchown() routine is available
860 to change ownership of opened files.
863 This variable conditionally defines the HAS_FCNTL symbol, and indicates
864 whether the fcntl() function exists
866 d_fcntl_can_lock (d_fcntl_can_lock.U):
867 This variable conditionally defines the FCNTL_CAN_LOCK symbol
868 and indicates whether file locking with fcntl() works.
870 d_fd_macros (d_fd_set.U):
871 This variable contains the eventual value of the HAS_FD_MACROS symbol,
872 which indicates if your C compiler knows about the macros which
873 manipulate an fd_set.
875 d_fd_set (d_fd_set.U):
876 This variable contains the eventual value of the HAS_FD_SET symbol,
877 which indicates if your C compiler knows about the fd_set typedef.
879 d_fdclose (d_fdclose.U):
880 This variable conditionally defines the HAS_FDCLOSE symbol, which
881 indicates to the C program that the fdclose() routine is available.
884 This variable conditionally defines the HAS_FDIM symbol, which
885 indicates to the C program that the fdim() routine is available.
887 d_fds_bits (d_fd_set.U):
888 This variable contains the eventual value of the HAS_FDS_BITS symbol,
889 which indicates if your fd_set typedef contains the fds_bits member.
890 If you have an fd_set typedef, but the dweebs who installed it did
891 a half-fast job and neglected to provide the macros to manipulate
892 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
894 d_fegetround (d_fegetround.U):
895 This variable conditionally defines HAS_FEGETROUND if fegetround() is
896 available to get the floating point rounding mode.
899 This variable conditionally defines the HAS_FFS symbol, which
900 indicates to the C program that the ffs() routine is available
901 to find the first bit which is set in its integer argument.
904 This variable conditionally defines the HAS_FFSL symbol, which
905 indicates to the C program that the ffsl() routine is available
906 to find the first bit which is set in its long integer argument.
908 d_fgetpos (d_fgetpos.U):
909 This variable conditionally defines HAS_FGETPOS if fgetpos() is
910 available to get the file position indicator.
912 d_finite (d_finite.U):
913 This variable conditionally defines the HAS_FINITE symbol, which
914 indicates to the C program that the finite() routine is available.
916 d_finitel (d_finitel.U):
917 This variable conditionally defines the HAS_FINITEL symbol, which
918 indicates to the C program that the finitel() routine is available.
920 d_flexfnam (d_flexfnam.U):
921 This variable conditionally defines the FLEXFILENAMES symbol, which
922 indicates that the system supports filenames longer than 14 characters.
925 This variable conditionally defines HAS_FLOCK if flock() is
926 available to do file locking.
928 d_flockproto (d_flockproto.U):
929 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
930 which indicates to the C program that the system provides
931 a prototype for the flock() function. Otherwise, it is
932 up to the program to supply one.
935 This variable conditionally defines the HAS_FMA symbol, which
936 indicates to the C program that the fma() routine is available.
939 This variable conditionally defines the HAS_FMAX symbol, which
940 indicates to the C program that the fmax() routine is available.
943 This variable conditionally defines the HAS_FMIN symbol, which
944 indicates to the C program that the fmin() routine is available.
947 This variable conditionally defines the HAS_FORK symbol, which
948 indicates to the C program that the fork() routine is available.
950 d_fp_class (d_fp_class.U):
951 This variable conditionally defines the HAS_FP_CLASS symbol, which
952 indicates to the C program that the fp_class() routine is available.
954 d_fp_classify (d_fpclassify.U):
955 This variable conditionally defines the HAS_FP_CLASSIFY symbol, which
956 indicates to the C program that the fp_classify() routine is available.
958 d_fp_classl (d_fp_classl.U):
959 This variable conditionally defines the HAS_FP_CLASSL symbol, which
960 indicates to the C program that the fp_classl() routine is available.
962 d_fpathconf (d_pathconf.U):
963 This variable conditionally defines the HAS_FPATHCONF symbol, which
964 indicates to the C program that the pathconf() routine is available
965 to determine file-system related limits and options associated
966 with a given open file descriptor.
968 d_fpclass (d_fpclass.U):
969 This variable conditionally defines the HAS_FPCLASS symbol, which
970 indicates to the C program that the fpclass() routine is available.
972 d_fpclassify (d_fpclassify.U):
973 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
974 indicates to the C program that the fpclassify() routine is available.
976 d_fpclassl (d_fpclassl.U):
977 This variable conditionally defines the HAS_FPCLASSL symbol, which
978 indicates to the C program that the fpclassl() routine is available.
980 d_fpgetround (d_fpgetround.U):
981 This variable conditionally defines HAS_FPGETROUND if fpgetround()
982 is available to get the floating point rounding mode.
984 d_fpos64_t (d_fpos64_t.U):
985 This symbol will be defined if the C compiler supports fpos64_t.
987 d_freelocale (d_newlocale.U):
988 This variable conditionally defines the HAS_FREELOCALE symbol, which
989 indicates to the C program that the freelocale() routine is available
990 to deallocates the resources associated with a locale object.
992 d_frexpl (d_frexpl.U):
993 This variable conditionally defines the HAS_FREXPL symbol, which
994 indicates to the C program that the frexpl() routine is available.
996 d_fs_data_s (d_fs_data_s.U):
997 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
998 which indicates that the struct fs_data is supported.
1000 d_fseeko (d_fseeko.U):
1001 This variable conditionally defines the HAS_FSEEKO symbol, which
1002 indicates to the C program that the fseeko() routine is available.
1004 d_fsetpos (d_fsetpos.U):
1005 This variable conditionally defines HAS_FSETPOS if fsetpos() is
1006 available to set the file position indicator.
1008 d_fstatfs (d_fstatfs.U):
1009 This variable conditionally defines the HAS_FSTATFS symbol, which
1010 indicates to the C program that the fstatfs() routine is available.
1012 d_fstatvfs (d_statvfs.U):
1013 This variable conditionally defines the HAS_FSTATVFS symbol, which
1014 indicates to the C program that the fstatvfs() routine is available.
1016 d_fsync (d_fsync.U):
1017 This variable conditionally defines the HAS_FSYNC symbol, which
1018 indicates to the C program that the fsync() routine is available.
1020 d_ftello (d_ftello.U):
1021 This variable conditionally defines the HAS_FTELLO symbol, which
1022 indicates to the C program that the ftello() routine is available.
1024 d_ftime (d_ftime.U):
1025 This variable conditionally defines the HAS_FTIME symbol, which indicates
1026 that the ftime() routine exists. The ftime() routine is basically
1027 a sub-second accuracy clock.
1029 d_futimes (d_futimes.U):
1030 This variable conditionally defines the HAS_FUTIMES symbol, which
1031 indicates to the C program that the futimes() routine is available.
1033 d_gai_strerror (d_gai_strerror.U):
1034 This variable conditionally defines the HAS_GAI_STRERROR symbol
1035 if the gai_strerror() routine is available and can be used to
1036 translate error codes returned by getaddrinfo() into human
1039 d_Gconvert (d_gconvert.U):
1040 This variable holds what Gconvert is defined as to convert
1041 floating point numbers into strings. By default, Configure
1042 sets this macro to use the first of gconvert, gcvt, or sprintf
1043 that pass sprintf-%g-like behavior tests. If perl is using
1044 long doubles, the macro uses the first of the following
1045 functions that pass Configure's tests: qgcvt, sprintf (if
1046 Configure knows how to make sprintf format long doubles--see
1047 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
1048 The gconvert_preference and gconvert_ld_preference variables
1049 can be used to alter Configure's preferences, for doubles and
1050 long doubles, respectively. If present, they contain a
1051 space-separated list of one or more of the above function
1052 names in the order they should be tried.
1054 d_Gconvert may be set to override Configure with a platform-
1055 specific function. If this function expects a double, a
1056 different value may need to be set by the uselongdouble.cbu
1057 call-back unit so that long doubles can be formatted without
1060 d_gdbm_ndbm_h_uses_prototypes (i_ndbm.U):
1061 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1062 which indicates that the gdbm-ndbm.h include file uses real ANSI C
1063 prototypes instead of K&R style function declarations. K&R style
1064 declarations are unsupported in C++, so the include file requires
1065 special handling when using a C++ compiler and this variable is
1066 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1067 to get the same information for alternative ndbm.h include files.
1069 d_gdbmndbm_h_uses_prototypes (i_ndbm.U):
1070 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1071 which indicates that the gdbm/ndbm.h include file uses real ANSI C
1072 prototypes instead of K&R style function declarations. K&R style
1073 declarations are unsupported in C++, so the include file requires
1074 special handling when using a C++ compiler and this variable is
1075 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1076 to get the same information for alternative ndbm.h include files.
1078 d_getaddrinfo (d_getaddrinfo.U):
1079 This variable conditionally defines the HAS_GETADDRINFO symbol,
1080 which indicates to the C program that the getaddrinfo() function
1083 d_getcwd (d_getcwd.U):
1084 This variable conditionally defines the HAS_GETCWD symbol, which
1085 indicates to the C program that the getcwd() routine is available
1086 to get the current working directory.
1088 d_getenv_preserves_other_thread (d_getenv_thread.U):
1089 This variable conditionally defines the GETENV_PRESERVES_OTHER_THREAD
1090 symbol, which indicates to the C program that the getenv() system call
1091 does not zap the static buffer in a different thread.
1093 d_getespwnam (d_getespwnam.U):
1094 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
1095 available to retrieve enhanced (shadow) password entries by name.
1097 d_getfsstat (d_getfsstat.U):
1098 This variable conditionally defines the HAS_GETFSSTAT symbol, which
1099 indicates to the C program that the getfsstat() routine is available.
1101 d_getgrent (d_getgrent.U):
1102 This variable conditionally defines the HAS_GETGRENT symbol, which
1103 indicates to the C program that the getgrent() routine is available
1104 for sequential access of the group database.
1106 d_getgrent_r (d_getgrent_r.U):
1107 This variable conditionally defines the HAS_GETGRENT_R symbol,
1108 which indicates to the C program that the getgrent_r()
1109 routine is available.
1111 d_getgrgid_r (d_getgrgid_r.U):
1112 This variable conditionally defines the HAS_GETGRGID_R symbol,
1113 which indicates to the C program that the getgrgid_r()
1114 routine is available.
1116 d_getgrnam_r (d_getgrnam_r.U):
1117 This variable conditionally defines the HAS_GETGRNAM_R symbol,
1118 which indicates to the C program that the getgrnam_r()
1119 routine is available.
1121 d_getgrps (d_getgrps.U):
1122 This variable conditionally defines the HAS_GETGROUPS symbol, which
1123 indicates to the C program that the getgroups() routine is available
1124 to get the list of process groups.
1126 d_gethbyaddr (d_gethbyad.U):
1127 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
1128 indicates to the C program that the gethostbyaddr() routine is available
1129 to look up hosts by their IP addresses.
1131 d_gethbyname (d_gethbynm.U):
1132 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
1133 indicates to the C program that the gethostbyname() routine is available
1134 to look up host names in some data base or other.
1136 d_gethent (d_gethent.U):
1137 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
1138 available to look up host names in some data base or another.
1140 d_gethname (d_gethname.U):
1141 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
1142 indicates to the C program that the gethostname() routine may be
1143 used to derive the host name.
1145 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
1146 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
1147 which indicates to the C program that the gethostbyaddr_r()
1148 routine is available.
1150 d_gethostbyname_r (d_gethostbyname_r.U):
1151 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
1152 which indicates to the C program that the gethostbyname_r()
1153 routine is available.
1155 d_gethostent_r (d_gethostent_r.U):
1156 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
1157 which indicates to the C program that the gethostent_r()
1158 routine is available.
1160 d_gethostprotos (d_gethostprotos.U):
1161 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
1162 which indicates to the C program that <netdb.h> supplies
1163 prototypes for the various gethost*() functions.
1164 See also netdbtype.U for probing for various netdb types.
1166 d_getitimer (d_getitimer.U):
1167 This variable conditionally defines the HAS_GETITIMER symbol, which
1168 indicates to the C program that the getitimer() routine is available.
1170 d_getlogin (d_getlogin.U):
1171 This variable conditionally defines the HAS_GETLOGIN symbol, which
1172 indicates to the C program that the getlogin() routine is available
1173 to get the login name.
1175 d_getlogin_r (d_getlogin_r.U):
1176 This variable conditionally defines the HAS_GETLOGIN_R symbol,
1177 which indicates to the C program that the getlogin_r()
1178 routine is available.
1180 d_getmnt (d_getmnt.U):
1181 This variable conditionally defines the HAS_GETMNT symbol, which
1182 indicates to the C program that the getmnt() routine is available
1183 to retrieve one or more mount info blocks by filename.
1185 d_getmntent (d_getmntent.U):
1186 This variable conditionally defines the HAS_GETMNTENT symbol, which
1187 indicates to the C program that the getmntent() routine is available
1188 to iterate through mounted files to get their mount info.
1190 d_getnameinfo (d_getnameinfo.U):
1191 This variable conditionally defines the HAS_GETNAMEINFO symbol,
1192 which indicates to the C program that the getnameinfo() function
1195 d_getnbyaddr (d_getnbyad.U):
1196 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
1197 indicates to the C program that the getnetbyaddr() routine is available
1198 to look up networks by their IP addresses.
1200 d_getnbyname (d_getnbynm.U):
1201 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
1202 indicates to the C program that the getnetbyname() routine is available
1203 to look up networks by their names.
1205 d_getnent (d_getnent.U):
1206 This variable conditionally defines HAS_GETNETENT if getnetent() is
1207 available to look up network names in some data base or another.
1209 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
1210 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
1211 which indicates to the C program that the getnetbyaddr_r()
1212 routine is available.
1214 d_getnetbyname_r (d_getnetbyname_r.U):
1215 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
1216 which indicates to the C program that the getnetbyname_r()
1217 routine is available.
1219 d_getnetent_r (d_getnetent_r.U):
1220 This variable conditionally defines the HAS_GETNETENT_R symbol,
1221 which indicates to the C program that the getnetent_r()
1222 routine is available.
1224 d_getnetprotos (d_getnetprotos.U):
1225 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1226 which indicates to the C program that <netdb.h> supplies
1227 prototypes for the various getnet*() functions.
1228 See also netdbtype.U for probing for various netdb types.
1230 d_getpagsz (d_getpagsz.U):
1231 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1232 is available to get the system page size.
1234 d_getpbyname (d_getprotby.U):
1235 This variable conditionally defines the HAS_GETPROTOBYNAME
1236 symbol, which indicates to the C program that the
1237 getprotobyname() routine is available to look up protocols
1240 d_getpbynumber (d_getprotby.U):
1241 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1242 symbol, which indicates to the C program that the
1243 getprotobynumber() routine is available to look up protocols
1246 d_getpent (d_getpent.U):
1247 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1248 available to look up protocols in some data base or another.
1250 d_getpgid (d_getpgid.U):
1251 This variable conditionally defines the HAS_GETPGID symbol, which
1252 indicates to the C program that the getpgid(pid) function
1253 is available to get the process group id.
1255 d_getpgrp (d_getpgrp.U):
1256 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1257 available to get the current process group.
1259 d_getpgrp2 (d_getpgrp2.U):
1260 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1261 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1262 is available to get the current process group.
1264 d_getppid (d_getppid.U):
1265 This variable conditionally defines the HAS_GETPPID symbol, which
1266 indicates to the C program that the getppid() routine is available
1267 to get the parent process ID.
1269 d_getprior (d_getprior.U):
1270 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1271 is available to get a process's priority.
1273 d_getprotobyname_r (d_getprotobyname_r.U):
1274 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1275 which indicates to the C program that the getprotobyname_r()
1276 routine is available.
1278 d_getprotobynumber_r (d_getprotobynumber_r.U):
1279 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1280 which indicates to the C program that the getprotobynumber_r()
1281 routine is available.
1283 d_getprotoent_r (d_getprotoent_r.U):
1284 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1285 which indicates to the C program that the getprotoent_r()
1286 routine is available.
1288 d_getprotoprotos (d_getprotoprotos.U):
1289 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1290 which indicates to the C program that <netdb.h> supplies
1291 prototypes for the various getproto*() functions.
1292 See also netdbtype.U for probing for various netdb types.
1294 d_getprpwnam (d_getprpwnam.U):
1295 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1296 available to retrieve protected (shadow) password entries by name.
1298 d_getpwent (d_getpwent.U):
1299 This variable conditionally defines the HAS_GETPWENT symbol, which
1300 indicates to the C program that the getpwent() routine is available
1301 for sequential access of the passwd database.
1303 d_getpwent_r (d_getpwent_r.U):
1304 This variable conditionally defines the HAS_GETPWENT_R symbol,
1305 which indicates to the C program that the getpwent_r()
1306 routine is available.
1308 d_getpwnam_r (d_getpwnam_r.U):
1309 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1310 which indicates to the C program that the getpwnam_r()
1311 routine is available.
1313 d_getpwuid_r (d_getpwuid_r.U):
1314 This variable conditionally defines the HAS_GETPWUID_R symbol,
1315 which indicates to the C program that the getpwuid_r()
1316 routine is available.
1318 d_getsbyname (d_getsrvby.U):
1319 This variable conditionally defines the HAS_GETSERVBYNAME
1320 symbol, which indicates to the C program that the
1321 getservbyname() routine is available to look up services
1324 d_getsbyport (d_getsrvby.U):
1325 This variable conditionally defines the HAS_GETSERVBYPORT
1326 symbol, which indicates to the C program that the
1327 getservbyport() routine is available to look up services
1330 d_getsent (d_getsent.U):
1331 This variable conditionally defines HAS_GETSERVENT if getservent() is
1332 available to look up network services in some data base or another.
1334 d_getservbyname_r (d_getservbyname_r.U):
1335 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1336 which indicates to the C program that the getservbyname_r()
1337 routine is available.
1339 d_getservbyport_r (d_getservbyport_r.U):
1340 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1341 which indicates to the C program that the getservbyport_r()
1342 routine is available.
1344 d_getservent_r (d_getservent_r.U):
1345 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1346 which indicates to the C program that the getservent_r()
1347 routine is available.
1349 d_getservprotos (d_getservprotos.U):
1350 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1351 which indicates to the C program that <netdb.h> supplies
1352 prototypes for the various getserv*() functions.
1353 See also netdbtype.U for probing for various netdb types.
1355 d_getspnam (d_getspnam.U):
1356 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1357 available to retrieve SysV shadow password entries by name.
1359 d_getspnam_r (d_getspnam_r.U):
1360 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1361 which indicates to the C program that the getspnam_r()
1362 routine is available.
1364 d_gettimeod (d_ftime.U):
1365 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1366 indicates that the gettimeofday() system call exists (to obtain a
1367 sub-second accuracy clock). You should probably include <sys/resource.h>.
1369 d_gmtime64 (d_timefuncs64.U):
1370 This variable conditionally defines the HAS_GMTIME64 symbol, which
1371 indicates to the C program that the gmtime64 () routine is available.
1373 d_gmtime_r (d_gmtime_r.U):
1374 This variable conditionally defines the HAS_GMTIME_R symbol,
1375 which indicates to the C program that the gmtime_r()
1376 routine is available.
1378 d_gnulibc (d_gnulibc.U):
1379 Defined if we're dealing with the GNU C Library.
1381 d_grpasswd (i_grp.U):
1382 This variable conditionally defines GRPASSWD, which indicates
1383 that struct group in <grp.h> contains gr_passwd.
1385 d_has_C_UTF8 (d_setlocale.U):
1386 This variable is set to either "true" or "false" depending on
1387 whether the compilation system supports the C.UTF-8 locale.
1389 d_hasmntopt (d_hasmntopt.U):
1390 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1391 indicates to the C program that the hasmntopt() routine is available
1392 to query the mount options of file systems.
1394 d_htonl (d_htonl.U):
1395 This variable conditionally defines HAS_HTONL if htonl() and its
1396 friends are available to do network order byte swapping.
1398 d_hypot (d_hypot.U):
1399 This variable conditionally defines HAS_HYPOT if hypot is available
1400 for numerically stable hypotenuse function.
1402 d_ilogb (d_ilogb.U):
1403 This variable conditionally defines the HAS_ILOGB symbol, which
1404 indicates to the C program that the ilogb() routine is available
1405 for extracting the exponent of double x as a signed integer.
1407 d_ilogbl (d_ilogbl.U):
1408 This variable conditionally defines the HAS_ILOGBL symbol, which
1409 indicates to the C program that the ilogbl() routine is available
1410 for extracting the exponent of long double x as a signed integer.
1411 If scalbnl is also present we can emulate frexpl.
1413 d_inc_version_list (inc_version_list.U):
1414 This variable conditionally defines PERL_INC_VERSION_LIST.
1415 It is set to undef when PERL_INC_VERSION_LIST is empty.
1417 d_inetaton (d_inetaton.U):
1418 This variable conditionally defines the HAS_INET_ATON symbol, which
1419 indicates to the C program that the inet_aton() function is available
1420 to parse IP address "dotted-quad" strings.
1422 d_inetntop (d_inetntop.U):
1423 This variable conditionally defines the HAS_INETNTOP symbol,
1424 which indicates to the C program that the inet_ntop() function
1427 d_inetpton (d_inetpton.U):
1428 This variable conditionally defines the HAS_INETPTON symbol,
1429 which indicates to the C program that the inet_pton() function
1432 d_int64_t (d_int64_t.U):
1433 This symbol will be defined if the C compiler supports int64_t.
1435 d_ip_mreq (d_socket.U):
1436 This variable conditionally defines the HAS_IP_MREQ symbol, which
1437 indicates the availability of a struct ip_mreq.
1439 d_ip_mreq_source (d_socket.U):
1440 This variable conditionally defines the HAS_IP_MREQ_SOURCE symbol,
1441 which indicates the availability of a struct ip_mreq_source.
1443 d_ipv6_mreq (d_socket.U):
1444 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
1445 indicates the availability of a struct ipv6_mreq.
1447 d_ipv6_mreq_source (d_socket.U):
1448 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE symbol,
1449 which indicates the availability of a struct ipv6_mreq_source.
1451 d_isascii (d_isascii.U):
1452 This variable conditionally defines the HAS_ISASCII constant,
1453 which indicates to the C program that isascii() is available.
1455 d_isblank (d_isblank.U):
1456 This variable conditionally defines the HAS_ISBLANK constant,
1457 which indicates to the C program that isblank() is available.
1459 d_isfinite (d_isfinite.U):
1460 This variable conditionally defines the HAS_ISFINITE symbol, which
1461 indicates to the C program that the isfinite() routine is available.
1463 d_isfinitel (d_isfinitel.U):
1464 This variable conditionally defines the HAS_ISFINITEL symbol, which
1465 indicates to the C program that the isfinitel() routine is available.
1467 d_isinf (d_isinf.U):
1468 This variable conditionally defines the HAS_ISINF symbol, which
1469 indicates to the C program that the isinf() routine is available.
1471 d_isinfl (d_isinfl.U):
1472 This variable conditionally defines the HAS_ISINFL symbol, which
1473 indicates to the C program that the isinfl() routine is available.
1475 d_isless (d_isless.U):
1476 This variable conditionally defines the HAS_ISLESS symbol, which
1477 indicates to the C program that the isless() routine is available.
1479 d_isnan (d_isnan.U):
1480 This variable conditionally defines the HAS_ISNAN symbol, which
1481 indicates to the C program that the isnan() routine is available.
1483 d_isnanl (d_isnanl.U):
1484 This variable conditionally defines the HAS_ISNANL symbol, which
1485 indicates to the C program that the isnanl() routine is available.
1487 d_isnormal (d_isnormal.U):
1488 This variable conditionally defines the HAS_ISNORMAL symbol, which
1489 indicates to the C program that the isnormal() routine is available.
1492 This variable conditionally defines the HAS_J0 symbol, which
1493 indicates to the C program that the j0() routine is available.
1496 This variable conditionally defines the HAS_J0L symbol, which
1497 indicates to the C program that the j0l() routine is available.
1499 d_killpg (d_killpg.U):
1500 This variable conditionally defines the HAS_KILLPG symbol, which
1501 indicates to the C program that the killpg() routine is available
1502 to kill process groups.
1504 d_lc_monetary_2008 (d_lc_monetary_2008.U):
1505 This variable conditionally defines HAS_LC_MONETARY_2008 if libc
1506 has the international currency locale rules from POSIX
1509 d_lchown (d_lchown.U):
1510 This variable conditionally defines the HAS_LCHOWN symbol, which
1511 indicates to the C program that the lchown() routine is available
1512 to operate on a symbolic link (instead of following the link).
1514 d_ldbl_dig (d_ldbl_dig.U):
1515 This variable conditionally defines d_ldbl_dig if this system's
1516 header files provide LDBL_DIG, which is the number of significant
1517 digits in a long double precision number.
1519 d_ldexpl (d_longdbl.U):
1520 This variable conditionally defines the HAS_LDEXPL symbol, which
1521 indicates to the C program that the ldexpl() routine is available.
1523 d_lgamma (d_lgamma.U):
1524 This variable conditionally defines the HAS_LGAMMA symbol, which
1525 indicates to the C program that the lgamma() routine is available
1526 for the log gamma function. See also d_tgamma and d_lgamma_r.
1528 d_lgamma_r (d_lgamma_r.U):
1529 This variable conditionally defines the HAS_LGAMMA_R symbol, which
1530 indicates to the C program that the lgamma_r() routine is available
1531 for the log gamma function, without using the global signgam variable.
1533 d_libm_lib_version (d_libm_lib_version.U):
1534 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1535 which indicates to the C program that math.h defines _LIB_VERSION
1536 being available in libm
1538 d_libname_unique (so.U):
1539 This variable is defined if the target system insists on unique
1540 basenames for shared library files. This is currently true on Android,
1541 false everywhere else we know of.
1542 Defaults to 'undef'.
1545 This variable conditionally defines HAS_LINK if link() is
1546 available to create hard links.
1548 d_linkat (d_fsat.U):
1549 This variable conditionally defines the HAS_LINKAT symbol, which
1550 indicates the POSIX linkat() function is available.
1552 d_llrint (d_llrint.U):
1553 This variable conditionally defines the HAS_LLRINT symbol, which
1554 indicates to the C program that the llrint() routine is available
1555 to return the long long value closest to a double (according
1556 to the current rounding mode).
1558 d_llrintl (d_llrintl.U):
1559 This variable conditionally defines the HAS_LLRINTL symbol, which
1560 indicates to the C program that the llrintl() routine is available
1561 to return the long long value closest to a long double (according
1562 to the current rounding mode).
1564 d_llround (d_llround.U):
1565 This variable conditionally defines the HAS_LLROUND symbol, which
1566 indicates to the C program that the llround() routine is available
1567 to return the long long value nearest to x.
1569 d_llroundl (d_llroundl.U):
1570 This variable conditionally defines the HAS_LLROUNDL symbol, which
1571 indicates to the C program that the llroundl() routine is available
1572 to return the long long value nearest to x away from zero.
1574 d_localeconv_l (d_localeconv_l.U):
1575 This variable conditionally defines the HAS_LOCALECONV_L symbol, which
1576 indicates to the C program that the localeconv_l() routine is available.
1578 d_localtime64 (d_timefuncs64.U):
1579 This variable conditionally defines the HAS_LOCALTIME64 symbol, which
1580 indicates to the C program that the localtime64 () routine is available.
1582 d_localtime_r (d_localtime_r.U):
1583 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1584 which indicates to the C program that the localtime_r()
1585 routine is available.
1587 d_localtime_r_needs_tzset (d_localtime_r.U):
1588 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1589 symbol, which makes us call tzset before localtime_r()
1591 d_locconv (d_locconv.U):
1592 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1593 available for numeric and monetary formatting conventions.
1595 d_lockf (d_lockf.U):
1596 This variable conditionally defines HAS_LOCKF if lockf() is
1597 available to do file locking.
1599 d_log1p (d_log1p.U):
1600 This variable conditionally defines the HAS_LOG1P symbol, which
1601 indicates to the C program that the logp1() routine is available
1602 to compute log(1 + x) for values of x close to zero.
1605 This variable conditionally defines the HAS_LOG2 symbol, which
1606 indicates to the C program that the log2() routine is available
1607 to compute log base two.
1610 This variable conditionally defines the HAS_LOGB symbol, which
1611 indicates to the C program that the logb() routine is available
1612 to extract the exponent of x.
1614 d_long_double_style_ieee (d_longdbl.U):
1615 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE
1616 if the long double is any of the IEEE 754 style long doubles:
1617 LONG_DOUBLE_STYLE_IEEE_STD, LONG_DOUBLE_STYLE_IEEE_EXTENDED,
1618 LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE.
1620 d_long_double_style_ieee_doubledouble (d_longdbl.U):
1621 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE
1622 if the long double is the 128-bit IEEE 754 double-double.
1624 d_long_double_style_ieee_extended (d_longdbl.U):
1625 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_EXTENDED
1626 if the long double is the 80-bit IEEE 754 extended precision.
1627 Note that despite the 'extended' this is less than the 'std',
1628 since this is an extension of the double precision.
1630 d_long_double_style_ieee_std (d_longdbl.U):
1631 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_STD
1632 if the long double is the 128-bit IEEE 754.
1634 d_long_double_style_vax (d_longdbl.U):
1635 This variable conditionally defines LONG_DOUBLE_STYLE_VAX
1636 if the long double is the 128-bit VAX format H.
1638 d_longdbl (d_longdbl.U):
1639 This variable conditionally defines HAS_LONG_DOUBLE if
1640 the long double type is supported.
1642 d_longlong (d_longlong.U):
1643 This variable conditionally defines HAS_LONG_LONG if
1644 the long long type is supported.
1646 d_lrint (d_lrint.U):
1647 This variable conditionally defines the HAS_LRINT symbol, which
1648 indicates to the C program that the lrint() routine is available
1649 to return the integral value closest to a double (according
1650 to the current rounding mode).
1652 d_lrintl (d_lrintl.U):
1653 This variable conditionally defines the HAS_LRINTL symbol, which
1654 indicates to the C program that the lrintl() routine is available
1655 to return the integral value closest to a long double (according
1656 to the current rounding mode).
1658 d_lround (d_lround.U):
1659 This variable conditionally defines the HAS_LROUND symbol, which
1660 indicates to the C program that the lround() routine is available
1661 to return the integral value nearest to x.
1663 d_lroundl (d_lroundl.U):
1664 This variable conditionally defines the HAS_LROUNDL symbol, which
1665 indicates to the C program that the lroundl() routine is available
1666 to return the integral value nearest to x away from zero.
1668 d_lseekproto (d_lseekproto.U):
1669 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1670 which indicates to the C program that the system provides
1671 a prototype for the lseek() function. Otherwise, it is
1672 up to the program to supply one.
1674 d_lstat (d_lstat.U):
1675 This variable conditionally defines HAS_LSTAT if lstat() is
1676 available to do file stats on symbolic links.
1678 d_madvise (d_madvise.U):
1679 This variable conditionally defines HAS_MADVISE if madvise() is
1680 available to map a file into memory.
1682 d_malloc_good_size (d_malloc_size.U):
1683 This symbol, if defined, indicates that the malloc_good_size
1684 routine is available for use.
1686 d_malloc_size (d_malloc_size.U):
1687 This symbol, if defined, indicates that the malloc_size
1688 routine is available for use.
1690 d_malloc_usable_size (d_malloc_size.U):
1691 This symbol, if defined, indicates that the malloc_usable_size
1692 routine is available for use.
1694 d_mblen (d_mblen.U):
1695 This variable conditionally defines the HAS_MBLEN symbol, which
1696 indicates to the C program that the mblen() routine is available
1697 to find the number of bytes in a multibyte character.
1699 d_mbrlen (d_mbrlen.U):
1700 This variable conditionally defines the HAS_MBRLEN symbol if the
1701 mbrlen() routine is available to be used to get the length of
1702 multi-byte character strings.
1704 d_mbrtowc (d_mbrtowc.U):
1705 This variable conditionally defines the HAS_MBRTOWC symbol if the
1706 mbrtowc() routine is available to be used to convert a multi-byte
1707 character into a wide character.
1709 d_mbstowcs (d_mbstowcs.U):
1710 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1711 indicates to the C program that the mbstowcs() routine is available
1712 to convert a multibyte string into a wide character string.
1714 d_mbtowc (d_mbtowc.U):
1715 This variable conditionally defines the HAS_MBTOWC symbol, which
1716 indicates to the C program that the mbtowc() routine is available
1717 to convert multibyte to a wide character.
1719 d_memmem (d_memmem.U):
1720 This variable conditionally defines the HAS_MEMMEM symbol, which
1721 indicates to the C program that the memmem() routine is available
1722 to return a pointer to the start of the first occurrence of a
1723 substring in a memory area (or NULL if not found).
1725 d_memrchr (d_memrchr.U):
1726 This variable conditionally defines the HAS_MEMRCHR symbol, which
1727 indicates to the C program that the memrchr() routine is available
1728 to return a pointer to the last occurrence of a byte in a memory
1729 area (or NULL if not found).
1731 d_mkdir (d_mkdir.U):
1732 This variable conditionally defines the HAS_MKDIR symbol, which
1733 indicates to the C program that the mkdir() routine is available
1734 to create directories..
1736 d_mkdtemp (d_mkdtemp.U):
1737 This variable conditionally defines the HAS_MKDTEMP symbol, which
1738 indicates to the C program that the mkdtemp() routine is available
1739 to exclusively create a uniquely named temporary directory.
1741 d_mkfifo (d_mkfifo.U):
1742 This variable conditionally defines the HAS_MKFIFO symbol, which
1743 indicates to the C program that the mkfifo() routine is available.
1745 d_mkostemp (d_mkostemp.U):
1746 This variable conditionally defines HAS_MKOSTEMP if mkostemp() is
1747 available to exclusively create and open a uniquely named (with a
1748 suffix) temporary file.
1750 d_mkstemp (d_mkstemp.U):
1751 This variable conditionally defines the HAS_MKSTEMP symbol, which
1752 indicates to the C program that the mkstemp() routine is available
1753 to exclusively create and open a uniquely named temporary file.
1755 d_mkstemps (d_mkstemps.U):
1756 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1757 indicates to the C program that the mkstemps() routine is available
1758 to exclusively create and open a uniquely named (with a suffix)
1761 d_mktime (d_mktime.U):
1762 This variable conditionally defines the HAS_MKTIME symbol, which
1763 indicates to the C program that the mktime() routine is available.
1765 d_mktime64 (d_timefuncs64.U):
1766 This variable conditionally defines the HAS_MKTIME64 symbol, which
1767 indicates to the C program that the mktime64 () routine is available.
1770 This variable conditionally defines HAS_MMAP if mmap() is
1771 available to map a file into memory.
1773 d_modfl (d_modfl.U):
1774 This variable conditionally defines the HAS_MODFL symbol, which
1775 indicates to the C program that the modfl() routine is available.
1777 d_modflproto (d_modfl.U):
1778 This symbol, if defined, indicates that the system provides
1779 a prototype for the modfl() function. Otherwise, it is up
1780 to the program to supply one. C99 says it should be
1781 long double modfl(long double, long double *);
1783 d_mprotect (d_mprotect.U):
1784 This variable conditionally defines HAS_MPROTECT if mprotect() is
1785 available to modify the access protection of a memory mapped file.
1788 This variable conditionally defines the HAS_MSG symbol, which
1789 indicates that the entire msg*(2) library is present.
1791 d_msg_ctrunc (d_socket.U):
1792 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1793 which indicates that the MSG_CTRUNC is available. #ifdef is
1794 not enough because it may be an enum, glibc has been known to do this.
1796 d_msg_dontroute (d_socket.U):
1797 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1798 which indicates that the MSG_DONTROUTE is available. #ifdef is
1799 not enough because it may be an enum, glibc has been known to do this.
1801 d_msg_oob (d_socket.U):
1802 This variable conditionally defines the HAS_MSG_OOB symbol,
1803 which indicates that the MSG_OOB is available. #ifdef is
1804 not enough because it may be an enum, glibc has been known to do this.
1806 d_msg_peek (d_socket.U):
1807 This variable conditionally defines the HAS_MSG_PEEK symbol,
1808 which indicates that the MSG_PEEK is available. #ifdef is
1809 not enough because it may be an enum, glibc has been known to do this.
1811 d_msg_proxy (d_socket.U):
1812 This variable conditionally defines the HAS_MSG_PROXY symbol,
1813 which indicates that the MSG_PROXY is available. #ifdef is
1814 not enough because it may be an enum, glibc has been known to do this.
1816 d_msgctl (d_msgctl.U):
1817 This variable conditionally defines the HAS_MSGCTL symbol, which
1818 indicates to the C program that the msgctl() routine is available.
1820 d_msgget (d_msgget.U):
1821 This variable conditionally defines the HAS_MSGGET symbol, which
1822 indicates to the C program that the msgget() routine is available.
1824 d_msghdr_s (d_msghdr_s.U):
1825 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1826 which indicates that the struct msghdr is supported.
1828 d_msgrcv (d_msgrcv.U):
1829 This variable conditionally defines the HAS_MSGRCV symbol, which
1830 indicates to the C program that the msgrcv() routine is available.
1832 d_msgsnd (d_msgsnd.U):
1833 This variable conditionally defines the HAS_MSGSND symbol, which
1834 indicates to the C program that the msgsnd() routine is available.
1836 d_msync (d_msync.U):
1837 This variable conditionally defines HAS_MSYNC if msync() is
1838 available to synchronize a mapped file.
1840 d_munmap (d_munmap.U):
1841 This variable conditionally defines HAS_MUNMAP if munmap() is
1842 available to unmap a region mapped by mmap().
1844 d_mymalloc (mallocsrc.U):
1845 This variable conditionally defines MYMALLOC in case other parts
1846 of the source want to take special action if MYMALLOC is used.
1847 This may include different sorts of profiling or error detection.
1850 This variable conditionally defines HAS_NAN if nan() is
1851 available to generate NaN.
1853 d_nanosleep (d_nanosleep.U):
1854 This variable conditionally defines HAS_NANOSLEEP
1855 if nanosleep() is available to sleep with 1E-9 sec accuracy.
1858 This variable conditionally defines the HAS_NDBM symbol, which
1859 indicates that both the ndbm.h include file and an appropriate ndbm
1860 library exist. Consult the different i_*ndbm variables
1861 to find out the actual include location. Sometimes, a system has the
1862 header file but not the library. This variable will only be set if
1863 the system has both.
1865 d_ndbm_h_uses_prototypes (i_ndbm.U):
1866 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1867 which indicates that the ndbm.h include file uses real ANSI C
1868 prototypes instead of K&R style function declarations. K&R style
1869 declarations are unsupported in C++, so the include file requires
1870 special handling when using a C++ compiler and this variable is
1871 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1872 to get the same information for alternative ndbm.h include files.
1874 d_nearbyint (d_nearbyint.U):
1875 This variable conditionally defines HAS_NEARBYINT if nearbyint()
1876 is available to return the integral value closest to (according to
1877 the current rounding mode) to x.
1879 d_newlocale (d_newlocale.U):
1880 This variable conditionally defines the HAS_NEWLOCALE symbol, which
1881 indicates to the C program that the newlocale() routine is available
1882 to return a new locale object or modify an existing locale object.
1884 d_nextafter (d_nextafter.U):
1885 This variable conditionally defines HAS_NEXTAFTER if nextafter()
1886 is available to return the next machine representable double from
1889 d_nexttoward (d_nexttoward.U):
1890 This variable conditionally defines HAS_NEXTTOWARD if nexttoward()
1891 is available to return the next machine representable long double from
1895 This variable conditionally defines the HAS_NICE symbol, which
1896 indicates to the C program that the nice() routine is available.
1898 d_nl_langinfo (d_nl_langinfo.U):
1899 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1900 indicates to the C program that the nl_langinfo() routine is available.
1902 d_nl_langinfo_l (d_nl_langinfo_l.U):
1903 This variable contains the eventual value of the
1904 HAS_NL_LANGINFO_L symbol, which indicates if the
1905 nl_langinfo_l() function exists.
1907 d_non_int_bitfields (d_bitfield.U):
1908 This variable conditionally defines HAS_NON_INT_BITFIELDS
1909 which indicates that the C compiler accepts struct bitfields of sizes
1910 that aren't 'int' or 'unsigned int'
1912 d_nv_preserves_uv (perlxv.U):
1913 This variable indicates whether a variable of type nvtype
1914 can preserve all the bits a variable of type uvtype.
1916 d_nv_zero_is_allbits_zero (perlxv.U):
1917 This variable indicates whether a variable of type nvtype
1918 stores 0.0 in memory as all bits zero.
1920 d_off64_t (d_off64_t.U):
1921 This symbol will be defined if the C compiler supports off64_t.
1923 d_old_pthread_create_joinable (d_pthrattrj.U):
1924 This variable conditionally defines pthread_create_joinable.
1925 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1927 d_oldpthreads (usethreads.U):
1928 This variable conditionally defines the OLD_PTHREADS_API symbol,
1929 and indicates that Perl should be built to use the old
1930 draft POSIX threads API. This is only potentially meaningful if
1933 d_oldsock (d_socket.U):
1934 This variable conditionally defines the OLDSOCKET symbol, which
1935 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1937 d_open3 (d_open3.U):
1938 This variable conditionally defines the HAS_OPEN3 manifest constant,
1939 which indicates to the C program that the 3 argument version of
1940 the open(2) function is available.
1942 d_openat (d_fsat.U):
1943 This variable conditionally defines the HAS_OPENAT symbol, which
1944 indicates the POSIX openat() function is available.
1946 d_pathconf (d_pathconf.U):
1947 This variable conditionally defines the HAS_PATHCONF symbol, which
1948 indicates to the C program that the pathconf() routine is available
1949 to determine file-system related limits and options associated
1950 with a given filename.
1952 d_pause (d_pause.U):
1953 This variable conditionally defines the HAS_PAUSE symbol, which
1954 indicates to the C program that the pause() routine is available
1955 to suspend a process until a signal is received.
1957 d_perl_otherlibdirs (otherlibdirs.U):
1958 This variable conditionally defines PERL_OTHERLIBDIRS, which
1959 contains a colon-separated set of paths for the perl binary to
1960 include in @INC. See also otherlibdirs.
1962 d_phostname (d_gethname.U):
1963 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1964 contains the shell command which, when fed to popen(), may be
1965 used to derive the host name.
1968 This variable conditionally defines the HAS_PIPE symbol, which
1969 indicates to the C program that the pipe() routine is available
1970 to create an inter-process channel.
1972 d_pipe2 (d_pipe2.U):
1973 This variable conditionally defines the HAS_PIPE2 symbol, which
1974 indicates to the C program that the pipe2() routine is available
1975 to create an inter-process channel.
1978 This variable conditionally defines the HAS_POLL symbol, which
1979 indicates to the C program that the poll() routine is available
1980 to poll active file descriptors.
1982 d_portable (d_portable.U):
1983 This variable conditionally defines the PORTABLE symbol, which
1984 indicates to the C program that it should not assume that it is
1985 running on the machine it was compiled on.
1987 d_prctl (d_prctl.U):
1988 This variable conditionally defines the HAS_PRCTL symbol, which
1989 indicates to the C program that the prctl() routine is available.
1990 Note that there are at least two prctl variants: Linux and Irix.
1991 While they are somewhat similar, they are incompatible.
1993 d_prctl_set_name (d_prctl.U):
1994 This variable conditionally defines the HAS_PRCTL_SET_NAME symbol,
1995 which indicates to the C program that the prctl() routine supports
1996 the PR_SET_NAME option.
1998 d_PRId64 (quadfio.U):
1999 This variable conditionally defines the PERL_PRId64 symbol, which
2000 indicates that stdio has a symbol to print 64-bit decimal numbers.
2002 d_PRIeldbl (longdblfio.U):
2003 This variable conditionally defines the PERL_PRIfldbl symbol, which
2004 indicates that stdio has a symbol to print long doubles.
2006 d_PRIEUldbl (longdblfio.U):
2007 This variable conditionally defines the PERL_PRIfldbl symbol, which
2008 indicates that stdio has a symbol to print long doubles.
2009 The 'U' in the name is to separate this from d_PRIeldbl so that even
2010 case-blind systems can see the difference.
2012 d_PRIfldbl (longdblfio.U):
2013 This variable conditionally defines the PERL_PRIfldbl symbol, which
2014 indicates that stdio has a symbol to print long doubles.
2016 d_PRIFUldbl (longdblfio.U):
2017 This variable conditionally defines the PERL_PRIfldbl symbol, which
2018 indicates that stdio has a symbol to print long doubles.
2019 The 'U' in the name is to separate this from d_PRIfldbl so that even
2020 case-blind systems can see the difference.
2022 d_PRIgldbl (longdblfio.U):
2023 This variable conditionally defines the PERL_PRIfldbl symbol, which
2024 indicates that stdio has a symbol to print long doubles.
2026 d_PRIGUldbl (longdblfio.U):
2027 This variable conditionally defines the PERL_PRIfldbl symbol, which
2028 indicates that stdio has a symbol to print long doubles.
2029 The 'U' in the name is to separate this from d_PRIgldbl so that even
2030 case-blind systems can see the difference.
2032 d_PRIi64 (quadfio.U):
2033 This variable conditionally defines the PERL_PRIi64 symbol, which
2034 indicates that stdio has a symbol to print 64-bit decimal numbers.
2036 d_printf_format_null (d_attribut.U):
2037 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
2038 indicates the C compiler allows printf-like formats to be null.
2040 d_PRIo64 (quadfio.U):
2041 This variable conditionally defines the PERL_PRIo64 symbol, which
2042 indicates that stdio has a symbol to print 64-bit octal numbers.
2044 d_PRIu64 (quadfio.U):
2045 This variable conditionally defines the PERL_PRIu64 symbol, which
2046 indicates that stdio has a symbol to print 64-bit unsigned decimal
2049 d_PRIx64 (quadfio.U):
2050 This variable conditionally defines the PERL_PRIx64 symbol, which
2051 indicates that stdio has a symbol to print 64-bit hexadecimal numbers.
2053 d_PRIXU64 (quadfio.U):
2054 This variable conditionally defines the PERL_PRIXU64 symbol, which
2055 indicates that stdio has a symbol to print 64-bit hExADECimAl numbers.
2056 The 'U' in the name is to separate this from d_PRIx64 so that even
2057 case-blind systems can see the difference.
2059 d_procselfexe (d_procselfexe.U):
2060 Defined if $procselfexe is symlink to the absolute
2061 pathname of the executing program.
2063 d_pseudofork (d_vfork.U):
2064 This variable conditionally defines the HAS_PSEUDOFORK symbol,
2065 which indicates that an emulation of the fork routine is available.
2067 d_pthread_atfork (d_pthread_atfork.U):
2068 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
2069 which indicates to the C program that the pthread_atfork()
2070 routine is available.
2072 d_pthread_attr_setscope (d_pthread_attr_ss.U):
2073 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
2074 pthread_attr_setscope() is available to set the contention scope
2075 attribute of a thread attribute object.
2077 d_pthread_yield (d_pthread_y.U):
2078 This variable conditionally defines the HAS_PTHREAD_YIELD
2079 symbol if the pthread_yield routine is available to yield
2080 the execution of the current thread.
2082 d_ptrdiff_t (d_ptrdiff_t.U):
2083 This symbol will be defined if the C compiler supports ptrdiff_t.
2086 This variable conditionally defines PWAGE, which indicates
2087 that struct passwd contains pw_age.
2089 d_pwchange (i_pwd.U):
2090 This variable conditionally defines PWCHANGE, which indicates
2091 that struct passwd contains pw_change.
2093 d_pwclass (i_pwd.U):
2094 This variable conditionally defines PWCLASS, which indicates
2095 that struct passwd contains pw_class.
2097 d_pwcomment (i_pwd.U):
2098 This variable conditionally defines PWCOMMENT, which indicates
2099 that struct passwd contains pw_comment.
2101 d_pwexpire (i_pwd.U):
2102 This variable conditionally defines PWEXPIRE, which indicates
2103 that struct passwd contains pw_expire.
2105 d_pwgecos (i_pwd.U):
2106 This variable conditionally defines PWGECOS, which indicates
2107 that struct passwd contains pw_gecos.
2109 d_pwpasswd (i_pwd.U):
2110 This variable conditionally defines PWPASSWD, which indicates
2111 that struct passwd contains pw_passwd.
2113 d_pwquota (i_pwd.U):
2114 This variable conditionally defines PWQUOTA, which indicates
2115 that struct passwd contains pw_quota.
2117 d_qgcvt (d_qgcvt.U):
2118 This variable conditionally defines the HAS_QGCVT symbol, which
2119 indicates to the C program that the qgcvt() routine is available.
2121 d_quad (quadtype.U):
2122 This variable, if defined, tells that there's a 64-bit integer type,
2125 d_querylocale (d_newlocale.U):
2126 This variable conditionally defines the HAS_QUERYLOCALE symbol, which
2127 indicates to the C program that the querylocale() routine is available
2128 to return the name of the locale for a category mask.
2130 d_random_r (d_random_r.U):
2131 This variable conditionally defines the HAS_RANDOM_R symbol,
2132 which indicates to the C program that the random_r()
2133 routine is available.
2135 d_re_comp (d_regcmp.U):
2136 This variable conditionally defines the HAS_RECOMP symbol, which
2137 indicates to the C program that the re_comp() routine is available
2138 for regular pattern matching (usually on BSD). If so, it is likely that
2141 d_readdir (d_readdir.U):
2142 This variable conditionally defines HAS_READDIR if readdir() is
2143 available to read directory entries.
2145 d_readdir64_r (d_readdir64_r.U):
2146 This variable conditionally defines the HAS_READDIR64_R symbol,
2147 which indicates to the C program that the readdir64_r()
2148 routine is available.
2150 d_readdir_r (d_readdir_r.U):
2151 This variable conditionally defines the HAS_READDIR_R symbol,
2152 which indicates to the C program that the readdir_r()
2153 routine is available.
2155 d_readlink (d_readlink.U):
2156 This variable conditionally defines the HAS_READLINK symbol, which
2157 indicates to the C program that the readlink() routine is available
2158 to read the value of a symbolic link.
2160 d_readv (d_readv.U):
2161 This variable conditionally defines the HAS_READV symbol, which
2162 indicates to the C program that the readv() routine is available.
2164 d_recvmsg (d_recvmsg.U):
2165 This variable conditionally defines the HAS_RECVMSG symbol, which
2166 indicates to the C program that the recvmsg() routine is available.
2168 d_regcmp (d_regcmp.U):
2169 This variable conditionally defines the HAS_REGCMP symbol, which
2170 indicates to the C program that the regcmp() routine is available
2171 for regular pattern matching (usually on System V).
2173 d_regcomp (d_regcmp.U):
2174 This variable conditionally defines the HAS_REGCOMP symbol, which
2175 indicates to the C program that the regcomp() routine is available
2176 for regular pattern matching (usually on POSIX.2 conforming systems).
2178 d_remainder (d_remainder.U):
2179 This variable conditionally defines the HAS_REMAINDER symbol, which
2180 indicates to the C program that the remainder() routine is available.
2182 d_remquo (d_remquo.U):
2183 This variable conditionally defines the HAS_REMQUO symbol, which
2184 indicates to the C program that the remquo() routine is available.
2186 d_rename (d_rename.U):
2187 This variable conditionally defines the HAS_RENAME symbol, which
2188 indicates to the C program that the rename() routine is available
2191 d_renameat (d_fsat.U):
2192 This variable conditionally defines the HAS_RENAMEAT symbol, which
2193 indicates the POSIX renameat() function is available.
2195 d_rewinddir (d_readdir.U):
2196 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
2200 This variable conditionally defines the HAS_RINT symbol, which
2201 indicates to the C program that the rint() routine is available.
2203 d_rmdir (d_rmdir.U):
2204 This variable conditionally defines HAS_RMDIR if rmdir() is
2205 available to remove directories.
2207 d_round (d_round.U):
2208 This variable conditionally defines the HAS_ROUND symbol, which
2209 indicates to the C program that the round() routine is available.
2211 d_sbrkproto (d_sbrkproto.U):
2212 This variable conditionally defines the HAS_SBRK_PROTO symbol,
2213 which indicates to the C program that the system provides
2214 a prototype for the sbrk() function. Otherwise, it is
2215 up to the program to supply one.
2217 d_scalbn (d_scalbn.U):
2218 This variable conditionally defines the HAS_SCALBN symbol, which
2219 indicates to the C program that the scalbn() routine is available.
2221 d_scalbnl (d_scalbnl.U):
2222 This variable conditionally defines the HAS_SCALBNL symbol, which
2223 indicates to the C program that the scalbnl() routine is available.
2224 If ilogbl is also present we can emulate frexpl.
2226 d_sched_yield (d_pthread_y.U):
2227 This variable conditionally defines the HAS_SCHED_YIELD
2228 symbol if the sched_yield routine is available to yield
2229 the execution of the current thread.
2231 d_scm_rights (d_socket.U):
2232 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
2233 which indicates that the SCM_RIGHTS is available. #ifdef is
2234 not enough because it may be an enum, glibc has been known to do this.
2236 d_SCNfldbl (longdblfio.U):
2237 This variable conditionally defines the PERL_PRIfldbl symbol, which
2238 indicates that stdio has a symbol to scan long doubles.
2240 d_seekdir (d_readdir.U):
2241 This variable conditionally defines HAS_SEEKDIR if seekdir() is
2244 d_select (d_select.U):
2245 This variable conditionally defines HAS_SELECT if select() is
2246 available to select active file descriptors. A <sys/time.h>
2247 inclusion may be necessary for the timeout field.
2250 This variable conditionally defines the HAS_SEM symbol, which
2251 indicates that the entire sem*(2) library is present.
2253 d_semctl (d_semctl.U):
2254 This variable conditionally defines the HAS_SEMCTL symbol, which
2255 indicates to the C program that the semctl() routine is available.
2257 d_semctl_semid_ds (d_union_semun.U):
2258 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
2259 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
2261 d_semctl_semun (d_union_semun.U):
2262 This variable conditionally defines USE_SEMCTL_SEMUN, which
2263 indicates that union semun is to be used for semctl IPC_STAT.
2265 d_semget (d_semget.U):
2266 This variable conditionally defines the HAS_SEMGET symbol, which
2267 indicates to the C program that the semget() routine is available.
2269 d_semop (d_semop.U):
2270 This variable conditionally defines the HAS_SEMOP symbol, which
2271 indicates to the C program that the semop() routine is available.
2273 d_sendmsg (d_sendmsg.U):
2274 This variable conditionally defines the HAS_SENDMSG symbol, which
2275 indicates to the C program that the sendmsg() routine is available.
2277 d_setegid (d_setegid.U):
2278 This variable conditionally defines the HAS_SETEGID symbol, which
2279 indicates to the C program that the setegid() routine is available
2280 to change the effective gid of the current program.
2282 d_seteuid (d_seteuid.U):
2283 This variable conditionally defines the HAS_SETEUID symbol, which
2284 indicates to the C program that the seteuid() routine is available
2285 to change the effective uid of the current program.
2287 d_setgrent (d_setgrent.U):
2288 This variable conditionally defines the HAS_SETGRENT symbol, which
2289 indicates to the C program that the setgrent() routine is available
2290 for initializing sequential access to the group database.
2292 d_setgrent_r (d_setgrent_r.U):
2293 This variable conditionally defines the HAS_SETGRENT_R symbol,
2294 which indicates to the C program that the setgrent_r()
2295 routine is available.
2297 d_setgrps (d_setgrps.U):
2298 This variable conditionally defines the HAS_SETGROUPS symbol, which
2299 indicates to the C program that the setgroups() routine is available
2300 to set the list of process groups.
2302 d_sethent (d_sethent.U):
2303 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
2306 d_sethostent_r (d_sethostent_r.U):
2307 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
2308 which indicates to the C program that the sethostent_r()
2309 routine is available.
2311 d_setitimer (d_setitimer.U):
2312 This variable conditionally defines the HAS_SETITIMER symbol, which
2313 indicates to the C program that the setitimer() routine is available.
2315 d_setlinebuf (d_setlnbuf.U):
2316 This variable conditionally defines the HAS_SETLINEBUF symbol, which
2317 indicates to the C program that the setlinebuf() routine is available
2318 to change stderr or stdout from block-buffered or unbuffered to a
2321 d_setlocale (d_setlocale.U):
2322 This variable conditionally defines HAS_SETLOCALE if setlocale() is
2323 available to handle locale-specific ctype implementations.
2325 d_setlocale_accepts_any_locale_name (d_setlocale.U):
2326 This variable conditionally defines SETLOCALE_ACCEPTS_ANY_LOCALE_NAME
2327 if setlocale() accepts any locale name.
2329 d_setlocale_r (d_setlocale_r.U):
2330 This variable conditionally defines the HAS_SETLOCALE_R symbol,
2331 which indicates to the C program that the setlocale_r()
2332 routine is available.
2334 d_setnent (d_setnent.U):
2335 This variable conditionally defines HAS_SETNETENT if setnetent() is
2338 d_setnetent_r (d_setnetent_r.U):
2339 This variable conditionally defines the HAS_SETNETENT_R symbol,
2340 which indicates to the C program that the setnetent_r()
2341 routine is available.
2343 d_setpent (d_setpent.U):
2344 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
2347 d_setpgid (d_setpgid.U):
2348 This variable conditionally defines the HAS_SETPGID symbol if the
2349 setpgid(pid, gpid) function is available to set process group ID.
2351 d_setpgrp (d_setpgrp.U):
2352 This variable conditionally defines HAS_SETPGRP if setpgrp() is
2353 available to set the current process group.
2355 d_setpgrp2 (d_setpgrp2.U):
2356 This variable conditionally defines the HAS_SETPGRP2 symbol, which
2357 indicates to the C program that the setpgrp2() (as in DG/UX) routine
2358 is available to set the current process group.
2360 d_setprior (d_setprior.U):
2361 This variable conditionally defines HAS_SETPRIORITY if setpriority()
2362 is available to set a process's priority.
2364 d_setproctitle (d_setproctitle.U):
2365 This variable conditionally defines the HAS_SETPROCTITLE symbol,
2366 which indicates to the C program that the setproctitle() routine
2369 d_setprotoent_r (d_setprotoent_r.U):
2370 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
2371 which indicates to the C program that the setprotoent_r()
2372 routine is available.
2374 d_setpwent (d_setpwent.U):
2375 This variable conditionally defines the HAS_SETPWENT symbol, which
2376 indicates to the C program that the setpwent() routine is available
2377 for initializing sequential access to the passwd database.
2379 d_setpwent_r (d_setpwent_r.U):
2380 This variable conditionally defines the HAS_SETPWENT_R symbol,
2381 which indicates to the C program that the setpwent_r()
2382 routine is available.
2384 d_setregid (d_setregid.U):
2385 This variable conditionally defines HAS_SETREGID if setregid() is
2386 available to change the real and effective gid of the current
2389 d_setresgid (d_setregid.U):
2390 This variable conditionally defines HAS_SETRESGID if setresgid() is
2391 available to change the real, effective and saved gid of the current
2394 d_setresuid (d_setreuid.U):
2395 This variable conditionally defines HAS_SETREUID if setresuid() is
2396 available to change the real, effective and saved uid of the current
2399 d_setreuid (d_setreuid.U):
2400 This variable conditionally defines HAS_SETREUID if setreuid() is
2401 available to change the real and effective uid of the current
2404 d_setrgid (d_setrgid.U):
2405 This variable conditionally defines the HAS_SETRGID symbol, which
2406 indicates to the C program that the setrgid() routine is available
2407 to change the real gid of the current program.
2409 d_setruid (d_setruid.U):
2410 This variable conditionally defines the HAS_SETRUID symbol, which
2411 indicates to the C program that the setruid() routine is available
2412 to change the real uid of the current program.
2414 d_setsent (d_setsent.U):
2415 This variable conditionally defines HAS_SETSERVENT if setservent() is
2418 d_setservent_r (d_setservent_r.U):
2419 This variable conditionally defines the HAS_SETSERVENT_R symbol,
2420 which indicates to the C program that the setservent_r()
2421 routine is available.
2423 d_setsid (d_setsid.U):
2424 This variable conditionally defines HAS_SETSID if setsid() is
2425 available to set the process group ID.
2427 d_setvbuf (d_setvbuf.U):
2428 This variable conditionally defines the HAS_SETVBUF symbol, which
2429 indicates to the C program that the setvbuf() routine is available
2430 to change buffering on an open stdio stream.
2433 This variable conditionally defines the HAS_SHM symbol, which
2434 indicates that the entire shm*(2) library is present.
2436 d_shmat (d_shmat.U):
2437 This variable conditionally defines the HAS_SHMAT symbol, which
2438 indicates to the C program that the shmat() routine is available.
2440 d_shmatprototype (d_shmat.U):
2441 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
2442 symbol, which indicates that sys/shm.h has a prototype for
2445 d_shmctl (d_shmctl.U):
2446 This variable conditionally defines the HAS_SHMCTL symbol, which
2447 indicates to the C program that the shmctl() routine is available.
2449 d_shmdt (d_shmdt.U):
2450 This variable conditionally defines the HAS_SHMDT symbol, which
2451 indicates to the C program that the shmdt() routine is available.
2453 d_shmget (d_shmget.U):
2454 This variable conditionally defines the HAS_SHMGET symbol, which
2455 indicates to the C program that the shmget() routine is available.
2457 d_sigaction (d_sigaction.U):
2458 This variable conditionally defines the HAS_SIGACTION symbol, which
2459 indicates that the Vr4 sigaction() routine is available.
2461 d_siginfo_si_addr (d_siginfo_si.U):
2462 This variable conditionally defines the HAS_SIGINFO_SI_ADDR symbol,
2463 which indicates that the siginfo_t struct has the si_addr member.
2465 d_siginfo_si_band (d_siginfo_si.U):
2466 This variable conditionally defines the HAS_SIGINFO_SI_BAND symbol,
2467 which indicates that the siginfo_t struct has the si_band member.
2469 d_siginfo_si_errno (d_siginfo_si.U):
2470 This variable conditionally defines the HAS_SIGINFO_SI_ERRNO symbol,
2471 which indicates that the siginfo_t struct has the si_errno member.
2473 d_siginfo_si_fd (d_siginfo_si.U):
2474 This variable conditionally defines the HAS_SIGINFO_SI_FD symbol,
2475 which indicates that the siginfo_t struct has the si_fd member.
2477 d_siginfo_si_pid (d_siginfo_si.U):
2478 This variable conditionally defines the HAS_SIGINFO_SI_PID symbol,
2479 which indicates that the siginfo_t struct has the si_pid member.
2481 d_siginfo_si_status (d_siginfo_si.U):
2482 This variable conditionally defines the HAS_SIGINFO_SI_STATUS symbol,
2483 which indicates that the siginfo_t struct has the si_status member.
2485 d_siginfo_si_uid (d_siginfo_si.U):
2486 This variable conditionally defines the HAS_SIGINFO_SI_UID symbol,
2487 which indicates that the siginfo_t struct has the si_uid member.
2489 d_siginfo_si_value (d_siginfo_si.U):
2490 This variable conditionally defines the HAS_SIGINFO_SI_VALUE symbol,
2491 which indicates that the siginfo_t struct has the si_value member.
2493 d_signbit (d_signbit.U):
2494 This variable conditionally defines the HAS_SIGNBIT symbol, which
2495 indicates to the C program that the signbit() routine is available
2496 and safe to use with perl's intern NV type.
2498 d_sigprocmask (d_sigprocmask.U):
2499 This variable conditionally defines HAS_SIGPROCMASK
2500 if sigprocmask() is available to examine or change the signal mask
2501 of the calling process.
2503 d_sigsetjmp (d_sigsetjmp.U):
2504 This variable conditionally defines the HAS_SIGSETJMP symbol,
2505 which indicates that the sigsetjmp() routine is available to
2506 call setjmp() and optionally save the process's signal mask.
2508 d_sin6_scope_id (d_socket.U):
2509 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol, which
2510 indicates that a struct sockaddr_in6 structure has the sin6_scope_id
2513 d_sitearch (sitearch.U):
2514 This variable conditionally defines SITEARCH to hold the pathname
2515 of architecture-dependent library files for $package. If
2516 $sitearch is the same as $archlib, then this is set to undef.
2518 d_snprintf (d_snprintf.U):
2519 This variable conditionally defines the HAS_SNPRINTF symbol, which
2520 indicates to the C program that the snprintf () library function
2523 d_sockaddr_in6 (d_socket.U):
2524 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol, which
2525 indicates the availability of a struct sockaddr_in6.
2527 d_sockaddr_sa_len (d_socket.U):
2528 This variable conditionally defines the HAS_SOCKADDR_SA_LEN symbol,
2529 which indicates that a struct sockaddr structure has the sa_len
2532 d_sockaddr_storage (d_socket.U):
2533 This variable conditionally defines the HAS_SOCKADDR_STORAGE symbol,
2534 which indicates the availability of a struct sockaddr_storage.
2536 d_sockatmark (d_sockatmark.U):
2537 This variable conditionally defines the HAS_SOCKATMARK symbol, which
2538 indicates to the C program that the sockatmark() routine is available.
2540 d_sockatmarkproto (d_sockatmarkproto.U):
2541 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
2542 which indicates to the C program that the system provides
2543 a prototype for the sockatmark() function. Otherwise, it is
2544 up to the program to supply one.
2546 d_socket (d_socket.U):
2547 This variable conditionally defines HAS_SOCKET, which indicates
2548 that the BSD socket interface is supported.
2550 d_socklen_t (d_socklen_t.U):
2551 This symbol will be defined if the C compiler supports socklen_t.
2553 d_sockpair (d_socket.U):
2554 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
2555 indicates that the BSD socketpair() is supported.
2557 d_socks5_init (d_socks5_init.U):
2558 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
2559 indicates to the C program that the socks5_init() routine is available.
2561 d_sqrtl (d_sqrtl.U):
2562 This variable conditionally defines the HAS_SQRTL symbol, which
2563 indicates to the C program that the sqrtl() routine is available.
2565 d_srand48_r (d_srand48_r.U):
2566 This variable conditionally defines the HAS_SRAND48_R symbol,
2567 which indicates to the C program that the srand48_r()
2568 routine is available.
2570 d_srandom_r (d_srandom_r.U):
2571 This variable conditionally defines the HAS_SRANDOM_R symbol,
2572 which indicates to the C program that the srandom_r()
2573 routine is available.
2575 d_sresgproto (d_sresgproto.U):
2576 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
2577 which indicates to the C program that the system provides
2578 a prototype for the setresgid() function. Otherwise, it is
2579 up to the program to supply one.
2581 d_sresuproto (d_sresuproto.U):
2582 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2583 which indicates to the C program that the system provides
2584 a prototype for the setresuid() function. Otherwise, it is
2585 up to the program to supply one.
2588 This variable conditionally defines HAS_STAT if stat() is
2589 available to get file status.
2591 d_statblks (d_statblks.U):
2592 This variable conditionally defines USE_STAT_BLOCKS
2593 if this system has a stat structure declaring
2594 st_blksize and st_blocks.
2596 d_statfs_f_flags (d_statfs_f_flags.U):
2597 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2598 symbol, which indicates to struct statfs from has f_flags member.
2599 This kind of struct statfs is coming from sys/mount.h (BSD),
2600 not from sys/statfs.h (SYSV).
2602 d_statfs_s (d_statfs_s.U):
2603 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2604 which indicates that the struct statfs is supported.
2606 d_static_inline (d_static_inline.U):
2607 This variable conditionally defines the HAS_STATIC_INLINE symbol,
2608 which indicates that the C compiler supports C99-style static
2609 inline. That is, the function can't be called from another
2612 d_statvfs (d_statvfs.U):
2613 This variable conditionally defines the HAS_STATVFS symbol, which
2614 indicates to the C program that the statvfs() routine is available.
2616 d_stdio_cnt_lval (d_stdstdio.U):
2617 This variable conditionally defines STDIO_CNT_LVALUE if the
2618 FILE_cnt macro can be used as an lvalue.
2620 d_stdio_ptr_lval (d_stdstdio.U):
2621 This variable conditionally defines STDIO_PTR_LVALUE if the
2622 FILE_ptr macro can be used as an lvalue.
2624 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2625 This symbol is defined if using the FILE_ptr macro as an lvalue
2626 to increase the pointer by n leaves File_cnt(fp) unchanged.
2628 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2629 This symbol is defined if using the FILE_ptr macro as an lvalue
2630 to increase the pointer by n has the side effect of decreasing the
2631 value of File_cnt(fp) by n.
2633 d_stdio_stream_array (stdio_streams.U):
2634 This variable tells whether there is an array holding
2637 d_stdiobase (d_stdstdio.U):
2638 This variable conditionally defines USE_STDIO_BASE if this system
2639 has a FILE structure declaring a usable _base field (or equivalent)
2642 d_stdstdio (d_stdstdio.U):
2643 This variable conditionally defines USE_STDIO_PTR if this system
2644 has a FILE structure declaring usable _ptr and _cnt fields (or
2645 equivalent) in stdio.h.
2647 d_strcoll (d_strcoll.U):
2648 This variable conditionally defines HAS_STRCOLL if strcoll() is
2649 available to compare strings using collating information.
2651 d_strerror_l (d_strerror_l.U):
2652 This variable conditionally defines the HAS_STRERROR_L symbol, which
2653 indicates to the C program that the strerror_l() routine is available
2654 to return the error message for a given errno value in a particular
2655 locale (identified by a locale_t object).
2657 d_strerror_r (d_strerror_r.U):
2658 This variable conditionally defines the HAS_STRERROR_R symbol,
2659 which indicates to the C program that the strerror_r()
2660 routine is available.
2662 d_strftime (d_strftime.U):
2663 This variable conditionally defines the HAS_STRFTIME symbol, which
2664 indicates to the C program that the strftime() routine is available.
2666 d_strlcat (d_strlcat.U):
2667 This variable conditionally defines the HAS_STRLCAT symbol, which
2668 indicates to the C program that the strlcat () routine is available.
2670 d_strlcpy (d_strlcpy.U):
2671 This variable conditionally defines the HAS_STRLCPY symbol, which
2672 indicates to the C program that the strlcpy () routine is available.
2674 d_strnlen (d_strnlen.U):
2675 This variable conditionally defines the HAS_STRNLEN symbol, which
2676 indicates to the C program that the strnlen () routine is available.
2678 d_strtod (d_strtod.U):
2679 This variable conditionally defines the HAS_STRTOD symbol, which
2680 indicates to the C program that the strtod() routine is available
2681 to provide better numeric string conversion than atof().
2683 d_strtod_l (d_strtod_l.U):
2684 This variable conditionally defines the HAS_STRTOD_L symbol, which
2685 indicates to the C program that the strtod_l() routine is available.
2687 d_strtol (d_strtol.U):
2688 This variable conditionally defines the HAS_STRTOL symbol, which
2689 indicates to the C program that the strtol() routine is available
2690 to provide better numeric string conversion than atoi() and friends.
2692 d_strtold (d_strtold.U):
2693 This variable conditionally defines the HAS_STRTOLD symbol, which
2694 indicates to the C program that the strtold() routine is available.
2696 d_strtold_l (d_strtold_l.U):
2697 This variable conditionally defines the HAS_STRTOLD_L symbol, which
2698 indicates to the C program that the strtold_l() routine is available.
2700 d_strtoll (d_strtoll.U):
2701 This variable conditionally defines the HAS_STRTOLL symbol, which
2702 indicates to the C program that the strtoll() routine is available.
2704 d_strtoq (d_strtoq.U):
2705 This variable conditionally defines the HAS_STRTOQ symbol, which
2706 indicates to the C program that the strtoq() routine is available.
2708 d_strtoul (d_strtoul.U):
2709 This variable conditionally defines the HAS_STRTOUL symbol, which
2710 indicates to the C program that the strtoul() routine is available
2711 to provide conversion of strings to unsigned long.
2713 d_strtoull (d_strtoull.U):
2714 This variable conditionally defines the HAS_STRTOULL symbol, which
2715 indicates to the C program that the strtoull() routine is available.
2717 d_strtouq (d_strtouq.U):
2718 This variable conditionally defines the HAS_STRTOUQ symbol, which
2719 indicates to the C program that the strtouq() routine is available.
2721 d_strxfrm (d_strxfrm.U):
2722 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2723 available to transform strings.
2725 d_strxfrm_l (d_strxfrm_l.U):
2726 This variable conditionally defines HAS_STRXFRM_L if strxfrm_l() is
2727 available to transform strings.
2729 d_suidsafe (d_dosuid.U):
2730 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2731 if setuid scripts can be secure. This test looks in /dev/fd/.
2733 d_symlink (d_symlink.U):
2734 This variable conditionally defines the HAS_SYMLINK symbol, which
2735 indicates to the C program that the symlink() routine is available
2736 to create symbolic links.
2738 d_syscall (d_syscall.U):
2739 This variable conditionally defines HAS_SYSCALL if syscall() is
2740 available call arbitrary system calls.
2742 d_syscallproto (d_syscallproto.U):
2743 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2744 which indicates to the C program that the system provides
2745 a prototype for the syscall() function. Otherwise, it is
2746 up to the program to supply one.
2748 d_sysconf (d_sysconf.U):
2749 This variable conditionally defines the HAS_SYSCONF symbol, which
2750 indicates to the C program that the sysconf() routine is available
2751 to determine system related limits and options.
2753 d_sysernlst (d_strerror.U):
2754 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2755 is available to translate error numbers to the symbolic name.
2757 d_syserrlst (d_strerror.U):
2758 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2759 available to translate error numbers to strings.
2761 d_system (d_system.U):
2762 This variable conditionally defines HAS_SYSTEM if system() is
2763 available to issue a shell command.
2765 d_tcgetpgrp (d_tcgtpgrp.U):
2766 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2767 indicates to the C program that the tcgetpgrp() routine is available.
2768 to get foreground process group ID.
2770 d_tcsetpgrp (d_tcstpgrp.U):
2771 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2772 indicates to the C program that the tcsetpgrp() routine is available
2773 to set foreground process group ID.
2775 d_telldir (d_readdir.U):
2776 This variable conditionally defines HAS_TELLDIR if telldir() is
2779 d_telldirproto (d_telldirproto.U):
2780 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2781 which indicates to the C program that the system provides
2782 a prototype for the telldir() function. Otherwise, it is
2783 up to the program to supply one.
2785 d_tgamma (d_tgamma.U):
2786 This variable conditionally defines the HAS_TGAMMA symbol, which
2787 indicates to the C program that the tgamma() routine is available
2788 for the gamma function. See also d_lgamma.
2790 d_thread_local (d_thread_local.U):
2791 This variable conditionally defines the PERL_THREAD_LOCAL symbol. In
2792 turn that gives a linkage specification for thread-local storage.
2794 d_thread_safe_nl_langinfo_l (d_nl_langinfo_l.U):
2795 This variable contains the eventual value of the
2796 HAS_THREAD_SAFE_NL_LANGINFO_L symbol, which indicates if the
2797 nl_langinfo_l() function exists and is thread-safe.
2800 This variable conditionally defines the HAS_TIME symbol, which indicates
2801 that the time() routine exists. The time() routine is normally
2802 provided on UNIX systems.
2804 d_timegm (d_timegm.U):
2805 This variable conditionally defines the HAS_TIMEGM symbol, which
2806 indicates to the C program that the timegm () routine is available.
2808 d_times (d_times.U):
2809 This variable conditionally defines the HAS_TIMES symbol, which indicates
2810 that the times() routine exists. The times() routine is normally
2811 provided on UNIX systems. You may have to include <sys/times.h>.
2813 d_tm_tm_gmtoff (i_time.U):
2814 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2815 to the C program that the struct tm has the tm_gmtoff field.
2817 d_tm_tm_zone (i_time.U):
2818 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2819 to the C program that the struct tm has the tm_zone field.
2821 d_tmpnam_r (d_tmpnam_r.U):
2822 This variable conditionally defines the HAS_TMPNAM_R symbol,
2823 which indicates to the C program that the tmpnam_r()
2824 routine is available.
2826 d_towlower (d_towlower.U):
2827 This variable conditionally defines the HAS_TOWLOWER symbol, which
2828 indicates to the C program that the towlower() routine is available.
2830 d_towupper (d_towupper.U):
2831 This variable conditionally defines the HAS_TOWUPPER symbol, which
2832 indicates to the C program that the towupper() routine is available.
2834 d_trunc (d_trunc.U):
2835 This variable conditionally defines the HAS_TRUNC symbol, which
2836 indicates to the C program that the trunc() routine is available
2837 to round doubles towards zero.
2839 d_truncate (d_truncate.U):
2840 This variable conditionally defines HAS_TRUNCATE if truncate() is
2841 available to truncate files.
2843 d_truncl (d_truncl.U):
2844 This variable conditionally defines the HAS_TRUNCL symbol, which
2845 indicates to the C program that the truncl() routine is available
2846 to round long doubles towards zero. If copysignl is also present,
2847 we can emulate modfl.
2849 d_ttyname_r (d_ttyname_r.U):
2850 This variable conditionally defines the HAS_TTYNAME_R symbol,
2851 which indicates to the C program that the ttyname_r()
2852 routine is available.
2854 d_tzname (d_tzname.U):
2855 This variable conditionally defines HAS_TZNAME if tzname[] is
2856 available to access timezone names.
2858 d_u32align (d_u32align.U):
2859 This variable tells whether you must access character data
2860 through U32-aligned pointers.
2862 d_ualarm (d_ualarm.U):
2863 This variable conditionally defines the HAS_UALARM symbol, which
2864 indicates to the C program that the ualarm() routine is available.
2866 d_umask (d_umask.U):
2867 This variable conditionally defines the HAS_UMASK symbol, which
2868 indicates to the C program that the umask() routine is available.
2869 to set and get the value of the file creation mask.
2871 d_uname (d_gethname.U):
2872 This variable conditionally defines the HAS_UNAME symbol, which
2873 indicates to the C program that the uname() routine may be
2874 used to derive the host name.
2876 d_union_semun (d_union_semun.U):
2877 This variable conditionally defines HAS_UNION_SEMUN if the
2878 union semun is defined by including <sys/sem.h>.
2880 d_unlinkat (d_fsat.U):
2881 This variable conditionally defines the HAS_UNLINKAT symbol, which
2882 indicates the POSIX unlinkat() function isavailable.
2884 d_unordered (d_unordered.U):
2885 This variable conditionally defines the HAS_UNORDERED symbol, which
2886 indicates to the C program that the unordered() routine is available.
2888 d_unsetenv (d_unsetenv.U):
2889 This variable conditionally defines the HAS_UNSETENV symbol, which
2890 indicates to the C program that the unsetenv () routine is available.
2892 d_uselocale (d_newlocale.U):
2893 This variable conditionally defines the HAS_USELOCALE symbol, which
2894 indicates to the C program that the uselocale() routine is available
2895 to set the current locale for the calling thread.
2897 d_usleep (d_usleep.U):
2898 This variable conditionally defines HAS_USLEEP if usleep() is
2899 available to do high granularity sleeps.
2901 d_usleepproto (d_usleepproto.U):
2902 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2903 which indicates to the C program that the system provides
2904 a prototype for the usleep() function. Otherwise, it is
2905 up to the program to supply one.
2907 d_ustat (d_ustat.U):
2908 This variable conditionally defines HAS_USTAT if ustat() is
2909 available to query file system statistics by dev_t.
2911 d_vendorarch (vendorarch.U):
2912 This variable conditionally defined PERL_VENDORARCH.
2914 d_vendorbin (vendorbin.U):
2915 This variable conditionally defines PERL_VENDORBIN.
2917 d_vendorlib (vendorlib.U):
2918 This variable conditionally defines PERL_VENDORLIB.
2920 d_vendorscript (vendorscript.U):
2921 This variable conditionally defines PERL_VENDORSCRIPT.
2923 d_vfork (d_vfork.U):
2924 This variable conditionally defines the HAS_VFORK symbol, which
2925 indicates the vfork() routine is available.
2927 d_void_closedir (d_closedir.U):
2928 This variable conditionally defines VOID_CLOSEDIR if closedir()
2929 does not return a value.
2931 d_voidsig (d_voidsig.U):
2932 This variable conditionally defines VOIDSIG if this system
2933 declares "void (*signal(...))()" in signal.h. The old way was to
2934 declare it as "int (*signal(...))()".
2936 d_voidtty (i_sysioctl.U):
2937 This variable conditionally defines USE_IOCNOTTY to indicate that the
2938 ioctl() call with TIOCNOTTY should be used to void tty association.
2939 Otherwise (on USG probably), it is enough to close the standard file
2940 descriptors and do a setpgrp().
2942 d_vsnprintf (d_snprintf.U):
2943 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2944 indicates to the C program that the vsnprintf () library function
2947 d_wait4 (d_wait4.U):
2948 This variable conditionally defines the HAS_WAIT4 symbol, which
2949 indicates the wait4() routine is available.
2951 d_waitpid (d_waitpid.U):
2952 This variable conditionally defines HAS_WAITPID if waitpid() is
2953 available to wait for child process.
2955 d_wcrtomb (d_wcrtomb.U):
2956 This variable conditionally defines the HAS_WCRTOMB symbol if the
2957 wcrtomb() routine is available to be used to convert a wide character
2958 into a multi-byte character.
2960 d_wcscmp (d_wcscmp.U):
2961 This variable conditionally defines the HAS_WCSCMP symbol if the
2962 wcscmp() routine is available and can be used to compare wide
2965 d_wcstombs (d_wcstombs.U):
2966 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2967 indicates to the C program that the wcstombs() routine is available
2968 to convert wide character strings to multibyte strings.
2970 d_wcsxfrm (d_wcsxfrm.U):
2971 This variable conditionally defines the HAS_WCSXFRM symbol if the
2972 wcsxfrm() routine is available and can be used to compare wide
2975 d_wctomb (d_wctomb.U):
2976 This variable conditionally defines the HAS_WCTOMB symbol, which
2977 indicates to the C program that the wctomb() routine is available
2978 to convert a wide character to a multibyte.
2980 d_writev (d_writev.U):
2981 This variable conditionally defines the HAS_WRITEV symbol, which
2982 indicates to the C program that the writev() routine is available.
2985 This variable conditionally defines the symbol XENIX, which alerts
2986 the C program that it runs under Xenix.
2989 This variable is used internally by Configure to determine the
2990 full pathname (if any) of the date program. After Configure runs,
2991 the value is reset to a plain "date" and is not useful.
2993 db_hashtype (i_db.U):
2994 This variable contains the type of the hash structure element
2995 in the <db.h> header file. In older versions of DB, it was
2996 int, while in newer ones it is u_int32_t.
2998 db_prefixtype (i_db.U):
2999 This variable contains the type of the prefix structure element
3000 in the <db.h> header file. In older versions of DB, it was
3001 int, while in newer ones it is size_t.
3003 db_version_major (i_db.U):
3004 This variable contains the major version number of
3005 Berkeley DB found in the <db.h> header file.
3007 db_version_minor (i_db.U):
3008 This variable contains the minor version number of
3009 Berkeley DB found in the <db.h> header file.
3010 For DB version 1 this is always 0.
3012 db_version_patch (i_db.U):
3013 This variable contains the patch version number of
3014 Berkeley DB found in the <db.h> header file.
3015 For DB version 1 this is always 0.
3017 default_inc_excludes_dot (defaultincdot.U):
3018 When defined, remove the legacy '.' from @INC
3020 direntrytype (i_dirent.U):
3021 This symbol is set to 'struct direct' or 'struct dirent' depending on
3022 whether dirent is available or not. You should use this pseudo type to
3023 portably declare your directory entries.
3026 This variable contains the extension that is to be used for the
3027 dynamically loaded modules that perl generates.
3030 This variable contains the name of the dynamic loading file that
3031 will be used with the package.
3033 doubleinfbytes (infnan.U):
3034 This variable contains comma-separated list of hexadecimal bytes
3035 for the double precision infinity.
3037 doublekind (longdblfio.U):
3038 This variable, if defined, encodes the type of a double:
3039 1 = IEEE 754 32-bit little endian,
3040 2 = IEEE 754 32-bit big endian,
3041 3 = IEEE 754 64-bit little endian,
3042 4 = IEEE 754 64-bit big endian,
3043 5 = IEEE 754 128-bit little endian,
3044 6 = IEEE 754 128-bit big endian,
3045 7 = IEEE 754 64-bit mixed endian le-be,
3046 8 = IEEE 754 64-bit mixed endian be-le,
3047 9 = VAX 32bit little endian F float format
3048 10 = VAX 64bit little endian D float format
3049 11 = VAX 64bit little endian G float format
3050 12 = IBM 32bit format
3051 13 = IBM 64bit format
3052 14 = Cray 64bit format
3053 -1 = unknown format.
3055 doublemantbits (mantbits.U):
3056 This symbol, if defined, tells how many mantissa bits
3057 there are in double precision floating point format.
3058 Note that this is usually DBL_MANT_DIG minus one, since
3059 with the standard IEEE 754 formats DBL_MANT_DIG includes
3060 the implicit bit which doesn't really exist.
3062 doublenanbytes (infnan.U):
3063 This variable contains comma-separated list of hexadecimal bytes
3064 for the double precision not-a-number.
3066 doublesize (doublesize.U):
3067 This variable contains the value of the DOUBLESIZE symbol, which
3068 indicates to the C program how many bytes there are in a double.
3070 drand01 (randfunc.U):
3071 Indicates the macro to be used to generate normalized
3072 random numbers. Uses randfunc, often divided by
3073 (double) (((unsigned long) 1 << randbits)) in order to
3074 normalize the result.
3075 In C programs, the macro 'Drand01' is mapped to drand01.
3077 drand48_r_proto (d_drand48_r.U):
3078 This variable encodes the prototype of drand48_r.
3079 It is zero if d_drand48_r is undef, and one of the
3080 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
3083 dtrace (usedtrace.U):
3084 This variable holds the location of the dtrace executable.
3086 dtraceobject (dtraceobject.U):
3087 Whether we need to build an object file with the dtrace tool.
3089 dtracexnolibs (dtraceobject.U):
3090 Whether dtrace accepts -xnolibs. If available we call dtrace -h
3091 and dtrace -G with -xnolibs to allow dtrace to run in a jail on
3094 dynamic_ext (Extensions.U):
3095 This variable holds a list of XS extension files we want to
3096 link dynamically into the package. It is used by Makefile.
3098 eagain (nblock_io.U):
3099 This variable bears the symbolic errno code set by read() when no
3100 data is present on the file and non-blocking I/O was enabled (otherwise,
3101 read() blocks naturally).
3104 This variable conditionally defines EBCDIC if this
3105 system uses EBCDIC encoding.
3108 This variable is used internally by Configure to determine the
3109 full pathname (if any) of the echo program. After Configure runs,
3110 the value is reset to a plain "echo" and is not useful.
3113 This variable is used internally by Configure to determine the
3114 full pathname (if any) of the egrep program. After Configure runs,
3115 the value is reset to a plain "egrep" and is not useful.
3118 This variable is defined but not used by Configure.
3119 The value is the empty string and is not useful.
3121 endgrent_r_proto (d_endgrent_r.U):
3122 This variable encodes the prototype of endgrent_r.
3123 It is zero if d_endgrent_r is undef, and one of the
3124 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
3127 endhostent_r_proto (d_endhostent_r.U):
3128 This variable encodes the prototype of endhostent_r.
3129 It is zero if d_endhostent_r is undef, and one of the
3130 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
3133 endnetent_r_proto (d_endnetent_r.U):
3134 This variable encodes the prototype of endnetent_r.
3135 It is zero if d_endnetent_r is undef, and one of the
3136 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
3139 endprotoent_r_proto (d_endprotoent_r.U):
3140 This variable encodes the prototype of endprotoent_r.
3141 It is zero if d_endprotoent_r is undef, and one of the
3142 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
3145 endpwent_r_proto (d_endpwent_r.U):
3146 This variable encodes the prototype of endpwent_r.
3147 It is zero if d_endpwent_r is undef, and one of the
3148 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
3151 endservent_r_proto (d_endservent_r.U):
3152 This variable encodes the prototype of endservent_r.
3153 It is zero if d_endservent_r is undef, and one of the
3154 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
3158 When running under Eunice this variable contains a command which will
3159 convert a shell script to the proper form of text file for it to be
3160 executable by the shell. On other systems it is a no-op.
3163 This is an old synonym for _exe.
3166 This variable is used internally by Configure to determine the
3167 full pathname (if any) of the expr program. After Configure runs,
3168 the value is reset to a plain "expr" and is not useful.
3170 extensions (Extensions.U):
3171 This variable holds a list of all extension files (both XS and
3172 non-xs) installed with the package. It is propagated to Config.pm
3173 and is typically used to test whether a particular extension
3177 ANSI C requires 'extern' where C++ requires 'extern "C"'. This
3178 variable can be used in Configure to do the right thing.
3181 This variable holds a list of extra modules to install.
3183 fflushall (fflushall.U):
3184 This symbol, if defined, tells that to flush
3185 all pending stdio output one must loop through all
3186 the stdio file handles stored in an array and fflush them.
3187 Note that if fflushNULL is defined, fflushall will not
3188 even be probed for and will be left undefined.
3190 fflushNULL (fflushall.U):
3191 This symbol, if defined, tells that fflush(NULL) correctly
3192 flushes all pending stdio output without side effects. In
3193 particular, on some platforms calling fflush(NULL) *still*
3194 corrupts STDIN if it is a pipe.
3197 This variable is defined but not used by Configure.
3198 The value is the empty string and is not useful.
3200 firstmakefile (Unix.U):
3201 This variable defines the first file searched by make. On unix,
3202 it is makefile (then Makefile). On case-insensitive systems,
3203 it might be something else. This is only used to deal with
3204 convoluted make depend tricks.
3207 This variable is defined but not used by Configure.
3208 The value is the empty string and is not useful.
3210 fpossize (fpossize.U):
3211 This variable contains the size of a fpostype in bytes.
3213 fpostype (fpostype.U):
3214 This variable defines Fpos_t to be something like fpos_t, long,
3215 uint, or whatever type is used to declare file positions in libc.
3217 freetype (mallocsrc.U):
3218 This variable contains the return type of free(). It is usually
3219 void, but occasionally int.
3222 This variable contains the command used by Configure
3223 to copy files from the target host. Useful and available
3224 only during Perl build.
3225 The string ':' if not cross-compiling.
3228 This variable contains the full pathname to 'ar', whether or
3229 not the user has specified 'portability'. This is only used
3233 This variable contains the full pathname to 'csh', whether or
3234 not the user has specified 'portability'. This is only used
3235 in the compiled C program, and we assume that all systems which
3236 can share this executable will have the same full pathname to
3239 full_sed (Loc_sed.U):
3240 This variable contains the full pathname to 'sed', whether or
3241 not the user has specified 'portability'. This is only used
3242 in the compiled C program, and we assume that all systems which
3243 can share this executable will have the same full pathname to
3246 gccansipedantic (gccvers.U):
3247 If GNU cc (gcc) is used, this variable will enable (if set) the
3248 -ansi and -pedantic ccflags for building core files (through
3249 cflags script). (See Porting/pumpkin.pod for full description).
3251 gccosandvers (gccvers.U):
3252 If GNU cc (gcc) is used, this variable holds the operating system
3253 and version used to compile gcc. It is set to '' if not gcc,
3254 or if nothing useful can be parsed as the os version.
3256 gccversion (gccvers.U):
3257 If GNU cc (gcc) is used, this variable holds '1' or '2' to
3258 indicate whether the compiler is version 1 or 2. This is used in
3259 setting some of the default cflags. It is set to '' if not gcc.
3261 getgrent_r_proto (d_getgrent_r.U):
3262 This variable encodes the prototype of getgrent_r.
3263 It is zero if d_getgrent_r is undef, and one of the
3264 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
3267 getgrgid_r_proto (d_getgrgid_r.U):
3268 This variable encodes the prototype of getgrgid_r.
3269 It is zero if d_getgrgid_r is undef, and one of the
3270 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
3273 getgrnam_r_proto (d_getgrnam_r.U):
3274 This variable encodes the prototype of getgrnam_r.
3275 It is zero if d_getgrnam_r is undef, and one of the
3276 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
3279 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
3280 This variable encodes the prototype of gethostbyaddr_r.
3281 It is zero if d_gethostbyaddr_r is undef, and one of the
3282 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
3285 gethostbyname_r_proto (d_gethostbyname_r.U):
3286 This variable encodes the prototype of gethostbyname_r.
3287 It is zero if d_gethostbyname_r is undef, and one of the
3288 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
3291 gethostent_r_proto (d_gethostent_r.U):
3292 This variable encodes the prototype of gethostent_r.
3293 It is zero if d_gethostent_r is undef, and one of the
3294 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
3297 getlogin_r_proto (d_getlogin_r.U):
3298 This variable encodes the prototype of getlogin_r.
3299 It is zero if d_getlogin_r is undef, and one of the
3300 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
3303 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
3304 This variable encodes the prototype of getnetbyaddr_r.
3305 It is zero if d_getnetbyaddr_r is undef, and one of the
3306 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
3309 getnetbyname_r_proto (d_getnetbyname_r.U):
3310 This variable encodes the prototype of getnetbyname_r.
3311 It is zero if d_getnetbyname_r is undef, and one of the
3312 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
3315 getnetent_r_proto (d_getnetent_r.U):
3316 This variable encodes the prototype of getnetent_r.
3317 It is zero if d_getnetent_r is undef, and one of the
3318 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
3321 getprotobyname_r_proto (d_getprotobyname_r.U):
3322 This variable encodes the prototype of getprotobyname_r.
3323 It is zero if d_getprotobyname_r is undef, and one of the
3324 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
3327 getprotobynumber_r_proto (d_getprotobynumber_r.U):
3328 This variable encodes the prototype of getprotobynumber_r.
3329 It is zero if d_getprotobynumber_r is undef, and one of the
3330 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
3333 getprotoent_r_proto (d_getprotoent_r.U):
3334 This variable encodes the prototype of getprotoent_r.
3335 It is zero if d_getprotoent_r is undef, and one of the
3336 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
3339 getpwent_r_proto (d_getpwent_r.U):
3340 This variable encodes the prototype of getpwent_r.
3341 It is zero if d_getpwent_r is undef, and one of the
3342 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
3345 getpwnam_r_proto (d_getpwnam_r.U):
3346 This variable encodes the prototype of getpwnam_r.
3347 It is zero if d_getpwnam_r is undef, and one of the
3348 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
3351 getpwuid_r_proto (d_getpwuid_r.U):
3352 This variable encodes the prototype of getpwuid_r.
3353 It is zero if d_getpwuid_r is undef, and one of the
3354 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
3357 getservbyname_r_proto (d_getservbyname_r.U):
3358 This variable encodes the prototype of getservbyname_r.
3359 It is zero if d_getservbyname_r is undef, and one of the
3360 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
3363 getservbyport_r_proto (d_getservbyport_r.U):
3364 This variable encodes the prototype of getservbyport_r.
3365 It is zero if d_getservbyport_r is undef, and one of the
3366 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
3369 getservent_r_proto (d_getservent_r.U):
3370 This variable encodes the prototype of getservent_r.
3371 It is zero if d_getservent_r is undef, and one of the
3372 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
3375 getspnam_r_proto (d_getspnam_r.U):
3376 This variable encodes the prototype of getspnam_r.
3377 It is zero if d_getspnam_r is undef, and one of the
3378 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
3382 This variable contains the format string used for printing a Gid_t.
3384 gidsign (gidsign.U):
3385 This variable contains the signedness of a gidtype.
3386 1 for unsigned, -1 for signed.
3388 gidsize (gidsize.U):
3389 This variable contains the size of a gidtype in bytes.
3391 gidtype (gidtype.U):
3392 This variable defines Gid_t to be something like gid_t, int,
3393 ushort, or whatever type is used to declare the return type
3394 of getgid(). Typically, it is the type of group ids in the kernel.
3397 This variable holds the general path (space-separated) used to
3398 find libraries. It may contain directories that do not exist on
3399 this platform, libpth is the cleaned-up version.
3402 This variable is used internally by Configure to determine the
3403 full pathname (if any) of the gmake program. After Configure runs,
3404 the value is reset to a plain "gmake" and is not useful.
3406 gmtime_r_proto (d_gmtime_r.U):
3407 This variable encodes the prototype of gmtime_r.
3408 It is zero if d_gmtime_r is undef, and one of the
3409 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
3412 gnulibc_version (d_gnulibc.U):
3413 This variable contains the version number of the GNU C library.
3414 It is usually something like '2.2.5'. It is a plain '' if this
3415 is not the GNU C library, or if the version is unknown.
3418 This variable is used internally by Configure to determine the
3419 full pathname (if any) of the grep program. After Configure runs,
3420 the value is reset to a plain "grep" and is not useful.
3423 This variable contains a command that produces the text of the
3424 /etc/group file. This is normally "cat /etc/group", but can be
3425 "ypcat group" when NIS is used.
3426 On some systems, such as os390, there may be no equivalent
3427 command, in which case this variable is unset.
3429 groupstype (groupstype.U):
3430 This variable defines Groups_t to be something like gid_t, int,
3431 ushort, or whatever type is used for the second argument to
3432 getgroups() and setgroups(). Usually, this is the same as
3433 gidtype (gid_t), but sometimes it isn't.
3436 This variable is used internally by Configure to determine the
3437 full pathname (if any) of the gzip program. After Configure runs,
3438 the value is reset to a plain "gzip" and is not useful.
3440 h_fcntl (h_fcntl.U):
3441 This is variable gets set in various places to tell i_fcntl that
3442 <fcntl.h> should be included.
3444 h_sysfile (h_sysfile.U):
3445 This is variable gets set in various places to tell i_sys_file that
3446 <sys/file.h> should be included.
3449 Gives the type of hints used for previous answers. May be one of
3450 "default", "recommended" or "previous".
3453 This variable contains a command that produces the text of the
3454 /etc/hosts file. This is normally "cat /etc/hosts", but can be
3455 "ypcat hosts" when NIS is used.
3456 On some systems, such as os390, there may be no equivalent
3457 command, in which case this variable is unset.
3459 hostgenerate (Cross.U):
3460 This variable contains the path to a generate_uudmap binary that
3461 can be run on the host OS when cross-compiling. Useful and
3462 available only during Perl build.
3463 Empty string '' if not cross-compiling.
3465 hostosname (Cross.U):
3466 This variable contains the original value of '$^O' for hostperl
3467 when cross-compiling. This is useful to pick the proper tools
3468 when running build code in the host.
3469 Empty string '' if not cross-compiling.
3472 This variable contains the path to a miniperl binary that can be
3473 run on the host OS when cross-compiling. Useful and available only
3475 Empty string '' if not cross-compiling.
3477 html1dir (html1dir.U):
3478 This variable contains the name of the directory in which html
3479 source pages are to be put. This directory is for pages
3480 that describe whole programs, not libraries or modules. It
3481 is intended to correspond roughly to section 1 of the Unix
3484 html1direxp (html1dir.U):
3485 This variable is the same as the html1dir variable, but is filename
3486 expanded at configuration time, for convenient use in makefiles.
3488 html3dir (html3dir.U):
3489 This variable contains the name of the directory in which html
3490 source pages are to be put. This directory is for pages
3491 that describe libraries or modules. It is intended to
3492 correspond roughly to section 3 of the Unix manuals.
3494 html3direxp (html3dir.U):
3495 This variable is the same as the html3dir variable, but is filename
3496 expanded at configuration time, for convenient use in makefiles.
3499 This variable is the size of an I16 in bytes.
3502 This variable contains the C type used for Perl's I16.
3504 i32dformat (perlxvf.U):
3505 This variable contains the format string used for printing
3506 a Perl I32 as a signed decimal integer.
3509 This variable is the size of an I32 in bytes.
3512 This variable contains the C type used for Perl's I32.
3515 This variable is the size of an I64 in bytes.
3518 This variable contains the C type used for Perl's I64.
3521 This variable is the size of an I8 in bytes.
3524 This variable contains the C type used for Perl's I8.
3526 i_arpainet (i_arpainet.U):
3527 This variable conditionally defines the I_ARPA_INET symbol,
3528 and indicates whether a C program should include <arpa/inet.h>.
3531 This variable conditionally defines the I_BFD symbol, and
3532 indicates whether a C program can include <bfd.h>.
3534 i_bsdioctl (i_sysioctl.U):
3535 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
3536 indicates to the C program that <sys/bsdioctl.h> exists and should
3539 i_crypt (i_crypt.U):
3540 This variable conditionally defines the I_CRYPT symbol, and indicates
3541 whether a C program should include <crypt.h>.
3544 This variable conditionally defines the I_DB symbol, and indicates
3545 whether a C program may include Berkeley's DB include file <db.h>.
3548 This variable conditionally defines the I_DBM symbol, which
3549 indicates to the C program that <dbm.h> exists and should
3552 i_dirent (i_dirent.U):
3553 This variable conditionally defines I_DIRENT, which indicates
3554 to the C program that it should include <dirent.h>.
3556 i_dlfcn (i_dlfcn.U):
3557 This variable conditionally defines the I_DLFCN symbol, which
3558 indicates to the C program that <dlfcn.h> exists and should
3561 i_execinfo (i_execinfo.U):
3562 This variable conditionally defines the I_EXECINFO symbol, and indicates
3563 whether a C program may include <execinfo.h>, for backtrace() support.
3565 i_fcntl (i_fcntl.U):
3566 This variable controls the value of I_FCNTL (which tells
3567 the C program to include <fcntl.h>).
3570 This variable conditionally defines the I_FENV symbol, which
3571 indicates to the C program that <fenv.h> exists and should
3575 This variable conditionally defines the I_FP symbol, and indicates
3576 whether a C program should include <fp.h>.
3578 i_fp_class (i_fp_class.U):
3579 This variable conditionally defines the I_FP_CLASS symbol, and indicates
3580 whether a C program should include <fp_class.h>.
3583 This variable conditionally defines the I_GDBM symbol, which
3584 indicates to the C program that <gdbm.h> exists and should
3587 i_gdbm_ndbm (i_ndbm.U):
3588 This variable conditionally defines the I_GDBM_NDBM symbol, which
3589 indicates to the C program that <gdbm-ndbm.h> exists and should
3590 be included. This is the location of the ndbm.h compatibility file
3593 i_gdbmndbm (i_ndbm.U):
3594 This variable conditionally defines the I_GDBMNDBM symbol, which
3595 indicates to the C program that <gdbm/ndbm.h> exists and should
3596 be included. This was the location of the ndbm.h compatibility file
3600 This variable conditionally defines the I_GRP symbol, and indicates
3601 whether a C program should include <grp.h>.
3603 i_ieeefp (i_ieeefp.U):
3604 This variable conditionally defines the I_IEEEFP symbol, and indicates
3605 whether a C program should include <ieeefp.h>.
3607 i_inttypes (i_inttypes.U):
3608 This variable conditionally defines the I_INTTYPES symbol,
3609 and indicates whether a C program should include <inttypes.h>.
3611 i_langinfo (i_langinfo.U):
3612 This variable conditionally defines the I_LANGINFO symbol,
3613 and indicates whether a C program should include <langinfo.h>.
3615 i_libutil (i_libutil.U):
3616 This variable conditionally defines the I_LIBUTIL symbol, and indicates
3617 whether a C program should include <libutil.h>.
3619 i_locale (i_locale.U):
3620 This variable conditionally defines the I_LOCALE symbol,
3621 and indicates whether a C program should include <locale.h>.
3623 i_machcthr (i_machcthr.U):
3624 This variable conditionally defines the I_MACH_CTHREADS symbol,
3625 and indicates whether a C program should include <mach/cthreads.h>.
3627 i_malloc (i_malloc.U):
3628 This variable conditionally defines the I_MALLOC symbol, and indicates
3629 whether a C program should include <malloc.h>.
3631 i_mallocmalloc (i_mallocmalloc.U):
3632 This variable conditionally defines the I_MALLOCMALLOC symbol,
3633 and indicates whether a C program should include <malloc/malloc.h>.
3635 i_mntent (i_mntent.U):
3636 This variable conditionally defines the I_MNTENT symbol, and indicates
3637 whether a C program should include <mntent.h>.
3640 This variable conditionally defines the I_NDBM symbol, which
3641 indicates to the C program that <ndbm.h> exists and should
3644 i_netdb (i_netdb.U):
3645 This variable conditionally defines the I_NETDB symbol, and indicates
3646 whether a C program should include <netdb.h>.
3648 i_neterrno (i_neterrno.U):
3649 This variable conditionally defines the I_NET_ERRNO symbol, which
3650 indicates to the C program that <net/errno.h> exists and should
3653 i_netinettcp (i_netinettcp.U):
3654 This variable conditionally defines the I_NETINET_TCP symbol,
3655 and indicates whether a C program should include <netinet/tcp.h>.
3658 This variable conditionally defines I_NETINET_IN, which indicates
3659 to the C program that it should include <netinet/in.h>. Otherwise,
3660 you may try <sys/in.h>.
3663 This variable conditionally defines the I_POLL symbol, and indicates
3664 whether a C program should include <poll.h>.
3667 This variable conditionally defines the I_PROT symbol, and indicates
3668 whether a C program should include <prot.h>.
3670 i_pthread (i_pthread.U):
3671 This variable conditionally defines the I_PTHREAD symbol,
3672 and indicates whether a C program should include <pthread.h>.
3675 This variable conditionally defines I_PWD, which indicates
3676 to the C program that it should include <pwd.h>.
3678 i_quadmath (i_quadmath.U):
3679 This variable conditionally defines I_QUADMATH, which indicates
3680 to the C program that it should include <quadmath.h>.
3682 i_rpcsvcdbm (i_dbm.U):
3683 This variable conditionally defines the I_RPCSVC_DBM symbol, which
3684 indicates to the C program that <rpcsvc/dbm.h> exists and should
3685 be included. Some System V systems might need this instead of <dbm.h>.
3687 i_sgtty (i_termio.U):
3688 This variable conditionally defines the I_SGTTY symbol, which
3689 indicates to the C program that it should include <sgtty.h> rather
3692 i_shadow (i_shadow.U):
3693 This variable conditionally defines the I_SHADOW symbol, and indicates
3694 whether a C program should include <shadow.h>.
3696 i_socks (i_socks.U):
3697 This variable conditionally defines the I_SOCKS symbol, and indicates
3698 whether a C program should include <socks.h>.
3700 i_stdbool (i_stdbool.U):
3701 This variable conditionally defines the I_STDBOOL symbol, which
3702 indicates to the C program that <stdbool.h> exists and should
3705 i_stdint (i_stdint.U):
3706 This variable conditionally defines the I_STDINT symbol, which
3707 indicates to the C program that <stdint.h> exists and should
3710 i_stdlib (i_stdlib.U):
3711 This variable unconditionally defines the I_STDLIB symbol.
3713 i_sunmath (i_sunmath.U):
3714 This variable conditionally defines the I_SUNMATH symbol, and indicates
3715 whether a C program should include <sunmath.h>.
3717 i_sysaccess (i_sysaccess.U):
3718 This variable conditionally defines the I_SYS_ACCESS symbol,
3719 and indicates whether a C program should include <sys/access.h>.
3721 i_sysdir (i_sysdir.U):
3722 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3723 whether a C program should include <sys/dir.h>.
3725 i_sysfile (i_sysfile.U):
3726 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3727 whether a C program should include <sys/file.h> to get R_OK and friends.
3729 i_sysfilio (i_sysioctl.U):
3730 This variable conditionally defines the I_SYS_FILIO symbol, which
3731 indicates to the C program that <sys/filio.h> exists and should
3732 be included in preference to <sys/ioctl.h>.
3735 This variable conditionally defines I_SYS_IN, which indicates
3736 to the C program that it should include <sys/in.h> instead of
3739 i_sysioctl (i_sysioctl.U):
3740 This variable conditionally defines the I_SYS_IOCTL symbol, which
3741 indicates to the C program that <sys/ioctl.h> exists and should
3744 i_syslog (i_syslog.U):
3745 This variable conditionally defines the I_SYSLOG symbol,
3746 and indicates whether a C program should include <syslog.h>.
3748 i_sysmman (i_sysmman.U):
3749 This variable conditionally defines the I_SYS_MMAN symbol,
3750 and indicates whether a C program should include <sys/mman.h>.
3752 i_sysmode (i_sysmode.U):
3753 This variable conditionally defines the I_SYSMODE symbol,
3754 and indicates whether a C program should include <sys/mode.h>.
3756 i_sysmount (i_sysmount.U):
3757 This variable conditionally defines the I_SYSMOUNT symbol,
3758 and indicates whether a C program should include <sys/mount.h>.
3760 i_sysndir (i_sysndir.U):
3761 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3762 whether a C program should include <sys/ndir.h>.
3764 i_sysparam (i_sysparam.U):
3765 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3766 whether a C program should include <sys/param.h>.
3768 i_syspoll (i_syspoll.U):
3769 This variable conditionally defines the I_SYS_POLL symbol, which
3770 indicates to the C program that it should include <sys/poll.h>.
3772 i_sysresrc (i_sysresrc.U):
3773 This variable conditionally defines the I_SYS_RESOURCE symbol,
3774 and indicates whether a C program should include <sys/resource.h>.
3776 i_syssecrt (i_syssecrt.U):
3777 This variable conditionally defines the I_SYS_SECURITY symbol,
3778 and indicates whether a C program should include <sys/security.h>.
3780 i_sysselct (i_sysselct.U):
3781 This variable conditionally defines I_SYS_SELECT, which indicates
3782 to the C program that it should include <sys/select.h> in order to
3783 get the definition of struct timeval.
3785 i_syssockio (i_sysioctl.U):
3786 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3787 C program that socket ioctl codes may be found in <sys/sockio.h>
3788 instead of <sys/ioctl.h>.
3790 i_sysstat (i_sysstat.U):
3791 This variable conditionally defines the I_SYS_STAT symbol,
3792 and indicates whether a C program should include <sys/stat.h>.
3794 i_sysstatfs (i_sysstatfs.U):
3795 This variable conditionally defines the I_SYSSTATFS symbol,
3796 and indicates whether a C program should include <sys/statfs.h>.
3798 i_sysstatvfs (i_sysstatvfs.U):
3799 This variable conditionally defines the I_SYSSTATVFS symbol,
3800 and indicates whether a C program should include <sys/statvfs.h>.
3802 i_systime (i_time.U):
3803 This variable conditionally defines I_SYS_TIME, which indicates
3804 to the C program that it should include <sys/time.h>.
3806 i_systimek (i_time.U):
3807 This variable conditionally defines I_SYS_TIME_KERNEL, which
3808 indicates to the C program that it should include <sys/time.h>
3809 with KERNEL defined.
3811 i_systimes (i_systimes.U):
3812 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3813 whether a C program should include <sys/times.h>.
3815 i_systypes (i_systypes.U):
3816 This variable conditionally defines the I_SYS_TYPES symbol,
3817 and indicates whether a C program should include <sys/types.h>.
3819 i_sysuio (i_sysuio.U):
3820 This variable conditionally defines the I_SYSUIO symbol, and indicates
3821 whether a C program should include <sys/uio.h>.
3823 i_sysun (i_sysun.U):
3824 This variable conditionally defines I_SYS_UN, which indicates
3825 to the C program that it should include <sys/un.h> to get UNIX
3826 domain socket definitions.
3828 i_sysutsname (i_sysutsname.U):
3829 This variable conditionally defines the I_SYSUTSNAME symbol,
3830 and indicates whether a C program should include <sys/utsname.h>.
3832 i_sysvfs (i_sysvfs.U):
3833 This variable conditionally defines the I_SYSVFS symbol,
3834 and indicates whether a C program should include <sys/vfs.h>.
3836 i_syswait (i_syswait.U):
3837 This variable conditionally defines I_SYS_WAIT, which indicates
3838 to the C program that it should include <sys/wait.h>.
3840 i_termio (i_termio.U):
3841 This variable conditionally defines the I_TERMIO symbol, which
3842 indicates to the C program that it should include <termio.h> rather
3845 i_termios (i_termio.U):
3846 This variable conditionally defines the I_TERMIOS symbol, which
3847 indicates to the C program that the POSIX <termios.h> file is
3851 This variable unconditionally defines I_TIME, which indicates
3852 to the C program that it should include <time.h>.
3854 i_unistd (i_unistd.U):
3855 This variable conditionally defines the I_UNISTD symbol, and indicates
3856 whether a C program should include <unistd.h>.
3858 i_ustat (i_ustat.U):
3859 This variable conditionally defines the I_USTAT symbol, and indicates
3860 whether a C program should include <ustat.h>.
3862 i_utime (i_utime.U):
3863 This variable conditionally defines the I_UTIME symbol, and indicates
3864 whether a C program should include <utime.h>.
3866 i_vfork (i_vfork.U):
3867 This variable conditionally defines the I_VFORK symbol, and indicates
3868 whether a C program should include vfork.h.
3870 i_wchar (i_wchar.U):
3871 This variable conditionally defines the I_WCHAR symbol,
3872 that indicates whether a C program may include <wchar.h>.
3874 i_wctype (i_wctype.U):
3875 This variable conditionally defines the I_WCTYPE symbol,
3876 that indicates whether a C program may include <wctype.h>.
3878 i_xlocale (d_newlocale.U):
3879 This symbol, if defined, indicates to the C program that the
3880 header xlocale.h is available. See also xlocale_needed.
3882 ignore_versioned_solibs (libs.U):
3883 This variable should be non-empty if non-versioned shared
3884 libraries (libfoo.so.x.y) are to be ignored (because they
3885 cannot be linked against).
3887 inc_version_list (inc_version_list.U):
3888 This variable specifies the list of subdirectories in over
3889 which perl.c:incpush() and lib/lib.pm will automatically
3890 search when adding directories to @INC. The elements in
3891 the list are separated by spaces. This is only useful
3892 if you have a perl library directory tree structured like the
3893 default one. See INSTALL for how this works. The versioned
3894 site_perl directory was introduced in 5.005, so that is the
3895 lowest possible value.
3897 This list includes architecture-dependent directories back to
3898 version $api_versionstring (e.g. 5.5.640) and
3899 architecture-independent directories all the way back to
3902 inc_version_list_init (inc_version_list.U):
3903 This variable holds the same list as inc_version_list, but
3904 each item is enclosed in double quotes and separated by commas,
3905 suitable for use in the PERL_INC_VERSION_LIST initialization.
3908 This variable must precede the normal include path to get the
3909 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3910 Value can be "" or "/bsd43" on mips.
3913 This variable must precede the normal include path to get the
3914 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3915 Value can be "" or "/bsd43" on mips.
3918 This variable is defined but not used by Configure.
3919 The value is the empty string and is not useful.
3921 initialinstalllocation (bin.U):
3922 When userelocatableinc is true, this variable holds the location
3923 that make install should copy the perl binary to, with all the
3924 run-time relocatable paths calculated from this at install time.
3925 When used, it is initialized to the original value of binexp, and
3926 then binexp is set to '.../', as the other binaries are found
3927 relative to the perl binary.
3929 installarchlib (archlib.U):
3930 This variable is really the same as archlibexp but may differ on
3931 those systems using AFS. For extra portability, only this variable
3932 should be used in makefiles.
3935 This variable is the same as binexp unless AFS is running in which case
3936 the user is explicitly prompted for it. This variable should always
3937 be used in your makefiles for maximum portability.
3939 installhtml1dir (html1dir.U):
3940 This variable is really the same as html1direxp, unless you are
3941 using a different installprefix. For extra portability, you
3942 should only use this variable within your makefiles.
3944 installhtml3dir (html3dir.U):
3945 This variable is really the same as html3direxp, unless you are
3946 using a different installprefix. For extra portability, you
3947 should only use this variable within your makefiles.
3949 installman1dir (man1dir.U):
3950 This variable is really the same as man1direxp, unless you are using
3951 AFS in which case it points to the read/write location whereas
3952 man1direxp only points to the read-only access location. For extra
3953 portability, you should only use this variable within your makefiles.
3955 installman3dir (man3dir.U):
3956 This variable is really the same as man3direxp, unless you are using
3957 AFS in which case it points to the read/write location whereas
3958 man3direxp only points to the read-only access location. For extra
3959 portability, you should only use this variable within your makefiles.
3961 installprefix (installprefix.U):
3962 This variable holds the name of the directory below which
3963 "make install" will install the package. For most users, this
3964 is the same as prefix. However, it is useful for
3965 installing the software into a different (usually temporary)
3966 location after which it can be bundled up and moved somehow
3967 to the final location specified by prefix.
3969 installprefixexp (installprefix.U):
3970 This variable holds the full absolute path of installprefix
3971 with all ~-expansion done.
3973 installprivlib (privlib.U):
3974 This variable is really the same as privlibexp but may differ on
3975 those systems using AFS. For extra portability, only this variable
3976 should be used in makefiles.
3978 installscript (scriptdir.U):
3979 This variable is usually the same as scriptdirexp, unless you are on
3980 a system running AFS, in which case they may differ slightly. You
3981 should always use this variable within your makefiles for portability.
3983 installsitearch (sitearch.U):
3984 This variable is really the same as sitearchexp but may differ on
3985 those systems using AFS. For extra portability, only this variable
3986 should be used in makefiles.
3988 installsitebin (sitebin.U):
3989 This variable is usually the same as sitebinexp, unless you are on
3990 a system running AFS, in which case they may differ slightly. You
3991 should always use this variable within your makefiles for portability.
3993 installsitehtml1dir (sitehtml1dir.U):
3994 This variable is really the same as sitehtml1direxp, unless you are using
3995 AFS in which case it points to the read/write location whereas
3996 html1direxp only points to the read-only access location. For extra
3997 portability, you should only use this variable within your makefiles.
3999 installsitehtml3dir (sitehtml3dir.U):
4000 This variable is really the same as sitehtml3direxp, unless you are using
4001 AFS in which case it points to the read/write location whereas
4002 html3direxp only points to the read-only access location. For extra
4003 portability, you should only use this variable within your makefiles.
4005 installsitelib (sitelib.U):
4006 This variable is really the same as sitelibexp but may differ on
4007 those systems using AFS. For extra portability, only this variable
4008 should be used in makefiles.
4010 installsiteman1dir (siteman1dir.U):
4011 This variable is really the same as siteman1direxp, unless you are using
4012 AFS in which case it points to the read/write location whereas
4013 man1direxp only points to the read-only access location. For extra
4014 portability, you should only use this variable within your makefiles.
4016 installsiteman3dir (siteman3dir.U):
4017 This variable is really the same as siteman3direxp, unless you are using
4018 AFS in which case it points to the read/write location whereas
4019 man3direxp only points to the read-only access location. For extra
4020 portability, you should only use this variable within your makefiles.
4022 installsitescript (sitescript.U):
4023 This variable is usually the same as sitescriptexp, unless you are on
4024 a system running AFS, in which case they may differ slightly. You
4025 should always use this variable within your makefiles for portability.
4027 installstyle (installstyle.U):
4028 This variable describes the "style" of the perl installation.
4029 This is intended to be useful for tools that need to
4030 manipulate entire perl distributions. Perl itself doesn't use
4031 this to find its libraries -- the library directories are
4032 stored directly in Config.pm. Currently, there are only two
4033 styles: "lib" and "lib/perl5". The default library locations
4034 (e.g. privlib, sitelib) are either $prefix/lib or
4035 $prefix/lib/perl5. The former is useful if $prefix is a
4036 directory dedicated to perl (e.g. /opt/perl), while the latter
4037 is useful if $prefix is shared by many packages, e.g. if
4040 Unfortunately, while this "style" variable is used to set
4041 defaults for all three directory hierarchies (core, vendor, and
4042 site), there is no guarantee that the same style is actually
4043 appropriate for all those directories. For example, $prefix
4044 might be /opt/perl, but $siteprefix might be /usr/local.
4045 (Perhaps, in retrospect, the "lib" style should never have been
4046 supported, but it did seem like a nice idea at the time.)
4048 The situation is even less clear for tools such as MakeMaker
4049 that can be used to install additional modules into
4050 non-standard places. For example, if a user intends to install
4051 a module into a private directory (perhaps by setting PREFIX on
4052 the Makefile.PL command line), then there is no reason to
4053 assume that the Configure-time $installstyle setting will be
4054 relevant for that PREFIX.
4056 This may later be extended to include other information, so
4057 be careful with pattern-matching on the results.
4059 For compatibility with perl5.005 and earlier, the default
4060 setting is based on whether or not $prefix contains the string
4063 installusrbinperl (instubperl.U):
4064 This variable tells whether Perl should be installed also as
4065 /usr/bin/perl in addition to
4068 installvendorarch (vendorarch.U):
4069 This variable is really the same as vendorarchexp but may differ on
4070 those systems using AFS. For extra portability, only this variable
4071 should be used in makefiles.
4073 installvendorbin (vendorbin.U):
4074 This variable is really the same as vendorbinexp but may differ on
4075 those systems using AFS. For extra portability, only this variable
4076 should be used in makefiles.
4078 installvendorhtml1dir (vendorhtml1dir.U):
4079 This variable is really the same as vendorhtml1direxp but may differ on
4080 those systems using AFS. For extra portability, only this variable
4081 should be used in makefiles.
4083 installvendorhtml3dir (vendorhtml3dir.U):
4084 This variable is really the same as vendorhtml3direxp but may differ on
4085 those systems using AFS. For extra portability, only this variable
4086 should be used in makefiles.
4088 installvendorlib (vendorlib.U):
4089 This variable is really the same as vendorlibexp but may differ on
4090 those systems using AFS. For extra portability, only this variable
4091 should be used in makefiles.
4093 installvendorman1dir (vendorman1dir.U):
4094 This variable is really the same as vendorman1direxp but may differ on
4095 those systems using AFS. For extra portability, only this variable
4096 should be used in makefiles.
4098 installvendorman3dir (vendorman3dir.U):
4099 This variable is really the same as vendorman3direxp but may differ on
4100 those systems using AFS. For extra portability, only this variable
4101 should be used in makefiles.
4103 installvendorscript (vendorscript.U):
4104 This variable is really the same as vendorscriptexp but may differ on
4105 those systems using AFS. For extra portability, only this variable
4106 should be used in makefiles.
4108 intsize (intsize.U):
4109 This variable contains the value of the INTSIZE symbol, which
4110 indicates to the C program how many bytes there are in an int.
4112 issymlink (issymlink.U):
4113 This variable holds the test command to test for a symbolic link
4114 (if they are supported). Typical values include 'test -h' and
4117 ivdformat (perlxvf.U):
4118 This variable contains the format string used for printing
4119 a Perl IV as a signed decimal integer.
4122 This variable is the size of an IV in bytes.
4125 This variable contains the C type used for Perl's IV.
4127 known_extensions (Extensions.U):
4128 This variable holds a list of all extensions (both XS and non-xs)
4129 included in the package source distribution. This information is
4130 only really of use during the Perl build, as the list makes no
4131 distinction between extensions which were build and installed, and
4132 those which where not. See "extensions" for the list of extensions
4133 actually built and available.
4136 This variable is defined but not used by Configure.
4137 The value is the empty string and is not useful.
4140 This variable indicates the program to be used to link
4141 libraries for dynamic loading. On some systems, it is 'ld'.
4142 On ELF systems, it should be $cc. Mostly, we'll try to respect
4143 the hint file setting.
4145 ld_can_script (dlsrc.U):
4146 This variable shows if the loader accepts scripts in the form of
4147 -Wl,--version-script=ld.script. This is currently only supported
4148 for GNU ld on ELF in dynamic loading builds.
4150 lddlflags (dlsrc.U):
4151 This variable contains any special flags that might need to be
4152 passed to $ld to create a shared library suitable for dynamic
4153 loading. It is up to the makefile to use it. For hpux, it
4154 should be '-b'. For sunos 4.1, it is empty.
4156 ldflags (ccflags.U):
4157 This variable contains any additional C loader flags desired by
4158 the user. It is up to the Makefile to use this.
4160 ldflags_uselargefiles (uselfs.U):
4161 This variable contains the loader flags needed by large file builds
4162 and added to ldflags by hints files.
4164 ldlibpthname (libperl.U):
4165 This variable holds the name of the shared library
4166 search path, often LD_LIBRARY_PATH. To get an empty
4167 string, the hints file must set this to 'none'.
4170 This variable is used internally by Configure to determine the
4171 full pathname (if any) of the less program. After Configure runs,
4172 the value is reset to a plain "less" and is not useful.
4175 This is an old synonym for _a.
4178 This variable contains the location of the C library.
4180 libperl (libperl.U):
4181 The perl executable is obtained by linking perlmain.c with
4182 libperl, any static extensions (usually just DynaLoader),
4183 and any other libraries needed on this system. libperl
4184 is usually libperl.a, but can also be libperl.so.xxx if
4185 the user wishes to build a perl executable with a shared
4189 This variable holds the general path (space-separated) used to find
4190 libraries. It is intended to be used by other units.
4193 This variable holds the additional libraries we want to use.
4194 It is up to the Makefile to deal with it. The list can be empty.
4197 This variable holds the directory names aka dirnames of the libraries
4198 we found and accepted, duplicates are removed.
4201 This variable holds the filenames aka basenames of the libraries
4202 we found and accepted.
4205 This variable holds the full pathnames of the libraries
4206 we found and accepted.
4209 This variable holds the directory names probed for libraries.
4211 libswanted (Myinit.U):
4212 This variable holds a list of all the libraries we want to
4213 search. The order is chosen to pick up the c library
4214 ahead of ucb or bsd libraries for SVR4.
4216 libswanted_uselargefiles (uselfs.U):
4217 This variable contains the libraries needed by large file builds
4218 and added to ldflags by hints files. It is a space separated list
4219 of the library names without the "lib" prefix or any suffix, just
4223 This variable is defined but not used by Configure.
4224 The value is the empty string and is not useful.
4227 This variable is defined but not used by Configure.
4228 The value is the empty string and is not useful.
4230 lkflags (ccflags.U):
4231 This variable contains any additional C partial linker flags desired by
4232 the user. It is up to the Makefile to use this.
4235 This variable is used internally by Configure to determine the
4236 full pathname (if any) of the ln program. After Configure runs,
4237 the value is reset to a plain "ln" and is not useful.
4240 This variable holds the name of the command to make
4241 symbolic links (if they are supported). It can be used
4242 in the Makefile. It is either 'ln -s' or 'ln'
4244 localtime_r_proto (d_localtime_r.U):
4245 This variable encodes the prototype of localtime_r.
4246 It is zero if d_localtime_r is undef, and one of the
4247 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
4250 locincpth (ccflags.U):
4251 This variable contains a list of additional directories to be
4252 searched by the compiler. The appropriate '-I' directives will
4253 be added to ccflags. This is intended to simplify setting
4254 local directories from the Configure command line.
4255 It's not much, but it parallels the loclibpth stuff in libpth.U.
4257 loclibpth (libpth.U):
4258 This variable holds the paths (space-separated) used to find local
4259 libraries. It is prepended to libpth, and is intended to be easily
4260 set from the command line.
4262 longdblinfbytes (infnan.U):
4263 This variable contains comma-separated list of hexadecimal bytes
4264 for the long double precision infinity.
4266 longdblkind (d_longdbl.U):
4267 This variable, if defined, encodes the type of a long double:
4269 1 = IEEE 754 128-bit little endian,
4270 2 = IEEE 754 128-bit big endian,
4271 3 = x86 80-bit little endian,
4272 4 = x86 80-bit big endian,
4273 5 = double-double 128-bit little endian,
4274 6 = double-double 128-bit big endian,
4275 7 = 128-bit mixed-endian double-double (64-bit LEs in BE),
4276 8 = 128-bit mixed-endian double-double (64-bit BEs in LE),
4277 9 = 128-bit PDP-style mixed-endian long doubles,
4278 -1 = unknown format.
4280 longdblmantbits (mantbits.U):
4281 This symbol, if defined, tells how many mantissa bits
4282 there are in long double precision floating point format.
4283 Note that this can be LDBL_MANT_DIG minus one,
4284 since LDBL_MANT_DIG can include the IEEE 754 implicit bit.
4285 The common x86-style 80-bit long double does not have
4288 longdblnanbytes (infnan.U):
4289 This variable contains comma-separated list of hexadecimal bytes
4290 for the long double precision not-a-number.
4292 longdblsize (d_longdbl.U):
4293 This variable contains the value of the LONG_DOUBLESIZE symbol, which
4294 indicates to the C program how many bytes there are in a long double,
4295 if this system supports long doubles. Note that this is
4296 sizeof(long double), which may include unused bytes.
4298 longlongsize (d_longlong.U):
4299 This variable contains the value of the LONGLONGSIZE symbol, which
4300 indicates to the C program how many bytes there are in a long long,
4301 if this system supports long long.
4303 longsize (intsize.U):
4304 This variable contains the value of the LONGSIZE symbol, which
4305 indicates to the C program how many bytes there are in a long.
4308 This variable is defined but not used by Configure.
4309 The value is the empty string and is not useful.
4312 This variable is defined but not used by Configure.
4313 The value is the empty string and is not useful.
4316 This variable is used internally by Configure to determine the
4317 full pathname (if any) of the ls program. After Configure runs,
4318 the value is reset to a plain "ls" and is not useful.
4320 lseeksize (lseektype.U):
4321 This variable defines lseektype to be something like off_t, long,
4322 or whatever type is used to declare lseek offset's type in the
4323 kernel (which also appears to be lseek's return type).
4325 lseektype (lseektype.U):
4326 This variable defines lseektype to be something like off_t, long,
4327 or whatever type is used to declare lseek offset's type in the
4328 kernel (which also appears to be lseek's return type).
4331 This variable is defined but not used by Configure.
4332 The value is the empty string and is not useful.
4335 This variable is defined but not used by Configure.
4336 The value is the empty string and is not useful.
4339 This variable is used internally by Configure to determine the
4340 full pathname (if any) of the make program. After Configure runs,
4341 the value is reset to a plain "make" and is not useful.
4343 make_set_make (make.U):
4344 Some versions of 'make' set the variable MAKE. Others do not.
4345 This variable contains the string to be included in Makefile.SH
4346 so that MAKE is set if needed, and not if not needed.
4347 Possible values are:
4349 make_set_make='#' # If your make program handles this for you,
4351 make_set_make="MAKE=$make" # if it doesn't.
4353 This uses a comment character so that we can distinguish a
4354 'set' value (from a previous config.sh or Configure '-D' option)
4355 from an uncomputed value.
4357 mallocobj (mallocsrc.U):
4358 This variable contains the name of the malloc.o that this package
4359 generates, if that malloc.o is preferred over the system malloc.
4360 Otherwise the value is null. This variable is intended for generating
4361 Makefiles. See mallocsrc.
4363 mallocsrc (mallocsrc.U):
4364 This variable contains the name of the malloc.c that comes with
4365 the package, if that malloc.c is preferred over the system malloc.
4366 Otherwise the value is null. This variable is intended for generating
4369 malloctype (mallocsrc.U):
4370 This variable contains the kind of ptr returned by malloc and realloc.
4372 man1dir (man1dir.U):
4373 This variable contains the name of the directory in which manual
4374 source pages are to be put. It is the responsibility of the
4375 Makefile.SH to get the value of this into the proper command.
4376 You must be prepared to do the ~name expansion yourself.
4378 man1direxp (man1dir.U):
4379 This variable is the same as the man1dir variable, but is filename
4380 expanded at configuration time, for convenient use in makefiles.
4382 man1ext (man1dir.U):
4383 This variable contains the extension that the manual page should
4384 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
4387 man3dir (man3dir.U):
4388 This variable contains the name of the directory in which manual
4389 source pages are to be put. It is the responsibility of the
4390 Makefile.SH to get the value of this into the proper command.
4391 You must be prepared to do the ~name expansion yourself.
4393 man3direxp (man3dir.U):
4394 This variable is the same as the man3dir variable, but is filename
4395 expanded at configuration time, for convenient use in makefiles.
4397 man3ext (man3dir.U):
4398 This variable contains the extension that the manual page should
4399 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
4402 mips_type (usrinc.U):
4403 This variable holds the environment type for the mips system.
4404 Possible values are "BSD 4.3" and "System V".
4406 mistrustnm (Csym.U):
4407 This variable can be used to establish a fallthrough for the cases
4408 where nm fails to find a symbol. If usenm is false or usenm is true
4409 and mistrustnm is false, this variable has no effect. If usenm is true
4410 and mistrustnm is "compile", a test program will be compiled to try to
4411 find any symbol that can't be located via nm lookup. If mistrustnm is
4412 "run", the test program will be run as well as being compiled.
4415 This variable is used internally by Configure to determine the
4416 full pathname (if any) of the mkdir program. After Configure runs,
4417 the value is reset to a plain "mkdir" and is not useful.
4419 mmaptype (d_mmap.U):
4420 This symbol contains the type of pointer returned by mmap()
4421 (and simultaneously the type of the first argument).
4422 It can be 'void *' or 'caddr_t'.
4424 modetype (modetype.U):
4425 This variable defines modetype to be something like mode_t,
4426 int, unsigned short, or whatever type is used to declare file
4427 modes for system calls.
4430 This variable is used internally by Configure to determine the
4431 full pathname (if any) of the more program. After Configure runs,
4432 the value is reset to a plain "more" and is not useful.
4434 multiarch (multiarch.U):
4435 This variable conditionally defines the MULTIARCH symbol
4436 which signifies the presence of multiplatform files.
4437 This is normally set by hints files.
4440 This variable is defined but not used by Configure.
4441 The value is the empty string and is not useful.
4443 myarchname (archname.U):
4444 This variable holds the architecture name computed by Configure in
4445 a previous run. It is not intended to be perused by any user and
4446 should never be set in a hint file.
4448 mydomain (myhostname.U):
4449 This variable contains the eventual value of the MYDOMAIN symbol,
4450 which is the domain of the host the program is going to run on.
4451 The domain must be appended to myhostname to form a complete host name.
4452 The dot comes with mydomain, and need not be supplied by the program.
4454 myhostname (myhostname.U):
4455 This variable contains the eventual value of the MYHOSTNAME symbol,
4456 which is the name of the host the program is going to run on.
4457 The domain is not kept with hostname, but must be gotten from mydomain.
4458 The dot comes with mydomain, and need not be supplied by the program.
4460 myuname (Oldconfig.U):
4461 The output of 'uname -a' if available, otherwise the hostname.
4462 The whole thing is then lower-cased and slashes and single quotes are
4466 This variable contains the '-n' flag if that is what causes the echo
4467 command to suppress newline. Otherwise it is null. Correct usage is
4468 $echo $n "prompt for a question: $c".
4470 need_va_copy (need_va_copy.U):
4471 This symbol, if defined, indicates that the system stores
4472 the variable argument list datatype, va_list, in a format
4473 that cannot be copied by simple assignment, so that some
4474 other means must be used when copying is required.
4475 As such systems vary in their provision (or non-provision)
4476 of copying mechanisms, handy.h defines a platform-
4477 independent macro, Perl_va_copy(src, dst), to do the job.
4479 netdb_hlen_type (netdbtype.U):
4480 This variable holds the type used for the 2nd argument to
4481 gethostbyaddr(). Usually, this is int or size_t or unsigned.
4482 This is only useful if you have gethostbyaddr(), naturally.
4484 netdb_host_type (netdbtype.U):
4485 This variable holds the type used for the 1st argument to
4486 gethostbyaddr(). Usually, this is char * or void *, possibly
4487 with or without a const prefix.
4488 This is only useful if you have gethostbyaddr(), naturally.
4490 netdb_name_type (netdbtype.U):
4491 This variable holds the type used for the argument to
4492 gethostbyname(). Usually, this is char * or const char *.
4493 This is only useful if you have gethostbyname(), naturally.
4495 netdb_net_type (netdbtype.U):
4496 This variable holds the type used for the 1st argument to
4497 getnetbyaddr(). Usually, this is int or long.
4498 This is only useful if you have getnetbyaddr(), naturally.
4501 This variable is used internally by Configure to determine the
4502 full pathname (if any) of the nm program. After Configure runs,
4503 the value is reset to a plain "nm" and is not useful.
4506 This variable holds the options that may be necessary for nm.
4508 nm_so_opt (usenm.U):
4509 This variable holds the options that may be necessary for nm
4510 to work on a shared library but that can not be used on an
4511 archive library. Currently, this is only used by Linux, where
4512 nm --dynamic is *required* to get symbols from an ELF library which
4513 has been stripped, but nm --dynamic is *fatal* on an archive library.
4514 Maybe Linux should just always set usenm=false.
4516 nonxs_ext (Extensions.U):
4517 This variable holds a list of all non-xs extensions built and
4518 installed by the package. By default, all non-xs extensions
4519 distributed will be built, with the exception of platform-specific
4520 extensions (currently only one VMS specific extension).
4523 This variable is used internally by Configure to determine the
4524 full pathname (if any) of the nroff program. After Configure runs,
4525 the value is reset to a plain "nroff" and is not useful.
4527 nv_overflows_integers_at (perlxv.U):
4528 This variable gives the largest integer value that NVs can hold
4529 as a constant floating point expression.
4530 If it could not be determined, it holds the value 0.
4532 nv_preserves_uv_bits (perlxv.U):
4533 This variable indicates how many of bits type uvtype
4534 a variable nvtype can preserve.
4536 nveformat (perlxvf.U):
4537 This variable contains the format string used for printing
4538 a Perl NV using %e-ish floating point format.
4540 nvEUformat (perlxvf.U):
4541 This variable contains the format string used for printing
4542 a Perl NV using %E-ish floating point format.
4544 nvfformat (perlxvf.U):
4545 This variable contains the format string used for printing
4546 a Perl NV using %f-ish floating point format.
4548 nvFUformat (perlxvf.U):
4549 This variable contains the format string used for printing
4550 a Perl NV using %F-ish floating point format.
4552 nvgformat (perlxvf.U):
4553 This variable contains the format string used for printing
4554 a Perl NV using %g-ish floating point format.
4556 nvGUformat (perlxvf.U):
4557 This variable contains the format string used for printing
4558 a Perl NV using %G-ish floating point format.
4560 nvmantbits (mantbits.U):
4561 This variable tells how many bits the mantissa of a Perl NV has,
4562 not including the possible implicit bit.
4565 This variable is the size of a Perl NV in bytes.
4566 Note that some floating point formats have unused bytes.
4569 This variable contains the C type used for Perl's NV.
4571 o_nonblock (nblock_io.U):
4572 This variable bears the symbol value to be used during open() or fcntl()
4573 to turn on non-blocking I/O for a file descriptor. If you wish to switch
4574 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
4575 but that is only supported by some devices.
4578 This is an old synonym for _o.
4580 old_pthread_create_joinable (d_pthrattrj.U):
4581 This variable defines the constant to use for creating joinable
4582 (aka undetached) pthreads. Unused if pthread.h defines
4583 PTHREAD_CREATE_JOINABLE. If used, possible values are
4584 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
4586 optimize (ccflags.U):
4587 This variable contains any optimizer/debugger flag that should be used.
4588 It is up to the Makefile to use it.
4590 orderlib (orderlib.U):
4591 This variable is "true" if the components of libraries must be ordered
4592 (with `lorder $* | tsort`) before placing them in an archive. Set to
4593 "false" if ranlib or ar can generate random libraries.
4595 osname (Oldconfig.U):
4596 This variable contains the operating system name (e.g. sunos,
4597 solaris, hpux, etc.). It can be useful later on for setting
4598 defaults. Any spaces are replaced with underscores. It is set
4599 to a null string if we can't figure it out.
4601 osvers (Oldconfig.U):
4602 This variable contains the operating system version (e.g.
4603 4.1.3, 5.2, etc.). It is primarily used for helping select
4604 an appropriate hints file, but might be useful elsewhere for
4605 setting defaults. It is set to '' if we can't figure it out.
4606 We try to be flexible about how much of the version number
4607 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
4608 same for this package, hints files might just be os_4.0 or
4609 os_4.1, etc., not keeping separate files for each little release.
4611 otherlibdirs (otherlibdirs.U):
4612 This variable contains a colon-separated set of paths for the perl
4613 binary to search for additional library files or modules.
4614 These directories will be tacked to the end of @INC.
4615 Perl will automatically search below each path for version-
4616 and architecture-specific directories. See inc_version_list
4618 A value of ' ' means 'none' and is used to preserve this value
4619 for the next run through Configure.
4621 package (package.U):
4622 This variable contains the name of the package being constructed.
4623 It is primarily intended for the use of later Configure units.
4626 This variable contains the name of the preferred pager on the system.
4627 Usual values are (the full pathnames of) more, less, pg, or cat.
4630 This variable contains a command that produces the text of the
4631 /etc/passwd file. This is normally "cat /etc/passwd", but can be
4632 "ypcat passwd" when NIS is used.
4633 On some systems, such as os390, there may be no equivalent
4634 command, in which case this variable is unset.
4636 patchlevel (patchlevel.U):
4637 The patchlevel level of this package.
4638 The value of patchlevel comes from the patchlevel.h file.
4639 In a version number such as 5.6.1, this is the "6".
4640 In patchlevel.h, this is referred to as "PERL_VERSION".
4643 This is an old synonym for p_ in Head.U, the character
4644 used to separate elements in the command shell search PATH.
4647 This variable is used internally by Configure to determine the
4648 full pathname (if any) of the perl program. After Configure runs,
4649 the value is reset to a plain "perl" and is not useful.
4652 This variable contains the full path (if any) to a previously
4653 installed perl5.005 or later suitable for running the script
4654 to determine inc_version_list.
4656 PERL_API_REVISION (patchlevel.h):
4657 This number describes the earliest compatible PERL_REVISION of
4658 Perl ("compatibility" here being defined as sufficient binary/API
4659 compatibility to run XS code built with the older version).
4660 Normally this does not change across maintenance releases.
4661 Please read the comment in patchlevel.h.
4663 PERL_API_SUBVERSION (patchlevel.h):
4664 This number describes the earliest compatible PERL_SUBVERSION of
4665 Perl ("compatibility" here being defined as sufficient binary/API
4666 compatibility to run XS code built with the older version).
4667 Normally this does not change across maintenance releases.
4668 Please read the comment in patchlevel.h.
4670 PERL_API_VERSION (patchlevel.h):
4671 This number describes the earliest compatible PERL_VERSION of
4672 Perl ("compatibility" here being defined as sufficient binary/API
4673 compatibility to run XS code built with the older version).
4674 Normally this does not change across maintenance releases.
4675 Please read the comment in patchlevel.h.
4677 PERL_CONFIG_SH (Oldsyms.U):
4678 This is set to 'true' in config.sh so that a shell script
4679 sourcing config.sh can tell if it has been sourced already.
4681 PERL_PATCHLEVEL (Oldsyms.U):
4682 This symbol reflects the patchlevel, if available. Will usually
4683 come from the .patch file, which is available when the perl
4684 source tree was fetched with rsync.
4686 perl_patchlevel (patchlevel.U):
4687 This is the Perl patch level, a numeric change identifier,
4688 as defined by whichever source code maintenance system
4689 is used to maintain the patches; currently Perforce.
4690 It does not correlate with the Perl version numbers or
4691 the maintenance versus development dichotomy except
4692 by also being increasing.
4694 PERL_REVISION (Oldsyms.U):
4695 In a Perl version number such as 5.6.2, this is the 5.
4696 This value is manually set in patchlevel.h
4698 perl_static_inline (d_static_inline.U):
4699 This variable defines the PERL_STATIC_INLINE symbol to
4700 the best-guess incantation to use for static inline functions.
4701 Possibilities include
4703 static __inline__ (gcc -ansi)
4704 static __inline (MSVC)
4705 static _inline (older MSVC)
4706 static (c89 compilers)
4708 PERL_SUBVERSION (Oldsyms.U):
4709 In a Perl version number such as 5.6.2, this is the 2.
4710 Values greater than 50 represent potentially unstable
4711 development subversions.
4712 This value is manually set in patchlevel.h
4714 perl_thread_local (d_thread_local.U):
4715 This variable gives the value for the PERL_THREAD_LOCAL symbol (when
4716 defined), which gives a linkage specification for thread-local storage.
4718 PERL_VERSION (Oldsyms.U):
4719 In a Perl version number such as 5.6.2, this is the 6.
4720 This value is manually set in patchlevel.h
4722 perladmin (perladmin.U):
4723 Electronic mail address of the perl5 administrator.
4726 The list of libraries needed by Perl only (any libraries needed
4727 by extensions only will by dropped, if using dynamic loading).
4729 perlpath (perlpath.U):
4730 This variable contains the eventual value of the PERLPATH symbol,
4731 which contains the name of the perl interpreter to be used in
4732 shell scripts and in the "eval 'exec'" idiom. This variable is
4733 not necessarily the pathname of the file containing the perl
4734 interpreter; you must append the executable extension (_exe) if
4735 it is not already present. Note that Perl code that runs during
4736 the Perl build process cannot reference this variable, as Perl
4737 may not have been installed, or even if installed, may be a
4738 different version of Perl.
4741 This variable is used internally by Configure to determine the
4742 full pathname (if any) of the pg program. After Configure runs,
4743 the value is reset to a plain "pg" and is not useful.
4745 phostname (myhostname.U):
4746 This variable contains the eventual value of the PHOSTNAME symbol,
4747 which is a command that can be fed to popen() to get the host name.
4748 The program should probably not presume that the domain is or isn't
4751 pidtype (pidtype.U):
4752 This variable defines PIDTYPE to be something like pid_t, int,
4753 ushort, or whatever type is used to declare process ids in the kernel.
4756 Holds the private path used by Configure to find out the libraries.
4757 Its value is prepend to libpth. This variable takes care of special
4758 machines, like the mips. Usually, it should be empty.
4761 This variable is defined but not used by Configure.
4762 The value is the empty string and is not useful.
4765 This variable is defined but not used by Configure.
4766 The value is the empty string and is not useful.
4769 This variable holds the name of the directory below which the
4770 user will install the package. Usually, this is /usr/local, and
4771 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4772 man pages in /usr/local/man, etc. It is only used to set defaults
4773 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4775 prefixexp (prefix.U):
4776 This variable holds the full absolute path of the directory below
4777 which the user will install the package. Derived from prefix.
4779 privlib (privlib.U):
4780 This variable contains the eventual value of the PRIVLIB symbol,
4781 which is the name of the private library for this package. It may
4782 have a ~ on the front. It is up to the makefile to eventually create
4783 this directory while performing installation (with ~ substitution).
4785 privlibexp (privlib.U):
4786 This variable is the ~name expanded version of privlib, so that you
4787 may use it directly in Makefiles or shell scripts.
4789 procselfexe (d_procselfexe.U):
4790 If d_procselfexe is defined, $procselfexe is the filename
4791 of the symbolic link pointing to the absolute pathname of
4792 the executing program.
4794 ptrsize (ptrsize.U):
4795 This variable contains the value of the PTRSIZE symbol, which
4796 indicates to the C program how many bytes there are in a pointer.
4798 quadkind (quadtype.U):
4799 This variable, if defined, encodes the type of a quad:
4800 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4802 quadtype (quadtype.U):
4803 This variable defines Quad_t to be something like long, int,
4804 long long, int64_t, or whatever type is used for 64-bit integers.
4806 randbits (randfunc.U):
4807 Indicates how many bits are produced by the function used to
4808 generate normalized random numbers.
4810 randfunc (randfunc.U):
4811 Indicates the name of the random number function to use.
4812 Values include drand48, random, and rand. In C programs,
4813 the 'Drand01' macro is defined to generate uniformly distributed
4814 random numbers over the range [0., 1.[ (see drand01 and nrand).
4816 random_r_proto (d_random_r.U):
4817 This variable encodes the prototype of random_r.
4818 It is zero if d_random_r is undef, and one of the
4819 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4822 randseedtype (randfunc.U):
4823 Indicates the type of the argument of the seedfunc.
4825 ranlib (orderlib.U):
4826 This variable is set to the pathname of the ranlib program, if it is
4827 needed to generate random libraries. Set to ":" if ar can generate
4828 random libraries or if random libraries are not supported
4830 rd_nodata (nblock_io.U):
4831 This variable holds the return code from read() when no data is
4832 present. It should be -1, but some systems return 0 when O_NDELAY is
4833 used, which is a shame because you cannot make the difference between
4834 no data and an EOF.. Sigh!
4836 readdir64_r_proto (d_readdir64_r.U):
4837 This variable encodes the prototype of readdir64_r.
4838 It is zero if d_readdir64_r is undef, and one of the
4839 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4842 readdir_r_proto (d_readdir_r.U):
4843 This variable encodes the prototype of readdir_r.
4844 It is zero if d_readdir_r is undef, and one of the
4845 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4848 revision (patchlevel.U):
4849 The value of revision comes from the patchlevel.h file.
4850 In a version number such as 5.6.1, this is the "5".
4851 In patchlevel.h, this is referred to as "PERL_REVISION".
4854 This variable is used internally by Configure to determine the
4855 full pathname (if any) of the rm program. After Configure runs,
4856 the value is reset to a plain "rm" and is not useful.
4859 This is a cleanup variable for try test programs.
4860 Internal Configure use only.
4863 This variable is defined but not used by Configure.
4864 The value is the empty string and is not useful.
4867 This variable contains the command used by Configure
4868 to copy and execute a cross-compiled executable in the
4869 target host. Useful and available only during Perl build.
4870 Empty string '' if not cross-compiling.
4873 This variable contains 'true' or 'false' depending whether the
4874 nm extraction should be performed or not, according to the value
4875 of usenm and the flags on the Configure command line.
4877 sched_yield (d_pthread_y.U):
4878 This variable defines the way to yield the execution
4879 of the current thread.
4881 scriptdir (scriptdir.U):
4882 This variable holds the name of the directory in which the user wants
4883 to put publicly scripts for the package in question. It is either
4884 the same directory as for binaries, or a special one that can be
4885 mounted across different architectures, like /usr/share. Programs
4886 must be prepared to deal with ~name expansion.
4888 scriptdirexp (scriptdir.U):
4889 This variable is the same as scriptdir, but is filename expanded
4890 at configuration time, for programs not wanting to bother with it.
4893 This variable is used internally by Configure to determine the
4894 full pathname (if any) of the sed program. After Configure runs,
4895 the value is reset to a plain "sed" and is not useful.
4897 seedfunc (randfunc.U):
4898 Indicates the random number generating seed function.
4899 Values include srand48, srandom, and srand.
4901 selectminbits (selectminbits.U):
4902 This variable holds the minimum number of bits operated by select.
4903 That is, if you do select(n, ...), how many bits at least will be
4904 cleared in the masks if some activity is detected. Usually this
4905 is either n or 32*ceil(n/32), especially many little-endians do
4906 the latter. This is only useful if you have select(), naturally.
4908 selecttype (selecttype.U):
4909 This variable holds the type used for the 2nd, 3rd, and 4th
4910 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4911 is defined, and 'int *' otherwise. This is only useful if you
4912 have select(), naturally.
4915 This variable is defined but not used by Configure.
4916 The value is the empty string and is not useful.
4918 setgrent_r_proto (d_setgrent_r.U):
4919 This variable encodes the prototype of setgrent_r.
4920 It is zero if d_setgrent_r is undef, and one of the
4921 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4924 sethostent_r_proto (d_sethostent_r.U):
4925 This variable encodes the prototype of sethostent_r.
4926 It is zero if d_sethostent_r is undef, and one of the
4927 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4930 setlocale_r_proto (d_setlocale_r.U):
4931 This variable encodes the prototype of setlocale_r.
4932 It is zero if d_setlocale_r is undef, and one of the
4933 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4936 setnetent_r_proto (d_setnetent_r.U):
4937 This variable encodes the prototype of setnetent_r.
4938 It is zero if d_setnetent_r is undef, and one of the
4939 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4942 setprotoent_r_proto (d_setprotoent_r.U):
4943 This variable encodes the prototype of setprotoent_r.
4944 It is zero if d_setprotoent_r is undef, and one of the
4945 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4948 setpwent_r_proto (d_setpwent_r.U):
4949 This variable encodes the prototype of setpwent_r.
4950 It is zero if d_setpwent_r is undef, and one of the
4951 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4954 setservent_r_proto (d_setservent_r.U):
4955 This variable encodes the prototype of setservent_r.
4956 It is zero if d_setservent_r is undef, and one of the
4957 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4960 sGMTIME_max (time_size.U):
4961 This variable defines the maximum value of the time_t offset that
4962 the system function gmtime () accepts
4964 sGMTIME_min (time_size.U):
4965 This variable defines the minimum value of the time_t offset that
4966 the system function gmtime () accepts
4969 This variable contains the full pathname of the shell used
4970 on this system to execute Bourne shell scripts. Usually, this will be
4971 /bin/sh, though it's possible that some systems will have /bin/ksh,
4972 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4974 This unit comes before Options.U, so you can't set sh with a '-D'
4975 option, though you can override this (and startsh)
4976 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4979 This variable is defined but not used by Configure.
4980 The value is the empty string and is not useful.
4982 sharpbang (spitshell.U):
4983 This variable contains the string #! if this system supports that
4986 shmattype (d_shmat.U):
4987 This symbol contains the type of pointer returned by shmat().
4988 It can be 'void *' or 'char *'.
4990 shortsize (intsize.U):
4991 This variable contains the value of the SHORTSIZE symbol which
4992 indicates to the C program how many bytes there are in a short.
4994 shrpenv (libperl.U):
4995 If the user builds a shared libperl.so, then we need to tell the
4996 'perl' executable where it will be able to find the installed libperl.so.
4997 One way to do this on some systems is to set the environment variable
4998 LD_RUN_PATH to the directory that will be the final location of the
4999 shared libperl.so. The makefile can use this with something like
5000 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
5002 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
5005 See the main perl Makefile.SH for actual working usage.
5007 Alternatively, we might be able to use a command line option such
5008 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
5009 $archlibexp/CORE (Linux).
5011 shsharp (spitshell.U):
5012 This variable tells further Configure units whether your sh can
5015 sig_count (sig_name.U):
5016 This variable holds a number larger than the largest valid
5017 signal number. This is usually the same as the NSIG macro.
5019 sig_name (sig_name.U):
5020 This variable holds the signal names, space separated. The leading
5021 SIG in signal name is removed. A ZERO is prepended to the list.
5022 This is currently not used, sig_name_init is used instead.
5024 sig_name_init (sig_name.U):
5025 This variable holds the signal names, enclosed in double quotes and
5026 separated by commas, suitable for use in the SIG_NAME definition
5027 below. A "ZERO" is prepended to the list, and the list is
5028 terminated with a plain 0. The leading SIG in signal names
5029 is removed. See sig_num.
5031 sig_num (sig_name.U):
5032 This variable holds the signal numbers, space separated. A ZERO is
5033 prepended to the list (corresponding to the fake SIGZERO).
5034 Those numbers correspond to the value of the signal listed
5035 in the same place within the sig_name list.
5036 This is currently not used, sig_num_init is used instead.
5038 sig_num_init (sig_name.U):
5039 This variable holds the signal numbers, enclosed in double quotes and
5040 separated by commas, suitable for use in the SIG_NUM definition
5041 below. A "ZERO" is prepended to the list, and the list is
5042 terminated with a plain 0.
5044 sig_size (sig_name.U):
5045 This variable contains the number of elements of the sig_name
5048 signal_t (d_voidsig.U):
5049 This variable holds the type of the signal handler (void or int).
5051 sitearch (sitearch.U):
5052 This variable contains the eventual value of the SITEARCH symbol,
5053 which is the name of the private library for this package. It may
5054 have a ~ on the front. It is up to the makefile to eventually create
5055 this directory while performing installation (with ~ substitution).
5056 The standard distribution will put nothing in this directory.
5057 After perl has been installed, users may install their own local
5058 architecture-dependent modules in this directory with
5059 MakeMaker Makefile.PL
5060 or equivalent. See INSTALL for details.
5062 sitearchexp (sitearch.U):
5063 This variable is the ~name expanded version of sitearch, so that you
5064 may use it directly in Makefiles or shell scripts.
5066 sitebin (sitebin.U):
5067 This variable holds the name of the directory in which the user wants
5068 to put add-on publicly executable files for the package in question. It
5069 is most often a local directory such as /usr/local/bin. Programs using
5070 this variable must be prepared to deal with ~name substitution.
5071 The standard distribution will put nothing in this directory.
5072 After perl has been installed, users may install their own local
5073 executables in this directory with
5074 MakeMaker Makefile.PL
5075 or equivalent. See INSTALL for details.
5077 sitebinexp (sitebin.U):
5078 This is the same as the sitebin variable, but is filename expanded at
5079 configuration time, for use in your makefiles.
5081 sitehtml1dir (sitehtml1dir.U):
5082 This variable contains the name of the directory in which site-specific
5083 html source pages are to be put. It is the responsibility of the
5084 Makefile.SH to get the value of this into the proper command.
5085 You must be prepared to do the ~name expansion yourself.
5086 The standard distribution will put nothing in this directory.
5087 After perl has been installed, users may install their own local
5088 html pages in this directory with
5089 MakeMaker Makefile.PL
5090 or equivalent. See INSTALL for details.
5092 sitehtml1direxp (sitehtml1dir.U):
5093 This variable is the same as the sitehtml1dir variable, but is filename
5094 expanded at configuration time, for convenient use in makefiles.
5096 sitehtml3dir (sitehtml3dir.U):
5097 This variable contains the name of the directory in which site-specific
5098 library html source pages are to be put. It is the responsibility of the
5099 Makefile.SH to get the value of this into the proper command.
5100 You must be prepared to do the ~name expansion yourself.
5101 The standard distribution will put nothing in this directory.
5102 After perl has been installed, users may install their own local
5103 library html pages in this directory with
5104 MakeMaker Makefile.PL
5105 or equivalent. See INSTALL for details.
5107 sitehtml3direxp (sitehtml3dir.U):
5108 This variable is the same as the sitehtml3dir variable, but is filename
5109 expanded at configuration time, for convenient use in makefiles.
5111 sitelib (sitelib.U):
5112 This variable contains the eventual value of the SITELIB symbol,
5113 which is the name of the private library for this package. It may
5114 have a ~ on the front. It is up to the makefile to eventually create
5115 this directory while performing installation (with ~ substitution).
5116 The standard distribution will put nothing in this directory.
5117 After perl has been installed, users may install their own local
5118 architecture-independent modules in this directory with
5119 MakeMaker Makefile.PL
5120 or equivalent. See INSTALL for details.
5122 sitelib_stem (sitelib.U):
5123 This variable is $sitelibexp with any trailing version-specific component
5124 removed. The elements in inc_version_list (inc_version_list.U) can
5125 be tacked onto this variable to generate a list of directories to search.
5127 sitelibexp (sitelib.U):
5128 This variable is the ~name expanded version of sitelib, so that you
5129 may use it directly in Makefiles or shell scripts.
5131 siteman1dir (siteman1dir.U):
5132 This variable contains the name of the directory in which site-specific
5133 manual source pages are to be put. It is the responsibility of the
5134 Makefile.SH to get the value of this into the proper command.
5135 You must be prepared to do the ~name expansion yourself.
5136 The standard distribution will put nothing in this directory.
5137 After perl has been installed, users may install their own local
5138 man1 pages in this directory with
5139 MakeMaker Makefile.PL
5140 or equivalent. See INSTALL for details.
5142 siteman1direxp (siteman1dir.U):
5143 This variable is the same as the siteman1dir variable, but is filename
5144 expanded at configuration time, for convenient use in makefiles.
5146 siteman3dir (siteman3dir.U):
5147 This variable contains the name of the directory in which site-specific
5148 library man source pages are to be put. It is the responsibility of the
5149 Makefile.SH to get the value of this into the proper command.
5150 You must be prepared to do the ~name expansion yourself.
5151 The standard distribution will put nothing in this directory.
5152 After perl has been installed, users may install their own local
5153 man3 pages in this directory with
5154 MakeMaker Makefile.PL
5155 or equivalent. See INSTALL for details.
5157 siteman3direxp (siteman3dir.U):
5158 This variable is the same as the siteman3dir variable, but is filename
5159 expanded at configuration time, for convenient use in makefiles.
5161 siteprefix (siteprefix.U):
5162 This variable holds the full absolute path of the directory below
5163 which the user will install add-on packages.
5164 See INSTALL for usage and examples.
5166 siteprefixexp (siteprefix.U):
5167 This variable holds the full absolute path of the directory below
5168 which the user will install add-on packages. Derived from siteprefix.
5170 sitescript (sitescript.U):
5171 This variable holds the name of the directory in which the user wants
5172 to put add-on publicly executable files for the package in question. It
5173 is most often a local directory such as /usr/local/bin. Programs using
5174 this variable must be prepared to deal with ~name substitution.
5175 The standard distribution will put nothing in this directory.
5176 After perl has been installed, users may install their own local
5177 scripts in this directory with
5178 MakeMaker Makefile.PL
5179 or equivalent. See INSTALL for details.
5181 sitescriptexp (sitescript.U):
5182 This is the same as the sitescript variable, but is filename expanded at
5183 configuration time, for use in your makefiles.
5185 sizesize (sizesize.U):
5186 This variable contains the size of a sizetype in bytes.
5188 sizetype (sizetype.U):
5189 This variable defines sizetype to be something like size_t,
5190 unsigned long, or whatever type is used to declare length
5191 parameters for string functions.
5194 This variable is defined but not used by Configure.
5195 The value is the empty string and is not useful.
5197 sLOCALTIME_max (time_size.U):
5198 This variable defines the maximum value of the time_t offset that
5199 the system function localtime () accepts
5201 sLOCALTIME_min (time_size.U):
5202 This variable defines the minimum value of the time_t offset that
5203 the system function localtime () accepts
5206 This variable is defined but not used by Configure.
5207 The value is the empty string and is not useful.
5210 This variable holds the extension used to identify shared libraries
5211 (also known as shared objects) on the system. Usually set to 'so'.
5213 sockethdr (d_socket.U):
5214 This variable has any cpp '-I' flags needed for socket support.
5216 socketlib (d_socket.U):
5217 This variable has the names of any libraries needed for socket support.
5219 socksizetype (socksizetype.U):
5220 This variable holds the type used for the size argument
5221 for various socket calls like accept. Usual values include
5222 socklen_t, size_t, and int.
5225 This variable is used internally by Configure to determine the
5226 full pathname (if any) of the sort program. After Configure runs,
5227 the value is reset to a plain "sort" and is not useful.
5229 spackage (package.U):
5230 This variable contains the name of the package being constructed,
5231 with the first letter uppercased, i.e. suitable for starting
5234 spitshell (spitshell.U):
5235 This variable contains the command necessary to spit out a runnable
5236 shell on this system. It is either cat or a grep '-v' for # comments.
5238 sPRId64 (quadfio.U):
5239 This variable, if defined, contains the string used by stdio to
5240 format 64-bit decimal numbers (format 'd') for output.
5242 sPRIeldbl (longdblfio.U):
5243 This variable, if defined, contains the string used by stdio to
5244 format long doubles (format 'e') for output.
5246 sPRIEUldbl (longdblfio.U):
5247 This variable, if defined, contains the string used by stdio to
5248 format long doubles (format 'E') for output.
5249 The 'U' in the name is to separate this from sPRIeldbl so that even
5250 case-blind systems can see the difference.
5252 sPRIfldbl (longdblfio.U):
5253 This variable, if defined, contains the string used by stdio to
5254 format long doubles (format 'f') for output.
5256 sPRIFUldbl (longdblfio.U):
5257 This variable, if defined, contains the string used by stdio to
5258 format long doubles (format 'F') for output.
5259 The 'U' in the name is to separate this from sPRIfldbl so that even
5260 case-blind systems can see the difference.
5262 sPRIgldbl (longdblfio.U):
5263 This variable, if defined, contains the string used by stdio to
5264 format long doubles (format 'g') for output.
5266 sPRIGUldbl (longdblfio.U):
5267 This variable, if defined, contains the string used by stdio to
5268 format long doubles (format 'G') for output.
5269 The 'U' in the name is to separate this from sPRIgldbl so that even
5270 case-blind systems can see the difference.
5272 sPRIi64 (quadfio.U):
5273 This variable, if defined, contains the string used by stdio to
5274 format 64-bit decimal numbers (format 'i') for output.
5276 sPRIo64 (quadfio.U):
5277 This variable, if defined, contains the string used by stdio to
5278 format 64-bit octal numbers (format 'o') for output.
5280 sPRIu64 (quadfio.U):
5281 This variable, if defined, contains the string used by stdio to
5282 format 64-bit unsigned decimal numbers (format 'u') for output.
5284 sPRIx64 (quadfio.U):
5285 This variable, if defined, contains the string used by stdio to
5286 format 64-bit hexadecimal numbers (format 'x') for output.
5288 sPRIXU64 (quadfio.U):
5289 This variable, if defined, contains the string used by stdio to
5290 format 64-bit hExADECimAl numbers (format 'X') for output.
5291 The 'U' in the name is to separate this from sPRIx64 so that even
5292 case-blind systems can see the difference.
5294 srand48_r_proto (d_srand48_r.U):
5295 This variable encodes the prototype of srand48_r.
5296 It is zero if d_srand48_r is undef, and one of the
5297 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
5300 srandom_r_proto (d_srandom_r.U):
5301 This variable encodes the prototype of srandom_r.
5302 It is zero if d_srandom_r is undef, and one of the
5303 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
5307 This variable holds the (possibly relative) path of the package source.
5308 It is up to the Makefile to use this variable and set VPATH accordingly
5309 to find the sources remotely. Use $pkgsrc to have an absolute path.
5311 sSCNfldbl (longdblfio.U):
5312 This variable, if defined, contains the string used by stdio to
5313 format long doubles (format 'f') for input.
5315 ssizetype (ssizetype.U):
5316 This variable defines ssizetype to be something like ssize_t,
5317 long or int. It is used by functions that return a count
5318 of bytes or an error condition. It must be a signed type.
5319 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
5321 st_dev_sign (st_dev_def.U):
5322 This variable contains the signedness of struct stat's st_dev.
5323 1 for unsigned, -1 for signed.
5325 st_dev_size (st_dev_def.U):
5326 This variable contains the size of struct stat's st_dev in bytes.
5328 st_ino_sign (st_ino_def.U):
5329 This variable contains the signedness of struct stat's st_ino.
5330 1 for unsigned, -1 for signed.
5332 st_ino_size (st_ino_def.U):
5333 This variable contains the size of struct stat's st_ino in bytes.
5335 startperl (startperl.U):
5336 This variable contains the string to put on the front of a perl
5337 script to make sure (hopefully) that it runs with perl and not some
5338 shell. Of course, that leading line must be followed by the classical
5340 eval 'exec perl -S $0 ${1+"$@"}'
5341 if $running_under_some_shell;
5342 to guarantee perl startup should the shell execute the script. Note
5343 that this magic incantation is not understood by csh.
5345 startsh (startsh.U):
5346 This variable contains the string to put on the front of a shell
5347 script to make sure (hopefully) that it runs with sh and not some
5350 static_ext (Extensions.U):
5351 This variable holds a list of XS extension files we want to
5352 link statically into the package. It is used by Makefile.
5354 stdchar (stdchar.U):
5355 This variable conditionally defines STDCHAR to be the type of char
5356 used in stdio.h. It has the values "unsigned char" or "char".
5358 stdio_base (d_stdstdio.U):
5359 This variable defines how, given a FILE pointer, fp, to access the
5360 _base field (or equivalent) of stdio.h's FILE structure. This will
5361 be used to define the macro FILE_base(fp).
5363 stdio_bufsiz (d_stdstdio.U):
5364 This variable defines how, given a FILE pointer, fp, to determine
5365 the number of bytes store in the I/O buffer pointer to by the
5366 _base field (or equivalent) of stdio.h's FILE structure. This will
5367 be used to define the macro FILE_bufsiz(fp).
5369 stdio_cnt (d_stdstdio.U):
5370 This variable defines how, given a FILE pointer, fp, to access the
5371 _cnt field (or equivalent) of stdio.h's FILE structure. This will
5372 be used to define the macro FILE_cnt(fp).
5374 stdio_filbuf (d_stdstdio.U):
5375 This variable defines how, given a FILE pointer, fp, to tell
5376 stdio to refill its internal buffers (?). This will
5377 be used to define the macro FILE_filbuf(fp).
5379 stdio_ptr (d_stdstdio.U):
5380 This variable defines how, given a FILE pointer, fp, to access the
5381 _ptr field (or equivalent) of stdio.h's FILE structure. This will
5382 be used to define the macro FILE_ptr(fp).
5384 stdio_stream_array (stdio_streams.U):
5385 This variable tells the name of the array holding the stdio streams.
5386 Usual values include _iob, __iob, and __sF.
5388 strerror_r_proto (d_strerror_r.U):
5389 This variable encodes the prototype of strerror_r.
5390 It is zero if d_strerror_r is undef, and one of the
5391 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
5395 This variable is defined but not used by Configure.
5396 The value is the empty string and is not useful.
5398 subversion (patchlevel.U):
5399 The subversion level of this package.
5400 The value of subversion comes from the patchlevel.h file.
5401 In a version number such as 5.6.1, this is the "1".
5402 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
5403 This is unique to perl.
5406 This variable holds the place where the manual is located on this
5407 system. It is not the place where the user wants to put his manual
5408 pages. Rather it is the place where Configure may look to find manual
5409 for unix commands (section 1 of the manual usually). See mansrc.
5411 sysroot (Sysroot.U):
5412 This variable is empty unless supplied by the Configure user.
5413 It can contain a path to an alternative root directory, under which
5414 headers and libraries for the compilation target can be found. This
5415 is generally used when cross-compiling using a gcc-like compiler.
5418 This variable is defined but not used by Configure.
5419 The value is the empty string and is not useful.
5422 This variable is defined but not used by Configure.
5423 The value is the empty string and is not useful.
5425 targetarch (Cross.U):
5426 If cross-compiling, this variable contains the target architecture.
5427 If not, this will be empty.
5429 targetdir (Cross.U):
5430 This variable contains a path that will be created on the target
5431 host using targetmkdir, and then used to copy the cross-compiled
5432 executables to. Defaults to '/tmp' if not set.
5434 targetenv (Cross.U):
5435 If cross-compiling, this variable can be used to modify the
5436 environment on the target system.
5437 However, how and where it's used, and even if it's used at all, is
5438 entirely dependent on both the transport mechanism (targetrun) and
5439 what the target system is. Unless the relevant documentation says
5440 otherwise, it is genereally not useful.
5442 targethost (Cross.U):
5443 This variable contains the name of a separate host machine that
5444 can be used to run compiled test programs and perl tests on.
5445 Set to empty string if not in use.
5447 targetmkdir (Cross.U):
5448 This variable contains the command used by Configure to create a
5449 new directory on the target host.
5451 targetport (Cross.U):
5452 This variable contains the number of a network port to be used to
5453 connect to the host in targethost, if unset defaults to 22 for ssh.
5456 If cross-compiling, this variable contains the location of sh on the
5458 If not, this will be the same as $sh.
5461 This variable is defined but not used by Configure.
5462 The value is the empty string and is not useful.
5465 This variable is defined but not used by Configure.
5466 The value is the empty string and is not useful.
5469 This variable is used internally by Configure to determine the
5470 full pathname (if any) of the test program. After Configure runs,
5471 the value is reset to a plain "test" and is not useful.
5473 timeincl (i_time.U):
5474 This variable holds the full path of the included time header(s).
5476 timetype (d_time.U):
5477 This variable holds the type returned by time(). It can be long,
5478 or time_t on BSD sites (in which case <sys/types.h> should be
5479 included). Anyway, the type Time_t should be used.
5481 tmpnam_r_proto (d_tmpnam_r.U):
5482 This variable encodes the prototype of tmpnam_r.
5483 It is zero if d_tmpnam_r is undef, and one of the
5484 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
5488 This variable contains the command used by Configure
5489 to copy to from the target host. Useful and available
5490 only during Perl build.
5491 The string ':' if not cross-compiling.
5494 This variable is used internally by Configure to determine the
5495 full pathname (if any) of the touch program. After Configure runs,
5496 the value is reset to a plain "touch" and is not useful.
5499 This variable is used internally by Configure to determine the
5500 full pathname (if any) of the tr program. After Configure runs,
5501 the value is reset to a plain "tr" and is not useful.
5504 This variable contains the value to be passed to the tr(1)
5505 command to transliterate a newline. Typical values are
5506 '\012' and '\n'. This is needed for EBCDIC systems where
5507 newline is not necessarily '\012'.
5510 This variable is defined but not used by Configure.
5511 The value is the empty string and is not useful.
5513 ttyname_r_proto (d_ttyname_r.U):
5514 This variable encodes the prototype of ttyname_r.
5515 It is zero if d_ttyname_r is undef, and one of the
5516 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
5520 This variable is the size of an U16 in bytes.
5523 This variable contains the C type used for Perl's U16.
5525 u32oformat (perlxvf.U):
5526 This variable contains the format string used for printing
5527 a Perl U32 as an unsigned octal integer.
5530 This variable is the size of an U32 in bytes.
5533 This variable contains the C type used for Perl's U32.
5535 u32uformat (perlxvf.U):
5536 This variable contains the format string used for printing
5537 a Perl U32 as an unsigned decimal integer.
5539 u32xformat (perlxvf.U):
5540 This variable contains the format string used for printing
5541 a Perl U32 as an unsigned hexadecimal integer in lowercase abcdef.
5543 u32XUformat (perlxvf.U):
5544 This variable contains the format string used for printing
5545 a Perl U32 as an unsigned hexadecimal integer in uppercase ABCDEF.
5548 This variable is the size of an U64 in bytes.
5551 This variable contains the C type used for Perl's U64.
5554 This variable is the size of an U8 in bytes.
5557 This variable contains the C type used for Perl's U8.
5560 This variable contains the format string used for printing a Uid_t.
5562 uidsign (uidsign.U):
5563 This variable contains the signedness of a uidtype.
5564 1 for unsigned, -1 for signed.
5566 uidsize (uidsize.U):
5567 This variable contains the size of a uidtype in bytes.
5569 uidtype (uidtype.U):
5570 This variable defines Uid_t to be something like uid_t, int,
5571 ushort, or whatever type is used to declare user ids in the kernel.
5574 This variable is used internally by Configure to determine the
5575 full pathname (if any) of the uname program. After Configure runs,
5576 the value is reset to a plain "uname" and is not useful.
5579 This variable is used internally by Configure to determine the
5580 full pathname (if any) of the uniq program. After Configure runs,
5581 the value is reset to a plain "uniq" and is not useful.
5583 uquadtype (quadtype.U):
5584 This variable defines Uquad_t to be something like unsigned long,
5585 unsigned int, unsigned long long, uint64_t, or whatever type is
5586 used for 64-bit integers.
5588 use64bitall (use64bits.U):
5589 This variable conditionally defines the USE_64_BIT_ALL symbol,
5590 and indicates that 64-bit integer types should be used
5591 when available. The maximal possible
5592 64-bitness is employed: LP64 or ILP64, meaning that you will
5593 be able to use more than 2 gigabytes of memory. This mode is
5594 even more binary incompatible than USE_64_BIT_INT. You may not
5595 be able to run the resulting executable in a 32-bit CPU at all or
5596 you may need at least to reboot your OS to 64-bit mode.
5598 use64bitint (use64bits.U):
5599 This variable conditionally defines the USE_64_BIT_INT symbol,
5600 and indicates that 64-bit integer types should be used
5601 when available. The minimal possible 64-bitness
5602 is employed, just enough to get 64-bit integers into Perl.
5603 This may mean using for example "long longs", while your memory
5604 may still be limited to 2 gigabytes.
5606 usecbacktrace (usebacktrace.U):
5607 This variable indicates whether we are compiling with backtrace
5610 usecrosscompile (Cross.U):
5611 This variable conditionally defines the USE_CROSS_COMPILE symbol,
5612 and indicates that Perl has been cross-compiled.
5614 usedefaultstrict (usedefaultstrict.U):
5615 This setting provides a mechanism for perl developers to enable
5616 strict by default. These defaults do not apply when perl is run
5620 This variable indicates that Perl was configured with development
5621 features enabled. This should not be done for production builds.
5624 This variable indicates if the system supports dynamic
5625 loading of some sort. See also dlsrc and dlobj.
5627 usedtrace (usedtrace.U):
5628 This variable indicates whether we are compiling with dtrace
5629 support. See also dtrace.
5631 usefaststdio (usefaststdio.U):
5632 This variable conditionally defines the USE_FAST_STDIO symbol,
5633 and indicates that Perl should be built to use 'fast stdio'.
5634 Defaults to define in Perls 5.8 and earlier, to undef later.
5636 useithreads (usethreads.U):
5637 This variable conditionally defines the USE_ITHREADS symbol,
5638 and indicates that Perl should be built to use the interpreter-based
5639 threading implementation.
5641 usekernprocpathname (usekernprocpathname.U):
5642 This variable, indicates that we can use sysctl with
5643 KERN_PROC_PATHNAME to get a full path for the executable, and hence
5644 convert $^X to an absolute path.
5646 uselanginfo (Extensions.U):
5647 This variable holds either 'true' or 'false' to indicate
5648 whether the I18N::Langinfo extension should be used. The sole
5649 use for this currently is to allow an easy mechanism for users to skip
5650 this extension from the Configure command line.
5652 uselargefiles (uselfs.U):
5653 This variable conditionally defines the USE_LARGE_FILES symbol,
5654 and indicates that large file interfaces should be used when
5657 uselongdouble (uselongdbl.U):
5658 This variable conditionally defines the USE_LONG_DOUBLE symbol,
5659 and indicates that long doubles should be used when available.
5661 usemallocwrap (mallocsrc.U):
5662 This variable contains y if we are wrapping malloc to prevent
5663 integer overflow during size calculations.
5665 usemorebits (usemorebits.U):
5666 This variable conditionally defines the USE_MORE_BITS symbol,
5667 and indicates that explicit 64-bit interfaces and long doubles
5668 should be used when available.
5670 usemultiplicity (usemultiplicity.U):
5671 This variable conditionally defines the MULTIPLICITY symbol,
5672 and indicates that Perl should be built to use multiplicity.
5674 usemymalloc (mallocsrc.U):
5675 This variable contains y if the malloc that comes with this package
5676 is desired over the system's version of malloc. People often include
5677 special versions of malloc for efficiency, but such versions are often
5678 less portable. See also mallocsrc and mallocobj.
5679 If this is 'y', then -lmalloc is removed from $libs.
5682 This variable contains 'true' or 'false' depending whether the
5683 nm extraction is wanted or not.
5685 usensgetexecutablepath (usensgetexecutablepath.U):
5686 This symbol, if defined, indicates that we can use _NSGetExecutablePath
5687 and realpath to get a full path for the executable, and hence convert
5688 $^X to an absolute path.
5690 useopcode (Extensions.U):
5691 This variable holds either 'true' or 'false' to indicate
5692 whether the Opcode extension should be used. The sole
5693 use for this currently is to allow an easy mechanism
5694 for users to skip the Opcode extension from the Configure
5697 useperlio (useperlio.U):
5698 This variable conditionally defines the USE_PERLIO symbol,
5699 and indicates that the PerlIO abstraction should be
5702 useposix (Extensions.U):
5703 This variable holds either 'true' or 'false' to indicate
5704 whether the POSIX extension should be used. The sole
5705 use for this currently is to allow an easy mechanism
5706 for hints files to indicate that POSIX will not compile
5707 on a particular system.
5709 usequadmath (usequadmath.U):
5710 This variable conditionally defines the USE_QUADMATH symbol,
5711 and indicates that the quadmath library __float128 long doubles
5712 should be used when available.
5714 usereentrant (usethreads.U):
5715 This variable conditionally defines the USE_REENTRANT_API symbol,
5716 which indicates that the thread code may try to use the various
5717 _r versions of library functions. This is only potentially
5718 meaningful if usethreads is set and is very experimental, it is
5719 not even prompted for.
5721 userelocatableinc (bin.U):
5722 This variable is set to true to indicate that perl should relocate
5723 @INC entries at runtime based on the path to the perl binary.
5724 Any @INC paths starting ".../" are relocated relative to the directory
5725 containing the perl binary, and a logical cleanup of the path is then
5726 made around the join point (removing "dir/../" pairs)
5728 useshrplib (libperl.U):
5729 This variable is set to 'true' if the user wishes
5730 to build a shared libperl, and 'false' otherwise.
5732 usesitecustomize (d_sitecustomize.U):
5733 This variable is set to true when the user requires a mechanism that
5734 allows the sysadmin to add entries to @INC at runtime. This variable
5735 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
5737 usesocks (usesocks.U):
5738 This variable conditionally defines the USE_SOCKS symbol,
5739 and indicates that Perl should be built to use SOCKS.
5741 usethreads (usethreads.U):
5742 This variable conditionally defines the USE_THREADS symbol,
5743 and indicates that Perl should be built to use threads.
5745 usevendorprefix (vendorprefix.U):
5746 This variable tells whether the vendorprefix
5747 and consequently other vendor* paths are in use.
5749 useversionedarchname (archname.U):
5750 This variable indicates whether to include the $api_versionstring
5751 as a component of the $archname.
5753 usevfork (d_vfork.U):
5754 This variable is set to true when the user accepts to use vfork.
5755 It is set to false when no vfork is available or when the user
5756 explicitly requests not to use vfork.
5759 This variable holds the path of the include files, which is
5760 usually /usr/include. It is mainly used by other Configure units.
5763 This variable is defined but not used by Configure.
5764 The value is the empty string and is not useful.
5766 uvoformat (perlxvf.U):
5767 This variable contains the format string used for printing
5768 a Perl UV as an unsigned octal integer.
5771 This variable is the size of a UV in bytes.
5774 This variable contains the C type used for Perl's UV.
5776 uvuformat (perlxvf.U):
5777 This variable contains the format string used for printing
5778 a Perl UV as an unsigned decimal integer.
5780 uvxformat (perlxvf.U):
5781 This variable contains the format string used for printing
5782 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
5784 uvXUformat (perlxvf.U):
5785 This variable contains the format string used for printing
5786 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
5788 vendorarch (vendorarch.U):
5789 This variable contains the value of the PERL_VENDORARCH symbol.
5790 It may have a ~ on the front.
5791 The standard distribution will put nothing in this directory.
5792 Vendors who distribute perl may wish to place their own
5793 architecture-dependent modules and extensions in this directory with
5794 MakeMaker Makefile.PL INSTALLDIRS=vendor
5795 or equivalent. See INSTALL for details.
5797 vendorarchexp (vendorarch.U):
5798 This variable is the ~name expanded version of vendorarch, so that you
5799 may use it directly in Makefiles or shell scripts.
5801 vendorbin (vendorbin.U):
5802 This variable contains the eventual value of the VENDORBIN symbol.
5803 It may have a ~ on the front.
5804 The standard distribution will put nothing in this directory.
5805 Vendors who distribute perl may wish to place additional
5806 binaries in this directory with
5807 MakeMaker Makefile.PL INSTALLDIRS=vendor
5808 or equivalent. See INSTALL for details.
5810 vendorbinexp (vendorbin.U):
5811 This variable is the ~name expanded version of vendorbin, so that you
5812 may use it directly in Makefiles or shell scripts.
5814 vendorhtml1dir (vendorhtml1dir.U):
5815 This variable contains the name of the directory for html
5816 pages. It may have a ~ on the front.
5817 The standard distribution will put nothing in this directory.
5818 Vendors who distribute perl may wish to place their own
5819 html pages in this directory with
5820 MakeMaker Makefile.PL INSTALLDIRS=vendor
5821 or equivalent. See INSTALL for details.
5823 vendorhtml1direxp (vendorhtml1dir.U):
5824 This variable is the ~name expanded version of vendorhtml1dir, so that you
5825 may use it directly in Makefiles or shell scripts.
5827 vendorhtml3dir (vendorhtml3dir.U):
5828 This variable contains the name of the directory for html
5829 library pages. It may have a ~ on the front.
5830 The standard distribution will put nothing in this directory.
5831 Vendors who distribute perl may wish to place their own
5832 html pages for modules and extensions in this directory with
5833 MakeMaker Makefile.PL INSTALLDIRS=vendor
5834 or equivalent. See INSTALL for details.
5836 vendorhtml3direxp (vendorhtml3dir.U):
5837 This variable is the ~name expanded version of vendorhtml3dir, so that you
5838 may use it directly in Makefiles or shell scripts.
5840 vendorlib (vendorlib.U):
5841 This variable contains the eventual value of the VENDORLIB symbol,
5842 which is the name of the private library for this package.
5843 The standard distribution will put nothing in this directory.
5844 Vendors who distribute perl may wish to place their own
5845 modules in this directory with
5846 MakeMaker Makefile.PL INSTALLDIRS=vendor
5847 or equivalent. See INSTALL for details.
5849 vendorlib_stem (vendorlib.U):
5850 This variable is $vendorlibexp with any trailing version-specific component
5851 removed. The elements in inc_version_list (inc_version_list.U) can
5852 be tacked onto this variable to generate a list of directories to search.
5854 vendorlibexp (vendorlib.U):
5855 This variable is the ~name expanded version of vendorlib, so that you
5856 may use it directly in Makefiles or shell scripts.
5858 vendorman1dir (vendorman1dir.U):
5859 This variable contains the name of the directory for man1
5860 pages. It may have a ~ on the front.
5861 The standard distribution will put nothing in this directory.
5862 Vendors who distribute perl may wish to place their own
5863 man1 pages in this directory with
5864 MakeMaker Makefile.PL INSTALLDIRS=vendor
5865 or equivalent. See INSTALL for details.
5867 vendorman1direxp (vendorman1dir.U):
5868 This variable is the ~name expanded version of vendorman1dir, so that you
5869 may use it directly in Makefiles or shell scripts.
5871 vendorman3dir (vendorman3dir.U):
5872 This variable contains the name of the directory for man3
5873 pages. It may have a ~ on the front.
5874 The standard distribution will put nothing in this directory.
5875 Vendors who distribute perl may wish to place their own
5876 man3 pages in this directory with
5877 MakeMaker Makefile.PL INSTALLDIRS=vendor
5878 or equivalent. See INSTALL for details.
5880 vendorman3direxp (vendorman3dir.U):
5881 This variable is the ~name expanded version of vendorman3dir, so that you
5882 may use it directly in Makefiles or shell scripts.
5884 vendorprefix (vendorprefix.U):
5885 This variable holds the full absolute path of the directory below
5886 which the vendor will install add-on packages.
5887 See INSTALL for usage and examples.
5889 vendorprefixexp (vendorprefix.U):
5890 This variable holds the full absolute path of the directory below
5891 which the vendor will install add-on packages. Derived from vendorprefix.
5893 vendorscript (vendorscript.U):
5894 This variable contains the eventual value of the VENDORSCRIPT symbol.
5895 It may have a ~ on the front.
5896 The standard distribution will put nothing in this directory.
5897 Vendors who distribute perl may wish to place additional
5898 executable scripts in this directory with
5899 MakeMaker Makefile.PL INSTALLDIRS=vendor
5900 or equivalent. See INSTALL for details.
5902 vendorscriptexp (vendorscript.U):
5903 This variable is the ~name expanded version of vendorscript, so that you
5904 may use it directly in Makefiles or shell scripts.
5906 version (patchlevel.U):
5907 The full version number of this package, such as 5.6.1 (or 5_6_1).
5908 This combines revision, patchlevel, and subversion to get the
5909 full version number, including any possible subversions.
5910 This is suitable for use as a directory name, and hence is
5911 filesystem dependent.
5913 version_patchlevel_string (patchlevel.U):
5914 This is a string combining version, subversion and
5915 perl_patchlevel (if perl_patchlevel is non-zero).
5916 It is typically something like
5917 'version 7 subversion 1' or
5918 'version 7 subversion 1 patchlevel 11224'
5919 It is computed here to avoid duplication of code in myconfig.SH
5922 versiononly (versiononly.U):
5923 If set, this symbol indicates that only the version-specific
5924 components of a perl installation should be installed.
5925 This may be useful for making a test installation of a new
5926 version without disturbing the existing installation.
5927 Setting versiononly is equivalent to setting installperl's -v option.
5928 In particular, the non-versioned scripts and programs such as
5929 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5930 (see INSTALL for a more complete list). Nor are the man
5932 Usually, this is undef.
5935 This variable is defined but not used by Configure.
5936 The value is the empty string and is not useful.
5939 This variable holds extra path (space-separated) used to find
5940 libraries on this platform, for example CPU-specific libraries
5941 (on multi-CPU platforms) may be listed here.
5943 xlocale_needed (d_newlocale.U):
5944 This symbol, if defined, indicates that the C program should
5945 include <xlocale.h> to get newlocale() and its friends.
5948 This variable holds the name of the compiler compiler we
5949 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5952 This variable contains any additional yacc flags desired by the
5953 user. It is up to the Makefile to use this.
5956 This variable is defined but not used by Configure.
5957 The value is the empty string and is not useful.
5960 This variable is used internally by Configure to determine the
5961 full pathname (if any) of the zip program. After Configure runs,
5962 the value is reset to a plain "zip" and is not useful.