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.
898 d_fgetpos (d_fgetpos.U):
899 This variable conditionally defines HAS_FGETPOS if fgetpos() is
900 available to get the file position indicator.
902 d_finite (d_finite.U):
903 This variable conditionally defines the HAS_FINITE symbol, which
904 indicates to the C program that the finite() routine is available.
906 d_finitel (d_finitel.U):
907 This variable conditionally defines the HAS_FINITEL symbol, which
908 indicates to the C program that the finitel() routine is available.
910 d_flexfnam (d_flexfnam.U):
911 This variable conditionally defines the FLEXFILENAMES symbol, which
912 indicates that the system supports filenames longer than 14 characters.
915 This variable conditionally defines HAS_FLOCK if flock() is
916 available to do file locking.
918 d_flockproto (d_flockproto.U):
919 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
920 which indicates to the C program that the system provides
921 a prototype for the flock() function. Otherwise, it is
922 up to the program to supply one.
925 This variable conditionally defines the HAS_FMA symbol, which
926 indicates to the C program that the fma() routine is available.
929 This variable conditionally defines the HAS_FMAX symbol, which
930 indicates to the C program that the fmax() routine is available.
933 This variable conditionally defines the HAS_FMIN symbol, which
934 indicates to the C program that the fmin() routine is available.
937 This variable conditionally defines the HAS_FORK symbol, which
938 indicates to the C program that the fork() routine is available.
940 d_fp_class (d_fp_class.U):
941 This variable conditionally defines the HAS_FP_CLASS symbol, which
942 indicates to the C program that the fp_class() routine is available.
944 d_fp_classify (d_fpclassify.U):
945 This variable conditionally defines the HAS_FP_CLASSIFY symbol, which
946 indicates to the C program that the fp_classify() routine is available.
948 d_fp_classl (d_fp_classl.U):
949 This variable conditionally defines the HAS_FP_CLASSL symbol, which
950 indicates to the C program that the fp_classl() routine is available.
952 d_fpathconf (d_pathconf.U):
953 This variable conditionally defines the HAS_FPATHCONF symbol, which
954 indicates to the C program that the pathconf() routine is available
955 to determine file-system related limits and options associated
956 with a given open file descriptor.
958 d_fpclass (d_fpclass.U):
959 This variable conditionally defines the HAS_FPCLASS symbol, which
960 indicates to the C program that the fpclass() routine is available.
962 d_fpclassify (d_fpclassify.U):
963 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
964 indicates to the C program that the fpclassify() routine is available.
966 d_fpclassl (d_fpclassl.U):
967 This variable conditionally defines the HAS_FPCLASSL symbol, which
968 indicates to the C program that the fpclassl() routine is available.
970 d_fpgetround (d_fpgetround.U):
971 This variable conditionally defines HAS_FPGETROUND if fpgetround()
972 is available to get the floating point rounding mode.
974 d_fpos64_t (d_fpos64_t.U):
975 This symbol will be defined if the C compiler supports fpos64_t.
977 d_freelocale (d_newlocale.U):
978 This variable conditionally defines the HAS_FREELOCALE symbol, which
979 indicates to the C program that the freelocale() routine is available
980 to deallocates the resources associated with a locale object.
982 d_frexpl (d_frexpl.U):
983 This variable conditionally defines the HAS_FREXPL symbol, which
984 indicates to the C program that the frexpl() routine is available.
986 d_fs_data_s (d_fs_data_s.U):
987 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
988 which indicates that the struct fs_data is supported.
990 d_fseeko (d_fseeko.U):
991 This variable conditionally defines the HAS_FSEEKO symbol, which
992 indicates to the C program that the fseeko() routine is available.
994 d_fsetpos (d_fsetpos.U):
995 This variable conditionally defines HAS_FSETPOS if fsetpos() is
996 available to set the file position indicator.
998 d_fstatfs (d_fstatfs.U):
999 This variable conditionally defines the HAS_FSTATFS symbol, which
1000 indicates to the C program that the fstatfs() routine is available.
1002 d_fstatvfs (d_statvfs.U):
1003 This variable conditionally defines the HAS_FSTATVFS symbol, which
1004 indicates to the C program that the fstatvfs() routine is available.
1006 d_fsync (d_fsync.U):
1007 This variable conditionally defines the HAS_FSYNC symbol, which
1008 indicates to the C program that the fsync() routine is available.
1010 d_ftello (d_ftello.U):
1011 This variable conditionally defines the HAS_FTELLO symbol, which
1012 indicates to the C program that the ftello() routine is available.
1014 d_ftime (d_ftime.U):
1015 This variable conditionally defines the HAS_FTIME symbol, which indicates
1016 that the ftime() routine exists. The ftime() routine is basically
1017 a sub-second accuracy clock.
1019 d_futimes (d_futimes.U):
1020 This variable conditionally defines the HAS_FUTIMES symbol, which
1021 indicates to the C program that the futimes() routine is available.
1023 d_gai_strerror (d_gai_strerror.U):
1024 This variable conditionally defines the HAS_GAI_STRERROR symbol
1025 if the gai_strerror() routine is available and can be used to
1026 translate error codes returned by getaddrinfo() into human
1029 d_Gconvert (d_gconvert.U):
1030 This variable holds what Gconvert is defined as to convert
1031 floating point numbers into strings. By default, Configure
1032 sets this macro to use the first of gconvert, gcvt, or sprintf
1033 that pass sprintf-%g-like behavior tests. If perl is using
1034 long doubles, the macro uses the first of the following
1035 functions that pass Configure's tests: qgcvt, sprintf (if
1036 Configure knows how to make sprintf format long doubles--see
1037 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
1038 The gconvert_preference and gconvert_ld_preference variables
1039 can be used to alter Configure's preferences, for doubles and
1040 long doubles, respectively. If present, they contain a
1041 space-separated list of one or more of the above function
1042 names in the order they should be tried.
1044 d_Gconvert may be set to override Configure with a platform-
1045 specific function. If this function expects a double, a
1046 different value may need to be set by the uselongdouble.cbu
1047 call-back unit so that long doubles can be formatted without
1050 d_gdbm_ndbm_h_uses_prototypes (i_ndbm.U):
1051 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1052 which indicates that the gdbm-ndbm.h include file uses real ANSI C
1053 prototypes instead of K&R style function declarations. K&R style
1054 declarations are unsupported in C++, so the include file requires
1055 special handling when using a C++ compiler and this variable is
1056 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1057 to get the same information for alternative ndbm.h include files.
1059 d_gdbmndbm_h_uses_prototypes (i_ndbm.U):
1060 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1061 which indicates that the gdbm/ndbm.h include file uses real ANSI C
1062 prototypes instead of K&R style function declarations. K&R style
1063 declarations are unsupported in C++, so the include file requires
1064 special handling when using a C++ compiler and this variable is
1065 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1066 to get the same information for alternative ndbm.h include files.
1068 d_getaddrinfo (d_getaddrinfo.U):
1069 This variable conditionally defines the HAS_GETADDRINFO symbol,
1070 which indicates to the C program that the getaddrinfo() function
1073 d_getcwd (d_getcwd.U):
1074 This variable conditionally defines the HAS_GETCWD symbol, which
1075 indicates to the C program that the getcwd() routine is available
1076 to get the current working directory.
1078 d_getenv_preserves_other_thread (d_getenv_thread.U):
1079 This variable conditionally defines the GETENV_PRESERVES_OTHER_THREAD
1080 symbol, which indicates to the C program that the getenv() system call
1081 does not zap the static buffer in a different thread.
1083 d_getespwnam (d_getespwnam.U):
1084 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
1085 available to retrieve enhanced (shadow) password entries by name.
1087 d_getfsstat (d_getfsstat.U):
1088 This variable conditionally defines the HAS_GETFSSTAT symbol, which
1089 indicates to the C program that the getfsstat() routine is available.
1091 d_getgrent (d_getgrent.U):
1092 This variable conditionally defines the HAS_GETGRENT symbol, which
1093 indicates to the C program that the getgrent() routine is available
1094 for sequential access of the group database.
1096 d_getgrent_r (d_getgrent_r.U):
1097 This variable conditionally defines the HAS_GETGRENT_R symbol,
1098 which indicates to the C program that the getgrent_r()
1099 routine is available.
1101 d_getgrgid_r (d_getgrgid_r.U):
1102 This variable conditionally defines the HAS_GETGRGID_R symbol,
1103 which indicates to the C program that the getgrgid_r()
1104 routine is available.
1106 d_getgrnam_r (d_getgrnam_r.U):
1107 This variable conditionally defines the HAS_GETGRNAM_R symbol,
1108 which indicates to the C program that the getgrnam_r()
1109 routine is available.
1111 d_getgrps (d_getgrps.U):
1112 This variable conditionally defines the HAS_GETGROUPS symbol, which
1113 indicates to the C program that the getgroups() routine is available
1114 to get the list of process groups.
1116 d_gethbyaddr (d_gethbyad.U):
1117 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
1118 indicates to the C program that the gethostbyaddr() routine is available
1119 to look up hosts by their IP addresses.
1121 d_gethbyname (d_gethbynm.U):
1122 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
1123 indicates to the C program that the gethostbyname() routine is available
1124 to look up host names in some data base or other.
1126 d_gethent (d_gethent.U):
1127 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
1128 available to look up host names in some data base or another.
1130 d_gethname (d_gethname.U):
1131 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
1132 indicates to the C program that the gethostname() routine may be
1133 used to derive the host name.
1135 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
1136 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
1137 which indicates to the C program that the gethostbyaddr_r()
1138 routine is available.
1140 d_gethostbyname_r (d_gethostbyname_r.U):
1141 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
1142 which indicates to the C program that the gethostbyname_r()
1143 routine is available.
1145 d_gethostent_r (d_gethostent_r.U):
1146 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
1147 which indicates to the C program that the gethostent_r()
1148 routine is available.
1150 d_gethostprotos (d_gethostprotos.U):
1151 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
1152 which indicates to the C program that <netdb.h> supplies
1153 prototypes for the various gethost*() functions.
1154 See also netdbtype.U for probing for various netdb types.
1156 d_getitimer (d_getitimer.U):
1157 This variable conditionally defines the HAS_GETITIMER symbol, which
1158 indicates to the C program that the getitimer() routine is available.
1160 d_getlogin (d_getlogin.U):
1161 This variable conditionally defines the HAS_GETLOGIN symbol, which
1162 indicates to the C program that the getlogin() routine is available
1163 to get the login name.
1165 d_getlogin_r (d_getlogin_r.U):
1166 This variable conditionally defines the HAS_GETLOGIN_R symbol,
1167 which indicates to the C program that the getlogin_r()
1168 routine is available.
1170 d_getmnt (d_getmnt.U):
1171 This variable conditionally defines the HAS_GETMNT symbol, which
1172 indicates to the C program that the getmnt() routine is available
1173 to retrieve one or more mount info blocks by filename.
1175 d_getmntent (d_getmntent.U):
1176 This variable conditionally defines the HAS_GETMNTENT symbol, which
1177 indicates to the C program that the getmntent() routine is available
1178 to iterate through mounted files to get their mount info.
1180 d_getnameinfo (d_getnameinfo.U):
1181 This variable conditionally defines the HAS_GETNAMEINFO symbol,
1182 which indicates to the C program that the getnameinfo() function
1185 d_getnbyaddr (d_getnbyad.U):
1186 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
1187 indicates to the C program that the getnetbyaddr() routine is available
1188 to look up networks by their IP addresses.
1190 d_getnbyname (d_getnbynm.U):
1191 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
1192 indicates to the C program that the getnetbyname() routine is available
1193 to look up networks by their names.
1195 d_getnent (d_getnent.U):
1196 This variable conditionally defines HAS_GETNETENT if getnetent() is
1197 available to look up network names in some data base or another.
1199 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
1200 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
1201 which indicates to the C program that the getnetbyaddr_r()
1202 routine is available.
1204 d_getnetbyname_r (d_getnetbyname_r.U):
1205 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
1206 which indicates to the C program that the getnetbyname_r()
1207 routine is available.
1209 d_getnetent_r (d_getnetent_r.U):
1210 This variable conditionally defines the HAS_GETNETENT_R symbol,
1211 which indicates to the C program that the getnetent_r()
1212 routine is available.
1214 d_getnetprotos (d_getnetprotos.U):
1215 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1216 which indicates to the C program that <netdb.h> supplies
1217 prototypes for the various getnet*() functions.
1218 See also netdbtype.U for probing for various netdb types.
1220 d_getpagsz (d_getpagsz.U):
1221 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1222 is available to get the system page size.
1224 d_getpbyname (d_getprotby.U):
1225 This variable conditionally defines the HAS_GETPROTOBYNAME
1226 symbol, which indicates to the C program that the
1227 getprotobyname() routine is available to look up protocols
1230 d_getpbynumber (d_getprotby.U):
1231 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1232 symbol, which indicates to the C program that the
1233 getprotobynumber() routine is available to look up protocols
1236 d_getpent (d_getpent.U):
1237 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1238 available to look up protocols in some data base or another.
1240 d_getpgid (d_getpgid.U):
1241 This variable conditionally defines the HAS_GETPGID symbol, which
1242 indicates to the C program that the getpgid(pid) function
1243 is available to get the process group id.
1245 d_getpgrp (d_getpgrp.U):
1246 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1247 available to get the current process group.
1249 d_getpgrp2 (d_getpgrp2.U):
1250 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1251 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1252 is available to get the current process group.
1254 d_getppid (d_getppid.U):
1255 This variable conditionally defines the HAS_GETPPID symbol, which
1256 indicates to the C program that the getppid() routine is available
1257 to get the parent process ID.
1259 d_getprior (d_getprior.U):
1260 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1261 is available to get a process's priority.
1263 d_getprotobyname_r (d_getprotobyname_r.U):
1264 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1265 which indicates to the C program that the getprotobyname_r()
1266 routine is available.
1268 d_getprotobynumber_r (d_getprotobynumber_r.U):
1269 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1270 which indicates to the C program that the getprotobynumber_r()
1271 routine is available.
1273 d_getprotoent_r (d_getprotoent_r.U):
1274 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1275 which indicates to the C program that the getprotoent_r()
1276 routine is available.
1278 d_getprotoprotos (d_getprotoprotos.U):
1279 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1280 which indicates to the C program that <netdb.h> supplies
1281 prototypes for the various getproto*() functions.
1282 See also netdbtype.U for probing for various netdb types.
1284 d_getprpwnam (d_getprpwnam.U):
1285 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1286 available to retrieve protected (shadow) password entries by name.
1288 d_getpwent (d_getpwent.U):
1289 This variable conditionally defines the HAS_GETPWENT symbol, which
1290 indicates to the C program that the getpwent() routine is available
1291 for sequential access of the passwd database.
1293 d_getpwent_r (d_getpwent_r.U):
1294 This variable conditionally defines the HAS_GETPWENT_R symbol,
1295 which indicates to the C program that the getpwent_r()
1296 routine is available.
1298 d_getpwnam_r (d_getpwnam_r.U):
1299 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1300 which indicates to the C program that the getpwnam_r()
1301 routine is available.
1303 d_getpwuid_r (d_getpwuid_r.U):
1304 This variable conditionally defines the HAS_GETPWUID_R symbol,
1305 which indicates to the C program that the getpwuid_r()
1306 routine is available.
1308 d_getsbyname (d_getsrvby.U):
1309 This variable conditionally defines the HAS_GETSERVBYNAME
1310 symbol, which indicates to the C program that the
1311 getservbyname() routine is available to look up services
1314 d_getsbyport (d_getsrvby.U):
1315 This variable conditionally defines the HAS_GETSERVBYPORT
1316 symbol, which indicates to the C program that the
1317 getservbyport() routine is available to look up services
1320 d_getsent (d_getsent.U):
1321 This variable conditionally defines HAS_GETSERVENT if getservent() is
1322 available to look up network services in some data base or another.
1324 d_getservbyname_r (d_getservbyname_r.U):
1325 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1326 which indicates to the C program that the getservbyname_r()
1327 routine is available.
1329 d_getservbyport_r (d_getservbyport_r.U):
1330 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1331 which indicates to the C program that the getservbyport_r()
1332 routine is available.
1334 d_getservent_r (d_getservent_r.U):
1335 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1336 which indicates to the C program that the getservent_r()
1337 routine is available.
1339 d_getservprotos (d_getservprotos.U):
1340 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1341 which indicates to the C program that <netdb.h> supplies
1342 prototypes for the various getserv*() functions.
1343 See also netdbtype.U for probing for various netdb types.
1345 d_getspnam (d_getspnam.U):
1346 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1347 available to retrieve SysV shadow password entries by name.
1349 d_getspnam_r (d_getspnam_r.U):
1350 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1351 which indicates to the C program that the getspnam_r()
1352 routine is available.
1354 d_gettimeod (d_ftime.U):
1355 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1356 indicates that the gettimeofday() system call exists (to obtain a
1357 sub-second accuracy clock). You should probably include <sys/resource.h>.
1359 d_gmtime64 (d_timefuncs64.U):
1360 This variable conditionally defines the HAS_GMTIME64 symbol, which
1361 indicates to the C program that the gmtime64 () routine is available.
1363 d_gmtime_r (d_gmtime_r.U):
1364 This variable conditionally defines the HAS_GMTIME_R symbol,
1365 which indicates to the C program that the gmtime_r()
1366 routine is available.
1368 d_gnulibc (d_gnulibc.U):
1369 Defined if we're dealing with the GNU C Library.
1371 d_grpasswd (i_grp.U):
1372 This variable conditionally defines GRPASSWD, which indicates
1373 that struct group in <grp.h> contains gr_passwd.
1375 d_has_C_UTF8 (d_setlocale.U):
1376 This variable is set to either "true" or "false" depending on
1377 whether the compilation system supports the C.UTF-8 locale.
1379 d_hasmntopt (d_hasmntopt.U):
1380 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1381 indicates to the C program that the hasmntopt() routine is available
1382 to query the mount options of file systems.
1384 d_htonl (d_htonl.U):
1385 This variable conditionally defines HAS_HTONL if htonl() and its
1386 friends are available to do network order byte swapping.
1388 d_hypot (d_hypot.U):
1389 This variable conditionally defines HAS_HYPOT if hypot is available
1390 for numerically stable hypotenuse function.
1392 d_ilogb (d_ilogb.U):
1393 This variable conditionally defines the HAS_ILOGB symbol, which
1394 indicates to the C program that the ilogb() routine is available
1395 for extracting the exponent of double x as a signed integer.
1397 d_ilogbl (d_ilogbl.U):
1398 This variable conditionally defines the HAS_ILOGBL symbol, which
1399 indicates to the C program that the ilogbl() routine is available
1400 for extracting the exponent of long double x as a signed integer.
1401 If scalbnl is also present we can emulate frexpl.
1403 d_inc_version_list (inc_version_list.U):
1404 This variable conditionally defines PERL_INC_VERSION_LIST.
1405 It is set to undef when PERL_INC_VERSION_LIST is empty.
1407 d_inetaton (d_inetaton.U):
1408 This variable conditionally defines the HAS_INET_ATON symbol, which
1409 indicates to the C program that the inet_aton() function is available
1410 to parse IP address "dotted-quad" strings.
1412 d_inetntop (d_inetntop.U):
1413 This variable conditionally defines the HAS_INETNTOP symbol,
1414 which indicates to the C program that the inet_ntop() function
1417 d_inetpton (d_inetpton.U):
1418 This variable conditionally defines the HAS_INETPTON symbol,
1419 which indicates to the C program that the inet_pton() function
1422 d_int64_t (d_int64_t.U):
1423 This symbol will be defined if the C compiler supports int64_t.
1425 d_ip_mreq (d_socket.U):
1426 This variable conditionally defines the HAS_IP_MREQ symbol, which
1427 indicates the availability of a struct ip_mreq.
1429 d_ip_mreq_source (d_socket.U):
1430 This variable conditionally defines the HAS_IP_MREQ_SOURCE symbol,
1431 which indicates the availability of a struct ip_mreq_source.
1433 d_ipv6_mreq (d_socket.U):
1434 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
1435 indicates the availability of a struct ipv6_mreq.
1437 d_ipv6_mreq_source (d_socket.U):
1438 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE symbol,
1439 which indicates the availability of a struct ipv6_mreq_source.
1441 d_isascii (d_isascii.U):
1442 This variable conditionally defines the HAS_ISASCII constant,
1443 which indicates to the C program that isascii() is available.
1445 d_isblank (d_isblank.U):
1446 This variable conditionally defines the HAS_ISBLANK constant,
1447 which indicates to the C program that isblank() is available.
1449 d_isfinite (d_isfinite.U):
1450 This variable conditionally defines the HAS_ISFINITE symbol, which
1451 indicates to the C program that the isfinite() routine is available.
1453 d_isfinitel (d_isfinitel.U):
1454 This variable conditionally defines the HAS_ISFINITEL symbol, which
1455 indicates to the C program that the isfinitel() routine is available.
1457 d_isinf (d_isinf.U):
1458 This variable conditionally defines the HAS_ISINF symbol, which
1459 indicates to the C program that the isinf() routine is available.
1461 d_isinfl (d_isinfl.U):
1462 This variable conditionally defines the HAS_ISINFL symbol, which
1463 indicates to the C program that the isinfl() routine is available.
1465 d_isless (d_isless.U):
1466 This variable conditionally defines the HAS_ISLESS symbol, which
1467 indicates to the C program that the isless() routine is available.
1469 d_isnan (d_isnan.U):
1470 This variable conditionally defines the HAS_ISNAN symbol, which
1471 indicates to the C program that the isnan() routine is available.
1473 d_isnanl (d_isnanl.U):
1474 This variable conditionally defines the HAS_ISNANL symbol, which
1475 indicates to the C program that the isnanl() routine is available.
1477 d_isnormal (d_isnormal.U):
1478 This variable conditionally defines the HAS_ISNORMAL symbol, which
1479 indicates to the C program that the isnormal() routine is available.
1482 This variable conditionally defines the HAS_J0 symbol, which
1483 indicates to the C program that the j0() routine is available.
1486 This variable conditionally defines the HAS_J0L symbol, which
1487 indicates to the C program that the j0l() routine is available.
1489 d_killpg (d_killpg.U):
1490 This variable conditionally defines the HAS_KILLPG symbol, which
1491 indicates to the C program that the killpg() routine is available
1492 to kill process groups.
1494 d_lc_monetary_2008 (d_lc_monetary_2008.U):
1495 This variable conditionally defines HAS_LC_MONETARY_2008 if libc
1496 has the international currency locale rules from POSIX
1499 d_lchown (d_lchown.U):
1500 This variable conditionally defines the HAS_LCHOWN symbol, which
1501 indicates to the C program that the lchown() routine is available
1502 to operate on a symbolic link (instead of following the link).
1504 d_ldbl_dig (d_ldbl_dig.U):
1505 This variable conditionally defines d_ldbl_dig if this system's
1506 header files provide LDBL_DIG, which is the number of significant
1507 digits in a long double precision number.
1509 d_ldexpl (d_longdbl.U):
1510 This variable conditionally defines the HAS_LDEXPL symbol, which
1511 indicates to the C program that the ldexpl() routine is available.
1513 d_lgamma (d_lgamma.U):
1514 This variable conditionally defines the HAS_LGAMMA symbol, which
1515 indicates to the C program that the lgamma() routine is available
1516 for the log gamma function. See also d_tgamma and d_lgamma_r.
1518 d_lgamma_r (d_lgamma_r.U):
1519 This variable conditionally defines the HAS_LGAMMA_R symbol, which
1520 indicates to the C program that the lgamma_r() routine is available
1521 for the log gamma function, without using the global signgam variable.
1523 d_libm_lib_version (d_libm_lib_version.U):
1524 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1525 which indicates to the C program that math.h defines _LIB_VERSION
1526 being available in libm
1528 d_libname_unique (so.U):
1529 This variable is defined if the target system insists on unique
1530 basenames for shared library files. This is currently true on Android,
1531 false everywhere else we know of.
1532 Defaults to 'undef'.
1535 This variable conditionally defines HAS_LINK if link() is
1536 available to create hard links.
1538 d_linkat (d_fsat.U):
1539 This variable conditionally defines the HAS_LINKAT symbol, which
1540 indicates the POSIX linkat() function is available.
1542 d_llrint (d_llrint.U):
1543 This variable conditionally defines the HAS_LLRINT symbol, which
1544 indicates to the C program that the llrint() routine is available
1545 to return the long long value closest to a double (according
1546 to the current rounding mode).
1548 d_llrintl (d_llrintl.U):
1549 This variable conditionally defines the HAS_LLRINTL symbol, which
1550 indicates to the C program that the llrintl() routine is available
1551 to return the long long value closest to a long double (according
1552 to the current rounding mode).
1554 d_llround (d_llround.U):
1555 This variable conditionally defines the HAS_LLROUND symbol, which
1556 indicates to the C program that the llround() routine is available
1557 to return the long long value nearest to x.
1559 d_llroundl (d_llroundl.U):
1560 This variable conditionally defines the HAS_LLROUNDL symbol, which
1561 indicates to the C program that the llroundl() routine is available
1562 to return the long long value nearest to x away from zero.
1564 d_localeconv_l (d_localeconv_l.U):
1565 This variable conditionally defines the HAS_LOCALECONV_L symbol, which
1566 indicates to the C program that the localeconv_l() routine is available.
1568 d_localtime64 (d_timefuncs64.U):
1569 This variable conditionally defines the HAS_LOCALTIME64 symbol, which
1570 indicates to the C program that the localtime64 () routine is available.
1572 d_localtime_r (d_localtime_r.U):
1573 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1574 which indicates to the C program that the localtime_r()
1575 routine is available.
1577 d_localtime_r_needs_tzset (d_localtime_r.U):
1578 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1579 symbol, which makes us call tzset before localtime_r()
1581 d_locconv (d_locconv.U):
1582 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1583 available for numeric and monetary formatting conventions.
1585 d_lockf (d_lockf.U):
1586 This variable conditionally defines HAS_LOCKF if lockf() is
1587 available to do file locking.
1589 d_log1p (d_log1p.U):
1590 This variable conditionally defines the HAS_LOG1P symbol, which
1591 indicates to the C program that the logp1() routine is available
1592 to compute log(1 + x) for values of x close to zero.
1595 This variable conditionally defines the HAS_LOG2 symbol, which
1596 indicates to the C program that the log2() routine is available
1597 to compute log base two.
1600 This variable conditionally defines the HAS_LOGB symbol, which
1601 indicates to the C program that the logb() routine is available
1602 to extract the exponent of x.
1604 d_long_double_style_ieee (d_longdbl.U):
1605 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE
1606 if the long double is any of the IEEE 754 style long doubles:
1607 LONG_DOUBLE_STYLE_IEEE_STD, LONG_DOUBLE_STYLE_IEEE_EXTENDED,
1608 LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE.
1610 d_long_double_style_ieee_doubledouble (d_longdbl.U):
1611 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE
1612 if the long double is the 128-bit IEEE 754 double-double.
1614 d_long_double_style_ieee_extended (d_longdbl.U):
1615 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_EXTENDED
1616 if the long double is the 80-bit IEEE 754 extended precision.
1617 Note that despite the 'extended' this is less than the 'std',
1618 since this is an extension of the double precision.
1620 d_long_double_style_ieee_std (d_longdbl.U):
1621 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_STD
1622 if the long double is the 128-bit IEEE 754.
1624 d_long_double_style_vax (d_longdbl.U):
1625 This variable conditionally defines LONG_DOUBLE_STYLE_VAX
1626 if the long double is the 128-bit VAX format H.
1628 d_longdbl (d_longdbl.U):
1629 This variable conditionally defines HAS_LONG_DOUBLE if
1630 the long double type is supported.
1632 d_longlong (d_longlong.U):
1633 This variable conditionally defines HAS_LONG_LONG if
1634 the long long type is supported.
1636 d_lrint (d_lrint.U):
1637 This variable conditionally defines the HAS_LRINT symbol, which
1638 indicates to the C program that the lrint() routine is available
1639 to return the integral value closest to a double (according
1640 to the current rounding mode).
1642 d_lrintl (d_lrintl.U):
1643 This variable conditionally defines the HAS_LRINTL symbol, which
1644 indicates to the C program that the lrintl() routine is available
1645 to return the integral value closest to a long double (according
1646 to the current rounding mode).
1648 d_lround (d_lround.U):
1649 This variable conditionally defines the HAS_LROUND symbol, which
1650 indicates to the C program that the lround() routine is available
1651 to return the integral value nearest to x.
1653 d_lroundl (d_lroundl.U):
1654 This variable conditionally defines the HAS_LROUNDL symbol, which
1655 indicates to the C program that the lroundl() routine is available
1656 to return the integral value nearest to x away from zero.
1658 d_lseekproto (d_lseekproto.U):
1659 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1660 which indicates to the C program that the system provides
1661 a prototype for the lseek() function. Otherwise, it is
1662 up to the program to supply one.
1664 d_lstat (d_lstat.U):
1665 This variable conditionally defines HAS_LSTAT if lstat() is
1666 available to do file stats on symbolic links.
1668 d_madvise (d_madvise.U):
1669 This variable conditionally defines HAS_MADVISE if madvise() is
1670 available to map a file into memory.
1672 d_malloc_good_size (d_malloc_size.U):
1673 This symbol, if defined, indicates that the malloc_good_size
1674 routine is available for use.
1676 d_malloc_size (d_malloc_size.U):
1677 This symbol, if defined, indicates that the malloc_size
1678 routine is available for use.
1680 d_malloc_usable_size (d_malloc_size.U):
1681 This symbol, if defined, indicates that the malloc_usable_size
1682 routine is available for use.
1684 d_mblen (d_mblen.U):
1685 This variable conditionally defines the HAS_MBLEN symbol, which
1686 indicates to the C program that the mblen() routine is available
1687 to find the number of bytes in a multibyte character.
1689 d_mbrlen (d_mbrlen.U):
1690 This variable conditionally defines the HAS_MBRLEN symbol if the
1691 mbrlen() routine is available to be used to get the length of
1692 multi-byte character strings.
1694 d_mbrtowc (d_mbrtowc.U):
1695 This variable conditionally defines the HAS_MBRTOWC symbol if the
1696 mbrtowc() routine is available to be used to convert a multi-byte
1697 character into a wide character.
1699 d_mbstowcs (d_mbstowcs.U):
1700 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1701 indicates to the C program that the mbstowcs() routine is available
1702 to convert a multibyte string into a wide character string.
1704 d_mbtowc (d_mbtowc.U):
1705 This variable conditionally defines the HAS_MBTOWC symbol, which
1706 indicates to the C program that the mbtowc() routine is available
1707 to convert multibyte to a wide character.
1709 d_memmem (d_memmem.U):
1710 This variable conditionally defines the HAS_MEMMEM symbol, which
1711 indicates to the C program that the memmem() routine is available
1712 to return a pointer to the start of the first occurrence of a
1713 substring in a memory area (or NULL if not found).
1715 d_memrchr (d_memrchr.U):
1716 This variable conditionally defines the HAS_MEMRCHR symbol, which
1717 indicates to the C program that the memrchr() routine is available
1718 to return a pointer to the last occurrence of a byte in a memory
1719 area (or NULL if not found).
1721 d_mkdir (d_mkdir.U):
1722 This variable conditionally defines the HAS_MKDIR symbol, which
1723 indicates to the C program that the mkdir() routine is available
1724 to create directories..
1726 d_mkdtemp (d_mkdtemp.U):
1727 This variable conditionally defines the HAS_MKDTEMP symbol, which
1728 indicates to the C program that the mkdtemp() routine is available
1729 to exclusively create a uniquely named temporary directory.
1731 d_mkfifo (d_mkfifo.U):
1732 This variable conditionally defines the HAS_MKFIFO symbol, which
1733 indicates to the C program that the mkfifo() routine is available.
1735 d_mkostemp (d_mkostemp.U):
1736 This variable conditionally defines HAS_MKOSTEMP if mkostemp() is
1737 available to exclusively create and open a uniquely named (with a
1738 suffix) temporary file.
1740 d_mkstemp (d_mkstemp.U):
1741 This variable conditionally defines the HAS_MKSTEMP symbol, which
1742 indicates to the C program that the mkstemp() routine is available
1743 to exclusively create and open a uniquely named temporary file.
1745 d_mkstemps (d_mkstemps.U):
1746 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1747 indicates to the C program that the mkstemps() routine is available
1748 to exclusively create and open a uniquely named (with a suffix)
1751 d_mktime (d_mktime.U):
1752 This variable conditionally defines the HAS_MKTIME symbol, which
1753 indicates to the C program that the mktime() routine is available.
1755 d_mktime64 (d_timefuncs64.U):
1756 This variable conditionally defines the HAS_MKTIME64 symbol, which
1757 indicates to the C program that the mktime64 () routine is available.
1760 This variable conditionally defines HAS_MMAP if mmap() is
1761 available to map a file into memory.
1763 d_modfl (d_modfl.U):
1764 This variable conditionally defines the HAS_MODFL symbol, which
1765 indicates to the C program that the modfl() routine is available.
1767 d_modflproto (d_modfl.U):
1768 This symbol, if defined, indicates that the system provides
1769 a prototype for the modfl() function. Otherwise, it is up
1770 to the program to supply one. C99 says it should be
1771 long double modfl(long double, long double *);
1773 d_mprotect (d_mprotect.U):
1774 This variable conditionally defines HAS_MPROTECT if mprotect() is
1775 available to modify the access protection of a memory mapped file.
1778 This variable conditionally defines the HAS_MSG symbol, which
1779 indicates that the entire msg*(2) library is present.
1781 d_msg_ctrunc (d_socket.U):
1782 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1783 which indicates that the MSG_CTRUNC is available. #ifdef is
1784 not enough because it may be an enum, glibc has been known to do this.
1786 d_msg_dontroute (d_socket.U):
1787 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1788 which indicates that the MSG_DONTROUTE is available. #ifdef is
1789 not enough because it may be an enum, glibc has been known to do this.
1791 d_msg_oob (d_socket.U):
1792 This variable conditionally defines the HAS_MSG_OOB symbol,
1793 which indicates that the MSG_OOB is available. #ifdef is
1794 not enough because it may be an enum, glibc has been known to do this.
1796 d_msg_peek (d_socket.U):
1797 This variable conditionally defines the HAS_MSG_PEEK symbol,
1798 which indicates that the MSG_PEEK is available. #ifdef is
1799 not enough because it may be an enum, glibc has been known to do this.
1801 d_msg_proxy (d_socket.U):
1802 This variable conditionally defines the HAS_MSG_PROXY symbol,
1803 which indicates that the MSG_PROXY is available. #ifdef is
1804 not enough because it may be an enum, glibc has been known to do this.
1806 d_msgctl (d_msgctl.U):
1807 This variable conditionally defines the HAS_MSGCTL symbol, which
1808 indicates to the C program that the msgctl() routine is available.
1810 d_msgget (d_msgget.U):
1811 This variable conditionally defines the HAS_MSGGET symbol, which
1812 indicates to the C program that the msgget() routine is available.
1814 d_msghdr_s (d_msghdr_s.U):
1815 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1816 which indicates that the struct msghdr is supported.
1818 d_msgrcv (d_msgrcv.U):
1819 This variable conditionally defines the HAS_MSGRCV symbol, which
1820 indicates to the C program that the msgrcv() routine is available.
1822 d_msgsnd (d_msgsnd.U):
1823 This variable conditionally defines the HAS_MSGSND symbol, which
1824 indicates to the C program that the msgsnd() routine is available.
1826 d_msync (d_msync.U):
1827 This variable conditionally defines HAS_MSYNC if msync() is
1828 available to synchronize a mapped file.
1830 d_munmap (d_munmap.U):
1831 This variable conditionally defines HAS_MUNMAP if munmap() is
1832 available to unmap a region mapped by mmap().
1834 d_mymalloc (mallocsrc.U):
1835 This variable conditionally defines MYMALLOC in case other parts
1836 of the source want to take special action if MYMALLOC is used.
1837 This may include different sorts of profiling or error detection.
1840 This variable conditionally defines HAS_NAN if nan() is
1841 available to generate NaN.
1843 d_nanosleep (d_nanosleep.U):
1844 This variable conditionally defines HAS_NANOSLEEP
1845 if nanosleep() is available to sleep with 1E-9 sec accuracy.
1848 This variable conditionally defines the HAS_NDBM symbol, which
1849 indicates that both the ndbm.h include file and an appropriate ndbm
1850 library exist. Consult the different i_*ndbm variables
1851 to find out the actual include location. Sometimes, a system has the
1852 header file but not the library. This variable will only be set if
1853 the system has both.
1855 d_ndbm_h_uses_prototypes (i_ndbm.U):
1856 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1857 which indicates that the ndbm.h include file uses real ANSI C
1858 prototypes instead of K&R style function declarations. K&R style
1859 declarations are unsupported in C++, so the include file requires
1860 special handling when using a C++ compiler and this variable is
1861 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1862 to get the same information for alternative ndbm.h include files.
1864 d_nearbyint (d_nearbyint.U):
1865 This variable conditionally defines HAS_NEARBYINT if nearbyint()
1866 is available to return the integral value closest to (according to
1867 the current rounding mode) to x.
1869 d_newlocale (d_newlocale.U):
1870 This variable conditionally defines the HAS_NEWLOCALE symbol, which
1871 indicates to the C program that the newlocale() routine is available
1872 to return a new locale object or modify an existing locale object.
1874 d_nextafter (d_nextafter.U):
1875 This variable conditionally defines HAS_NEXTAFTER if nextafter()
1876 is available to return the next machine representable double from
1879 d_nexttoward (d_nexttoward.U):
1880 This variable conditionally defines HAS_NEXTTOWARD if nexttoward()
1881 is available to return the next machine representable long double from
1885 This variable conditionally defines the HAS_NICE symbol, which
1886 indicates to the C program that the nice() routine is available.
1888 d_nl_langinfo (d_nl_langinfo.U):
1889 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1890 indicates to the C program that the nl_langinfo() routine is available.
1892 d_nv_preserves_uv (perlxv.U):
1893 This variable indicates whether a variable of type nvtype
1894 can preserve all the bits a variable of type uvtype.
1896 d_nv_zero_is_allbits_zero (perlxv.U):
1897 This variable indicates whether a variable of type nvtype
1898 stores 0.0 in memory as all bits zero.
1900 d_off64_t (d_off64_t.U):
1901 This symbol will be defined if the C compiler supports off64_t.
1903 d_old_pthread_create_joinable (d_pthrattrj.U):
1904 This variable conditionally defines pthread_create_joinable.
1905 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1907 d_oldpthreads (usethreads.U):
1908 This variable conditionally defines the OLD_PTHREADS_API symbol,
1909 and indicates that Perl should be built to use the old
1910 draft POSIX threads API. This is only potentially meaningful if
1913 d_oldsock (d_socket.U):
1914 This variable conditionally defines the OLDSOCKET symbol, which
1915 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1917 d_open3 (d_open3.U):
1918 This variable conditionally defines the HAS_OPEN3 manifest constant,
1919 which indicates to the C program that the 3 argument version of
1920 the open(2) function is available.
1922 d_openat (d_fsat.U):
1923 This variable conditionally defines the HAS_OPENAT symbol, which
1924 indicates the POSIX openat() function is available.
1926 d_pathconf (d_pathconf.U):
1927 This variable conditionally defines the HAS_PATHCONF symbol, which
1928 indicates to the C program that the pathconf() routine is available
1929 to determine file-system related limits and options associated
1930 with a given filename.
1932 d_pause (d_pause.U):
1933 This variable conditionally defines the HAS_PAUSE symbol, which
1934 indicates to the C program that the pause() routine is available
1935 to suspend a process until a signal is received.
1937 d_perl_otherlibdirs (otherlibdirs.U):
1938 This variable conditionally defines PERL_OTHERLIBDIRS, which
1939 contains a colon-separated set of paths for the perl binary to
1940 include in @INC. See also otherlibdirs.
1942 d_phostname (d_gethname.U):
1943 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1944 contains the shell command which, when fed to popen(), may be
1945 used to derive the host name.
1948 This variable conditionally defines the HAS_PIPE symbol, which
1949 indicates to the C program that the pipe() routine is available
1950 to create an inter-process channel.
1952 d_pipe2 (d_pipe2.U):
1953 This variable conditionally defines the HAS_PIPE2 symbol, which
1954 indicates to the C program that the pipe2() routine is available
1955 to create an inter-process channel.
1958 This variable conditionally defines the HAS_POLL symbol, which
1959 indicates to the C program that the poll() routine is available
1960 to poll active file descriptors.
1962 d_portable (d_portable.U):
1963 This variable conditionally defines the PORTABLE symbol, which
1964 indicates to the C program that it should not assume that it is
1965 running on the machine it was compiled on.
1967 d_prctl (d_prctl.U):
1968 This variable conditionally defines the HAS_PRCTL symbol, which
1969 indicates to the C program that the prctl() routine is available.
1970 Note that there are at least two prctl variants: Linux and Irix.
1971 While they are somewhat similar, they are incompatible.
1973 d_prctl_set_name (d_prctl.U):
1974 This variable conditionally defines the HAS_PRCTL_SET_NAME symbol,
1975 which indicates to the C program that the prctl() routine supports
1976 the PR_SET_NAME option.
1978 d_PRId64 (quadfio.U):
1979 This variable conditionally defines the PERL_PRId64 symbol, which
1980 indicates that stdio has a symbol to print 64-bit decimal numbers.
1982 d_PRIeldbl (longdblfio.U):
1983 This variable conditionally defines the PERL_PRIfldbl symbol, which
1984 indicates that stdio has a symbol to print long doubles.
1986 d_PRIEUldbl (longdblfio.U):
1987 This variable conditionally defines the PERL_PRIfldbl symbol, which
1988 indicates that stdio has a symbol to print long doubles.
1989 The 'U' in the name is to separate this from d_PRIeldbl so that even
1990 case-blind systems can see the difference.
1992 d_PRIfldbl (longdblfio.U):
1993 This variable conditionally defines the PERL_PRIfldbl symbol, which
1994 indicates that stdio has a symbol to print long doubles.
1996 d_PRIFUldbl (longdblfio.U):
1997 This variable conditionally defines the PERL_PRIfldbl symbol, which
1998 indicates that stdio has a symbol to print long doubles.
1999 The 'U' in the name is to separate this from d_PRIfldbl so that even
2000 case-blind systems can see the difference.
2002 d_PRIgldbl (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_PRIGUldbl (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_PRIgldbl so that even
2010 case-blind systems can see the difference.
2012 d_PRIi64 (quadfio.U):
2013 This variable conditionally defines the PERL_PRIi64 symbol, which
2014 indicates that stdio has a symbol to print 64-bit decimal numbers.
2016 d_printf_format_null (d_attribut.U):
2017 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
2018 indicates the C compiler allows printf-like formats to be null.
2020 d_PRIo64 (quadfio.U):
2021 This variable conditionally defines the PERL_PRIo64 symbol, which
2022 indicates that stdio has a symbol to print 64-bit octal numbers.
2024 d_PRIu64 (quadfio.U):
2025 This variable conditionally defines the PERL_PRIu64 symbol, which
2026 indicates that stdio has a symbol to print 64-bit unsigned decimal
2029 d_PRIx64 (quadfio.U):
2030 This variable conditionally defines the PERL_PRIx64 symbol, which
2031 indicates that stdio has a symbol to print 64-bit hexadecimal numbers.
2033 d_PRIXU64 (quadfio.U):
2034 This variable conditionally defines the PERL_PRIXU64 symbol, which
2035 indicates that stdio has a symbol to print 64-bit hExADECimAl numbers.
2036 The 'U' in the name is to separate this from d_PRIx64 so that even
2037 case-blind systems can see the difference.
2039 d_procselfexe (d_procselfexe.U):
2040 Defined if $procselfexe is symlink to the absolute
2041 pathname of the executing program.
2043 d_pseudofork (d_vfork.U):
2044 This variable conditionally defines the HAS_PSEUDOFORK symbol,
2045 which indicates that an emulation of the fork routine is available.
2047 d_pthread_atfork (d_pthread_atfork.U):
2048 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
2049 which indicates to the C program that the pthread_atfork()
2050 routine is available.
2052 d_pthread_attr_setscope (d_pthread_attr_ss.U):
2053 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
2054 pthread_attr_setscope() is available to set the contention scope
2055 attribute of a thread attribute object.
2057 d_pthread_yield (d_pthread_y.U):
2058 This variable conditionally defines the HAS_PTHREAD_YIELD
2059 symbol if the pthread_yield routine is available to yield
2060 the execution of the current thread.
2062 d_ptrdiff_t (d_ptrdiff_t.U):
2063 This symbol will be defined if the C compiler supports ptrdiff_t.
2066 This variable conditionally defines PWAGE, which indicates
2067 that struct passwd contains pw_age.
2069 d_pwchange (i_pwd.U):
2070 This variable conditionally defines PWCHANGE, which indicates
2071 that struct passwd contains pw_change.
2073 d_pwclass (i_pwd.U):
2074 This variable conditionally defines PWCLASS, which indicates
2075 that struct passwd contains pw_class.
2077 d_pwcomment (i_pwd.U):
2078 This variable conditionally defines PWCOMMENT, which indicates
2079 that struct passwd contains pw_comment.
2081 d_pwexpire (i_pwd.U):
2082 This variable conditionally defines PWEXPIRE, which indicates
2083 that struct passwd contains pw_expire.
2085 d_pwgecos (i_pwd.U):
2086 This variable conditionally defines PWGECOS, which indicates
2087 that struct passwd contains pw_gecos.
2089 d_pwpasswd (i_pwd.U):
2090 This variable conditionally defines PWPASSWD, which indicates
2091 that struct passwd contains pw_passwd.
2093 d_pwquota (i_pwd.U):
2094 This variable conditionally defines PWQUOTA, which indicates
2095 that struct passwd contains pw_quota.
2097 d_qgcvt (d_qgcvt.U):
2098 This variable conditionally defines the HAS_QGCVT symbol, which
2099 indicates to the C program that the qgcvt() routine is available.
2101 d_quad (quadtype.U):
2102 This variable, if defined, tells that there's a 64-bit integer type,
2105 d_querylocale (d_newlocale.U):
2106 This variable conditionally defines the HAS_QUERYLOCALE symbol, which
2107 indicates to the C program that the querylocale() routine is available
2108 to return the name of the locale for a category mask.
2110 d_random_r (d_random_r.U):
2111 This variable conditionally defines the HAS_RANDOM_R symbol,
2112 which indicates to the C program that the random_r()
2113 routine is available.
2115 d_re_comp (d_regcmp.U):
2116 This variable conditionally defines the HAS_RECOMP symbol, which
2117 indicates to the C program that the re_comp() routine is available
2118 for regular pattern matching (usually on BSD). If so, it is likely that
2121 d_readdir (d_readdir.U):
2122 This variable conditionally defines HAS_READDIR if readdir() is
2123 available to read directory entries.
2125 d_readdir64_r (d_readdir64_r.U):
2126 This variable conditionally defines the HAS_READDIR64_R symbol,
2127 which indicates to the C program that the readdir64_r()
2128 routine is available.
2130 d_readdir_r (d_readdir_r.U):
2131 This variable conditionally defines the HAS_READDIR_R symbol,
2132 which indicates to the C program that the readdir_r()
2133 routine is available.
2135 d_readlink (d_readlink.U):
2136 This variable conditionally defines the HAS_READLINK symbol, which
2137 indicates to the C program that the readlink() routine is available
2138 to read the value of a symbolic link.
2140 d_readv (d_readv.U):
2141 This variable conditionally defines the HAS_READV symbol, which
2142 indicates to the C program that the readv() routine is available.
2144 d_recvmsg (d_recvmsg.U):
2145 This variable conditionally defines the HAS_RECVMSG symbol, which
2146 indicates to the C program that the recvmsg() routine is available.
2148 d_regcmp (d_regcmp.U):
2149 This variable conditionally defines the HAS_REGCMP symbol, which
2150 indicates to the C program that the regcmp() routine is available
2151 for regular pattern matching (usually on System V).
2153 d_regcomp (d_regcmp.U):
2154 This variable conditionally defines the HAS_REGCOMP symbol, which
2155 indicates to the C program that the regcomp() routine is available
2156 for regular pattern matching (usually on POSIX.2 conforming systems).
2158 d_remainder (d_remainder.U):
2159 This variable conditionally defines the HAS_REMAINDER symbol, which
2160 indicates to the C program that the remainder() routine is available.
2162 d_remquo (d_remquo.U):
2163 This variable conditionally defines the HAS_REMQUO symbol, which
2164 indicates to the C program that the remquo() routine is available.
2166 d_rename (d_rename.U):
2167 This variable conditionally defines the HAS_RENAME symbol, which
2168 indicates to the C program that the rename() routine is available
2171 d_renameat (d_fsat.U):
2172 This variable conditionally defines the HAS_RENAMEAT symbol, which
2173 indicates the POSIX renameat() function is available.
2175 d_rewinddir (d_readdir.U):
2176 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
2180 This variable conditionally defines the HAS_RINT symbol, which
2181 indicates to the C program that the rint() routine is available.
2183 d_rmdir (d_rmdir.U):
2184 This variable conditionally defines HAS_RMDIR if rmdir() is
2185 available to remove directories.
2187 d_round (d_round.U):
2188 This variable conditionally defines the HAS_ROUND symbol, which
2189 indicates to the C program that the round() routine is available.
2191 d_sbrkproto (d_sbrkproto.U):
2192 This variable conditionally defines the HAS_SBRK_PROTO symbol,
2193 which indicates to the C program that the system provides
2194 a prototype for the sbrk() function. Otherwise, it is
2195 up to the program to supply one.
2197 d_scalbn (d_scalbn.U):
2198 This variable conditionally defines the HAS_SCALBN symbol, which
2199 indicates to the C program that the scalbn() routine is available.
2201 d_scalbnl (d_scalbnl.U):
2202 This variable conditionally defines the HAS_SCALBNL symbol, which
2203 indicates to the C program that the scalbnl() routine is available.
2204 If ilogbl is also present we can emulate frexpl.
2206 d_sched_yield (d_pthread_y.U):
2207 This variable conditionally defines the HAS_SCHED_YIELD
2208 symbol if the sched_yield routine is available to yield
2209 the execution of the current thread.
2211 d_scm_rights (d_socket.U):
2212 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
2213 which indicates that the SCM_RIGHTS is available. #ifdef is
2214 not enough because it may be an enum, glibc has been known to do this.
2216 d_SCNfldbl (longdblfio.U):
2217 This variable conditionally defines the PERL_PRIfldbl symbol, which
2218 indicates that stdio has a symbol to scan long doubles.
2220 d_seekdir (d_readdir.U):
2221 This variable conditionally defines HAS_SEEKDIR if seekdir() is
2224 d_select (d_select.U):
2225 This variable conditionally defines HAS_SELECT if select() is
2226 available to select active file descriptors. A <sys/time.h>
2227 inclusion may be necessary for the timeout field.
2230 This variable conditionally defines the HAS_SEM symbol, which
2231 indicates that the entire sem*(2) library is present.
2233 d_semctl (d_semctl.U):
2234 This variable conditionally defines the HAS_SEMCTL symbol, which
2235 indicates to the C program that the semctl() routine is available.
2237 d_semctl_semid_ds (d_union_semun.U):
2238 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
2239 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
2241 d_semctl_semun (d_union_semun.U):
2242 This variable conditionally defines USE_SEMCTL_SEMUN, which
2243 indicates that union semun is to be used for semctl IPC_STAT.
2245 d_semget (d_semget.U):
2246 This variable conditionally defines the HAS_SEMGET symbol, which
2247 indicates to the C program that the semget() routine is available.
2249 d_semop (d_semop.U):
2250 This variable conditionally defines the HAS_SEMOP symbol, which
2251 indicates to the C program that the semop() routine is available.
2253 d_sendmsg (d_sendmsg.U):
2254 This variable conditionally defines the HAS_SENDMSG symbol, which
2255 indicates to the C program that the sendmsg() routine is available.
2257 d_setegid (d_setegid.U):
2258 This variable conditionally defines the HAS_SETEGID symbol, which
2259 indicates to the C program that the setegid() routine is available
2260 to change the effective gid of the current program.
2262 d_seteuid (d_seteuid.U):
2263 This variable conditionally defines the HAS_SETEUID symbol, which
2264 indicates to the C program that the seteuid() routine is available
2265 to change the effective uid of the current program.
2267 d_setgrent (d_setgrent.U):
2268 This variable conditionally defines the HAS_SETGRENT symbol, which
2269 indicates to the C program that the setgrent() routine is available
2270 for initializing sequential access to the group database.
2272 d_setgrent_r (d_setgrent_r.U):
2273 This variable conditionally defines the HAS_SETGRENT_R symbol,
2274 which indicates to the C program that the setgrent_r()
2275 routine is available.
2277 d_setgrps (d_setgrps.U):
2278 This variable conditionally defines the HAS_SETGROUPS symbol, which
2279 indicates to the C program that the setgroups() routine is available
2280 to set the list of process groups.
2282 d_sethent (d_sethent.U):
2283 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
2286 d_sethostent_r (d_sethostent_r.U):
2287 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
2288 which indicates to the C program that the sethostent_r()
2289 routine is available.
2291 d_setitimer (d_setitimer.U):
2292 This variable conditionally defines the HAS_SETITIMER symbol, which
2293 indicates to the C program that the setitimer() routine is available.
2295 d_setlinebuf (d_setlnbuf.U):
2296 This variable conditionally defines the HAS_SETLINEBUF symbol, which
2297 indicates to the C program that the setlinebuf() routine is available
2298 to change stderr or stdout from block-buffered or unbuffered to a
2301 d_setlocale (d_setlocale.U):
2302 This variable conditionally defines HAS_SETLOCALE if setlocale() is
2303 available to handle locale-specific ctype implementations.
2305 d_setlocale_accepts_any_locale_name (d_setlocale.U):
2306 This variable conditionally defines SETLOCALE_ACCEPTS_ANY_LOCALE_NAME
2307 if setlocale() accepts any locale name.
2309 d_setlocale_r (d_setlocale_r.U):
2310 This variable conditionally defines the HAS_SETLOCALE_R symbol,
2311 which indicates to the C program that the setlocale_r()
2312 routine is available.
2314 d_setnent (d_setnent.U):
2315 This variable conditionally defines HAS_SETNETENT if setnetent() is
2318 d_setnetent_r (d_setnetent_r.U):
2319 This variable conditionally defines the HAS_SETNETENT_R symbol,
2320 which indicates to the C program that the setnetent_r()
2321 routine is available.
2323 d_setpent (d_setpent.U):
2324 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
2327 d_setpgid (d_setpgid.U):
2328 This variable conditionally defines the HAS_SETPGID symbol if the
2329 setpgid(pid, gpid) function is available to set process group ID.
2331 d_setpgrp (d_setpgrp.U):
2332 This variable conditionally defines HAS_SETPGRP if setpgrp() is
2333 available to set the current process group.
2335 d_setpgrp2 (d_setpgrp2.U):
2336 This variable conditionally defines the HAS_SETPGRP2 symbol, which
2337 indicates to the C program that the setpgrp2() (as in DG/UX) routine
2338 is available to set the current process group.
2340 d_setprior (d_setprior.U):
2341 This variable conditionally defines HAS_SETPRIORITY if setpriority()
2342 is available to set a process's priority.
2344 d_setproctitle (d_setproctitle.U):
2345 This variable conditionally defines the HAS_SETPROCTITLE symbol,
2346 which indicates to the C program that the setproctitle() routine
2349 d_setprotoent_r (d_setprotoent_r.U):
2350 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
2351 which indicates to the C program that the setprotoent_r()
2352 routine is available.
2354 d_setpwent (d_setpwent.U):
2355 This variable conditionally defines the HAS_SETPWENT symbol, which
2356 indicates to the C program that the setpwent() routine is available
2357 for initializing sequential access to the passwd database.
2359 d_setpwent_r (d_setpwent_r.U):
2360 This variable conditionally defines the HAS_SETPWENT_R symbol,
2361 which indicates to the C program that the setpwent_r()
2362 routine is available.
2364 d_setregid (d_setregid.U):
2365 This variable conditionally defines HAS_SETREGID if setregid() is
2366 available to change the real and effective gid of the current
2369 d_setresgid (d_setregid.U):
2370 This variable conditionally defines HAS_SETRESGID if setresgid() is
2371 available to change the real, effective and saved gid of the current
2374 d_setresuid (d_setreuid.U):
2375 This variable conditionally defines HAS_SETREUID if setresuid() is
2376 available to change the real, effective and saved uid of the current
2379 d_setreuid (d_setreuid.U):
2380 This variable conditionally defines HAS_SETREUID if setreuid() is
2381 available to change the real and effective uid of the current
2384 d_setrgid (d_setrgid.U):
2385 This variable conditionally defines the HAS_SETRGID symbol, which
2386 indicates to the C program that the setrgid() routine is available
2387 to change the real gid of the current program.
2389 d_setruid (d_setruid.U):
2390 This variable conditionally defines the HAS_SETRUID symbol, which
2391 indicates to the C program that the setruid() routine is available
2392 to change the real uid of the current program.
2394 d_setsent (d_setsent.U):
2395 This variable conditionally defines HAS_SETSERVENT if setservent() is
2398 d_setservent_r (d_setservent_r.U):
2399 This variable conditionally defines the HAS_SETSERVENT_R symbol,
2400 which indicates to the C program that the setservent_r()
2401 routine is available.
2403 d_setsid (d_setsid.U):
2404 This variable conditionally defines HAS_SETSID if setsid() is
2405 available to set the process group ID.
2407 d_setvbuf (d_setvbuf.U):
2408 This variable conditionally defines the HAS_SETVBUF symbol, which
2409 indicates to the C program that the setvbuf() routine is available
2410 to change buffering on an open stdio stream.
2413 This variable conditionally defines the HAS_SHM symbol, which
2414 indicates that the entire shm*(2) library is present.
2416 d_shmat (d_shmat.U):
2417 This variable conditionally defines the HAS_SHMAT symbol, which
2418 indicates to the C program that the shmat() routine is available.
2420 d_shmatprototype (d_shmat.U):
2421 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
2422 symbol, which indicates that sys/shm.h has a prototype for
2425 d_shmctl (d_shmctl.U):
2426 This variable conditionally defines the HAS_SHMCTL symbol, which
2427 indicates to the C program that the shmctl() routine is available.
2429 d_shmdt (d_shmdt.U):
2430 This variable conditionally defines the HAS_SHMDT symbol, which
2431 indicates to the C program that the shmdt() routine is available.
2433 d_shmget (d_shmget.U):
2434 This variable conditionally defines the HAS_SHMGET symbol, which
2435 indicates to the C program that the shmget() routine is available.
2437 d_sigaction (d_sigaction.U):
2438 This variable conditionally defines the HAS_SIGACTION symbol, which
2439 indicates that the Vr4 sigaction() routine is available.
2441 d_siginfo_si_addr (d_siginfo_si.U):
2442 This variable conditionally defines the HAS_SIGINFO_SI_ADDR symbol,
2443 which indicates that the siginfo_t struct has the si_addr member.
2445 d_siginfo_si_band (d_siginfo_si.U):
2446 This variable conditionally defines the HAS_SIGINFO_SI_BAND symbol,
2447 which indicates that the siginfo_t struct has the si_band member.
2449 d_siginfo_si_errno (d_siginfo_si.U):
2450 This variable conditionally defines the HAS_SIGINFO_SI_ERRNO symbol,
2451 which indicates that the siginfo_t struct has the si_errno member.
2453 d_siginfo_si_fd (d_siginfo_si.U):
2454 This variable conditionally defines the HAS_SIGINFO_SI_FD symbol,
2455 which indicates that the siginfo_t struct has the si_fd member.
2457 d_siginfo_si_pid (d_siginfo_si.U):
2458 This variable conditionally defines the HAS_SIGINFO_SI_PID symbol,
2459 which indicates that the siginfo_t struct has the si_pid member.
2461 d_siginfo_si_status (d_siginfo_si.U):
2462 This variable conditionally defines the HAS_SIGINFO_SI_STATUS symbol,
2463 which indicates that the siginfo_t struct has the si_status member.
2465 d_siginfo_si_uid (d_siginfo_si.U):
2466 This variable conditionally defines the HAS_SIGINFO_SI_UID symbol,
2467 which indicates that the siginfo_t struct has the si_uid member.
2469 d_siginfo_si_value (d_siginfo_si.U):
2470 This variable conditionally defines the HAS_SIGINFO_SI_VALUE symbol,
2471 which indicates that the siginfo_t struct has the si_value member.
2473 d_signbit (d_signbit.U):
2474 This variable conditionally defines the HAS_SIGNBIT symbol, which
2475 indicates to the C program that the signbit() routine is available
2476 and safe to use with perl's intern NV type.
2478 d_sigprocmask (d_sigprocmask.U):
2479 This variable conditionally defines HAS_SIGPROCMASK
2480 if sigprocmask() is available to examine or change the signal mask
2481 of the calling process.
2483 d_sigsetjmp (d_sigsetjmp.U):
2484 This variable conditionally defines the HAS_SIGSETJMP symbol,
2485 which indicates that the sigsetjmp() routine is available to
2486 call setjmp() and optionally save the process's signal mask.
2488 d_sin6_scope_id (d_socket.U):
2489 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol, which
2490 indicates that a struct sockaddr_in6 structure has the sin6_scope_id
2493 d_sitearch (sitearch.U):
2494 This variable conditionally defines SITEARCH to hold the pathname
2495 of architecture-dependent library files for $package. If
2496 $sitearch is the same as $archlib, then this is set to undef.
2498 d_snprintf (d_snprintf.U):
2499 This variable conditionally defines the HAS_SNPRINTF symbol, which
2500 indicates to the C program that the snprintf () library function
2503 d_sockaddr_in6 (d_socket.U):
2504 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol, which
2505 indicates the availability of a struct sockaddr_in6.
2507 d_sockaddr_sa_len (d_socket.U):
2508 This variable conditionally defines the HAS_SOCKADDR_SA_LEN symbol,
2509 which indicates that a struct sockaddr structure has the sa_len
2512 d_sockaddr_storage (d_socket.U):
2513 This variable conditionally defines the HAS_SOCKADDR_STORAGE symbol,
2514 which indicates the availability of a struct sockaddr_storage.
2516 d_sockatmark (d_sockatmark.U):
2517 This variable conditionally defines the HAS_SOCKATMARK symbol, which
2518 indicates to the C program that the sockatmark() routine is available.
2520 d_sockatmarkproto (d_sockatmarkproto.U):
2521 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
2522 which indicates to the C program that the system provides
2523 a prototype for the sockatmark() function. Otherwise, it is
2524 up to the program to supply one.
2526 d_socket (d_socket.U):
2527 This variable conditionally defines HAS_SOCKET, which indicates
2528 that the BSD socket interface is supported.
2530 d_socklen_t (d_socklen_t.U):
2531 This symbol will be defined if the C compiler supports socklen_t.
2533 d_sockpair (d_socket.U):
2534 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
2535 indicates that the BSD socketpair() is supported.
2537 d_socks5_init (d_socks5_init.U):
2538 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
2539 indicates to the C program that the socks5_init() routine is available.
2541 d_sqrtl (d_sqrtl.U):
2542 This variable conditionally defines the HAS_SQRTL symbol, which
2543 indicates to the C program that the sqrtl() routine is available.
2545 d_srand48_r (d_srand48_r.U):
2546 This variable conditionally defines the HAS_SRAND48_R symbol,
2547 which indicates to the C program that the srand48_r()
2548 routine is available.
2550 d_srandom_r (d_srandom_r.U):
2551 This variable conditionally defines the HAS_SRANDOM_R symbol,
2552 which indicates to the C program that the srandom_r()
2553 routine is available.
2555 d_sresgproto (d_sresgproto.U):
2556 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
2557 which indicates to the C program that the system provides
2558 a prototype for the setresgid() function. Otherwise, it is
2559 up to the program to supply one.
2561 d_sresuproto (d_sresuproto.U):
2562 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2563 which indicates to the C program that the system provides
2564 a prototype for the setresuid() function. Otherwise, it is
2565 up to the program to supply one.
2568 This variable conditionally defines HAS_STAT if stat() is
2569 available to get file status.
2571 d_statblks (d_statblks.U):
2572 This variable conditionally defines USE_STAT_BLOCKS
2573 if this system has a stat structure declaring
2574 st_blksize and st_blocks.
2576 d_statfs_f_flags (d_statfs_f_flags.U):
2577 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2578 symbol, which indicates to struct statfs from has f_flags member.
2579 This kind of struct statfs is coming from sys/mount.h (BSD),
2580 not from sys/statfs.h (SYSV).
2582 d_statfs_s (d_statfs_s.U):
2583 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2584 which indicates that the struct statfs is supported.
2586 d_static_inline (d_static_inline.U):
2587 This variable conditionally defines the HAS_STATIC_INLINE symbol,
2588 which indicates that the C compiler supports C99-style static
2589 inline. That is, the function can't be called from another
2592 d_statvfs (d_statvfs.U):
2593 This variable conditionally defines the HAS_STATVFS symbol, which
2594 indicates to the C program that the statvfs() routine is available.
2596 d_stdio_cnt_lval (d_stdstdio.U):
2597 This variable conditionally defines STDIO_CNT_LVALUE if the
2598 FILE_cnt macro can be used as an lvalue.
2600 d_stdio_ptr_lval (d_stdstdio.U):
2601 This variable conditionally defines STDIO_PTR_LVALUE if the
2602 FILE_ptr macro can be used as an lvalue.
2604 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2605 This symbol is defined if using the FILE_ptr macro as an lvalue
2606 to increase the pointer by n leaves File_cnt(fp) unchanged.
2608 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2609 This symbol is defined if using the FILE_ptr macro as an lvalue
2610 to increase the pointer by n has the side effect of decreasing the
2611 value of File_cnt(fp) by n.
2613 d_stdio_stream_array (stdio_streams.U):
2614 This variable tells whether there is an array holding
2617 d_stdiobase (d_stdstdio.U):
2618 This variable conditionally defines USE_STDIO_BASE if this system
2619 has a FILE structure declaring a usable _base field (or equivalent)
2622 d_stdstdio (d_stdstdio.U):
2623 This variable conditionally defines USE_STDIO_PTR if this system
2624 has a FILE structure declaring usable _ptr and _cnt fields (or
2625 equivalent) in stdio.h.
2627 d_strcoll (d_strcoll.U):
2628 This variable conditionally defines HAS_STRCOLL if strcoll() is
2629 available to compare strings using collating information.
2631 d_strerror_l (d_strerror_l.U):
2632 This variable conditionally defines the HAS_STRERROR_L symbol, which
2633 indicates to the C program that the strerror_l() routine is available
2634 to return the error message for a given errno value in a particular
2635 locale (identified by a locale_t object).
2637 d_strerror_r (d_strerror_r.U):
2638 This variable conditionally defines the HAS_STRERROR_R symbol,
2639 which indicates to the C program that the strerror_r()
2640 routine is available.
2642 d_strftime (d_strftime.U):
2643 This variable conditionally defines the HAS_STRFTIME symbol, which
2644 indicates to the C program that the strftime() routine is available.
2646 d_strlcat (d_strlcat.U):
2647 This variable conditionally defines the HAS_STRLCAT symbol, which
2648 indicates to the C program that the strlcat () routine is available.
2650 d_strlcpy (d_strlcpy.U):
2651 This variable conditionally defines the HAS_STRLCPY symbol, which
2652 indicates to the C program that the strlcpy () routine is available.
2654 d_strnlen (d_strnlen.U):
2655 This variable conditionally defines the HAS_STRNLEN symbol, which
2656 indicates to the C program that the strnlen () routine is available.
2658 d_strtod (d_strtod.U):
2659 This variable conditionally defines the HAS_STRTOD symbol, which
2660 indicates to the C program that the strtod() routine is available
2661 to provide better numeric string conversion than atof().
2663 d_strtod_l (d_strtod_l.U):
2664 This variable conditionally defines the HAS_STRTOD_L symbol, which
2665 indicates to the C program that the strtod_l() routine is available.
2667 d_strtol (d_strtol.U):
2668 This variable conditionally defines the HAS_STRTOL symbol, which
2669 indicates to the C program that the strtol() routine is available
2670 to provide better numeric string conversion than atoi() and friends.
2672 d_strtold (d_strtold.U):
2673 This variable conditionally defines the HAS_STRTOLD symbol, which
2674 indicates to the C program that the strtold() routine is available.
2676 d_strtold_l (d_strtold_l.U):
2677 This variable conditionally defines the HAS_STRTOLD_L symbol, which
2678 indicates to the C program that the strtold_l() routine is available.
2680 d_strtoll (d_strtoll.U):
2681 This variable conditionally defines the HAS_STRTOLL symbol, which
2682 indicates to the C program that the strtoll() routine is available.
2684 d_strtoq (d_strtoq.U):
2685 This variable conditionally defines the HAS_STRTOQ symbol, which
2686 indicates to the C program that the strtoq() routine is available.
2688 d_strtoul (d_strtoul.U):
2689 This variable conditionally defines the HAS_STRTOUL symbol, which
2690 indicates to the C program that the strtoul() routine is available
2691 to provide conversion of strings to unsigned long.
2693 d_strtoull (d_strtoull.U):
2694 This variable conditionally defines the HAS_STRTOULL symbol, which
2695 indicates to the C program that the strtoull() routine is available.
2697 d_strtouq (d_strtouq.U):
2698 This variable conditionally defines the HAS_STRTOUQ symbol, which
2699 indicates to the C program that the strtouq() routine is available.
2701 d_strxfrm (d_strxfrm.U):
2702 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2703 available to transform strings.
2705 d_suidsafe (d_dosuid.U):
2706 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2707 if setuid scripts can be secure. This test looks in /dev/fd/.
2709 d_symlink (d_symlink.U):
2710 This variable conditionally defines the HAS_SYMLINK symbol, which
2711 indicates to the C program that the symlink() routine is available
2712 to create symbolic links.
2714 d_syscall (d_syscall.U):
2715 This variable conditionally defines HAS_SYSCALL if syscall() is
2716 available call arbitrary system calls.
2718 d_syscallproto (d_syscallproto.U):
2719 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2720 which indicates to the C program that the system provides
2721 a prototype for the syscall() function. Otherwise, it is
2722 up to the program to supply one.
2724 d_sysconf (d_sysconf.U):
2725 This variable conditionally defines the HAS_SYSCONF symbol, which
2726 indicates to the C program that the sysconf() routine is available
2727 to determine system related limits and options.
2729 d_sysernlst (d_strerror.U):
2730 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2731 is available to translate error numbers to the symbolic name.
2733 d_syserrlst (d_strerror.U):
2734 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2735 available to translate error numbers to strings.
2737 d_system (d_system.U):
2738 This variable conditionally defines HAS_SYSTEM if system() is
2739 available to issue a shell command.
2741 d_tcgetpgrp (d_tcgtpgrp.U):
2742 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2743 indicates to the C program that the tcgetpgrp() routine is available.
2744 to get foreground process group ID.
2746 d_tcsetpgrp (d_tcstpgrp.U):
2747 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2748 indicates to the C program that the tcsetpgrp() routine is available
2749 to set foreground process group ID.
2751 d_telldir (d_readdir.U):
2752 This variable conditionally defines HAS_TELLDIR if telldir() is
2755 d_telldirproto (d_telldirproto.U):
2756 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2757 which indicates to the C program that the system provides
2758 a prototype for the telldir() function. Otherwise, it is
2759 up to the program to supply one.
2761 d_tgamma (d_tgamma.U):
2762 This variable conditionally defines the HAS_TGAMMA symbol, which
2763 indicates to the C program that the tgamma() routine is available
2764 for the gamma function. See also d_lgamma.
2766 d_thread_safe_nl_langinfo_l (d_nl_langinfo_l.U):
2767 This variable contains the eventual value of the
2768 HAS_THREAD_SAFE_NL_LANGINFO_L symbol, which indicates if the
2769 nl_langinfo_l() function exists and is thread-safe.
2772 This variable conditionally defines the HAS_TIME symbol, which indicates
2773 that the time() routine exists. The time() routine is normally
2774 provided on UNIX systems.
2776 d_timegm (d_timegm.U):
2777 This variable conditionally defines the HAS_TIMEGM symbol, which
2778 indicates to the C program that the timegm () routine is available.
2780 d_times (d_times.U):
2781 This variable conditionally defines the HAS_TIMES symbol, which indicates
2782 that the times() routine exists. The times() routine is normally
2783 provided on UNIX systems. You may have to include <sys/times.h>.
2785 d_tm_tm_gmtoff (i_time.U):
2786 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2787 to the C program that the struct tm has the tm_gmtoff field.
2789 d_tm_tm_zone (i_time.U):
2790 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2791 to the C program that the struct tm has the tm_zone field.
2793 d_tmpnam_r (d_tmpnam_r.U):
2794 This variable conditionally defines the HAS_TMPNAM_R symbol,
2795 which indicates to the C program that the tmpnam_r()
2796 routine is available.
2798 d_towlower (d_towlower.U):
2799 This variable conditionally defines the HAS_TOWLOWER symbol, which
2800 indicates to the C program that the towlower() routine is available.
2802 d_towupper (d_towupper.U):
2803 This variable conditionally defines the HAS_TOWUPPER symbol, which
2804 indicates to the C program that the towupper() routine is available.
2806 d_trunc (d_trunc.U):
2807 This variable conditionally defines the HAS_TRUNC symbol, which
2808 indicates to the C program that the trunc() routine is available
2809 to round doubles towards zero.
2811 d_truncate (d_truncate.U):
2812 This variable conditionally defines HAS_TRUNCATE if truncate() is
2813 available to truncate files.
2815 d_truncl (d_truncl.U):
2816 This variable conditionally defines the HAS_TRUNCL symbol, which
2817 indicates to the C program that the truncl() routine is available
2818 to round long doubles towards zero. If copysignl is also present,
2819 we can emulate modfl.
2821 d_ttyname_r (d_ttyname_r.U):
2822 This variable conditionally defines the HAS_TTYNAME_R symbol,
2823 which indicates to the C program that the ttyname_r()
2824 routine is available.
2826 d_tzname (d_tzname.U):
2827 This variable conditionally defines HAS_TZNAME if tzname[] is
2828 available to access timezone names.
2830 d_u32align (d_u32align.U):
2831 This variable tells whether you must access character data
2832 through U32-aligned pointers.
2834 d_ualarm (d_ualarm.U):
2835 This variable conditionally defines the HAS_UALARM symbol, which
2836 indicates to the C program that the ualarm() routine is available.
2838 d_umask (d_umask.U):
2839 This variable conditionally defines the HAS_UMASK symbol, which
2840 indicates to the C program that the umask() routine is available.
2841 to set and get the value of the file creation mask.
2843 d_uname (d_gethname.U):
2844 This variable conditionally defines the HAS_UNAME symbol, which
2845 indicates to the C program that the uname() routine may be
2846 used to derive the host name.
2848 d_union_semun (d_union_semun.U):
2849 This variable conditionally defines HAS_UNION_SEMUN if the
2850 union semun is defined by including <sys/sem.h>.
2852 d_unlinkat (d_fsat.U):
2853 This variable conditionally defines the HAS_UNLINKAT symbol, which
2854 indicates the POSIX unlinkat() function isavailable.
2856 d_unordered (d_unordered.U):
2857 This variable conditionally defines the HAS_UNORDERED symbol, which
2858 indicates to the C program that the unordered() routine is available.
2860 d_unsetenv (d_unsetenv.U):
2861 This variable conditionally defines the HAS_UNSETENV symbol, which
2862 indicates to the C program that the unsetenv () routine is available.
2864 d_uselocale (d_newlocale.U):
2865 This variable conditionally defines the HAS_USELOCALE symbol, which
2866 indicates to the C program that the uselocale() routine is available
2867 to set the current locale for the calling thread.
2869 d_usleep (d_usleep.U):
2870 This variable conditionally defines HAS_USLEEP if usleep() is
2871 available to do high granularity sleeps.
2873 d_usleepproto (d_usleepproto.U):
2874 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2875 which indicates to the C program that the system provides
2876 a prototype for the usleep() function. Otherwise, it is
2877 up to the program to supply one.
2879 d_ustat (d_ustat.U):
2880 This variable conditionally defines HAS_USTAT if ustat() is
2881 available to query file system statistics by dev_t.
2883 d_vendorarch (vendorarch.U):
2884 This variable conditionally defined PERL_VENDORARCH.
2886 d_vendorbin (vendorbin.U):
2887 This variable conditionally defines PERL_VENDORBIN.
2889 d_vendorlib (vendorlib.U):
2890 This variable conditionally defines PERL_VENDORLIB.
2892 d_vendorscript (vendorscript.U):
2893 This variable conditionally defines PERL_VENDORSCRIPT.
2895 d_vfork (d_vfork.U):
2896 This variable conditionally defines the HAS_VFORK symbol, which
2897 indicates the vfork() routine is available.
2899 d_void_closedir (d_closedir.U):
2900 This variable conditionally defines VOID_CLOSEDIR if closedir()
2901 does not return a value.
2903 d_voidsig (d_voidsig.U):
2904 This variable conditionally defines VOIDSIG if this system
2905 declares "void (*signal(...))()" in signal.h. The old way was to
2906 declare it as "int (*signal(...))()".
2908 d_voidtty (i_sysioctl.U):
2909 This variable conditionally defines USE_IOCNOTTY to indicate that the
2910 ioctl() call with TIOCNOTTY should be used to void tty association.
2911 Otherwise (on USG probably), it is enough to close the standard file
2912 descriptors and do a setpgrp().
2914 d_vsnprintf (d_snprintf.U):
2915 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2916 indicates to the C program that the vsnprintf () library function
2919 d_wait4 (d_wait4.U):
2920 This variable conditionally defines the HAS_WAIT4 symbol, which
2921 indicates the wait4() routine is available.
2923 d_waitpid (d_waitpid.U):
2924 This variable conditionally defines HAS_WAITPID if waitpid() is
2925 available to wait for child process.
2927 d_wcrtomb (d_wcrtomb.U):
2928 This variable conditionally defines the HAS_WCRTOMB symbol if the
2929 wcrtomb() routine is available to be used to convert a wide character
2930 into a multi-byte character.
2932 d_wcscmp (d_wcscmp.U):
2933 This variable conditionally defines the HAS_WCSCMP symbol if the
2934 wcscmp() routine is available and can be used to compare wide
2937 d_wcstombs (d_wcstombs.U):
2938 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2939 indicates to the C program that the wcstombs() routine is available
2940 to convert wide character strings to multibyte strings.
2942 d_wcsxfrm (d_wcsxfrm.U):
2943 This variable conditionally defines the HAS_WCSXFRM symbol if the
2944 wcsxfrm() routine is available and can be used to compare wide
2947 d_wctomb (d_wctomb.U):
2948 This variable conditionally defines the HAS_WCTOMB symbol, which
2949 indicates to the C program that the wctomb() routine is available
2950 to convert a wide character to a multibyte.
2952 d_writev (d_writev.U):
2953 This variable conditionally defines the HAS_WRITEV symbol, which
2954 indicates to the C program that the writev() routine is available.
2957 This variable conditionally defines the symbol XENIX, which alerts
2958 the C program that it runs under Xenix.
2961 This variable is used internally by Configure to determine the
2962 full pathname (if any) of the date program. After Configure runs,
2963 the value is reset to a plain "date" and is not useful.
2965 db_hashtype (i_db.U):
2966 This variable contains the type of the hash structure element
2967 in the <db.h> header file. In older versions of DB, it was
2968 int, while in newer ones it is u_int32_t.
2970 db_prefixtype (i_db.U):
2971 This variable contains the type of the prefix structure element
2972 in the <db.h> header file. In older versions of DB, it was
2973 int, while in newer ones it is size_t.
2975 db_version_major (i_db.U):
2976 This variable contains the major version number of
2977 Berkeley DB found in the <db.h> header file.
2979 db_version_minor (i_db.U):
2980 This variable contains the minor version number of
2981 Berkeley DB found in the <db.h> header file.
2982 For DB version 1 this is always 0.
2984 db_version_patch (i_db.U):
2985 This variable contains the patch version number of
2986 Berkeley DB found in the <db.h> header file.
2987 For DB version 1 this is always 0.
2989 default_inc_excludes_dot (defaultincdot.U):
2990 When defined, remove the legacy '.' from @INC
2992 direntrytype (i_dirent.U):
2993 This symbol is set to 'struct direct' or 'struct dirent' depending on
2994 whether dirent is available or not. You should use this pseudo type to
2995 portably declare your directory entries.
2998 This variable contains the extension that is to be used for the
2999 dynamically loaded modules that perl generates.
3002 This variable contains the name of the dynamic loading file that
3003 will be used with the package.
3005 doubleinfbytes (infnan.U):
3006 This variable contains comma-separated list of hexadecimal bytes
3007 for the double precision infinity.
3009 doublekind (longdblfio.U):
3010 This variable, if defined, encodes the type of a double:
3011 1 = IEEE 754 32-bit little endian,
3012 2 = IEEE 754 32-bit big endian,
3013 3 = IEEE 754 64-bit little endian,
3014 4 = IEEE 754 64-bit big endian,
3015 5 = IEEE 754 128-bit little endian,
3016 6 = IEEE 754 128-bit big endian,
3017 7 = IEEE 754 64-bit mixed endian le-be,
3018 8 = IEEE 754 64-bit mixed endian be-le,
3019 9 = VAX 32bit little endian F float format
3020 10 = VAX 64bit little endian D float format
3021 11 = VAX 64bit little endian G float format
3022 12 = IBM 32bit format
3023 13 = IBM 64bit format
3024 14 = Cray 64bit format
3025 -1 = unknown format.
3027 doublemantbits (mantbits.U):
3028 This symbol, if defined, tells how many mantissa bits
3029 there are in double precision floating point format.
3030 Note that this is usually DBL_MANT_DIG minus one, since
3031 with the standard IEEE 754 formats DBL_MANT_DIG includes
3032 the implicit bit which doesn't really exist.
3034 doublenanbytes (infnan.U):
3035 This variable contains comma-separated list of hexadecimal bytes
3036 for the double precision not-a-number.
3038 doublesize (doublesize.U):
3039 This variable contains the value of the DOUBLESIZE symbol, which
3040 indicates to the C program how many bytes there are in a double.
3042 drand01 (randfunc.U):
3043 Indicates the macro to be used to generate normalized
3044 random numbers. Uses randfunc, often divided by
3045 (double) (((unsigned long) 1 << randbits)) in order to
3046 normalize the result.
3047 In C programs, the macro 'Drand01' is mapped to drand01.
3049 drand48_r_proto (d_drand48_r.U):
3050 This variable encodes the prototype of drand48_r.
3051 It is zero if d_drand48_r is undef, and one of the
3052 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
3055 dtrace (usedtrace.U):
3056 This variable holds the location of the dtrace executable.
3058 dtraceobject (dtraceobject.U):
3059 Whether we need to build an object file with the dtrace tool.
3061 dtracexnolibs (dtraceobject.U):
3062 Whether dtrace accepts -xnolibs. If available we call dtrace -h
3063 and dtrace -G with -xnolibs to allow dtrace to run in a jail on
3066 dynamic_ext (Extensions.U):
3067 This variable holds a list of XS extension files we want to
3068 link dynamically into the package. It is used by Makefile.
3070 eagain (nblock_io.U):
3071 This variable bears the symbolic errno code set by read() when no
3072 data is present on the file and non-blocking I/O was enabled (otherwise,
3073 read() blocks naturally).
3076 This variable conditionally defines EBCDIC if this
3077 system uses EBCDIC encoding.
3080 This variable is used internally by Configure to determine the
3081 full pathname (if any) of the echo program. After Configure runs,
3082 the value is reset to a plain "echo" and is not useful.
3085 This variable is used internally by Configure to determine the
3086 full pathname (if any) of the egrep program. After Configure runs,
3087 the value is reset to a plain "egrep" and is not useful.
3090 This variable is defined but not used by Configure.
3091 The value is the empty string and is not useful.
3093 endgrent_r_proto (d_endgrent_r.U):
3094 This variable encodes the prototype of endgrent_r.
3095 It is zero if d_endgrent_r is undef, and one of the
3096 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
3099 endhostent_r_proto (d_endhostent_r.U):
3100 This variable encodes the prototype of endhostent_r.
3101 It is zero if d_endhostent_r is undef, and one of the
3102 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
3105 endnetent_r_proto (d_endnetent_r.U):
3106 This variable encodes the prototype of endnetent_r.
3107 It is zero if d_endnetent_r is undef, and one of the
3108 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
3111 endprotoent_r_proto (d_endprotoent_r.U):
3112 This variable encodes the prototype of endprotoent_r.
3113 It is zero if d_endprotoent_r is undef, and one of the
3114 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
3117 endpwent_r_proto (d_endpwent_r.U):
3118 This variable encodes the prototype of endpwent_r.
3119 It is zero if d_endpwent_r is undef, and one of the
3120 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
3123 endservent_r_proto (d_endservent_r.U):
3124 This variable encodes the prototype of endservent_r.
3125 It is zero if d_endservent_r is undef, and one of the
3126 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
3130 When running under Eunice this variable contains a command which will
3131 convert a shell script to the proper form of text file for it to be
3132 executable by the shell. On other systems it is a no-op.
3135 This is an old synonym for _exe.
3138 This variable is used internally by Configure to determine the
3139 full pathname (if any) of the expr program. After Configure runs,
3140 the value is reset to a plain "expr" and is not useful.
3142 extensions (Extensions.U):
3143 This variable holds a list of all extension files (both XS and
3144 non-xs) installed with the package. It is propagated to Config.pm
3145 and is typically used to test whether a particular extension
3149 ANSI C requires 'extern' where C++ requires 'extern "C"'. This
3150 variable can be used in Configure to do the right thing.
3153 This variable holds a list of extra modules to install.
3155 fflushall (fflushall.U):
3156 This symbol, if defined, tells that to flush
3157 all pending stdio output one must loop through all
3158 the stdio file handles stored in an array and fflush them.
3159 Note that if fflushNULL is defined, fflushall will not
3160 even be probed for and will be left undefined.
3162 fflushNULL (fflushall.U):
3163 This symbol, if defined, tells that fflush(NULL) correctly
3164 flushes all pending stdio output without side effects. In
3165 particular, on some platforms calling fflush(NULL) *still*
3166 corrupts STDIN if it is a pipe.
3169 This variable is defined but not used by Configure.
3170 The value is the empty string and is not useful.
3172 firstmakefile (Unix.U):
3173 This variable defines the first file searched by make. On unix,
3174 it is makefile (then Makefile). On case-insensitive systems,
3175 it might be something else. This is only used to deal with
3176 convoluted make depend tricks.
3179 This variable is defined but not used by Configure.
3180 The value is the empty string and is not useful.
3182 fpossize (fpossize.U):
3183 This variable contains the size of a fpostype in bytes.
3185 fpostype (fpostype.U):
3186 This variable defines Fpos_t to be something like fpos_t, long,
3187 uint, or whatever type is used to declare file positions in libc.
3189 freetype (mallocsrc.U):
3190 This variable contains the return type of free(). It is usually
3191 void, but occasionally int.
3194 This variable contains the command used by Configure
3195 to copy files from the target host. Useful and available
3196 only during Perl build.
3197 The string ':' if not cross-compiling.
3200 This variable contains the full pathname to 'ar', whether or
3201 not the user has specified 'portability'. This is only used
3205 This variable contains the full pathname to 'csh', whether or
3206 not the user has specified 'portability'. This is only used
3207 in the compiled C program, and we assume that all systems which
3208 can share this executable will have the same full pathname to
3211 full_sed (Loc_sed.U):
3212 This variable contains the full pathname to 'sed', whether or
3213 not the user has specified 'portability'. This is only used
3214 in the compiled C program, and we assume that all systems which
3215 can share this executable will have the same full pathname to
3218 gccansipedantic (gccvers.U):
3219 If GNU cc (gcc) is used, this variable will enable (if set) the
3220 -ansi and -pedantic ccflags for building core files (through
3221 cflags script). (See Porting/pumpkin.pod for full description).
3223 gccosandvers (gccvers.U):
3224 If GNU cc (gcc) is used, this variable holds the operating system
3225 and version used to compile gcc. It is set to '' if not gcc,
3226 or if nothing useful can be parsed as the os version.
3228 gccversion (gccvers.U):
3229 If GNU cc (gcc) is used, this variable holds '1' or '2' to
3230 indicate whether the compiler is version 1 or 2. This is used in
3231 setting some of the default cflags. It is set to '' if not gcc.
3233 getgrent_r_proto (d_getgrent_r.U):
3234 This variable encodes the prototype of getgrent_r.
3235 It is zero if d_getgrent_r is undef, and one of the
3236 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
3239 getgrgid_r_proto (d_getgrgid_r.U):
3240 This variable encodes the prototype of getgrgid_r.
3241 It is zero if d_getgrgid_r is undef, and one of the
3242 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
3245 getgrnam_r_proto (d_getgrnam_r.U):
3246 This variable encodes the prototype of getgrnam_r.
3247 It is zero if d_getgrnam_r is undef, and one of the
3248 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
3251 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
3252 This variable encodes the prototype of gethostbyaddr_r.
3253 It is zero if d_gethostbyaddr_r is undef, and one of the
3254 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
3257 gethostbyname_r_proto (d_gethostbyname_r.U):
3258 This variable encodes the prototype of gethostbyname_r.
3259 It is zero if d_gethostbyname_r is undef, and one of the
3260 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
3263 gethostent_r_proto (d_gethostent_r.U):
3264 This variable encodes the prototype of gethostent_r.
3265 It is zero if d_gethostent_r is undef, and one of the
3266 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
3269 getlogin_r_proto (d_getlogin_r.U):
3270 This variable encodes the prototype of getlogin_r.
3271 It is zero if d_getlogin_r is undef, and one of the
3272 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
3275 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
3276 This variable encodes the prototype of getnetbyaddr_r.
3277 It is zero if d_getnetbyaddr_r is undef, and one of the
3278 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
3281 getnetbyname_r_proto (d_getnetbyname_r.U):
3282 This variable encodes the prototype of getnetbyname_r.
3283 It is zero if d_getnetbyname_r is undef, and one of the
3284 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
3287 getnetent_r_proto (d_getnetent_r.U):
3288 This variable encodes the prototype of getnetent_r.
3289 It is zero if d_getnetent_r is undef, and one of the
3290 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
3293 getprotobyname_r_proto (d_getprotobyname_r.U):
3294 This variable encodes the prototype of getprotobyname_r.
3295 It is zero if d_getprotobyname_r is undef, and one of the
3296 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
3299 getprotobynumber_r_proto (d_getprotobynumber_r.U):
3300 This variable encodes the prototype of getprotobynumber_r.
3301 It is zero if d_getprotobynumber_r is undef, and one of the
3302 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
3305 getprotoent_r_proto (d_getprotoent_r.U):
3306 This variable encodes the prototype of getprotoent_r.
3307 It is zero if d_getprotoent_r is undef, and one of the
3308 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
3311 getpwent_r_proto (d_getpwent_r.U):
3312 This variable encodes the prototype of getpwent_r.
3313 It is zero if d_getpwent_r is undef, and one of the
3314 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
3317 getpwnam_r_proto (d_getpwnam_r.U):
3318 This variable encodes the prototype of getpwnam_r.
3319 It is zero if d_getpwnam_r is undef, and one of the
3320 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
3323 getpwuid_r_proto (d_getpwuid_r.U):
3324 This variable encodes the prototype of getpwuid_r.
3325 It is zero if d_getpwuid_r is undef, and one of the
3326 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
3329 getservbyname_r_proto (d_getservbyname_r.U):
3330 This variable encodes the prototype of getservbyname_r.
3331 It is zero if d_getservbyname_r is undef, and one of the
3332 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
3335 getservbyport_r_proto (d_getservbyport_r.U):
3336 This variable encodes the prototype of getservbyport_r.
3337 It is zero if d_getservbyport_r is undef, and one of the
3338 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
3341 getservent_r_proto (d_getservent_r.U):
3342 This variable encodes the prototype of getservent_r.
3343 It is zero if d_getservent_r is undef, and one of the
3344 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
3347 getspnam_r_proto (d_getspnam_r.U):
3348 This variable encodes the prototype of getspnam_r.
3349 It is zero if d_getspnam_r is undef, and one of the
3350 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
3354 This variable contains the format string used for printing a Gid_t.
3356 gidsign (gidsign.U):
3357 This variable contains the signedness of a gidtype.
3358 1 for unsigned, -1 for signed.
3360 gidsize (gidsize.U):
3361 This variable contains the size of a gidtype in bytes.
3363 gidtype (gidtype.U):
3364 This variable defines Gid_t to be something like gid_t, int,
3365 ushort, or whatever type is used to declare the return type
3366 of getgid(). Typically, it is the type of group ids in the kernel.
3369 This variable holds the general path (space-separated) used to
3370 find libraries. It may contain directories that do not exist on
3371 this platform, libpth is the cleaned-up version.
3374 This variable is used internally by Configure to determine the
3375 full pathname (if any) of the gmake program. After Configure runs,
3376 the value is reset to a plain "gmake" and is not useful.
3378 gmtime_r_proto (d_gmtime_r.U):
3379 This variable encodes the prototype of gmtime_r.
3380 It is zero if d_gmtime_r is undef, and one of the
3381 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
3384 gnulibc_version (d_gnulibc.U):
3385 This variable contains the version number of the GNU C library.
3386 It is usually something like '2.2.5'. It is a plain '' if this
3387 is not the GNU C library, or if the version is unknown.
3390 This variable is used internally by Configure to determine the
3391 full pathname (if any) of the grep program. After Configure runs,
3392 the value is reset to a plain "grep" and is not useful.
3395 This variable contains a command that produces the text of the
3396 /etc/group file. This is normally "cat /etc/group", but can be
3397 "ypcat group" when NIS is used.
3398 On some systems, such as os390, there may be no equivalent
3399 command, in which case this variable is unset.
3401 groupstype (groupstype.U):
3402 This variable defines Groups_t to be something like gid_t, int,
3403 ushort, or whatever type is used for the second argument to
3404 getgroups() and setgroups(). Usually, this is the same as
3405 gidtype (gid_t), but sometimes it isn't.
3408 This variable is used internally by Configure to determine the
3409 full pathname (if any) of the gzip program. After Configure runs,
3410 the value is reset to a plain "gzip" and is not useful.
3412 h_fcntl (h_fcntl.U):
3413 This is variable gets set in various places to tell i_fcntl that
3414 <fcntl.h> should be included.
3416 h_sysfile (h_sysfile.U):
3417 This is variable gets set in various places to tell i_sys_file that
3418 <sys/file.h> should be included.
3421 Gives the type of hints used for previous answers. May be one of
3422 "default", "recommended" or "previous".
3425 This variable contains a command that produces the text of the
3426 /etc/hosts file. This is normally "cat /etc/hosts", but can be
3427 "ypcat hosts" when NIS is used.
3428 On some systems, such as os390, there may be no equivalent
3429 command, in which case this variable is unset.
3431 hostgenerate (Cross.U):
3432 This variable contains the path to a generate_uudmap binary that
3433 can be run on the host OS when cross-compiling. Useful and
3434 available only during Perl build.
3435 Empty string '' if not cross-compiling.
3437 hostosname (Cross.U):
3438 This variable contains the original value of '$^O' for hostperl
3439 when cross-compiling. This is useful to pick the proper tools
3440 when running build code in the host.
3441 Empty string '' if not cross-compiling.
3444 This variable contains the path to a miniperl binary that can be
3445 run on the host OS when cross-compiling. Useful and available only
3447 Empty string '' if not cross-compiling.
3449 html1dir (html1dir.U):
3450 This variable contains the name of the directory in which html
3451 source pages are to be put. This directory is for pages
3452 that describe whole programs, not libraries or modules. It
3453 is intended to correspond roughly to section 1 of the Unix
3456 html1direxp (html1dir.U):
3457 This variable is the same as the html1dir variable, but is filename
3458 expanded at configuration time, for convenient use in makefiles.
3460 html3dir (html3dir.U):
3461 This variable contains the name of the directory in which html
3462 source pages are to be put. This directory is for pages
3463 that describe libraries or modules. It is intended to
3464 correspond roughly to section 3 of the Unix manuals.
3466 html3direxp (html3dir.U):
3467 This variable is the same as the html3dir variable, but is filename
3468 expanded at configuration time, for convenient use in makefiles.
3471 This variable is the size of an I16 in bytes.
3474 This variable contains the C type used for Perl's I16.
3477 This variable is the size of an I32 in bytes.
3480 This variable contains the C type used for Perl's I32.
3483 This variable is the size of an I64 in bytes.
3486 This variable contains the C type used for Perl's I64.
3489 This variable is the size of an I8 in bytes.
3492 This variable contains the C type used for Perl's I8.
3494 i_arpainet (i_arpainet.U):
3495 This variable conditionally defines the I_ARPA_INET symbol,
3496 and indicates whether a C program should include <arpa/inet.h>.
3499 This variable conditionally defines the I_BFD symbol, and
3500 indicates whether a C program can include <bfd.h>.
3502 i_bsdioctl (i_sysioctl.U):
3503 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
3504 indicates to the C program that <sys/bsdioctl.h> exists and should
3507 i_crypt (i_crypt.U):
3508 This variable conditionally defines the I_CRYPT symbol, and indicates
3509 whether a C program should include <crypt.h>.
3512 This variable conditionally defines the I_DB symbol, and indicates
3513 whether a C program may include Berkeley's DB include file <db.h>.
3516 This variable conditionally defines the I_DBM symbol, which
3517 indicates to the C program that <dbm.h> exists and should
3520 i_dirent (i_dirent.U):
3521 This variable conditionally defines I_DIRENT, which indicates
3522 to the C program that it should include <dirent.h>.
3524 i_dlfcn (i_dlfcn.U):
3525 This variable conditionally defines the I_DLFCN symbol, which
3526 indicates to the C program that <dlfcn.h> exists and should
3529 i_execinfo (i_execinfo.U):
3530 This variable conditionally defines the I_EXECINFO symbol, and indicates
3531 whether a C program may include <execinfo.h>, for backtrace() support.
3533 i_fcntl (i_fcntl.U):
3534 This variable controls the value of I_FCNTL (which tells
3535 the C program to include <fcntl.h>).
3538 This variable conditionally defines the I_FENV symbol, which
3539 indicates to the C program that <fenv.h> exists and should
3543 This variable conditionally defines the I_FP symbol, and indicates
3544 whether a C program should include <fp.h>.
3546 i_fp_class (i_fp_class.U):
3547 This variable conditionally defines the I_FP_CLASS symbol, and indicates
3548 whether a C program should include <fp_class.h>.
3551 This variable conditionally defines the I_GDBM symbol, which
3552 indicates to the C program that <gdbm.h> exists and should
3555 i_gdbm_ndbm (i_ndbm.U):
3556 This variable conditionally defines the I_GDBM_NDBM symbol, which
3557 indicates to the C program that <gdbm-ndbm.h> exists and should
3558 be included. This is the location of the ndbm.h compatibility file
3561 i_gdbmndbm (i_ndbm.U):
3562 This variable conditionally defines the I_GDBMNDBM symbol, which
3563 indicates to the C program that <gdbm/ndbm.h> exists and should
3564 be included. This was the location of the ndbm.h compatibility file
3568 This variable conditionally defines the I_GRP symbol, and indicates
3569 whether a C program should include <grp.h>.
3571 i_ieeefp (i_ieeefp.U):
3572 This variable conditionally defines the I_IEEEFP symbol, and indicates
3573 whether a C program should include <ieeefp.h>.
3575 i_inttypes (i_inttypes.U):
3576 This variable conditionally defines the I_INTTYPES symbol,
3577 and indicates whether a C program should include <inttypes.h>.
3579 i_langinfo (i_langinfo.U):
3580 This variable conditionally defines the I_LANGINFO symbol,
3581 and indicates whether a C program should include <langinfo.h>.
3583 i_libutil (i_libutil.U):
3584 This variable conditionally defines the I_LIBUTIL symbol, and indicates
3585 whether a C program should include <libutil.h>.
3587 i_locale (i_locale.U):
3588 This variable conditionally defines the I_LOCALE symbol,
3589 and indicates whether a C program should include <locale.h>.
3591 i_machcthr (i_machcthr.U):
3592 This variable conditionally defines the I_MACH_CTHREADS symbol,
3593 and indicates whether a C program should include <mach/cthreads.h>.
3595 i_malloc (i_malloc.U):
3596 This variable conditionally defines the I_MALLOC symbol, and indicates
3597 whether a C program should include <malloc.h>.
3599 i_mallocmalloc (i_mallocmalloc.U):
3600 This variable conditionally defines the I_MALLOCMALLOC symbol,
3601 and indicates whether a C program should include <malloc/malloc.h>.
3603 i_mntent (i_mntent.U):
3604 This variable conditionally defines the I_MNTENT symbol, and indicates
3605 whether a C program should include <mntent.h>.
3608 This variable conditionally defines the I_NDBM symbol, which
3609 indicates to the C program that <ndbm.h> exists and should
3612 i_netdb (i_netdb.U):
3613 This variable conditionally defines the I_NETDB symbol, and indicates
3614 whether a C program should include <netdb.h>.
3616 i_neterrno (i_neterrno.U):
3617 This variable conditionally defines the I_NET_ERRNO symbol, which
3618 indicates to the C program that <net/errno.h> exists and should
3621 i_netinettcp (i_netinettcp.U):
3622 This variable conditionally defines the I_NETINET_TCP symbol,
3623 and indicates whether a C program should include <netinet/tcp.h>.
3626 This variable conditionally defines I_NETINET_IN, which indicates
3627 to the C program that it should include <netinet/in.h>. Otherwise,
3628 you may try <sys/in.h>.
3631 This variable conditionally defines the I_POLL symbol, and indicates
3632 whether a C program should include <poll.h>.
3635 This variable conditionally defines the I_PROT symbol, and indicates
3636 whether a C program should include <prot.h>.
3638 i_pthread (i_pthread.U):
3639 This variable conditionally defines the I_PTHREAD symbol,
3640 and indicates whether a C program should include <pthread.h>.
3643 This variable conditionally defines I_PWD, which indicates
3644 to the C program that it should include <pwd.h>.
3646 i_quadmath (i_quadmath.U):
3647 This variable conditionally defines I_QUADMATH, which indicates
3648 to the C program that it should include <quadmath.h>.
3650 i_rpcsvcdbm (i_dbm.U):
3651 This variable conditionally defines the I_RPCSVC_DBM symbol, which
3652 indicates to the C program that <rpcsvc/dbm.h> exists and should
3653 be included. Some System V systems might need this instead of <dbm.h>.
3655 i_sgtty (i_termio.U):
3656 This variable conditionally defines the I_SGTTY symbol, which
3657 indicates to the C program that it should include <sgtty.h> rather
3660 i_shadow (i_shadow.U):
3661 This variable conditionally defines the I_SHADOW symbol, and indicates
3662 whether a C program should include <shadow.h>.
3664 i_socks (i_socks.U):
3665 This variable conditionally defines the I_SOCKS symbol, and indicates
3666 whether a C program should include <socks.h>.
3668 i_stdbool (i_stdbool.U):
3669 This variable conditionally defines the I_STDBOOL symbol, which
3670 indicates to the C program that <stdbool.h> exists and should
3673 i_stdint (i_stdint.U):
3674 This variable conditionally defines the I_STDINT symbol, which
3675 indicates to the C program that <stdint.h> exists and should
3678 i_stdlib (i_stdlib.U):
3679 This variable unconditionally defines the I_STDLIB symbol.
3681 i_sunmath (i_sunmath.U):
3682 This variable conditionally defines the I_SUNMATH symbol, and indicates
3683 whether a C program should include <sunmath.h>.
3685 i_sysaccess (i_sysaccess.U):
3686 This variable conditionally defines the I_SYS_ACCESS symbol,
3687 and indicates whether a C program should include <sys/access.h>.
3689 i_sysdir (i_sysdir.U):
3690 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3691 whether a C program should include <sys/dir.h>.
3693 i_sysfile (i_sysfile.U):
3694 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3695 whether a C program should include <sys/file.h> to get R_OK and friends.
3697 i_sysfilio (i_sysioctl.U):
3698 This variable conditionally defines the I_SYS_FILIO symbol, which
3699 indicates to the C program that <sys/filio.h> exists and should
3700 be included in preference to <sys/ioctl.h>.
3703 This variable conditionally defines I_SYS_IN, which indicates
3704 to the C program that it should include <sys/in.h> instead of
3707 i_sysioctl (i_sysioctl.U):
3708 This variable conditionally defines the I_SYS_IOCTL symbol, which
3709 indicates to the C program that <sys/ioctl.h> exists and should
3712 i_syslog (i_syslog.U):
3713 This variable conditionally defines the I_SYSLOG symbol,
3714 and indicates whether a C program should include <syslog.h>.
3716 i_sysmman (i_sysmman.U):
3717 This variable conditionally defines the I_SYS_MMAN symbol,
3718 and indicates whether a C program should include <sys/mman.h>.
3720 i_sysmode (i_sysmode.U):
3721 This variable conditionally defines the I_SYSMODE symbol,
3722 and indicates whether a C program should include <sys/mode.h>.
3724 i_sysmount (i_sysmount.U):
3725 This variable conditionally defines the I_SYSMOUNT symbol,
3726 and indicates whether a C program should include <sys/mount.h>.
3728 i_sysndir (i_sysndir.U):
3729 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3730 whether a C program should include <sys/ndir.h>.
3732 i_sysparam (i_sysparam.U):
3733 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3734 whether a C program should include <sys/param.h>.
3736 i_syspoll (i_syspoll.U):
3737 This variable conditionally defines the I_SYS_POLL symbol, which
3738 indicates to the C program that it should include <sys/poll.h>.
3740 i_sysresrc (i_sysresrc.U):
3741 This variable conditionally defines the I_SYS_RESOURCE symbol,
3742 and indicates whether a C program should include <sys/resource.h>.
3744 i_syssecrt (i_syssecrt.U):
3745 This variable conditionally defines the I_SYS_SECURITY symbol,
3746 and indicates whether a C program should include <sys/security.h>.
3748 i_sysselct (i_sysselct.U):
3749 This variable conditionally defines I_SYS_SELECT, which indicates
3750 to the C program that it should include <sys/select.h> in order to
3751 get the definition of struct timeval.
3753 i_syssockio (i_sysioctl.U):
3754 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3755 C program that socket ioctl codes may be found in <sys/sockio.h>
3756 instead of <sys/ioctl.h>.
3758 i_sysstat (i_sysstat.U):
3759 This variable conditionally defines the I_SYS_STAT symbol,
3760 and indicates whether a C program should include <sys/stat.h>.
3762 i_sysstatfs (i_sysstatfs.U):
3763 This variable conditionally defines the I_SYSSTATFS symbol,
3764 and indicates whether a C program should include <sys/statfs.h>.
3766 i_sysstatvfs (i_sysstatvfs.U):
3767 This variable conditionally defines the I_SYSSTATVFS symbol,
3768 and indicates whether a C program should include <sys/statvfs.h>.
3770 i_systime (i_time.U):
3771 This variable conditionally defines I_SYS_TIME, which indicates
3772 to the C program that it should include <sys/time.h>.
3774 i_systimek (i_time.U):
3775 This variable conditionally defines I_SYS_TIME_KERNEL, which
3776 indicates to the C program that it should include <sys/time.h>
3777 with KERNEL defined.
3779 i_systimes (i_systimes.U):
3780 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3781 whether a C program should include <sys/times.h>.
3783 i_systypes (i_systypes.U):
3784 This variable conditionally defines the I_SYS_TYPES symbol,
3785 and indicates whether a C program should include <sys/types.h>.
3787 i_sysuio (i_sysuio.U):
3788 This variable conditionally defines the I_SYSUIO symbol, and indicates
3789 whether a C program should include <sys/uio.h>.
3791 i_sysun (i_sysun.U):
3792 This variable conditionally defines I_SYS_UN, which indicates
3793 to the C program that it should include <sys/un.h> to get UNIX
3794 domain socket definitions.
3796 i_sysutsname (i_sysutsname.U):
3797 This variable conditionally defines the I_SYSUTSNAME symbol,
3798 and indicates whether a C program should include <sys/utsname.h>.
3800 i_sysvfs (i_sysvfs.U):
3801 This variable conditionally defines the I_SYSVFS symbol,
3802 and indicates whether a C program should include <sys/vfs.h>.
3804 i_syswait (i_syswait.U):
3805 This variable conditionally defines I_SYS_WAIT, which indicates
3806 to the C program that it should include <sys/wait.h>.
3808 i_termio (i_termio.U):
3809 This variable conditionally defines the I_TERMIO symbol, which
3810 indicates to the C program that it should include <termio.h> rather
3813 i_termios (i_termio.U):
3814 This variable conditionally defines the I_TERMIOS symbol, which
3815 indicates to the C program that the POSIX <termios.h> file is
3819 This variable unconditionally defines I_TIME, which indicates
3820 to the C program that it should include <time.h>.
3822 i_unistd (i_unistd.U):
3823 This variable conditionally defines the I_UNISTD symbol, and indicates
3824 whether a C program should include <unistd.h>.
3826 i_ustat (i_ustat.U):
3827 This variable conditionally defines the I_USTAT symbol, and indicates
3828 whether a C program should include <ustat.h>.
3830 i_utime (i_utime.U):
3831 This variable conditionally defines the I_UTIME symbol, and indicates
3832 whether a C program should include <utime.h>.
3834 i_vfork (i_vfork.U):
3835 This variable conditionally defines the I_VFORK symbol, and indicates
3836 whether a C program should include vfork.h.
3838 i_wchar (i_wchar.U):
3839 This variable conditionally defines the I_WCHAR symbol,
3840 that indicates whether a C program may include <wchar.h>.
3842 i_wctype (i_wctype.U):
3843 This variable conditionally defines the I_WCTYPE symbol,
3844 that indicates whether a C program may include <wctype.h>.
3846 i_xlocale (d_newlocale.U):
3847 This symbol, if defined, indicates to the C program that it should
3848 include <xlocale.h> to get uselocale() and its friends
3850 ignore_versioned_solibs (libs.U):
3851 This variable should be non-empty if non-versioned shared
3852 libraries (libfoo.so.x.y) are to be ignored (because they
3853 cannot be linked against).
3855 inc_version_list (inc_version_list.U):
3856 This variable specifies the list of subdirectories in over
3857 which perl.c:incpush() and lib/lib.pm will automatically
3858 search when adding directories to @INC. The elements in
3859 the list are separated by spaces. This is only useful
3860 if you have a perl library directory tree structured like the
3861 default one. See INSTALL for how this works. The versioned
3862 site_perl directory was introduced in 5.005, so that is the
3863 lowest possible value.
3865 This list includes architecture-dependent directories back to
3866 version $api_versionstring (e.g. 5.5.640) and
3867 architecture-independent directories all the way back to
3870 inc_version_list_init (inc_version_list.U):
3871 This variable holds the same list as inc_version_list, but
3872 each item is enclosed in double quotes and separated by commas,
3873 suitable for use in the PERL_INC_VERSION_LIST initialization.
3876 This variable must precede the normal include path to get the
3877 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3878 Value can be "" or "/bsd43" on mips.
3881 This variable must precede the normal include path to get the
3882 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3883 Value can be "" or "/bsd43" on mips.
3886 This variable is defined but not used by Configure.
3887 The value is the empty string and is not useful.
3889 initialinstalllocation (bin.U):
3890 When userelocatableinc is true, this variable holds the location
3891 that make install should copy the perl binary to, with all the
3892 run-time relocatable paths calculated from this at install time.
3893 When used, it is initialized to the original value of binexp, and
3894 then binexp is set to '.../', as the other binaries are found
3895 relative to the perl binary.
3897 installarchlib (archlib.U):
3898 This variable is really the same as archlibexp but may differ on
3899 those systems using AFS. For extra portability, only this variable
3900 should be used in makefiles.
3903 This variable is the same as binexp unless AFS is running in which case
3904 the user is explicitly prompted for it. This variable should always
3905 be used in your makefiles for maximum portability.
3907 installhtml1dir (html1dir.U):
3908 This variable is really the same as html1direxp, unless you are
3909 using a different installprefix. For extra portability, you
3910 should only use this variable within your makefiles.
3912 installhtml3dir (html3dir.U):
3913 This variable is really the same as html3direxp, unless you are
3914 using a different installprefix. For extra portability, you
3915 should only use this variable within your makefiles.
3917 installman1dir (man1dir.U):
3918 This variable is really the same as man1direxp, unless you are using
3919 AFS in which case it points to the read/write location whereas
3920 man1direxp only points to the read-only access location. For extra
3921 portability, you should only use this variable within your makefiles.
3923 installman3dir (man3dir.U):
3924 This variable is really the same as man3direxp, unless you are using
3925 AFS in which case it points to the read/write location whereas
3926 man3direxp only points to the read-only access location. For extra
3927 portability, you should only use this variable within your makefiles.
3929 installprefix (installprefix.U):
3930 This variable holds the name of the directory below which
3931 "make install" will install the package. For most users, this
3932 is the same as prefix. However, it is useful for
3933 installing the software into a different (usually temporary)
3934 location after which it can be bundled up and moved somehow
3935 to the final location specified by prefix.
3937 installprefixexp (installprefix.U):
3938 This variable holds the full absolute path of installprefix
3939 with all ~-expansion done.
3941 installprivlib (privlib.U):
3942 This variable is really the same as privlibexp but may differ on
3943 those systems using AFS. For extra portability, only this variable
3944 should be used in makefiles.
3946 installscript (scriptdir.U):
3947 This variable is usually the same as scriptdirexp, unless you are on
3948 a system running AFS, in which case they may differ slightly. You
3949 should always use this variable within your makefiles for portability.
3951 installsitearch (sitearch.U):
3952 This variable is really the same as sitearchexp but may differ on
3953 those systems using AFS. For extra portability, only this variable
3954 should be used in makefiles.
3956 installsitebin (sitebin.U):
3957 This variable is usually the same as sitebinexp, unless you are on
3958 a system running AFS, in which case they may differ slightly. You
3959 should always use this variable within your makefiles for portability.
3961 installsitehtml1dir (sitehtml1dir.U):
3962 This variable is really the same as sitehtml1direxp, unless you are using
3963 AFS in which case it points to the read/write location whereas
3964 html1direxp only points to the read-only access location. For extra
3965 portability, you should only use this variable within your makefiles.
3967 installsitehtml3dir (sitehtml3dir.U):
3968 This variable is really the same as sitehtml3direxp, unless you are using
3969 AFS in which case it points to the read/write location whereas
3970 html3direxp only points to the read-only access location. For extra
3971 portability, you should only use this variable within your makefiles.
3973 installsitelib (sitelib.U):
3974 This variable is really the same as sitelibexp but may differ on
3975 those systems using AFS. For extra portability, only this variable
3976 should be used in makefiles.
3978 installsiteman1dir (siteman1dir.U):
3979 This variable is really the same as siteman1direxp, unless you are using
3980 AFS in which case it points to the read/write location whereas
3981 man1direxp only points to the read-only access location. For extra
3982 portability, you should only use this variable within your makefiles.
3984 installsiteman3dir (siteman3dir.U):
3985 This variable is really the same as siteman3direxp, unless you are using
3986 AFS in which case it points to the read/write location whereas
3987 man3direxp only points to the read-only access location. For extra
3988 portability, you should only use this variable within your makefiles.
3990 installsitescript (sitescript.U):
3991 This variable is usually the same as sitescriptexp, unless you are on
3992 a system running AFS, in which case they may differ slightly. You
3993 should always use this variable within your makefiles for portability.
3995 installstyle (installstyle.U):
3996 This variable describes the "style" of the perl installation.
3997 This is intended to be useful for tools that need to
3998 manipulate entire perl distributions. Perl itself doesn't use
3999 this to find its libraries -- the library directories are
4000 stored directly in Config.pm. Currently, there are only two
4001 styles: "lib" and "lib/perl5". The default library locations
4002 (e.g. privlib, sitelib) are either $prefix/lib or
4003 $prefix/lib/perl5. The former is useful if $prefix is a
4004 directory dedicated to perl (e.g. /opt/perl), while the latter
4005 is useful if $prefix is shared by many packages, e.g. if
4008 Unfortunately, while this "style" variable is used to set
4009 defaults for all three directory hierarchies (core, vendor, and
4010 site), there is no guarantee that the same style is actually
4011 appropriate for all those directories. For example, $prefix
4012 might be /opt/perl, but $siteprefix might be /usr/local.
4013 (Perhaps, in retrospect, the "lib" style should never have been
4014 supported, but it did seem like a nice idea at the time.)
4016 The situation is even less clear for tools such as MakeMaker
4017 that can be used to install additional modules into
4018 non-standard places. For example, if a user intends to install
4019 a module into a private directory (perhaps by setting PREFIX on
4020 the Makefile.PL command line), then there is no reason to
4021 assume that the Configure-time $installstyle setting will be
4022 relevant for that PREFIX.
4024 This may later be extended to include other information, so
4025 be careful with pattern-matching on the results.
4027 For compatibility with perl5.005 and earlier, the default
4028 setting is based on whether or not $prefix contains the string
4031 installusrbinperl (instubperl.U):
4032 This variable tells whether Perl should be installed also as
4033 /usr/bin/perl in addition to
4036 installvendorarch (vendorarch.U):
4037 This variable is really the same as vendorarchexp but may differ on
4038 those systems using AFS. For extra portability, only this variable
4039 should be used in makefiles.
4041 installvendorbin (vendorbin.U):
4042 This variable is really the same as vendorbinexp but may differ on
4043 those systems using AFS. For extra portability, only this variable
4044 should be used in makefiles.
4046 installvendorhtml1dir (vendorhtml1dir.U):
4047 This variable is really the same as vendorhtml1direxp but may differ on
4048 those systems using AFS. For extra portability, only this variable
4049 should be used in makefiles.
4051 installvendorhtml3dir (vendorhtml3dir.U):
4052 This variable is really the same as vendorhtml3direxp but may differ on
4053 those systems using AFS. For extra portability, only this variable
4054 should be used in makefiles.
4056 installvendorlib (vendorlib.U):
4057 This variable is really the same as vendorlibexp but may differ on
4058 those systems using AFS. For extra portability, only this variable
4059 should be used in makefiles.
4061 installvendorman1dir (vendorman1dir.U):
4062 This variable is really the same as vendorman1direxp but may differ on
4063 those systems using AFS. For extra portability, only this variable
4064 should be used in makefiles.
4066 installvendorman3dir (vendorman3dir.U):
4067 This variable is really the same as vendorman3direxp but may differ on
4068 those systems using AFS. For extra portability, only this variable
4069 should be used in makefiles.
4071 installvendorscript (vendorscript.U):
4072 This variable is really the same as vendorscriptexp but may differ on
4073 those systems using AFS. For extra portability, only this variable
4074 should be used in makefiles.
4076 intsize (intsize.U):
4077 This variable contains the value of the INTSIZE symbol, which
4078 indicates to the C program how many bytes there are in an int.
4080 issymlink (issymlink.U):
4081 This variable holds the test command to test for a symbolic link
4082 (if they are supported). Typical values include 'test -h' and
4085 ivdformat (perlxvf.U):
4086 This variable contains the format string used for printing
4087 a Perl IV as a signed decimal integer.
4090 This variable is the size of an IV in bytes.
4093 This variable contains the C type used for Perl's IV.
4095 known_extensions (Extensions.U):
4096 This variable holds a list of all extensions (both XS and non-xs)
4097 included in the package source distribution. This information is
4098 only really of use during the Perl build, as the list makes no
4099 distinction between extensions which were build and installed, and
4100 those which where not. See "extensions" for the list of extensions
4101 actually built and available.
4104 This variable is defined but not used by Configure.
4105 The value is the empty string and is not useful.
4108 This variable indicates the program to be used to link
4109 libraries for dynamic loading. On some systems, it is 'ld'.
4110 On ELF systems, it should be $cc. Mostly, we'll try to respect
4111 the hint file setting.
4113 ld_can_script (dlsrc.U):
4114 This variable shows if the loader accepts scripts in the form of
4115 -Wl,--version-script=ld.script. This is currently only supported
4116 for GNU ld on ELF in dynamic loading builds.
4118 lddlflags (dlsrc.U):
4119 This variable contains any special flags that might need to be
4120 passed to $ld to create a shared library suitable for dynamic
4121 loading. It is up to the makefile to use it. For hpux, it
4122 should be '-b'. For sunos 4.1, it is empty.
4124 ldflags (ccflags.U):
4125 This variable contains any additional C loader flags desired by
4126 the user. It is up to the Makefile to use this.
4128 ldflags_uselargefiles (uselfs.U):
4129 This variable contains the loader flags needed by large file builds
4130 and added to ldflags by hints files.
4132 ldlibpthname (libperl.U):
4133 This variable holds the name of the shared library
4134 search path, often LD_LIBRARY_PATH. To get an empty
4135 string, the hints file must set this to 'none'.
4138 This variable is used internally by Configure to determine the
4139 full pathname (if any) of the less program. After Configure runs,
4140 the value is reset to a plain "less" and is not useful.
4143 This is an old synonym for _a.
4146 This variable contains the location of the C library.
4148 libperl (libperl.U):
4149 The perl executable is obtained by linking perlmain.c with
4150 libperl, any static extensions (usually just DynaLoader),
4151 and any other libraries needed on this system. libperl
4152 is usually libperl.a, but can also be libperl.so.xxx if
4153 the user wishes to build a perl executable with a shared
4157 This variable holds the general path (space-separated) used to find
4158 libraries. It is intended to be used by other units.
4161 This variable holds the additional libraries we want to use.
4162 It is up to the Makefile to deal with it. The list can be empty.
4165 This variable holds the directory names aka dirnames of the libraries
4166 we found and accepted, duplicates are removed.
4169 This variable holds the filenames aka basenames of the libraries
4170 we found and accepted.
4173 This variable holds the full pathnames of the libraries
4174 we found and accepted.
4177 This variable holds the directory names probed for libraries.
4179 libswanted (Myinit.U):
4180 This variable holds a list of all the libraries we want to
4181 search. The order is chosen to pick up the c library
4182 ahead of ucb or bsd libraries for SVR4.
4184 libswanted_uselargefiles (uselfs.U):
4185 This variable contains the libraries needed by large file builds
4186 and added to ldflags by hints files. It is a space separated list
4187 of the library names without the "lib" prefix or any suffix, just
4191 This variable is defined but not used by Configure.
4192 The value is the empty string and is not useful.
4195 This variable is defined but not used by Configure.
4196 The value is the empty string and is not useful.
4198 lkflags (ccflags.U):
4199 This variable contains any additional C partial linker flags desired by
4200 the user. It is up to the Makefile to use this.
4203 This variable is used internally by Configure to determine the
4204 full pathname (if any) of the ln program. After Configure runs,
4205 the value is reset to a plain "ln" and is not useful.
4208 This variable holds the name of the command to make
4209 symbolic links (if they are supported). It can be used
4210 in the Makefile. It is either 'ln -s' or 'ln'
4212 localtime_r_proto (d_localtime_r.U):
4213 This variable encodes the prototype of localtime_r.
4214 It is zero if d_localtime_r is undef, and one of the
4215 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
4218 locincpth (ccflags.U):
4219 This variable contains a list of additional directories to be
4220 searched by the compiler. The appropriate '-I' directives will
4221 be added to ccflags. This is intended to simplify setting
4222 local directories from the Configure command line.
4223 It's not much, but it parallels the loclibpth stuff in libpth.U.
4225 loclibpth (libpth.U):
4226 This variable holds the paths (space-separated) used to find local
4227 libraries. It is prepended to libpth, and is intended to be easily
4228 set from the command line.
4230 longdblinfbytes (infnan.U):
4231 This variable contains comma-separated list of hexadecimal bytes
4232 for the long double precision infinity.
4234 longdblkind (d_longdbl.U):
4235 This variable, if defined, encodes the type of a long double:
4237 1 = IEEE 754 128-bit little endian,
4238 2 = IEEE 754 128-bit big endian,
4239 3 = x86 80-bit little endian,
4240 4 = x86 80-bit big endian,
4241 5 = double-double 128-bit little endian,
4242 6 = double-double 128-bit big endian,
4243 7 = 128-bit mixed-endian double-double (64-bit LEs in BE),
4244 8 = 128-bit mixed-endian double-double (64-bit BEs in LE),
4245 9 = 128-bit PDP-style mixed-endian long doubles,
4246 -1 = unknown format.
4248 longdblmantbits (mantbits.U):
4249 This symbol, if defined, tells how many mantissa bits
4250 there are in long double precision floating point format.
4251 Note that this can be LDBL_MANT_DIG minus one,
4252 since LDBL_MANT_DIG can include the IEEE 754 implicit bit.
4253 The common x86-style 80-bit long double does not have
4256 longdblnanbytes (infnan.U):
4257 This variable contains comma-separated list of hexadecimal bytes
4258 for the long double precision not-a-number.
4260 longdblsize (d_longdbl.U):
4261 This variable contains the value of the LONG_DOUBLESIZE symbol, which
4262 indicates to the C program how many bytes there are in a long double,
4263 if this system supports long doubles. Note that this is
4264 sizeof(long double), which may include unused bytes.
4266 longlongsize (d_longlong.U):
4267 This variable contains the value of the LONGLONGSIZE symbol, which
4268 indicates to the C program how many bytes there are in a long long,
4269 if this system supports long long.
4271 longsize (intsize.U):
4272 This variable contains the value of the LONGSIZE symbol, which
4273 indicates to the C program how many bytes there are in a long.
4276 This variable is defined but not used by Configure.
4277 The value is the empty string and is not useful.
4280 This variable is defined but not used by Configure.
4281 The value is the empty string and is not useful.
4284 This variable is used internally by Configure to determine the
4285 full pathname (if any) of the ls program. After Configure runs,
4286 the value is reset to a plain "ls" and is not useful.
4288 lseeksize (lseektype.U):
4289 This variable defines lseektype to be something like off_t, long,
4290 or whatever type is used to declare lseek offset's type in the
4291 kernel (which also appears to be lseek's return type).
4293 lseektype (lseektype.U):
4294 This variable defines lseektype to be something like off_t, long,
4295 or whatever type is used to declare lseek offset's type in the
4296 kernel (which also appears to be lseek's return type).
4299 This variable is defined but not used by Configure.
4300 The value is the empty string and is not useful.
4303 This variable is defined but not used by Configure.
4304 The value is the empty string and is not useful.
4307 This variable is used internally by Configure to determine the
4308 full pathname (if any) of the make program. After Configure runs,
4309 the value is reset to a plain "make" and is not useful.
4311 make_set_make (make.U):
4312 Some versions of 'make' set the variable MAKE. Others do not.
4313 This variable contains the string to be included in Makefile.SH
4314 so that MAKE is set if needed, and not if not needed.
4315 Possible values are:
4317 make_set_make='#' # If your make program handles this for you,
4319 make_set_make="MAKE=$make" # if it doesn't.
4321 This uses a comment character so that we can distinguish a
4322 'set' value (from a previous config.sh or Configure '-D' option)
4323 from an uncomputed value.
4325 mallocobj (mallocsrc.U):
4326 This variable contains the name of the malloc.o that this package
4327 generates, if that malloc.o is preferred over the system malloc.
4328 Otherwise the value is null. This variable is intended for generating
4329 Makefiles. See mallocsrc.
4331 mallocsrc (mallocsrc.U):
4332 This variable contains the name of the malloc.c that comes with
4333 the package, if that malloc.c is preferred over the system malloc.
4334 Otherwise the value is null. This variable is intended for generating
4337 malloctype (mallocsrc.U):
4338 This variable contains the kind of ptr returned by malloc and realloc.
4340 man1dir (man1dir.U):
4341 This variable contains the name of the directory in which manual
4342 source pages are to be put. It is the responsibility of the
4343 Makefile.SH to get the value of this into the proper command.
4344 You must be prepared to do the ~name expansion yourself.
4346 man1direxp (man1dir.U):
4347 This variable is the same as the man1dir variable, but is filename
4348 expanded at configuration time, for convenient use in makefiles.
4350 man1ext (man1dir.U):
4351 This variable contains the extension that the manual page should
4352 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
4355 man3dir (man3dir.U):
4356 This variable contains the name of the directory in which manual
4357 source pages are to be put. It is the responsibility of the
4358 Makefile.SH to get the value of this into the proper command.
4359 You must be prepared to do the ~name expansion yourself.
4361 man3direxp (man3dir.U):
4362 This variable is the same as the man3dir variable, but is filename
4363 expanded at configuration time, for convenient use in makefiles.
4365 man3ext (man3dir.U):
4366 This variable contains the extension that the manual page should
4367 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
4370 mips_type (usrinc.U):
4371 This variable holds the environment type for the mips system.
4372 Possible values are "BSD 4.3" and "System V".
4374 mistrustnm (Csym.U):
4375 This variable can be used to establish a fallthrough for the cases
4376 where nm fails to find a symbol. If usenm is false or usenm is true
4377 and mistrustnm is false, this variable has no effect. If usenm is true
4378 and mistrustnm is "compile", a test program will be compiled to try to
4379 find any symbol that can't be located via nm lookup. If mistrustnm is
4380 "run", the test program will be run as well as being compiled.
4383 This variable is used internally by Configure to determine the
4384 full pathname (if any) of the mkdir program. After Configure runs,
4385 the value is reset to a plain "mkdir" and is not useful.
4387 mmaptype (d_mmap.U):
4388 This symbol contains the type of pointer returned by mmap()
4389 (and simultaneously the type of the first argument).
4390 It can be 'void *' or 'caddr_t'.
4392 modetype (modetype.U):
4393 This variable defines modetype to be something like mode_t,
4394 int, unsigned short, or whatever type is used to declare file
4395 modes for system calls.
4398 This variable is used internally by Configure to determine the
4399 full pathname (if any) of the more program. After Configure runs,
4400 the value is reset to a plain "more" and is not useful.
4402 multiarch (multiarch.U):
4403 This variable conditionally defines the MULTIARCH symbol
4404 which signifies the presence of multiplatform files.
4405 This is normally set by hints files.
4408 This variable is defined but not used by Configure.
4409 The value is the empty string and is not useful.
4411 myarchname (archname.U):
4412 This variable holds the architecture name computed by Configure in
4413 a previous run. It is not intended to be perused by any user and
4414 should never be set in a hint file.
4416 mydomain (myhostname.U):
4417 This variable contains the eventual value of the MYDOMAIN symbol,
4418 which is the domain of the host the program is going to run on.
4419 The domain must be appended to myhostname to form a complete host name.
4420 The dot comes with mydomain, and need not be supplied by the program.
4422 myhostname (myhostname.U):
4423 This variable contains the eventual value of the MYHOSTNAME symbol,
4424 which is the name of the host the program is going to run on.
4425 The domain is not kept with hostname, but must be gotten from mydomain.
4426 The dot comes with mydomain, and need not be supplied by the program.
4428 myuname (Oldconfig.U):
4429 The output of 'uname -a' if available, otherwise the hostname.
4430 The whole thing is then lower-cased and slashes and single quotes are
4434 This variable contains the '-n' flag if that is what causes the echo
4435 command to suppress newline. Otherwise it is null. Correct usage is
4436 $echo $n "prompt for a question: $c".
4438 need_va_copy (need_va_copy.U):
4439 This symbol, if defined, indicates that the system stores
4440 the variable argument list datatype, va_list, in a format
4441 that cannot be copied by simple assignment, so that some
4442 other means must be used when copying is required.
4443 As such systems vary in their provision (or non-provision)
4444 of copying mechanisms, handy.h defines a platform-
4445 independent macro, Perl_va_copy(src, dst), to do the job.
4447 netdb_hlen_type (netdbtype.U):
4448 This variable holds the type used for the 2nd argument to
4449 gethostbyaddr(). Usually, this is int or size_t or unsigned.
4450 This is only useful if you have gethostbyaddr(), naturally.
4452 netdb_host_type (netdbtype.U):
4453 This variable holds the type used for the 1st argument to
4454 gethostbyaddr(). Usually, this is char * or void *, possibly
4455 with or without a const prefix.
4456 This is only useful if you have gethostbyaddr(), naturally.
4458 netdb_name_type (netdbtype.U):
4459 This variable holds the type used for the argument to
4460 gethostbyname(). Usually, this is char * or const char *.
4461 This is only useful if you have gethostbyname(), naturally.
4463 netdb_net_type (netdbtype.U):
4464 This variable holds the type used for the 1st argument to
4465 getnetbyaddr(). Usually, this is int or long.
4466 This is only useful if you have getnetbyaddr(), naturally.
4469 This variable is used internally by Configure to determine the
4470 full pathname (if any) of the nm program. After Configure runs,
4471 the value is reset to a plain "nm" and is not useful.
4474 This variable holds the options that may be necessary for nm.
4476 nm_so_opt (usenm.U):
4477 This variable holds the options that may be necessary for nm
4478 to work on a shared library but that can not be used on an
4479 archive library. Currently, this is only used by Linux, where
4480 nm --dynamic is *required* to get symbols from an ELF library which
4481 has been stripped, but nm --dynamic is *fatal* on an archive library.
4482 Maybe Linux should just always set usenm=false.
4484 nonxs_ext (Extensions.U):
4485 This variable holds a list of all non-xs extensions built and
4486 installed by the package. By default, all non-xs extensions
4487 distributed will be built, with the exception of platform-specific
4488 extensions (currently only one VMS specific extension).
4491 This variable is used internally by Configure to determine the
4492 full pathname (if any) of the nroff program. After Configure runs,
4493 the value is reset to a plain "nroff" and is not useful.
4495 nv_overflows_integers_at (perlxv.U):
4496 This variable gives the largest integer value that NVs can hold
4497 as a constant floating point expression.
4498 If it could not be determined, it holds the value 0.
4500 nv_preserves_uv_bits (perlxv.U):
4501 This variable indicates how many of bits type uvtype
4502 a variable nvtype can preserve.
4504 nveformat (perlxvf.U):
4505 This variable contains the format string used for printing
4506 a Perl NV using %e-ish floating point format.
4508 nvEUformat (perlxvf.U):
4509 This variable contains the format string used for printing
4510 a Perl NV using %E-ish floating point format.
4512 nvfformat (perlxvf.U):
4513 This variable contains the format string used for printing
4514 a Perl NV using %f-ish floating point format.
4516 nvFUformat (perlxvf.U):
4517 This variable contains the format string used for printing
4518 a Perl NV using %F-ish floating point format.
4520 nvgformat (perlxvf.U):
4521 This variable contains the format string used for printing
4522 a Perl NV using %g-ish floating point format.
4524 nvGUformat (perlxvf.U):
4525 This variable contains the format string used for printing
4526 a Perl NV using %G-ish floating point format.
4528 nvmantbits (mantbits.U):
4529 This variable tells how many bits the mantissa of a Perl NV has,
4530 not including the possible implicit bit.
4533 This variable is the size of a Perl NV in bytes.
4534 Note that some floating point formats have unused bytes.
4537 This variable contains the C type used for Perl's NV.
4539 o_nonblock (nblock_io.U):
4540 This variable bears the symbol value to be used during open() or fcntl()
4541 to turn on non-blocking I/O for a file descriptor. If you wish to switch
4542 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
4543 but that is only supported by some devices.
4546 This is an old synonym for _o.
4548 old_pthread_create_joinable (d_pthrattrj.U):
4549 This variable defines the constant to use for creating joinable
4550 (aka undetached) pthreads. Unused if pthread.h defines
4551 PTHREAD_CREATE_JOINABLE. If used, possible values are
4552 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
4554 optimize (ccflags.U):
4555 This variable contains any optimizer/debugger flag that should be used.
4556 It is up to the Makefile to use it.
4558 orderlib (orderlib.U):
4559 This variable is "true" if the components of libraries must be ordered
4560 (with `lorder $* | tsort`) before placing them in an archive. Set to
4561 "false" if ranlib or ar can generate random libraries.
4563 osname (Oldconfig.U):
4564 This variable contains the operating system name (e.g. sunos,
4565 solaris, hpux, etc.). It can be useful later on for setting
4566 defaults. Any spaces are replaced with underscores. It is set
4567 to a null string if we can't figure it out.
4569 osvers (Oldconfig.U):
4570 This variable contains the operating system version (e.g.
4571 4.1.3, 5.2, etc.). It is primarily used for helping select
4572 an appropriate hints file, but might be useful elsewhere for
4573 setting defaults. It is set to '' if we can't figure it out.
4574 We try to be flexible about how much of the version number
4575 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
4576 same for this package, hints files might just be os_4.0 or
4577 os_4.1, etc., not keeping separate files for each little release.
4579 otherlibdirs (otherlibdirs.U):
4580 This variable contains a colon-separated set of paths for the perl
4581 binary to search for additional library files or modules.
4582 These directories will be tacked to the end of @INC.
4583 Perl will automatically search below each path for version-
4584 and architecture-specific directories. See inc_version_list
4586 A value of ' ' means 'none' and is used to preserve this value
4587 for the next run through Configure.
4589 package (package.U):
4590 This variable contains the name of the package being constructed.
4591 It is primarily intended for the use of later Configure units.
4594 This variable contains the name of the preferred pager on the system.
4595 Usual values are (the full pathnames of) more, less, pg, or cat.
4598 This variable contains a command that produces the text of the
4599 /etc/passwd file. This is normally "cat /etc/passwd", but can be
4600 "ypcat passwd" when NIS is used.
4601 On some systems, such as os390, there may be no equivalent
4602 command, in which case this variable is unset.
4604 patchlevel (patchlevel.U):
4605 The patchlevel level of this package.
4606 The value of patchlevel comes from the patchlevel.h file.
4607 In a version number such as 5.6.1, this is the "6".
4608 In patchlevel.h, this is referred to as "PERL_VERSION".
4611 This is an old synonym for p_ in Head.U, the character
4612 used to separate elements in the command shell search PATH.
4615 This variable is used internally by Configure to determine the
4616 full pathname (if any) of the perl program. After Configure runs,
4617 the value is reset to a plain "perl" and is not useful.
4620 This variable contains the full path (if any) to a previously
4621 installed perl5.005 or later suitable for running the script
4622 to determine inc_version_list.
4624 PERL_API_REVISION (patchlevel.h):
4625 This number describes the earliest compatible PERL_REVISION of
4626 Perl ("compatibility" here being defined as sufficient binary/API
4627 compatibility to run XS code built with the older version).
4628 Normally this does not change across maintenance releases.
4629 Please read the comment in patchlevel.h.
4631 PERL_API_SUBVERSION (patchlevel.h):
4632 This number describes the earliest compatible PERL_SUBVERSION of
4633 Perl ("compatibility" here being defined as sufficient binary/API
4634 compatibility to run XS code built with the older version).
4635 Normally this does not change across maintenance releases.
4636 Please read the comment in patchlevel.h.
4638 PERL_API_VERSION (patchlevel.h):
4639 This number describes the earliest compatible PERL_VERSION of
4640 Perl ("compatibility" here being defined as sufficient binary/API
4641 compatibility to run XS code built with the older version).
4642 Normally this does not change across maintenance releases.
4643 Please read the comment in patchlevel.h.
4645 PERL_CONFIG_SH (Oldsyms.U):
4646 This is set to 'true' in config.sh so that a shell script
4647 sourcing config.sh can tell if it has been sourced already.
4649 PERL_PATCHLEVEL (Oldsyms.U):
4650 This symbol reflects the patchlevel, if available. Will usually
4651 come from the .patch file, which is available when the perl
4652 source tree was fetched with rsync.
4654 perl_patchlevel (patchlevel.U):
4655 This is the Perl patch level, a numeric change identifier,
4656 as defined by whichever source code maintenance system
4657 is used to maintain the patches; currently Perforce.
4658 It does not correlate with the Perl version numbers or
4659 the maintenance versus development dichotomy except
4660 by also being increasing.
4662 PERL_REVISION (Oldsyms.U):
4663 In a Perl version number such as 5.6.2, this is the 5.
4664 This value is manually set in patchlevel.h
4666 perl_static_inline (d_static_inline.U):
4667 This variable defines the PERL_STATIC_INLINE symbol to
4668 the best-guess incantation to use for static inline functions.
4669 Possibilities include
4671 static __inline__ (gcc -ansi)
4672 static __inline (MSVC)
4673 static _inline (older MSVC)
4674 static (c89 compilers)
4676 PERL_SUBVERSION (Oldsyms.U):
4677 In a Perl version number such as 5.6.2, this is the 2.
4678 Values greater than 50 represent potentially unstable
4679 development subversions.
4680 This value is manually set in patchlevel.h
4682 PERL_VERSION (Oldsyms.U):
4683 In a Perl version number such as 5.6.2, this is the 6.
4684 This value is manually set in patchlevel.h
4686 perladmin (perladmin.U):
4687 Electronic mail address of the perl5 administrator.
4690 The list of libraries needed by Perl only (any libraries needed
4691 by extensions only will by dropped, if using dynamic loading).
4693 perlpath (perlpath.U):
4694 This variable contains the eventual value of the PERLPATH symbol,
4695 which contains the name of the perl interpreter to be used in
4696 shell scripts and in the "eval 'exec'" idiom. This variable is
4697 not necessarily the pathname of the file containing the perl
4698 interpreter; you must append the executable extension (_exe) if
4699 it is not already present. Note that Perl code that runs during
4700 the Perl build process cannot reference this variable, as Perl
4701 may not have been installed, or even if installed, may be a
4702 different version of Perl.
4705 This variable is used internally by Configure to determine the
4706 full pathname (if any) of the pg program. After Configure runs,
4707 the value is reset to a plain "pg" and is not useful.
4709 phostname (myhostname.U):
4710 This variable contains the eventual value of the PHOSTNAME symbol,
4711 which is a command that can be fed to popen() to get the host name.
4712 The program should probably not presume that the domain is or isn't
4715 pidtype (pidtype.U):
4716 This variable defines PIDTYPE to be something like pid_t, int,
4717 ushort, or whatever type is used to declare process ids in the kernel.
4720 Holds the private path used by Configure to find out the libraries.
4721 Its value is prepend to libpth. This variable takes care of special
4722 machines, like the mips. Usually, it should be empty.
4725 This variable is defined but not used by Configure.
4726 The value is the empty string and is not useful.
4729 This variable is defined but not used by Configure.
4730 The value is the empty string and is not useful.
4733 This variable holds the name of the directory below which the
4734 user will install the package. Usually, this is /usr/local, and
4735 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4736 man pages in /usr/local/man, etc. It is only used to set defaults
4737 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4739 prefixexp (prefix.U):
4740 This variable holds the full absolute path of the directory below
4741 which the user will install the package. Derived from prefix.
4743 privlib (privlib.U):
4744 This variable contains the eventual value of the PRIVLIB symbol,
4745 which is the name of the private library for this package. It may
4746 have a ~ on the front. It is up to the makefile to eventually create
4747 this directory while performing installation (with ~ substitution).
4749 privlibexp (privlib.U):
4750 This variable is the ~name expanded version of privlib, so that you
4751 may use it directly in Makefiles or shell scripts.
4753 procselfexe (d_procselfexe.U):
4754 If d_procselfexe is defined, $procselfexe is the filename
4755 of the symbolic link pointing to the absolute pathname of
4756 the executing program.
4758 ptrsize (ptrsize.U):
4759 This variable contains the value of the PTRSIZE symbol, which
4760 indicates to the C program how many bytes there are in a pointer.
4762 quadkind (quadtype.U):
4763 This variable, if defined, encodes the type of a quad:
4764 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4766 quadtype (quadtype.U):
4767 This variable defines Quad_t to be something like long, int,
4768 long long, int64_t, or whatever type is used for 64-bit integers.
4770 randbits (randfunc.U):
4771 Indicates how many bits are produced by the function used to
4772 generate normalized random numbers.
4774 randfunc (randfunc.U):
4775 Indicates the name of the random number function to use.
4776 Values include drand48, random, and rand. In C programs,
4777 the 'Drand01' macro is defined to generate uniformly distributed
4778 random numbers over the range [0., 1.[ (see drand01 and nrand).
4780 random_r_proto (d_random_r.U):
4781 This variable encodes the prototype of random_r.
4782 It is zero if d_random_r is undef, and one of the
4783 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4786 randseedtype (randfunc.U):
4787 Indicates the type of the argument of the seedfunc.
4789 ranlib (orderlib.U):
4790 This variable is set to the pathname of the ranlib program, if it is
4791 needed to generate random libraries. Set to ":" if ar can generate
4792 random libraries or if random libraries are not supported
4794 rd_nodata (nblock_io.U):
4795 This variable holds the return code from read() when no data is
4796 present. It should be -1, but some systems return 0 when O_NDELAY is
4797 used, which is a shame because you cannot make the difference between
4798 no data and an EOF.. Sigh!
4800 readdir64_r_proto (d_readdir64_r.U):
4801 This variable encodes the prototype of readdir64_r.
4802 It is zero if d_readdir64_r is undef, and one of the
4803 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4806 readdir_r_proto (d_readdir_r.U):
4807 This variable encodes the prototype of readdir_r.
4808 It is zero if d_readdir_r is undef, and one of the
4809 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4812 revision (patchlevel.U):
4813 The value of revision comes from the patchlevel.h file.
4814 In a version number such as 5.6.1, this is the "5".
4815 In patchlevel.h, this is referred to as "PERL_REVISION".
4818 This variable is used internally by Configure to determine the
4819 full pathname (if any) of the rm program. After Configure runs,
4820 the value is reset to a plain "rm" and is not useful.
4823 This is a cleanup variable for try test programs.
4824 Internal Configure use only.
4827 This variable is defined but not used by Configure.
4828 The value is the empty string and is not useful.
4831 This variable contains the command used by Configure
4832 to copy and execute a cross-compiled executable in the
4833 target host. Useful and available only during Perl build.
4834 Empty string '' if not cross-compiling.
4837 This variable contains 'true' or 'false' depending whether the
4838 nm extraction should be performed or not, according to the value
4839 of usenm and the flags on the Configure command line.
4841 sched_yield (d_pthread_y.U):
4842 This variable defines the way to yield the execution
4843 of the current thread.
4845 scriptdir (scriptdir.U):
4846 This variable holds the name of the directory in which the user wants
4847 to put publicly scripts for the package in question. It is either
4848 the same directory as for binaries, or a special one that can be
4849 mounted across different architectures, like /usr/share. Programs
4850 must be prepared to deal with ~name expansion.
4852 scriptdirexp (scriptdir.U):
4853 This variable is the same as scriptdir, but is filename expanded
4854 at configuration time, for programs not wanting to bother with it.
4857 This variable is used internally by Configure to determine the
4858 full pathname (if any) of the sed program. After Configure runs,
4859 the value is reset to a plain "sed" and is not useful.
4861 seedfunc (randfunc.U):
4862 Indicates the random number generating seed function.
4863 Values include srand48, srandom, and srand.
4865 selectminbits (selectminbits.U):
4866 This variable holds the minimum number of bits operated by select.
4867 That is, if you do select(n, ...), how many bits at least will be
4868 cleared in the masks if some activity is detected. Usually this
4869 is either n or 32*ceil(n/32), especially many little-endians do
4870 the latter. This is only useful if you have select(), naturally.
4872 selecttype (selecttype.U):
4873 This variable holds the type used for the 2nd, 3rd, and 4th
4874 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4875 is defined, and 'int *' otherwise. This is only useful if you
4876 have select(), naturally.
4879 This variable is defined but not used by Configure.
4880 The value is the empty string and is not useful.
4882 setgrent_r_proto (d_setgrent_r.U):
4883 This variable encodes the prototype of setgrent_r.
4884 It is zero if d_setgrent_r is undef, and one of the
4885 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4888 sethostent_r_proto (d_sethostent_r.U):
4889 This variable encodes the prototype of sethostent_r.
4890 It is zero if d_sethostent_r is undef, and one of the
4891 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4894 setlocale_r_proto (d_setlocale_r.U):
4895 This variable encodes the prototype of setlocale_r.
4896 It is zero if d_setlocale_r is undef, and one of the
4897 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4900 setnetent_r_proto (d_setnetent_r.U):
4901 This variable encodes the prototype of setnetent_r.
4902 It is zero if d_setnetent_r is undef, and one of the
4903 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4906 setprotoent_r_proto (d_setprotoent_r.U):
4907 This variable encodes the prototype of setprotoent_r.
4908 It is zero if d_setprotoent_r is undef, and one of the
4909 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4912 setpwent_r_proto (d_setpwent_r.U):
4913 This variable encodes the prototype of setpwent_r.
4914 It is zero if d_setpwent_r is undef, and one of the
4915 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4918 setservent_r_proto (d_setservent_r.U):
4919 This variable encodes the prototype of setservent_r.
4920 It is zero if d_setservent_r is undef, and one of the
4921 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4924 sGMTIME_max (time_size.U):
4925 This variable defines the maximum value of the time_t offset that
4926 the system function gmtime () accepts
4928 sGMTIME_min (time_size.U):
4929 This variable defines the minimum value of the time_t offset that
4930 the system function gmtime () accepts
4933 This variable contains the full pathname of the shell used
4934 on this system to execute Bourne shell scripts. Usually, this will be
4935 /bin/sh, though it's possible that some systems will have /bin/ksh,
4936 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4938 This unit comes before Options.U, so you can't set sh with a '-D'
4939 option, though you can override this (and startsh)
4940 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4943 This variable is defined but not used by Configure.
4944 The value is the empty string and is not useful.
4946 sharpbang (spitshell.U):
4947 This variable contains the string #! if this system supports that
4950 shmattype (d_shmat.U):
4951 This symbol contains the type of pointer returned by shmat().
4952 It can be 'void *' or 'char *'.
4954 shortsize (intsize.U):
4955 This variable contains the value of the SHORTSIZE symbol which
4956 indicates to the C program how many bytes there are in a short.
4958 shrpenv (libperl.U):
4959 If the user builds a shared libperl.so, then we need to tell the
4960 'perl' executable where it will be able to find the installed libperl.so.
4961 One way to do this on some systems is to set the environment variable
4962 LD_RUN_PATH to the directory that will be the final location of the
4963 shared libperl.so. The makefile can use this with something like
4964 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4966 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4969 See the main perl Makefile.SH for actual working usage.
4971 Alternatively, we might be able to use a command line option such
4972 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4973 $archlibexp/CORE (Linux).
4975 shsharp (spitshell.U):
4976 This variable tells further Configure units whether your sh can
4979 sig_count (sig_name.U):
4980 This variable holds a number larger than the largest valid
4981 signal number. This is usually the same as the NSIG macro.
4983 sig_name (sig_name.U):
4984 This variable holds the signal names, space separated. The leading
4985 SIG in signal name is removed. A ZERO is prepended to the list.
4986 This is currently not used, sig_name_init is used instead.
4988 sig_name_init (sig_name.U):
4989 This variable holds the signal names, enclosed in double quotes and
4990 separated by commas, suitable for use in the SIG_NAME definition
4991 below. A "ZERO" is prepended to the list, and the list is
4992 terminated with a plain 0. The leading SIG in signal names
4993 is removed. See sig_num.
4995 sig_num (sig_name.U):
4996 This variable holds the signal numbers, space separated. A ZERO is
4997 prepended to the list (corresponding to the fake SIGZERO).
4998 Those numbers correspond to the value of the signal listed
4999 in the same place within the sig_name list.
5000 This is currently not used, sig_num_init is used instead.
5002 sig_num_init (sig_name.U):
5003 This variable holds the signal numbers, enclosed in double quotes and
5004 separated by commas, suitable for use in the SIG_NUM definition
5005 below. A "ZERO" is prepended to the list, and the list is
5006 terminated with a plain 0.
5008 sig_size (sig_name.U):
5009 This variable contains the number of elements of the sig_name
5012 signal_t (d_voidsig.U):
5013 This variable holds the type of the signal handler (void or int).
5015 sitearch (sitearch.U):
5016 This variable contains the eventual value of the SITEARCH symbol,
5017 which is the name of the private library for this package. It may
5018 have a ~ on the front. It is up to the makefile to eventually create
5019 this directory while performing installation (with ~ substitution).
5020 The standard distribution will put nothing in this directory.
5021 After perl has been installed, users may install their own local
5022 architecture-dependent modules in this directory with
5023 MakeMaker Makefile.PL
5024 or equivalent. See INSTALL for details.
5026 sitearchexp (sitearch.U):
5027 This variable is the ~name expanded version of sitearch, so that you
5028 may use it directly in Makefiles or shell scripts.
5030 sitebin (sitebin.U):
5031 This variable holds the name of the directory in which the user wants
5032 to put add-on publicly executable files for the package in question. It
5033 is most often a local directory such as /usr/local/bin. Programs using
5034 this variable must be prepared to deal with ~name substitution.
5035 The standard distribution will put nothing in this directory.
5036 After perl has been installed, users may install their own local
5037 executables in this directory with
5038 MakeMaker Makefile.PL
5039 or equivalent. See INSTALL for details.
5041 sitebinexp (sitebin.U):
5042 This is the same as the sitebin variable, but is filename expanded at
5043 configuration time, for use in your makefiles.
5045 sitehtml1dir (sitehtml1dir.U):
5046 This variable contains the name of the directory in which site-specific
5047 html source pages are to be put. It is the responsibility of the
5048 Makefile.SH to get the value of this into the proper command.
5049 You must be prepared to do the ~name expansion yourself.
5050 The standard distribution will put nothing in this directory.
5051 After perl has been installed, users may install their own local
5052 html pages in this directory with
5053 MakeMaker Makefile.PL
5054 or equivalent. See INSTALL for details.
5056 sitehtml1direxp (sitehtml1dir.U):
5057 This variable is the same as the sitehtml1dir variable, but is filename
5058 expanded at configuration time, for convenient use in makefiles.
5060 sitehtml3dir (sitehtml3dir.U):
5061 This variable contains the name of the directory in which site-specific
5062 library html source pages are to be put. It is the responsibility of the
5063 Makefile.SH to get the value of this into the proper command.
5064 You must be prepared to do the ~name expansion yourself.
5065 The standard distribution will put nothing in this directory.
5066 After perl has been installed, users may install their own local
5067 library html pages in this directory with
5068 MakeMaker Makefile.PL
5069 or equivalent. See INSTALL for details.
5071 sitehtml3direxp (sitehtml3dir.U):
5072 This variable is the same as the sitehtml3dir variable, but is filename
5073 expanded at configuration time, for convenient use in makefiles.
5075 sitelib (sitelib.U):
5076 This variable contains the eventual value of the SITELIB symbol,
5077 which is the name of the private library for this package. It may
5078 have a ~ on the front. It is up to the makefile to eventually create
5079 this directory while performing installation (with ~ substitution).
5080 The standard distribution will put nothing in this directory.
5081 After perl has been installed, users may install their own local
5082 architecture-independent modules in this directory with
5083 MakeMaker Makefile.PL
5084 or equivalent. See INSTALL for details.
5086 sitelib_stem (sitelib.U):
5087 This variable is $sitelibexp with any trailing version-specific component
5088 removed. The elements in inc_version_list (inc_version_list.U) can
5089 be tacked onto this variable to generate a list of directories to search.
5091 sitelibexp (sitelib.U):
5092 This variable is the ~name expanded version of sitelib, so that you
5093 may use it directly in Makefiles or shell scripts.
5095 siteman1dir (siteman1dir.U):
5096 This variable contains the name of the directory in which site-specific
5097 manual source pages are to be put. It is the responsibility of the
5098 Makefile.SH to get the value of this into the proper command.
5099 You must be prepared to do the ~name expansion yourself.
5100 The standard distribution will put nothing in this directory.
5101 After perl has been installed, users may install their own local
5102 man1 pages in this directory with
5103 MakeMaker Makefile.PL
5104 or equivalent. See INSTALL for details.
5106 siteman1direxp (siteman1dir.U):
5107 This variable is the same as the siteman1dir variable, but is filename
5108 expanded at configuration time, for convenient use in makefiles.
5110 siteman3dir (siteman3dir.U):
5111 This variable contains the name of the directory in which site-specific
5112 library man source pages are to be put. It is the responsibility of the
5113 Makefile.SH to get the value of this into the proper command.
5114 You must be prepared to do the ~name expansion yourself.
5115 The standard distribution will put nothing in this directory.
5116 After perl has been installed, users may install their own local
5117 man3 pages in this directory with
5118 MakeMaker Makefile.PL
5119 or equivalent. See INSTALL for details.
5121 siteman3direxp (siteman3dir.U):
5122 This variable is the same as the siteman3dir variable, but is filename
5123 expanded at configuration time, for convenient use in makefiles.
5125 siteprefix (siteprefix.U):
5126 This variable holds the full absolute path of the directory below
5127 which the user will install add-on packages.
5128 See INSTALL for usage and examples.
5130 siteprefixexp (siteprefix.U):
5131 This variable holds the full absolute path of the directory below
5132 which the user will install add-on packages. Derived from siteprefix.
5134 sitescript (sitescript.U):
5135 This variable holds the name of the directory in which the user wants
5136 to put add-on publicly executable files for the package in question. It
5137 is most often a local directory such as /usr/local/bin. Programs using
5138 this variable must be prepared to deal with ~name substitution.
5139 The standard distribution will put nothing in this directory.
5140 After perl has been installed, users may install their own local
5141 scripts in this directory with
5142 MakeMaker Makefile.PL
5143 or equivalent. See INSTALL for details.
5145 sitescriptexp (sitescript.U):
5146 This is the same as the sitescript variable, but is filename expanded at
5147 configuration time, for use in your makefiles.
5149 sizesize (sizesize.U):
5150 This variable contains the size of a sizetype in bytes.
5152 sizetype (sizetype.U):
5153 This variable defines sizetype to be something like size_t,
5154 unsigned long, or whatever type is used to declare length
5155 parameters for string functions.
5158 This variable is defined but not used by Configure.
5159 The value is the empty string and is not useful.
5161 sLOCALTIME_max (time_size.U):
5162 This variable defines the maximum value of the time_t offset that
5163 the system function localtime () accepts
5165 sLOCALTIME_min (time_size.U):
5166 This variable defines the minimum value of the time_t offset that
5167 the system function localtime () accepts
5170 This variable is defined but not used by Configure.
5171 The value is the empty string and is not useful.
5174 This variable holds the extension used to identify shared libraries
5175 (also known as shared objects) on the system. Usually set to 'so'.
5177 sockethdr (d_socket.U):
5178 This variable has any cpp '-I' flags needed for socket support.
5180 socketlib (d_socket.U):
5181 This variable has the names of any libraries needed for socket support.
5183 socksizetype (socksizetype.U):
5184 This variable holds the type used for the size argument
5185 for various socket calls like accept. Usual values include
5186 socklen_t, size_t, and int.
5189 This variable is used internally by Configure to determine the
5190 full pathname (if any) of the sort program. After Configure runs,
5191 the value is reset to a plain "sort" and is not useful.
5193 spackage (package.U):
5194 This variable contains the name of the package being constructed,
5195 with the first letter uppercased, i.e. suitable for starting
5198 spitshell (spitshell.U):
5199 This variable contains the command necessary to spit out a runnable
5200 shell on this system. It is either cat or a grep '-v' for # comments.
5202 sPRId64 (quadfio.U):
5203 This variable, if defined, contains the string used by stdio to
5204 format 64-bit decimal numbers (format 'd') for output.
5206 sPRIeldbl (longdblfio.U):
5207 This variable, if defined, contains the string used by stdio to
5208 format long doubles (format 'e') for output.
5210 sPRIEUldbl (longdblfio.U):
5211 This variable, if defined, contains the string used by stdio to
5212 format long doubles (format 'E') for output.
5213 The 'U' in the name is to separate this from sPRIeldbl so that even
5214 case-blind systems can see the difference.
5216 sPRIfldbl (longdblfio.U):
5217 This variable, if defined, contains the string used by stdio to
5218 format long doubles (format 'f') for output.
5220 sPRIFUldbl (longdblfio.U):
5221 This variable, if defined, contains the string used by stdio to
5222 format long doubles (format 'F') for output.
5223 The 'U' in the name is to separate this from sPRIfldbl so that even
5224 case-blind systems can see the difference.
5226 sPRIgldbl (longdblfio.U):
5227 This variable, if defined, contains the string used by stdio to
5228 format long doubles (format 'g') for output.
5230 sPRIGUldbl (longdblfio.U):
5231 This variable, if defined, contains the string used by stdio to
5232 format long doubles (format 'G') for output.
5233 The 'U' in the name is to separate this from sPRIgldbl so that even
5234 case-blind systems can see the difference.
5236 sPRIi64 (quadfio.U):
5237 This variable, if defined, contains the string used by stdio to
5238 format 64-bit decimal numbers (format 'i') for output.
5240 sPRIo64 (quadfio.U):
5241 This variable, if defined, contains the string used by stdio to
5242 format 64-bit octal numbers (format 'o') for output.
5244 sPRIu64 (quadfio.U):
5245 This variable, if defined, contains the string used by stdio to
5246 format 64-bit unsigned decimal numbers (format 'u') for output.
5248 sPRIx64 (quadfio.U):
5249 This variable, if defined, contains the string used by stdio to
5250 format 64-bit hexadecimal numbers (format 'x') for output.
5252 sPRIXU64 (quadfio.U):
5253 This variable, if defined, contains the string used by stdio to
5254 format 64-bit hExADECimAl numbers (format 'X') for output.
5255 The 'U' in the name is to separate this from sPRIx64 so that even
5256 case-blind systems can see the difference.
5258 srand48_r_proto (d_srand48_r.U):
5259 This variable encodes the prototype of srand48_r.
5260 It is zero if d_srand48_r is undef, and one of the
5261 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
5264 srandom_r_proto (d_srandom_r.U):
5265 This variable encodes the prototype of srandom_r.
5266 It is zero if d_srandom_r is undef, and one of the
5267 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
5271 This variable holds the (possibly relative) path of the package source.
5272 It is up to the Makefile to use this variable and set VPATH accordingly
5273 to find the sources remotely. Use $pkgsrc to have an absolute path.
5275 sSCNfldbl (longdblfio.U):
5276 This variable, if defined, contains the string used by stdio to
5277 format long doubles (format 'f') for input.
5279 ssizetype (ssizetype.U):
5280 This variable defines ssizetype to be something like ssize_t,
5281 long or int. It is used by functions that return a count
5282 of bytes or an error condition. It must be a signed type.
5283 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
5285 st_ino_sign (st_ino_def.U):
5286 This variable contains the signedness of struct stat's st_ino.
5287 1 for unsigned, -1 for signed.
5289 st_ino_size (st_ino_def.U):
5290 This variable contains the size of struct stat's st_ino in bytes.
5292 startperl (startperl.U):
5293 This variable contains the string to put on the front of a perl
5294 script to make sure (hopefully) that it runs with perl and not some
5295 shell. Of course, that leading line must be followed by the classical
5297 eval 'exec perl -S $0 ${1+"$@"}'
5298 if $running_under_some_shell;
5299 to guarantee perl startup should the shell execute the script. Note
5300 that this magic incantation is not understood by csh.
5302 startsh (startsh.U):
5303 This variable contains the string to put on the front of a shell
5304 script to make sure (hopefully) that it runs with sh and not some
5307 static_ext (Extensions.U):
5308 This variable holds a list of XS extension files we want to
5309 link statically into the package. It is used by Makefile.
5311 stdchar (stdchar.U):
5312 This variable conditionally defines STDCHAR to be the type of char
5313 used in stdio.h. It has the values "unsigned char" or "char".
5315 stdio_base (d_stdstdio.U):
5316 This variable defines how, given a FILE pointer, fp, to access the
5317 _base field (or equivalent) of stdio.h's FILE structure. This will
5318 be used to define the macro FILE_base(fp).
5320 stdio_bufsiz (d_stdstdio.U):
5321 This variable defines how, given a FILE pointer, fp, to determine
5322 the number of bytes store in the I/O buffer pointer to by the
5323 _base field (or equivalent) of stdio.h's FILE structure. This will
5324 be used to define the macro FILE_bufsiz(fp).
5326 stdio_cnt (d_stdstdio.U):
5327 This variable defines how, given a FILE pointer, fp, to access the
5328 _cnt field (or equivalent) of stdio.h's FILE structure. This will
5329 be used to define the macro FILE_cnt(fp).
5331 stdio_filbuf (d_stdstdio.U):
5332 This variable defines how, given a FILE pointer, fp, to tell
5333 stdio to refill its internal buffers (?). This will
5334 be used to define the macro FILE_filbuf(fp).
5336 stdio_ptr (d_stdstdio.U):
5337 This variable defines how, given a FILE pointer, fp, to access the
5338 _ptr field (or equivalent) of stdio.h's FILE structure. This will
5339 be used to define the macro FILE_ptr(fp).
5341 stdio_stream_array (stdio_streams.U):
5342 This variable tells the name of the array holding the stdio streams.
5343 Usual values include _iob, __iob, and __sF.
5345 strerror_r_proto (d_strerror_r.U):
5346 This variable encodes the prototype of strerror_r.
5347 It is zero if d_strerror_r is undef, and one of the
5348 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
5352 This variable is defined but not used by Configure.
5353 The value is the empty string and is not useful.
5355 subversion (patchlevel.U):
5356 The subversion level of this package.
5357 The value of subversion comes from the patchlevel.h file.
5358 In a version number such as 5.6.1, this is the "1".
5359 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
5360 This is unique to perl.
5363 This variable holds the place where the manual is located on this
5364 system. It is not the place where the user wants to put his manual
5365 pages. Rather it is the place where Configure may look to find manual
5366 for unix commands (section 1 of the manual usually). See mansrc.
5368 sysroot (Sysroot.U):
5369 This variable is empty unless supplied by the Configure user.
5370 It can contain a path to an alternative root directory, under which
5371 headers and libraries for the compilation target can be found. This
5372 is generally used when cross-compiling using a gcc-like compiler.
5375 This variable is defined but not used by Configure.
5376 The value is the empty string and is not useful.
5379 This variable is defined but not used by Configure.
5380 The value is the empty string and is not useful.
5382 targetarch (Cross.U):
5383 If cross-compiling, this variable contains the target architecture.
5384 If not, this will be empty.
5386 targetdir (Cross.U):
5387 This variable contains a path that will be created on the target
5388 host using targetmkdir, and then used to copy the cross-compiled
5389 executables to. Defaults to '/tmp' if not set.
5391 targetenv (Cross.U):
5392 If cross-compiling, this variable can be used to modify the
5393 environment on the target system.
5394 However, how and where it's used, and even if it's used at all, is
5395 entirely dependent on both the transport mechanism (targetrun) and
5396 what the target system is. Unless the relevant documentation says
5397 otherwise, it is genereally not useful.
5399 targethost (Cross.U):
5400 This variable contains the name of a separate host machine that
5401 can be used to run compiled test programs and perl tests on.
5402 Set to empty string if not in use.
5404 targetmkdir (Cross.U):
5405 This variable contains the command used by Configure to create a
5406 new directory on the target host.
5408 targetport (Cross.U):
5409 This variable contains the number of a network port to be used to
5410 connect to the host in targethost, if unset defaults to 22 for ssh.
5413 If cross-compiling, this variable contains the location of sh on the
5415 If not, this will be the same as $sh.
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.
5426 This variable is used internally by Configure to determine the
5427 full pathname (if any) of the test program. After Configure runs,
5428 the value is reset to a plain "test" and is not useful.
5430 timeincl (i_time.U):
5431 This variable holds the full path of the included time header(s).
5433 timetype (d_time.U):
5434 This variable holds the type returned by time(). It can be long,
5435 or time_t on BSD sites (in which case <sys/types.h> should be
5436 included). Anyway, the type Time_t should be used.
5438 tmpnam_r_proto (d_tmpnam_r.U):
5439 This variable encodes the prototype of tmpnam_r.
5440 It is zero if d_tmpnam_r is undef, and one of the
5441 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
5445 This variable contains the command used by Configure
5446 to copy to from the target host. Useful and available
5447 only during Perl build.
5448 The string ':' if not cross-compiling.
5451 This variable is used internally by Configure to determine the
5452 full pathname (if any) of the touch program. After Configure runs,
5453 the value is reset to a plain "touch" and is not useful.
5456 This variable is used internally by Configure to determine the
5457 full pathname (if any) of the tr program. After Configure runs,
5458 the value is reset to a plain "tr" and is not useful.
5461 This variable contains the value to be passed to the tr(1)
5462 command to transliterate a newline. Typical values are
5463 '\012' and '\n'. This is needed for EBCDIC systems where
5464 newline is not necessarily '\012'.
5467 This variable is defined but not used by Configure.
5468 The value is the empty string and is not useful.
5470 ttyname_r_proto (d_ttyname_r.U):
5471 This variable encodes the prototype of ttyname_r.
5472 It is zero if d_ttyname_r is undef, and one of the
5473 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
5477 This variable is the size of an U16 in bytes.
5480 This variable contains the C type used for Perl's U16.
5483 This variable is the size of an U32 in bytes.
5486 This variable contains the C type used for Perl's U32.
5489 This variable is the size of an U64 in bytes.
5492 This variable contains the C type used for Perl's U64.
5495 This variable is the size of an U8 in bytes.
5498 This variable contains the C type used for Perl's U8.
5501 This variable contains the format string used for printing a Uid_t.
5503 uidsign (uidsign.U):
5504 This variable contains the signedness of a uidtype.
5505 1 for unsigned, -1 for signed.
5507 uidsize (uidsize.U):
5508 This variable contains the size of a uidtype in bytes.
5510 uidtype (uidtype.U):
5511 This variable defines Uid_t to be something like uid_t, int,
5512 ushort, or whatever type is used to declare user ids in the kernel.
5515 This variable is used internally by Configure to determine the
5516 full pathname (if any) of the uname program. After Configure runs,
5517 the value is reset to a plain "uname" and is not useful.
5520 This variable is used internally by Configure to determine the
5521 full pathname (if any) of the uniq program. After Configure runs,
5522 the value is reset to a plain "uniq" and is not useful.
5524 uquadtype (quadtype.U):
5525 This variable defines Uquad_t to be something like unsigned long,
5526 unsigned int, unsigned long long, uint64_t, or whatever type is
5527 used for 64-bit integers.
5529 use64bitall (use64bits.U):
5530 This variable conditionally defines the USE_64_BIT_ALL symbol,
5531 and indicates that 64-bit integer types should be used
5532 when available. The maximal possible
5533 64-bitness is employed: LP64 or ILP64, meaning that you will
5534 be able to use more than 2 gigabytes of memory. This mode is
5535 even more binary incompatible than USE_64_BIT_INT. You may not
5536 be able to run the resulting executable in a 32-bit CPU at all or
5537 you may need at least to reboot your OS to 64-bit mode.
5539 use64bitint (use64bits.U):
5540 This variable conditionally defines the USE_64_BIT_INT symbol,
5541 and indicates that 64-bit integer types should be used
5542 when available. The minimal possible 64-bitness
5543 is employed, just enough to get 64-bit integers into Perl.
5544 This may mean using for example "long longs", while your memory
5545 may still be limited to 2 gigabytes.
5547 usecbacktrace (usebacktrace.U):
5548 This variable indicates whether we are compiling with backtrace
5551 usecrosscompile (Cross.U):
5552 This variable conditionally defines the USE_CROSS_COMPILE symbol,
5553 and indicates that Perl has been cross-compiled.
5555 usedefaultstrict (usedefaultstrict.U):
5556 This setting provides a mechanism for perl developers to enable
5557 strict by default. These defaults do not apply when perl is run
5561 This variable indicates that Perl was configured with development
5562 features enabled. This should not be done for production builds.
5565 This variable indicates if the system supports dynamic
5566 loading of some sort. See also dlsrc and dlobj.
5568 usedtrace (usedtrace.U):
5569 This variable indicates whether we are compiling with dtrace
5570 support. See also dtrace.
5572 usefaststdio (usefaststdio.U):
5573 This variable conditionally defines the USE_FAST_STDIO symbol,
5574 and indicates that Perl should be built to use 'fast stdio'.
5575 Defaults to define in Perls 5.8 and earlier, to undef later.
5577 useithreads (usethreads.U):
5578 This variable conditionally defines the USE_ITHREADS symbol,
5579 and indicates that Perl should be built to use the interpreter-based
5580 threading implementation.
5582 usekernprocpathname (usekernprocpathname.U):
5583 This variable, indicates that we can use sysctl with
5584 KERN_PROC_PATHNAME to get a full path for the executable, and hence
5585 convert $^X to an absolute path.
5587 uselanginfo (Extensions.U):
5588 This variable holds either 'true' or 'false' to indicate
5589 whether the I18N::Langinfo extension should be used. The sole
5590 use for this currently is to allow an easy mechanism for users to skip
5591 this extension from the Configure command line.
5593 uselargefiles (uselfs.U):
5594 This variable conditionally defines the USE_LARGE_FILES symbol,
5595 and indicates that large file interfaces should be used when
5598 uselongdouble (uselongdbl.U):
5599 This variable conditionally defines the USE_LONG_DOUBLE symbol,
5600 and indicates that long doubles should be used when available.
5602 usemallocwrap (mallocsrc.U):
5603 This variable contains y if we are wrapping malloc to prevent
5604 integer overflow during size calculations.
5606 usemorebits (usemorebits.U):
5607 This variable conditionally defines the USE_MORE_BITS symbol,
5608 and indicates that explicit 64-bit interfaces and long doubles
5609 should be used when available.
5611 usemultiplicity (usemultiplicity.U):
5612 This variable conditionally defines the MULTIPLICITY symbol,
5613 and indicates that Perl should be built to use multiplicity.
5615 usemymalloc (mallocsrc.U):
5616 This variable contains y if the malloc that comes with this package
5617 is desired over the system's version of malloc. People often include
5618 special versions of malloc for efficiency, but such versions are often
5619 less portable. See also mallocsrc and mallocobj.
5620 If this is 'y', then -lmalloc is removed from $libs.
5623 This variable contains 'true' or 'false' depending whether the
5624 nm extraction is wanted or not.
5626 usensgetexecutablepath (usensgetexecutablepath.U):
5627 This symbol, if defined, indicates that we can use _NSGetExecutablePath
5628 and realpath to get a full path for the executable, and hence convert
5629 $^X to an absolute path.
5631 useopcode (Extensions.U):
5632 This variable holds either 'true' or 'false' to indicate
5633 whether the Opcode extension should be used. The sole
5634 use for this currently is to allow an easy mechanism
5635 for users to skip the Opcode extension from the Configure
5638 useperlio (useperlio.U):
5639 This variable conditionally defines the USE_PERLIO symbol,
5640 and indicates that the PerlIO abstraction should be
5643 useposix (Extensions.U):
5644 This variable holds either 'true' or 'false' to indicate
5645 whether the POSIX extension should be used. The sole
5646 use for this currently is to allow an easy mechanism
5647 for hints files to indicate that POSIX will not compile
5648 on a particular system.
5650 usequadmath (usequadmath.U):
5651 This variable conditionally defines the USE_QUADMATH symbol,
5652 and indicates that the quadmath library __float128 long doubles
5653 should be used when available.
5655 usereentrant (usethreads.U):
5656 This variable conditionally defines the USE_REENTRANT_API symbol,
5657 which indicates that the thread code may try to use the various
5658 _r versions of library functions. This is only potentially
5659 meaningful if usethreads is set and is very experimental, it is
5660 not even prompted for.
5662 userelocatableinc (bin.U):
5663 This variable is set to true to indicate that perl should relocate
5664 @INC entries at runtime based on the path to the perl binary.
5665 Any @INC paths starting ".../" are relocated relative to the directory
5666 containing the perl binary, and a logical cleanup of the path is then
5667 made around the join point (removing "dir/../" pairs)
5669 useshrplib (libperl.U):
5670 This variable is set to 'true' if the user wishes
5671 to build a shared libperl, and 'false' otherwise.
5673 usesitecustomize (d_sitecustomize.U):
5674 This variable is set to true when the user requires a mechanism that
5675 allows the sysadmin to add entries to @INC at runtime. This variable
5676 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
5678 usesocks (usesocks.U):
5679 This variable conditionally defines the USE_SOCKS symbol,
5680 and indicates that Perl should be built to use SOCKS.
5682 usethreads (usethreads.U):
5683 This variable conditionally defines the USE_THREADS symbol,
5684 and indicates that Perl should be built to use threads.
5686 usevendorprefix (vendorprefix.U):
5687 This variable tells whether the vendorprefix
5688 and consequently other vendor* paths are in use.
5690 useversionedarchname (archname.U):
5691 This variable indicates whether to include the $api_versionstring
5692 as a component of the $archname.
5694 usevfork (d_vfork.U):
5695 This variable is set to true when the user accepts to use vfork.
5696 It is set to false when no vfork is available or when the user
5697 explicitly requests not to use vfork.
5700 This variable holds the path of the include files, which is
5701 usually /usr/include. It is mainly used by other Configure units.
5704 This variable is defined but not used by Configure.
5705 The value is the empty string and is not useful.
5707 uvoformat (perlxvf.U):
5708 This variable contains the format string used for printing
5709 a Perl UV as an unsigned octal integer.
5712 This variable is the size of a UV in bytes.
5715 This variable contains the C type used for Perl's UV.
5717 uvuformat (perlxvf.U):
5718 This variable contains the format string used for printing
5719 a Perl UV as an unsigned decimal integer.
5721 uvxformat (perlxvf.U):
5722 This variable contains the format string used for printing
5723 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
5725 uvXUformat (perlxvf.U):
5726 This variable contains the format string used for printing
5727 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
5729 vendorarch (vendorarch.U):
5730 This variable contains the value of the PERL_VENDORARCH symbol.
5731 It may have a ~ on the front.
5732 The standard distribution will put nothing in this directory.
5733 Vendors who distribute perl may wish to place their own
5734 architecture-dependent modules and extensions in this directory with
5735 MakeMaker Makefile.PL INSTALLDIRS=vendor
5736 or equivalent. See INSTALL for details.
5738 vendorarchexp (vendorarch.U):
5739 This variable is the ~name expanded version of vendorarch, so that you
5740 may use it directly in Makefiles or shell scripts.
5742 vendorbin (vendorbin.U):
5743 This variable contains the eventual value of the VENDORBIN symbol.
5744 It may have a ~ on the front.
5745 The standard distribution will put nothing in this directory.
5746 Vendors who distribute perl may wish to place additional
5747 binaries in this directory with
5748 MakeMaker Makefile.PL INSTALLDIRS=vendor
5749 or equivalent. See INSTALL for details.
5751 vendorbinexp (vendorbin.U):
5752 This variable is the ~name expanded version of vendorbin, so that you
5753 may use it directly in Makefiles or shell scripts.
5755 vendorhtml1dir (vendorhtml1dir.U):
5756 This variable contains the name of the directory for html
5757 pages. It may have a ~ on the front.
5758 The standard distribution will put nothing in this directory.
5759 Vendors who distribute perl may wish to place their own
5760 html pages in this directory with
5761 MakeMaker Makefile.PL INSTALLDIRS=vendor
5762 or equivalent. See INSTALL for details.
5764 vendorhtml1direxp (vendorhtml1dir.U):
5765 This variable is the ~name expanded version of vendorhtml1dir, so that you
5766 may use it directly in Makefiles or shell scripts.
5768 vendorhtml3dir (vendorhtml3dir.U):
5769 This variable contains the name of the directory for html
5770 library pages. It may have a ~ on the front.
5771 The standard distribution will put nothing in this directory.
5772 Vendors who distribute perl may wish to place their own
5773 html pages for modules and extensions in this directory with
5774 MakeMaker Makefile.PL INSTALLDIRS=vendor
5775 or equivalent. See INSTALL for details.
5777 vendorhtml3direxp (vendorhtml3dir.U):
5778 This variable is the ~name expanded version of vendorhtml3dir, so that you
5779 may use it directly in Makefiles or shell scripts.
5781 vendorlib (vendorlib.U):
5782 This variable contains the eventual value of the VENDORLIB symbol,
5783 which is the name of the private library for this package.
5784 The standard distribution will put nothing in this directory.
5785 Vendors who distribute perl may wish to place their own
5786 modules in this directory with
5787 MakeMaker Makefile.PL INSTALLDIRS=vendor
5788 or equivalent. See INSTALL for details.
5790 vendorlib_stem (vendorlib.U):
5791 This variable is $vendorlibexp with any trailing version-specific component
5792 removed. The elements in inc_version_list (inc_version_list.U) can
5793 be tacked onto this variable to generate a list of directories to search.
5795 vendorlibexp (vendorlib.U):
5796 This variable is the ~name expanded version of vendorlib, so that you
5797 may use it directly in Makefiles or shell scripts.
5799 vendorman1dir (vendorman1dir.U):
5800 This variable contains the name of the directory for man1
5801 pages. It may have a ~ on the front.
5802 The standard distribution will put nothing in this directory.
5803 Vendors who distribute perl may wish to place their own
5804 man1 pages in this directory with
5805 MakeMaker Makefile.PL INSTALLDIRS=vendor
5806 or equivalent. See INSTALL for details.
5808 vendorman1direxp (vendorman1dir.U):
5809 This variable is the ~name expanded version of vendorman1dir, so that you
5810 may use it directly in Makefiles or shell scripts.
5812 vendorman3dir (vendorman3dir.U):
5813 This variable contains the name of the directory for man3
5814 pages. It may have a ~ on the front.
5815 The standard distribution will put nothing in this directory.
5816 Vendors who distribute perl may wish to place their own
5817 man3 pages in this directory with
5818 MakeMaker Makefile.PL INSTALLDIRS=vendor
5819 or equivalent. See INSTALL for details.
5821 vendorman3direxp (vendorman3dir.U):
5822 This variable is the ~name expanded version of vendorman3dir, so that you
5823 may use it directly in Makefiles or shell scripts.
5825 vendorprefix (vendorprefix.U):
5826 This variable holds the full absolute path of the directory below
5827 which the vendor will install add-on packages.
5828 See INSTALL for usage and examples.
5830 vendorprefixexp (vendorprefix.U):
5831 This variable holds the full absolute path of the directory below
5832 which the vendor will install add-on packages. Derived from vendorprefix.
5834 vendorscript (vendorscript.U):
5835 This variable contains the eventual value of the VENDORSCRIPT symbol.
5836 It may have a ~ on the front.
5837 The standard distribution will put nothing in this directory.
5838 Vendors who distribute perl may wish to place additional
5839 executable scripts in this directory with
5840 MakeMaker Makefile.PL INSTALLDIRS=vendor
5841 or equivalent. See INSTALL for details.
5843 vendorscriptexp (vendorscript.U):
5844 This variable is the ~name expanded version of vendorscript, so that you
5845 may use it directly in Makefiles or shell scripts.
5847 version (patchlevel.U):
5848 The full version number of this package, such as 5.6.1 (or 5_6_1).
5849 This combines revision, patchlevel, and subversion to get the
5850 full version number, including any possible subversions.
5851 This is suitable for use as a directory name, and hence is
5852 filesystem dependent.
5854 version_patchlevel_string (patchlevel.U):
5855 This is a string combining version, subversion and
5856 perl_patchlevel (if perl_patchlevel is non-zero).
5857 It is typically something like
5858 'version 7 subversion 1' or
5859 'version 7 subversion 1 patchlevel 11224'
5860 It is computed here to avoid duplication of code in myconfig.SH
5863 versiononly (versiononly.U):
5864 If set, this symbol indicates that only the version-specific
5865 components of a perl installation should be installed.
5866 This may be useful for making a test installation of a new
5867 version without disturbing the existing installation.
5868 Setting versiononly is equivalent to setting installperl's -v option.
5869 In particular, the non-versioned scripts and programs such as
5870 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5871 (see INSTALL for a more complete list). Nor are the man
5873 Usually, this is undef.
5876 This variable is defined but not used by Configure.
5877 The value is the empty string and is not useful.
5880 This variable holds extra path (space-separated) used to find
5881 libraries on this platform, for example CPU-specific libraries
5882 (on multi-CPU platforms) may be listed here.
5885 This variable holds the name of the compiler compiler we
5886 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5889 This variable contains any additional yacc flags desired by the
5890 user. It is up to the Makefile to use this.
5893 This variable is defined but not used by Configure.
5894 The value is the empty string and is not useful.
5897 This variable is used internally by Configure to determine the
5898 full pathname (if any) of the zip program. After Configure runs,
5899 the value is reset to a plain "zip" and is not useful.