2 !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
3 This file is built by metaconfig.
5 This file contains a description of all the shell variables whose value is
6 determined by the Configure script. Variables intended for use in C
7 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
8 generates pod documentation for Config.pm from this file--please try to keep
9 the formatting regular.]
12 This variable defines the extension used for ordinary library files.
13 For unix, it is '.a'. The '.' is included. Other possible
14 values include '.lib'.
17 This variable defines the extension used for executable files.
18 DJGPP, Cygwin and OS/2 use '.exe'. Stratus VOS uses '.pm'.
19 On operating systems which do not require a specific extension
20 for executable files, this variable is empty.
23 This variable defines the extension used for object files.
24 For unix, it is '.o'. The '.' is included. Other possible
25 values include '.obj'.
28 This variable is set to 'true' if AFS (Andrew File System) is used
29 on the system, 'false' otherwise. It is possible to override this
30 with a hint value or command line option, but you'd better know
34 This variable is by default set to '/afs'. In the unlikely case
35 this is not the correct root, it is possible to override this with
36 a hint value or command line option. This will be used in subsequent
37 tests for AFSness in the configure and test process.
39 alignbytes (alignbytes.U):
40 This variable holds the number of bytes required to align a
41 double-- or a long double when applicable. Usual values are
42 2, 4 and 8. The default is eight, for safety.
44 aphostname (d_gethname.U):
45 This variable contains the command which can be used to compute the
46 host name. The command is fully qualified by its absolute path, to make
47 it safe when used by a process with super-user privileges.
49 api_revision (patchlevel.U):
50 The three variables, api_revision, api_version, and
51 api_subversion, specify the version of the oldest perl binary
52 compatible with the present perl. In a full version string
53 such as '5.6.1', api_revision is the '5'.
54 Prior to 5.5.640, the format was a floating point number,
57 perl.c:incpush() and lib/lib.pm will automatically search in
58 $sitelib/.. for older directories back to the limit specified
59 by these api_ variables. This is only useful if you have a
60 perl library directory tree structured like the default one.
61 See INSTALL for how this works. The versioned site_perl
62 directory was introduced in 5.005, so that is the lowest
63 possible value. The version list appropriate for the current
64 system is determined in inc_version_list.U.
66 XXX To do: Since compatibility can depend on compile time
67 options (such as bincompat, longlong, etc.) it should
68 (perhaps) be set by Configure, but currently it isn't.
69 Currently, we read a hard-wired value from patchlevel.h.
70 Perhaps what we ought to do is take the hard-wired value from
71 patchlevel.h but then modify it if the current Configure
72 options warrant. patchlevel.h then would use an #ifdef guard.
74 api_subversion (patchlevel.U):
75 The three variables, api_revision, api_version, and
76 api_subversion, specify the version of the oldest perl binary
77 compatible with the present perl. In a full version string
78 such as '5.6.1', api_subversion is the '1'. See api_revision for
81 api_version (patchlevel.U):
82 The three variables, api_revision, api_version, and
83 api_subversion, specify the version of the oldest perl binary
84 compatible with the present perl. In a full version string
85 such as '5.6.1', api_version is the '6'. See api_revision for
86 full details. As a special case, 5.5.0 is rendered in the
87 old-style as 5.005. (In the 5.005_0x maintenance series,
88 this was the only versioned directory in $sitelib.)
90 api_versionstring (patchlevel.U):
91 This variable combines api_revision, api_version, and
92 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
93 for use as a directory name. This is filesystem dependent.
96 This variable is used internally by Configure to determine the
97 full pathname (if any) of the ar program. After Configure runs,
98 the value is reset to a plain "ar" and is not useful.
101 This variable holds the name of the directory in which the user wants
102 to put architecture-dependent public library files for $package.
103 It is most often a local directory such as /usr/local/lib.
104 Programs using this variable must be prepared to deal
105 with filename expansion.
107 archlibexp (archlib.U):
108 This variable is the same as the archlib variable, but is
109 filename expanded at configuration time, for convenient use.
111 archname (archname.U):
112 This variable is a short name to characterize the current
113 architecture. It is used mainly to construct the default archlib.
115 archname64 (use64bits.U):
116 This variable is used for the 64-bitness part of $archname.
119 This variable defines any additional objects that must be linked
120 in with the program on this architecture. On unix, it is usually
121 empty. It is typically used to include emulations of unix calls
122 or other facilities. For perl on OS/2, for example, this would
125 asctime_r_proto (d_asctime_r.U):
126 This variable encodes the prototype of asctime_r.
127 It is zero if d_asctime_r is undef, and one of the
128 REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
132 This variable is used internally by Configure to determine the
133 full pathname (if any) of the awk program. After Configure runs,
134 the value is reset to a plain "awk" and is not useful.
137 The base revision level of this package, from the .package file.
140 This variable is defined but not used by Configure.
141 The value is the empty string and is not useful.
144 This variable holds the name of the directory in which the user wants
145 to put publicly executable images for the package in question. It
146 is most often a local directory such as /usr/local/bin. Programs using
147 this variable must be prepared to deal with ~name substitution.
150 This variable saves the result from configure if generated binaries
151 are in ELF format. Only set to defined when the test has actually
152 been performed, and the result was positive.
155 This is the same as the bin variable, but is filename expanded at
156 configuration time, for use in your makefiles.
159 This variable is used internally by Configure to determine the
160 full pathname (if any) of the bison program. After Configure runs,
161 the value is reset to a plain "bison" and is not useful.
164 This variable is used internally by Configure to determine the
165 full pathname (if any) of the byacc program. After Configure runs,
166 the value is reset to a plain "byacc" and is not useful.
168 byteorder (byteorder.U):
169 This variable holds the byte order in a UV. In the following,
170 larger digits indicate more significance. The variable byteorder
171 is either 4321 on a big-endian machine, or 1234 on a little-endian,
172 or 87654321 on a Cray ... or 3412 with weird order !
175 This variable contains the \c string if that is what causes the echo
176 command to suppress newline. Otherwise it is null. Correct usage is
177 $echo $n "prompt for a question: $c".
179 castflags (d_castneg.U):
180 This variable contains a flag that precise difficulties the
181 compiler has casting odd floating values to unsigned long:
183 1 = couldn't cast < 0
184 2 = couldn't cast >= 0x80000000
185 4 = couldn't cast in argument expression list
188 This variable is used internally by Configure to determine the
189 full pathname (if any) of the cat program. After Configure runs,
190 the value is reset to a plain "cat" and is not useful.
193 This variable holds the name of a command to execute a C compiler which
194 can resolve multiple global references that happen to have the same
195 name. Usual values are 'cc' and 'gcc'.
196 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
198 cccdlflags (dlsrc.U):
199 This variable contains any special flags that might need to be
200 passed with 'cc -c' to compile modules to be used to create a shared
201 library that will be used for dynamic loading. For hpux, this
202 should be +z. It is up to the makefile to use it.
205 This variable contains any special flags that might need to be
206 passed to cc to link with a shared library for dynamic loading.
207 It is up to the makefile to use it. For sunos 4.1, it should
211 This variable contains any additional C compiler flags desired by
212 the user. It is up to the Makefile to use this.
214 ccflags_uselargefiles (uselfs.U):
215 This variable contains the compiler flags needed by large file builds
216 and added to ccflags by hints files.
219 This can set either by hints files or by Configure. If using
220 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
221 Some platforms, however, make good use of this by storing the
222 flavor of the C compiler being used here. For example if using
223 the Sun WorkShop suite, ccname will be 'workshop'.
225 ccsymbols (Cppsym.U):
226 The variable contains the symbols defined by the C compiler alone.
227 The symbols defined by cpp or by cc when it calls cpp are not in
228 this list, see cppsymbols and cppccsymbols.
229 The list is a space-separated list of symbol=value tokens.
231 ccversion (Checkcc.U):
232 This can set either by hints files or by Configure. If using
233 a (non-gcc) vendor cc, this variable may contain a version for
237 Login name of the person who ran the Configure script and answered the
238 questions. This is used to tag both config.sh and config_h.SH.
240 cf_email (cf_email.U):
241 Electronic mail address of the person who ran Configure. This can be
242 used by units that require the user's e-mail, like MailList.U.
245 Holds the output of the "date" command when the configuration file was
246 produced. This is used to tag both config.sh and config_h.SH.
248 charbits (charsize.U):
249 This variable contains the value of the CHARBITS symbol, which
250 indicates to the C program how many bits there are in a character.
252 charsize (charsize.U):
253 This variable contains the value of the CHARSIZE symbol, which
254 indicates to the C program how many bytes there are in a character.
257 This variable is defined but not used by Configure.
258 The value is the empty string and is not useful.
261 This variable is used internally by Configure to determine the
262 full pathname (if any) of the chmod program. After Configure runs,
263 the value is reset to a plain "chmod" and is not useful.
266 This variable is defined but not used by Configure.
267 The value is the empty string and is not useful.
269 clocktype (d_times.U):
270 This variable holds the type returned by times(). It can be long,
271 or clock_t on BSD sites (in which case <sys/types.h> should be
275 This variable is used internally by Configure to determine the
276 full pathname (if any) of the comm program. After Configure runs,
277 the value is reset to a plain "comm" and is not useful.
280 This variable is defined but not used by Configure.
281 The value is the empty string and is not useful.
283 config_arg0 (Options.U):
284 This variable contains the string used to invoke the Configure
285 command, as reported by the shell in the $0 variable.
287 config_argc (Options.U):
288 This variable contains the number of command-line arguments
289 passed to Configure, as reported by the shell in the $# variable.
290 The individual arguments are stored as variables config_arg1,
293 config_args (Options.U):
294 This variable contains a single string giving the command-line
295 arguments passed to Configure. Spaces within arguments,
296 quotes, and escaped characters are not correctly preserved.
297 To reconstruct the command line, you must assemble the individual
298 command line pieces, given in config_arg[0-9]*.
300 contains (contains.U):
301 This variable holds the command to do a grep with a proper return
302 status. On most sane systems it is simply "grep". On insane systems
303 it is a grep followed by a cat followed by a test. This variable
304 is primarily for the use of other Configure units.
307 This variable is used internally by Configure to determine the
308 full pathname (if any) of the cp program. After Configure runs,
309 the value is reset to a plain "cp" and is not useful.
312 This variable is defined but not used by Configure.
313 The value is the empty string and is not useful.
316 This variable is used internally by Configure to determine the
317 full pathname (if any) of the cpp program. After Configure runs,
318 the value is reset to a plain "cpp" and is not useful.
320 cpp_stuff (cpp_stuff.U):
321 This variable contains an identification of the concatenation mechanism
322 used by the C preprocessor.
324 cppccsymbols (Cppsym.U):
325 The variable contains the symbols defined by the C compiler
326 when it calls cpp. The symbols defined by the cc alone or cpp
327 alone are not in this list, see ccsymbols and cppsymbols.
328 The list is a space-separated list of symbol=value tokens.
330 cppflags (ccflags.U):
331 This variable holds the flags that will be passed to the C pre-
332 processor. It is up to the Makefile to use it.
334 cpplast (cppstdin.U):
335 This variable has the same functionality as cppminus, only it applies
336 to cpprun and not cppstdin.
338 cppminus (cppstdin.U):
339 This variable contains the second part of the string which will invoke
340 the C preprocessor on the standard input and produce to standard
341 output. This variable will have the value "-" if cppstdin needs
342 a minus to specify standard input, otherwise the value is "".
345 This variable contains the command which will invoke a C preprocessor
346 on standard input and put the output to stdout. It is guaranteed not
347 to be a wrapper and may be a null string if no preprocessor can be
348 made directly available. This preprocessor might be different from the
349 one used by the C compiler. Don't forget to append cpplast after the
350 preprocessor options.
352 cppstdin (cppstdin.U):
353 This variable contains the command which will invoke the C
354 preprocessor on standard input and put the output to stdout.
355 It is primarily used by other Configure units that ask about
356 preprocessor symbols.
358 cppsymbols (Cppsym.U):
359 The variable contains the symbols defined by the C preprocessor
360 alone. The symbols defined by cc or by cc when it calls cpp are
361 not in this list, see ccsymbols and cppccsymbols.
362 The list is a space-separated list of symbol=value tokens.
364 crypt_r_proto (d_crypt_r.U):
365 This variable encodes the prototype of crypt_r.
366 It is zero if d_crypt_r is undef, and one of the
367 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
370 cryptlib (d_crypt.U):
371 This variable holds -lcrypt or the path to a libcrypt.a archive if
372 the crypt() function is not defined in the standard C library. It is
373 up to the Makefile to use this.
376 This variable is used internally by Configure to determine the
377 full pathname (if any) of the csh program. After Configure runs,
378 the value is reset to a plain "csh" and is not useful.
380 ctermid_r_proto (d_ctermid_r.U):
381 This variable encodes the prototype of ctermid_r.
382 It is zero if d_ctermid_r is undef, and one of the
383 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
386 ctime_r_proto (d_ctime_r.U):
387 This variable encodes the prototype of ctime_r.
388 It is zero if d_ctime_r is undef, and one of the
389 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
392 d__fwalk (d__fwalk.U):
393 This variable conditionally defines HAS__FWALK if _fwalk() is
394 available to apply a function to all the file handles.
396 d_access (d_access.U):
397 This variable conditionally defines HAS_ACCESS if the access() system
398 call is available to check for access permissions using real IDs.
400 d_accessx (d_accessx.U):
401 This variable conditionally defines the HAS_ACCESSX symbol, which
402 indicates to the C program that the accessx() routine is available.
405 This variable conditionally defines the HAS_ACOSH symbol, which
406 indicates to the C program that the acosh() routine is available.
409 This variable conditionally defines the HAS_AINTL symbol, which
410 indicates to the C program that the aintl() routine is available.
411 If copysignl is also present we can emulate modfl.
414 This variable conditionally defines the HAS_ALARM symbol, which
415 indicates to the C program that the alarm() routine is available.
417 d_archlib (archlib.U):
418 This variable conditionally defines ARCHLIB to hold the pathname
419 of architecture-dependent library files for $package. If
420 $archlib is the same as $privlib, then this is set to undef.
422 d_asctime64 (d_timefuncs64.U):
423 This variable conditionally defines the HAS_ASCTIME64 symbol, which
424 indicates to the C program that the asctime64 () routine is available.
426 d_asctime_r (d_asctime_r.U):
427 This variable conditionally defines the HAS_ASCTIME_R symbol,
428 which indicates to the C program that the asctime_r()
429 routine is available.
432 This variable conditionally defines the HAS_ASINH symbol, which
433 indicates to the C program that the asinh() routine is available.
436 This variable conditionally defines the HAS_ATANH symbol, which
437 indicates to the C program that the atanh() routine is available.
440 This variable conditionally defines the HAS_ATOLF symbol, which
441 indicates to the C program that the atolf() routine is available.
444 This variable conditionally defines the HAS_ATOLL symbol, which
445 indicates to the C program that the atoll() routine is available.
447 d_attribute_deprecated (d_attribut.U):
448 This variable conditionally defines HASATTRIBUTE_DEPRECATED, which
449 indicates that GCC can handle the attribute for marking deprecated
452 d_attribute_format (d_attribut.U):
453 This variable conditionally defines HASATTRIBUTE_FORMAT, which
454 indicates the C compiler can check for printf-like formats.
456 d_attribute_malloc (d_attribut.U):
457 This variable conditionally defines HASATTRIBUTE_MALLOC, which
458 indicates the C compiler can understand functions as having
459 malloc-like semantics.
461 d_attribute_nonnull (d_attribut.U):
462 This variable conditionally defines HASATTRIBUTE_NONNULL, which
463 indicates that the C compiler can know that certain arguments
464 must not be NULL, and will check accordingly at compile time.
466 d_attribute_noreturn (d_attribut.U):
467 This variable conditionally defines HASATTRIBUTE_NORETURN, which
468 indicates that the C compiler can know that certain functions
469 are guaranteed never to return.
471 d_attribute_pure (d_attribut.U):
472 This variable conditionally defines HASATTRIBUTE_PURE, which
473 indicates that the C compiler can know that certain functions
474 are "pure" functions, meaning that they have no side effects, and
475 only rely on function input and/or global data for their results.
477 d_attribute_unused (d_attribut.U):
478 This variable conditionally defines HASATTRIBUTE_UNUSED, which
479 indicates that the C compiler can know that certain variables
480 and arguments may not always be used, and to not throw warnings
481 if they don't get used.
483 d_attribute_warn_unused_result (d_attribut.U):
484 This variable conditionally defines
485 HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
486 compiler can know that certain functions have a return values
487 that must not be ignored, such as malloc() or open().
489 d_backtrace (d_backtrace.U):
490 This variable conditionally defines the HAS_BACKTRACE symbol, which
491 indicates to the C program that the backtrace() routine is available
492 to get a stack trace.
495 This symbol conditionally defines the symbol BSD when running on a
498 d_bsdgetpgrp (d_getpgrp.U):
499 This variable conditionally defines USE_BSD_GETPGRP if
500 getpgrp needs one arguments whereas USG one needs none.
502 d_bsdsetpgrp (d_setpgrp.U):
503 This variable conditionally defines USE_BSD_SETPGRP if
504 setpgrp needs two arguments whereas USG one needs none.
505 See also d_setpgid for a POSIX interface.
507 d_builtin_choose_expr (d_builtin.U):
508 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
509 indicates that the compiler supports __builtin_choose_expr(x,y,z).
510 This built-in function is analogous to the "x?y:z" operator in C,
511 except that the expression returned has its type unaltered by
512 promotion rules. Also, the built-in function does not evaluate
513 the expression that was not chosen.
515 d_builtin_expect (d_builtin.U):
516 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
517 that the compiler supports __builtin_expect(exp,c). You may use
518 __builtin_expect to provide the compiler with branch prediction
521 d_c99_variadic_macros (d_c99_variadic.U):
522 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
523 symbol, which indicates to the C program that C99 variadic macros
526 d_casti32 (d_casti32.U):
527 This variable conditionally defines CASTI32, which indicates
528 whether the C compiler can cast large floats to 32-bit ints.
530 d_castneg (d_castneg.U):
531 This variable conditionally defines CASTNEG, which indicates
532 whether the C compiler can cast negative float to unsigned.
535 This variable conditionally defines the HAS_CBRT symbol, which
536 indicates to the C program that the cbrt() (cube root) function
540 This variable conditionally defines the HAS_CHOWN symbol, which
541 indicates to the C program that the chown() routine is available.
543 d_chroot (d_chroot.U):
544 This variable conditionally defines the HAS_CHROOT symbol, which
545 indicates to the C program that the chroot() routine is available.
547 d_chsize (d_chsize.U):
548 This variable conditionally defines the CHSIZE symbol, which
549 indicates to the C program that the chsize() routine is available
550 to truncate files. You might need a -lx to get this routine.
553 This variable conditionally defines the HAS_CLASS symbol, which
554 indicates to the C program that the class() routine is available.
556 d_clearenv (d_clearenv.U):
557 This variable conditionally defines the HAS_CLEARENV symbol, which
558 indicates to the C program that the clearenv () routine is available.
560 d_closedir (d_closedir.U):
561 This variable conditionally defines HAS_CLOSEDIR if closedir() is
564 d_cmsghdr_s (d_cmsghdr_s.U):
565 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
566 which indicates that the struct cmsghdr is supported.
569 This variable conditionally defines the HASCONST symbol, which
570 indicates to the C program that this C compiler knows about the
573 d_copysign (d_copysign.U):
574 This variable conditionally defines the HAS_COPYSIGN symbol, which
575 indicates to the C program that the copysign() routine is available.
577 d_copysignl (d_copysignl.U):
578 This variable conditionally defines the HAS_COPYSIGNL symbol, which
579 indicates to the C program that the copysignl() routine is available.
580 If aintl is also present we can emulate modfl.
582 d_cplusplus (d_cplusplus.U):
583 This variable conditionally defines the USE_CPLUSPLUS symbol, which
584 indicates that a C++ compiler was used to compiled Perl and will be
585 used to compile extensions.
588 This variable conditionally defines the CRYPT symbol, which
589 indicates to the C program that the crypt() routine is available
590 to encrypt passwords and the like.
592 d_crypt_r (d_crypt_r.U):
593 This variable conditionally defines the HAS_CRYPT_R symbol,
594 which indicates to the C program that the crypt_r()
595 routine is available.
598 This variable conditionally defines the CSH symbol, which
599 indicates to the C program that the C-shell exists.
601 d_ctermid (d_ctermid.U):
602 This variable conditionally defines CTERMID if ctermid() is
603 available to generate filename for terminal.
605 d_ctermid_r (d_ctermid_r.U):
606 This variable conditionally defines the HAS_CTERMID_R symbol,
607 which indicates to the C program that the ctermid_r()
608 routine is available.
610 d_ctime64 (d_timefuncs64.U):
611 This variable conditionally defines the HAS_CTIME64 symbol, which
612 indicates to the C program that the ctime64 () routine is available.
614 d_ctime_r (d_ctime_r.U):
615 This variable conditionally defines the HAS_CTIME_R symbol,
616 which indicates to the C program that the ctime_r()
617 routine is available.
619 d_cuserid (d_cuserid.U):
620 This variable conditionally defines the HAS_CUSERID symbol, which
621 indicates to the C program that the cuserid() routine is available
622 to get character login names.
624 d_dbl_dig (d_dbl_dig.U):
625 This variable conditionally defines d_dbl_dig if this system's
626 header files provide DBL_DIG, which is the number of significant
627 digits in a double precision number.
629 d_dbminitproto (d_dbminitproto.U):
630 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
631 which indicates to the C program that the system provides
632 a prototype for the dbminit() function. Otherwise, it is
633 up to the program to supply one.
635 d_difftime (d_difftime.U):
636 This variable conditionally defines the HAS_DIFFTIME symbol, which
637 indicates to the C program that the difftime() routine is available.
639 d_difftime64 (d_timefuncs64.U):
640 This variable conditionally defines the HAS_DIFFTIME64 symbol, which
641 indicates to the C program that the difftime64 () routine is available.
643 d_dir_dd_fd (d_dir_dd_fd.U):
644 This variable conditionally defines the HAS_DIR_DD_FD symbol, which
645 indicates that the DIR directory stream type contains a member
646 variable called dd_fd.
649 This variable conditionally defines the HAS_DIRFD constant,
650 which indicates to the C program that dirfd() is available
651 to return the file descriptor of a directory stream.
653 d_dirnamlen (i_dirent.U):
654 This variable conditionally defines DIRNAMLEN, which indicates
655 to the C program that the length of directory entry names is
656 provided by a d_namelen field.
658 d_dladdr (d_dladdr.U):
659 This variable conditionally defines the HAS_DLADDR symbol, which
660 indicates to the C program that the dladdr() routine is available
661 to get a stack trace.
663 d_dlerror (d_dlerror.U):
664 This variable conditionally defines the HAS_DLERROR symbol, which
665 indicates to the C program that the dlerror() routine is available.
667 d_dlopen (d_dlopen.U):
668 This variable conditionally defines the HAS_DLOPEN symbol, which
669 indicates to the C program that the dlopen() routine is available.
671 d_dlsymun (d_dlsymun.U):
672 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
673 indicates that we need to prepend an underscore to the symbol
674 name before calling dlsym().
676 d_dosuid (d_dosuid.U):
677 This variable conditionally defines the symbol DOSUID, which
678 tells the C program that it should insert setuid emulation code
679 on hosts which have setuid #! scripts disabled.
681 d_double_has_inf (longdblfio.U):
682 This variable conditionally defines the symbol DOUBLE_HAS_INF
683 which indicates that the double type has an infinity.
685 d_double_has_nan (longdblfio.U):
686 This variable conditionally defines the symbol DOUBLE_HAS_INF
687 which indicates that the double type has a not-a-number.
689 d_double_has_negative_zero (longdblfio.U):
690 This variable conditionally defines the symbol DOUBLE_HAS_NEGATIVE_ZERO
691 which indicates that the double type has a negative zero.
693 d_double_has_subnormals (longdblfio.U):
694 This variable conditionally defines the symbol DOUBLE_HAS_SUBNORMALS
695 which indicates that the double type has subnormals (denormals).
697 d_double_style_cray (longdblfio.U):
698 This variable conditionally defines the symbol DOUBLE_STYLE_CRAY
699 which indicates that the double is the 64-bit CRAY mainframe format.
701 d_double_style_ibm (longdblfio.U):
702 This variable conditionally defines the symbol DOUBLE_STYLE_IBM,
703 which indicates that the double is the 64-bit IBM mainframe format.
705 d_double_style_ieee (longdblfio.U):
706 This variable conditionally defines the symbol DOUBLE_STYLE_IEEE,
707 which indicates that the double is the 64-bit IEEE 754.
709 d_double_style_vax (longdblfio.U):
710 This variable conditionally defines the symbol DOUBLE_STYLE_VAX,
711 which indicates that the double is the 64-bit VAX format D or G.
713 d_drand48_r (d_drand48_r.U):
714 This variable conditionally defines the HAS_DRAND48_R symbol,
715 which indicates to the C program that the drand48_r()
716 routine is available.
718 d_drand48proto (d_drand48proto.U):
719 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
720 which indicates to the C program that the system provides
721 a prototype for the drand48() function. Otherwise, it is
722 up to the program to supply one.
725 This variable conditionally defines HAS_DUP2 if dup2() is
726 available to duplicate file descriptors.
728 d_duplocale (d_newlocale.U):
729 This variable conditionally defines the HAS_DUPLOCALE symbol, which
730 indicates to the C program that the duplocale() routine is available
731 to duplicate a locale object.
733 d_eaccess (d_eaccess.U):
734 This variable conditionally defines the HAS_EACCESS symbol, which
735 indicates to the C program that the eaccess() routine is available.
737 d_endgrent (d_endgrent.U):
738 This variable conditionally defines the HAS_ENDGRENT symbol, which
739 indicates to the C program that the endgrent() routine is available
740 for sequential access of the group database.
742 d_endgrent_r (d_endgrent_r.U):
743 This variable conditionally defines the HAS_ENDGRENT_R symbol,
744 which indicates to the C program that the endgrent_r()
745 routine is available.
747 d_endhent (d_endhent.U):
748 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
749 available to close whatever was being used for host queries.
751 d_endhostent_r (d_endhostent_r.U):
752 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
753 which indicates to the C program that the endhostent_r()
754 routine is available.
756 d_endnent (d_endnent.U):
757 This variable conditionally defines HAS_ENDNETENT if endnetent() is
758 available to close whatever was being used for network queries.
760 d_endnetent_r (d_endnetent_r.U):
761 This variable conditionally defines the HAS_ENDNETENT_R symbol,
762 which indicates to the C program that the endnetent_r()
763 routine is available.
765 d_endpent (d_endpent.U):
766 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
767 available to close whatever was being used for protocol queries.
769 d_endprotoent_r (d_endprotoent_r.U):
770 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
771 which indicates to the C program that the endprotoent_r()
772 routine is available.
774 d_endpwent (d_endpwent.U):
775 This variable conditionally defines the HAS_ENDPWENT symbol, which
776 indicates to the C program that the endpwent() routine is available
777 for sequential access of the passwd database.
779 d_endpwent_r (d_endpwent_r.U):
780 This variable conditionally defines the HAS_ENDPWENT_R symbol,
781 which indicates to the C program that the endpwent_r()
782 routine is available.
784 d_endsent (d_endsent.U):
785 This variable conditionally defines HAS_ENDSERVENT if endservent() is
786 available to close whatever was being used for service queries.
788 d_endservent_r (d_endservent_r.U):
789 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
790 which indicates to the C program that the endservent_r()
791 routine is available.
793 d_eofnblk (nblock_io.U):
794 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
795 when reading from a non-blocking I/O source.
798 This variable conditionally defines the HAS_ERF symbol, which
799 indicates to the C program that the erf() routine is available.
802 This variable conditionally defines the HAS_ERFC symbol, which
803 indicates to the C program that the erfc() routine is available.
806 This variable conditionally defines the symbols EUNICE and VAX, which
807 alerts the C program that it must deal with idiosyncrasies of VMS.
810 This variable conditionally defines the HAS_EXP2 symbol, which
811 indicates to the C program that the exp2() routine is available.
814 This variable conditionally defines the HAS_EXPM1 symbol, which
815 indicates to the C program that the expm1() routine is available.
817 d_faststdio (d_faststdio.U):
818 This variable conditionally defines the HAS_FAST_STDIO symbol,
819 which indicates to the C program that the "fast stdio" is available
820 to manipulate the stdio buffers directly.
822 d_fchdir (d_fchdir.U):
823 This variable conditionally defines the HAS_FCHDIR symbol, which
824 indicates to the C program that the fchdir() routine is available.
826 d_fchmod (d_fchmod.U):
827 This variable conditionally defines the HAS_FCHMOD symbol, which
828 indicates to the C program that the fchmod() routine is available
829 to change mode of opened files.
831 d_fchmodat (d_fsat.U):
832 This variable conditionally defines the HAS_FCHMODAT symbol, which
833 indicates the POSIX fchmodat() function is available.
835 d_fchown (d_fchown.U):
836 This variable conditionally defines the HAS_FCHOWN symbol, which
837 indicates to the C program that the fchown() routine is available
838 to change ownership of opened files.
841 This variable conditionally defines the HAS_FCNTL symbol, and indicates
842 whether the fcntl() function exists
844 d_fcntl_can_lock (d_fcntl_can_lock.U):
845 This variable conditionally defines the FCNTL_CAN_LOCK symbol
846 and indicates whether file locking with fcntl() works.
848 d_fd_macros (d_fd_set.U):
849 This variable contains the eventual value of the HAS_FD_MACROS symbol,
850 which indicates if your C compiler knows about the macros which
851 manipulate an fd_set.
853 d_fd_set (d_fd_set.U):
854 This variable contains the eventual value of the HAS_FD_SET symbol,
855 which indicates if your C compiler knows about the fd_set typedef.
857 d_fdclose (d_fdclose.U):
858 This variable conditionally defines the HAS_FDCLOSE symbol, which
859 indicates to the C program that the fdclose() routine is available.
862 This variable conditionally defines the HAS_FDIM symbol, which
863 indicates to the C program that the fdim() routine is available.
865 d_fds_bits (d_fd_set.U):
866 This variable contains the eventual value of the HAS_FDS_BITS symbol,
867 which indicates if your fd_set typedef contains the fds_bits member.
868 If you have an fd_set typedef, but the dweebs who installed it did
869 a half-fast job and neglected to provide the macros to manipulate
870 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
872 d_fegetround (d_fegetround.U):
873 This variable conditionally defines HAS_FEGETROUND if fegetround() is
874 available to get the floating point rounding mode.
876 d_fgetpos (d_fgetpos.U):
877 This variable conditionally defines HAS_FGETPOS if fgetpos() is
878 available to get the file position indicator.
880 d_finite (d_finite.U):
881 This variable conditionally defines the HAS_FINITE symbol, which
882 indicates to the C program that the finite() routine is available.
884 d_finitel (d_finitel.U):
885 This variable conditionally defines the HAS_FINITEL symbol, which
886 indicates to the C program that the finitel() routine is available.
888 d_flexfnam (d_flexfnam.U):
889 This variable conditionally defines the FLEXFILENAMES symbol, which
890 indicates that the system supports filenames longer than 14 characters.
893 This variable conditionally defines HAS_FLOCK if flock() is
894 available to do file locking.
896 d_flockproto (d_flockproto.U):
897 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
898 which indicates to the C program that the system provides
899 a prototype for the flock() function. Otherwise, it is
900 up to the program to supply one.
903 This variable conditionally defines the HAS_FMA symbol, which
904 indicates to the C program that the fma() routine is available.
907 This variable conditionally defines the HAS_FMAX symbol, which
908 indicates to the C program that the fmax() routine is available.
911 This variable conditionally defines the HAS_FMIN symbol, which
912 indicates to the C program that the fmin() routine is available.
915 This variable conditionally defines the HAS_FORK symbol, which
916 indicates to the C program that the fork() routine is available.
918 d_fp_class (d_fp_class.U):
919 This variable conditionally defines the HAS_FP_CLASS symbol, which
920 indicates to the C program that the fp_class() routine is available.
922 d_fp_classify (d_fpclassify.U):
923 This variable conditionally defines the HAS_FP_CLASSIFY symbol, which
924 indicates to the C program that the fp_classify() routine is available.
926 d_fp_classl (d_fp_classl.U):
927 This variable conditionally defines the HAS_FP_CLASSL symbol, which
928 indicates to the C program that the fp_classl() routine is available.
930 d_fpathconf (d_pathconf.U):
931 This variable conditionally defines the HAS_FPATHCONF symbol, which
932 indicates to the C program that the pathconf() routine is available
933 to determine file-system related limits and options associated
934 with a given open file descriptor.
936 d_fpclass (d_fpclass.U):
937 This variable conditionally defines the HAS_FPCLASS symbol, which
938 indicates to the C program that the fpclass() routine is available.
940 d_fpclassify (d_fpclassify.U):
941 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
942 indicates to the C program that the fpclassify() routine is available.
944 d_fpclassl (d_fpclassl.U):
945 This variable conditionally defines the HAS_FPCLASSL symbol, which
946 indicates to the C program that the fpclassl() routine is available.
948 d_fpgetround (d_fpgetround.U):
949 This variable conditionally defines HAS_FPGETROUND if fpgetround()
950 is available to get the floating point rounding mode.
952 d_fpos64_t (d_fpos64_t.U):
953 This symbol will be defined if the C compiler supports fpos64_t.
955 d_freelocale (d_newlocale.U):
956 This variable conditionally defines the HAS_FREELOCALE symbol, which
957 indicates to the C program that the freelocale() routine is available
958 to deallocates the resources associated with a locale object.
960 d_frexpl (d_frexpl.U):
961 This variable conditionally defines the HAS_FREXPL symbol, which
962 indicates to the C program that the frexpl() routine is available.
964 d_fs_data_s (d_fs_data_s.U):
965 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
966 which indicates that the struct fs_data is supported.
968 d_fseeko (d_fseeko.U):
969 This variable conditionally defines the HAS_FSEEKO symbol, which
970 indicates to the C program that the fseeko() routine is available.
972 d_fsetpos (d_fsetpos.U):
973 This variable conditionally defines HAS_FSETPOS if fsetpos() is
974 available to set the file position indicator.
976 d_fstatfs (d_fstatfs.U):
977 This variable conditionally defines the HAS_FSTATFS symbol, which
978 indicates to the C program that the fstatfs() routine is available.
980 d_fstatvfs (d_statvfs.U):
981 This variable conditionally defines the HAS_FSTATVFS symbol, which
982 indicates to the C program that the fstatvfs() routine is available.
985 This variable conditionally defines the HAS_FSYNC symbol, which
986 indicates to the C program that the fsync() routine is available.
988 d_ftello (d_ftello.U):
989 This variable conditionally defines the HAS_FTELLO symbol, which
990 indicates to the C program that the ftello() routine is available.
993 This variable conditionally defines the HAS_FTIME symbol, which indicates
994 that the ftime() routine exists. The ftime() routine is basically
995 a sub-second accuracy clock.
997 d_futimes (d_futimes.U):
998 This variable conditionally defines the HAS_FUTIMES symbol, which
999 indicates to the C program that the futimes() routine is available.
1001 d_gai_strerror (d_gai_strerror.U):
1002 This variable conditionally defines the HAS_GAI_STRERROR symbol
1003 if the gai_strerror() routine is available and can be used to
1004 translate error codes returned by getaddrinfo() into human
1007 d_Gconvert (d_gconvert.U):
1008 This variable holds what Gconvert is defined as to convert
1009 floating point numbers into strings. By default, Configure
1010 sets this macro to use the first of gconvert, gcvt, or sprintf
1011 that pass sprintf-%g-like behavior tests. If perl is using
1012 long doubles, the macro uses the first of the following
1013 functions that pass Configure's tests: qgcvt, sprintf (if
1014 Configure knows how to make sprintf format long doubles--see
1015 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
1016 The gconvert_preference and gconvert_ld_preference variables
1017 can be used to alter Configure's preferences, for doubles and
1018 long doubles, respectively. If present, they contain a
1019 space-separated list of one or more of the above function
1020 names in the order they should be tried.
1022 d_Gconvert may be set to override Configure with a platform-
1023 specific function. If this function expects a double, a
1024 different value may need to be set by the uselongdouble.cbu
1025 call-back unit so that long doubles can be formatted without
1028 d_gdbm_ndbm_h_uses_prototypes (i_ndbm.U):
1029 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1030 which indicates that the gdbm-ndbm.h include file uses real ANSI C
1031 prototypes instead of K&R style function declarations. K&R style
1032 declarations are unsupported in C++, so the include file requires
1033 special handling when using a C++ compiler and this variable is
1034 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1035 to get the same information for alternative ndbm.h include files.
1037 d_gdbmndbm_h_uses_prototypes (i_ndbm.U):
1038 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1039 which indicates that the gdbm/ndbm.h include file uses real ANSI C
1040 prototypes instead of K&R style function declarations. K&R style
1041 declarations are unsupported in C++, so the include file requires
1042 special handling when using a C++ compiler and this variable is
1043 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1044 to get the same information for alternative ndbm.h include files.
1046 d_getaddrinfo (d_getaddrinfo.U):
1047 This variable conditionally defines the HAS_GETADDRINFO symbol,
1048 which indicates to the C program that the getaddrinfo() function
1051 d_getcwd (d_getcwd.U):
1052 This variable conditionally defines the HAS_GETCWD symbol, which
1053 indicates to the C program that the getcwd() routine is available
1054 to get the current working directory.
1056 d_getespwnam (d_getespwnam.U):
1057 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
1058 available to retrieve enhanced (shadow) password entries by name.
1060 d_getfsstat (d_getfsstat.U):
1061 This variable conditionally defines the HAS_GETFSSTAT symbol, which
1062 indicates to the C program that the getfsstat() routine is available.
1064 d_getgrent (d_getgrent.U):
1065 This variable conditionally defines the HAS_GETGRENT symbol, which
1066 indicates to the C program that the getgrent() routine is available
1067 for sequential access of the group database.
1069 d_getgrent_r (d_getgrent_r.U):
1070 This variable conditionally defines the HAS_GETGRENT_R symbol,
1071 which indicates to the C program that the getgrent_r()
1072 routine is available.
1074 d_getgrgid_r (d_getgrgid_r.U):
1075 This variable conditionally defines the HAS_GETGRGID_R symbol,
1076 which indicates to the C program that the getgrgid_r()
1077 routine is available.
1079 d_getgrnam_r (d_getgrnam_r.U):
1080 This variable conditionally defines the HAS_GETGRNAM_R symbol,
1081 which indicates to the C program that the getgrnam_r()
1082 routine is available.
1084 d_getgrps (d_getgrps.U):
1085 This variable conditionally defines the HAS_GETGROUPS symbol, which
1086 indicates to the C program that the getgroups() routine is available
1087 to get the list of process groups.
1089 d_gethbyaddr (d_gethbyad.U):
1090 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
1091 indicates to the C program that the gethostbyaddr() routine is available
1092 to look up hosts by their IP addresses.
1094 d_gethbyname (d_gethbynm.U):
1095 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
1096 indicates to the C program that the gethostbyname() routine is available
1097 to look up host names in some data base or other.
1099 d_gethent (d_gethent.U):
1100 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
1101 available to look up host names in some data base or another.
1103 d_gethname (d_gethname.U):
1104 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
1105 indicates to the C program that the gethostname() routine may be
1106 used to derive the host name.
1108 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
1109 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
1110 which indicates to the C program that the gethostbyaddr_r()
1111 routine is available.
1113 d_gethostbyname_r (d_gethostbyname_r.U):
1114 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
1115 which indicates to the C program that the gethostbyname_r()
1116 routine is available.
1118 d_gethostent_r (d_gethostent_r.U):
1119 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
1120 which indicates to the C program that the gethostent_r()
1121 routine is available.
1123 d_gethostprotos (d_gethostprotos.U):
1124 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
1125 which indicates to the C program that <netdb.h> supplies
1126 prototypes for the various gethost*() functions.
1127 See also netdbtype.U for probing for various netdb types.
1129 d_getitimer (d_getitimer.U):
1130 This variable conditionally defines the HAS_GETITIMER symbol, which
1131 indicates to the C program that the getitimer() routine is available.
1133 d_getlogin (d_getlogin.U):
1134 This variable conditionally defines the HAS_GETLOGIN symbol, which
1135 indicates to the C program that the getlogin() routine is available
1136 to get the login name.
1138 d_getlogin_r (d_getlogin_r.U):
1139 This variable conditionally defines the HAS_GETLOGIN_R symbol,
1140 which indicates to the C program that the getlogin_r()
1141 routine is available.
1143 d_getmnt (d_getmnt.U):
1144 This variable conditionally defines the HAS_GETMNT symbol, which
1145 indicates to the C program that the getmnt() routine is available
1146 to retrieve one or more mount info blocks by filename.
1148 d_getmntent (d_getmntent.U):
1149 This variable conditionally defines the HAS_GETMNTENT symbol, which
1150 indicates to the C program that the getmntent() routine is available
1151 to iterate through mounted files to get their mount info.
1153 d_getnameinfo (d_getnameinfo.U):
1154 This variable conditionally defines the HAS_GETNAMEINFO symbol,
1155 which indicates to the C program that the getnameinfo() function
1158 d_getnbyaddr (d_getnbyad.U):
1159 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
1160 indicates to the C program that the getnetbyaddr() routine is available
1161 to look up networks by their IP addresses.
1163 d_getnbyname (d_getnbynm.U):
1164 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
1165 indicates to the C program that the getnetbyname() routine is available
1166 to look up networks by their names.
1168 d_getnent (d_getnent.U):
1169 This variable conditionally defines HAS_GETNETENT if getnetent() is
1170 available to look up network names in some data base or another.
1172 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
1173 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
1174 which indicates to the C program that the getnetbyaddr_r()
1175 routine is available.
1177 d_getnetbyname_r (d_getnetbyname_r.U):
1178 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
1179 which indicates to the C program that the getnetbyname_r()
1180 routine is available.
1182 d_getnetent_r (d_getnetent_r.U):
1183 This variable conditionally defines the HAS_GETNETENT_R symbol,
1184 which indicates to the C program that the getnetent_r()
1185 routine is available.
1187 d_getnetprotos (d_getnetprotos.U):
1188 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1189 which indicates to the C program that <netdb.h> supplies
1190 prototypes for the various getnet*() functions.
1191 See also netdbtype.U for probing for various netdb types.
1193 d_getpagsz (d_getpagsz.U):
1194 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1195 is available to get the system page size.
1197 d_getpbyname (d_getprotby.U):
1198 This variable conditionally defines the HAS_GETPROTOBYNAME
1199 symbol, which indicates to the C program that the
1200 getprotobyname() routine is available to look up protocols
1203 d_getpbynumber (d_getprotby.U):
1204 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1205 symbol, which indicates to the C program that the
1206 getprotobynumber() routine is available to look up protocols
1209 d_getpent (d_getpent.U):
1210 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1211 available to look up protocols in some data base or another.
1213 d_getpgid (d_getpgid.U):
1214 This variable conditionally defines the HAS_GETPGID symbol, which
1215 indicates to the C program that the getpgid(pid) function
1216 is available to get the process group id.
1218 d_getpgrp (d_getpgrp.U):
1219 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1220 available to get the current process group.
1222 d_getpgrp2 (d_getpgrp2.U):
1223 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1224 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1225 is available to get the current process group.
1227 d_getppid (d_getppid.U):
1228 This variable conditionally defines the HAS_GETPPID symbol, which
1229 indicates to the C program that the getppid() routine is available
1230 to get the parent process ID.
1232 d_getprior (d_getprior.U):
1233 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1234 is available to get a process's priority.
1236 d_getprotobyname_r (d_getprotobyname_r.U):
1237 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1238 which indicates to the C program that the getprotobyname_r()
1239 routine is available.
1241 d_getprotobynumber_r (d_getprotobynumber_r.U):
1242 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1243 which indicates to the C program that the getprotobynumber_r()
1244 routine is available.
1246 d_getprotoent_r (d_getprotoent_r.U):
1247 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1248 which indicates to the C program that the getprotoent_r()
1249 routine is available.
1251 d_getprotoprotos (d_getprotoprotos.U):
1252 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1253 which indicates to the C program that <netdb.h> supplies
1254 prototypes for the various getproto*() functions.
1255 See also netdbtype.U for probing for various netdb types.
1257 d_getprpwnam (d_getprpwnam.U):
1258 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1259 available to retrieve protected (shadow) password entries by name.
1261 d_getpwent (d_getpwent.U):
1262 This variable conditionally defines the HAS_GETPWENT symbol, which
1263 indicates to the C program that the getpwent() routine is available
1264 for sequential access of the passwd database.
1266 d_getpwent_r (d_getpwent_r.U):
1267 This variable conditionally defines the HAS_GETPWENT_R symbol,
1268 which indicates to the C program that the getpwent_r()
1269 routine is available.
1271 d_getpwnam_r (d_getpwnam_r.U):
1272 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1273 which indicates to the C program that the getpwnam_r()
1274 routine is available.
1276 d_getpwuid_r (d_getpwuid_r.U):
1277 This variable conditionally defines the HAS_GETPWUID_R symbol,
1278 which indicates to the C program that the getpwuid_r()
1279 routine is available.
1281 d_getsbyname (d_getsrvby.U):
1282 This variable conditionally defines the HAS_GETSERVBYNAME
1283 symbol, which indicates to the C program that the
1284 getservbyname() routine is available to look up services
1287 d_getsbyport (d_getsrvby.U):
1288 This variable conditionally defines the HAS_GETSERVBYPORT
1289 symbol, which indicates to the C program that the
1290 getservbyport() routine is available to look up services
1293 d_getsent (d_getsent.U):
1294 This variable conditionally defines HAS_GETSERVENT if getservent() is
1295 available to look up network services in some data base or another.
1297 d_getservbyname_r (d_getservbyname_r.U):
1298 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1299 which indicates to the C program that the getservbyname_r()
1300 routine is available.
1302 d_getservbyport_r (d_getservbyport_r.U):
1303 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1304 which indicates to the C program that the getservbyport_r()
1305 routine is available.
1307 d_getservent_r (d_getservent_r.U):
1308 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1309 which indicates to the C program that the getservent_r()
1310 routine is available.
1312 d_getservprotos (d_getservprotos.U):
1313 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1314 which indicates to the C program that <netdb.h> supplies
1315 prototypes for the various getserv*() functions.
1316 See also netdbtype.U for probing for various netdb types.
1318 d_getspnam (d_getspnam.U):
1319 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1320 available to retrieve SysV shadow password entries by name.
1322 d_getspnam_r (d_getspnam_r.U):
1323 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1324 which indicates to the C program that the getspnam_r()
1325 routine is available.
1327 d_gettimeod (d_ftime.U):
1328 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1329 indicates that the gettimeofday() system call exists (to obtain a
1330 sub-second accuracy clock). You should probably include <sys/resource.h>.
1332 d_gmtime64 (d_timefuncs64.U):
1333 This variable conditionally defines the HAS_GMTIME64 symbol, which
1334 indicates to the C program that the gmtime64 () routine is available.
1336 d_gmtime_r (d_gmtime_r.U):
1337 This variable conditionally defines the HAS_GMTIME_R symbol,
1338 which indicates to the C program that the gmtime_r()
1339 routine is available.
1341 d_gnulibc (d_gnulibc.U):
1342 Defined if we're dealing with the GNU C Library.
1344 d_grpasswd (i_grp.U):
1345 This variable conditionally defines GRPASSWD, which indicates
1346 that struct group in <grp.h> contains gr_passwd.
1348 d_hasmntopt (d_hasmntopt.U):
1349 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1350 indicates to the C program that the hasmntopt() routine is available
1351 to query the mount options of file systems.
1353 d_htonl (d_htonl.U):
1354 This variable conditionally defines HAS_HTONL if htonl() and its
1355 friends are available to do network order byte swapping.
1357 d_hypot (d_hypot.U):
1358 This variable conditionally defines HAS_HYPOT if hypot is available
1359 for numerically stable hypotenuse function.
1361 d_ilogb (d_ilogb.U):
1362 This variable conditionally defines the HAS_ILOGB symbol, which
1363 indicates to the C program that the ilogb() routine is available
1364 for extracting the exponent of double x as a signed integer.
1366 d_ilogbl (d_ilogbl.U):
1367 This variable conditionally defines the HAS_ILOGBL symbol, which
1368 indicates to the C program that the ilogbl() routine is available
1369 for extracting the exponent of long double x as a signed integer.
1370 If scalbnl is also present we can emulate frexpl.
1372 d_inc_version_list (inc_version_list.U):
1373 This variable conditionally defines PERL_INC_VERSION_LIST.
1374 It is set to undef when PERL_INC_VERSION_LIST is empty.
1376 d_inetaton (d_inetaton.U):
1377 This variable conditionally defines the HAS_INET_ATON symbol, which
1378 indicates to the C program that the inet_aton() function is available
1379 to parse IP address "dotted-quad" strings.
1381 d_inetntop (d_inetntop.U):
1382 This variable conditionally defines the HAS_INETNTOP symbol,
1383 which indicates to the C program that the inet_ntop() function
1386 d_inetpton (d_inetpton.U):
1387 This variable conditionally defines the HAS_INETPTON symbol,
1388 which indicates to the C program that the inet_pton() function
1391 d_int64_t (d_int64_t.U):
1392 This symbol will be defined if the C compiler supports int64_t.
1394 d_ip_mreq (d_socket.U):
1395 This variable conditionally defines the HAS_IP_MREQ symbol, which
1396 indicates the availability of a struct ip_mreq.
1398 d_ip_mreq_source (d_socket.U):
1399 This variable conditionally defines the HAS_IP_MREQ_SOURCE symbol,
1400 which indicates the availability of a struct ip_mreq_source.
1402 d_ipv6_mreq (d_socket.U):
1403 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
1404 indicates the availability of a struct ipv6_mreq.
1406 d_ipv6_mreq_source (d_socket.U):
1407 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE symbol,
1408 which indicates the availability of a struct ipv6_mreq_source.
1410 d_isascii (d_isascii.U):
1411 This variable conditionally defines the HAS_ISASCII constant,
1412 which indicates to the C program that isascii() is available.
1414 d_isblank (d_isblank.U):
1415 This variable conditionally defines the HAS_ISBLANK constant,
1416 which indicates to the C program that isblank() is available.
1418 d_isfinite (d_isfinite.U):
1419 This variable conditionally defines the HAS_ISFINITE symbol, which
1420 indicates to the C program that the isfinite() routine is available.
1422 d_isfinitel (d_isfinitel.U):
1423 This variable conditionally defines the HAS_ISFINITEL symbol, which
1424 indicates to the C program that the isfinitel() routine is available.
1426 d_isinf (d_isinf.U):
1427 This variable conditionally defines the HAS_ISINF symbol, which
1428 indicates to the C program that the isinf() routine is available.
1430 d_isinfl (d_isinfl.U):
1431 This variable conditionally defines the HAS_ISINFL symbol, which
1432 indicates to the C program that the isinfl() routine is available.
1434 d_isless (d_isless.U):
1435 This variable conditionally defines the HAS_ISLESS symbol, which
1436 indicates to the C program that the isless() routine is available.
1438 d_isnan (d_isnan.U):
1439 This variable conditionally defines the HAS_ISNAN symbol, which
1440 indicates to the C program that the isnan() routine is available.
1442 d_isnanl (d_isnanl.U):
1443 This variable conditionally defines the HAS_ISNANL symbol, which
1444 indicates to the C program that the isnanl() routine is available.
1446 d_isnormal (d_isnormal.U):
1447 This variable conditionally defines the HAS_ISNORMAL symbol, which
1448 indicates to the C program that the isnormal() routine is available.
1451 This variable conditionally defines the HAS_J0 symbol, which
1452 indicates to the C program that the j0() routine is available.
1455 This variable conditionally defines the HAS_J0L symbol, which
1456 indicates to the C program that the j0l() routine is available.
1458 d_killpg (d_killpg.U):
1459 This variable conditionally defines the HAS_KILLPG symbol, which
1460 indicates to the C program that the killpg() routine is available
1461 to kill process groups.
1463 d_lc_monetary_2008 (d_lc_monetary_2008.U):
1464 This variable conditionally defines HAS_LC_MONETARY_2008 if libc
1465 has the international currency locale rules from POSIX
1468 d_lchown (d_lchown.U):
1469 This variable conditionally defines the HAS_LCHOWN symbol, which
1470 indicates to the C program that the lchown() routine is available
1471 to operate on a symbolic link (instead of following the link).
1473 d_ldbl_dig (d_ldbl_dig.U):
1474 This variable conditionally defines d_ldbl_dig if this system's
1475 header files provide LDBL_DIG, which is the number of significant
1476 digits in a long double precision number.
1478 d_ldexpl (d_longdbl.U):
1479 This variable conditionally defines the HAS_LDEXPL symbol, which
1480 indicates to the C program that the ldexpl() routine is available.
1482 d_lgamma (d_lgamma.U):
1483 This variable conditionally defines the HAS_LGAMMA symbol, which
1484 indicates to the C program that the lgamma() routine is available
1485 for the log gamma function. See also d_tgamma and d_lgamma_r.
1487 d_lgamma_r (d_lgamma_r.U):
1488 This variable conditionally defines the HAS_LGAMMA_R symbol, which
1489 indicates to the C program that the lgamma_r() routine is available
1490 for the log gamma function, without using the global signgam variable.
1492 d_libm_lib_version (d_libm_lib_version.U):
1493 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1494 which indicates to the C program that math.h defines _LIB_VERSION
1495 being available in libm
1497 d_libname_unique (so.U):
1498 This variable is defined if the target system insists on unique
1499 basenames for shared library files. This is currently true on Android,
1500 false everywhere else we know of.
1501 Defaults to 'undef'.
1504 This variable conditionally defines HAS_LINK if link() is
1505 available to create hard links.
1507 d_linkat (d_fsat.U):
1508 This variable conditionally defines the HAS_LINKAT symbol, which
1509 indicates the POSIX linkat() function is available.
1511 d_llrint (d_llrint.U):
1512 This variable conditionally defines the HAS_LLRINT symbol, which
1513 indicates to the C program that the llrint() routine is available
1514 to return the long long value closest to a double (according
1515 to the current rounding mode).
1517 d_llrintl (d_llrintl.U):
1518 This variable conditionally defines the HAS_LLRINTL symbol, which
1519 indicates to the C program that the llrintl() routine is available
1520 to return the long long value closest to a long double (according
1521 to the current rounding mode).
1523 d_llround (d_llround.U):
1524 This variable conditionally defines the HAS_LLROUND symbol, which
1525 indicates to the C program that the llround() routine is available
1526 to return the long long value nearest to x.
1528 d_llroundl (d_llroundl.U):
1529 This variable conditionally defines the HAS_LLROUNDL symbol, which
1530 indicates to the C program that the llroundl() routine is available
1531 to return the long long value nearest to x away from zero.
1533 d_localtime64 (d_timefuncs64.U):
1534 This variable conditionally defines the HAS_LOCALTIME64 symbol, which
1535 indicates to the C program that the localtime64 () routine is available.
1537 d_localtime_r (d_localtime_r.U):
1538 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1539 which indicates to the C program that the localtime_r()
1540 routine is available.
1542 d_localtime_r_needs_tzset (d_localtime_r.U):
1543 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1544 symbol, which makes us call tzset before localtime_r()
1546 d_locconv (d_locconv.U):
1547 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1548 available for numeric and monetary formatting conventions.
1550 d_lockf (d_lockf.U):
1551 This variable conditionally defines HAS_LOCKF if lockf() is
1552 available to do file locking.
1554 d_log1p (d_log1p.U):
1555 This variable conditionally defines the HAS_LOG1P symbol, which
1556 indicates to the C program that the logp1() routine is available
1557 to compute log(1 + x) for values of x close to zero.
1560 This variable conditionally defines the HAS_LOG2 symbol, which
1561 indicates to the C program that the log2() routine is available
1562 to compute log base two.
1565 This variable conditionally defines the HAS_LOGB symbol, which
1566 indicates to the C program that the logb() routine is available
1567 to extract the exponent of x.
1569 d_long_double_style_ieee (d_longdbl.U):
1570 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE
1571 if the long double is any of the IEEE 754 style long doubles:
1572 LONG_DOUBLE_STYLE_IEEE_STD, LONG_DOUBLE_STYLE_IEEE_EXTENDED,
1573 LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE.
1575 d_long_double_style_ieee_doubledouble (d_longdbl.U):
1576 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE
1577 if the long double is the 128-bit IEEE 754 double-double.
1579 d_long_double_style_ieee_extended (d_longdbl.U):
1580 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_EXTENDED
1581 if the long double is the 80-bit IEEE 754 extended precision.
1582 Note that despite the 'extended' this is less than the 'std',
1583 since thisis an extension of the double precision.
1585 d_long_double_style_ieee_std (d_longdbl.U):
1586 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_STD
1587 if the long double is the 128-bit IEEE 754.
1589 d_long_double_style_vax (d_longdbl.U):
1590 This variable conditionally defines LONG_DOUBLE_STYLE_VAX
1591 if the long double is the 128-bit VAX format H.
1593 d_longdbl (d_longdbl.U):
1594 This variable conditionally defines HAS_LONG_DOUBLE if
1595 the long double type is supported.
1597 d_longlong (d_longlong.U):
1598 This variable conditionally defines HAS_LONG_LONG if
1599 the long long type is supported.
1601 d_lrint (d_lrint.U):
1602 This variable conditionally defines the HAS_LRINT symbol, which
1603 indicates to the C program that the lrint() routine is available
1604 to return the integral value closest to a double (according
1605 to the current rounding mode).
1607 d_lrintl (d_lrintl.U):
1608 This variable conditionally defines the HAS_LRINTL symbol, which
1609 indicates to the C program that the lrintl() routine is available
1610 to return the integral value closest to a long double (according
1611 to the current rounding mode).
1613 d_lround (d_lround.U):
1614 This variable conditionally defines the HAS_LROUND symbol, which
1615 indicates to the C program that the lround() routine is available
1616 to return the integral value nearest to x.
1618 d_lroundl (d_lroundl.U):
1619 This variable conditionally defines the HAS_LROUNDL symbol, which
1620 indicates to the C program that the lroundl() routine is available
1621 to return the integral value nearest to x away from zero.
1623 d_lseekproto (d_lseekproto.U):
1624 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1625 which indicates to the C program that the system provides
1626 a prototype for the lseek() function. Otherwise, it is
1627 up to the program to supply one.
1629 d_lstat (d_lstat.U):
1630 This variable conditionally defines HAS_LSTAT if lstat() is
1631 available to do file stats on symbolic links.
1633 d_madvise (d_madvise.U):
1634 This variable conditionally defines HAS_MADVISE if madvise() is
1635 available to map a file into memory.
1637 d_malloc_good_size (d_malloc_size.U):
1638 This symbol, if defined, indicates that the malloc_good_size
1639 routine is available for use.
1641 d_malloc_size (d_malloc_size.U):
1642 This symbol, if defined, indicates that the malloc_size
1643 routine is available for use.
1645 d_mblen (d_mblen.U):
1646 This variable conditionally defines the HAS_MBLEN symbol, which
1647 indicates to the C program that the mblen() routine is available
1648 to find the number of bytes in a multibye character.
1650 d_mbstowcs (d_mbstowcs.U):
1651 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1652 indicates to the C program that the mbstowcs() routine is available
1653 to convert a multibyte string into a wide character string.
1655 d_mbtowc (d_mbtowc.U):
1656 This variable conditionally defines the HAS_MBTOWC symbol, which
1657 indicates to the C program that the mbtowc() routine is available
1658 to convert multibyte to a wide character.
1660 d_memmem (d_memmem.U):
1661 This variable conditionally defines the HAS_MEMMEM symbol, which
1662 indicates to the C program that the memmem() routine is available
1663 to return a pointer to the start of the first occurance of a
1664 substring in a memory area (or NULL if not found).
1666 d_memrchr (d_memrchr.U):
1667 This variable conditionally defines the HAS_MEMRCHR symbol, which
1668 indicates to the C program that the memrchr() routine is available
1669 to return a pointer to the last occurrence of a byte in a memory
1670 area (or NULL if not found).
1672 d_mkdir (d_mkdir.U):
1673 This variable conditionally defines the HAS_MKDIR symbol, which
1674 indicates to the C program that the mkdir() routine is available
1675 to create directories..
1677 d_mkdtemp (d_mkdtemp.U):
1678 This variable conditionally defines the HAS_MKDTEMP symbol, which
1679 indicates to the C program that the mkdtemp() routine is available
1680 to exclusively create a uniquely named temporary directory.
1682 d_mkfifo (d_mkfifo.U):
1683 This variable conditionally defines the HAS_MKFIFO symbol, which
1684 indicates to the C program that the mkfifo() routine is available.
1686 d_mkstemp (d_mkstemp.U):
1687 This variable conditionally defines the HAS_MKSTEMP symbol, which
1688 indicates to the C program that the mkstemp() routine is available
1689 to exclusively create and open a uniquely named temporary file.
1691 d_mkstemps (d_mkstemps.U):
1692 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1693 indicates to the C program that the mkstemps() routine is available
1694 to exclusively create and open a uniquely named (with a suffix)
1697 d_mktime (d_mktime.U):
1698 This variable conditionally defines the HAS_MKTIME symbol, which
1699 indicates to the C program that the mktime() routine is available.
1701 d_mktime64 (d_timefuncs64.U):
1702 This variable conditionally defines the HAS_MKTIME64 symbol, which
1703 indicates to the C program that the mktime64 () routine is available.
1706 This variable conditionally defines HAS_MMAP if mmap() is
1707 available to map a file into memory.
1709 d_modfl (d_modfl.U):
1710 This variable conditionally defines the HAS_MODFL symbol, which
1711 indicates to the C program that the modfl() routine is available.
1713 d_modflproto (d_modfl.U):
1714 This symbol, if defined, indicates that the system provides
1715 a prototype for the modfl() function. Otherwise, it is up
1716 to the program to supply one. C99 says it should be
1717 long double modfl(long double, long double *);
1719 d_mprotect (d_mprotect.U):
1720 This variable conditionally defines HAS_MPROTECT if mprotect() is
1721 available to modify the access protection of a memory mapped file.
1724 This variable conditionally defines the HAS_MSG symbol, which
1725 indicates that the entire msg*(2) library is present.
1727 d_msg_ctrunc (d_socket.U):
1728 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1729 which indicates that the MSG_CTRUNC is available. #ifdef is
1730 not enough because it may be an enum, glibc has been known to do this.
1732 d_msg_dontroute (d_socket.U):
1733 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1734 which indicates that the MSG_DONTROUTE is available. #ifdef is
1735 not enough because it may be an enum, glibc has been known to do this.
1737 d_msg_oob (d_socket.U):
1738 This variable conditionally defines the HAS_MSG_OOB symbol,
1739 which indicates that the MSG_OOB is available. #ifdef is
1740 not enough because it may be an enum, glibc has been known to do this.
1742 d_msg_peek (d_socket.U):
1743 This variable conditionally defines the HAS_MSG_PEEK symbol,
1744 which indicates that the MSG_PEEK is available. #ifdef is
1745 not enough because it may be an enum, glibc has been known to do this.
1747 d_msg_proxy (d_socket.U):
1748 This variable conditionally defines the HAS_MSG_PROXY symbol,
1749 which indicates that the MSG_PROXY is available. #ifdef is
1750 not enough because it may be an enum, glibc has been known to do this.
1752 d_msgctl (d_msgctl.U):
1753 This variable conditionally defines the HAS_MSGCTL symbol, which
1754 indicates to the C program that the msgctl() routine is available.
1756 d_msgget (d_msgget.U):
1757 This variable conditionally defines the HAS_MSGGET symbol, which
1758 indicates to the C program that the msgget() routine is available.
1760 d_msghdr_s (d_msghdr_s.U):
1761 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1762 which indicates that the struct msghdr is supported.
1764 d_msgrcv (d_msgrcv.U):
1765 This variable conditionally defines the HAS_MSGRCV symbol, which
1766 indicates to the C program that the msgrcv() routine is available.
1768 d_msgsnd (d_msgsnd.U):
1769 This variable conditionally defines the HAS_MSGSND symbol, which
1770 indicates to the C program that the msgsnd() routine is available.
1772 d_msync (d_msync.U):
1773 This variable conditionally defines HAS_MSYNC if msync() is
1774 available to synchronize a mapped file.
1776 d_munmap (d_munmap.U):
1777 This variable conditionally defines HAS_MUNMAP if munmap() is
1778 available to unmap a region mapped by mmap().
1780 d_mymalloc (mallocsrc.U):
1781 This variable conditionally defines MYMALLOC in case other parts
1782 of the source want to take special action if MYMALLOC is used.
1783 This may include different sorts of profiling or error detection.
1786 This variable conditionally defines HAS_NAN if nan() is
1787 available to generate NaN.
1790 This variable conditionally defines the HAS_NDBM symbol, which
1791 indicates that both the ndbm.h include file and an appropriate ndbm
1792 library exist. Consult the different i_*ndbm variables
1793 to find out the actual include location. Sometimes, a system has the
1794 header file but not the library. This variable will only be set if
1795 the system has both.
1797 d_ndbm_h_uses_prototypes (i_ndbm.U):
1798 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1799 which indicates that the ndbm.h include file uses real ANSI C
1800 prototypes instead of K&R style function declarations. K&R style
1801 declarations are unsupported in C++, so the include file requires
1802 special handling when using a C++ compiler and this variable is
1803 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1804 to get the same information for alternative ndbm.h include files.
1806 d_nearbyint (d_nearbyint.U):
1807 This variable conditionally defines HAS_NEARBYINT if nearbyint()
1808 is available to return the integral value closest to (according to
1809 the current rounding mode) to x.
1811 d_newlocale (d_newlocale.U):
1812 This variable conditionally defines the HAS_NEWLOCALE symbol, which
1813 indicates to the C program that the newlocale() routine is available
1814 to return a new locale object or modify an existing locale object.
1816 d_nextafter (d_nextafter.U):
1817 This variable conditionally defines HAS_NEXTAFTER if nextafter()
1818 is available to return the next machine representable double from
1821 d_nexttoward (d_nexttoward.U):
1822 This variable conditionally defines HAS_NEXTTOWARD if nexttoward()
1823 is available to return the next machine representable long double from
1827 This variable conditionally defines the HAS_NICE symbol, which
1828 indicates to the C program that the nice() routine is available.
1830 d_nl_langinfo (d_nl_langinfo.U):
1831 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1832 indicates to the C program that the nl_langinfo() routine is available.
1834 d_nv_preserves_uv (perlxv.U):
1835 This variable indicates whether a variable of type nvtype
1836 can preserve all the bits a variable of type uvtype.
1838 d_nv_zero_is_allbits_zero (perlxv.U):
1839 This variable indicates whether a variable of type nvtype
1840 stores 0.0 in memory as all bits zero.
1842 d_off64_t (d_off64_t.U):
1843 This symbol will be defined if the C compiler supports off64_t.
1845 d_old_pthread_create_joinable (d_pthrattrj.U):
1846 This variable conditionally defines pthread_create_joinable.
1847 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1849 d_oldpthreads (usethreads.U):
1850 This variable conditionally defines the OLD_PTHREADS_API symbol,
1851 and indicates that Perl should be built to use the old
1852 draft POSIX threads API. This is only potentially meaningful if
1855 d_oldsock (d_socket.U):
1856 This variable conditionally defines the OLDSOCKET symbol, which
1857 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1859 d_open3 (d_open3.U):
1860 This variable conditionally defines the HAS_OPEN3 manifest constant,
1861 which indicates to the C program that the 3 argument version of
1862 the open(2) function is available.
1864 d_openat (d_fsat.U):
1865 This variable conditionally defines the HAS_OPENAT symbol, which
1866 indicates the POSIX openat() function is available.
1868 d_pathconf (d_pathconf.U):
1869 This variable conditionally defines the HAS_PATHCONF symbol, which
1870 indicates to the C program that the pathconf() routine is available
1871 to determine file-system related limits and options associated
1872 with a given filename.
1874 d_pause (d_pause.U):
1875 This variable conditionally defines the HAS_PAUSE symbol, which
1876 indicates to the C program that the pause() routine is available
1877 to suspend a process until a signal is received.
1879 d_perl_otherlibdirs (otherlibdirs.U):
1880 This variable conditionally defines PERL_OTHERLIBDIRS, which
1881 contains a colon-separated set of paths for the perl binary to
1882 include in @INC. See also otherlibdirs.
1884 d_phostname (d_gethname.U):
1885 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1886 contains the shell command which, when fed to popen(), may be
1887 used to derive the host name.
1890 This variable conditionally defines the HAS_PIPE symbol, which
1891 indicates to the C program that the pipe() routine is available
1892 to create an inter-process channel.
1895 This variable conditionally defines the HAS_POLL symbol, which
1896 indicates to the C program that the poll() routine is available
1897 to poll active file descriptors.
1899 d_portable (d_portable.U):
1900 This variable conditionally defines the PORTABLE symbol, which
1901 indicates to the C program that it should not assume that it is
1902 running on the machine it was compiled on.
1904 d_prctl (d_prctl.U):
1905 This variable conditionally defines the HAS_PRCTL symbol, which
1906 indicates to the C program that the prctl() routine is available.
1907 Note that there are at least two prctl variants: Linux and Irix.
1908 While they are somewhat similar, they are incompatible.
1910 d_prctl_set_name (d_prctl.U):
1911 This variable conditionally defines the HAS_PRCTL_SET_NAME symbol,
1912 which indicates to the C program that the prctl() routine supports
1913 the PR_SET_NAME option.
1915 d_PRId64 (quadfio.U):
1916 This variable conditionally defines the PERL_PRId64 symbol, which
1917 indicates that stdio has a symbol to print 64-bit decimal numbers.
1919 d_PRIeldbl (longdblfio.U):
1920 This variable conditionally defines the PERL_PRIfldbl symbol, which
1921 indicates that stdio has a symbol to print long doubles.
1923 d_PRIEUldbl (longdblfio.U):
1924 This variable conditionally defines the PERL_PRIfldbl symbol, which
1925 indicates that stdio has a symbol to print long doubles.
1926 The 'U' in the name is to separate this from d_PRIeldbl so that even
1927 case-blind systems can see the difference.
1929 d_PRIfldbl (longdblfio.U):
1930 This variable conditionally defines the PERL_PRIfldbl symbol, which
1931 indicates that stdio has a symbol to print long doubles.
1933 d_PRIFUldbl (longdblfio.U):
1934 This variable conditionally defines the PERL_PRIfldbl symbol, which
1935 indicates that stdio has a symbol to print long doubles.
1936 The 'U' in the name is to separate this from d_PRIfldbl so that even
1937 case-blind systems can see the difference.
1939 d_PRIgldbl (longdblfio.U):
1940 This variable conditionally defines the PERL_PRIfldbl symbol, which
1941 indicates that stdio has a symbol to print long doubles.
1943 d_PRIGUldbl (longdblfio.U):
1944 This variable conditionally defines the PERL_PRIfldbl symbol, which
1945 indicates that stdio has a symbol to print long doubles.
1946 The 'U' in the name is to separate this from d_PRIgldbl so that even
1947 case-blind systems can see the difference.
1949 d_PRIi64 (quadfio.U):
1950 This variable conditionally defines the PERL_PRIi64 symbol, which
1951 indicates that stdio has a symbol to print 64-bit decimal numbers.
1953 d_printf_format_null (d_attribut.U):
1954 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
1955 indicates the C compiler allows printf-like formats to be null.
1957 d_PRIo64 (quadfio.U):
1958 This variable conditionally defines the PERL_PRIo64 symbol, which
1959 indicates that stdio has a symbol to print 64-bit octal numbers.
1961 d_PRIu64 (quadfio.U):
1962 This variable conditionally defines the PERL_PRIu64 symbol, which
1963 indicates that stdio has a symbol to print 64-bit unsigned decimal
1966 d_PRIx64 (quadfio.U):
1967 This variable conditionally defines the PERL_PRIx64 symbol, which
1968 indicates that stdio has a symbol to print 64-bit hexadecimal numbers.
1970 d_PRIXU64 (quadfio.U):
1971 This variable conditionally defines the PERL_PRIXU64 symbol, which
1972 indicates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1973 The 'U' in the name is to separate this from d_PRIx64 so that even
1974 case-blind systems can see the difference.
1976 d_procselfexe (d_procselfexe.U):
1977 Defined if $procselfexe is symlink to the absolute
1978 pathname of the executing program.
1980 d_pseudofork (d_vfork.U):
1981 This variable conditionally defines the HAS_PSEUDOFORK symbol,
1982 which indicates that an emulation of the fork routine is available.
1984 d_pthread_atfork (d_pthread_atfork.U):
1985 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1986 which indicates to the C program that the pthread_atfork()
1987 routine is available.
1989 d_pthread_attr_setscope (d_pthread_attr_ss.U):
1990 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
1991 pthread_attr_setscope() is available to set the contention scope
1992 attribute of a thread attribute object.
1994 d_pthread_yield (d_pthread_y.U):
1995 This variable conditionally defines the HAS_PTHREAD_YIELD
1996 symbol if the pthread_yield routine is available to yield
1997 the execution of the current thread.
1999 d_ptrdiff_t (d_ptrdiff_t.U):
2000 This symbol will be defined if the C compiler supports ptrdiff_t.
2003 This variable conditionally defines PWAGE, which indicates
2004 that struct passwd contains pw_age.
2006 d_pwchange (i_pwd.U):
2007 This variable conditionally defines PWCHANGE, which indicates
2008 that struct passwd contains pw_change.
2010 d_pwclass (i_pwd.U):
2011 This variable conditionally defines PWCLASS, which indicates
2012 that struct passwd contains pw_class.
2014 d_pwcomment (i_pwd.U):
2015 This variable conditionally defines PWCOMMENT, which indicates
2016 that struct passwd contains pw_comment.
2018 d_pwexpire (i_pwd.U):
2019 This variable conditionally defines PWEXPIRE, which indicates
2020 that struct passwd contains pw_expire.
2022 d_pwgecos (i_pwd.U):
2023 This variable conditionally defines PWGECOS, which indicates
2024 that struct passwd contains pw_gecos.
2026 d_pwpasswd (i_pwd.U):
2027 This variable conditionally defines PWPASSWD, which indicates
2028 that struct passwd contains pw_passwd.
2030 d_pwquota (i_pwd.U):
2031 This variable conditionally defines PWQUOTA, which indicates
2032 that struct passwd contains pw_quota.
2034 d_qgcvt (d_qgcvt.U):
2035 This variable conditionally defines the HAS_QGCVT symbol, which
2036 indicates to the C program that the qgcvt() routine is available.
2038 d_quad (quadtype.U):
2039 This variable, if defined, tells that there's a 64-bit integer type,
2042 d_querylocale (d_newlocale.U):
2043 This variable conditionally defines the HAS_QUERYLOCALE symbol, which
2044 indicates to the C program that the querylocale() routine is available
2045 to return the name of the locale for a category mask.
2047 d_random_r (d_random_r.U):
2048 This variable conditionally defines the HAS_RANDOM_R symbol,
2049 which indicates to the C program that the random_r()
2050 routine is available.
2052 d_re_comp (d_regcmp.U):
2053 This variable conditionally defines the HAS_RECOMP symbol, which
2054 indicates to the C program that the re_comp() routine is available
2055 for regular patern matching (usally on BSD). If so, it is likely that
2058 d_readdir (d_readdir.U):
2059 This variable conditionally defines HAS_READDIR if readdir() is
2060 available to read directory entries.
2062 d_readdir64_r (d_readdir64_r.U):
2063 This variable conditionally defines the HAS_READDIR64_R symbol,
2064 which indicates to the C program that the readdir64_r()
2065 routine is available.
2067 d_readdir_r (d_readdir_r.U):
2068 This variable conditionally defines the HAS_READDIR_R symbol,
2069 which indicates to the C program that the readdir_r()
2070 routine is available.
2072 d_readlink (d_readlink.U):
2073 This variable conditionally defines the HAS_READLINK symbol, which
2074 indicates to the C program that the readlink() routine is available
2075 to read the value of a symbolic link.
2077 d_readv (d_readv.U):
2078 This variable conditionally defines the HAS_READV symbol, which
2079 indicates to the C program that the readv() routine is available.
2081 d_recvmsg (d_recvmsg.U):
2082 This variable conditionally defines the HAS_RECVMSG symbol, which
2083 indicates to the C program that the recvmsg() routine is available.
2085 d_regcmp (d_regcmp.U):
2086 This variable conditionally defines the HAS_REGCMP symbol, which
2087 indicates to the C program that the regcmp() routine is available
2088 for regular patern matching (usally on System V).
2090 d_regcomp (d_regcmp.U):
2091 This variable conditionally defines the HAS_REGCOMP symbol, which
2092 indicates to the C program that the regcomp() routine is available
2093 for regular patern matching (usally on POSIX.2 conforming systems).
2095 d_remainder (d_remainder.U):
2096 This variable conditionally defines the HAS_REMAINDER symbol, which
2097 indicates to the C program that the remainder() routine is available.
2099 d_remquo (d_remquo.U):
2100 This variable conditionally defines the HAS_REMQUO symbol, which
2101 indicates to the C program that the remquo() routine is available.
2103 d_rename (d_rename.U):
2104 This variable conditionally defines the HAS_RENAME symbol, which
2105 indicates to the C program that the rename() routine is available
2108 d_renameat (d_fsat.U):
2109 This variable conditionally defines the HAS_RENAMEAT symbol, which
2110 indicates the POSIX renameat() function is available.
2112 d_rewinddir (d_readdir.U):
2113 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
2117 This variable conditionally defines the HAS_RINT symbol, which
2118 indicates to the C program that the rint() routine is available.
2120 d_rmdir (d_rmdir.U):
2121 This variable conditionally defines HAS_RMDIR if rmdir() is
2122 available to remove directories.
2124 d_round (d_round.U):
2125 This variable conditionally defines the HAS_ROUND symbol, which
2126 indicates to the C program that the round() routine is available.
2128 d_sbrkproto (d_sbrkproto.U):
2129 This variable conditionally defines the HAS_SBRK_PROTO symbol,
2130 which indicates to the C program that the system provides
2131 a prototype for the sbrk() function. Otherwise, it is
2132 up to the program to supply one.
2134 d_scalbn (d_scalbn.U):
2135 This variable conditionally defines the HAS_SCALBN symbol, which
2136 indicates to the C program that the scalbn() routine is available.
2138 d_scalbnl (d_scalbnl.U):
2139 This variable conditionally defines the HAS_SCALBNL symbol, which
2140 indicates to the C program that the scalbnl() routine is available.
2141 If ilogbl is also present we can emulate frexpl.
2143 d_sched_yield (d_pthread_y.U):
2144 This variable conditionally defines the HAS_SCHED_YIELD
2145 symbol if the sched_yield routine is available to yield
2146 the execution of the current thread.
2148 d_scm_rights (d_socket.U):
2149 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
2150 which indicates that the SCM_RIGHTS is available. #ifdef is
2151 not enough because it may be an enum, glibc has been known to do this.
2153 d_SCNfldbl (longdblfio.U):
2154 This variable conditionally defines the PERL_PRIfldbl symbol, which
2155 indicates that stdio has a symbol to scan long doubles.
2157 d_seekdir (d_readdir.U):
2158 This variable conditionally defines HAS_SEEKDIR if seekdir() is
2161 d_select (d_select.U):
2162 This variable conditionally defines HAS_SELECT if select() is
2163 available to select active file descriptors. A <sys/time.h>
2164 inclusion may be necessary for the timeout field.
2167 This variable conditionally defines the HAS_SEM symbol, which
2168 indicates that the entire sem*(2) library is present.
2170 d_semctl (d_semctl.U):
2171 This variable conditionally defines the HAS_SEMCTL symbol, which
2172 indicates to the C program that the semctl() routine is available.
2174 d_semctl_semid_ds (d_union_semun.U):
2175 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
2176 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
2178 d_semctl_semun (d_union_semun.U):
2179 This variable conditionally defines USE_SEMCTL_SEMUN, which
2180 indicates that union semun is to be used for semctl IPC_STAT.
2182 d_semget (d_semget.U):
2183 This variable conditionally defines the HAS_SEMGET symbol, which
2184 indicates to the C program that the semget() routine is available.
2186 d_semop (d_semop.U):
2187 This variable conditionally defines the HAS_SEMOP symbol, which
2188 indicates to the C program that the semop() routine is available.
2190 d_sendmsg (d_sendmsg.U):
2191 This variable conditionally defines the HAS_SENDMSG symbol, which
2192 indicates to the C program that the sendmsg() routine is available.
2194 d_setegid (d_setegid.U):
2195 This variable conditionally defines the HAS_SETEGID symbol, which
2196 indicates to the C program that the setegid() routine is available
2197 to change the effective gid of the current program.
2199 d_seteuid (d_seteuid.U):
2200 This variable conditionally defines the HAS_SETEUID symbol, which
2201 indicates to the C program that the seteuid() routine is available
2202 to change the effective uid of the current program.
2204 d_setgrent (d_setgrent.U):
2205 This variable conditionally defines the HAS_SETGRENT symbol, which
2206 indicates to the C program that the setgrent() routine is available
2207 for initializing sequential access to the group database.
2209 d_setgrent_r (d_setgrent_r.U):
2210 This variable conditionally defines the HAS_SETGRENT_R symbol,
2211 which indicates to the C program that the setgrent_r()
2212 routine is available.
2214 d_setgrps (d_setgrps.U):
2215 This variable conditionally defines the HAS_SETGROUPS symbol, which
2216 indicates to the C program that the setgroups() routine is available
2217 to set the list of process groups.
2219 d_sethent (d_sethent.U):
2220 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
2223 d_sethostent_r (d_sethostent_r.U):
2224 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
2225 which indicates to the C program that the sethostent_r()
2226 routine is available.
2228 d_setitimer (d_setitimer.U):
2229 This variable conditionally defines the HAS_SETITIMER symbol, which
2230 indicates to the C program that the setitimer() routine is available.
2232 d_setlinebuf (d_setlnbuf.U):
2233 This variable conditionally defines the HAS_SETLINEBUF symbol, which
2234 indicates to the C program that the setlinebuf() routine is available
2235 to change stderr or stdout from block-buffered or unbuffered to a
2238 d_setlocale (d_setlocale.U):
2239 This variable conditionally defines HAS_SETLOCALE if setlocale() is
2240 available to handle locale-specific ctype implementations.
2242 d_setlocale_r (d_setlocale_r.U):
2243 This variable conditionally defines the HAS_SETLOCALE_R symbol,
2244 which indicates to the C program that the setlocale_r()
2245 routine is available.
2247 d_setnent (d_setnent.U):
2248 This variable conditionally defines HAS_SETNETENT if setnetent() is
2251 d_setnetent_r (d_setnetent_r.U):
2252 This variable conditionally defines the HAS_SETNETENT_R symbol,
2253 which indicates to the C program that the setnetent_r()
2254 routine is available.
2256 d_setpent (d_setpent.U):
2257 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
2260 d_setpgid (d_setpgid.U):
2261 This variable conditionally defines the HAS_SETPGID symbol if the
2262 setpgid(pid, gpid) function is available to set process group ID.
2264 d_setpgrp (d_setpgrp.U):
2265 This variable conditionally defines HAS_SETPGRP if setpgrp() is
2266 available to set the current process group.
2268 d_setpgrp2 (d_setpgrp2.U):
2269 This variable conditionally defines the HAS_SETPGRP2 symbol, which
2270 indicates to the C program that the setpgrp2() (as in DG/UX) routine
2271 is available to set the current process group.
2273 d_setprior (d_setprior.U):
2274 This variable conditionally defines HAS_SETPRIORITY if setpriority()
2275 is available to set a process's priority.
2277 d_setproctitle (d_setproctitle.U):
2278 This variable conditionally defines the HAS_SETPROCTITLE symbol,
2279 which indicates to the C program that the setproctitle() routine
2282 d_setprotoent_r (d_setprotoent_r.U):
2283 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
2284 which indicates to the C program that the setprotoent_r()
2285 routine is available.
2287 d_setpwent (d_setpwent.U):
2288 This variable conditionally defines the HAS_SETPWENT symbol, which
2289 indicates to the C program that the setpwent() routine is available
2290 for initializing sequential access to the passwd database.
2292 d_setpwent_r (d_setpwent_r.U):
2293 This variable conditionally defines the HAS_SETPWENT_R symbol,
2294 which indicates to the C program that the setpwent_r()
2295 routine is available.
2297 d_setregid (d_setregid.U):
2298 This variable conditionally defines HAS_SETREGID if setregid() is
2299 available to change the real and effective gid of the current
2302 d_setresgid (d_setregid.U):
2303 This variable conditionally defines HAS_SETRESGID if setresgid() is
2304 available to change the real, effective and saved gid of the current
2307 d_setresuid (d_setreuid.U):
2308 This variable conditionally defines HAS_SETREUID if setresuid() is
2309 available to change the real, effective and saved uid of the current
2312 d_setreuid (d_setreuid.U):
2313 This variable conditionally defines HAS_SETREUID if setreuid() is
2314 available to change the real and effective uid of the current
2317 d_setrgid (d_setrgid.U):
2318 This variable conditionally defines the HAS_SETRGID symbol, which
2319 indicates to the C program that the setrgid() routine is available
2320 to change the real gid of the current program.
2322 d_setruid (d_setruid.U):
2323 This variable conditionally defines the HAS_SETRUID symbol, which
2324 indicates to the C program that the setruid() routine is available
2325 to change the real uid of the current program.
2327 d_setsent (d_setsent.U):
2328 This variable conditionally defines HAS_SETSERVENT if setservent() is
2331 d_setservent_r (d_setservent_r.U):
2332 This variable conditionally defines the HAS_SETSERVENT_R symbol,
2333 which indicates to the C program that the setservent_r()
2334 routine is available.
2336 d_setsid (d_setsid.U):
2337 This variable conditionally defines HAS_SETSID if setsid() is
2338 available to set the process group ID.
2340 d_setvbuf (d_setvbuf.U):
2341 This variable conditionally defines the HAS_SETVBUF symbol, which
2342 indicates to the C program that the setvbuf() routine is available
2343 to change buffering on an open stdio stream.
2346 This variable conditionally defines the HAS_SHM symbol, which
2347 indicates that the entire shm*(2) library is present.
2349 d_shmat (d_shmat.U):
2350 This variable conditionally defines the HAS_SHMAT symbol, which
2351 indicates to the C program that the shmat() routine is available.
2353 d_shmatprototype (d_shmat.U):
2354 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
2355 symbol, which indicates that sys/shm.h has a prototype for
2358 d_shmctl (d_shmctl.U):
2359 This variable conditionally defines the HAS_SHMCTL symbol, which
2360 indicates to the C program that the shmctl() routine is available.
2362 d_shmdt (d_shmdt.U):
2363 This variable conditionally defines the HAS_SHMDT symbol, which
2364 indicates to the C program that the shmdt() routine is available.
2366 d_shmget (d_shmget.U):
2367 This variable conditionally defines the HAS_SHMGET symbol, which
2368 indicates to the C program that the shmget() routine is available.
2370 d_sigaction (d_sigaction.U):
2371 This variable conditionally defines the HAS_SIGACTION symbol, which
2372 indicates that the Vr4 sigaction() routine is available.
2374 d_siginfo_si_addr (d_siginfo_si.U):
2375 This variable conditionally defines the HAS_SIGINFO_SI_ADDR symbol,
2376 which indicates that the siginfo_t struct has the si_addr member.
2378 d_siginfo_si_band (d_siginfo_si.U):
2379 This variable conditionally defines the HAS_SIGINFO_SI_BAND symbol,
2380 which indicates that the siginfo_t struct has the si_band member.
2382 d_siginfo_si_errno (d_siginfo_si.U):
2383 This variable conditionally defines the HAS_SIGINFO_SI_ERRNO symbol,
2384 which indicates that the siginfo_t struct has the si_errno member.
2386 d_siginfo_si_fd (d_siginfo_si.U):
2387 This variable conditionally defines the HAS_SIGINFO_SI_FD symbol,
2388 which indicates that the siginfo_t struct has the si_fd member.
2390 d_siginfo_si_pid (d_siginfo_si.U):
2391 This variable conditionally defines the HAS_SIGINFO_SI_PID symbol,
2392 which indicates that the siginfo_t struct has the si_pid member.
2394 d_siginfo_si_status (d_siginfo_si.U):
2395 This variable conditionally defines the HAS_SIGINFO_SI_STATUS symbol,
2396 which indicates that the siginfo_t struct has the si_status member.
2398 d_siginfo_si_uid (d_siginfo_si.U):
2399 This variable conditionally defines the HAS_SIGINFO_SI_UID symbol,
2400 which indicates that the siginfo_t struct has the si_uid member.
2402 d_siginfo_si_value (d_siginfo_si.U):
2403 This variable conditionally defines the HAS_SIGINFO_SI_VALUE symbol,
2404 which indicates that the siginfo_t struct has the si_value member.
2406 d_signbit (d_signbit.U):
2407 This variable conditionally defines the HAS_SIGNBIT symbol, which
2408 indicates to the C program that the signbit() routine is available
2409 and safe to use with perl's intern NV type.
2411 d_sigprocmask (d_sigprocmask.U):
2412 This variable conditionally defines HAS_SIGPROCMASK
2413 if sigprocmask() is available to examine or change the signal mask
2414 of the calling process.
2416 d_sigsetjmp (d_sigsetjmp.U):
2417 This variable conditionally defines the HAS_SIGSETJMP symbol,
2418 which indicates that the sigsetjmp() routine is available to
2419 call setjmp() and optionally save the process's signal mask.
2421 d_sin6_scope_id (d_socket.U):
2422 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol, which
2423 indicates that a struct sockaddr_in6 structure has the sin6_scope_id
2426 d_sitearch (sitearch.U):
2427 This variable conditionally defines SITEARCH to hold the pathname
2428 of architecture-dependent library files for $package. If
2429 $sitearch is the same as $archlib, then this is set to undef.
2431 d_sockaddr_in6 (d_socket.U):
2432 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol, which
2433 indicates the availability of a struct sockaddr_in6.
2435 d_sockaddr_sa_len (d_socket.U):
2436 This variable conditionally defines the HAS_SOCKADDR_SA_LEN symbol,
2437 which indicates that a struct sockaddr structure has the sa_len
2440 d_sockatmark (d_sockatmark.U):
2441 This variable conditionally defines the HAS_SOCKATMARK symbol, which
2442 indicates to the C program that the sockatmark() routine is available.
2444 d_sockatmarkproto (d_sockatmarkproto.U):
2445 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
2446 which indicates to the C program that the system provides
2447 a prototype for the sockatmark() function. Otherwise, it is
2448 up to the program to supply one.
2450 d_socket (d_socket.U):
2451 This variable conditionally defines HAS_SOCKET, which indicates
2452 that the BSD socket interface is supported.
2454 d_socklen_t (d_socklen_t.U):
2455 This symbol will be defined if the C compiler supports socklen_t.
2457 d_sockpair (d_socket.U):
2458 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
2459 indicates that the BSD socketpair() is supported.
2461 d_socks5_init (d_socks5_init.U):
2462 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
2463 indicates to the C program that the socks5_init() routine is available.
2465 d_sqrtl (d_sqrtl.U):
2466 This variable conditionally defines the HAS_SQRTL symbol, which
2467 indicates to the C program that the sqrtl() routine is available.
2469 d_srand48_r (d_srand48_r.U):
2470 This variable conditionally defines the HAS_SRAND48_R symbol,
2471 which indicates to the C program that the srand48_r()
2472 routine is available.
2474 d_srandom_r (d_srandom_r.U):
2475 This variable conditionally defines the HAS_SRANDOM_R symbol,
2476 which indicates to the C program that the srandom_r()
2477 routine is available.
2479 d_sresgproto (d_sresgproto.U):
2480 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
2481 which indicates to the C program that the system provides
2482 a prototype for the setresgid() function. Otherwise, it is
2483 up to the program to supply one.
2485 d_sresuproto (d_sresuproto.U):
2486 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2487 which indicates to the C program that the system provides
2488 a prototype for the setresuid() function. Otherwise, it is
2489 up to the program to supply one.
2492 This variable conditionally defines HAS_STAT if stat() is
2493 available to get file status.
2495 d_statblks (d_statblks.U):
2496 This variable conditionally defines USE_STAT_BLOCKS
2497 if this system has a stat structure declaring
2498 st_blksize and st_blocks.
2500 d_statfs_f_flags (d_statfs_f_flags.U):
2501 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2502 symbol, which indicates to struct statfs from has f_flags member.
2503 This kind of struct statfs is coming from sys/mount.h (BSD),
2504 not from sys/statfs.h (SYSV).
2506 d_statfs_s (d_statfs_s.U):
2507 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2508 which indicates that the struct statfs is supported.
2510 d_static_inline (d_static_inline.U):
2511 This variable conditionally defines the HAS_STATIC_INLINE symbol,
2512 which indicates that the C compiler supports C99-style static
2513 inline. That is, the function can't be called from another
2516 d_statvfs (d_statvfs.U):
2517 This variable conditionally defines the HAS_STATVFS symbol, which
2518 indicates to the C program that the statvfs() routine is available.
2520 d_stdio_cnt_lval (d_stdstdio.U):
2521 This variable conditionally defines STDIO_CNT_LVALUE if the
2522 FILE_cnt macro can be used as an lvalue.
2524 d_stdio_ptr_lval (d_stdstdio.U):
2525 This variable conditionally defines STDIO_PTR_LVALUE if the
2526 FILE_ptr macro can be used as an lvalue.
2528 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2529 This symbol is defined if using the FILE_ptr macro as an lvalue
2530 to increase the pointer by n leaves File_cnt(fp) unchanged.
2532 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2533 This symbol is defined if using the FILE_ptr macro as an lvalue
2534 to increase the pointer by n has the side effect of decreasing the
2535 value of File_cnt(fp) by n.
2537 d_stdio_stream_array (stdio_streams.U):
2538 This variable tells whether there is an array holding
2541 d_stdiobase (d_stdstdio.U):
2542 This variable conditionally defines USE_STDIO_BASE if this system
2543 has a FILE structure declaring a usable _base field (or equivalent)
2546 d_stdstdio (d_stdstdio.U):
2547 This variable conditionally defines USE_STDIO_PTR if this system
2548 has a FILE structure declaring usable _ptr and _cnt fields (or
2549 equivalent) in stdio.h.
2551 d_strcoll (d_strcoll.U):
2552 This variable conditionally defines HAS_STRCOLL if strcoll() is
2553 available to compare strings using collating information.
2555 d_strerror_l (d_strerror_l.U):
2556 This variable conditionally defines the HAS_STRERROR_L symbol, which
2557 indicates to the C program that the strerror_l() routine is available
2558 to return the error message for a given errno value in a particular
2559 locale (identified by a locale_t object).
2561 d_strerror_r (d_strerror_r.U):
2562 This variable conditionally defines the HAS_STRERROR_R symbol,
2563 which indicates to the C program that the strerror_r()
2564 routine is available.
2566 d_strftime (d_strftime.U):
2567 This variable conditionally defines the HAS_STRFTIME symbol, which
2568 indicates to the C program that the strftime() routine is available.
2570 d_strlcat (d_strlcat.U):
2571 This variable conditionally defines the HAS_STRLCAT symbol, which
2572 indicates to the C program that the strlcat () routine is available.
2574 d_strlcpy (d_strlcpy.U):
2575 This variable conditionally defines the HAS_STRLCPY symbol, which
2576 indicates to the C program that the strlcpy () routine is available.
2578 d_strtod (d_strtod.U):
2579 This variable conditionally defines the HAS_STRTOD symbol, which
2580 indicates to the C program that the strtod() routine is available
2581 to provide better numeric string conversion than atof().
2583 d_strtol (d_strtol.U):
2584 This variable conditionally defines the HAS_STRTOL symbol, which
2585 indicates to the C program that the strtol() routine is available
2586 to provide better numeric string conversion than atoi() and friends.
2588 d_strtold (d_strtold.U):
2589 This variable conditionally defines the HAS_STRTOLD symbol, which
2590 indicates to the C program that the strtold() routine is available.
2592 d_strtoll (d_strtoll.U):
2593 This variable conditionally defines the HAS_STRTOLL symbol, which
2594 indicates to the C program that the strtoll() routine is available.
2596 d_strtoq (d_strtoq.U):
2597 This variable conditionally defines the HAS_STRTOQ symbol, which
2598 indicates to the C program that the strtoq() routine is available.
2600 d_strtoul (d_strtoul.U):
2601 This variable conditionally defines the HAS_STRTOUL symbol, which
2602 indicates to the C program that the strtoul() routine is available
2603 to provide conversion of strings to unsigned long.
2605 d_strtoull (d_strtoull.U):
2606 This variable conditionally defines the HAS_STRTOULL symbol, which
2607 indicates to the C program that the strtoull() routine is available.
2609 d_strtouq (d_strtouq.U):
2610 This variable conditionally defines the HAS_STRTOUQ symbol, which
2611 indicates to the C program that the strtouq() routine is available.
2613 d_strxfrm (d_strxfrm.U):
2614 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2615 available to transform strings.
2617 d_suidsafe (d_dosuid.U):
2618 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2619 if setuid scripts can be secure. This test looks in /dev/fd/.
2621 d_symlink (d_symlink.U):
2622 This variable conditionally defines the HAS_SYMLINK symbol, which
2623 indicates to the C program that the symlink() routine is available
2624 to create symbolic links.
2626 d_syscall (d_syscall.U):
2627 This variable conditionally defines HAS_SYSCALL if syscall() is
2628 available call arbitrary system calls.
2630 d_syscallproto (d_syscallproto.U):
2631 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2632 which indicates to the C program that the system provides
2633 a prototype for the syscall() function. Otherwise, it is
2634 up to the program to supply one.
2636 d_sysconf (d_sysconf.U):
2637 This variable conditionally defines the HAS_SYSCONF symbol, which
2638 indicates to the C program that the sysconf() routine is available
2639 to determine system related limits and options.
2641 d_sysernlst (d_strerror.U):
2642 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2643 is available to translate error numbers to the symbolic name.
2645 d_syserrlst (d_strerror.U):
2646 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2647 available to translate error numbers to strings.
2649 d_system (d_system.U):
2650 This variable conditionally defines HAS_SYSTEM if system() is
2651 available to issue a shell command.
2653 d_tcgetpgrp (d_tcgtpgrp.U):
2654 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2655 indicates to the C program that the tcgetpgrp() routine is available.
2656 to get foreground process group ID.
2658 d_tcsetpgrp (d_tcstpgrp.U):
2659 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2660 indicates to the C program that the tcsetpgrp() routine is available
2661 to set foreground process group ID.
2663 d_telldir (d_readdir.U):
2664 This variable conditionally defines HAS_TELLDIR if telldir() is
2667 d_telldirproto (d_telldirproto.U):
2668 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2669 which indicates to the C program that the system provides
2670 a prototype for the telldir() function. Otherwise, it is
2671 up to the program to supply one.
2673 d_tgamma (d_tgamma.U):
2674 This variable conditionally defines the HAS_TGAMMA symbol, which
2675 indicates to the C program that the tgamma() routine is available
2676 for the gamma function. See also d_lgamma.
2679 This variable conditionally defines the HAS_TIME symbol, which indicates
2680 that the time() routine exists. The time() routine is normally
2681 provided on UNIX systems.
2683 d_timegm (d_timegm.U):
2684 This variable conditionally defines the HAS_TIMEGM symbol, which
2685 indicates to the C program that the timegm () routine is available.
2687 d_times (d_times.U):
2688 This variable conditionally defines the HAS_TIMES symbol, which indicates
2689 that the times() routine exists. The times() routine is normally
2690 provided on UNIX systems. You may have to include <sys/times.h>.
2692 d_tm_tm_gmtoff (i_time.U):
2693 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2694 indicates to the C program that the struct tm has the tm_gmtoff field.
2696 d_tm_tm_zone (i_time.U):
2697 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2698 indicates to the C program that the struct tm has the tm_zone field.
2700 d_tmpnam_r (d_tmpnam_r.U):
2701 This variable conditionally defines the HAS_TMPNAM_R symbol,
2702 which indicates to the C program that the tmpnam_r()
2703 routine is available.
2705 d_trunc (d_trunc.U):
2706 This variable conditionally defines the HAS_TRUNC symbol, which
2707 indicates to the C program that the trunc() routine is available
2708 to round doubles towards zero.
2710 d_truncate (d_truncate.U):
2711 This variable conditionally defines HAS_TRUNCATE if truncate() is
2712 available to truncate files.
2714 d_truncl (d_truncl.U):
2715 This variable conditionally defines the HAS_TRUNCL symbol, which
2716 indicates to the C program that the truncl() routine is available
2717 to round long doubles towards zero. If copysignl is also present,
2718 we can emulate modfl.
2720 d_ttyname_r (d_ttyname_r.U):
2721 This variable conditionally defines the HAS_TTYNAME_R symbol,
2722 which indicates to the C program that the ttyname_r()
2723 routine is available.
2725 d_tzname (d_tzname.U):
2726 This variable conditionally defines HAS_TZNAME if tzname[] is
2727 available to access timezone names.
2729 d_u32align (d_u32align.U):
2730 This variable tells whether you must access character data
2731 through U32-aligned pointers.
2733 d_ualarm (d_ualarm.U):
2734 This variable conditionally defines the HAS_UALARM symbol, which
2735 indicates to the C program that the ualarm() routine is available.
2737 d_umask (d_umask.U):
2738 This variable conditionally defines the HAS_UMASK symbol, which
2739 indicates to the C program that the umask() routine is available.
2740 to set and get the value of the file creation mask.
2742 d_uname (d_gethname.U):
2743 This variable conditionally defines the HAS_UNAME symbol, which
2744 indicates to the C program that the uname() routine may be
2745 used to derive the host name.
2747 d_union_semun (d_union_semun.U):
2748 This variable conditionally defines HAS_UNION_SEMUN if the
2749 union semun is defined by including <sys/sem.h>.
2751 d_unlinkat (d_fsat.U):
2752 This variable conditionally defines the HAS_UNLINKAT symbol, which
2753 indicates the POSIX unlinkat() function isavailable.
2755 d_unordered (d_unordered.U):
2756 This variable conditionally defines the HAS_UNORDERED symbol, which
2757 indicates to the C program that the unordered() routine is available.
2759 d_unsetenv (d_unsetenv.U):
2760 This variable conditionally defines the HAS_UNSETENV symbol, which
2761 indicates to the C program that the unsetenv () routine is available.
2763 d_uselocale (d_newlocale.U):
2764 This variable conditionally defines the HAS_USELOCALE symbol, which
2765 indicates to the C program that the uselocale() routine is available
2766 to set the current locale for the calling thread.
2768 d_usleep (d_usleep.U):
2769 This variable conditionally defines HAS_USLEEP if usleep() is
2770 available to do high granularity sleeps.
2772 d_usleepproto (d_usleepproto.U):
2773 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2774 which indicates to the C program that the system provides
2775 a prototype for the usleep() function. Otherwise, it is
2776 up to the program to supply one.
2778 d_ustat (d_ustat.U):
2779 This variable conditionally defines HAS_USTAT if ustat() is
2780 available to query file system statistics by dev_t.
2782 d_vendorarch (vendorarch.U):
2783 This variable conditionally defined PERL_VENDORARCH.
2785 d_vendorbin (vendorbin.U):
2786 This variable conditionally defines PERL_VENDORBIN.
2788 d_vendorlib (vendorlib.U):
2789 This variable conditionally defines PERL_VENDORLIB.
2791 d_vendorscript (vendorscript.U):
2792 This variable conditionally defines PERL_VENDORSCRIPT.
2794 d_vfork (d_vfork.U):
2795 This variable conditionally defines the HAS_VFORK symbol, which
2796 indicates the vfork() routine is available.
2798 d_void_closedir (d_closedir.U):
2799 This variable conditionally defines VOID_CLOSEDIR if closedir()
2800 does not return a value.
2802 d_voidsig (d_voidsig.U):
2803 This variable conditionally defines VOIDSIG if this system
2804 declares "void (*signal(...))()" in signal.h. The old way was to
2805 declare it as "int (*signal(...))()".
2807 d_voidtty (i_sysioctl.U):
2808 This variable conditionally defines USE_IOCNOTTY to indicate that the
2809 ioctl() call with TIOCNOTTY should be used to void tty association.
2810 Otherwise (on USG probably), it is enough to close the standard file
2811 descriptors and do a setpgrp().
2813 d_wait4 (d_wait4.U):
2814 This variable conditionally defines the HAS_WAIT4 symbol, which
2815 indicates the wait4() routine is available.
2817 d_waitpid (d_waitpid.U):
2818 This variable conditionally defines HAS_WAITPID if waitpid() is
2819 available to wait for child process.
2821 d_wcscmp (d_wcscmp.U):
2822 This variable conditionally defines the HAS_WCSCMP symbol if the
2823 wcscmp() routine is available and can be used to compare wide
2826 d_wcstombs (d_wcstombs.U):
2827 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2828 indicates to the C program that the wcstombs() routine is available
2829 to convert wide character strings to multibyte strings.
2831 d_wcsxfrm (d_wcsxfrm.U):
2832 This variable conditionally defines the HAS_WCSXFRM symbol if the
2833 wcsxfrm() routine is available and can be used to compare wide
2836 d_wctomb (d_wctomb.U):
2837 This variable conditionally defines the HAS_WCTOMB symbol, which
2838 indicates to the C program that the wctomb() routine is available
2839 to convert a wide character to a multibyte.
2841 d_writev (d_writev.U):
2842 This variable conditionally defines the HAS_WRITEV symbol, which
2843 indicates to the C program that the writev() routine is available.
2846 This variable conditionally defines the symbol XENIX, which alerts
2847 the C program that it runs under Xenix.
2850 This variable is used internally by Configure to determine the
2851 full pathname (if any) of the date program. After Configure runs,
2852 the value is reset to a plain "date" and is not useful.
2854 db_hashtype (i_db.U):
2855 This variable contains the type of the hash structure element
2856 in the <db.h> header file. In older versions of DB, it was
2857 int, while in newer ones it is u_int32_t.
2859 db_prefixtype (i_db.U):
2860 This variable contains the type of the prefix structure element
2861 in the <db.h> header file. In older versions of DB, it was
2862 int, while in newer ones it is size_t.
2864 db_version_major (i_db.U):
2865 This variable contains the major version number of
2866 Berkeley DB found in the <db.h> header file.
2868 db_version_minor (i_db.U):
2869 This variable contains the minor version number of
2870 Berkeley DB found in the <db.h> header file.
2871 For DB version 1 this is always 0.
2873 db_version_patch (i_db.U):
2874 This variable contains the patch version number of
2875 Berkeley DB found in the <db.h> header file.
2876 For DB version 1 this is always 0.
2878 default_inc_excludes_dot (defaultincdot.U):
2879 When defined, remove the legacy '.' from @INC
2881 direntrytype (i_dirent.U):
2882 This symbol is set to 'struct direct' or 'struct dirent' depending on
2883 whether dirent is available or not. You should use this pseudo type to
2884 portably declare your directory entries.
2887 This variable contains the extension that is to be used for the
2888 dynamically loaded modules that perl generates.
2891 This variable contains the name of the dynamic loading file that
2892 will be used with the package.
2894 doubleinfbytes (infnan.U):
2895 This variable contains comma-separated list of hexadecimal bytes
2896 for the double precision infinity.
2898 doublekind (longdblfio.U):
2899 This variable, if defined, encodes the type of a double:
2900 1 = IEEE 754 32-bit little endian,
2901 2 = IEEE 754 32-bit big endian,
2902 3 = IEEE 754 64-bit little endian,
2903 4 = IEEE 754 64-bit big endian,
2904 5 = IEEE 754 128-bit little endian,
2905 6 = IEEE 754 128-bit big endian,
2906 7 = IEEE 754 64-bit mixed endian le-be,
2907 8 = IEEE 754 64-bit mixed endian be-le,
2908 9 = VAX 32bit little endian F float format
2909 10 = VAX 64bit little endian D float format
2910 11 = VAX 64bit little endian G float format
2911 12 = IBM 32bit format
2912 13 = IBM 64bit format
2913 14 = Cray 64bit format
2914 -1 = unknown format.
2916 doublemantbits (mantbits.U):
2917 This symbol, if defined, tells how many mantissa bits
2918 there are in double precision floating point format.
2919 Note that this is usually DBL_MANT_DIG minus one, since
2920 with the standard IEEE 754 formats DBL_MANT_DIG includes
2921 the implicit bit which doesn't really exist.
2923 doublenanbytes (infnan.U):
2924 This variable contains comma-separated list of hexadecimal bytes
2925 for the double precision not-a-number.
2927 doublesize (doublesize.U):
2928 This variable contains the value of the DOUBLESIZE symbol, which
2929 indicates to the C program how many bytes there are in a double.
2931 drand01 (randfunc.U):
2932 Indicates the macro to be used to generate normalized
2933 random numbers. Uses randfunc, often divided by
2934 (double) (((unsigned long) 1 << randbits)) in order to
2935 normalize the result.
2936 In C programs, the macro 'Drand01' is mapped to drand01.
2938 drand48_r_proto (d_drand48_r.U):
2939 This variable encodes the prototype of drand48_r.
2940 It is zero if d_drand48_r is undef, and one of the
2941 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2944 dtrace (usedtrace.U):
2945 This variable holds the location of the dtrace executable.
2947 dtraceobject (dtraceobject.U):
2948 Whether we need to build an object file with the dtrace tool.
2950 dtracexnolibs (dtraceobject.U):
2951 Whether dtrace accepts -xnolibs. If available we call dtrace -h
2952 and dtrace -G with -xnolibs to allow dtrace to run in a jail on
2955 dynamic_ext (Extensions.U):
2956 This variable holds a list of XS extension files we want to
2957 link dynamically into the package. It is used by Makefile.
2959 eagain (nblock_io.U):
2960 This variable bears the symbolic errno code set by read() when no
2961 data is present on the file and non-blocking I/O was enabled (otherwise,
2962 read() blocks naturally).
2965 This variable conditionally defines EBCDIC if this
2966 system uses EBCDIC encoding.
2969 This variable is used internally by Configure to determine the
2970 full pathname (if any) of the echo program. After Configure runs,
2971 the value is reset to a plain "echo" and is not useful.
2974 This variable is used internally by Configure to determine the
2975 full pathname (if any) of the egrep program. After Configure runs,
2976 the value is reset to a plain "egrep" and is not useful.
2979 This variable is defined but not used by Configure.
2980 The value is the empty string and is not useful.
2982 endgrent_r_proto (d_endgrent_r.U):
2983 This variable encodes the prototype of endgrent_r.
2984 It is zero if d_endgrent_r is undef, and one of the
2985 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2988 endhostent_r_proto (d_endhostent_r.U):
2989 This variable encodes the prototype of endhostent_r.
2990 It is zero if d_endhostent_r is undef, and one of the
2991 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2994 endnetent_r_proto (d_endnetent_r.U):
2995 This variable encodes the prototype of endnetent_r.
2996 It is zero if d_endnetent_r is undef, and one of the
2997 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
3000 endprotoent_r_proto (d_endprotoent_r.U):
3001 This variable encodes the prototype of endprotoent_r.
3002 It is zero if d_endprotoent_r is undef, and one of the
3003 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
3006 endpwent_r_proto (d_endpwent_r.U):
3007 This variable encodes the prototype of endpwent_r.
3008 It is zero if d_endpwent_r is undef, and one of the
3009 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
3012 endservent_r_proto (d_endservent_r.U):
3013 This variable encodes the prototype of endservent_r.
3014 It is zero if d_endservent_r is undef, and one of the
3015 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
3019 When running under Eunice this variable contains a command which will
3020 convert a shell script to the proper form of text file for it to be
3021 executable by the shell. On other systems it is a no-op.
3024 This is an old synonym for _exe.
3027 This variable is used internally by Configure to determine the
3028 full pathname (if any) of the expr program. After Configure runs,
3029 the value is reset to a plain "expr" and is not useful.
3031 extensions (Extensions.U):
3032 This variable holds a list of all extension files (both XS and
3033 non-xs) installed with the package. It is propagated to Config.pm
3034 and is typically used to test whether a particular extension
3038 ANSI C requires 'extern' where C++ requires 'extern "C"'. This
3039 variable can be used in Configure to do the right thing.
3042 This variable holds a list of extra modules to install.
3044 fflushall (fflushall.U):
3045 This symbol, if defined, tells that to flush
3046 all pending stdio output one must loop through all
3047 the stdio file handles stored in an array and fflush them.
3048 Note that if fflushNULL is defined, fflushall will not
3049 even be probed for and will be left undefined.
3051 fflushNULL (fflushall.U):
3052 This symbol, if defined, tells that fflush(NULL) correctly
3053 flushes all pending stdio output without side effects. In
3054 particular, on some platforms calling fflush(NULL) *still*
3055 corrupts STDIN if it is a pipe.
3058 This variable is defined but not used by Configure.
3059 The value is the empty string and is not useful.
3061 firstmakefile (Unix.U):
3062 This variable defines the first file searched by make. On unix,
3063 it is makefile (then Makefile). On case-insensitive systems,
3064 it might be something else. This is only used to deal with
3065 convoluted make depend tricks.
3068 This variable is defined but not used by Configure.
3069 The value is the empty string and is not useful.
3071 fpossize (fpossize.U):
3072 This variable contains the size of a fpostype in bytes.
3074 fpostype (fpostype.U):
3075 This variable defines Fpos_t to be something like fpos_t, long,
3076 uint, or whatever type is used to declare file positions in libc.
3078 freetype (mallocsrc.U):
3079 This variable contains the return type of free(). It is usually
3080 void, but occasionally int.
3083 This variable contains the command used by Configure
3084 to copy files from the target host. Useful and available
3085 only during Perl build.
3086 The string ':' if not cross-compiling.
3089 This variable contains the full pathname to 'ar', whether or
3090 not the user has specified 'portability'. This is only used
3094 This variable contains the full pathname to 'csh', whether or
3095 not the user has specified 'portability'. This is only used
3096 in the compiled C program, and we assume that all systems which
3097 can share this executable will have the same full pathname to
3100 full_sed (Loc_sed.U):
3101 This variable contains the full pathname to 'sed', whether or
3102 not the user has specified 'portability'. This is only used
3103 in the compiled C program, and we assume that all systems which
3104 can share this executable will have the same full pathname to
3107 gccansipedantic (gccvers.U):
3108 If GNU cc (gcc) is used, this variable will enable (if set) the
3109 -ansi and -pedantic ccflags for building core files (through
3110 cflags script). (See Porting/pumpkin.pod for full description).
3112 gccosandvers (gccvers.U):
3113 If GNU cc (gcc) is used, this variable holds the operating system
3114 and version used to compile gcc. It is set to '' if not gcc,
3115 or if nothing useful can be parsed as the os version.
3117 gccversion (gccvers.U):
3118 If GNU cc (gcc) is used, this variable holds '1' or '2' to
3119 indicate whether the compiler is version 1 or 2. This is used in
3120 setting some of the default cflags. It is set to '' if not gcc.
3122 getgrent_r_proto (d_getgrent_r.U):
3123 This variable encodes the prototype of getgrent_r.
3124 It is zero if d_getgrent_r is undef, and one of the
3125 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
3128 getgrgid_r_proto (d_getgrgid_r.U):
3129 This variable encodes the prototype of getgrgid_r.
3130 It is zero if d_getgrgid_r is undef, and one of the
3131 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
3134 getgrnam_r_proto (d_getgrnam_r.U):
3135 This variable encodes the prototype of getgrnam_r.
3136 It is zero if d_getgrnam_r is undef, and one of the
3137 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
3140 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
3141 This variable encodes the prototype of gethostbyaddr_r.
3142 It is zero if d_gethostbyaddr_r is undef, and one of the
3143 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
3146 gethostbyname_r_proto (d_gethostbyname_r.U):
3147 This variable encodes the prototype of gethostbyname_r.
3148 It is zero if d_gethostbyname_r is undef, and one of the
3149 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
3152 gethostent_r_proto (d_gethostent_r.U):
3153 This variable encodes the prototype of gethostent_r.
3154 It is zero if d_gethostent_r is undef, and one of the
3155 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
3158 getlogin_r_proto (d_getlogin_r.U):
3159 This variable encodes the prototype of getlogin_r.
3160 It is zero if d_getlogin_r is undef, and one of the
3161 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
3164 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
3165 This variable encodes the prototype of getnetbyaddr_r.
3166 It is zero if d_getnetbyaddr_r is undef, and one of the
3167 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
3170 getnetbyname_r_proto (d_getnetbyname_r.U):
3171 This variable encodes the prototype of getnetbyname_r.
3172 It is zero if d_getnetbyname_r is undef, and one of the
3173 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
3176 getnetent_r_proto (d_getnetent_r.U):
3177 This variable encodes the prototype of getnetent_r.
3178 It is zero if d_getnetent_r is undef, and one of the
3179 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
3182 getprotobyname_r_proto (d_getprotobyname_r.U):
3183 This variable encodes the prototype of getprotobyname_r.
3184 It is zero if d_getprotobyname_r is undef, and one of the
3185 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
3188 getprotobynumber_r_proto (d_getprotobynumber_r.U):
3189 This variable encodes the prototype of getprotobynumber_r.
3190 It is zero if d_getprotobynumber_r is undef, and one of the
3191 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
3194 getprotoent_r_proto (d_getprotoent_r.U):
3195 This variable encodes the prototype of getprotoent_r.
3196 It is zero if d_getprotoent_r is undef, and one of the
3197 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
3200 getpwent_r_proto (d_getpwent_r.U):
3201 This variable encodes the prototype of getpwent_r.
3202 It is zero if d_getpwent_r is undef, and one of the
3203 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
3206 getpwnam_r_proto (d_getpwnam_r.U):
3207 This variable encodes the prototype of getpwnam_r.
3208 It is zero if d_getpwnam_r is undef, and one of the
3209 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
3212 getpwuid_r_proto (d_getpwuid_r.U):
3213 This variable encodes the prototype of getpwuid_r.
3214 It is zero if d_getpwuid_r is undef, and one of the
3215 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
3218 getservbyname_r_proto (d_getservbyname_r.U):
3219 This variable encodes the prototype of getservbyname_r.
3220 It is zero if d_getservbyname_r is undef, and one of the
3221 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
3224 getservbyport_r_proto (d_getservbyport_r.U):
3225 This variable encodes the prototype of getservbyport_r.
3226 It is zero if d_getservbyport_r is undef, and one of the
3227 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
3230 getservent_r_proto (d_getservent_r.U):
3231 This variable encodes the prototype of getservent_r.
3232 It is zero if d_getservent_r is undef, and one of the
3233 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
3236 getspnam_r_proto (d_getspnam_r.U):
3237 This variable encodes the prototype of getspnam_r.
3238 It is zero if d_getspnam_r is undef, and one of the
3239 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
3243 This variable contains the format string used for printing a Gid_t.
3245 gidsign (gidsign.U):
3246 This variable contains the signedness of a gidtype.
3247 1 for unsigned, -1 for signed.
3249 gidsize (gidsize.U):
3250 This variable contains the size of a gidtype in bytes.
3252 gidtype (gidtype.U):
3253 This variable defines Gid_t to be something like gid_t, int,
3254 ushort, or whatever type is used to declare the return type
3255 of getgid(). Typically, it is the type of group ids in the kernel.
3258 This variable holds the general path (space-separated) used to
3259 find libraries. It may contain directories that do not exist on
3260 this platform, libpth is the cleaned-up version.
3263 This variable is used internally by Configure to determine the
3264 full pathname (if any) of the gmake program. After Configure runs,
3265 the value is reset to a plain "gmake" and is not useful.
3267 gmtime_r_proto (d_gmtime_r.U):
3268 This variable encodes the prototype of gmtime_r.
3269 It is zero if d_gmtime_r is undef, and one of the
3270 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
3273 gnulibc_version (d_gnulibc.U):
3274 This variable contains the version number of the GNU C library.
3275 It is usually something like '2.2.5'. It is a plain '' if this
3276 is not the GNU C library, or if the version is unknown.
3279 This variable is used internally by Configure to determine the
3280 full pathname (if any) of the grep program. After Configure runs,
3281 the value is reset to a plain "grep" and is not useful.
3284 This variable contains a command that produces the text of the
3285 /etc/group file. This is normally "cat /etc/group", but can be
3286 "ypcat group" when NIS is used.
3287 On some systems, such as os390, there may be no equivalent
3288 command, in which case this variable is unset.
3290 groupstype (groupstype.U):
3291 This variable defines Groups_t to be something like gid_t, int,
3292 ushort, or whatever type is used for the second argument to
3293 getgroups() and setgroups(). Usually, this is the same as
3294 gidtype (gid_t), but sometimes it isn't.
3297 This variable is used internally by Configure to determine the
3298 full pathname (if any) of the gzip program. After Configure runs,
3299 the value is reset to a plain "gzip" and is not useful.
3301 h_fcntl (h_fcntl.U):
3302 This is variable gets set in various places to tell i_fcntl that
3303 <fcntl.h> should be included.
3305 h_sysfile (h_sysfile.U):
3306 This is variable gets set in various places to tell i_sys_file that
3307 <sys/file.h> should be included.
3310 Gives the type of hints used for previous answers. May be one of
3311 "default", "recommended" or "previous".
3314 This variable contains a command that produces the text of the
3315 /etc/hosts file. This is normally "cat /etc/hosts", but can be
3316 "ypcat hosts" when NIS is used.
3317 On some systems, such as os390, there may be no equivalent
3318 command, in which case this variable is unset.
3320 hostgenerate (Cross.U):
3321 This variable contains the path to a generate_uudmap binary that
3322 can be run on the host OS when cross-compiling. Useful and
3323 available only during Perl build.
3324 Empty string '' if not cross-compiling.
3326 hostosname (Cross.U):
3327 This variable contains the original value of '$^O' for hostperl
3328 when cross-compiling. This is useful to pick the proper tools
3329 when running build code in the host.
3330 Empty string '' if not cross-compiling.
3333 This variable contains the path to a miniperl binary that can be
3334 run on the host OS when cross-compiling. Useful and available only
3336 Empty string '' if not cross-compiling.
3338 html1dir (html1dir.U):
3339 This variable contains the name of the directory in which html
3340 source pages are to be put. This directory is for pages
3341 that describe whole programs, not libraries or modules. It
3342 is intended to correspond roughly to section 1 of the Unix
3345 html1direxp (html1dir.U):
3346 This variable is the same as the html1dir variable, but is filename
3347 expanded at configuration time, for convenient use in makefiles.
3349 html3dir (html3dir.U):
3350 This variable contains the name of the directory in which html
3351 source pages are to be put. This directory is for pages
3352 that describe libraries or modules. It is intended to
3353 correspond roughly to section 3 of the Unix manuals.
3355 html3direxp (html3dir.U):
3356 This variable is the same as the html3dir variable, but is filename
3357 expanded at configuration time, for convenient use in makefiles.
3360 This variable is the size of an I16 in bytes.
3363 This variable contains the C type used for Perl's I16.
3366 This variable is the size of an I32 in bytes.
3369 This variable contains the C type used for Perl's I32.
3372 This variable is the size of an I64 in bytes.
3375 This variable contains the C type used for Perl's I64.
3378 This variable is the size of an I8 in bytes.
3381 This variable contains the C type used for Perl's I8.
3383 i_arpainet (i_arpainet.U):
3384 This variable conditionally defines the I_ARPA_INET symbol,
3385 and indicates whether a C program should include <arpa/inet.h>.
3388 This variable conditionally defines the I_BFD symbol, and
3389 indicates whether a C program can include <bfd.h>.
3391 i_bsdioctl (i_sysioctl.U):
3392 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
3393 indicates to the C program that <sys/bsdioctl.h> exists and should
3396 i_crypt (i_crypt.U):
3397 This variable conditionally defines the I_CRYPT symbol, and indicates
3398 whether a C program should include <crypt.h>.
3401 This variable conditionally defines the I_DB symbol, and indicates
3402 whether a C program may include Berkeley's DB include file <db.h>.
3405 This variable conditionally defines the I_DBM symbol, which
3406 indicates to the C program that <dbm.h> exists and should
3409 i_dirent (i_dirent.U):
3410 This variable conditionally defines I_DIRENT, which indicates
3411 to the C program that it should include <dirent.h>.
3413 i_dlfcn (i_dlfcn.U):
3414 This variable conditionally defines the I_DLFCN symbol, which
3415 indicates to the C program that <dlfcn.h> exists and should
3418 i_execinfo (i_execinfo.U):
3419 This variable conditionally defines the I_EXECINFO symbol, and indicates
3420 whether a C program may include <execinfo.h>, for backtrace() support.
3422 i_fcntl (i_fcntl.U):
3423 This variable controls the value of I_FCNTL (which tells
3424 the C program to include <fcntl.h>).
3427 This variable conditionally defines the I_FENV symbol, which
3428 indicates to the C program that <fenv.h> exists and should
3432 This variable conditionally defines the I_FP symbol, and indicates
3433 whether a C program should include <fp.h>.
3435 i_fp_class (i_fp_class.U):
3436 This variable conditionally defines the I_FP_CLASS symbol, and indicates
3437 whether a C program should include <fp_class.h>.
3440 This variable conditionally defines the I_GDBM symbol, which
3441 indicates to the C program that <gdbm.h> exists and should
3444 i_gdbm_ndbm (i_ndbm.U):
3445 This variable conditionally defines the I_GDBM_NDBM symbol, which
3446 indicates to the C program that <gdbm-ndbm.h> exists and should
3447 be included. This is the location of the ndbm.h compatibility file
3450 i_gdbmndbm (i_ndbm.U):
3451 This variable conditionally defines the I_GDBMNDBM symbol, which
3452 indicates to the C program that <gdbm/ndbm.h> exists and should
3453 be included. This was the location of the ndbm.h compatibility file
3457 This variable conditionally defines the I_GRP symbol, and indicates
3458 whether a C program should include <grp.h>.
3460 i_ieeefp (i_ieeefp.U):
3461 This variable conditionally defines the I_IEEEFP symbol, and indicates
3462 whether a C program should include <ieeefp.h>.
3464 i_inttypes (i_inttypes.U):
3465 This variable conditionally defines the I_INTTYPES symbol,
3466 and indicates whether a C program should include <inttypes.h>.
3468 i_langinfo (i_langinfo.U):
3469 This variable conditionally defines the I_LANGINFO symbol,
3470 and indicates whether a C program should include <langinfo.h>.
3472 i_libutil (i_libutil.U):
3473 This variable conditionally defines the I_LIBUTIL symbol, and indicates
3474 whether a C program should include <libutil.h>.
3476 i_locale (i_locale.U):
3477 This variable conditionally defines the I_LOCALE symbol,
3478 and indicates whether a C program should include <locale.h>.
3480 i_machcthr (i_machcthr.U):
3481 This variable conditionally defines the I_MACH_CTHREADS symbol,
3482 and indicates whether a C program should include <mach/cthreads.h>.
3484 i_malloc (i_malloc.U):
3485 This variable conditionally defines the I_MALLOC symbol, and indicates
3486 whether a C program should include <malloc.h>.
3488 i_mallocmalloc (i_mallocmalloc.U):
3489 This variable conditionally defines the I_MALLOCMALLOC symbol,
3490 and indicates whether a C program should include <malloc/malloc.h>.
3492 i_memory (i_memory.U):
3493 This variable conditionally defines the I_MEMORY symbol, and indicates
3494 whether a C program should include <memory.h>.
3496 i_mntent (i_mntent.U):
3497 This variable conditionally defines the I_MNTENT symbol, and indicates
3498 whether a C program should include <mntent.h>.
3501 This variable conditionally defines the I_NDBM symbol, which
3502 indicates to the C program that <ndbm.h> exists and should
3505 i_netdb (i_netdb.U):
3506 This variable conditionally defines the I_NETDB symbol, and indicates
3507 whether a C program should include <netdb.h>.
3509 i_neterrno (i_neterrno.U):
3510 This variable conditionally defines the I_NET_ERRNO symbol, which
3511 indicates to the C program that <net/errno.h> exists and should
3514 i_netinettcp (i_netinettcp.U):
3515 This variable conditionally defines the I_NETINET_TCP symbol,
3516 and indicates whether a C program should include <netinet/tcp.h>.
3519 This variable conditionally defines I_NETINET_IN, which indicates
3520 to the C program that it should include <netinet/in.h>. Otherwise,
3521 you may try <sys/in.h>.
3524 This variable conditionally defines the I_POLL symbol, and indicates
3525 whether a C program should include <poll.h>.
3528 This variable conditionally defines the I_PROT symbol, and indicates
3529 whether a C program should include <prot.h>.
3531 i_pthread (i_pthread.U):
3532 This variable conditionally defines the I_PTHREAD symbol,
3533 and indicates whether a C program should include <pthread.h>.
3536 This variable conditionally defines I_PWD, which indicates
3537 to the C program that it should include <pwd.h>.
3539 i_quadmath (i_quadmath.U):
3540 This variable conditionally defines I_QUADMATH, which indicates
3541 to the C program that it should include <quadmath.h>.
3543 i_rpcsvcdbm (i_dbm.U):
3544 This variable conditionally defines the I_RPCSVC_DBM symbol, which
3545 indicates to the C program that <rpcsvc/dbm.h> exists and should
3546 be included. Some System V systems might need this instead of <dbm.h>.
3548 i_sgtty (i_termio.U):
3549 This variable conditionally defines the I_SGTTY symbol, which
3550 indicates to the C program that it should include <sgtty.h> rather
3553 i_shadow (i_shadow.U):
3554 This variable conditionally defines the I_SHADOW symbol, and indicates
3555 whether a C program should include <shadow.h>.
3557 i_socks (i_socks.U):
3558 This variable conditionally defines the I_SOCKS symbol, and indicates
3559 whether a C program should include <socks.h>.
3561 i_stdbool (i_stdbool.U):
3562 This variable conditionally defines the I_STDBOOL symbol, which
3563 indicates to the C program that <stdbool.h> exists and should
3566 i_stdint (i_stdint.U):
3567 This variable conditionally defines the I_STDINT symbol, which
3568 indicates to the C program that <stdint.h> exists and should
3571 i_string (i_string.U):
3572 This variable conditionally defines the I_STRING symbol, which
3573 indicates that <string.h> should be included rather than <strings.h>.
3575 i_sunmath (i_sunmath.U):
3576 This variable conditionally defines the I_SUNMATH symbol, and indicates
3577 whether a C program should include <sunmath.h>.
3579 i_sysaccess (i_sysaccess.U):
3580 This variable conditionally defines the I_SYS_ACCESS symbol,
3581 and indicates whether a C program should include <sys/access.h>.
3583 i_sysdir (i_sysdir.U):
3584 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3585 whether a C program should include <sys/dir.h>.
3587 i_sysfile (i_sysfile.U):
3588 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3589 whether a C program should include <sys/file.h> to get R_OK and friends.
3591 i_sysfilio (i_sysioctl.U):
3592 This variable conditionally defines the I_SYS_FILIO symbol, which
3593 indicates to the C program that <sys/filio.h> exists and should
3594 be included in preference to <sys/ioctl.h>.
3597 This variable conditionally defines I_SYS_IN, which indicates
3598 to the C program that it should include <sys/in.h> instead of
3601 i_sysioctl (i_sysioctl.U):
3602 This variable conditionally defines the I_SYS_IOCTL symbol, which
3603 indicates to the C program that <sys/ioctl.h> exists and should
3606 i_syslog (i_syslog.U):
3607 This variable conditionally defines the I_SYSLOG symbol,
3608 and indicates whether a C program should include <syslog.h>.
3610 i_sysmman (i_sysmman.U):
3611 This variable conditionally defines the I_SYS_MMAN symbol, and
3612 indicates whether a C program should include <sys/mman.h>.
3614 i_sysmode (i_sysmode.U):
3615 This variable conditionally defines the I_SYSMODE symbol,
3616 and indicates whether a C program should include <sys/mode.h>.
3618 i_sysmount (i_sysmount.U):
3619 This variable conditionally defines the I_SYSMOUNT symbol,
3620 and indicates whether a C program should include <sys/mount.h>.
3622 i_sysndir (i_sysndir.U):
3623 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3624 whether a C program should include <sys/ndir.h>.
3626 i_sysparam (i_sysparam.U):
3627 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3628 whether a C program should include <sys/param.h>.
3630 i_syspoll (i_syspoll.U):
3631 This variable conditionally defines the I_SYS_POLL symbol, which
3632 indicates to the C program that it should include <sys/poll.h>.
3634 i_sysresrc (i_sysresrc.U):
3635 This variable conditionally defines the I_SYS_RESOURCE symbol,
3636 and indicates whether a C program should include <sys/resource.h>.
3638 i_syssecrt (i_syssecrt.U):
3639 This variable conditionally defines the I_SYS_SECURITY symbol,
3640 and indicates whether a C program should include <sys/security.h>.
3642 i_sysselct (i_sysselct.U):
3643 This variable conditionally defines I_SYS_SELECT, which indicates
3644 to the C program that it should include <sys/select.h> in order to
3645 get the definition of struct timeval.
3647 i_syssockio (i_sysioctl.U):
3648 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3649 C program that socket ioctl codes may be found in <sys/sockio.h>
3650 instead of <sys/ioctl.h>.
3652 i_sysstat (i_sysstat.U):
3653 This variable conditionally defines the I_SYS_STAT symbol,
3654 and indicates whether a C program should include <sys/stat.h>.
3656 i_sysstatfs (i_sysstatfs.U):
3657 This variable conditionally defines the I_SYSSTATFS symbol,
3658 and indicates whether a C program should include <sys/statfs.h>.
3660 i_sysstatvfs (i_sysstatvfs.U):
3661 This variable conditionally defines the I_SYSSTATVFS symbol,
3662 and indicates whether a C program should include <sys/statvfs.h>.
3664 i_systime (i_time.U):
3665 This variable conditionally defines I_SYS_TIME, which indicates
3666 to the C program that it should include <sys/time.h>.
3668 i_systimek (i_time.U):
3669 This variable conditionally defines I_SYS_TIME_KERNEL, which
3670 indicates to the C program that it should include <sys/time.h>
3671 with KERNEL defined.
3673 i_systimes (i_systimes.U):
3674 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3675 whether a C program should include <sys/times.h>.
3677 i_systypes (i_systypes.U):
3678 This variable conditionally defines the I_SYS_TYPES symbol,
3679 and indicates whether a C program should include <sys/types.h>.
3681 i_sysuio (i_sysuio.U):
3682 This variable conditionally defines the I_SYSUIO symbol, and indicates
3683 whether a C program should include <sys/uio.h>.
3685 i_sysun (i_sysun.U):
3686 This variable conditionally defines I_SYS_UN, which indicates
3687 to the C program that it should include <sys/un.h> to get UNIX
3688 domain socket definitions.
3690 i_sysutsname (i_sysutsname.U):
3691 This variable conditionally defines the I_SYSUTSNAME symbol,
3692 and indicates whether a C program should include <sys/utsname.h>.
3694 i_sysvfs (i_sysvfs.U):
3695 This variable conditionally defines the I_SYSVFS symbol,
3696 and indicates whether a C program should include <sys/vfs.h>.
3698 i_syswait (i_syswait.U):
3699 This variable conditionally defines I_SYS_WAIT, which indicates
3700 to the C program that it should include <sys/wait.h>.
3702 i_termio (i_termio.U):
3703 This variable conditionally defines the I_TERMIO symbol, which
3704 indicates to the C program that it should include <termio.h> rather
3707 i_termios (i_termio.U):
3708 This variable conditionally defines the I_TERMIOS symbol, which
3709 indicates to the C program that the POSIX <termios.h> file is
3713 This variable conditionally defines I_TIME, which indicates
3714 to the C program that it should include <time.h>.
3716 i_unistd (i_unistd.U):
3717 This variable conditionally defines the I_UNISTD symbol, and indicates
3718 whether a C program should include <unistd.h>.
3720 i_ustat (i_ustat.U):
3721 This variable conditionally defines the I_USTAT symbol, and indicates
3722 whether a C program should include <ustat.h>.
3724 i_utime (i_utime.U):
3725 This variable conditionally defines the I_UTIME symbol, and indicates
3726 whether a C program should include <utime.h>.
3728 i_vfork (i_vfork.U):
3729 This variable conditionally defines the I_VFORK symbol, and indicates
3730 whether a C program should include vfork.h.
3732 i_xlocale (d_newlocale.U):
3733 This symbol, if defined, indicates to the C program that it should
3734 include <xlocale.h> to get uselocale() and its friends
3736 ignore_versioned_solibs (libs.U):
3737 This variable should be non-empty if non-versioned shared
3738 libraries (libfoo.so.x.y) are to be ignored (because they
3739 cannot be linked against).
3741 inc_version_list (inc_version_list.U):
3742 This variable specifies the list of subdirectories in over
3743 which perl.c:incpush() and lib/lib.pm will automatically
3744 search when adding directories to @INC. The elements in
3745 the list are separated by spaces. This is only useful
3746 if you have a perl library directory tree structured like the
3747 default one. See INSTALL for how this works. The versioned
3748 site_perl directory was introduced in 5.005, so that is the
3749 lowest possible value.
3751 This list includes architecture-dependent directories back to
3752 version $api_versionstring (e.g. 5.5.640) and
3753 architecture-independent directories all the way back to
3756 inc_version_list_init (inc_version_list.U):
3757 This variable holds the same list as inc_version_list, but
3758 each item is enclosed in double quotes and separated by commas,
3759 suitable for use in the PERL_INC_VERSION_LIST initialization.
3762 This variable must precede the normal include path to get the
3763 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3764 Value can be "" or "/bsd43" on mips.
3767 This variable must precede the normal include path to get the
3768 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3769 Value can be "" or "/bsd43" on mips.
3772 This variable is defined but not used by Configure.
3773 The value is the empty string and is not useful.
3775 initialinstalllocation (bin.U):
3776 When userelocatableinc is true, this variable holds the location
3777 that make install should copy the perl binary to, with all the
3778 run-time relocatable paths calculated from this at install time.
3779 When used, it is initialized to the original value of binexp, and
3780 then binexp is set to '.../', as the other binaries are found
3781 relative to the perl binary.
3783 installarchlib (archlib.U):
3784 This variable is really the same as archlibexp but may differ on
3785 those systems using AFS. For extra portability, only this variable
3786 should be used in makefiles.
3789 This variable is the same as binexp unless AFS is running in which case
3790 the user is explicitly prompted for it. This variable should always
3791 be used in your makefiles for maximum portability.
3793 installhtml1dir (html1dir.U):
3794 This variable is really the same as html1direxp, unless you are
3795 using a different installprefix. For extra portability, you
3796 should only use this variable within your makefiles.
3798 installhtml3dir (html3dir.U):
3799 This variable is really the same as html3direxp, unless you are
3800 using a different installprefix. For extra portability, you
3801 should only use this variable within your makefiles.
3803 installman1dir (man1dir.U):
3804 This variable is really the same as man1direxp, unless you are using
3805 AFS in which case it points to the read/write location whereas
3806 man1direxp only points to the read-only access location. For extra
3807 portability, you should only use this variable within your makefiles.
3809 installman3dir (man3dir.U):
3810 This variable is really the same as man3direxp, unless you are using
3811 AFS in which case it points to the read/write location whereas
3812 man3direxp only points to the read-only access location. For extra
3813 portability, you should only use this variable within your makefiles.
3815 installprefix (installprefix.U):
3816 This variable holds the name of the directory below which
3817 "make install" will install the package. For most users, this
3818 is the same as prefix. However, it is useful for
3819 installing the software into a different (usually temporary)
3820 location after which it can be bundled up and moved somehow
3821 to the final location specified by prefix.
3823 installprefixexp (installprefix.U):
3824 This variable holds the full absolute path of installprefix
3825 with all ~-expansion done.
3827 installprivlib (privlib.U):
3828 This variable is really the same as privlibexp but may differ on
3829 those systems using AFS. For extra portability, only this variable
3830 should be used in makefiles.
3832 installscript (scriptdir.U):
3833 This variable is usually the same as scriptdirexp, unless you are on
3834 a system running AFS, in which case they may differ slightly. You
3835 should always use this variable within your makefiles for portability.
3837 installsitearch (sitearch.U):
3838 This variable is really the same as sitearchexp but may differ on
3839 those systems using AFS. For extra portability, only this variable
3840 should be used in makefiles.
3842 installsitebin (sitebin.U):
3843 This variable is usually the same as sitebinexp, unless you are on
3844 a system running AFS, in which case they may differ slightly. You
3845 should always use this variable within your makefiles for portability.
3847 installsitehtml1dir (sitehtml1dir.U):
3848 This variable is really the same as sitehtml1direxp, unless you are using
3849 AFS in which case it points to the read/write location whereas
3850 html1direxp only points to the read-only access location. For extra
3851 portability, you should only use this variable within your makefiles.
3853 installsitehtml3dir (sitehtml3dir.U):
3854 This variable is really the same as sitehtml3direxp, unless you are using
3855 AFS in which case it points to the read/write location whereas
3856 html3direxp only points to the read-only access location. For extra
3857 portability, you should only use this variable within your makefiles.
3859 installsitelib (sitelib.U):
3860 This variable is really the same as sitelibexp but may differ on
3861 those systems using AFS. For extra portability, only this variable
3862 should be used in makefiles.
3864 installsiteman1dir (siteman1dir.U):
3865 This variable is really the same as siteman1direxp, unless you are using
3866 AFS in which case it points to the read/write location whereas
3867 man1direxp only points to the read-only access location. For extra
3868 portability, you should only use this variable within your makefiles.
3870 installsiteman3dir (siteman3dir.U):
3871 This variable is really the same as siteman3direxp, unless you are using
3872 AFS in which case it points to the read/write location whereas
3873 man3direxp only points to the read-only access location. For extra
3874 portability, you should only use this variable within your makefiles.
3876 installsitescript (sitescript.U):
3877 This variable is usually the same as sitescriptexp, unless you are on
3878 a system running AFS, in which case they may differ slightly. You
3879 should always use this variable within your makefiles for portability.
3881 installstyle (installstyle.U):
3882 This variable describes the "style" of the perl installation.
3883 This is intended to be useful for tools that need to
3884 manipulate entire perl distributions. Perl itself doesn't use
3885 this to find its libraries -- the library directories are
3886 stored directly in Config.pm. Currently, there are only two
3887 styles: "lib" and "lib/perl5". The default library locations
3888 (e.g. privlib, sitelib) are either $prefix/lib or
3889 $prefix/lib/perl5. The former is useful if $prefix is a
3890 directory dedicated to perl (e.g. /opt/perl), while the latter
3891 is useful if $prefix is shared by many packages, e.g. if
3894 Unfortunately, while this "style" variable is used to set
3895 defaults for all three directory hierarchies (core, vendor, and
3896 site), there is no guarantee that the same style is actually
3897 appropriate for all those directories. For example, $prefix
3898 might be /opt/perl, but $siteprefix might be /usr/local.
3899 (Perhaps, in retrospect, the "lib" style should never have been
3900 supported, but it did seem like a nice idea at the time.)
3902 The situation is even less clear for tools such as MakeMaker
3903 that can be used to install additional modules into
3904 non-standard places. For example, if a user intends to install
3905 a module into a private directory (perhaps by setting PREFIX on
3906 the Makefile.PL command line), then there is no reason to
3907 assume that the Configure-time $installstyle setting will be
3908 relevant for that PREFIX.
3910 This may later be extended to include other information, so
3911 be careful with pattern-matching on the results.
3913 For compatibility with perl5.005 and earlier, the default
3914 setting is based on whether or not $prefix contains the string
3917 installusrbinperl (instubperl.U):
3918 This variable tells whether Perl should be installed also as
3919 /usr/bin/perl in addition to
3922 installvendorarch (vendorarch.U):
3923 This variable is really the same as vendorarchexp but may differ on
3924 those systems using AFS. For extra portability, only this variable
3925 should be used in makefiles.
3927 installvendorbin (vendorbin.U):
3928 This variable is really the same as vendorbinexp but may differ on
3929 those systems using AFS. For extra portability, only this variable
3930 should be used in makefiles.
3932 installvendorhtml1dir (vendorhtml1dir.U):
3933 This variable is really the same as vendorhtml1direxp but may differ on
3934 those systems using AFS. For extra portability, only this variable
3935 should be used in makefiles.
3937 installvendorhtml3dir (vendorhtml3dir.U):
3938 This variable is really the same as vendorhtml3direxp but may differ on
3939 those systems using AFS. For extra portability, only this variable
3940 should be used in makefiles.
3942 installvendorlib (vendorlib.U):
3943 This variable is really the same as vendorlibexp but may differ on
3944 those systems using AFS. For extra portability, only this variable
3945 should be used in makefiles.
3947 installvendorman1dir (vendorman1dir.U):
3948 This variable is really the same as vendorman1direxp but may differ on
3949 those systems using AFS. For extra portability, only this variable
3950 should be used in makefiles.
3952 installvendorman3dir (vendorman3dir.U):
3953 This variable is really the same as vendorman3direxp but may differ on
3954 those systems using AFS. For extra portability, only this variable
3955 should be used in makefiles.
3957 installvendorscript (vendorscript.U):
3958 This variable is really the same as vendorscriptexp but may differ on
3959 those systems using AFS. For extra portability, only this variable
3960 should be used in makefiles.
3962 intsize (intsize.U):
3963 This variable contains the value of the INTSIZE symbol, which
3964 indicates to the C program how many bytes there are in an int.
3966 issymlink (issymlink.U):
3967 This variable holds the test command to test for a symbolic link
3968 (if they are supported). Typical values include 'test -h' and
3971 ivdformat (perlxvf.U):
3972 This variable contains the format string used for printing
3973 a Perl IV as a signed decimal integer.
3976 This variable is the size of an IV in bytes.
3979 This variable contains the C type used for Perl's IV.
3981 known_extensions (Extensions.U):
3982 This variable holds a list of all extensions (both XS and non-xs)
3983 included in the package source distribution. This information is
3984 only really of use during the Perl build, as the list makes no
3985 distinction between extensions which were build and installed, and
3986 those which where not. See "extensions" for the list of extensions
3987 actually built and available.
3990 This variable is defined but not used by Configure.
3991 The value is the empty string and is not useful.
3994 This variable indicates the program to be used to link
3995 libraries for dynamic loading. On some systems, it is 'ld'.
3996 On ELF systems, it should be $cc. Mostly, we'll try to respect
3997 the hint file setting.
3999 ld_can_script (dlsrc.U):
4000 This variable shows if the loader accepts scripts in the form of
4001 -Wl,--version-script=ld.script. This is currently only supported
4002 for GNU ld on ELF in dynamic loading builds.
4004 lddlflags (dlsrc.U):
4005 This variable contains any special flags that might need to be
4006 passed to $ld to create a shared library suitable for dynamic
4007 loading. It is up to the makefile to use it. For hpux, it
4008 should be '-b'. For sunos 4.1, it is empty.
4010 ldflags (ccflags.U):
4011 This variable contains any additional C loader flags desired by
4012 the user. It is up to the Makefile to use this.
4014 ldflags_uselargefiles (uselfs.U):
4015 This variable contains the loader flags needed by large file builds
4016 and added to ldflags by hints files.
4018 ldlibpthname (libperl.U):
4019 This variable holds the name of the shared library
4020 search path, often LD_LIBRARY_PATH. To get an empty
4021 string, the hints file must set this to 'none'.
4024 This variable is used internally by Configure to determine the
4025 full pathname (if any) of the less program. After Configure runs,
4026 the value is reset to a plain "less" and is not useful.
4029 This is an old synonym for _a.
4032 This variable contains the location of the C library.
4034 libperl (libperl.U):
4035 The perl executable is obtained by linking perlmain.c with
4036 libperl, any static extensions (usually just DynaLoader),
4037 and any other libraries needed on this system. libperl
4038 is usually libperl.a, but can also be libperl.so.xxx if
4039 the user wishes to build a perl executable with a shared
4043 This variable holds the general path (space-separated) used to find
4044 libraries. It is intended to be used by other units.
4047 This variable holds the additional libraries we want to use.
4048 It is up to the Makefile to deal with it. The list can be empty.
4051 This variable holds the directory names aka dirnames of the libraries
4052 we found and accepted, duplicates are removed.
4055 This variable holds the filenames aka basenames of the libraries
4056 we found and accepted.
4059 This variable holds the full pathnames of the libraries
4060 we found and accepted.
4063 This variable holds the directory names probed for libraries.
4065 libswanted (Myinit.U):
4066 This variable holds a list of all the libraries we want to
4067 search. The order is chosen to pick up the c library
4068 ahead of ucb or bsd libraries for SVR4.
4070 libswanted_uselargefiles (uselfs.U):
4071 This variable contains the libraries needed by large file builds
4072 and added to ldflags by hints files. It is a space separated list
4073 of the library names without the "lib" prefix or any suffix, just
4077 This variable is defined but not used by Configure.
4078 The value is the empty string and is not useful.
4081 This variable is defined but not used by Configure.
4082 The value is the empty string and is not useful.
4084 lkflags (ccflags.U):
4085 This variable contains any additional C partial linker flags desired by
4086 the user. It is up to the Makefile to use this.
4089 This variable is used internally by Configure to determine the
4090 full pathname (if any) of the ln program. After Configure runs,
4091 the value is reset to a plain "ln" and is not useful.
4094 This variable holds the name of the command to make
4095 symbolic links (if they are supported). It can be used
4096 in the Makefile. It is either 'ln -s' or 'ln'
4098 localtime_r_proto (d_localtime_r.U):
4099 This variable encodes the prototype of localtime_r.
4100 It is zero if d_localtime_r is undef, and one of the
4101 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
4104 locincpth (ccflags.U):
4105 This variable contains a list of additional directories to be
4106 searched by the compiler. The appropriate '-I' directives will
4107 be added to ccflags. This is intended to simplify setting
4108 local directories from the Configure command line.
4109 It's not much, but it parallels the loclibpth stuff in libpth.U.
4111 loclibpth (libpth.U):
4112 This variable holds the paths (space-separated) used to find local
4113 libraries. It is prepended to libpth, and is intended to be easily
4114 set from the command line.
4116 longdblinfbytes (infnan.U):
4117 This variable contains comma-separated list of hexadecimal bytes
4118 for the long double precision infinity.
4120 longdblkind (d_longdbl.U):
4121 This variable, if defined, encodes the type of a long double:
4123 1 = IEEE 754 128-bit little endian,
4124 2 = IEEE 754 128-bit big endian,
4125 3 = x86 80-bit little endian,
4126 4 = x86 80-bit big endian,
4127 5 = double-double 128-bit little endian,
4128 6 = double-double 128-bit big endian,
4129 7 = 128-bit mixed-endian double-double (64-bit LEs in BE),
4130 8 = 128-bit mixed-endian double-double (64-bit BEs in LE),
4131 9 = 128-bit PDP-style mixed-endian long doubles,
4132 -1 = unknown format.
4134 longdblmantbits (mantbits.U):
4135 This symbol, if defined, tells how many mantissa bits
4136 there are in long double precision floating point format.
4137 Note that this can be LDBL_MANT_DIG minus one,
4138 since LDBL_MANT_DIG can include the IEEE 754 implicit bit.
4139 The common x86-style 80-bit long double does not have
4142 longdblnanbytes (infnan.U):
4143 This variable contains comma-separated list of hexadecimal bytes
4144 for the long double precision not-a-number.
4146 longdblsize (d_longdbl.U):
4147 This variable contains the value of the LONG_DOUBLESIZE symbol, which
4148 indicates to the C program how many bytes there are in a long double,
4149 if this system supports long doubles. Note that this is
4150 sizeof(long double), which may include unused bytes.
4152 longlongsize (d_longlong.U):
4153 This variable contains the value of the LONGLONGSIZE symbol, which
4154 indicates to the C program how many bytes there are in a long long,
4155 if this system supports long long.
4157 longsize (intsize.U):
4158 This variable contains the value of the LONGSIZE symbol, which
4159 indicates to the C program how many bytes there are in a long.
4162 This variable is defined but not used by Configure.
4163 The value is the empty string and is not useful.
4166 This variable is defined but not used by Configure.
4167 The value is the empty string and is not useful.
4170 This variable is used internally by Configure to determine the
4171 full pathname (if any) of the ls program. After Configure runs,
4172 the value is reset to a plain "ls" and is not useful.
4174 lseeksize (lseektype.U):
4175 This variable defines lseektype to be something like off_t, long,
4176 or whatever type is used to declare lseek offset's type in the
4177 kernel (which also appears to be lseek's return type).
4179 lseektype (lseektype.U):
4180 This variable defines lseektype to be something like off_t, long,
4181 or whatever type is used to declare lseek offset's type in the
4182 kernel (which also appears to be lseek's return type).
4185 This variable is defined but not used by Configure.
4186 The value is the empty string and is not useful.
4189 This variable is defined but not used by Configure.
4190 The value is the empty string and is not useful.
4193 This variable is used internally by Configure to determine the
4194 full pathname (if any) of the make program. After Configure runs,
4195 the value is reset to a plain "make" and is not useful.
4197 make_set_make (make.U):
4198 Some versions of 'make' set the variable MAKE. Others do not.
4199 This variable contains the string to be included in Makefile.SH
4200 so that MAKE is set if needed, and not if not needed.
4201 Possible values are:
4203 make_set_make='#' # If your make program handles this for you,
4205 make_set_make="MAKE=$make" # if it doesn't.
4207 This uses a comment character so that we can distinguish a
4208 'set' value (from a previous config.sh or Configure '-D' option)
4209 from an uncomputed value.
4211 mallocobj (mallocsrc.U):
4212 This variable contains the name of the malloc.o that this package
4213 generates, if that malloc.o is preferred over the system malloc.
4214 Otherwise the value is null. This variable is intended for generating
4215 Makefiles. See mallocsrc.
4217 mallocsrc (mallocsrc.U):
4218 This variable contains the name of the malloc.c that comes with
4219 the package, if that malloc.c is preferred over the system malloc.
4220 Otherwise the value is null. This variable is intended for generating
4223 malloctype (mallocsrc.U):
4224 This variable contains the kind of ptr returned by malloc and realloc.
4226 man1dir (man1dir.U):
4227 This variable contains the name of the directory in which manual
4228 source pages are to be put. It is the responsibility of the
4229 Makefile.SH to get the value of this into the proper command.
4230 You must be prepared to do the ~name expansion yourself.
4232 man1direxp (man1dir.U):
4233 This variable is the same as the man1dir variable, but is filename
4234 expanded at configuration time, for convenient use in makefiles.
4236 man1ext (man1dir.U):
4237 This variable contains the extension that the manual page should
4238 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
4241 man3dir (man3dir.U):
4242 This variable contains the name of the directory in which manual
4243 source pages are to be put. It is the responsibility of the
4244 Makefile.SH to get the value of this into the proper command.
4245 You must be prepared to do the ~name expansion yourself.
4247 man3direxp (man3dir.U):
4248 This variable is the same as the man3dir variable, but is filename
4249 expanded at configuration time, for convenient use in makefiles.
4251 man3ext (man3dir.U):
4252 This variable contains the extension that the manual page should
4253 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
4256 mips_type (usrinc.U):
4257 This variable holds the environment type for the mips system.
4258 Possible values are "BSD 4.3" and "System V".
4260 mistrustnm (Csym.U):
4261 This variable can be used to establish a fallthrough for the cases
4262 where nm fails to find a symbol. If usenm is false or usenm is true
4263 and mistrustnm is false, this variable has no effect. If usenm is true
4264 and mistrustnm is "compile", a test program will be compiled to try to
4265 find any symbol that can't be located via nm lookup. If mistrustnm is
4266 "run", the test program will be run as well as being compiled.
4269 This variable is used internally by Configure to determine the
4270 full pathname (if any) of the mkdir program. After Configure runs,
4271 the value is reset to a plain "mkdir" and is not useful.
4273 mmaptype (d_mmap.U):
4274 This symbol contains the type of pointer returned by mmap()
4275 (and simultaneously the type of the first argument).
4276 It can be 'void *' or 'caddr_t'.
4278 modetype (modetype.U):
4279 This variable defines modetype to be something like mode_t,
4280 int, unsigned short, or whatever type is used to declare file
4281 modes for system calls.
4284 This variable is used internally by Configure to determine the
4285 full pathname (if any) of the more program. After Configure runs,
4286 the value is reset to a plain "more" and is not useful.
4288 multiarch (multiarch.U):
4289 This variable conditionally defines the MULTIARCH symbol
4290 which signifies the presence of multiplatform files.
4291 This is normally set by hints files.
4294 This variable is defined but not used by Configure.
4295 The value is the empty string and is not useful.
4297 myarchname (archname.U):
4298 This variable holds the architecture name computed by Configure in
4299 a previous run. It is not intended to be perused by any user and
4300 should never be set in a hint file.
4302 mydomain (myhostname.U):
4303 This variable contains the eventual value of the MYDOMAIN symbol,
4304 which is the domain of the host the program is going to run on.
4305 The domain must be appended to myhostname to form a complete host name.
4306 The dot comes with mydomain, and need not be supplied by the program.
4308 myhostname (myhostname.U):
4309 This variable contains the eventual value of the MYHOSTNAME symbol,
4310 which is the name of the host the program is going to run on.
4311 The domain is not kept with hostname, but must be gotten from mydomain.
4312 The dot comes with mydomain, and need not be supplied by the program.
4314 myuname (Oldconfig.U):
4315 The output of 'uname -a' if available, otherwise the hostname.
4316 The whole thing is then lower-cased and slashes and single quotes are
4320 This variable contains the '-n' flag if that is what causes the echo
4321 command to suppress newline. Otherwise it is null. Correct usage is
4322 $echo $n "prompt for a question: $c".
4324 need_va_copy (need_va_copy.U):
4325 This symbol, if defined, indicates that the system stores
4326 the variable argument list datatype, va_list, in a format
4327 that cannot be copied by simple assignment, so that some
4328 other means must be used when copying is required.
4329 As such systems vary in their provision (or non-provision)
4330 of copying mechanisms, handy.h defines a platform-
4331 independent macro, Perl_va_copy(src, dst), to do the job.
4333 netdb_hlen_type (netdbtype.U):
4334 This variable holds the type used for the 2nd argument to
4335 gethostbyaddr(). Usually, this is int or size_t or unsigned.
4336 This is only useful if you have gethostbyaddr(), naturally.
4338 netdb_host_type (netdbtype.U):
4339 This variable holds the type used for the 1st argument to
4340 gethostbyaddr(). Usually, this is char * or void *, possibly
4341 with or without a const prefix.
4342 This is only useful if you have gethostbyaddr(), naturally.
4344 netdb_name_type (netdbtype.U):
4345 This variable holds the type used for the argument to
4346 gethostbyname(). Usually, this is char * or const char *.
4347 This is only useful if you have gethostbyname(), naturally.
4349 netdb_net_type (netdbtype.U):
4350 This variable holds the type used for the 1st argument to
4351 getnetbyaddr(). Usually, this is int or long.
4352 This is only useful if you have getnetbyaddr(), naturally.
4355 This variable is used internally by Configure to determine the
4356 full pathname (if any) of the nm program. After Configure runs,
4357 the value is reset to a plain "nm" and is not useful.
4360 This variable holds the options that may be necessary for nm.
4362 nm_so_opt (usenm.U):
4363 This variable holds the options that may be necessary for nm
4364 to work on a shared library but that can not be used on an
4365 archive library. Currently, this is only used by Linux, where
4366 nm --dynamic is *required* to get symbols from an ELF library which
4367 has been stripped, but nm --dynamic is *fatal* on an archive library.
4368 Maybe Linux should just always set usenm=false.
4370 nonxs_ext (Extensions.U):
4371 This variable holds a list of all non-xs extensions built and
4372 installed by the package. By default, all non-xs extensions
4373 distributed will be built, with the exception of platform-specific
4374 extensions (currently only one VMS specific extension).
4377 This variable is used internally by Configure to determine the
4378 full pathname (if any) of the nroff program. After Configure runs,
4379 the value is reset to a plain "nroff" and is not useful.
4381 nv_overflows_integers_at (perlxv.U):
4382 This variable gives the largest integer value that NVs can hold
4383 as a constant floating point expression.
4384 If it could not be determined, it holds the value 0.
4386 nv_preserves_uv_bits (perlxv.U):
4387 This variable indicates how many of bits type uvtype
4388 a variable nvtype can preserve.
4390 nveformat (perlxvf.U):
4391 This variable contains the format string used for printing
4392 a Perl NV using %e-ish floating point format.
4394 nvEUformat (perlxvf.U):
4395 This variable contains the format string used for printing
4396 a Perl NV using %E-ish floating point format.
4398 nvfformat (perlxvf.U):
4399 This variable contains the format string used for printing
4400 a Perl NV using %f-ish floating point format.
4402 nvFUformat (perlxvf.U):
4403 This variable contains the format string used for printing
4404 a Perl NV using %F-ish floating point format.
4406 nvgformat (perlxvf.U):
4407 This variable contains the format string used for printing
4408 a Perl NV using %g-ish floating point format.
4410 nvGUformat (perlxvf.U):
4411 This variable contains the format string used for printing
4412 a Perl NV using %G-ish floating point format.
4414 nvmantbits (mantbits.U):
4415 This variable tells how many bits the mantissa of a Perl NV has,
4416 not including the possible implicit bit.
4419 This variable is the size of a Perl NV in bytes.
4420 Note that some floating point formats have unused bytes.
4423 This variable contains the C type used for Perl's NV.
4425 o_nonblock (nblock_io.U):
4426 This variable bears the symbol value to be used during open() or fcntl()
4427 to turn on non-blocking I/O for a file descriptor. If you wish to switch
4428 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
4429 but that is only supported by some devices.
4432 This is an old synonym for _o.
4434 old_pthread_create_joinable (d_pthrattrj.U):
4435 This variable defines the constant to use for creating joinable
4436 (aka undetached) pthreads. Unused if pthread.h defines
4437 PTHREAD_CREATE_JOINABLE. If used, possible values are
4438 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
4440 optimize (ccflags.U):
4441 This variable contains any optimizer/debugger flag that should be used.
4442 It is up to the Makefile to use it.
4444 orderlib (orderlib.U):
4445 This variable is "true" if the components of libraries must be ordered
4446 (with `lorder $* | tsort`) before placing them in an archive. Set to
4447 "false" if ranlib or ar can generate random libraries.
4449 osname (Oldconfig.U):
4450 This variable contains the operating system name (e.g. sunos,
4451 solaris, hpux, etc.). It can be useful later on for setting
4452 defaults. Any spaces are replaced with underscores. It is set
4453 to a null string if we can't figure it out.
4455 osvers (Oldconfig.U):
4456 This variable contains the operating system version (e.g.
4457 4.1.3, 5.2, etc.). It is primarily used for helping select
4458 an appropriate hints file, but might be useful elsewhere for
4459 setting defaults. It is set to '' if we can't figure it out.
4460 We try to be flexible about how much of the version number
4461 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
4462 same for this package, hints files might just be os_4.0 or
4463 os_4.1, etc., not keeping separate files for each little release.
4465 otherlibdirs (otherlibdirs.U):
4466 This variable contains a colon-separated set of paths for the perl
4467 binary to search for additional library files or modules.
4468 These directories will be tacked to the end of @INC.
4469 Perl will automatically search below each path for version-
4470 and architecture-specific directories. See inc_version_list
4472 A value of ' ' means 'none' and is used to preserve this value
4473 for the next run through Configure.
4475 package (package.U):
4476 This variable contains the name of the package being constructed.
4477 It is primarily intended for the use of later Configure units.
4480 This variable contains the name of the preferred pager on the system.
4481 Usual values are (the full pathnames of) more, less, pg, or cat.
4484 This variable contains a command that produces the text of the
4485 /etc/passwd file. This is normally "cat /etc/passwd", but can be
4486 "ypcat passwd" when NIS is used.
4487 On some systems, such as os390, there may be no equivalent
4488 command, in which case this variable is unset.
4490 patchlevel (patchlevel.U):
4491 The patchlevel level of this package.
4492 The value of patchlevel comes from the patchlevel.h file.
4493 In a version number such as 5.6.1, this is the "6".
4494 In patchlevel.h, this is referred to as "PERL_VERSION".
4497 This is an old synonym for p_ in Head.U, the character
4498 used to separate elements in the command shell search PATH.
4501 This variable is used internally by Configure to determine the
4502 full pathname (if any) of the perl program. After Configure runs,
4503 the value is reset to a plain "perl" and is not useful.
4506 This variable contains the full path (if any) to a previously
4507 installed perl5.005 or later suitable for running the script
4508 to determine inc_version_list.
4510 PERL_API_REVISION (patchlevel.h):
4511 This number describes the earliest compatible PERL_REVISION of
4512 Perl ("compatibility" here being defined as sufficient binary/API
4513 compatibility to run XS code built with the older version).
4514 Normally this does not change across maintenance releases.
4515 Please read the comment in patchlevel.h.
4517 PERL_API_SUBVERSION (patchlevel.h):
4518 This number describes the earliest compatible PERL_SUBVERSION of
4519 Perl ("compatibility" here being defined as sufficient binary/API
4520 compatibility to run XS code built with the older version).
4521 Normally this does not change across maintenance releases.
4522 Please read the comment in patchlevel.h.
4524 PERL_API_VERSION (patchlevel.h):
4525 This number describes the earliest compatible PERL_VERSION of
4526 Perl ("compatibility" here being defined as sufficient binary/API
4527 compatibility to run XS code built with the older version).
4528 Normally this does not change across maintenance releases.
4529 Please read the comment in patchlevel.h.
4531 PERL_CONFIG_SH (Oldsyms.U):
4532 This is set to 'true' in config.sh so that a shell script
4533 sourcing config.sh can tell if it has been sourced already.
4535 PERL_PATCHLEVEL (Oldsyms.U):
4536 This symbol reflects the patchlevel, if available. Will usually
4537 come from the .patch file, which is available when the perl
4538 source tree was fetched with rsync.
4540 perl_patchlevel (patchlevel.U):
4541 This is the Perl patch level, a numeric change identifier,
4542 as defined by whichever source code maintenance system
4543 is used to maintain the patches; currently Perforce.
4544 It does not correlate with the Perl version numbers or
4545 the maintenance versus development dichotomy except
4546 by also being increasing.
4548 PERL_REVISION (Oldsyms.U):
4549 In a Perl version number such as 5.6.2, this is the 5.
4550 This value is manually set in patchlevel.h
4552 perl_static_inline (d_static_inline.U):
4553 This variable defines the PERL_STATIC_INLINE symbol to
4554 the best-guess incantation to use for static inline functions.
4555 Possibilities include
4557 static __inline__ (gcc -ansi)
4558 static __inline (MSVC)
4559 static _inline (older MSVC)
4560 static (c89 compilers)
4562 PERL_SUBVERSION (Oldsyms.U):
4563 In a Perl version number such as 5.6.2, this is the 2.
4564 Values greater than 50 represent potentially unstable
4565 development subversions.
4566 This value is manually set in patchlevel.h
4568 PERL_VERSION (Oldsyms.U):
4569 In a Perl version number such as 5.6.2, this is the 6.
4570 This value is manually set in patchlevel.h
4572 perladmin (perladmin.U):
4573 Electronic mail address of the perl5 administrator.
4576 The list of libraries needed by Perl only (any libraries needed
4577 by extensions only will by dropped, if using dynamic loading).
4579 perlpath (perlpath.U):
4580 This variable contains the eventual value of the PERLPATH symbol,
4581 which contains the name of the perl interpreter to be used in
4582 shell scripts and in the "eval 'exec'" idiom. This variable is
4583 not necessarily the pathname of the file containing the perl
4584 interpreter; you must append the executable extension (_exe) if
4585 it is not already present. Note that Perl code that runs during
4586 the Perl build process cannot reference this variable, as Perl
4587 may not have been installed, or even if installed, may be a
4588 different version of Perl.
4591 This variable is used internally by Configure to determine the
4592 full pathname (if any) of the pg program. After Configure runs,
4593 the value is reset to a plain "pg" and is not useful.
4595 phostname (myhostname.U):
4596 This variable contains the eventual value of the PHOSTNAME symbol,
4597 which is a command that can be fed to popen() to get the host name.
4598 The program should probably not presume that the domain is or isn't
4601 pidtype (pidtype.U):
4602 This variable defines PIDTYPE to be something like pid_t, int,
4603 ushort, or whatever type is used to declare process ids in the kernel.
4606 Holds the private path used by Configure to find out the libraries.
4607 Its value is prepend to libpth. This variable takes care of special
4608 machines, like the mips. Usually, it should be empty.
4611 This variable is defined but not used by Configure.
4612 The value is the empty string and is not useful.
4615 This variable is defined but not used by Configure.
4616 The value is the empty string and is not useful.
4619 This variable holds the name of the directory below which the
4620 user will install the package. Usually, this is /usr/local, and
4621 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4622 man pages in /usr/local/man, etc. It is only used to set defaults
4623 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4625 prefixexp (prefix.U):
4626 This variable holds the full absolute path of the directory below
4627 which the user will install the package. Derived from prefix.
4629 privlib (privlib.U):
4630 This variable contains the eventual value of the PRIVLIB symbol,
4631 which is the name of the private library for this package. It may
4632 have a ~ on the front. It is up to the makefile to eventually create
4633 this directory while performing installation (with ~ substitution).
4635 privlibexp (privlib.U):
4636 This variable is the ~name expanded version of privlib, so that you
4637 may use it directly in Makefiles or shell scripts.
4639 procselfexe (d_procselfexe.U):
4640 If d_procselfexe is defined, $procselfexe is the filename
4641 of the symbolic link pointing to the absolute pathname of
4642 the executing program.
4644 ptrsize (ptrsize.U):
4645 This variable contains the value of the PTRSIZE symbol, which
4646 indicates to the C program how many bytes there are in a pointer.
4648 quadkind (quadtype.U):
4649 This variable, if defined, encodes the type of a quad:
4650 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4652 quadtype (quadtype.U):
4653 This variable defines Quad_t to be something like long, int,
4654 long long, int64_t, or whatever type is used for 64-bit integers.
4656 randbits (randfunc.U):
4657 Indicates how many bits are produced by the function used to
4658 generate normalized random numbers.
4660 randfunc (randfunc.U):
4661 Indicates the name of the random number function to use.
4662 Values include drand48, random, and rand. In C programs,
4663 the 'Drand01' macro is defined to generate uniformly distributed
4664 random numbers over the range [0., 1.[ (see drand01 and nrand).
4666 random_r_proto (d_random_r.U):
4667 This variable encodes the prototype of random_r.
4668 It is zero if d_random_r is undef, and one of the
4669 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4672 randseedtype (randfunc.U):
4673 Indicates the type of the argument of the seedfunc.
4675 ranlib (orderlib.U):
4676 This variable is set to the pathname of the ranlib program, if it is
4677 needed to generate random libraries. Set to ":" if ar can generate
4678 random libraries or if random libraries are not supported
4680 rd_nodata (nblock_io.U):
4681 This variable holds the return code from read() when no data is
4682 present. It should be -1, but some systems return 0 when O_NDELAY is
4683 used, which is a shame because you cannot make the difference between
4684 no data and an EOF.. Sigh!
4686 readdir64_r_proto (d_readdir64_r.U):
4687 This variable encodes the prototype of readdir64_r.
4688 It is zero if d_readdir64_r is undef, and one of the
4689 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4692 readdir_r_proto (d_readdir_r.U):
4693 This variable encodes the prototype of readdir_r.
4694 It is zero if d_readdir_r is undef, and one of the
4695 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4698 revision (patchlevel.U):
4699 The value of revision comes from the patchlevel.h file.
4700 In a version number such as 5.6.1, this is the "5".
4701 In patchlevel.h, this is referred to as "PERL_REVISION".
4704 This variable is used internally by Configure to determine the
4705 full pathname (if any) of the rm program. After Configure runs,
4706 the value is reset to a plain "rm" and is not useful.
4709 This is a cleanup variable for try test programs.
4710 Internal Configure use only.
4713 This variable is defined but not used by Configure.
4714 The value is the empty string and is not useful.
4717 This variable contains the command used by Configure
4718 to copy and execute a cross-compiled executable in the
4719 target host. Useful and available only during Perl build.
4720 Empty string '' if not cross-compiling.
4723 This variable contains 'true' or 'false' depending whether the
4724 nm extraction should be performed or not, according to the value
4725 of usenm and the flags on the Configure command line.
4727 sched_yield (d_pthread_y.U):
4728 This variable defines the way to yield the execution
4729 of the current thread.
4731 scriptdir (scriptdir.U):
4732 This variable holds the name of the directory in which the user wants
4733 to put publicly scripts for the package in question. It is either
4734 the same directory as for binaries, or a special one that can be
4735 mounted across different architectures, like /usr/share. Programs
4736 must be prepared to deal with ~name expansion.
4738 scriptdirexp (scriptdir.U):
4739 This variable is the same as scriptdir, but is filename expanded
4740 at configuration time, for programs not wanting to bother with it.
4743 This variable is used internally by Configure to determine the
4744 full pathname (if any) of the sed program. After Configure runs,
4745 the value is reset to a plain "sed" and is not useful.
4747 seedfunc (randfunc.U):
4748 Indicates the random number generating seed function.
4749 Values include srand48, srandom, and srand.
4751 selectminbits (selectminbits.U):
4752 This variable holds the minimum number of bits operated by select.
4753 That is, if you do select(n, ...), how many bits at least will be
4754 cleared in the masks if some activity is detected. Usually this
4755 is either n or 32*ceil(n/32), especially many little-endians do
4756 the latter. This is only useful if you have select(), naturally.
4758 selecttype (selecttype.U):
4759 This variable holds the type used for the 2nd, 3rd, and 4th
4760 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4761 is defined, and 'int *' otherwise. This is only useful if you
4762 have select(), naturally.
4765 This variable is defined but not used by Configure.
4766 The value is the empty string and is not useful.
4768 setgrent_r_proto (d_setgrent_r.U):
4769 This variable encodes the prototype of setgrent_r.
4770 It is zero if d_setgrent_r is undef, and one of the
4771 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4774 sethostent_r_proto (d_sethostent_r.U):
4775 This variable encodes the prototype of sethostent_r.
4776 It is zero if d_sethostent_r is undef, and one of the
4777 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4780 setlocale_r_proto (d_setlocale_r.U):
4781 This variable encodes the prototype of setlocale_r.
4782 It is zero if d_setlocale_r is undef, and one of the
4783 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4786 setnetent_r_proto (d_setnetent_r.U):
4787 This variable encodes the prototype of setnetent_r.
4788 It is zero if d_setnetent_r is undef, and one of the
4789 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4792 setprotoent_r_proto (d_setprotoent_r.U):
4793 This variable encodes the prototype of setprotoent_r.
4794 It is zero if d_setprotoent_r is undef, and one of the
4795 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4798 setpwent_r_proto (d_setpwent_r.U):
4799 This variable encodes the prototype of setpwent_r.
4800 It is zero if d_setpwent_r is undef, and one of the
4801 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4804 setservent_r_proto (d_setservent_r.U):
4805 This variable encodes the prototype of setservent_r.
4806 It is zero if d_setservent_r is undef, and one of the
4807 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4810 sGMTIME_max (time_size.U):
4811 This variable defines the maximum value of the time_t offset that
4812 the system function gmtime () accepts
4814 sGMTIME_min (time_size.U):
4815 This variable defines the minimum value of the time_t offset that
4816 the system function gmtime () accepts
4819 This variable contains the full pathname of the shell used
4820 on this system to execute Bourne shell scripts. Usually, this will be
4821 /bin/sh, though it's possible that some systems will have /bin/ksh,
4822 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4824 This unit comes before Options.U, so you can't set sh with a '-D'
4825 option, though you can override this (and startsh)
4826 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4829 This variable is defined but not used by Configure.
4830 The value is the empty string and is not useful.
4832 sharpbang (spitshell.U):
4833 This variable contains the string #! if this system supports that
4836 shmattype (d_shmat.U):
4837 This symbol contains the type of pointer returned by shmat().
4838 It can be 'void *' or 'char *'.
4840 shortsize (intsize.U):
4841 This variable contains the value of the SHORTSIZE symbol which
4842 indicates to the C program how many bytes there are in a short.
4844 shrpenv (libperl.U):
4845 If the user builds a shared libperl.so, then we need to tell the
4846 'perl' executable where it will be able to find the installed libperl.so.
4847 One way to do this on some systems is to set the environment variable
4848 LD_RUN_PATH to the directory that will be the final location of the
4849 shared libperl.so. The makefile can use this with something like
4850 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4852 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4855 See the main perl Makefile.SH for actual working usage.
4856 Alternatively, we might be able to use a command line option such
4857 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4858 $archlibexp/CORE (Linux).
4860 shsharp (spitshell.U):
4861 This variable tells further Configure units whether your sh can
4864 sig_count (sig_name.U):
4865 This variable holds a number larger than the largest valid
4866 signal number. This is usually the same as the NSIG macro.
4868 sig_name (sig_name.U):
4869 This variable holds the signal names, space separated. The leading
4870 SIG in signal name is removed. A ZERO is prepended to the list.
4871 This is currently not used, sig_name_init is used instead.
4873 sig_name_init (sig_name.U):
4874 This variable holds the signal names, enclosed in double quotes and
4875 separated by commas, suitable for use in the SIG_NAME definition
4876 below. A "ZERO" is prepended to the list, and the list is
4877 terminated with a plain 0. The leading SIG in signal names
4878 is removed. See sig_num.
4880 sig_num (sig_name.U):
4881 This variable holds the signal numbers, space separated. A ZERO is
4882 prepended to the list (corresponding to the fake SIGZERO).
4883 Those numbers correspond to the value of the signal listed
4884 in the same place within the sig_name list.
4885 This is currently not used, sig_num_init is used instead.
4887 sig_num_init (sig_name.U):
4888 This variable holds the signal numbers, enclosed in double quotes and
4889 separated by commas, suitable for use in the SIG_NUM definition
4890 below. A "ZERO" is prepended to the list, and the list is
4891 terminated with a plain 0.
4893 sig_size (sig_name.U):
4894 This variable contains the number of elements of the sig_name
4897 signal_t (d_voidsig.U):
4898 This variable holds the type of the signal handler (void or int).
4900 sitearch (sitearch.U):
4901 This variable contains the eventual value of the SITEARCH symbol,
4902 which is the name of the private library for this package. It may
4903 have a ~ on the front. It is up to the makefile to eventually create
4904 this directory while performing installation (with ~ substitution).
4905 The standard distribution will put nothing in this directory.
4906 After perl has been installed, users may install their own local
4907 architecture-dependent modules in this directory with
4908 MakeMaker Makefile.PL
4909 or equivalent. See INSTALL for details.
4911 sitearchexp (sitearch.U):
4912 This variable is the ~name expanded version of sitearch, so that you
4913 may use it directly in Makefiles or shell scripts.
4915 sitebin (sitebin.U):
4916 This variable holds the name of the directory in which the user wants
4917 to put add-on publicly executable files for the package in question. It
4918 is most often a local directory such as /usr/local/bin. Programs using
4919 this variable must be prepared to deal with ~name substitution.
4920 The standard distribution will put nothing in this directory.
4921 After perl has been installed, users may install their own local
4922 executables in this directory with
4923 MakeMaker Makefile.PL
4924 or equivalent. See INSTALL for details.
4926 sitebinexp (sitebin.U):
4927 This is the same as the sitebin variable, but is filename expanded at
4928 configuration time, for use in your makefiles.
4930 sitehtml1dir (sitehtml1dir.U):
4931 This variable contains the name of the directory in which site-specific
4932 html source pages are to be put. It is the responsibility of the
4933 Makefile.SH to get the value of this into the proper command.
4934 You must be prepared to do the ~name expansion yourself.
4935 The standard distribution will put nothing in this directory.
4936 After perl has been installed, users may install their own local
4937 html pages in this directory with
4938 MakeMaker Makefile.PL
4939 or equivalent. See INSTALL for details.
4941 sitehtml1direxp (sitehtml1dir.U):
4942 This variable is the same as the sitehtml1dir variable, but is filename
4943 expanded at configuration time, for convenient use in makefiles.
4945 sitehtml3dir (sitehtml3dir.U):
4946 This variable contains the name of the directory in which site-specific
4947 library html source pages are to be put. It is the responsibility of the
4948 Makefile.SH to get the value of this into the proper command.
4949 You must be prepared to do the ~name expansion yourself.
4950 The standard distribution will put nothing in this directory.
4951 After perl has been installed, users may install their own local
4952 library html pages in this directory with
4953 MakeMaker Makefile.PL
4954 or equivalent. See INSTALL for details.
4956 sitehtml3direxp (sitehtml3dir.U):
4957 This variable is the same as the sitehtml3dir variable, but is filename
4958 expanded at configuration time, for convenient use in makefiles.
4960 sitelib (sitelib.U):
4961 This variable contains the eventual value of the SITELIB symbol,
4962 which is the name of the private library for this package. It may
4963 have a ~ on the front. It is up to the makefile to eventually create
4964 this directory while performing installation (with ~ substitution).
4965 The standard distribution will put nothing in this directory.
4966 After perl has been installed, users may install their own local
4967 architecture-independent modules in this directory with
4968 MakeMaker Makefile.PL
4969 or equivalent. See INSTALL for details.
4971 sitelib_stem (sitelib.U):
4972 This variable is $sitelibexp with any trailing version-specific component
4973 removed. The elements in inc_version_list (inc_version_list.U) can
4974 be tacked onto this variable to generate a list of directories to search.
4976 sitelibexp (sitelib.U):
4977 This variable is the ~name expanded version of sitelib, so that you
4978 may use it directly in Makefiles or shell scripts.
4980 siteman1dir (siteman1dir.U):
4981 This variable contains the name of the directory in which site-specific
4982 manual source pages are to be put. It is the responsibility of the
4983 Makefile.SH to get the value of this into the proper command.
4984 You must be prepared to do the ~name expansion yourself.
4985 The standard distribution will put nothing in this directory.
4986 After perl has been installed, users may install their own local
4987 man1 pages in this directory with
4988 MakeMaker Makefile.PL
4989 or equivalent. See INSTALL for details.
4991 siteman1direxp (siteman1dir.U):
4992 This variable is the same as the siteman1dir variable, but is filename
4993 expanded at configuration time, for convenient use in makefiles.
4995 siteman3dir (siteman3dir.U):
4996 This variable contains the name of the directory in which site-specific
4997 library man source pages are to be put. It is the responsibility of the
4998 Makefile.SH to get the value of this into the proper command.
4999 You must be prepared to do the ~name expansion yourself.
5000 The standard distribution will put nothing in this directory.
5001 After perl has been installed, users may install their own local
5002 man3 pages in this directory with
5003 MakeMaker Makefile.PL
5004 or equivalent. See INSTALL for details.
5006 siteman3direxp (siteman3dir.U):
5007 This variable is the same as the siteman3dir variable, but is filename
5008 expanded at configuration time, for convenient use in makefiles.
5010 siteprefix (siteprefix.U):
5011 This variable holds the full absolute path of the directory below
5012 which the user will install add-on packages.
5013 See INSTALL for usage and examples.
5015 siteprefixexp (siteprefix.U):
5016 This variable holds the full absolute path of the directory below
5017 which the user will install add-on packages. Derived from siteprefix.
5019 sitescript (sitescript.U):
5020 This variable holds the name of the directory in which the user wants
5021 to put add-on publicly executable files for the package in question. It
5022 is most often a local directory such as /usr/local/bin. Programs using
5023 this variable must be prepared to deal with ~name substitution.
5024 The standard distribution will put nothing in this directory.
5025 After perl has been installed, users may install their own local
5026 scripts in this directory with
5027 MakeMaker Makefile.PL
5028 or equivalent. See INSTALL for details.
5030 sitescriptexp (sitescript.U):
5031 This is the same as the sitescript variable, but is filename expanded at
5032 configuration time, for use in your makefiles.
5034 sizesize (sizesize.U):
5035 This variable contains the size of a sizetype in bytes.
5037 sizetype (sizetype.U):
5038 This variable defines sizetype to be something like size_t,
5039 unsigned long, or whatever type is used to declare length
5040 parameters for string functions.
5043 This variable is defined but not used by Configure.
5044 The value is the empty string and is not useful.
5046 sLOCALTIME_max (time_size.U):
5047 This variable defines the maximum value of the time_t offset that
5048 the system function localtime () accepts
5050 sLOCALTIME_min (time_size.U):
5051 This variable defines the minimum value of the time_t offset that
5052 the system function localtime () accepts
5055 This variable is defined but not used by Configure.
5056 The value is the empty string and is not useful.
5059 This variable holds the extension used to identify shared libraries
5060 (also known as shared objects) on the system. Usually set to 'so'.
5062 sockethdr (d_socket.U):
5063 This variable has any cpp '-I' flags needed for socket support.
5065 socketlib (d_socket.U):
5066 This variable has the names of any libraries needed for socket support.
5068 socksizetype (socksizetype.U):
5069 This variable holds the type used for the size argument
5070 for various socket calls like accept. Usual values include
5071 socklen_t, size_t, and int.
5074 This variable is used internally by Configure to determine the
5075 full pathname (if any) of the sort program. After Configure runs,
5076 the value is reset to a plain "sort" and is not useful.
5078 spackage (package.U):
5079 This variable contains the name of the package being constructed,
5080 with the first letter uppercased, i.e. suitable for starting
5083 spitshell (spitshell.U):
5084 This variable contains the command necessary to spit out a runnable
5085 shell on this system. It is either cat or a grep '-v' for # comments.
5087 sPRId64 (quadfio.U):
5088 This variable, if defined, contains the string used by stdio to
5089 format 64-bit decimal numbers (format 'd') for output.
5091 sPRIeldbl (longdblfio.U):
5092 This variable, if defined, contains the string used by stdio to
5093 format long doubles (format 'e') for output.
5095 sPRIEUldbl (longdblfio.U):
5096 This variable, if defined, contains the string used by stdio to
5097 format long doubles (format 'E') for output.
5098 The 'U' in the name is to separate this from sPRIeldbl so that even
5099 case-blind systems can see the difference.
5101 sPRIfldbl (longdblfio.U):
5102 This variable, if defined, contains the string used by stdio to
5103 format long doubles (format 'f') for output.
5105 sPRIFUldbl (longdblfio.U):
5106 This variable, if defined, contains the string used by stdio to
5107 format long doubles (format 'F') for output.
5108 The 'U' in the name is to separate this from sPRIfldbl so that even
5109 case-blind systems can see the difference.
5111 sPRIgldbl (longdblfio.U):
5112 This variable, if defined, contains the string used by stdio to
5113 format long doubles (format 'g') for output.
5115 sPRIGUldbl (longdblfio.U):
5116 This variable, if defined, contains the string used by stdio to
5117 format long doubles (format 'G') for output.
5118 The 'U' in the name is to separate this from sPRIgldbl so that even
5119 case-blind systems can see the difference.
5121 sPRIi64 (quadfio.U):
5122 This variable, if defined, contains the string used by stdio to
5123 format 64-bit decimal numbers (format 'i') for output.
5125 sPRIo64 (quadfio.U):
5126 This variable, if defined, contains the string used by stdio to
5127 format 64-bit octal numbers (format 'o') for output.
5129 sPRIu64 (quadfio.U):
5130 This variable, if defined, contains the string used by stdio to
5131 format 64-bit unsigned decimal numbers (format 'u') for output.
5133 sPRIx64 (quadfio.U):
5134 This variable, if defined, contains the string used by stdio to
5135 format 64-bit hexadecimal numbers (format 'x') for output.
5137 sPRIXU64 (quadfio.U):
5138 This variable, if defined, contains the string used by stdio to
5139 format 64-bit hExADECimAl numbers (format 'X') for output.
5140 The 'U' in the name is to separate this from sPRIx64 so that even
5141 case-blind systems can see the difference.
5143 srand48_r_proto (d_srand48_r.U):
5144 This variable encodes the prototype of srand48_r.
5145 It is zero if d_srand48_r is undef, and one of the
5146 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
5149 srandom_r_proto (d_srandom_r.U):
5150 This variable encodes the prototype of srandom_r.
5151 It is zero if d_srandom_r is undef, and one of the
5152 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
5156 This variable holds the (possibly relative) path of the package source.
5157 It is up to the Makefile to use this variable and set VPATH accordingly
5158 to find the sources remotely. Use $pkgsrc to have an absolute path.
5160 sSCNfldbl (longdblfio.U):
5161 This variable, if defined, contains the string used by stdio to
5162 format long doubles (format 'f') for input.
5164 ssizetype (ssizetype.U):
5165 This variable defines ssizetype to be something like ssize_t,
5166 long or int. It is used by functions that return a count
5167 of bytes or an error condition. It must be a signed type.
5168 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
5170 st_ino_sign (st_ino_def.U):
5171 This variable contains the signedness of struct stat's st_ino.
5172 1 for unsigned, -1 for signed.
5174 st_ino_size (st_ino_def.U):
5175 This variable contains the size of struct stat's st_ino in bytes.
5177 startperl (startperl.U):
5178 This variable contains the string to put on the front of a perl
5179 script to make sure (hopefully) that it runs with perl and not some
5180 shell. Of course, that leading line must be followed by the classical
5182 eval 'exec perl -S $0 ${1+"$@"}'
5183 if $running_under_some_shell;
5184 to guarantee perl startup should the shell execute the script. Note
5185 that this magic incantation is not understood by csh.
5187 startsh (startsh.U):
5188 This variable contains the string to put on the front of a shell
5189 script to make sure (hopefully) that it runs with sh and not some
5192 static_ext (Extensions.U):
5193 This variable holds a list of XS extension files we want to
5194 link statically into the package. It is used by Makefile.
5196 stdchar (stdchar.U):
5197 This variable conditionally defines STDCHAR to be the type of char
5198 used in stdio.h. It has the values "unsigned char" or "char".
5200 stdio_base (d_stdstdio.U):
5201 This variable defines how, given a FILE pointer, fp, to access the
5202 _base field (or equivalent) of stdio.h's FILE structure. This will
5203 be used to define the macro FILE_base(fp).
5205 stdio_bufsiz (d_stdstdio.U):
5206 This variable defines how, given a FILE pointer, fp, to determine
5207 the number of bytes store in the I/O buffer pointer to by the
5208 _base field (or equivalent) of stdio.h's FILE structure. This will
5209 be used to define the macro FILE_bufsiz(fp).
5211 stdio_cnt (d_stdstdio.U):
5212 This variable defines how, given a FILE pointer, fp, to access the
5213 _cnt field (or equivalent) of stdio.h's FILE structure. This will
5214 be used to define the macro FILE_cnt(fp).
5216 stdio_filbuf (d_stdstdio.U):
5217 This variable defines how, given a FILE pointer, fp, to tell
5218 stdio to refill its internal buffers (?). This will
5219 be used to define the macro FILE_filbuf(fp).
5221 stdio_ptr (d_stdstdio.U):
5222 This variable defines how, given a FILE pointer, fp, to access the
5223 _ptr field (or equivalent) of stdio.h's FILE structure. This will
5224 be used to define the macro FILE_ptr(fp).
5226 stdio_stream_array (stdio_streams.U):
5227 This variable tells the name of the array holding the stdio streams.
5228 Usual values include _iob, __iob, and __sF.
5230 strerror_r_proto (d_strerror_r.U):
5231 This variable encodes the prototype of strerror_r.
5232 It is zero if d_strerror_r is undef, and one of the
5233 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
5236 strings (i_string.U):
5237 This variable holds the full path of the string header that will be
5238 used. Typically /usr/include/string.h or /usr/include/strings.h.
5241 This variable is defined but not used by Configure.
5242 The value is the empty string and is not useful.
5244 subversion (patchlevel.U):
5245 The subversion level of this package.
5246 The value of subversion comes from the patchlevel.h file.
5247 In a version number such as 5.6.1, this is the "1".
5248 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
5249 This is unique to perl.
5252 This variable holds the place where the manual is located on this
5253 system. It is not the place where the user wants to put his manual
5254 pages. Rather it is the place where Configure may look to find manual
5255 for unix commands (section 1 of the manual usually). See mansrc.
5257 sysroot (Sysroot.U):
5258 This variable is empty unless supplied by the Configure user.
5259 It can contain a path to an alternative root directory, under which
5260 headers and libraries for the compilation target can be found. This
5261 is generally used when cross-compiling using a gcc-like compiler.
5264 This variable is defined but not used by Configure.
5265 The value is the empty string and is not useful.
5268 This variable is defined but not used by Configure.
5269 The value is the empty string and is not useful.
5271 targetarch (Cross.U):
5272 If cross-compiling, this variable contains the target architecture.
5273 If not, this will be empty.
5275 targetdir (Cross.U):
5276 This variable contains a path that will be created on the target
5277 host using targetmkdir, and then used to copy the cross-compiled
5278 executables to. Defaults to '/tmp' if not set.
5280 targetenv (Cross.U):
5281 If cross-compiling, this variable can be used to modify the
5282 environment on the target system.
5283 However, how and where it's used, and even if it's used at all, is
5284 entirely dependent on both the transport mechanism (targetrun) and
5285 what the target system is. Unless the relevant documentation says
5286 otherwise, it is genereally not useful.
5288 targethost (Cross.U):
5289 This variable contains the name of a separate host machine that
5290 can be used to run compiled test programs and perl tests on.
5291 Set to empty string if not in use.
5293 targetmkdir (Cross.U):
5294 This variable contains the command used by Configure to create a
5295 new directory on the target host.
5297 targetport (Cross.U):
5298 This variable contains the number of a network port to be used to
5299 connect to the host in targethost, if unset defaults to 22 for ssh.
5302 If cross-compiling, this variable contains the location of sh on the
5304 If not, this will be the same as $sh.
5307 This variable is defined but not used by Configure.
5308 The value is the empty string and is not useful.
5311 This variable is defined but not used by Configure.
5312 The value is the empty string and is not useful.
5315 This variable is used internally by Configure to determine the
5316 full pathname (if any) of the test program. After Configure runs,
5317 the value is reset to a plain "test" and is not useful.
5319 timeincl (i_time.U):
5320 This variable holds the full path of the included time header(s).
5322 timetype (d_time.U):
5323 This variable holds the type returned by time(). It can be long,
5324 or time_t on BSD sites (in which case <sys/types.h> should be
5325 included). Anyway, the type Time_t should be used.
5327 tmpnam_r_proto (d_tmpnam_r.U):
5328 This variable encodes the prototype of tmpnam_r.
5329 It is zero if d_tmpnam_r is undef, and one of the
5330 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
5334 This variable contains the command used by Configure
5335 to copy to from the target host. Useful and available
5336 only during Perl build.
5337 The string ':' if not cross-compiling.
5340 This variable is used internally by Configure to determine the
5341 full pathname (if any) of the touch program. After Configure runs,
5342 the value is reset to a plain "touch" and is not useful.
5345 This variable is used internally by Configure to determine the
5346 full pathname (if any) of the tr program. After Configure runs,
5347 the value is reset to a plain "tr" and is not useful.
5350 This variable contains the value to be passed to the tr(1)
5351 command to transliterate a newline. Typical values are
5352 '\012' and '\n'. This is needed for EBCDIC systems where
5353 newline is not necessarily '\012'.
5356 This variable is defined but not used by Configure.
5357 The value is the empty string and is not useful.
5359 ttyname_r_proto (d_ttyname_r.U):
5360 This variable encodes the prototype of ttyname_r.
5361 It is zero if d_ttyname_r is undef, and one of the
5362 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
5366 This variable is the size of an U16 in bytes.
5369 This variable contains the C type used for Perl's U16.
5372 This variable is the size of an U32 in bytes.
5375 This variable contains the C type used for Perl's U32.
5378 This variable is the size of an U64 in bytes.
5381 This variable contains the C type used for Perl's U64.
5384 This variable is the size of an U8 in bytes.
5387 This variable contains the C type used for Perl's U8.
5390 This variable contains the format string used for printing a Uid_t.
5392 uidsign (uidsign.U):
5393 This variable contains the signedness of a uidtype.
5394 1 for unsigned, -1 for signed.
5396 uidsize (uidsize.U):
5397 This variable contains the size of a uidtype in bytes.
5399 uidtype (uidtype.U):
5400 This variable defines Uid_t to be something like uid_t, int,
5401 ushort, or whatever type is used to declare user ids in the kernel.
5404 This variable is used internally by Configure to determine the
5405 full pathname (if any) of the uname program. After Configure runs,
5406 the value is reset to a plain "uname" and is not useful.
5409 This variable is used internally by Configure to determine the
5410 full pathname (if any) of the uniq program. After Configure runs,
5411 the value is reset to a plain "uniq" and is not useful.
5413 uquadtype (quadtype.U):
5414 This variable defines Uquad_t to be something like unsigned long,
5415 unsigned int, unsigned long long, uint64_t, or whatever type is
5416 used for 64-bit integers.
5418 use5005threads (usethreads.U):
5419 This variable conditionally defines the USE_5005THREADS symbol,
5420 and indicates that Perl should be built to use the 5.005-based
5421 threading implementation. Only valid up to 5.8.x.
5423 use64bitall (use64bits.U):
5424 This variable conditionally defines the USE_64_BIT_ALL symbol,
5425 and indicates that 64-bit integer types should be used
5426 when available. The maximal possible
5427 64-bitness is employed: LP64 or ILP64, meaning that you will
5428 be able to use more than 2 gigabytes of memory. This mode is
5429 even more binary incompatible than USE_64_BIT_INT. You may not
5430 be able to run the resulting executable in a 32-bit CPU at all or
5431 you may need at least to reboot your OS to 64-bit mode.
5433 use64bitint (use64bits.U):
5434 This variable conditionally defines the USE_64_BIT_INT symbol,
5435 and indicates that 64-bit integer types should be used
5436 when available. The minimal possible 64-bitness
5437 is employed, just enough to get 64-bit integers into Perl.
5438 This may mean using for example "long longs", while your memory
5439 may still be limited to 2 gigabytes.
5441 usecbacktrace (usebacktrace.U):
5442 This variable indicates whether we are compiling with backtrace
5445 usecrosscompile (Cross.U):
5446 This variable conditionally defines the USE_CROSS_COMPILE symbol,
5447 and indicates that Perl has been cross-compiled.
5450 This variable indicates that Perl was configured with development
5451 features enabled. This should not be done for production builds.
5454 This variable indicates if the system supports dynamic
5455 loading of some sort. See also dlsrc and dlobj.
5457 usedtrace (usedtrace.U):
5458 This variable indicates whether we are compiling with dtrace
5459 support. See also dtrace.
5461 usefaststdio (usefaststdio.U):
5462 This variable conditionally defines the USE_FAST_STDIO symbol,
5463 and indicates that Perl should be built to use 'fast stdio'.
5464 Defaults to define in Perls 5.8 and earlier, to undef later.
5466 useithreads (usethreads.U):
5467 This variable conditionally defines the USE_ITHREADS symbol,
5468 and indicates that Perl should be built to use the interpreter-based
5469 threading implementation.
5471 usekernprocpathname (usekernprocpathname.U):
5472 This variable, indicates that we can use sysctl with
5473 KERN_PROC_PATHNAME to get a full path for the executable, and hence
5474 convert $^X to an absolute path.
5476 uselargefiles (uselfs.U):
5477 This variable conditionally defines the USE_LARGE_FILES symbol,
5478 and indicates that large file interfaces should be used when
5481 uselongdouble (uselongdbl.U):
5482 This variable conditionally defines the USE_LONG_DOUBLE symbol,
5483 and indicates that long doubles should be used when available.
5485 usemallocwrap (mallocsrc.U):
5486 This variable contains y if we are wrapping malloc to prevent
5487 integer overflow during size calculations.
5489 usemorebits (usemorebits.U):
5490 This variable conditionally defines the USE_MORE_BITS symbol,
5491 and indicates that explicit 64-bit interfaces and long doubles
5492 should be used when available.
5494 usemultiplicity (usemultiplicity.U):
5495 This variable conditionally defines the MULTIPLICITY symbol,
5496 and indicates that Perl should be built to use multiplicity.
5498 usemymalloc (mallocsrc.U):
5499 This variable contains y if the malloc that comes with this package
5500 is desired over the system's version of malloc. People often include
5501 special versions of malloc for efficiency, but such versions are often
5502 less portable. See also mallocsrc and mallocobj.
5503 If this is 'y', then -lmalloc is removed from $libs.
5506 This variable contains 'true' or 'false' depending whether the
5507 nm extraction is wanted or not.
5509 usensgetexecutablepath (usensgetexecutablepath.U):
5510 This symbol, if defined, indicates that we can use _NSGetExecutablePath
5511 and realpath to get a full path for the executable, and hence convert
5512 $^X to an absolute path.
5514 useopcode (Extensions.U):
5515 This variable holds either 'true' or 'false' to indicate
5516 whether the Opcode extension should be used. The sole
5517 use for this currently is to allow an easy mechanism
5518 for users to skip the Opcode extension from the Configure
5521 useperlio (useperlio.U):
5522 This variable conditionally defines the USE_PERLIO symbol,
5523 and indicates that the PerlIO abstraction should be
5526 useposix (Extensions.U):
5527 This variable holds either 'true' or 'false' to indicate
5528 whether the POSIX extension should be used. The sole
5529 use for this currently is to allow an easy mechanism
5530 for hints files to indicate that POSIX will not compile
5531 on a particular system.
5533 usequadmath (usequadmath.U):
5534 This variable conditionally defines the USE_QUADMATH symbol,
5535 and indicates that the quadmath library __float128 long doubles
5536 should be used when available.
5538 usereentrant (usethreads.U):
5539 This variable conditionally defines the USE_REENTRANT_API symbol,
5540 which indicates that the thread code may try to use the various
5541 _r versions of library functions. This is only potentially
5542 meaningful if usethreads is set and is very experimental, it is
5543 not even prompted for.
5545 userelocatableinc (bin.U):
5546 This variable is set to true to indicate that perl should relocate
5547 @INC entries at runtime based on the path to the perl binary.
5548 Any @INC paths starting ".../" are relocated relative to the directory
5549 containing the perl binary, and a logical cleanup of the path is then
5550 made around the join point (removing "dir/../" pairs)
5552 useshrplib (libperl.U):
5553 This variable is set to 'true' if the user wishes
5554 to build a shared libperl, and 'false' otherwise.
5556 usesitecustomize (d_sitecustomize.U):
5557 This variable is set to true when the user requires a mechanism that
5558 allows the sysadmin to add entries to @INC at runtime. This variable
5559 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
5561 usesocks (usesocks.U):
5562 This variable conditionally defines the USE_SOCKS symbol,
5563 and indicates that Perl should be built to use SOCKS.
5565 usethreads (usethreads.U):
5566 This variable conditionally defines the USE_THREADS symbol,
5567 and indicates that Perl should be built to use threads.
5569 usevendorprefix (vendorprefix.U):
5570 This variable tells whether the vendorprefix
5571 and consequently other vendor* paths are in use.
5573 useversionedarchname (archname.U):
5574 This variable indicates whether to include the $api_versionstring
5575 as a component of the $archname.
5577 usevfork (d_vfork.U):
5578 This variable is set to true when the user accepts to use vfork.
5579 It is set to false when no vfork is available or when the user
5580 explicitly requests not to use vfork.
5583 This variable holds the path of the include files, which is
5584 usually /usr/include. It is mainly used by other Configure units.
5587 This variable is defined but not used by Configure.
5588 The value is the empty string and is not useful.
5590 uvoformat (perlxvf.U):
5591 This variable contains the format string used for printing
5592 a Perl UV as an unsigned octal integer.
5595 This variable is the size of a UV in bytes.
5598 This variable contains the C type used for Perl's UV.
5600 uvuformat (perlxvf.U):
5601 This variable contains the format string used for printing
5602 a Perl UV as an unsigned decimal integer.
5604 uvxformat (perlxvf.U):
5605 This variable contains the format string used for printing
5606 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
5608 uvXUformat (perlxvf.U):
5609 This variable contains the format string used for printing
5610 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
5612 vendorarch (vendorarch.U):
5613 This variable contains the value of the PERL_VENDORARCH symbol.
5614 It may have a ~ on the front.
5615 The standard distribution will put nothing in this directory.
5616 Vendors who distribute perl may wish to place their own
5617 architecture-dependent modules and extensions in this directory with
5618 MakeMaker Makefile.PL INSTALLDIRS=vendor
5619 or equivalent. See INSTALL for details.
5621 vendorarchexp (vendorarch.U):
5622 This variable is the ~name expanded version of vendorarch, so that you
5623 may use it directly in Makefiles or shell scripts.
5625 vendorbin (vendorbin.U):
5626 This variable contains the eventual value of the VENDORBIN symbol.
5627 It may have a ~ on the front.
5628 The standard distribution will put nothing in this directory.
5629 Vendors who distribute perl may wish to place additional
5630 binaries in this directory with
5631 MakeMaker Makefile.PL INSTALLDIRS=vendor
5632 or equivalent. See INSTALL for details.
5634 vendorbinexp (vendorbin.U):
5635 This variable is the ~name expanded version of vendorbin, so that you
5636 may use it directly in Makefiles or shell scripts.
5638 vendorhtml1dir (vendorhtml1dir.U):
5639 This variable contains the name of the directory for html
5640 pages. It may have a ~ on the front.
5641 The standard distribution will put nothing in this directory.
5642 Vendors who distribute perl may wish to place their own
5643 html pages in this directory with
5644 MakeMaker Makefile.PL INSTALLDIRS=vendor
5645 or equivalent. See INSTALL for details.
5647 vendorhtml1direxp (vendorhtml1dir.U):
5648 This variable is the ~name expanded version of vendorhtml1dir, so that you
5649 may use it directly in Makefiles or shell scripts.
5651 vendorhtml3dir (vendorhtml3dir.U):
5652 This variable contains the name of the directory for html
5653 library pages. It may have a ~ on the front.
5654 The standard distribution will put nothing in this directory.
5655 Vendors who distribute perl may wish to place their own
5656 html pages for modules and extensions in this directory with
5657 MakeMaker Makefile.PL INSTALLDIRS=vendor
5658 or equivalent. See INSTALL for details.
5660 vendorhtml3direxp (vendorhtml3dir.U):
5661 This variable is the ~name expanded version of vendorhtml3dir, so that you
5662 may use it directly in Makefiles or shell scripts.
5664 vendorlib (vendorlib.U):
5665 This variable contains the eventual value of the VENDORLIB symbol,
5666 which is the name of the private library for this package.
5667 The standard distribution will put nothing in this directory.
5668 Vendors who distribute perl may wish to place their own
5669 modules in this directory with
5670 MakeMaker Makefile.PL INSTALLDIRS=vendor
5671 or equivalent. See INSTALL for details.
5673 vendorlib_stem (vendorlib.U):
5674 This variable is $vendorlibexp with any trailing version-specific component
5675 removed. The elements in inc_version_list (inc_version_list.U) can
5676 be tacked onto this variable to generate a list of directories to search.
5678 vendorlibexp (vendorlib.U):
5679 This variable is the ~name expanded version of vendorlib, so that you
5680 may use it directly in Makefiles or shell scripts.
5682 vendorman1dir (vendorman1dir.U):
5683 This variable contains the name of the directory for man1
5684 pages. It may have a ~ on the front.
5685 The standard distribution will put nothing in this directory.
5686 Vendors who distribute perl may wish to place their own
5687 man1 pages in this directory with
5688 MakeMaker Makefile.PL INSTALLDIRS=vendor
5689 or equivalent. See INSTALL for details.
5691 vendorman1direxp (vendorman1dir.U):
5692 This variable is the ~name expanded version of vendorman1dir, so that you
5693 may use it directly in Makefiles or shell scripts.
5695 vendorman3dir (vendorman3dir.U):
5696 This variable contains the name of the directory for man3
5697 pages. It may have a ~ on the front.
5698 The standard distribution will put nothing in this directory.
5699 Vendors who distribute perl may wish to place their own
5700 man3 pages in this directory with
5701 MakeMaker Makefile.PL INSTALLDIRS=vendor
5702 or equivalent. See INSTALL for details.
5704 vendorman3direxp (vendorman3dir.U):
5705 This variable is the ~name expanded version of vendorman3dir, so that you
5706 may use it directly in Makefiles or shell scripts.
5708 vendorprefix (vendorprefix.U):
5709 This variable holds the full absolute path of the directory below
5710 which the vendor will install add-on packages.
5711 See INSTALL for usage and examples.
5713 vendorprefixexp (vendorprefix.U):
5714 This variable holds the full absolute path of the directory below
5715 which the vendor will install add-on packages. Derived from vendorprefix.
5717 vendorscript (vendorscript.U):
5718 This variable contains the eventual value of the VENDORSCRIPT symbol.
5719 It may have a ~ on the front.
5720 The standard distribution will put nothing in this directory.
5721 Vendors who distribute perl may wish to place additional
5722 executable scripts in this directory with
5723 MakeMaker Makefile.PL INSTALLDIRS=vendor
5724 or equivalent. See INSTALL for details.
5726 vendorscriptexp (vendorscript.U):
5727 This variable is the ~name expanded version of vendorscript, so that you
5728 may use it directly in Makefiles or shell scripts.
5730 version (patchlevel.U):
5731 The full version number of this package, such as 5.6.1 (or 5_6_1).
5732 This combines revision, patchlevel, and subversion to get the
5733 full version number, including any possible subversions.
5734 This is suitable for use as a directory name, and hence is
5735 filesystem dependent.
5737 version_patchlevel_string (patchlevel.U):
5738 This is a string combining version, subversion and
5739 perl_patchlevel (if perl_patchlevel is non-zero).
5740 It is typically something like
5741 'version 7 subversion 1' or
5742 'version 7 subversion 1 patchlevel 11224'
5743 It is computed here to avoid duplication of code in myconfig.SH
5746 versiononly (versiononly.U):
5747 If set, this symbol indicates that only the version-specific
5748 components of a perl installation should be installed.
5749 This may be useful for making a test installation of a new
5750 version without disturbing the existing installation.
5751 Setting versiononly is equivalent to setting installperl's -v option.
5752 In particular, the non-versioned scripts and programs such as
5753 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5754 (see INSTALL for a more complete list). Nor are the man
5756 Usually, this is undef.
5759 This variable is defined but not used by Configure.
5760 The value is the empty string and is not useful.
5763 This variable holds extra path (space-separated) used to find
5764 libraries on this platform, for example CPU-specific libraries
5765 (on multi-CPU platforms) may be listed here.
5768 This variable holds the name of the compiler compiler we
5769 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5772 This variable contains any additional yacc flags desired by the
5773 user. It is up to the Makefile to use this.
5776 This variable is defined but not used by Configure.
5777 The value is the empty string and is not useful.
5780 This variable is used internally by Configure to determine the
5781 full pathname (if any) of the zip program. After Configure runs,
5782 the value is reset to a plain "zip" and is not useful.