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_add_overflow (d_builtin_overflow.U):
508 This variable conditionally defines HAS_BUILTIN_ADD_OVERFLOW, which
509 indicates that the compiler supports __builtin_add_overflow(x,y,&z)
510 for safely adding x and y into z while checking for overflow.
512 d_builtin_choose_expr (d_builtin.U):
513 This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
514 indicates that the compiler supports __builtin_choose_expr(x,y,z).
515 This built-in function is analogous to the "x?y:z" operator in C,
516 except that the expression returned has its type unaltered by
517 promotion rules. Also, the built-in function does not evaluate
518 the expression that was not chosen.
520 d_builtin_expect (d_builtin.U):
521 This conditionally defines HAS_BUILTIN_EXPECT, which indicates
522 that the compiler supports __builtin_expect(exp,c). You may use
523 __builtin_expect to provide the compiler with branch prediction
526 d_builtin_mul_overflow (d_builtin_overflow.U):
527 This variable conditionally defines HAS_BUILTIN_MUL_OVERFLOW, which
528 indicates that the compiler supports __builtin_mul_overflow(x,y,&z)
529 for safely multiplying x and y into z while checking for overflow.
531 d_builtin_sub_overflow (d_builtin_overflow.U):
532 This variable conditionally defines HAS_BUILTIN_SUB_OVERFLOW, which
533 indicates that the compiler supports __builtin_sub_overflow(x,y,&z)
534 for safely subtracting y from x into z while checking for overflow.
536 d_c99_variadic_macros (d_c99_variadic.U):
537 This variable conditionally defines the HAS_C99_VARIADIC_MACROS
538 symbol, which indicates to the C program that C99 variadic macros
541 d_casti32 (d_casti32.U):
542 This variable conditionally defines CASTI32, which indicates
543 whether the C compiler can cast large floats to 32-bit ints.
545 d_castneg (d_castneg.U):
546 This variable conditionally defines CASTNEG, which indicates
547 whether the C compiler can cast negative float to unsigned.
550 This variable conditionally defines the HAS_CBRT symbol, which
551 indicates to the C program that the cbrt() (cube root) function
555 This variable conditionally defines the HAS_CHOWN symbol, which
556 indicates to the C program that the chown() routine is available.
558 d_chroot (d_chroot.U):
559 This variable conditionally defines the HAS_CHROOT symbol, which
560 indicates to the C program that the chroot() routine is available.
562 d_chsize (d_chsize.U):
563 This variable conditionally defines the CHSIZE symbol, which
564 indicates to the C program that the chsize() routine is available
565 to truncate files. You might need a -lx to get this routine.
568 This variable conditionally defines the HAS_CLASS symbol, which
569 indicates to the C program that the class() routine is available.
571 d_clearenv (d_clearenv.U):
572 This variable conditionally defines the HAS_CLEARENV symbol, which
573 indicates to the C program that the clearenv () routine is available.
575 d_closedir (d_closedir.U):
576 This variable conditionally defines HAS_CLOSEDIR if closedir() is
579 d_cmsghdr_s (d_cmsghdr_s.U):
580 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
581 which indicates that the struct cmsghdr is supported.
584 This variable conditionally defines the HASCONST symbol, which
585 indicates to the C program that this C compiler knows about the
588 d_copysign (d_copysign.U):
589 This variable conditionally defines the HAS_COPYSIGN symbol, which
590 indicates to the C program that the copysign() routine is available.
592 d_copysignl (d_copysignl.U):
593 This variable conditionally defines the HAS_COPYSIGNL symbol, which
594 indicates to the C program that the copysignl() routine is available.
595 If aintl is also present we can emulate modfl.
597 d_cplusplus (d_cplusplus.U):
598 This variable conditionally defines the USE_CPLUSPLUS symbol, which
599 indicates that a C++ compiler was used to compiled Perl and will be
600 used to compile extensions.
603 This variable conditionally defines the CRYPT symbol, which
604 indicates to the C program that the crypt() routine is available
605 to encrypt passwords and the like.
607 d_crypt_r (d_crypt_r.U):
608 This variable conditionally defines the HAS_CRYPT_R symbol,
609 which indicates to the C program that the crypt_r()
610 routine is available.
613 This variable conditionally defines the CSH symbol, which
614 indicates to the C program that the C-shell exists.
616 d_ctermid (d_ctermid.U):
617 This variable conditionally defines CTERMID if ctermid() is
618 available to generate filename for terminal.
620 d_ctermid_r (d_ctermid_r.U):
621 This variable conditionally defines the HAS_CTERMID_R symbol,
622 which indicates to the C program that the ctermid_r()
623 routine is available.
625 d_ctime64 (d_timefuncs64.U):
626 This variable conditionally defines the HAS_CTIME64 symbol, which
627 indicates to the C program that the ctime64 () routine is available.
629 d_ctime_r (d_ctime_r.U):
630 This variable conditionally defines the HAS_CTIME_R symbol,
631 which indicates to the C program that the ctime_r()
632 routine is available.
634 d_cuserid (d_cuserid.U):
635 This variable conditionally defines the HAS_CUSERID symbol, which
636 indicates to the C program that the cuserid() routine is available
637 to get character login names.
639 d_dbminitproto (d_dbminitproto.U):
640 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
641 which indicates to the C program that the system provides
642 a prototype for the dbminit() function. Otherwise, it is
643 up to the program to supply one.
645 d_difftime (d_difftime.U):
646 This variable conditionally defines the HAS_DIFFTIME symbol, which
647 indicates to the C program that the difftime() routine is available.
649 d_difftime64 (d_timefuncs64.U):
650 This variable conditionally defines the HAS_DIFFTIME64 symbol, which
651 indicates to the C program that the difftime64 () routine is available.
653 d_dir_dd_fd (d_dir_dd_fd.U):
654 This variable conditionally defines the HAS_DIR_DD_FD symbol, which
655 indicates that the DIR directory stream type contains a member
656 variable called dd_fd.
659 This variable conditionally defines the HAS_DIRFD constant,
660 which indicates to the C program that dirfd() is available
661 to return the file descriptor of a directory stream.
663 d_dirnamlen (i_dirent.U):
664 This variable conditionally defines DIRNAMLEN, which indicates
665 to the C program that the length of directory entry names is
666 provided by a d_namelen field.
668 d_dladdr (d_dladdr.U):
669 This variable conditionally defines the HAS_DLADDR symbol, which
670 indicates to the C program that the dladdr() routine is available
671 to get a stack trace.
673 d_dlerror (d_dlerror.U):
674 This variable conditionally defines the HAS_DLERROR symbol, which
675 indicates to the C program that the dlerror() routine is available.
677 d_dlopen (d_dlopen.U):
678 This variable conditionally defines the HAS_DLOPEN symbol, which
679 indicates to the C program that the dlopen() routine is available.
681 d_dlsymun (d_dlsymun.U):
682 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
683 indicates that we need to prepend an underscore to the symbol
684 name before calling dlsym().
686 d_dosuid (d_dosuid.U):
687 This variable conditionally defines the symbol DOSUID, which
688 tells the C program that it should insert setuid emulation code
689 on hosts which have setuid #! scripts disabled.
691 d_double_has_inf (longdblfio.U):
692 This variable conditionally defines the symbol DOUBLE_HAS_INF
693 which indicates that the double type has an infinity.
695 d_double_has_nan (longdblfio.U):
696 This variable conditionally defines the symbol DOUBLE_HAS_NAN
697 which indicates that the double type has a not-a-number.
699 d_double_has_negative_zero (longdblfio.U):
700 This variable conditionally defines the symbol DOUBLE_HAS_NEGATIVE_ZERO
701 which indicates that the double type has a negative zero.
703 d_double_has_subnormals (longdblfio.U):
704 This variable conditionally defines the symbol DOUBLE_HAS_SUBNORMALS
705 which indicates that the double type has subnormals (denormals).
707 d_double_style_cray (longdblfio.U):
708 This variable conditionally defines the symbol DOUBLE_STYLE_CRAY
709 which indicates that the double is the 64-bit CRAY mainframe format.
711 d_double_style_ibm (longdblfio.U):
712 This variable conditionally defines the symbol DOUBLE_STYLE_IBM,
713 which indicates that the double is the 64-bit IBM mainframe format.
715 d_double_style_ieee (longdblfio.U):
716 This variable conditionally defines the symbol DOUBLE_STYLE_IEEE,
717 which indicates that the double is the 64-bit IEEE 754.
719 d_double_style_vax (longdblfio.U):
720 This variable conditionally defines the symbol DOUBLE_STYLE_VAX,
721 which indicates that the double is the 64-bit VAX format D or G.
723 d_drand48_r (d_drand48_r.U):
724 This variable conditionally defines the HAS_DRAND48_R symbol,
725 which indicates to the C program that the drand48_r()
726 routine is available.
728 d_drand48proto (d_drand48proto.U):
729 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
730 which indicates to the C program that the system provides
731 a prototype for the drand48() function. Otherwise, it is
732 up to the program to supply one.
735 This variable conditionally defines HAS_DUP2 if dup2() is
736 available to duplicate file descriptors.
738 d_duplocale (d_newlocale.U):
739 This variable conditionally defines the HAS_DUPLOCALE symbol, which
740 indicates to the C program that the duplocale() routine is available
741 to duplicate a locale object.
743 d_eaccess (d_eaccess.U):
744 This variable conditionally defines the HAS_EACCESS symbol, which
745 indicates to the C program that the eaccess() routine is available.
747 d_endgrent (d_endgrent.U):
748 This variable conditionally defines the HAS_ENDGRENT symbol, which
749 indicates to the C program that the endgrent() routine is available
750 for sequential access of the group database.
752 d_endgrent_r (d_endgrent_r.U):
753 This variable conditionally defines the HAS_ENDGRENT_R symbol,
754 which indicates to the C program that the endgrent_r()
755 routine is available.
757 d_endhent (d_endhent.U):
758 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
759 available to close whatever was being used for host queries.
761 d_endhostent_r (d_endhostent_r.U):
762 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
763 which indicates to the C program that the endhostent_r()
764 routine is available.
766 d_endnent (d_endnent.U):
767 This variable conditionally defines HAS_ENDNETENT if endnetent() is
768 available to close whatever was being used for network queries.
770 d_endnetent_r (d_endnetent_r.U):
771 This variable conditionally defines the HAS_ENDNETENT_R symbol,
772 which indicates to the C program that the endnetent_r()
773 routine is available.
775 d_endpent (d_endpent.U):
776 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
777 available to close whatever was being used for protocol queries.
779 d_endprotoent_r (d_endprotoent_r.U):
780 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
781 which indicates to the C program that the endprotoent_r()
782 routine is available.
784 d_endpwent (d_endpwent.U):
785 This variable conditionally defines the HAS_ENDPWENT symbol, which
786 indicates to the C program that the endpwent() routine is available
787 for sequential access of the passwd database.
789 d_endpwent_r (d_endpwent_r.U):
790 This variable conditionally defines the HAS_ENDPWENT_R symbol,
791 which indicates to the C program that the endpwent_r()
792 routine is available.
794 d_endsent (d_endsent.U):
795 This variable conditionally defines HAS_ENDSERVENT if endservent() is
796 available to close whatever was being used for service queries.
798 d_endservent_r (d_endservent_r.U):
799 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
800 which indicates to the C program that the endservent_r()
801 routine is available.
803 d_eofnblk (nblock_io.U):
804 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
805 when reading from a non-blocking I/O source.
808 This variable conditionally defines the HAS_ERF symbol, which
809 indicates to the C program that the erf() routine is available.
812 This variable conditionally defines the HAS_ERFC symbol, which
813 indicates to the C program that the erfc() routine is available.
816 This variable conditionally defines the symbols EUNICE and VAX, which
817 alerts the C program that it must deal with idiosyncrasies of VMS.
820 This variable conditionally defines the HAS_EXP2 symbol, which
821 indicates to the C program that the exp2() routine is available.
824 This variable conditionally defines the HAS_EXPM1 symbol, which
825 indicates to the C program that the expm1() routine is available.
827 d_faststdio (d_faststdio.U):
828 This variable conditionally defines the HAS_FAST_STDIO symbol,
829 which indicates to the C program that the "fast stdio" is available
830 to manipulate the stdio buffers directly.
832 d_fchdir (d_fchdir.U):
833 This variable conditionally defines the HAS_FCHDIR symbol, which
834 indicates to the C program that the fchdir() routine is available.
836 d_fchmod (d_fchmod.U):
837 This variable conditionally defines the HAS_FCHMOD symbol, which
838 indicates to the C program that the fchmod() routine is available
839 to change mode of opened files.
841 d_fchmodat (d_fsat.U):
842 This variable conditionally defines the HAS_FCHMODAT symbol, which
843 indicates the POSIX fchmodat() function is available.
845 d_fchown (d_fchown.U):
846 This variable conditionally defines the HAS_FCHOWN symbol, which
847 indicates to the C program that the fchown() routine is available
848 to change ownership of opened files.
851 This variable conditionally defines the HAS_FCNTL symbol, and indicates
852 whether the fcntl() function exists
854 d_fcntl_can_lock (d_fcntl_can_lock.U):
855 This variable conditionally defines the FCNTL_CAN_LOCK symbol
856 and indicates whether file locking with fcntl() works.
858 d_fd_macros (d_fd_set.U):
859 This variable contains the eventual value of the HAS_FD_MACROS symbol,
860 which indicates if your C compiler knows about the macros which
861 manipulate an fd_set.
863 d_fd_set (d_fd_set.U):
864 This variable contains the eventual value of the HAS_FD_SET symbol,
865 which indicates if your C compiler knows about the fd_set typedef.
867 d_fdclose (d_fdclose.U):
868 This variable conditionally defines the HAS_FDCLOSE symbol, which
869 indicates to the C program that the fdclose() routine is available.
872 This variable conditionally defines the HAS_FDIM symbol, which
873 indicates to the C program that the fdim() routine is available.
875 d_fds_bits (d_fd_set.U):
876 This variable contains the eventual value of the HAS_FDS_BITS symbol,
877 which indicates if your fd_set typedef contains the fds_bits member.
878 If you have an fd_set typedef, but the dweebs who installed it did
879 a half-fast job and neglected to provide the macros to manipulate
880 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
882 d_fegetround (d_fegetround.U):
883 This variable conditionally defines HAS_FEGETROUND if fegetround() is
884 available to get the floating point rounding mode.
886 d_fgetpos (d_fgetpos.U):
887 This variable conditionally defines HAS_FGETPOS if fgetpos() is
888 available to get the file position indicator.
890 d_finite (d_finite.U):
891 This variable conditionally defines the HAS_FINITE symbol, which
892 indicates to the C program that the finite() routine is available.
894 d_finitel (d_finitel.U):
895 This variable conditionally defines the HAS_FINITEL symbol, which
896 indicates to the C program that the finitel() routine is available.
898 d_flexfnam (d_flexfnam.U):
899 This variable conditionally defines the FLEXFILENAMES symbol, which
900 indicates that the system supports filenames longer than 14 characters.
903 This variable conditionally defines HAS_FLOCK if flock() is
904 available to do file locking.
906 d_flockproto (d_flockproto.U):
907 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
908 which indicates to the C program that the system provides
909 a prototype for the flock() function. Otherwise, it is
910 up to the program to supply one.
913 This variable conditionally defines the HAS_FMA symbol, which
914 indicates to the C program that the fma() routine is available.
917 This variable conditionally defines the HAS_FMAX symbol, which
918 indicates to the C program that the fmax() routine is available.
921 This variable conditionally defines the HAS_FMIN symbol, which
922 indicates to the C program that the fmin() routine is available.
925 This variable conditionally defines the HAS_FORK symbol, which
926 indicates to the C program that the fork() routine is available.
928 d_fp_class (d_fp_class.U):
929 This variable conditionally defines the HAS_FP_CLASS symbol, which
930 indicates to the C program that the fp_class() routine is available.
932 d_fp_classify (d_fpclassify.U):
933 This variable conditionally defines the HAS_FP_CLASSIFY symbol, which
934 indicates to the C program that the fp_classify() routine is available.
936 d_fp_classl (d_fp_classl.U):
937 This variable conditionally defines the HAS_FP_CLASSL symbol, which
938 indicates to the C program that the fp_classl() routine is available.
940 d_fpathconf (d_pathconf.U):
941 This variable conditionally defines the HAS_FPATHCONF symbol, which
942 indicates to the C program that the pathconf() routine is available
943 to determine file-system related limits and options associated
944 with a given open file descriptor.
946 d_fpclass (d_fpclass.U):
947 This variable conditionally defines the HAS_FPCLASS symbol, which
948 indicates to the C program that the fpclass() routine is available.
950 d_fpclassify (d_fpclassify.U):
951 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
952 indicates to the C program that the fpclassify() routine is available.
954 d_fpclassl (d_fpclassl.U):
955 This variable conditionally defines the HAS_FPCLASSL symbol, which
956 indicates to the C program that the fpclassl() routine is available.
958 d_fpgetround (d_fpgetround.U):
959 This variable conditionally defines HAS_FPGETROUND if fpgetround()
960 is available to get the floating point rounding mode.
962 d_fpos64_t (d_fpos64_t.U):
963 This symbol will be defined if the C compiler supports fpos64_t.
965 d_freelocale (d_newlocale.U):
966 This variable conditionally defines the HAS_FREELOCALE symbol, which
967 indicates to the C program that the freelocale() routine is available
968 to deallocates the resources associated with a locale object.
970 d_frexpl (d_frexpl.U):
971 This variable conditionally defines the HAS_FREXPL symbol, which
972 indicates to the C program that the frexpl() routine is available.
974 d_fs_data_s (d_fs_data_s.U):
975 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
976 which indicates that the struct fs_data is supported.
978 d_fseeko (d_fseeko.U):
979 This variable conditionally defines the HAS_FSEEKO symbol, which
980 indicates to the C program that the fseeko() routine is available.
982 d_fsetpos (d_fsetpos.U):
983 This variable conditionally defines HAS_FSETPOS if fsetpos() is
984 available to set the file position indicator.
986 d_fstatfs (d_fstatfs.U):
987 This variable conditionally defines the HAS_FSTATFS symbol, which
988 indicates to the C program that the fstatfs() routine is available.
990 d_fstatvfs (d_statvfs.U):
991 This variable conditionally defines the HAS_FSTATVFS symbol, which
992 indicates to the C program that the fstatvfs() routine is available.
995 This variable conditionally defines the HAS_FSYNC symbol, which
996 indicates to the C program that the fsync() routine is available.
998 d_ftello (d_ftello.U):
999 This variable conditionally defines the HAS_FTELLO symbol, which
1000 indicates to the C program that the ftello() routine is available.
1002 d_ftime (d_ftime.U):
1003 This variable conditionally defines the HAS_FTIME symbol, which indicates
1004 that the ftime() routine exists. The ftime() routine is basically
1005 a sub-second accuracy clock.
1007 d_futimes (d_futimes.U):
1008 This variable conditionally defines the HAS_FUTIMES symbol, which
1009 indicates to the C program that the futimes() routine is available.
1011 d_gai_strerror (d_gai_strerror.U):
1012 This variable conditionally defines the HAS_GAI_STRERROR symbol
1013 if the gai_strerror() routine is available and can be used to
1014 translate error codes returned by getaddrinfo() into human
1017 d_Gconvert (d_gconvert.U):
1018 This variable holds what Gconvert is defined as to convert
1019 floating point numbers into strings. By default, Configure
1020 sets this macro to use the first of gconvert, gcvt, or sprintf
1021 that pass sprintf-%g-like behavior tests. If perl is using
1022 long doubles, the macro uses the first of the following
1023 functions that pass Configure's tests: qgcvt, sprintf (if
1024 Configure knows how to make sprintf format long doubles--see
1025 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
1026 The gconvert_preference and gconvert_ld_preference variables
1027 can be used to alter Configure's preferences, for doubles and
1028 long doubles, respectively. If present, they contain a
1029 space-separated list of one or more of the above function
1030 names in the order they should be tried.
1032 d_Gconvert may be set to override Configure with a platform-
1033 specific function. If this function expects a double, a
1034 different value may need to be set by the uselongdouble.cbu
1035 call-back unit so that long doubles can be formatted without
1038 d_gdbm_ndbm_h_uses_prototypes (i_ndbm.U):
1039 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1040 which indicates that the gdbm-ndbm.h include file uses real ANSI C
1041 prototypes instead of K&R style function declarations. K&R style
1042 declarations are unsupported in C++, so the include file requires
1043 special handling when using a C++ compiler and this variable is
1044 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1045 to get the same information for alternative ndbm.h include files.
1047 d_gdbmndbm_h_uses_prototypes (i_ndbm.U):
1048 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1049 which indicates that the gdbm/ndbm.h include file uses real ANSI C
1050 prototypes instead of K&R style function declarations. K&R style
1051 declarations are unsupported in C++, so the include file requires
1052 special handling when using a C++ compiler and this variable is
1053 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1054 to get the same information for alternative ndbm.h include files.
1056 d_getaddrinfo (d_getaddrinfo.U):
1057 This variable conditionally defines the HAS_GETADDRINFO symbol,
1058 which indicates to the C program that the getaddrinfo() function
1061 d_getcwd (d_getcwd.U):
1062 This variable conditionally defines the HAS_GETCWD symbol, which
1063 indicates to the C program that the getcwd() routine is available
1064 to get the current working directory.
1066 d_getespwnam (d_getespwnam.U):
1067 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
1068 available to retrieve enhanced (shadow) password entries by name.
1070 d_getfsstat (d_getfsstat.U):
1071 This variable conditionally defines the HAS_GETFSSTAT symbol, which
1072 indicates to the C program that the getfsstat() routine is available.
1074 d_getgrent (d_getgrent.U):
1075 This variable conditionally defines the HAS_GETGRENT symbol, which
1076 indicates to the C program that the getgrent() routine is available
1077 for sequential access of the group database.
1079 d_getgrent_r (d_getgrent_r.U):
1080 This variable conditionally defines the HAS_GETGRENT_R symbol,
1081 which indicates to the C program that the getgrent_r()
1082 routine is available.
1084 d_getgrgid_r (d_getgrgid_r.U):
1085 This variable conditionally defines the HAS_GETGRGID_R symbol,
1086 which indicates to the C program that the getgrgid_r()
1087 routine is available.
1089 d_getgrnam_r (d_getgrnam_r.U):
1090 This variable conditionally defines the HAS_GETGRNAM_R symbol,
1091 which indicates to the C program that the getgrnam_r()
1092 routine is available.
1094 d_getgrps (d_getgrps.U):
1095 This variable conditionally defines the HAS_GETGROUPS symbol, which
1096 indicates to the C program that the getgroups() routine is available
1097 to get the list of process groups.
1099 d_gethbyaddr (d_gethbyad.U):
1100 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
1101 indicates to the C program that the gethostbyaddr() routine is available
1102 to look up hosts by their IP addresses.
1104 d_gethbyname (d_gethbynm.U):
1105 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
1106 indicates to the C program that the gethostbyname() routine is available
1107 to look up host names in some data base or other.
1109 d_gethent (d_gethent.U):
1110 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
1111 available to look up host names in some data base or another.
1113 d_gethname (d_gethname.U):
1114 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
1115 indicates to the C program that the gethostname() routine may be
1116 used to derive the host name.
1118 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
1119 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
1120 which indicates to the C program that the gethostbyaddr_r()
1121 routine is available.
1123 d_gethostbyname_r (d_gethostbyname_r.U):
1124 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
1125 which indicates to the C program that the gethostbyname_r()
1126 routine is available.
1128 d_gethostent_r (d_gethostent_r.U):
1129 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
1130 which indicates to the C program that the gethostent_r()
1131 routine is available.
1133 d_gethostprotos (d_gethostprotos.U):
1134 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
1135 which indicates to the C program that <netdb.h> supplies
1136 prototypes for the various gethost*() functions.
1137 See also netdbtype.U for probing for various netdb types.
1139 d_getitimer (d_getitimer.U):
1140 This variable conditionally defines the HAS_GETITIMER symbol, which
1141 indicates to the C program that the getitimer() routine is available.
1143 d_getlogin (d_getlogin.U):
1144 This variable conditionally defines the HAS_GETLOGIN symbol, which
1145 indicates to the C program that the getlogin() routine is available
1146 to get the login name.
1148 d_getlogin_r (d_getlogin_r.U):
1149 This variable conditionally defines the HAS_GETLOGIN_R symbol,
1150 which indicates to the C program that the getlogin_r()
1151 routine is available.
1153 d_getmnt (d_getmnt.U):
1154 This variable conditionally defines the HAS_GETMNT symbol, which
1155 indicates to the C program that the getmnt() routine is available
1156 to retrieve one or more mount info blocks by filename.
1158 d_getmntent (d_getmntent.U):
1159 This variable conditionally defines the HAS_GETMNTENT symbol, which
1160 indicates to the C program that the getmntent() routine is available
1161 to iterate through mounted files to get their mount info.
1163 d_getnameinfo (d_getnameinfo.U):
1164 This variable conditionally defines the HAS_GETNAMEINFO symbol,
1165 which indicates to the C program that the getnameinfo() function
1168 d_getnbyaddr (d_getnbyad.U):
1169 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
1170 indicates to the C program that the getnetbyaddr() routine is available
1171 to look up networks by their IP addresses.
1173 d_getnbyname (d_getnbynm.U):
1174 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
1175 indicates to the C program that the getnetbyname() routine is available
1176 to look up networks by their names.
1178 d_getnent (d_getnent.U):
1179 This variable conditionally defines HAS_GETNETENT if getnetent() is
1180 available to look up network names in some data base or another.
1182 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
1183 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
1184 which indicates to the C program that the getnetbyaddr_r()
1185 routine is available.
1187 d_getnetbyname_r (d_getnetbyname_r.U):
1188 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
1189 which indicates to the C program that the getnetbyname_r()
1190 routine is available.
1192 d_getnetent_r (d_getnetent_r.U):
1193 This variable conditionally defines the HAS_GETNETENT_R symbol,
1194 which indicates to the C program that the getnetent_r()
1195 routine is available.
1197 d_getnetprotos (d_getnetprotos.U):
1198 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1199 which indicates to the C program that <netdb.h> supplies
1200 prototypes for the various getnet*() functions.
1201 See also netdbtype.U for probing for various netdb types.
1203 d_getpagsz (d_getpagsz.U):
1204 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1205 is available to get the system page size.
1207 d_getpbyname (d_getprotby.U):
1208 This variable conditionally defines the HAS_GETPROTOBYNAME
1209 symbol, which indicates to the C program that the
1210 getprotobyname() routine is available to look up protocols
1213 d_getpbynumber (d_getprotby.U):
1214 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1215 symbol, which indicates to the C program that the
1216 getprotobynumber() routine is available to look up protocols
1219 d_getpent (d_getpent.U):
1220 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1221 available to look up protocols in some data base or another.
1223 d_getpgid (d_getpgid.U):
1224 This variable conditionally defines the HAS_GETPGID symbol, which
1225 indicates to the C program that the getpgid(pid) function
1226 is available to get the process group id.
1228 d_getpgrp (d_getpgrp.U):
1229 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1230 available to get the current process group.
1232 d_getpgrp2 (d_getpgrp2.U):
1233 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1234 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1235 is available to get the current process group.
1237 d_getppid (d_getppid.U):
1238 This variable conditionally defines the HAS_GETPPID symbol, which
1239 indicates to the C program that the getppid() routine is available
1240 to get the parent process ID.
1242 d_getprior (d_getprior.U):
1243 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1244 is available to get a process's priority.
1246 d_getprotobyname_r (d_getprotobyname_r.U):
1247 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1248 which indicates to the C program that the getprotobyname_r()
1249 routine is available.
1251 d_getprotobynumber_r (d_getprotobynumber_r.U):
1252 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1253 which indicates to the C program that the getprotobynumber_r()
1254 routine is available.
1256 d_getprotoent_r (d_getprotoent_r.U):
1257 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1258 which indicates to the C program that the getprotoent_r()
1259 routine is available.
1261 d_getprotoprotos (d_getprotoprotos.U):
1262 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1263 which indicates to the C program that <netdb.h> supplies
1264 prototypes for the various getproto*() functions.
1265 See also netdbtype.U for probing for various netdb types.
1267 d_getprpwnam (d_getprpwnam.U):
1268 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1269 available to retrieve protected (shadow) password entries by name.
1271 d_getpwent (d_getpwent.U):
1272 This variable conditionally defines the HAS_GETPWENT symbol, which
1273 indicates to the C program that the getpwent() routine is available
1274 for sequential access of the passwd database.
1276 d_getpwent_r (d_getpwent_r.U):
1277 This variable conditionally defines the HAS_GETPWENT_R symbol,
1278 which indicates to the C program that the getpwent_r()
1279 routine is available.
1281 d_getpwnam_r (d_getpwnam_r.U):
1282 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1283 which indicates to the C program that the getpwnam_r()
1284 routine is available.
1286 d_getpwuid_r (d_getpwuid_r.U):
1287 This variable conditionally defines the HAS_GETPWUID_R symbol,
1288 which indicates to the C program that the getpwuid_r()
1289 routine is available.
1291 d_getsbyname (d_getsrvby.U):
1292 This variable conditionally defines the HAS_GETSERVBYNAME
1293 symbol, which indicates to the C program that the
1294 getservbyname() routine is available to look up services
1297 d_getsbyport (d_getsrvby.U):
1298 This variable conditionally defines the HAS_GETSERVBYPORT
1299 symbol, which indicates to the C program that the
1300 getservbyport() routine is available to look up services
1303 d_getsent (d_getsent.U):
1304 This variable conditionally defines HAS_GETSERVENT if getservent() is
1305 available to look up network services in some data base or another.
1307 d_getservbyname_r (d_getservbyname_r.U):
1308 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1309 which indicates to the C program that the getservbyname_r()
1310 routine is available.
1312 d_getservbyport_r (d_getservbyport_r.U):
1313 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1314 which indicates to the C program that the getservbyport_r()
1315 routine is available.
1317 d_getservent_r (d_getservent_r.U):
1318 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1319 which indicates to the C program that the getservent_r()
1320 routine is available.
1322 d_getservprotos (d_getservprotos.U):
1323 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1324 which indicates to the C program that <netdb.h> supplies
1325 prototypes for the various getserv*() functions.
1326 See also netdbtype.U for probing for various netdb types.
1328 d_getspnam (d_getspnam.U):
1329 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1330 available to retrieve SysV shadow password entries by name.
1332 d_getspnam_r (d_getspnam_r.U):
1333 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1334 which indicates to the C program that the getspnam_r()
1335 routine is available.
1337 d_gettimeod (d_ftime.U):
1338 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1339 indicates that the gettimeofday() system call exists (to obtain a
1340 sub-second accuracy clock). You should probably include <sys/resource.h>.
1342 d_gmtime64 (d_timefuncs64.U):
1343 This variable conditionally defines the HAS_GMTIME64 symbol, which
1344 indicates to the C program that the gmtime64 () routine is available.
1346 d_gmtime_r (d_gmtime_r.U):
1347 This variable conditionally defines the HAS_GMTIME_R symbol,
1348 which indicates to the C program that the gmtime_r()
1349 routine is available.
1351 d_gnulibc (d_gnulibc.U):
1352 Defined if we're dealing with the GNU C Library.
1354 d_grpasswd (i_grp.U):
1355 This variable conditionally defines GRPASSWD, which indicates
1356 that struct group in <grp.h> contains gr_passwd.
1358 d_hasmntopt (d_hasmntopt.U):
1359 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1360 indicates to the C program that the hasmntopt() routine is available
1361 to query the mount options of file systems.
1363 d_htonl (d_htonl.U):
1364 This variable conditionally defines HAS_HTONL if htonl() and its
1365 friends are available to do network order byte swapping.
1367 d_hypot (d_hypot.U):
1368 This variable conditionally defines HAS_HYPOT if hypot is available
1369 for numerically stable hypotenuse function.
1371 d_ilogb (d_ilogb.U):
1372 This variable conditionally defines the HAS_ILOGB symbol, which
1373 indicates to the C program that the ilogb() routine is available
1374 for extracting the exponent of double x as a signed integer.
1376 d_ilogbl (d_ilogbl.U):
1377 This variable conditionally defines the HAS_ILOGBL symbol, which
1378 indicates to the C program that the ilogbl() routine is available
1379 for extracting the exponent of long double x as a signed integer.
1380 If scalbnl is also present we can emulate frexpl.
1382 d_inc_version_list (inc_version_list.U):
1383 This variable conditionally defines PERL_INC_VERSION_LIST.
1384 It is set to undef when PERL_INC_VERSION_LIST is empty.
1386 d_inetaton (d_inetaton.U):
1387 This variable conditionally defines the HAS_INET_ATON symbol, which
1388 indicates to the C program that the inet_aton() function is available
1389 to parse IP address "dotted-quad" strings.
1391 d_inetntop (d_inetntop.U):
1392 This variable conditionally defines the HAS_INETNTOP symbol,
1393 which indicates to the C program that the inet_ntop() function
1396 d_inetpton (d_inetpton.U):
1397 This variable conditionally defines the HAS_INETPTON symbol,
1398 which indicates to the C program that the inet_pton() function
1401 d_int64_t (d_int64_t.U):
1402 This symbol will be defined if the C compiler supports int64_t.
1404 d_ip_mreq (d_socket.U):
1405 This variable conditionally defines the HAS_IP_MREQ symbol, which
1406 indicates the availability of a struct ip_mreq.
1408 d_ip_mreq_source (d_socket.U):
1409 This variable conditionally defines the HAS_IP_MREQ_SOURCE symbol,
1410 which indicates the availability of a struct ip_mreq_source.
1412 d_ipv6_mreq (d_socket.U):
1413 This variable conditionally defines the HAS_IPV6_MREQ symbol, which
1414 indicates the availability of a struct ipv6_mreq.
1416 d_ipv6_mreq_source (d_socket.U):
1417 This variable conditionally defines the HAS_IPV6_MREQ_SOURCE symbol,
1418 which indicates the availability of a struct ipv6_mreq_source.
1420 d_isascii (d_isascii.U):
1421 This variable conditionally defines the HAS_ISASCII constant,
1422 which indicates to the C program that isascii() is available.
1424 d_isblank (d_isblank.U):
1425 This variable conditionally defines the HAS_ISBLANK constant,
1426 which indicates to the C program that isblank() is available.
1428 d_isfinite (d_isfinite.U):
1429 This variable conditionally defines the HAS_ISFINITE symbol, which
1430 indicates to the C program that the isfinite() routine is available.
1432 d_isfinitel (d_isfinitel.U):
1433 This variable conditionally defines the HAS_ISFINITEL symbol, which
1434 indicates to the C program that the isfinitel() routine is available.
1436 d_isinf (d_isinf.U):
1437 This variable conditionally defines the HAS_ISINF symbol, which
1438 indicates to the C program that the isinf() routine is available.
1440 d_isinfl (d_isinfl.U):
1441 This variable conditionally defines the HAS_ISINFL symbol, which
1442 indicates to the C program that the isinfl() routine is available.
1444 d_isless (d_isless.U):
1445 This variable conditionally defines the HAS_ISLESS symbol, which
1446 indicates to the C program that the isless() routine is available.
1448 d_isnan (d_isnan.U):
1449 This variable conditionally defines the HAS_ISNAN symbol, which
1450 indicates to the C program that the isnan() routine is available.
1452 d_isnanl (d_isnanl.U):
1453 This variable conditionally defines the HAS_ISNANL symbol, which
1454 indicates to the C program that the isnanl() routine is available.
1456 d_isnormal (d_isnormal.U):
1457 This variable conditionally defines the HAS_ISNORMAL symbol, which
1458 indicates to the C program that the isnormal() routine is available.
1461 This variable conditionally defines the HAS_J0 symbol, which
1462 indicates to the C program that the j0() routine is available.
1465 This variable conditionally defines the HAS_J0L symbol, which
1466 indicates to the C program that the j0l() routine is available.
1468 d_killpg (d_killpg.U):
1469 This variable conditionally defines the HAS_KILLPG symbol, which
1470 indicates to the C program that the killpg() routine is available
1471 to kill process groups.
1473 d_lc_monetary_2008 (d_lc_monetary_2008.U):
1474 This variable conditionally defines HAS_LC_MONETARY_2008 if libc
1475 has the international currency locale rules from POSIX
1478 d_lchown (d_lchown.U):
1479 This variable conditionally defines the HAS_LCHOWN symbol, which
1480 indicates to the C program that the lchown() routine is available
1481 to operate on a symbolic link (instead of following the link).
1483 d_ldbl_dig (d_ldbl_dig.U):
1484 This variable conditionally defines d_ldbl_dig if this system's
1485 header files provide LDBL_DIG, which is the number of significant
1486 digits in a long double precision number.
1488 d_ldexpl (d_longdbl.U):
1489 This variable conditionally defines the HAS_LDEXPL symbol, which
1490 indicates to the C program that the ldexpl() routine is available.
1492 d_lgamma (d_lgamma.U):
1493 This variable conditionally defines the HAS_LGAMMA symbol, which
1494 indicates to the C program that the lgamma() routine is available
1495 for the log gamma function. See also d_tgamma and d_lgamma_r.
1497 d_lgamma_r (d_lgamma_r.U):
1498 This variable conditionally defines the HAS_LGAMMA_R symbol, which
1499 indicates to the C program that the lgamma_r() routine is available
1500 for the log gamma function, without using the global signgam variable.
1502 d_libm_lib_version (d_libm_lib_version.U):
1503 This variable conditionally defines the LIBM_LIB_VERSION symbol,
1504 which indicates to the C program that math.h defines _LIB_VERSION
1505 being available in libm
1507 d_libname_unique (so.U):
1508 This variable is defined if the target system insists on unique
1509 basenames for shared library files. This is currently true on Android,
1510 false everywhere else we know of.
1511 Defaults to 'undef'.
1514 This variable conditionally defines HAS_LINK if link() is
1515 available to create hard links.
1517 d_linkat (d_fsat.U):
1518 This variable conditionally defines the HAS_LINKAT symbol, which
1519 indicates the POSIX linkat() function is available.
1521 d_llrint (d_llrint.U):
1522 This variable conditionally defines the HAS_LLRINT symbol, which
1523 indicates to the C program that the llrint() routine is available
1524 to return the long long value closest to a double (according
1525 to the current rounding mode).
1527 d_llrintl (d_llrintl.U):
1528 This variable conditionally defines the HAS_LLRINTL symbol, which
1529 indicates to the C program that the llrintl() routine is available
1530 to return the long long value closest to a long double (according
1531 to the current rounding mode).
1533 d_llround (d_llround.U):
1534 This variable conditionally defines the HAS_LLROUND symbol, which
1535 indicates to the C program that the llround() routine is available
1536 to return the long long value nearest to x.
1538 d_llroundl (d_llroundl.U):
1539 This variable conditionally defines the HAS_LLROUNDL symbol, which
1540 indicates to the C program that the llroundl() routine is available
1541 to return the long long value nearest to x away from zero.
1543 d_localeconv_l (d_localeconv_l.U):
1544 This variable conditionally defines the HAS_LOCALECONV_L symbol, which
1545 indicates to the C program that the localeconv_l() routine is available.
1547 d_localtime64 (d_timefuncs64.U):
1548 This variable conditionally defines the HAS_LOCALTIME64 symbol, which
1549 indicates to the C program that the localtime64 () routine is available.
1551 d_localtime_r (d_localtime_r.U):
1552 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1553 which indicates to the C program that the localtime_r()
1554 routine is available.
1556 d_localtime_r_needs_tzset (d_localtime_r.U):
1557 This variable conditionally defines the LOCALTIME_R_NEEDS_TZSET
1558 symbol, which makes us call tzset before localtime_r()
1560 d_locconv (d_locconv.U):
1561 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1562 available for numeric and monetary formatting conventions.
1564 d_lockf (d_lockf.U):
1565 This variable conditionally defines HAS_LOCKF if lockf() is
1566 available to do file locking.
1568 d_log1p (d_log1p.U):
1569 This variable conditionally defines the HAS_LOG1P symbol, which
1570 indicates to the C program that the logp1() routine is available
1571 to compute log(1 + x) for values of x close to zero.
1574 This variable conditionally defines the HAS_LOG2 symbol, which
1575 indicates to the C program that the log2() routine is available
1576 to compute log base two.
1579 This variable conditionally defines the HAS_LOGB symbol, which
1580 indicates to the C program that the logb() routine is available
1581 to extract the exponent of x.
1583 d_long_double_style_ieee (d_longdbl.U):
1584 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE
1585 if the long double is any of the IEEE 754 style long doubles:
1586 LONG_DOUBLE_STYLE_IEEE_STD, LONG_DOUBLE_STYLE_IEEE_EXTENDED,
1587 LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE.
1589 d_long_double_style_ieee_doubledouble (d_longdbl.U):
1590 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE
1591 if the long double is the 128-bit IEEE 754 double-double.
1593 d_long_double_style_ieee_extended (d_longdbl.U):
1594 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_EXTENDED
1595 if the long double is the 80-bit IEEE 754 extended precision.
1596 Note that despite the 'extended' this is less than the 'std',
1597 since thisis an extension of the double precision.
1599 d_long_double_style_ieee_std (d_longdbl.U):
1600 This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_STD
1601 if the long double is the 128-bit IEEE 754.
1603 d_long_double_style_vax (d_longdbl.U):
1604 This variable conditionally defines LONG_DOUBLE_STYLE_VAX
1605 if the long double is the 128-bit VAX format H.
1607 d_longdbl (d_longdbl.U):
1608 This variable conditionally defines HAS_LONG_DOUBLE if
1609 the long double type is supported.
1611 d_longlong (d_longlong.U):
1612 This variable conditionally defines HAS_LONG_LONG if
1613 the long long type is supported.
1615 d_lrint (d_lrint.U):
1616 This variable conditionally defines the HAS_LRINT symbol, which
1617 indicates to the C program that the lrint() routine is available
1618 to return the integral value closest to a double (according
1619 to the current rounding mode).
1621 d_lrintl (d_lrintl.U):
1622 This variable conditionally defines the HAS_LRINTL symbol, which
1623 indicates to the C program that the lrintl() routine is available
1624 to return the integral value closest to a long double (according
1625 to the current rounding mode).
1627 d_lround (d_lround.U):
1628 This variable conditionally defines the HAS_LROUND symbol, which
1629 indicates to the C program that the lround() routine is available
1630 to return the integral value nearest to x.
1632 d_lroundl (d_lroundl.U):
1633 This variable conditionally defines the HAS_LROUNDL symbol, which
1634 indicates to the C program that the lroundl() routine is available
1635 to return the integral value nearest to x away from zero.
1637 d_lseekproto (d_lseekproto.U):
1638 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1639 which indicates to the C program that the system provides
1640 a prototype for the lseek() function. Otherwise, it is
1641 up to the program to supply one.
1643 d_lstat (d_lstat.U):
1644 This variable conditionally defines HAS_LSTAT if lstat() is
1645 available to do file stats on symbolic links.
1647 d_madvise (d_madvise.U):
1648 This variable conditionally defines HAS_MADVISE if madvise() is
1649 available to map a file into memory.
1651 d_malloc_good_size (d_malloc_size.U):
1652 This symbol, if defined, indicates that the malloc_good_size
1653 routine is available for use.
1655 d_malloc_size (d_malloc_size.U):
1656 This symbol, if defined, indicates that the malloc_size
1657 routine is available for use.
1659 d_mblen (d_mblen.U):
1660 This variable conditionally defines the HAS_MBLEN symbol, which
1661 indicates to the C program that the mblen() routine is available
1662 to find the number of bytes in a multibye character.
1664 d_mbrlen (d_mbrlen.U):
1665 This variable conditionally defines the HAS_MBRLEN symbol if the
1666 mbrlen() routine is available to be used to get the length of
1667 multi-byte character strings.
1669 d_mbrtowc (d_mbrtowc.U):
1670 This variable conditionally defines the HAS_MBRTOWC symbol if the
1671 mbrtowc() routine is available to be used to convert a multi-byte
1672 character into a wide character.
1674 d_mbstowcs (d_mbstowcs.U):
1675 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1676 indicates to the C program that the mbstowcs() routine is available
1677 to convert a multibyte string into a wide character string.
1679 d_mbtowc (d_mbtowc.U):
1680 This variable conditionally defines the HAS_MBTOWC symbol, which
1681 indicates to the C program that the mbtowc() routine is available
1682 to convert multibyte to a wide character.
1684 d_memmem (d_memmem.U):
1685 This variable conditionally defines the HAS_MEMMEM symbol, which
1686 indicates to the C program that the memmem() routine is available
1687 to return a pointer to the start of the first occurance of a
1688 substring in a memory area (or NULL if not found).
1690 d_memrchr (d_memrchr.U):
1691 This variable conditionally defines the HAS_MEMRCHR symbol, which
1692 indicates to the C program that the memrchr() routine is available
1693 to return a pointer to the last occurrence of a byte in a memory
1694 area (or NULL if not found).
1696 d_mkdir (d_mkdir.U):
1697 This variable conditionally defines the HAS_MKDIR symbol, which
1698 indicates to the C program that the mkdir() routine is available
1699 to create directories..
1701 d_mkdtemp (d_mkdtemp.U):
1702 This variable conditionally defines the HAS_MKDTEMP symbol, which
1703 indicates to the C program that the mkdtemp() routine is available
1704 to exclusively create a uniquely named temporary directory.
1706 d_mkfifo (d_mkfifo.U):
1707 This variable conditionally defines the HAS_MKFIFO symbol, which
1708 indicates to the C program that the mkfifo() routine is available.
1710 d_mkstemp (d_mkstemp.U):
1711 This variable conditionally defines the HAS_MKSTEMP symbol, which
1712 indicates to the C program that the mkstemp() routine is available
1713 to exclusively create and open a uniquely named temporary file.
1715 d_mkstemps (d_mkstemps.U):
1716 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1717 indicates to the C program that the mkstemps() routine is available
1718 to exclusively create and open a uniquely named (with a suffix)
1721 d_mktime (d_mktime.U):
1722 This variable conditionally defines the HAS_MKTIME symbol, which
1723 indicates to the C program that the mktime() routine is available.
1725 d_mktime64 (d_timefuncs64.U):
1726 This variable conditionally defines the HAS_MKTIME64 symbol, which
1727 indicates to the C program that the mktime64 () routine is available.
1730 This variable conditionally defines HAS_MMAP if mmap() is
1731 available to map a file into memory.
1733 d_modfl (d_modfl.U):
1734 This variable conditionally defines the HAS_MODFL symbol, which
1735 indicates to the C program that the modfl() routine is available.
1737 d_modflproto (d_modfl.U):
1738 This symbol, if defined, indicates that the system provides
1739 a prototype for the modfl() function. Otherwise, it is up
1740 to the program to supply one. C99 says it should be
1741 long double modfl(long double, long double *);
1743 d_mprotect (d_mprotect.U):
1744 This variable conditionally defines HAS_MPROTECT if mprotect() is
1745 available to modify the access protection of a memory mapped file.
1748 This variable conditionally defines the HAS_MSG symbol, which
1749 indicates that the entire msg*(2) library is present.
1751 d_msg_ctrunc (d_socket.U):
1752 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1753 which indicates that the MSG_CTRUNC is available. #ifdef is
1754 not enough because it may be an enum, glibc has been known to do this.
1756 d_msg_dontroute (d_socket.U):
1757 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1758 which indicates that the MSG_DONTROUTE is available. #ifdef is
1759 not enough because it may be an enum, glibc has been known to do this.
1761 d_msg_oob (d_socket.U):
1762 This variable conditionally defines the HAS_MSG_OOB symbol,
1763 which indicates that the MSG_OOB is available. #ifdef is
1764 not enough because it may be an enum, glibc has been known to do this.
1766 d_msg_peek (d_socket.U):
1767 This variable conditionally defines the HAS_MSG_PEEK symbol,
1768 which indicates that the MSG_PEEK is available. #ifdef is
1769 not enough because it may be an enum, glibc has been known to do this.
1771 d_msg_proxy (d_socket.U):
1772 This variable conditionally defines the HAS_MSG_PROXY symbol,
1773 which indicates that the MSG_PROXY is available. #ifdef is
1774 not enough because it may be an enum, glibc has been known to do this.
1776 d_msgctl (d_msgctl.U):
1777 This variable conditionally defines the HAS_MSGCTL symbol, which
1778 indicates to the C program that the msgctl() routine is available.
1780 d_msgget (d_msgget.U):
1781 This variable conditionally defines the HAS_MSGGET symbol, which
1782 indicates to the C program that the msgget() routine is available.
1784 d_msghdr_s (d_msghdr_s.U):
1785 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1786 which indicates that the struct msghdr is supported.
1788 d_msgrcv (d_msgrcv.U):
1789 This variable conditionally defines the HAS_MSGRCV symbol, which
1790 indicates to the C program that the msgrcv() routine is available.
1792 d_msgsnd (d_msgsnd.U):
1793 This variable conditionally defines the HAS_MSGSND symbol, which
1794 indicates to the C program that the msgsnd() routine is available.
1796 d_msync (d_msync.U):
1797 This variable conditionally defines HAS_MSYNC if msync() is
1798 available to synchronize a mapped file.
1800 d_munmap (d_munmap.U):
1801 This variable conditionally defines HAS_MUNMAP if munmap() is
1802 available to unmap a region mapped by mmap().
1804 d_mymalloc (mallocsrc.U):
1805 This variable conditionally defines MYMALLOC in case other parts
1806 of the source want to take special action if MYMALLOC is used.
1807 This may include different sorts of profiling or error detection.
1810 This variable conditionally defines HAS_NAN if nan() is
1811 available to generate NaN.
1813 d_nanosleep (d_nanosleep.U):
1814 This variable conditionally defines HAS_NANOSLEEP
1815 if nanosleep() is available to sleep with 1E-9 sec accuracy.
1818 This variable conditionally defines the HAS_NDBM symbol, which
1819 indicates that both the ndbm.h include file and an appropriate ndbm
1820 library exist. Consult the different i_*ndbm variables
1821 to find out the actual include location. Sometimes, a system has the
1822 header file but not the library. This variable will only be set if
1823 the system has both.
1825 d_ndbm_h_uses_prototypes (i_ndbm.U):
1826 This variable conditionally defines the NDBM_H_USES_PROTOTYPES symbol,
1827 which indicates that the ndbm.h include file uses real ANSI C
1828 prototypes instead of K&R style function declarations. K&R style
1829 declarations are unsupported in C++, so the include file requires
1830 special handling when using a C++ compiler and this variable is
1831 undefined. Consult the different d_*ndbm_h_uses_prototypes variables
1832 to get the same information for alternative ndbm.h include files.
1834 d_nearbyint (d_nearbyint.U):
1835 This variable conditionally defines HAS_NEARBYINT if nearbyint()
1836 is available to return the integral value closest to (according to
1837 the current rounding mode) to x.
1839 d_newlocale (d_newlocale.U):
1840 This variable conditionally defines the HAS_NEWLOCALE symbol, which
1841 indicates to the C program that the newlocale() routine is available
1842 to return a new locale object or modify an existing locale object.
1844 d_nextafter (d_nextafter.U):
1845 This variable conditionally defines HAS_NEXTAFTER if nextafter()
1846 is available to return the next machine representable double from
1849 d_nexttoward (d_nexttoward.U):
1850 This variable conditionally defines HAS_NEXTTOWARD if nexttoward()
1851 is available to return the next machine representable long double from
1855 This variable conditionally defines the HAS_NICE symbol, which
1856 indicates to the C program that the nice() routine is available.
1858 d_nl_langinfo (d_nl_langinfo.U):
1859 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1860 indicates to the C program that the nl_langinfo() routine is available.
1862 d_nv_preserves_uv (perlxv.U):
1863 This variable indicates whether a variable of type nvtype
1864 can preserve all the bits a variable of type uvtype.
1866 d_nv_zero_is_allbits_zero (perlxv.U):
1867 This variable indicates whether a variable of type nvtype
1868 stores 0.0 in memory as all bits zero.
1870 d_off64_t (d_off64_t.U):
1871 This symbol will be defined if the C compiler supports off64_t.
1873 d_old_pthread_create_joinable (d_pthrattrj.U):
1874 This variable conditionally defines pthread_create_joinable.
1875 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1877 d_oldpthreads (usethreads.U):
1878 This variable conditionally defines the OLD_PTHREADS_API symbol,
1879 and indicates that Perl should be built to use the old
1880 draft POSIX threads API. This is only potentially meaningful if
1883 d_oldsock (d_socket.U):
1884 This variable conditionally defines the OLDSOCKET symbol, which
1885 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1887 d_open3 (d_open3.U):
1888 This variable conditionally defines the HAS_OPEN3 manifest constant,
1889 which indicates to the C program that the 3 argument version of
1890 the open(2) function is available.
1892 d_openat (d_fsat.U):
1893 This variable conditionally defines the HAS_OPENAT symbol, which
1894 indicates the POSIX openat() function is available.
1896 d_pathconf (d_pathconf.U):
1897 This variable conditionally defines the HAS_PATHCONF symbol, which
1898 indicates to the C program that the pathconf() routine is available
1899 to determine file-system related limits and options associated
1900 with a given filename.
1902 d_pause (d_pause.U):
1903 This variable conditionally defines the HAS_PAUSE symbol, which
1904 indicates to the C program that the pause() routine is available
1905 to suspend a process until a signal is received.
1907 d_perl_otherlibdirs (otherlibdirs.U):
1908 This variable conditionally defines PERL_OTHERLIBDIRS, which
1909 contains a colon-separated set of paths for the perl binary to
1910 include in @INC. See also otherlibdirs.
1912 d_phostname (d_gethname.U):
1913 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1914 contains the shell command which, when fed to popen(), may be
1915 used to derive the host name.
1918 This variable conditionally defines the HAS_PIPE symbol, which
1919 indicates to the C program that the pipe() routine is available
1920 to create an inter-process channel.
1923 This variable conditionally defines the HAS_POLL symbol, which
1924 indicates to the C program that the poll() routine is available
1925 to poll active file descriptors.
1927 d_portable (d_portable.U):
1928 This variable conditionally defines the PORTABLE symbol, which
1929 indicates to the C program that it should not assume that it is
1930 running on the machine it was compiled on.
1932 d_prctl (d_prctl.U):
1933 This variable conditionally defines the HAS_PRCTL symbol, which
1934 indicates to the C program that the prctl() routine is available.
1935 Note that there are at least two prctl variants: Linux and Irix.
1936 While they are somewhat similar, they are incompatible.
1938 d_prctl_set_name (d_prctl.U):
1939 This variable conditionally defines the HAS_PRCTL_SET_NAME symbol,
1940 which indicates to the C program that the prctl() routine supports
1941 the PR_SET_NAME option.
1943 d_PRId64 (quadfio.U):
1944 This variable conditionally defines the PERL_PRId64 symbol, which
1945 indicates that stdio has a symbol to print 64-bit decimal numbers.
1947 d_PRIeldbl (longdblfio.U):
1948 This variable conditionally defines the PERL_PRIfldbl symbol, which
1949 indicates that stdio has a symbol to print long doubles.
1951 d_PRIEUldbl (longdblfio.U):
1952 This variable conditionally defines the PERL_PRIfldbl symbol, which
1953 indicates that stdio has a symbol to print long doubles.
1954 The 'U' in the name is to separate this from d_PRIeldbl so that even
1955 case-blind systems can see the difference.
1957 d_PRIfldbl (longdblfio.U):
1958 This variable conditionally defines the PERL_PRIfldbl symbol, which
1959 indicates that stdio has a symbol to print long doubles.
1961 d_PRIFUldbl (longdblfio.U):
1962 This variable conditionally defines the PERL_PRIfldbl symbol, which
1963 indicates that stdio has a symbol to print long doubles.
1964 The 'U' in the name is to separate this from d_PRIfldbl so that even
1965 case-blind systems can see the difference.
1967 d_PRIgldbl (longdblfio.U):
1968 This variable conditionally defines the PERL_PRIfldbl symbol, which
1969 indicates that stdio has a symbol to print long doubles.
1971 d_PRIGUldbl (longdblfio.U):
1972 This variable conditionally defines the PERL_PRIfldbl symbol, which
1973 indicates that stdio has a symbol to print long doubles.
1974 The 'U' in the name is to separate this from d_PRIgldbl so that even
1975 case-blind systems can see the difference.
1977 d_PRIi64 (quadfio.U):
1978 This variable conditionally defines the PERL_PRIi64 symbol, which
1979 indicates that stdio has a symbol to print 64-bit decimal numbers.
1981 d_printf_format_null (d_attribut.U):
1982 This variable conditionally defines PRINTF_FORMAT_NULL_OK, which
1983 indicates the C compiler allows printf-like formats to be null.
1985 d_PRIo64 (quadfio.U):
1986 This variable conditionally defines the PERL_PRIo64 symbol, which
1987 indicates that stdio has a symbol to print 64-bit octal numbers.
1989 d_PRIu64 (quadfio.U):
1990 This variable conditionally defines the PERL_PRIu64 symbol, which
1991 indicates that stdio has a symbol to print 64-bit unsigned decimal
1994 d_PRIx64 (quadfio.U):
1995 This variable conditionally defines the PERL_PRIx64 symbol, which
1996 indicates that stdio has a symbol to print 64-bit hexadecimal numbers.
1998 d_PRIXU64 (quadfio.U):
1999 This variable conditionally defines the PERL_PRIXU64 symbol, which
2000 indicates that stdio has a symbol to print 64-bit hExADECimAl numbers.
2001 The 'U' in the name is to separate this from d_PRIx64 so that even
2002 case-blind systems can see the difference.
2004 d_procselfexe (d_procselfexe.U):
2005 Defined if $procselfexe is symlink to the absolute
2006 pathname of the executing program.
2008 d_pseudofork (d_vfork.U):
2009 This variable conditionally defines the HAS_PSEUDOFORK symbol,
2010 which indicates that an emulation of the fork routine is available.
2012 d_pthread_atfork (d_pthread_atfork.U):
2013 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
2014 which indicates to the C program that the pthread_atfork()
2015 routine is available.
2017 d_pthread_attr_setscope (d_pthread_attr_ss.U):
2018 This variable conditionally defines HAS_PTHREAD_ATTR_SETSCOPE if
2019 pthread_attr_setscope() is available to set the contention scope
2020 attribute of a thread attribute object.
2022 d_pthread_yield (d_pthread_y.U):
2023 This variable conditionally defines the HAS_PTHREAD_YIELD
2024 symbol if the pthread_yield routine is available to yield
2025 the execution of the current thread.
2027 d_ptrdiff_t (d_ptrdiff_t.U):
2028 This symbol will be defined if the C compiler supports ptrdiff_t.
2031 This variable conditionally defines PWAGE, which indicates
2032 that struct passwd contains pw_age.
2034 d_pwchange (i_pwd.U):
2035 This variable conditionally defines PWCHANGE, which indicates
2036 that struct passwd contains pw_change.
2038 d_pwclass (i_pwd.U):
2039 This variable conditionally defines PWCLASS, which indicates
2040 that struct passwd contains pw_class.
2042 d_pwcomment (i_pwd.U):
2043 This variable conditionally defines PWCOMMENT, which indicates
2044 that struct passwd contains pw_comment.
2046 d_pwexpire (i_pwd.U):
2047 This variable conditionally defines PWEXPIRE, which indicates
2048 that struct passwd contains pw_expire.
2050 d_pwgecos (i_pwd.U):
2051 This variable conditionally defines PWGECOS, which indicates
2052 that struct passwd contains pw_gecos.
2054 d_pwpasswd (i_pwd.U):
2055 This variable conditionally defines PWPASSWD, which indicates
2056 that struct passwd contains pw_passwd.
2058 d_pwquota (i_pwd.U):
2059 This variable conditionally defines PWQUOTA, which indicates
2060 that struct passwd contains pw_quota.
2062 d_qgcvt (d_qgcvt.U):
2063 This variable conditionally defines the HAS_QGCVT symbol, which
2064 indicates to the C program that the qgcvt() routine is available.
2066 d_quad (quadtype.U):
2067 This variable, if defined, tells that there's a 64-bit integer type,
2070 d_querylocale (d_newlocale.U):
2071 This variable conditionally defines the HAS_QUERYLOCALE symbol, which
2072 indicates to the C program that the querylocale() routine is available
2073 to return the name of the locale for a category mask.
2075 d_random_r (d_random_r.U):
2076 This variable conditionally defines the HAS_RANDOM_R symbol,
2077 which indicates to the C program that the random_r()
2078 routine is available.
2080 d_re_comp (d_regcmp.U):
2081 This variable conditionally defines the HAS_RECOMP symbol, which
2082 indicates to the C program that the re_comp() routine is available
2083 for regular patern matching (usally on BSD). If so, it is likely that
2086 d_readdir (d_readdir.U):
2087 This variable conditionally defines HAS_READDIR if readdir() is
2088 available to read directory entries.
2090 d_readdir64_r (d_readdir64_r.U):
2091 This variable conditionally defines the HAS_READDIR64_R symbol,
2092 which indicates to the C program that the readdir64_r()
2093 routine is available.
2095 d_readdir_r (d_readdir_r.U):
2096 This variable conditionally defines the HAS_READDIR_R symbol,
2097 which indicates to the C program that the readdir_r()
2098 routine is available.
2100 d_readlink (d_readlink.U):
2101 This variable conditionally defines the HAS_READLINK symbol, which
2102 indicates to the C program that the readlink() routine is available
2103 to read the value of a symbolic link.
2105 d_readv (d_readv.U):
2106 This variable conditionally defines the HAS_READV symbol, which
2107 indicates to the C program that the readv() routine is available.
2109 d_recvmsg (d_recvmsg.U):
2110 This variable conditionally defines the HAS_RECVMSG symbol, which
2111 indicates to the C program that the recvmsg() routine is available.
2113 d_regcmp (d_regcmp.U):
2114 This variable conditionally defines the HAS_REGCMP symbol, which
2115 indicates to the C program that the regcmp() routine is available
2116 for regular patern matching (usally on System V).
2118 d_regcomp (d_regcmp.U):
2119 This variable conditionally defines the HAS_REGCOMP symbol, which
2120 indicates to the C program that the regcomp() routine is available
2121 for regular patern matching (usally on POSIX.2 conforming systems).
2123 d_remainder (d_remainder.U):
2124 This variable conditionally defines the HAS_REMAINDER symbol, which
2125 indicates to the C program that the remainder() routine is available.
2127 d_remquo (d_remquo.U):
2128 This variable conditionally defines the HAS_REMQUO symbol, which
2129 indicates to the C program that the remquo() routine is available.
2131 d_rename (d_rename.U):
2132 This variable conditionally defines the HAS_RENAME symbol, which
2133 indicates to the C program that the rename() routine is available
2136 d_renameat (d_fsat.U):
2137 This variable conditionally defines the HAS_RENAMEAT symbol, which
2138 indicates the POSIX renameat() function is available.
2140 d_rewinddir (d_readdir.U):
2141 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
2145 This variable conditionally defines the HAS_RINT symbol, which
2146 indicates to the C program that the rint() routine is available.
2148 d_rmdir (d_rmdir.U):
2149 This variable conditionally defines HAS_RMDIR if rmdir() is
2150 available to remove directories.
2152 d_round (d_round.U):
2153 This variable conditionally defines the HAS_ROUND symbol, which
2154 indicates to the C program that the round() routine is available.
2156 d_sbrkproto (d_sbrkproto.U):
2157 This variable conditionally defines the HAS_SBRK_PROTO symbol,
2158 which indicates to the C program that the system provides
2159 a prototype for the sbrk() function. Otherwise, it is
2160 up to the program to supply one.
2162 d_scalbn (d_scalbn.U):
2163 This variable conditionally defines the HAS_SCALBN symbol, which
2164 indicates to the C program that the scalbn() routine is available.
2166 d_scalbnl (d_scalbnl.U):
2167 This variable conditionally defines the HAS_SCALBNL symbol, which
2168 indicates to the C program that the scalbnl() routine is available.
2169 If ilogbl is also present we can emulate frexpl.
2171 d_sched_yield (d_pthread_y.U):
2172 This variable conditionally defines the HAS_SCHED_YIELD
2173 symbol if the sched_yield routine is available to yield
2174 the execution of the current thread.
2176 d_scm_rights (d_socket.U):
2177 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
2178 which indicates that the SCM_RIGHTS is available. #ifdef is
2179 not enough because it may be an enum, glibc has been known to do this.
2181 d_SCNfldbl (longdblfio.U):
2182 This variable conditionally defines the PERL_PRIfldbl symbol, which
2183 indicates that stdio has a symbol to scan long doubles.
2185 d_seekdir (d_readdir.U):
2186 This variable conditionally defines HAS_SEEKDIR if seekdir() is
2189 d_select (d_select.U):
2190 This variable conditionally defines HAS_SELECT if select() is
2191 available to select active file descriptors. A <sys/time.h>
2192 inclusion may be necessary for the timeout field.
2195 This variable conditionally defines the HAS_SEM symbol, which
2196 indicates that the entire sem*(2) library is present.
2198 d_semctl (d_semctl.U):
2199 This variable conditionally defines the HAS_SEMCTL symbol, which
2200 indicates to the C program that the semctl() routine is available.
2202 d_semctl_semid_ds (d_union_semun.U):
2203 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
2204 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
2206 d_semctl_semun (d_union_semun.U):
2207 This variable conditionally defines USE_SEMCTL_SEMUN, which
2208 indicates that union semun is to be used for semctl IPC_STAT.
2210 d_semget (d_semget.U):
2211 This variable conditionally defines the HAS_SEMGET symbol, which
2212 indicates to the C program that the semget() routine is available.
2214 d_semop (d_semop.U):
2215 This variable conditionally defines the HAS_SEMOP symbol, which
2216 indicates to the C program that the semop() routine is available.
2218 d_sendmsg (d_sendmsg.U):
2219 This variable conditionally defines the HAS_SENDMSG symbol, which
2220 indicates to the C program that the sendmsg() routine is available.
2222 d_setegid (d_setegid.U):
2223 This variable conditionally defines the HAS_SETEGID symbol, which
2224 indicates to the C program that the setegid() routine is available
2225 to change the effective gid of the current program.
2227 d_seteuid (d_seteuid.U):
2228 This variable conditionally defines the HAS_SETEUID symbol, which
2229 indicates to the C program that the seteuid() routine is available
2230 to change the effective uid of the current program.
2232 d_setgrent (d_setgrent.U):
2233 This variable conditionally defines the HAS_SETGRENT symbol, which
2234 indicates to the C program that the setgrent() routine is available
2235 for initializing sequential access to the group database.
2237 d_setgrent_r (d_setgrent_r.U):
2238 This variable conditionally defines the HAS_SETGRENT_R symbol,
2239 which indicates to the C program that the setgrent_r()
2240 routine is available.
2242 d_setgrps (d_setgrps.U):
2243 This variable conditionally defines the HAS_SETGROUPS symbol, which
2244 indicates to the C program that the setgroups() routine is available
2245 to set the list of process groups.
2247 d_sethent (d_sethent.U):
2248 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
2251 d_sethostent_r (d_sethostent_r.U):
2252 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
2253 which indicates to the C program that the sethostent_r()
2254 routine is available.
2256 d_setitimer (d_setitimer.U):
2257 This variable conditionally defines the HAS_SETITIMER symbol, which
2258 indicates to the C program that the setitimer() routine is available.
2260 d_setlinebuf (d_setlnbuf.U):
2261 This variable conditionally defines the HAS_SETLINEBUF symbol, which
2262 indicates to the C program that the setlinebuf() routine is available
2263 to change stderr or stdout from block-buffered or unbuffered to a
2266 d_setlocale (d_setlocale.U):
2267 This variable conditionally defines HAS_SETLOCALE if setlocale() is
2268 available to handle locale-specific ctype implementations.
2270 d_setlocale_r (d_setlocale_r.U):
2271 This variable conditionally defines the HAS_SETLOCALE_R symbol,
2272 which indicates to the C program that the setlocale_r()
2273 routine is available.
2275 d_setnent (d_setnent.U):
2276 This variable conditionally defines HAS_SETNETENT if setnetent() is
2279 d_setnetent_r (d_setnetent_r.U):
2280 This variable conditionally defines the HAS_SETNETENT_R symbol,
2281 which indicates to the C program that the setnetent_r()
2282 routine is available.
2284 d_setpent (d_setpent.U):
2285 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
2288 d_setpgid (d_setpgid.U):
2289 This variable conditionally defines the HAS_SETPGID symbol if the
2290 setpgid(pid, gpid) function is available to set process group ID.
2292 d_setpgrp (d_setpgrp.U):
2293 This variable conditionally defines HAS_SETPGRP if setpgrp() is
2294 available to set the current process group.
2296 d_setpgrp2 (d_setpgrp2.U):
2297 This variable conditionally defines the HAS_SETPGRP2 symbol, which
2298 indicates to the C program that the setpgrp2() (as in DG/UX) routine
2299 is available to set the current process group.
2301 d_setprior (d_setprior.U):
2302 This variable conditionally defines HAS_SETPRIORITY if setpriority()
2303 is available to set a process's priority.
2305 d_setproctitle (d_setproctitle.U):
2306 This variable conditionally defines the HAS_SETPROCTITLE symbol,
2307 which indicates to the C program that the setproctitle() routine
2310 d_setprotoent_r (d_setprotoent_r.U):
2311 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
2312 which indicates to the C program that the setprotoent_r()
2313 routine is available.
2315 d_setpwent (d_setpwent.U):
2316 This variable conditionally defines the HAS_SETPWENT symbol, which
2317 indicates to the C program that the setpwent() routine is available
2318 for initializing sequential access to the passwd database.
2320 d_setpwent_r (d_setpwent_r.U):
2321 This variable conditionally defines the HAS_SETPWENT_R symbol,
2322 which indicates to the C program that the setpwent_r()
2323 routine is available.
2325 d_setregid (d_setregid.U):
2326 This variable conditionally defines HAS_SETREGID if setregid() is
2327 available to change the real and effective gid of the current
2330 d_setresgid (d_setregid.U):
2331 This variable conditionally defines HAS_SETRESGID if setresgid() is
2332 available to change the real, effective and saved gid of the current
2335 d_setresuid (d_setreuid.U):
2336 This variable conditionally defines HAS_SETREUID if setresuid() is
2337 available to change the real, effective and saved uid of the current
2340 d_setreuid (d_setreuid.U):
2341 This variable conditionally defines HAS_SETREUID if setreuid() is
2342 available to change the real and effective uid of the current
2345 d_setrgid (d_setrgid.U):
2346 This variable conditionally defines the HAS_SETRGID symbol, which
2347 indicates to the C program that the setrgid() routine is available
2348 to change the real gid of the current program.
2350 d_setruid (d_setruid.U):
2351 This variable conditionally defines the HAS_SETRUID symbol, which
2352 indicates to the C program that the setruid() routine is available
2353 to change the real uid of the current program.
2355 d_setsent (d_setsent.U):
2356 This variable conditionally defines HAS_SETSERVENT if setservent() is
2359 d_setservent_r (d_setservent_r.U):
2360 This variable conditionally defines the HAS_SETSERVENT_R symbol,
2361 which indicates to the C program that the setservent_r()
2362 routine is available.
2364 d_setsid (d_setsid.U):
2365 This variable conditionally defines HAS_SETSID if setsid() is
2366 available to set the process group ID.
2368 d_setvbuf (d_setvbuf.U):
2369 This variable conditionally defines the HAS_SETVBUF symbol, which
2370 indicates to the C program that the setvbuf() routine is available
2371 to change buffering on an open stdio stream.
2374 This variable conditionally defines the HAS_SHM symbol, which
2375 indicates that the entire shm*(2) library is present.
2377 d_shmat (d_shmat.U):
2378 This variable conditionally defines the HAS_SHMAT symbol, which
2379 indicates to the C program that the shmat() routine is available.
2381 d_shmatprototype (d_shmat.U):
2382 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
2383 symbol, which indicates that sys/shm.h has a prototype for
2386 d_shmctl (d_shmctl.U):
2387 This variable conditionally defines the HAS_SHMCTL symbol, which
2388 indicates to the C program that the shmctl() routine is available.
2390 d_shmdt (d_shmdt.U):
2391 This variable conditionally defines the HAS_SHMDT symbol, which
2392 indicates to the C program that the shmdt() routine is available.
2394 d_shmget (d_shmget.U):
2395 This variable conditionally defines the HAS_SHMGET symbol, which
2396 indicates to the C program that the shmget() routine is available.
2398 d_sigaction (d_sigaction.U):
2399 This variable conditionally defines the HAS_SIGACTION symbol, which
2400 indicates that the Vr4 sigaction() routine is available.
2402 d_siginfo_si_addr (d_siginfo_si.U):
2403 This variable conditionally defines the HAS_SIGINFO_SI_ADDR symbol,
2404 which indicates that the siginfo_t struct has the si_addr member.
2406 d_siginfo_si_band (d_siginfo_si.U):
2407 This variable conditionally defines the HAS_SIGINFO_SI_BAND symbol,
2408 which indicates that the siginfo_t struct has the si_band member.
2410 d_siginfo_si_errno (d_siginfo_si.U):
2411 This variable conditionally defines the HAS_SIGINFO_SI_ERRNO symbol,
2412 which indicates that the siginfo_t struct has the si_errno member.
2414 d_siginfo_si_fd (d_siginfo_si.U):
2415 This variable conditionally defines the HAS_SIGINFO_SI_FD symbol,
2416 which indicates that the siginfo_t struct has the si_fd member.
2418 d_siginfo_si_pid (d_siginfo_si.U):
2419 This variable conditionally defines the HAS_SIGINFO_SI_PID symbol,
2420 which indicates that the siginfo_t struct has the si_pid member.
2422 d_siginfo_si_status (d_siginfo_si.U):
2423 This variable conditionally defines the HAS_SIGINFO_SI_STATUS symbol,
2424 which indicates that the siginfo_t struct has the si_status member.
2426 d_siginfo_si_uid (d_siginfo_si.U):
2427 This variable conditionally defines the HAS_SIGINFO_SI_UID symbol,
2428 which indicates that the siginfo_t struct has the si_uid member.
2430 d_siginfo_si_value (d_siginfo_si.U):
2431 This variable conditionally defines the HAS_SIGINFO_SI_VALUE symbol,
2432 which indicates that the siginfo_t struct has the si_value member.
2434 d_signbit (d_signbit.U):
2435 This variable conditionally defines the HAS_SIGNBIT symbol, which
2436 indicates to the C program that the signbit() routine is available
2437 and safe to use with perl's intern NV type.
2439 d_sigprocmask (d_sigprocmask.U):
2440 This variable conditionally defines HAS_SIGPROCMASK
2441 if sigprocmask() is available to examine or change the signal mask
2442 of the calling process.
2444 d_sigsetjmp (d_sigsetjmp.U):
2445 This variable conditionally defines the HAS_SIGSETJMP symbol,
2446 which indicates that the sigsetjmp() routine is available to
2447 call setjmp() and optionally save the process's signal mask.
2449 d_sin6_scope_id (d_socket.U):
2450 This variable conditionally defines the HAS_SIN6_SCOPE_ID symbol, which
2451 indicates that a struct sockaddr_in6 structure has the sin6_scope_id
2454 d_sitearch (sitearch.U):
2455 This variable conditionally defines SITEARCH to hold the pathname
2456 of architecture-dependent library files for $package. If
2457 $sitearch is the same as $archlib, then this is set to undef.
2459 d_snprintf (d_snprintf.U):
2460 This variable conditionally defines the HAS_SNPRINTF symbol, which
2461 indicates to the C program that the snprintf () library function
2464 d_sockaddr_in6 (d_socket.U):
2465 This variable conditionally defines the HAS_SOCKADDR_IN6 symbol, which
2466 indicates the availability of a struct sockaddr_in6.
2468 d_sockaddr_sa_len (d_socket.U):
2469 This variable conditionally defines the HAS_SOCKADDR_SA_LEN symbol,
2470 which indicates that a struct sockaddr structure has the sa_len
2473 d_sockatmark (d_sockatmark.U):
2474 This variable conditionally defines the HAS_SOCKATMARK symbol, which
2475 indicates to the C program that the sockatmark() routine is available.
2477 d_sockatmarkproto (d_sockatmarkproto.U):
2478 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
2479 which indicates to the C program that the system provides
2480 a prototype for the sockatmark() function. Otherwise, it is
2481 up to the program to supply one.
2483 d_socket (d_socket.U):
2484 This variable conditionally defines HAS_SOCKET, which indicates
2485 that the BSD socket interface is supported.
2487 d_socklen_t (d_socklen_t.U):
2488 This symbol will be defined if the C compiler supports socklen_t.
2490 d_sockpair (d_socket.U):
2491 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
2492 indicates that the BSD socketpair() is supported.
2494 d_socks5_init (d_socks5_init.U):
2495 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
2496 indicates to the C program that the socks5_init() routine is available.
2498 d_sqrtl (d_sqrtl.U):
2499 This variable conditionally defines the HAS_SQRTL symbol, which
2500 indicates to the C program that the sqrtl() routine is available.
2502 d_srand48_r (d_srand48_r.U):
2503 This variable conditionally defines the HAS_SRAND48_R symbol,
2504 which indicates to the C program that the srand48_r()
2505 routine is available.
2507 d_srandom_r (d_srandom_r.U):
2508 This variable conditionally defines the HAS_SRANDOM_R symbol,
2509 which indicates to the C program that the srandom_r()
2510 routine is available.
2512 d_sresgproto (d_sresgproto.U):
2513 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
2514 which indicates to the C program that the system provides
2515 a prototype for the setresgid() function. Otherwise, it is
2516 up to the program to supply one.
2518 d_sresuproto (d_sresuproto.U):
2519 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
2520 which indicates to the C program that the system provides
2521 a prototype for the setresuid() function. Otherwise, it is
2522 up to the program to supply one.
2525 This variable conditionally defines HAS_STAT if stat() is
2526 available to get file status.
2528 d_statblks (d_statblks.U):
2529 This variable conditionally defines USE_STAT_BLOCKS
2530 if this system has a stat structure declaring
2531 st_blksize and st_blocks.
2533 d_statfs_f_flags (d_statfs_f_flags.U):
2534 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
2535 symbol, which indicates to struct statfs from has f_flags member.
2536 This kind of struct statfs is coming from sys/mount.h (BSD),
2537 not from sys/statfs.h (SYSV).
2539 d_statfs_s (d_statfs_s.U):
2540 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
2541 which indicates that the struct statfs is supported.
2543 d_static_inline (d_static_inline.U):
2544 This variable conditionally defines the HAS_STATIC_INLINE symbol,
2545 which indicates that the C compiler supports C99-style static
2546 inline. That is, the function can't be called from another
2549 d_statvfs (d_statvfs.U):
2550 This variable conditionally defines the HAS_STATVFS symbol, which
2551 indicates to the C program that the statvfs() routine is available.
2553 d_stdio_cnt_lval (d_stdstdio.U):
2554 This variable conditionally defines STDIO_CNT_LVALUE if the
2555 FILE_cnt macro can be used as an lvalue.
2557 d_stdio_ptr_lval (d_stdstdio.U):
2558 This variable conditionally defines STDIO_PTR_LVALUE if the
2559 FILE_ptr macro can be used as an lvalue.
2561 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
2562 This symbol is defined if using the FILE_ptr macro as an lvalue
2563 to increase the pointer by n leaves File_cnt(fp) unchanged.
2565 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
2566 This symbol is defined if using the FILE_ptr macro as an lvalue
2567 to increase the pointer by n has the side effect of decreasing the
2568 value of File_cnt(fp) by n.
2570 d_stdio_stream_array (stdio_streams.U):
2571 This variable tells whether there is an array holding
2574 d_stdiobase (d_stdstdio.U):
2575 This variable conditionally defines USE_STDIO_BASE if this system
2576 has a FILE structure declaring a usable _base field (or equivalent)
2579 d_stdstdio (d_stdstdio.U):
2580 This variable conditionally defines USE_STDIO_PTR if this system
2581 has a FILE structure declaring usable _ptr and _cnt fields (or
2582 equivalent) in stdio.h.
2584 d_strcoll (d_strcoll.U):
2585 This variable conditionally defines HAS_STRCOLL if strcoll() is
2586 available to compare strings using collating information.
2588 d_strerror_l (d_strerror_l.U):
2589 This variable conditionally defines the HAS_STRERROR_L symbol, which
2590 indicates to the C program that the strerror_l() routine is available
2591 to return the error message for a given errno value in a particular
2592 locale (identified by a locale_t object).
2594 d_strerror_r (d_strerror_r.U):
2595 This variable conditionally defines the HAS_STRERROR_R symbol,
2596 which indicates to the C program that the strerror_r()
2597 routine is available.
2599 d_strftime (d_strftime.U):
2600 This variable conditionally defines the HAS_STRFTIME symbol, which
2601 indicates to the C program that the strftime() routine is available.
2603 d_strlcat (d_strlcat.U):
2604 This variable conditionally defines the HAS_STRLCAT symbol, which
2605 indicates to the C program that the strlcat () routine is available.
2607 d_strlcpy (d_strlcpy.U):
2608 This variable conditionally defines the HAS_STRLCPY symbol, which
2609 indicates to the C program that the strlcpy () routine is available.
2611 d_strnlen (d_strnlen.U):
2612 This variable conditionally defines the HAS_STRNLEN symbol, which
2613 indicates to the C program that the strnlen () routine is available.
2615 d_strtod (d_strtod.U):
2616 This variable conditionally defines the HAS_STRTOD symbol, which
2617 indicates to the C program that the strtod() routine is available
2618 to provide better numeric string conversion than atof().
2620 d_strtol (d_strtol.U):
2621 This variable conditionally defines the HAS_STRTOL symbol, which
2622 indicates to the C program that the strtol() routine is available
2623 to provide better numeric string conversion than atoi() and friends.
2625 d_strtold (d_strtold.U):
2626 This variable conditionally defines the HAS_STRTOLD symbol, which
2627 indicates to the C program that the strtold() routine is available.
2629 d_strtold_l (d_strtold_l.U):
2630 This variable conditionally defines the HAS_STRTOLD_L symbol, which
2631 indicates to the C program that the strtold_l() routine is available.
2633 d_strtoll (d_strtoll.U):
2634 This variable conditionally defines the HAS_STRTOLL symbol, which
2635 indicates to the C program that the strtoll() routine is available.
2637 d_strtoq (d_strtoq.U):
2638 This variable conditionally defines the HAS_STRTOQ symbol, which
2639 indicates to the C program that the strtoq() routine is available.
2641 d_strtoul (d_strtoul.U):
2642 This variable conditionally defines the HAS_STRTOUL symbol, which
2643 indicates to the C program that the strtoul() routine is available
2644 to provide conversion of strings to unsigned long.
2646 d_strtoull (d_strtoull.U):
2647 This variable conditionally defines the HAS_STRTOULL symbol, which
2648 indicates to the C program that the strtoull() routine is available.
2650 d_strtouq (d_strtouq.U):
2651 This variable conditionally defines the HAS_STRTOUQ symbol, which
2652 indicates to the C program that the strtouq() routine is available.
2654 d_strxfrm (d_strxfrm.U):
2655 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2656 available to transform strings.
2658 d_suidsafe (d_dosuid.U):
2659 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2660 if setuid scripts can be secure. This test looks in /dev/fd/.
2662 d_symlink (d_symlink.U):
2663 This variable conditionally defines the HAS_SYMLINK symbol, which
2664 indicates to the C program that the symlink() routine is available
2665 to create symbolic links.
2667 d_syscall (d_syscall.U):
2668 This variable conditionally defines HAS_SYSCALL if syscall() is
2669 available call arbitrary system calls.
2671 d_syscallproto (d_syscallproto.U):
2672 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2673 which indicates to the C program that the system provides
2674 a prototype for the syscall() function. Otherwise, it is
2675 up to the program to supply one.
2677 d_sysconf (d_sysconf.U):
2678 This variable conditionally defines the HAS_SYSCONF symbol, which
2679 indicates to the C program that the sysconf() routine is available
2680 to determine system related limits and options.
2682 d_sysernlst (d_strerror.U):
2683 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2684 is available to translate error numbers to the symbolic name.
2686 d_syserrlst (d_strerror.U):
2687 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2688 available to translate error numbers to strings.
2690 d_system (d_system.U):
2691 This variable conditionally defines HAS_SYSTEM if system() is
2692 available to issue a shell command.
2694 d_tcgetpgrp (d_tcgtpgrp.U):
2695 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2696 indicates to the C program that the tcgetpgrp() routine is available.
2697 to get foreground process group ID.
2699 d_tcsetpgrp (d_tcstpgrp.U):
2700 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2701 indicates to the C program that the tcsetpgrp() routine is available
2702 to set foreground process group ID.
2704 d_telldir (d_readdir.U):
2705 This variable conditionally defines HAS_TELLDIR if telldir() is
2708 d_telldirproto (d_telldirproto.U):
2709 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2710 which indicates to the C program that the system provides
2711 a prototype for the telldir() function. Otherwise, it is
2712 up to the program to supply one.
2714 d_tgamma (d_tgamma.U):
2715 This variable conditionally defines the HAS_TGAMMA symbol, which
2716 indicates to the C program that the tgamma() routine is available
2717 for the gamma function. See also d_lgamma.
2719 d_thread_safe_nl_langinfo_l (d_nl_langinfo_l.U):
2720 This variable contains the eventual value of the
2721 HAS_THREAD_SAFE_NL_LANGINFO_L symbol, which indicates if the
2722 nl_langinfo_l() function exists and is thread-safe.
2725 This variable conditionally defines the HAS_TIME symbol, which indicates
2726 that the time() routine exists. The time() routine is normally
2727 provided on UNIX systems.
2729 d_timegm (d_timegm.U):
2730 This variable conditionally defines the HAS_TIMEGM symbol, which
2731 indicates to the C program that the timegm () routine is available.
2733 d_times (d_times.U):
2734 This variable conditionally defines the HAS_TIMES symbol, which indicates
2735 that the times() routine exists. The times() routine is normally
2736 provided on UNIX systems. You may have to include <sys/times.h>.
2738 d_tm_tm_gmtoff (i_time.U):
2739 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2740 indicates to the C program that the struct tm has the tm_gmtoff field.
2742 d_tm_tm_zone (i_time.U):
2743 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2744 indicates to the C program that the struct tm has the tm_zone field.
2746 d_tmpnam_r (d_tmpnam_r.U):
2747 This variable conditionally defines the HAS_TMPNAM_R symbol,
2748 which indicates to the C program that the tmpnam_r()
2749 routine is available.
2751 d_trunc (d_trunc.U):
2752 This variable conditionally defines the HAS_TRUNC symbol, which
2753 indicates to the C program that the trunc() routine is available
2754 to round doubles towards zero.
2756 d_truncate (d_truncate.U):
2757 This variable conditionally defines HAS_TRUNCATE if truncate() is
2758 available to truncate files.
2760 d_truncl (d_truncl.U):
2761 This variable conditionally defines the HAS_TRUNCL symbol, which
2762 indicates to the C program that the truncl() routine is available
2763 to round long doubles towards zero. If copysignl is also present,
2764 we can emulate modfl.
2766 d_ttyname_r (d_ttyname_r.U):
2767 This variable conditionally defines the HAS_TTYNAME_R symbol,
2768 which indicates to the C program that the ttyname_r()
2769 routine is available.
2771 d_tzname (d_tzname.U):
2772 This variable conditionally defines HAS_TZNAME if tzname[] is
2773 available to access timezone names.
2775 d_u32align (d_u32align.U):
2776 This variable tells whether you must access character data
2777 through U32-aligned pointers.
2779 d_ualarm (d_ualarm.U):
2780 This variable conditionally defines the HAS_UALARM symbol, which
2781 indicates to the C program that the ualarm() routine is available.
2783 d_umask (d_umask.U):
2784 This variable conditionally defines the HAS_UMASK symbol, which
2785 indicates to the C program that the umask() routine is available.
2786 to set and get the value of the file creation mask.
2788 d_uname (d_gethname.U):
2789 This variable conditionally defines the HAS_UNAME symbol, which
2790 indicates to the C program that the uname() routine may be
2791 used to derive the host name.
2793 d_union_semun (d_union_semun.U):
2794 This variable conditionally defines HAS_UNION_SEMUN if the
2795 union semun is defined by including <sys/sem.h>.
2797 d_unlinkat (d_fsat.U):
2798 This variable conditionally defines the HAS_UNLINKAT symbol, which
2799 indicates the POSIX unlinkat() function isavailable.
2801 d_unordered (d_unordered.U):
2802 This variable conditionally defines the HAS_UNORDERED symbol, which
2803 indicates to the C program that the unordered() routine is available.
2805 d_unsetenv (d_unsetenv.U):
2806 This variable conditionally defines the HAS_UNSETENV symbol, which
2807 indicates to the C program that the unsetenv () routine is available.
2809 d_uselocale (d_newlocale.U):
2810 This variable conditionally defines the HAS_USELOCALE symbol, which
2811 indicates to the C program that the uselocale() routine is available
2812 to set the current locale for the calling thread.
2814 d_usleep (d_usleep.U):
2815 This variable conditionally defines HAS_USLEEP if usleep() is
2816 available to do high granularity sleeps.
2818 d_usleepproto (d_usleepproto.U):
2819 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2820 which indicates to the C program that the system provides
2821 a prototype for the usleep() function. Otherwise, it is
2822 up to the program to supply one.
2824 d_ustat (d_ustat.U):
2825 This variable conditionally defines HAS_USTAT if ustat() is
2826 available to query file system statistics by dev_t.
2828 d_vendorarch (vendorarch.U):
2829 This variable conditionally defined PERL_VENDORARCH.
2831 d_vendorbin (vendorbin.U):
2832 This variable conditionally defines PERL_VENDORBIN.
2834 d_vendorlib (vendorlib.U):
2835 This variable conditionally defines PERL_VENDORLIB.
2837 d_vendorscript (vendorscript.U):
2838 This variable conditionally defines PERL_VENDORSCRIPT.
2840 d_vfork (d_vfork.U):
2841 This variable conditionally defines the HAS_VFORK symbol, which
2842 indicates the vfork() routine is available.
2844 d_void_closedir (d_closedir.U):
2845 This variable conditionally defines VOID_CLOSEDIR if closedir()
2846 does not return a value.
2848 d_voidsig (d_voidsig.U):
2849 This variable conditionally defines VOIDSIG if this system
2850 declares "void (*signal(...))()" in signal.h. The old way was to
2851 declare it as "int (*signal(...))()".
2853 d_voidtty (i_sysioctl.U):
2854 This variable conditionally defines USE_IOCNOTTY to indicate that the
2855 ioctl() call with TIOCNOTTY should be used to void tty association.
2856 Otherwise (on USG probably), it is enough to close the standard file
2857 descriptors and do a setpgrp().
2859 d_vsnprintf (d_snprintf.U):
2860 This variable conditionally defines the HAS_VSNPRINTF symbol, which
2861 indicates to the C program that the vsnprintf () library function
2864 d_wait4 (d_wait4.U):
2865 This variable conditionally defines the HAS_WAIT4 symbol, which
2866 indicates the wait4() routine is available.
2868 d_waitpid (d_waitpid.U):
2869 This variable conditionally defines HAS_WAITPID if waitpid() is
2870 available to wait for child process.
2872 d_wcscmp (d_wcscmp.U):
2873 This variable conditionally defines the HAS_WCSCMP symbol if the
2874 wcscmp() routine is available and can be used to compare wide
2877 d_wcstombs (d_wcstombs.U):
2878 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2879 indicates to the C program that the wcstombs() routine is available
2880 to convert wide character strings to multibyte strings.
2882 d_wcsxfrm (d_wcsxfrm.U):
2883 This variable conditionally defines the HAS_WCSXFRM symbol if the
2884 wcsxfrm() routine is available and can be used to compare wide
2887 d_wctomb (d_wctomb.U):
2888 This variable conditionally defines the HAS_WCTOMB symbol, which
2889 indicates to the C program that the wctomb() routine is available
2890 to convert a wide character to a multibyte.
2892 d_writev (d_writev.U):
2893 This variable conditionally defines the HAS_WRITEV symbol, which
2894 indicates to the C program that the writev() routine is available.
2897 This variable conditionally defines the symbol XENIX, which alerts
2898 the C program that it runs under Xenix.
2901 This variable is used internally by Configure to determine the
2902 full pathname (if any) of the date program. After Configure runs,
2903 the value is reset to a plain "date" and is not useful.
2905 db_hashtype (i_db.U):
2906 This variable contains the type of the hash structure element
2907 in the <db.h> header file. In older versions of DB, it was
2908 int, while in newer ones it is u_int32_t.
2910 db_prefixtype (i_db.U):
2911 This variable contains the type of the prefix structure element
2912 in the <db.h> header file. In older versions of DB, it was
2913 int, while in newer ones it is size_t.
2915 db_version_major (i_db.U):
2916 This variable contains the major version number of
2917 Berkeley DB found in the <db.h> header file.
2919 db_version_minor (i_db.U):
2920 This variable contains the minor version number of
2921 Berkeley DB found in the <db.h> header file.
2922 For DB version 1 this is always 0.
2924 db_version_patch (i_db.U):
2925 This variable contains the patch version number of
2926 Berkeley DB found in the <db.h> header file.
2927 For DB version 1 this is always 0.
2929 default_inc_excludes_dot (defaultincdot.U):
2930 When defined, remove the legacy '.' from @INC
2932 direntrytype (i_dirent.U):
2933 This symbol is set to 'struct direct' or 'struct dirent' depending on
2934 whether dirent is available or not. You should use this pseudo type to
2935 portably declare your directory entries.
2938 This variable contains the extension that is to be used for the
2939 dynamically loaded modules that perl generates.
2942 This variable contains the name of the dynamic loading file that
2943 will be used with the package.
2945 doubleinfbytes (infnan.U):
2946 This variable contains comma-separated list of hexadecimal bytes
2947 for the double precision infinity.
2949 doublekind (longdblfio.U):
2950 This variable, if defined, encodes the type of a double:
2951 1 = IEEE 754 32-bit little endian,
2952 2 = IEEE 754 32-bit big endian,
2953 3 = IEEE 754 64-bit little endian,
2954 4 = IEEE 754 64-bit big endian,
2955 5 = IEEE 754 128-bit little endian,
2956 6 = IEEE 754 128-bit big endian,
2957 7 = IEEE 754 64-bit mixed endian le-be,
2958 8 = IEEE 754 64-bit mixed endian be-le,
2959 9 = VAX 32bit little endian F float format
2960 10 = VAX 64bit little endian D float format
2961 11 = VAX 64bit little endian G float format
2962 12 = IBM 32bit format
2963 13 = IBM 64bit format
2964 14 = Cray 64bit format
2965 -1 = unknown format.
2967 doublemantbits (mantbits.U):
2968 This symbol, if defined, tells how many mantissa bits
2969 there are in double precision floating point format.
2970 Note that this is usually DBL_MANT_DIG minus one, since
2971 with the standard IEEE 754 formats DBL_MANT_DIG includes
2972 the implicit bit which doesn't really exist.
2974 doublenanbytes (infnan.U):
2975 This variable contains comma-separated list of hexadecimal bytes
2976 for the double precision not-a-number.
2978 doublesize (doublesize.U):
2979 This variable contains the value of the DOUBLESIZE symbol, which
2980 indicates to the C program how many bytes there are in a double.
2982 drand01 (randfunc.U):
2983 Indicates the macro to be used to generate normalized
2984 random numbers. Uses randfunc, often divided by
2985 (double) (((unsigned long) 1 << randbits)) in order to
2986 normalize the result.
2987 In C programs, the macro 'Drand01' is mapped to drand01.
2989 drand48_r_proto (d_drand48_r.U):
2990 This variable encodes the prototype of drand48_r.
2991 It is zero if d_drand48_r is undef, and one of the
2992 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2995 dtrace (usedtrace.U):
2996 This variable holds the location of the dtrace executable.
2998 dtraceobject (dtraceobject.U):
2999 Whether we need to build an object file with the dtrace tool.
3001 dtracexnolibs (dtraceobject.U):
3002 Whether dtrace accepts -xnolibs. If available we call dtrace -h
3003 and dtrace -G with -xnolibs to allow dtrace to run in a jail on
3006 dynamic_ext (Extensions.U):
3007 This variable holds a list of XS extension files we want to
3008 link dynamically into the package. It is used by Makefile.
3010 eagain (nblock_io.U):
3011 This variable bears the symbolic errno code set by read() when no
3012 data is present on the file and non-blocking I/O was enabled (otherwise,
3013 read() blocks naturally).
3016 This variable conditionally defines EBCDIC if this
3017 system uses EBCDIC encoding.
3020 This variable is used internally by Configure to determine the
3021 full pathname (if any) of the echo program. After Configure runs,
3022 the value is reset to a plain "echo" and is not useful.
3025 This variable is used internally by Configure to determine the
3026 full pathname (if any) of the egrep program. After Configure runs,
3027 the value is reset to a plain "egrep" and is not useful.
3030 This variable is defined but not used by Configure.
3031 The value is the empty string and is not useful.
3033 endgrent_r_proto (d_endgrent_r.U):
3034 This variable encodes the prototype of endgrent_r.
3035 It is zero if d_endgrent_r is undef, and one of the
3036 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
3039 endhostent_r_proto (d_endhostent_r.U):
3040 This variable encodes the prototype of endhostent_r.
3041 It is zero if d_endhostent_r is undef, and one of the
3042 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
3045 endnetent_r_proto (d_endnetent_r.U):
3046 This variable encodes the prototype of endnetent_r.
3047 It is zero if d_endnetent_r is undef, and one of the
3048 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
3051 endprotoent_r_proto (d_endprotoent_r.U):
3052 This variable encodes the prototype of endprotoent_r.
3053 It is zero if d_endprotoent_r is undef, and one of the
3054 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
3057 endpwent_r_proto (d_endpwent_r.U):
3058 This variable encodes the prototype of endpwent_r.
3059 It is zero if d_endpwent_r is undef, and one of the
3060 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
3063 endservent_r_proto (d_endservent_r.U):
3064 This variable encodes the prototype of endservent_r.
3065 It is zero if d_endservent_r is undef, and one of the
3066 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
3070 When running under Eunice this variable contains a command which will
3071 convert a shell script to the proper form of text file for it to be
3072 executable by the shell. On other systems it is a no-op.
3075 This is an old synonym for _exe.
3078 This variable is used internally by Configure to determine the
3079 full pathname (if any) of the expr program. After Configure runs,
3080 the value is reset to a plain "expr" and is not useful.
3082 extensions (Extensions.U):
3083 This variable holds a list of all extension files (both XS and
3084 non-xs) installed with the package. It is propagated to Config.pm
3085 and is typically used to test whether a particular extension
3089 ANSI C requires 'extern' where C++ requires 'extern "C"'. This
3090 variable can be used in Configure to do the right thing.
3093 This variable holds a list of extra modules to install.
3095 fflushall (fflushall.U):
3096 This symbol, if defined, tells that to flush
3097 all pending stdio output one must loop through all
3098 the stdio file handles stored in an array and fflush them.
3099 Note that if fflushNULL is defined, fflushall will not
3100 even be probed for and will be left undefined.
3102 fflushNULL (fflushall.U):
3103 This symbol, if defined, tells that fflush(NULL) correctly
3104 flushes all pending stdio output without side effects. In
3105 particular, on some platforms calling fflush(NULL) *still*
3106 corrupts STDIN if it is a pipe.
3109 This variable is defined but not used by Configure.
3110 The value is the empty string and is not useful.
3112 firstmakefile (Unix.U):
3113 This variable defines the first file searched by make. On unix,
3114 it is makefile (then Makefile). On case-insensitive systems,
3115 it might be something else. This is only used to deal with
3116 convoluted make depend tricks.
3119 This variable is defined but not used by Configure.
3120 The value is the empty string and is not useful.
3122 fpossize (fpossize.U):
3123 This variable contains the size of a fpostype in bytes.
3125 fpostype (fpostype.U):
3126 This variable defines Fpos_t to be something like fpos_t, long,
3127 uint, or whatever type is used to declare file positions in libc.
3129 freetype (mallocsrc.U):
3130 This variable contains the return type of free(). It is usually
3131 void, but occasionally int.
3134 This variable contains the command used by Configure
3135 to copy files from the target host. Useful and available
3136 only during Perl build.
3137 The string ':' if not cross-compiling.
3140 This variable contains the full pathname to 'ar', whether or
3141 not the user has specified 'portability'. This is only used
3145 This variable contains the full pathname to 'csh', whether or
3146 not the user has specified 'portability'. This is only used
3147 in the compiled C program, and we assume that all systems which
3148 can share this executable will have the same full pathname to
3151 full_sed (Loc_sed.U):
3152 This variable contains the full pathname to 'sed', whether or
3153 not the user has specified 'portability'. This is only used
3154 in the compiled C program, and we assume that all systems which
3155 can share this executable will have the same full pathname to
3158 gccansipedantic (gccvers.U):
3159 If GNU cc (gcc) is used, this variable will enable (if set) the
3160 -ansi and -pedantic ccflags for building core files (through
3161 cflags script). (See Porting/pumpkin.pod for full description).
3163 gccosandvers (gccvers.U):
3164 If GNU cc (gcc) is used, this variable holds the operating system
3165 and version used to compile gcc. It is set to '' if not gcc,
3166 or if nothing useful can be parsed as the os version.
3168 gccversion (gccvers.U):
3169 If GNU cc (gcc) is used, this variable holds '1' or '2' to
3170 indicate whether the compiler is version 1 or 2. This is used in
3171 setting some of the default cflags. It is set to '' if not gcc.
3173 getgrent_r_proto (d_getgrent_r.U):
3174 This variable encodes the prototype of getgrent_r.
3175 It is zero if d_getgrent_r is undef, and one of the
3176 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
3179 getgrgid_r_proto (d_getgrgid_r.U):
3180 This variable encodes the prototype of getgrgid_r.
3181 It is zero if d_getgrgid_r is undef, and one of the
3182 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
3185 getgrnam_r_proto (d_getgrnam_r.U):
3186 This variable encodes the prototype of getgrnam_r.
3187 It is zero if d_getgrnam_r is undef, and one of the
3188 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
3191 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
3192 This variable encodes the prototype of gethostbyaddr_r.
3193 It is zero if d_gethostbyaddr_r is undef, and one of the
3194 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
3197 gethostbyname_r_proto (d_gethostbyname_r.U):
3198 This variable encodes the prototype of gethostbyname_r.
3199 It is zero if d_gethostbyname_r is undef, and one of the
3200 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
3203 gethostent_r_proto (d_gethostent_r.U):
3204 This variable encodes the prototype of gethostent_r.
3205 It is zero if d_gethostent_r is undef, and one of the
3206 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
3209 getlogin_r_proto (d_getlogin_r.U):
3210 This variable encodes the prototype of getlogin_r.
3211 It is zero if d_getlogin_r is undef, and one of the
3212 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
3215 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
3216 This variable encodes the prototype of getnetbyaddr_r.
3217 It is zero if d_getnetbyaddr_r is undef, and one of the
3218 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
3221 getnetbyname_r_proto (d_getnetbyname_r.U):
3222 This variable encodes the prototype of getnetbyname_r.
3223 It is zero if d_getnetbyname_r is undef, and one of the
3224 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
3227 getnetent_r_proto (d_getnetent_r.U):
3228 This variable encodes the prototype of getnetent_r.
3229 It is zero if d_getnetent_r is undef, and one of the
3230 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
3233 getprotobyname_r_proto (d_getprotobyname_r.U):
3234 This variable encodes the prototype of getprotobyname_r.
3235 It is zero if d_getprotobyname_r is undef, and one of the
3236 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
3239 getprotobynumber_r_proto (d_getprotobynumber_r.U):
3240 This variable encodes the prototype of getprotobynumber_r.
3241 It is zero if d_getprotobynumber_r is undef, and one of the
3242 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
3245 getprotoent_r_proto (d_getprotoent_r.U):
3246 This variable encodes the prototype of getprotoent_r.
3247 It is zero if d_getprotoent_r is undef, and one of the
3248 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
3251 getpwent_r_proto (d_getpwent_r.U):
3252 This variable encodes the prototype of getpwent_r.
3253 It is zero if d_getpwent_r is undef, and one of the
3254 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
3257 getpwnam_r_proto (d_getpwnam_r.U):
3258 This variable encodes the prototype of getpwnam_r.
3259 It is zero if d_getpwnam_r is undef, and one of the
3260 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
3263 getpwuid_r_proto (d_getpwuid_r.U):
3264 This variable encodes the prototype of getpwuid_r.
3265 It is zero if d_getpwuid_r is undef, and one of the
3266 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
3269 getservbyname_r_proto (d_getservbyname_r.U):
3270 This variable encodes the prototype of getservbyname_r.
3271 It is zero if d_getservbyname_r is undef, and one of the
3272 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
3275 getservbyport_r_proto (d_getservbyport_r.U):
3276 This variable encodes the prototype of getservbyport_r.
3277 It is zero if d_getservbyport_r is undef, and one of the
3278 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
3281 getservent_r_proto (d_getservent_r.U):
3282 This variable encodes the prototype of getservent_r.
3283 It is zero if d_getservent_r is undef, and one of the
3284 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
3287 getspnam_r_proto (d_getspnam_r.U):
3288 This variable encodes the prototype of getspnam_r.
3289 It is zero if d_getspnam_r is undef, and one of the
3290 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
3294 This variable contains the format string used for printing a Gid_t.
3296 gidsign (gidsign.U):
3297 This variable contains the signedness of a gidtype.
3298 1 for unsigned, -1 for signed.
3300 gidsize (gidsize.U):
3301 This variable contains the size of a gidtype in bytes.
3303 gidtype (gidtype.U):
3304 This variable defines Gid_t to be something like gid_t, int,
3305 ushort, or whatever type is used to declare the return type
3306 of getgid(). Typically, it is the type of group ids in the kernel.
3309 This variable holds the general path (space-separated) used to
3310 find libraries. It may contain directories that do not exist on
3311 this platform, libpth is the cleaned-up version.
3314 This variable is used internally by Configure to determine the
3315 full pathname (if any) of the gmake program. After Configure runs,
3316 the value is reset to a plain "gmake" and is not useful.
3318 gmtime_r_proto (d_gmtime_r.U):
3319 This variable encodes the prototype of gmtime_r.
3320 It is zero if d_gmtime_r is undef, and one of the
3321 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
3324 gnulibc_version (d_gnulibc.U):
3325 This variable contains the version number of the GNU C library.
3326 It is usually something like '2.2.5'. It is a plain '' if this
3327 is not the GNU C library, or if the version is unknown.
3330 This variable is used internally by Configure to determine the
3331 full pathname (if any) of the grep program. After Configure runs,
3332 the value is reset to a plain "grep" and is not useful.
3335 This variable contains a command that produces the text of the
3336 /etc/group file. This is normally "cat /etc/group", but can be
3337 "ypcat group" when NIS is used.
3338 On some systems, such as os390, there may be no equivalent
3339 command, in which case this variable is unset.
3341 groupstype (groupstype.U):
3342 This variable defines Groups_t to be something like gid_t, int,
3343 ushort, or whatever type is used for the second argument to
3344 getgroups() and setgroups(). Usually, this is the same as
3345 gidtype (gid_t), but sometimes it isn't.
3348 This variable is used internally by Configure to determine the
3349 full pathname (if any) of the gzip program. After Configure runs,
3350 the value is reset to a plain "gzip" and is not useful.
3352 h_fcntl (h_fcntl.U):
3353 This is variable gets set in various places to tell i_fcntl that
3354 <fcntl.h> should be included.
3356 h_sysfile (h_sysfile.U):
3357 This is variable gets set in various places to tell i_sys_file that
3358 <sys/file.h> should be included.
3361 Gives the type of hints used for previous answers. May be one of
3362 "default", "recommended" or "previous".
3365 This variable contains a command that produces the text of the
3366 /etc/hosts file. This is normally "cat /etc/hosts", but can be
3367 "ypcat hosts" when NIS is used.
3368 On some systems, such as os390, there may be no equivalent
3369 command, in which case this variable is unset.
3371 hostgenerate (Cross.U):
3372 This variable contains the path to a generate_uudmap binary that
3373 can be run on the host OS when cross-compiling. Useful and
3374 available only during Perl build.
3375 Empty string '' if not cross-compiling.
3377 hostosname (Cross.U):
3378 This variable contains the original value of '$^O' for hostperl
3379 when cross-compiling. This is useful to pick the proper tools
3380 when running build code in the host.
3381 Empty string '' if not cross-compiling.
3384 This variable contains the path to a miniperl binary that can be
3385 run on the host OS when cross-compiling. Useful and available only
3387 Empty string '' if not cross-compiling.
3389 html1dir (html1dir.U):
3390 This variable contains the name of the directory in which html
3391 source pages are to be put. This directory is for pages
3392 that describe whole programs, not libraries or modules. It
3393 is intended to correspond roughly to section 1 of the Unix
3396 html1direxp (html1dir.U):
3397 This variable is the same as the html1dir variable, but is filename
3398 expanded at configuration time, for convenient use in makefiles.
3400 html3dir (html3dir.U):
3401 This variable contains the name of the directory in which html
3402 source pages are to be put. This directory is for pages
3403 that describe libraries or modules. It is intended to
3404 correspond roughly to section 3 of the Unix manuals.
3406 html3direxp (html3dir.U):
3407 This variable is the same as the html3dir variable, but is filename
3408 expanded at configuration time, for convenient use in makefiles.
3411 This variable is the size of an I16 in bytes.
3414 This variable contains the C type used for Perl's I16.
3417 This variable is the size of an I32 in bytes.
3420 This variable contains the C type used for Perl's I32.
3423 This variable is the size of an I64 in bytes.
3426 This variable contains the C type used for Perl's I64.
3429 This variable is the size of an I8 in bytes.
3432 This variable contains the C type used for Perl's I8.
3434 i_arpainet (i_arpainet.U):
3435 This variable conditionally defines the I_ARPA_INET symbol,
3436 and indicates whether a C program should include <arpa/inet.h>.
3439 This variable conditionally defines the I_BFD symbol, and
3440 indicates whether a C program can include <bfd.h>.
3442 i_bsdioctl (i_sysioctl.U):
3443 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
3444 indicates to the C program that <sys/bsdioctl.h> exists and should
3447 i_crypt (i_crypt.U):
3448 This variable conditionally defines the I_CRYPT symbol, and indicates
3449 whether a C program should include <crypt.h>.
3452 This variable conditionally defines the I_DB symbol, and indicates
3453 whether a C program may include Berkeley's DB include file <db.h>.
3456 This variable conditionally defines the I_DBM symbol, which
3457 indicates to the C program that <dbm.h> exists and should
3460 i_dirent (i_dirent.U):
3461 This variable conditionally defines I_DIRENT, which indicates
3462 to the C program that it should include <dirent.h>.
3464 i_dlfcn (i_dlfcn.U):
3465 This variable conditionally defines the I_DLFCN symbol, which
3466 indicates to the C program that <dlfcn.h> exists and should
3469 i_execinfo (i_execinfo.U):
3470 This variable conditionally defines the I_EXECINFO symbol, and indicates
3471 whether a C program may include <execinfo.h>, for backtrace() support.
3473 i_fcntl (i_fcntl.U):
3474 This variable controls the value of I_FCNTL (which tells
3475 the C program to include <fcntl.h>).
3478 This variable conditionally defines the I_FENV symbol, which
3479 indicates to the C program that <fenv.h> exists and should
3483 This variable conditionally defines the I_FP symbol, and indicates
3484 whether a C program should include <fp.h>.
3486 i_fp_class (i_fp_class.U):
3487 This variable conditionally defines the I_FP_CLASS symbol, and indicates
3488 whether a C program should include <fp_class.h>.
3491 This variable conditionally defines the I_GDBM symbol, which
3492 indicates to the C program that <gdbm.h> exists and should
3495 i_gdbm_ndbm (i_ndbm.U):
3496 This variable conditionally defines the I_GDBM_NDBM symbol, which
3497 indicates to the C program that <gdbm-ndbm.h> exists and should
3498 be included. This is the location of the ndbm.h compatibility file
3501 i_gdbmndbm (i_ndbm.U):
3502 This variable conditionally defines the I_GDBMNDBM symbol, which
3503 indicates to the C program that <gdbm/ndbm.h> exists and should
3504 be included. This was the location of the ndbm.h compatibility file
3508 This variable conditionally defines the I_GRP symbol, and indicates
3509 whether a C program should include <grp.h>.
3511 i_ieeefp (i_ieeefp.U):
3512 This variable conditionally defines the I_IEEEFP symbol, and indicates
3513 whether a C program should include <ieeefp.h>.
3515 i_inttypes (i_inttypes.U):
3516 This variable conditionally defines the I_INTTYPES symbol,
3517 and indicates whether a C program should include <inttypes.h>.
3519 i_langinfo (i_langinfo.U):
3520 This variable conditionally defines the I_LANGINFO symbol,
3521 and indicates whether a C program should include <langinfo.h>.
3523 i_libutil (i_libutil.U):
3524 This variable conditionally defines the I_LIBUTIL symbol, and indicates
3525 whether a C program should include <libutil.h>.
3527 i_locale (i_locale.U):
3528 This variable conditionally defines the I_LOCALE symbol,
3529 and indicates whether a C program should include <locale.h>.
3531 i_machcthr (i_machcthr.U):
3532 This variable conditionally defines the I_MACH_CTHREADS symbol,
3533 and indicates whether a C program should include <mach/cthreads.h>.
3535 i_malloc (i_malloc.U):
3536 This variable conditionally defines the I_MALLOC symbol, and indicates
3537 whether a C program should include <malloc.h>.
3539 i_mallocmalloc (i_mallocmalloc.U):
3540 This variable conditionally defines the I_MALLOCMALLOC symbol,
3541 and indicates whether a C program should include <malloc/malloc.h>.
3543 i_mntent (i_mntent.U):
3544 This variable conditionally defines the I_MNTENT symbol, and indicates
3545 whether a C program should include <mntent.h>.
3548 This variable conditionally defines the I_NDBM symbol, which
3549 indicates to the C program that <ndbm.h> exists and should
3552 i_netdb (i_netdb.U):
3553 This variable conditionally defines the I_NETDB symbol, and indicates
3554 whether a C program should include <netdb.h>.
3556 i_neterrno (i_neterrno.U):
3557 This variable conditionally defines the I_NET_ERRNO symbol, which
3558 indicates to the C program that <net/errno.h> exists and should
3561 i_netinettcp (i_netinettcp.U):
3562 This variable conditionally defines the I_NETINET_TCP symbol,
3563 and indicates whether a C program should include <netinet/tcp.h>.
3566 This variable conditionally defines I_NETINET_IN, which indicates
3567 to the C program that it should include <netinet/in.h>. Otherwise,
3568 you may try <sys/in.h>.
3571 This variable conditionally defines the I_POLL symbol, and indicates
3572 whether a C program should include <poll.h>.
3575 This variable conditionally defines the I_PROT symbol, and indicates
3576 whether a C program should include <prot.h>.
3578 i_pthread (i_pthread.U):
3579 This variable conditionally defines the I_PTHREAD symbol,
3580 and indicates whether a C program should include <pthread.h>.
3583 This variable conditionally defines I_PWD, which indicates
3584 to the C program that it should include <pwd.h>.
3586 i_quadmath (i_quadmath.U):
3587 This variable conditionally defines I_QUADMATH, which indicates
3588 to the C program that it should include <quadmath.h>.
3590 i_rpcsvcdbm (i_dbm.U):
3591 This variable conditionally defines the I_RPCSVC_DBM symbol, which
3592 indicates to the C program that <rpcsvc/dbm.h> exists and should
3593 be included. Some System V systems might need this instead of <dbm.h>.
3595 i_sgtty (i_termio.U):
3596 This variable conditionally defines the I_SGTTY symbol, which
3597 indicates to the C program that it should include <sgtty.h> rather
3600 i_shadow (i_shadow.U):
3601 This variable conditionally defines the I_SHADOW symbol, and indicates
3602 whether a C program should include <shadow.h>.
3604 i_socks (i_socks.U):
3605 This variable conditionally defines the I_SOCKS symbol, and indicates
3606 whether a C program should include <socks.h>.
3608 i_stdbool (i_stdbool.U):
3609 This variable conditionally defines the I_STDBOOL symbol, which
3610 indicates to the C program that <stdbool.h> exists and should
3613 i_stdint (i_stdint.U):
3614 This variable conditionally defines the I_STDINT symbol, which
3615 indicates to the C program that <stdint.h> exists and should
3618 i_stdlib (i_stdlib.U):
3619 This variable unconditionally defines the I_STDLIB symbol.
3621 i_sunmath (i_sunmath.U):
3622 This variable conditionally defines the I_SUNMATH symbol, and indicates
3623 whether a C program should include <sunmath.h>.
3625 i_sysaccess (i_sysaccess.U):
3626 This variable conditionally defines the I_SYS_ACCESS symbol,
3627 and indicates whether a C program should include <sys/access.h>.
3629 i_sysdir (i_sysdir.U):
3630 This variable conditionally defines the I_SYS_DIR symbol, and indicates
3631 whether a C program should include <sys/dir.h>.
3633 i_sysfile (i_sysfile.U):
3634 This variable conditionally defines the I_SYS_FILE symbol, and indicates
3635 whether a C program should include <sys/file.h> to get R_OK and friends.
3637 i_sysfilio (i_sysioctl.U):
3638 This variable conditionally defines the I_SYS_FILIO symbol, which
3639 indicates to the C program that <sys/filio.h> exists and should
3640 be included in preference to <sys/ioctl.h>.
3643 This variable conditionally defines I_SYS_IN, which indicates
3644 to the C program that it should include <sys/in.h> instead of
3647 i_sysioctl (i_sysioctl.U):
3648 This variable conditionally defines the I_SYS_IOCTL symbol, which
3649 indicates to the C program that <sys/ioctl.h> exists and should
3652 i_syslog (i_syslog.U):
3653 This variable conditionally defines the I_SYSLOG symbol,
3654 and indicates whether a C program should include <syslog.h>.
3656 i_sysmman (i_sysmman.U):
3657 This variable conditionally defines the I_SYS_MMAN symbol,
3658 and indicates whether a C program should include <sys/mman.h>.
3660 i_sysmode (i_sysmode.U):
3661 This variable conditionally defines the I_SYSMODE symbol,
3662 and indicates whether a C program should include <sys/mode.h>.
3664 i_sysmount (i_sysmount.U):
3665 This variable conditionally defines the I_SYSMOUNT symbol,
3666 and indicates whether a C program should include <sys/mount.h>.
3668 i_sysndir (i_sysndir.U):
3669 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
3670 whether a C program should include <sys/ndir.h>.
3672 i_sysparam (i_sysparam.U):
3673 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
3674 whether a C program should include <sys/param.h>.
3676 i_syspoll (i_syspoll.U):
3677 This variable conditionally defines the I_SYS_POLL symbol, which
3678 indicates to the C program that it should include <sys/poll.h>.
3680 i_sysresrc (i_sysresrc.U):
3681 This variable conditionally defines the I_SYS_RESOURCE symbol,
3682 and indicates whether a C program should include <sys/resource.h>.
3684 i_syssecrt (i_syssecrt.U):
3685 This variable conditionally defines the I_SYS_SECURITY symbol,
3686 and indicates whether a C program should include <sys/security.h>.
3688 i_sysselct (i_sysselct.U):
3689 This variable conditionally defines I_SYS_SELECT, which indicates
3690 to the C program that it should include <sys/select.h> in order to
3691 get the definition of struct timeval.
3693 i_syssockio (i_sysioctl.U):
3694 This variable conditionally defines I_SYS_SOCKIO to indicate to the
3695 C program that socket ioctl codes may be found in <sys/sockio.h>
3696 instead of <sys/ioctl.h>.
3698 i_sysstat (i_sysstat.U):
3699 This variable conditionally defines the I_SYS_STAT symbol,
3700 and indicates whether a C program should include <sys/stat.h>.
3702 i_sysstatfs (i_sysstatfs.U):
3703 This variable conditionally defines the I_SYSSTATFS symbol,
3704 and indicates whether a C program should include <sys/statfs.h>.
3706 i_sysstatvfs (i_sysstatvfs.U):
3707 This variable conditionally defines the I_SYSSTATVFS symbol,
3708 and indicates whether a C program should include <sys/statvfs.h>.
3710 i_systime (i_time.U):
3711 This variable conditionally defines I_SYS_TIME, which indicates
3712 to the C program that it should include <sys/time.h>.
3714 i_systimek (i_time.U):
3715 This variable conditionally defines I_SYS_TIME_KERNEL, which
3716 indicates to the C program that it should include <sys/time.h>
3717 with KERNEL defined.
3719 i_systimes (i_systimes.U):
3720 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
3721 whether a C program should include <sys/times.h>.
3723 i_systypes (i_systypes.U):
3724 This variable conditionally defines the I_SYS_TYPES symbol,
3725 and indicates whether a C program should include <sys/types.h>.
3727 i_sysuio (i_sysuio.U):
3728 This variable conditionally defines the I_SYSUIO symbol, and indicates
3729 whether a C program should include <sys/uio.h>.
3731 i_sysun (i_sysun.U):
3732 This variable conditionally defines I_SYS_UN, which indicates
3733 to the C program that it should include <sys/un.h> to get UNIX
3734 domain socket definitions.
3736 i_sysutsname (i_sysutsname.U):
3737 This variable conditionally defines the I_SYSUTSNAME symbol,
3738 and indicates whether a C program should include <sys/utsname.h>.
3740 i_sysvfs (i_sysvfs.U):
3741 This variable conditionally defines the I_SYSVFS symbol,
3742 and indicates whether a C program should include <sys/vfs.h>.
3744 i_syswait (i_syswait.U):
3745 This variable conditionally defines I_SYS_WAIT, which indicates
3746 to the C program that it should include <sys/wait.h>.
3748 i_termio (i_termio.U):
3749 This variable conditionally defines the I_TERMIO symbol, which
3750 indicates to the C program that it should include <termio.h> rather
3753 i_termios (i_termio.U):
3754 This variable conditionally defines the I_TERMIOS symbol, which
3755 indicates to the C program that the POSIX <termios.h> file is
3759 This variable unconditionally defines I_TIME, which indicates
3760 to the C program that it should include <time.h>.
3762 i_unistd (i_unistd.U):
3763 This variable conditionally defines the I_UNISTD symbol, and indicates
3764 whether a C program should include <unistd.h>.
3766 i_ustat (i_ustat.U):
3767 This variable conditionally defines the I_USTAT symbol, and indicates
3768 whether a C program should include <ustat.h>.
3770 i_utime (i_utime.U):
3771 This variable conditionally defines the I_UTIME symbol, and indicates
3772 whether a C program should include <utime.h>.
3774 i_vfork (i_vfork.U):
3775 This variable conditionally defines the I_VFORK symbol, and indicates
3776 whether a C program should include vfork.h.
3778 i_wchar (i_wchar.U):
3779 This variable conditionally defines the I_WCHAR symbol,
3780 that indicates whether a C program may include <wchar.h>.
3782 i_xlocale (d_newlocale.U):
3783 This symbol, if defined, indicates to the C program that it should
3784 include <xlocale.h> to get uselocale() and its friends
3786 ignore_versioned_solibs (libs.U):
3787 This variable should be non-empty if non-versioned shared
3788 libraries (libfoo.so.x.y) are to be ignored (because they
3789 cannot be linked against).
3791 inc_version_list (inc_version_list.U):
3792 This variable specifies the list of subdirectories in over
3793 which perl.c:incpush() and lib/lib.pm will automatically
3794 search when adding directories to @INC. The elements in
3795 the list are separated by spaces. This is only useful
3796 if you have a perl library directory tree structured like the
3797 default one. See INSTALL for how this works. The versioned
3798 site_perl directory was introduced in 5.005, so that is the
3799 lowest possible value.
3801 This list includes architecture-dependent directories back to
3802 version $api_versionstring (e.g. 5.5.640) and
3803 architecture-independent directories all the way back to
3806 inc_version_list_init (inc_version_list.U):
3807 This variable holds the same list as inc_version_list, but
3808 each item is enclosed in double quotes and separated by commas,
3809 suitable for use in the PERL_INC_VERSION_LIST initialization.
3812 This variable must precede the normal include path to get the
3813 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3814 Value can be "" or "/bsd43" on mips.
3817 This variable must precede the normal include path to get the
3818 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3819 Value can be "" or "/bsd43" on mips.
3822 This variable is defined but not used by Configure.
3823 The value is the empty string and is not useful.
3825 initialinstalllocation (bin.U):
3826 When userelocatableinc is true, this variable holds the location
3827 that make install should copy the perl binary to, with all the
3828 run-time relocatable paths calculated from this at install time.
3829 When used, it is initialized to the original value of binexp, and
3830 then binexp is set to '.../', as the other binaries are found
3831 relative to the perl binary.
3833 installarchlib (archlib.U):
3834 This variable is really the same as archlibexp but may differ on
3835 those systems using AFS. For extra portability, only this variable
3836 should be used in makefiles.
3839 This variable is the same as binexp unless AFS is running in which case
3840 the user is explicitly prompted for it. This variable should always
3841 be used in your makefiles for maximum portability.
3843 installhtml1dir (html1dir.U):
3844 This variable is really the same as html1direxp, unless you are
3845 using a different installprefix. For extra portability, you
3846 should only use this variable within your makefiles.
3848 installhtml3dir (html3dir.U):
3849 This variable is really the same as html3direxp, unless you are
3850 using a different installprefix. For extra portability, you
3851 should only use this variable within your makefiles.
3853 installman1dir (man1dir.U):
3854 This variable is really the same as man1direxp, unless you are using
3855 AFS in which case it points to the read/write location whereas
3856 man1direxp only points to the read-only access location. For extra
3857 portability, you should only use this variable within your makefiles.
3859 installman3dir (man3dir.U):
3860 This variable is really the same as man3direxp, unless you are using
3861 AFS in which case it points to the read/write location whereas
3862 man3direxp only points to the read-only access location. For extra
3863 portability, you should only use this variable within your makefiles.
3865 installprefix (installprefix.U):
3866 This variable holds the name of the directory below which
3867 "make install" will install the package. For most users, this
3868 is the same as prefix. However, it is useful for
3869 installing the software into a different (usually temporary)
3870 location after which it can be bundled up and moved somehow
3871 to the final location specified by prefix.
3873 installprefixexp (installprefix.U):
3874 This variable holds the full absolute path of installprefix
3875 with all ~-expansion done.
3877 installprivlib (privlib.U):
3878 This variable is really the same as privlibexp but may differ on
3879 those systems using AFS. For extra portability, only this variable
3880 should be used in makefiles.
3882 installscript (scriptdir.U):
3883 This variable is usually the same as scriptdirexp, unless you are on
3884 a system running AFS, in which case they may differ slightly. You
3885 should always use this variable within your makefiles for portability.
3887 installsitearch (sitearch.U):
3888 This variable is really the same as sitearchexp but may differ on
3889 those systems using AFS. For extra portability, only this variable
3890 should be used in makefiles.
3892 installsitebin (sitebin.U):
3893 This variable is usually the same as sitebinexp, unless you are on
3894 a system running AFS, in which case they may differ slightly. You
3895 should always use this variable within your makefiles for portability.
3897 installsitehtml1dir (sitehtml1dir.U):
3898 This variable is really the same as sitehtml1direxp, unless you are using
3899 AFS in which case it points to the read/write location whereas
3900 html1direxp only points to the read-only access location. For extra
3901 portability, you should only use this variable within your makefiles.
3903 installsitehtml3dir (sitehtml3dir.U):
3904 This variable is really the same as sitehtml3direxp, unless you are using
3905 AFS in which case it points to the read/write location whereas
3906 html3direxp only points to the read-only access location. For extra
3907 portability, you should only use this variable within your makefiles.
3909 installsitelib (sitelib.U):
3910 This variable is really the same as sitelibexp but may differ on
3911 those systems using AFS. For extra portability, only this variable
3912 should be used in makefiles.
3914 installsiteman1dir (siteman1dir.U):
3915 This variable is really the same as siteman1direxp, unless you are using
3916 AFS in which case it points to the read/write location whereas
3917 man1direxp only points to the read-only access location. For extra
3918 portability, you should only use this variable within your makefiles.
3920 installsiteman3dir (siteman3dir.U):
3921 This variable is really the same as siteman3direxp, unless you are using
3922 AFS in which case it points to the read/write location whereas
3923 man3direxp only points to the read-only access location. For extra
3924 portability, you should only use this variable within your makefiles.
3926 installsitescript (sitescript.U):
3927 This variable is usually the same as sitescriptexp, unless you are on
3928 a system running AFS, in which case they may differ slightly. You
3929 should always use this variable within your makefiles for portability.
3931 installstyle (installstyle.U):
3932 This variable describes the "style" of the perl installation.
3933 This is intended to be useful for tools that need to
3934 manipulate entire perl distributions. Perl itself doesn't use
3935 this to find its libraries -- the library directories are
3936 stored directly in Config.pm. Currently, there are only two
3937 styles: "lib" and "lib/perl5". The default library locations
3938 (e.g. privlib, sitelib) are either $prefix/lib or
3939 $prefix/lib/perl5. The former is useful if $prefix is a
3940 directory dedicated to perl (e.g. /opt/perl), while the latter
3941 is useful if $prefix is shared by many packages, e.g. if
3944 Unfortunately, while this "style" variable is used to set
3945 defaults for all three directory hierarchies (core, vendor, and
3946 site), there is no guarantee that the same style is actually
3947 appropriate for all those directories. For example, $prefix
3948 might be /opt/perl, but $siteprefix might be /usr/local.
3949 (Perhaps, in retrospect, the "lib" style should never have been
3950 supported, but it did seem like a nice idea at the time.)
3952 The situation is even less clear for tools such as MakeMaker
3953 that can be used to install additional modules into
3954 non-standard places. For example, if a user intends to install
3955 a module into a private directory (perhaps by setting PREFIX on
3956 the Makefile.PL command line), then there is no reason to
3957 assume that the Configure-time $installstyle setting will be
3958 relevant for that PREFIX.
3960 This may later be extended to include other information, so
3961 be careful with pattern-matching on the results.
3963 For compatibility with perl5.005 and earlier, the default
3964 setting is based on whether or not $prefix contains the string
3967 installusrbinperl (instubperl.U):
3968 This variable tells whether Perl should be installed also as
3969 /usr/bin/perl in addition to
3972 installvendorarch (vendorarch.U):
3973 This variable is really the same as vendorarchexp but may differ on
3974 those systems using AFS. For extra portability, only this variable
3975 should be used in makefiles.
3977 installvendorbin (vendorbin.U):
3978 This variable is really the same as vendorbinexp but may differ on
3979 those systems using AFS. For extra portability, only this variable
3980 should be used in makefiles.
3982 installvendorhtml1dir (vendorhtml1dir.U):
3983 This variable is really the same as vendorhtml1direxp but may differ on
3984 those systems using AFS. For extra portability, only this variable
3985 should be used in makefiles.
3987 installvendorhtml3dir (vendorhtml3dir.U):
3988 This variable is really the same as vendorhtml3direxp but may differ on
3989 those systems using AFS. For extra portability, only this variable
3990 should be used in makefiles.
3992 installvendorlib (vendorlib.U):
3993 This variable is really the same as vendorlibexp but may differ on
3994 those systems using AFS. For extra portability, only this variable
3995 should be used in makefiles.
3997 installvendorman1dir (vendorman1dir.U):
3998 This variable is really the same as vendorman1direxp but may differ on
3999 those systems using AFS. For extra portability, only this variable
4000 should be used in makefiles.
4002 installvendorman3dir (vendorman3dir.U):
4003 This variable is really the same as vendorman3direxp but may differ on
4004 those systems using AFS. For extra portability, only this variable
4005 should be used in makefiles.
4007 installvendorscript (vendorscript.U):
4008 This variable is really the same as vendorscriptexp but may differ on
4009 those systems using AFS. For extra portability, only this variable
4010 should be used in makefiles.
4012 intsize (intsize.U):
4013 This variable contains the value of the INTSIZE symbol, which
4014 indicates to the C program how many bytes there are in an int.
4016 issymlink (issymlink.U):
4017 This variable holds the test command to test for a symbolic link
4018 (if they are supported). Typical values include 'test -h' and
4021 ivdformat (perlxvf.U):
4022 This variable contains the format string used for printing
4023 a Perl IV as a signed decimal integer.
4026 This variable is the size of an IV in bytes.
4029 This variable contains the C type used for Perl's IV.
4031 known_extensions (Extensions.U):
4032 This variable holds a list of all extensions (both XS and non-xs)
4033 included in the package source distribution. This information is
4034 only really of use during the Perl build, as the list makes no
4035 distinction between extensions which were build and installed, and
4036 those which where not. See "extensions" for the list of extensions
4037 actually built and available.
4040 This variable is defined but not used by Configure.
4041 The value is the empty string and is not useful.
4044 This variable indicates the program to be used to link
4045 libraries for dynamic loading. On some systems, it is 'ld'.
4046 On ELF systems, it should be $cc. Mostly, we'll try to respect
4047 the hint file setting.
4049 ld_can_script (dlsrc.U):
4050 This variable shows if the loader accepts scripts in the form of
4051 -Wl,--version-script=ld.script. This is currently only supported
4052 for GNU ld on ELF in dynamic loading builds.
4054 lddlflags (dlsrc.U):
4055 This variable contains any special flags that might need to be
4056 passed to $ld to create a shared library suitable for dynamic
4057 loading. It is up to the makefile to use it. For hpux, it
4058 should be '-b'. For sunos 4.1, it is empty.
4060 ldflags (ccflags.U):
4061 This variable contains any additional C loader flags desired by
4062 the user. It is up to the Makefile to use this.
4064 ldflags_uselargefiles (uselfs.U):
4065 This variable contains the loader flags needed by large file builds
4066 and added to ldflags by hints files.
4068 ldlibpthname (libperl.U):
4069 This variable holds the name of the shared library
4070 search path, often LD_LIBRARY_PATH. To get an empty
4071 string, the hints file must set this to 'none'.
4074 This variable is used internally by Configure to determine the
4075 full pathname (if any) of the less program. After Configure runs,
4076 the value is reset to a plain "less" and is not useful.
4079 This is an old synonym for _a.
4082 This variable contains the location of the C library.
4084 libperl (libperl.U):
4085 The perl executable is obtained by linking perlmain.c with
4086 libperl, any static extensions (usually just DynaLoader),
4087 and any other libraries needed on this system. libperl
4088 is usually libperl.a, but can also be libperl.so.xxx if
4089 the user wishes to build a perl executable with a shared
4093 This variable holds the general path (space-separated) used to find
4094 libraries. It is intended to be used by other units.
4097 This variable holds the additional libraries we want to use.
4098 It is up to the Makefile to deal with it. The list can be empty.
4101 This variable holds the directory names aka dirnames of the libraries
4102 we found and accepted, duplicates are removed.
4105 This variable holds the filenames aka basenames of the libraries
4106 we found and accepted.
4109 This variable holds the full pathnames of the libraries
4110 we found and accepted.
4113 This variable holds the directory names probed for libraries.
4115 libswanted (Myinit.U):
4116 This variable holds a list of all the libraries we want to
4117 search. The order is chosen to pick up the c library
4118 ahead of ucb or bsd libraries for SVR4.
4120 libswanted_uselargefiles (uselfs.U):
4121 This variable contains the libraries needed by large file builds
4122 and added to ldflags by hints files. It is a space separated list
4123 of the library names without the "lib" prefix or any suffix, just
4127 This variable is defined but not used by Configure.
4128 The value is the empty string and is not useful.
4131 This variable is defined but not used by Configure.
4132 The value is the empty string and is not useful.
4134 lkflags (ccflags.U):
4135 This variable contains any additional C partial linker flags desired by
4136 the user. It is up to the Makefile to use this.
4139 This variable is used internally by Configure to determine the
4140 full pathname (if any) of the ln program. After Configure runs,
4141 the value is reset to a plain "ln" and is not useful.
4144 This variable holds the name of the command to make
4145 symbolic links (if they are supported). It can be used
4146 in the Makefile. It is either 'ln -s' or 'ln'
4148 localtime_r_proto (d_localtime_r.U):
4149 This variable encodes the prototype of localtime_r.
4150 It is zero if d_localtime_r is undef, and one of the
4151 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
4154 locincpth (ccflags.U):
4155 This variable contains a list of additional directories to be
4156 searched by the compiler. The appropriate '-I' directives will
4157 be added to ccflags. This is intended to simplify setting
4158 local directories from the Configure command line.
4159 It's not much, but it parallels the loclibpth stuff in libpth.U.
4161 loclibpth (libpth.U):
4162 This variable holds the paths (space-separated) used to find local
4163 libraries. It is prepended to libpth, and is intended to be easily
4164 set from the command line.
4166 longdblinfbytes (infnan.U):
4167 This variable contains comma-separated list of hexadecimal bytes
4168 for the long double precision infinity.
4170 longdblkind (d_longdbl.U):
4171 This variable, if defined, encodes the type of a long double:
4173 1 = IEEE 754 128-bit little endian,
4174 2 = IEEE 754 128-bit big endian,
4175 3 = x86 80-bit little endian,
4176 4 = x86 80-bit big endian,
4177 5 = double-double 128-bit little endian,
4178 6 = double-double 128-bit big endian,
4179 7 = 128-bit mixed-endian double-double (64-bit LEs in BE),
4180 8 = 128-bit mixed-endian double-double (64-bit BEs in LE),
4181 9 = 128-bit PDP-style mixed-endian long doubles,
4182 -1 = unknown format.
4184 longdblmantbits (mantbits.U):
4185 This symbol, if defined, tells how many mantissa bits
4186 there are in long double precision floating point format.
4187 Note that this can be LDBL_MANT_DIG minus one,
4188 since LDBL_MANT_DIG can include the IEEE 754 implicit bit.
4189 The common x86-style 80-bit long double does not have
4192 longdblnanbytes (infnan.U):
4193 This variable contains comma-separated list of hexadecimal bytes
4194 for the long double precision not-a-number.
4196 longdblsize (d_longdbl.U):
4197 This variable contains the value of the LONG_DOUBLESIZE symbol, which
4198 indicates to the C program how many bytes there are in a long double,
4199 if this system supports long doubles. Note that this is
4200 sizeof(long double), which may include unused bytes.
4202 longlongsize (d_longlong.U):
4203 This variable contains the value of the LONGLONGSIZE symbol, which
4204 indicates to the C program how many bytes there are in a long long,
4205 if this system supports long long.
4207 longsize (intsize.U):
4208 This variable contains the value of the LONGSIZE symbol, which
4209 indicates to the C program how many bytes there are in a long.
4212 This variable is defined but not used by Configure.
4213 The value is the empty string and is not useful.
4216 This variable is defined but not used by Configure.
4217 The value is the empty string and is not useful.
4220 This variable is used internally by Configure to determine the
4221 full pathname (if any) of the ls program. After Configure runs,
4222 the value is reset to a plain "ls" and is not useful.
4224 lseeksize (lseektype.U):
4225 This variable defines lseektype to be something like off_t, long,
4226 or whatever type is used to declare lseek offset's type in the
4227 kernel (which also appears to be lseek's return type).
4229 lseektype (lseektype.U):
4230 This variable defines lseektype to be something like off_t, long,
4231 or whatever type is used to declare lseek offset's type in the
4232 kernel (which also appears to be lseek's return type).
4235 This variable is defined but not used by Configure.
4236 The value is the empty string and is not useful.
4239 This variable is defined but not used by Configure.
4240 The value is the empty string and is not useful.
4243 This variable is used internally by Configure to determine the
4244 full pathname (if any) of the make program. After Configure runs,
4245 the value is reset to a plain "make" and is not useful.
4247 make_set_make (make.U):
4248 Some versions of 'make' set the variable MAKE. Others do not.
4249 This variable contains the string to be included in Makefile.SH
4250 so that MAKE is set if needed, and not if not needed.
4251 Possible values are:
4253 make_set_make='#' # If your make program handles this for you,
4255 make_set_make="MAKE=$make" # if it doesn't.
4257 This uses a comment character so that we can distinguish a
4258 'set' value (from a previous config.sh or Configure '-D' option)
4259 from an uncomputed value.
4261 mallocobj (mallocsrc.U):
4262 This variable contains the name of the malloc.o that this package
4263 generates, if that malloc.o is preferred over the system malloc.
4264 Otherwise the value is null. This variable is intended for generating
4265 Makefiles. See mallocsrc.
4267 mallocsrc (mallocsrc.U):
4268 This variable contains the name of the malloc.c that comes with
4269 the package, if that malloc.c is preferred over the system malloc.
4270 Otherwise the value is null. This variable is intended for generating
4273 malloctype (mallocsrc.U):
4274 This variable contains the kind of ptr returned by malloc and realloc.
4276 man1dir (man1dir.U):
4277 This variable contains the name of the directory in which manual
4278 source pages are to be put. It is the responsibility of the
4279 Makefile.SH to get the value of this into the proper command.
4280 You must be prepared to do the ~name expansion yourself.
4282 man1direxp (man1dir.U):
4283 This variable is the same as the man1dir variable, but is filename
4284 expanded at configuration time, for convenient use in makefiles.
4286 man1ext (man1dir.U):
4287 This variable contains the extension that the manual page should
4288 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
4291 man3dir (man3dir.U):
4292 This variable contains the name of the directory in which manual
4293 source pages are to be put. It is the responsibility of the
4294 Makefile.SH to get the value of this into the proper command.
4295 You must be prepared to do the ~name expansion yourself.
4297 man3direxp (man3dir.U):
4298 This variable is the same as the man3dir variable, but is filename
4299 expanded at configuration time, for convenient use in makefiles.
4301 man3ext (man3dir.U):
4302 This variable contains the extension that the manual page should
4303 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
4306 mips_type (usrinc.U):
4307 This variable holds the environment type for the mips system.
4308 Possible values are "BSD 4.3" and "System V".
4310 mistrustnm (Csym.U):
4311 This variable can be used to establish a fallthrough for the cases
4312 where nm fails to find a symbol. If usenm is false or usenm is true
4313 and mistrustnm is false, this variable has no effect. If usenm is true
4314 and mistrustnm is "compile", a test program will be compiled to try to
4315 find any symbol that can't be located via nm lookup. If mistrustnm is
4316 "run", the test program will be run as well as being compiled.
4319 This variable is used internally by Configure to determine the
4320 full pathname (if any) of the mkdir program. After Configure runs,
4321 the value is reset to a plain "mkdir" and is not useful.
4323 mmaptype (d_mmap.U):
4324 This symbol contains the type of pointer returned by mmap()
4325 (and simultaneously the type of the first argument).
4326 It can be 'void *' or 'caddr_t'.
4328 modetype (modetype.U):
4329 This variable defines modetype to be something like mode_t,
4330 int, unsigned short, or whatever type is used to declare file
4331 modes for system calls.
4334 This variable is used internally by Configure to determine the
4335 full pathname (if any) of the more program. After Configure runs,
4336 the value is reset to a plain "more" and is not useful.
4338 multiarch (multiarch.U):
4339 This variable conditionally defines the MULTIARCH symbol
4340 which signifies the presence of multiplatform files.
4341 This is normally set by hints files.
4344 This variable is defined but not used by Configure.
4345 The value is the empty string and is not useful.
4347 myarchname (archname.U):
4348 This variable holds the architecture name computed by Configure in
4349 a previous run. It is not intended to be perused by any user and
4350 should never be set in a hint file.
4352 mydomain (myhostname.U):
4353 This variable contains the eventual value of the MYDOMAIN symbol,
4354 which is the domain of the host the program is going to run on.
4355 The domain must be appended to myhostname to form a complete host name.
4356 The dot comes with mydomain, and need not be supplied by the program.
4358 myhostname (myhostname.U):
4359 This variable contains the eventual value of the MYHOSTNAME symbol,
4360 which is the name of the host the program is going to run on.
4361 The domain is not kept with hostname, but must be gotten from mydomain.
4362 The dot comes with mydomain, and need not be supplied by the program.
4364 myuname (Oldconfig.U):
4365 The output of 'uname -a' if available, otherwise the hostname.
4366 The whole thing is then lower-cased and slashes and single quotes are
4370 This variable contains the '-n' flag if that is what causes the echo
4371 command to suppress newline. Otherwise it is null. Correct usage is
4372 $echo $n "prompt for a question: $c".
4374 need_va_copy (need_va_copy.U):
4375 This symbol, if defined, indicates that the system stores
4376 the variable argument list datatype, va_list, in a format
4377 that cannot be copied by simple assignment, so that some
4378 other means must be used when copying is required.
4379 As such systems vary in their provision (or non-provision)
4380 of copying mechanisms, handy.h defines a platform-
4381 independent macro, Perl_va_copy(src, dst), to do the job.
4383 netdb_hlen_type (netdbtype.U):
4384 This variable holds the type used for the 2nd argument to
4385 gethostbyaddr(). Usually, this is int or size_t or unsigned.
4386 This is only useful if you have gethostbyaddr(), naturally.
4388 netdb_host_type (netdbtype.U):
4389 This variable holds the type used for the 1st argument to
4390 gethostbyaddr(). Usually, this is char * or void *, possibly
4391 with or without a const prefix.
4392 This is only useful if you have gethostbyaddr(), naturally.
4394 netdb_name_type (netdbtype.U):
4395 This variable holds the type used for the argument to
4396 gethostbyname(). Usually, this is char * or const char *.
4397 This is only useful if you have gethostbyname(), naturally.
4399 netdb_net_type (netdbtype.U):
4400 This variable holds the type used for the 1st argument to
4401 getnetbyaddr(). Usually, this is int or long.
4402 This is only useful if you have getnetbyaddr(), naturally.
4405 This variable is used internally by Configure to determine the
4406 full pathname (if any) of the nm program. After Configure runs,
4407 the value is reset to a plain "nm" and is not useful.
4410 This variable holds the options that may be necessary for nm.
4412 nm_so_opt (usenm.U):
4413 This variable holds the options that may be necessary for nm
4414 to work on a shared library but that can not be used on an
4415 archive library. Currently, this is only used by Linux, where
4416 nm --dynamic is *required* to get symbols from an ELF library which
4417 has been stripped, but nm --dynamic is *fatal* on an archive library.
4418 Maybe Linux should just always set usenm=false.
4420 nonxs_ext (Extensions.U):
4421 This variable holds a list of all non-xs extensions built and
4422 installed by the package. By default, all non-xs extensions
4423 distributed will be built, with the exception of platform-specific
4424 extensions (currently only one VMS specific extension).
4427 This variable is used internally by Configure to determine the
4428 full pathname (if any) of the nroff program. After Configure runs,
4429 the value is reset to a plain "nroff" and is not useful.
4431 nv_overflows_integers_at (perlxv.U):
4432 This variable gives the largest integer value that NVs can hold
4433 as a constant floating point expression.
4434 If it could not be determined, it holds the value 0.
4436 nv_preserves_uv_bits (perlxv.U):
4437 This variable indicates how many of bits type uvtype
4438 a variable nvtype can preserve.
4440 nveformat (perlxvf.U):
4441 This variable contains the format string used for printing
4442 a Perl NV using %e-ish floating point format.
4444 nvEUformat (perlxvf.U):
4445 This variable contains the format string used for printing
4446 a Perl NV using %E-ish floating point format.
4448 nvfformat (perlxvf.U):
4449 This variable contains the format string used for printing
4450 a Perl NV using %f-ish floating point format.
4452 nvFUformat (perlxvf.U):
4453 This variable contains the format string used for printing
4454 a Perl NV using %F-ish floating point format.
4456 nvgformat (perlxvf.U):
4457 This variable contains the format string used for printing
4458 a Perl NV using %g-ish floating point format.
4460 nvGUformat (perlxvf.U):
4461 This variable contains the format string used for printing
4462 a Perl NV using %G-ish floating point format.
4464 nvmantbits (mantbits.U):
4465 This variable tells how many bits the mantissa of a Perl NV has,
4466 not including the possible implicit bit.
4469 This variable is the size of a Perl NV in bytes.
4470 Note that some floating point formats have unused bytes.
4473 This variable contains the C type used for Perl's NV.
4475 o_nonblock (nblock_io.U):
4476 This variable bears the symbol value to be used during open() or fcntl()
4477 to turn on non-blocking I/O for a file descriptor. If you wish to switch
4478 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
4479 but that is only supported by some devices.
4482 This is an old synonym for _o.
4484 old_pthread_create_joinable (d_pthrattrj.U):
4485 This variable defines the constant to use for creating joinable
4486 (aka undetached) pthreads. Unused if pthread.h defines
4487 PTHREAD_CREATE_JOINABLE. If used, possible values are
4488 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
4490 optimize (ccflags.U):
4491 This variable contains any optimizer/debugger flag that should be used.
4492 It is up to the Makefile to use it.
4494 orderlib (orderlib.U):
4495 This variable is "true" if the components of libraries must be ordered
4496 (with `lorder $* | tsort`) before placing them in an archive. Set to
4497 "false" if ranlib or ar can generate random libraries.
4499 osname (Oldconfig.U):
4500 This variable contains the operating system name (e.g. sunos,
4501 solaris, hpux, etc.). It can be useful later on for setting
4502 defaults. Any spaces are replaced with underscores. It is set
4503 to a null string if we can't figure it out.
4505 osvers (Oldconfig.U):
4506 This variable contains the operating system version (e.g.
4507 4.1.3, 5.2, etc.). It is primarily used for helping select
4508 an appropriate hints file, but might be useful elsewhere for
4509 setting defaults. It is set to '' if we can't figure it out.
4510 We try to be flexible about how much of the version number
4511 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
4512 same for this package, hints files might just be os_4.0 or
4513 os_4.1, etc., not keeping separate files for each little release.
4515 otherlibdirs (otherlibdirs.U):
4516 This variable contains a colon-separated set of paths for the perl
4517 binary to search for additional library files or modules.
4518 These directories will be tacked to the end of @INC.
4519 Perl will automatically search below each path for version-
4520 and architecture-specific directories. See inc_version_list
4522 A value of ' ' means 'none' and is used to preserve this value
4523 for the next run through Configure.
4525 package (package.U):
4526 This variable contains the name of the package being constructed.
4527 It is primarily intended for the use of later Configure units.
4530 This variable contains the name of the preferred pager on the system.
4531 Usual values are (the full pathnames of) more, less, pg, or cat.
4534 This variable contains a command that produces the text of the
4535 /etc/passwd file. This is normally "cat /etc/passwd", but can be
4536 "ypcat passwd" when NIS is used.
4537 On some systems, such as os390, there may be no equivalent
4538 command, in which case this variable is unset.
4540 patchlevel (patchlevel.U):
4541 The patchlevel level of this package.
4542 The value of patchlevel comes from the patchlevel.h file.
4543 In a version number such as 5.6.1, this is the "6".
4544 In patchlevel.h, this is referred to as "PERL_VERSION".
4547 This is an old synonym for p_ in Head.U, the character
4548 used to separate elements in the command shell search PATH.
4551 This variable is used internally by Configure to determine the
4552 full pathname (if any) of the perl program. After Configure runs,
4553 the value is reset to a plain "perl" and is not useful.
4556 This variable contains the full path (if any) to a previously
4557 installed perl5.005 or later suitable for running the script
4558 to determine inc_version_list.
4560 PERL_API_REVISION (patchlevel.h):
4561 This number describes the earliest compatible PERL_REVISION of
4562 Perl ("compatibility" here being defined as sufficient binary/API
4563 compatibility to run XS code built with the older version).
4564 Normally this does not change across maintenance releases.
4565 Please read the comment in patchlevel.h.
4567 PERL_API_SUBVERSION (patchlevel.h):
4568 This number describes the earliest compatible PERL_SUBVERSION of
4569 Perl ("compatibility" here being defined as sufficient binary/API
4570 compatibility to run XS code built with the older version).
4571 Normally this does not change across maintenance releases.
4572 Please read the comment in patchlevel.h.
4574 PERL_API_VERSION (patchlevel.h):
4575 This number describes the earliest compatible PERL_VERSION of
4576 Perl ("compatibility" here being defined as sufficient binary/API
4577 compatibility to run XS code built with the older version).
4578 Normally this does not change across maintenance releases.
4579 Please read the comment in patchlevel.h.
4581 PERL_CONFIG_SH (Oldsyms.U):
4582 This is set to 'true' in config.sh so that a shell script
4583 sourcing config.sh can tell if it has been sourced already.
4585 PERL_PATCHLEVEL (Oldsyms.U):
4586 This symbol reflects the patchlevel, if available. Will usually
4587 come from the .patch file, which is available when the perl
4588 source tree was fetched with rsync.
4590 perl_patchlevel (patchlevel.U):
4591 This is the Perl patch level, a numeric change identifier,
4592 as defined by whichever source code maintenance system
4593 is used to maintain the patches; currently Perforce.
4594 It does not correlate with the Perl version numbers or
4595 the maintenance versus development dichotomy except
4596 by also being increasing.
4598 PERL_REVISION (Oldsyms.U):
4599 In a Perl version number such as 5.6.2, this is the 5.
4600 This value is manually set in patchlevel.h
4602 perl_static_inline (d_static_inline.U):
4603 This variable defines the PERL_STATIC_INLINE symbol to
4604 the best-guess incantation to use for static inline functions.
4605 Possibilities include
4607 static __inline__ (gcc -ansi)
4608 static __inline (MSVC)
4609 static _inline (older MSVC)
4610 static (c89 compilers)
4612 PERL_SUBVERSION (Oldsyms.U):
4613 In a Perl version number such as 5.6.2, this is the 2.
4614 Values greater than 50 represent potentially unstable
4615 development subversions.
4616 This value is manually set in patchlevel.h
4618 PERL_VERSION (Oldsyms.U):
4619 In a Perl version number such as 5.6.2, this is the 6.
4620 This value is manually set in patchlevel.h
4622 perladmin (perladmin.U):
4623 Electronic mail address of the perl5 administrator.
4626 The list of libraries needed by Perl only (any libraries needed
4627 by extensions only will by dropped, if using dynamic loading).
4629 perlpath (perlpath.U):
4630 This variable contains the eventual value of the PERLPATH symbol,
4631 which contains the name of the perl interpreter to be used in
4632 shell scripts and in the "eval 'exec'" idiom. This variable is
4633 not necessarily the pathname of the file containing the perl
4634 interpreter; you must append the executable extension (_exe) if
4635 it is not already present. Note that Perl code that runs during
4636 the Perl build process cannot reference this variable, as Perl
4637 may not have been installed, or even if installed, may be a
4638 different version of Perl.
4641 This variable is used internally by Configure to determine the
4642 full pathname (if any) of the pg program. After Configure runs,
4643 the value is reset to a plain "pg" and is not useful.
4645 phostname (myhostname.U):
4646 This variable contains the eventual value of the PHOSTNAME symbol,
4647 which is a command that can be fed to popen() to get the host name.
4648 The program should probably not presume that the domain is or isn't
4651 pidtype (pidtype.U):
4652 This variable defines PIDTYPE to be something like pid_t, int,
4653 ushort, or whatever type is used to declare process ids in the kernel.
4656 Holds the private path used by Configure to find out the libraries.
4657 Its value is prepend to libpth. This variable takes care of special
4658 machines, like the mips. Usually, it should be empty.
4661 This variable is defined but not used by Configure.
4662 The value is the empty string and is not useful.
4665 This variable is defined but not used by Configure.
4666 The value is the empty string and is not useful.
4669 This variable holds the name of the directory below which the
4670 user will install the package. Usually, this is /usr/local, and
4671 executables go in /usr/local/bin, library stuff in /usr/local/lib,
4672 man pages in /usr/local/man, etc. It is only used to set defaults
4673 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
4675 prefixexp (prefix.U):
4676 This variable holds the full absolute path of the directory below
4677 which the user will install the package. Derived from prefix.
4679 privlib (privlib.U):
4680 This variable contains the eventual value of the PRIVLIB symbol,
4681 which is the name of the private library for this package. It may
4682 have a ~ on the front. It is up to the makefile to eventually create
4683 this directory while performing installation (with ~ substitution).
4685 privlibexp (privlib.U):
4686 This variable is the ~name expanded version of privlib, so that you
4687 may use it directly in Makefiles or shell scripts.
4689 procselfexe (d_procselfexe.U):
4690 If d_procselfexe is defined, $procselfexe is the filename
4691 of the symbolic link pointing to the absolute pathname of
4692 the executing program.
4694 ptrsize (ptrsize.U):
4695 This variable contains the value of the PTRSIZE symbol, which
4696 indicates to the C program how many bytes there are in a pointer.
4698 quadkind (quadtype.U):
4699 This variable, if defined, encodes the type of a quad:
4700 1 = int, 2 = long, 3 = long long, 4 = int64_t.
4702 quadtype (quadtype.U):
4703 This variable defines Quad_t to be something like long, int,
4704 long long, int64_t, or whatever type is used for 64-bit integers.
4706 randbits (randfunc.U):
4707 Indicates how many bits are produced by the function used to
4708 generate normalized random numbers.
4710 randfunc (randfunc.U):
4711 Indicates the name of the random number function to use.
4712 Values include drand48, random, and rand. In C programs,
4713 the 'Drand01' macro is defined to generate uniformly distributed
4714 random numbers over the range [0., 1.[ (see drand01 and nrand).
4716 random_r_proto (d_random_r.U):
4717 This variable encodes the prototype of random_r.
4718 It is zero if d_random_r is undef, and one of the
4719 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
4722 randseedtype (randfunc.U):
4723 Indicates the type of the argument of the seedfunc.
4725 ranlib (orderlib.U):
4726 This variable is set to the pathname of the ranlib program, if it is
4727 needed to generate random libraries. Set to ":" if ar can generate
4728 random libraries or if random libraries are not supported
4730 rd_nodata (nblock_io.U):
4731 This variable holds the return code from read() when no data is
4732 present. It should be -1, but some systems return 0 when O_NDELAY is
4733 used, which is a shame because you cannot make the difference between
4734 no data and an EOF.. Sigh!
4736 readdir64_r_proto (d_readdir64_r.U):
4737 This variable encodes the prototype of readdir64_r.
4738 It is zero if d_readdir64_r is undef, and one of the
4739 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
4742 readdir_r_proto (d_readdir_r.U):
4743 This variable encodes the prototype of readdir_r.
4744 It is zero if d_readdir_r is undef, and one of the
4745 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
4748 revision (patchlevel.U):
4749 The value of revision comes from the patchlevel.h file.
4750 In a version number such as 5.6.1, this is the "5".
4751 In patchlevel.h, this is referred to as "PERL_REVISION".
4754 This variable is used internally by Configure to determine the
4755 full pathname (if any) of the rm program. After Configure runs,
4756 the value is reset to a plain "rm" and is not useful.
4759 This is a cleanup variable for try test programs.
4760 Internal Configure use only.
4763 This variable is defined but not used by Configure.
4764 The value is the empty string and is not useful.
4767 This variable contains the command used by Configure
4768 to copy and execute a cross-compiled executable in the
4769 target host. Useful and available only during Perl build.
4770 Empty string '' if not cross-compiling.
4773 This variable contains 'true' or 'false' depending whether the
4774 nm extraction should be performed or not, according to the value
4775 of usenm and the flags on the Configure command line.
4777 sched_yield (d_pthread_y.U):
4778 This variable defines the way to yield the execution
4779 of the current thread.
4781 scriptdir (scriptdir.U):
4782 This variable holds the name of the directory in which the user wants
4783 to put publicly scripts for the package in question. It is either
4784 the same directory as for binaries, or a special one that can be
4785 mounted across different architectures, like /usr/share. Programs
4786 must be prepared to deal with ~name expansion.
4788 scriptdirexp (scriptdir.U):
4789 This variable is the same as scriptdir, but is filename expanded
4790 at configuration time, for programs not wanting to bother with it.
4793 This variable is used internally by Configure to determine the
4794 full pathname (if any) of the sed program. After Configure runs,
4795 the value is reset to a plain "sed" and is not useful.
4797 seedfunc (randfunc.U):
4798 Indicates the random number generating seed function.
4799 Values include srand48, srandom, and srand.
4801 selectminbits (selectminbits.U):
4802 This variable holds the minimum number of bits operated by select.
4803 That is, if you do select(n, ...), how many bits at least will be
4804 cleared in the masks if some activity is detected. Usually this
4805 is either n or 32*ceil(n/32), especially many little-endians do
4806 the latter. This is only useful if you have select(), naturally.
4808 selecttype (selecttype.U):
4809 This variable holds the type used for the 2nd, 3rd, and 4th
4810 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4811 is defined, and 'int *' otherwise. This is only useful if you
4812 have select(), naturally.
4815 This variable is defined but not used by Configure.
4816 The value is the empty string and is not useful.
4818 setgrent_r_proto (d_setgrent_r.U):
4819 This variable encodes the prototype of setgrent_r.
4820 It is zero if d_setgrent_r is undef, and one of the
4821 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4824 sethostent_r_proto (d_sethostent_r.U):
4825 This variable encodes the prototype of sethostent_r.
4826 It is zero if d_sethostent_r is undef, and one of the
4827 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4830 setlocale_r_proto (d_setlocale_r.U):
4831 This variable encodes the prototype of setlocale_r.
4832 It is zero if d_setlocale_r is undef, and one of the
4833 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4836 setnetent_r_proto (d_setnetent_r.U):
4837 This variable encodes the prototype of setnetent_r.
4838 It is zero if d_setnetent_r is undef, and one of the
4839 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4842 setprotoent_r_proto (d_setprotoent_r.U):
4843 This variable encodes the prototype of setprotoent_r.
4844 It is zero if d_setprotoent_r is undef, and one of the
4845 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4848 setpwent_r_proto (d_setpwent_r.U):
4849 This variable encodes the prototype of setpwent_r.
4850 It is zero if d_setpwent_r is undef, and one of the
4851 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4854 setservent_r_proto (d_setservent_r.U):
4855 This variable encodes the prototype of setservent_r.
4856 It is zero if d_setservent_r is undef, and one of the
4857 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4860 sGMTIME_max (time_size.U):
4861 This variable defines the maximum value of the time_t offset that
4862 the system function gmtime () accepts
4864 sGMTIME_min (time_size.U):
4865 This variable defines the minimum value of the time_t offset that
4866 the system function gmtime () accepts
4869 This variable contains the full pathname of the shell used
4870 on this system to execute Bourne shell scripts. Usually, this will be
4871 /bin/sh, though it's possible that some systems will have /bin/ksh,
4872 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4874 This unit comes before Options.U, so you can't set sh with a '-D'
4875 option, though you can override this (and startsh)
4876 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4879 This variable is defined but not used by Configure.
4880 The value is the empty string and is not useful.
4882 sharpbang (spitshell.U):
4883 This variable contains the string #! if this system supports that
4886 shmattype (d_shmat.U):
4887 This symbol contains the type of pointer returned by shmat().
4888 It can be 'void *' or 'char *'.
4890 shortsize (intsize.U):
4891 This variable contains the value of the SHORTSIZE symbol which
4892 indicates to the C program how many bytes there are in a short.
4894 shrpenv (libperl.U):
4895 If the user builds a shared libperl.so, then we need to tell the
4896 'perl' executable where it will be able to find the installed libperl.so.
4897 One way to do this on some systems is to set the environment variable
4898 LD_RUN_PATH to the directory that will be the final location of the
4899 shared libperl.so. The makefile can use this with something like
4900 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4902 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4905 See the main perl Makefile.SH for actual working usage.
4906 Alternatively, we might be able to use a command line option such
4907 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4908 $archlibexp/CORE (Linux).
4910 shsharp (spitshell.U):
4911 This variable tells further Configure units whether your sh can
4914 sig_count (sig_name.U):
4915 This variable holds a number larger than the largest valid
4916 signal number. This is usually the same as the NSIG macro.
4918 sig_name (sig_name.U):
4919 This variable holds the signal names, space separated. The leading
4920 SIG in signal name is removed. A ZERO is prepended to the list.
4921 This is currently not used, sig_name_init is used instead.
4923 sig_name_init (sig_name.U):
4924 This variable holds the signal names, enclosed in double quotes and
4925 separated by commas, suitable for use in the SIG_NAME definition
4926 below. A "ZERO" is prepended to the list, and the list is
4927 terminated with a plain 0. The leading SIG in signal names
4928 is removed. See sig_num.
4930 sig_num (sig_name.U):
4931 This variable holds the signal numbers, space separated. A ZERO is
4932 prepended to the list (corresponding to the fake SIGZERO).
4933 Those numbers correspond to the value of the signal listed
4934 in the same place within the sig_name list.
4935 This is currently not used, sig_num_init is used instead.
4937 sig_num_init (sig_name.U):
4938 This variable holds the signal numbers, enclosed in double quotes and
4939 separated by commas, suitable for use in the SIG_NUM definition
4940 below. A "ZERO" is prepended to the list, and the list is
4941 terminated with a plain 0.
4943 sig_size (sig_name.U):
4944 This variable contains the number of elements of the sig_name
4947 signal_t (d_voidsig.U):
4948 This variable holds the type of the signal handler (void or int).
4950 sitearch (sitearch.U):
4951 This variable contains the eventual value of the SITEARCH symbol,
4952 which is the name of the private library for this package. It may
4953 have a ~ on the front. It is up to the makefile to eventually create
4954 this directory while performing installation (with ~ substitution).
4955 The standard distribution will put nothing in this directory.
4956 After perl has been installed, users may install their own local
4957 architecture-dependent modules in this directory with
4958 MakeMaker Makefile.PL
4959 or equivalent. See INSTALL for details.
4961 sitearchexp (sitearch.U):
4962 This variable is the ~name expanded version of sitearch, so that you
4963 may use it directly in Makefiles or shell scripts.
4965 sitebin (sitebin.U):
4966 This variable holds the name of the directory in which the user wants
4967 to put add-on publicly executable files for the package in question. It
4968 is most often a local directory such as /usr/local/bin. Programs using
4969 this variable must be prepared to deal with ~name substitution.
4970 The standard distribution will put nothing in this directory.
4971 After perl has been installed, users may install their own local
4972 executables in this directory with
4973 MakeMaker Makefile.PL
4974 or equivalent. See INSTALL for details.
4976 sitebinexp (sitebin.U):
4977 This is the same as the sitebin variable, but is filename expanded at
4978 configuration time, for use in your makefiles.
4980 sitehtml1dir (sitehtml1dir.U):
4981 This variable contains the name of the directory in which site-specific
4982 html 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 html pages in this directory with
4988 MakeMaker Makefile.PL
4989 or equivalent. See INSTALL for details.
4991 sitehtml1direxp (sitehtml1dir.U):
4992 This variable is the same as the sitehtml1dir variable, but is filename
4993 expanded at configuration time, for convenient use in makefiles.
4995 sitehtml3dir (sitehtml3dir.U):
4996 This variable contains the name of the directory in which site-specific
4997 library html 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 library html pages in this directory with
5003 MakeMaker Makefile.PL
5004 or equivalent. See INSTALL for details.
5006 sitehtml3direxp (sitehtml3dir.U):
5007 This variable is the same as the sitehtml3dir variable, but is filename
5008 expanded at configuration time, for convenient use in makefiles.
5010 sitelib (sitelib.U):
5011 This variable contains the eventual value of the SITELIB symbol,
5012 which is the name of the private library for this package. It may
5013 have a ~ on the front. It is up to the makefile to eventually create
5014 this directory while performing installation (with ~ substitution).
5015 The standard distribution will put nothing in this directory.
5016 After perl has been installed, users may install their own local
5017 architecture-independent modules in this directory with
5018 MakeMaker Makefile.PL
5019 or equivalent. See INSTALL for details.
5021 sitelib_stem (sitelib.U):
5022 This variable is $sitelibexp with any trailing version-specific component
5023 removed. The elements in inc_version_list (inc_version_list.U) can
5024 be tacked onto this variable to generate a list of directories to search.
5026 sitelibexp (sitelib.U):
5027 This variable is the ~name expanded version of sitelib, so that you
5028 may use it directly in Makefiles or shell scripts.
5030 siteman1dir (siteman1dir.U):
5031 This variable contains the name of the directory in which site-specific
5032 manual source pages are to be put. It is the responsibility of the
5033 Makefile.SH to get the value of this into the proper command.
5034 You must be prepared to do the ~name expansion yourself.
5035 The standard distribution will put nothing in this directory.
5036 After perl has been installed, users may install their own local
5037 man1 pages in this directory with
5038 MakeMaker Makefile.PL
5039 or equivalent. See INSTALL for details.
5041 siteman1direxp (siteman1dir.U):
5042 This variable is the same as the siteman1dir variable, but is filename
5043 expanded at configuration time, for convenient use in makefiles.
5045 siteman3dir (siteman3dir.U):
5046 This variable contains the name of the directory in which site-specific
5047 library man source pages are to be put. It is the responsibility of the
5048 Makefile.SH to get the value of this into the proper command.
5049 You must be prepared to do the ~name expansion yourself.
5050 The standard distribution will put nothing in this directory.
5051 After perl has been installed, users may install their own local
5052 man3 pages in this directory with
5053 MakeMaker Makefile.PL
5054 or equivalent. See INSTALL for details.
5056 siteman3direxp (siteman3dir.U):
5057 This variable is the same as the siteman3dir variable, but is filename
5058 expanded at configuration time, for convenient use in makefiles.
5060 siteprefix (siteprefix.U):
5061 This variable holds the full absolute path of the directory below
5062 which the user will install add-on packages.
5063 See INSTALL for usage and examples.
5065 siteprefixexp (siteprefix.U):
5066 This variable holds the full absolute path of the directory below
5067 which the user will install add-on packages. Derived from siteprefix.
5069 sitescript (sitescript.U):
5070 This variable holds the name of the directory in which the user wants
5071 to put add-on publicly executable files for the package in question. It
5072 is most often a local directory such as /usr/local/bin. Programs using
5073 this variable must be prepared to deal with ~name substitution.
5074 The standard distribution will put nothing in this directory.
5075 After perl has been installed, users may install their own local
5076 scripts in this directory with
5077 MakeMaker Makefile.PL
5078 or equivalent. See INSTALL for details.
5080 sitescriptexp (sitescript.U):
5081 This is the same as the sitescript variable, but is filename expanded at
5082 configuration time, for use in your makefiles.
5084 sizesize (sizesize.U):
5085 This variable contains the size of a sizetype in bytes.
5087 sizetype (sizetype.U):
5088 This variable defines sizetype to be something like size_t,
5089 unsigned long, or whatever type is used to declare length
5090 parameters for string functions.
5093 This variable is defined but not used by Configure.
5094 The value is the empty string and is not useful.
5096 sLOCALTIME_max (time_size.U):
5097 This variable defines the maximum value of the time_t offset that
5098 the system function localtime () accepts
5100 sLOCALTIME_min (time_size.U):
5101 This variable defines the minimum value of the time_t offset that
5102 the system function localtime () accepts
5105 This variable is defined but not used by Configure.
5106 The value is the empty string and is not useful.
5109 This variable holds the extension used to identify shared libraries
5110 (also known as shared objects) on the system. Usually set to 'so'.
5112 sockethdr (d_socket.U):
5113 This variable has any cpp '-I' flags needed for socket support.
5115 socketlib (d_socket.U):
5116 This variable has the names of any libraries needed for socket support.
5118 socksizetype (socksizetype.U):
5119 This variable holds the type used for the size argument
5120 for various socket calls like accept. Usual values include
5121 socklen_t, size_t, and int.
5124 This variable is used internally by Configure to determine the
5125 full pathname (if any) of the sort program. After Configure runs,
5126 the value is reset to a plain "sort" and is not useful.
5128 spackage (package.U):
5129 This variable contains the name of the package being constructed,
5130 with the first letter uppercased, i.e. suitable for starting
5133 spitshell (spitshell.U):
5134 This variable contains the command necessary to spit out a runnable
5135 shell on this system. It is either cat or a grep '-v' for # comments.
5137 sPRId64 (quadfio.U):
5138 This variable, if defined, contains the string used by stdio to
5139 format 64-bit decimal numbers (format 'd') for output.
5141 sPRIeldbl (longdblfio.U):
5142 This variable, if defined, contains the string used by stdio to
5143 format long doubles (format 'e') for output.
5145 sPRIEUldbl (longdblfio.U):
5146 This variable, if defined, contains the string used by stdio to
5147 format long doubles (format 'E') for output.
5148 The 'U' in the name is to separate this from sPRIeldbl so that even
5149 case-blind systems can see the difference.
5151 sPRIfldbl (longdblfio.U):
5152 This variable, if defined, contains the string used by stdio to
5153 format long doubles (format 'f') for output.
5155 sPRIFUldbl (longdblfio.U):
5156 This variable, if defined, contains the string used by stdio to
5157 format long doubles (format 'F') for output.
5158 The 'U' in the name is to separate this from sPRIfldbl so that even
5159 case-blind systems can see the difference.
5161 sPRIgldbl (longdblfio.U):
5162 This variable, if defined, contains the string used by stdio to
5163 format long doubles (format 'g') for output.
5165 sPRIGUldbl (longdblfio.U):
5166 This variable, if defined, contains the string used by stdio to
5167 format long doubles (format 'G') for output.
5168 The 'U' in the name is to separate this from sPRIgldbl so that even
5169 case-blind systems can see the difference.
5171 sPRIi64 (quadfio.U):
5172 This variable, if defined, contains the string used by stdio to
5173 format 64-bit decimal numbers (format 'i') for output.
5175 sPRIo64 (quadfio.U):
5176 This variable, if defined, contains the string used by stdio to
5177 format 64-bit octal numbers (format 'o') for output.
5179 sPRIu64 (quadfio.U):
5180 This variable, if defined, contains the string used by stdio to
5181 format 64-bit unsigned decimal numbers (format 'u') for output.
5183 sPRIx64 (quadfio.U):
5184 This variable, if defined, contains the string used by stdio to
5185 format 64-bit hexadecimal numbers (format 'x') for output.
5187 sPRIXU64 (quadfio.U):
5188 This variable, if defined, contains the string used by stdio to
5189 format 64-bit hExADECimAl numbers (format 'X') for output.
5190 The 'U' in the name is to separate this from sPRIx64 so that even
5191 case-blind systems can see the difference.
5193 srand48_r_proto (d_srand48_r.U):
5194 This variable encodes the prototype of srand48_r.
5195 It is zero if d_srand48_r is undef, and one of the
5196 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
5199 srandom_r_proto (d_srandom_r.U):
5200 This variable encodes the prototype of srandom_r.
5201 It is zero if d_srandom_r is undef, and one of the
5202 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
5206 This variable holds the (possibly relative) path of the package source.
5207 It is up to the Makefile to use this variable and set VPATH accordingly
5208 to find the sources remotely. Use $pkgsrc to have an absolute path.
5210 sSCNfldbl (longdblfio.U):
5211 This variable, if defined, contains the string used by stdio to
5212 format long doubles (format 'f') for input.
5214 ssizetype (ssizetype.U):
5215 This variable defines ssizetype to be something like ssize_t,
5216 long or int. It is used by functions that return a count
5217 of bytes or an error condition. It must be a signed type.
5218 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
5220 st_ino_sign (st_ino_def.U):
5221 This variable contains the signedness of struct stat's st_ino.
5222 1 for unsigned, -1 for signed.
5224 st_ino_size (st_ino_def.U):
5225 This variable contains the size of struct stat's st_ino in bytes.
5227 startperl (startperl.U):
5228 This variable contains the string to put on the front of a perl
5229 script to make sure (hopefully) that it runs with perl and not some
5230 shell. Of course, that leading line must be followed by the classical
5232 eval 'exec perl -S $0 ${1+"$@"}'
5233 if $running_under_some_shell;
5234 to guarantee perl startup should the shell execute the script. Note
5235 that this magic incantation is not understood by csh.
5237 startsh (startsh.U):
5238 This variable contains the string to put on the front of a shell
5239 script to make sure (hopefully) that it runs with sh and not some
5242 static_ext (Extensions.U):
5243 This variable holds a list of XS extension files we want to
5244 link statically into the package. It is used by Makefile.
5246 stdchar (stdchar.U):
5247 This variable conditionally defines STDCHAR to be the type of char
5248 used in stdio.h. It has the values "unsigned char" or "char".
5250 stdio_base (d_stdstdio.U):
5251 This variable defines how, given a FILE pointer, fp, to access the
5252 _base field (or equivalent) of stdio.h's FILE structure. This will
5253 be used to define the macro FILE_base(fp).
5255 stdio_bufsiz (d_stdstdio.U):
5256 This variable defines how, given a FILE pointer, fp, to determine
5257 the number of bytes store in the I/O buffer pointer to by the
5258 _base field (or equivalent) of stdio.h's FILE structure. This will
5259 be used to define the macro FILE_bufsiz(fp).
5261 stdio_cnt (d_stdstdio.U):
5262 This variable defines how, given a FILE pointer, fp, to access the
5263 _cnt field (or equivalent) of stdio.h's FILE structure. This will
5264 be used to define the macro FILE_cnt(fp).
5266 stdio_filbuf (d_stdstdio.U):
5267 This variable defines how, given a FILE pointer, fp, to tell
5268 stdio to refill its internal buffers (?). This will
5269 be used to define the macro FILE_filbuf(fp).
5271 stdio_ptr (d_stdstdio.U):
5272 This variable defines how, given a FILE pointer, fp, to access the
5273 _ptr field (or equivalent) of stdio.h's FILE structure. This will
5274 be used to define the macro FILE_ptr(fp).
5276 stdio_stream_array (stdio_streams.U):
5277 This variable tells the name of the array holding the stdio streams.
5278 Usual values include _iob, __iob, and __sF.
5280 strerror_r_proto (d_strerror_r.U):
5281 This variable encodes the prototype of strerror_r.
5282 It is zero if d_strerror_r is undef, and one of the
5283 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
5287 This variable is defined but not used by Configure.
5288 The value is the empty string and is not useful.
5290 subversion (patchlevel.U):
5291 The subversion level of this package.
5292 The value of subversion comes from the patchlevel.h file.
5293 In a version number such as 5.6.1, this is the "1".
5294 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
5295 This is unique to perl.
5298 This variable holds the place where the manual is located on this
5299 system. It is not the place where the user wants to put his manual
5300 pages. Rather it is the place where Configure may look to find manual
5301 for unix commands (section 1 of the manual usually). See mansrc.
5303 sysroot (Sysroot.U):
5304 This variable is empty unless supplied by the Configure user.
5305 It can contain a path to an alternative root directory, under which
5306 headers and libraries for the compilation target can be found. This
5307 is generally used when cross-compiling using a gcc-like compiler.
5310 This variable is defined but not used by Configure.
5311 The value is the empty string and is not useful.
5314 This variable is defined but not used by Configure.
5315 The value is the empty string and is not useful.
5317 targetarch (Cross.U):
5318 If cross-compiling, this variable contains the target architecture.
5319 If not, this will be empty.
5321 targetdir (Cross.U):
5322 This variable contains a path that will be created on the target
5323 host using targetmkdir, and then used to copy the cross-compiled
5324 executables to. Defaults to '/tmp' if not set.
5326 targetenv (Cross.U):
5327 If cross-compiling, this variable can be used to modify the
5328 environment on the target system.
5329 However, how and where it's used, and even if it's used at all, is
5330 entirely dependent on both the transport mechanism (targetrun) and
5331 what the target system is. Unless the relevant documentation says
5332 otherwise, it is genereally not useful.
5334 targethost (Cross.U):
5335 This variable contains the name of a separate host machine that
5336 can be used to run compiled test programs and perl tests on.
5337 Set to empty string if not in use.
5339 targetmkdir (Cross.U):
5340 This variable contains the command used by Configure to create a
5341 new directory on the target host.
5343 targetport (Cross.U):
5344 This variable contains the number of a network port to be used to
5345 connect to the host in targethost, if unset defaults to 22 for ssh.
5348 If cross-compiling, this variable contains the location of sh on the
5350 If not, this will be the same as $sh.
5353 This variable is defined but not used by Configure.
5354 The value is the empty string and is not useful.
5357 This variable is defined but not used by Configure.
5358 The value is the empty string and is not useful.
5361 This variable is used internally by Configure to determine the
5362 full pathname (if any) of the test program. After Configure runs,
5363 the value is reset to a plain "test" and is not useful.
5365 timeincl (i_time.U):
5366 This variable holds the full path of the included time header(s).
5368 timetype (d_time.U):
5369 This variable holds the type returned by time(). It can be long,
5370 or time_t on BSD sites (in which case <sys/types.h> should be
5371 included). Anyway, the type Time_t should be used.
5373 tmpnam_r_proto (d_tmpnam_r.U):
5374 This variable encodes the prototype of tmpnam_r.
5375 It is zero if d_tmpnam_r is undef, and one of the
5376 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
5380 This variable contains the command used by Configure
5381 to copy to from the target host. Useful and available
5382 only during Perl build.
5383 The string ':' if not cross-compiling.
5386 This variable is used internally by Configure to determine the
5387 full pathname (if any) of the touch program. After Configure runs,
5388 the value is reset to a plain "touch" and is not useful.
5391 This variable is used internally by Configure to determine the
5392 full pathname (if any) of the tr program. After Configure runs,
5393 the value is reset to a plain "tr" and is not useful.
5396 This variable contains the value to be passed to the tr(1)
5397 command to transliterate a newline. Typical values are
5398 '\012' and '\n'. This is needed for EBCDIC systems where
5399 newline is not necessarily '\012'.
5402 This variable is defined but not used by Configure.
5403 The value is the empty string and is not useful.
5405 ttyname_r_proto (d_ttyname_r.U):
5406 This variable encodes the prototype of ttyname_r.
5407 It is zero if d_ttyname_r is undef, and one of the
5408 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
5412 This variable is the size of an U16 in bytes.
5415 This variable contains the C type used for Perl's U16.
5418 This variable is the size of an U32 in bytes.
5421 This variable contains the C type used for Perl's U32.
5424 This variable is the size of an U64 in bytes.
5427 This variable contains the C type used for Perl's U64.
5430 This variable is the size of an U8 in bytes.
5433 This variable contains the C type used for Perl's U8.
5436 This variable contains the format string used for printing a Uid_t.
5438 uidsign (uidsign.U):
5439 This variable contains the signedness of a uidtype.
5440 1 for unsigned, -1 for signed.
5442 uidsize (uidsize.U):
5443 This variable contains the size of a uidtype in bytes.
5445 uidtype (uidtype.U):
5446 This variable defines Uid_t to be something like uid_t, int,
5447 ushort, or whatever type is used to declare user ids in the kernel.
5450 This variable is used internally by Configure to determine the
5451 full pathname (if any) of the uname program. After Configure runs,
5452 the value is reset to a plain "uname" and is not useful.
5455 This variable is used internally by Configure to determine the
5456 full pathname (if any) of the uniq program. After Configure runs,
5457 the value is reset to a plain "uniq" and is not useful.
5459 uquadtype (quadtype.U):
5460 This variable defines Uquad_t to be something like unsigned long,
5461 unsigned int, unsigned long long, uint64_t, or whatever type is
5462 used for 64-bit integers.
5464 use5005threads (usethreads.U):
5465 This variable conditionally defines the USE_5005THREADS symbol,
5466 and indicates that Perl should be built to use the 5.005-based
5467 threading implementation. Only valid up to 5.8.x.
5469 use64bitall (use64bits.U):
5470 This variable conditionally defines the USE_64_BIT_ALL symbol,
5471 and indicates that 64-bit integer types should be used
5472 when available. The maximal possible
5473 64-bitness is employed: LP64 or ILP64, meaning that you will
5474 be able to use more than 2 gigabytes of memory. This mode is
5475 even more binary incompatible than USE_64_BIT_INT. You may not
5476 be able to run the resulting executable in a 32-bit CPU at all or
5477 you may need at least to reboot your OS to 64-bit mode.
5479 use64bitint (use64bits.U):
5480 This variable conditionally defines the USE_64_BIT_INT symbol,
5481 and indicates that 64-bit integer types should be used
5482 when available. The minimal possible 64-bitness
5483 is employed, just enough to get 64-bit integers into Perl.
5484 This may mean using for example "long longs", while your memory
5485 may still be limited to 2 gigabytes.
5487 usecbacktrace (usebacktrace.U):
5488 This variable indicates whether we are compiling with backtrace
5491 usecrosscompile (Cross.U):
5492 This variable conditionally defines the USE_CROSS_COMPILE symbol,
5493 and indicates that Perl has been cross-compiled.
5496 This variable indicates that Perl was configured with development
5497 features enabled. This should not be done for production builds.
5500 This variable indicates if the system supports dynamic
5501 loading of some sort. See also dlsrc and dlobj.
5503 usedtrace (usedtrace.U):
5504 This variable indicates whether we are compiling with dtrace
5505 support. See also dtrace.
5507 usefaststdio (usefaststdio.U):
5508 This variable conditionally defines the USE_FAST_STDIO symbol,
5509 and indicates that Perl should be built to use 'fast stdio'.
5510 Defaults to define in Perls 5.8 and earlier, to undef later.
5512 useithreads (usethreads.U):
5513 This variable conditionally defines the USE_ITHREADS symbol,
5514 and indicates that Perl should be built to use the interpreter-based
5515 threading implementation.
5517 usekernprocpathname (usekernprocpathname.U):
5518 This variable, indicates that we can use sysctl with
5519 KERN_PROC_PATHNAME to get a full path for the executable, and hence
5520 convert $^X to an absolute path.
5522 uselargefiles (uselfs.U):
5523 This variable conditionally defines the USE_LARGE_FILES symbol,
5524 and indicates that large file interfaces should be used when
5527 uselongdouble (uselongdbl.U):
5528 This variable conditionally defines the USE_LONG_DOUBLE symbol,
5529 and indicates that long doubles should be used when available.
5531 usemallocwrap (mallocsrc.U):
5532 This variable contains y if we are wrapping malloc to prevent
5533 integer overflow during size calculations.
5535 usemorebits (usemorebits.U):
5536 This variable conditionally defines the USE_MORE_BITS symbol,
5537 and indicates that explicit 64-bit interfaces and long doubles
5538 should be used when available.
5540 usemultiplicity (usemultiplicity.U):
5541 This variable conditionally defines the MULTIPLICITY symbol,
5542 and indicates that Perl should be built to use multiplicity.
5544 usemymalloc (mallocsrc.U):
5545 This variable contains y if the malloc that comes with this package
5546 is desired over the system's version of malloc. People often include
5547 special versions of malloc for efficiency, but such versions are often
5548 less portable. See also mallocsrc and mallocobj.
5549 If this is 'y', then -lmalloc is removed from $libs.
5552 This variable contains 'true' or 'false' depending whether the
5553 nm extraction is wanted or not.
5555 usensgetexecutablepath (usensgetexecutablepath.U):
5556 This symbol, if defined, indicates that we can use _NSGetExecutablePath
5557 and realpath to get a full path for the executable, and hence convert
5558 $^X to an absolute path.
5560 useopcode (Extensions.U):
5561 This variable holds either 'true' or 'false' to indicate
5562 whether the Opcode extension should be used. The sole
5563 use for this currently is to allow an easy mechanism
5564 for users to skip the Opcode extension from the Configure
5567 useperlio (useperlio.U):
5568 This variable conditionally defines the USE_PERLIO symbol,
5569 and indicates that the PerlIO abstraction should be
5572 useposix (Extensions.U):
5573 This variable holds either 'true' or 'false' to indicate
5574 whether the POSIX extension should be used. The sole
5575 use for this currently is to allow an easy mechanism
5576 for hints files to indicate that POSIX will not compile
5577 on a particular system.
5579 usequadmath (usequadmath.U):
5580 This variable conditionally defines the USE_QUADMATH symbol,
5581 and indicates that the quadmath library __float128 long doubles
5582 should be used when available.
5584 usereentrant (usethreads.U):
5585 This variable conditionally defines the USE_REENTRANT_API symbol,
5586 which indicates that the thread code may try to use the various
5587 _r versions of library functions. This is only potentially
5588 meaningful if usethreads is set and is very experimental, it is
5589 not even prompted for.
5591 userelocatableinc (bin.U):
5592 This variable is set to true to indicate that perl should relocate
5593 @INC entries at runtime based on the path to the perl binary.
5594 Any @INC paths starting ".../" are relocated relative to the directory
5595 containing the perl binary, and a logical cleanup of the path is then
5596 made around the join point (removing "dir/../" pairs)
5598 useshrplib (libperl.U):
5599 This variable is set to 'true' if the user wishes
5600 to build a shared libperl, and 'false' otherwise.
5602 usesitecustomize (d_sitecustomize.U):
5603 This variable is set to true when the user requires a mechanism that
5604 allows the sysadmin to add entries to @INC at runtime. This variable
5605 being set, makes perl run '$sitelib/sitecustomize.pl' at startup.
5607 usesocks (usesocks.U):
5608 This variable conditionally defines the USE_SOCKS symbol,
5609 and indicates that Perl should be built to use SOCKS.
5611 usethreads (usethreads.U):
5612 This variable conditionally defines the USE_THREADS symbol,
5613 and indicates that Perl should be built to use threads.
5615 usevendorprefix (vendorprefix.U):
5616 This variable tells whether the vendorprefix
5617 and consequently other vendor* paths are in use.
5619 useversionedarchname (archname.U):
5620 This variable indicates whether to include the $api_versionstring
5621 as a component of the $archname.
5623 usevfork (d_vfork.U):
5624 This variable is set to true when the user accepts to use vfork.
5625 It is set to false when no vfork is available or when the user
5626 explicitly requests not to use vfork.
5629 This variable holds the path of the include files, which is
5630 usually /usr/include. It is mainly used by other Configure units.
5633 This variable is defined but not used by Configure.
5634 The value is the empty string and is not useful.
5636 uvoformat (perlxvf.U):
5637 This variable contains the format string used for printing
5638 a Perl UV as an unsigned octal integer.
5641 This variable is the size of a UV in bytes.
5644 This variable contains the C type used for Perl's UV.
5646 uvuformat (perlxvf.U):
5647 This variable contains the format string used for printing
5648 a Perl UV as an unsigned decimal integer.
5650 uvxformat (perlxvf.U):
5651 This variable contains the format string used for printing
5652 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
5654 uvXUformat (perlxvf.U):
5655 This variable contains the format string used for printing
5656 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
5658 vendorarch (vendorarch.U):
5659 This variable contains the value of the PERL_VENDORARCH symbol.
5660 It may have a ~ on the front.
5661 The standard distribution will put nothing in this directory.
5662 Vendors who distribute perl may wish to place their own
5663 architecture-dependent modules and extensions in this directory with
5664 MakeMaker Makefile.PL INSTALLDIRS=vendor
5665 or equivalent. See INSTALL for details.
5667 vendorarchexp (vendorarch.U):
5668 This variable is the ~name expanded version of vendorarch, so that you
5669 may use it directly in Makefiles or shell scripts.
5671 vendorbin (vendorbin.U):
5672 This variable contains the eventual value of the VENDORBIN symbol.
5673 It may have a ~ on the front.
5674 The standard distribution will put nothing in this directory.
5675 Vendors who distribute perl may wish to place additional
5676 binaries in this directory with
5677 MakeMaker Makefile.PL INSTALLDIRS=vendor
5678 or equivalent. See INSTALL for details.
5680 vendorbinexp (vendorbin.U):
5681 This variable is the ~name expanded version of vendorbin, so that you
5682 may use it directly in Makefiles or shell scripts.
5684 vendorhtml1dir (vendorhtml1dir.U):
5685 This variable contains the name of the directory for html
5686 pages. It may have a ~ on the front.
5687 The standard distribution will put nothing in this directory.
5688 Vendors who distribute perl may wish to place their own
5689 html pages in this directory with
5690 MakeMaker Makefile.PL INSTALLDIRS=vendor
5691 or equivalent. See INSTALL for details.
5693 vendorhtml1direxp (vendorhtml1dir.U):
5694 This variable is the ~name expanded version of vendorhtml1dir, so that you
5695 may use it directly in Makefiles or shell scripts.
5697 vendorhtml3dir (vendorhtml3dir.U):
5698 This variable contains the name of the directory for html
5699 library pages. It may have a ~ on the front.
5700 The standard distribution will put nothing in this directory.
5701 Vendors who distribute perl may wish to place their own
5702 html pages for modules and extensions in this directory with
5703 MakeMaker Makefile.PL INSTALLDIRS=vendor
5704 or equivalent. See INSTALL for details.
5706 vendorhtml3direxp (vendorhtml3dir.U):
5707 This variable is the ~name expanded version of vendorhtml3dir, so that you
5708 may use it directly in Makefiles or shell scripts.
5710 vendorlib (vendorlib.U):
5711 This variable contains the eventual value of the VENDORLIB symbol,
5712 which is the name of the private library for this package.
5713 The standard distribution will put nothing in this directory.
5714 Vendors who distribute perl may wish to place their own
5715 modules in this directory with
5716 MakeMaker Makefile.PL INSTALLDIRS=vendor
5717 or equivalent. See INSTALL for details.
5719 vendorlib_stem (vendorlib.U):
5720 This variable is $vendorlibexp with any trailing version-specific component
5721 removed. The elements in inc_version_list (inc_version_list.U) can
5722 be tacked onto this variable to generate a list of directories to search.
5724 vendorlibexp (vendorlib.U):
5725 This variable is the ~name expanded version of vendorlib, so that you
5726 may use it directly in Makefiles or shell scripts.
5728 vendorman1dir (vendorman1dir.U):
5729 This variable contains the name of the directory for man1
5730 pages. It may have a ~ on the front.
5731 The standard distribution will put nothing in this directory.
5732 Vendors who distribute perl may wish to place their own
5733 man1 pages in this directory with
5734 MakeMaker Makefile.PL INSTALLDIRS=vendor
5735 or equivalent. See INSTALL for details.
5737 vendorman1direxp (vendorman1dir.U):
5738 This variable is the ~name expanded version of vendorman1dir, so that you
5739 may use it directly in Makefiles or shell scripts.
5741 vendorman3dir (vendorman3dir.U):
5742 This variable contains the name of the directory for man3
5743 pages. It may have a ~ on the front.
5744 The standard distribution will put nothing in this directory.
5745 Vendors who distribute perl may wish to place their own
5746 man3 pages in this directory with
5747 MakeMaker Makefile.PL INSTALLDIRS=vendor
5748 or equivalent. See INSTALL for details.
5750 vendorman3direxp (vendorman3dir.U):
5751 This variable is the ~name expanded version of vendorman3dir, so that you
5752 may use it directly in Makefiles or shell scripts.
5754 vendorprefix (vendorprefix.U):
5755 This variable holds the full absolute path of the directory below
5756 which the vendor will install add-on packages.
5757 See INSTALL for usage and examples.
5759 vendorprefixexp (vendorprefix.U):
5760 This variable holds the full absolute path of the directory below
5761 which the vendor will install add-on packages. Derived from vendorprefix.
5763 vendorscript (vendorscript.U):
5764 This variable contains the eventual value of the VENDORSCRIPT symbol.
5765 It may have a ~ on the front.
5766 The standard distribution will put nothing in this directory.
5767 Vendors who distribute perl may wish to place additional
5768 executable scripts in this directory with
5769 MakeMaker Makefile.PL INSTALLDIRS=vendor
5770 or equivalent. See INSTALL for details.
5772 vendorscriptexp (vendorscript.U):
5773 This variable is the ~name expanded version of vendorscript, so that you
5774 may use it directly in Makefiles or shell scripts.
5776 version (patchlevel.U):
5777 The full version number of this package, such as 5.6.1 (or 5_6_1).
5778 This combines revision, patchlevel, and subversion to get the
5779 full version number, including any possible subversions.
5780 This is suitable for use as a directory name, and hence is
5781 filesystem dependent.
5783 version_patchlevel_string (patchlevel.U):
5784 This is a string combining version, subversion and
5785 perl_patchlevel (if perl_patchlevel is non-zero).
5786 It is typically something like
5787 'version 7 subversion 1' or
5788 'version 7 subversion 1 patchlevel 11224'
5789 It is computed here to avoid duplication of code in myconfig.SH
5792 versiononly (versiononly.U):
5793 If set, this symbol indicates that only the version-specific
5794 components of a perl installation should be installed.
5795 This may be useful for making a test installation of a new
5796 version without disturbing the existing installation.
5797 Setting versiononly is equivalent to setting installperl's -v option.
5798 In particular, the non-versioned scripts and programs such as
5799 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
5800 (see INSTALL for a more complete list). Nor are the man
5802 Usually, this is undef.
5805 This variable is defined but not used by Configure.
5806 The value is the empty string and is not useful.
5809 This variable holds extra path (space-separated) used to find
5810 libraries on this platform, for example CPU-specific libraries
5811 (on multi-CPU platforms) may be listed here.
5814 This variable holds the name of the compiler compiler we
5815 want to use in the Makefile. It can be yacc, byacc, or bison -y.
5818 This variable contains any additional yacc flags desired by the
5819 user. It is up to the Makefile to use this.
5822 This variable is defined but not used by Configure.
5823 The value is the empty string and is not useful.
5826 This variable is used internally by Configure to determine the
5827 full pathname (if any) of the zip program. After Configure runs,
5828 the value is reset to a plain "zip" and is not useful.